Merge branch 'for-chris' of git://repo.or.cz/linux-btrfs-devel into integration

[karo-tx-linux.git] / drivers / net / ethernet / broadcom / tg3.c

/*
 * tg3.c: Broadcom Tigon3 ethernet driver.
 *
 * Copyright (C) 2001, 2002, 2003, 2004 David S. Miller (davem@redhat.com)
 * Copyright (C) 2001, 2002, 2003 Jeff Garzik (jgarzik@pobox.com)
 * Copyright (C) 2004 Sun Microsystems Inc.
 * Copyright (C) 2005-2011 Broadcom Corporation.
 *
 * Firmware is:
 *      Derived from proprietary unpublished source code,
 *      Copyright (C) 2000-2003 Broadcom Corporation.
 *
 *      Permission is hereby granted for the distribution of this firmware
 *      data in hexadecimal or equivalent format, provided this copyright
 *      notice is accompanying it.
 */


#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/stringify.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/compiler.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/in.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/ethtool.h>
#include <linux/mdio.h>
#include <linux/mii.h>
#include <linux/phy.h>
#include <linux/brcmphy.h>
#include <linux/if_vlan.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/workqueue.h>
#include <linux/prefetch.h>
#include <linux/dma-mapping.h>
#include <linux/firmware.h>

#include <net/checksum.h>
#include <net/ip.h>

#include <asm/system.h>
#include <linux/io.h>
#include <asm/byteorder.h>
#include <linux/uaccess.h>

#ifdef CONFIG_SPARC
#include <asm/idprom.h>
#include <asm/prom.h>
#endif

#define BAR_0   0
#define BAR_2   2

#include "tg3.h"

/* Functions & macros to verify TG3_FLAGS types */

static inline int _tg3_flag(enum TG3_FLAGS flag, unsigned long *bits)
{
        return test_bit(flag, bits);
}

static inline void _tg3_flag_set(enum TG3_FLAGS flag, unsigned long *bits)
{
        set_bit(flag, bits);
}

static inline void _tg3_flag_clear(enum TG3_FLAGS flag, unsigned long *bits)
{
        clear_bit(flag, bits);
}

#define tg3_flag(tp, flag)                              \
        _tg3_flag(TG3_FLAG_##flag, (tp)->tg3_flags)
#define tg3_flag_set(tp, flag)                          \
        _tg3_flag_set(TG3_FLAG_##flag, (tp)->tg3_flags)
#define tg3_flag_clear(tp, flag)                        \
        _tg3_flag_clear(TG3_FLAG_##flag, (tp)->tg3_flags)

#define DRV_MODULE_NAME         "tg3"
#define TG3_MAJ_NUM                     3
#define TG3_MIN_NUM                     121
#define DRV_MODULE_VERSION      \
        __stringify(TG3_MAJ_NUM) "." __stringify(TG3_MIN_NUM)
#define DRV_MODULE_RELDATE      "November 2, 2011"

#define RESET_KIND_SHUTDOWN     0
#define RESET_KIND_INIT         1
#define RESET_KIND_SUSPEND      2

#define TG3_DEF_RX_MODE         0
#define TG3_DEF_TX_MODE         0
#define TG3_DEF_MSG_ENABLE        \
        (NETIF_MSG_DRV          | \
         NETIF_MSG_PROBE        | \
         NETIF_MSG_LINK         | \
         NETIF_MSG_TIMER        | \
         NETIF_MSG_IFDOWN       | \
         NETIF_MSG_IFUP         | \
         NETIF_MSG_RX_ERR       | \
         NETIF_MSG_TX_ERR)

#define TG3_GRC_LCLCTL_PWRSW_DELAY      100

/* length of time before we decide the hardware is borked,
 * and dev->tx_timeout() should be called to fix the problem
 */

#define TG3_TX_TIMEOUT                  (5 * HZ)

/* hardware minimum and maximum for a single frame's data payload */
#define TG3_MIN_MTU                     60
#define TG3_MAX_MTU(tp) \
        (tg3_flag(tp, JUMBO_CAPABLE) ? 9000 : 1500)

/* These numbers seem to be hard coded in the NIC firmware somehow.
 * You can't change the ring sizes, but you can change where you place
 * them in the NIC onboard memory.
 */
#define TG3_RX_STD_RING_SIZE(tp) \
        (tg3_flag(tp, LRG_PROD_RING_CAP) ? \
         TG3_RX_STD_MAX_SIZE_5717 : TG3_RX_STD_MAX_SIZE_5700)
#define TG3_DEF_RX_RING_PENDING         200
#define TG3_RX_JMB_RING_SIZE(tp) \
        (tg3_flag(tp, LRG_PROD_RING_CAP) ? \
         TG3_RX_JMB_MAX_SIZE_5717 : TG3_RX_JMB_MAX_SIZE_5700)
#define TG3_DEF_RX_JUMBO_RING_PENDING   100
#define TG3_RSS_INDIR_TBL_SIZE          128

/* Do not place this n-ring entries value into the tp struct itself,
 * we really want to expose these constants to GCC so that modulo et
 * al.  operations are done with shifts and masks instead of with
 * hw multiply/modulo instructions.  Another solution would be to
 * replace things like '% foo' with '& (foo - 1)'.
 */

#define TG3_TX_RING_SIZE                512
#define TG3_DEF_TX_RING_PENDING         (TG3_TX_RING_SIZE - 1)

#define TG3_RX_STD_RING_BYTES(tp) \
        (sizeof(struct tg3_rx_buffer_desc) * TG3_RX_STD_RING_SIZE(tp))
#define TG3_RX_JMB_RING_BYTES(tp) \
        (sizeof(struct tg3_ext_rx_buffer_desc) * TG3_RX_JMB_RING_SIZE(tp))
#define TG3_RX_RCB_RING_BYTES(tp) \
        (sizeof(struct tg3_rx_buffer_desc) * (tp->rx_ret_ring_mask + 1))
#define TG3_TX_RING_BYTES       (sizeof(struct tg3_tx_buffer_desc) * \
                                 TG3_TX_RING_SIZE)
#define NEXT_TX(N)              (((N) + 1) & (TG3_TX_RING_SIZE - 1))

#define TG3_DMA_BYTE_ENAB               64

#define TG3_RX_STD_DMA_SZ               1536
#define TG3_RX_JMB_DMA_SZ               9046

#define TG3_RX_DMA_TO_MAP_SZ(x)         ((x) + TG3_DMA_BYTE_ENAB)

#define TG3_RX_STD_MAP_SZ               TG3_RX_DMA_TO_MAP_SZ(TG3_RX_STD_DMA_SZ)
#define TG3_RX_JMB_MAP_SZ               TG3_RX_DMA_TO_MAP_SZ(TG3_RX_JMB_DMA_SZ)

#define TG3_RX_STD_BUFF_RING_SIZE(tp) \
        (sizeof(struct ring_info) * TG3_RX_STD_RING_SIZE(tp))

#define TG3_RX_JMB_BUFF_RING_SIZE(tp) \
        (sizeof(struct ring_info) * TG3_RX_JMB_RING_SIZE(tp))

/* Due to a hardware bug, the 5701 can only DMA to memory addresses
 * that are at least dword aligned when used in PCIX mode.  The driver
 * works around this bug by double copying the packet.  This workaround
 * is built into the normal double copy length check for efficiency.
 *
 * However, the double copy is only necessary on those architectures
 * where unaligned memory accesses are inefficient.  For those architectures
 * where unaligned memory accesses incur little penalty, we can reintegrate
 * the 5701 in the normal rx path.  Doing so saves a device structure
 * dereference by hardcoding the double copy threshold in place.
 */
#define TG3_RX_COPY_THRESHOLD           256
#if NET_IP_ALIGN == 0 || defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
        #define TG3_RX_COPY_THRESH(tp)  TG3_RX_COPY_THRESHOLD
#else
        #define TG3_RX_COPY_THRESH(tp)  ((tp)->rx_copy_thresh)
#endif

#if (NET_IP_ALIGN != 0)
#define TG3_RX_OFFSET(tp)       ((tp)->rx_offset)
#else
#define TG3_RX_OFFSET(tp)       0
#endif

/* minimum number of free TX descriptors required to wake up TX process */
#define TG3_TX_WAKEUP_THRESH(tnapi)             ((tnapi)->tx_pending / 4)
#define TG3_TX_BD_DMA_MAX               4096

#define TG3_RAW_IP_ALIGN 2

#define TG3_FW_UPDATE_TIMEOUT_SEC       5

#define FIRMWARE_TG3            "tigon/tg3.bin"
#define FIRMWARE_TG3TSO         "tigon/tg3_tso.bin"
#define FIRMWARE_TG3TSO5        "tigon/tg3_tso5.bin"

static char version[] __devinitdata =
        DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")";

MODULE_AUTHOR("David S. Miller (davem@redhat.com) and Jeff Garzik (jgarzik@pobox.com)");
MODULE_DESCRIPTION("Broadcom Tigon3 ethernet driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_MODULE_VERSION);
MODULE_FIRMWARE(FIRMWARE_TG3);
MODULE_FIRMWARE(FIRMWARE_TG3TSO);
MODULE_FIRMWARE(FIRMWARE_TG3TSO5);

static int tg3_debug = -1;      /* -1 == use TG3_DEF_MSG_ENABLE as value */
module_param(tg3_debug, int, 0);
MODULE_PARM_DESC(tg3_debug, "Tigon3 bitmapped debugging message enable value");

static DEFINE_PCI_DEVICE_TABLE(tg3_pci_tbl) = {
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5700)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5701)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5702)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5703)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5704)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5702FE)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5705)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5705_2)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5705M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5705M_2)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5702X)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5703X)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5704S)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5702A3)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5703A3)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5782)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5788)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5789)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5901)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5901_2)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5704S_2)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5705F)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5721)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5722)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5751)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5751M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5751F)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5752)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5752M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5753)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5753M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5753F)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5754)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5754M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5755)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5755M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5756)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5786)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5787)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5787M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5787F)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5714)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5714S)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5715)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5715S)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5780)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5780S)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5781)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5906)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5906M)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5784)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5764)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5723)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5761)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5761E)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_5761S)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_5761SE)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_5785_G)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_5785_F)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57780)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57760)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57790)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57788)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_5717)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_5718)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57781)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57785)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57761)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57765)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57791)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_57795)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_5719)},
        {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, TG3PCI_DEVICE_TIGON3_5720)},
        {PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_9DXX)},
        {PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_9MXX)},
        {PCI_DEVICE(PCI_VENDOR_ID_ALTIMA, PCI_DEVICE_ID_ALTIMA_AC1000)},
        {PCI_DEVICE(PCI_VENDOR_ID_ALTIMA, PCI_DEVICE_ID_ALTIMA_AC1001)},
        {PCI_DEVICE(PCI_VENDOR_ID_ALTIMA, PCI_DEVICE_ID_ALTIMA_AC1003)},
        {PCI_DEVICE(PCI_VENDOR_ID_ALTIMA, PCI_DEVICE_ID_ALTIMA_AC9100)},
        {PCI_DEVICE(PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_TIGON3)},
        {PCI_DEVICE(0x10cf, 0x11a2)}, /* Fujitsu 1000base-SX with BCM5703SKHB */
        {}
};

MODULE_DEVICE_TABLE(pci, tg3_pci_tbl);

static const struct {
        const char string[ETH_GSTRING_LEN];
} ethtool_stats_keys[] = {
        { "rx_octets" },
        { "rx_fragments" },
        { "rx_ucast_packets" },
        { "rx_mcast_packets" },
        { "rx_bcast_packets" },
        { "rx_fcs_errors" },
        { "rx_align_errors" },
        { "rx_xon_pause_rcvd" },
        { "rx_xoff_pause_rcvd" },
        { "rx_mac_ctrl_rcvd" },
        { "rx_xoff_entered" },
        { "rx_frame_too_long_errors" },
        { "rx_jabbers" },
        { "rx_undersize_packets" },
        { "rx_in_length_errors" },
        { "rx_out_length_errors" },
        { "rx_64_or_less_octet_packets" },
        { "rx_65_to_127_octet_packets" },
        { "rx_128_to_255_octet_packets" },
        { "rx_256_to_511_octet_packets" },
        { "rx_512_to_1023_octet_packets" },
        { "rx_1024_to_1522_octet_packets" },
        { "rx_1523_to_2047_octet_packets" },
        { "rx_2048_to_4095_octet_packets" },
        { "rx_4096_to_8191_octet_packets" },
        { "rx_8192_to_9022_octet_packets" },

        { "tx_octets" },
        { "tx_collisions" },

        { "tx_xon_sent" },
        { "tx_xoff_sent" },
        { "tx_flow_control" },
        { "tx_mac_errors" },
        { "tx_single_collisions" },
        { "tx_mult_collisions" },
        { "tx_deferred" },
        { "tx_excessive_collisions" },
        { "tx_late_collisions" },
        { "tx_collide_2times" },
        { "tx_collide_3times" },
        { "tx_collide_4times" },
        { "tx_collide_5times" },
        { "tx_collide_6times" },
        { "tx_collide_7times" },
        { "tx_collide_8times" },
        { "tx_collide_9times" },
        { "tx_collide_10times" },
        { "tx_collide_11times" },
        { "tx_collide_12times" },
        { "tx_collide_13times" },
        { "tx_collide_14times" },
        { "tx_collide_15times" },
        { "tx_ucast_packets" },
        { "tx_mcast_packets" },
        { "tx_bcast_packets" },
        { "tx_carrier_sense_errors" },
        { "tx_discards" },
        { "tx_errors" },

        { "dma_writeq_full" },
        { "dma_write_prioq_full" },
        { "rxbds_empty" },
        { "rx_discards" },
        { "rx_errors" },
        { "rx_threshold_hit" },

        { "dma_readq_full" },
        { "dma_read_prioq_full" },
        { "tx_comp_queue_full" },

        { "ring_set_send_prod_index" },
        { "ring_status_update" },
        { "nic_irqs" },
        { "nic_avoided_irqs" },
        { "nic_tx_threshold_hit" },

        { "mbuf_lwm_thresh_hit" },
};

#define TG3_NUM_STATS   ARRAY_SIZE(ethtool_stats_keys)


static const struct {
        const char string[ETH_GSTRING_LEN];
} ethtool_test_keys[] = {
        { "nvram test        (online) " },
        { "link test         (online) " },
        { "register test     (offline)" },
        { "memory test       (offline)" },
        { "mac loopback test (offline)" },
        { "phy loopback test (offline)" },
        { "ext loopback test (offline)" },
        { "interrupt test    (offline)" },
};

#define TG3_NUM_TEST    ARRAY_SIZE(ethtool_test_keys)


static void tg3_write32(struct tg3 *tp, u32 off, u32 val)
{
        writel(val, tp->regs + off);
}

static u32 tg3_read32(struct tg3 *tp, u32 off)
{
        return readl(tp->regs + off);
}

static void tg3_ape_write32(struct tg3 *tp, u32 off, u32 val)
{
        writel(val, tp->aperegs + off);
}

static u32 tg3_ape_read32(struct tg3 *tp, u32 off)
{
        return readl(tp->aperegs + off);
}

static void tg3_write_indirect_reg32(struct tg3 *tp, u32 off, u32 val)
{
        unsigned long flags;

        spin_lock_irqsave(&tp->indirect_lock, flags);
        pci_write_config_dword(tp->pdev, TG3PCI_REG_BASE_ADDR, off);
        pci_write_config_dword(tp->pdev, TG3PCI_REG_DATA, val);
        spin_unlock_irqrestore(&tp->indirect_lock, flags);
}

static void tg3_write_flush_reg32(struct tg3 *tp, u32 off, u32 val)
{
        writel(val, tp->regs + off);
        readl(tp->regs + off);
}

static u32 tg3_read_indirect_reg32(struct tg3 *tp, u32 off)
{
        unsigned long flags;
        u32 val;

        spin_lock_irqsave(&tp->indirect_lock, flags);
        pci_write_config_dword(tp->pdev, TG3PCI_REG_BASE_ADDR, off);
        pci_read_config_dword(tp->pdev, TG3PCI_REG_DATA, &val);
        spin_unlock_irqrestore(&tp->indirect_lock, flags);
        return val;
}

static void tg3_write_indirect_mbox(struct tg3 *tp, u32 off, u32 val)
{
        unsigned long flags;

        if (off == (MAILBOX_RCVRET_CON_IDX_0 + TG3_64BIT_REG_LOW)) {
                pci_write_config_dword(tp->pdev, TG3PCI_RCV_RET_RING_CON_IDX +
                                       TG3_64BIT_REG_LOW, val);
                return;
        }
        if (off == TG3_RX_STD_PROD_IDX_REG) {
                pci_write_config_dword(tp->pdev, TG3PCI_STD_RING_PROD_IDX +
                                       TG3_64BIT_REG_LOW, val);
                return;
        }

        spin_lock_irqsave(&tp->indirect_lock, flags);
        pci_write_config_dword(tp->pdev, TG3PCI_REG_BASE_ADDR, off + 0x5600);
        pci_write_config_dword(tp->pdev, TG3PCI_REG_DATA, val);
        spin_unlock_irqrestore(&tp->indirect_lock, flags);

        /* In indirect mode when disabling interrupts, we also need
         * to clear the interrupt bit in the GRC local ctrl register.
         */
        if ((off == (MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW)) &&
            (val == 0x1)) {
                pci_write_config_dword(tp->pdev, TG3PCI_MISC_LOCAL_CTRL,
                                       tp->grc_local_ctrl|GRC_LCLCTRL_CLEARINT);
        }
}

static u32 tg3_read_indirect_mbox(struct tg3 *tp, u32 off)
{
        unsigned long flags;
        u32 val;

        spin_lock_irqsave(&tp->indirect_lock, flags);
        pci_write_config_dword(tp->pdev, TG3PCI_REG_BASE_ADDR, off + 0x5600);
        pci_read_config_dword(tp->pdev, TG3PCI_REG_DATA, &val);
        spin_unlock_irqrestore(&tp->indirect_lock, flags);
        return val;
}

/* usec_wait specifies the wait time in usec when writing to certain registers
 * where it is unsafe to read back the register without some delay.
 * GRC_LOCAL_CTRL is one example if the GPIOs are toggled to switch power.
 * TG3PCI_CLOCK_CTRL is another example if the clock frequencies are changed.
 */
static void _tw32_flush(struct tg3 *tp, u32 off, u32 val, u32 usec_wait)
{
        if (tg3_flag(tp, PCIX_TARGET_HWBUG) || tg3_flag(tp, ICH_WORKAROUND))
                /* Non-posted methods */
                tp->write32(tp, off, val);
        else {
                /* Posted method */
                tg3_write32(tp, off, val);
                if (usec_wait)
                        udelay(usec_wait);
                tp->read32(tp, off);
        }
        /* Wait again after the read for the posted method to guarantee that
         * the wait time is met.
         */
        if (usec_wait)
                udelay(usec_wait);
}

static inline void tw32_mailbox_flush(struct tg3 *tp, u32 off, u32 val)
{
        tp->write32_mbox(tp, off, val);
        if (!tg3_flag(tp, MBOX_WRITE_REORDER) && !tg3_flag(tp, ICH_WORKAROUND))
                tp->read32_mbox(tp, off);
}

static void tg3_write32_tx_mbox(struct tg3 *tp, u32 off, u32 val)
{
        void __iomem *mbox = tp->regs + off;
        writel(val, mbox);
        if (tg3_flag(tp, TXD_MBOX_HWBUG))
                writel(val, mbox);
        if (tg3_flag(tp, MBOX_WRITE_REORDER))
                readl(mbox);
}

static u32 tg3_read32_mbox_5906(struct tg3 *tp, u32 off)
{
        return readl(tp->regs + off + GRCMBOX_BASE);
}

static void tg3_write32_mbox_5906(struct tg3 *tp, u32 off, u32 val)
{
        writel(val, tp->regs + off + GRCMBOX_BASE);
}

#define tw32_mailbox(reg, val)          tp->write32_mbox(tp, reg, val)
#define tw32_mailbox_f(reg, val)        tw32_mailbox_flush(tp, (reg), (val))
#define tw32_rx_mbox(reg, val)          tp->write32_rx_mbox(tp, reg, val)
#define tw32_tx_mbox(reg, val)          tp->write32_tx_mbox(tp, reg, val)
#define tr32_mailbox(reg)               tp->read32_mbox(tp, reg)

#define tw32(reg, val)                  tp->write32(tp, reg, val)
#define tw32_f(reg, val)                _tw32_flush(tp, (reg), (val), 0)
#define tw32_wait_f(reg, val, us)       _tw32_flush(tp, (reg), (val), (us))
#define tr32(reg)                       tp->read32(tp, reg)

static void tg3_write_mem(struct tg3 *tp, u32 off, u32 val)
{
        unsigned long flags;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906 &&
            (off >= NIC_SRAM_STATS_BLK) && (off < NIC_SRAM_TX_BUFFER_DESC))
                return;

        spin_lock_irqsave(&tp->indirect_lock, flags);
        if (tg3_flag(tp, SRAM_USE_CONFIG)) {
                pci_write_config_dword(tp->pdev, TG3PCI_MEM_WIN_BASE_ADDR, off);
                pci_write_config_dword(tp->pdev, TG3PCI_MEM_WIN_DATA, val);

                /* Always leave this as zero. */
                pci_write_config_dword(tp->pdev, TG3PCI_MEM_WIN_BASE_ADDR, 0);
        } else {
                tw32_f(TG3PCI_MEM_WIN_BASE_ADDR, off);
                tw32_f(TG3PCI_MEM_WIN_DATA, val);

                /* Always leave this as zero. */
                tw32_f(TG3PCI_MEM_WIN_BASE_ADDR, 0);
        }
        spin_unlock_irqrestore(&tp->indirect_lock, flags);
}

static void tg3_read_mem(struct tg3 *tp, u32 off, u32 *val)
{
        unsigned long flags;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906 &&
            (off >= NIC_SRAM_STATS_BLK) && (off < NIC_SRAM_TX_BUFFER_DESC)) {
                *val = 0;
                return;
        }

        spin_lock_irqsave(&tp->indirect_lock, flags);
        if (tg3_flag(tp, SRAM_USE_CONFIG)) {
                pci_write_config_dword(tp->pdev, TG3PCI_MEM_WIN_BASE_ADDR, off);
                pci_read_config_dword(tp->pdev, TG3PCI_MEM_WIN_DATA, val);

                /* Always leave this as zero. */
                pci_write_config_dword(tp->pdev, TG3PCI_MEM_WIN_BASE_ADDR, 0);
        } else {
                tw32_f(TG3PCI_MEM_WIN_BASE_ADDR, off);
                *val = tr32(TG3PCI_MEM_WIN_DATA);

                /* Always leave this as zero. */
                tw32_f(TG3PCI_MEM_WIN_BASE_ADDR, 0);
        }
        spin_unlock_irqrestore(&tp->indirect_lock, flags);
}

static void tg3_ape_lock_init(struct tg3 *tp)
{
        int i;
        u32 regbase, bit;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761)
                regbase = TG3_APE_LOCK_GRANT;
        else
                regbase = TG3_APE_PER_LOCK_GRANT;

        /* Make sure the driver hasn't any stale locks. */
        for (i = TG3_APE_LOCK_PHY0; i <= TG3_APE_LOCK_GPIO; i++) {
                switch (i) {
                case TG3_APE_LOCK_PHY0:
                case TG3_APE_LOCK_PHY1:
                case TG3_APE_LOCK_PHY2:
                case TG3_APE_LOCK_PHY3:
                        bit = APE_LOCK_GRANT_DRIVER;
                        break;
                default:
                        if (!tp->pci_fn)
                                bit = APE_LOCK_GRANT_DRIVER;
                        else
                                bit = 1 << tp->pci_fn;
                }
                tg3_ape_write32(tp, regbase + 4 * i, bit);
        }

}

static int tg3_ape_lock(struct tg3 *tp, int locknum)
{
        int i, off;
        int ret = 0;
        u32 status, req, gnt, bit;

        if (!tg3_flag(tp, ENABLE_APE))
                return 0;

        switch (locknum) {
        case TG3_APE_LOCK_GPIO:
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761)
                        return 0;
        case TG3_APE_LOCK_GRC:
        case TG3_APE_LOCK_MEM:
                if (!tp->pci_fn)
                        bit = APE_LOCK_REQ_DRIVER;
                else
                        bit = 1 << tp->pci_fn;
                break;
        default:
                return -EINVAL;
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761) {
                req = TG3_APE_LOCK_REQ;
                gnt = TG3_APE_LOCK_GRANT;
        } else {
                req = TG3_APE_PER_LOCK_REQ;
                gnt = TG3_APE_PER_LOCK_GRANT;
        }

        off = 4 * locknum;

        tg3_ape_write32(tp, req + off, bit);

        /* Wait for up to 1 millisecond to acquire lock. */
        for (i = 0; i < 100; i++) {
                status = tg3_ape_read32(tp, gnt + off);
                if (status == bit)
                        break;
                udelay(10);
        }

        if (status != bit) {
                /* Revoke the lock request. */
                tg3_ape_write32(tp, gnt + off, bit);
                ret = -EBUSY;
        }

        return ret;
}

static void tg3_ape_unlock(struct tg3 *tp, int locknum)
{
        u32 gnt, bit;

        if (!tg3_flag(tp, ENABLE_APE))
                return;

        switch (locknum) {
        case TG3_APE_LOCK_GPIO:
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761)
                        return;
        case TG3_APE_LOCK_GRC:
        case TG3_APE_LOCK_MEM:
                if (!tp->pci_fn)
                        bit = APE_LOCK_GRANT_DRIVER;
                else
                        bit = 1 << tp->pci_fn;
                break;
        default:
                return;
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761)
                gnt = TG3_APE_LOCK_GRANT;
        else
                gnt = TG3_APE_PER_LOCK_GRANT;

        tg3_ape_write32(tp, gnt + 4 * locknum, bit);
}

static void tg3_ape_send_event(struct tg3 *tp, u32 event)
{
        int i;
        u32 apedata;

        /* NCSI does not support APE events */
        if (tg3_flag(tp, APE_HAS_NCSI))
                return;

        apedata = tg3_ape_read32(tp, TG3_APE_SEG_SIG);
        if (apedata != APE_SEG_SIG_MAGIC)
                return;

        apedata = tg3_ape_read32(tp, TG3_APE_FW_STATUS);
        if (!(apedata & APE_FW_STATUS_READY))
                return;

        /* Wait for up to 1 millisecond for APE to service previous event. */
        for (i = 0; i < 10; i++) {
                if (tg3_ape_lock(tp, TG3_APE_LOCK_MEM))
                        return;

                apedata = tg3_ape_read32(tp, TG3_APE_EVENT_STATUS);

                if (!(apedata & APE_EVENT_STATUS_EVENT_PENDING))
                        tg3_ape_write32(tp, TG3_APE_EVENT_STATUS,
                                        event | APE_EVENT_STATUS_EVENT_PENDING);

                tg3_ape_unlock(tp, TG3_APE_LOCK_MEM);

                if (!(apedata & APE_EVENT_STATUS_EVENT_PENDING))
                        break;

                udelay(100);
        }

        if (!(apedata & APE_EVENT_STATUS_EVENT_PENDING))
                tg3_ape_write32(tp, TG3_APE_EVENT, APE_EVENT_1);
}

static void tg3_ape_driver_state_change(struct tg3 *tp, int kind)
{
        u32 event;
        u32 apedata;

        if (!tg3_flag(tp, ENABLE_APE))
                return;

        switch (kind) {
        case RESET_KIND_INIT:
                tg3_ape_write32(tp, TG3_APE_HOST_SEG_SIG,
                                APE_HOST_SEG_SIG_MAGIC);
                tg3_ape_write32(tp, TG3_APE_HOST_SEG_LEN,
                                APE_HOST_SEG_LEN_MAGIC);
                apedata = tg3_ape_read32(tp, TG3_APE_HOST_INIT_COUNT);
                tg3_ape_write32(tp, TG3_APE_HOST_INIT_COUNT, ++apedata);
                tg3_ape_write32(tp, TG3_APE_HOST_DRIVER_ID,
                        APE_HOST_DRIVER_ID_MAGIC(TG3_MAJ_NUM, TG3_MIN_NUM));
                tg3_ape_write32(tp, TG3_APE_HOST_BEHAVIOR,
                                APE_HOST_BEHAV_NO_PHYLOCK);
                tg3_ape_write32(tp, TG3_APE_HOST_DRVR_STATE,
                                    TG3_APE_HOST_DRVR_STATE_START);

                event = APE_EVENT_STATUS_STATE_START;
                break;
        case RESET_KIND_SHUTDOWN:
                /* With the interface we are currently using,
                 * APE does not track driver state.  Wiping
                 * out the HOST SEGMENT SIGNATURE forces
                 * the APE to assume OS absent status.
                 */
                tg3_ape_write32(tp, TG3_APE_HOST_SEG_SIG, 0x0);

                if (device_may_wakeup(&tp->pdev->dev) &&
                    tg3_flag(tp, WOL_ENABLE)) {
                        tg3_ape_write32(tp, TG3_APE_HOST_WOL_SPEED,
                                            TG3_APE_HOST_WOL_SPEED_AUTO);
                        apedata = TG3_APE_HOST_DRVR_STATE_WOL;
                } else
                        apedata = TG3_APE_HOST_DRVR_STATE_UNLOAD;

                tg3_ape_write32(tp, TG3_APE_HOST_DRVR_STATE, apedata);

                event = APE_EVENT_STATUS_STATE_UNLOAD;
                break;
        case RESET_KIND_SUSPEND:
                event = APE_EVENT_STATUS_STATE_SUSPEND;
                break;
        default:
                return;
        }

        event |= APE_EVENT_STATUS_DRIVER_EVNT | APE_EVENT_STATUS_STATE_CHNGE;

        tg3_ape_send_event(tp, event);
}

static void tg3_disable_ints(struct tg3 *tp)
{
        int i;

        tw32(TG3PCI_MISC_HOST_CTRL,
             (tp->misc_host_ctrl | MISC_HOST_CTRL_MASK_PCI_INT));
        for (i = 0; i < tp->irq_max; i++)
                tw32_mailbox_f(tp->napi[i].int_mbox, 0x00000001);
}

static void tg3_enable_ints(struct tg3 *tp)
{
        int i;

        tp->irq_sync = 0;
        wmb();

        tw32(TG3PCI_MISC_HOST_CTRL,
             (tp->misc_host_ctrl & ~MISC_HOST_CTRL_MASK_PCI_INT));

        tp->coal_now = tp->coalesce_mode | HOSTCC_MODE_ENABLE;
        for (i = 0; i < tp->irq_cnt; i++) {
                struct tg3_napi *tnapi = &tp->napi[i];

                tw32_mailbox_f(tnapi->int_mbox, tnapi->last_tag << 24);
                if (tg3_flag(tp, 1SHOT_MSI))
                        tw32_mailbox_f(tnapi->int_mbox, tnapi->last_tag << 24);

                tp->coal_now |= tnapi->coal_now;
        }

        /* Force an initial interrupt */
        if (!tg3_flag(tp, TAGGED_STATUS) &&
            (tp->napi[0].hw_status->status & SD_STATUS_UPDATED))
                tw32(GRC_LOCAL_CTRL, tp->grc_local_ctrl | GRC_LCLCTRL_SETINT);
        else
                tw32(HOSTCC_MODE, tp->coal_now);

        tp->coal_now &= ~(tp->napi[0].coal_now | tp->napi[1].coal_now);
}

static inline unsigned int tg3_has_work(struct tg3_napi *tnapi)
{
        struct tg3 *tp = tnapi->tp;
        struct tg3_hw_status *sblk = tnapi->hw_status;
        unsigned int work_exists = 0;

        /* check for phy events */
        if (!(tg3_flag(tp, USE_LINKCHG_REG) || tg3_flag(tp, POLL_SERDES))) {
                if (sblk->status & SD_STATUS_LINK_CHG)
                        work_exists = 1;
        }
        /* check for RX/TX work to do */
        if (sblk->idx[0].tx_consumer != tnapi->tx_cons ||
            *(tnapi->rx_rcb_prod_idx) != tnapi->rx_rcb_ptr)
                work_exists = 1;

        return work_exists;
}

/* tg3_int_reenable
 *  similar to tg3_enable_ints, but it accurately determines whether there
 *  is new work pending and can return without flushing the PIO write
 *  which reenables interrupts
 */
static void tg3_int_reenable(struct tg3_napi *tnapi)
{
        struct tg3 *tp = tnapi->tp;

        tw32_mailbox(tnapi->int_mbox, tnapi->last_tag << 24);
        mmiowb();

        /* When doing tagged status, this work check is unnecessary.
         * The last_tag we write above tells the chip which piece of
         * work we've completed.
         */
        if (!tg3_flag(tp, TAGGED_STATUS) && tg3_has_work(tnapi))
                tw32(HOSTCC_MODE, tp->coalesce_mode |
                     HOSTCC_MODE_ENABLE | tnapi->coal_now);
}

static void tg3_switch_clocks(struct tg3 *tp)
{
        u32 clock_ctrl;
        u32 orig_clock_ctrl;

        if (tg3_flag(tp, CPMU_PRESENT) || tg3_flag(tp, 5780_CLASS))
                return;

        clock_ctrl = tr32(TG3PCI_CLOCK_CTRL);

        orig_clock_ctrl = clock_ctrl;
        clock_ctrl &= (CLOCK_CTRL_FORCE_CLKRUN |
                       CLOCK_CTRL_CLKRUN_OENABLE |
                       0x1f);
        tp->pci_clock_ctrl = clock_ctrl;

        if (tg3_flag(tp, 5705_PLUS)) {
                if (orig_clock_ctrl & CLOCK_CTRL_625_CORE) {
                        tw32_wait_f(TG3PCI_CLOCK_CTRL,
                                    clock_ctrl | CLOCK_CTRL_625_CORE, 40);
                }
        } else if ((orig_clock_ctrl & CLOCK_CTRL_44MHZ_CORE) != 0) {
                tw32_wait_f(TG3PCI_CLOCK_CTRL,
                            clock_ctrl |
                            (CLOCK_CTRL_44MHZ_CORE | CLOCK_CTRL_ALTCLK),
                            40);
                tw32_wait_f(TG3PCI_CLOCK_CTRL,
                            clock_ctrl | (CLOCK_CTRL_ALTCLK),
                            40);
        }
        tw32_wait_f(TG3PCI_CLOCK_CTRL, clock_ctrl, 40);
}

#define PHY_BUSY_LOOPS  5000

static int tg3_readphy(struct tg3 *tp, int reg, u32 *val)
{
        u32 frame_val;
        unsigned int loops;
        int ret;

        if ((tp->mi_mode & MAC_MI_MODE_AUTO_POLL) != 0) {
                tw32_f(MAC_MI_MODE,
                     (tp->mi_mode & ~MAC_MI_MODE_AUTO_POLL));
                udelay(80);
        }

        *val = 0x0;

        frame_val  = ((tp->phy_addr << MI_COM_PHY_ADDR_SHIFT) &
                      MI_COM_PHY_ADDR_MASK);
        frame_val |= ((reg << MI_COM_REG_ADDR_SHIFT) &
                      MI_COM_REG_ADDR_MASK);
        frame_val |= (MI_COM_CMD_READ | MI_COM_START);

        tw32_f(MAC_MI_COM, frame_val);

        loops = PHY_BUSY_LOOPS;
        while (loops != 0) {
                udelay(10);
                frame_val = tr32(MAC_MI_COM);

                if ((frame_val & MI_COM_BUSY) == 0) {
                        udelay(5);
                        frame_val = tr32(MAC_MI_COM);
                        break;
                }
                loops -= 1;
        }

        ret = -EBUSY;
        if (loops != 0) {
                *val = frame_val & MI_COM_DATA_MASK;
                ret = 0;
        }

        if ((tp->mi_mode & MAC_MI_MODE_AUTO_POLL) != 0) {
                tw32_f(MAC_MI_MODE, tp->mi_mode);
                udelay(80);
        }

        return ret;
}

static int tg3_writephy(struct tg3 *tp, int reg, u32 val)
{
        u32 frame_val;
        unsigned int loops;
        int ret;

        if ((tp->phy_flags & TG3_PHYFLG_IS_FET) &&
            (reg == MII_CTRL1000 || reg == MII_TG3_AUX_CTRL))
                return 0;

        if ((tp->mi_mode & MAC_MI_MODE_AUTO_POLL) != 0) {
                tw32_f(MAC_MI_MODE,
                     (tp->mi_mode & ~MAC_MI_MODE_AUTO_POLL));
                udelay(80);
        }

        frame_val  = ((tp->phy_addr << MI_COM_PHY_ADDR_SHIFT) &
                      MI_COM_PHY_ADDR_MASK);
        frame_val |= ((reg << MI_COM_REG_ADDR_SHIFT) &
                      MI_COM_REG_ADDR_MASK);
        frame_val |= (val & MI_COM_DATA_MASK);
        frame_val |= (MI_COM_CMD_WRITE | MI_COM_START);

        tw32_f(MAC_MI_COM, frame_val);

        loops = PHY_BUSY_LOOPS;
        while (loops != 0) {
                udelay(10);
                frame_val = tr32(MAC_MI_COM);
                if ((frame_val & MI_COM_BUSY) == 0) {
                        udelay(5);
                        frame_val = tr32(MAC_MI_COM);
                        break;
                }
                loops -= 1;
        }

        ret = -EBUSY;
        if (loops != 0)
                ret = 0;

        if ((tp->mi_mode & MAC_MI_MODE_AUTO_POLL) != 0) {
                tw32_f(MAC_MI_MODE, tp->mi_mode);
                udelay(80);
        }

        return ret;
}

static int tg3_phy_cl45_write(struct tg3 *tp, u32 devad, u32 addr, u32 val)
{
        int err;

        err = tg3_writephy(tp, MII_TG3_MMD_CTRL, devad);
        if (err)
                goto done;

        err = tg3_writephy(tp, MII_TG3_MMD_ADDRESS, addr);
        if (err)
                goto done;

        err = tg3_writephy(tp, MII_TG3_MMD_CTRL,
                           MII_TG3_MMD_CTRL_DATA_NOINC | devad);
        if (err)
                goto done;

        err = tg3_writephy(tp, MII_TG3_MMD_ADDRESS, val);

done:
        return err;
}

static int tg3_phy_cl45_read(struct tg3 *tp, u32 devad, u32 addr, u32 *val)
{
        int err;

        err = tg3_writephy(tp, MII_TG3_MMD_CTRL, devad);
        if (err)
                goto done;

        err = tg3_writephy(tp, MII_TG3_MMD_ADDRESS, addr);
        if (err)
                goto done;

        err = tg3_writephy(tp, MII_TG3_MMD_CTRL,
                           MII_TG3_MMD_CTRL_DATA_NOINC | devad);
        if (err)
                goto done;

        err = tg3_readphy(tp, MII_TG3_MMD_ADDRESS, val);

done:
        return err;
}

static int tg3_phydsp_read(struct tg3 *tp, u32 reg, u32 *val)
{
        int err;

        err = tg3_writephy(tp, MII_TG3_DSP_ADDRESS, reg);
        if (!err)
                err = tg3_readphy(tp, MII_TG3_DSP_RW_PORT, val);

        return err;
}

static int tg3_phydsp_write(struct tg3 *tp, u32 reg, u32 val)
{
        int err;

        err = tg3_writephy(tp, MII_TG3_DSP_ADDRESS, reg);
        if (!err)
                err = tg3_writephy(tp, MII_TG3_DSP_RW_PORT, val);

        return err;
}

static int tg3_phy_auxctl_read(struct tg3 *tp, int reg, u32 *val)
{
        int err;

        err = tg3_writephy(tp, MII_TG3_AUX_CTRL,
                           (reg << MII_TG3_AUXCTL_MISC_RDSEL_SHIFT) |
                           MII_TG3_AUXCTL_SHDWSEL_MISC);
        if (!err)
                err = tg3_readphy(tp, MII_TG3_AUX_CTRL, val);

        return err;
}

static int tg3_phy_auxctl_write(struct tg3 *tp, int reg, u32 set)
{
        if (reg == MII_TG3_AUXCTL_SHDWSEL_MISC)
                set |= MII_TG3_AUXCTL_MISC_WREN;

        return tg3_writephy(tp, MII_TG3_AUX_CTRL, set | reg);
}

#define TG3_PHY_AUXCTL_SMDSP_ENABLE(tp) \
        tg3_phy_auxctl_write((tp), MII_TG3_AUXCTL_SHDWSEL_AUXCTL, \
                             MII_TG3_AUXCTL_ACTL_SMDSP_ENA | \
                             MII_TG3_AUXCTL_ACTL_TX_6DB)

#define TG3_PHY_AUXCTL_SMDSP_DISABLE(tp) \
        tg3_phy_auxctl_write((tp), MII_TG3_AUXCTL_SHDWSEL_AUXCTL, \
                             MII_TG3_AUXCTL_ACTL_TX_6DB);

static int tg3_bmcr_reset(struct tg3 *tp)
{
        u32 phy_control;
        int limit, err;

        /* OK, reset it, and poll the BMCR_RESET bit until it
         * clears or we time out.
         */
        phy_control = BMCR_RESET;
        err = tg3_writephy(tp, MII_BMCR, phy_control);
        if (err != 0)
                return -EBUSY;

        limit = 5000;
        while (limit--) {
                err = tg3_readphy(tp, MII_BMCR, &phy_control);
                if (err != 0)
                        return -EBUSY;

                if ((phy_control & BMCR_RESET) == 0) {
                        udelay(40);
                        break;
                }
                udelay(10);
        }
        if (limit < 0)
                return -EBUSY;

        return 0;
}

static int tg3_mdio_read(struct mii_bus *bp, int mii_id, int reg)
{
        struct tg3 *tp = bp->priv;
        u32 val;

        spin_lock_bh(&tp->lock);

        if (tg3_readphy(tp, reg, &val))
                val = -EIO;

        spin_unlock_bh(&tp->lock);

        return val;
}

static int tg3_mdio_write(struct mii_bus *bp, int mii_id, int reg, u16 val)
{
        struct tg3 *tp = bp->priv;
        u32 ret = 0;

        spin_lock_bh(&tp->lock);

        if (tg3_writephy(tp, reg, val))
                ret = -EIO;

        spin_unlock_bh(&tp->lock);

        return ret;
}

static int tg3_mdio_reset(struct mii_bus *bp)
{
        return 0;
}

static void tg3_mdio_config_5785(struct tg3 *tp)
{
        u32 val;
        struct phy_device *phydev;

        phydev = tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR];
        switch (phydev->drv->phy_id & phydev->drv->phy_id_mask) {
        case PHY_ID_BCM50610:
        case PHY_ID_BCM50610M:
                val = MAC_PHYCFG2_50610_LED_MODES;
                break;
        case PHY_ID_BCMAC131:
                val = MAC_PHYCFG2_AC131_LED_MODES;
                break;
        case PHY_ID_RTL8211C:
                val = MAC_PHYCFG2_RTL8211C_LED_MODES;
                break;
        case PHY_ID_RTL8201E:
                val = MAC_PHYCFG2_RTL8201E_LED_MODES;
                break;
        default:
                return;
        }

        if (phydev->interface != PHY_INTERFACE_MODE_RGMII) {
                tw32(MAC_PHYCFG2, val);

                val = tr32(MAC_PHYCFG1);
                val &= ~(MAC_PHYCFG1_RGMII_INT |
                         MAC_PHYCFG1_RXCLK_TO_MASK | MAC_PHYCFG1_TXCLK_TO_MASK);
                val |= MAC_PHYCFG1_RXCLK_TIMEOUT | MAC_PHYCFG1_TXCLK_TIMEOUT;
                tw32(MAC_PHYCFG1, val);

                return;
        }

        if (!tg3_flag(tp, RGMII_INBAND_DISABLE))
                val |= MAC_PHYCFG2_EMODE_MASK_MASK |
                       MAC_PHYCFG2_FMODE_MASK_MASK |
                       MAC_PHYCFG2_GMODE_MASK_MASK |
                       MAC_PHYCFG2_ACT_MASK_MASK   |
                       MAC_PHYCFG2_QUAL_MASK_MASK |
                       MAC_PHYCFG2_INBAND_ENABLE;

        tw32(MAC_PHYCFG2, val);

        val = tr32(MAC_PHYCFG1);
        val &= ~(MAC_PHYCFG1_RXCLK_TO_MASK | MAC_PHYCFG1_TXCLK_TO_MASK |
                 MAC_PHYCFG1_RGMII_EXT_RX_DEC | MAC_PHYCFG1_RGMII_SND_STAT_EN);
        if (!tg3_flag(tp, RGMII_INBAND_DISABLE)) {
                if (tg3_flag(tp, RGMII_EXT_IBND_RX_EN))
                        val |= MAC_PHYCFG1_RGMII_EXT_RX_DEC;
                if (tg3_flag(tp, RGMII_EXT_IBND_TX_EN))
                        val |= MAC_PHYCFG1_RGMII_SND_STAT_EN;
        }
        val |= MAC_PHYCFG1_RXCLK_TIMEOUT | MAC_PHYCFG1_TXCLK_TIMEOUT |
               MAC_PHYCFG1_RGMII_INT | MAC_PHYCFG1_TXC_DRV;
        tw32(MAC_PHYCFG1, val);

        val = tr32(MAC_EXT_RGMII_MODE);
        val &= ~(MAC_RGMII_MODE_RX_INT_B |
                 MAC_RGMII_MODE_RX_QUALITY |
                 MAC_RGMII_MODE_RX_ACTIVITY |
                 MAC_RGMII_MODE_RX_ENG_DET |
                 MAC_RGMII_MODE_TX_ENABLE |
                 MAC_RGMII_MODE_TX_LOWPWR |
                 MAC_RGMII_MODE_TX_RESET);
        if (!tg3_flag(tp, RGMII_INBAND_DISABLE)) {
                if (tg3_flag(tp, RGMII_EXT_IBND_RX_EN))
                        val |= MAC_RGMII_MODE_RX_INT_B |
                               MAC_RGMII_MODE_RX_QUALITY |
                               MAC_RGMII_MODE_RX_ACTIVITY |
                               MAC_RGMII_MODE_RX_ENG_DET;
                if (tg3_flag(tp, RGMII_EXT_IBND_TX_EN))
                        val |= MAC_RGMII_MODE_TX_ENABLE |
                               MAC_RGMII_MODE_TX_LOWPWR |
                               MAC_RGMII_MODE_TX_RESET;
        }
        tw32(MAC_EXT_RGMII_MODE, val);
}

static void tg3_mdio_start(struct tg3 *tp)
{
        tp->mi_mode &= ~MAC_MI_MODE_AUTO_POLL;
        tw32_f(MAC_MI_MODE, tp->mi_mode);
        udelay(80);

        if (tg3_flag(tp, MDIOBUS_INITED) &&
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785)
                tg3_mdio_config_5785(tp);
}

static int tg3_mdio_init(struct tg3 *tp)
{
        int i;
        u32 reg;
        struct phy_device *phydev;

        if (tg3_flag(tp, 5717_PLUS)) {
                u32 is_serdes;

                tp->phy_addr = tp->pci_fn + 1;

                if (tp->pci_chip_rev_id != CHIPREV_ID_5717_A0)
                        is_serdes = tr32(SG_DIG_STATUS) & SG_DIG_IS_SERDES;
                else
                        is_serdes = tr32(TG3_CPMU_PHY_STRAP) &
                                    TG3_CPMU_PHY_STRAP_IS_SERDES;
                if (is_serdes)
                        tp->phy_addr += 7;
        } else
                tp->phy_addr = TG3_PHY_MII_ADDR;

        tg3_mdio_start(tp);

        if (!tg3_flag(tp, USE_PHYLIB) || tg3_flag(tp, MDIOBUS_INITED))
                return 0;

        tp->mdio_bus = mdiobus_alloc();
        if (tp->mdio_bus == NULL)
                return -ENOMEM;

        tp->mdio_bus->name     = "tg3 mdio bus";
        snprintf(tp->mdio_bus->id, MII_BUS_ID_SIZE, "%x",
                 (tp->pdev->bus->number << 8) | tp->pdev->devfn);
        tp->mdio_bus->priv     = tp;
        tp->mdio_bus->parent   = &tp->pdev->dev;
        tp->mdio_bus->read     = &tg3_mdio_read;
        tp->mdio_bus->write    = &tg3_mdio_write;
        tp->mdio_bus->reset    = &tg3_mdio_reset;
        tp->mdio_bus->phy_mask = ~(1 << TG3_PHY_MII_ADDR);
        tp->mdio_bus->irq      = &tp->mdio_irq[0];

        for (i = 0; i < PHY_MAX_ADDR; i++)
                tp->mdio_bus->irq[i] = PHY_POLL;

        /* The bus registration will look for all the PHYs on the mdio bus.
         * Unfortunately, it does not ensure the PHY is powered up before
         * accessing the PHY ID registers.  A chip reset is the
         * quickest way to bring the device back to an operational state..
         */
        if (tg3_readphy(tp, MII_BMCR, &reg) || (reg & BMCR_PDOWN))
                tg3_bmcr_reset(tp);

        i = mdiobus_register(tp->mdio_bus);
        if (i) {
                dev_warn(&tp->pdev->dev, "mdiobus_reg failed (0x%x)\n", i);
                mdiobus_free(tp->mdio_bus);
                return i;
        }

        phydev = tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR];

        if (!phydev || !phydev->drv) {
                dev_warn(&tp->pdev->dev, "No PHY devices\n");
                mdiobus_unregister(tp->mdio_bus);
                mdiobus_free(tp->mdio_bus);
                return -ENODEV;
        }

        switch (phydev->drv->phy_id & phydev->drv->phy_id_mask) {
        case PHY_ID_BCM57780:
                phydev->interface = PHY_INTERFACE_MODE_GMII;
                phydev->dev_flags |= PHY_BRCM_AUTO_PWRDWN_ENABLE;
                break;
        case PHY_ID_BCM50610:
        case PHY_ID_BCM50610M:
                phydev->dev_flags |= PHY_BRCM_CLEAR_RGMII_MODE |
                                     PHY_BRCM_RX_REFCLK_UNUSED |
                                     PHY_BRCM_DIS_TXCRXC_NOENRGY |
                                     PHY_BRCM_AUTO_PWRDWN_ENABLE;
                if (tg3_flag(tp, RGMII_INBAND_DISABLE))
                        phydev->dev_flags |= PHY_BRCM_STD_IBND_DISABLE;
                if (tg3_flag(tp, RGMII_EXT_IBND_RX_EN))
                        phydev->dev_flags |= PHY_BRCM_EXT_IBND_RX_ENABLE;
                if (tg3_flag(tp, RGMII_EXT_IBND_TX_EN))
                        phydev->dev_flags |= PHY_BRCM_EXT_IBND_TX_ENABLE;
                /* fallthru */
        case PHY_ID_RTL8211C:
                phydev->interface = PHY_INTERFACE_MODE_RGMII;
                break;
        case PHY_ID_RTL8201E:
        case PHY_ID_BCMAC131:
                phydev->interface = PHY_INTERFACE_MODE_MII;
                phydev->dev_flags |= PHY_BRCM_AUTO_PWRDWN_ENABLE;
                tp->phy_flags |= TG3_PHYFLG_IS_FET;
                break;
        }

        tg3_flag_set(tp, MDIOBUS_INITED);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785)
                tg3_mdio_config_5785(tp);

        return 0;
}

static void tg3_mdio_fini(struct tg3 *tp)
{
        if (tg3_flag(tp, MDIOBUS_INITED)) {
                tg3_flag_clear(tp, MDIOBUS_INITED);
                mdiobus_unregister(tp->mdio_bus);
                mdiobus_free(tp->mdio_bus);
        }
}

/* tp->lock is held. */
static inline void tg3_generate_fw_event(struct tg3 *tp)
{
        u32 val;

        val = tr32(GRC_RX_CPU_EVENT);
        val |= GRC_RX_CPU_DRIVER_EVENT;
        tw32_f(GRC_RX_CPU_EVENT, val);

        tp->last_event_jiffies = jiffies;
}

#define TG3_FW_EVENT_TIMEOUT_USEC 2500

/* tp->lock is held. */
static void tg3_wait_for_event_ack(struct tg3 *tp)
{
        int i;
        unsigned int delay_cnt;
        long time_remain;

        /* If enough time has passed, no wait is necessary. */
        time_remain = (long)(tp->last_event_jiffies + 1 +
                      usecs_to_jiffies(TG3_FW_EVENT_TIMEOUT_USEC)) -
                      (long)jiffies;
        if (time_remain < 0)
                return;

        /* Check if we can shorten the wait time. */
        delay_cnt = jiffies_to_usecs(time_remain);
        if (delay_cnt > TG3_FW_EVENT_TIMEOUT_USEC)
                delay_cnt = TG3_FW_EVENT_TIMEOUT_USEC;
        delay_cnt = (delay_cnt >> 3) + 1;

        for (i = 0; i < delay_cnt; i++) {
                if (!(tr32(GRC_RX_CPU_EVENT) & GRC_RX_CPU_DRIVER_EVENT))
                        break;
                udelay(8);
        }
}

/* tp->lock is held. */
static void tg3_ump_link_report(struct tg3 *tp)
{
        u32 reg;
        u32 val;

        if (!tg3_flag(tp, 5780_CLASS) || !tg3_flag(tp, ENABLE_ASF))
                return;

        tg3_wait_for_event_ack(tp);

        tg3_write_mem(tp, NIC_SRAM_FW_CMD_MBOX, FWCMD_NICDRV_LINK_UPDATE);

        tg3_write_mem(tp, NIC_SRAM_FW_CMD_LEN_MBOX, 14);

        val = 0;
        if (!tg3_readphy(tp, MII_BMCR, &reg))
                val = reg << 16;
        if (!tg3_readphy(tp, MII_BMSR, &reg))
                val |= (reg & 0xffff);
        tg3_write_mem(tp, NIC_SRAM_FW_CMD_DATA_MBOX, val);

        val = 0;
        if (!tg3_readphy(tp, MII_ADVERTISE, &reg))
                val = reg << 16;
        if (!tg3_readphy(tp, MII_LPA, &reg))
                val |= (reg & 0xffff);
        tg3_write_mem(tp, NIC_SRAM_FW_CMD_DATA_MBOX + 4, val);

        val = 0;
        if (!(tp->phy_flags & TG3_PHYFLG_MII_SERDES)) {
                if (!tg3_readphy(tp, MII_CTRL1000, &reg))
                        val = reg << 16;
                if (!tg3_readphy(tp, MII_STAT1000, &reg))
                        val |= (reg & 0xffff);
        }
        tg3_write_mem(tp, NIC_SRAM_FW_CMD_DATA_MBOX + 8, val);

        if (!tg3_readphy(tp, MII_PHYADDR, &reg))
                val = reg << 16;
        else
                val = 0;
        tg3_write_mem(tp, NIC_SRAM_FW_CMD_DATA_MBOX + 12, val);

        tg3_generate_fw_event(tp);
}

/* tp->lock is held. */
static void tg3_stop_fw(struct tg3 *tp)
{
        if (tg3_flag(tp, ENABLE_ASF) && !tg3_flag(tp, ENABLE_APE)) {
                /* Wait for RX cpu to ACK the previous event. */
                tg3_wait_for_event_ack(tp);

                tg3_write_mem(tp, NIC_SRAM_FW_CMD_MBOX, FWCMD_NICDRV_PAUSE_FW);

                tg3_generate_fw_event(tp);

                /* Wait for RX cpu to ACK this event. */
                tg3_wait_for_event_ack(tp);
        }
}

/* tp->lock is held. */
static void tg3_write_sig_pre_reset(struct tg3 *tp, int kind)
{
        tg3_write_mem(tp, NIC_SRAM_FIRMWARE_MBOX,
                      NIC_SRAM_FIRMWARE_MBOX_MAGIC1);

        if (tg3_flag(tp, ASF_NEW_HANDSHAKE)) {
                switch (kind) {
                case RESET_KIND_INIT:
                        tg3_write_mem(tp, NIC_SRAM_FW_DRV_STATE_MBOX,
                                      DRV_STATE_START);
                        break;

                case RESET_KIND_SHUTDOWN:
                        tg3_write_mem(tp, NIC_SRAM_FW_DRV_STATE_MBOX,
                                      DRV_STATE_UNLOAD);
                        break;

                case RESET_KIND_SUSPEND:
                        tg3_write_mem(tp, NIC_SRAM_FW_DRV_STATE_MBOX,
                                      DRV_STATE_SUSPEND);
                        break;

                default:
                        break;
                }
        }

        if (kind == RESET_KIND_INIT ||
            kind == RESET_KIND_SUSPEND)
                tg3_ape_driver_state_change(tp, kind);
}

/* tp->lock is held. */
static void tg3_write_sig_post_reset(struct tg3 *tp, int kind)
{
        if (tg3_flag(tp, ASF_NEW_HANDSHAKE)) {
                switch (kind) {
                case RESET_KIND_INIT:
                        tg3_write_mem(tp, NIC_SRAM_FW_DRV_STATE_MBOX,
                                      DRV_STATE_START_DONE);
                        break;

                case RESET_KIND_SHUTDOWN:
                        tg3_write_mem(tp, NIC_SRAM_FW_DRV_STATE_MBOX,
                                      DRV_STATE_UNLOAD_DONE);
                        break;

                default:
                        break;
                }
        }

        if (kind == RESET_KIND_SHUTDOWN)
                tg3_ape_driver_state_change(tp, kind);
}

/* tp->lock is held. */
static void tg3_write_sig_legacy(struct tg3 *tp, int kind)
{
        if (tg3_flag(tp, ENABLE_ASF)) {
                switch (kind) {
                case RESET_KIND_INIT:
                        tg3_write_mem(tp, NIC_SRAM_FW_DRV_STATE_MBOX,
                                      DRV_STATE_START);
                        break;

                case RESET_KIND_SHUTDOWN:
                        tg3_write_mem(tp, NIC_SRAM_FW_DRV_STATE_MBOX,
                                      DRV_STATE_UNLOAD);
                        break;

                case RESET_KIND_SUSPEND:
                        tg3_write_mem(tp, NIC_SRAM_FW_DRV_STATE_MBOX,
                                      DRV_STATE_SUSPEND);
                        break;

                default:
                        break;
                }
        }
}

static int tg3_poll_fw(struct tg3 *tp)
{
        int i;
        u32 val;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                /* Wait up to 20ms for init done. */
                for (i = 0; i < 200; i++) {
                        if (tr32(VCPU_STATUS) & VCPU_STATUS_INIT_DONE)
                                return 0;
                        udelay(100);
                }
                return -ENODEV;
        }

        /* Wait for firmware initialization to complete. */
        for (i = 0; i < 100000; i++) {
                tg3_read_mem(tp, NIC_SRAM_FIRMWARE_MBOX, &val);
                if (val == ~NIC_SRAM_FIRMWARE_MBOX_MAGIC1)
                        break;
                udelay(10);
        }

        /* Chip might not be fitted with firmware.  Some Sun onboard
         * parts are configured like that.  So don't signal the timeout
         * of the above loop as an error, but do report the lack of
         * running firmware once.
         */
        if (i >= 100000 && !tg3_flag(tp, NO_FWARE_REPORTED)) {
                tg3_flag_set(tp, NO_FWARE_REPORTED);

                netdev_info(tp->dev, "No firmware running\n");
        }

        if (tp->pci_chip_rev_id == CHIPREV_ID_57765_A0) {
                /* The 57765 A0 needs a little more
                 * time to do some important work.
                 */
                mdelay(10);
        }

        return 0;
}

static void tg3_link_report(struct tg3 *tp)
{
        if (!netif_carrier_ok(tp->dev)) {
                netif_info(tp, link, tp->dev, "Link is down\n");
                tg3_ump_link_report(tp);
        } else if (netif_msg_link(tp)) {
                netdev_info(tp->dev, "Link is up at %d Mbps, %s duplex\n",
                            (tp->link_config.active_speed == SPEED_1000 ?
                             1000 :
                             (tp->link_config.active_speed == SPEED_100 ?
                              100 : 10)),
                            (tp->link_config.active_duplex == DUPLEX_FULL ?
                             "full" : "half"));

                netdev_info(tp->dev, "Flow control is %s for TX and %s for RX\n",
                            (tp->link_config.active_flowctrl & FLOW_CTRL_TX) ?
                            "on" : "off",
                            (tp->link_config.active_flowctrl & FLOW_CTRL_RX) ?
                            "on" : "off");

                if (tp->phy_flags & TG3_PHYFLG_EEE_CAP)
                        netdev_info(tp->dev, "EEE is %s\n",
                                    tp->setlpicnt ? "enabled" : "disabled");

                tg3_ump_link_report(tp);
        }
}

static u16 tg3_advert_flowctrl_1000T(u8 flow_ctrl)
{
        u16 miireg;

        if ((flow_ctrl & FLOW_CTRL_TX) && (flow_ctrl & FLOW_CTRL_RX))
                miireg = ADVERTISE_PAUSE_CAP;
        else if (flow_ctrl & FLOW_CTRL_TX)
                miireg = ADVERTISE_PAUSE_ASYM;
        else if (flow_ctrl & FLOW_CTRL_RX)
                miireg = ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
        else
                miireg = 0;

        return miireg;
}

static u16 tg3_advert_flowctrl_1000X(u8 flow_ctrl)
{
        u16 miireg;

        if ((flow_ctrl & FLOW_CTRL_TX) && (flow_ctrl & FLOW_CTRL_RX))
                miireg = ADVERTISE_1000XPAUSE;
        else if (flow_ctrl & FLOW_CTRL_TX)
                miireg = ADVERTISE_1000XPSE_ASYM;
        else if (flow_ctrl & FLOW_CTRL_RX)
                miireg = ADVERTISE_1000XPAUSE | ADVERTISE_1000XPSE_ASYM;
        else
                miireg = 0;

        return miireg;
}

static u8 tg3_resolve_flowctrl_1000X(u16 lcladv, u16 rmtadv)
{
        u8 cap = 0;

        if (lcladv & ADVERTISE_1000XPAUSE) {
                if (lcladv & ADVERTISE_1000XPSE_ASYM) {
                        if (rmtadv & LPA_1000XPAUSE)
                                cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
                        else if (rmtadv & LPA_1000XPAUSE_ASYM)
                                cap = FLOW_CTRL_RX;
                } else {
                        if (rmtadv & LPA_1000XPAUSE)
                                cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
                }
        } else if (lcladv & ADVERTISE_1000XPSE_ASYM) {
                if ((rmtadv & LPA_1000XPAUSE) && (rmtadv & LPA_1000XPAUSE_ASYM))
                        cap = FLOW_CTRL_TX;
        }

        return cap;
}

static void tg3_setup_flow_control(struct tg3 *tp, u32 lcladv, u32 rmtadv)
{
        u8 autoneg;
        u8 flowctrl = 0;
        u32 old_rx_mode = tp->rx_mode;
        u32 old_tx_mode = tp->tx_mode;

        if (tg3_flag(tp, USE_PHYLIB))
                autoneg = tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR]->autoneg;
        else
                autoneg = tp->link_config.autoneg;

        if (autoneg == AUTONEG_ENABLE && tg3_flag(tp, PAUSE_AUTONEG)) {
                if (tp->phy_flags & TG3_PHYFLG_ANY_SERDES)
                        flowctrl = tg3_resolve_flowctrl_1000X(lcladv, rmtadv);
                else
                        flowctrl = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
        } else
                flowctrl = tp->link_config.flowctrl;

        tp->link_config.active_flowctrl = flowctrl;

        if (flowctrl & FLOW_CTRL_RX)
                tp->rx_mode |= RX_MODE_FLOW_CTRL_ENABLE;
        else
                tp->rx_mode &= ~RX_MODE_FLOW_CTRL_ENABLE;

        if (old_rx_mode != tp->rx_mode)
                tw32_f(MAC_RX_MODE, tp->rx_mode);

        if (flowctrl & FLOW_CTRL_TX)
                tp->tx_mode |= TX_MODE_FLOW_CTRL_ENABLE;
        else
                tp->tx_mode &= ~TX_MODE_FLOW_CTRL_ENABLE;

        if (old_tx_mode != tp->tx_mode)
                tw32_f(MAC_TX_MODE, tp->tx_mode);
}

static void tg3_adjust_link(struct net_device *dev)
{
        u8 oldflowctrl, linkmesg = 0;
        u32 mac_mode, lcl_adv, rmt_adv;
        struct tg3 *tp = netdev_priv(dev);
        struct phy_device *phydev = tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR];

        spin_lock_bh(&tp->lock);

        mac_mode = tp->mac_mode & ~(MAC_MODE_PORT_MODE_MASK |
                                    MAC_MODE_HALF_DUPLEX);

        oldflowctrl = tp->link_config.active_flowctrl;

        if (phydev->link) {
                lcl_adv = 0;
                rmt_adv = 0;

                if (phydev->speed == SPEED_100 || phydev->speed == SPEED_10)
                        mac_mode |= MAC_MODE_PORT_MODE_MII;
                else if (phydev->speed == SPEED_1000 ||
                         GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5785)
                        mac_mode |= MAC_MODE_PORT_MODE_GMII;
                else
                        mac_mode |= MAC_MODE_PORT_MODE_MII;

                if (phydev->duplex == DUPLEX_HALF)
                        mac_mode |= MAC_MODE_HALF_DUPLEX;
                else {
                        lcl_adv = tg3_advert_flowctrl_1000T(
                                  tp->link_config.flowctrl);

                        if (phydev->pause)
                                rmt_adv = LPA_PAUSE_CAP;
                        if (phydev->asym_pause)
                                rmt_adv |= LPA_PAUSE_ASYM;
                }

                tg3_setup_flow_control(tp, lcl_adv, rmt_adv);
        } else
                mac_mode |= MAC_MODE_PORT_MODE_GMII;

        if (mac_mode != tp->mac_mode) {
                tp->mac_mode = mac_mode;
                tw32_f(MAC_MODE, tp->mac_mode);
                udelay(40);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785) {
                if (phydev->speed == SPEED_10)
                        tw32(MAC_MI_STAT,
                             MAC_MI_STAT_10MBPS_MODE |
                             MAC_MI_STAT_LNKSTAT_ATTN_ENAB);
                else
                        tw32(MAC_MI_STAT, MAC_MI_STAT_LNKSTAT_ATTN_ENAB);
        }

        if (phydev->speed == SPEED_1000 && phydev->duplex == DUPLEX_HALF)
                tw32(MAC_TX_LENGTHS,
                     ((2 << TX_LENGTHS_IPG_CRS_SHIFT) |
                      (6 << TX_LENGTHS_IPG_SHIFT) |
                      (0xff << TX_LENGTHS_SLOT_TIME_SHIFT)));
        else
                tw32(MAC_TX_LENGTHS,
                     ((2 << TX_LENGTHS_IPG_CRS_SHIFT) |
                      (6 << TX_LENGTHS_IPG_SHIFT) |
                      (32 << TX_LENGTHS_SLOT_TIME_SHIFT)));

        if ((phydev->link && tp->link_config.active_speed == SPEED_INVALID) ||
            (!phydev->link && tp->link_config.active_speed != SPEED_INVALID) ||
            phydev->speed != tp->link_config.active_speed ||
            phydev->duplex != tp->link_config.active_duplex ||
            oldflowctrl != tp->link_config.active_flowctrl)
                linkmesg = 1;

        tp->link_config.active_speed = phydev->speed;
        tp->link_config.active_duplex = phydev->duplex;

        spin_unlock_bh(&tp->lock);

        if (linkmesg)
                tg3_link_report(tp);
}

static int tg3_phy_init(struct tg3 *tp)
{
        struct phy_device *phydev;

        if (tp->phy_flags & TG3_PHYFLG_IS_CONNECTED)
                return 0;

        /* Bring the PHY back to a known state. */
        tg3_bmcr_reset(tp);

        phydev = tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR];

        /* Attach the MAC to the PHY. */
        phydev = phy_connect(tp->dev, dev_name(&phydev->dev), tg3_adjust_link,
                             phydev->dev_flags, phydev->interface);
        if (IS_ERR(phydev)) {
                dev_err(&tp->pdev->dev, "Could not attach to PHY\n");
                return PTR_ERR(phydev);
        }

        /* Mask with MAC supported features. */
        switch (phydev->interface) {
        case PHY_INTERFACE_MODE_GMII:
        case PHY_INTERFACE_MODE_RGMII:
                if (!(tp->phy_flags & TG3_PHYFLG_10_100_ONLY)) {
                        phydev->supported &= (PHY_GBIT_FEATURES |
                                              SUPPORTED_Pause |
                                              SUPPORTED_Asym_Pause);
                        break;
                }
                /* fallthru */
        case PHY_INTERFACE_MODE_MII:
                phydev->supported &= (PHY_BASIC_FEATURES |
                                      SUPPORTED_Pause |
                                      SUPPORTED_Asym_Pause);
                break;
        default:
                phy_disconnect(tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR]);
                return -EINVAL;
        }

        tp->phy_flags |= TG3_PHYFLG_IS_CONNECTED;

        phydev->advertising = phydev->supported;

        return 0;
}

static void tg3_phy_start(struct tg3 *tp)
{
        struct phy_device *phydev;

        if (!(tp->phy_flags & TG3_PHYFLG_IS_CONNECTED))
                return;

        phydev = tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR];

        if (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER) {
                tp->phy_flags &= ~TG3_PHYFLG_IS_LOW_POWER;
                phydev->speed = tp->link_config.orig_speed;
                phydev->duplex = tp->link_config.orig_duplex;
                phydev->autoneg = tp->link_config.orig_autoneg;
                phydev->advertising = tp->link_config.orig_advertising;
        }

        phy_start(phydev);

        phy_start_aneg(phydev);
}

static void tg3_phy_stop(struct tg3 *tp)
{
        if (!(tp->phy_flags & TG3_PHYFLG_IS_CONNECTED))
                return;

        phy_stop(tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR]);
}

static void tg3_phy_fini(struct tg3 *tp)
{
        if (tp->phy_flags & TG3_PHYFLG_IS_CONNECTED) {
                phy_disconnect(tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR]);
                tp->phy_flags &= ~TG3_PHYFLG_IS_CONNECTED;
        }
}

static int tg3_phy_set_extloopbk(struct tg3 *tp)
{
        int err;
        u32 val;

        if (tp->phy_flags & TG3_PHYFLG_IS_FET)
                return 0;

        if ((tp->phy_id & TG3_PHY_ID_MASK) == TG3_PHY_ID_BCM5401) {
                /* Cannot do read-modify-write on 5401 */
                err = tg3_phy_auxctl_write(tp,
                                           MII_TG3_AUXCTL_SHDWSEL_AUXCTL,
                                           MII_TG3_AUXCTL_ACTL_EXTLOOPBK |
                                           0x4c20);
                goto done;
        }

        err = tg3_phy_auxctl_read(tp,
                                  MII_TG3_AUXCTL_SHDWSEL_AUXCTL, &val);
        if (err)
                return err;

        val |= MII_TG3_AUXCTL_ACTL_EXTLOOPBK;
        err = tg3_phy_auxctl_write(tp,
                                   MII_TG3_AUXCTL_SHDWSEL_AUXCTL, val);

done:
        return err;
}

static void tg3_phy_fet_toggle_apd(struct tg3 *tp, bool enable)
{
        u32 phytest;

        if (!tg3_readphy(tp, MII_TG3_FET_TEST, &phytest)) {
                u32 phy;

                tg3_writephy(tp, MII_TG3_FET_TEST,
                             phytest | MII_TG3_FET_SHADOW_EN);
                if (!tg3_readphy(tp, MII_TG3_FET_SHDW_AUXSTAT2, &phy)) {
                        if (enable)
                                phy |= MII_TG3_FET_SHDW_AUXSTAT2_APD;
                        else
                                phy &= ~MII_TG3_FET_SHDW_AUXSTAT2_APD;
                        tg3_writephy(tp, MII_TG3_FET_SHDW_AUXSTAT2, phy);
                }
                tg3_writephy(tp, MII_TG3_FET_TEST, phytest);
        }
}

static void tg3_phy_toggle_apd(struct tg3 *tp, bool enable)
{
        u32 reg;

        if (!tg3_flag(tp, 5705_PLUS) ||
            (tg3_flag(tp, 5717_PLUS) &&
             (tp->phy_flags & TG3_PHYFLG_MII_SERDES)))
                return;

        if (tp->phy_flags & TG3_PHYFLG_IS_FET) {
                tg3_phy_fet_toggle_apd(tp, enable);
                return;
        }

        reg = MII_TG3_MISC_SHDW_WREN |
              MII_TG3_MISC_SHDW_SCR5_SEL |
              MII_TG3_MISC_SHDW_SCR5_LPED |
              MII_TG3_MISC_SHDW_SCR5_DLPTLM |
              MII_TG3_MISC_SHDW_SCR5_SDTL |
              MII_TG3_MISC_SHDW_SCR5_C125OE;
        if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5784 || !enable)
                reg |= MII_TG3_MISC_SHDW_SCR5_DLLAPD;

        tg3_writephy(tp, MII_TG3_MISC_SHDW, reg);


        reg = MII_TG3_MISC_SHDW_WREN |
              MII_TG3_MISC_SHDW_APD_SEL |
              MII_TG3_MISC_SHDW_APD_WKTM_84MS;
        if (enable)
                reg |= MII_TG3_MISC_SHDW_APD_ENABLE;

        tg3_writephy(tp, MII_TG3_MISC_SHDW, reg);
}

static void tg3_phy_toggle_automdix(struct tg3 *tp, int enable)
{
        u32 phy;

        if (!tg3_flag(tp, 5705_PLUS) ||
            (tp->phy_flags & TG3_PHYFLG_ANY_SERDES))
                return;

        if (tp->phy_flags & TG3_PHYFLG_IS_FET) {
                u32 ephy;

                if (!tg3_readphy(tp, MII_TG3_FET_TEST, &ephy)) {
                        u32 reg = MII_TG3_FET_SHDW_MISCCTRL;

                        tg3_writephy(tp, MII_TG3_FET_TEST,
                                     ephy | MII_TG3_FET_SHADOW_EN);
                        if (!tg3_readphy(tp, reg, &phy)) {
                                if (enable)
                                        phy |= MII_TG3_FET_SHDW_MISCCTRL_MDIX;
                                else
                                        phy &= ~MII_TG3_FET_SHDW_MISCCTRL_MDIX;
                                tg3_writephy(tp, reg, phy);
                        }
                        tg3_writephy(tp, MII_TG3_FET_TEST, ephy);
                }
        } else {
                int ret;

                ret = tg3_phy_auxctl_read(tp,
                                          MII_TG3_AUXCTL_SHDWSEL_MISC, &phy);
                if (!ret) {
                        if (enable)
                                phy |= MII_TG3_AUXCTL_MISC_FORCE_AMDIX;
                        else
                                phy &= ~MII_TG3_AUXCTL_MISC_FORCE_AMDIX;
                        tg3_phy_auxctl_write(tp,
                                             MII_TG3_AUXCTL_SHDWSEL_MISC, phy);
                }
        }
}

static void tg3_phy_set_wirespeed(struct tg3 *tp)
{
        int ret;
        u32 val;

        if (tp->phy_flags & TG3_PHYFLG_NO_ETH_WIRE_SPEED)
                return;

        ret = tg3_phy_auxctl_read(tp, MII_TG3_AUXCTL_SHDWSEL_MISC, &val);
        if (!ret)
                tg3_phy_auxctl_write(tp, MII_TG3_AUXCTL_SHDWSEL_MISC,
                                     val | MII_TG3_AUXCTL_MISC_WIRESPD_EN);
}

static void tg3_phy_apply_otp(struct tg3 *tp)
{
        u32 otp, phy;

        if (!tp->phy_otp)
                return;

        otp = tp->phy_otp;

        if (TG3_PHY_AUXCTL_SMDSP_ENABLE(tp))
                return;

        phy = ((otp & TG3_OTP_AGCTGT_MASK) >> TG3_OTP_AGCTGT_SHIFT);
        phy |= MII_TG3_DSP_TAP1_AGCTGT_DFLT;
        tg3_phydsp_write(tp, MII_TG3_DSP_TAP1, phy);

        phy = ((otp & TG3_OTP_HPFFLTR_MASK) >> TG3_OTP_HPFFLTR_SHIFT) |
              ((otp & TG3_OTP_HPFOVER_MASK) >> TG3_OTP_HPFOVER_SHIFT);
        tg3_phydsp_write(tp, MII_TG3_DSP_AADJ1CH0, phy);

        phy = ((otp & TG3_OTP_LPFDIS_MASK) >> TG3_OTP_LPFDIS_SHIFT);
        phy |= MII_TG3_DSP_AADJ1CH3_ADCCKADJ;
        tg3_phydsp_write(tp, MII_TG3_DSP_AADJ1CH3, phy);

        phy = ((otp & TG3_OTP_VDAC_MASK) >> TG3_OTP_VDAC_SHIFT);
        tg3_phydsp_write(tp, MII_TG3_DSP_EXP75, phy);

        phy = ((otp & TG3_OTP_10BTAMP_MASK) >> TG3_OTP_10BTAMP_SHIFT);
        tg3_phydsp_write(tp, MII_TG3_DSP_EXP96, phy);

        phy = ((otp & TG3_OTP_ROFF_MASK) >> TG3_OTP_ROFF_SHIFT) |
              ((otp & TG3_OTP_RCOFF_MASK) >> TG3_OTP_RCOFF_SHIFT);
        tg3_phydsp_write(tp, MII_TG3_DSP_EXP97, phy);

        TG3_PHY_AUXCTL_SMDSP_DISABLE(tp);
}

static void tg3_phy_eee_adjust(struct tg3 *tp, u32 current_link_up)
{
        u32 val;

        if (!(tp->phy_flags & TG3_PHYFLG_EEE_CAP))
                return;

        tp->setlpicnt = 0;

        if (tp->link_config.autoneg == AUTONEG_ENABLE &&
            current_link_up == 1 &&
            tp->link_config.active_duplex == DUPLEX_FULL &&
            (tp->link_config.active_speed == SPEED_100 ||
             tp->link_config.active_speed == SPEED_1000)) {
                u32 eeectl;

                if (tp->link_config.active_speed == SPEED_1000)
                        eeectl = TG3_CPMU_EEE_CTRL_EXIT_16_5_US;
                else
                        eeectl = TG3_CPMU_EEE_CTRL_EXIT_36_US;

                tw32(TG3_CPMU_EEE_CTRL, eeectl);

                tg3_phy_cl45_read(tp, MDIO_MMD_AN,
                                  TG3_CL45_D7_EEERES_STAT, &val);

                if (val == TG3_CL45_D7_EEERES_STAT_LP_1000T ||
                    val == TG3_CL45_D7_EEERES_STAT_LP_100TX)
                        tp->setlpicnt = 2;
        }

        if (!tp->setlpicnt) {
                if (current_link_up == 1 &&
                   !TG3_PHY_AUXCTL_SMDSP_ENABLE(tp)) {
                        tg3_phydsp_write(tp, MII_TG3_DSP_TAP26, 0x0000);
                        TG3_PHY_AUXCTL_SMDSP_DISABLE(tp);
                }

                val = tr32(TG3_CPMU_EEE_MODE);
                tw32(TG3_CPMU_EEE_MODE, val & ~TG3_CPMU_EEEMD_LPI_ENABLE);
        }
}

static void tg3_phy_eee_enable(struct tg3 *tp)
{
        u32 val;

        if (tp->link_config.active_speed == SPEED_1000 &&
            (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
             GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
             GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765) &&
            !TG3_PHY_AUXCTL_SMDSP_ENABLE(tp)) {
                val = MII_TG3_DSP_TAP26_ALNOKO |
                      MII_TG3_DSP_TAP26_RMRXSTO;
                tg3_phydsp_write(tp, MII_TG3_DSP_TAP26, val);
                TG3_PHY_AUXCTL_SMDSP_DISABLE(tp);
        }

        val = tr32(TG3_CPMU_EEE_MODE);
        tw32(TG3_CPMU_EEE_MODE, val | TG3_CPMU_EEEMD_LPI_ENABLE);
}

static int tg3_wait_macro_done(struct tg3 *tp)
{
        int limit = 100;

        while (limit--) {
                u32 tmp32;

                if (!tg3_readphy(tp, MII_TG3_DSP_CONTROL, &tmp32)) {
                        if ((tmp32 & 0x1000) == 0)
                                break;
                }
        }
        if (limit < 0)
                return -EBUSY;

        return 0;
}

static int tg3_phy_write_and_check_testpat(struct tg3 *tp, int *resetp)
{
        static const u32 test_pat[4][6] = {
        { 0x00005555, 0x00000005, 0x00002aaa, 0x0000000a, 0x00003456, 0x00000003 },
        { 0x00002aaa, 0x0000000a, 0x00003333, 0x00000003, 0x0000789a, 0x00000005 },
        { 0x00005a5a, 0x00000005, 0x00002a6a, 0x0000000a, 0x00001bcd, 0x00000003 },
        { 0x00002a5a, 0x0000000a, 0x000033c3, 0x00000003, 0x00002ef1, 0x00000005 }
        };
        int chan;

        for (chan = 0; chan < 4; chan++) {
                int i;

                tg3_writephy(tp, MII_TG3_DSP_ADDRESS,
                             (chan * 0x2000) | 0x0200);
                tg3_writephy(tp, MII_TG3_DSP_CONTROL, 0x0002);

                for (i = 0; i < 6; i++)
                        tg3_writephy(tp, MII_TG3_DSP_RW_PORT,
                                     test_pat[chan][i]);

                tg3_writephy(tp, MII_TG3_DSP_CONTROL, 0x0202);
                if (tg3_wait_macro_done(tp)) {
                        *resetp = 1;
                        return -EBUSY;
                }

                tg3_writephy(tp, MII_TG3_DSP_ADDRESS,
                             (chan * 0x2000) | 0x0200);
                tg3_writephy(tp, MII_TG3_DSP_CONTROL, 0x0082);
                if (tg3_wait_macro_done(tp)) {
                        *resetp = 1;
                        return -EBUSY;
                }

                tg3_writephy(tp, MII_TG3_DSP_CONTROL, 0x0802);
                if (tg3_wait_macro_done(tp)) {
                        *resetp = 1;
                        return -EBUSY;
                }

                for (i = 0; i < 6; i += 2) {
                        u32 low, high;

                        if (tg3_readphy(tp, MII_TG3_DSP_RW_PORT, &low) ||
                            tg3_readphy(tp, MII_TG3_DSP_RW_PORT, &high) ||
                            tg3_wait_macro_done(tp)) {
                                *resetp = 1;
                                return -EBUSY;
                        }
                        low &= 0x7fff;
                        high &= 0x000f;
                        if (low != test_pat[chan][i] ||
                            high != test_pat[chan][i+1]) {
                                tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x000b);
                                tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x4001);
                                tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x4005);

                                return -EBUSY;
                        }
                }
        }

        return 0;
}

static int tg3_phy_reset_chanpat(struct tg3 *tp)
{
        int chan;

        for (chan = 0; chan < 4; chan++) {
                int i;

                tg3_writephy(tp, MII_TG3_DSP_ADDRESS,
                             (chan * 0x2000) | 0x0200);
                tg3_writephy(tp, MII_TG3_DSP_CONTROL, 0x0002);
                for (i = 0; i < 6; i++)
                        tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x000);
                tg3_writephy(tp, MII_TG3_DSP_CONTROL, 0x0202);
                if (tg3_wait_macro_done(tp))
                        return -EBUSY;
        }

        return 0;
}

static int tg3_phy_reset_5703_4_5(struct tg3 *tp)
{
        u32 reg32, phy9_orig;
        int retries, do_phy_reset, err;

        retries = 10;
        do_phy_reset = 1;
        do {
                if (do_phy_reset) {
                        err = tg3_bmcr_reset(tp);
                        if (err)
                                return err;
                        do_phy_reset = 0;
                }

                /* Disable transmitter and interrupt.  */
                if (tg3_readphy(tp, MII_TG3_EXT_CTRL, &reg32))
                        continue;

                reg32 |= 0x3000;
                tg3_writephy(tp, MII_TG3_EXT_CTRL, reg32);

                /* Set full-duplex, 1000 mbps.  */
                tg3_writephy(tp, MII_BMCR,
                             BMCR_FULLDPLX | BMCR_SPEED1000);

                /* Set to master mode.  */
                if (tg3_readphy(tp, MII_CTRL1000, &phy9_orig))
                        continue;

                tg3_writephy(tp, MII_CTRL1000,
                             CTL1000_AS_MASTER | CTL1000_ENABLE_MASTER);

                err = TG3_PHY_AUXCTL_SMDSP_ENABLE(tp);
                if (err)
                        return err;

                /* Block the PHY control access.  */
                tg3_phydsp_write(tp, 0x8005, 0x0800);

                err = tg3_phy_write_and_check_testpat(tp, &do_phy_reset);
                if (!err)
                        break;
        } while (--retries);

        err = tg3_phy_reset_chanpat(tp);
        if (err)
                return err;

        tg3_phydsp_write(tp, 0x8005, 0x0000);

        tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x8200);
        tg3_writephy(tp, MII_TG3_DSP_CONTROL, 0x0000);

        TG3_PHY_AUXCTL_SMDSP_DISABLE(tp);

        tg3_writephy(tp, MII_CTRL1000, phy9_orig);

        if (!tg3_readphy(tp, MII_TG3_EXT_CTRL, &reg32)) {
                reg32 &= ~0x3000;
                tg3_writephy(tp, MII_TG3_EXT_CTRL, reg32);
        } else if (!err)
                err = -EBUSY;

        return err;
}

/* This will reset the tigon3 PHY if there is no valid
 * link unless the FORCE argument is non-zero.
 */
static int tg3_phy_reset(struct tg3 *tp)
{
        u32 val, cpmuctrl;
        int err;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                val = tr32(GRC_MISC_CFG);
                tw32_f(GRC_MISC_CFG, val & ~GRC_MISC_CFG_EPHY_IDDQ);
                udelay(40);
        }
        err  = tg3_readphy(tp, MII_BMSR, &val);
        err |= tg3_readphy(tp, MII_BMSR, &val);
        if (err != 0)
                return -EBUSY;

        if (netif_running(tp->dev) && netif_carrier_ok(tp->dev)) {
                netif_carrier_off(tp->dev);
                tg3_link_report(tp);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) {
                err = tg3_phy_reset_5703_4_5(tp);
                if (err)
                        return err;
                goto out;
        }

        cpmuctrl = 0;
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 &&
            GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5784_AX) {
                cpmuctrl = tr32(TG3_CPMU_CTRL);
                if (cpmuctrl & CPMU_CTRL_GPHY_10MB_RXONLY)
                        tw32(TG3_CPMU_CTRL,
                             cpmuctrl & ~CPMU_CTRL_GPHY_10MB_RXONLY);
        }

        err = tg3_bmcr_reset(tp);
        if (err)
                return err;

        if (cpmuctrl & CPMU_CTRL_GPHY_10MB_RXONLY) {
                val = MII_TG3_DSP_EXP8_AEDW | MII_TG3_DSP_EXP8_REJ2MHz;
                tg3_phydsp_write(tp, MII_TG3_DSP_EXP8, val);

                tw32(TG3_CPMU_CTRL, cpmuctrl);
        }

        if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5784_AX ||
            GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5761_AX) {
                val = tr32(TG3_CPMU_LSPD_1000MB_CLK);
                if ((val & CPMU_LSPD_1000MB_MACCLK_MASK) ==
                    CPMU_LSPD_1000MB_MACCLK_12_5) {
                        val &= ~CPMU_LSPD_1000MB_MACCLK_MASK;
                        udelay(40);
                        tw32_f(TG3_CPMU_LSPD_1000MB_CLK, val);
                }
        }

        if (tg3_flag(tp, 5717_PLUS) &&
            (tp->phy_flags & TG3_PHYFLG_MII_SERDES))
                return 0;

        tg3_phy_apply_otp(tp);

        if (tp->phy_flags & TG3_PHYFLG_ENABLE_APD)
                tg3_phy_toggle_apd(tp, true);
        else
                tg3_phy_toggle_apd(tp, false);

out:
        if ((tp->phy_flags & TG3_PHYFLG_ADC_BUG) &&
            !TG3_PHY_AUXCTL_SMDSP_ENABLE(tp)) {
                tg3_phydsp_write(tp, 0x201f, 0x2aaa);
                tg3_phydsp_write(tp, 0x000a, 0x0323);
                TG3_PHY_AUXCTL_SMDSP_DISABLE(tp);
        }

        if (tp->phy_flags & TG3_PHYFLG_5704_A0_BUG) {
                tg3_writephy(tp, MII_TG3_MISC_SHDW, 0x8d68);
                tg3_writephy(tp, MII_TG3_MISC_SHDW, 0x8d68);
        }

        if (tp->phy_flags & TG3_PHYFLG_BER_BUG) {
                if (!TG3_PHY_AUXCTL_SMDSP_ENABLE(tp)) {
                        tg3_phydsp_write(tp, 0x000a, 0x310b);
                        tg3_phydsp_write(tp, 0x201f, 0x9506);
                        tg3_phydsp_write(tp, 0x401f, 0x14e2);
                        TG3_PHY_AUXCTL_SMDSP_DISABLE(tp);
                }
        } else if (tp->phy_flags & TG3_PHYFLG_JITTER_BUG) {
                if (!TG3_PHY_AUXCTL_SMDSP_ENABLE(tp)) {
                        tg3_writephy(tp, MII_TG3_DSP_ADDRESS, 0x000a);
                        if (tp->phy_flags & TG3_PHYFLG_ADJUST_TRIM) {
                                tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x110b);
                                tg3_writephy(tp, MII_TG3_TEST1,
                                             MII_TG3_TEST1_TRIM_EN | 0x4);
                        } else
                                tg3_writephy(tp, MII_TG3_DSP_RW_PORT, 0x010b);

                        TG3_PHY_AUXCTL_SMDSP_DISABLE(tp);
                }
        }

        /* Set Extended packet length bit (bit 14) on all chips that */
        /* support jumbo frames */
        if ((tp->phy_id & TG3_PHY_ID_MASK) == TG3_PHY_ID_BCM5401) {
                /* Cannot do read-modify-write on 5401 */
                tg3_phy_auxctl_write(tp, MII_TG3_AUXCTL_SHDWSEL_AUXCTL, 0x4c20);
        } else if (tg3_flag(tp, JUMBO_CAPABLE)) {
                /* Set bit 14 with read-modify-write to preserve other bits */
                err = tg3_phy_auxctl_read(tp,
                                          MII_TG3_AUXCTL_SHDWSEL_AUXCTL, &val);
                if (!err)
                        tg3_phy_auxctl_write(tp, MII_TG3_AUXCTL_SHDWSEL_AUXCTL,
                                           val | MII_TG3_AUXCTL_ACTL_EXTPKTLEN);
        }

        /* Set phy register 0x10 bit 0 to high fifo elasticity to support
         * jumbo frames transmission.
         */
        if (tg3_flag(tp, JUMBO_CAPABLE)) {
                if (!tg3_readphy(tp, MII_TG3_EXT_CTRL, &val))
                        tg3_writephy(tp, MII_TG3_EXT_CTRL,
                                     val | MII_TG3_EXT_CTRL_FIFO_ELASTIC);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                /* adjust output voltage */
                tg3_writephy(tp, MII_TG3_FET_PTEST, 0x12);
        }

        tg3_phy_toggle_automdix(tp, 1);
        tg3_phy_set_wirespeed(tp);
        return 0;
}

#define TG3_GPIO_MSG_DRVR_PRES           0x00000001
#define TG3_GPIO_MSG_NEED_VAUX           0x00000002
#define TG3_GPIO_MSG_MASK                (TG3_GPIO_MSG_DRVR_PRES | \
                                          TG3_GPIO_MSG_NEED_VAUX)
#define TG3_GPIO_MSG_ALL_DRVR_PRES_MASK \
        ((TG3_GPIO_MSG_DRVR_PRES << 0) | \
         (TG3_GPIO_MSG_DRVR_PRES << 4) | \
         (TG3_GPIO_MSG_DRVR_PRES << 8) | \
         (TG3_GPIO_MSG_DRVR_PRES << 12))

#define TG3_GPIO_MSG_ALL_NEED_VAUX_MASK \
        ((TG3_GPIO_MSG_NEED_VAUX << 0) | \
         (TG3_GPIO_MSG_NEED_VAUX << 4) | \
         (TG3_GPIO_MSG_NEED_VAUX << 8) | \
         (TG3_GPIO_MSG_NEED_VAUX << 12))

static inline u32 tg3_set_function_status(struct tg3 *tp, u32 newstat)
{
        u32 status, shift;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
                status = tg3_ape_read32(tp, TG3_APE_GPIO_MSG);
        else
                status = tr32(TG3_CPMU_DRV_STATUS);

        shift = TG3_APE_GPIO_MSG_SHIFT + 4 * tp->pci_fn;
        status &= ~(TG3_GPIO_MSG_MASK << shift);
        status |= (newstat << shift);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
                tg3_ape_write32(tp, TG3_APE_GPIO_MSG, status);
        else
                tw32(TG3_CPMU_DRV_STATUS, status);

        return status >> TG3_APE_GPIO_MSG_SHIFT;
}

static inline int tg3_pwrsrc_switch_to_vmain(struct tg3 *tp)
{
        if (!tg3_flag(tp, IS_NIC))
                return 0;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) {
                if (tg3_ape_lock(tp, TG3_APE_LOCK_GPIO))
                        return -EIO;

                tg3_set_function_status(tp, TG3_GPIO_MSG_DRVR_PRES);

                tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl,
                            TG3_GRC_LCLCTL_PWRSW_DELAY);

                tg3_ape_unlock(tp, TG3_APE_LOCK_GPIO);
        } else {
                tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl,
                            TG3_GRC_LCLCTL_PWRSW_DELAY);
        }

        return 0;
}

static void tg3_pwrsrc_die_with_vmain(struct tg3 *tp)
{
        u32 grc_local_ctrl;

        if (!tg3_flag(tp, IS_NIC) ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701)
                return;

        grc_local_ctrl = tp->grc_local_ctrl | GRC_LCLCTRL_GPIO_OE1;

        tw32_wait_f(GRC_LOCAL_CTRL,
                    grc_local_ctrl | GRC_LCLCTRL_GPIO_OUTPUT1,
                    TG3_GRC_LCLCTL_PWRSW_DELAY);

        tw32_wait_f(GRC_LOCAL_CTRL,
                    grc_local_ctrl,
                    TG3_GRC_LCLCTL_PWRSW_DELAY);

        tw32_wait_f(GRC_LOCAL_CTRL,
                    grc_local_ctrl | GRC_LCLCTRL_GPIO_OUTPUT1,
                    TG3_GRC_LCLCTL_PWRSW_DELAY);
}

static void tg3_pwrsrc_switch_to_vaux(struct tg3 *tp)
{
        if (!tg3_flag(tp, IS_NIC))
                return;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701) {
                tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl |
                            (GRC_LCLCTRL_GPIO_OE0 |
                             GRC_LCLCTRL_GPIO_OE1 |
                             GRC_LCLCTRL_GPIO_OE2 |
                             GRC_LCLCTRL_GPIO_OUTPUT0 |
                             GRC_LCLCTRL_GPIO_OUTPUT1),
                            TG3_GRC_LCLCTL_PWRSW_DELAY);
        } else if (tp->pdev->device == PCI_DEVICE_ID_TIGON3_5761 ||
                   tp->pdev->device == TG3PCI_DEVICE_TIGON3_5761S) {
                /* The 5761 non-e device swaps GPIO 0 and GPIO 2. */
                u32 grc_local_ctrl = GRC_LCLCTRL_GPIO_OE0 |
                                     GRC_LCLCTRL_GPIO_OE1 |
                                     GRC_LCLCTRL_GPIO_OE2 |
                                     GRC_LCLCTRL_GPIO_OUTPUT0 |
                                     GRC_LCLCTRL_GPIO_OUTPUT1 |
                                     tp->grc_local_ctrl;
                tw32_wait_f(GRC_LOCAL_CTRL, grc_local_ctrl,
                            TG3_GRC_LCLCTL_PWRSW_DELAY);

                grc_local_ctrl |= GRC_LCLCTRL_GPIO_OUTPUT2;
                tw32_wait_f(GRC_LOCAL_CTRL, grc_local_ctrl,
                            TG3_GRC_LCLCTL_PWRSW_DELAY);

                grc_local_ctrl &= ~GRC_LCLCTRL_GPIO_OUTPUT0;
                tw32_wait_f(GRC_LOCAL_CTRL, grc_local_ctrl,
                            TG3_GRC_LCLCTL_PWRSW_DELAY);
        } else {
                u32 no_gpio2;
                u32 grc_local_ctrl = 0;

                /* Workaround to prevent overdrawing Amps. */
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714) {
                        grc_local_ctrl |= GRC_LCLCTRL_GPIO_OE3;
                        tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl |
                                    grc_local_ctrl,
                                    TG3_GRC_LCLCTL_PWRSW_DELAY);
                }

                /* On 5753 and variants, GPIO2 cannot be used. */
                no_gpio2 = tp->nic_sram_data_cfg &
                           NIC_SRAM_DATA_CFG_NO_GPIO2;

                grc_local_ctrl |= GRC_LCLCTRL_GPIO_OE0 |
                                  GRC_LCLCTRL_GPIO_OE1 |
                                  GRC_LCLCTRL_GPIO_OE2 |
                                  GRC_LCLCTRL_GPIO_OUTPUT1 |
                                  GRC_LCLCTRL_GPIO_OUTPUT2;
                if (no_gpio2) {
                        grc_local_ctrl &= ~(GRC_LCLCTRL_GPIO_OE2 |
                                            GRC_LCLCTRL_GPIO_OUTPUT2);
                }
                tw32_wait_f(GRC_LOCAL_CTRL,
                            tp->grc_local_ctrl | grc_local_ctrl,
                            TG3_GRC_LCLCTL_PWRSW_DELAY);

                grc_local_ctrl |= GRC_LCLCTRL_GPIO_OUTPUT0;

                tw32_wait_f(GRC_LOCAL_CTRL,
                            tp->grc_local_ctrl | grc_local_ctrl,
                            TG3_GRC_LCLCTL_PWRSW_DELAY);

                if (!no_gpio2) {
                        grc_local_ctrl &= ~GRC_LCLCTRL_GPIO_OUTPUT2;
                        tw32_wait_f(GRC_LOCAL_CTRL,
                                    tp->grc_local_ctrl | grc_local_ctrl,
                                    TG3_GRC_LCLCTL_PWRSW_DELAY);
                }
        }
}

static void tg3_frob_aux_power_5717(struct tg3 *tp, bool wol_enable)
{
        u32 msg = 0;

        /* Serialize power state transitions */
        if (tg3_ape_lock(tp, TG3_APE_LOCK_GPIO))
                return;

        if (tg3_flag(tp, ENABLE_ASF) || tg3_flag(tp, ENABLE_APE) || wol_enable)
                msg = TG3_GPIO_MSG_NEED_VAUX;

        msg = tg3_set_function_status(tp, msg);

        if (msg & TG3_GPIO_MSG_ALL_DRVR_PRES_MASK)
                goto done;

        if (msg & TG3_GPIO_MSG_ALL_NEED_VAUX_MASK)
                tg3_pwrsrc_switch_to_vaux(tp);
        else
                tg3_pwrsrc_die_with_vmain(tp);

done:
        tg3_ape_unlock(tp, TG3_APE_LOCK_GPIO);
}

static void tg3_frob_aux_power(struct tg3 *tp, bool include_wol)
{
        bool need_vaux = false;

        /* The GPIOs do something completely different on 57765. */
        if (!tg3_flag(tp, IS_NIC) ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765)
                return;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) {
                tg3_frob_aux_power_5717(tp, include_wol ?
                                        tg3_flag(tp, WOL_ENABLE) != 0 : 0);
                return;
        }

        if (tp->pdev_peer && tp->pdev_peer != tp->pdev) {
                struct net_device *dev_peer;

                dev_peer = pci_get_drvdata(tp->pdev_peer);

                /* remove_one() may have been run on the peer. */
                if (dev_peer) {
                        struct tg3 *tp_peer = netdev_priv(dev_peer);

                        if (tg3_flag(tp_peer, INIT_COMPLETE))
                                return;

                        if ((include_wol && tg3_flag(tp_peer, WOL_ENABLE)) ||
                            tg3_flag(tp_peer, ENABLE_ASF))
                                need_vaux = true;
                }
        }

        if ((include_wol && tg3_flag(tp, WOL_ENABLE)) ||
            tg3_flag(tp, ENABLE_ASF))
                need_vaux = true;

        if (need_vaux)
                tg3_pwrsrc_switch_to_vaux(tp);
        else
                tg3_pwrsrc_die_with_vmain(tp);
}

static int tg3_5700_link_polarity(struct tg3 *tp, u32 speed)
{
        if (tp->led_ctrl == LED_CTRL_MODE_PHY_2)
                return 1;
        else if ((tp->phy_id & TG3_PHY_ID_MASK) == TG3_PHY_ID_BCM5411) {
                if (speed != SPEED_10)
                        return 1;
        } else if (speed == SPEED_10)
                return 1;

        return 0;
}

static int tg3_setup_phy(struct tg3 *, int);
static int tg3_halt_cpu(struct tg3 *, u32);

static void tg3_power_down_phy(struct tg3 *tp, bool do_low_power)
{
        u32 val;

        if (tp->phy_flags & TG3_PHYFLG_PHY_SERDES) {
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704) {
                        u32 sg_dig_ctrl = tr32(SG_DIG_CTRL);
                        u32 serdes_cfg = tr32(MAC_SERDES_CFG);

                        sg_dig_ctrl |=
                                SG_DIG_USING_HW_AUTONEG | SG_DIG_SOFT_RESET;
                        tw32(SG_DIG_CTRL, sg_dig_ctrl);
                        tw32(MAC_SERDES_CFG, serdes_cfg | (1 << 15));
                }
                return;
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                tg3_bmcr_reset(tp);
                val = tr32(GRC_MISC_CFG);
                tw32_f(GRC_MISC_CFG, val | GRC_MISC_CFG_EPHY_IDDQ);
                udelay(40);
                return;
        } else if (tp->phy_flags & TG3_PHYFLG_IS_FET) {
                u32 phytest;
                if (!tg3_readphy(tp, MII_TG3_FET_TEST, &phytest)) {
                        u32 phy;

                        tg3_writephy(tp, MII_ADVERTISE, 0);
                        tg3_writephy(tp, MII_BMCR,
                                     BMCR_ANENABLE | BMCR_ANRESTART);

                        tg3_writephy(tp, MII_TG3_FET_TEST,
                                     phytest | MII_TG3_FET_SHADOW_EN);
                        if (!tg3_readphy(tp, MII_TG3_FET_SHDW_AUXMODE4, &phy)) {
                                phy |= MII_TG3_FET_SHDW_AUXMODE4_SBPD;
                                tg3_writephy(tp,
                                             MII_TG3_FET_SHDW_AUXMODE4,
                                             phy);
                        }
                        tg3_writephy(tp, MII_TG3_FET_TEST, phytest);
                }
                return;
        } else if (do_low_power) {
                tg3_writephy(tp, MII_TG3_EXT_CTRL,
                             MII_TG3_EXT_CTRL_FORCE_LED_OFF);

                val = MII_TG3_AUXCTL_PCTL_100TX_LPWR |
                      MII_TG3_AUXCTL_PCTL_SPR_ISOLATE |
                      MII_TG3_AUXCTL_PCTL_VREG_11V;
                tg3_phy_auxctl_write(tp, MII_TG3_AUXCTL_SHDWSEL_PWRCTL, val);
        }

        /* The PHY should not be powered down on some chips because
         * of bugs.
         */
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 ||
            (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780 &&
             (tp->phy_flags & TG3_PHYFLG_MII_SERDES)))
                return;

        if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5784_AX ||
            GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5761_AX) {
                val = tr32(TG3_CPMU_LSPD_1000MB_CLK);
                val &= ~CPMU_LSPD_1000MB_MACCLK_MASK;
                val |= CPMU_LSPD_1000MB_MACCLK_12_5;
                tw32_f(TG3_CPMU_LSPD_1000MB_CLK, val);
        }

        tg3_writephy(tp, MII_BMCR, BMCR_PDOWN);
}

/* tp->lock is held. */
static int tg3_nvram_lock(struct tg3 *tp)
{
        if (tg3_flag(tp, NVRAM)) {
                int i;

                if (tp->nvram_lock_cnt == 0) {
                        tw32(NVRAM_SWARB, SWARB_REQ_SET1);
                        for (i = 0; i < 8000; i++) {
                                if (tr32(NVRAM_SWARB) & SWARB_GNT1)
                                        break;
                                udelay(20);
                        }
                        if (i == 8000) {
                                tw32(NVRAM_SWARB, SWARB_REQ_CLR1);
                                return -ENODEV;
                        }
                }
                tp->nvram_lock_cnt++;
        }
        return 0;
}

/* tp->lock is held. */
static void tg3_nvram_unlock(struct tg3 *tp)
{
        if (tg3_flag(tp, NVRAM)) {
                if (tp->nvram_lock_cnt > 0)
                        tp->nvram_lock_cnt--;
                if (tp->nvram_lock_cnt == 0)
                        tw32_f(NVRAM_SWARB, SWARB_REQ_CLR1);
        }
}

/* tp->lock is held. */
static void tg3_enable_nvram_access(struct tg3 *tp)
{
        if (tg3_flag(tp, 5750_PLUS) && !tg3_flag(tp, PROTECTED_NVRAM)) {
                u32 nvaccess = tr32(NVRAM_ACCESS);

                tw32(NVRAM_ACCESS, nvaccess | ACCESS_ENABLE);
        }
}

/* tp->lock is held. */
static void tg3_disable_nvram_access(struct tg3 *tp)
{
        if (tg3_flag(tp, 5750_PLUS) && !tg3_flag(tp, PROTECTED_NVRAM)) {
                u32 nvaccess = tr32(NVRAM_ACCESS);

                tw32(NVRAM_ACCESS, nvaccess & ~ACCESS_ENABLE);
        }
}

static int tg3_nvram_read_using_eeprom(struct tg3 *tp,
                                        u32 offset, u32 *val)
{
        u32 tmp;
        int i;

        if (offset > EEPROM_ADDR_ADDR_MASK || (offset % 4) != 0)
                return -EINVAL;

        tmp = tr32(GRC_EEPROM_ADDR) & ~(EEPROM_ADDR_ADDR_MASK |
                                        EEPROM_ADDR_DEVID_MASK |
                                        EEPROM_ADDR_READ);
        tw32(GRC_EEPROM_ADDR,
             tmp |
             (0 << EEPROM_ADDR_DEVID_SHIFT) |
             ((offset << EEPROM_ADDR_ADDR_SHIFT) &
              EEPROM_ADDR_ADDR_MASK) |
             EEPROM_ADDR_READ | EEPROM_ADDR_START);

        for (i = 0; i < 1000; i++) {
                tmp = tr32(GRC_EEPROM_ADDR);

                if (tmp & EEPROM_ADDR_COMPLETE)
                        break;
                msleep(1);
        }
        if (!(tmp & EEPROM_ADDR_COMPLETE))
                return -EBUSY;

        tmp = tr32(GRC_EEPROM_DATA);

        /*
         * The data will always be opposite the native endian
         * format.  Perform a blind byteswap to compensate.
         */
        *val = swab32(tmp);

        return 0;
}

#define NVRAM_CMD_TIMEOUT 10000

static int tg3_nvram_exec_cmd(struct tg3 *tp, u32 nvram_cmd)
{
        int i;

        tw32(NVRAM_CMD, nvram_cmd);
        for (i = 0; i < NVRAM_CMD_TIMEOUT; i++) {
                udelay(10);
                if (tr32(NVRAM_CMD) & NVRAM_CMD_DONE) {
                        udelay(10);
                        break;
                }
        }

        if (i == NVRAM_CMD_TIMEOUT)
                return -EBUSY;

        return 0;
}

static u32 tg3_nvram_phys_addr(struct tg3 *tp, u32 addr)
{
        if (tg3_flag(tp, NVRAM) &&
            tg3_flag(tp, NVRAM_BUFFERED) &&
            tg3_flag(tp, FLASH) &&
            !tg3_flag(tp, NO_NVRAM_ADDR_TRANS) &&
            (tp->nvram_jedecnum == JEDEC_ATMEL))

                addr = ((addr / tp->nvram_pagesize) <<
                        ATMEL_AT45DB0X1B_PAGE_POS) +
                       (addr % tp->nvram_pagesize);

        return addr;
}

static u32 tg3_nvram_logical_addr(struct tg3 *tp, u32 addr)
{
        if (tg3_flag(tp, NVRAM) &&
            tg3_flag(tp, NVRAM_BUFFERED) &&
            tg3_flag(tp, FLASH) &&
            !tg3_flag(tp, NO_NVRAM_ADDR_TRANS) &&
            (tp->nvram_jedecnum == JEDEC_ATMEL))

                addr = ((addr >> ATMEL_AT45DB0X1B_PAGE_POS) *
                        tp->nvram_pagesize) +
                       (addr & ((1 << ATMEL_AT45DB0X1B_PAGE_POS) - 1));

        return addr;
}

/* NOTE: Data read in from NVRAM is byteswapped according to
 * the byteswapping settings for all other register accesses.
 * tg3 devices are BE devices, so on a BE machine, the data
 * returned will be exactly as it is seen in NVRAM.  On a LE
 * machine, the 32-bit value will be byteswapped.
 */
static int tg3_nvram_read(struct tg3 *tp, u32 offset, u32 *val)
{
        int ret;

        if (!tg3_flag(tp, NVRAM))
                return tg3_nvram_read_using_eeprom(tp, offset, val);

        offset = tg3_nvram_phys_addr(tp, offset);

        if (offset > NVRAM_ADDR_MSK)
                return -EINVAL;

        ret = tg3_nvram_lock(tp);
        if (ret)
                return ret;

        tg3_enable_nvram_access(tp);

        tw32(NVRAM_ADDR, offset);
        ret = tg3_nvram_exec_cmd(tp, NVRAM_CMD_RD | NVRAM_CMD_GO |
                NVRAM_CMD_FIRST | NVRAM_CMD_LAST | NVRAM_CMD_DONE);

        if (ret == 0)
                *val = tr32(NVRAM_RDDATA);

        tg3_disable_nvram_access(tp);

        tg3_nvram_unlock(tp);

        return ret;
}

/* Ensures NVRAM data is in bytestream format. */
static int tg3_nvram_read_be32(struct tg3 *tp, u32 offset, __be32 *val)
{
        u32 v;
        int res = tg3_nvram_read(tp, offset, &v);
        if (!res)
                *val = cpu_to_be32(v);
        return res;
}

#define RX_CPU_SCRATCH_BASE     0x30000
#define RX_CPU_SCRATCH_SIZE     0x04000
#define TX_CPU_SCRATCH_BASE     0x34000
#define TX_CPU_SCRATCH_SIZE     0x04000

/* tp->lock is held. */
static int tg3_halt_cpu(struct tg3 *tp, u32 offset)
{
        int i;

        BUG_ON(offset == TX_CPU_BASE && tg3_flag(tp, 5705_PLUS));

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                u32 val = tr32(GRC_VCPU_EXT_CTRL);

                tw32(GRC_VCPU_EXT_CTRL, val | GRC_VCPU_EXT_CTRL_HALT_CPU);
                return 0;
        }
        if (offset == RX_CPU_BASE) {
                for (i = 0; i < 10000; i++) {
                        tw32(offset + CPU_STATE, 0xffffffff);
                        tw32(offset + CPU_MODE,  CPU_MODE_HALT);
                        if (tr32(offset + CPU_MODE) & CPU_MODE_HALT)
                                break;
                }

                tw32(offset + CPU_STATE, 0xffffffff);
                tw32_f(offset + CPU_MODE,  CPU_MODE_HALT);
                udelay(10);
        } else {
                for (i = 0; i < 10000; i++) {
                        tw32(offset + CPU_STATE, 0xffffffff);
                        tw32(offset + CPU_MODE,  CPU_MODE_HALT);
                        if (tr32(offset + CPU_MODE) & CPU_MODE_HALT)
                                break;
                }
        }

        if (i >= 10000) {
                netdev_err(tp->dev, "%s timed out, %s CPU\n",
                           __func__, offset == RX_CPU_BASE ? "RX" : "TX");
                return -ENODEV;
        }

        /* Clear firmware's nvram arbitration. */
        if (tg3_flag(tp, NVRAM))
                tw32(NVRAM_SWARB, SWARB_REQ_CLR0);
        return 0;
}

struct fw_info {
        unsigned int fw_base;
        unsigned int fw_len;
        const __be32 *fw_data;
};

/* tp->lock is held. */
static int tg3_load_firmware_cpu(struct tg3 *tp, u32 cpu_base,
                                 u32 cpu_scratch_base, int cpu_scratch_size,
                                 struct fw_info *info)
{
        int err, lock_err, i;
        void (*write_op)(struct tg3 *, u32, u32);

        if (cpu_base == TX_CPU_BASE && tg3_flag(tp, 5705_PLUS)) {
                netdev_err(tp->dev,
                           "%s: Trying to load TX cpu firmware which is 5705\n",
                           __func__);
                return -EINVAL;
        }

        if (tg3_flag(tp, 5705_PLUS))
                write_op = tg3_write_mem;
        else
                write_op = tg3_write_indirect_reg32;

        /* It is possible that bootcode is still loading at this point.
         * Get the nvram lock first before halting the cpu.
         */
        lock_err = tg3_nvram_lock(tp);
        err = tg3_halt_cpu(tp, cpu_base);
        if (!lock_err)
                tg3_nvram_unlock(tp);
        if (err)
                goto out;

        for (i = 0; i < cpu_scratch_size; i += sizeof(u32))
                write_op(tp, cpu_scratch_base + i, 0);
        tw32(cpu_base + CPU_STATE, 0xffffffff);
        tw32(cpu_base + CPU_MODE, tr32(cpu_base+CPU_MODE)|CPU_MODE_HALT);
        for (i = 0; i < (info->fw_len / sizeof(u32)); i++)
                write_op(tp, (cpu_scratch_base +
                              (info->fw_base & 0xffff) +
                              (i * sizeof(u32))),
                              be32_to_cpu(info->fw_data[i]));

        err = 0;

out:
        return err;
}

/* tp->lock is held. */
static int tg3_load_5701_a0_firmware_fix(struct tg3 *tp)
{
        struct fw_info info;
        const __be32 *fw_data;
        int err, i;

        fw_data = (void *)tp->fw->data;

        /* Firmware blob starts with version numbers, followed by
           start address and length. We are setting complete length.
           length = end_address_of_bss - start_address_of_text.
           Remainder is the blob to be loaded contiguously
           from start address. */

        info.fw_base = be32_to_cpu(fw_data[1]);
        info.fw_len = tp->fw->size - 12;
        info.fw_data = &fw_data[3];

        err = tg3_load_firmware_cpu(tp, RX_CPU_BASE,
                                    RX_CPU_SCRATCH_BASE, RX_CPU_SCRATCH_SIZE,
                                    &info);
        if (err)
                return err;

        err = tg3_load_firmware_cpu(tp, TX_CPU_BASE,
                                    TX_CPU_SCRATCH_BASE, TX_CPU_SCRATCH_SIZE,
                                    &info);
        if (err)
                return err;

        /* Now startup only the RX cpu. */
        tw32(RX_CPU_BASE + CPU_STATE, 0xffffffff);
        tw32_f(RX_CPU_BASE + CPU_PC, info.fw_base);

        for (i = 0; i < 5; i++) {
                if (tr32(RX_CPU_BASE + CPU_PC) == info.fw_base)
                        break;
                tw32(RX_CPU_BASE + CPU_STATE, 0xffffffff);
                tw32(RX_CPU_BASE + CPU_MODE,  CPU_MODE_HALT);
                tw32_f(RX_CPU_BASE + CPU_PC, info.fw_base);
                udelay(1000);
        }
        if (i >= 5) {
                netdev_err(tp->dev, "%s fails to set RX CPU PC, is %08x "
                           "should be %08x\n", __func__,
                           tr32(RX_CPU_BASE + CPU_PC), info.fw_base);
                return -ENODEV;
        }
        tw32(RX_CPU_BASE + CPU_STATE, 0xffffffff);
        tw32_f(RX_CPU_BASE + CPU_MODE,  0x00000000);

        return 0;
}

/* tp->lock is held. */
static int tg3_load_tso_firmware(struct tg3 *tp)
{
        struct fw_info info;
        const __be32 *fw_data;
        unsigned long cpu_base, cpu_scratch_base, cpu_scratch_size;
        int err, i;

        if (tg3_flag(tp, HW_TSO_1) ||
            tg3_flag(tp, HW_TSO_2) ||
            tg3_flag(tp, HW_TSO_3))
                return 0;

        fw_data = (void *)tp->fw->data;

        /* Firmware blob starts with version numbers, followed by
           start address and length. We are setting complete length.
           length = end_address_of_bss - start_address_of_text.
           Remainder is the blob to be loaded contiguously
           from start address. */

        info.fw_base = be32_to_cpu(fw_data[1]);
        cpu_scratch_size = tp->fw_len;
        info.fw_len = tp->fw->size - 12;
        info.fw_data = &fw_data[3];

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) {
                cpu_base = RX_CPU_BASE;
                cpu_scratch_base = NIC_SRAM_MBUF_POOL_BASE5705;
        } else {
                cpu_base = TX_CPU_BASE;
                cpu_scratch_base = TX_CPU_SCRATCH_BASE;
                cpu_scratch_size = TX_CPU_SCRATCH_SIZE;
        }

        err = tg3_load_firmware_cpu(tp, cpu_base,
                                    cpu_scratch_base, cpu_scratch_size,
                                    &info);
        if (err)
                return err;

        /* Now startup the cpu. */
        tw32(cpu_base + CPU_STATE, 0xffffffff);
        tw32_f(cpu_base + CPU_PC, info.fw_base);

        for (i = 0; i < 5; i++) {
                if (tr32(cpu_base + CPU_PC) == info.fw_base)
                        break;
                tw32(cpu_base + CPU_STATE, 0xffffffff);
                tw32(cpu_base + CPU_MODE,  CPU_MODE_HALT);
                tw32_f(cpu_base + CPU_PC, info.fw_base);
                udelay(1000);
        }
        if (i >= 5) {
                netdev_err(tp->dev,
                           "%s fails to set CPU PC, is %08x should be %08x\n",
                           __func__, tr32(cpu_base + CPU_PC), info.fw_base);
                return -ENODEV;
        }
        tw32(cpu_base + CPU_STATE, 0xffffffff);
        tw32_f(cpu_base + CPU_MODE,  0x00000000);
        return 0;
}


/* tp->lock is held. */
static void __tg3_set_mac_addr(struct tg3 *tp, int skip_mac_1)
{
        u32 addr_high, addr_low;
        int i;

        addr_high = ((tp->dev->dev_addr[0] << 8) |
                     tp->dev->dev_addr[1]);
        addr_low = ((tp->dev->dev_addr[2] << 24) |
                    (tp->dev->dev_addr[3] << 16) |
                    (tp->dev->dev_addr[4] <<  8) |
                    (tp->dev->dev_addr[5] <<  0));
        for (i = 0; i < 4; i++) {
                if (i == 1 && skip_mac_1)
                        continue;
                tw32(MAC_ADDR_0_HIGH + (i * 8), addr_high);
                tw32(MAC_ADDR_0_LOW + (i * 8), addr_low);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704) {
                for (i = 0; i < 12; i++) {
                        tw32(MAC_EXTADDR_0_HIGH + (i * 8), addr_high);
                        tw32(MAC_EXTADDR_0_LOW + (i * 8), addr_low);
                }
        }

        addr_high = (tp->dev->dev_addr[0] +
                     tp->dev->dev_addr[1] +
                     tp->dev->dev_addr[2] +
                     tp->dev->dev_addr[3] +
                     tp->dev->dev_addr[4] +
                     tp->dev->dev_addr[5]) &
                TX_BACKOFF_SEED_MASK;
        tw32(MAC_TX_BACKOFF_SEED, addr_high);
}

static void tg3_enable_register_access(struct tg3 *tp)
{
        /*
         * Make sure register accesses (indirect or otherwise) will function
         * correctly.
         */
        pci_write_config_dword(tp->pdev,
                               TG3PCI_MISC_HOST_CTRL, tp->misc_host_ctrl);
}

static int tg3_power_up(struct tg3 *tp)
{
        int err;

        tg3_enable_register_access(tp);

        err = pci_set_power_state(tp->pdev, PCI_D0);
        if (!err) {
                /* Switch out of Vaux if it is a NIC */
                tg3_pwrsrc_switch_to_vmain(tp);
        } else {
                netdev_err(tp->dev, "Transition to D0 failed\n");
        }

        return err;
}

static int tg3_power_down_prepare(struct tg3 *tp)
{
        u32 misc_host_ctrl;
        bool device_should_wake, do_low_power;

        tg3_enable_register_access(tp);

        /* Restore the CLKREQ setting. */
        if (tg3_flag(tp, CLKREQ_BUG)) {
                u16 lnkctl;

                pci_read_config_word(tp->pdev,
                                     pci_pcie_cap(tp->pdev) + PCI_EXP_LNKCTL,
                                     &lnkctl);
                lnkctl |= PCI_EXP_LNKCTL_CLKREQ_EN;
                pci_write_config_word(tp->pdev,
                                      pci_pcie_cap(tp->pdev) + PCI_EXP_LNKCTL,
                                      lnkctl);
        }

        misc_host_ctrl = tr32(TG3PCI_MISC_HOST_CTRL);
        tw32(TG3PCI_MISC_HOST_CTRL,
             misc_host_ctrl | MISC_HOST_CTRL_MASK_PCI_INT);

        device_should_wake = device_may_wakeup(&tp->pdev->dev) &&
                             tg3_flag(tp, WOL_ENABLE);

        if (tg3_flag(tp, USE_PHYLIB)) {
                do_low_power = false;
                if ((tp->phy_flags & TG3_PHYFLG_IS_CONNECTED) &&
                    !(tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER)) {
                        struct phy_device *phydev;
                        u32 phyid, advertising;

                        phydev = tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR];

                        tp->phy_flags |= TG3_PHYFLG_IS_LOW_POWER;

                        tp->link_config.orig_speed = phydev->speed;
                        tp->link_config.orig_duplex = phydev->duplex;
                        tp->link_config.orig_autoneg = phydev->autoneg;
                        tp->link_config.orig_advertising = phydev->advertising;

                        advertising = ADVERTISED_TP |
                                      ADVERTISED_Pause |
                                      ADVERTISED_Autoneg |
                                      ADVERTISED_10baseT_Half;

                        if (tg3_flag(tp, ENABLE_ASF) || device_should_wake) {
                                if (tg3_flag(tp, WOL_SPEED_100MB))
                                        advertising |=
                                                ADVERTISED_100baseT_Half |
                                                ADVERTISED_100baseT_Full |
                                                ADVERTISED_10baseT_Full;
                                else
                                        advertising |= ADVERTISED_10baseT_Full;
                        }

                        phydev->advertising = advertising;

                        phy_start_aneg(phydev);

                        phyid = phydev->drv->phy_id & phydev->drv->phy_id_mask;
                        if (phyid != PHY_ID_BCMAC131) {
                                phyid &= PHY_BCM_OUI_MASK;
                                if (phyid == PHY_BCM_OUI_1 ||
                                    phyid == PHY_BCM_OUI_2 ||
                                    phyid == PHY_BCM_OUI_3)
                                        do_low_power = true;
                        }
                }
        } else {
                do_low_power = true;

                if (!(tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER)) {
                        tp->phy_flags |= TG3_PHYFLG_IS_LOW_POWER;
                        tp->link_config.orig_speed = tp->link_config.speed;
                        tp->link_config.orig_duplex = tp->link_config.duplex;
                        tp->link_config.orig_autoneg = tp->link_config.autoneg;
                }

                if (!(tp->phy_flags & TG3_PHYFLG_ANY_SERDES)) {
                        tp->link_config.speed = SPEED_10;
                        tp->link_config.duplex = DUPLEX_HALF;
                        tp->link_config.autoneg = AUTONEG_ENABLE;
                        tg3_setup_phy(tp, 0);
                }
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                u32 val;

                val = tr32(GRC_VCPU_EXT_CTRL);
                tw32(GRC_VCPU_EXT_CTRL, val | GRC_VCPU_EXT_CTRL_DISABLE_WOL);
        } else if (!tg3_flag(tp, ENABLE_ASF)) {
                int i;
                u32 val;

                for (i = 0; i < 200; i++) {
                        tg3_read_mem(tp, NIC_SRAM_FW_ASF_STATUS_MBOX, &val);
                        if (val == ~NIC_SRAM_FIRMWARE_MBOX_MAGIC1)
                                break;
                        msleep(1);
                }
        }
        if (tg3_flag(tp, WOL_CAP))
                tg3_write_mem(tp, NIC_SRAM_WOL_MBOX, WOL_SIGNATURE |
                                                     WOL_DRV_STATE_SHUTDOWN |
                                                     WOL_DRV_WOL |
                                                     WOL_SET_MAGIC_PKT);

        if (device_should_wake) {
                u32 mac_mode;

                if (!(tp->phy_flags & TG3_PHYFLG_PHY_SERDES)) {
                        if (do_low_power &&
                            !(tp->phy_flags & TG3_PHYFLG_IS_FET)) {
                                tg3_phy_auxctl_write(tp,
                                               MII_TG3_AUXCTL_SHDWSEL_PWRCTL,
                                               MII_TG3_AUXCTL_PCTL_WOL_EN |
                                               MII_TG3_AUXCTL_PCTL_100TX_LPWR |
                                               MII_TG3_AUXCTL_PCTL_CL_AB_TXDAC);
                                udelay(40);
                        }

                        if (tp->phy_flags & TG3_PHYFLG_MII_SERDES)
                                mac_mode = MAC_MODE_PORT_MODE_GMII;
                        else
                                mac_mode = MAC_MODE_PORT_MODE_MII;

                        mac_mode |= tp->mac_mode & MAC_MODE_LINK_POLARITY;
                        if (GET_ASIC_REV(tp->pci_chip_rev_id) ==
                            ASIC_REV_5700) {
                                u32 speed = tg3_flag(tp, WOL_SPEED_100MB) ?
                                             SPEED_100 : SPEED_10;
                                if (tg3_5700_link_polarity(tp, speed))
                                        mac_mode |= MAC_MODE_LINK_POLARITY;
                                else
                                        mac_mode &= ~MAC_MODE_LINK_POLARITY;
                        }
                } else {
                        mac_mode = MAC_MODE_PORT_MODE_TBI;
                }

                if (!tg3_flag(tp, 5750_PLUS))
                        tw32(MAC_LED_CTRL, tp->led_ctrl);

                mac_mode |= MAC_MODE_MAGIC_PKT_ENABLE;
                if ((tg3_flag(tp, 5705_PLUS) && !tg3_flag(tp, 5780_CLASS)) &&
                    (tg3_flag(tp, ENABLE_ASF) || tg3_flag(tp, ENABLE_APE)))
                        mac_mode |= MAC_MODE_KEEP_FRAME_IN_WOL;

                if (tg3_flag(tp, ENABLE_APE))
                        mac_mode |= MAC_MODE_APE_TX_EN |
                                    MAC_MODE_APE_RX_EN |
                                    MAC_MODE_TDE_ENABLE;

                tw32_f(MAC_MODE, mac_mode);
                udelay(100);

                tw32_f(MAC_RX_MODE, RX_MODE_ENABLE);
                udelay(10);
        }

        if (!tg3_flag(tp, WOL_SPEED_100MB) &&
            (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
             GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701)) {
                u32 base_val;

                base_val = tp->pci_clock_ctrl;
                base_val |= (CLOCK_CTRL_RXCLK_DISABLE |
                             CLOCK_CTRL_TXCLK_DISABLE);

                tw32_wait_f(TG3PCI_CLOCK_CTRL, base_val | CLOCK_CTRL_ALTCLK |
                            CLOCK_CTRL_PWRDOWN_PLL133, 40);
        } else if (tg3_flag(tp, 5780_CLASS) ||
                   tg3_flag(tp, CPMU_PRESENT) ||
                   GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                /* do nothing */
        } else if (!(tg3_flag(tp, 5750_PLUS) && tg3_flag(tp, ENABLE_ASF))) {
                u32 newbits1, newbits2;

                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701) {
                        newbits1 = (CLOCK_CTRL_RXCLK_DISABLE |
                                    CLOCK_CTRL_TXCLK_DISABLE |
                                    CLOCK_CTRL_ALTCLK);
                        newbits2 = newbits1 | CLOCK_CTRL_44MHZ_CORE;
                } else if (tg3_flag(tp, 5705_PLUS)) {
                        newbits1 = CLOCK_CTRL_625_CORE;
                        newbits2 = newbits1 | CLOCK_CTRL_ALTCLK;
                } else {
                        newbits1 = CLOCK_CTRL_ALTCLK;
                        newbits2 = newbits1 | CLOCK_CTRL_44MHZ_CORE;
                }

                tw32_wait_f(TG3PCI_CLOCK_CTRL, tp->pci_clock_ctrl | newbits1,
                            40);

                tw32_wait_f(TG3PCI_CLOCK_CTRL, tp->pci_clock_ctrl | newbits2,
                            40);

                if (!tg3_flag(tp, 5705_PLUS)) {
                        u32 newbits3;

                        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
                            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701) {
                                newbits3 = (CLOCK_CTRL_RXCLK_DISABLE |
                                            CLOCK_CTRL_TXCLK_DISABLE |
                                            CLOCK_CTRL_44MHZ_CORE);
                        } else {
                                newbits3 = CLOCK_CTRL_44MHZ_CORE;
                        }

                        tw32_wait_f(TG3PCI_CLOCK_CTRL,
                                    tp->pci_clock_ctrl | newbits3, 40);
                }
        }

        if (!(device_should_wake) && !tg3_flag(tp, ENABLE_ASF))
                tg3_power_down_phy(tp, do_low_power);

        tg3_frob_aux_power(tp, true);

        /* Workaround for unstable PLL clock */
        if ((GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_AX) ||
            (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_BX)) {
                u32 val = tr32(0x7d00);

                val &= ~((1 << 16) | (1 << 4) | (1 << 2) | (1 << 1) | 1);
                tw32(0x7d00, val);
                if (!tg3_flag(tp, ENABLE_ASF)) {
                        int err;

                        err = tg3_nvram_lock(tp);
                        tg3_halt_cpu(tp, RX_CPU_BASE);
                        if (!err)
                                tg3_nvram_unlock(tp);
                }
        }

        tg3_write_sig_post_reset(tp, RESET_KIND_SHUTDOWN);

        return 0;
}

static void tg3_power_down(struct tg3 *tp)
{
        tg3_power_down_prepare(tp);

        pci_wake_from_d3(tp->pdev, tg3_flag(tp, WOL_ENABLE));
        pci_set_power_state(tp->pdev, PCI_D3hot);
}

static void tg3_aux_stat_to_speed_duplex(struct tg3 *tp, u32 val, u16 *speed, u8 *duplex)
{
        switch (val & MII_TG3_AUX_STAT_SPDMASK) {
        case MII_TG3_AUX_STAT_10HALF:
                *speed = SPEED_10;
                *duplex = DUPLEX_HALF;
                break;

        case MII_TG3_AUX_STAT_10FULL:
                *speed = SPEED_10;
                *duplex = DUPLEX_FULL;
                break;

        case MII_TG3_AUX_STAT_100HALF:
                *speed = SPEED_100;
                *duplex = DUPLEX_HALF;
                break;

        case MII_TG3_AUX_STAT_100FULL:
                *speed = SPEED_100;
                *duplex = DUPLEX_FULL;
                break;

        case MII_TG3_AUX_STAT_1000HALF:
                *speed = SPEED_1000;
                *duplex = DUPLEX_HALF;
                break;

        case MII_TG3_AUX_STAT_1000FULL:
                *speed = SPEED_1000;
                *duplex = DUPLEX_FULL;
                break;

        default:
                if (tp->phy_flags & TG3_PHYFLG_IS_FET) {
                        *speed = (val & MII_TG3_AUX_STAT_100) ? SPEED_100 :
                                 SPEED_10;
                        *duplex = (val & MII_TG3_AUX_STAT_FULL) ? DUPLEX_FULL :
                                  DUPLEX_HALF;
                        break;
                }
                *speed = SPEED_INVALID;
                *duplex = DUPLEX_INVALID;
                break;
        }
}

static int tg3_phy_autoneg_cfg(struct tg3 *tp, u32 advertise, u32 flowctrl)
{
        int err = 0;
        u32 val, new_adv;

        new_adv = ADVERTISE_CSMA;
        if (advertise & ADVERTISED_10baseT_Half)
                new_adv |= ADVERTISE_10HALF;
        if (advertise & ADVERTISED_10baseT_Full)
                new_adv |= ADVERTISE_10FULL;
        if (advertise & ADVERTISED_100baseT_Half)
                new_adv |= ADVERTISE_100HALF;
        if (advertise & ADVERTISED_100baseT_Full)
                new_adv |= ADVERTISE_100FULL;

        new_adv |= tg3_advert_flowctrl_1000T(flowctrl);

        err = tg3_writephy(tp, MII_ADVERTISE, new_adv);
        if (err)
                goto done;

        if (tp->phy_flags & TG3_PHYFLG_10_100_ONLY)
                goto done;

        new_adv = 0;
        if (advertise & ADVERTISED_1000baseT_Half)
                new_adv |= ADVERTISE_1000HALF;
        if (advertise & ADVERTISED_1000baseT_Full)
                new_adv |= ADVERTISE_1000FULL;

        if (tp->pci_chip_rev_id == CHIPREV_ID_5701_A0 ||
            tp->pci_chip_rev_id == CHIPREV_ID_5701_B0)
                new_adv |= CTL1000_AS_MASTER | CTL1000_ENABLE_MASTER;

        err = tg3_writephy(tp, MII_CTRL1000, new_adv);
        if (err)
                goto done;

        if (!(tp->phy_flags & TG3_PHYFLG_EEE_CAP))
                goto done;

        tw32(TG3_CPMU_EEE_MODE,
             tr32(TG3_CPMU_EEE_MODE) & ~TG3_CPMU_EEEMD_LPI_ENABLE);

        err = TG3_PHY_AUXCTL_SMDSP_ENABLE(tp);
        if (!err) {
                u32 err2;

                val = 0;
                /* Advertise 100-BaseTX EEE ability */
                if (advertise & ADVERTISED_100baseT_Full)
                        val |= MDIO_AN_EEE_ADV_100TX;
                /* Advertise 1000-BaseT EEE ability */
                if (advertise & ADVERTISED_1000baseT_Full)
                        val |= MDIO_AN_EEE_ADV_1000T;
                err = tg3_phy_cl45_write(tp, MDIO_MMD_AN, MDIO_AN_EEE_ADV, val);
                if (err)
                        val = 0;

                switch (GET_ASIC_REV(tp->pci_chip_rev_id)) {
                case ASIC_REV_5717:
                case ASIC_REV_57765:
                case ASIC_REV_5719:
                        /* If we advertised any eee advertisements above... */
                        if (val)
                                val = MII_TG3_DSP_TAP26_ALNOKO |
                                      MII_TG3_DSP_TAP26_RMRXSTO |
                                      MII_TG3_DSP_TAP26_OPCSINPT;
                        tg3_phydsp_write(tp, MII_TG3_DSP_TAP26, val);
                        /* Fall through */
                case ASIC_REV_5720:
                        if (!tg3_phydsp_read(tp, MII_TG3_DSP_CH34TP2, &val))
                                tg3_phydsp_write(tp, MII_TG3_DSP_CH34TP2, val |
                                                 MII_TG3_DSP_CH34TP2_HIBW01);
                }

                err2 = TG3_PHY_AUXCTL_SMDSP_DISABLE(tp);
                if (!err)
                        err = err2;
        }

done:
        return err;
}

static void tg3_phy_copper_begin(struct tg3 *tp)
{
        u32 new_adv;
        int i;

        if (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER) {
                new_adv = ADVERTISED_10baseT_Half |
                          ADVERTISED_10baseT_Full;
                if (tg3_flag(tp, WOL_SPEED_100MB))
                        new_adv |= ADVERTISED_100baseT_Half |
                                   ADVERTISED_100baseT_Full;

                tg3_phy_autoneg_cfg(tp, new_adv,
                                    FLOW_CTRL_TX | FLOW_CTRL_RX);
        } else if (tp->link_config.speed == SPEED_INVALID) {
                if (tp->phy_flags & TG3_PHYFLG_10_100_ONLY)
                        tp->link_config.advertising &=
                                ~(ADVERTISED_1000baseT_Half |
                                  ADVERTISED_1000baseT_Full);

                tg3_phy_autoneg_cfg(tp, tp->link_config.advertising,
                                    tp->link_config.flowctrl);
        } else {
                /* Asking for a specific link mode. */
                if (tp->link_config.speed == SPEED_1000) {
                        if (tp->link_config.duplex == DUPLEX_FULL)
                                new_adv = ADVERTISED_1000baseT_Full;
                        else
                                new_adv = ADVERTISED_1000baseT_Half;
                } else if (tp->link_config.speed == SPEED_100) {
                        if (tp->link_config.duplex == DUPLEX_FULL)
                                new_adv = ADVERTISED_100baseT_Full;
                        else
                                new_adv = ADVERTISED_100baseT_Half;
                } else {
                        if (tp->link_config.duplex == DUPLEX_FULL)
                                new_adv = ADVERTISED_10baseT_Full;
                        else
                                new_adv = ADVERTISED_10baseT_Half;
                }

                tg3_phy_autoneg_cfg(tp, new_adv,
                                    tp->link_config.flowctrl);
        }

        if (tp->link_config.autoneg == AUTONEG_DISABLE &&
            tp->link_config.speed != SPEED_INVALID) {
                u32 bmcr, orig_bmcr;

                tp->link_config.active_speed = tp->link_config.speed;
                tp->link_config.active_duplex = tp->link_config.duplex;

                bmcr = 0;
                switch (tp->link_config.speed) {
                default:
                case SPEED_10:
                        break;

                case SPEED_100:
                        bmcr |= BMCR_SPEED100;
                        break;

                case SPEED_1000:
                        bmcr |= BMCR_SPEED1000;
                        break;
                }

                if (tp->link_config.duplex == DUPLEX_FULL)
                        bmcr |= BMCR_FULLDPLX;

                if (!tg3_readphy(tp, MII_BMCR, &orig_bmcr) &&
                    (bmcr != orig_bmcr)) {
                        tg3_writephy(tp, MII_BMCR, BMCR_LOOPBACK);
                        for (i = 0; i < 1500; i++) {
                                u32 tmp;

                                udelay(10);
                                if (tg3_readphy(tp, MII_BMSR, &tmp) ||
                                    tg3_readphy(tp, MII_BMSR, &tmp))
                                        continue;
                                if (!(tmp & BMSR_LSTATUS)) {
                                        udelay(40);
                                        break;
                                }
                        }
                        tg3_writephy(tp, MII_BMCR, bmcr);
                        udelay(40);
                }
        } else {
                tg3_writephy(tp, MII_BMCR,
                             BMCR_ANENABLE | BMCR_ANRESTART);
        }
}

static int tg3_init_5401phy_dsp(struct tg3 *tp)
{
        int err;

        /* Turn off tap power management. */
        /* Set Extended packet length bit */
        err = tg3_phy_auxctl_write(tp, MII_TG3_AUXCTL_SHDWSEL_AUXCTL, 0x4c20);

        err |= tg3_phydsp_write(tp, 0x0012, 0x1804);
        err |= tg3_phydsp_write(tp, 0x0013, 0x1204);
        err |= tg3_phydsp_write(tp, 0x8006, 0x0132);
        err |= tg3_phydsp_write(tp, 0x8006, 0x0232);
        err |= tg3_phydsp_write(tp, 0x201f, 0x0a20);

        udelay(40);

        return err;
}

static int tg3_copper_is_advertising_all(struct tg3 *tp, u32 mask)
{
        u32 adv_reg, all_mask = 0;

        if (mask & ADVERTISED_10baseT_Half)
                all_mask |= ADVERTISE_10HALF;
        if (mask & ADVERTISED_10baseT_Full)
                all_mask |= ADVERTISE_10FULL;
        if (mask & ADVERTISED_100baseT_Half)
                all_mask |= ADVERTISE_100HALF;
        if (mask & ADVERTISED_100baseT_Full)
                all_mask |= ADVERTISE_100FULL;

        if (tg3_readphy(tp, MII_ADVERTISE, &adv_reg))
                return 0;

        if ((adv_reg & ADVERTISE_ALL) != all_mask)
                return 0;

        if (!(tp->phy_flags & TG3_PHYFLG_10_100_ONLY)) {
                u32 tg3_ctrl;

                all_mask = 0;
                if (mask & ADVERTISED_1000baseT_Half)
                        all_mask |= ADVERTISE_1000HALF;
                if (mask & ADVERTISED_1000baseT_Full)
                        all_mask |= ADVERTISE_1000FULL;

                if (tg3_readphy(tp, MII_CTRL1000, &tg3_ctrl))
                        return 0;

                tg3_ctrl &= (ADVERTISE_1000HALF | ADVERTISE_1000FULL);
                if (tg3_ctrl != all_mask)
                        return 0;
        }

        return 1;
}

static int tg3_adv_1000T_flowctrl_ok(struct tg3 *tp, u32 *lcladv, u32 *rmtadv)
{
        u32 curadv, reqadv;

        if (tg3_readphy(tp, MII_ADVERTISE, lcladv))
                return 1;

        curadv = *lcladv & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
        reqadv = tg3_advert_flowctrl_1000T(tp->link_config.flowctrl);

        if (tp->link_config.active_duplex == DUPLEX_FULL) {
                if (curadv != reqadv)
                        return 0;

                if (tg3_flag(tp, PAUSE_AUTONEG))
                        tg3_readphy(tp, MII_LPA, rmtadv);
        } else {
                /* Reprogram the advertisement register, even if it
                 * does not affect the current link.  If the link
                 * gets renegotiated in the future, we can save an
                 * additional renegotiation cycle by advertising
                 * it correctly in the first place.
                 */
                if (curadv != reqadv) {
                        *lcladv &= ~(ADVERTISE_PAUSE_CAP |
                                     ADVERTISE_PAUSE_ASYM);
                        tg3_writephy(tp, MII_ADVERTISE, *lcladv | reqadv);
                }
        }

        return 1;
}

static int tg3_setup_copper_phy(struct tg3 *tp, int force_reset)
{
        int current_link_up;
        u32 bmsr, val;
        u32 lcl_adv, rmt_adv;
        u16 current_speed;
        u8 current_duplex;
        int i, err;

        tw32(MAC_EVENT, 0);

        tw32_f(MAC_STATUS,
             (MAC_STATUS_SYNC_CHANGED |
              MAC_STATUS_CFG_CHANGED |
              MAC_STATUS_MI_COMPLETION |
              MAC_STATUS_LNKSTATE_CHANGED));
        udelay(40);

        if ((tp->mi_mode & MAC_MI_MODE_AUTO_POLL) != 0) {
                tw32_f(MAC_MI_MODE,
                     (tp->mi_mode & ~MAC_MI_MODE_AUTO_POLL));
                udelay(80);
        }

        tg3_phy_auxctl_write(tp, MII_TG3_AUXCTL_SHDWSEL_PWRCTL, 0);

        /* Some third-party PHYs need to be reset on link going
         * down.
         */
        if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 ||
             GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 ||
             GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) &&
            netif_carrier_ok(tp->dev)) {
                tg3_readphy(tp, MII_BMSR, &bmsr);
                if (!tg3_readphy(tp, MII_BMSR, &bmsr) &&
                    !(bmsr & BMSR_LSTATUS))
                        force_reset = 1;
        }
        if (force_reset)
                tg3_phy_reset(tp);

        if ((tp->phy_id & TG3_PHY_ID_MASK) == TG3_PHY_ID_BCM5401) {
                tg3_readphy(tp, MII_BMSR, &bmsr);
                if (tg3_readphy(tp, MII_BMSR, &bmsr) ||
                    !tg3_flag(tp, INIT_COMPLETE))
                        bmsr = 0;

                if (!(bmsr & BMSR_LSTATUS)) {
                        err = tg3_init_5401phy_dsp(tp);
                        if (err)
                                return err;

                        tg3_readphy(tp, MII_BMSR, &bmsr);
                        for (i = 0; i < 1000; i++) {
                                udelay(10);
                                if (!tg3_readphy(tp, MII_BMSR, &bmsr) &&
                                    (bmsr & BMSR_LSTATUS)) {
                                        udelay(40);
                                        break;
                                }
                        }

                        if ((tp->phy_id & TG3_PHY_ID_REV_MASK) ==
                            TG3_PHY_REV_BCM5401_B0 &&
                            !(bmsr & BMSR_LSTATUS) &&
                            tp->link_config.active_speed == SPEED_1000) {
                                err = tg3_phy_reset(tp);
                                if (!err)
                                        err = tg3_init_5401phy_dsp(tp);
                                if (err)
                                        return err;
                        }
                }
        } else if (tp->pci_chip_rev_id == CHIPREV_ID_5701_A0 ||
                   tp->pci_chip_rev_id == CHIPREV_ID_5701_B0) {
                /* 5701 {A0,B0} CRC bug workaround */
                tg3_writephy(tp, 0x15, 0x0a75);
                tg3_writephy(tp, MII_TG3_MISC_SHDW, 0x8c68);
                tg3_writephy(tp, MII_TG3_MISC_SHDW, 0x8d68);
                tg3_writephy(tp, MII_TG3_MISC_SHDW, 0x8c68);
        }

        /* Clear pending interrupts... */
        tg3_readphy(tp, MII_TG3_ISTAT, &val);
        tg3_readphy(tp, MII_TG3_ISTAT, &val);

        if (tp->phy_flags & TG3_PHYFLG_USE_MI_INTERRUPT)
                tg3_writephy(tp, MII_TG3_IMASK, ~MII_TG3_INT_LINKCHG);
        else if (!(tp->phy_flags & TG3_PHYFLG_IS_FET))
                tg3_writephy(tp, MII_TG3_IMASK, ~0);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701) {
                if (tp->led_ctrl == LED_CTRL_MODE_PHY_1)
                        tg3_writephy(tp, MII_TG3_EXT_CTRL,
                                     MII_TG3_EXT_CTRL_LNK3_LED_MODE);
                else
                        tg3_writephy(tp, MII_TG3_EXT_CTRL, 0);
        }

        current_link_up = 0;
        current_speed = SPEED_INVALID;
        current_duplex = DUPLEX_INVALID;

        if (tp->phy_flags & TG3_PHYFLG_CAPACITIVE_COUPLING) {
                err = tg3_phy_auxctl_read(tp,
                                          MII_TG3_AUXCTL_SHDWSEL_MISCTEST,
                                          &val);
                if (!err && !(val & (1 << 10))) {
                        tg3_phy_auxctl_write(tp,
                                             MII_TG3_AUXCTL_SHDWSEL_MISCTEST,
                                             val | (1 << 10));
                        goto relink;
                }
        }

        bmsr = 0;
        for (i = 0; i < 100; i++) {
                tg3_readphy(tp, MII_BMSR, &bmsr);
                if (!tg3_readphy(tp, MII_BMSR, &bmsr) &&
                    (bmsr & BMSR_LSTATUS))
                        break;
                udelay(40);
        }

        if (bmsr & BMSR_LSTATUS) {
                u32 aux_stat, bmcr;

                tg3_readphy(tp, MII_TG3_AUX_STAT, &aux_stat);
                for (i = 0; i < 2000; i++) {
                        udelay(10);
                        if (!tg3_readphy(tp, MII_TG3_AUX_STAT, &aux_stat) &&
                            aux_stat)
                                break;
                }

                tg3_aux_stat_to_speed_duplex(tp, aux_stat,
                                             &current_speed,
                                             &current_duplex);

                bmcr = 0;
                for (i = 0; i < 200; i++) {
                        tg3_readphy(tp, MII_BMCR, &bmcr);
                        if (tg3_readphy(tp, MII_BMCR, &bmcr))
                                continue;
                        if (bmcr && bmcr != 0x7fff)
                                break;
                        udelay(10);
                }

                lcl_adv = 0;
                rmt_adv = 0;

                tp->link_config.active_speed = current_speed;
                tp->link_config.active_duplex = current_duplex;

                if (tp->link_config.autoneg == AUTONEG_ENABLE) {
                        if ((bmcr & BMCR_ANENABLE) &&
                            tg3_copper_is_advertising_all(tp,
                                                tp->link_config.advertising)) {
                                if (tg3_adv_1000T_flowctrl_ok(tp, &lcl_adv,
                                                                  &rmt_adv))
                                        current_link_up = 1;
                        }
                } else {
                        if (!(bmcr & BMCR_ANENABLE) &&
                            tp->link_config.speed == current_speed &&
                            tp->link_config.duplex == current_duplex &&
                            tp->link_config.flowctrl ==
                            tp->link_config.active_flowctrl) {
                                current_link_up = 1;
                        }
                }

                if (current_link_up == 1 &&
                    tp->link_config.active_duplex == DUPLEX_FULL)
                        tg3_setup_flow_control(tp, lcl_adv, rmt_adv);
        }

relink:
        if (current_link_up == 0 || (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER)) {
                tg3_phy_copper_begin(tp);

                tg3_readphy(tp, MII_BMSR, &bmsr);
                if ((!tg3_readphy(tp, MII_BMSR, &bmsr) && (bmsr & BMSR_LSTATUS)) ||
                    (tp->mac_mode & MAC_MODE_PORT_INT_LPBACK))
                        current_link_up = 1;
        }

        tp->mac_mode &= ~MAC_MODE_PORT_MODE_MASK;
        if (current_link_up == 1) {
                if (tp->link_config.active_speed == SPEED_100 ||
                    tp->link_config.active_speed == SPEED_10)
                        tp->mac_mode |= MAC_MODE_PORT_MODE_MII;
                else
                        tp->mac_mode |= MAC_MODE_PORT_MODE_GMII;
        } else if (tp->phy_flags & TG3_PHYFLG_IS_FET)
                tp->mac_mode |= MAC_MODE_PORT_MODE_MII;
        else
                tp->mac_mode |= MAC_MODE_PORT_MODE_GMII;

        tp->mac_mode &= ~MAC_MODE_HALF_DUPLEX;
        if (tp->link_config.active_duplex == DUPLEX_HALF)
                tp->mac_mode |= MAC_MODE_HALF_DUPLEX;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700) {
                if (current_link_up == 1 &&
                    tg3_5700_link_polarity(tp, tp->link_config.active_speed))
                        tp->mac_mode |= MAC_MODE_LINK_POLARITY;
                else
                        tp->mac_mode &= ~MAC_MODE_LINK_POLARITY;
        }

        /* ??? Without this setting Netgear GA302T PHY does not
         * ??? send/receive packets...
         */
        if ((tp->phy_id & TG3_PHY_ID_MASK) == TG3_PHY_ID_BCM5411 &&
            tp->pci_chip_rev_id == CHIPREV_ID_5700_ALTIMA) {
                tp->mi_mode |= MAC_MI_MODE_AUTO_POLL;
                tw32_f(MAC_MI_MODE, tp->mi_mode);
                udelay(80);
        }

        tw32_f(MAC_MODE, tp->mac_mode);
        udelay(40);

        tg3_phy_eee_adjust(tp, current_link_up);

        if (tg3_flag(tp, USE_LINKCHG_REG)) {
                /* Polled via timer. */
                tw32_f(MAC_EVENT, 0);
        } else {
                tw32_f(MAC_EVENT, MAC_EVENT_LNKSTATE_CHANGED);
        }
        udelay(40);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 &&
            current_link_up == 1 &&
            tp->link_config.active_speed == SPEED_1000 &&
            (tg3_flag(tp, PCIX_MODE) || tg3_flag(tp, PCI_HIGH_SPEED))) {
                udelay(120);
                tw32_f(MAC_STATUS,
                     (MAC_STATUS_SYNC_CHANGED |
                      MAC_STATUS_CFG_CHANGED));
                udelay(40);
                tg3_write_mem(tp,
                              NIC_SRAM_FIRMWARE_MBOX,
                              NIC_SRAM_FIRMWARE_MBOX_MAGIC2);
        }

        /* Prevent send BD corruption. */
        if (tg3_flag(tp, CLKREQ_BUG)) {
                u16 oldlnkctl, newlnkctl;

                pci_read_config_word(tp->pdev,
                                     pci_pcie_cap(tp->pdev) + PCI_EXP_LNKCTL,
                                     &oldlnkctl);
                if (tp->link_config.active_speed == SPEED_100 ||
                    tp->link_config.active_speed == SPEED_10)
                        newlnkctl = oldlnkctl & ~PCI_EXP_LNKCTL_CLKREQ_EN;
                else
                        newlnkctl = oldlnkctl | PCI_EXP_LNKCTL_CLKREQ_EN;
                if (newlnkctl != oldlnkctl)
                        pci_write_config_word(tp->pdev,
                                              pci_pcie_cap(tp->pdev) +
                                              PCI_EXP_LNKCTL, newlnkctl);
        }

        if (current_link_up != netif_carrier_ok(tp->dev)) {
                if (current_link_up)
                        netif_carrier_on(tp->dev);
                else
                        netif_carrier_off(tp->dev);
                tg3_link_report(tp);
        }

        return 0;
}

struct tg3_fiber_aneginfo {
        int state;
#define ANEG_STATE_UNKNOWN              0
#define ANEG_STATE_AN_ENABLE            1
#define ANEG_STATE_RESTART_INIT         2
#define ANEG_STATE_RESTART              3
#define ANEG_STATE_DISABLE_LINK_OK      4
#define ANEG_STATE_ABILITY_DETECT_INIT  5
#define ANEG_STATE_ABILITY_DETECT       6
#define ANEG_STATE_ACK_DETECT_INIT      7
#define ANEG_STATE_ACK_DETECT           8
#define ANEG_STATE_COMPLETE_ACK_INIT    9
#define ANEG_STATE_COMPLETE_ACK         10
#define ANEG_STATE_IDLE_DETECT_INIT     11
#define ANEG_STATE_IDLE_DETECT          12
#define ANEG_STATE_LINK_OK              13
#define ANEG_STATE_NEXT_PAGE_WAIT_INIT  14
#define ANEG_STATE_NEXT_PAGE_WAIT       15

        u32 flags;
#define MR_AN_ENABLE            0x00000001
#define MR_RESTART_AN           0x00000002
#define MR_AN_COMPLETE          0x00000004
#define MR_PAGE_RX              0x00000008
#define MR_NP_LOADED            0x00000010
#define MR_TOGGLE_TX            0x00000020
#define MR_LP_ADV_FULL_DUPLEX   0x00000040
#define MR_LP_ADV_HALF_DUPLEX   0x00000080
#define MR_LP_ADV_SYM_PAUSE     0x00000100
#define MR_LP_ADV_ASYM_PAUSE    0x00000200
#define MR_LP_ADV_REMOTE_FAULT1 0x00000400
#define MR_LP_ADV_REMOTE_FAULT2 0x00000800
#define MR_LP_ADV_NEXT_PAGE     0x00001000
#define MR_TOGGLE_RX            0x00002000
#define MR_NP_RX                0x00004000

#define MR_LINK_OK              0x80000000

        unsigned long link_time, cur_time;

        u32 ability_match_cfg;
        int ability_match_count;

        char ability_match, idle_match, ack_match;

        u32 txconfig, rxconfig;
#define ANEG_CFG_NP             0x00000080
#define ANEG_CFG_ACK            0x00000040
#define ANEG_CFG_RF2            0x00000020
#define ANEG_CFG_RF1            0x00000010
#define ANEG_CFG_PS2            0x00000001
#define ANEG_CFG_PS1            0x00008000
#define ANEG_CFG_HD             0x00004000
#define ANEG_CFG_FD             0x00002000
#define ANEG_CFG_INVAL          0x00001f06

};
#define ANEG_OK         0
#define ANEG_DONE       1
#define ANEG_TIMER_ENAB 2
#define ANEG_FAILED     -1

#define ANEG_STATE_SETTLE_TIME  10000

static int tg3_fiber_aneg_smachine(struct tg3 *tp,
                                   struct tg3_fiber_aneginfo *ap)
{
        u16 flowctrl;
        unsigned long delta;
        u32 rx_cfg_reg;
        int ret;

        if (ap->state == ANEG_STATE_UNKNOWN) {
                ap->rxconfig = 0;
                ap->link_time = 0;
                ap->cur_time = 0;
                ap->ability_match_cfg = 0;
                ap->ability_match_count = 0;
                ap->ability_match = 0;
                ap->idle_match = 0;
                ap->ack_match = 0;
        }
        ap->cur_time++;

        if (tr32(MAC_STATUS) & MAC_STATUS_RCVD_CFG) {
                rx_cfg_reg = tr32(MAC_RX_AUTO_NEG);

                if (rx_cfg_reg != ap->ability_match_cfg) {
                        ap->ability_match_cfg = rx_cfg_reg;
                        ap->ability_match = 0;
                        ap->ability_match_count = 0;
                } else {
                        if (++ap->ability_match_count > 1) {
                                ap->ability_match = 1;
                                ap->ability_match_cfg = rx_cfg_reg;
                        }
                }
                if (rx_cfg_reg & ANEG_CFG_ACK)
                        ap->ack_match = 1;
                else
                        ap->ack_match = 0;

                ap->idle_match = 0;
        } else {
                ap->idle_match = 1;
                ap->ability_match_cfg = 0;
                ap->ability_match_count = 0;
                ap->ability_match = 0;
                ap->ack_match = 0;

                rx_cfg_reg = 0;
        }

        ap->rxconfig = rx_cfg_reg;
        ret = ANEG_OK;

        switch (ap->state) {
        case ANEG_STATE_UNKNOWN:
                if (ap->flags & (MR_AN_ENABLE | MR_RESTART_AN))
                        ap->state = ANEG_STATE_AN_ENABLE;

                /* fallthru */
        case ANEG_STATE_AN_ENABLE:
                ap->flags &= ~(MR_AN_COMPLETE | MR_PAGE_RX);
                if (ap->flags & MR_AN_ENABLE) {
                        ap->link_time = 0;
                        ap->cur_time = 0;
                        ap->ability_match_cfg = 0;
                        ap->ability_match_count = 0;
                        ap->ability_match = 0;
                        ap->idle_match = 0;
                        ap->ack_match = 0;

                        ap->state = ANEG_STATE_RESTART_INIT;
                } else {
                        ap->state = ANEG_STATE_DISABLE_LINK_OK;
                }
                break;

        case ANEG_STATE_RESTART_INIT:
                ap->link_time = ap->cur_time;
                ap->flags &= ~(MR_NP_LOADED);
                ap->txconfig = 0;
                tw32(MAC_TX_AUTO_NEG, 0);
                tp->mac_mode |= MAC_MODE_SEND_CONFIGS;
                tw32_f(MAC_MODE, tp->mac_mode);
                udelay(40);

                ret = ANEG_TIMER_ENAB;
                ap->state = ANEG_STATE_RESTART;

                /* fallthru */
        case ANEG_STATE_RESTART:
                delta = ap->cur_time - ap->link_time;
                if (delta > ANEG_STATE_SETTLE_TIME)
                        ap->state = ANEG_STATE_ABILITY_DETECT_INIT;
                else
                        ret = ANEG_TIMER_ENAB;
                break;

        case ANEG_STATE_DISABLE_LINK_OK:
                ret = ANEG_DONE;
                break;

        case ANEG_STATE_ABILITY_DETECT_INIT:
                ap->flags &= ~(MR_TOGGLE_TX);
                ap->txconfig = ANEG_CFG_FD;
                flowctrl = tg3_advert_flowctrl_1000X(tp->link_config.flowctrl);
                if (flowctrl & ADVERTISE_1000XPAUSE)
                        ap->txconfig |= ANEG_CFG_PS1;
                if (flowctrl & ADVERTISE_1000XPSE_ASYM)
                        ap->txconfig |= ANEG_CFG_PS2;
                tw32(MAC_TX_AUTO_NEG, ap->txconfig);
                tp->mac_mode |= MAC_MODE_SEND_CONFIGS;
                tw32_f(MAC_MODE, tp->mac_mode);
                udelay(40);

                ap->state = ANEG_STATE_ABILITY_DETECT;
                break;

        case ANEG_STATE_ABILITY_DETECT:
                if (ap->ability_match != 0 && ap->rxconfig != 0)
                        ap->state = ANEG_STATE_ACK_DETECT_INIT;
                break;

        case ANEG_STATE_ACK_DETECT_INIT:
                ap->txconfig |= ANEG_CFG_ACK;
                tw32(MAC_TX_AUTO_NEG, ap->txconfig);
                tp->mac_mode |= MAC_MODE_SEND_CONFIGS;
                tw32_f(MAC_MODE, tp->mac_mode);
                udelay(40);

                ap->state = ANEG_STATE_ACK_DETECT;

                /* fallthru */
        case ANEG_STATE_ACK_DETECT:
                if (ap->ack_match != 0) {
                        if ((ap->rxconfig & ~ANEG_CFG_ACK) ==
                            (ap->ability_match_cfg & ~ANEG_CFG_ACK)) {
                                ap->state = ANEG_STATE_COMPLETE_ACK_INIT;
                        } else {
                                ap->state = ANEG_STATE_AN_ENABLE;
                        }
                } else if (ap->ability_match != 0 &&
                           ap->rxconfig == 0) {
                        ap->state = ANEG_STATE_AN_ENABLE;
                }
                break;

        case ANEG_STATE_COMPLETE_ACK_INIT:
                if (ap->rxconfig & ANEG_CFG_INVAL) {
                        ret = ANEG_FAILED;
                        break;
                }
                ap->flags &= ~(MR_LP_ADV_FULL_DUPLEX |
                               MR_LP_ADV_HALF_DUPLEX |
                               MR_LP_ADV_SYM_PAUSE |
                               MR_LP_ADV_ASYM_PAUSE |
                               MR_LP_ADV_REMOTE_FAULT1 |
                               MR_LP_ADV_REMOTE_FAULT2 |
                               MR_LP_ADV_NEXT_PAGE |
                               MR_TOGGLE_RX |
                               MR_NP_RX);
                if (ap->rxconfig & ANEG_CFG_FD)
                        ap->flags |= MR_LP_ADV_FULL_DUPLEX;
                if (ap->rxconfig & ANEG_CFG_HD)
                        ap->flags |= MR_LP_ADV_HALF_DUPLEX;
                if (ap->rxconfig & ANEG_CFG_PS1)
                        ap->flags |= MR_LP_ADV_SYM_PAUSE;
                if (ap->rxconfig & ANEG_CFG_PS2)
                        ap->flags |= MR_LP_ADV_ASYM_PAUSE;
                if (ap->rxconfig & ANEG_CFG_RF1)
                        ap->flags |= MR_LP_ADV_REMOTE_FAULT1;
                if (ap->rxconfig & ANEG_CFG_RF2)
                        ap->flags |= MR_LP_ADV_REMOTE_FAULT2;
                if (ap->rxconfig & ANEG_CFG_NP)
                        ap->flags |= MR_LP_ADV_NEXT_PAGE;

                ap->link_time = ap->cur_time;

                ap->flags ^= (MR_TOGGLE_TX);
                if (ap->rxconfig & 0x0008)
                        ap->flags |= MR_TOGGLE_RX;
                if (ap->rxconfig & ANEG_CFG_NP)
                        ap->flags |= MR_NP_RX;
                ap->flags |= MR_PAGE_RX;

                ap->state = ANEG_STATE_COMPLETE_ACK;
                ret = ANEG_TIMER_ENAB;
                break;

        case ANEG_STATE_COMPLETE_ACK:
                if (ap->ability_match != 0 &&
                    ap->rxconfig == 0) {
                        ap->state = ANEG_STATE_AN_ENABLE;
                        break;
                }
                delta = ap->cur_time - ap->link_time;
                if (delta > ANEG_STATE_SETTLE_TIME) {
                        if (!(ap->flags & (MR_LP_ADV_NEXT_PAGE))) {
                                ap->state = ANEG_STATE_IDLE_DETECT_INIT;
                        } else {
                                if ((ap->txconfig & ANEG_CFG_NP) == 0 &&
                                    !(ap->flags & MR_NP_RX)) {
                                        ap->state = ANEG_STATE_IDLE_DETECT_INIT;
                                } else {
                                        ret = ANEG_FAILED;
                                }
                        }
                }
                break;

        case ANEG_STATE_IDLE_DETECT_INIT:
                ap->link_time = ap->cur_time;
                tp->mac_mode &= ~MAC_MODE_SEND_CONFIGS;
                tw32_f(MAC_MODE, tp->mac_mode);
                udelay(40);

                ap->state = ANEG_STATE_IDLE_DETECT;
                ret = ANEG_TIMER_ENAB;
                break;

        case ANEG_STATE_IDLE_DETECT:
                if (ap->ability_match != 0 &&
                    ap->rxconfig == 0) {
                        ap->state = ANEG_STATE_AN_ENABLE;
                        break;
                }
                delta = ap->cur_time - ap->link_time;
                if (delta > ANEG_STATE_SETTLE_TIME) {
                        /* XXX another gem from the Broadcom driver :( */
                        ap->state = ANEG_STATE_LINK_OK;
                }
                break;

        case ANEG_STATE_LINK_OK:
                ap->flags |= (MR_AN_COMPLETE | MR_LINK_OK);
                ret = ANEG_DONE;
                break;

        case ANEG_STATE_NEXT_PAGE_WAIT_INIT:
                /* ??? unimplemented */
                break;

        case ANEG_STATE_NEXT_PAGE_WAIT:
                /* ??? unimplemented */
                break;

        default:
                ret = ANEG_FAILED;
                break;
        }

        return ret;
}

static int fiber_autoneg(struct tg3 *tp, u32 *txflags, u32 *rxflags)
{
        int res = 0;
        struct tg3_fiber_aneginfo aninfo;
        int status = ANEG_FAILED;
        unsigned int tick;
        u32 tmp;

        tw32_f(MAC_TX_AUTO_NEG, 0);

        tmp = tp->mac_mode & ~MAC_MODE_PORT_MODE_MASK;
        tw32_f(MAC_MODE, tmp | MAC_MODE_PORT_MODE_GMII);
        udelay(40);

        tw32_f(MAC_MODE, tp->mac_mode | MAC_MODE_SEND_CONFIGS);
        udelay(40);

        memset(&aninfo, 0, sizeof(aninfo));
        aninfo.flags |= MR_AN_ENABLE;
        aninfo.state = ANEG_STATE_UNKNOWN;
        aninfo.cur_time = 0;
        tick = 0;
        while (++tick < 195000) {
                status = tg3_fiber_aneg_smachine(tp, &aninfo);
                if (status == ANEG_DONE || status == ANEG_FAILED)
                        break;

                udelay(1);
        }

        tp->mac_mode &= ~MAC_MODE_SEND_CONFIGS;
        tw32_f(MAC_MODE, tp->mac_mode);
        udelay(40);

        *txflags = aninfo.txconfig;
        *rxflags = aninfo.flags;

        if (status == ANEG_DONE &&
            (aninfo.flags & (MR_AN_COMPLETE | MR_LINK_OK |
                             MR_LP_ADV_FULL_DUPLEX)))
                res = 1;

        return res;
}

static void tg3_init_bcm8002(struct tg3 *tp)
{
        u32 mac_status = tr32(MAC_STATUS);
        int i;

        /* Reset when initting first time or we have a link. */
        if (tg3_flag(tp, INIT_COMPLETE) &&
            !(mac_status & MAC_STATUS_PCS_SYNCED))
                return;

        /* Set PLL lock range. */
        tg3_writephy(tp, 0x16, 0x8007);

        /* SW reset */
        tg3_writephy(tp, MII_BMCR, BMCR_RESET);

        /* Wait for reset to complete. */
        /* XXX schedule_timeout() ... */
        for (i = 0; i < 500; i++)
                udelay(10);

        /* Config mode; select PMA/Ch 1 regs. */
        tg3_writephy(tp, 0x10, 0x8411);

        /* Enable auto-lock and comdet, select txclk for tx. */
        tg3_writephy(tp, 0x11, 0x0a10);

        tg3_writephy(tp, 0x18, 0x00a0);
        tg3_writephy(tp, 0x16, 0x41ff);

        /* Assert and deassert POR. */
        tg3_writephy(tp, 0x13, 0x0400);
        udelay(40);
        tg3_writephy(tp, 0x13, 0x0000);

        tg3_writephy(tp, 0x11, 0x0a50);
        udelay(40);
        tg3_writephy(tp, 0x11, 0x0a10);

        /* Wait for signal to stabilize */
        /* XXX schedule_timeout() ... */
        for (i = 0; i < 15000; i++)
                udelay(10);

        /* Deselect the channel register so we can read the PHYID
         * later.
         */
        tg3_writephy(tp, 0x10, 0x8011);
}

static int tg3_setup_fiber_hw_autoneg(struct tg3 *tp, u32 mac_status)
{
        u16 flowctrl;
        u32 sg_dig_ctrl, sg_dig_status;
        u32 serdes_cfg, expected_sg_dig_ctrl;
        int workaround, port_a;
        int current_link_up;

        serdes_cfg = 0;
        expected_sg_dig_ctrl = 0;
        workaround = 0;
        port_a = 1;
        current_link_up = 0;

        if (tp->pci_chip_rev_id != CHIPREV_ID_5704_A0 &&
            tp->pci_chip_rev_id != CHIPREV_ID_5704_A1) {
                workaround = 1;
                if (tr32(TG3PCI_DUAL_MAC_CTRL) & DUAL_MAC_CTRL_ID)
                        port_a = 0;

                /* preserve bits 0-11,13,14 for signal pre-emphasis */
                /* preserve bits 20-23 for voltage regulator */
                serdes_cfg = tr32(MAC_SERDES_CFG) & 0x00f06fff;
        }

        sg_dig_ctrl = tr32(SG_DIG_CTRL);

        if (tp->link_config.autoneg != AUTONEG_ENABLE) {
                if (sg_dig_ctrl & SG_DIG_USING_HW_AUTONEG) {
                        if (workaround) {
                                u32 val = serdes_cfg;

                                if (port_a)
                                        val |= 0xc010000;
                                else
                                        val |= 0x4010000;
                                tw32_f(MAC_SERDES_CFG, val);
                        }

                        tw32_f(SG_DIG_CTRL, SG_DIG_COMMON_SETUP);
                }
                if (mac_status & MAC_STATUS_PCS_SYNCED) {
                        tg3_setup_flow_control(tp, 0, 0);
                        current_link_up = 1;
                }
                goto out;
        }

        /* Want auto-negotiation.  */
        expected_sg_dig_ctrl = SG_DIG_USING_HW_AUTONEG | SG_DIG_COMMON_SETUP;

        flowctrl = tg3_advert_flowctrl_1000X(tp->link_config.flowctrl);
        if (flowctrl & ADVERTISE_1000XPAUSE)
                expected_sg_dig_ctrl |= SG_DIG_PAUSE_CAP;
        if (flowctrl & ADVERTISE_1000XPSE_ASYM)
                expected_sg_dig_ctrl |= SG_DIG_ASYM_PAUSE;

        if (sg_dig_ctrl != expected_sg_dig_ctrl) {
                if ((tp->phy_flags & TG3_PHYFLG_PARALLEL_DETECT) &&
                    tp->serdes_counter &&
                    ((mac_status & (MAC_STATUS_PCS_SYNCED |
                                    MAC_STATUS_RCVD_CFG)) ==
                     MAC_STATUS_PCS_SYNCED)) {
                        tp->serdes_counter--;
                        current_link_up = 1;
                        goto out;
                }
restart_autoneg:
                if (workaround)
                        tw32_f(MAC_SERDES_CFG, serdes_cfg | 0xc011000);
                tw32_f(SG_DIG_CTRL, expected_sg_dig_ctrl | SG_DIG_SOFT_RESET);
                udelay(5);
                tw32_f(SG_DIG_CTRL, expected_sg_dig_ctrl);

                tp->serdes_counter = SERDES_AN_TIMEOUT_5704S;
                tp->phy_flags &= ~TG3_PHYFLG_PARALLEL_DETECT;
        } else if (mac_status & (MAC_STATUS_PCS_SYNCED |
                                 MAC_STATUS_SIGNAL_DET)) {
                sg_dig_status = tr32(SG_DIG_STATUS);
                mac_status = tr32(MAC_STATUS);

                if ((sg_dig_status & SG_DIG_AUTONEG_COMPLETE) &&
                    (mac_status & MAC_STATUS_PCS_SYNCED)) {
                        u32 local_adv = 0, remote_adv = 0;

                        if (sg_dig_ctrl & SG_DIG_PAUSE_CAP)
                                local_adv |= ADVERTISE_1000XPAUSE;
                        if (sg_dig_ctrl & SG_DIG_ASYM_PAUSE)
                                local_adv |= ADVERTISE_1000XPSE_ASYM;

                        if (sg_dig_status & SG_DIG_PARTNER_PAUSE_CAPABLE)
                                remote_adv |= LPA_1000XPAUSE;
                        if (sg_dig_status & SG_DIG_PARTNER_ASYM_PAUSE)
                                remote_adv |= LPA_1000XPAUSE_ASYM;

                        tg3_setup_flow_control(tp, local_adv, remote_adv);
                        current_link_up = 1;
                        tp->serdes_counter = 0;
                        tp->phy_flags &= ~TG3_PHYFLG_PARALLEL_DETECT;
                } else if (!(sg_dig_status & SG_DIG_AUTONEG_COMPLETE)) {
                        if (tp->serdes_counter)
                                tp->serdes_counter--;
                        else {
                                if (workaround) {
                                        u32 val = serdes_cfg;

                                        if (port_a)
                                                val |= 0xc010000;
                                        else
                                                val |= 0x4010000;

                                        tw32_f(MAC_SERDES_CFG, val);
                                }

                                tw32_f(SG_DIG_CTRL, SG_DIG_COMMON_SETUP);
                                udelay(40);

                                /* Link parallel detection - link is up */
                                /* only if we have PCS_SYNC and not */
                                /* receiving config code words */
                                mac_status = tr32(MAC_STATUS);
                                if ((mac_status & MAC_STATUS_PCS_SYNCED) &&
                                    !(mac_status & MAC_STATUS_RCVD_CFG)) {
                                        tg3_setup_flow_control(tp, 0, 0);
                                        current_link_up = 1;
                                        tp->phy_flags |=
                                                TG3_PHYFLG_PARALLEL_DETECT;
                                        tp->serdes_counter =
                                                SERDES_PARALLEL_DET_TIMEOUT;
                                } else
                                        goto restart_autoneg;
                        }
                }
        } else {
                tp->serdes_counter = SERDES_AN_TIMEOUT_5704S;
                tp->phy_flags &= ~TG3_PHYFLG_PARALLEL_DETECT;
        }

out:
        return current_link_up;
}

static int tg3_setup_fiber_by_hand(struct tg3 *tp, u32 mac_status)
{
        int current_link_up = 0;

        if (!(mac_status & MAC_STATUS_PCS_SYNCED))
                goto out;

        if (tp->link_config.autoneg == AUTONEG_ENABLE) {
                u32 txflags, rxflags;
                int i;

                if (fiber_autoneg(tp, &txflags, &rxflags)) {
                        u32 local_adv = 0, remote_adv = 0;

                        if (txflags & ANEG_CFG_PS1)
                                local_adv |= ADVERTISE_1000XPAUSE;
                        if (txflags & ANEG_CFG_PS2)
                                local_adv |= ADVERTISE_1000XPSE_ASYM;

                        if (rxflags & MR_LP_ADV_SYM_PAUSE)
                                remote_adv |= LPA_1000XPAUSE;
                        if (rxflags & MR_LP_ADV_ASYM_PAUSE)
                                remote_adv |= LPA_1000XPAUSE_ASYM;

                        tg3_setup_flow_control(tp, local_adv, remote_adv);

                        current_link_up = 1;
                }
                for (i = 0; i < 30; i++) {
                        udelay(20);
                        tw32_f(MAC_STATUS,
                               (MAC_STATUS_SYNC_CHANGED |
                                MAC_STATUS_CFG_CHANGED));
                        udelay(40);
                        if ((tr32(MAC_STATUS) &
                             (MAC_STATUS_SYNC_CHANGED |
                              MAC_STATUS_CFG_CHANGED)) == 0)
                                break;
                }

                mac_status = tr32(MAC_STATUS);
                if (current_link_up == 0 &&
                    (mac_status & MAC_STATUS_PCS_SYNCED) &&
                    !(mac_status & MAC_STATUS_RCVD_CFG))
                        current_link_up = 1;
        } else {
                tg3_setup_flow_control(tp, 0, 0);

                /* Forcing 1000FD link up. */
                current_link_up = 1;

                tw32_f(MAC_MODE, (tp->mac_mode | MAC_MODE_SEND_CONFIGS));
                udelay(40);

                tw32_f(MAC_MODE, tp->mac_mode);
                udelay(40);
        }

out:
        return current_link_up;
}

static int tg3_setup_fiber_phy(struct tg3 *tp, int force_reset)
{
        u32 orig_pause_cfg;
        u16 orig_active_speed;
        u8 orig_active_duplex;
        u32 mac_status;
        int current_link_up;
        int i;

        orig_pause_cfg = tp->link_config.active_flowctrl;
        orig_active_speed = tp->link_config.active_speed;
        orig_active_duplex = tp->link_config.active_duplex;

        if (!tg3_flag(tp, HW_AUTONEG) &&
            netif_carrier_ok(tp->dev) &&
            tg3_flag(tp, INIT_COMPLETE)) {
                mac_status = tr32(MAC_STATUS);
                mac_status &= (MAC_STATUS_PCS_SYNCED |
                               MAC_STATUS_SIGNAL_DET |
                               MAC_STATUS_CFG_CHANGED |
                               MAC_STATUS_RCVD_CFG);
                if (mac_status == (MAC_STATUS_PCS_SYNCED |
                                   MAC_STATUS_SIGNAL_DET)) {
                        tw32_f(MAC_STATUS, (MAC_STATUS_SYNC_CHANGED |
                                            MAC_STATUS_CFG_CHANGED));
                        return 0;
                }
        }

        tw32_f(MAC_TX_AUTO_NEG, 0);

        tp->mac_mode &= ~(MAC_MODE_PORT_MODE_MASK | MAC_MODE_HALF_DUPLEX);
        tp->mac_mode |= MAC_MODE_PORT_MODE_TBI;
        tw32_f(MAC_MODE, tp->mac_mode);
        udelay(40);

        if (tp->phy_id == TG3_PHY_ID_BCM8002)
                tg3_init_bcm8002(tp);

        /* Enable link change event even when serdes polling.  */
        tw32_f(MAC_EVENT, MAC_EVENT_LNKSTATE_CHANGED);
        udelay(40);

        current_link_up = 0;
        mac_status = tr32(MAC_STATUS);

        if (tg3_flag(tp, HW_AUTONEG))
                current_link_up = tg3_setup_fiber_hw_autoneg(tp, mac_status);
        else
                current_link_up = tg3_setup_fiber_by_hand(tp, mac_status);

        tp->napi[0].hw_status->status =
                (SD_STATUS_UPDATED |
                 (tp->napi[0].hw_status->status & ~SD_STATUS_LINK_CHG));

        for (i = 0; i < 100; i++) {
                tw32_f(MAC_STATUS, (MAC_STATUS_SYNC_CHANGED |
                                    MAC_STATUS_CFG_CHANGED));
                udelay(5);
                if ((tr32(MAC_STATUS) & (MAC_STATUS_SYNC_CHANGED |
                                         MAC_STATUS_CFG_CHANGED |
                                         MAC_STATUS_LNKSTATE_CHANGED)) == 0)
                        break;
        }

        mac_status = tr32(MAC_STATUS);
        if ((mac_status & MAC_STATUS_PCS_SYNCED) == 0) {
                current_link_up = 0;
                if (tp->link_config.autoneg == AUTONEG_ENABLE &&
                    tp->serdes_counter == 0) {
                        tw32_f(MAC_MODE, (tp->mac_mode |
                                          MAC_MODE_SEND_CONFIGS));
                        udelay(1);
                        tw32_f(MAC_MODE, tp->mac_mode);
                }
        }

        if (current_link_up == 1) {
                tp->link_config.active_speed = SPEED_1000;
                tp->link_config.active_duplex = DUPLEX_FULL;
                tw32(MAC_LED_CTRL, (tp->led_ctrl |
                                    LED_CTRL_LNKLED_OVERRIDE |
                                    LED_CTRL_1000MBPS_ON));
        } else {
                tp->link_config.active_speed = SPEED_INVALID;
                tp->link_config.active_duplex = DUPLEX_INVALID;
                tw32(MAC_LED_CTRL, (tp->led_ctrl |
                                    LED_CTRL_LNKLED_OVERRIDE |
                                    LED_CTRL_TRAFFIC_OVERRIDE));
        }

        if (current_link_up != netif_carrier_ok(tp->dev)) {
                if (current_link_up)
                        netif_carrier_on(tp->dev);
                else
                        netif_carrier_off(tp->dev);
                tg3_link_report(tp);
        } else {
                u32 now_pause_cfg = tp->link_config.active_flowctrl;
                if (orig_pause_cfg != now_pause_cfg ||
                    orig_active_speed != tp->link_config.active_speed ||
                    orig_active_duplex != tp->link_config.active_duplex)
                        tg3_link_report(tp);
        }

        return 0;
}

static int tg3_setup_fiber_mii_phy(struct tg3 *tp, int force_reset)
{
        int current_link_up, err = 0;
        u32 bmsr, bmcr;
        u16 current_speed;
        u8 current_duplex;
        u32 local_adv, remote_adv;

        tp->mac_mode |= MAC_MODE_PORT_MODE_GMII;
        tw32_f(MAC_MODE, tp->mac_mode);
        udelay(40);

        tw32(MAC_EVENT, 0);

        tw32_f(MAC_STATUS,
             (MAC_STATUS_SYNC_CHANGED |
              MAC_STATUS_CFG_CHANGED |
              MAC_STATUS_MI_COMPLETION |
              MAC_STATUS_LNKSTATE_CHANGED));
        udelay(40);

        if (force_reset)
                tg3_phy_reset(tp);

        current_link_up = 0;
        current_speed = SPEED_INVALID;
        current_duplex = DUPLEX_INVALID;

        err |= tg3_readphy(tp, MII_BMSR, &bmsr);
        err |= tg3_readphy(tp, MII_BMSR, &bmsr);
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714) {
                if (tr32(MAC_TX_STATUS) & TX_STATUS_LINK_UP)
                        bmsr |= BMSR_LSTATUS;
                else
                        bmsr &= ~BMSR_LSTATUS;
        }

        err |= tg3_readphy(tp, MII_BMCR, &bmcr);

        if ((tp->link_config.autoneg == AUTONEG_ENABLE) && !force_reset &&
            (tp->phy_flags & TG3_PHYFLG_PARALLEL_DETECT)) {
                /* do nothing, just check for link up at the end */
        } else if (tp->link_config.autoneg == AUTONEG_ENABLE) {
                u32 adv, new_adv;

                err |= tg3_readphy(tp, MII_ADVERTISE, &adv);
                new_adv = adv & ~(ADVERTISE_1000XFULL | ADVERTISE_1000XHALF |
                                  ADVERTISE_1000XPAUSE |
                                  ADVERTISE_1000XPSE_ASYM |
                                  ADVERTISE_SLCT);

                new_adv |= tg3_advert_flowctrl_1000X(tp->link_config.flowctrl);

                if (tp->link_config.advertising & ADVERTISED_1000baseT_Half)
                        new_adv |= ADVERTISE_1000XHALF;
                if (tp->link_config.advertising & ADVERTISED_1000baseT_Full)
                        new_adv |= ADVERTISE_1000XFULL;

                if ((new_adv != adv) || !(bmcr & BMCR_ANENABLE)) {
                        tg3_writephy(tp, MII_ADVERTISE, new_adv);
                        bmcr |= BMCR_ANENABLE | BMCR_ANRESTART;
                        tg3_writephy(tp, MII_BMCR, bmcr);

                        tw32_f(MAC_EVENT, MAC_EVENT_LNKSTATE_CHANGED);
                        tp->serdes_counter = SERDES_AN_TIMEOUT_5714S;
                        tp->phy_flags &= ~TG3_PHYFLG_PARALLEL_DETECT;

                        return err;
                }
        } else {
                u32 new_bmcr;

                bmcr &= ~BMCR_SPEED1000;
                new_bmcr = bmcr & ~(BMCR_ANENABLE | BMCR_FULLDPLX);

                if (tp->link_config.duplex == DUPLEX_FULL)
                        new_bmcr |= BMCR_FULLDPLX;

                if (new_bmcr != bmcr) {
                        /* BMCR_SPEED1000 is a reserved bit that needs
                         * to be set on write.
                         */
                        new_bmcr |= BMCR_SPEED1000;

                        /* Force a linkdown */
                        if (netif_carrier_ok(tp->dev)) {
                                u32 adv;

                                err |= tg3_readphy(tp, MII_ADVERTISE, &adv);
                                adv &= ~(ADVERTISE_1000XFULL |
                                         ADVERTISE_1000XHALF |
                                         ADVERTISE_SLCT);
                                tg3_writephy(tp, MII_ADVERTISE, adv);
                                tg3_writephy(tp, MII_BMCR, bmcr |
                                                           BMCR_ANRESTART |
                                                           BMCR_ANENABLE);
                                udelay(10);
                                netif_carrier_off(tp->dev);
                        }
                        tg3_writephy(tp, MII_BMCR, new_bmcr);
                        bmcr = new_bmcr;
                        err |= tg3_readphy(tp, MII_BMSR, &bmsr);
                        err |= tg3_readphy(tp, MII_BMSR, &bmsr);
                        if (GET_ASIC_REV(tp->pci_chip_rev_id) ==
                            ASIC_REV_5714) {
                                if (tr32(MAC_TX_STATUS) & TX_STATUS_LINK_UP)
                                        bmsr |= BMSR_LSTATUS;
                                else
                                        bmsr &= ~BMSR_LSTATUS;
                        }
                        tp->phy_flags &= ~TG3_PHYFLG_PARALLEL_DETECT;
                }
        }

        if (bmsr & BMSR_LSTATUS) {
                current_speed = SPEED_1000;
                current_link_up = 1;
                if (bmcr & BMCR_FULLDPLX)
                        current_duplex = DUPLEX_FULL;
                else
                        current_duplex = DUPLEX_HALF;

                local_adv = 0;
                remote_adv = 0;

                if (bmcr & BMCR_ANENABLE) {
                        u32 common;

                        err |= tg3_readphy(tp, MII_ADVERTISE, &local_adv);
                        err |= tg3_readphy(tp, MII_LPA, &remote_adv);
                        common = local_adv & remote_adv;
                        if (common & (ADVERTISE_1000XHALF |
                                      ADVERTISE_1000XFULL)) {
                                if (common & ADVERTISE_1000XFULL)
                                        current_duplex = DUPLEX_FULL;
                                else
                                        current_duplex = DUPLEX_HALF;
                        } else if (!tg3_flag(tp, 5780_CLASS)) {
                                /* Link is up via parallel detect */
                        } else {
                                current_link_up = 0;
                        }
                }
        }

        if (current_link_up == 1 && current_duplex == DUPLEX_FULL)
                tg3_setup_flow_control(tp, local_adv, remote_adv);

        tp->mac_mode &= ~MAC_MODE_HALF_DUPLEX;
        if (tp->link_config.active_duplex == DUPLEX_HALF)
                tp->mac_mode |= MAC_MODE_HALF_DUPLEX;

        tw32_f(MAC_MODE, tp->mac_mode);
        udelay(40);

        tw32_f(MAC_EVENT, MAC_EVENT_LNKSTATE_CHANGED);

        tp->link_config.active_speed = current_speed;
        tp->link_config.active_duplex = current_duplex;

        if (current_link_up != netif_carrier_ok(tp->dev)) {
                if (current_link_up)
                        netif_carrier_on(tp->dev);
                else {
                        netif_carrier_off(tp->dev);
                        tp->phy_flags &= ~TG3_PHYFLG_PARALLEL_DETECT;
                }
                tg3_link_report(tp);
        }
        return err;
}

static void tg3_serdes_parallel_detect(struct tg3 *tp)
{
        if (tp->serdes_counter) {
                /* Give autoneg time to complete. */
                tp->serdes_counter--;
                return;
        }

        if (!netif_carrier_ok(tp->dev) &&
            (tp->link_config.autoneg == AUTONEG_ENABLE)) {
                u32 bmcr;

                tg3_readphy(tp, MII_BMCR, &bmcr);
                if (bmcr & BMCR_ANENABLE) {
                        u32 phy1, phy2;

                        /* Select shadow register 0x1f */
                        tg3_writephy(tp, MII_TG3_MISC_SHDW, 0x7c00);
                        tg3_readphy(tp, MII_TG3_MISC_SHDW, &phy1);

                        /* Select expansion interrupt status register */
                        tg3_writephy(tp, MII_TG3_DSP_ADDRESS,
                                         MII_TG3_DSP_EXP1_INT_STAT);
                        tg3_readphy(tp, MII_TG3_DSP_RW_PORT, &phy2);
                        tg3_readphy(tp, MII_TG3_DSP_RW_PORT, &phy2);

                        if ((phy1 & 0x10) && !(phy2 & 0x20)) {
                                /* We have signal detect and not receiving
                                 * config code words, link is up by parallel
                                 * detection.
                                 */

                                bmcr &= ~BMCR_ANENABLE;
                                bmcr |= BMCR_SPEED1000 | BMCR_FULLDPLX;
                                tg3_writephy(tp, MII_BMCR, bmcr);
                                tp->phy_flags |= TG3_PHYFLG_PARALLEL_DETECT;
                        }
                }
        } else if (netif_carrier_ok(tp->dev) &&
                   (tp->link_config.autoneg == AUTONEG_ENABLE) &&
                   (tp->phy_flags & TG3_PHYFLG_PARALLEL_DETECT)) {
                u32 phy2;

                /* Select expansion interrupt status register */
                tg3_writephy(tp, MII_TG3_DSP_ADDRESS,
                                 MII_TG3_DSP_EXP1_INT_STAT);
                tg3_readphy(tp, MII_TG3_DSP_RW_PORT, &phy2);
                if (phy2 & 0x20) {
                        u32 bmcr;

                        /* Config code words received, turn on autoneg. */
                        tg3_readphy(tp, MII_BMCR, &bmcr);
                        tg3_writephy(tp, MII_BMCR, bmcr | BMCR_ANENABLE);

                        tp->phy_flags &= ~TG3_PHYFLG_PARALLEL_DETECT;

                }
        }
}

static int tg3_setup_phy(struct tg3 *tp, int force_reset)
{
        u32 val;
        int err;

        if (tp->phy_flags & TG3_PHYFLG_PHY_SERDES)
                err = tg3_setup_fiber_phy(tp, force_reset);
        else if (tp->phy_flags & TG3_PHYFLG_MII_SERDES)
                err = tg3_setup_fiber_mii_phy(tp, force_reset);
        else
                err = tg3_setup_copper_phy(tp, force_reset);

        if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5784_AX) {
                u32 scale;

                val = tr32(TG3_CPMU_CLCK_STAT) & CPMU_CLCK_STAT_MAC_CLCK_MASK;
                if (val == CPMU_CLCK_STAT_MAC_CLCK_62_5)
                        scale = 65;
                else if (val == CPMU_CLCK_STAT_MAC_CLCK_6_25)
                        scale = 6;
                else
                        scale = 12;

                val = tr32(GRC_MISC_CFG) & ~GRC_MISC_CFG_PRESCALAR_MASK;
                val |= (scale << GRC_MISC_CFG_PRESCALAR_SHIFT);
                tw32(GRC_MISC_CFG, val);
        }

        val = (2 << TX_LENGTHS_IPG_CRS_SHIFT) |
              (6 << TX_LENGTHS_IPG_SHIFT);
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720)
                val |= tr32(MAC_TX_LENGTHS) &
                       (TX_LENGTHS_JMB_FRM_LEN_MSK |
                        TX_LENGTHS_CNT_DWN_VAL_MSK);

        if (tp->link_config.active_speed == SPEED_1000 &&
            tp->link_config.active_duplex == DUPLEX_HALF)
                tw32(MAC_TX_LENGTHS, val |
                     (0xff << TX_LENGTHS_SLOT_TIME_SHIFT));
        else
                tw32(MAC_TX_LENGTHS, val |
                     (32 << TX_LENGTHS_SLOT_TIME_SHIFT));

        if (!tg3_flag(tp, 5705_PLUS)) {
                if (netif_carrier_ok(tp->dev)) {
                        tw32(HOSTCC_STAT_COAL_TICKS,
                             tp->coal.stats_block_coalesce_usecs);
                } else {
                        tw32(HOSTCC_STAT_COAL_TICKS, 0);
                }
        }

        if (tg3_flag(tp, ASPM_WORKAROUND)) {
                val = tr32(PCIE_PWR_MGMT_THRESH);
                if (!netif_carrier_ok(tp->dev))
                        val = (val & ~PCIE_PWR_MGMT_L1_THRESH_MSK) |
                              tp->pwrmgmt_thresh;
                else
                        val |= PCIE_PWR_MGMT_L1_THRESH_MSK;
                tw32(PCIE_PWR_MGMT_THRESH, val);
        }

        return err;
}

static inline int tg3_irq_sync(struct tg3 *tp)
{
        return tp->irq_sync;
}

static inline void tg3_rd32_loop(struct tg3 *tp, u32 *dst, u32 off, u32 len)
{
        int i;

        dst = (u32 *)((u8 *)dst + off);
        for (i = 0; i < len; i += sizeof(u32))
                *dst++ = tr32(off + i);
}

static void tg3_dump_legacy_regs(struct tg3 *tp, u32 *regs)
{
        tg3_rd32_loop(tp, regs, TG3PCI_VENDOR, 0xb0);
        tg3_rd32_loop(tp, regs, MAILBOX_INTERRUPT_0, 0x200);
        tg3_rd32_loop(tp, regs, MAC_MODE, 0x4f0);
        tg3_rd32_loop(tp, regs, SNDDATAI_MODE, 0xe0);
        tg3_rd32_loop(tp, regs, SNDDATAC_MODE, 0x04);
        tg3_rd32_loop(tp, regs, SNDBDS_MODE, 0x80);
        tg3_rd32_loop(tp, regs, SNDBDI_MODE, 0x48);
        tg3_rd32_loop(tp, regs, SNDBDC_MODE, 0x04);
        tg3_rd32_loop(tp, regs, RCVLPC_MODE, 0x20);
        tg3_rd32_loop(tp, regs, RCVLPC_SELLST_BASE, 0x15c);
        tg3_rd32_loop(tp, regs, RCVDBDI_MODE, 0x0c);
        tg3_rd32_loop(tp, regs, RCVDBDI_JUMBO_BD, 0x3c);
        tg3_rd32_loop(tp, regs, RCVDBDI_BD_PROD_IDX_0, 0x44);
        tg3_rd32_loop(tp, regs, RCVDCC_MODE, 0x04);
        tg3_rd32_loop(tp, regs, RCVBDI_MODE, 0x20);
        tg3_rd32_loop(tp, regs, RCVCC_MODE, 0x14);
        tg3_rd32_loop(tp, regs, RCVLSC_MODE, 0x08);
        tg3_rd32_loop(tp, regs, MBFREE_MODE, 0x08);
        tg3_rd32_loop(tp, regs, HOSTCC_MODE, 0x100);

        if (tg3_flag(tp, SUPPORT_MSIX))
                tg3_rd32_loop(tp, regs, HOSTCC_RXCOL_TICKS_VEC1, 0x180);

        tg3_rd32_loop(tp, regs, MEMARB_MODE, 0x10);
        tg3_rd32_loop(tp, regs, BUFMGR_MODE, 0x58);
        tg3_rd32_loop(tp, regs, RDMAC_MODE, 0x08);
        tg3_rd32_loop(tp, regs, WDMAC_MODE, 0x08);
        tg3_rd32_loop(tp, regs, RX_CPU_MODE, 0x04);
        tg3_rd32_loop(tp, regs, RX_CPU_STATE, 0x04);
        tg3_rd32_loop(tp, regs, RX_CPU_PGMCTR, 0x04);
        tg3_rd32_loop(tp, regs, RX_CPU_HWBKPT, 0x04);

        if (!tg3_flag(tp, 5705_PLUS)) {
                tg3_rd32_loop(tp, regs, TX_CPU_MODE, 0x04);
                tg3_rd32_loop(tp, regs, TX_CPU_STATE, 0x04);
                tg3_rd32_loop(tp, regs, TX_CPU_PGMCTR, 0x04);
        }

        tg3_rd32_loop(tp, regs, GRCMBOX_INTERRUPT_0, 0x110);
        tg3_rd32_loop(tp, regs, FTQ_RESET, 0x120);
        tg3_rd32_loop(tp, regs, MSGINT_MODE, 0x0c);
        tg3_rd32_loop(tp, regs, DMAC_MODE, 0x04);
        tg3_rd32_loop(tp, regs, GRC_MODE, 0x4c);

        if (tg3_flag(tp, NVRAM))
                tg3_rd32_loop(tp, regs, NVRAM_CMD, 0x24);
}

static void tg3_dump_state(struct tg3 *tp)
{
        int i;
        u32 *regs;

        regs = kzalloc(TG3_REG_BLK_SIZE, GFP_ATOMIC);
        if (!regs) {
                netdev_err(tp->dev, "Failed allocating register dump buffer\n");
                return;
        }

        if (tg3_flag(tp, PCI_EXPRESS)) {
                /* Read up to but not including private PCI registers */
                for (i = 0; i < TG3_PCIE_TLDLPL_PORT; i += sizeof(u32))
                        regs[i / sizeof(u32)] = tr32(i);
        } else
                tg3_dump_legacy_regs(tp, regs);

        for (i = 0; i < TG3_REG_BLK_SIZE / sizeof(u32); i += 4) {
                if (!regs[i + 0] && !regs[i + 1] &&
                    !regs[i + 2] && !regs[i + 3])
                        continue;

                netdev_err(tp->dev, "0x%08x: 0x%08x, 0x%08x, 0x%08x, 0x%08x\n",
                           i * 4,
                           regs[i + 0], regs[i + 1], regs[i + 2], regs[i + 3]);
        }

        kfree(regs);

        for (i = 0; i < tp->irq_cnt; i++) {
                struct tg3_napi *tnapi = &tp->napi[i];

                /* SW status block */
                netdev_err(tp->dev,
                         "%d: Host status block [%08x:%08x:(%04x:%04x:%04x):(%04x:%04x)]\n",
                           i,
                           tnapi->hw_status->status,
                           tnapi->hw_status->status_tag,
                           tnapi->hw_status->rx_jumbo_consumer,
                           tnapi->hw_status->rx_consumer,
                           tnapi->hw_status->rx_mini_consumer,
                           tnapi->hw_status->idx[0].rx_producer,
                           tnapi->hw_status->idx[0].tx_consumer);

                netdev_err(tp->dev,
                "%d: NAPI info [%08x:%08x:(%04x:%04x:%04x):%04x:(%04x:%04x:%04x:%04x)]\n",
                           i,
                           tnapi->last_tag, tnapi->last_irq_tag,
                           tnapi->tx_prod, tnapi->tx_cons, tnapi->tx_pending,
                           tnapi->rx_rcb_ptr,
                           tnapi->prodring.rx_std_prod_idx,
                           tnapi->prodring.rx_std_cons_idx,
                           tnapi->prodring.rx_jmb_prod_idx,
                           tnapi->prodring.rx_jmb_cons_idx);
        }
}

/* This is called whenever we suspect that the system chipset is re-
 * ordering the sequence of MMIO to the tx send mailbox. The symptom
 * is bogus tx completions. We try to recover by setting the
 * TG3_FLAG_MBOX_WRITE_REORDER flag and resetting the chip later
 * in the workqueue.
 */
static void tg3_tx_recover(struct tg3 *tp)
{
        BUG_ON(tg3_flag(tp, MBOX_WRITE_REORDER) ||
               tp->write32_tx_mbox == tg3_write_indirect_mbox);

        netdev_warn(tp->dev,
                    "The system may be re-ordering memory-mapped I/O "
                    "cycles to the network device, attempting to recover. "
                    "Please report the problem to the driver maintainer "
                    "and include system chipset information.\n");

        spin_lock(&tp->lock);
        tg3_flag_set(tp, TX_RECOVERY_PENDING);
        spin_unlock(&tp->lock);
}

static inline u32 tg3_tx_avail(struct tg3_napi *tnapi)
{
        /* Tell compiler to fetch tx indices from memory. */
        barrier();
        return tnapi->tx_pending -
               ((tnapi->tx_prod - tnapi->tx_cons) & (TG3_TX_RING_SIZE - 1));
}

/* Tigon3 never reports partial packet sends.  So we do not
 * need special logic to handle SKBs that have not had all
 * of their frags sent yet, like SunGEM does.
 */
static void tg3_tx(struct tg3_napi *tnapi)
{
        struct tg3 *tp = tnapi->tp;
        u32 hw_idx = tnapi->hw_status->idx[0].tx_consumer;
        u32 sw_idx = tnapi->tx_cons;
        struct netdev_queue *txq;
        int index = tnapi - tp->napi;

        if (tg3_flag(tp, ENABLE_TSS))
                index--;

        txq = netdev_get_tx_queue(tp->dev, index);

        while (sw_idx != hw_idx) {
                struct tg3_tx_ring_info *ri = &tnapi->tx_buffers[sw_idx];
                struct sk_buff *skb = ri->skb;
                int i, tx_bug = 0;

                if (unlikely(skb == NULL)) {
                        tg3_tx_recover(tp);
                        return;
                }

                pci_unmap_single(tp->pdev,
                                 dma_unmap_addr(ri, mapping),
                                 skb_headlen(skb),
                                 PCI_DMA_TODEVICE);

                ri->skb = NULL;

                while (ri->fragmented) {
                        ri->fragmented = false;
                        sw_idx = NEXT_TX(sw_idx);
                        ri = &tnapi->tx_buffers[sw_idx];
                }

                sw_idx = NEXT_TX(sw_idx);

                for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
                        ri = &tnapi->tx_buffers[sw_idx];
                        if (unlikely(ri->skb != NULL || sw_idx == hw_idx))
                                tx_bug = 1;

                        pci_unmap_page(tp->pdev,
                                       dma_unmap_addr(ri, mapping),
                                       skb_frag_size(&skb_shinfo(skb)->frags[i]),
                                       PCI_DMA_TODEVICE);

                        while (ri->fragmented) {
                                ri->fragmented = false;
                                sw_idx = NEXT_TX(sw_idx);
                                ri = &tnapi->tx_buffers[sw_idx];
                        }

                        sw_idx = NEXT_TX(sw_idx);
                }

                dev_kfree_skb(skb);

                if (unlikely(tx_bug)) {
                        tg3_tx_recover(tp);
                        return;
                }
        }

        tnapi->tx_cons = sw_idx;

        /* Need to make the tx_cons update visible to tg3_start_xmit()
         * before checking for netif_queue_stopped().  Without the
         * memory barrier, there is a small possibility that tg3_start_xmit()
         * will miss it and cause the queue to be stopped forever.
         */
        smp_mb();

        if (unlikely(netif_tx_queue_stopped(txq) &&
                     (tg3_tx_avail(tnapi) > TG3_TX_WAKEUP_THRESH(tnapi)))) {
                __netif_tx_lock(txq, smp_processor_id());
                if (netif_tx_queue_stopped(txq) &&
                    (tg3_tx_avail(tnapi) > TG3_TX_WAKEUP_THRESH(tnapi)))
                        netif_tx_wake_queue(txq);
                __netif_tx_unlock(txq);
        }
}

static void tg3_rx_skb_free(struct tg3 *tp, struct ring_info *ri, u32 map_sz)
{
        if (!ri->skb)
                return;

        pci_unmap_single(tp->pdev, dma_unmap_addr(ri, mapping),
                         map_sz, PCI_DMA_FROMDEVICE);
        dev_kfree_skb_any(ri->skb);
        ri->skb = NULL;
}

/* Returns size of skb allocated or < 0 on error.
 *
 * We only need to fill in the address because the other members
 * of the RX descriptor are invariant, see tg3_init_rings.
 *
 * Note the purposeful assymetry of cpu vs. chip accesses.  For
 * posting buffers we only dirty the first cache line of the RX
 * descriptor (containing the address).  Whereas for the RX status
 * buffers the cpu only reads the last cacheline of the RX descriptor
 * (to fetch the error flags, vlan tag, checksum, and opaque cookie).
 */
static int tg3_alloc_rx_skb(struct tg3 *tp, struct tg3_rx_prodring_set *tpr,
                            u32 opaque_key, u32 dest_idx_unmasked)
{
        struct tg3_rx_buffer_desc *desc;
        struct ring_info *map;
        struct sk_buff *skb;
        dma_addr_t mapping;
        int skb_size, dest_idx;

        switch (opaque_key) {
        case RXD_OPAQUE_RING_STD:
                dest_idx = dest_idx_unmasked & tp->rx_std_ring_mask;
                desc = &tpr->rx_std[dest_idx];
                map = &tpr->rx_std_buffers[dest_idx];
                skb_size = tp->rx_pkt_map_sz;
                break;

        case RXD_OPAQUE_RING_JUMBO:
                dest_idx = dest_idx_unmasked & tp->rx_jmb_ring_mask;
                desc = &tpr->rx_jmb[dest_idx].std;
                map = &tpr->rx_jmb_buffers[dest_idx];
                skb_size = TG3_RX_JMB_MAP_SZ;
                break;

        default:
                return -EINVAL;
        }

        /* Do not overwrite any of the map or rp information
         * until we are sure we can commit to a new buffer.
         *
         * Callers depend upon this behavior and assume that
         * we leave everything unchanged if we fail.
         */
        skb = netdev_alloc_skb(tp->dev, skb_size + TG3_RX_OFFSET(tp));
        if (skb == NULL)
                return -ENOMEM;

        skb_reserve(skb, TG3_RX_OFFSET(tp));

        mapping = pci_map_single(tp->pdev, skb->data, skb_size,
                                 PCI_DMA_FROMDEVICE);
        if (pci_dma_mapping_error(tp->pdev, mapping)) {
                dev_kfree_skb(skb);
                return -EIO;
        }

        map->skb = skb;
        dma_unmap_addr_set(map, mapping, mapping);

        desc->addr_hi = ((u64)mapping >> 32);
        desc->addr_lo = ((u64)mapping & 0xffffffff);

        return skb_size;
}

/* We only need to move over in the address because the other
 * members of the RX descriptor are invariant.  See notes above
 * tg3_alloc_rx_skb for full details.
 */
static void tg3_recycle_rx(struct tg3_napi *tnapi,
                           struct tg3_rx_prodring_set *dpr,
                           u32 opaque_key, int src_idx,
                           u32 dest_idx_unmasked)
{
        struct tg3 *tp = tnapi->tp;
        struct tg3_rx_buffer_desc *src_desc, *dest_desc;
        struct ring_info *src_map, *dest_map;
        struct tg3_rx_prodring_set *spr = &tp->napi[0].prodring;
        int dest_idx;

        switch (opaque_key) {
        case RXD_OPAQUE_RING_STD:
                dest_idx = dest_idx_unmasked & tp->rx_std_ring_mask;
                dest_desc = &dpr->rx_std[dest_idx];
                dest_map = &dpr->rx_std_buffers[dest_idx];
                src_desc = &spr->rx_std[src_idx];
                src_map = &spr->rx_std_buffers[src_idx];
                break;

        case RXD_OPAQUE_RING_JUMBO:
                dest_idx = dest_idx_unmasked & tp->rx_jmb_ring_mask;
                dest_desc = &dpr->rx_jmb[dest_idx].std;
                dest_map = &dpr->rx_jmb_buffers[dest_idx];
                src_desc = &spr->rx_jmb[src_idx].std;
                src_map = &spr->rx_jmb_buffers[src_idx];
                break;

        default:
                return;
        }

        dest_map->skb = src_map->skb;
        dma_unmap_addr_set(dest_map, mapping,
                           dma_unmap_addr(src_map, mapping));
        dest_desc->addr_hi = src_desc->addr_hi;
        dest_desc->addr_lo = src_desc->addr_lo;

        /* Ensure that the update to the skb happens after the physical
         * addresses have been transferred to the new BD location.
         */
        smp_wmb();

        src_map->skb = NULL;
}

/* The RX ring scheme is composed of multiple rings which post fresh
 * buffers to the chip, and one special ring the chip uses to report
 * status back to the host.
 *
 * The special ring reports the status of received packets to the
 * host.  The chip does not write into the original descriptor the
 * RX buffer was obtained from.  The chip simply takes the original
 * descriptor as provided by the host, updates the status and length
 * field, then writes this into the next status ring entry.
 *
 * Each ring the host uses to post buffers to the chip is described
 * by a TG3_BDINFO entry in the chips SRAM area.  When a packet arrives,
 * it is first placed into the on-chip ram.  When the packet's length
 * is known, it walks down the TG3_BDINFO entries to select the ring.
 * Each TG3_BDINFO specifies a MAXLEN field and the first TG3_BDINFO
 * which is within the range of the new packet's length is chosen.
 *
 * The "separate ring for rx status" scheme may sound queer, but it makes
 * sense from a cache coherency perspective.  If only the host writes
 * to the buffer post rings, and only the chip writes to the rx status
 * rings, then cache lines never move beyond shared-modified state.
 * If both the host and chip were to write into the same ring, cache line
 * eviction could occur since both entities want it in an exclusive state.
 */
static int tg3_rx(struct tg3_napi *tnapi, int budget)
{
        struct tg3 *tp = tnapi->tp;
        u32 work_mask, rx_std_posted = 0;
        u32 std_prod_idx, jmb_prod_idx;
        u32 sw_idx = tnapi->rx_rcb_ptr;
        u16 hw_idx;
        int received;
        struct tg3_rx_prodring_set *tpr = &tnapi->prodring;

        hw_idx = *(tnapi->rx_rcb_prod_idx);
        /*
         * We need to order the read of hw_idx and the read of
         * the opaque cookie.
         */
        rmb();
        work_mask = 0;
        received = 0;
        std_prod_idx = tpr->rx_std_prod_idx;
        jmb_prod_idx = tpr->rx_jmb_prod_idx;
        while (sw_idx != hw_idx && budget > 0) {
                struct ring_info *ri;
                struct tg3_rx_buffer_desc *desc = &tnapi->rx_rcb[sw_idx];
                unsigned int len;
                struct sk_buff *skb;
                dma_addr_t dma_addr;
                u32 opaque_key, desc_idx, *post_ptr;

                desc_idx = desc->opaque & RXD_OPAQUE_INDEX_MASK;
                opaque_key = desc->opaque & RXD_OPAQUE_RING_MASK;
                if (opaque_key == RXD_OPAQUE_RING_STD) {
                        ri = &tp->napi[0].prodring.rx_std_buffers[desc_idx];
                        dma_addr = dma_unmap_addr(ri, mapping);
                        skb = ri->skb;
                        post_ptr = &std_prod_idx;
                        rx_std_posted++;
                } else if (opaque_key == RXD_OPAQUE_RING_JUMBO) {
                        ri = &tp->napi[0].prodring.rx_jmb_buffers[desc_idx];
                        dma_addr = dma_unmap_addr(ri, mapping);
                        skb = ri->skb;
                        post_ptr = &jmb_prod_idx;
                } else
                        goto next_pkt_nopost;

                work_mask |= opaque_key;

                if ((desc->err_vlan & RXD_ERR_MASK) != 0 &&
                    (desc->err_vlan != RXD_ERR_ODD_NIBBLE_RCVD_MII)) {
                drop_it:
                        tg3_recycle_rx(tnapi, tpr, opaque_key,
                                       desc_idx, *post_ptr);
                drop_it_no_recycle:
                        /* Other statistics kept track of by card. */
                        tp->rx_dropped++;
                        goto next_pkt;
                }

                len = ((desc->idx_len & RXD_LEN_MASK) >> RXD_LEN_SHIFT) -
                      ETH_FCS_LEN;

                if (len > TG3_RX_COPY_THRESH(tp)) {
                        int skb_size;

                        skb_size = tg3_alloc_rx_skb(tp, tpr, opaque_key,
                                                    *post_ptr);
                        if (skb_size < 0)
                                goto drop_it;

                        pci_unmap_single(tp->pdev, dma_addr, skb_size,
                                         PCI_DMA_FROMDEVICE);

                        /* Ensure that the update to the skb happens
                         * after the usage of the old DMA mapping.
                         */
                        smp_wmb();

                        ri->skb = NULL;

                        skb_put(skb, len);
                } else {
                        struct sk_buff *copy_skb;

                        tg3_recycle_rx(tnapi, tpr, opaque_key,
                                       desc_idx, *post_ptr);

                        copy_skb = netdev_alloc_skb(tp->dev, len +
                                                    TG3_RAW_IP_ALIGN);
                        if (copy_skb == NULL)
                                goto drop_it_no_recycle;

                        skb_reserve(copy_skb, TG3_RAW_IP_ALIGN);
                        skb_put(copy_skb, len);
                        pci_dma_sync_single_for_cpu(tp->pdev, dma_addr, len, PCI_DMA_FROMDEVICE);
                        skb_copy_from_linear_data(skb, copy_skb->data, len);
                        pci_dma_sync_single_for_device(tp->pdev, dma_addr, len, PCI_DMA_FROMDEVICE);

                        /* We'll reuse the original ring buffer. */
                        skb = copy_skb;
                }

                if ((tp->dev->features & NETIF_F_RXCSUM) &&
                    (desc->type_flags & RXD_FLAG_TCPUDP_CSUM) &&
                    (((desc->ip_tcp_csum & RXD_TCPCSUM_MASK)
                      >> RXD_TCPCSUM_SHIFT) == 0xffff))
                        skb->ip_summed = CHECKSUM_UNNECESSARY;
                else
                        skb_checksum_none_assert(skb);

                skb->protocol = eth_type_trans(skb, tp->dev);

                if (len > (tp->dev->mtu + ETH_HLEN) &&
                    skb->protocol != htons(ETH_P_8021Q)) {
                        dev_kfree_skb(skb);
                        goto drop_it_no_recycle;
                }

                if (desc->type_flags & RXD_FLAG_VLAN &&
                    !(tp->rx_mode & RX_MODE_KEEP_VLAN_TAG))
                        __vlan_hwaccel_put_tag(skb,
                                               desc->err_vlan & RXD_VLAN_MASK);

                napi_gro_receive(&tnapi->napi, skb);

                received++;
                budget--;

next_pkt:
                (*post_ptr)++;

                if (unlikely(rx_std_posted >= tp->rx_std_max_post)) {
                        tpr->rx_std_prod_idx = std_prod_idx &
                                               tp->rx_std_ring_mask;
                        tw32_rx_mbox(TG3_RX_STD_PROD_IDX_REG,
                                     tpr->rx_std_prod_idx);
                        work_mask &= ~RXD_OPAQUE_RING_STD;
                        rx_std_posted = 0;
                }
next_pkt_nopost:
                sw_idx++;
                sw_idx &= tp->rx_ret_ring_mask;

                /* Refresh hw_idx to see if there is new work */
                if (sw_idx == hw_idx) {
                        hw_idx = *(tnapi->rx_rcb_prod_idx);
                        rmb();
                }
        }

        /* ACK the status ring. */
        tnapi->rx_rcb_ptr = sw_idx;
        tw32_rx_mbox(tnapi->consmbox, sw_idx);

        /* Refill RX ring(s). */
        if (!tg3_flag(tp, ENABLE_RSS)) {
                if (work_mask & RXD_OPAQUE_RING_STD) {
                        tpr->rx_std_prod_idx = std_prod_idx &
                                               tp->rx_std_ring_mask;
                        tw32_rx_mbox(TG3_RX_STD_PROD_IDX_REG,
                                     tpr->rx_std_prod_idx);
                }
                if (work_mask & RXD_OPAQUE_RING_JUMBO) {
                        tpr->rx_jmb_prod_idx = jmb_prod_idx &
                                               tp->rx_jmb_ring_mask;
                        tw32_rx_mbox(TG3_RX_JMB_PROD_IDX_REG,
                                     tpr->rx_jmb_prod_idx);
                }
                mmiowb();
        } else if (work_mask) {
                /* rx_std_buffers[] and rx_jmb_buffers[] entries must be
                 * updated before the producer indices can be updated.
                 */
                smp_wmb();

                tpr->rx_std_prod_idx = std_prod_idx & tp->rx_std_ring_mask;
                tpr->rx_jmb_prod_idx = jmb_prod_idx & tp->rx_jmb_ring_mask;

                if (tnapi != &tp->napi[1])
                        napi_schedule(&tp->napi[1].napi);
        }

        return received;
}

static void tg3_poll_link(struct tg3 *tp)
{
        /* handle link change and other phy events */
        if (!(tg3_flag(tp, USE_LINKCHG_REG) || tg3_flag(tp, POLL_SERDES))) {
                struct tg3_hw_status *sblk = tp->napi[0].hw_status;

                if (sblk->status & SD_STATUS_LINK_CHG) {
                        sblk->status = SD_STATUS_UPDATED |
                                       (sblk->status & ~SD_STATUS_LINK_CHG);
                        spin_lock(&tp->lock);
                        if (tg3_flag(tp, USE_PHYLIB)) {
                                tw32_f(MAC_STATUS,
                                     (MAC_STATUS_SYNC_CHANGED |
                                      MAC_STATUS_CFG_CHANGED |
                                      MAC_STATUS_MI_COMPLETION |
                                      MAC_STATUS_LNKSTATE_CHANGED));
                                udelay(40);
                        } else
                                tg3_setup_phy(tp, 0);
                        spin_unlock(&tp->lock);
                }
        }
}

static int tg3_rx_prodring_xfer(struct tg3 *tp,
                                struct tg3_rx_prodring_set *dpr,
                                struct tg3_rx_prodring_set *spr)
{
        u32 si, di, cpycnt, src_prod_idx;
        int i, err = 0;

        while (1) {
                src_prod_idx = spr->rx_std_prod_idx;

                /* Make sure updates to the rx_std_buffers[] entries and the
                 * standard producer index are seen in the correct order.
                 */
                smp_rmb();

                if (spr->rx_std_cons_idx == src_prod_idx)
                        break;

                if (spr->rx_std_cons_idx < src_prod_idx)
                        cpycnt = src_prod_idx - spr->rx_std_cons_idx;
                else
                        cpycnt = tp->rx_std_ring_mask + 1 -
                                 spr->rx_std_cons_idx;

                cpycnt = min(cpycnt,
                             tp->rx_std_ring_mask + 1 - dpr->rx_std_prod_idx);

                si = spr->rx_std_cons_idx;
                di = dpr->rx_std_prod_idx;

                for (i = di; i < di + cpycnt; i++) {
                        if (dpr->rx_std_buffers[i].skb) {
                                cpycnt = i - di;
                                err = -ENOSPC;
                                break;
                        }
                }

                if (!cpycnt)
                        break;

                /* Ensure that updates to the rx_std_buffers ring and the
                 * shadowed hardware producer ring from tg3_recycle_skb() are
                 * ordered correctly WRT the skb check above.
                 */
                smp_rmb();

                memcpy(&dpr->rx_std_buffers[di],
                       &spr->rx_std_buffers[si],
                       cpycnt * sizeof(struct ring_info));

                for (i = 0; i < cpycnt; i++, di++, si++) {
                        struct tg3_rx_buffer_desc *sbd, *dbd;
                        sbd = &spr->rx_std[si];
                        dbd = &dpr->rx_std[di];
                        dbd->addr_hi = sbd->addr_hi;
                        dbd->addr_lo = sbd->addr_lo;
                }

                spr->rx_std_cons_idx = (spr->rx_std_cons_idx + cpycnt) &
                                       tp->rx_std_ring_mask;
                dpr->rx_std_prod_idx = (dpr->rx_std_prod_idx + cpycnt) &
                                       tp->rx_std_ring_mask;
        }

        while (1) {
                src_prod_idx = spr->rx_jmb_prod_idx;

                /* Make sure updates to the rx_jmb_buffers[] entries and
                 * the jumbo producer index are seen in the correct order.
                 */
                smp_rmb();

                if (spr->rx_jmb_cons_idx == src_prod_idx)
                        break;

                if (spr->rx_jmb_cons_idx < src_prod_idx)
                        cpycnt = src_prod_idx - spr->rx_jmb_cons_idx;
                else
                        cpycnt = tp->rx_jmb_ring_mask + 1 -
                                 spr->rx_jmb_cons_idx;

                cpycnt = min(cpycnt,
                             tp->rx_jmb_ring_mask + 1 - dpr->rx_jmb_prod_idx);

                si = spr->rx_jmb_cons_idx;
                di = dpr->rx_jmb_prod_idx;

                for (i = di; i < di + cpycnt; i++) {
                        if (dpr->rx_jmb_buffers[i].skb) {
                                cpycnt = i - di;
                                err = -ENOSPC;
                                break;
                        }
                }

                if (!cpycnt)
                        break;

                /* Ensure that updates to the rx_jmb_buffers ring and the
                 * shadowed hardware producer ring from tg3_recycle_skb() are
                 * ordered correctly WRT the skb check above.
                 */
                smp_rmb();

                memcpy(&dpr->rx_jmb_buffers[di],
                       &spr->rx_jmb_buffers[si],
                       cpycnt * sizeof(struct ring_info));

                for (i = 0; i < cpycnt; i++, di++, si++) {
                        struct tg3_rx_buffer_desc *sbd, *dbd;
                        sbd = &spr->rx_jmb[si].std;
                        dbd = &dpr->rx_jmb[di].std;
                        dbd->addr_hi = sbd->addr_hi;
                        dbd->addr_lo = sbd->addr_lo;
                }

                spr->rx_jmb_cons_idx = (spr->rx_jmb_cons_idx + cpycnt) &
                                       tp->rx_jmb_ring_mask;
                dpr->rx_jmb_prod_idx = (dpr->rx_jmb_prod_idx + cpycnt) &
                                       tp->rx_jmb_ring_mask;
        }

        return err;
}

static int tg3_poll_work(struct tg3_napi *tnapi, int work_done, int budget)
{
        struct tg3 *tp = tnapi->tp;

        /* run TX completion thread */
        if (tnapi->hw_status->idx[0].tx_consumer != tnapi->tx_cons) {
                tg3_tx(tnapi);
                if (unlikely(tg3_flag(tp, TX_RECOVERY_PENDING)))
                        return work_done;
        }

        /* run RX thread, within the bounds set by NAPI.
         * All RX "locking" is done by ensuring outside
         * code synchronizes with tg3->napi.poll()
         */
        if (*(tnapi->rx_rcb_prod_idx) != tnapi->rx_rcb_ptr)
                work_done += tg3_rx(tnapi, budget - work_done);

        if (tg3_flag(tp, ENABLE_RSS) && tnapi == &tp->napi[1]) {
                struct tg3_rx_prodring_set *dpr = &tp->napi[0].prodring;
                int i, err = 0;
                u32 std_prod_idx = dpr->rx_std_prod_idx;
                u32 jmb_prod_idx = dpr->rx_jmb_prod_idx;

                for (i = 1; i < tp->irq_cnt; i++)
                        err |= tg3_rx_prodring_xfer(tp, dpr,
                                                    &tp->napi[i].prodring);

                wmb();

                if (std_prod_idx != dpr->rx_std_prod_idx)
                        tw32_rx_mbox(TG3_RX_STD_PROD_IDX_REG,
                                     dpr->rx_std_prod_idx);

                if (jmb_prod_idx != dpr->rx_jmb_prod_idx)
                        tw32_rx_mbox(TG3_RX_JMB_PROD_IDX_REG,
                                     dpr->rx_jmb_prod_idx);

                mmiowb();

                if (err)
                        tw32_f(HOSTCC_MODE, tp->coal_now);
        }

        return work_done;
}

static inline void tg3_reset_task_schedule(struct tg3 *tp)
{
        if (!test_and_set_bit(TG3_FLAG_RESET_TASK_PENDING, tp->tg3_flags))
                schedule_work(&tp->reset_task);
}

static inline void tg3_reset_task_cancel(struct tg3 *tp)
{
        cancel_work_sync(&tp->reset_task);
        tg3_flag_clear(tp, RESET_TASK_PENDING);
}

static int tg3_poll_msix(struct napi_struct *napi, int budget)
{
        struct tg3_napi *tnapi = container_of(napi, struct tg3_napi, napi);
        struct tg3 *tp = tnapi->tp;
        int work_done = 0;
        struct tg3_hw_status *sblk = tnapi->hw_status;

        while (1) {
                work_done = tg3_poll_work(tnapi, work_done, budget);

                if (unlikely(tg3_flag(tp, TX_RECOVERY_PENDING)))
                        goto tx_recovery;

                if (unlikely(work_done >= budget))
                        break;

                /* tp->last_tag is used in tg3_int_reenable() below
                 * to tell the hw how much work has been processed,
                 * so we must read it before checking for more work.
                 */
                tnapi->last_tag = sblk->status_tag;
                tnapi->last_irq_tag = tnapi->last_tag;
                rmb();

                /* check for RX/TX work to do */
                if (likely(sblk->idx[0].tx_consumer == tnapi->tx_cons &&
                           *(tnapi->rx_rcb_prod_idx) == tnapi->rx_rcb_ptr)) {
                        napi_complete(napi);
                        /* Reenable interrupts. */
                        tw32_mailbox(tnapi->int_mbox, tnapi->last_tag << 24);
                        mmiowb();
                        break;
                }
        }

        return work_done;

tx_recovery:
        /* work_done is guaranteed to be less than budget. */
        napi_complete(napi);
        tg3_reset_task_schedule(tp);
        return work_done;
}

static void tg3_process_error(struct tg3 *tp)
{
        u32 val;
        bool real_error = false;

        if (tg3_flag(tp, ERROR_PROCESSED))
                return;

        /* Check Flow Attention register */
        val = tr32(HOSTCC_FLOW_ATTN);
        if (val & ~HOSTCC_FLOW_ATTN_MBUF_LWM) {
                netdev_err(tp->dev, "FLOW Attention error.  Resetting chip.\n");
                real_error = true;
        }

        if (tr32(MSGINT_STATUS) & ~MSGINT_STATUS_MSI_REQ) {
                netdev_err(tp->dev, "MSI Status error.  Resetting chip.\n");
                real_error = true;
        }

        if (tr32(RDMAC_STATUS) || tr32(WDMAC_STATUS)) {
                netdev_err(tp->dev, "DMA Status error.  Resetting chip.\n");
                real_error = true;
        }

        if (!real_error)
                return;

        tg3_dump_state(tp);

        tg3_flag_set(tp, ERROR_PROCESSED);
        tg3_reset_task_schedule(tp);
}

static int tg3_poll(struct napi_struct *napi, int budget)
{
        struct tg3_napi *tnapi = container_of(napi, struct tg3_napi, napi);
        struct tg3 *tp = tnapi->tp;
        int work_done = 0;
        struct tg3_hw_status *sblk = tnapi->hw_status;

        while (1) {
                if (sblk->status & SD_STATUS_ERROR)
                        tg3_process_error(tp);

                tg3_poll_link(tp);

                work_done = tg3_poll_work(tnapi, work_done, budget);

                if (unlikely(tg3_flag(tp, TX_RECOVERY_PENDING)))
                        goto tx_recovery;

                if (unlikely(work_done >= budget))
                        break;

                if (tg3_flag(tp, TAGGED_STATUS)) {
                        /* tp->last_tag is used in tg3_int_reenable() below
                         * to tell the hw how much work has been processed,
                         * so we must read it before checking for more work.
                         */
                        tnapi->last_tag = sblk->status_tag;
                        tnapi->last_irq_tag = tnapi->last_tag;
                        rmb();
                } else
                        sblk->status &= ~SD_STATUS_UPDATED;

                if (likely(!tg3_has_work(tnapi))) {
                        napi_complete(napi);
                        tg3_int_reenable(tnapi);
                        break;
                }
        }

        return work_done;

tx_recovery:
        /* work_done is guaranteed to be less than budget. */
        napi_complete(napi);
        tg3_reset_task_schedule(tp);
        return work_done;
}

static void tg3_napi_disable(struct tg3 *tp)
{
        int i;

        for (i = tp->irq_cnt - 1; i >= 0; i--)
                napi_disable(&tp->napi[i].napi);
}

static void tg3_napi_enable(struct tg3 *tp)
{
        int i;

        for (i = 0; i < tp->irq_cnt; i++)
                napi_enable(&tp->napi[i].napi);
}

static void tg3_napi_init(struct tg3 *tp)
{
        int i;

        netif_napi_add(tp->dev, &tp->napi[0].napi, tg3_poll, 64);
        for (i = 1; i < tp->irq_cnt; i++)
                netif_napi_add(tp->dev, &tp->napi[i].napi, tg3_poll_msix, 64);
}

static void tg3_napi_fini(struct tg3 *tp)
{
        int i;

        for (i = 0; i < tp->irq_cnt; i++)
                netif_napi_del(&tp->napi[i].napi);
}

static inline void tg3_netif_stop(struct tg3 *tp)
{
        tp->dev->trans_start = jiffies; /* prevent tx timeout */
        tg3_napi_disable(tp);
        netif_tx_disable(tp->dev);
}

static inline void tg3_netif_start(struct tg3 *tp)
{
        /* NOTE: unconditional netif_tx_wake_all_queues is only
         * appropriate so long as all callers are assured to
         * have free tx slots (such as after tg3_init_hw)
         */
        netif_tx_wake_all_queues(tp->dev);

        tg3_napi_enable(tp);
        tp->napi[0].hw_status->status |= SD_STATUS_UPDATED;
        tg3_enable_ints(tp);
}

static void tg3_irq_quiesce(struct tg3 *tp)
{
        int i;

        BUG_ON(tp->irq_sync);

        tp->irq_sync = 1;
        smp_mb();

        for (i = 0; i < tp->irq_cnt; i++)
                synchronize_irq(tp->napi[i].irq_vec);
}

/* Fully shutdown all tg3 driver activity elsewhere in the system.
 * If irq_sync is non-zero, then the IRQ handler must be synchronized
 * with as well.  Most of the time, this is not necessary except when
 * shutting down the device.
 */
static inline void tg3_full_lock(struct tg3 *tp, int irq_sync)
{
        spin_lock_bh(&tp->lock);
        if (irq_sync)
                tg3_irq_quiesce(tp);
}

static inline void tg3_full_unlock(struct tg3 *tp)
{
        spin_unlock_bh(&tp->lock);
}

/* One-shot MSI handler - Chip automatically disables interrupt
 * after sending MSI so driver doesn't have to do it.
 */
static irqreturn_t tg3_msi_1shot(int irq, void *dev_id)
{
        struct tg3_napi *tnapi = dev_id;
        struct tg3 *tp = tnapi->tp;

        prefetch(tnapi->hw_status);
        if (tnapi->rx_rcb)
                prefetch(&tnapi->rx_rcb[tnapi->rx_rcb_ptr]);

        if (likely(!tg3_irq_sync(tp)))
                napi_schedule(&tnapi->napi);

        return IRQ_HANDLED;
}

/* MSI ISR - No need to check for interrupt sharing and no need to
 * flush status block and interrupt mailbox. PCI ordering rules
 * guarantee that MSI will arrive after the status block.
 */
static irqreturn_t tg3_msi(int irq, void *dev_id)
{
        struct tg3_napi *tnapi = dev_id;
        struct tg3 *tp = tnapi->tp;

        prefetch(tnapi->hw_status);
        if (tnapi->rx_rcb)
                prefetch(&tnapi->rx_rcb[tnapi->rx_rcb_ptr]);
        /*
         * Writing any value to intr-mbox-0 clears PCI INTA# and
         * chip-internal interrupt pending events.
         * Writing non-zero to intr-mbox-0 additional tells the
         * NIC to stop sending us irqs, engaging "in-intr-handler"
         * event coalescing.
         */
        tw32_mailbox(tnapi->int_mbox, 0x00000001);
        if (likely(!tg3_irq_sync(tp)))
                napi_schedule(&tnapi->napi);

        return IRQ_RETVAL(1);
}

static irqreturn_t tg3_interrupt(int irq, void *dev_id)
{
        struct tg3_napi *tnapi = dev_id;
        struct tg3 *tp = tnapi->tp;
        struct tg3_hw_status *sblk = tnapi->hw_status;
        unsigned int handled = 1;

        /* In INTx mode, it is possible for the interrupt to arrive at
         * the CPU before the status block posted prior to the interrupt.
         * Reading the PCI State register will confirm whether the
         * interrupt is ours and will flush the status block.
         */
        if (unlikely(!(sblk->status & SD_STATUS_UPDATED))) {
                if (tg3_flag(tp, CHIP_RESETTING) ||
                    (tr32(TG3PCI_PCISTATE) & PCISTATE_INT_NOT_ACTIVE)) {
                        handled = 0;
                        goto out;
                }
        }

        /*
         * Writing any value to intr-mbox-0 clears PCI INTA# and
         * chip-internal interrupt pending events.
         * Writing non-zero to intr-mbox-0 additional tells the
         * NIC to stop sending us irqs, engaging "in-intr-handler"
         * event coalescing.
         *
         * Flush the mailbox to de-assert the IRQ immediately to prevent
         * spurious interrupts.  The flush impacts performance but
         * excessive spurious interrupts can be worse in some cases.
         */
        tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, 0x00000001);
        if (tg3_irq_sync(tp))
                goto out;
        sblk->status &= ~SD_STATUS_UPDATED;
        if (likely(tg3_has_work(tnapi))) {
                prefetch(&tnapi->rx_rcb[tnapi->rx_rcb_ptr]);
                napi_schedule(&tnapi->napi);
        } else {
                /* No work, shared interrupt perhaps?  re-enable
                 * interrupts, and flush that PCI write
                 */
                tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
                               0x00000000);
        }
out:
        return IRQ_RETVAL(handled);
}

static irqreturn_t tg3_interrupt_tagged(int irq, void *dev_id)
{
        struct tg3_napi *tnapi = dev_id;
        struct tg3 *tp = tnapi->tp;
        struct tg3_hw_status *sblk = tnapi->hw_status;
        unsigned int handled = 1;

        /* In INTx mode, it is possible for the interrupt to arrive at
         * the CPU before the status block posted prior to the interrupt.
         * Reading the PCI State register will confirm whether the
         * interrupt is ours and will flush the status block.
         */
        if (unlikely(sblk->status_tag == tnapi->last_irq_tag)) {
                if (tg3_flag(tp, CHIP_RESETTING) ||
                    (tr32(TG3PCI_PCISTATE) & PCISTATE_INT_NOT_ACTIVE)) {
                        handled = 0;
                        goto out;
                }
        }

        /*
         * writing any value to intr-mbox-0 clears PCI INTA# and
         * chip-internal interrupt pending events.
         * writing non-zero to intr-mbox-0 additional tells the
         * NIC to stop sending us irqs, engaging "in-intr-handler"
         * event coalescing.
         *
         * Flush the mailbox to de-assert the IRQ immediately to prevent
         * spurious interrupts.  The flush impacts performance but
         * excessive spurious interrupts can be worse in some cases.
         */
        tw32_mailbox_f(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, 0x00000001);

        /*
         * In a shared interrupt configuration, sometimes other devices'
         * interrupts will scream.  We record the current status tag here
         * so that the above check can report that the screaming interrupts
         * are unhandled.  Eventually they will be silenced.
         */
        tnapi->last_irq_tag = sblk->status_tag;

        if (tg3_irq_sync(tp))
                goto out;

        prefetch(&tnapi->rx_rcb[tnapi->rx_rcb_ptr]);

        napi_schedule(&tnapi->napi);

out:
        return IRQ_RETVAL(handled);
}

/* ISR for interrupt test */
static irqreturn_t tg3_test_isr(int irq, void *dev_id)
{
        struct tg3_napi *tnapi = dev_id;
        struct tg3 *tp = tnapi->tp;
        struct tg3_hw_status *sblk = tnapi->hw_status;

        if ((sblk->status & SD_STATUS_UPDATED) ||
            !(tr32(TG3PCI_PCISTATE) & PCISTATE_INT_NOT_ACTIVE)) {
                tg3_disable_ints(tp);
                return IRQ_RETVAL(1);
        }
        return IRQ_RETVAL(0);
}

static int tg3_init_hw(struct tg3 *, int);
static int tg3_halt(struct tg3 *, int, int);

/* Restart hardware after configuration changes, self-test, etc.
 * Invoked with tp->lock held.
 */
static int tg3_restart_hw(struct tg3 *tp, int reset_phy)
        __releases(tp->lock)
        __acquires(tp->lock)
{
        int err;

        err = tg3_init_hw(tp, reset_phy);
        if (err) {
                netdev_err(tp->dev,
                           "Failed to re-initialize device, aborting\n");
                tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
                tg3_full_unlock(tp);
                del_timer_sync(&tp->timer);
                tp->irq_sync = 0;
                tg3_napi_enable(tp);
                dev_close(tp->dev);
                tg3_full_lock(tp, 0);
        }
        return err;
}

#ifdef CONFIG_NET_POLL_CONTROLLER
static void tg3_poll_controller(struct net_device *dev)
{
        int i;
        struct tg3 *tp = netdev_priv(dev);

        for (i = 0; i < tp->irq_cnt; i++)
                tg3_interrupt(tp->napi[i].irq_vec, &tp->napi[i]);
}
#endif

static void tg3_reset_task(struct work_struct *work)
{
        struct tg3 *tp = container_of(work, struct tg3, reset_task);
        int err;

        tg3_full_lock(tp, 0);

        if (!netif_running(tp->dev)) {
                tg3_flag_clear(tp, RESET_TASK_PENDING);
                tg3_full_unlock(tp);
                return;
        }

        tg3_full_unlock(tp);

        tg3_phy_stop(tp);

        tg3_netif_stop(tp);

        tg3_full_lock(tp, 1);

        if (tg3_flag(tp, TX_RECOVERY_PENDING)) {
                tp->write32_tx_mbox = tg3_write32_tx_mbox;
                tp->write32_rx_mbox = tg3_write_flush_reg32;
                tg3_flag_set(tp, MBOX_WRITE_REORDER);
                tg3_flag_clear(tp, TX_RECOVERY_PENDING);
        }

        tg3_halt(tp, RESET_KIND_SHUTDOWN, 0);
        err = tg3_init_hw(tp, 1);
        if (err)
                goto out;

        tg3_netif_start(tp);

out:
        tg3_full_unlock(tp);

        if (!err)
                tg3_phy_start(tp);

        tg3_flag_clear(tp, RESET_TASK_PENDING);
}

static void tg3_tx_timeout(struct net_device *dev)
{
        struct tg3 *tp = netdev_priv(dev);

        if (netif_msg_tx_err(tp)) {
                netdev_err(dev, "transmit timed out, resetting\n");
                tg3_dump_state(tp);
        }

        tg3_reset_task_schedule(tp);
}

/* Test for DMA buffers crossing any 4GB boundaries: 4G, 8G, etc */
static inline int tg3_4g_overflow_test(dma_addr_t mapping, int len)
{
        u32 base = (u32) mapping & 0xffffffff;

        return (base > 0xffffdcc0) && (base + len + 8 < base);
}

/* Test for DMA addresses > 40-bit */
static inline int tg3_40bit_overflow_test(struct tg3 *tp, dma_addr_t mapping,
                                          int len)
{
#if defined(CONFIG_HIGHMEM) && (BITS_PER_LONG == 64)
        if (tg3_flag(tp, 40BIT_DMA_BUG))
                return ((u64) mapping + len) > DMA_BIT_MASK(40);
        return 0;
#else
        return 0;
#endif
}

static inline void tg3_tx_set_bd(struct tg3_tx_buffer_desc *txbd,
                                 dma_addr_t mapping, u32 len, u32 flags,
                                 u32 mss, u32 vlan)
{
        txbd->addr_hi = ((u64) mapping >> 32);
        txbd->addr_lo = ((u64) mapping & 0xffffffff);
        txbd->len_flags = (len << TXD_LEN_SHIFT) | (flags & 0x0000ffff);
        txbd->vlan_tag = (mss << TXD_MSS_SHIFT) | (vlan << TXD_VLAN_TAG_SHIFT);
}

static bool tg3_tx_frag_set(struct tg3_napi *tnapi, u32 *entry, u32 *budget,
                            dma_addr_t map, u32 len, u32 flags,
                            u32 mss, u32 vlan)
{
        struct tg3 *tp = tnapi->tp;
        bool hwbug = false;

        if (tg3_flag(tp, SHORT_DMA_BUG) && len <= 8)
                hwbug = 1;

        if (tg3_4g_overflow_test(map, len))
                hwbug = 1;

        if (tg3_40bit_overflow_test(tp, map, len))
                hwbug = 1;

        if (tg3_flag(tp, 4K_FIFO_LIMIT)) {
                u32 prvidx = *entry;
                u32 tmp_flag = flags & ~TXD_FLAG_END;
                while (len > TG3_TX_BD_DMA_MAX && *budget) {
                        u32 frag_len = TG3_TX_BD_DMA_MAX;
                        len -= TG3_TX_BD_DMA_MAX;

                        /* Avoid the 8byte DMA problem */
                        if (len <= 8) {
                                len += TG3_TX_BD_DMA_MAX / 2;
                                frag_len = TG3_TX_BD_DMA_MAX / 2;
                        }

                        tnapi->tx_buffers[*entry].fragmented = true;

                        tg3_tx_set_bd(&tnapi->tx_ring[*entry], map,
                                      frag_len, tmp_flag, mss, vlan);
                        *budget -= 1;
                        prvidx = *entry;
                        *entry = NEXT_TX(*entry);

                        map += frag_len;
                }

                if (len) {
                        if (*budget) {
                                tg3_tx_set_bd(&tnapi->tx_ring[*entry], map,
                                              len, flags, mss, vlan);
                                *budget -= 1;
                                *entry = NEXT_TX(*entry);
                        } else {
                                hwbug = 1;
                                tnapi->tx_buffers[prvidx].fragmented = false;
                        }
                }
        } else {
                tg3_tx_set_bd(&tnapi->tx_ring[*entry], map,
                              len, flags, mss, vlan);
                *entry = NEXT_TX(*entry);
        }

        return hwbug;
}

static void tg3_tx_skb_unmap(struct tg3_napi *tnapi, u32 entry, int last)
{
        int i;
        struct sk_buff *skb;
        struct tg3_tx_ring_info *txb = &tnapi->tx_buffers[entry];

        skb = txb->skb;
        txb->skb = NULL;

        pci_unmap_single(tnapi->tp->pdev,
                         dma_unmap_addr(txb, mapping),
                         skb_headlen(skb),
                         PCI_DMA_TODEVICE);

        while (txb->fragmented) {
                txb->fragmented = false;
                entry = NEXT_TX(entry);
                txb = &tnapi->tx_buffers[entry];
        }

        for (i = 0; i <= last; i++) {
                const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];

                entry = NEXT_TX(entry);
                txb = &tnapi->tx_buffers[entry];

                pci_unmap_page(tnapi->tp->pdev,
                               dma_unmap_addr(txb, mapping),
                               skb_frag_size(frag), PCI_DMA_TODEVICE);

                while (txb->fragmented) {
                        txb->fragmented = false;
                        entry = NEXT_TX(entry);
                        txb = &tnapi->tx_buffers[entry];
                }
        }
}

/* Workaround 4GB and 40-bit hardware DMA bugs. */
static int tigon3_dma_hwbug_workaround(struct tg3_napi *tnapi,
                                       struct sk_buff **pskb,
                                       u32 *entry, u32 *budget,
                                       u32 base_flags, u32 mss, u32 vlan)
{
        struct tg3 *tp = tnapi->tp;
        struct sk_buff *new_skb, *skb = *pskb;
        dma_addr_t new_addr = 0;
        int ret = 0;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5701)
                new_skb = skb_copy(skb, GFP_ATOMIC);
        else {
                int more_headroom = 4 - ((unsigned long)skb->data & 3);

                new_skb = skb_copy_expand(skb,
                                          skb_headroom(skb) + more_headroom,
                                          skb_tailroom(skb), GFP_ATOMIC);
        }

        if (!new_skb) {
                ret = -1;
        } else {
                /* New SKB is guaranteed to be linear. */
                new_addr = pci_map_single(tp->pdev, new_skb->data, new_skb->len,
                                          PCI_DMA_TODEVICE);
                /* Make sure the mapping succeeded */
                if (pci_dma_mapping_error(tp->pdev, new_addr)) {
                        dev_kfree_skb(new_skb);
                        ret = -1;
                } else {
                        u32 save_entry = *entry;

                        base_flags |= TXD_FLAG_END;

                        tnapi->tx_buffers[*entry].skb = new_skb;
                        dma_unmap_addr_set(&tnapi->tx_buffers[*entry],
                                           mapping, new_addr);

                        if (tg3_tx_frag_set(tnapi, entry, budget, new_addr,
                                            new_skb->len, base_flags,
                                            mss, vlan)) {
                                tg3_tx_skb_unmap(tnapi, save_entry, -1);
                                dev_kfree_skb(new_skb);
                                ret = -1;
                        }
                }
        }

        dev_kfree_skb(skb);
        *pskb = new_skb;
        return ret;
}

static netdev_tx_t tg3_start_xmit(struct sk_buff *, struct net_device *);

/* Use GSO to workaround a rare TSO bug that may be triggered when the
 * TSO header is greater than 80 bytes.
 */
static int tg3_tso_bug(struct tg3 *tp, struct sk_buff *skb)
{
        struct sk_buff *segs, *nskb;
        u32 frag_cnt_est = skb_shinfo(skb)->gso_segs * 3;

        /* Estimate the number of fragments in the worst case */
        if (unlikely(tg3_tx_avail(&tp->napi[0]) <= frag_cnt_est)) {
                netif_stop_queue(tp->dev);

                /* netif_tx_stop_queue() must be done before checking
                 * checking tx index in tg3_tx_avail() below, because in
                 * tg3_tx(), we update tx index before checking for
                 * netif_tx_queue_stopped().
                 */
                smp_mb();
                if (tg3_tx_avail(&tp->napi[0]) <= frag_cnt_est)
                        return NETDEV_TX_BUSY;

                netif_wake_queue(tp->dev);
        }

        segs = skb_gso_segment(skb, tp->dev->features & ~NETIF_F_TSO);
        if (IS_ERR(segs))
                goto tg3_tso_bug_end;

        do {
                nskb = segs;
                segs = segs->next;
                nskb->next = NULL;
                tg3_start_xmit(nskb, tp->dev);
        } while (segs);

tg3_tso_bug_end:
        dev_kfree_skb(skb);

        return NETDEV_TX_OK;
}

/* hard_start_xmit for devices that have the 4G bug and/or 40-bit bug and
 * support TG3_FLAG_HW_TSO_1 or firmware TSO only.
 */
static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
        struct tg3 *tp = netdev_priv(dev);
        u32 len, entry, base_flags, mss, vlan = 0;
        u32 budget;
        int i = -1, would_hit_hwbug;
        dma_addr_t mapping;
        struct tg3_napi *tnapi;
        struct netdev_queue *txq;
        unsigned int last;

        txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
        tnapi = &tp->napi[skb_get_queue_mapping(skb)];
        if (tg3_flag(tp, ENABLE_TSS))
                tnapi++;

        budget = tg3_tx_avail(tnapi);

        /* We are running in BH disabled context with netif_tx_lock
         * and TX reclaim runs via tp->napi.poll inside of a software
         * interrupt.  Furthermore, IRQ processing runs lockless so we have
         * no IRQ context deadlocks to worry about either.  Rejoice!
         */
        if (unlikely(budget <= (skb_shinfo(skb)->nr_frags + 1))) {
                if (!netif_tx_queue_stopped(txq)) {
                        netif_tx_stop_queue(txq);

                        /* This is a hard error, log it. */
                        netdev_err(dev,
                                   "BUG! Tx Ring full when queue awake!\n");
                }
                return NETDEV_TX_BUSY;
        }

        entry = tnapi->tx_prod;
        base_flags = 0;
        if (skb->ip_summed == CHECKSUM_PARTIAL)
                base_flags |= TXD_FLAG_TCPUDP_CSUM;

        mss = skb_shinfo(skb)->gso_size;
        if (mss) {
                struct iphdr *iph;
                u32 tcp_opt_len, hdr_len;

                if (skb_header_cloned(skb) &&
                    pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
                        goto drop;

                iph = ip_hdr(skb);
                tcp_opt_len = tcp_optlen(skb);

                if (skb_is_gso_v6(skb)) {
                        hdr_len = skb_headlen(skb) - ETH_HLEN;
                } else {
                        u32 ip_tcp_len;

                        ip_tcp_len = ip_hdrlen(skb) + sizeof(struct tcphdr);
                        hdr_len = ip_tcp_len + tcp_opt_len;

                        iph->check = 0;
                        iph->tot_len = htons(mss + hdr_len);
                }

                if (unlikely((ETH_HLEN + hdr_len) > 80) &&
                    tg3_flag(tp, TSO_BUG))
                        return tg3_tso_bug(tp, skb);

                base_flags |= (TXD_FLAG_CPU_PRE_DMA |
                               TXD_FLAG_CPU_POST_DMA);

                if (tg3_flag(tp, HW_TSO_1) ||
                    tg3_flag(tp, HW_TSO_2) ||
                    tg3_flag(tp, HW_TSO_3)) {
                        tcp_hdr(skb)->check = 0;
                        base_flags &= ~TXD_FLAG_TCPUDP_CSUM;
                } else
                        tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
                                                                 iph->daddr, 0,
                                                                 IPPROTO_TCP,
                                                                 0);

                if (tg3_flag(tp, HW_TSO_3)) {
                        mss |= (hdr_len & 0xc) << 12;
                        if (hdr_len & 0x10)
                                base_flags |= 0x00000010;
                        base_flags |= (hdr_len & 0x3e0) << 5;
                } else if (tg3_flag(tp, HW_TSO_2))
                        mss |= hdr_len << 9;
                else if (tg3_flag(tp, HW_TSO_1) ||
                         GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) {
                        if (tcp_opt_len || iph->ihl > 5) {
                                int tsflags;

                                tsflags = (iph->ihl - 5) + (tcp_opt_len >> 2);
                                mss |= (tsflags << 11);
                        }
                } else {
                        if (tcp_opt_len || iph->ihl > 5) {
                                int tsflags;

                                tsflags = (iph->ihl - 5) + (tcp_opt_len >> 2);
                                base_flags |= tsflags << 12;
                        }
                }
        }

        if (tg3_flag(tp, USE_JUMBO_BDFLAG) &&
            !mss && skb->len > VLAN_ETH_FRAME_LEN)
                base_flags |= TXD_FLAG_JMB_PKT;

        if (vlan_tx_tag_present(skb)) {
                base_flags |= TXD_FLAG_VLAN;
                vlan = vlan_tx_tag_get(skb);
        }

        len = skb_headlen(skb);

        mapping = pci_map_single(tp->pdev, skb->data, len, PCI_DMA_TODEVICE);
        if (pci_dma_mapping_error(tp->pdev, mapping))
                goto drop;


        tnapi->tx_buffers[entry].skb = skb;
        dma_unmap_addr_set(&tnapi->tx_buffers[entry], mapping, mapping);

        would_hit_hwbug = 0;

        if (tg3_flag(tp, 5701_DMA_BUG))
                would_hit_hwbug = 1;

        if (tg3_tx_frag_set(tnapi, &entry, &budget, mapping, len, base_flags |
                          ((skb_shinfo(skb)->nr_frags == 0) ? TXD_FLAG_END : 0),
                            mss, vlan)) {
                would_hit_hwbug = 1;
        /* Now loop through additional data fragments, and queue them. */
        } else if (skb_shinfo(skb)->nr_frags > 0) {
                u32 tmp_mss = mss;

                if (!tg3_flag(tp, HW_TSO_1) &&
                    !tg3_flag(tp, HW_TSO_2) &&
                    !tg3_flag(tp, HW_TSO_3))
                        tmp_mss = 0;

                last = skb_shinfo(skb)->nr_frags - 1;
                for (i = 0; i <= last; i++) {
                        skb_frag_t *frag = &skb_shinfo(skb)->frags[i];

                        len = skb_frag_size(frag);
                        mapping = skb_frag_dma_map(&tp->pdev->dev, frag, 0,
                                                   len, DMA_TO_DEVICE);

                        tnapi->tx_buffers[entry].skb = NULL;
                        dma_unmap_addr_set(&tnapi->tx_buffers[entry], mapping,
                                           mapping);
                        if (dma_mapping_error(&tp->pdev->dev, mapping))
                                goto dma_error;

                        if (!budget ||
                            tg3_tx_frag_set(tnapi, &entry, &budget, mapping,
                                            len, base_flags |
                                            ((i == last) ? TXD_FLAG_END : 0),
                                            tmp_mss, vlan)) {
                                would_hit_hwbug = 1;
                                break;
                        }
                }
        }

        if (would_hit_hwbug) {
                tg3_tx_skb_unmap(tnapi, tnapi->tx_prod, i);

                /* If the workaround fails due to memory/mapping
                 * failure, silently drop this packet.
                 */
                entry = tnapi->tx_prod;
                budget = tg3_tx_avail(tnapi);
                if (tigon3_dma_hwbug_workaround(tnapi, &skb, &entry, &budget,
                                                base_flags, mss, vlan))
                        goto drop_nofree;
        }

        skb_tx_timestamp(skb);

        /* Packets are ready, update Tx producer idx local and on card. */
        tw32_tx_mbox(tnapi->prodmbox, entry);

        tnapi->tx_prod = entry;
        if (unlikely(tg3_tx_avail(tnapi) <= (MAX_SKB_FRAGS + 1))) {
                netif_tx_stop_queue(txq);

                /* netif_tx_stop_queue() must be done before checking
                 * checking tx index in tg3_tx_avail() below, because in
                 * tg3_tx(), we update tx index before checking for
                 * netif_tx_queue_stopped().
                 */
                smp_mb();
                if (tg3_tx_avail(tnapi) > TG3_TX_WAKEUP_THRESH(tnapi))
                        netif_tx_wake_queue(txq);
        }

        mmiowb();
        return NETDEV_TX_OK;

dma_error:
        tg3_tx_skb_unmap(tnapi, tnapi->tx_prod, --i);
        tnapi->tx_buffers[tnapi->tx_prod].skb = NULL;
drop:
        dev_kfree_skb(skb);
drop_nofree:
        tp->tx_dropped++;
        return NETDEV_TX_OK;
}

static void tg3_mac_loopback(struct tg3 *tp, bool enable)
{
        if (enable) {
                tp->mac_mode &= ~(MAC_MODE_HALF_DUPLEX |
                                  MAC_MODE_PORT_MODE_MASK);

                tp->mac_mode |= MAC_MODE_PORT_INT_LPBACK;

                if (!tg3_flag(tp, 5705_PLUS))
                        tp->mac_mode |= MAC_MODE_LINK_POLARITY;

                if (tp->phy_flags & TG3_PHYFLG_10_100_ONLY)
                        tp->mac_mode |= MAC_MODE_PORT_MODE_MII;
                else
                        tp->mac_mode |= MAC_MODE_PORT_MODE_GMII;
        } else {
                tp->mac_mode &= ~MAC_MODE_PORT_INT_LPBACK;

                if (tg3_flag(tp, 5705_PLUS) ||
                    (tp->phy_flags & TG3_PHYFLG_PHY_SERDES) ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700)
                        tp->mac_mode &= ~MAC_MODE_LINK_POLARITY;
        }

        tw32(MAC_MODE, tp->mac_mode);
        udelay(40);
}

static int tg3_phy_lpbk_set(struct tg3 *tp, u32 speed, bool extlpbk)
{
        u32 val, bmcr, mac_mode, ptest = 0;

        tg3_phy_toggle_apd(tp, false);
        tg3_phy_toggle_automdix(tp, 0);

        if (extlpbk && tg3_phy_set_extloopbk(tp))
                return -EIO;

        bmcr = BMCR_FULLDPLX;
        switch (speed) {
        case SPEED_10:
                break;
        case SPEED_100:
                bmcr |= BMCR_SPEED100;
                break;
        case SPEED_1000:
        default:
                if (tp->phy_flags & TG3_PHYFLG_IS_FET) {
                        speed = SPEED_100;
                        bmcr |= BMCR_SPEED100;
                } else {
                        speed = SPEED_1000;
                        bmcr |= BMCR_SPEED1000;
                }
        }

        if (extlpbk) {
                if (!(tp->phy_flags & TG3_PHYFLG_IS_FET)) {
                        tg3_readphy(tp, MII_CTRL1000, &val);
                        val |= CTL1000_AS_MASTER |
                               CTL1000_ENABLE_MASTER;
                        tg3_writephy(tp, MII_CTRL1000, val);
                } else {
                        ptest = MII_TG3_FET_PTEST_TRIM_SEL |
                                MII_TG3_FET_PTEST_TRIM_2;
                        tg3_writephy(tp, MII_TG3_FET_PTEST, ptest);
                }
        } else
                bmcr |= BMCR_LOOPBACK;

        tg3_writephy(tp, MII_BMCR, bmcr);

        /* The write needs to be flushed for the FETs */
        if (tp->phy_flags & TG3_PHYFLG_IS_FET)
                tg3_readphy(tp, MII_BMCR, &bmcr);

        udelay(40);

        if ((tp->phy_flags & TG3_PHYFLG_IS_FET) &&
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785) {
                tg3_writephy(tp, MII_TG3_FET_PTEST, ptest |
                             MII_TG3_FET_PTEST_FRC_TX_LINK |
                             MII_TG3_FET_PTEST_FRC_TX_LOCK);

                /* The write needs to be flushed for the AC131 */
                tg3_readphy(tp, MII_TG3_FET_PTEST, &val);
        }

        /* Reset to prevent losing 1st rx packet intermittently */
        if ((tp->phy_flags & TG3_PHYFLG_MII_SERDES) &&
            tg3_flag(tp, 5780_CLASS)) {
                tw32_f(MAC_RX_MODE, RX_MODE_RESET);
                udelay(10);
                tw32_f(MAC_RX_MODE, tp->rx_mode);
        }

        mac_mode = tp->mac_mode &
                   ~(MAC_MODE_PORT_MODE_MASK | MAC_MODE_HALF_DUPLEX);
        if (speed == SPEED_1000)
                mac_mode |= MAC_MODE_PORT_MODE_GMII;
        else
                mac_mode |= MAC_MODE_PORT_MODE_MII;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700) {
                u32 masked_phy_id = tp->phy_id & TG3_PHY_ID_MASK;

                if (masked_phy_id == TG3_PHY_ID_BCM5401)
                        mac_mode &= ~MAC_MODE_LINK_POLARITY;
                else if (masked_phy_id == TG3_PHY_ID_BCM5411)
                        mac_mode |= MAC_MODE_LINK_POLARITY;

                tg3_writephy(tp, MII_TG3_EXT_CTRL,
                             MII_TG3_EXT_CTRL_LNK3_LED_MODE);
        }

        tw32(MAC_MODE, mac_mode);
        udelay(40);

        return 0;
}

static void tg3_set_loopback(struct net_device *dev, u32 features)
{
        struct tg3 *tp = netdev_priv(dev);

        if (features & NETIF_F_LOOPBACK) {
                if (tp->mac_mode & MAC_MODE_PORT_INT_LPBACK)
                        return;

                spin_lock_bh(&tp->lock);
                tg3_mac_loopback(tp, true);
                netif_carrier_on(tp->dev);
                spin_unlock_bh(&tp->lock);
                netdev_info(dev, "Internal MAC loopback mode enabled.\n");
        } else {
                if (!(tp->mac_mode & MAC_MODE_PORT_INT_LPBACK))
                        return;

                spin_lock_bh(&tp->lock);
                tg3_mac_loopback(tp, false);
                /* Force link status check */
                tg3_setup_phy(tp, 1);
                spin_unlock_bh(&tp->lock);
                netdev_info(dev, "Internal MAC loopback mode disabled.\n");
        }
}

static u32 tg3_fix_features(struct net_device *dev, u32 features)
{
        struct tg3 *tp = netdev_priv(dev);

        if (dev->mtu > ETH_DATA_LEN && tg3_flag(tp, 5780_CLASS))
                features &= ~NETIF_F_ALL_TSO;

        return features;
}

static int tg3_set_features(struct net_device *dev, u32 features)
{
        u32 changed = dev->features ^ features;

        if ((changed & NETIF_F_LOOPBACK) && netif_running(dev))
                tg3_set_loopback(dev, features);

        return 0;
}

static inline void tg3_set_mtu(struct net_device *dev, struct tg3 *tp,
                               int new_mtu)
{
        dev->mtu = new_mtu;

        if (new_mtu > ETH_DATA_LEN) {
                if (tg3_flag(tp, 5780_CLASS)) {
                        netdev_update_features(dev);
                        tg3_flag_clear(tp, TSO_CAPABLE);
                } else {
                        tg3_flag_set(tp, JUMBO_RING_ENABLE);
                }
        } else {
                if (tg3_flag(tp, 5780_CLASS)) {
                        tg3_flag_set(tp, TSO_CAPABLE);
                        netdev_update_features(dev);
                }
                tg3_flag_clear(tp, JUMBO_RING_ENABLE);
        }
}

static int tg3_change_mtu(struct net_device *dev, int new_mtu)
{
        struct tg3 *tp = netdev_priv(dev);
        int err;

        if (new_mtu < TG3_MIN_MTU || new_mtu > TG3_MAX_MTU(tp))
                return -EINVAL;

        if (!netif_running(dev)) {
                /* We'll just catch it later when the
                 * device is up'd.
                 */
                tg3_set_mtu(dev, tp, new_mtu);
                return 0;
        }

        tg3_phy_stop(tp);

        tg3_netif_stop(tp);

        tg3_full_lock(tp, 1);

        tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);

        tg3_set_mtu(dev, tp, new_mtu);

        err = tg3_restart_hw(tp, 0);

        if (!err)
                tg3_netif_start(tp);

        tg3_full_unlock(tp);

        if (!err)
                tg3_phy_start(tp);

        return err;
}

static void tg3_rx_prodring_free(struct tg3 *tp,
                                 struct tg3_rx_prodring_set *tpr)
{
        int i;

        if (tpr != &tp->napi[0].prodring) {
                for (i = tpr->rx_std_cons_idx; i != tpr->rx_std_prod_idx;
                     i = (i + 1) & tp->rx_std_ring_mask)
                        tg3_rx_skb_free(tp, &tpr->rx_std_buffers[i],
                                        tp->rx_pkt_map_sz);

                if (tg3_flag(tp, JUMBO_CAPABLE)) {
                        for (i = tpr->rx_jmb_cons_idx;
                             i != tpr->rx_jmb_prod_idx;
                             i = (i + 1) & tp->rx_jmb_ring_mask) {
                                tg3_rx_skb_free(tp, &tpr->rx_jmb_buffers[i],
                                                TG3_RX_JMB_MAP_SZ);
                        }
                }

                return;
        }

        for (i = 0; i <= tp->rx_std_ring_mask; i++)
                tg3_rx_skb_free(tp, &tpr->rx_std_buffers[i],
                                tp->rx_pkt_map_sz);

        if (tg3_flag(tp, JUMBO_CAPABLE) && !tg3_flag(tp, 5780_CLASS)) {
                for (i = 0; i <= tp->rx_jmb_ring_mask; i++)
                        tg3_rx_skb_free(tp, &tpr->rx_jmb_buffers[i],
                                        TG3_RX_JMB_MAP_SZ);
        }
}

/* Initialize rx rings for packet processing.
 *
 * The chip has been shut down and the driver detached from
 * the networking, so no interrupts or new tx packets will
 * end up in the driver.  tp->{tx,}lock are held and thus
 * we may not sleep.
 */
static int tg3_rx_prodring_alloc(struct tg3 *tp,
                                 struct tg3_rx_prodring_set *tpr)
{
        u32 i, rx_pkt_dma_sz;

        tpr->rx_std_cons_idx = 0;
        tpr->rx_std_prod_idx = 0;
        tpr->rx_jmb_cons_idx = 0;
        tpr->rx_jmb_prod_idx = 0;

        if (tpr != &tp->napi[0].prodring) {
                memset(&tpr->rx_std_buffers[0], 0,
                       TG3_RX_STD_BUFF_RING_SIZE(tp));
                if (tpr->rx_jmb_buffers)
                        memset(&tpr->rx_jmb_buffers[0], 0,
                               TG3_RX_JMB_BUFF_RING_SIZE(tp));
                goto done;
        }

        /* Zero out all descriptors. */
        memset(tpr->rx_std, 0, TG3_RX_STD_RING_BYTES(tp));

        rx_pkt_dma_sz = TG3_RX_STD_DMA_SZ;
        if (tg3_flag(tp, 5780_CLASS) &&
            tp->dev->mtu > ETH_DATA_LEN)
                rx_pkt_dma_sz = TG3_RX_JMB_DMA_SZ;
        tp->rx_pkt_map_sz = TG3_RX_DMA_TO_MAP_SZ(rx_pkt_dma_sz);

        /* Initialize invariants of the rings, we only set this
         * stuff once.  This works because the card does not
         * write into the rx buffer posting rings.
         */
        for (i = 0; i <= tp->rx_std_ring_mask; i++) {
                struct tg3_rx_buffer_desc *rxd;

                rxd = &tpr->rx_std[i];
                rxd->idx_len = rx_pkt_dma_sz << RXD_LEN_SHIFT;
                rxd->type_flags = (RXD_FLAG_END << RXD_FLAGS_SHIFT);
                rxd->opaque = (RXD_OPAQUE_RING_STD |
                               (i << RXD_OPAQUE_INDEX_SHIFT));
        }

        /* Now allocate fresh SKBs for each rx ring. */
        for (i = 0; i < tp->rx_pending; i++) {
                if (tg3_alloc_rx_skb(tp, tpr, RXD_OPAQUE_RING_STD, i) < 0) {
                        netdev_warn(tp->dev,
                                    "Using a smaller RX standard ring. Only "
                                    "%d out of %d buffers were allocated "
                                    "successfully\n", i, tp->rx_pending);
                        if (i == 0)
                                goto initfail;
                        tp->rx_pending = i;
                        break;
                }
        }

        if (!tg3_flag(tp, JUMBO_CAPABLE) || tg3_flag(tp, 5780_CLASS))
                goto done;

        memset(tpr->rx_jmb, 0, TG3_RX_JMB_RING_BYTES(tp));

        if (!tg3_flag(tp, JUMBO_RING_ENABLE))
                goto done;

        for (i = 0; i <= tp->rx_jmb_ring_mask; i++) {
                struct tg3_rx_buffer_desc *rxd;

                rxd = &tpr->rx_jmb[i].std;
                rxd->idx_len = TG3_RX_JMB_DMA_SZ << RXD_LEN_SHIFT;
                rxd->type_flags = (RXD_FLAG_END << RXD_FLAGS_SHIFT) |
                                  RXD_FLAG_JUMBO;
                rxd->opaque = (RXD_OPAQUE_RING_JUMBO |
                       (i << RXD_OPAQUE_INDEX_SHIFT));
        }

        for (i = 0; i < tp->rx_jumbo_pending; i++) {
                if (tg3_alloc_rx_skb(tp, tpr, RXD_OPAQUE_RING_JUMBO, i) < 0) {
                        netdev_warn(tp->dev,
                                    "Using a smaller RX jumbo ring. Only %d "
                                    "out of %d buffers were allocated "
                                    "successfully\n", i, tp->rx_jumbo_pending);
                        if (i == 0)
                                goto initfail;
                        tp->rx_jumbo_pending = i;
                        break;
                }
        }

done:
        return 0;

initfail:
        tg3_rx_prodring_free(tp, tpr);
        return -ENOMEM;
}

static void tg3_rx_prodring_fini(struct tg3 *tp,
                                 struct tg3_rx_prodring_set *tpr)
{
        kfree(tpr->rx_std_buffers);
        tpr->rx_std_buffers = NULL;
        kfree(tpr->rx_jmb_buffers);
        tpr->rx_jmb_buffers = NULL;
        if (tpr->rx_std) {
                dma_free_coherent(&tp->pdev->dev, TG3_RX_STD_RING_BYTES(tp),
                                  tpr->rx_std, tpr->rx_std_mapping);
                tpr->rx_std = NULL;
        }
        if (tpr->rx_jmb) {
                dma_free_coherent(&tp->pdev->dev, TG3_RX_JMB_RING_BYTES(tp),
                                  tpr->rx_jmb, tpr->rx_jmb_mapping);
                tpr->rx_jmb = NULL;
        }
}

static int tg3_rx_prodring_init(struct tg3 *tp,
                                struct tg3_rx_prodring_set *tpr)
{
        tpr->rx_std_buffers = kzalloc(TG3_RX_STD_BUFF_RING_SIZE(tp),
                                      GFP_KERNEL);
        if (!tpr->rx_std_buffers)
                return -ENOMEM;

        tpr->rx_std = dma_alloc_coherent(&tp->pdev->dev,
                                         TG3_RX_STD_RING_BYTES(tp),
                                         &tpr->rx_std_mapping,
                                         GFP_KERNEL);
        if (!tpr->rx_std)
                goto err_out;

        if (tg3_flag(tp, JUMBO_CAPABLE) && !tg3_flag(tp, 5780_CLASS)) {
                tpr->rx_jmb_buffers = kzalloc(TG3_RX_JMB_BUFF_RING_SIZE(tp),
                                              GFP_KERNEL);
                if (!tpr->rx_jmb_buffers)
                        goto err_out;

                tpr->rx_jmb = dma_alloc_coherent(&tp->pdev->dev,
                                                 TG3_RX_JMB_RING_BYTES(tp),
                                                 &tpr->rx_jmb_mapping,
                                                 GFP_KERNEL);
                if (!tpr->rx_jmb)
                        goto err_out;
        }

        return 0;

err_out:
        tg3_rx_prodring_fini(tp, tpr);
        return -ENOMEM;
}

/* Free up pending packets in all rx/tx rings.
 *
 * The chip has been shut down and the driver detached from
 * the networking, so no interrupts or new tx packets will
 * end up in the driver.  tp->{tx,}lock is not held and we are not
 * in an interrupt context and thus may sleep.
 */
static void tg3_free_rings(struct tg3 *tp)
{
        int i, j;

        for (j = 0; j < tp->irq_cnt; j++) {
                struct tg3_napi *tnapi = &tp->napi[j];

                tg3_rx_prodring_free(tp, &tnapi->prodring);

                if (!tnapi->tx_buffers)
                        continue;

                for (i = 0; i < TG3_TX_RING_SIZE; i++) {
                        struct sk_buff *skb = tnapi->tx_buffers[i].skb;

                        if (!skb)
                                continue;

                        tg3_tx_skb_unmap(tnapi, i,
                                         skb_shinfo(skb)->nr_frags - 1);

                        dev_kfree_skb_any(skb);
                }
        }
}

/* Initialize tx/rx rings for packet processing.
 *
 * The chip has been shut down and the driver detached from
 * the networking, so no interrupts or new tx packets will
 * end up in the driver.  tp->{tx,}lock are held and thus
 * we may not sleep.
 */
static int tg3_init_rings(struct tg3 *tp)
{
        int i;

        /* Free up all the SKBs. */
        tg3_free_rings(tp);

        for (i = 0; i < tp->irq_cnt; i++) {
                struct tg3_napi *tnapi = &tp->napi[i];

                tnapi->last_tag = 0;
                tnapi->last_irq_tag = 0;
                tnapi->hw_status->status = 0;
                tnapi->hw_status->status_tag = 0;
                memset(tnapi->hw_status, 0, TG3_HW_STATUS_SIZE);

                tnapi->tx_prod = 0;
                tnapi->tx_cons = 0;
                if (tnapi->tx_ring)
                        memset(tnapi->tx_ring, 0, TG3_TX_RING_BYTES);

                tnapi->rx_rcb_ptr = 0;
                if (tnapi->rx_rcb)
                        memset(tnapi->rx_rcb, 0, TG3_RX_RCB_RING_BYTES(tp));

                if (tg3_rx_prodring_alloc(tp, &tnapi->prodring)) {
                        tg3_free_rings(tp);
                        return -ENOMEM;
                }
        }

        return 0;
}

/*
 * Must not be invoked with interrupt sources disabled and
 * the hardware shutdown down.
 */
static void tg3_free_consistent(struct tg3 *tp)
{
        int i;

        for (i = 0; i < tp->irq_cnt; i++) {
                struct tg3_napi *tnapi = &tp->napi[i];

                if (tnapi->tx_ring) {
                        dma_free_coherent(&tp->pdev->dev, TG3_TX_RING_BYTES,
                                tnapi->tx_ring, tnapi->tx_desc_mapping);
                        tnapi->tx_ring = NULL;
                }

                kfree(tnapi->tx_buffers);
                tnapi->tx_buffers = NULL;

                if (tnapi->rx_rcb) {
                        dma_free_coherent(&tp->pdev->dev,
                                          TG3_RX_RCB_RING_BYTES(tp),
                                          tnapi->rx_rcb,
                                          tnapi->rx_rcb_mapping);
                        tnapi->rx_rcb = NULL;
                }

                tg3_rx_prodring_fini(tp, &tnapi->prodring);

                if (tnapi->hw_status) {
                        dma_free_coherent(&tp->pdev->dev, TG3_HW_STATUS_SIZE,
                                          tnapi->hw_status,
                                          tnapi->status_mapping);
                        tnapi->hw_status = NULL;
                }
        }

        if (tp->hw_stats) {
                dma_free_coherent(&tp->pdev->dev, sizeof(struct tg3_hw_stats),
                                  tp->hw_stats, tp->stats_mapping);
                tp->hw_stats = NULL;
        }
}

/*
 * Must not be invoked with interrupt sources disabled and
 * the hardware shutdown down.  Can sleep.
 */
static int tg3_alloc_consistent(struct tg3 *tp)
{
        int i;

        tp->hw_stats = dma_alloc_coherent(&tp->pdev->dev,
                                          sizeof(struct tg3_hw_stats),
                                          &tp->stats_mapping,
                                          GFP_KERNEL);
        if (!tp->hw_stats)
                goto err_out;

        memset(tp->hw_stats, 0, sizeof(struct tg3_hw_stats));

        for (i = 0; i < tp->irq_cnt; i++) {
                struct tg3_napi *tnapi = &tp->napi[i];
                struct tg3_hw_status *sblk;

                tnapi->hw_status = dma_alloc_coherent(&tp->pdev->dev,
                                                      TG3_HW_STATUS_SIZE,
                                                      &tnapi->status_mapping,
                                                      GFP_KERNEL);
                if (!tnapi->hw_status)
                        goto err_out;

                memset(tnapi->hw_status, 0, TG3_HW_STATUS_SIZE);
                sblk = tnapi->hw_status;

                if (tg3_rx_prodring_init(tp, &tnapi->prodring))
                        goto err_out;

                /* If multivector TSS is enabled, vector 0 does not handle
                 * tx interrupts.  Don't allocate any resources for it.
                 */
                if ((!i && !tg3_flag(tp, ENABLE_TSS)) ||
                    (i && tg3_flag(tp, ENABLE_TSS))) {
                        tnapi->tx_buffers = kzalloc(
                                               sizeof(struct tg3_tx_ring_info) *
                                               TG3_TX_RING_SIZE, GFP_KERNEL);
                        if (!tnapi->tx_buffers)
                                goto err_out;

                        tnapi->tx_ring = dma_alloc_coherent(&tp->pdev->dev,
                                                            TG3_TX_RING_BYTES,
                                                        &tnapi->tx_desc_mapping,
                                                            GFP_KERNEL);
                        if (!tnapi->tx_ring)
                                goto err_out;
                }

                /*
                 * When RSS is enabled, the status block format changes
                 * slightly.  The "rx_jumbo_consumer", "reserved",
                 * and "rx_mini_consumer" members get mapped to the
                 * other three rx return ring producer indexes.
                 */
                switch (i) {
                default:
                        tnapi->rx_rcb_prod_idx = &sblk->idx[0].rx_producer;
                        break;
                case 2:
                        tnapi->rx_rcb_prod_idx = &sblk->rx_jumbo_consumer;
                        break;
                case 3:
                        tnapi->rx_rcb_prod_idx = &sblk->reserved;
                        break;
                case 4:
                        tnapi->rx_rcb_prod_idx = &sblk->rx_mini_consumer;
                        break;
                }

                /*
                 * If multivector RSS is enabled, vector 0 does not handle
                 * rx or tx interrupts.  Don't allocate any resources for it.
                 */
                if (!i && tg3_flag(tp, ENABLE_RSS))
                        continue;

                tnapi->rx_rcb = dma_alloc_coherent(&tp->pdev->dev,
                                                   TG3_RX_RCB_RING_BYTES(tp),
                                                   &tnapi->rx_rcb_mapping,
                                                   GFP_KERNEL);
                if (!tnapi->rx_rcb)
                        goto err_out;

                memset(tnapi->rx_rcb, 0, TG3_RX_RCB_RING_BYTES(tp));
        }

        return 0;

err_out:
        tg3_free_consistent(tp);
        return -ENOMEM;
}

#define MAX_WAIT_CNT 1000

/* To stop a block, clear the enable bit and poll till it
 * clears.  tp->lock is held.
 */
static int tg3_stop_block(struct tg3 *tp, unsigned long ofs, u32 enable_bit, int silent)
{
        unsigned int i;
        u32 val;

        if (tg3_flag(tp, 5705_PLUS)) {
                switch (ofs) {
                case RCVLSC_MODE:
                case DMAC_MODE:
                case MBFREE_MODE:
                case BUFMGR_MODE:
                case MEMARB_MODE:
                        /* We can't enable/disable these bits of the
                         * 5705/5750, just say success.
                         */
                        return 0;

                default:
                        break;
                }
        }

        val = tr32(ofs);
        val &= ~enable_bit;
        tw32_f(ofs, val);

        for (i = 0; i < MAX_WAIT_CNT; i++) {
                udelay(100);
                val = tr32(ofs);
                if ((val & enable_bit) == 0)
                        break;
        }

        if (i == MAX_WAIT_CNT && !silent) {
                dev_err(&tp->pdev->dev,
                        "tg3_stop_block timed out, ofs=%lx enable_bit=%x\n",
                        ofs, enable_bit);
                return -ENODEV;
        }

        return 0;
}

/* tp->lock is held. */
static int tg3_abort_hw(struct tg3 *tp, int silent)
{
        int i, err;

        tg3_disable_ints(tp);

        tp->rx_mode &= ~RX_MODE_ENABLE;
        tw32_f(MAC_RX_MODE, tp->rx_mode);
        udelay(10);

        err  = tg3_stop_block(tp, RCVBDI_MODE, RCVBDI_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, RCVLPC_MODE, RCVLPC_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, RCVLSC_MODE, RCVLSC_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, RCVDBDI_MODE, RCVDBDI_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, RCVDCC_MODE, RCVDCC_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, RCVCC_MODE, RCVCC_MODE_ENABLE, silent);

        err |= tg3_stop_block(tp, SNDBDS_MODE, SNDBDS_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, SNDBDI_MODE, SNDBDI_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, SNDDATAI_MODE, SNDDATAI_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, RDMAC_MODE, RDMAC_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, SNDDATAC_MODE, SNDDATAC_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, DMAC_MODE, DMAC_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, SNDBDC_MODE, SNDBDC_MODE_ENABLE, silent);

        tp->mac_mode &= ~MAC_MODE_TDE_ENABLE;
        tw32_f(MAC_MODE, tp->mac_mode);
        udelay(40);

        tp->tx_mode &= ~TX_MODE_ENABLE;
        tw32_f(MAC_TX_MODE, tp->tx_mode);

        for (i = 0; i < MAX_WAIT_CNT; i++) {
                udelay(100);
                if (!(tr32(MAC_TX_MODE) & TX_MODE_ENABLE))
                        break;
        }
        if (i >= MAX_WAIT_CNT) {
                dev_err(&tp->pdev->dev,
                        "%s timed out, TX_MODE_ENABLE will not clear "
                        "MAC_TX_MODE=%08x\n", __func__, tr32(MAC_TX_MODE));
                err |= -ENODEV;
        }

        err |= tg3_stop_block(tp, HOSTCC_MODE, HOSTCC_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, WDMAC_MODE, WDMAC_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, MBFREE_MODE, MBFREE_MODE_ENABLE, silent);

        tw32(FTQ_RESET, 0xffffffff);
        tw32(FTQ_RESET, 0x00000000);

        err |= tg3_stop_block(tp, BUFMGR_MODE, BUFMGR_MODE_ENABLE, silent);
        err |= tg3_stop_block(tp, MEMARB_MODE, MEMARB_MODE_ENABLE, silent);

        for (i = 0; i < tp->irq_cnt; i++) {
                struct tg3_napi *tnapi = &tp->napi[i];
                if (tnapi->hw_status)
                        memset(tnapi->hw_status, 0, TG3_HW_STATUS_SIZE);
        }
        if (tp->hw_stats)
                memset(tp->hw_stats, 0, sizeof(struct tg3_hw_stats));

        return err;
}

/* Save PCI command register before chip reset */
static void tg3_save_pci_state(struct tg3 *tp)
{
        pci_read_config_word(tp->pdev, PCI_COMMAND, &tp->pci_cmd);
}

/* Restore PCI state after chip reset */
static void tg3_restore_pci_state(struct tg3 *tp)
{
        u32 val;

        /* Re-enable indirect register accesses. */
        pci_write_config_dword(tp->pdev, TG3PCI_MISC_HOST_CTRL,
                               tp->misc_host_ctrl);

        /* Set MAX PCI retry to zero. */
        val = (PCISTATE_ROM_ENABLE | PCISTATE_ROM_RETRY_ENABLE);
        if (tp->pci_chip_rev_id == CHIPREV_ID_5704_A0 &&
            tg3_flag(tp, PCIX_MODE))
                val |= PCISTATE_RETRY_SAME_DMA;
        /* Allow reads and writes to the APE register and memory space. */
        if (tg3_flag(tp, ENABLE_APE))
                val |= PCISTATE_ALLOW_APE_CTLSPC_WR |
                       PCISTATE_ALLOW_APE_SHMEM_WR |
                       PCISTATE_ALLOW_APE_PSPACE_WR;
        pci_write_config_dword(tp->pdev, TG3PCI_PCISTATE, val);

        pci_write_config_word(tp->pdev, PCI_COMMAND, tp->pci_cmd);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5785) {
                if (tg3_flag(tp, PCI_EXPRESS))
                        pcie_set_readrq(tp->pdev, tp->pcie_readrq);
                else {
                        pci_write_config_byte(tp->pdev, PCI_CACHE_LINE_SIZE,
                                              tp->pci_cacheline_sz);
                        pci_write_config_byte(tp->pdev, PCI_LATENCY_TIMER,
                                              tp->pci_lat_timer);
                }
        }

        /* Make sure PCI-X relaxed ordering bit is clear. */
        if (tg3_flag(tp, PCIX_MODE)) {
                u16 pcix_cmd;

                pci_read_config_word(tp->pdev, tp->pcix_cap + PCI_X_CMD,
                                     &pcix_cmd);
                pcix_cmd &= ~PCI_X_CMD_ERO;
                pci_write_config_word(tp->pdev, tp->pcix_cap + PCI_X_CMD,
                                      pcix_cmd);
        }

        if (tg3_flag(tp, 5780_CLASS)) {

                /* Chip reset on 5780 will reset MSI enable bit,
                 * so need to restore it.
                 */
                if (tg3_flag(tp, USING_MSI)) {
                        u16 ctrl;

                        pci_read_config_word(tp->pdev,
                                             tp->msi_cap + PCI_MSI_FLAGS,
                                             &ctrl);
                        pci_write_config_word(tp->pdev,
                                              tp->msi_cap + PCI_MSI_FLAGS,
                                              ctrl | PCI_MSI_FLAGS_ENABLE);
                        val = tr32(MSGINT_MODE);
                        tw32(MSGINT_MODE, val | MSGINT_MODE_ENABLE);
                }
        }
}

/* tp->lock is held. */
static int tg3_chip_reset(struct tg3 *tp)
{
        u32 val;
        void (*write_op)(struct tg3 *, u32, u32);
        int i, err;

        tg3_nvram_lock(tp);

        tg3_ape_lock(tp, TG3_APE_LOCK_GRC);

        /* No matching tg3_nvram_unlock() after this because
         * chip reset below will undo the nvram lock.
         */
        tp->nvram_lock_cnt = 0;

        /* GRC_MISC_CFG core clock reset will clear the memory
         * enable bit in PCI register 4 and the MSI enable bit
         * on some chips, so we save relevant registers here.
         */
        tg3_save_pci_state(tp);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752 ||
            tg3_flag(tp, 5755_PLUS))
                tw32(GRC_FASTBOOT_PC, 0);

        /*
         * We must avoid the readl() that normally takes place.
         * It locks machines, causes machine checks, and other
         * fun things.  So, temporarily disable the 5701
         * hardware workaround, while we do the reset.
         */
        write_op = tp->write32;
        if (write_op == tg3_write_flush_reg32)
                tp->write32 = tg3_write32;

        /* Prevent the irq handler from reading or writing PCI registers
         * during chip reset when the memory enable bit in the PCI command
         * register may be cleared.  The chip does not generate interrupt
         * at this time, but the irq handler may still be called due to irq
         * sharing or irqpoll.
         */
        tg3_flag_set(tp, CHIP_RESETTING);
        for (i = 0; i < tp->irq_cnt; i++) {
                struct tg3_napi *tnapi = &tp->napi[i];
                if (tnapi->hw_status) {
                        tnapi->hw_status->status = 0;
                        tnapi->hw_status->status_tag = 0;
                }
                tnapi->last_tag = 0;
                tnapi->last_irq_tag = 0;
        }
        smp_mb();

        for (i = 0; i < tp->irq_cnt; i++)
                synchronize_irq(tp->napi[i].irq_vec);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780) {
                val = tr32(TG3_PCIE_LNKCTL) & ~TG3_PCIE_LNKCTL_L1_PLL_PD_EN;
                tw32(TG3_PCIE_LNKCTL, val | TG3_PCIE_LNKCTL_L1_PLL_PD_DIS);
        }

        /* do the reset */
        val = GRC_MISC_CFG_CORECLK_RESET;

        if (tg3_flag(tp, PCI_EXPRESS)) {
                /* Force PCIe 1.0a mode */
                if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5785 &&
                    !tg3_flag(tp, 57765_PLUS) &&
                    tr32(TG3_PCIE_PHY_TSTCTL) ==
                    (TG3_PCIE_PHY_TSTCTL_PCIE10 | TG3_PCIE_PHY_TSTCTL_PSCRAM))
                        tw32(TG3_PCIE_PHY_TSTCTL, TG3_PCIE_PHY_TSTCTL_PSCRAM);

                if (tp->pci_chip_rev_id != CHIPREV_ID_5750_A0) {
                        tw32(GRC_MISC_CFG, (1 << 29));
                        val |= (1 << 29);
                }
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                tw32(VCPU_STATUS, tr32(VCPU_STATUS) | VCPU_STATUS_DRV_RESET);
                tw32(GRC_VCPU_EXT_CTRL,
                     tr32(GRC_VCPU_EXT_CTRL) & ~GRC_VCPU_EXT_CTRL_HALT_CPU);
        }

        /* Manage gphy power for all CPMU absent PCIe devices. */
        if (tg3_flag(tp, 5705_PLUS) && !tg3_flag(tp, CPMU_PRESENT))
                val |= GRC_MISC_CFG_KEEP_GPHY_POWER;

        tw32(GRC_MISC_CFG, val);

        /* restore 5701 hardware bug workaround write method */
        tp->write32 = write_op;

        /* Unfortunately, we have to delay before the PCI read back.
         * Some 575X chips even will not respond to a PCI cfg access
         * when the reset command is given to the chip.
         *
         * How do these hardware designers expect things to work
         * properly if the PCI write is posted for a long period
         * of time?  It is always necessary to have some method by
         * which a register read back can occur to push the write
         * out which does the reset.
         *
         * For most tg3 variants the trick below was working.
         * Ho hum...
         */
        udelay(120);

        /* Flush PCI posted writes.  The normal MMIO registers
         * are inaccessible at this time so this is the only
         * way to make this reliably (actually, this is no longer
         * the case, see above).  I tried to use indirect
         * register read/write but this upset some 5701 variants.
         */
        pci_read_config_dword(tp->pdev, PCI_COMMAND, &val);

        udelay(120);

        if (tg3_flag(tp, PCI_EXPRESS) && pci_pcie_cap(tp->pdev)) {
                u16 val16;

                if (tp->pci_chip_rev_id == CHIPREV_ID_5750_A0) {
                        int i;
                        u32 cfg_val;

                        /* Wait for link training to complete.  */
                        for (i = 0; i < 5000; i++)
                                udelay(100);

                        pci_read_config_dword(tp->pdev, 0xc4, &cfg_val);
                        pci_write_config_dword(tp->pdev, 0xc4,
                                               cfg_val | (1 << 15));
                }

                /* Clear the "no snoop" and "relaxed ordering" bits. */
                pci_read_config_word(tp->pdev,
                                     pci_pcie_cap(tp->pdev) + PCI_EXP_DEVCTL,
                                     &val16);
                val16 &= ~(PCI_EXP_DEVCTL_RELAX_EN |
                           PCI_EXP_DEVCTL_NOSNOOP_EN);
                /*
                 * Older PCIe devices only support the 128 byte
                 * MPS setting.  Enforce the restriction.
                 */
                if (!tg3_flag(tp, CPMU_PRESENT))
                        val16 &= ~PCI_EXP_DEVCTL_PAYLOAD;
                pci_write_config_word(tp->pdev,
                                      pci_pcie_cap(tp->pdev) + PCI_EXP_DEVCTL,
                                      val16);

                pcie_set_readrq(tp->pdev, tp->pcie_readrq);

                /* Clear error status */
                pci_write_config_word(tp->pdev,
                                      pci_pcie_cap(tp->pdev) + PCI_EXP_DEVSTA,
                                      PCI_EXP_DEVSTA_CED |
                                      PCI_EXP_DEVSTA_NFED |
                                      PCI_EXP_DEVSTA_FED |
                                      PCI_EXP_DEVSTA_URD);
        }

        tg3_restore_pci_state(tp);

        tg3_flag_clear(tp, CHIP_RESETTING);
        tg3_flag_clear(tp, ERROR_PROCESSED);

        val = 0;
        if (tg3_flag(tp, 5780_CLASS))
                val = tr32(MEMARB_MODE);
        tw32(MEMARB_MODE, val | MEMARB_MODE_ENABLE);

        if (tp->pci_chip_rev_id == CHIPREV_ID_5750_A3) {
                tg3_stop_fw(tp);
                tw32(0x5000, 0x400);
        }

        tw32(GRC_MODE, tp->grc_mode);

        if (tp->pci_chip_rev_id == CHIPREV_ID_5705_A0) {
                val = tr32(0xc4);

                tw32(0xc4, val | (1 << 15));
        }

        if ((tp->nic_sram_data_cfg & NIC_SRAM_DATA_CFG_MINI_PCI) != 0 &&
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) {
                tp->pci_clock_ctrl |= CLOCK_CTRL_CLKRUN_OENABLE;
                if (tp->pci_chip_rev_id == CHIPREV_ID_5705_A0)
                        tp->pci_clock_ctrl |= CLOCK_CTRL_FORCE_CLKRUN;
                tw32(TG3PCI_CLOCK_CTRL, tp->pci_clock_ctrl);
        }

        if (tp->phy_flags & TG3_PHYFLG_PHY_SERDES) {
                tp->mac_mode = MAC_MODE_PORT_MODE_TBI;
                val = tp->mac_mode;
        } else if (tp->phy_flags & TG3_PHYFLG_MII_SERDES) {
                tp->mac_mode = MAC_MODE_PORT_MODE_GMII;
                val = tp->mac_mode;
        } else
                val = 0;

        tw32_f(MAC_MODE, val);
        udelay(40);

        tg3_ape_unlock(tp, TG3_APE_LOCK_GRC);

        err = tg3_poll_fw(tp);
        if (err)
                return err;

        tg3_mdio_start(tp);

        if (tg3_flag(tp, PCI_EXPRESS) &&
            tp->pci_chip_rev_id != CHIPREV_ID_5750_A0 &&
            GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5785 &&
            !tg3_flag(tp, 57765_PLUS)) {
                val = tr32(0x7c00);

                tw32(0x7c00, val | (1 << 25));
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) {
                val = tr32(TG3_CPMU_CLCK_ORIDE);
                tw32(TG3_CPMU_CLCK_ORIDE, val & ~CPMU_CLCK_ORIDE_MAC_ORIDE_EN);
        }

        /* Reprobe ASF enable state.  */
        tg3_flag_clear(tp, ENABLE_ASF);
        tg3_flag_clear(tp, ASF_NEW_HANDSHAKE);
        tg3_read_mem(tp, NIC_SRAM_DATA_SIG, &val);
        if (val == NIC_SRAM_DATA_SIG_MAGIC) {
                u32 nic_cfg;

                tg3_read_mem(tp, NIC_SRAM_DATA_CFG, &nic_cfg);
                if (nic_cfg & NIC_SRAM_DATA_CFG_ASF_ENABLE) {
                        tg3_flag_set(tp, ENABLE_ASF);
                        tp->last_event_jiffies = jiffies;
                        if (tg3_flag(tp, 5750_PLUS))
                                tg3_flag_set(tp, ASF_NEW_HANDSHAKE);
                }
        }

        return 0;
}

/* tp->lock is held. */
static int tg3_halt(struct tg3 *tp, int kind, int silent)
{
        int err;

        tg3_stop_fw(tp);

        tg3_write_sig_pre_reset(tp, kind);

        tg3_abort_hw(tp, silent);
        err = tg3_chip_reset(tp);

        __tg3_set_mac_addr(tp, 0);

        tg3_write_sig_legacy(tp, kind);
        tg3_write_sig_post_reset(tp, kind);

        if (err)
                return err;

        return 0;
}

static int tg3_set_mac_addr(struct net_device *dev, void *p)
{
        struct tg3 *tp = netdev_priv(dev);
        struct sockaddr *addr = p;
        int err = 0, skip_mac_1 = 0;

        if (!is_valid_ether_addr(addr->sa_data))
                return -EINVAL;

        memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);

        if (!netif_running(dev))
                return 0;

        if (tg3_flag(tp, ENABLE_ASF)) {
                u32 addr0_high, addr0_low, addr1_high, addr1_low;

                addr0_high = tr32(MAC_ADDR_0_HIGH);
                addr0_low = tr32(MAC_ADDR_0_LOW);
                addr1_high = tr32(MAC_ADDR_1_HIGH);
                addr1_low = tr32(MAC_ADDR_1_LOW);

                /* Skip MAC addr 1 if ASF is using it. */
                if ((addr0_high != addr1_high || addr0_low != addr1_low) &&
                    !(addr1_high == 0 && addr1_low == 0))
                        skip_mac_1 = 1;
        }
        spin_lock_bh(&tp->lock);
        __tg3_set_mac_addr(tp, skip_mac_1);
        spin_unlock_bh(&tp->lock);

        return err;
}

/* tp->lock is held. */
static void tg3_set_bdinfo(struct tg3 *tp, u32 bdinfo_addr,
                           dma_addr_t mapping, u32 maxlen_flags,
                           u32 nic_addr)
{
        tg3_write_mem(tp,
                      (bdinfo_addr + TG3_BDINFO_HOST_ADDR + TG3_64BIT_REG_HIGH),
                      ((u64) mapping >> 32));
        tg3_write_mem(tp,
                      (bdinfo_addr + TG3_BDINFO_HOST_ADDR + TG3_64BIT_REG_LOW),
                      ((u64) mapping & 0xffffffff));
        tg3_write_mem(tp,
                      (bdinfo_addr + TG3_BDINFO_MAXLEN_FLAGS),
                       maxlen_flags);

        if (!tg3_flag(tp, 5705_PLUS))
                tg3_write_mem(tp,
                              (bdinfo_addr + TG3_BDINFO_NIC_ADDR),
                              nic_addr);
}

static void __tg3_set_rx_mode(struct net_device *);
static void __tg3_set_coalesce(struct tg3 *tp, struct ethtool_coalesce *ec)
{
        int i;

        if (!tg3_flag(tp, ENABLE_TSS)) {
                tw32(HOSTCC_TXCOL_TICKS, ec->tx_coalesce_usecs);
                tw32(HOSTCC_TXMAX_FRAMES, ec->tx_max_coalesced_frames);
                tw32(HOSTCC_TXCOAL_MAXF_INT, ec->tx_max_coalesced_frames_irq);
        } else {
                tw32(HOSTCC_TXCOL_TICKS, 0);
                tw32(HOSTCC_TXMAX_FRAMES, 0);
                tw32(HOSTCC_TXCOAL_MAXF_INT, 0);
        }

        if (!tg3_flag(tp, ENABLE_RSS)) {
                tw32(HOSTCC_RXCOL_TICKS, ec->rx_coalesce_usecs);
                tw32(HOSTCC_RXMAX_FRAMES, ec->rx_max_coalesced_frames);
                tw32(HOSTCC_RXCOAL_MAXF_INT, ec->rx_max_coalesced_frames_irq);
        } else {
                tw32(HOSTCC_RXCOL_TICKS, 0);
                tw32(HOSTCC_RXMAX_FRAMES, 0);
                tw32(HOSTCC_RXCOAL_MAXF_INT, 0);
        }

        if (!tg3_flag(tp, 5705_PLUS)) {
                u32 val = ec->stats_block_coalesce_usecs;

                tw32(HOSTCC_RXCOAL_TICK_INT, ec->rx_coalesce_usecs_irq);
                tw32(HOSTCC_TXCOAL_TICK_INT, ec->tx_coalesce_usecs_irq);

                if (!netif_carrier_ok(tp->dev))
                        val = 0;

                tw32(HOSTCC_STAT_COAL_TICKS, val);
        }

        for (i = 0; i < tp->irq_cnt - 1; i++) {
                u32 reg;

                reg = HOSTCC_RXCOL_TICKS_VEC1 + i * 0x18;
                tw32(reg, ec->rx_coalesce_usecs);
                reg = HOSTCC_RXMAX_FRAMES_VEC1 + i * 0x18;
                tw32(reg, ec->rx_max_coalesced_frames);
                reg = HOSTCC_RXCOAL_MAXF_INT_VEC1 + i * 0x18;
                tw32(reg, ec->rx_max_coalesced_frames_irq);

                if (tg3_flag(tp, ENABLE_TSS)) {
                        reg = HOSTCC_TXCOL_TICKS_VEC1 + i * 0x18;
                        tw32(reg, ec->tx_coalesce_usecs);
                        reg = HOSTCC_TXMAX_FRAMES_VEC1 + i * 0x18;
                        tw32(reg, ec->tx_max_coalesced_frames);
                        reg = HOSTCC_TXCOAL_MAXF_INT_VEC1 + i * 0x18;
                        tw32(reg, ec->tx_max_coalesced_frames_irq);
                }
        }

        for (; i < tp->irq_max - 1; i++) {
                tw32(HOSTCC_RXCOL_TICKS_VEC1 + i * 0x18, 0);
                tw32(HOSTCC_RXMAX_FRAMES_VEC1 + i * 0x18, 0);
                tw32(HOSTCC_RXCOAL_MAXF_INT_VEC1 + i * 0x18, 0);

                if (tg3_flag(tp, ENABLE_TSS)) {
                        tw32(HOSTCC_TXCOL_TICKS_VEC1 + i * 0x18, 0);
                        tw32(HOSTCC_TXMAX_FRAMES_VEC1 + i * 0x18, 0);
                        tw32(HOSTCC_TXCOAL_MAXF_INT_VEC1 + i * 0x18, 0);
                }
        }
}

/* tp->lock is held. */
static void tg3_rings_reset(struct tg3 *tp)
{
        int i;
        u32 stblk, txrcb, rxrcb, limit;
        struct tg3_napi *tnapi = &tp->napi[0];

        /* Disable all transmit rings but the first. */
        if (!tg3_flag(tp, 5705_PLUS))
                limit = NIC_SRAM_SEND_RCB + TG3_BDINFO_SIZE * 16;
        else if (tg3_flag(tp, 5717_PLUS))
                limit = NIC_SRAM_SEND_RCB + TG3_BDINFO_SIZE * 4;
        else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765)
                limit = NIC_SRAM_SEND_RCB + TG3_BDINFO_SIZE * 2;
        else
                limit = NIC_SRAM_SEND_RCB + TG3_BDINFO_SIZE;

        for (txrcb = NIC_SRAM_SEND_RCB + TG3_BDINFO_SIZE;
             txrcb < limit; txrcb += TG3_BDINFO_SIZE)
                tg3_write_mem(tp, txrcb + TG3_BDINFO_MAXLEN_FLAGS,
                              BDINFO_FLAGS_DISABLED);


        /* Disable all receive return rings but the first. */
        if (tg3_flag(tp, 5717_PLUS))
                limit = NIC_SRAM_RCV_RET_RCB + TG3_BDINFO_SIZE * 17;
        else if (!tg3_flag(tp, 5705_PLUS))
                limit = NIC_SRAM_RCV_RET_RCB + TG3_BDINFO_SIZE * 16;
        else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5755 ||
                 GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765)
                limit = NIC_SRAM_RCV_RET_RCB + TG3_BDINFO_SIZE * 4;
        else
                limit = NIC_SRAM_RCV_RET_RCB + TG3_BDINFO_SIZE;

        for (rxrcb = NIC_SRAM_RCV_RET_RCB + TG3_BDINFO_SIZE;
             rxrcb < limit; rxrcb += TG3_BDINFO_SIZE)
                tg3_write_mem(tp, rxrcb + TG3_BDINFO_MAXLEN_FLAGS,
                              BDINFO_FLAGS_DISABLED);

        /* Disable interrupts */
        tw32_mailbox_f(tp->napi[0].int_mbox, 1);
        tp->napi[0].chk_msi_cnt = 0;
        tp->napi[0].last_rx_cons = 0;
        tp->napi[0].last_tx_cons = 0;

        /* Zero mailbox registers. */
        if (tg3_flag(tp, SUPPORT_MSIX)) {
                for (i = 1; i < tp->irq_max; i++) {
                        tp->napi[i].tx_prod = 0;
                        tp->napi[i].tx_cons = 0;
                        if (tg3_flag(tp, ENABLE_TSS))
                                tw32_mailbox(tp->napi[i].prodmbox, 0);
                        tw32_rx_mbox(tp->napi[i].consmbox, 0);
                        tw32_mailbox_f(tp->napi[i].int_mbox, 1);
                        tp->napi[i].chk_msi_cnt = 0;
                        tp->napi[i].last_rx_cons = 0;
                        tp->napi[i].last_tx_cons = 0;
                }
                if (!tg3_flag(tp, ENABLE_TSS))
                        tw32_mailbox(tp->napi[0].prodmbox, 0);
        } else {
                tp->napi[0].tx_prod = 0;
                tp->napi[0].tx_cons = 0;
                tw32_mailbox(tp->napi[0].prodmbox, 0);
                tw32_rx_mbox(tp->napi[0].consmbox, 0);
        }

        /* Make sure the NIC-based send BD rings are disabled. */
        if (!tg3_flag(tp, 5705_PLUS)) {
                u32 mbox = MAILBOX_SNDNIC_PROD_IDX_0 + TG3_64BIT_REG_LOW;
                for (i = 0; i < 16; i++)
                        tw32_tx_mbox(mbox + i * 8, 0);
        }

        txrcb = NIC_SRAM_SEND_RCB;
        rxrcb = NIC_SRAM_RCV_RET_RCB;

        /* Clear status block in ram. */
        memset(tnapi->hw_status, 0, TG3_HW_STATUS_SIZE);

        /* Set status block DMA address */
        tw32(HOSTCC_STATUS_BLK_HOST_ADDR + TG3_64BIT_REG_HIGH,
             ((u64) tnapi->status_mapping >> 32));
        tw32(HOSTCC_STATUS_BLK_HOST_ADDR + TG3_64BIT_REG_LOW,
             ((u64) tnapi->status_mapping & 0xffffffff));

        if (tnapi->tx_ring) {
                tg3_set_bdinfo(tp, txrcb, tnapi->tx_desc_mapping,
                               (TG3_TX_RING_SIZE <<
                                BDINFO_FLAGS_MAXLEN_SHIFT),
                               NIC_SRAM_TX_BUFFER_DESC);
                txrcb += TG3_BDINFO_SIZE;
        }

        if (tnapi->rx_rcb) {
                tg3_set_bdinfo(tp, rxrcb, tnapi->rx_rcb_mapping,
                               (tp->rx_ret_ring_mask + 1) <<
                                BDINFO_FLAGS_MAXLEN_SHIFT, 0);
                rxrcb += TG3_BDINFO_SIZE;
        }

        stblk = HOSTCC_STATBLCK_RING1;

        for (i = 1, tnapi++; i < tp->irq_cnt; i++, tnapi++) {
                u64 mapping = (u64)tnapi->status_mapping;
                tw32(stblk + TG3_64BIT_REG_HIGH, mapping >> 32);
                tw32(stblk + TG3_64BIT_REG_LOW, mapping & 0xffffffff);

                /* Clear status block in ram. */
                memset(tnapi->hw_status, 0, TG3_HW_STATUS_SIZE);

                if (tnapi->tx_ring) {
                        tg3_set_bdinfo(tp, txrcb, tnapi->tx_desc_mapping,
                                       (TG3_TX_RING_SIZE <<
                                        BDINFO_FLAGS_MAXLEN_SHIFT),
                                       NIC_SRAM_TX_BUFFER_DESC);
                        txrcb += TG3_BDINFO_SIZE;
                }

                tg3_set_bdinfo(tp, rxrcb, tnapi->rx_rcb_mapping,
                               ((tp->rx_ret_ring_mask + 1) <<
                                BDINFO_FLAGS_MAXLEN_SHIFT), 0);

                stblk += 8;
                rxrcb += TG3_BDINFO_SIZE;
        }
}

static void tg3_setup_rxbd_thresholds(struct tg3 *tp)
{
        u32 val, bdcache_maxcnt, host_rep_thresh, nic_rep_thresh;

        if (!tg3_flag(tp, 5750_PLUS) ||
            tg3_flag(tp, 5780_CLASS) ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752)
                bdcache_maxcnt = TG3_SRAM_RX_STD_BDCACHE_SIZE_5700;
        else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5755 ||
                 GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5787)
                bdcache_maxcnt = TG3_SRAM_RX_STD_BDCACHE_SIZE_5755;
        else
                bdcache_maxcnt = TG3_SRAM_RX_STD_BDCACHE_SIZE_5906;

        nic_rep_thresh = min(bdcache_maxcnt / 2, tp->rx_std_max_post);
        host_rep_thresh = max_t(u32, tp->rx_pending / 8, 1);

        val = min(nic_rep_thresh, host_rep_thresh);
        tw32(RCVBDI_STD_THRESH, val);

        if (tg3_flag(tp, 57765_PLUS))
                tw32(STD_REPLENISH_LWM, bdcache_maxcnt);

        if (!tg3_flag(tp, JUMBO_CAPABLE) || tg3_flag(tp, 5780_CLASS))
                return;

        if (!tg3_flag(tp, 5705_PLUS))
                bdcache_maxcnt = TG3_SRAM_RX_JMB_BDCACHE_SIZE_5700;
        else
                bdcache_maxcnt = TG3_SRAM_RX_JMB_BDCACHE_SIZE_5717;

        host_rep_thresh = max_t(u32, tp->rx_jumbo_pending / 8, 1);

        val = min(bdcache_maxcnt / 2, host_rep_thresh);
        tw32(RCVBDI_JUMBO_THRESH, val);

        if (tg3_flag(tp, 57765_PLUS))
                tw32(JMB_REPLENISH_LWM, bdcache_maxcnt);
}

/* tp->lock is held. */
static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
{
        u32 val, rdmac_mode;
        int i, err, limit;
        struct tg3_rx_prodring_set *tpr = &tp->napi[0].prodring;

        tg3_disable_ints(tp);

        tg3_stop_fw(tp);

        tg3_write_sig_pre_reset(tp, RESET_KIND_INIT);

        if (tg3_flag(tp, INIT_COMPLETE))
                tg3_abort_hw(tp, 1);

        /* Enable MAC control of LPI */
        if (tp->phy_flags & TG3_PHYFLG_EEE_CAP) {
                tw32_f(TG3_CPMU_EEE_LNKIDL_CTRL,
                       TG3_CPMU_EEE_LNKIDL_PCIE_NL0 |
                       TG3_CPMU_EEE_LNKIDL_UART_IDL);

                tw32_f(TG3_CPMU_EEE_CTRL,
                       TG3_CPMU_EEE_CTRL_EXIT_20_1_US);

                val = TG3_CPMU_EEEMD_ERLY_L1_XIT_DET |
                      TG3_CPMU_EEEMD_LPI_IN_TX |
                      TG3_CPMU_EEEMD_LPI_IN_RX |
                      TG3_CPMU_EEEMD_EEE_ENABLE;

                if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5717)
                        val |= TG3_CPMU_EEEMD_SND_IDX_DET_EN;

                if (tg3_flag(tp, ENABLE_APE))
                        val |= TG3_CPMU_EEEMD_APE_TX_DET_EN;

                tw32_f(TG3_CPMU_EEE_MODE, val);

                tw32_f(TG3_CPMU_EEE_DBTMR1,
                       TG3_CPMU_DBTMR1_PCIEXIT_2047US |
                       TG3_CPMU_DBTMR1_LNKIDLE_2047US);

                tw32_f(TG3_CPMU_EEE_DBTMR2,
                       TG3_CPMU_DBTMR2_APE_TX_2047US |
                       TG3_CPMU_DBTMR2_TXIDXEQ_2047US);
        }

        if (reset_phy)
                tg3_phy_reset(tp);

        err = tg3_chip_reset(tp);
        if (err)
                return err;

        tg3_write_sig_legacy(tp, RESET_KIND_INIT);

        if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5784_AX) {
                val = tr32(TG3_CPMU_CTRL);
                val &= ~(CPMU_CTRL_LINK_AWARE_MODE | CPMU_CTRL_LINK_IDLE_MODE);
                tw32(TG3_CPMU_CTRL, val);

                val = tr32(TG3_CPMU_LSPD_10MB_CLK);
                val &= ~CPMU_LSPD_10MB_MACCLK_MASK;
                val |= CPMU_LSPD_10MB_MACCLK_6_25;
                tw32(TG3_CPMU_LSPD_10MB_CLK, val);

                val = tr32(TG3_CPMU_LNK_AWARE_PWRMD);
                val &= ~CPMU_LNK_AWARE_MACCLK_MASK;
                val |= CPMU_LNK_AWARE_MACCLK_6_25;
                tw32(TG3_CPMU_LNK_AWARE_PWRMD, val);

                val = tr32(TG3_CPMU_HST_ACC);
                val &= ~CPMU_HST_ACC_MACCLK_MASK;
                val |= CPMU_HST_ACC_MACCLK_6_25;
                tw32(TG3_CPMU_HST_ACC, val);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780) {
                val = tr32(PCIE_PWR_MGMT_THRESH) & ~PCIE_PWR_MGMT_L1_THRESH_MSK;
                val |= PCIE_PWR_MGMT_EXT_ASPM_TMR_EN |
                       PCIE_PWR_MGMT_L1_THRESH_4MS;
                tw32(PCIE_PWR_MGMT_THRESH, val);

                val = tr32(TG3_PCIE_EIDLE_DELAY) & ~TG3_PCIE_EIDLE_DELAY_MASK;
                tw32(TG3_PCIE_EIDLE_DELAY, val | TG3_PCIE_EIDLE_DELAY_13_CLKS);

                tw32(TG3_CORR_ERR_STAT, TG3_CORR_ERR_STAT_CLEAR);

                val = tr32(TG3_PCIE_LNKCTL) & ~TG3_PCIE_LNKCTL_L1_PLL_PD_EN;
                tw32(TG3_PCIE_LNKCTL, val | TG3_PCIE_LNKCTL_L1_PLL_PD_DIS);
        }

        if (tg3_flag(tp, L1PLLPD_EN)) {
                u32 grc_mode = tr32(GRC_MODE);

                /* Access the lower 1K of PL PCIE block registers. */
                val = grc_mode & ~GRC_MODE_PCIE_PORT_MASK;
                tw32(GRC_MODE, val | GRC_MODE_PCIE_PL_SEL);

                val = tr32(TG3_PCIE_TLDLPL_PORT + TG3_PCIE_PL_LO_PHYCTL1);
                tw32(TG3_PCIE_TLDLPL_PORT + TG3_PCIE_PL_LO_PHYCTL1,
                     val | TG3_PCIE_PL_LO_PHYCTL1_L1PLLPD_EN);

                tw32(GRC_MODE, grc_mode);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765) {
                if (tp->pci_chip_rev_id == CHIPREV_ID_57765_A0) {
                        u32 grc_mode = tr32(GRC_MODE);

                        /* Access the lower 1K of PL PCIE block registers. */
                        val = grc_mode & ~GRC_MODE_PCIE_PORT_MASK;
                        tw32(GRC_MODE, val | GRC_MODE_PCIE_PL_SEL);

                        val = tr32(TG3_PCIE_TLDLPL_PORT +
                                   TG3_PCIE_PL_LO_PHYCTL5);
                        tw32(TG3_PCIE_TLDLPL_PORT + TG3_PCIE_PL_LO_PHYCTL5,
                             val | TG3_PCIE_PL_LO_PHYCTL5_DIS_L2CLKREQ);

                        tw32(GRC_MODE, grc_mode);
                }

                if (GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_57765_AX) {
                        u32 grc_mode = tr32(GRC_MODE);

                        /* Access the lower 1K of DL PCIE block registers. */
                        val = grc_mode & ~GRC_MODE_PCIE_PORT_MASK;
                        tw32(GRC_MODE, val | GRC_MODE_PCIE_DL_SEL);

                        val = tr32(TG3_PCIE_TLDLPL_PORT +
                                   TG3_PCIE_DL_LO_FTSMAX);
                        val &= ~TG3_PCIE_DL_LO_FTSMAX_MSK;
                        tw32(TG3_PCIE_TLDLPL_PORT + TG3_PCIE_DL_LO_FTSMAX,
                             val | TG3_PCIE_DL_LO_FTSMAX_VAL);

                        tw32(GRC_MODE, grc_mode);
                }

                val = tr32(TG3_CPMU_LSPD_10MB_CLK);
                val &= ~CPMU_LSPD_10MB_MACCLK_MASK;
                val |= CPMU_LSPD_10MB_MACCLK_6_25;
                tw32(TG3_CPMU_LSPD_10MB_CLK, val);
        }

        /* This works around an issue with Athlon chipsets on
         * B3 tigon3 silicon.  This bit has no effect on any
         * other revision.  But do not set this on PCI Express
         * chips and don't even touch the clocks if the CPMU is present.
         */
        if (!tg3_flag(tp, CPMU_PRESENT)) {
                if (!tg3_flag(tp, PCI_EXPRESS))
                        tp->pci_clock_ctrl |= CLOCK_CTRL_DELAY_PCI_GRANT;
                tw32_f(TG3PCI_CLOCK_CTRL, tp->pci_clock_ctrl);
        }

        if (tp->pci_chip_rev_id == CHIPREV_ID_5704_A0 &&
            tg3_flag(tp, PCIX_MODE)) {
                val = tr32(TG3PCI_PCISTATE);
                val |= PCISTATE_RETRY_SAME_DMA;
                tw32(TG3PCI_PCISTATE, val);
        }

        if (tg3_flag(tp, ENABLE_APE)) {
                /* Allow reads and writes to the
                 * APE register and memory space.
                 */
                val = tr32(TG3PCI_PCISTATE);
                val |= PCISTATE_ALLOW_APE_CTLSPC_WR |
                       PCISTATE_ALLOW_APE_SHMEM_WR |
                       PCISTATE_ALLOW_APE_PSPACE_WR;
                tw32(TG3PCI_PCISTATE, val);
        }

        if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5704_BX) {
                /* Enable some hw fixes.  */
                val = tr32(TG3PCI_MSI_DATA);
                val |= (1 << 26) | (1 << 28) | (1 << 29);
                tw32(TG3PCI_MSI_DATA, val);
        }

        /* Descriptor ring init may make accesses to the
         * NIC SRAM area to setup the TX descriptors, so we
         * can only do this after the hardware has been
         * successfully reset.
         */
        err = tg3_init_rings(tp);
        if (err)
                return err;

        if (tg3_flag(tp, 57765_PLUS)) {
                val = tr32(TG3PCI_DMA_RW_CTRL) &
                      ~DMA_RWCTRL_DIS_CACHE_ALIGNMENT;
                if (tp->pci_chip_rev_id == CHIPREV_ID_57765_A0)
                        val &= ~DMA_RWCTRL_CRDRDR_RDMA_MRRS_MSK;
                if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_57765 &&
                    GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5717)
                        val |= DMA_RWCTRL_TAGGED_STAT_WA;
                tw32(TG3PCI_DMA_RW_CTRL, val | tp->dma_rwctrl);
        } else if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5784 &&
                   GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5761) {
                /* This value is determined during the probe time DMA
                 * engine test, tg3_test_dma.
                 */
                tw32(TG3PCI_DMA_RW_CTRL, tp->dma_rwctrl);
        }

        tp->grc_mode &= ~(GRC_MODE_HOST_SENDBDS |
                          GRC_MODE_4X_NIC_SEND_RINGS |
                          GRC_MODE_NO_TX_PHDR_CSUM |
                          GRC_MODE_NO_RX_PHDR_CSUM);
        tp->grc_mode |= GRC_MODE_HOST_SENDBDS;

        /* Pseudo-header checksum is done by hardware logic and not
         * the offload processers, so make the chip do the pseudo-
         * header checksums on receive.  For transmit it is more
         * convenient to do the pseudo-header checksum in software
         * as Linux does that on transmit for us in all cases.
         */
        tp->grc_mode |= GRC_MODE_NO_TX_PHDR_CSUM;

        tw32(GRC_MODE,
             tp->grc_mode |
             (GRC_MODE_IRQ_ON_MAC_ATTN | GRC_MODE_HOST_STACKUP));

        /* Setup the timer prescalar register.  Clock is always 66Mhz. */
        val = tr32(GRC_MISC_CFG);
        val &= ~0xff;
        val |= (65 << GRC_MISC_CFG_PRESCALAR_SHIFT);
        tw32(GRC_MISC_CFG, val);

        /* Initialize MBUF/DESC pool. */
        if (tg3_flag(tp, 5750_PLUS)) {
                /* Do nothing.  */
        } else if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5705) {
                tw32(BUFMGR_MB_POOL_ADDR, NIC_SRAM_MBUF_POOL_BASE);
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704)
                        tw32(BUFMGR_MB_POOL_SIZE, NIC_SRAM_MBUF_POOL_SIZE64);
                else
                        tw32(BUFMGR_MB_POOL_SIZE, NIC_SRAM_MBUF_POOL_SIZE96);
                tw32(BUFMGR_DMA_DESC_POOL_ADDR, NIC_SRAM_DMA_DESC_POOL_BASE);
                tw32(BUFMGR_DMA_DESC_POOL_SIZE, NIC_SRAM_DMA_DESC_POOL_SIZE);
        } else if (tg3_flag(tp, TSO_CAPABLE)) {
                int fw_len;

                fw_len = tp->fw_len;
                fw_len = (fw_len + (0x80 - 1)) & ~(0x80 - 1);
                tw32(BUFMGR_MB_POOL_ADDR,
                     NIC_SRAM_MBUF_POOL_BASE5705 + fw_len);
                tw32(BUFMGR_MB_POOL_SIZE,
                     NIC_SRAM_MBUF_POOL_SIZE5705 - fw_len - 0xa00);
        }

        if (tp->dev->mtu <= ETH_DATA_LEN) {
                tw32(BUFMGR_MB_RDMA_LOW_WATER,
                     tp->bufmgr_config.mbuf_read_dma_low_water);
                tw32(BUFMGR_MB_MACRX_LOW_WATER,
                     tp->bufmgr_config.mbuf_mac_rx_low_water);
                tw32(BUFMGR_MB_HIGH_WATER,
                     tp->bufmgr_config.mbuf_high_water);
        } else {
                tw32(BUFMGR_MB_RDMA_LOW_WATER,
                     tp->bufmgr_config.mbuf_read_dma_low_water_jumbo);
                tw32(BUFMGR_MB_MACRX_LOW_WATER,
                     tp->bufmgr_config.mbuf_mac_rx_low_water_jumbo);
                tw32(BUFMGR_MB_HIGH_WATER,
                     tp->bufmgr_config.mbuf_high_water_jumbo);
        }
        tw32(BUFMGR_DMA_LOW_WATER,
             tp->bufmgr_config.dma_low_water);
        tw32(BUFMGR_DMA_HIGH_WATER,
             tp->bufmgr_config.dma_high_water);

        val = BUFMGR_MODE_ENABLE | BUFMGR_MODE_ATTN_ENABLE;
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
                val |= BUFMGR_MODE_NO_TX_UNDERRUN;
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
            tp->pci_chip_rev_id == CHIPREV_ID_5719_A0 ||
            tp->pci_chip_rev_id == CHIPREV_ID_5720_A0)
                val |= BUFMGR_MODE_MBLOW_ATTN_ENAB;
        tw32(BUFMGR_MODE, val);
        for (i = 0; i < 2000; i++) {
                if (tr32(BUFMGR_MODE) & BUFMGR_MODE_ENABLE)
                        break;
                udelay(10);
        }
        if (i >= 2000) {
                netdev_err(tp->dev, "%s cannot enable BUFMGR\n", __func__);
                return -ENODEV;
        }

        if (tp->pci_chip_rev_id == CHIPREV_ID_5906_A1)
                tw32(ISO_PKT_TX, (tr32(ISO_PKT_TX) & ~0x3) | 0x2);

        tg3_setup_rxbd_thresholds(tp);

        /* Initialize TG3_BDINFO's at:
         *  RCVDBDI_STD_BD:     standard eth size rx ring
         *  RCVDBDI_JUMBO_BD:   jumbo frame rx ring
         *  RCVDBDI_MINI_BD:    small frame rx ring (??? does not work)
         *
         * like so:
         *  TG3_BDINFO_HOST_ADDR:       high/low parts of DMA address of ring
         *  TG3_BDINFO_MAXLEN_FLAGS:    (rx max buffer size << 16) |
         *                              ring attribute flags
         *  TG3_BDINFO_NIC_ADDR:        location of descriptors in nic SRAM
         *
         * Standard receive ring @ NIC_SRAM_RX_BUFFER_DESC, 512 entries.
         * Jumbo receive ring @ NIC_SRAM_RX_JUMBO_BUFFER_DESC, 256 entries.
         *
         * The size of each ring is fixed in the firmware, but the location is
         * configurable.
         */
        tw32(RCVDBDI_STD_BD + TG3_BDINFO_HOST_ADDR + TG3_64BIT_REG_HIGH,
             ((u64) tpr->rx_std_mapping >> 32));
        tw32(RCVDBDI_STD_BD + TG3_BDINFO_HOST_ADDR + TG3_64BIT_REG_LOW,
             ((u64) tpr->rx_std_mapping & 0xffffffff));
        if (!tg3_flag(tp, 5717_PLUS))
                tw32(RCVDBDI_STD_BD + TG3_BDINFO_NIC_ADDR,
                     NIC_SRAM_RX_BUFFER_DESC);

        /* Disable the mini ring */
        if (!tg3_flag(tp, 5705_PLUS))
                tw32(RCVDBDI_MINI_BD + TG3_BDINFO_MAXLEN_FLAGS,
                     BDINFO_FLAGS_DISABLED);

        /* Program the jumbo buffer descriptor ring control
         * blocks on those devices that have them.
         */
        if (tp->pci_chip_rev_id == CHIPREV_ID_5719_A0 ||
            (tg3_flag(tp, JUMBO_CAPABLE) && !tg3_flag(tp, 5780_CLASS))) {

                if (tg3_flag(tp, JUMBO_RING_ENABLE)) {
                        tw32(RCVDBDI_JUMBO_BD + TG3_BDINFO_HOST_ADDR + TG3_64BIT_REG_HIGH,
                             ((u64) tpr->rx_jmb_mapping >> 32));
                        tw32(RCVDBDI_JUMBO_BD + TG3_BDINFO_HOST_ADDR + TG3_64BIT_REG_LOW,
                             ((u64) tpr->rx_jmb_mapping & 0xffffffff));
                        val = TG3_RX_JMB_RING_SIZE(tp) <<
                              BDINFO_FLAGS_MAXLEN_SHIFT;
                        tw32(RCVDBDI_JUMBO_BD + TG3_BDINFO_MAXLEN_FLAGS,
                             val | BDINFO_FLAGS_USE_EXT_RECV);
                        if (!tg3_flag(tp, USE_JUMBO_BDFLAG) ||
                            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765)
                                tw32(RCVDBDI_JUMBO_BD + TG3_BDINFO_NIC_ADDR,
                                     NIC_SRAM_RX_JUMBO_BUFFER_DESC);
                } else {
                        tw32(RCVDBDI_JUMBO_BD + TG3_BDINFO_MAXLEN_FLAGS,
                             BDINFO_FLAGS_DISABLED);
                }

                if (tg3_flag(tp, 57765_PLUS)) {
                        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765)
                                val = TG3_RX_STD_MAX_SIZE_5700;
                        else
                                val = TG3_RX_STD_MAX_SIZE_5717;
                        val <<= BDINFO_FLAGS_MAXLEN_SHIFT;
                        val |= (TG3_RX_STD_DMA_SZ << 2);
                } else
                        val = TG3_RX_STD_DMA_SZ << BDINFO_FLAGS_MAXLEN_SHIFT;
        } else
                val = TG3_RX_STD_MAX_SIZE_5700 << BDINFO_FLAGS_MAXLEN_SHIFT;

        tw32(RCVDBDI_STD_BD + TG3_BDINFO_MAXLEN_FLAGS, val);

        tpr->rx_std_prod_idx = tp->rx_pending;
        tw32_rx_mbox(TG3_RX_STD_PROD_IDX_REG, tpr->rx_std_prod_idx);

        tpr->rx_jmb_prod_idx =
                tg3_flag(tp, JUMBO_RING_ENABLE) ? tp->rx_jumbo_pending : 0;
        tw32_rx_mbox(TG3_RX_JMB_PROD_IDX_REG, tpr->rx_jmb_prod_idx);

        tg3_rings_reset(tp);

        /* Initialize MAC address and backoff seed. */
        __tg3_set_mac_addr(tp, 0);

        /* MTU + ethernet header + FCS + optional VLAN tag */
        tw32(MAC_RX_MTU_SIZE,
             tp->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);

        /* The slot time is changed by tg3_setup_phy if we
         * run at gigabit with half duplex.
         */
        val = (2 << TX_LENGTHS_IPG_CRS_SHIFT) |
              (6 << TX_LENGTHS_IPG_SHIFT) |
              (32 << TX_LENGTHS_SLOT_TIME_SHIFT);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720)
                val |= tr32(MAC_TX_LENGTHS) &
                       (TX_LENGTHS_JMB_FRM_LEN_MSK |
                        TX_LENGTHS_CNT_DWN_VAL_MSK);

        tw32(MAC_TX_LENGTHS, val);

        /* Receive rules. */
        tw32(MAC_RCV_RULE_CFG, RCV_RULE_CFG_DEFAULT_CLASS);
        tw32(RCVLPC_CONFIG, 0x0181);

        /* Calculate RDMAC_MODE setting early, we need it to determine
         * the RCVLPC_STATE_ENABLE mask.
         */
        rdmac_mode = (RDMAC_MODE_ENABLE | RDMAC_MODE_TGTABORT_ENAB |
                      RDMAC_MODE_MSTABORT_ENAB | RDMAC_MODE_PARITYERR_ENAB |
                      RDMAC_MODE_ADDROFLOW_ENAB | RDMAC_MODE_FIFOOFLOW_ENAB |
                      RDMAC_MODE_FIFOURUN_ENAB | RDMAC_MODE_FIFOOREAD_ENAB |
                      RDMAC_MODE_LNGREAD_ENAB);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717)
                rdmac_mode |= RDMAC_MODE_MULT_DMA_RD_DIS;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780)
                rdmac_mode |= RDMAC_MODE_BD_SBD_CRPT_ENAB |
                              RDMAC_MODE_MBUF_RBD_CRPT_ENAB |
                              RDMAC_MODE_MBUF_SBD_CRPT_ENAB;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705 &&
            tp->pci_chip_rev_id != CHIPREV_ID_5705_A0) {
                if (tg3_flag(tp, TSO_CAPABLE) &&
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) {
                        rdmac_mode |= RDMAC_MODE_FIFO_SIZE_128;
                } else if (!(tr32(TG3PCI_PCISTATE) & PCISTATE_BUS_SPEED_HIGH) &&
                           !tg3_flag(tp, IS_5788)) {
                        rdmac_mode |= RDMAC_MODE_FIFO_LONG_BURST;
                }
        }

        if (tg3_flag(tp, PCI_EXPRESS))
                rdmac_mode |= RDMAC_MODE_FIFO_LONG_BURST;

        if (tg3_flag(tp, HW_TSO_1) ||
            tg3_flag(tp, HW_TSO_2) ||
            tg3_flag(tp, HW_TSO_3))
                rdmac_mode |= RDMAC_MODE_IPV4_LSO_EN;

        if (tg3_flag(tp, 57765_PLUS) ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780)
                rdmac_mode |= RDMAC_MODE_IPV6_LSO_EN;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720)
                rdmac_mode |= tr32(RDMAC_MODE) & RDMAC_MODE_H2BNC_VLAN_DET;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780 ||
            tg3_flag(tp, 57765_PLUS)) {
                val = tr32(TG3_RDMA_RSRVCTRL_REG);
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) {
                        val &= ~(TG3_RDMA_RSRVCTRL_TXMRGN_MASK |
                                 TG3_RDMA_RSRVCTRL_FIFO_LWM_MASK |
                                 TG3_RDMA_RSRVCTRL_FIFO_HWM_MASK);
                        val |= TG3_RDMA_RSRVCTRL_TXMRGN_320B |
                               TG3_RDMA_RSRVCTRL_FIFO_LWM_1_5K |
                               TG3_RDMA_RSRVCTRL_FIFO_HWM_1_5K;
                }
                tw32(TG3_RDMA_RSRVCTRL_REG,
                     val | TG3_RDMA_RSRVCTRL_FIFO_OFLW_FIX);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) {
                val = tr32(TG3_LSO_RD_DMA_CRPTEN_CTRL);
                tw32(TG3_LSO_RD_DMA_CRPTEN_CTRL, val |
                     TG3_LSO_RD_DMA_CRPTEN_CTRL_BLEN_BD_4K |
                     TG3_LSO_RD_DMA_CRPTEN_CTRL_BLEN_LSO_4K);
        }

        /* Receive/send statistics. */
        if (tg3_flag(tp, 5750_PLUS)) {
                val = tr32(RCVLPC_STATS_ENABLE);
                val &= ~RCVLPC_STATSENAB_DACK_FIX;
                tw32(RCVLPC_STATS_ENABLE, val);
        } else if ((rdmac_mode & RDMAC_MODE_FIFO_SIZE_128) &&
                   tg3_flag(tp, TSO_CAPABLE)) {
                val = tr32(RCVLPC_STATS_ENABLE);
                val &= ~RCVLPC_STATSENAB_LNGBRST_RFIX;
                tw32(RCVLPC_STATS_ENABLE, val);
        } else {
                tw32(RCVLPC_STATS_ENABLE, 0xffffff);
        }
        tw32(RCVLPC_STATSCTRL, RCVLPC_STATSCTRL_ENABLE);
        tw32(SNDDATAI_STATSENAB, 0xffffff);
        tw32(SNDDATAI_STATSCTRL,
             (SNDDATAI_SCTRL_ENABLE |
              SNDDATAI_SCTRL_FASTUPD));

        /* Setup host coalescing engine. */
        tw32(HOSTCC_MODE, 0);
        for (i = 0; i < 2000; i++) {
                if (!(tr32(HOSTCC_MODE) & HOSTCC_MODE_ENABLE))
                        break;
                udelay(10);
        }

        __tg3_set_coalesce(tp, &tp->coal);

        if (!tg3_flag(tp, 5705_PLUS)) {
                /* Status/statistics block address.  See tg3_timer,
                 * the tg3_periodic_fetch_stats call there, and
                 * tg3_get_stats to see how this works for 5705/5750 chips.
                 */
                tw32(HOSTCC_STATS_BLK_HOST_ADDR + TG3_64BIT_REG_HIGH,
                     ((u64) tp->stats_mapping >> 32));
                tw32(HOSTCC_STATS_BLK_HOST_ADDR + TG3_64BIT_REG_LOW,
                     ((u64) tp->stats_mapping & 0xffffffff));
                tw32(HOSTCC_STATS_BLK_NIC_ADDR, NIC_SRAM_STATS_BLK);

                tw32(HOSTCC_STATUS_BLK_NIC_ADDR, NIC_SRAM_STATUS_BLK);

                /* Clear statistics and status block memory areas */
                for (i = NIC_SRAM_STATS_BLK;
                     i < NIC_SRAM_STATUS_BLK + TG3_HW_STATUS_SIZE;
                     i += sizeof(u32)) {
                        tg3_write_mem(tp, i, 0);
                        udelay(40);
                }
        }

        tw32(HOSTCC_MODE, HOSTCC_MODE_ENABLE | tp->coalesce_mode);

        tw32(RCVCC_MODE, RCVCC_MODE_ENABLE | RCVCC_MODE_ATTN_ENABLE);
        tw32(RCVLPC_MODE, RCVLPC_MODE_ENABLE);
        if (!tg3_flag(tp, 5705_PLUS))
                tw32(RCVLSC_MODE, RCVLSC_MODE_ENABLE | RCVLSC_MODE_ATTN_ENABLE);

        if (tp->phy_flags & TG3_PHYFLG_MII_SERDES) {
                tp->phy_flags &= ~TG3_PHYFLG_PARALLEL_DETECT;
                /* reset to prevent losing 1st rx packet intermittently */
                tw32_f(MAC_RX_MODE, RX_MODE_RESET);
                udelay(10);
        }

        tp->mac_mode |= MAC_MODE_TXSTAT_ENABLE | MAC_MODE_RXSTAT_ENABLE |
                        MAC_MODE_TDE_ENABLE | MAC_MODE_RDE_ENABLE |
                        MAC_MODE_FHDE_ENABLE;
        if (tg3_flag(tp, ENABLE_APE))
                tp->mac_mode |= MAC_MODE_APE_TX_EN | MAC_MODE_APE_RX_EN;
        if (!tg3_flag(tp, 5705_PLUS) &&
            !(tp->phy_flags & TG3_PHYFLG_PHY_SERDES) &&
            GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700)
                tp->mac_mode |= MAC_MODE_LINK_POLARITY;
        tw32_f(MAC_MODE, tp->mac_mode | MAC_MODE_RXSTAT_CLEAR | MAC_MODE_TXSTAT_CLEAR);
        udelay(40);

        /* tp->grc_local_ctrl is partially set up during tg3_get_invariants().
         * If TG3_FLAG_IS_NIC is zero, we should read the
         * register to preserve the GPIO settings for LOMs. The GPIOs,
         * whether used as inputs or outputs, are set by boot code after
         * reset.
         */
        if (!tg3_flag(tp, IS_NIC)) {
                u32 gpio_mask;

                gpio_mask = GRC_LCLCTRL_GPIO_OE0 | GRC_LCLCTRL_GPIO_OE1 |
                            GRC_LCLCTRL_GPIO_OE2 | GRC_LCLCTRL_GPIO_OUTPUT0 |
                            GRC_LCLCTRL_GPIO_OUTPUT1 | GRC_LCLCTRL_GPIO_OUTPUT2;

                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752)
                        gpio_mask |= GRC_LCLCTRL_GPIO_OE3 |
                                     GRC_LCLCTRL_GPIO_OUTPUT3;

                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5755)
                        gpio_mask |= GRC_LCLCTRL_GPIO_UART_SEL;

                tp->grc_local_ctrl &= ~gpio_mask;
                tp->grc_local_ctrl |= tr32(GRC_LOCAL_CTRL) & gpio_mask;

                /* GPIO1 must be driven high for eeprom write protect */
                if (tg3_flag(tp, EEPROM_WRITE_PROT))
                        tp->grc_local_ctrl |= (GRC_LCLCTRL_GPIO_OE1 |
                                               GRC_LCLCTRL_GPIO_OUTPUT1);
        }
        tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl);
        udelay(100);

        if (tg3_flag(tp, USING_MSIX) && tp->irq_cnt > 1) {
                val = tr32(MSGINT_MODE);
                val |= MSGINT_MODE_MULTIVEC_EN | MSGINT_MODE_ENABLE;
                if (!tg3_flag(tp, 1SHOT_MSI))
                        val |= MSGINT_MODE_ONE_SHOT_DISABLE;
                tw32(MSGINT_MODE, val);
        }

        if (!tg3_flag(tp, 5705_PLUS)) {
                tw32_f(DMAC_MODE, DMAC_MODE_ENABLE);
                udelay(40);
        }

        val = (WDMAC_MODE_ENABLE | WDMAC_MODE_TGTABORT_ENAB |
               WDMAC_MODE_MSTABORT_ENAB | WDMAC_MODE_PARITYERR_ENAB |
               WDMAC_MODE_ADDROFLOW_ENAB | WDMAC_MODE_FIFOOFLOW_ENAB |
               WDMAC_MODE_FIFOURUN_ENAB | WDMAC_MODE_FIFOOREAD_ENAB |
               WDMAC_MODE_LNGREAD_ENAB);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705 &&
            tp->pci_chip_rev_id != CHIPREV_ID_5705_A0) {
                if (tg3_flag(tp, TSO_CAPABLE) &&
                    (tp->pci_chip_rev_id == CHIPREV_ID_5705_A1 ||
                     tp->pci_chip_rev_id == CHIPREV_ID_5705_A2)) {
                        /* nothing */
                } else if (!(tr32(TG3PCI_PCISTATE) & PCISTATE_BUS_SPEED_HIGH) &&
                           !tg3_flag(tp, IS_5788)) {
                        val |= WDMAC_MODE_RX_ACCEL;
                }
        }

        /* Enable host coalescing bug fix */
        if (tg3_flag(tp, 5755_PLUS))
                val |= WDMAC_MODE_STATUS_TAG_FIX;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785)
                val |= WDMAC_MODE_BURST_ALL_DATA;

        tw32_f(WDMAC_MODE, val);
        udelay(40);

        if (tg3_flag(tp, PCIX_MODE)) {
                u16 pcix_cmd;

                pci_read_config_word(tp->pdev, tp->pcix_cap + PCI_X_CMD,
                                     &pcix_cmd);
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703) {
                        pcix_cmd &= ~PCI_X_CMD_MAX_READ;
                        pcix_cmd |= PCI_X_CMD_READ_2K;
                } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704) {
                        pcix_cmd &= ~(PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ);
                        pcix_cmd |= PCI_X_CMD_READ_2K;
                }
                pci_write_config_word(tp->pdev, tp->pcix_cap + PCI_X_CMD,
                                      pcix_cmd);
        }

        tw32_f(RDMAC_MODE, rdmac_mode);
        udelay(40);

        tw32(RCVDCC_MODE, RCVDCC_MODE_ENABLE | RCVDCC_MODE_ATTN_ENABLE);
        if (!tg3_flag(tp, 5705_PLUS))
                tw32(MBFREE_MODE, MBFREE_MODE_ENABLE);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761)
                tw32(SNDDATAC_MODE,
                     SNDDATAC_MODE_ENABLE | SNDDATAC_MODE_CDELAY);
        else
                tw32(SNDDATAC_MODE, SNDDATAC_MODE_ENABLE);

        tw32(SNDBDC_MODE, SNDBDC_MODE_ENABLE | SNDBDC_MODE_ATTN_ENABLE);
        tw32(RCVBDI_MODE, RCVBDI_MODE_ENABLE | RCVBDI_MODE_RCB_ATTN_ENAB);
        val = RCVDBDI_MODE_ENABLE | RCVDBDI_MODE_INV_RING_SZ;
        if (tg3_flag(tp, LRG_PROD_RING_CAP))
                val |= RCVDBDI_MODE_LRG_RING_SZ;
        tw32(RCVDBDI_MODE, val);
        tw32(SNDDATAI_MODE, SNDDATAI_MODE_ENABLE);
        if (tg3_flag(tp, HW_TSO_1) ||
            tg3_flag(tp, HW_TSO_2) ||
            tg3_flag(tp, HW_TSO_3))
                tw32(SNDDATAI_MODE, SNDDATAI_MODE_ENABLE | 0x8);
        val = SNDBDI_MODE_ENABLE | SNDBDI_MODE_ATTN_ENABLE;
        if (tg3_flag(tp, ENABLE_TSS))
                val |= SNDBDI_MODE_MULTI_TXQ_EN;
        tw32(SNDBDI_MODE, val);
        tw32(SNDBDS_MODE, SNDBDS_MODE_ENABLE | SNDBDS_MODE_ATTN_ENABLE);

        if (tp->pci_chip_rev_id == CHIPREV_ID_5701_A0) {
                err = tg3_load_5701_a0_firmware_fix(tp);
                if (err)
                        return err;
        }

        if (tg3_flag(tp, TSO_CAPABLE)) {
                err = tg3_load_tso_firmware(tp);
                if (err)
                        return err;
        }

        tp->tx_mode = TX_MODE_ENABLE;

        if (tg3_flag(tp, 5755_PLUS) ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906)
                tp->tx_mode |= TX_MODE_MBUF_LOCKUP_FIX;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) {
                val = TX_MODE_JMB_FRM_LEN | TX_MODE_CNT_DN_MODE;
                tp->tx_mode &= ~val;
                tp->tx_mode |= tr32(MAC_TX_MODE) & val;
        }

        tw32_f(MAC_TX_MODE, tp->tx_mode);
        udelay(100);

        if (tg3_flag(tp, ENABLE_RSS)) {
                int i = 0;
                u32 reg = MAC_RSS_INDIR_TBL_0;

                if (tp->irq_cnt == 2) {
                        for (i = 0; i < TG3_RSS_INDIR_TBL_SIZE; i += 8) {
                                tw32(reg, 0x0);
                                reg += 4;
                        }
                } else {
                        u32 val;

                        while (i < TG3_RSS_INDIR_TBL_SIZE) {
                                val = i % (tp->irq_cnt - 1);
                                i++;
                                for (; i % 8; i++) {
                                        val <<= 4;
                                        val |= (i % (tp->irq_cnt - 1));
                                }
                                tw32(reg, val);
                                reg += 4;
                        }
                }

                /* Setup the "secret" hash key. */
                tw32(MAC_RSS_HASH_KEY_0, 0x5f865437);
                tw32(MAC_RSS_HASH_KEY_1, 0xe4ac62cc);
                tw32(MAC_RSS_HASH_KEY_2, 0x50103a45);
                tw32(MAC_RSS_HASH_KEY_3, 0x36621985);
                tw32(MAC_RSS_HASH_KEY_4, 0xbf14c0e8);
                tw32(MAC_RSS_HASH_KEY_5, 0x1bc27a1e);
                tw32(MAC_RSS_HASH_KEY_6, 0x84f4b556);
                tw32(MAC_RSS_HASH_KEY_7, 0x094ea6fe);
                tw32(MAC_RSS_HASH_KEY_8, 0x7dda01e7);
                tw32(MAC_RSS_HASH_KEY_9, 0xc04d7481);
        }

        tp->rx_mode = RX_MODE_ENABLE;
        if (tg3_flag(tp, 5755_PLUS))
                tp->rx_mode |= RX_MODE_IPV6_CSUM_ENABLE;

        if (tg3_flag(tp, ENABLE_RSS))
                tp->rx_mode |= RX_MODE_RSS_ENABLE |
                               RX_MODE_RSS_ITBL_HASH_BITS_7 |
                               RX_MODE_RSS_IPV6_HASH_EN |
                               RX_MODE_RSS_TCP_IPV6_HASH_EN |
                               RX_MODE_RSS_IPV4_HASH_EN |
                               RX_MODE_RSS_TCP_IPV4_HASH_EN;

        tw32_f(MAC_RX_MODE, tp->rx_mode);
        udelay(10);

        tw32(MAC_LED_CTRL, tp->led_ctrl);

        tw32(MAC_MI_STAT, MAC_MI_STAT_LNKSTAT_ATTN_ENAB);
        if (tp->phy_flags & TG3_PHYFLG_PHY_SERDES) {
                tw32_f(MAC_RX_MODE, RX_MODE_RESET);
                udelay(10);
        }
        tw32_f(MAC_RX_MODE, tp->rx_mode);
        udelay(10);

        if (tp->phy_flags & TG3_PHYFLG_PHY_SERDES) {
                if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704) &&
                        !(tp->phy_flags & TG3_PHYFLG_SERDES_PREEMPHASIS)) {
                        /* Set drive transmission level to 1.2V  */
                        /* only if the signal pre-emphasis bit is not set  */
                        val = tr32(MAC_SERDES_CFG);
                        val &= 0xfffff000;
                        val |= 0x880;
                        tw32(MAC_SERDES_CFG, val);
                }
                if (tp->pci_chip_rev_id == CHIPREV_ID_5703_A1)
                        tw32(MAC_SERDES_CFG, 0x616000);
        }

        /* Prevent chip from dropping frames when flow control
         * is enabled.
         */
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765)
                val = 1;
        else
                val = 2;
        tw32_f(MAC_LOW_WMARK_MAX_RX_FRAME, val);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 &&
            (tp->phy_flags & TG3_PHYFLG_PHY_SERDES)) {
                /* Use hardware link auto-negotiation */
                tg3_flag_set(tp, HW_AUTONEG);
        }

        if ((tp->phy_flags & TG3_PHYFLG_MII_SERDES) &&
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714) {
                u32 tmp;

                tmp = tr32(SERDES_RX_CTRL);
                tw32(SERDES_RX_CTRL, tmp | SERDES_RX_SIG_DETECT);
                tp->grc_local_ctrl &= ~GRC_LCLCTRL_USE_EXT_SIG_DETECT;
                tp->grc_local_ctrl |= GRC_LCLCTRL_USE_SIG_DETECT;
                tw32(GRC_LOCAL_CTRL, tp->grc_local_ctrl);
        }

        if (!tg3_flag(tp, USE_PHYLIB)) {
                if (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER) {
                        tp->phy_flags &= ~TG3_PHYFLG_IS_LOW_POWER;
                        tp->link_config.speed = tp->link_config.orig_speed;
                        tp->link_config.duplex = tp->link_config.orig_duplex;
                        tp->link_config.autoneg = tp->link_config.orig_autoneg;
                }

                err = tg3_setup_phy(tp, 0);
                if (err)
                        return err;

                if (!(tp->phy_flags & TG3_PHYFLG_PHY_SERDES) &&
                    !(tp->phy_flags & TG3_PHYFLG_IS_FET)) {
                        u32 tmp;

                        /* Clear CRC stats. */
                        if (!tg3_readphy(tp, MII_TG3_TEST1, &tmp)) {
                                tg3_writephy(tp, MII_TG3_TEST1,
                                             tmp | MII_TG3_TEST1_CRC_EN);
                                tg3_readphy(tp, MII_TG3_RXR_COUNTERS, &tmp);
                        }
                }
        }

        __tg3_set_rx_mode(tp->dev);

        /* Initialize receive rules. */
        tw32(MAC_RCV_RULE_0,  0xc2000000 & RCV_RULE_DISABLE_MASK);
        tw32(MAC_RCV_VALUE_0, 0xffffffff & RCV_RULE_DISABLE_MASK);
        tw32(MAC_RCV_RULE_1,  0x86000004 & RCV_RULE_DISABLE_MASK);
        tw32(MAC_RCV_VALUE_1, 0xffffffff & RCV_RULE_DISABLE_MASK);

        if (tg3_flag(tp, 5705_PLUS) && !tg3_flag(tp, 5780_CLASS))
                limit = 8;
        else
                limit = 16;
        if (tg3_flag(tp, ENABLE_ASF))
                limit -= 4;
        switch (limit) {
        case 16:
                tw32(MAC_RCV_RULE_15,  0); tw32(MAC_RCV_VALUE_15,  0);
        case 15:
                tw32(MAC_RCV_RULE_14,  0); tw32(MAC_RCV_VALUE_14,  0);
        case 14:
                tw32(MAC_RCV_RULE_13,  0); tw32(MAC_RCV_VALUE_13,  0);
        case 13:
                tw32(MAC_RCV_RULE_12,  0); tw32(MAC_RCV_VALUE_12,  0);
        case 12:
                tw32(MAC_RCV_RULE_11,  0); tw32(MAC_RCV_VALUE_11,  0);
        case 11:
                tw32(MAC_RCV_RULE_10,  0); tw32(MAC_RCV_VALUE_10,  0);
        case 10:
                tw32(MAC_RCV_RULE_9,  0); tw32(MAC_RCV_VALUE_9,  0);
        case 9:
                tw32(MAC_RCV_RULE_8,  0); tw32(MAC_RCV_VALUE_8,  0);
        case 8:
                tw32(MAC_RCV_RULE_7,  0); tw32(MAC_RCV_VALUE_7,  0);
        case 7:
                tw32(MAC_RCV_RULE_6,  0); tw32(MAC_RCV_VALUE_6,  0);
        case 6:
                tw32(MAC_RCV_RULE_5,  0); tw32(MAC_RCV_VALUE_5,  0);
        case 5:
                tw32(MAC_RCV_RULE_4,  0); tw32(MAC_RCV_VALUE_4,  0);
        case 4:
                /* tw32(MAC_RCV_RULE_3,  0); tw32(MAC_RCV_VALUE_3,  0); */
        case 3:
                /* tw32(MAC_RCV_RULE_2,  0); tw32(MAC_RCV_VALUE_2,  0); */
        case 2:
        case 1:

        default:
                break;
        }

        if (tg3_flag(tp, ENABLE_APE))
                /* Write our heartbeat update interval to APE. */
                tg3_ape_write32(tp, TG3_APE_HOST_HEARTBEAT_INT_MS,
                                APE_HOST_HEARTBEAT_INT_DISABLE);

        tg3_write_sig_post_reset(tp, RESET_KIND_INIT);

        return 0;
}

/* Called at device open time to get the chip ready for
 * packet processing.  Invoked with tp->lock held.
 */
static int tg3_init_hw(struct tg3 *tp, int reset_phy)
{
        tg3_switch_clocks(tp);

        tw32(TG3PCI_MEM_WIN_BASE_ADDR, 0);

        return tg3_reset_hw(tp, reset_phy);
}

#define TG3_STAT_ADD32(PSTAT, REG) \
do {    u32 __val = tr32(REG); \
        (PSTAT)->low += __val; \
        if ((PSTAT)->low < __val) \
                (PSTAT)->high += 1; \
} while (0)

static void tg3_periodic_fetch_stats(struct tg3 *tp)
{
        struct tg3_hw_stats *sp = tp->hw_stats;

        if (!netif_carrier_ok(tp->dev))
                return;

        TG3_STAT_ADD32(&sp->tx_octets, MAC_TX_STATS_OCTETS);
        TG3_STAT_ADD32(&sp->tx_collisions, MAC_TX_STATS_COLLISIONS);
        TG3_STAT_ADD32(&sp->tx_xon_sent, MAC_TX_STATS_XON_SENT);
        TG3_STAT_ADD32(&sp->tx_xoff_sent, MAC_TX_STATS_XOFF_SENT);
        TG3_STAT_ADD32(&sp->tx_mac_errors, MAC_TX_STATS_MAC_ERRORS);
        TG3_STAT_ADD32(&sp->tx_single_collisions, MAC_TX_STATS_SINGLE_COLLISIONS);
        TG3_STAT_ADD32(&sp->tx_mult_collisions, MAC_TX_STATS_MULT_COLLISIONS);
        TG3_STAT_ADD32(&sp->tx_deferred, MAC_TX_STATS_DEFERRED);
        TG3_STAT_ADD32(&sp->tx_excessive_collisions, MAC_TX_STATS_EXCESSIVE_COL);
        TG3_STAT_ADD32(&sp->tx_late_collisions, MAC_TX_STATS_LATE_COL);
        TG3_STAT_ADD32(&sp->tx_ucast_packets, MAC_TX_STATS_UCAST);
        TG3_STAT_ADD32(&sp->tx_mcast_packets, MAC_TX_STATS_MCAST);
        TG3_STAT_ADD32(&sp->tx_bcast_packets, MAC_TX_STATS_BCAST);

        TG3_STAT_ADD32(&sp->rx_octets, MAC_RX_STATS_OCTETS);
        TG3_STAT_ADD32(&sp->rx_fragments, MAC_RX_STATS_FRAGMENTS);
        TG3_STAT_ADD32(&sp->rx_ucast_packets, MAC_RX_STATS_UCAST);
        TG3_STAT_ADD32(&sp->rx_mcast_packets, MAC_RX_STATS_MCAST);
        TG3_STAT_ADD32(&sp->rx_bcast_packets, MAC_RX_STATS_BCAST);
        TG3_STAT_ADD32(&sp->rx_fcs_errors, MAC_RX_STATS_FCS_ERRORS);
        TG3_STAT_ADD32(&sp->rx_align_errors, MAC_RX_STATS_ALIGN_ERRORS);
        TG3_STAT_ADD32(&sp->rx_xon_pause_rcvd, MAC_RX_STATS_XON_PAUSE_RECVD);
        TG3_STAT_ADD32(&sp->rx_xoff_pause_rcvd, MAC_RX_STATS_XOFF_PAUSE_RECVD);
        TG3_STAT_ADD32(&sp->rx_mac_ctrl_rcvd, MAC_RX_STATS_MAC_CTRL_RECVD);
        TG3_STAT_ADD32(&sp->rx_xoff_entered, MAC_RX_STATS_XOFF_ENTERED);
        TG3_STAT_ADD32(&sp->rx_frame_too_long_errors, MAC_RX_STATS_FRAME_TOO_LONG);
        TG3_STAT_ADD32(&sp->rx_jabbers, MAC_RX_STATS_JABBERS);
        TG3_STAT_ADD32(&sp->rx_undersize_packets, MAC_RX_STATS_UNDERSIZE);

        TG3_STAT_ADD32(&sp->rxbds_empty, RCVLPC_NO_RCV_BD_CNT);
        if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5717 &&
            tp->pci_chip_rev_id != CHIPREV_ID_5719_A0 &&
            tp->pci_chip_rev_id != CHIPREV_ID_5720_A0) {
                TG3_STAT_ADD32(&sp->rx_discards, RCVLPC_IN_DISCARDS_CNT);
        } else {
                u32 val = tr32(HOSTCC_FLOW_ATTN);
                val = (val & HOSTCC_FLOW_ATTN_MBUF_LWM) ? 1 : 0;
                if (val) {
                        tw32(HOSTCC_FLOW_ATTN, HOSTCC_FLOW_ATTN_MBUF_LWM);
                        sp->rx_discards.low += val;
                        if (sp->rx_discards.low < val)
                                sp->rx_discards.high += 1;
                }
                sp->mbuf_lwm_thresh_hit = sp->rx_discards;
        }
        TG3_STAT_ADD32(&sp->rx_errors, RCVLPC_IN_ERRORS_CNT);
}

static void tg3_chk_missed_msi(struct tg3 *tp)
{
        u32 i;

        for (i = 0; i < tp->irq_cnt; i++) {
                struct tg3_napi *tnapi = &tp->napi[i];

                if (tg3_has_work(tnapi)) {
                        if (tnapi->last_rx_cons == tnapi->rx_rcb_ptr &&
                            tnapi->last_tx_cons == tnapi->tx_cons) {
                                if (tnapi->chk_msi_cnt < 1) {
                                        tnapi->chk_msi_cnt++;
                                        return;
                                }
                                tg3_msi(0, tnapi);
                        }
                }
                tnapi->chk_msi_cnt = 0;
                tnapi->last_rx_cons = tnapi->rx_rcb_ptr;
                tnapi->last_tx_cons = tnapi->tx_cons;
        }
}

static void tg3_timer(unsigned long __opaque)
{
        struct tg3 *tp = (struct tg3 *) __opaque;

        if (tp->irq_sync || tg3_flag(tp, RESET_TASK_PENDING))
                goto restart_timer;

        spin_lock(&tp->lock);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765)
                tg3_chk_missed_msi(tp);

        if (!tg3_flag(tp, TAGGED_STATUS)) {
                /* All of this garbage is because when using non-tagged
                 * IRQ status the mailbox/status_block protocol the chip
                 * uses with the cpu is race prone.
                 */
                if (tp->napi[0].hw_status->status & SD_STATUS_UPDATED) {
                        tw32(GRC_LOCAL_CTRL,
                             tp->grc_local_ctrl | GRC_LCLCTRL_SETINT);
                } else {
                        tw32(HOSTCC_MODE, tp->coalesce_mode |
                             HOSTCC_MODE_ENABLE | HOSTCC_MODE_NOW);
                }

                if (!(tr32(WDMAC_MODE) & WDMAC_MODE_ENABLE)) {
                        spin_unlock(&tp->lock);
                        tg3_reset_task_schedule(tp);
                        goto restart_timer;
                }
        }

        /* This part only runs once per second. */
        if (!--tp->timer_counter) {
                if (tg3_flag(tp, 5705_PLUS))
                        tg3_periodic_fetch_stats(tp);

                if (tp->setlpicnt && !--tp->setlpicnt)
                        tg3_phy_eee_enable(tp);

                if (tg3_flag(tp, USE_LINKCHG_REG)) {
                        u32 mac_stat;
                        int phy_event;

                        mac_stat = tr32(MAC_STATUS);

                        phy_event = 0;
                        if (tp->phy_flags & TG3_PHYFLG_USE_MI_INTERRUPT) {
                                if (mac_stat & MAC_STATUS_MI_INTERRUPT)
                                        phy_event = 1;
                        } else if (mac_stat & MAC_STATUS_LNKSTATE_CHANGED)
                                phy_event = 1;

                        if (phy_event)
                                tg3_setup_phy(tp, 0);
                } else if (tg3_flag(tp, POLL_SERDES)) {
                        u32 mac_stat = tr32(MAC_STATUS);
                        int need_setup = 0;

                        if (netif_carrier_ok(tp->dev) &&
                            (mac_stat & MAC_STATUS_LNKSTATE_CHANGED)) {
                                need_setup = 1;
                        }
                        if (!netif_carrier_ok(tp->dev) &&
                            (mac_stat & (MAC_STATUS_PCS_SYNCED |
                                         MAC_STATUS_SIGNAL_DET))) {
                                need_setup = 1;
                        }
                        if (need_setup) {
                                if (!tp->serdes_counter) {
                                        tw32_f(MAC_MODE,
                                             (tp->mac_mode &
                                              ~MAC_MODE_PORT_MODE_MASK));
                                        udelay(40);
                                        tw32_f(MAC_MODE, tp->mac_mode);
                                        udelay(40);
                                }
                                tg3_setup_phy(tp, 0);
                        }
                } else if ((tp->phy_flags & TG3_PHYFLG_MII_SERDES) &&
                           tg3_flag(tp, 5780_CLASS)) {
                        tg3_serdes_parallel_detect(tp);
                }

                tp->timer_counter = tp->timer_multiplier;
        }

        /* Heartbeat is only sent once every 2 seconds.
         *
         * The heartbeat is to tell the ASF firmware that the host
         * driver is still alive.  In the event that the OS crashes,
         * ASF needs to reset the hardware to free up the FIFO space
         * that may be filled with rx packets destined for the host.
         * If the FIFO is full, ASF will no longer function properly.
         *
         * Unintended resets have been reported on real time kernels
         * where the timer doesn't run on time.  Netpoll will also have
         * same problem.
         *
         * The new FWCMD_NICDRV_ALIVE3 command tells the ASF firmware
         * to check the ring condition when the heartbeat is expiring
         * before doing the reset.  This will prevent most unintended
         * resets.
         */
        if (!--tp->asf_counter) {
                if (tg3_flag(tp, ENABLE_ASF) && !tg3_flag(tp, ENABLE_APE)) {
                        tg3_wait_for_event_ack(tp);

                        tg3_write_mem(tp, NIC_SRAM_FW_CMD_MBOX,
                                      FWCMD_NICDRV_ALIVE3);
                        tg3_write_mem(tp, NIC_SRAM_FW_CMD_LEN_MBOX, 4);
                        tg3_write_mem(tp, NIC_SRAM_FW_CMD_DATA_MBOX,
                                      TG3_FW_UPDATE_TIMEOUT_SEC);

                        tg3_generate_fw_event(tp);
                }
                tp->asf_counter = tp->asf_multiplier;
        }

        spin_unlock(&tp->lock);

restart_timer:
        tp->timer.expires = jiffies + tp->timer_offset;
        add_timer(&tp->timer);
}

static int tg3_request_irq(struct tg3 *tp, int irq_num)
{
        irq_handler_t fn;
        unsigned long flags;
        char *name;
        struct tg3_napi *tnapi = &tp->napi[irq_num];

        if (tp->irq_cnt == 1)
                name = tp->dev->name;
        else {
                name = &tnapi->irq_lbl[0];
                snprintf(name, IFNAMSIZ, "%s-%d", tp->dev->name, irq_num);
                name[IFNAMSIZ-1] = 0;
        }

        if (tg3_flag(tp, USING_MSI) || tg3_flag(tp, USING_MSIX)) {
                fn = tg3_msi;
                if (tg3_flag(tp, 1SHOT_MSI))
                        fn = tg3_msi_1shot;
                flags = 0;
        } else {
                fn = tg3_interrupt;
                if (tg3_flag(tp, TAGGED_STATUS))
                        fn = tg3_interrupt_tagged;
                flags = IRQF_SHARED;
        }

        return request_irq(tnapi->irq_vec, fn, flags, name, tnapi);
}

static int tg3_test_interrupt(struct tg3 *tp)
{
        struct tg3_napi *tnapi = &tp->napi[0];
        struct net_device *dev = tp->dev;
        int err, i, intr_ok = 0;
        u32 val;

        if (!netif_running(dev))
                return -ENODEV;

        tg3_disable_ints(tp);

        free_irq(tnapi->irq_vec, tnapi);

        /*
         * Turn off MSI one shot mode.  Otherwise this test has no
         * observable way to know whether the interrupt was delivered.
         */
        if (tg3_flag(tp, 57765_PLUS)) {
                val = tr32(MSGINT_MODE) | MSGINT_MODE_ONE_SHOT_DISABLE;
                tw32(MSGINT_MODE, val);
        }

        err = request_irq(tnapi->irq_vec, tg3_test_isr,
                          IRQF_SHARED | IRQF_SAMPLE_RANDOM, dev->name, tnapi);
        if (err)
                return err;

        tnapi->hw_status->status &= ~SD_STATUS_UPDATED;
        tg3_enable_ints(tp);

        tw32_f(HOSTCC_MODE, tp->coalesce_mode | HOSTCC_MODE_ENABLE |
               tnapi->coal_now);

        for (i = 0; i < 5; i++) {
                u32 int_mbox, misc_host_ctrl;

                int_mbox = tr32_mailbox(tnapi->int_mbox);
                misc_host_ctrl = tr32(TG3PCI_MISC_HOST_CTRL);

                if ((int_mbox != 0) ||
                    (misc_host_ctrl & MISC_HOST_CTRL_MASK_PCI_INT)) {
                        intr_ok = 1;
                        break;
                }

                if (tg3_flag(tp, 57765_PLUS) &&
                    tnapi->hw_status->status_tag != tnapi->last_tag)
                        tw32_mailbox_f(tnapi->int_mbox, tnapi->last_tag << 24);

                msleep(10);
        }

        tg3_disable_ints(tp);

        free_irq(tnapi->irq_vec, tnapi);

        err = tg3_request_irq(tp, 0);

        if (err)
                return err;

        if (intr_ok) {
                /* Reenable MSI one shot mode. */
                if (tg3_flag(tp, 57765_PLUS) && tg3_flag(tp, 1SHOT_MSI)) {
                        val = tr32(MSGINT_MODE) & ~MSGINT_MODE_ONE_SHOT_DISABLE;
                        tw32(MSGINT_MODE, val);
                }
                return 0;
        }

        return -EIO;
}

/* Returns 0 if MSI test succeeds or MSI test fails and INTx mode is
 * successfully restored
 */
static int tg3_test_msi(struct tg3 *tp)
{
        int err;
        u16 pci_cmd;

        if (!tg3_flag(tp, USING_MSI))
                return 0;

        /* Turn off SERR reporting in case MSI terminates with Master
         * Abort.
         */
        pci_read_config_word(tp->pdev, PCI_COMMAND, &pci_cmd);
        pci_write_config_word(tp->pdev, PCI_COMMAND,
                              pci_cmd & ~PCI_COMMAND_SERR);

        err = tg3_test_interrupt(tp);

        pci_write_config_word(tp->pdev, PCI_COMMAND, pci_cmd);

        if (!err)
                return 0;

        /* other failures */
        if (err != -EIO)
                return err;

        /* MSI test failed, go back to INTx mode */
        netdev_warn(tp->dev, "No interrupt was generated using MSI. Switching "
                    "to INTx mode. Please report this failure to the PCI "
                    "maintainer and include system chipset information\n");

        free_irq(tp->napi[0].irq_vec, &tp->napi[0]);

        pci_disable_msi(tp->pdev);

        tg3_flag_clear(tp, USING_MSI);
        tp->napi[0].irq_vec = tp->pdev->irq;

        err = tg3_request_irq(tp, 0);
        if (err)
                return err;

        /* Need to reset the chip because the MSI cycle may have terminated
         * with Master Abort.
         */
        tg3_full_lock(tp, 1);

        tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
        err = tg3_init_hw(tp, 1);

        tg3_full_unlock(tp);

        if (err)
                free_irq(tp->napi[0].irq_vec, &tp->napi[0]);

        return err;
}

static int tg3_request_firmware(struct tg3 *tp)
{
        const __be32 *fw_data;

        if (request_firmware(&tp->fw, tp->fw_needed, &tp->pdev->dev)) {
                netdev_err(tp->dev, "Failed to load firmware \"%s\"\n",
                           tp->fw_needed);
                return -ENOENT;
        }

        fw_data = (void *)tp->fw->data;

        /* Firmware blob starts with version numbers, followed by
         * start address and _full_ length including BSS sections
         * (which must be longer than the actual data, of course
         */

        tp->fw_len = be32_to_cpu(fw_data[2]);   /* includes bss */
        if (tp->fw_len < (tp->fw->size - 12)) {
                netdev_err(tp->dev, "bogus length %d in \"%s\"\n",
                           tp->fw_len, tp->fw_needed);
                release_firmware(tp->fw);
                tp->fw = NULL;
                return -EINVAL;
        }

        /* We no longer need firmware; we have it. */
        tp->fw_needed = NULL;
        return 0;
}

static bool tg3_enable_msix(struct tg3 *tp)
{
        int i, rc, cpus = num_online_cpus();
        struct msix_entry msix_ent[tp->irq_max];

        if (cpus == 1)
                /* Just fallback to the simpler MSI mode. */
                return false;

        /*
         * We want as many rx rings enabled as there are cpus.
         * The first MSIX vector only deals with link interrupts, etc,
         * so we add one to the number of vectors we are requesting.
         */
        tp->irq_cnt = min_t(unsigned, cpus + 1, tp->irq_max);

        for (i = 0; i < tp->irq_max; i++) {
                msix_ent[i].entry  = i;
                msix_ent[i].vector = 0;
        }

        rc = pci_enable_msix(tp->pdev, msix_ent, tp->irq_cnt);
        if (rc < 0) {
                return false;
        } else if (rc != 0) {
                if (pci_enable_msix(tp->pdev, msix_ent, rc))
                        return false;
                netdev_notice(tp->dev, "Requested %d MSI-X vectors, received %d\n",
                              tp->irq_cnt, rc);
                tp->irq_cnt = rc;
        }

        for (i = 0; i < tp->irq_max; i++)
                tp->napi[i].irq_vec = msix_ent[i].vector;

        netif_set_real_num_tx_queues(tp->dev, 1);
        rc = tp->irq_cnt > 1 ? tp->irq_cnt - 1 : 1;
        if (netif_set_real_num_rx_queues(tp->dev, rc)) {
                pci_disable_msix(tp->pdev);
                return false;
        }

        if (tp->irq_cnt > 1) {
                tg3_flag_set(tp, ENABLE_RSS);

                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) {
                        tg3_flag_set(tp, ENABLE_TSS);
                        netif_set_real_num_tx_queues(tp->dev, tp->irq_cnt - 1);
                }
        }

        return true;
}

static void tg3_ints_init(struct tg3 *tp)
{
        if ((tg3_flag(tp, SUPPORT_MSI) || tg3_flag(tp, SUPPORT_MSIX)) &&
            !tg3_flag(tp, TAGGED_STATUS)) {
                /* All MSI supporting chips should support tagged
                 * status.  Assert that this is the case.
                 */
                netdev_warn(tp->dev,
                            "MSI without TAGGED_STATUS? Not using MSI\n");
                goto defcfg;
        }

        if (tg3_flag(tp, SUPPORT_MSIX) && tg3_enable_msix(tp))
                tg3_flag_set(tp, USING_MSIX);
        else if (tg3_flag(tp, SUPPORT_MSI) && pci_enable_msi(tp->pdev) == 0)
                tg3_flag_set(tp, USING_MSI);

        if (tg3_flag(tp, USING_MSI) || tg3_flag(tp, USING_MSIX)) {
                u32 msi_mode = tr32(MSGINT_MODE);
                if (tg3_flag(tp, USING_MSIX) && tp->irq_cnt > 1)
                        msi_mode |= MSGINT_MODE_MULTIVEC_EN;
                if (!tg3_flag(tp, 1SHOT_MSI))
                        msi_mode |= MSGINT_MODE_ONE_SHOT_DISABLE;
                tw32(MSGINT_MODE, msi_mode | MSGINT_MODE_ENABLE);
        }
defcfg:
        if (!tg3_flag(tp, USING_MSIX)) {
                tp->irq_cnt = 1;
                tp->napi[0].irq_vec = tp->pdev->irq;
                netif_set_real_num_tx_queues(tp->dev, 1);
                netif_set_real_num_rx_queues(tp->dev, 1);
        }
}

static void tg3_ints_fini(struct tg3 *tp)
{
        if (tg3_flag(tp, USING_MSIX))
                pci_disable_msix(tp->pdev);
        else if (tg3_flag(tp, USING_MSI))
                pci_disable_msi(tp->pdev);
        tg3_flag_clear(tp, USING_MSI);
        tg3_flag_clear(tp, USING_MSIX);
        tg3_flag_clear(tp, ENABLE_RSS);
        tg3_flag_clear(tp, ENABLE_TSS);
}

static int tg3_open(struct net_device *dev)
{
        struct tg3 *tp = netdev_priv(dev);
        int i, err;

        if (tp->fw_needed) {
                err = tg3_request_firmware(tp);
                if (tp->pci_chip_rev_id == CHIPREV_ID_5701_A0) {
                        if (err)
                                return err;
                } else if (err) {
                        netdev_warn(tp->dev, "TSO capability disabled\n");
                        tg3_flag_clear(tp, TSO_CAPABLE);
                } else if (!tg3_flag(tp, TSO_CAPABLE)) {
                        netdev_notice(tp->dev, "TSO capability restored\n");
                        tg3_flag_set(tp, TSO_CAPABLE);
                }
        }

        netif_carrier_off(tp->dev);

        err = tg3_power_up(tp);
        if (err)
                return err;

        tg3_full_lock(tp, 0);

        tg3_disable_ints(tp);
        tg3_flag_clear(tp, INIT_COMPLETE);

        tg3_full_unlock(tp);

        /*
         * Setup interrupts first so we know how
         * many NAPI resources to allocate
         */
        tg3_ints_init(tp);

        /* The placement of this call is tied
         * to the setup and use of Host TX descriptors.
         */
        err = tg3_alloc_consistent(tp);
        if (err)
                goto err_out1;

        tg3_napi_init(tp);

        tg3_napi_enable(tp);

        for (i = 0; i < tp->irq_cnt; i++) {
                struct tg3_napi *tnapi = &tp->napi[i];
                err = tg3_request_irq(tp, i);
                if (err) {
                        for (i--; i >= 0; i--) {
                                tnapi = &tp->napi[i];
                                free_irq(tnapi->irq_vec, tnapi);
                        }
                        goto err_out2;
                }
        }

        tg3_full_lock(tp, 0);

        err = tg3_init_hw(tp, 1);
        if (err) {
                tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
                tg3_free_rings(tp);
        } else {
                if (tg3_flag(tp, TAGGED_STATUS) &&
                        GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5717 &&
                        GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_57765)
                        tp->timer_offset = HZ;
                else
                        tp->timer_offset = HZ / 10;

                BUG_ON(tp->timer_offset > HZ);
                tp->timer_counter = tp->timer_multiplier =
                        (HZ / tp->timer_offset);
                tp->asf_counter = tp->asf_multiplier =
                        ((HZ / tp->timer_offset) * 2);

                init_timer(&tp->timer);
                tp->timer.expires = jiffies + tp->timer_offset;
                tp->timer.data = (unsigned long) tp;
                tp->timer.function = tg3_timer;
        }

        tg3_full_unlock(tp);

        if (err)
                goto err_out3;

        if (tg3_flag(tp, USING_MSI)) {
                err = tg3_test_msi(tp);

                if (err) {
                        tg3_full_lock(tp, 0);
                        tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
                        tg3_free_rings(tp);
                        tg3_full_unlock(tp);

                        goto err_out2;
                }

                if (!tg3_flag(tp, 57765_PLUS) && tg3_flag(tp, USING_MSI)) {
                        u32 val = tr32(PCIE_TRANSACTION_CFG);

                        tw32(PCIE_TRANSACTION_CFG,
                             val | PCIE_TRANS_CFG_1SHOT_MSI);
                }
        }

        tg3_phy_start(tp);

        tg3_full_lock(tp, 0);

        add_timer(&tp->timer);
        tg3_flag_set(tp, INIT_COMPLETE);
        tg3_enable_ints(tp);

        tg3_full_unlock(tp);

        netif_tx_start_all_queues(dev);

        /*
         * Reset loopback feature if it was turned on while the device was down
         * make sure that it's installed properly now.
         */
        if (dev->features & NETIF_F_LOOPBACK)
                tg3_set_loopback(dev, dev->features);

        return 0;

err_out3:
        for (i = tp->irq_cnt - 1; i >= 0; i--) {
                struct tg3_napi *tnapi = &tp->napi[i];
                free_irq(tnapi->irq_vec, tnapi);
        }

err_out2:
        tg3_napi_disable(tp);
        tg3_napi_fini(tp);
        tg3_free_consistent(tp);

err_out1:
        tg3_ints_fini(tp);
        tg3_frob_aux_power(tp, false);
        pci_set_power_state(tp->pdev, PCI_D3hot);
        return err;
}

static struct rtnl_link_stats64 *tg3_get_stats64(struct net_device *,
                                                 struct rtnl_link_stats64 *);
static struct tg3_ethtool_stats *tg3_get_estats(struct tg3 *);

static int tg3_close(struct net_device *dev)
{
        int i;
        struct tg3 *tp = netdev_priv(dev);

        tg3_napi_disable(tp);
        tg3_reset_task_cancel(tp);

        netif_tx_stop_all_queues(dev);

        del_timer_sync(&tp->timer);

        tg3_phy_stop(tp);

        tg3_full_lock(tp, 1);

        tg3_disable_ints(tp);

        tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
        tg3_free_rings(tp);
        tg3_flag_clear(tp, INIT_COMPLETE);

        tg3_full_unlock(tp);

        for (i = tp->irq_cnt - 1; i >= 0; i--) {
                struct tg3_napi *tnapi = &tp->napi[i];
                free_irq(tnapi->irq_vec, tnapi);
        }

        tg3_ints_fini(tp);

        tg3_get_stats64(tp->dev, &tp->net_stats_prev);

        memcpy(&tp->estats_prev, tg3_get_estats(tp),
               sizeof(tp->estats_prev));

        tg3_napi_fini(tp);

        tg3_free_consistent(tp);

        tg3_power_down(tp);

        netif_carrier_off(tp->dev);

        return 0;
}

static inline u64 get_stat64(tg3_stat64_t *val)
{
       return ((u64)val->high << 32) | ((u64)val->low);
}

static u64 calc_crc_errors(struct tg3 *tp)
{
        struct tg3_hw_stats *hw_stats = tp->hw_stats;

        if (!(tp->phy_flags & TG3_PHYFLG_PHY_SERDES) &&
            (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
             GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701)) {
                u32 val;

                spin_lock_bh(&tp->lock);
                if (!tg3_readphy(tp, MII_TG3_TEST1, &val)) {
                        tg3_writephy(tp, MII_TG3_TEST1,
                                     val | MII_TG3_TEST1_CRC_EN);
                        tg3_readphy(tp, MII_TG3_RXR_COUNTERS, &val);
                } else
                        val = 0;
                spin_unlock_bh(&tp->lock);

                tp->phy_crc_errors += val;

                return tp->phy_crc_errors;
        }

        return get_stat64(&hw_stats->rx_fcs_errors);
}

#define ESTAT_ADD(member) \
        estats->member =        old_estats->member + \
                                get_stat64(&hw_stats->member)

static struct tg3_ethtool_stats *tg3_get_estats(struct tg3 *tp)
{
        struct tg3_ethtool_stats *estats = &tp->estats;
        struct tg3_ethtool_stats *old_estats = &tp->estats_prev;
        struct tg3_hw_stats *hw_stats = tp->hw_stats;

        if (!hw_stats)
                return old_estats;

        ESTAT_ADD(rx_octets);
        ESTAT_ADD(rx_fragments);
        ESTAT_ADD(rx_ucast_packets);
        ESTAT_ADD(rx_mcast_packets);
        ESTAT_ADD(rx_bcast_packets);
        ESTAT_ADD(rx_fcs_errors);
        ESTAT_ADD(rx_align_errors);
        ESTAT_ADD(rx_xon_pause_rcvd);
        ESTAT_ADD(rx_xoff_pause_rcvd);
        ESTAT_ADD(rx_mac_ctrl_rcvd);
        ESTAT_ADD(rx_xoff_entered);
        ESTAT_ADD(rx_frame_too_long_errors);
        ESTAT_ADD(rx_jabbers);
        ESTAT_ADD(rx_undersize_packets);
        ESTAT_ADD(rx_in_length_errors);
        ESTAT_ADD(rx_out_length_errors);
        ESTAT_ADD(rx_64_or_less_octet_packets);
        ESTAT_ADD(rx_65_to_127_octet_packets);
        ESTAT_ADD(rx_128_to_255_octet_packets);
        ESTAT_ADD(rx_256_to_511_octet_packets);
        ESTAT_ADD(rx_512_to_1023_octet_packets);
        ESTAT_ADD(rx_1024_to_1522_octet_packets);
        ESTAT_ADD(rx_1523_to_2047_octet_packets);
        ESTAT_ADD(rx_2048_to_4095_octet_packets);
        ESTAT_ADD(rx_4096_to_8191_octet_packets);
        ESTAT_ADD(rx_8192_to_9022_octet_packets);

        ESTAT_ADD(tx_octets);
        ESTAT_ADD(tx_collisions);
        ESTAT_ADD(tx_xon_sent);
        ESTAT_ADD(tx_xoff_sent);
        ESTAT_ADD(tx_flow_control);
        ESTAT_ADD(tx_mac_errors);
        ESTAT_ADD(tx_single_collisions);
        ESTAT_ADD(tx_mult_collisions);
        ESTAT_ADD(tx_deferred);
        ESTAT_ADD(tx_excessive_collisions);
        ESTAT_ADD(tx_late_collisions);
        ESTAT_ADD(tx_collide_2times);
        ESTAT_ADD(tx_collide_3times);
        ESTAT_ADD(tx_collide_4times);
        ESTAT_ADD(tx_collide_5times);
        ESTAT_ADD(tx_collide_6times);
        ESTAT_ADD(tx_collide_7times);
        ESTAT_ADD(tx_collide_8times);
        ESTAT_ADD(tx_collide_9times);
        ESTAT_ADD(tx_collide_10times);
        ESTAT_ADD(tx_collide_11times);
        ESTAT_ADD(tx_collide_12times);
        ESTAT_ADD(tx_collide_13times);
        ESTAT_ADD(tx_collide_14times);
        ESTAT_ADD(tx_collide_15times);
        ESTAT_ADD(tx_ucast_packets);
        ESTAT_ADD(tx_mcast_packets);
        ESTAT_ADD(tx_bcast_packets);
        ESTAT_ADD(tx_carrier_sense_errors);
        ESTAT_ADD(tx_discards);
        ESTAT_ADD(tx_errors);

        ESTAT_ADD(dma_writeq_full);
        ESTAT_ADD(dma_write_prioq_full);
        ESTAT_ADD(rxbds_empty);
        ESTAT_ADD(rx_discards);
        ESTAT_ADD(rx_errors);
        ESTAT_ADD(rx_threshold_hit);

        ESTAT_ADD(dma_readq_full);
        ESTAT_ADD(dma_read_prioq_full);
        ESTAT_ADD(tx_comp_queue_full);

        ESTAT_ADD(ring_set_send_prod_index);
        ESTAT_ADD(ring_status_update);
        ESTAT_ADD(nic_irqs);
        ESTAT_ADD(nic_avoided_irqs);
        ESTAT_ADD(nic_tx_threshold_hit);

        ESTAT_ADD(mbuf_lwm_thresh_hit);

        return estats;
}

static struct rtnl_link_stats64 *tg3_get_stats64(struct net_device *dev,
                                                 struct rtnl_link_stats64 *stats)
{
        struct tg3 *tp = netdev_priv(dev);
        struct rtnl_link_stats64 *old_stats = &tp->net_stats_prev;
        struct tg3_hw_stats *hw_stats = tp->hw_stats;

        if (!hw_stats)
                return old_stats;

        stats->rx_packets = old_stats->rx_packets +
                get_stat64(&hw_stats->rx_ucast_packets) +
                get_stat64(&hw_stats->rx_mcast_packets) +
                get_stat64(&hw_stats->rx_bcast_packets);

        stats->tx_packets = old_stats->tx_packets +
                get_stat64(&hw_stats->tx_ucast_packets) +
                get_stat64(&hw_stats->tx_mcast_packets) +
                get_stat64(&hw_stats->tx_bcast_packets);

        stats->rx_bytes = old_stats->rx_bytes +
                get_stat64(&hw_stats->rx_octets);
        stats->tx_bytes = old_stats->tx_bytes +
                get_stat64(&hw_stats->tx_octets);

        stats->rx_errors = old_stats->rx_errors +
                get_stat64(&hw_stats->rx_errors);
        stats->tx_errors = old_stats->tx_errors +
                get_stat64(&hw_stats->tx_errors) +
                get_stat64(&hw_stats->tx_mac_errors) +
                get_stat64(&hw_stats->tx_carrier_sense_errors) +
                get_stat64(&hw_stats->tx_discards);

        stats->multicast = old_stats->multicast +
                get_stat64(&hw_stats->rx_mcast_packets);
        stats->collisions = old_stats->collisions +
                get_stat64(&hw_stats->tx_collisions);

        stats->rx_length_errors = old_stats->rx_length_errors +
                get_stat64(&hw_stats->rx_frame_too_long_errors) +
                get_stat64(&hw_stats->rx_undersize_packets);

        stats->rx_over_errors = old_stats->rx_over_errors +
                get_stat64(&hw_stats->rxbds_empty);
        stats->rx_frame_errors = old_stats->rx_frame_errors +
                get_stat64(&hw_stats->rx_align_errors);
        stats->tx_aborted_errors = old_stats->tx_aborted_errors +
                get_stat64(&hw_stats->tx_discards);
        stats->tx_carrier_errors = old_stats->tx_carrier_errors +
                get_stat64(&hw_stats->tx_carrier_sense_errors);

        stats->rx_crc_errors = old_stats->rx_crc_errors +
                calc_crc_errors(tp);

        stats->rx_missed_errors = old_stats->rx_missed_errors +
                get_stat64(&hw_stats->rx_discards);

        stats->rx_dropped = tp->rx_dropped;
        stats->tx_dropped = tp->tx_dropped;

        return stats;
}

static inline u32 calc_crc(unsigned char *buf, int len)
{
        u32 reg;
        u32 tmp;
        int j, k;

        reg = 0xffffffff;

        for (j = 0; j < len; j++) {
                reg ^= buf[j];

                for (k = 0; k < 8; k++) {
                        tmp = reg & 0x01;

                        reg >>= 1;

                        if (tmp)
                                reg ^= 0xedb88320;
                }
        }

        return ~reg;
}

static void tg3_set_multi(struct tg3 *tp, unsigned int accept_all)
{
        /* accept or reject all multicast frames */
        tw32(MAC_HASH_REG_0, accept_all ? 0xffffffff : 0);
        tw32(MAC_HASH_REG_1, accept_all ? 0xffffffff : 0);
        tw32(MAC_HASH_REG_2, accept_all ? 0xffffffff : 0);
        tw32(MAC_HASH_REG_3, accept_all ? 0xffffffff : 0);
}

static void __tg3_set_rx_mode(struct net_device *dev)
{
        struct tg3 *tp = netdev_priv(dev);
        u32 rx_mode;

        rx_mode = tp->rx_mode & ~(RX_MODE_PROMISC |
                                  RX_MODE_KEEP_VLAN_TAG);

#if !defined(CONFIG_VLAN_8021Q) && !defined(CONFIG_VLAN_8021Q_MODULE)
        /* When ASF is in use, we always keep the RX_MODE_KEEP_VLAN_TAG
         * flag clear.
         */
        if (!tg3_flag(tp, ENABLE_ASF))
                rx_mode |= RX_MODE_KEEP_VLAN_TAG;
#endif

        if (dev->flags & IFF_PROMISC) {
                /* Promiscuous mode. */
                rx_mode |= RX_MODE_PROMISC;
        } else if (dev->flags & IFF_ALLMULTI) {
                /* Accept all multicast. */
                tg3_set_multi(tp, 1);
        } else if (netdev_mc_empty(dev)) {
                /* Reject all multicast. */
                tg3_set_multi(tp, 0);
        } else {
                /* Accept one or more multicast(s). */
                struct netdev_hw_addr *ha;
                u32 mc_filter[4] = { 0, };
                u32 regidx;
                u32 bit;
                u32 crc;

                netdev_for_each_mc_addr(ha, dev) {
                        crc = calc_crc(ha->addr, ETH_ALEN);
                        bit = ~crc & 0x7f;
                        regidx = (bit & 0x60) >> 5;
                        bit &= 0x1f;
                        mc_filter[regidx] |= (1 << bit);
                }

                tw32(MAC_HASH_REG_0, mc_filter[0]);
                tw32(MAC_HASH_REG_1, mc_filter[1]);
                tw32(MAC_HASH_REG_2, mc_filter[2]);
                tw32(MAC_HASH_REG_3, mc_filter[3]);
        }

        if (rx_mode != tp->rx_mode) {
                tp->rx_mode = rx_mode;
                tw32_f(MAC_RX_MODE, rx_mode);
                udelay(10);
        }
}

static void tg3_set_rx_mode(struct net_device *dev)
{
        struct tg3 *tp = netdev_priv(dev);

        if (!netif_running(dev))
                return;

        tg3_full_lock(tp, 0);
        __tg3_set_rx_mode(dev);
        tg3_full_unlock(tp);
}

static int tg3_get_regs_len(struct net_device *dev)
{
        return TG3_REG_BLK_SIZE;
}

static void tg3_get_regs(struct net_device *dev,
                struct ethtool_regs *regs, void *_p)
{
        struct tg3 *tp = netdev_priv(dev);

        regs->version = 0;

        memset(_p, 0, TG3_REG_BLK_SIZE);

        if (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER)
                return;

        tg3_full_lock(tp, 0);

        tg3_dump_legacy_regs(tp, (u32 *)_p);

        tg3_full_unlock(tp);
}

static int tg3_get_eeprom_len(struct net_device *dev)
{
        struct tg3 *tp = netdev_priv(dev);

        return tp->nvram_size;
}

static int tg3_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data)
{
        struct tg3 *tp = netdev_priv(dev);
        int ret;
        u8  *pd;
        u32 i, offset, len, b_offset, b_count;
        __be32 val;

        if (tg3_flag(tp, NO_NVRAM))
                return -EINVAL;

        if (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER)
                return -EAGAIN;

        offset = eeprom->offset;
        len = eeprom->len;
        eeprom->len = 0;

        eeprom->magic = TG3_EEPROM_MAGIC;

        if (offset & 3) {
                /* adjustments to start on required 4 byte boundary */
                b_offset = offset & 3;
                b_count = 4 - b_offset;
                if (b_count > len) {
                        /* i.e. offset=1 len=2 */
                        b_count = len;
                }
                ret = tg3_nvram_read_be32(tp, offset-b_offset, &val);
                if (ret)
                        return ret;
                memcpy(data, ((char *)&val) + b_offset, b_count);
                len -= b_count;
                offset += b_count;
                eeprom->len += b_count;
        }

        /* read bytes up to the last 4 byte boundary */
        pd = &data[eeprom->len];
        for (i = 0; i < (len - (len & 3)); i += 4) {
                ret = tg3_nvram_read_be32(tp, offset + i, &val);
                if (ret) {
                        eeprom->len += i;
                        return ret;
                }
                memcpy(pd + i, &val, 4);
        }
        eeprom->len += i;

        if (len & 3) {
                /* read last bytes not ending on 4 byte boundary */
                pd = &data[eeprom->len];
                b_count = len & 3;
                b_offset = offset + len - b_count;
                ret = tg3_nvram_read_be32(tp, b_offset, &val);
                if (ret)
                        return ret;
                memcpy(pd, &val, b_count);
                eeprom->len += b_count;
        }
        return 0;
}

static int tg3_nvram_write_block(struct tg3 *tp, u32 offset, u32 len, u8 *buf);

static int tg3_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data)
{
        struct tg3 *tp = netdev_priv(dev);
        int ret;
        u32 offset, len, b_offset, odd_len;
        u8 *buf;
        __be32 start, end;

        if (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER)
                return -EAGAIN;

        if (tg3_flag(tp, NO_NVRAM) ||
            eeprom->magic != TG3_EEPROM_MAGIC)
                return -EINVAL;

        offset = eeprom->offset;
        len = eeprom->len;

        if ((b_offset = (offset & 3))) {
                /* adjustments to start on required 4 byte boundary */
                ret = tg3_nvram_read_be32(tp, offset-b_offset, &start);
                if (ret)
                        return ret;
                len += b_offset;
                offset &= ~3;
                if (len < 4)
                        len = 4;
        }

        odd_len = 0;
        if (len & 3) {
                /* adjustments to end on required 4 byte boundary */
                odd_len = 1;
                len = (len + 3) & ~3;
                ret = tg3_nvram_read_be32(tp, offset+len-4, &end);
                if (ret)
                        return ret;
        }

        buf = data;
        if (b_offset || odd_len) {
                buf = kmalloc(len, GFP_KERNEL);
                if (!buf)
                        return -ENOMEM;
                if (b_offset)
                        memcpy(buf, &start, 4);
                if (odd_len)
                        memcpy(buf+len-4, &end, 4);
                memcpy(buf + b_offset, data, eeprom->len);
        }

        ret = tg3_nvram_write_block(tp, offset, len, buf);

        if (buf != data)
                kfree(buf);

        return ret;
}

static int tg3_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
        struct tg3 *tp = netdev_priv(dev);

        if (tg3_flag(tp, USE_PHYLIB)) {
                struct phy_device *phydev;
                if (!(tp->phy_flags & TG3_PHYFLG_IS_CONNECTED))
                        return -EAGAIN;
                phydev = tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR];
                return phy_ethtool_gset(phydev, cmd);
        }

        cmd->supported = (SUPPORTED_Autoneg);

        if (!(tp->phy_flags & TG3_PHYFLG_10_100_ONLY))
                cmd->supported |= (SUPPORTED_1000baseT_Half |
                                   SUPPORTED_1000baseT_Full);

        if (!(tp->phy_flags & TG3_PHYFLG_ANY_SERDES)) {
                cmd->supported |= (SUPPORTED_100baseT_Half |
                                  SUPPORTED_100baseT_Full |
                                  SUPPORTED_10baseT_Half |
                                  SUPPORTED_10baseT_Full |
                                  SUPPORTED_TP);
                cmd->port = PORT_TP;
        } else {
                cmd->supported |= SUPPORTED_FIBRE;
                cmd->port = PORT_FIBRE;
        }

        cmd->advertising = tp->link_config.advertising;
        if (tg3_flag(tp, PAUSE_AUTONEG)) {
                if (tp->link_config.flowctrl & FLOW_CTRL_RX) {
                        if (tp->link_config.flowctrl & FLOW_CTRL_TX) {
                                cmd->advertising |= ADVERTISED_Pause;
                        } else {
                                cmd->advertising |= ADVERTISED_Pause |
                                                    ADVERTISED_Asym_Pause;
                        }
                } else if (tp->link_config.flowctrl & FLOW_CTRL_TX) {
                        cmd->advertising |= ADVERTISED_Asym_Pause;
                }
        }
        if (netif_running(dev)) {
                ethtool_cmd_speed_set(cmd, tp->link_config.active_speed);
                cmd->duplex = tp->link_config.active_duplex;
        } else {
                ethtool_cmd_speed_set(cmd, SPEED_INVALID);
                cmd->duplex = DUPLEX_INVALID;
        }
        cmd->phy_address = tp->phy_addr;
        cmd->transceiver = XCVR_INTERNAL;
        cmd->autoneg = tp->link_config.autoneg;
        cmd->maxtxpkt = 0;
        cmd->maxrxpkt = 0;
        return 0;
}

static int tg3_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
        struct tg3 *tp = netdev_priv(dev);
        u32 speed = ethtool_cmd_speed(cmd);

        if (tg3_flag(tp, USE_PHYLIB)) {
                struct phy_device *phydev;
                if (!(tp->phy_flags & TG3_PHYFLG_IS_CONNECTED))
                        return -EAGAIN;
                phydev = tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR];
                return phy_ethtool_sset(phydev, cmd);
        }

        if (cmd->autoneg != AUTONEG_ENABLE &&
            cmd->autoneg != AUTONEG_DISABLE)
                return -EINVAL;

        if (cmd->autoneg == AUTONEG_DISABLE &&
            cmd->duplex != DUPLEX_FULL &&
            cmd->duplex != DUPLEX_HALF)
                return -EINVAL;

        if (cmd->autoneg == AUTONEG_ENABLE) {
                u32 mask = ADVERTISED_Autoneg |
                           ADVERTISED_Pause |
                           ADVERTISED_Asym_Pause;

                if (!(tp->phy_flags & TG3_PHYFLG_10_100_ONLY))
                        mask |= ADVERTISED_1000baseT_Half |
                                ADVERTISED_1000baseT_Full;

                if (!(tp->phy_flags & TG3_PHYFLG_ANY_SERDES))
                        mask |= ADVERTISED_100baseT_Half |
                                ADVERTISED_100baseT_Full |
                                ADVERTISED_10baseT_Half |
                                ADVERTISED_10baseT_Full |
                                ADVERTISED_TP;
                else
                        mask |= ADVERTISED_FIBRE;

                if (cmd->advertising & ~mask)
                        return -EINVAL;

                mask &= (ADVERTISED_1000baseT_Half |
                         ADVERTISED_1000baseT_Full |
                         ADVERTISED_100baseT_Half |
                         ADVERTISED_100baseT_Full |
                         ADVERTISED_10baseT_Half |
                         ADVERTISED_10baseT_Full);

                cmd->advertising &= mask;
        } else {
                if (tp->phy_flags & TG3_PHYFLG_ANY_SERDES) {
                        if (speed != SPEED_1000)
                                return -EINVAL;

                        if (cmd->duplex != DUPLEX_FULL)
                                return -EINVAL;
                } else {
                        if (speed != SPEED_100 &&
                            speed != SPEED_10)
                                return -EINVAL;
                }
        }

        tg3_full_lock(tp, 0);

        tp->link_config.autoneg = cmd->autoneg;
        if (cmd->autoneg == AUTONEG_ENABLE) {
                tp->link_config.advertising = (cmd->advertising |
                                              ADVERTISED_Autoneg);
                tp->link_config.speed = SPEED_INVALID;
                tp->link_config.duplex = DUPLEX_INVALID;
        } else {
                tp->link_config.advertising = 0;
                tp->link_config.speed = speed;
                tp->link_config.duplex = cmd->duplex;
        }

        tp->link_config.orig_speed = tp->link_config.speed;
        tp->link_config.orig_duplex = tp->link_config.duplex;
        tp->link_config.orig_autoneg = tp->link_config.autoneg;

        if (netif_running(dev))
                tg3_setup_phy(tp, 1);

        tg3_full_unlock(tp);

        return 0;
}

static void tg3_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
        struct tg3 *tp = netdev_priv(dev);

        strcpy(info->driver, DRV_MODULE_NAME);
        strcpy(info->version, DRV_MODULE_VERSION);
        strcpy(info->fw_version, tp->fw_ver);
        strcpy(info->bus_info, pci_name(tp->pdev));
}

static void tg3_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
        struct tg3 *tp = netdev_priv(dev);

        if (tg3_flag(tp, WOL_CAP) && device_can_wakeup(&tp->pdev->dev))
                wol->supported = WAKE_MAGIC;
        else
                wol->supported = 0;
        wol->wolopts = 0;
        if (tg3_flag(tp, WOL_ENABLE) && device_can_wakeup(&tp->pdev->dev))
                wol->wolopts = WAKE_MAGIC;
        memset(&wol->sopass, 0, sizeof(wol->sopass));
}

static int tg3_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
        struct tg3 *tp = netdev_priv(dev);
        struct device *dp = &tp->pdev->dev;

        if (wol->wolopts & ~WAKE_MAGIC)
                return -EINVAL;
        if ((wol->wolopts & WAKE_MAGIC) &&
            !(tg3_flag(tp, WOL_CAP) && device_can_wakeup(dp)))
                return -EINVAL;

        device_set_wakeup_enable(dp, wol->wolopts & WAKE_MAGIC);

        spin_lock_bh(&tp->lock);
        if (device_may_wakeup(dp))
                tg3_flag_set(tp, WOL_ENABLE);
        else
                tg3_flag_clear(tp, WOL_ENABLE);
        spin_unlock_bh(&tp->lock);

        return 0;
}

static u32 tg3_get_msglevel(struct net_device *dev)
{
        struct tg3 *tp = netdev_priv(dev);
        return tp->msg_enable;
}

static void tg3_set_msglevel(struct net_device *dev, u32 value)
{
        struct tg3 *tp = netdev_priv(dev);
        tp->msg_enable = value;
}

static int tg3_nway_reset(struct net_device *dev)
{
        struct tg3 *tp = netdev_priv(dev);
        int r;

        if (!netif_running(dev))
                return -EAGAIN;

        if (tp->phy_flags & TG3_PHYFLG_PHY_SERDES)
                return -EINVAL;

        if (tg3_flag(tp, USE_PHYLIB)) {
                if (!(tp->phy_flags & TG3_PHYFLG_IS_CONNECTED))
                        return -EAGAIN;
                r = phy_start_aneg(tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR]);
        } else {
                u32 bmcr;

                spin_lock_bh(&tp->lock);
                r = -EINVAL;
                tg3_readphy(tp, MII_BMCR, &bmcr);
                if (!tg3_readphy(tp, MII_BMCR, &bmcr) &&
                    ((bmcr & BMCR_ANENABLE) ||
                     (tp->phy_flags & TG3_PHYFLG_PARALLEL_DETECT))) {
                        tg3_writephy(tp, MII_BMCR, bmcr | BMCR_ANRESTART |
                                                   BMCR_ANENABLE);
                        r = 0;
                }
                spin_unlock_bh(&tp->lock);
        }

        return r;
}

static void tg3_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ering)
{
        struct tg3 *tp = netdev_priv(dev);

        ering->rx_max_pending = tp->rx_std_ring_mask;
        if (tg3_flag(tp, JUMBO_RING_ENABLE))
                ering->rx_jumbo_max_pending = tp->rx_jmb_ring_mask;
        else
                ering->rx_jumbo_max_pending = 0;

        ering->tx_max_pending = TG3_TX_RING_SIZE - 1;

        ering->rx_pending = tp->rx_pending;
        if (tg3_flag(tp, JUMBO_RING_ENABLE))
                ering->rx_jumbo_pending = tp->rx_jumbo_pending;
        else
                ering->rx_jumbo_pending = 0;

        ering->tx_pending = tp->napi[0].tx_pending;
}

static int tg3_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ering)
{
        struct tg3 *tp = netdev_priv(dev);
        int i, irq_sync = 0, err = 0;

        if ((ering->rx_pending > tp->rx_std_ring_mask) ||
            (ering->rx_jumbo_pending > tp->rx_jmb_ring_mask) ||
            (ering->tx_pending > TG3_TX_RING_SIZE - 1) ||
            (ering->tx_pending <= MAX_SKB_FRAGS) ||
            (tg3_flag(tp, TSO_BUG) &&
             (ering->tx_pending <= (MAX_SKB_FRAGS * 3))))
                return -EINVAL;

        if (netif_running(dev)) {
                tg3_phy_stop(tp);
                tg3_netif_stop(tp);
                irq_sync = 1;
        }

        tg3_full_lock(tp, irq_sync);

        tp->rx_pending = ering->rx_pending;

        if (tg3_flag(tp, MAX_RXPEND_64) &&
            tp->rx_pending > 63)
                tp->rx_pending = 63;
        tp->rx_jumbo_pending = ering->rx_jumbo_pending;

        for (i = 0; i < tp->irq_max; i++)
                tp->napi[i].tx_pending = ering->tx_pending;

        if (netif_running(dev)) {
                tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
                err = tg3_restart_hw(tp, 1);
                if (!err)
                        tg3_netif_start(tp);
        }

        tg3_full_unlock(tp);

        if (irq_sync && !err)
                tg3_phy_start(tp);

        return err;
}

static void tg3_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam *epause)
{
        struct tg3 *tp = netdev_priv(dev);

        epause->autoneg = !!tg3_flag(tp, PAUSE_AUTONEG);

        if (tp->link_config.active_flowctrl & FLOW_CTRL_RX)
                epause->rx_pause = 1;
        else
                epause->rx_pause = 0;

        if (tp->link_config.active_flowctrl & FLOW_CTRL_TX)
                epause->tx_pause = 1;
        else
                epause->tx_pause = 0;
}

static int tg3_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam *epause)
{
        struct tg3 *tp = netdev_priv(dev);
        int err = 0;

        if (tg3_flag(tp, USE_PHYLIB)) {
                u32 newadv;
                struct phy_device *phydev;

                phydev = tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR];

                if (!(phydev->supported & SUPPORTED_Pause) ||
                    (!(phydev->supported & SUPPORTED_Asym_Pause) &&
                     (epause->rx_pause != epause->tx_pause)))
                        return -EINVAL;

                tp->link_config.flowctrl = 0;
                if (epause->rx_pause) {
                        tp->link_config.flowctrl |= FLOW_CTRL_RX;

                        if (epause->tx_pause) {
                                tp->link_config.flowctrl |= FLOW_CTRL_TX;
                                newadv = ADVERTISED_Pause;
                        } else
                                newadv = ADVERTISED_Pause |
                                         ADVERTISED_Asym_Pause;
                } else if (epause->tx_pause) {
                        tp->link_config.flowctrl |= FLOW_CTRL_TX;
                        newadv = ADVERTISED_Asym_Pause;
                } else
                        newadv = 0;

                if (epause->autoneg)
                        tg3_flag_set(tp, PAUSE_AUTONEG);
                else
                        tg3_flag_clear(tp, PAUSE_AUTONEG);

                if (tp->phy_flags & TG3_PHYFLG_IS_CONNECTED) {
                        u32 oldadv = phydev->advertising &
                                     (ADVERTISED_Pause | ADVERTISED_Asym_Pause);
                        if (oldadv != newadv) {
                                phydev->advertising &=
                                        ~(ADVERTISED_Pause |
                                          ADVERTISED_Asym_Pause);
                                phydev->advertising |= newadv;
                                if (phydev->autoneg) {
                                        /*
                                         * Always renegotiate the link to
                                         * inform our link partner of our
                                         * flow control settings, even if the
                                         * flow control is forced.  Let
                                         * tg3_adjust_link() do the final
                                         * flow control setup.
                                         */
                                        return phy_start_aneg(phydev);
                                }
                        }

                        if (!epause->autoneg)
                                tg3_setup_flow_control(tp, 0, 0);
                } else {
                        tp->link_config.orig_advertising &=
                                        ~(ADVERTISED_Pause |
                                          ADVERTISED_Asym_Pause);
                        tp->link_config.orig_advertising |= newadv;
                }
        } else {
                int irq_sync = 0;

                if (netif_running(dev)) {
                        tg3_netif_stop(tp);
                        irq_sync = 1;
                }

                tg3_full_lock(tp, irq_sync);

                if (epause->autoneg)
                        tg3_flag_set(tp, PAUSE_AUTONEG);
                else
                        tg3_flag_clear(tp, PAUSE_AUTONEG);
                if (epause->rx_pause)
                        tp->link_config.flowctrl |= FLOW_CTRL_RX;
                else
                        tp->link_config.flowctrl &= ~FLOW_CTRL_RX;
                if (epause->tx_pause)
                        tp->link_config.flowctrl |= FLOW_CTRL_TX;
                else
                        tp->link_config.flowctrl &= ~FLOW_CTRL_TX;

                if (netif_running(dev)) {
                        tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
                        err = tg3_restart_hw(tp, 1);
                        if (!err)
                                tg3_netif_start(tp);
                }

                tg3_full_unlock(tp);
        }

        return err;
}

static int tg3_get_sset_count(struct net_device *dev, int sset)
{
        switch (sset) {
        case ETH_SS_TEST:
                return TG3_NUM_TEST;
        case ETH_SS_STATS:
                return TG3_NUM_STATS;
        default:
                return -EOPNOTSUPP;
        }
}

static void tg3_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
{
        switch (stringset) {
        case ETH_SS_STATS:
                memcpy(buf, &ethtool_stats_keys, sizeof(ethtool_stats_keys));
                break;
        case ETH_SS_TEST:
                memcpy(buf, &ethtool_test_keys, sizeof(ethtool_test_keys));
                break;
        default:
                WARN_ON(1);     /* we need a WARN() */
                break;
        }
}

static int tg3_set_phys_id(struct net_device *dev,
                            enum ethtool_phys_id_state state)
{
        struct tg3 *tp = netdev_priv(dev);

        if (!netif_running(tp->dev))
                return -EAGAIN;

        switch (state) {
        case ETHTOOL_ID_ACTIVE:
                return 1;       /* cycle on/off once per second */

        case ETHTOOL_ID_ON:
                tw32(MAC_LED_CTRL, LED_CTRL_LNKLED_OVERRIDE |
                     LED_CTRL_1000MBPS_ON |
                     LED_CTRL_100MBPS_ON |
                     LED_CTRL_10MBPS_ON |
                     LED_CTRL_TRAFFIC_OVERRIDE |
                     LED_CTRL_TRAFFIC_BLINK |
                     LED_CTRL_TRAFFIC_LED);
                break;

        case ETHTOOL_ID_OFF:
                tw32(MAC_LED_CTRL, LED_CTRL_LNKLED_OVERRIDE |
                     LED_CTRL_TRAFFIC_OVERRIDE);
                break;

        case ETHTOOL_ID_INACTIVE:
                tw32(MAC_LED_CTRL, tp->led_ctrl);
                break;
        }

        return 0;
}

static void tg3_get_ethtool_stats(struct net_device *dev,
                                   struct ethtool_stats *estats, u64 *tmp_stats)
{
        struct tg3 *tp = netdev_priv(dev);
        memcpy(tmp_stats, tg3_get_estats(tp), sizeof(tp->estats));
}

static __be32 *tg3_vpd_readblock(struct tg3 *tp, u32 *vpdlen)
{
        int i;
        __be32 *buf;
        u32 offset = 0, len = 0;
        u32 magic, val;

        if (tg3_flag(tp, NO_NVRAM) || tg3_nvram_read(tp, 0, &magic))
                return NULL;

        if (magic == TG3_EEPROM_MAGIC) {
                for (offset = TG3_NVM_DIR_START;
                     offset < TG3_NVM_DIR_END;
                     offset += TG3_NVM_DIRENT_SIZE) {
                        if (tg3_nvram_read(tp, offset, &val))
                                return NULL;

                        if ((val >> TG3_NVM_DIRTYPE_SHIFT) ==
                            TG3_NVM_DIRTYPE_EXTVPD)
                                break;
                }

                if (offset != TG3_NVM_DIR_END) {
                        len = (val & TG3_NVM_DIRTYPE_LENMSK) * 4;
                        if (tg3_nvram_read(tp, offset + 4, &offset))
                                return NULL;

                        offset = tg3_nvram_logical_addr(tp, offset);
                }
        }

        if (!offset || !len) {
                offset = TG3_NVM_VPD_OFF;
                len = TG3_NVM_VPD_LEN;
        }

        buf = kmalloc(len, GFP_KERNEL);
        if (buf == NULL)
                return NULL;

        if (magic == TG3_EEPROM_MAGIC) {
                for (i = 0; i < len; i += 4) {
                        /* The data is in little-endian format in NVRAM.
                         * Use the big-endian read routines to preserve
                         * the byte order as it exists in NVRAM.
                         */
                        if (tg3_nvram_read_be32(tp, offset + i, &buf[i/4]))
                                goto error;
                }
        } else {
                u8 *ptr;
                ssize_t cnt;
                unsigned int pos = 0;

                ptr = (u8 *)&buf[0];
                for (i = 0; pos < len && i < 3; i++, pos += cnt, ptr += cnt) {
                        cnt = pci_read_vpd(tp->pdev, pos,
                                           len - pos, ptr);
                        if (cnt == -ETIMEDOUT || cnt == -EINTR)
                                cnt = 0;
                        else if (cnt < 0)
                                goto error;
                }
                if (pos != len)
                        goto error;
        }

        *vpdlen = len;

        return buf;

error:
        kfree(buf);
        return NULL;
}

#define NVRAM_TEST_SIZE 0x100
#define NVRAM_SELFBOOT_FORMAT1_0_SIZE   0x14
#define NVRAM_SELFBOOT_FORMAT1_2_SIZE   0x18
#define NVRAM_SELFBOOT_FORMAT1_3_SIZE   0x1c
#define NVRAM_SELFBOOT_FORMAT1_4_SIZE   0x20
#define NVRAM_SELFBOOT_FORMAT1_5_SIZE   0x24
#define NVRAM_SELFBOOT_FORMAT1_6_SIZE   0x50
#define NVRAM_SELFBOOT_HW_SIZE 0x20
#define NVRAM_SELFBOOT_DATA_SIZE 0x1c

static int tg3_test_nvram(struct tg3 *tp)
{
        u32 csum, magic, len;
        __be32 *buf;
        int i, j, k, err = 0, size;

        if (tg3_flag(tp, NO_NVRAM))
                return 0;

        if (tg3_nvram_read(tp, 0, &magic) != 0)
                return -EIO;

        if (magic == TG3_EEPROM_MAGIC)
                size = NVRAM_TEST_SIZE;
        else if ((magic & TG3_EEPROM_MAGIC_FW_MSK) == TG3_EEPROM_MAGIC_FW) {
                if ((magic & TG3_EEPROM_SB_FORMAT_MASK) ==
                    TG3_EEPROM_SB_FORMAT_1) {
                        switch (magic & TG3_EEPROM_SB_REVISION_MASK) {
                        case TG3_EEPROM_SB_REVISION_0:
                                size = NVRAM_SELFBOOT_FORMAT1_0_SIZE;
                                break;
                        case TG3_EEPROM_SB_REVISION_2:
                                size = NVRAM_SELFBOOT_FORMAT1_2_SIZE;
                                break;
                        case TG3_EEPROM_SB_REVISION_3:
                                size = NVRAM_SELFBOOT_FORMAT1_3_SIZE;
                                break;
                        case TG3_EEPROM_SB_REVISION_4:
                                size = NVRAM_SELFBOOT_FORMAT1_4_SIZE;
                                break;
                        case TG3_EEPROM_SB_REVISION_5:
                                size = NVRAM_SELFBOOT_FORMAT1_5_SIZE;
                                break;
                        case TG3_EEPROM_SB_REVISION_6:
                                size = NVRAM_SELFBOOT_FORMAT1_6_SIZE;
                                break;
                        default:
                                return -EIO;
                        }
                } else
                        return 0;
        } else if ((magic & TG3_EEPROM_MAGIC_HW_MSK) == TG3_EEPROM_MAGIC_HW)
                size = NVRAM_SELFBOOT_HW_SIZE;
        else
                return -EIO;

        buf = kmalloc(size, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;

        err = -EIO;
        for (i = 0, j = 0; i < size; i += 4, j++) {
                err = tg3_nvram_read_be32(tp, i, &buf[j]);
                if (err)
                        break;
        }
        if (i < size)
                goto out;

        /* Selfboot format */
        magic = be32_to_cpu(buf[0]);
        if ((magic & TG3_EEPROM_MAGIC_FW_MSK) ==
            TG3_EEPROM_MAGIC_FW) {
                u8 *buf8 = (u8 *) buf, csum8 = 0;

                if ((magic & TG3_EEPROM_SB_REVISION_MASK) ==
                    TG3_EEPROM_SB_REVISION_2) {
                        /* For rev 2, the csum doesn't include the MBA. */
                        for (i = 0; i < TG3_EEPROM_SB_F1R2_MBA_OFF; i++)
                                csum8 += buf8[i];
                        for (i = TG3_EEPROM_SB_F1R2_MBA_OFF + 4; i < size; i++)
                                csum8 += buf8[i];
                } else {
                        for (i = 0; i < size; i++)
                                csum8 += buf8[i];
                }

                if (csum8 == 0) {
                        err = 0;
                        goto out;
                }

                err = -EIO;
                goto out;
        }

        if ((magic & TG3_EEPROM_MAGIC_HW_MSK) ==
            TG3_EEPROM_MAGIC_HW) {
                u8 data[NVRAM_SELFBOOT_DATA_SIZE];
                u8 parity[NVRAM_SELFBOOT_DATA_SIZE];
                u8 *buf8 = (u8 *) buf;

                /* Separate the parity bits and the data bytes.  */
                for (i = 0, j = 0, k = 0; i < NVRAM_SELFBOOT_HW_SIZE; i++) {
                        if ((i == 0) || (i == 8)) {
                                int l;
                                u8 msk;

                                for (l = 0, msk = 0x80; l < 7; l++, msk >>= 1)
                                        parity[k++] = buf8[i] & msk;
                                i++;
                        } else if (i == 16) {
                                int l;
                                u8 msk;

                                for (l = 0, msk = 0x20; l < 6; l++, msk >>= 1)
                                        parity[k++] = buf8[i] & msk;
                                i++;

                                for (l = 0, msk = 0x80; l < 8; l++, msk >>= 1)
                                        parity[k++] = buf8[i] & msk;
                                i++;
                        }
                        data[j++] = buf8[i];
                }

                err = -EIO;
                for (i = 0; i < NVRAM_SELFBOOT_DATA_SIZE; i++) {
                        u8 hw8 = hweight8(data[i]);

                        if ((hw8 & 0x1) && parity[i])
                                goto out;
                        else if (!(hw8 & 0x1) && !parity[i])
                                goto out;
                }
                err = 0;
                goto out;
        }

        err = -EIO;

        /* Bootstrap checksum at offset 0x10 */
        csum = calc_crc((unsigned char *) buf, 0x10);
        if (csum != le32_to_cpu(buf[0x10/4]))
                goto out;

        /* Manufacturing block starts at offset 0x74, checksum at 0xfc */
        csum = calc_crc((unsigned char *) &buf[0x74/4], 0x88);
        if (csum != le32_to_cpu(buf[0xfc/4]))
                goto out;

        kfree(buf);

        buf = tg3_vpd_readblock(tp, &len);
        if (!buf)
                return -ENOMEM;

        i = pci_vpd_find_tag((u8 *)buf, 0, len, PCI_VPD_LRDT_RO_DATA);
        if (i > 0) {
                j = pci_vpd_lrdt_size(&((u8 *)buf)[i]);
                if (j < 0)
                        goto out;

                if (i + PCI_VPD_LRDT_TAG_SIZE + j > len)
                        goto out;

                i += PCI_VPD_LRDT_TAG_SIZE;
                j = pci_vpd_find_info_keyword((u8 *)buf, i, j,
                                              PCI_VPD_RO_KEYWORD_CHKSUM);
                if (j > 0) {
                        u8 csum8 = 0;

                        j += PCI_VPD_INFO_FLD_HDR_SIZE;

                        for (i = 0; i <= j; i++)
                                csum8 += ((u8 *)buf)[i];

                        if (csum8)
                                goto out;
                }
        }

        err = 0;

out:
        kfree(buf);
        return err;
}

#define TG3_SERDES_TIMEOUT_SEC  2
#define TG3_COPPER_TIMEOUT_SEC  6

static int tg3_test_link(struct tg3 *tp)
{
        int i, max;

        if (!netif_running(tp->dev))
                return -ENODEV;

        if (tp->phy_flags & TG3_PHYFLG_ANY_SERDES)
                max = TG3_SERDES_TIMEOUT_SEC;
        else
                max = TG3_COPPER_TIMEOUT_SEC;

        for (i = 0; i < max; i++) {
                if (netif_carrier_ok(tp->dev))
                        return 0;

                if (msleep_interruptible(1000))
                        break;
        }

        return -EIO;
}

/* Only test the commonly used registers */
static int tg3_test_registers(struct tg3 *tp)
{
        int i, is_5705, is_5750;
        u32 offset, read_mask, write_mask, val, save_val, read_val;
        static struct {
                u16 offset;
                u16 flags;
#define TG3_FL_5705     0x1
#define TG3_FL_NOT_5705 0x2
#define TG3_FL_NOT_5788 0x4
#define TG3_FL_NOT_5750 0x8
                u32 read_mask;
                u32 write_mask;
        } reg_tbl[] = {
                /* MAC Control Registers */
                { MAC_MODE, TG3_FL_NOT_5705,
                        0x00000000, 0x00ef6f8c },
                { MAC_MODE, TG3_FL_5705,
                        0x00000000, 0x01ef6b8c },
                { MAC_STATUS, TG3_FL_NOT_5705,
                        0x03800107, 0x00000000 },
                { MAC_STATUS, TG3_FL_5705,
                        0x03800100, 0x00000000 },
                { MAC_ADDR_0_HIGH, 0x0000,
                        0x00000000, 0x0000ffff },
                { MAC_ADDR_0_LOW, 0x0000,
                        0x00000000, 0xffffffff },
                { MAC_RX_MTU_SIZE, 0x0000,
                        0x00000000, 0x0000ffff },
                { MAC_TX_MODE, 0x0000,
                        0x00000000, 0x00000070 },
                { MAC_TX_LENGTHS, 0x0000,
                        0x00000000, 0x00003fff },
                { MAC_RX_MODE, TG3_FL_NOT_5705,
                        0x00000000, 0x000007fc },
                { MAC_RX_MODE, TG3_FL_5705,
                        0x00000000, 0x000007dc },
                { MAC_HASH_REG_0, 0x0000,
                        0x00000000, 0xffffffff },
                { MAC_HASH_REG_1, 0x0000,
                        0x00000000, 0xffffffff },
                { MAC_HASH_REG_2, 0x0000,
                        0x00000000, 0xffffffff },
                { MAC_HASH_REG_3, 0x0000,
                        0x00000000, 0xffffffff },

                /* Receive Data and Receive BD Initiator Control Registers. */
                { RCVDBDI_JUMBO_BD+0, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { RCVDBDI_JUMBO_BD+4, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { RCVDBDI_JUMBO_BD+8, TG3_FL_NOT_5705,
                        0x00000000, 0x00000003 },
                { RCVDBDI_JUMBO_BD+0xc, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { RCVDBDI_STD_BD+0, 0x0000,
                        0x00000000, 0xffffffff },
                { RCVDBDI_STD_BD+4, 0x0000,
                        0x00000000, 0xffffffff },
                { RCVDBDI_STD_BD+8, 0x0000,
                        0x00000000, 0xffff0002 },
                { RCVDBDI_STD_BD+0xc, 0x0000,
                        0x00000000, 0xffffffff },

                /* Receive BD Initiator Control Registers. */
                { RCVBDI_STD_THRESH, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { RCVBDI_STD_THRESH, TG3_FL_5705,
                        0x00000000, 0x000003ff },
                { RCVBDI_JUMBO_THRESH, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },

                /* Host Coalescing Control Registers. */
                { HOSTCC_MODE, TG3_FL_NOT_5705,
                        0x00000000, 0x00000004 },
                { HOSTCC_MODE, TG3_FL_5705,
                        0x00000000, 0x000000f6 },
                { HOSTCC_RXCOL_TICKS, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { HOSTCC_RXCOL_TICKS, TG3_FL_5705,
                        0x00000000, 0x000003ff },
                { HOSTCC_TXCOL_TICKS, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { HOSTCC_TXCOL_TICKS, TG3_FL_5705,
                        0x00000000, 0x000003ff },
                { HOSTCC_RXMAX_FRAMES, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { HOSTCC_RXMAX_FRAMES, TG3_FL_5705 | TG3_FL_NOT_5788,
                        0x00000000, 0x000000ff },
                { HOSTCC_TXMAX_FRAMES, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { HOSTCC_TXMAX_FRAMES, TG3_FL_5705 | TG3_FL_NOT_5788,
                        0x00000000, 0x000000ff },
                { HOSTCC_RXCOAL_TICK_INT, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { HOSTCC_TXCOAL_TICK_INT, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { HOSTCC_RXCOAL_MAXF_INT, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { HOSTCC_RXCOAL_MAXF_INT, TG3_FL_5705 | TG3_FL_NOT_5788,
                        0x00000000, 0x000000ff },
                { HOSTCC_TXCOAL_MAXF_INT, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { HOSTCC_TXCOAL_MAXF_INT, TG3_FL_5705 | TG3_FL_NOT_5788,
                        0x00000000, 0x000000ff },
                { HOSTCC_STAT_COAL_TICKS, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { HOSTCC_STATS_BLK_HOST_ADDR, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { HOSTCC_STATS_BLK_HOST_ADDR+4, TG3_FL_NOT_5705,
                        0x00000000, 0xffffffff },
                { HOSTCC_STATUS_BLK_HOST_ADDR, 0x0000,
                        0x00000000, 0xffffffff },
                { HOSTCC_STATUS_BLK_HOST_ADDR+4, 0x0000,
                        0x00000000, 0xffffffff },
                { HOSTCC_STATS_BLK_NIC_ADDR, 0x0000,
                        0xffffffff, 0x00000000 },
                { HOSTCC_STATUS_BLK_NIC_ADDR, 0x0000,
                        0xffffffff, 0x00000000 },

                /* Buffer Manager Control Registers. */
                { BUFMGR_MB_POOL_ADDR, TG3_FL_NOT_5750,
                        0x00000000, 0x007fff80 },
                { BUFMGR_MB_POOL_SIZE, TG3_FL_NOT_5750,
                        0x00000000, 0x007fffff },
                { BUFMGR_MB_RDMA_LOW_WATER, 0x0000,
                        0x00000000, 0x0000003f },
                { BUFMGR_MB_MACRX_LOW_WATER, 0x0000,
                        0x00000000, 0x000001ff },
                { BUFMGR_MB_HIGH_WATER, 0x0000,
                        0x00000000, 0x000001ff },
                { BUFMGR_DMA_DESC_POOL_ADDR, TG3_FL_NOT_5705,
                        0xffffffff, 0x00000000 },
                { BUFMGR_DMA_DESC_POOL_SIZE, TG3_FL_NOT_5705,
                        0xffffffff, 0x00000000 },

                /* Mailbox Registers */
                { GRCMBOX_RCVSTD_PROD_IDX+4, 0x0000,
                        0x00000000, 0x000001ff },
                { GRCMBOX_RCVJUMBO_PROD_IDX+4, TG3_FL_NOT_5705,
                        0x00000000, 0x000001ff },
                { GRCMBOX_RCVRET_CON_IDX_0+4, 0x0000,
                        0x00000000, 0x000007ff },
                { GRCMBOX_SNDHOST_PROD_IDX_0+4, 0x0000,
                        0x00000000, 0x000001ff },

                { 0xffff, 0x0000, 0x00000000, 0x00000000 },
        };

        is_5705 = is_5750 = 0;
        if (tg3_flag(tp, 5705_PLUS)) {
                is_5705 = 1;
                if (tg3_flag(tp, 5750_PLUS))
                        is_5750 = 1;
        }

        for (i = 0; reg_tbl[i].offset != 0xffff; i++) {
                if (is_5705 && (reg_tbl[i].flags & TG3_FL_NOT_5705))
                        continue;

                if (!is_5705 && (reg_tbl[i].flags & TG3_FL_5705))
                        continue;

                if (tg3_flag(tp, IS_5788) &&
                    (reg_tbl[i].flags & TG3_FL_NOT_5788))
                        continue;

                if (is_5750 && (reg_tbl[i].flags & TG3_FL_NOT_5750))
                        continue;

                offset = (u32) reg_tbl[i].offset;
                read_mask = reg_tbl[i].read_mask;
                write_mask = reg_tbl[i].write_mask;

                /* Save the original register content */
                save_val = tr32(offset);

                /* Determine the read-only value. */
                read_val = save_val & read_mask;

                /* Write zero to the register, then make sure the read-only bits
                 * are not changed and the read/write bits are all zeros.
                 */
                tw32(offset, 0);

                val = tr32(offset);

                /* Test the read-only and read/write bits. */
                if (((val & read_mask) != read_val) || (val & write_mask))
                        goto out;

                /* Write ones to all the bits defined by RdMask and WrMask, then
                 * make sure the read-only bits are not changed and the
                 * read/write bits are all ones.
                 */
                tw32(offset, read_mask | write_mask);

                val = tr32(offset);

                /* Test the read-only bits. */
                if ((val & read_mask) != read_val)
                        goto out;

                /* Test the read/write bits. */
                if ((val & write_mask) != write_mask)
                        goto out;

                tw32(offset, save_val);
        }

        return 0;

out:
        if (netif_msg_hw(tp))
                netdev_err(tp->dev,
                           "Register test failed at offset %x\n", offset);
        tw32(offset, save_val);
        return -EIO;
}

static int tg3_do_mem_test(struct tg3 *tp, u32 offset, u32 len)
{
        static const u32 test_pattern[] = { 0x00000000, 0xffffffff, 0xaa55a55a };
        int i;
        u32 j;

        for (i = 0; i < ARRAY_SIZE(test_pattern); i++) {
                for (j = 0; j < len; j += 4) {
                        u32 val;

                        tg3_write_mem(tp, offset + j, test_pattern[i]);
                        tg3_read_mem(tp, offset + j, &val);
                        if (val != test_pattern[i])
                                return -EIO;
                }
        }
        return 0;
}

static int tg3_test_memory(struct tg3 *tp)
{
        static struct mem_entry {
                u32 offset;
                u32 len;
        } mem_tbl_570x[] = {
                { 0x00000000, 0x00b50},
                { 0x00002000, 0x1c000},
                { 0xffffffff, 0x00000}
        }, mem_tbl_5705[] = {
                { 0x00000100, 0x0000c},
                { 0x00000200, 0x00008},
                { 0x00004000, 0x00800},
                { 0x00006000, 0x01000},
                { 0x00008000, 0x02000},
                { 0x00010000, 0x0e000},
                { 0xffffffff, 0x00000}
        }, mem_tbl_5755[] = {
                { 0x00000200, 0x00008},
                { 0x00004000, 0x00800},
                { 0x00006000, 0x00800},
                { 0x00008000, 0x02000},
                { 0x00010000, 0x0c000},
                { 0xffffffff, 0x00000}
        }, mem_tbl_5906[] = {
                { 0x00000200, 0x00008},
                { 0x00004000, 0x00400},
                { 0x00006000, 0x00400},
                { 0x00008000, 0x01000},
                { 0x00010000, 0x01000},
                { 0xffffffff, 0x00000}
        }, mem_tbl_5717[] = {
                { 0x00000200, 0x00008},
                { 0x00010000, 0x0a000},
                { 0x00020000, 0x13c00},
                { 0xffffffff, 0x00000}
        }, mem_tbl_57765[] = {
                { 0x00000200, 0x00008},
                { 0x00004000, 0x00800},
                { 0x00006000, 0x09800},
                { 0x00010000, 0x0a000},
                { 0xffffffff, 0x00000}
        };
        struct mem_entry *mem_tbl;
        int err = 0;
        int i;

        if (tg3_flag(tp, 5717_PLUS))
                mem_tbl = mem_tbl_5717;
        else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765)
                mem_tbl = mem_tbl_57765;
        else if (tg3_flag(tp, 5755_PLUS))
                mem_tbl = mem_tbl_5755;
        else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906)
                mem_tbl = mem_tbl_5906;
        else if (tg3_flag(tp, 5705_PLUS))
                mem_tbl = mem_tbl_5705;
        else
                mem_tbl = mem_tbl_570x;

        for (i = 0; mem_tbl[i].offset != 0xffffffff; i++) {
                err = tg3_do_mem_test(tp, mem_tbl[i].offset, mem_tbl[i].len);
                if (err)
                        break;
        }

        return err;
}

#define TG3_TSO_MSS             500

#define TG3_TSO_IP_HDR_LEN      20
#define TG3_TSO_TCP_HDR_LEN     20
#define TG3_TSO_TCP_OPT_LEN     12

static const u8 tg3_tso_header[] = {
0x08, 0x00,
0x45, 0x00, 0x00, 0x00,
0x00, 0x00, 0x40, 0x00,
0x40, 0x06, 0x00, 0x00,
0x0a, 0x00, 0x00, 0x01,
0x0a, 0x00, 0x00, 0x02,
0x0d, 0x00, 0xe0, 0x00,
0x00, 0x00, 0x01, 0x00,
0x00, 0x00, 0x02, 0x00,
0x80, 0x10, 0x10, 0x00,
0x14, 0x09, 0x00, 0x00,
0x01, 0x01, 0x08, 0x0a,
0x11, 0x11, 0x11, 0x11,
0x11, 0x11, 0x11, 0x11,
};

static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, bool tso_loopback)
{
        u32 rx_start_idx, rx_idx, tx_idx, opaque_key;
        u32 base_flags = 0, mss = 0, desc_idx, coal_now, data_off, val;
        u32 budget;
        struct sk_buff *skb, *rx_skb;
        u8 *tx_data;
        dma_addr_t map;
        int num_pkts, tx_len, rx_len, i, err;
        struct tg3_rx_buffer_desc *desc;
        struct tg3_napi *tnapi, *rnapi;
        struct tg3_rx_prodring_set *tpr = &tp->napi[0].prodring;

        tnapi = &tp->napi[0];
        rnapi = &tp->napi[0];
        if (tp->irq_cnt > 1) {
                if (tg3_flag(tp, ENABLE_RSS))
                        rnapi = &tp->napi[1];
                if (tg3_flag(tp, ENABLE_TSS))
                        tnapi = &tp->napi[1];
        }
        coal_now = tnapi->coal_now | rnapi->coal_now;

        err = -EIO;

        tx_len = pktsz;
        skb = netdev_alloc_skb(tp->dev, tx_len);
        if (!skb)
                return -ENOMEM;

        tx_data = skb_put(skb, tx_len);
        memcpy(tx_data, tp->dev->dev_addr, 6);
        memset(tx_data + 6, 0x0, 8);

        tw32(MAC_RX_MTU_SIZE, tx_len + ETH_FCS_LEN);

        if (tso_loopback) {
                struct iphdr *iph = (struct iphdr *)&tx_data[ETH_HLEN];

                u32 hdr_len = TG3_TSO_IP_HDR_LEN + TG3_TSO_TCP_HDR_LEN +
                              TG3_TSO_TCP_OPT_LEN;

                memcpy(tx_data + ETH_ALEN * 2, tg3_tso_header,
                       sizeof(tg3_tso_header));
                mss = TG3_TSO_MSS;

                val = tx_len - ETH_ALEN * 2 - sizeof(tg3_tso_header);
                num_pkts = DIV_ROUND_UP(val, TG3_TSO_MSS);

                /* Set the total length field in the IP header */
                iph->tot_len = htons((u16)(mss + hdr_len));

                base_flags = (TXD_FLAG_CPU_PRE_DMA |
                              TXD_FLAG_CPU_POST_DMA);

                if (tg3_flag(tp, HW_TSO_1) ||
                    tg3_flag(tp, HW_TSO_2) ||
                    tg3_flag(tp, HW_TSO_3)) {
                        struct tcphdr *th;
                        val = ETH_HLEN + TG3_TSO_IP_HDR_LEN;
                        th = (struct tcphdr *)&tx_data[val];
                        th->check = 0;
                } else
                        base_flags |= TXD_FLAG_TCPUDP_CSUM;

                if (tg3_flag(tp, HW_TSO_3)) {
                        mss |= (hdr_len & 0xc) << 12;
                        if (hdr_len & 0x10)
                                base_flags |= 0x00000010;
                        base_flags |= (hdr_len & 0x3e0) << 5;
                } else if (tg3_flag(tp, HW_TSO_2))
                        mss |= hdr_len << 9;
                else if (tg3_flag(tp, HW_TSO_1) ||
                         GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) {
                        mss |= (TG3_TSO_TCP_OPT_LEN << 9);
                } else {
                        base_flags |= (TG3_TSO_TCP_OPT_LEN << 10);
                }

                data_off = ETH_ALEN * 2 + sizeof(tg3_tso_header);
        } else {
                num_pkts = 1;
                data_off = ETH_HLEN;
        }

        for (i = data_off; i < tx_len; i++)
                tx_data[i] = (u8) (i & 0xff);

        map = pci_map_single(tp->pdev, skb->data, tx_len, PCI_DMA_TODEVICE);
        if (pci_dma_mapping_error(tp->pdev, map)) {
                dev_kfree_skb(skb);
                return -EIO;
        }

        val = tnapi->tx_prod;
        tnapi->tx_buffers[val].skb = skb;
        dma_unmap_addr_set(&tnapi->tx_buffers[val], mapping, map);

        tw32_f(HOSTCC_MODE, tp->coalesce_mode | HOSTCC_MODE_ENABLE |
               rnapi->coal_now);

        udelay(10);

        rx_start_idx = rnapi->hw_status->idx[0].rx_producer;

        budget = tg3_tx_avail(tnapi);
        if (tg3_tx_frag_set(tnapi, &val, &budget, map, tx_len,
                            base_flags | TXD_FLAG_END, mss, 0)) {
                tnapi->tx_buffers[val].skb = NULL;
                dev_kfree_skb(skb);
                return -EIO;
        }

        tnapi->tx_prod++;

        tw32_tx_mbox(tnapi->prodmbox, tnapi->tx_prod);
        tr32_mailbox(tnapi->prodmbox);

        udelay(10);

        /* 350 usec to allow enough time on some 10/100 Mbps devices.  */
        for (i = 0; i < 35; i++) {
                tw32_f(HOSTCC_MODE, tp->coalesce_mode | HOSTCC_MODE_ENABLE |
                       coal_now);

                udelay(10);

                tx_idx = tnapi->hw_status->idx[0].tx_consumer;
                rx_idx = rnapi->hw_status->idx[0].rx_producer;
                if ((tx_idx == tnapi->tx_prod) &&
                    (rx_idx == (rx_start_idx + num_pkts)))
                        break;
        }

        tg3_tx_skb_unmap(tnapi, tnapi->tx_prod - 1, -1);
        dev_kfree_skb(skb);

        if (tx_idx != tnapi->tx_prod)
                goto out;

        if (rx_idx != rx_start_idx + num_pkts)
                goto out;

        val = data_off;
        while (rx_idx != rx_start_idx) {
                desc = &rnapi->rx_rcb[rx_start_idx++];
                desc_idx = desc->opaque & RXD_OPAQUE_INDEX_MASK;
                opaque_key = desc->opaque & RXD_OPAQUE_RING_MASK;

                if ((desc->err_vlan & RXD_ERR_MASK) != 0 &&
                    (desc->err_vlan != RXD_ERR_ODD_NIBBLE_RCVD_MII))
                        goto out;

                rx_len = ((desc->idx_len & RXD_LEN_MASK) >> RXD_LEN_SHIFT)
                         - ETH_FCS_LEN;

                if (!tso_loopback) {
                        if (rx_len != tx_len)
                                goto out;

                        if (pktsz <= TG3_RX_STD_DMA_SZ - ETH_FCS_LEN) {
                                if (opaque_key != RXD_OPAQUE_RING_STD)
                                        goto out;
                        } else {
                                if (opaque_key != RXD_OPAQUE_RING_JUMBO)
                                        goto out;
                        }
                } else if ((desc->type_flags & RXD_FLAG_TCPUDP_CSUM) &&
                           (desc->ip_tcp_csum & RXD_TCPCSUM_MASK)
                            >> RXD_TCPCSUM_SHIFT != 0xffff) {
                        goto out;
                }

                if (opaque_key == RXD_OPAQUE_RING_STD) {
                        rx_skb = tpr->rx_std_buffers[desc_idx].skb;
                        map = dma_unmap_addr(&tpr->rx_std_buffers[desc_idx],
                                             mapping);
                } else if (opaque_key == RXD_OPAQUE_RING_JUMBO) {
                        rx_skb = tpr->rx_jmb_buffers[desc_idx].skb;
                        map = dma_unmap_addr(&tpr->rx_jmb_buffers[desc_idx],
                                             mapping);
                } else
                        goto out;

                pci_dma_sync_single_for_cpu(tp->pdev, map, rx_len,
                                            PCI_DMA_FROMDEVICE);

                for (i = data_off; i < rx_len; i++, val++) {
                        if (*(rx_skb->data + i) != (u8) (val & 0xff))
                                goto out;
                }
        }

        err = 0;

        /* tg3_free_rings will unmap and free the rx_skb */
out:
        return err;
}

#define TG3_STD_LOOPBACK_FAILED         1
#define TG3_JMB_LOOPBACK_FAILED         2
#define TG3_TSO_LOOPBACK_FAILED         4
#define TG3_LOOPBACK_FAILED \
        (TG3_STD_LOOPBACK_FAILED | \
         TG3_JMB_LOOPBACK_FAILED | \
         TG3_TSO_LOOPBACK_FAILED)

static int tg3_test_loopback(struct tg3 *tp, u64 *data, bool do_extlpbk)
{
        int err = -EIO;
        u32 eee_cap;

        eee_cap = tp->phy_flags & TG3_PHYFLG_EEE_CAP;
        tp->phy_flags &= ~TG3_PHYFLG_EEE_CAP;

        if (!netif_running(tp->dev)) {
                data[0] = TG3_LOOPBACK_FAILED;
                data[1] = TG3_LOOPBACK_FAILED;
                if (do_extlpbk)
                        data[2] = TG3_LOOPBACK_FAILED;
                goto done;
        }

        err = tg3_reset_hw(tp, 1);
        if (err) {
                data[0] = TG3_LOOPBACK_FAILED;
                data[1] = TG3_LOOPBACK_FAILED;
                if (do_extlpbk)
                        data[2] = TG3_LOOPBACK_FAILED;
                goto done;
        }

        if (tg3_flag(tp, ENABLE_RSS)) {
                int i;

                /* Reroute all rx packets to the 1st queue */
                for (i = MAC_RSS_INDIR_TBL_0;
                     i < MAC_RSS_INDIR_TBL_0 + TG3_RSS_INDIR_TBL_SIZE; i += 4)
                        tw32(i, 0x0);
        }

        /* HW errata - mac loopback fails in some cases on 5780.
         * Normal traffic and PHY loopback are not affected by
         * errata.  Also, the MAC loopback test is deprecated for
         * all newer ASIC revisions.
         */
        if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5780 &&
            !tg3_flag(tp, CPMU_PRESENT)) {
                tg3_mac_loopback(tp, true);

                if (tg3_run_loopback(tp, ETH_FRAME_LEN, false))
                        data[0] |= TG3_STD_LOOPBACK_FAILED;

                if (tg3_flag(tp, JUMBO_RING_ENABLE) &&
                    tg3_run_loopback(tp, 9000 + ETH_HLEN, false))
                        data[0] |= TG3_JMB_LOOPBACK_FAILED;

                tg3_mac_loopback(tp, false);
        }

        if (!(tp->phy_flags & TG3_PHYFLG_PHY_SERDES) &&
            !tg3_flag(tp, USE_PHYLIB)) {
                int i;

                tg3_phy_lpbk_set(tp, 0, false);

                /* Wait for link */
                for (i = 0; i < 100; i++) {
                        if (tr32(MAC_TX_STATUS) & TX_STATUS_LINK_UP)
                                break;
                        mdelay(1);
                }

                if (tg3_run_loopback(tp, ETH_FRAME_LEN, false))
                        data[1] |= TG3_STD_LOOPBACK_FAILED;
                if (tg3_flag(tp, TSO_CAPABLE) &&
                    tg3_run_loopback(tp, ETH_FRAME_LEN, true))
                        data[1] |= TG3_TSO_LOOPBACK_FAILED;
                if (tg3_flag(tp, JUMBO_RING_ENABLE) &&
                    tg3_run_loopback(tp, 9000 + ETH_HLEN, false))
                        data[1] |= TG3_JMB_LOOPBACK_FAILED;

                if (do_extlpbk) {
                        tg3_phy_lpbk_set(tp, 0, true);

                        /* All link indications report up, but the hardware
                         * isn't really ready for about 20 msec.  Double it
                         * to be sure.
                         */
                        mdelay(40);

                        if (tg3_run_loopback(tp, ETH_FRAME_LEN, false))
                                data[2] |= TG3_STD_LOOPBACK_FAILED;
                        if (tg3_flag(tp, TSO_CAPABLE) &&
                            tg3_run_loopback(tp, ETH_FRAME_LEN, true))
                                data[2] |= TG3_TSO_LOOPBACK_FAILED;
                        if (tg3_flag(tp, JUMBO_RING_ENABLE) &&
                            tg3_run_loopback(tp, 9000 + ETH_HLEN, false))
                                data[2] |= TG3_JMB_LOOPBACK_FAILED;
                }

                /* Re-enable gphy autopowerdown. */
                if (tp->phy_flags & TG3_PHYFLG_ENABLE_APD)
                        tg3_phy_toggle_apd(tp, true);
        }

        err = (data[0] | data[1] | data[2]) ? -EIO : 0;

done:
        tp->phy_flags |= eee_cap;

        return err;
}

static void tg3_self_test(struct net_device *dev, struct ethtool_test *etest,
                          u64 *data)
{
        struct tg3 *tp = netdev_priv(dev);
        bool doextlpbk = etest->flags & ETH_TEST_FL_EXTERNAL_LB;

        if ((tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER) &&
            tg3_power_up(tp)) {
                etest->flags |= ETH_TEST_FL_FAILED;
                memset(data, 1, sizeof(u64) * TG3_NUM_TEST);
                return;
        }

        memset(data, 0, sizeof(u64) * TG3_NUM_TEST);

        if (tg3_test_nvram(tp) != 0) {
                etest->flags |= ETH_TEST_FL_FAILED;
                data[0] = 1;
        }
        if (!doextlpbk && tg3_test_link(tp)) {
                etest->flags |= ETH_TEST_FL_FAILED;
                data[1] = 1;
        }
        if (etest->flags & ETH_TEST_FL_OFFLINE) {
                int err, err2 = 0, irq_sync = 0;

                if (netif_running(dev)) {
                        tg3_phy_stop(tp);
                        tg3_netif_stop(tp);
                        irq_sync = 1;
                }

                tg3_full_lock(tp, irq_sync);

                tg3_halt(tp, RESET_KIND_SUSPEND, 1);
                err = tg3_nvram_lock(tp);
                tg3_halt_cpu(tp, RX_CPU_BASE);
                if (!tg3_flag(tp, 5705_PLUS))
                        tg3_halt_cpu(tp, TX_CPU_BASE);
                if (!err)
                        tg3_nvram_unlock(tp);

                if (tp->phy_flags & TG3_PHYFLG_MII_SERDES)
                        tg3_phy_reset(tp);

                if (tg3_test_registers(tp) != 0) {
                        etest->flags |= ETH_TEST_FL_FAILED;
                        data[2] = 1;
                }

                if (tg3_test_memory(tp) != 0) {
                        etest->flags |= ETH_TEST_FL_FAILED;
                        data[3] = 1;
                }

                if (doextlpbk)
                        etest->flags |= ETH_TEST_FL_EXTERNAL_LB_DONE;

                if (tg3_test_loopback(tp, &data[4], doextlpbk))
                        etest->flags |= ETH_TEST_FL_FAILED;

                tg3_full_unlock(tp);

                if (tg3_test_interrupt(tp) != 0) {
                        etest->flags |= ETH_TEST_FL_FAILED;
                        data[7] = 1;
                }

                tg3_full_lock(tp, 0);

                tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
                if (netif_running(dev)) {
                        tg3_flag_set(tp, INIT_COMPLETE);
                        err2 = tg3_restart_hw(tp, 1);
                        if (!err2)
                                tg3_netif_start(tp);
                }

                tg3_full_unlock(tp);

                if (irq_sync && !err2)
                        tg3_phy_start(tp);
        }
        if (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER)
                tg3_power_down(tp);

}

static int tg3_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
        struct mii_ioctl_data *data = if_mii(ifr);
        struct tg3 *tp = netdev_priv(dev);
        int err;

        if (tg3_flag(tp, USE_PHYLIB)) {
                struct phy_device *phydev;
                if (!(tp->phy_flags & TG3_PHYFLG_IS_CONNECTED))
                        return -EAGAIN;
                phydev = tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR];
                return phy_mii_ioctl(phydev, ifr, cmd);
        }

        switch (cmd) {
        case SIOCGMIIPHY:
                data->phy_id = tp->phy_addr;

                /* fallthru */
        case SIOCGMIIREG: {
                u32 mii_regval;

                if (tp->phy_flags & TG3_PHYFLG_PHY_SERDES)
                        break;                  /* We have no PHY */

                if (!netif_running(dev))
                        return -EAGAIN;

                spin_lock_bh(&tp->lock);
                err = tg3_readphy(tp, data->reg_num & 0x1f, &mii_regval);
                spin_unlock_bh(&tp->lock);

                data->val_out = mii_regval;

                return err;
        }

        case SIOCSMIIREG:
                if (tp->phy_flags & TG3_PHYFLG_PHY_SERDES)
                        break;                  /* We have no PHY */

                if (!netif_running(dev))
                        return -EAGAIN;

                spin_lock_bh(&tp->lock);
                err = tg3_writephy(tp, data->reg_num & 0x1f, data->val_in);
                spin_unlock_bh(&tp->lock);

                return err;

        default:
                /* do nothing */
                break;
        }
        return -EOPNOTSUPP;
}

static int tg3_get_coalesce(struct net_device *dev, struct ethtool_coalesce *ec)
{
        struct tg3 *tp = netdev_priv(dev);

        memcpy(ec, &tp->coal, sizeof(*ec));
        return 0;
}

static int tg3_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec)
{
        struct tg3 *tp = netdev_priv(dev);
        u32 max_rxcoal_tick_int = 0, max_txcoal_tick_int = 0;
        u32 max_stat_coal_ticks = 0, min_stat_coal_ticks = 0;

        if (!tg3_flag(tp, 5705_PLUS)) {
                max_rxcoal_tick_int = MAX_RXCOAL_TICK_INT;
                max_txcoal_tick_int = MAX_TXCOAL_TICK_INT;
                max_stat_coal_ticks = MAX_STAT_COAL_TICKS;
                min_stat_coal_ticks = MIN_STAT_COAL_TICKS;
        }

        if ((ec->rx_coalesce_usecs > MAX_RXCOL_TICKS) ||
            (ec->tx_coalesce_usecs > MAX_TXCOL_TICKS) ||
            (ec->rx_max_coalesced_frames > MAX_RXMAX_FRAMES) ||
            (ec->tx_max_coalesced_frames > MAX_TXMAX_FRAMES) ||
            (ec->rx_coalesce_usecs_irq > max_rxcoal_tick_int) ||
            (ec->tx_coalesce_usecs_irq > max_txcoal_tick_int) ||
            (ec->rx_max_coalesced_frames_irq > MAX_RXCOAL_MAXF_INT) ||
            (ec->tx_max_coalesced_frames_irq > MAX_TXCOAL_MAXF_INT) ||
            (ec->stats_block_coalesce_usecs > max_stat_coal_ticks) ||
            (ec->stats_block_coalesce_usecs < min_stat_coal_ticks))
                return -EINVAL;

        /* No rx interrupts will be generated if both are zero */
        if ((ec->rx_coalesce_usecs == 0) &&
            (ec->rx_max_coalesced_frames == 0))
                return -EINVAL;

        /* No tx interrupts will be generated if both are zero */
        if ((ec->tx_coalesce_usecs == 0) &&
            (ec->tx_max_coalesced_frames == 0))
                return -EINVAL;

        /* Only copy relevant parameters, ignore all others. */
        tp->coal.rx_coalesce_usecs = ec->rx_coalesce_usecs;
        tp->coal.tx_coalesce_usecs = ec->tx_coalesce_usecs;
        tp->coal.rx_max_coalesced_frames = ec->rx_max_coalesced_frames;
        tp->coal.tx_max_coalesced_frames = ec->tx_max_coalesced_frames;
        tp->coal.rx_coalesce_usecs_irq = ec->rx_coalesce_usecs_irq;
        tp->coal.tx_coalesce_usecs_irq = ec->tx_coalesce_usecs_irq;
        tp->coal.rx_max_coalesced_frames_irq = ec->rx_max_coalesced_frames_irq;
        tp->coal.tx_max_coalesced_frames_irq = ec->tx_max_coalesced_frames_irq;
        tp->coal.stats_block_coalesce_usecs = ec->stats_block_coalesce_usecs;

        if (netif_running(dev)) {
                tg3_full_lock(tp, 0);
                __tg3_set_coalesce(tp, &tp->coal);
                tg3_full_unlock(tp);
        }
        return 0;
}

static const struct ethtool_ops tg3_ethtool_ops = {
        .get_settings           = tg3_get_settings,
        .set_settings           = tg3_set_settings,
        .get_drvinfo            = tg3_get_drvinfo,
        .get_regs_len           = tg3_get_regs_len,
        .get_regs               = tg3_get_regs,
        .get_wol                = tg3_get_wol,
        .set_wol                = tg3_set_wol,
        .get_msglevel           = tg3_get_msglevel,
        .set_msglevel           = tg3_set_msglevel,
        .nway_reset             = tg3_nway_reset,
        .get_link               = ethtool_op_get_link,
        .get_eeprom_len         = tg3_get_eeprom_len,
        .get_eeprom             = tg3_get_eeprom,
        .set_eeprom             = tg3_set_eeprom,
        .get_ringparam          = tg3_get_ringparam,
        .set_ringparam          = tg3_set_ringparam,
        .get_pauseparam         = tg3_get_pauseparam,
        .set_pauseparam         = tg3_set_pauseparam,
        .self_test              = tg3_self_test,
        .get_strings            = tg3_get_strings,
        .set_phys_id            = tg3_set_phys_id,
        .get_ethtool_stats      = tg3_get_ethtool_stats,
        .get_coalesce           = tg3_get_coalesce,
        .set_coalesce           = tg3_set_coalesce,
        .get_sset_count         = tg3_get_sset_count,
};

static void __devinit tg3_get_eeprom_size(struct tg3 *tp)
{
        u32 cursize, val, magic;

        tp->nvram_size = EEPROM_CHIP_SIZE;

        if (tg3_nvram_read(tp, 0, &magic) != 0)
                return;

        if ((magic != TG3_EEPROM_MAGIC) &&
            ((magic & TG3_EEPROM_MAGIC_FW_MSK) != TG3_EEPROM_MAGIC_FW) &&
            ((magic & TG3_EEPROM_MAGIC_HW_MSK) != TG3_EEPROM_MAGIC_HW))
                return;

        /*
         * Size the chip by reading offsets at increasing powers of two.
         * When we encounter our validation signature, we know the addressing
         * has wrapped around, and thus have our chip size.
         */
        cursize = 0x10;

        while (cursize < tp->nvram_size) {
                if (tg3_nvram_read(tp, cursize, &val) != 0)
                        return;

                if (val == magic)
                        break;

                cursize <<= 1;
        }

        tp->nvram_size = cursize;
}

static void __devinit tg3_get_nvram_size(struct tg3 *tp)
{
        u32 val;

        if (tg3_flag(tp, NO_NVRAM) || tg3_nvram_read(tp, 0, &val) != 0)
                return;

        /* Selfboot format */
        if (val != TG3_EEPROM_MAGIC) {
                tg3_get_eeprom_size(tp);
                return;
        }

        if (tg3_nvram_read(tp, 0xf0, &val) == 0) {
                if (val != 0) {
                        /* This is confusing.  We want to operate on the
                         * 16-bit value at offset 0xf2.  The tg3_nvram_read()
                         * call will read from NVRAM and byteswap the data
                         * according to the byteswapping settings for all
                         * other register accesses.  This ensures the data we
                         * want will always reside in the lower 16-bits.
                         * However, the data in NVRAM is in LE format, which
                         * means the data from the NVRAM read will always be
                         * opposite the endianness of the CPU.  The 16-bit
                         * byteswap then brings the data to CPU endianness.
                         */
                        tp->nvram_size = swab16((u16)(val & 0x0000ffff)) * 1024;
                        return;
                }
        }
        tp->nvram_size = TG3_NVRAM_SIZE_512KB;
}

static void __devinit tg3_get_nvram_info(struct tg3 *tp)
{
        u32 nvcfg1;

        nvcfg1 = tr32(NVRAM_CFG1);
        if (nvcfg1 & NVRAM_CFG1_FLASHIF_ENAB) {
                tg3_flag_set(tp, FLASH);
        } else {
                nvcfg1 &= ~NVRAM_CFG1_COMPAT_BYPASS;
                tw32(NVRAM_CFG1, nvcfg1);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750 ||
            tg3_flag(tp, 5780_CLASS)) {
                switch (nvcfg1 & NVRAM_CFG1_VENDOR_MASK) {
                case FLASH_VENDOR_ATMEL_FLASH_BUFFERED:
                        tp->nvram_jedecnum = JEDEC_ATMEL;
                        tp->nvram_pagesize = ATMEL_AT45DB0X1B_PAGE_SIZE;
                        tg3_flag_set(tp, NVRAM_BUFFERED);
                        break;
                case FLASH_VENDOR_ATMEL_FLASH_UNBUFFERED:
                        tp->nvram_jedecnum = JEDEC_ATMEL;
                        tp->nvram_pagesize = ATMEL_AT25F512_PAGE_SIZE;
                        break;
                case FLASH_VENDOR_ATMEL_EEPROM:
                        tp->nvram_jedecnum = JEDEC_ATMEL;
                        tp->nvram_pagesize = ATMEL_AT24C512_CHIP_SIZE;
                        tg3_flag_set(tp, NVRAM_BUFFERED);
                        break;
                case FLASH_VENDOR_ST:
                        tp->nvram_jedecnum = JEDEC_ST;
                        tp->nvram_pagesize = ST_M45PEX0_PAGE_SIZE;
                        tg3_flag_set(tp, NVRAM_BUFFERED);
                        break;
                case FLASH_VENDOR_SAIFUN:
                        tp->nvram_jedecnum = JEDEC_SAIFUN;
                        tp->nvram_pagesize = SAIFUN_SA25F0XX_PAGE_SIZE;
                        break;
                case FLASH_VENDOR_SST_SMALL:
                case FLASH_VENDOR_SST_LARGE:
                        tp->nvram_jedecnum = JEDEC_SST;
                        tp->nvram_pagesize = SST_25VF0X0_PAGE_SIZE;
                        break;
                }
        } else {
                tp->nvram_jedecnum = JEDEC_ATMEL;
                tp->nvram_pagesize = ATMEL_AT45DB0X1B_PAGE_SIZE;
                tg3_flag_set(tp, NVRAM_BUFFERED);
        }
}

static void __devinit tg3_nvram_get_pagesize(struct tg3 *tp, u32 nvmcfg1)
{
        switch (nvmcfg1 & NVRAM_CFG1_5752PAGE_SIZE_MASK) {
        case FLASH_5752PAGE_SIZE_256:
                tp->nvram_pagesize = 256;
                break;
        case FLASH_5752PAGE_SIZE_512:
                tp->nvram_pagesize = 512;
                break;
        case FLASH_5752PAGE_SIZE_1K:
                tp->nvram_pagesize = 1024;
                break;
        case FLASH_5752PAGE_SIZE_2K:
                tp->nvram_pagesize = 2048;
                break;
        case FLASH_5752PAGE_SIZE_4K:
                tp->nvram_pagesize = 4096;
                break;
        case FLASH_5752PAGE_SIZE_264:
                tp->nvram_pagesize = 264;
                break;
        case FLASH_5752PAGE_SIZE_528:
                tp->nvram_pagesize = 528;
                break;
        }
}

static void __devinit tg3_get_5752_nvram_info(struct tg3 *tp)
{
        u32 nvcfg1;

        nvcfg1 = tr32(NVRAM_CFG1);

        /* NVRAM protection for TPM */
        if (nvcfg1 & (1 << 27))
                tg3_flag_set(tp, PROTECTED_NVRAM);

        switch (nvcfg1 & NVRAM_CFG1_5752VENDOR_MASK) {
        case FLASH_5752VENDOR_ATMEL_EEPROM_64KHZ:
        case FLASH_5752VENDOR_ATMEL_EEPROM_376KHZ:
                tp->nvram_jedecnum = JEDEC_ATMEL;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                break;
        case FLASH_5752VENDOR_ATMEL_FLASH_BUFFERED:
                tp->nvram_jedecnum = JEDEC_ATMEL;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);
                break;
        case FLASH_5752VENDOR_ST_M45PE10:
        case FLASH_5752VENDOR_ST_M45PE20:
        case FLASH_5752VENDOR_ST_M45PE40:
                tp->nvram_jedecnum = JEDEC_ST;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);
                break;
        }

        if (tg3_flag(tp, FLASH)) {
                tg3_nvram_get_pagesize(tp, nvcfg1);
        } else {
                /* For eeprom, set pagesize to maximum eeprom size */
                tp->nvram_pagesize = ATMEL_AT24C512_CHIP_SIZE;

                nvcfg1 &= ~NVRAM_CFG1_COMPAT_BYPASS;
                tw32(NVRAM_CFG1, nvcfg1);
        }
}

static void __devinit tg3_get_5755_nvram_info(struct tg3 *tp)
{
        u32 nvcfg1, protect = 0;

        nvcfg1 = tr32(NVRAM_CFG1);

        /* NVRAM protection for TPM */
        if (nvcfg1 & (1 << 27)) {
                tg3_flag_set(tp, PROTECTED_NVRAM);
                protect = 1;
        }

        nvcfg1 &= NVRAM_CFG1_5752VENDOR_MASK;
        switch (nvcfg1) {
        case FLASH_5755VENDOR_ATMEL_FLASH_1:
        case FLASH_5755VENDOR_ATMEL_FLASH_2:
        case FLASH_5755VENDOR_ATMEL_FLASH_3:
        case FLASH_5755VENDOR_ATMEL_FLASH_5:
                tp->nvram_jedecnum = JEDEC_ATMEL;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);
                tp->nvram_pagesize = 264;
                if (nvcfg1 == FLASH_5755VENDOR_ATMEL_FLASH_1 ||
                    nvcfg1 == FLASH_5755VENDOR_ATMEL_FLASH_5)
                        tp->nvram_size = (protect ? 0x3e200 :
                                          TG3_NVRAM_SIZE_512KB);
                else if (nvcfg1 == FLASH_5755VENDOR_ATMEL_FLASH_2)
                        tp->nvram_size = (protect ? 0x1f200 :
                                          TG3_NVRAM_SIZE_256KB);
                else
                        tp->nvram_size = (protect ? 0x1f200 :
                                          TG3_NVRAM_SIZE_128KB);
                break;
        case FLASH_5752VENDOR_ST_M45PE10:
        case FLASH_5752VENDOR_ST_M45PE20:
        case FLASH_5752VENDOR_ST_M45PE40:
                tp->nvram_jedecnum = JEDEC_ST;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);
                tp->nvram_pagesize = 256;
                if (nvcfg1 == FLASH_5752VENDOR_ST_M45PE10)
                        tp->nvram_size = (protect ?
                                          TG3_NVRAM_SIZE_64KB :
                                          TG3_NVRAM_SIZE_128KB);
                else if (nvcfg1 == FLASH_5752VENDOR_ST_M45PE20)
                        tp->nvram_size = (protect ?
                                          TG3_NVRAM_SIZE_64KB :
                                          TG3_NVRAM_SIZE_256KB);
                else
                        tp->nvram_size = (protect ?
                                          TG3_NVRAM_SIZE_128KB :
                                          TG3_NVRAM_SIZE_512KB);
                break;
        }
}

static void __devinit tg3_get_5787_nvram_info(struct tg3 *tp)
{
        u32 nvcfg1;

        nvcfg1 = tr32(NVRAM_CFG1);

        switch (nvcfg1 & NVRAM_CFG1_5752VENDOR_MASK) {
        case FLASH_5787VENDOR_ATMEL_EEPROM_64KHZ:
        case FLASH_5787VENDOR_ATMEL_EEPROM_376KHZ:
        case FLASH_5787VENDOR_MICRO_EEPROM_64KHZ:
        case FLASH_5787VENDOR_MICRO_EEPROM_376KHZ:
                tp->nvram_jedecnum = JEDEC_ATMEL;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tp->nvram_pagesize = ATMEL_AT24C512_CHIP_SIZE;

                nvcfg1 &= ~NVRAM_CFG1_COMPAT_BYPASS;
                tw32(NVRAM_CFG1, nvcfg1);
                break;
        case FLASH_5752VENDOR_ATMEL_FLASH_BUFFERED:
        case FLASH_5755VENDOR_ATMEL_FLASH_1:
        case FLASH_5755VENDOR_ATMEL_FLASH_2:
        case FLASH_5755VENDOR_ATMEL_FLASH_3:
                tp->nvram_jedecnum = JEDEC_ATMEL;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);
                tp->nvram_pagesize = 264;
                break;
        case FLASH_5752VENDOR_ST_M45PE10:
        case FLASH_5752VENDOR_ST_M45PE20:
        case FLASH_5752VENDOR_ST_M45PE40:
                tp->nvram_jedecnum = JEDEC_ST;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);
                tp->nvram_pagesize = 256;
                break;
        }
}

static void __devinit tg3_get_5761_nvram_info(struct tg3 *tp)
{
        u32 nvcfg1, protect = 0;

        nvcfg1 = tr32(NVRAM_CFG1);

        /* NVRAM protection for TPM */
        if (nvcfg1 & (1 << 27)) {
                tg3_flag_set(tp, PROTECTED_NVRAM);
                protect = 1;
        }

        nvcfg1 &= NVRAM_CFG1_5752VENDOR_MASK;
        switch (nvcfg1) {
        case FLASH_5761VENDOR_ATMEL_ADB021D:
        case FLASH_5761VENDOR_ATMEL_ADB041D:
        case FLASH_5761VENDOR_ATMEL_ADB081D:
        case FLASH_5761VENDOR_ATMEL_ADB161D:
        case FLASH_5761VENDOR_ATMEL_MDB021D:
        case FLASH_5761VENDOR_ATMEL_MDB041D:
        case FLASH_5761VENDOR_ATMEL_MDB081D:
        case FLASH_5761VENDOR_ATMEL_MDB161D:
                tp->nvram_jedecnum = JEDEC_ATMEL;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);
                tg3_flag_set(tp, NO_NVRAM_ADDR_TRANS);
                tp->nvram_pagesize = 256;
                break;
        case FLASH_5761VENDOR_ST_A_M45PE20:
        case FLASH_5761VENDOR_ST_A_M45PE40:
        case FLASH_5761VENDOR_ST_A_M45PE80:
        case FLASH_5761VENDOR_ST_A_M45PE16:
        case FLASH_5761VENDOR_ST_M_M45PE20:
        case FLASH_5761VENDOR_ST_M_M45PE40:
        case FLASH_5761VENDOR_ST_M_M45PE80:
        case FLASH_5761VENDOR_ST_M_M45PE16:
                tp->nvram_jedecnum = JEDEC_ST;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);
                tp->nvram_pagesize = 256;
                break;
        }

        if (protect) {
                tp->nvram_size = tr32(NVRAM_ADDR_LOCKOUT);
        } else {
                switch (nvcfg1) {
                case FLASH_5761VENDOR_ATMEL_ADB161D:
                case FLASH_5761VENDOR_ATMEL_MDB161D:
                case FLASH_5761VENDOR_ST_A_M45PE16:
                case FLASH_5761VENDOR_ST_M_M45PE16:
                        tp->nvram_size = TG3_NVRAM_SIZE_2MB;
                        break;
                case FLASH_5761VENDOR_ATMEL_ADB081D:
                case FLASH_5761VENDOR_ATMEL_MDB081D:
                case FLASH_5761VENDOR_ST_A_M45PE80:
                case FLASH_5761VENDOR_ST_M_M45PE80:
                        tp->nvram_size = TG3_NVRAM_SIZE_1MB;
                        break;
                case FLASH_5761VENDOR_ATMEL_ADB041D:
                case FLASH_5761VENDOR_ATMEL_MDB041D:
                case FLASH_5761VENDOR_ST_A_M45PE40:
                case FLASH_5761VENDOR_ST_M_M45PE40:
                        tp->nvram_size = TG3_NVRAM_SIZE_512KB;
                        break;
                case FLASH_5761VENDOR_ATMEL_ADB021D:
                case FLASH_5761VENDOR_ATMEL_MDB021D:
                case FLASH_5761VENDOR_ST_A_M45PE20:
                case FLASH_5761VENDOR_ST_M_M45PE20:
                        tp->nvram_size = TG3_NVRAM_SIZE_256KB;
                        break;
                }
        }
}

static void __devinit tg3_get_5906_nvram_info(struct tg3 *tp)
{
        tp->nvram_jedecnum = JEDEC_ATMEL;
        tg3_flag_set(tp, NVRAM_BUFFERED);
        tp->nvram_pagesize = ATMEL_AT24C512_CHIP_SIZE;
}

static void __devinit tg3_get_57780_nvram_info(struct tg3 *tp)
{
        u32 nvcfg1;

        nvcfg1 = tr32(NVRAM_CFG1);

        switch (nvcfg1 & NVRAM_CFG1_5752VENDOR_MASK) {
        case FLASH_5787VENDOR_ATMEL_EEPROM_376KHZ:
        case FLASH_5787VENDOR_MICRO_EEPROM_376KHZ:
                tp->nvram_jedecnum = JEDEC_ATMEL;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tp->nvram_pagesize = ATMEL_AT24C512_CHIP_SIZE;

                nvcfg1 &= ~NVRAM_CFG1_COMPAT_BYPASS;
                tw32(NVRAM_CFG1, nvcfg1);
                return;
        case FLASH_5752VENDOR_ATMEL_FLASH_BUFFERED:
        case FLASH_57780VENDOR_ATMEL_AT45DB011D:
        case FLASH_57780VENDOR_ATMEL_AT45DB011B:
        case FLASH_57780VENDOR_ATMEL_AT45DB021D:
        case FLASH_57780VENDOR_ATMEL_AT45DB021B:
        case FLASH_57780VENDOR_ATMEL_AT45DB041D:
        case FLASH_57780VENDOR_ATMEL_AT45DB041B:
                tp->nvram_jedecnum = JEDEC_ATMEL;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);

                switch (nvcfg1 & NVRAM_CFG1_5752VENDOR_MASK) {
                case FLASH_5752VENDOR_ATMEL_FLASH_BUFFERED:
                case FLASH_57780VENDOR_ATMEL_AT45DB011D:
                case FLASH_57780VENDOR_ATMEL_AT45DB011B:
                        tp->nvram_size = TG3_NVRAM_SIZE_128KB;
                        break;
                case FLASH_57780VENDOR_ATMEL_AT45DB021D:
                case FLASH_57780VENDOR_ATMEL_AT45DB021B:
                        tp->nvram_size = TG3_NVRAM_SIZE_256KB;
                        break;
                case FLASH_57780VENDOR_ATMEL_AT45DB041D:
                case FLASH_57780VENDOR_ATMEL_AT45DB041B:
                        tp->nvram_size = TG3_NVRAM_SIZE_512KB;
                        break;
                }
                break;
        case FLASH_5752VENDOR_ST_M45PE10:
        case FLASH_5752VENDOR_ST_M45PE20:
        case FLASH_5752VENDOR_ST_M45PE40:
                tp->nvram_jedecnum = JEDEC_ST;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);

                switch (nvcfg1 & NVRAM_CFG1_5752VENDOR_MASK) {
                case FLASH_5752VENDOR_ST_M45PE10:
                        tp->nvram_size = TG3_NVRAM_SIZE_128KB;
                        break;
                case FLASH_5752VENDOR_ST_M45PE20:
                        tp->nvram_size = TG3_NVRAM_SIZE_256KB;
                        break;
                case FLASH_5752VENDOR_ST_M45PE40:
                        tp->nvram_size = TG3_NVRAM_SIZE_512KB;
                        break;
                }
                break;
        default:
                tg3_flag_set(tp, NO_NVRAM);
                return;
        }

        tg3_nvram_get_pagesize(tp, nvcfg1);
        if (tp->nvram_pagesize != 264 && tp->nvram_pagesize != 528)
                tg3_flag_set(tp, NO_NVRAM_ADDR_TRANS);
}


static void __devinit tg3_get_5717_nvram_info(struct tg3 *tp)
{
        u32 nvcfg1;

        nvcfg1 = tr32(NVRAM_CFG1);

        switch (nvcfg1 & NVRAM_CFG1_5752VENDOR_MASK) {
        case FLASH_5717VENDOR_ATMEL_EEPROM:
        case FLASH_5717VENDOR_MICRO_EEPROM:
                tp->nvram_jedecnum = JEDEC_ATMEL;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tp->nvram_pagesize = ATMEL_AT24C512_CHIP_SIZE;

                nvcfg1 &= ~NVRAM_CFG1_COMPAT_BYPASS;
                tw32(NVRAM_CFG1, nvcfg1);
                return;
        case FLASH_5717VENDOR_ATMEL_MDB011D:
        case FLASH_5717VENDOR_ATMEL_ADB011B:
        case FLASH_5717VENDOR_ATMEL_ADB011D:
        case FLASH_5717VENDOR_ATMEL_MDB021D:
        case FLASH_5717VENDOR_ATMEL_ADB021B:
        case FLASH_5717VENDOR_ATMEL_ADB021D:
        case FLASH_5717VENDOR_ATMEL_45USPT:
                tp->nvram_jedecnum = JEDEC_ATMEL;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);

                switch (nvcfg1 & NVRAM_CFG1_5752VENDOR_MASK) {
                case FLASH_5717VENDOR_ATMEL_MDB021D:
                        /* Detect size with tg3_nvram_get_size() */
                        break;
                case FLASH_5717VENDOR_ATMEL_ADB021B:
                case FLASH_5717VENDOR_ATMEL_ADB021D:
                        tp->nvram_size = TG3_NVRAM_SIZE_256KB;
                        break;
                default:
                        tp->nvram_size = TG3_NVRAM_SIZE_128KB;
                        break;
                }
                break;
        case FLASH_5717VENDOR_ST_M_M25PE10:
        case FLASH_5717VENDOR_ST_A_M25PE10:
        case FLASH_5717VENDOR_ST_M_M45PE10:
        case FLASH_5717VENDOR_ST_A_M45PE10:
        case FLASH_5717VENDOR_ST_M_M25PE20:
        case FLASH_5717VENDOR_ST_A_M25PE20:
        case FLASH_5717VENDOR_ST_M_M45PE20:
        case FLASH_5717VENDOR_ST_A_M45PE20:
        case FLASH_5717VENDOR_ST_25USPT:
        case FLASH_5717VENDOR_ST_45USPT:
                tp->nvram_jedecnum = JEDEC_ST;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);

                switch (nvcfg1 & NVRAM_CFG1_5752VENDOR_MASK) {
                case FLASH_5717VENDOR_ST_M_M25PE20:
                case FLASH_5717VENDOR_ST_M_M45PE20:
                        /* Detect size with tg3_nvram_get_size() */
                        break;
                case FLASH_5717VENDOR_ST_A_M25PE20:
                case FLASH_5717VENDOR_ST_A_M45PE20:
                        tp->nvram_size = TG3_NVRAM_SIZE_256KB;
                        break;
                default:
                        tp->nvram_size = TG3_NVRAM_SIZE_128KB;
                        break;
                }
                break;
        default:
                tg3_flag_set(tp, NO_NVRAM);
                return;
        }

        tg3_nvram_get_pagesize(tp, nvcfg1);
        if (tp->nvram_pagesize != 264 && tp->nvram_pagesize != 528)
                tg3_flag_set(tp, NO_NVRAM_ADDR_TRANS);
}

static void __devinit tg3_get_5720_nvram_info(struct tg3 *tp)
{
        u32 nvcfg1, nvmpinstrp;

        nvcfg1 = tr32(NVRAM_CFG1);
        nvmpinstrp = nvcfg1 & NVRAM_CFG1_5752VENDOR_MASK;

        switch (nvmpinstrp) {
        case FLASH_5720_EEPROM_HD:
        case FLASH_5720_EEPROM_LD:
                tp->nvram_jedecnum = JEDEC_ATMEL;
                tg3_flag_set(tp, NVRAM_BUFFERED);

                nvcfg1 &= ~NVRAM_CFG1_COMPAT_BYPASS;
                tw32(NVRAM_CFG1, nvcfg1);
                if (nvmpinstrp == FLASH_5720_EEPROM_HD)
                        tp->nvram_pagesize = ATMEL_AT24C512_CHIP_SIZE;
                else
                        tp->nvram_pagesize = ATMEL_AT24C02_CHIP_SIZE;
                return;
        case FLASH_5720VENDOR_M_ATMEL_DB011D:
        case FLASH_5720VENDOR_A_ATMEL_DB011B:
        case FLASH_5720VENDOR_A_ATMEL_DB011D:
        case FLASH_5720VENDOR_M_ATMEL_DB021D:
        case FLASH_5720VENDOR_A_ATMEL_DB021B:
        case FLASH_5720VENDOR_A_ATMEL_DB021D:
        case FLASH_5720VENDOR_M_ATMEL_DB041D:
        case FLASH_5720VENDOR_A_ATMEL_DB041B:
        case FLASH_5720VENDOR_A_ATMEL_DB041D:
        case FLASH_5720VENDOR_M_ATMEL_DB081D:
        case FLASH_5720VENDOR_A_ATMEL_DB081D:
        case FLASH_5720VENDOR_ATMEL_45USPT:
                tp->nvram_jedecnum = JEDEC_ATMEL;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);

                switch (nvmpinstrp) {
                case FLASH_5720VENDOR_M_ATMEL_DB021D:
                case FLASH_5720VENDOR_A_ATMEL_DB021B:
                case FLASH_5720VENDOR_A_ATMEL_DB021D:
                        tp->nvram_size = TG3_NVRAM_SIZE_256KB;
                        break;
                case FLASH_5720VENDOR_M_ATMEL_DB041D:
                case FLASH_5720VENDOR_A_ATMEL_DB041B:
                case FLASH_5720VENDOR_A_ATMEL_DB041D:
                        tp->nvram_size = TG3_NVRAM_SIZE_512KB;
                        break;
                case FLASH_5720VENDOR_M_ATMEL_DB081D:
                case FLASH_5720VENDOR_A_ATMEL_DB081D:
                        tp->nvram_size = TG3_NVRAM_SIZE_1MB;
                        break;
                default:
                        tp->nvram_size = TG3_NVRAM_SIZE_128KB;
                        break;
                }
                break;
        case FLASH_5720VENDOR_M_ST_M25PE10:
        case FLASH_5720VENDOR_M_ST_M45PE10:
        case FLASH_5720VENDOR_A_ST_M25PE10:
        case FLASH_5720VENDOR_A_ST_M45PE10:
        case FLASH_5720VENDOR_M_ST_M25PE20:
        case FLASH_5720VENDOR_M_ST_M45PE20:
        case FLASH_5720VENDOR_A_ST_M25PE20:
        case FLASH_5720VENDOR_A_ST_M45PE20:
        case FLASH_5720VENDOR_M_ST_M25PE40:
        case FLASH_5720VENDOR_M_ST_M45PE40:
        case FLASH_5720VENDOR_A_ST_M25PE40:
        case FLASH_5720VENDOR_A_ST_M45PE40:
        case FLASH_5720VENDOR_M_ST_M25PE80:
        case FLASH_5720VENDOR_M_ST_M45PE80:
        case FLASH_5720VENDOR_A_ST_M25PE80:
        case FLASH_5720VENDOR_A_ST_M45PE80:
        case FLASH_5720VENDOR_ST_25USPT:
        case FLASH_5720VENDOR_ST_45USPT:
                tp->nvram_jedecnum = JEDEC_ST;
                tg3_flag_set(tp, NVRAM_BUFFERED);
                tg3_flag_set(tp, FLASH);

                switch (nvmpinstrp) {
                case FLASH_5720VENDOR_M_ST_M25PE20:
                case FLASH_5720VENDOR_M_ST_M45PE20:
                case FLASH_5720VENDOR_A_ST_M25PE20:
                case FLASH_5720VENDOR_A_ST_M45PE20:
                        tp->nvram_size = TG3_NVRAM_SIZE_256KB;
                        break;
                case FLASH_5720VENDOR_M_ST_M25PE40:
                case FLASH_5720VENDOR_M_ST_M45PE40:
                case FLASH_5720VENDOR_A_ST_M25PE40:
                case FLASH_5720VENDOR_A_ST_M45PE40:
                        tp->nvram_size = TG3_NVRAM_SIZE_512KB;
                        break;
                case FLASH_5720VENDOR_M_ST_M25PE80:
                case FLASH_5720VENDOR_M_ST_M45PE80:
                case FLASH_5720VENDOR_A_ST_M25PE80:
                case FLASH_5720VENDOR_A_ST_M45PE80:
                        tp->nvram_size = TG3_NVRAM_SIZE_1MB;
                        break;
                default:
                        tp->nvram_size = TG3_NVRAM_SIZE_128KB;
                        break;
                }
                break;
        default:
                tg3_flag_set(tp, NO_NVRAM);
                return;
        }

        tg3_nvram_get_pagesize(tp, nvcfg1);
        if (tp->nvram_pagesize != 264 && tp->nvram_pagesize != 528)
                tg3_flag_set(tp, NO_NVRAM_ADDR_TRANS);
}

/* Chips other than 5700/5701 use the NVRAM for fetching info. */
static void __devinit tg3_nvram_init(struct tg3 *tp)
{
        tw32_f(GRC_EEPROM_ADDR,
             (EEPROM_ADDR_FSM_RESET |
              (EEPROM_DEFAULT_CLOCK_PERIOD <<
               EEPROM_ADDR_CLKPERD_SHIFT)));

        msleep(1);

        /* Enable seeprom accesses. */
        tw32_f(GRC_LOCAL_CTRL,
             tr32(GRC_LOCAL_CTRL) | GRC_LCLCTRL_AUTO_SEEPROM);
        udelay(100);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700 &&
            GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5701) {
                tg3_flag_set(tp, NVRAM);

                if (tg3_nvram_lock(tp)) {
                        netdev_warn(tp->dev,
                                    "Cannot get nvram lock, %s failed\n",
                                    __func__);
                        return;
                }
                tg3_enable_nvram_access(tp);

                tp->nvram_size = 0;

                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752)
                        tg3_get_5752_nvram_info(tp);
                else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5755)
                        tg3_get_5755_nvram_info(tp);
                else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5787 ||
                         GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 ||
                         GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785)
                        tg3_get_5787_nvram_info(tp);
                else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761)
                        tg3_get_5761_nvram_info(tp);
                else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906)
                        tg3_get_5906_nvram_info(tp);
                else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780 ||
                         GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765)
                        tg3_get_57780_nvram_info(tp);
                else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
                         GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
                        tg3_get_5717_nvram_info(tp);
                else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720)
                        tg3_get_5720_nvram_info(tp);
                else
                        tg3_get_nvram_info(tp);

                if (tp->nvram_size == 0)
                        tg3_get_nvram_size(tp);

                tg3_disable_nvram_access(tp);
                tg3_nvram_unlock(tp);

        } else {
                tg3_flag_clear(tp, NVRAM);
                tg3_flag_clear(tp, NVRAM_BUFFERED);

                tg3_get_eeprom_size(tp);
        }
}

static int tg3_nvram_write_block_using_eeprom(struct tg3 *tp,
                                    u32 offset, u32 len, u8 *buf)
{
        int i, j, rc = 0;
        u32 val;

        for (i = 0; i < len; i += 4) {
                u32 addr;
                __be32 data;

                addr = offset + i;

                memcpy(&data, buf + i, 4);

                /*
                 * The SEEPROM interface expects the data to always be opposite
                 * the native endian format.  We accomplish this by reversing
                 * all the operations that would have been performed on the
                 * data from a call to tg3_nvram_read_be32().
                 */
                tw32(GRC_EEPROM_DATA, swab32(be32_to_cpu(data)));

                val = tr32(GRC_EEPROM_ADDR);
                tw32(GRC_EEPROM_ADDR, val | EEPROM_ADDR_COMPLETE);

                val &= ~(EEPROM_ADDR_ADDR_MASK | EEPROM_ADDR_DEVID_MASK |
                        EEPROM_ADDR_READ);
                tw32(GRC_EEPROM_ADDR, val |
                        (0 << EEPROM_ADDR_DEVID_SHIFT) |
                        (addr & EEPROM_ADDR_ADDR_MASK) |
                        EEPROM_ADDR_START |
                        EEPROM_ADDR_WRITE);

                for (j = 0; j < 1000; j++) {
                        val = tr32(GRC_EEPROM_ADDR);

                        if (val & EEPROM_ADDR_COMPLETE)
                                break;
                        msleep(1);
                }
                if (!(val & EEPROM_ADDR_COMPLETE)) {
                        rc = -EBUSY;
                        break;
                }
        }

        return rc;
}

/* offset and length are dword aligned */
static int tg3_nvram_write_block_unbuffered(struct tg3 *tp, u32 offset, u32 len,
                u8 *buf)
{
        int ret = 0;
        u32 pagesize = tp->nvram_pagesize;
        u32 pagemask = pagesize - 1;
        u32 nvram_cmd;
        u8 *tmp;

        tmp = kmalloc(pagesize, GFP_KERNEL);
        if (tmp == NULL)
                return -ENOMEM;

        while (len) {
                int j;
                u32 phy_addr, page_off, size;

                phy_addr = offset & ~pagemask;

                for (j = 0; j < pagesize; j += 4) {
                        ret = tg3_nvram_read_be32(tp, phy_addr + j,
                                                  (__be32 *) (tmp + j));
                        if (ret)
                                break;
                }
                if (ret)
                        break;

                page_off = offset & pagemask;
                size = pagesize;
                if (len < size)
                        size = len;

                len -= size;

                memcpy(tmp + page_off, buf, size);

                offset = offset + (pagesize - page_off);

                tg3_enable_nvram_access(tp);

                /*
                 * Before we can erase the flash page, we need
                 * to issue a special "write enable" command.
                 */
                nvram_cmd = NVRAM_CMD_WREN | NVRAM_CMD_GO | NVRAM_CMD_DONE;

                if (tg3_nvram_exec_cmd(tp, nvram_cmd))
                        break;

                /* Erase the target page */
                tw32(NVRAM_ADDR, phy_addr);

                nvram_cmd = NVRAM_CMD_GO | NVRAM_CMD_DONE | NVRAM_CMD_WR |
                        NVRAM_CMD_FIRST | NVRAM_CMD_LAST | NVRAM_CMD_ERASE;

                if (tg3_nvram_exec_cmd(tp, nvram_cmd))
                        break;

                /* Issue another write enable to start the write. */
                nvram_cmd = NVRAM_CMD_WREN | NVRAM_CMD_GO | NVRAM_CMD_DONE;

                if (tg3_nvram_exec_cmd(tp, nvram_cmd))
                        break;

                for (j = 0; j < pagesize; j += 4) {
                        __be32 data;

                        data = *((__be32 *) (tmp + j));

                        tw32(NVRAM_WRDATA, be32_to_cpu(data));

                        tw32(NVRAM_ADDR, phy_addr + j);

                        nvram_cmd = NVRAM_CMD_GO | NVRAM_CMD_DONE |
                                NVRAM_CMD_WR;

                        if (j == 0)
                                nvram_cmd |= NVRAM_CMD_FIRST;
                        else if (j == (pagesize - 4))
                                nvram_cmd |= NVRAM_CMD_LAST;

                        if ((ret = tg3_nvram_exec_cmd(tp, nvram_cmd)))
                                break;
                }
                if (ret)
                        break;
        }

        nvram_cmd = NVRAM_CMD_WRDI | NVRAM_CMD_GO | NVRAM_CMD_DONE;
        tg3_nvram_exec_cmd(tp, nvram_cmd);

        kfree(tmp);

        return ret;
}

/* offset and length are dword aligned */
static int tg3_nvram_write_block_buffered(struct tg3 *tp, u32 offset, u32 len,
                u8 *buf)
{
        int i, ret = 0;

        for (i = 0; i < len; i += 4, offset += 4) {
                u32 page_off, phy_addr, nvram_cmd;
                __be32 data;

                memcpy(&data, buf + i, 4);
                tw32(NVRAM_WRDATA, be32_to_cpu(data));

                page_off = offset % tp->nvram_pagesize;

                phy_addr = tg3_nvram_phys_addr(tp, offset);

                tw32(NVRAM_ADDR, phy_addr);

                nvram_cmd = NVRAM_CMD_GO | NVRAM_CMD_DONE | NVRAM_CMD_WR;

                if (page_off == 0 || i == 0)
                        nvram_cmd |= NVRAM_CMD_FIRST;
                if (page_off == (tp->nvram_pagesize - 4))
                        nvram_cmd |= NVRAM_CMD_LAST;

                if (i == (len - 4))
                        nvram_cmd |= NVRAM_CMD_LAST;

                if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5752 &&
                    !tg3_flag(tp, 5755_PLUS) &&
                    (tp->nvram_jedecnum == JEDEC_ST) &&
                    (nvram_cmd & NVRAM_CMD_FIRST)) {

                        if ((ret = tg3_nvram_exec_cmd(tp,
                                NVRAM_CMD_WREN | NVRAM_CMD_GO |
                                NVRAM_CMD_DONE)))

                                break;
                }
                if (!tg3_flag(tp, FLASH)) {
                        /* We always do complete word writes to eeprom. */
                        nvram_cmd |= (NVRAM_CMD_FIRST | NVRAM_CMD_LAST);
                }

                if ((ret = tg3_nvram_exec_cmd(tp, nvram_cmd)))
                        break;
        }
        return ret;
}

/* offset and length are dword aligned */
static int tg3_nvram_write_block(struct tg3 *tp, u32 offset, u32 len, u8 *buf)
{
        int ret;

        if (tg3_flag(tp, EEPROM_WRITE_PROT)) {
                tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl &
                       ~GRC_LCLCTRL_GPIO_OUTPUT1);
                udelay(40);
        }

        if (!tg3_flag(tp, NVRAM)) {
                ret = tg3_nvram_write_block_using_eeprom(tp, offset, len, buf);
        } else {
                u32 grc_mode;

                ret = tg3_nvram_lock(tp);
                if (ret)
                        return ret;

                tg3_enable_nvram_access(tp);
                if (tg3_flag(tp, 5750_PLUS) && !tg3_flag(tp, PROTECTED_NVRAM))
                        tw32(NVRAM_WRITE1, 0x406);

                grc_mode = tr32(GRC_MODE);
                tw32(GRC_MODE, grc_mode | GRC_MODE_NVRAM_WR_ENABLE);

                if (tg3_flag(tp, NVRAM_BUFFERED) || !tg3_flag(tp, FLASH)) {
                        ret = tg3_nvram_write_block_buffered(tp, offset, len,
                                buf);
                } else {
                        ret = tg3_nvram_write_block_unbuffered(tp, offset, len,
                                buf);
                }

                grc_mode = tr32(GRC_MODE);
                tw32(GRC_MODE, grc_mode & ~GRC_MODE_NVRAM_WR_ENABLE);

                tg3_disable_nvram_access(tp);
                tg3_nvram_unlock(tp);
        }

        if (tg3_flag(tp, EEPROM_WRITE_PROT)) {
                tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl);
                udelay(40);
        }

        return ret;
}

struct subsys_tbl_ent {
        u16 subsys_vendor, subsys_devid;
        u32 phy_id;
};

static struct subsys_tbl_ent subsys_id_to_phy_id[] __devinitdata = {
        /* Broadcom boards. */
        { TG3PCI_SUBVENDOR_ID_BROADCOM,
          TG3PCI_SUBDEVICE_ID_BROADCOM_95700A6, TG3_PHY_ID_BCM5401 },
        { TG3PCI_SUBVENDOR_ID_BROADCOM,
          TG3PCI_SUBDEVICE_ID_BROADCOM_95701A5, TG3_PHY_ID_BCM5701 },
        { TG3PCI_SUBVENDOR_ID_BROADCOM,
          TG3PCI_SUBDEVICE_ID_BROADCOM_95700T6, TG3_PHY_ID_BCM8002 },
        { TG3PCI_SUBVENDOR_ID_BROADCOM,
          TG3PCI_SUBDEVICE_ID_BROADCOM_95700A9, 0 },
        { TG3PCI_SUBVENDOR_ID_BROADCOM,
          TG3PCI_SUBDEVICE_ID_BROADCOM_95701T1, TG3_PHY_ID_BCM5701 },
        { TG3PCI_SUBVENDOR_ID_BROADCOM,
          TG3PCI_SUBDEVICE_ID_BROADCOM_95701T8, TG3_PHY_ID_BCM5701 },
        { TG3PCI_SUBVENDOR_ID_BROADCOM,
          TG3PCI_SUBDEVICE_ID_BROADCOM_95701A7, 0 },
        { TG3PCI_SUBVENDOR_ID_BROADCOM,
          TG3PCI_SUBDEVICE_ID_BROADCOM_95701A10, TG3_PHY_ID_BCM5701 },
        { TG3PCI_SUBVENDOR_ID_BROADCOM,
          TG3PCI_SUBDEVICE_ID_BROADCOM_95701A12, TG3_PHY_ID_BCM5701 },
        { TG3PCI_SUBVENDOR_ID_BROADCOM,
          TG3PCI_SUBDEVICE_ID_BROADCOM_95703AX1, TG3_PHY_ID_BCM5703 },
        { TG3PCI_SUBVENDOR_ID_BROADCOM,
          TG3PCI_SUBDEVICE_ID_BROADCOM_95703AX2, TG3_PHY_ID_BCM5703 },

        /* 3com boards. */
        { TG3PCI_SUBVENDOR_ID_3COM,
          TG3PCI_SUBDEVICE_ID_3COM_3C996T, TG3_PHY_ID_BCM5401 },
        { TG3PCI_SUBVENDOR_ID_3COM,
          TG3PCI_SUBDEVICE_ID_3COM_3C996BT, TG3_PHY_ID_BCM5701 },
        { TG3PCI_SUBVENDOR_ID_3COM,
          TG3PCI_SUBDEVICE_ID_3COM_3C996SX, 0 },
        { TG3PCI_SUBVENDOR_ID_3COM,
          TG3PCI_SUBDEVICE_ID_3COM_3C1000T, TG3_PHY_ID_BCM5701 },
        { TG3PCI_SUBVENDOR_ID_3COM,
          TG3PCI_SUBDEVICE_ID_3COM_3C940BR01, TG3_PHY_ID_BCM5701 },

        /* DELL boards. */
        { TG3PCI_SUBVENDOR_ID_DELL,
          TG3PCI_SUBDEVICE_ID_DELL_VIPER, TG3_PHY_ID_BCM5401 },
        { TG3PCI_SUBVENDOR_ID_DELL,
          TG3PCI_SUBDEVICE_ID_DELL_JAGUAR, TG3_PHY_ID_BCM5401 },
        { TG3PCI_SUBVENDOR_ID_DELL,
          TG3PCI_SUBDEVICE_ID_DELL_MERLOT, TG3_PHY_ID_BCM5411 },
        { TG3PCI_SUBVENDOR_ID_DELL,
          TG3PCI_SUBDEVICE_ID_DELL_SLIM_MERLOT, TG3_PHY_ID_BCM5411 },

        /* Compaq boards. */
        { TG3PCI_SUBVENDOR_ID_COMPAQ,
          TG3PCI_SUBDEVICE_ID_COMPAQ_BANSHEE, TG3_PHY_ID_BCM5701 },
        { TG3PCI_SUBVENDOR_ID_COMPAQ,
          TG3PCI_SUBDEVICE_ID_COMPAQ_BANSHEE_2, TG3_PHY_ID_BCM5701 },
        { TG3PCI_SUBVENDOR_ID_COMPAQ,
          TG3PCI_SUBDEVICE_ID_COMPAQ_CHANGELING, 0 },
        { TG3PCI_SUBVENDOR_ID_COMPAQ,
          TG3PCI_SUBDEVICE_ID_COMPAQ_NC7780, TG3_PHY_ID_BCM5701 },
        { TG3PCI_SUBVENDOR_ID_COMPAQ,
          TG3PCI_SUBDEVICE_ID_COMPAQ_NC7780_2, TG3_PHY_ID_BCM5701 },

        /* IBM boards. */
        { TG3PCI_SUBVENDOR_ID_IBM,
          TG3PCI_SUBDEVICE_ID_IBM_5703SAX2, 0 }
};

static struct subsys_tbl_ent * __devinit tg3_lookup_by_subsys(struct tg3 *tp)
{
        int i;

        for (i = 0; i < ARRAY_SIZE(subsys_id_to_phy_id); i++) {
                if ((subsys_id_to_phy_id[i].subsys_vendor ==
                     tp->pdev->subsystem_vendor) &&
                    (subsys_id_to_phy_id[i].subsys_devid ==
                     tp->pdev->subsystem_device))
                        return &subsys_id_to_phy_id[i];
        }
        return NULL;
}

static void __devinit tg3_get_eeprom_hw_cfg(struct tg3 *tp)
{
        u32 val;

        tp->phy_id = TG3_PHY_ID_INVALID;
        tp->led_ctrl = LED_CTRL_MODE_PHY_1;

        /* Assume an onboard device and WOL capable by default.  */
        tg3_flag_set(tp, EEPROM_WRITE_PROT);
        tg3_flag_set(tp, WOL_CAP);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                if (!(tr32(PCIE_TRANSACTION_CFG) & PCIE_TRANS_CFG_LOM)) {
                        tg3_flag_clear(tp, EEPROM_WRITE_PROT);
                        tg3_flag_set(tp, IS_NIC);
                }
                val = tr32(VCPU_CFGSHDW);
                if (val & VCPU_CFGSHDW_ASPM_DBNC)
                        tg3_flag_set(tp, ASPM_WORKAROUND);
                if ((val & VCPU_CFGSHDW_WOL_ENABLE) &&
                    (val & VCPU_CFGSHDW_WOL_MAGPKT)) {
                        tg3_flag_set(tp, WOL_ENABLE);
                        device_set_wakeup_enable(&tp->pdev->dev, true);
                }
                goto done;
        }

        tg3_read_mem(tp, NIC_SRAM_DATA_SIG, &val);
        if (val == NIC_SRAM_DATA_SIG_MAGIC) {
                u32 nic_cfg, led_cfg;
                u32 nic_phy_id, ver, cfg2 = 0, cfg4 = 0, eeprom_phy_id;
                int eeprom_phy_serdes = 0;

                tg3_read_mem(tp, NIC_SRAM_DATA_CFG, &nic_cfg);
                tp->nic_sram_data_cfg = nic_cfg;

                tg3_read_mem(tp, NIC_SRAM_DATA_VER, &ver);
                ver >>= NIC_SRAM_DATA_VER_SHIFT;
                if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700 &&
                    GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5701 &&
                    GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5703 &&
                    (ver > 0) && (ver < 0x100))
                        tg3_read_mem(tp, NIC_SRAM_DATA_CFG_2, &cfg2);

                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785)
                        tg3_read_mem(tp, NIC_SRAM_DATA_CFG_4, &cfg4);

                if ((nic_cfg & NIC_SRAM_DATA_CFG_PHY_TYPE_MASK) ==
                    NIC_SRAM_DATA_CFG_PHY_TYPE_FIBER)
                        eeprom_phy_serdes = 1;

                tg3_read_mem(tp, NIC_SRAM_DATA_PHY_ID, &nic_phy_id);
                if (nic_phy_id != 0) {
                        u32 id1 = nic_phy_id & NIC_SRAM_DATA_PHY_ID1_MASK;
                        u32 id2 = nic_phy_id & NIC_SRAM_DATA_PHY_ID2_MASK;

                        eeprom_phy_id  = (id1 >> 16) << 10;
                        eeprom_phy_id |= (id2 & 0xfc00) << 16;
                        eeprom_phy_id |= (id2 & 0x03ff) <<  0;
                } else
                        eeprom_phy_id = 0;

                tp->phy_id = eeprom_phy_id;
                if (eeprom_phy_serdes) {
                        if (!tg3_flag(tp, 5705_PLUS))
                                tp->phy_flags |= TG3_PHYFLG_PHY_SERDES;
                        else
                                tp->phy_flags |= TG3_PHYFLG_MII_SERDES;
                }

                if (tg3_flag(tp, 5750_PLUS))
                        led_cfg = cfg2 & (NIC_SRAM_DATA_CFG_LED_MODE_MASK |
                                    SHASTA_EXT_LED_MODE_MASK);
                else
                        led_cfg = nic_cfg & NIC_SRAM_DATA_CFG_LED_MODE_MASK;

                switch (led_cfg) {
                default:
                case NIC_SRAM_DATA_CFG_LED_MODE_PHY_1:
                        tp->led_ctrl = LED_CTRL_MODE_PHY_1;
                        break;

                case NIC_SRAM_DATA_CFG_LED_MODE_PHY_2:
                        tp->led_ctrl = LED_CTRL_MODE_PHY_2;
                        break;

                case NIC_SRAM_DATA_CFG_LED_MODE_MAC:
                        tp->led_ctrl = LED_CTRL_MODE_MAC;

                        /* Default to PHY_1_MODE if 0 (MAC_MODE) is
                         * read on some older 5700/5701 bootcode.
                         */
                        if (GET_ASIC_REV(tp->pci_chip_rev_id) ==
                            ASIC_REV_5700 ||
                            GET_ASIC_REV(tp->pci_chip_rev_id) ==
                            ASIC_REV_5701)
                                tp->led_ctrl = LED_CTRL_MODE_PHY_1;

                        break;

                case SHASTA_EXT_LED_SHARED:
                        tp->led_ctrl = LED_CTRL_MODE_SHARED;
                        if (tp->pci_chip_rev_id != CHIPREV_ID_5750_A0 &&
                            tp->pci_chip_rev_id != CHIPREV_ID_5750_A1)
                                tp->led_ctrl |= (LED_CTRL_MODE_PHY_1 |
                                                 LED_CTRL_MODE_PHY_2);
                        break;

                case SHASTA_EXT_LED_MAC:
                        tp->led_ctrl = LED_CTRL_MODE_SHASTA_MAC;
                        break;

                case SHASTA_EXT_LED_COMBO:
                        tp->led_ctrl = LED_CTRL_MODE_COMBO;
                        if (tp->pci_chip_rev_id != CHIPREV_ID_5750_A0)
                                tp->led_ctrl |= (LED_CTRL_MODE_PHY_1 |
                                                 LED_CTRL_MODE_PHY_2);
                        break;

                }

                if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
                     GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701) &&
                    tp->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL)
                        tp->led_ctrl = LED_CTRL_MODE_PHY_2;

                if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5784_AX)
                        tp->led_ctrl = LED_CTRL_MODE_PHY_1;

                if (nic_cfg & NIC_SRAM_DATA_CFG_EEPROM_WP) {
                        tg3_flag_set(tp, EEPROM_WRITE_PROT);
                        if ((tp->pdev->subsystem_vendor ==
                             PCI_VENDOR_ID_ARIMA) &&
                            (tp->pdev->subsystem_device == 0x205a ||
                             tp->pdev->subsystem_device == 0x2063))
                                tg3_flag_clear(tp, EEPROM_WRITE_PROT);
                } else {
                        tg3_flag_clear(tp, EEPROM_WRITE_PROT);
                        tg3_flag_set(tp, IS_NIC);
                }

                if (nic_cfg & NIC_SRAM_DATA_CFG_ASF_ENABLE) {
                        tg3_flag_set(tp, ENABLE_ASF);
                        if (tg3_flag(tp, 5750_PLUS))
                                tg3_flag_set(tp, ASF_NEW_HANDSHAKE);
                }

                if ((nic_cfg & NIC_SRAM_DATA_CFG_APE_ENABLE) &&
                    tg3_flag(tp, 5750_PLUS))
                        tg3_flag_set(tp, ENABLE_APE);

                if (tp->phy_flags & TG3_PHYFLG_ANY_SERDES &&
                    !(nic_cfg & NIC_SRAM_DATA_CFG_FIBER_WOL))
                        tg3_flag_clear(tp, WOL_CAP);

                if (tg3_flag(tp, WOL_CAP) &&
                    (nic_cfg & NIC_SRAM_DATA_CFG_WOL_ENABLE)) {
                        tg3_flag_set(tp, WOL_ENABLE);
                        device_set_wakeup_enable(&tp->pdev->dev, true);
                }

                if (cfg2 & (1 << 17))
                        tp->phy_flags |= TG3_PHYFLG_CAPACITIVE_COUPLING;

                /* serdes signal pre-emphasis in register 0x590 set by */
                /* bootcode if bit 18 is set */
                if (cfg2 & (1 << 18))
                        tp->phy_flags |= TG3_PHYFLG_SERDES_PREEMPHASIS;

                if ((tg3_flag(tp, 57765_PLUS) ||
                     (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 &&
                      GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5784_AX)) &&
                    (cfg2 & NIC_SRAM_DATA_CFG_2_APD_EN))
                        tp->phy_flags |= TG3_PHYFLG_ENABLE_APD;

                if (tg3_flag(tp, PCI_EXPRESS) &&
                    GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5785 &&
                    !tg3_flag(tp, 57765_PLUS)) {
                        u32 cfg3;

                        tg3_read_mem(tp, NIC_SRAM_DATA_CFG_3, &cfg3);
                        if (cfg3 & NIC_SRAM_ASPM_DEBOUNCE)
                                tg3_flag_set(tp, ASPM_WORKAROUND);
                }

                if (cfg4 & NIC_SRAM_RGMII_INBAND_DISABLE)
                        tg3_flag_set(tp, RGMII_INBAND_DISABLE);
                if (cfg4 & NIC_SRAM_RGMII_EXT_IBND_RX_EN)
                        tg3_flag_set(tp, RGMII_EXT_IBND_RX_EN);
                if (cfg4 & NIC_SRAM_RGMII_EXT_IBND_TX_EN)
                        tg3_flag_set(tp, RGMII_EXT_IBND_TX_EN);
        }
done:
        if (tg3_flag(tp, WOL_CAP))
                device_set_wakeup_enable(&tp->pdev->dev,
                                         tg3_flag(tp, WOL_ENABLE));
        else
                device_set_wakeup_capable(&tp->pdev->dev, false);
}

static int __devinit tg3_issue_otp_command(struct tg3 *tp, u32 cmd)
{
        int i;
        u32 val;

        tw32(OTP_CTRL, cmd | OTP_CTRL_OTP_CMD_START);
        tw32(OTP_CTRL, cmd);

        /* Wait for up to 1 ms for command to execute. */
        for (i = 0; i < 100; i++) {
                val = tr32(OTP_STATUS);
                if (val & OTP_STATUS_CMD_DONE)
                        break;
                udelay(10);
        }

        return (val & OTP_STATUS_CMD_DONE) ? 0 : -EBUSY;
}

/* Read the gphy configuration from the OTP region of the chip.  The gphy
 * configuration is a 32-bit value that straddles the alignment boundary.
 * We do two 32-bit reads and then shift and merge the results.
 */
static u32 __devinit tg3_read_otp_phycfg(struct tg3 *tp)
{
        u32 bhalf_otp, thalf_otp;

        tw32(OTP_MODE, OTP_MODE_OTP_THRU_GRC);

        if (tg3_issue_otp_command(tp, OTP_CTRL_OTP_CMD_INIT))
                return 0;

        tw32(OTP_ADDRESS, OTP_ADDRESS_MAGIC1);

        if (tg3_issue_otp_command(tp, OTP_CTRL_OTP_CMD_READ))
                return 0;

        thalf_otp = tr32(OTP_READ_DATA);

        tw32(OTP_ADDRESS, OTP_ADDRESS_MAGIC2);

        if (tg3_issue_otp_command(tp, OTP_CTRL_OTP_CMD_READ))
                return 0;

        bhalf_otp = tr32(OTP_READ_DATA);

        return ((thalf_otp & 0x0000ffff) << 16) | (bhalf_otp >> 16);
}

static void __devinit tg3_phy_init_link_config(struct tg3 *tp)
{
        u32 adv = ADVERTISED_Autoneg |
                  ADVERTISED_Pause;

        if (!(tp->phy_flags & TG3_PHYFLG_10_100_ONLY))
                adv |= ADVERTISED_1000baseT_Half |
                       ADVERTISED_1000baseT_Full;

        if (!(tp->phy_flags & TG3_PHYFLG_ANY_SERDES))
                adv |= ADVERTISED_100baseT_Half |
                       ADVERTISED_100baseT_Full |
                       ADVERTISED_10baseT_Half |
                       ADVERTISED_10baseT_Full |
                       ADVERTISED_TP;
        else
                adv |= ADVERTISED_FIBRE;

        tp->link_config.advertising = adv;
        tp->link_config.speed = SPEED_INVALID;
        tp->link_config.duplex = DUPLEX_INVALID;
        tp->link_config.autoneg = AUTONEG_ENABLE;
        tp->link_config.active_speed = SPEED_INVALID;
        tp->link_config.active_duplex = DUPLEX_INVALID;
        tp->link_config.orig_speed = SPEED_INVALID;
        tp->link_config.orig_duplex = DUPLEX_INVALID;
        tp->link_config.orig_autoneg = AUTONEG_INVALID;
}

static int __devinit tg3_phy_probe(struct tg3 *tp)
{
        u32 hw_phy_id_1, hw_phy_id_2;
        u32 hw_phy_id, hw_phy_id_masked;
        int err;

        /* flow control autonegotiation is default behavior */
        tg3_flag_set(tp, PAUSE_AUTONEG);
        tp->link_config.flowctrl = FLOW_CTRL_TX | FLOW_CTRL_RX;

        if (tg3_flag(tp, USE_PHYLIB))
                return tg3_phy_init(tp);

        /* Reading the PHY ID register can conflict with ASF
         * firmware access to the PHY hardware.
         */
        err = 0;
        if (tg3_flag(tp, ENABLE_ASF) || tg3_flag(tp, ENABLE_APE)) {
                hw_phy_id = hw_phy_id_masked = TG3_PHY_ID_INVALID;
        } else {
                /* Now read the physical PHY_ID from the chip and verify
                 * that it is sane.  If it doesn't look good, we fall back
                 * to either the hard-coded table based PHY_ID and failing
                 * that the value found in the eeprom area.
                 */
                err |= tg3_readphy(tp, MII_PHYSID1, &hw_phy_id_1);
                err |= tg3_readphy(tp, MII_PHYSID2, &hw_phy_id_2);

                hw_phy_id  = (hw_phy_id_1 & 0xffff) << 10;
                hw_phy_id |= (hw_phy_id_2 & 0xfc00) << 16;
                hw_phy_id |= (hw_phy_id_2 & 0x03ff) <<  0;

                hw_phy_id_masked = hw_phy_id & TG3_PHY_ID_MASK;
        }

        if (!err && TG3_KNOWN_PHY_ID(hw_phy_id_masked)) {
                tp->phy_id = hw_phy_id;
                if (hw_phy_id_masked == TG3_PHY_ID_BCM8002)
                        tp->phy_flags |= TG3_PHYFLG_PHY_SERDES;
                else
                        tp->phy_flags &= ~TG3_PHYFLG_PHY_SERDES;
        } else {
                if (tp->phy_id != TG3_PHY_ID_INVALID) {
                        /* Do nothing, phy ID already set up in
                         * tg3_get_eeprom_hw_cfg().
                         */
                } else {
                        struct subsys_tbl_ent *p;

                        /* No eeprom signature?  Try the hardcoded
                         * subsys device table.
                         */
                        p = tg3_lookup_by_subsys(tp);
                        if (!p)
                                return -ENODEV;

                        tp->phy_id = p->phy_id;
                        if (!tp->phy_id ||
                            tp->phy_id == TG3_PHY_ID_BCM8002)
                                tp->phy_flags |= TG3_PHYFLG_PHY_SERDES;
                }
        }

        if (!(tp->phy_flags & TG3_PHYFLG_ANY_SERDES) &&
            (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
             GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720 ||
             (tp->pdev->device == TG3PCI_DEVICE_TIGON3_5718 &&
              tp->pci_chip_rev_id != CHIPREV_ID_5717_A0) ||
             (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765 &&
              tp->pci_chip_rev_id != CHIPREV_ID_57765_A0)))
                tp->phy_flags |= TG3_PHYFLG_EEE_CAP;

        tg3_phy_init_link_config(tp);

        if (!(tp->phy_flags & TG3_PHYFLG_ANY_SERDES) &&
            !tg3_flag(tp, ENABLE_APE) &&
            !tg3_flag(tp, ENABLE_ASF)) {
                u32 bmsr, mask;

                tg3_readphy(tp, MII_BMSR, &bmsr);
                if (!tg3_readphy(tp, MII_BMSR, &bmsr) &&
                    (bmsr & BMSR_LSTATUS))
                        goto skip_phy_reset;

                err = tg3_phy_reset(tp);
                if (err)
                        return err;

                tg3_phy_set_wirespeed(tp);

                mask = (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
                        ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full |
                        ADVERTISED_1000baseT_Half | ADVERTISED_1000baseT_Full);
                if (!tg3_copper_is_advertising_all(tp, mask)) {
                        tg3_phy_autoneg_cfg(tp, tp->link_config.advertising,
                                            tp->link_config.flowctrl);

                        tg3_writephy(tp, MII_BMCR,
                                     BMCR_ANENABLE | BMCR_ANRESTART);
                }
        }

skip_phy_reset:
        if ((tp->phy_id & TG3_PHY_ID_MASK) == TG3_PHY_ID_BCM5401) {
                err = tg3_init_5401phy_dsp(tp);
                if (err)
                        return err;

                err = tg3_init_5401phy_dsp(tp);
        }

        return err;
}

static void __devinit tg3_read_vpd(struct tg3 *tp)
{
        u8 *vpd_data;
        unsigned int block_end, rosize, len;
        u32 vpdlen;
        int j, i = 0;

        vpd_data = (u8 *)tg3_vpd_readblock(tp, &vpdlen);
        if (!vpd_data)
                goto out_no_vpd;

        i = pci_vpd_find_tag(vpd_data, 0, vpdlen, PCI_VPD_LRDT_RO_DATA);
        if (i < 0)
                goto out_not_found;

        rosize = pci_vpd_lrdt_size(&vpd_data[i]);
        block_end = i + PCI_VPD_LRDT_TAG_SIZE + rosize;
        i += PCI_VPD_LRDT_TAG_SIZE;

        if (block_end > vpdlen)
                goto out_not_found;

        j = pci_vpd_find_info_keyword(vpd_data, i, rosize,
                                      PCI_VPD_RO_KEYWORD_MFR_ID);
        if (j > 0) {
                len = pci_vpd_info_field_size(&vpd_data[j]);

                j += PCI_VPD_INFO_FLD_HDR_SIZE;
                if (j + len > block_end || len != 4 ||
                    memcmp(&vpd_data[j], "1028", 4))
                        goto partno;

                j = pci_vpd_find_info_keyword(vpd_data, i, rosize,
                                              PCI_VPD_RO_KEYWORD_VENDOR0);
                if (j < 0)
                        goto partno;

                len = pci_vpd_info_field_size(&vpd_data[j]);

                j += PCI_VPD_INFO_FLD_HDR_SIZE;
                if (j + len > block_end)
                        goto partno;

                memcpy(tp->fw_ver, &vpd_data[j], len);
                strncat(tp->fw_ver, " bc ", vpdlen - len - 1);
        }

partno:
        i = pci_vpd_find_info_keyword(vpd_data, i, rosize,
                                      PCI_VPD_RO_KEYWORD_PARTNO);
        if (i < 0)
                goto out_not_found;

        len = pci_vpd_info_field_size(&vpd_data[i]);

        i += PCI_VPD_INFO_FLD_HDR_SIZE;
        if (len > TG3_BPN_SIZE ||
            (len + i) > vpdlen)
                goto out_not_found;

        memcpy(tp->board_part_number, &vpd_data[i], len);

out_not_found:
        kfree(vpd_data);
        if (tp->board_part_number[0])
                return;

out_no_vpd:
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717) {
                if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_5717)
                        strcpy(tp->board_part_number, "BCM5717");
                else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_5718)
                        strcpy(tp->board_part_number, "BCM5718");
                else
                        goto nomatch;
        } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780) {
                if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57780)
                        strcpy(tp->board_part_number, "BCM57780");
                else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57760)
                        strcpy(tp->board_part_number, "BCM57760");
                else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57790)
                        strcpy(tp->board_part_number, "BCM57790");
                else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57788)
                        strcpy(tp->board_part_number, "BCM57788");
                else
                        goto nomatch;
        } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765) {
                if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57761)
                        strcpy(tp->board_part_number, "BCM57761");
                else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57765)
                        strcpy(tp->board_part_number, "BCM57765");
                else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57781)
                        strcpy(tp->board_part_number, "BCM57781");
                else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57785)
                        strcpy(tp->board_part_number, "BCM57785");
                else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57791)
                        strcpy(tp->board_part_number, "BCM57791");
                else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57795)
                        strcpy(tp->board_part_number, "BCM57795");
                else
                        goto nomatch;
        } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                strcpy(tp->board_part_number, "BCM95906");
        } else {
nomatch:
                strcpy(tp->board_part_number, "none");
        }
}

static int __devinit tg3_fw_img_is_valid(struct tg3 *tp, u32 offset)
{
        u32 val;

        if (tg3_nvram_read(tp, offset, &val) ||
            (val & 0xfc000000) != 0x0c000000 ||
            tg3_nvram_read(tp, offset + 4, &val) ||
            val != 0)
                return 0;

        return 1;
}

static void __devinit tg3_read_bc_ver(struct tg3 *tp)
{
        u32 val, offset, start, ver_offset;
        int i, dst_off;
        bool newver = false;

        if (tg3_nvram_read(tp, 0xc, &offset) ||
            tg3_nvram_read(tp, 0x4, &start))
                return;

        offset = tg3_nvram_logical_addr(tp, offset);

        if (tg3_nvram_read(tp, offset, &val))
                return;

        if ((val & 0xfc000000) == 0x0c000000) {
                if (tg3_nvram_read(tp, offset + 4, &val))
                        return;

                if (val == 0)
                        newver = true;
        }

        dst_off = strlen(tp->fw_ver);

        if (newver) {
                if (TG3_VER_SIZE - dst_off < 16 ||
                    tg3_nvram_read(tp, offset + 8, &ver_offset))
                        return;

                offset = offset + ver_offset - start;
                for (i = 0; i < 16; i += 4) {
                        __be32 v;
                        if (tg3_nvram_read_be32(tp, offset + i, &v))
                                return;

                        memcpy(tp->fw_ver + dst_off + i, &v, sizeof(v));
                }
        } else {
                u32 major, minor;

                if (tg3_nvram_read(tp, TG3_NVM_PTREV_BCVER, &ver_offset))
                        return;

                major = (ver_offset & TG3_NVM_BCVER_MAJMSK) >>
                        TG3_NVM_BCVER_MAJSFT;
                minor = ver_offset & TG3_NVM_BCVER_MINMSK;
                snprintf(&tp->fw_ver[dst_off], TG3_VER_SIZE - dst_off,
                         "v%d.%02d", major, minor);
        }
}

static void __devinit tg3_read_hwsb_ver(struct tg3 *tp)
{
        u32 val, major, minor;

        /* Use native endian representation */
        if (tg3_nvram_read(tp, TG3_NVM_HWSB_CFG1, &val))
                return;

        major = (val & TG3_NVM_HWSB_CFG1_MAJMSK) >>
                TG3_NVM_HWSB_CFG1_MAJSFT;
        minor = (val & TG3_NVM_HWSB_CFG1_MINMSK) >>
                TG3_NVM_HWSB_CFG1_MINSFT;

        snprintf(&tp->fw_ver[0], 32, "sb v%d.%02d", major, minor);
}

static void __devinit tg3_read_sb_ver(struct tg3 *tp, u32 val)
{
        u32 offset, major, minor, build;

        strncat(tp->fw_ver, "sb", TG3_VER_SIZE - strlen(tp->fw_ver) - 1);

        if ((val & TG3_EEPROM_SB_FORMAT_MASK) != TG3_EEPROM_SB_FORMAT_1)
                return;

        switch (val & TG3_EEPROM_SB_REVISION_MASK) {
        case TG3_EEPROM_SB_REVISION_0:
                offset = TG3_EEPROM_SB_F1R0_EDH_OFF;
                break;
        case TG3_EEPROM_SB_REVISION_2:
                offset = TG3_EEPROM_SB_F1R2_EDH_OFF;
                break;
        case TG3_EEPROM_SB_REVISION_3:
                offset = TG3_EEPROM_SB_F1R3_EDH_OFF;
                break;
        case TG3_EEPROM_SB_REVISION_4:
                offset = TG3_EEPROM_SB_F1R4_EDH_OFF;
                break;
        case TG3_EEPROM_SB_REVISION_5:
                offset = TG3_EEPROM_SB_F1R5_EDH_OFF;
                break;
        case TG3_EEPROM_SB_REVISION_6:
                offset = TG3_EEPROM_SB_F1R6_EDH_OFF;
                break;
        default:
                return;
        }

        if (tg3_nvram_read(tp, offset, &val))
                return;

        build = (val & TG3_EEPROM_SB_EDH_BLD_MASK) >>
                TG3_EEPROM_SB_EDH_BLD_SHFT;
        major = (val & TG3_EEPROM_SB_EDH_MAJ_MASK) >>
                TG3_EEPROM_SB_EDH_MAJ_SHFT;
        minor =  val & TG3_EEPROM_SB_EDH_MIN_MASK;

        if (minor > 99 || build > 26)
                return;

        offset = strlen(tp->fw_ver);
        snprintf(&tp->fw_ver[offset], TG3_VER_SIZE - offset,
                 " v%d.%02d", major, minor);

        if (build > 0) {
                offset = strlen(tp->fw_ver);
                if (offset < TG3_VER_SIZE - 1)
                        tp->fw_ver[offset] = 'a' + build - 1;
        }
}

static void __devinit tg3_read_mgmtfw_ver(struct tg3 *tp)
{
        u32 val, offset, start;
        int i, vlen;

        for (offset = TG3_NVM_DIR_START;
             offset < TG3_NVM_DIR_END;
             offset += TG3_NVM_DIRENT_SIZE) {
                if (tg3_nvram_read(tp, offset, &val))
                        return;

                if ((val >> TG3_NVM_DIRTYPE_SHIFT) == TG3_NVM_DIRTYPE_ASFINI)
                        break;
        }

        if (offset == TG3_NVM_DIR_END)
                return;

        if (!tg3_flag(tp, 5705_PLUS))
                start = 0x08000000;
        else if (tg3_nvram_read(tp, offset - 4, &start))
                return;

        if (tg3_nvram_read(tp, offset + 4, &offset) ||
            !tg3_fw_img_is_valid(tp, offset) ||
            tg3_nvram_read(tp, offset + 8, &val))
                return;

        offset += val - start;

        vlen = strlen(tp->fw_ver);

        tp->fw_ver[vlen++] = ',';
        tp->fw_ver[vlen++] = ' ';

        for (i = 0; i < 4; i++) {
                __be32 v;
                if (tg3_nvram_read_be32(tp, offset, &v))
                        return;

                offset += sizeof(v);

                if (vlen > TG3_VER_SIZE - sizeof(v)) {
                        memcpy(&tp->fw_ver[vlen], &v, TG3_VER_SIZE - vlen);
                        break;
                }

                memcpy(&tp->fw_ver[vlen], &v, sizeof(v));
                vlen += sizeof(v);
        }
}

static void __devinit tg3_read_dash_ver(struct tg3 *tp)
{
        int vlen;
        u32 apedata;
        char *fwtype;

        if (!tg3_flag(tp, ENABLE_APE) || !tg3_flag(tp, ENABLE_ASF))
                return;

        apedata = tg3_ape_read32(tp, TG3_APE_SEG_SIG);
        if (apedata != APE_SEG_SIG_MAGIC)
                return;

        apedata = tg3_ape_read32(tp, TG3_APE_FW_STATUS);
        if (!(apedata & APE_FW_STATUS_READY))
                return;

        apedata = tg3_ape_read32(tp, TG3_APE_FW_VERSION);

        if (tg3_ape_read32(tp, TG3_APE_FW_FEATURES) & TG3_APE_FW_FEATURE_NCSI) {
                tg3_flag_set(tp, APE_HAS_NCSI);
                fwtype = "NCSI";
        } else {
                fwtype = "DASH";
        }

        vlen = strlen(tp->fw_ver);

        snprintf(&tp->fw_ver[vlen], TG3_VER_SIZE - vlen, " %s v%d.%d.%d.%d",
                 fwtype,
                 (apedata & APE_FW_VERSION_MAJMSK) >> APE_FW_VERSION_MAJSFT,
                 (apedata & APE_FW_VERSION_MINMSK) >> APE_FW_VERSION_MINSFT,
                 (apedata & APE_FW_VERSION_REVMSK) >> APE_FW_VERSION_REVSFT,
                 (apedata & APE_FW_VERSION_BLDMSK));
}

static void __devinit tg3_read_fw_ver(struct tg3 *tp)
{
        u32 val;
        bool vpd_vers = false;

        if (tp->fw_ver[0] != 0)
                vpd_vers = true;

        if (tg3_flag(tp, NO_NVRAM)) {
                strcat(tp->fw_ver, "sb");
                return;
        }

        if (tg3_nvram_read(tp, 0, &val))
                return;

        if (val == TG3_EEPROM_MAGIC)
                tg3_read_bc_ver(tp);
        else if ((val & TG3_EEPROM_MAGIC_FW_MSK) == TG3_EEPROM_MAGIC_FW)
                tg3_read_sb_ver(tp, val);
        else if ((val & TG3_EEPROM_MAGIC_HW_MSK) == TG3_EEPROM_MAGIC_HW)
                tg3_read_hwsb_ver(tp);
        else
                return;

        if (vpd_vers)
                goto done;

        if (tg3_flag(tp, ENABLE_APE)) {
                if (tg3_flag(tp, ENABLE_ASF))
                        tg3_read_dash_ver(tp);
        } else if (tg3_flag(tp, ENABLE_ASF)) {
                tg3_read_mgmtfw_ver(tp);
        }

done:
        tp->fw_ver[TG3_VER_SIZE - 1] = 0;
}

static struct pci_dev * __devinit tg3_find_peer(struct tg3 *);

static inline u32 tg3_rx_ret_ring_size(struct tg3 *tp)
{
        if (tg3_flag(tp, LRG_PROD_RING_CAP))
                return TG3_RX_RET_MAX_SIZE_5717;
        else if (tg3_flag(tp, JUMBO_CAPABLE) && !tg3_flag(tp, 5780_CLASS))
                return TG3_RX_RET_MAX_SIZE_5700;
        else
                return TG3_RX_RET_MAX_SIZE_5705;
}

static DEFINE_PCI_DEVICE_TABLE(tg3_write_reorder_chipsets) = {
        { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C) },
        { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE) },
        { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8385_0) },
        { },
};

static int __devinit tg3_get_invariants(struct tg3 *tp)
{
        u32 misc_ctrl_reg;
        u32 pci_state_reg, grc_misc_cfg;
        u32 val;
        u16 pci_cmd;
        int err;

        /* Force memory write invalidate off.  If we leave it on,
         * then on 5700_BX chips we have to enable a workaround.
         * The workaround is to set the TG3PCI_DMA_RW_CTRL boundary
         * to match the cacheline size.  The Broadcom driver have this
         * workaround but turns MWI off all the times so never uses
         * it.  This seems to suggest that the workaround is insufficient.
         */
        pci_read_config_word(tp->pdev, PCI_COMMAND, &pci_cmd);
        pci_cmd &= ~PCI_COMMAND_INVALIDATE;
        pci_write_config_word(tp->pdev, PCI_COMMAND, pci_cmd);

        /* Important! -- Make sure register accesses are byteswapped
         * correctly.  Also, for those chips that require it, make
         * sure that indirect register accesses are enabled before
         * the first operation.
         */
        pci_read_config_dword(tp->pdev, TG3PCI_MISC_HOST_CTRL,
                              &misc_ctrl_reg);
        tp->misc_host_ctrl |= (misc_ctrl_reg &
                               MISC_HOST_CTRL_CHIPREV);
        pci_write_config_dword(tp->pdev, TG3PCI_MISC_HOST_CTRL,
                               tp->misc_host_ctrl);

        tp->pci_chip_rev_id = (misc_ctrl_reg >>
                               MISC_HOST_CTRL_CHIPREV_SHIFT);
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_USE_PROD_ID_REG) {
                u32 prod_id_asic_rev;

                if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_5717 ||
                    tp->pdev->device == TG3PCI_DEVICE_TIGON3_5718 ||
                    tp->pdev->device == TG3PCI_DEVICE_TIGON3_5719 ||
                    tp->pdev->device == TG3PCI_DEVICE_TIGON3_5720)
                        pci_read_config_dword(tp->pdev,
                                              TG3PCI_GEN2_PRODID_ASICREV,
                                              &prod_id_asic_rev);
                else if (tp->pdev->device == TG3PCI_DEVICE_TIGON3_57781 ||
                         tp->pdev->device == TG3PCI_DEVICE_TIGON3_57785 ||
                         tp->pdev->device == TG3PCI_DEVICE_TIGON3_57761 ||
                         tp->pdev->device == TG3PCI_DEVICE_TIGON3_57765 ||
                         tp->pdev->device == TG3PCI_DEVICE_TIGON3_57791 ||
                         tp->pdev->device == TG3PCI_DEVICE_TIGON3_57795)
                        pci_read_config_dword(tp->pdev,
                                              TG3PCI_GEN15_PRODID_ASICREV,
                                              &prod_id_asic_rev);
                else
                        pci_read_config_dword(tp->pdev, TG3PCI_PRODID_ASICREV,
                                              &prod_id_asic_rev);

                tp->pci_chip_rev_id = prod_id_asic_rev;
        }

        /* Wrong chip ID in 5752 A0. This code can be removed later
         * as A0 is not in production.
         */
        if (tp->pci_chip_rev_id == CHIPREV_ID_5752_A0_HW)
                tp->pci_chip_rev_id = CHIPREV_ID_5752_A0;

        /* If we have 5702/03 A1 or A2 on certain ICH chipsets,
         * we need to disable memory and use config. cycles
         * only to access all registers. The 5702/03 chips
         * can mistakenly decode the special cycles from the
         * ICH chipsets as memory write cycles, causing corruption
         * of register and memory space. Only certain ICH bridges
         * will drive special cycles with non-zero data during the
         * address phase which can fall within the 5703's address
         * range. This is not an ICH bug as the PCI spec allows
         * non-zero address during special cycles. However, only
         * these ICH bridges are known to drive non-zero addresses
         * during special cycles.
         *
         * Since special cycles do not cross PCI bridges, we only
         * enable this workaround if the 5703 is on the secondary
         * bus of these ICH bridges.
         */
        if ((tp->pci_chip_rev_id == CHIPREV_ID_5703_A1) ||
            (tp->pci_chip_rev_id == CHIPREV_ID_5703_A2)) {
                static struct tg3_dev_id {
                        u32     vendor;
                        u32     device;
                        u32     rev;
                } ich_chipsets[] = {
                        { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_8,
                          PCI_ANY_ID },
                        { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_8,
                          PCI_ANY_ID },
                        { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_11,
                          0xa },
                        { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_6,
                          PCI_ANY_ID },
                        { },
                };
                struct tg3_dev_id *pci_id = &ich_chipsets[0];
                struct pci_dev *bridge = NULL;

                while (pci_id->vendor != 0) {
                        bridge = pci_get_device(pci_id->vendor, pci_id->device,
                                                bridge);
                        if (!bridge) {
                                pci_id++;
                                continue;
                        }
                        if (pci_id->rev != PCI_ANY_ID) {
                                if (bridge->revision > pci_id->rev)
                                        continue;
                        }
                        if (bridge->subordinate &&
                            (bridge->subordinate->number ==
                             tp->pdev->bus->number)) {
                                tg3_flag_set(tp, ICH_WORKAROUND);
                                pci_dev_put(bridge);
                                break;
                        }
                }
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701) {
                static struct tg3_dev_id {
                        u32     vendor;
                        u32     device;
                } bridge_chipsets[] = {
                        { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0 },
                        { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1 },
                        { },
                };
                struct tg3_dev_id *pci_id = &bridge_chipsets[0];
                struct pci_dev *bridge = NULL;

                while (pci_id->vendor != 0) {
                        bridge = pci_get_device(pci_id->vendor,
                                                pci_id->device,
                                                bridge);
                        if (!bridge) {
                                pci_id++;
                                continue;
                        }
                        if (bridge->subordinate &&
                            (bridge->subordinate->number <=
                             tp->pdev->bus->number) &&
                            (bridge->subordinate->subordinate >=
                             tp->pdev->bus->number)) {
                                tg3_flag_set(tp, 5701_DMA_BUG);
                                pci_dev_put(bridge);
                                break;
                        }
                }
        }

        /* The EPB bridge inside 5714, 5715, and 5780 cannot support
         * DMA addresses > 40-bit. This bridge may have other additional
         * 57xx devices behind it in some 4-port NIC designs for example.
         * Any tg3 device found behind the bridge will also need the 40-bit
         * DMA workaround.
         */
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714) {
                tg3_flag_set(tp, 5780_CLASS);
                tg3_flag_set(tp, 40BIT_DMA_BUG);
                tp->msi_cap = pci_find_capability(tp->pdev, PCI_CAP_ID_MSI);
        } else {
                struct pci_dev *bridge = NULL;

                do {
                        bridge = pci_get_device(PCI_VENDOR_ID_SERVERWORKS,
                                                PCI_DEVICE_ID_SERVERWORKS_EPB,
                                                bridge);
                        if (bridge && bridge->subordinate &&
                            (bridge->subordinate->number <=
                             tp->pdev->bus->number) &&
                            (bridge->subordinate->subordinate >=
                             tp->pdev->bus->number)) {
                                tg3_flag_set(tp, 40BIT_DMA_BUG);
                                pci_dev_put(bridge);
                                break;
                        }
                } while (bridge);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714)
                tp->pdev_peer = tg3_find_peer(tp);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720)
                tg3_flag_set(tp, 5717_PLUS);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765 ||
            tg3_flag(tp, 5717_PLUS))
                tg3_flag_set(tp, 57765_PLUS);

        /* Intentionally exclude ASIC_REV_5906 */
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5755 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5787 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780 ||
            tg3_flag(tp, 57765_PLUS))
                tg3_flag_set(tp, 5755_PLUS);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906 ||
            tg3_flag(tp, 5755_PLUS) ||
            tg3_flag(tp, 5780_CLASS))
                tg3_flag_set(tp, 5750_PLUS);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705 ||
            tg3_flag(tp, 5750_PLUS))
                tg3_flag_set(tp, 5705_PLUS);

        /* Determine TSO capabilities */
        if (tp->pci_chip_rev_id == CHIPREV_ID_5719_A0)
                ; /* Do nothing. HW bug. */
        else if (tg3_flag(tp, 57765_PLUS))
                tg3_flag_set(tp, HW_TSO_3);
        else if (tg3_flag(tp, 5755_PLUS) ||
                 GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906)
                tg3_flag_set(tp, HW_TSO_2);
        else if (tg3_flag(tp, 5750_PLUS)) {
                tg3_flag_set(tp, HW_TSO_1);
                tg3_flag_set(tp, TSO_BUG);
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750 &&
                    tp->pci_chip_rev_id >= CHIPREV_ID_5750_C2)
                        tg3_flag_clear(tp, TSO_BUG);
        } else if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700 &&
                   GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5701 &&
                   tp->pci_chip_rev_id != CHIPREV_ID_5705_A0) {
                        tg3_flag_set(tp, TSO_BUG);
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705)
                        tp->fw_needed = FIRMWARE_TG3TSO5;
                else
                        tp->fw_needed = FIRMWARE_TG3TSO;
        }

        /* Selectively allow TSO based on operating conditions */
        if (tg3_flag(tp, HW_TSO_1) ||
            tg3_flag(tp, HW_TSO_2) ||
            tg3_flag(tp, HW_TSO_3) ||
            (tp->fw_needed && !tg3_flag(tp, ENABLE_ASF)))
                tg3_flag_set(tp, TSO_CAPABLE);
        else {
                tg3_flag_clear(tp, TSO_CAPABLE);
                tg3_flag_clear(tp, TSO_BUG);
                tp->fw_needed = NULL;
        }

        if (tp->pci_chip_rev_id == CHIPREV_ID_5701_A0)
                tp->fw_needed = FIRMWARE_TG3;

        tp->irq_max = 1;

        if (tg3_flag(tp, 5750_PLUS)) {
                tg3_flag_set(tp, SUPPORT_MSI);
                if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_AX ||
                    GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_BX ||
                    (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714 &&
                     tp->pci_chip_rev_id <= CHIPREV_ID_5714_A2 &&
                     tp->pdev_peer == tp->pdev))
                        tg3_flag_clear(tp, SUPPORT_MSI);

                if (tg3_flag(tp, 5755_PLUS) ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                        tg3_flag_set(tp, 1SHOT_MSI);
                }

                if (tg3_flag(tp, 57765_PLUS)) {
                        tg3_flag_set(tp, SUPPORT_MSIX);
                        tp->irq_max = TG3_IRQ_MAX_VECS;
                }
        }

        if (tg3_flag(tp, 5755_PLUS))
                tg3_flag_set(tp, SHORT_DMA_BUG);

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
                tg3_flag_set(tp, 4K_FIFO_LIMIT);

        if (tg3_flag(tp, 5717_PLUS))
                tg3_flag_set(tp, LRG_PROD_RING_CAP);

        if (tg3_flag(tp, 57765_PLUS) &&
            tp->pci_chip_rev_id != CHIPREV_ID_5719_A0)
                tg3_flag_set(tp, USE_JUMBO_BDFLAG);

        if (!tg3_flag(tp, 5705_PLUS) ||
            tg3_flag(tp, 5780_CLASS) ||
            tg3_flag(tp, USE_JUMBO_BDFLAG))
                tg3_flag_set(tp, JUMBO_CAPABLE);

        pci_read_config_dword(tp->pdev, TG3PCI_PCISTATE,
                              &pci_state_reg);

        if (pci_is_pcie(tp->pdev)) {
                u16 lnkctl;

                tg3_flag_set(tp, PCI_EXPRESS);

                tp->pcie_readrq = 4096;
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720)
                        tp->pcie_readrq = 2048;

                pcie_set_readrq(tp->pdev, tp->pcie_readrq);

                pci_read_config_word(tp->pdev,
                                     pci_pcie_cap(tp->pdev) + PCI_EXP_LNKCTL,
                                     &lnkctl);
                if (lnkctl & PCI_EXP_LNKCTL_CLKREQ_EN) {
                        if (GET_ASIC_REV(tp->pci_chip_rev_id) ==
                            ASIC_REV_5906) {
                                tg3_flag_clear(tp, HW_TSO_2);
                                tg3_flag_clear(tp, TSO_CAPABLE);
                        }
                        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 ||
                            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761 ||
                            tp->pci_chip_rev_id == CHIPREV_ID_57780_A0 ||
                            tp->pci_chip_rev_id == CHIPREV_ID_57780_A1)
                                tg3_flag_set(tp, CLKREQ_BUG);
                } else if (tp->pci_chip_rev_id == CHIPREV_ID_5717_A0) {
                        tg3_flag_set(tp, L1PLLPD_EN);
                }
        } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785) {
                /* BCM5785 devices are effectively PCIe devices, and should
                 * follow PCIe codepaths, but do not have a PCIe capabilities
                 * section.
                 */
                tg3_flag_set(tp, PCI_EXPRESS);
        } else if (!tg3_flag(tp, 5705_PLUS) ||
                   tg3_flag(tp, 5780_CLASS)) {
                tp->pcix_cap = pci_find_capability(tp->pdev, PCI_CAP_ID_PCIX);
                if (!tp->pcix_cap) {
                        dev_err(&tp->pdev->dev,
                                "Cannot find PCI-X capability, aborting\n");
                        return -EIO;
                }

                if (!(pci_state_reg & PCISTATE_CONV_PCI_MODE))
                        tg3_flag_set(tp, PCIX_MODE);
        }

        /* If we have an AMD 762 or VIA K8T800 chipset, write
         * reordering to the mailbox registers done by the host
         * controller can cause major troubles.  We read back from
         * every mailbox register write to force the writes to be
         * posted to the chip in order.
         */
        if (pci_dev_present(tg3_write_reorder_chipsets) &&
            !tg3_flag(tp, PCI_EXPRESS))
                tg3_flag_set(tp, MBOX_WRITE_REORDER);

        pci_read_config_byte(tp->pdev, PCI_CACHE_LINE_SIZE,
                             &tp->pci_cacheline_sz);
        pci_read_config_byte(tp->pdev, PCI_LATENCY_TIMER,
                             &tp->pci_lat_timer);
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 &&
            tp->pci_lat_timer < 64) {
                tp->pci_lat_timer = 64;
                pci_write_config_byte(tp->pdev, PCI_LATENCY_TIMER,
                                      tp->pci_lat_timer);
        }

        /* Important! -- It is critical that the PCI-X hw workaround
         * situation is decided before the first MMIO register access.
         */
        if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5700_BX) {
                /* 5700 BX chips need to have their TX producer index
                 * mailboxes written twice to workaround a bug.
                 */
                tg3_flag_set(tp, TXD_MBOX_HWBUG);

                /* If we are in PCI-X mode, enable register write workaround.
                 *
                 * The workaround is to use indirect register accesses
                 * for all chip writes not to mailbox registers.
                 */
                if (tg3_flag(tp, PCIX_MODE)) {
                        u32 pm_reg;

                        tg3_flag_set(tp, PCIX_TARGET_HWBUG);

                        /* The chip can have it's power management PCI config
                         * space registers clobbered due to this bug.
                         * So explicitly force the chip into D0 here.
                         */
                        pci_read_config_dword(tp->pdev,
                                              tp->pm_cap + PCI_PM_CTRL,
                                              &pm_reg);
                        pm_reg &= ~PCI_PM_CTRL_STATE_MASK;
                        pm_reg |= PCI_PM_CTRL_PME_ENABLE | 0 /* D0 */;
                        pci_write_config_dword(tp->pdev,
                                               tp->pm_cap + PCI_PM_CTRL,
                                               pm_reg);

                        /* Also, force SERR#/PERR# in PCI command. */
                        pci_read_config_word(tp->pdev, PCI_COMMAND, &pci_cmd);
                        pci_cmd |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
                        pci_write_config_word(tp->pdev, PCI_COMMAND, pci_cmd);
                }
        }

        if ((pci_state_reg & PCISTATE_BUS_SPEED_HIGH) != 0)
                tg3_flag_set(tp, PCI_HIGH_SPEED);
        if ((pci_state_reg & PCISTATE_BUS_32BIT) != 0)
                tg3_flag_set(tp, PCI_32BIT);

        /* Chip-specific fixup from Broadcom driver */
        if ((tp->pci_chip_rev_id == CHIPREV_ID_5704_A0) &&
            (!(pci_state_reg & PCISTATE_RETRY_SAME_DMA))) {
                pci_state_reg |= PCISTATE_RETRY_SAME_DMA;
                pci_write_config_dword(tp->pdev, TG3PCI_PCISTATE, pci_state_reg);
        }

        /* Default fast path register access methods */
        tp->read32 = tg3_read32;
        tp->write32 = tg3_write32;
        tp->read32_mbox = tg3_read32;
        tp->write32_mbox = tg3_write32;
        tp->write32_tx_mbox = tg3_write32;
        tp->write32_rx_mbox = tg3_write32;

        /* Various workaround register access methods */
        if (tg3_flag(tp, PCIX_TARGET_HWBUG))
                tp->write32 = tg3_write_indirect_reg32;
        else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701 ||
                 (tg3_flag(tp, PCI_EXPRESS) &&
                  tp->pci_chip_rev_id == CHIPREV_ID_5750_A0)) {
                /*
                 * Back to back register writes can cause problems on these
                 * chips, the workaround is to read back all reg writes
                 * except those to mailbox regs.
                 *
                 * See tg3_write_indirect_reg32().
                 */
                tp->write32 = tg3_write_flush_reg32;
        }

        if (tg3_flag(tp, TXD_MBOX_HWBUG) || tg3_flag(tp, MBOX_WRITE_REORDER)) {
                tp->write32_tx_mbox = tg3_write32_tx_mbox;
                if (tg3_flag(tp, MBOX_WRITE_REORDER))
                        tp->write32_rx_mbox = tg3_write_flush_reg32;
        }

        if (tg3_flag(tp, ICH_WORKAROUND)) {
                tp->read32 = tg3_read_indirect_reg32;
                tp->write32 = tg3_write_indirect_reg32;
                tp->read32_mbox = tg3_read_indirect_mbox;
                tp->write32_mbox = tg3_write_indirect_mbox;
                tp->write32_tx_mbox = tg3_write_indirect_mbox;
                tp->write32_rx_mbox = tg3_write_indirect_mbox;

                iounmap(tp->regs);
                tp->regs = NULL;

                pci_read_config_word(tp->pdev, PCI_COMMAND, &pci_cmd);
                pci_cmd &= ~PCI_COMMAND_MEMORY;
                pci_write_config_word(tp->pdev, PCI_COMMAND, pci_cmd);
        }
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                tp->read32_mbox = tg3_read32_mbox_5906;
                tp->write32_mbox = tg3_write32_mbox_5906;
                tp->write32_tx_mbox = tg3_write32_mbox_5906;
                tp->write32_rx_mbox = tg3_write32_mbox_5906;
        }

        if (tp->write32 == tg3_write_indirect_reg32 ||
            (tg3_flag(tp, PCIX_MODE) &&
             (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
              GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701)))
                tg3_flag_set(tp, SRAM_USE_CONFIG);

        /* The memory arbiter has to be enabled in order for SRAM accesses
         * to succeed.  Normally on powerup the tg3 chip firmware will make
         * sure it is enabled, but other entities such as system netboot
         * code might disable it.
         */
        val = tr32(MEMARB_MODE);
        tw32(MEMARB_MODE, val | MEMARB_MODE_ENABLE);

        tp->pci_fn = PCI_FUNC(tp->pdev->devfn) & 3;
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 ||
            tg3_flag(tp, 5780_CLASS)) {
                if (tg3_flag(tp, PCIX_MODE)) {
                        pci_read_config_dword(tp->pdev,
                                              tp->pcix_cap + PCI_X_STATUS,
                                              &val);
                        tp->pci_fn = val & 0x7;
                }
        } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717) {
                tg3_read_mem(tp, NIC_SRAM_CPMU_STATUS, &val);
                if ((val & NIC_SRAM_CPMUSTAT_SIG_MSK) ==
                    NIC_SRAM_CPMUSTAT_SIG) {
                        tp->pci_fn = val & TG3_CPMU_STATUS_FMSK_5717;
                        tp->pci_fn = tp->pci_fn ? 1 : 0;
                }
        } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
                   GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) {
                tg3_read_mem(tp, NIC_SRAM_CPMU_STATUS, &val);
                if ((val & NIC_SRAM_CPMUSTAT_SIG_MSK) ==
                    NIC_SRAM_CPMUSTAT_SIG) {
                        tp->pci_fn = (val & TG3_CPMU_STATUS_FMSK_5719) >>
                                     TG3_CPMU_STATUS_FSHFT_5719;
                }
        }

        /* Get eeprom hw config before calling tg3_set_power_state().
         * In particular, the TG3_FLAG_IS_NIC flag must be
         * determined before calling tg3_set_power_state() so that
         * we know whether or not to switch out of Vaux power.
         * When the flag is set, it means that GPIO1 is used for eeprom
         * write protect and also implies that it is a LOM where GPIOs
         * are not used to switch power.
         */
        tg3_get_eeprom_hw_cfg(tp);

        if (tg3_flag(tp, ENABLE_APE)) {
                /* Allow reads and writes to the
                 * APE register and memory space.
                 */
                pci_state_reg |= PCISTATE_ALLOW_APE_CTLSPC_WR |
                                 PCISTATE_ALLOW_APE_SHMEM_WR |
                                 PCISTATE_ALLOW_APE_PSPACE_WR;
                pci_write_config_dword(tp->pdev, TG3PCI_PCISTATE,
                                       pci_state_reg);

                tg3_ape_lock_init(tp);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780 ||
            tg3_flag(tp, 57765_PLUS))
                tg3_flag_set(tp, CPMU_PRESENT);

        /* Set up tp->grc_local_ctrl before calling
         * tg3_pwrsrc_switch_to_vmain().  GPIO1 driven high
         * will bring 5700's external PHY out of reset.
         * It is also used as eeprom write protect on LOMs.
         */
        tp->grc_local_ctrl = GRC_LCLCTRL_INT_ON_ATTN | GRC_LCLCTRL_AUTO_SEEPROM;
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
            tg3_flag(tp, EEPROM_WRITE_PROT))
                tp->grc_local_ctrl |= (GRC_LCLCTRL_GPIO_OE1 |
                                       GRC_LCLCTRL_GPIO_OUTPUT1);
        /* Unused GPIO3 must be driven as output on 5752 because there
         * are no pull-up resistors on unused GPIO pins.
         */
        else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752)
                tp->grc_local_ctrl |= GRC_LCLCTRL_GPIO_OE3;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5755 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765)
                tp->grc_local_ctrl |= GRC_LCLCTRL_GPIO_UART_SEL;

        if (tp->pdev->device == PCI_DEVICE_ID_TIGON3_5761 ||
            tp->pdev->device == TG3PCI_DEVICE_TIGON3_5761S) {
                /* Turn off the debug UART. */
                tp->grc_local_ctrl |= GRC_LCLCTRL_GPIO_UART_SEL;
                if (tg3_flag(tp, IS_NIC))
                        /* Keep VMain power. */
                        tp->grc_local_ctrl |= GRC_LCLCTRL_GPIO_OE0 |
                                              GRC_LCLCTRL_GPIO_OUTPUT0;
        }

        /* Switch out of Vaux if it is a NIC */
        tg3_pwrsrc_switch_to_vmain(tp);

        /* Derive initial jumbo mode from MTU assigned in
         * ether_setup() via the alloc_etherdev() call
         */
        if (tp->dev->mtu > ETH_DATA_LEN && !tg3_flag(tp, 5780_CLASS))
                tg3_flag_set(tp, JUMBO_RING_ENABLE);

        /* Determine WakeOnLan speed to use. */
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
            tp->pci_chip_rev_id == CHIPREV_ID_5701_A0 ||
            tp->pci_chip_rev_id == CHIPREV_ID_5701_B0 ||
            tp->pci_chip_rev_id == CHIPREV_ID_5701_B2) {
                tg3_flag_clear(tp, WOL_SPEED_100MB);
        } else {
                tg3_flag_set(tp, WOL_SPEED_100MB);
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906)
                tp->phy_flags |= TG3_PHYFLG_IS_FET;

        /* A few boards don't want Ethernet@WireSpeed phy feature */
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
            (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705 &&
             (tp->pci_chip_rev_id != CHIPREV_ID_5705_A0) &&
             (tp->pci_chip_rev_id != CHIPREV_ID_5705_A1)) ||
            (tp->phy_flags & TG3_PHYFLG_IS_FET) ||
            (tp->phy_flags & TG3_PHYFLG_ANY_SERDES))
                tp->phy_flags |= TG3_PHYFLG_NO_ETH_WIRE_SPEED;

        if (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5703_AX ||
            GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5704_AX)
                tp->phy_flags |= TG3_PHYFLG_ADC_BUG;
        if (tp->pci_chip_rev_id == CHIPREV_ID_5704_A0)
                tp->phy_flags |= TG3_PHYFLG_5704_A0_BUG;

        if (tg3_flag(tp, 5705_PLUS) &&
            !(tp->phy_flags & TG3_PHYFLG_IS_FET) &&
            GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5785 &&
            GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_57780 &&
            !tg3_flag(tp, 57765_PLUS)) {
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5755 ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5787 ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761) {
                        if (tp->pdev->device != PCI_DEVICE_ID_TIGON3_5756 &&
                            tp->pdev->device != PCI_DEVICE_ID_TIGON3_5722)
                                tp->phy_flags |= TG3_PHYFLG_JITTER_BUG;
                        if (tp->pdev->device == PCI_DEVICE_ID_TIGON3_5755M)
                                tp->phy_flags |= TG3_PHYFLG_ADJUST_TRIM;
                } else
                        tp->phy_flags |= TG3_PHYFLG_BER_BUG;
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 &&
            GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5784_AX) {
                tp->phy_otp = tg3_read_otp_phycfg(tp);
                if (tp->phy_otp == 0)
                        tp->phy_otp = TG3_OTP_DEFAULT;
        }

        if (tg3_flag(tp, CPMU_PRESENT))
                tp->mi_mode = MAC_MI_MODE_500KHZ_CONST;
        else
                tp->mi_mode = MAC_MI_MODE_BASE;

        tp->coalesce_mode = 0;
        if (GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5700_AX &&
            GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5700_BX)
                tp->coalesce_mode |= HOSTCC_MODE_32BYTE;

        /* Set these bits to enable statistics workaround. */
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
            tp->pci_chip_rev_id == CHIPREV_ID_5719_A0 ||
            tp->pci_chip_rev_id == CHIPREV_ID_5720_A0) {
                tp->coalesce_mode |= HOSTCC_MODE_ATTN;
                tp->grc_mode |= GRC_MODE_IRQ_ON_FLOW_ATTN;
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780)
                tg3_flag_set(tp, USE_PHYLIB);

        err = tg3_mdio_init(tp);
        if (err)
                return err;

        /* Initialize data/descriptor byte/word swapping. */
        val = tr32(GRC_MODE);
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720)
                val &= (GRC_MODE_BYTE_SWAP_B2HRX_DATA |
                        GRC_MODE_WORD_SWAP_B2HRX_DATA |
                        GRC_MODE_B2HRX_ENABLE |
                        GRC_MODE_HTX2B_ENABLE |
                        GRC_MODE_HOST_STACKUP);
        else
                val &= GRC_MODE_HOST_STACKUP;

        tw32(GRC_MODE, val | tp->grc_mode);

        tg3_switch_clocks(tp);

        /* Clear this out for sanity. */
        tw32(TG3PCI_MEM_WIN_BASE_ADDR, 0);

        pci_read_config_dword(tp->pdev, TG3PCI_PCISTATE,
                              &pci_state_reg);
        if ((pci_state_reg & PCISTATE_CONV_PCI_MODE) == 0 &&
            !tg3_flag(tp, PCIX_TARGET_HWBUG)) {
                u32 chiprevid = GET_CHIP_REV_ID(tp->misc_host_ctrl);

                if (chiprevid == CHIPREV_ID_5701_A0 ||
                    chiprevid == CHIPREV_ID_5701_B0 ||
                    chiprevid == CHIPREV_ID_5701_B2 ||
                    chiprevid == CHIPREV_ID_5701_B5) {
                        void __iomem *sram_base;

                        /* Write some dummy words into the SRAM status block
                         * area, see if it reads back correctly.  If the return
                         * value is bad, force enable the PCIX workaround.
                         */
                        sram_base = tp->regs + NIC_SRAM_WIN_BASE + NIC_SRAM_STATS_BLK;

                        writel(0x00000000, sram_base);
                        writel(0x00000000, sram_base + 4);
                        writel(0xffffffff, sram_base + 4);
                        if (readl(sram_base) != 0x00000000)
                                tg3_flag_set(tp, PCIX_TARGET_HWBUG);
                }
        }

        udelay(50);
        tg3_nvram_init(tp);

        grc_misc_cfg = tr32(GRC_MISC_CFG);
        grc_misc_cfg &= GRC_MISC_CFG_BOARD_ID_MASK;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705 &&
            (grc_misc_cfg == GRC_MISC_CFG_BOARD_ID_5788 ||
             grc_misc_cfg == GRC_MISC_CFG_BOARD_ID_5788M))
                tg3_flag_set(tp, IS_5788);

        if (!tg3_flag(tp, IS_5788) &&
            GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700)
                tg3_flag_set(tp, TAGGED_STATUS);
        if (tg3_flag(tp, TAGGED_STATUS)) {
                tp->coalesce_mode |= (HOSTCC_MODE_CLRTICK_RXBD |
                                      HOSTCC_MODE_CLRTICK_TXBD);

                tp->misc_host_ctrl |= MISC_HOST_CTRL_TAGGED_STATUS;
                pci_write_config_dword(tp->pdev, TG3PCI_MISC_HOST_CTRL,
                                       tp->misc_host_ctrl);
        }

        /* Preserve the APE MAC_MODE bits */
        if (tg3_flag(tp, ENABLE_APE))
                tp->mac_mode = MAC_MODE_APE_TX_EN | MAC_MODE_APE_RX_EN;
        else
                tp->mac_mode = 0;

        /* these are limited to 10/100 only */
        if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 &&
             (grc_misc_cfg == 0x8000 || grc_misc_cfg == 0x4000)) ||
            (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705 &&
             tp->pdev->vendor == PCI_VENDOR_ID_BROADCOM &&
             (tp->pdev->device == PCI_DEVICE_ID_TIGON3_5901 ||
              tp->pdev->device == PCI_DEVICE_ID_TIGON3_5901_2 ||
              tp->pdev->device == PCI_DEVICE_ID_TIGON3_5705F)) ||
            (tp->pdev->vendor == PCI_VENDOR_ID_BROADCOM &&
             (tp->pdev->device == PCI_DEVICE_ID_TIGON3_5751F ||
              tp->pdev->device == PCI_DEVICE_ID_TIGON3_5753F ||
              tp->pdev->device == PCI_DEVICE_ID_TIGON3_5787F)) ||
            tp->pdev->device == TG3PCI_DEVICE_TIGON3_57790 ||
            tp->pdev->device == TG3PCI_DEVICE_TIGON3_57791 ||
            tp->pdev->device == TG3PCI_DEVICE_TIGON3_57795 ||
            (tp->phy_flags & TG3_PHYFLG_IS_FET))
                tp->phy_flags |= TG3_PHYFLG_10_100_ONLY;

        err = tg3_phy_probe(tp);
        if (err) {
                dev_err(&tp->pdev->dev, "phy probe failed, err %d\n", err);
                /* ... but do not return immediately ... */
                tg3_mdio_fini(tp);
        }

        tg3_read_vpd(tp);
        tg3_read_fw_ver(tp);

        if (tp->phy_flags & TG3_PHYFLG_PHY_SERDES) {
                tp->phy_flags &= ~TG3_PHYFLG_USE_MI_INTERRUPT;
        } else {
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700)
                        tp->phy_flags |= TG3_PHYFLG_USE_MI_INTERRUPT;
                else
                        tp->phy_flags &= ~TG3_PHYFLG_USE_MI_INTERRUPT;
        }

        /* 5700 {AX,BX} chips have a broken status block link
         * change bit implementation, so we must use the
         * status register in those cases.
         */
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700)
                tg3_flag_set(tp, USE_LINKCHG_REG);
        else
                tg3_flag_clear(tp, USE_LINKCHG_REG);

        /* The led_ctrl is set during tg3_phy_probe, here we might
         * have to force the link status polling mechanism based
         * upon subsystem IDs.
         */
        if (tp->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL &&
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701 &&
            !(tp->phy_flags & TG3_PHYFLG_PHY_SERDES)) {
                tp->phy_flags |= TG3_PHYFLG_USE_MI_INTERRUPT;
                tg3_flag_set(tp, USE_LINKCHG_REG);
        }

        /* For all SERDES we poll the MAC status register. */
        if (tp->phy_flags & TG3_PHYFLG_PHY_SERDES)
                tg3_flag_set(tp, POLL_SERDES);
        else
                tg3_flag_clear(tp, POLL_SERDES);

        tp->rx_offset = NET_IP_ALIGN;
        tp->rx_copy_thresh = TG3_RX_COPY_THRESHOLD;
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701 &&
            tg3_flag(tp, PCIX_MODE)) {
                tp->rx_offset = 0;
#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
                tp->rx_copy_thresh = ~(u16)0;
#endif
        }

        tp->rx_std_ring_mask = TG3_RX_STD_RING_SIZE(tp) - 1;
        tp->rx_jmb_ring_mask = TG3_RX_JMB_RING_SIZE(tp) - 1;
        tp->rx_ret_ring_mask = tg3_rx_ret_ring_size(tp) - 1;

        tp->rx_std_max_post = tp->rx_std_ring_mask + 1;

        /* Increment the rx prod index on the rx std ring by at most
         * 8 for these chips to workaround hw errata.
         */
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5755)
                tp->rx_std_max_post = 8;

        if (tg3_flag(tp, ASPM_WORKAROUND))
                tp->pwrmgmt_thresh = tr32(PCIE_PWR_MGMT_THRESH) &
                                     PCIE_PWR_MGMT_L1_THRESH_MSK;

        return err;
}

#ifdef CONFIG_SPARC
static int __devinit tg3_get_macaddr_sparc(struct tg3 *tp)
{
        struct net_device *dev = tp->dev;
        struct pci_dev *pdev = tp->pdev;
        struct device_node *dp = pci_device_to_OF_node(pdev);
        const unsigned char *addr;
        int len;

        addr = of_get_property(dp, "local-mac-address", &len);
        if (addr && len == 6) {
                memcpy(dev->dev_addr, addr, 6);
                memcpy(dev->perm_addr, dev->dev_addr, 6);
                return 0;
        }
        return -ENODEV;
}

static int __devinit tg3_get_default_macaddr_sparc(struct tg3 *tp)
{
        struct net_device *dev = tp->dev;

        memcpy(dev->dev_addr, idprom->id_ethaddr, 6);
        memcpy(dev->perm_addr, idprom->id_ethaddr, 6);
        return 0;
}
#endif

static int __devinit tg3_get_device_address(struct tg3 *tp)
{
        struct net_device *dev = tp->dev;
        u32 hi, lo, mac_offset;
        int addr_ok = 0;

#ifdef CONFIG_SPARC
        if (!tg3_get_macaddr_sparc(tp))
                return 0;
#endif

        mac_offset = 0x7c;
        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 ||
            tg3_flag(tp, 5780_CLASS)) {
                if (tr32(TG3PCI_DUAL_MAC_CTRL) & DUAL_MAC_CTRL_ID)
                        mac_offset = 0xcc;
                if (tg3_nvram_lock(tp))
                        tw32_f(NVRAM_CMD, NVRAM_CMD_RESET);
                else
                        tg3_nvram_unlock(tp);
        } else if (tg3_flag(tp, 5717_PLUS)) {
                if (tp->pci_fn & 1)
                        mac_offset = 0xcc;
                if (tp->pci_fn > 1)
                        mac_offset += 0x18c;
        } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906)
                mac_offset = 0x10;

        /* First try to get it from MAC address mailbox. */
        tg3_read_mem(tp, NIC_SRAM_MAC_ADDR_HIGH_MBOX, &hi);
        if ((hi >> 16) == 0x484b) {
                dev->dev_addr[0] = (hi >>  8) & 0xff;
                dev->dev_addr[1] = (hi >>  0) & 0xff;

                tg3_read_mem(tp, NIC_SRAM_MAC_ADDR_LOW_MBOX, &lo);
                dev->dev_addr[2] = (lo >> 24) & 0xff;
                dev->dev_addr[3] = (lo >> 16) & 0xff;
                dev->dev_addr[4] = (lo >>  8) & 0xff;
                dev->dev_addr[5] = (lo >>  0) & 0xff;

                /* Some old bootcode may report a 0 MAC address in SRAM */
                addr_ok = is_valid_ether_addr(&dev->dev_addr[0]);
        }
        if (!addr_ok) {
                /* Next, try NVRAM. */
                if (!tg3_flag(tp, NO_NVRAM) &&
                    !tg3_nvram_read_be32(tp, mac_offset + 0, &hi) &&
                    !tg3_nvram_read_be32(tp, mac_offset + 4, &lo)) {
                        memcpy(&dev->dev_addr[0], ((char *)&hi) + 2, 2);
                        memcpy(&dev->dev_addr[2], (char *)&lo, sizeof(lo));
                }
                /* Finally just fetch it out of the MAC control regs. */
                else {
                        hi = tr32(MAC_ADDR_0_HIGH);
                        lo = tr32(MAC_ADDR_0_LOW);

                        dev->dev_addr[5] = lo & 0xff;
                        dev->dev_addr[4] = (lo >> 8) & 0xff;
                        dev->dev_addr[3] = (lo >> 16) & 0xff;
                        dev->dev_addr[2] = (lo >> 24) & 0xff;
                        dev->dev_addr[1] = hi & 0xff;
                        dev->dev_addr[0] = (hi >> 8) & 0xff;
                }
        }

        if (!is_valid_ether_addr(&dev->dev_addr[0])) {
#ifdef CONFIG_SPARC
                if (!tg3_get_default_macaddr_sparc(tp))
                        return 0;
#endif
                return -EINVAL;
        }
        memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
        return 0;
}

#define BOUNDARY_SINGLE_CACHELINE       1
#define BOUNDARY_MULTI_CACHELINE        2

static u32 __devinit tg3_calc_dma_bndry(struct tg3 *tp, u32 val)
{
        int cacheline_size;
        u8 byte;
        int goal;

        pci_read_config_byte(tp->pdev, PCI_CACHE_LINE_SIZE, &byte);
        if (byte == 0)
                cacheline_size = 1024;
        else
                cacheline_size = (int) byte * 4;

        /* On 5703 and later chips, the boundary bits have no
         * effect.
         */
        if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700 &&
            GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5701 &&
            !tg3_flag(tp, PCI_EXPRESS))
                goto out;

#if defined(CONFIG_PPC64) || defined(CONFIG_IA64) || defined(CONFIG_PARISC)
        goal = BOUNDARY_MULTI_CACHELINE;
#else
#if defined(CONFIG_SPARC64) || defined(CONFIG_ALPHA)
        goal = BOUNDARY_SINGLE_CACHELINE;
#else
        goal = 0;
#endif
#endif

        if (tg3_flag(tp, 57765_PLUS)) {
                val = goal ? 0 : DMA_RWCTRL_DIS_CACHE_ALIGNMENT;
                goto out;
        }

        if (!goal)
                goto out;

        /* PCI controllers on most RISC systems tend to disconnect
         * when a device tries to burst across a cache-line boundary.
         * Therefore, letting tg3 do so just wastes PCI bandwidth.
         *
         * Unfortunately, for PCI-E there are only limited
         * write-side controls for this, and thus for reads
         * we will still get the disconnects.  We'll also waste
         * these PCI cycles for both read and write for chips
         * other than 5700 and 5701 which do not implement the
         * boundary bits.
         */
        if (tg3_flag(tp, PCIX_MODE) && !tg3_flag(tp, PCI_EXPRESS)) {
                switch (cacheline_size) {
                case 16:
                case 32:
                case 64:
                case 128:
                        if (goal == BOUNDARY_SINGLE_CACHELINE) {
                                val |= (DMA_RWCTRL_READ_BNDRY_128_PCIX |
                                        DMA_RWCTRL_WRITE_BNDRY_128_PCIX);
                        } else {
                                val |= (DMA_RWCTRL_READ_BNDRY_384_PCIX |
                                        DMA_RWCTRL_WRITE_BNDRY_384_PCIX);
                        }
                        break;

                case 256:
                        val |= (DMA_RWCTRL_READ_BNDRY_256_PCIX |
                                DMA_RWCTRL_WRITE_BNDRY_256_PCIX);
                        break;

                default:
                        val |= (DMA_RWCTRL_READ_BNDRY_384_PCIX |
                                DMA_RWCTRL_WRITE_BNDRY_384_PCIX);
                        break;
                }
        } else if (tg3_flag(tp, PCI_EXPRESS)) {
                switch (cacheline_size) {
                case 16:
                case 32:
                case 64:
                        if (goal == BOUNDARY_SINGLE_CACHELINE) {
                                val &= ~DMA_RWCTRL_WRITE_BNDRY_DISAB_PCIE;
                                val |= DMA_RWCTRL_WRITE_BNDRY_64_PCIE;
                                break;
                        }
                        /* fallthrough */
                case 128:
                default:
                        val &= ~DMA_RWCTRL_WRITE_BNDRY_DISAB_PCIE;
                        val |= DMA_RWCTRL_WRITE_BNDRY_128_PCIE;
                        break;
                }
        } else {
                switch (cacheline_size) {
                case 16:
                        if (goal == BOUNDARY_SINGLE_CACHELINE) {
                                val |= (DMA_RWCTRL_READ_BNDRY_16 |
                                        DMA_RWCTRL_WRITE_BNDRY_16);
                                break;
                        }
                        /* fallthrough */
                case 32:
                        if (goal == BOUNDARY_SINGLE_CACHELINE) {
                                val |= (DMA_RWCTRL_READ_BNDRY_32 |
                                        DMA_RWCTRL_WRITE_BNDRY_32);
                                break;
                        }
                        /* fallthrough */
                case 64:
                        if (goal == BOUNDARY_SINGLE_CACHELINE) {
                                val |= (DMA_RWCTRL_READ_BNDRY_64 |
                                        DMA_RWCTRL_WRITE_BNDRY_64);
                                break;
                        }
                        /* fallthrough */
                case 128:
                        if (goal == BOUNDARY_SINGLE_CACHELINE) {
                                val |= (DMA_RWCTRL_READ_BNDRY_128 |
                                        DMA_RWCTRL_WRITE_BNDRY_128);
                                break;
                        }
                        /* fallthrough */
                case 256:
                        val |= (DMA_RWCTRL_READ_BNDRY_256 |
                                DMA_RWCTRL_WRITE_BNDRY_256);
                        break;
                case 512:
                        val |= (DMA_RWCTRL_READ_BNDRY_512 |
                                DMA_RWCTRL_WRITE_BNDRY_512);
                        break;
                case 1024:
                default:
                        val |= (DMA_RWCTRL_READ_BNDRY_1024 |
                                DMA_RWCTRL_WRITE_BNDRY_1024);
                        break;
                }
        }

out:
        return val;
}

static int __devinit tg3_do_test_dma(struct tg3 *tp, u32 *buf, dma_addr_t buf_dma, int size, int to_device)
{
        struct tg3_internal_buffer_desc test_desc;
        u32 sram_dma_descs;
        int i, ret;

        sram_dma_descs = NIC_SRAM_DMA_DESC_POOL_BASE;

        tw32(FTQ_RCVBD_COMP_FIFO_ENQDEQ, 0);
        tw32(FTQ_RCVDATA_COMP_FIFO_ENQDEQ, 0);
        tw32(RDMAC_STATUS, 0);
        tw32(WDMAC_STATUS, 0);

        tw32(BUFMGR_MODE, 0);
        tw32(FTQ_RESET, 0);

        test_desc.addr_hi = ((u64) buf_dma) >> 32;
        test_desc.addr_lo = buf_dma & 0xffffffff;
        test_desc.nic_mbuf = 0x00002100;
        test_desc.len = size;

        /*
         * HP ZX1 was seeing test failures for 5701 cards running at 33Mhz
         * the *second* time the tg3 driver was getting loaded after an
         * initial scan.
         *
         * Broadcom tells me:
         *   ...the DMA engine is connected to the GRC block and a DMA
         *   reset may affect the GRC block in some unpredictable way...
         *   The behavior of resets to individual blocks has not been tested.
         *
         * Broadcom noted the GRC reset will also reset all sub-components.
         */
        if (to_device) {
                test_desc.cqid_sqid = (13 << 8) | 2;

                tw32_f(RDMAC_MODE, RDMAC_MODE_ENABLE);
                udelay(40);
        } else {
                test_desc.cqid_sqid = (16 << 8) | 7;

                tw32_f(WDMAC_MODE, WDMAC_MODE_ENABLE);
                udelay(40);
        }
        test_desc.flags = 0x00000005;

        for (i = 0; i < (sizeof(test_desc) / sizeof(u32)); i++) {
                u32 val;

                val = *(((u32 *)&test_desc) + i);
                pci_write_config_dword(tp->pdev, TG3PCI_MEM_WIN_BASE_ADDR,
                                       sram_dma_descs + (i * sizeof(u32)));
                pci_write_config_dword(tp->pdev, TG3PCI_MEM_WIN_DATA, val);
        }
        pci_write_config_dword(tp->pdev, TG3PCI_MEM_WIN_BASE_ADDR, 0);

        if (to_device)
                tw32(FTQ_DMA_HIGH_READ_FIFO_ENQDEQ, sram_dma_descs);
        else
                tw32(FTQ_DMA_HIGH_WRITE_FIFO_ENQDEQ, sram_dma_descs);

        ret = -ENODEV;
        for (i = 0; i < 40; i++) {
                u32 val;

                if (to_device)
                        val = tr32(FTQ_RCVBD_COMP_FIFO_ENQDEQ);
                else
                        val = tr32(FTQ_RCVDATA_COMP_FIFO_ENQDEQ);
                if ((val & 0xffff) == sram_dma_descs) {
                        ret = 0;
                        break;
                }

                udelay(100);
        }

        return ret;
}

#define TEST_BUFFER_SIZE        0x2000

static DEFINE_PCI_DEVICE_TABLE(tg3_dma_wait_state_chipsets) = {
        { PCI_DEVICE(PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_UNI_N_PCI15) },
        { },
};

static int __devinit tg3_test_dma(struct tg3 *tp)
{
        dma_addr_t buf_dma;
        u32 *buf, saved_dma_rwctrl;
        int ret = 0;

        buf = dma_alloc_coherent(&tp->pdev->dev, TEST_BUFFER_SIZE,
                                 &buf_dma, GFP_KERNEL);
        if (!buf) {
                ret = -ENOMEM;
                goto out_nofree;
        }

        tp->dma_rwctrl = ((0x7 << DMA_RWCTRL_PCI_WRITE_CMD_SHIFT) |
                          (0x6 << DMA_RWCTRL_PCI_READ_CMD_SHIFT));

        tp->dma_rwctrl = tg3_calc_dma_bndry(tp, tp->dma_rwctrl);

        if (tg3_flag(tp, 57765_PLUS))
                goto out;

        if (tg3_flag(tp, PCI_EXPRESS)) {
                /* DMA read watermark not used on PCIE */
                tp->dma_rwctrl |= 0x00180000;
        } else if (!tg3_flag(tp, PCIX_MODE)) {
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705 ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750)
                        tp->dma_rwctrl |= 0x003f0000;
                else
                        tp->dma_rwctrl |= 0x003f000f;
        } else {
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704) {
                        u32 ccval = (tr32(TG3PCI_CLOCK_CTRL) & 0x1f);
                        u32 read_water = 0x7;

                        /* If the 5704 is behind the EPB bridge, we can
                         * do the less restrictive ONE_DMA workaround for
                         * better performance.
                         */
                        if (tg3_flag(tp, 40BIT_DMA_BUG) &&
                            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704)
                                tp->dma_rwctrl |= 0x8000;
                        else if (ccval == 0x6 || ccval == 0x7)
                                tp->dma_rwctrl |= DMA_RWCTRL_ONE_DMA;

                        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703)
                                read_water = 4;
                        /* Set bit 23 to enable PCIX hw bug fix */
                        tp->dma_rwctrl |=
                                (read_water << DMA_RWCTRL_READ_WATER_SHIFT) |
                                (0x3 << DMA_RWCTRL_WRITE_WATER_SHIFT) |
                                (1 << 23);
                } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) {
                        /* 5780 always in PCIX mode */
                        tp->dma_rwctrl |= 0x00144000;
                } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714) {
                        /* 5714 always in PCIX mode */
                        tp->dma_rwctrl |= 0x00148000;
                } else {
                        tp->dma_rwctrl |= 0x001b000f;
                }
        }

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704)
                tp->dma_rwctrl &= 0xfffffff0;

        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700 ||
            GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701) {
                /* Remove this if it causes problems for some boards. */
                tp->dma_rwctrl |= DMA_RWCTRL_USE_MEM_READ_MULT;

                /* On 5700/5701 chips, we need to set this bit.
                 * Otherwise the chip will issue cacheline transactions
                 * to streamable DMA memory with not all the byte
                 * enables turned on.  This is an error on several
                 * RISC PCI controllers, in particular sparc64.
                 *
                 * On 5703/5704 chips, this bit has been reassigned
                 * a different meaning.  In particular, it is used
                 * on those chips to enable a PCI-X workaround.
                 */
                tp->dma_rwctrl |= DMA_RWCTRL_ASSERT_ALL_BE;
        }

        tw32(TG3PCI_DMA_RW_CTRL, tp->dma_rwctrl);

#if 0
        /* Unneeded, already done by tg3_get_invariants.  */
        tg3_switch_clocks(tp);
#endif

        if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700 &&
            GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5701)
                goto out;

        /* It is best to perform DMA test with maximum write burst size
         * to expose the 5700/5701 write DMA bug.
         */
        saved_dma_rwctrl = tp->dma_rwctrl;
        tp->dma_rwctrl &= ~DMA_RWCTRL_WRITE_BNDRY_MASK;
        tw32(TG3PCI_DMA_RW_CTRL, tp->dma_rwctrl);

        while (1) {
                u32 *p = buf, i;

                for (i = 0; i < TEST_BUFFER_SIZE / sizeof(u32); i++)
                        p[i] = i;

                /* Send the buffer to the chip. */
                ret = tg3_do_test_dma(tp, buf, buf_dma, TEST_BUFFER_SIZE, 1);
                if (ret) {
                        dev_err(&tp->pdev->dev,
                                "%s: Buffer write failed. err = %d\n",
                                __func__, ret);
                        break;
                }

#if 0
                /* validate data reached card RAM correctly. */
                for (i = 0; i < TEST_BUFFER_SIZE / sizeof(u32); i++) {
                        u32 val;
                        tg3_read_mem(tp, 0x2100 + (i*4), &val);
                        if (le32_to_cpu(val) != p[i]) {
                                dev_err(&tp->pdev->dev,
                                        "%s: Buffer corrupted on device! "
                                        "(%d != %d)\n", __func__, val, i);
                                /* ret = -ENODEV here? */
                        }
                        p[i] = 0;
                }
#endif
                /* Now read it back. */
                ret = tg3_do_test_dma(tp, buf, buf_dma, TEST_BUFFER_SIZE, 0);
                if (ret) {
                        dev_err(&tp->pdev->dev, "%s: Buffer read failed. "
                                "err = %d\n", __func__, ret);
                        break;
                }

                /* Verify it. */
                for (i = 0; i < TEST_BUFFER_SIZE / sizeof(u32); i++) {
                        if (p[i] == i)
                                continue;

                        if ((tp->dma_rwctrl & DMA_RWCTRL_WRITE_BNDRY_MASK) !=
                            DMA_RWCTRL_WRITE_BNDRY_16) {
                                tp->dma_rwctrl &= ~DMA_RWCTRL_WRITE_BNDRY_MASK;
                                tp->dma_rwctrl |= DMA_RWCTRL_WRITE_BNDRY_16;
                                tw32(TG3PCI_DMA_RW_CTRL, tp->dma_rwctrl);
                                break;
                        } else {
                                dev_err(&tp->pdev->dev,
                                        "%s: Buffer corrupted on read back! "
                                        "(%d != %d)\n", __func__, p[i], i);
                                ret = -ENODEV;
                                goto out;
                        }
                }

                if (i == (TEST_BUFFER_SIZE / sizeof(u32))) {
                        /* Success. */
                        ret = 0;
                        break;
                }
        }
        if ((tp->dma_rwctrl & DMA_RWCTRL_WRITE_BNDRY_MASK) !=
            DMA_RWCTRL_WRITE_BNDRY_16) {
                /* DMA test passed without adjusting DMA boundary,
                 * now look for chipsets that are known to expose the
                 * DMA bug without failing the test.
                 */
                if (pci_dev_present(tg3_dma_wait_state_chipsets)) {
                        tp->dma_rwctrl &= ~DMA_RWCTRL_WRITE_BNDRY_MASK;
                        tp->dma_rwctrl |= DMA_RWCTRL_WRITE_BNDRY_16;
                } else {
                        /* Safe to use the calculated DMA boundary. */
                        tp->dma_rwctrl = saved_dma_rwctrl;
                }

                tw32(TG3PCI_DMA_RW_CTRL, tp->dma_rwctrl);
        }

out:
        dma_free_coherent(&tp->pdev->dev, TEST_BUFFER_SIZE, buf, buf_dma);
out_nofree:
        return ret;
}

static void __devinit tg3_init_bufmgr_config(struct tg3 *tp)
{
        if (tg3_flag(tp, 57765_PLUS)) {
                tp->bufmgr_config.mbuf_read_dma_low_water =
                        DEFAULT_MB_RDMA_LOW_WATER_5705;
                tp->bufmgr_config.mbuf_mac_rx_low_water =
                        DEFAULT_MB_MACRX_LOW_WATER_57765;
                tp->bufmgr_config.mbuf_high_water =
                        DEFAULT_MB_HIGH_WATER_57765;

                tp->bufmgr_config.mbuf_read_dma_low_water_jumbo =
                        DEFAULT_MB_RDMA_LOW_WATER_5705;
                tp->bufmgr_config.mbuf_mac_rx_low_water_jumbo =
                        DEFAULT_MB_MACRX_LOW_WATER_JUMBO_57765;
                tp->bufmgr_config.mbuf_high_water_jumbo =
                        DEFAULT_MB_HIGH_WATER_JUMBO_57765;
        } else if (tg3_flag(tp, 5705_PLUS)) {
                tp->bufmgr_config.mbuf_read_dma_low_water =
                        DEFAULT_MB_RDMA_LOW_WATER_5705;
                tp->bufmgr_config.mbuf_mac_rx_low_water =
                        DEFAULT_MB_MACRX_LOW_WATER_5705;
                tp->bufmgr_config.mbuf_high_water =
                        DEFAULT_MB_HIGH_WATER_5705;
                if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
                        tp->bufmgr_config.mbuf_mac_rx_low_water =
                                DEFAULT_MB_MACRX_LOW_WATER_5906;
                        tp->bufmgr_config.mbuf_high_water =
                                DEFAULT_MB_HIGH_WATER_5906;
                }

                tp->bufmgr_config.mbuf_read_dma_low_water_jumbo =
                        DEFAULT_MB_RDMA_LOW_WATER_JUMBO_5780;
                tp->bufmgr_config.mbuf_mac_rx_low_water_jumbo =
                        DEFAULT_MB_MACRX_LOW_WATER_JUMBO_5780;
                tp->bufmgr_config.mbuf_high_water_jumbo =
                        DEFAULT_MB_HIGH_WATER_JUMBO_5780;
        } else {
                tp->bufmgr_config.mbuf_read_dma_low_water =
                        DEFAULT_MB_RDMA_LOW_WATER;
                tp->bufmgr_config.mbuf_mac_rx_low_water =
                        DEFAULT_MB_MACRX_LOW_WATER;
                tp->bufmgr_config.mbuf_high_water =
                        DEFAULT_MB_HIGH_WATER;

                tp->bufmgr_config.mbuf_read_dma_low_water_jumbo =
                        DEFAULT_MB_RDMA_LOW_WATER_JUMBO;
                tp->bufmgr_config.mbuf_mac_rx_low_water_jumbo =
                        DEFAULT_MB_MACRX_LOW_WATER_JUMBO;
                tp->bufmgr_config.mbuf_high_water_jumbo =
                        DEFAULT_MB_HIGH_WATER_JUMBO;
        }

        tp->bufmgr_config.dma_low_water = DEFAULT_DMA_LOW_WATER;
        tp->bufmgr_config.dma_high_water = DEFAULT_DMA_HIGH_WATER;
}

static char * __devinit tg3_phy_string(struct tg3 *tp)
{
        switch (tp->phy_id & TG3_PHY_ID_MASK) {
        case TG3_PHY_ID_BCM5400:        return "5400";
        case TG3_PHY_ID_BCM5401:        return "5401";
        case TG3_PHY_ID_BCM5411:        return "5411";
        case TG3_PHY_ID_BCM5701:        return "5701";
        case TG3_PHY_ID_BCM5703:        return "5703";
        case TG3_PHY_ID_BCM5704:        return "5704";
        case TG3_PHY_ID_BCM5705:        return "5705";
        case TG3_PHY_ID_BCM5750:        return "5750";
        case TG3_PHY_ID_BCM5752:        return "5752";
        case TG3_PHY_ID_BCM5714:        return "5714";
        case TG3_PHY_ID_BCM5780:        return "5780";
        case TG3_PHY_ID_BCM5755:        return "5755";
        case TG3_PHY_ID_BCM5787:        return "5787";
        case TG3_PHY_ID_BCM5784:        return "5784";
        case TG3_PHY_ID_BCM5756:        return "5722/5756";
        case TG3_PHY_ID_BCM5906:        return "5906";
        case TG3_PHY_ID_BCM5761:        return "5761";
        case TG3_PHY_ID_BCM5718C:       return "5718C";
        case TG3_PHY_ID_BCM5718S:       return "5718S";
        case TG3_PHY_ID_BCM57765:       return "57765";
        case TG3_PHY_ID_BCM5719C:       return "5719C";
        case TG3_PHY_ID_BCM5720C:       return "5720C";
        case TG3_PHY_ID_BCM8002:        return "8002/serdes";
        case 0:                 return "serdes";
        default:                return "unknown";
        }
}

static char * __devinit tg3_bus_string(struct tg3 *tp, char *str)
{
        if (tg3_flag(tp, PCI_EXPRESS)) {
                strcpy(str, "PCI Express");
                return str;
        } else if (tg3_flag(tp, PCIX_MODE)) {
                u32 clock_ctrl = tr32(TG3PCI_CLOCK_CTRL) & 0x1f;

                strcpy(str, "PCIX:");

                if ((clock_ctrl == 7) ||
                    ((tr32(GRC_MISC_CFG) & GRC_MISC_CFG_BOARD_ID_MASK) ==
                     GRC_MISC_CFG_BOARD_ID_5704CIOBE))
                        strcat(str, "133MHz");
                else if (clock_ctrl == 0)
                        strcat(str, "33MHz");
                else if (clock_ctrl == 2)
                        strcat(str, "50MHz");
                else if (clock_ctrl == 4)
                        strcat(str, "66MHz");
                else if (clock_ctrl == 6)
                        strcat(str, "100MHz");
        } else {
                strcpy(str, "PCI:");
                if (tg3_flag(tp, PCI_HIGH_SPEED))
                        strcat(str, "66MHz");
                else
                        strcat(str, "33MHz");
        }
        if (tg3_flag(tp, PCI_32BIT))
                strcat(str, ":32-bit");
        else
                strcat(str, ":64-bit");
        return str;
}

static struct pci_dev * __devinit tg3_find_peer(struct tg3 *tp)
{
        struct pci_dev *peer;
        unsigned int func, devnr = tp->pdev->devfn & ~7;

        for (func = 0; func < 8; func++) {
                peer = pci_get_slot(tp->pdev->bus, devnr | func);
                if (peer && peer != tp->pdev)
                        break;
                pci_dev_put(peer);
        }
        /* 5704 can be configured in single-port mode, set peer to
         * tp->pdev in that case.
         */
        if (!peer) {
                peer = tp->pdev;
                return peer;
        }

        /*
         * We don't need to keep the refcount elevated; there's no way
         * to remove one half of this device without removing the other
         */
        pci_dev_put(peer);

        return peer;
}

static void __devinit tg3_init_coal(struct tg3 *tp)
{
        struct ethtool_coalesce *ec = &tp->coal;

        memset(ec, 0, sizeof(*ec));
        ec->cmd = ETHTOOL_GCOALESCE;
        ec->rx_coalesce_usecs = LOW_RXCOL_TICKS;
        ec->tx_coalesce_usecs = LOW_TXCOL_TICKS;
        ec->rx_max_coalesced_frames = LOW_RXMAX_FRAMES;
        ec->tx_max_coalesced_frames = LOW_TXMAX_FRAMES;
        ec->rx_coalesce_usecs_irq = DEFAULT_RXCOAL_TICK_INT;
        ec->tx_coalesce_usecs_irq = DEFAULT_TXCOAL_TICK_INT;
        ec->rx_max_coalesced_frames_irq = DEFAULT_RXCOAL_MAXF_INT;
        ec->tx_max_coalesced_frames_irq = DEFAULT_TXCOAL_MAXF_INT;
        ec->stats_block_coalesce_usecs = DEFAULT_STAT_COAL_TICKS;

        if (tp->coalesce_mode & (HOSTCC_MODE_CLRTICK_RXBD |
                                 HOSTCC_MODE_CLRTICK_TXBD)) {
                ec->rx_coalesce_usecs = LOW_RXCOL_TICKS_CLRTCKS;
                ec->rx_coalesce_usecs_irq = DEFAULT_RXCOAL_TICK_INT_CLRTCKS;
                ec->tx_coalesce_usecs = LOW_TXCOL_TICKS_CLRTCKS;
                ec->tx_coalesce_usecs_irq = DEFAULT_TXCOAL_TICK_INT_CLRTCKS;
        }

        if (tg3_flag(tp, 5705_PLUS)) {
                ec->rx_coalesce_usecs_irq = 0;
                ec->tx_coalesce_usecs_irq = 0;
                ec->stats_block_coalesce_usecs = 0;
        }
}

static const struct net_device_ops tg3_netdev_ops = {
        .ndo_open               = tg3_open,
        .ndo_stop               = tg3_close,
        .ndo_start_xmit         = tg3_start_xmit,
        .ndo_get_stats64        = tg3_get_stats64,
        .ndo_validate_addr      = eth_validate_addr,
        .ndo_set_rx_mode        = tg3_set_rx_mode,
        .ndo_set_mac_address    = tg3_set_mac_addr,
        .ndo_do_ioctl           = tg3_ioctl,
        .ndo_tx_timeout         = tg3_tx_timeout,
        .ndo_change_mtu         = tg3_change_mtu,
        .ndo_fix_features       = tg3_fix_features,
        .ndo_set_features       = tg3_set_features,
#ifdef CONFIG_NET_POLL_CONTROLLER
        .ndo_poll_controller    = tg3_poll_controller,
#endif
};

static int __devinit tg3_init_one(struct pci_dev *pdev,
                                  const struct pci_device_id *ent)
{
        struct net_device *dev;
        struct tg3 *tp;
        int i, err, pm_cap;
        u32 sndmbx, rcvmbx, intmbx;
        char str[40];
        u64 dma_mask, persist_dma_mask;
        u32 features = 0;

        printk_once(KERN_INFO "%s\n", version);

        err = pci_enable_device(pdev);
        if (err) {
                dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
                return err;
        }

        err = pci_request_regions(pdev, DRV_MODULE_NAME);
        if (err) {
                dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
                goto err_out_disable_pdev;
        }

        pci_set_master(pdev);

        /* Find power-management capability. */
        pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
        if (pm_cap == 0) {
                dev_err(&pdev->dev,
                        "Cannot find Power Management capability, aborting\n");
                err = -EIO;
                goto err_out_free_res;
        }

        err = pci_set_power_state(pdev, PCI_D0);
        if (err) {
                dev_err(&pdev->dev, "Transition to D0 failed, aborting\n");
                goto err_out_free_res;
        }

        dev = alloc_etherdev_mq(sizeof(*tp), TG3_IRQ_MAX_VECS);
        if (!dev) {
                dev_err(&pdev->dev, "Etherdev alloc failed, aborting\n");
                err = -ENOMEM;
                goto err_out_power_down;
        }

        SET_NETDEV_DEV(dev, &pdev->dev);

        tp = netdev_priv(dev);
        tp->pdev = pdev;
        tp->dev = dev;
        tp->pm_cap = pm_cap;
        tp->rx_mode = TG3_DEF_RX_MODE;
        tp->tx_mode = TG3_DEF_TX_MODE;

        if (tg3_debug > 0)
                tp->msg_enable = tg3_debug;
        else
                tp->msg_enable = TG3_DEF_MSG_ENABLE;

        /* The word/byte swap controls here control register access byte
         * swapping.  DMA data byte swapping is controlled in the GRC_MODE
         * setting below.
         */
        tp->misc_host_ctrl =
                MISC_HOST_CTRL_MASK_PCI_INT |
                MISC_HOST_CTRL_WORD_SWAP |
                MISC_HOST_CTRL_INDIR_ACCESS |
                MISC_HOST_CTRL_PCISTATE_RW;

        /* The NONFRM (non-frame) byte/word swap controls take effect
         * on descriptor entries, anything which isn't packet data.
         *
         * The StrongARM chips on the board (one for tx, one for rx)
         * are running in big-endian mode.
         */
        tp->grc_mode = (GRC_MODE_WSWAP_DATA | GRC_MODE_BSWAP_DATA |
                        GRC_MODE_WSWAP_NONFRM_DATA);
#ifdef __BIG_ENDIAN
        tp->grc_mode |= GRC_MODE_BSWAP_NONFRM_DATA;
#endif
        spin_lock_init(&tp->lock);
        spin_lock_init(&tp->indirect_lock);
        INIT_WORK(&tp->reset_task, tg3_reset_task);

        tp->regs = pci_ioremap_bar(pdev, BAR_0);
        if (!tp->regs) {
                dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
                err = -ENOMEM;
                goto err_out_free_dev;
        }

        if (tp->pdev->device == PCI_DEVICE_ID_TIGON3_5761 ||
            tp->pdev->device == PCI_DEVICE_ID_TIGON3_5761E ||
            tp->pdev->device == TG3PCI_DEVICE_TIGON3_5761S ||
            tp->pdev->device == TG3PCI_DEVICE_TIGON3_5761SE ||
            tp->pdev->device == TG3PCI_DEVICE_TIGON3_5717 ||
            tp->pdev->device == TG3PCI_DEVICE_TIGON3_5718 ||
            tp->pdev->device == TG3PCI_DEVICE_TIGON3_5719 ||
            tp->pdev->device == TG3PCI_DEVICE_TIGON3_5720) {
                tg3_flag_set(tp, ENABLE_APE);
                tp->aperegs = pci_ioremap_bar(pdev, BAR_2);
                if (!tp->aperegs) {
                        dev_err(&pdev->dev,
                                "Cannot map APE registers, aborting\n");
                        err = -ENOMEM;
                        goto err_out_iounmap;
                }
        }

        tp->rx_pending = TG3_DEF_RX_RING_PENDING;
        tp->rx_jumbo_pending = TG3_DEF_RX_JUMBO_RING_PENDING;

        dev->ethtool_ops = &tg3_ethtool_ops;
        dev->watchdog_timeo = TG3_TX_TIMEOUT;
        dev->netdev_ops = &tg3_netdev_ops;
        dev->irq = pdev->irq;

        err = tg3_get_invariants(tp);
        if (err) {
                dev_err(&pdev->dev,
                        "Problem fetching invariants of chip, aborting\n");
                goto err_out_apeunmap;
        }

        /* The EPB bridge inside 5714, 5715, and 5780 and any
         * device behind the EPB cannot support DMA addresses > 40-bit.
         * On 64-bit systems with IOMMU, use 40-bit dma_mask.
         * On 64-bit systems without IOMMU, use 64-bit dma_mask and
         * do DMA address check in tg3_start_xmit().
         */
        if (tg3_flag(tp, IS_5788))
                persist_dma_mask = dma_mask = DMA_BIT_MASK(32);
        else if (tg3_flag(tp, 40BIT_DMA_BUG)) {
                persist_dma_mask = dma_mask = DMA_BIT_MASK(40);
#ifdef CONFIG_HIGHMEM
                dma_mask = DMA_BIT_MASK(64);
#endif
        } else
                persist_dma_mask = dma_mask = DMA_BIT_MASK(64);

        /* Configure DMA attributes. */
        if (dma_mask > DMA_BIT_MASK(32)) {
                err = pci_set_dma_mask(pdev, dma_mask);
                if (!err) {
                        features |= NETIF_F_HIGHDMA;
                        err = pci_set_consistent_dma_mask(pdev,
                                                          persist_dma_mask);
                        if (err < 0) {
                                dev_err(&pdev->dev, "Unable to obtain 64 bit "
                                        "DMA for consistent allocations\n");
                                goto err_out_apeunmap;
                        }
                }
        }
        if (err || dma_mask == DMA_BIT_MASK(32)) {
                err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
                if (err) {
                        dev_err(&pdev->dev,
                                "No usable DMA configuration, aborting\n");
                        goto err_out_apeunmap;
                }
        }

        tg3_init_bufmgr_config(tp);

        features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;

        /* 5700 B0 chips do not support checksumming correctly due
         * to hardware bugs.
         */
        if (tp->pci_chip_rev_id != CHIPREV_ID_5700_B0) {
                features |= NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_RXCSUM;

                if (tg3_flag(tp, 5755_PLUS))
                        features |= NETIF_F_IPV6_CSUM;
        }

        /* TSO is on by default on chips that support hardware TSO.
         * Firmware TSO on older chips gives lower performance, so it
         * is off by default, but can be enabled using ethtool.
         */
        if ((tg3_flag(tp, HW_TSO_1) ||
             tg3_flag(tp, HW_TSO_2) ||
             tg3_flag(tp, HW_TSO_3)) &&
            (features & NETIF_F_IP_CSUM))
                features |= NETIF_F_TSO;
        if (tg3_flag(tp, HW_TSO_2) || tg3_flag(tp, HW_TSO_3)) {
                if (features & NETIF_F_IPV6_CSUM)
                        features |= NETIF_F_TSO6;
                if (tg3_flag(tp, HW_TSO_3) ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761 ||
                    (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 &&
                     GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5784_AX) ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785 ||
                    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780)
                        features |= NETIF_F_TSO_ECN;
        }

        dev->features |= features;
        dev->vlan_features |= features;

        /*
         * Add loopback capability only for a subset of devices that support
         * MAC-LOOPBACK. Eventually this need to be enhanced to allow INT-PHY
         * loopback for the remaining devices.
         */
        if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5780 &&
            !tg3_flag(tp, CPMU_PRESENT))
                /* Add the loopback capability */
                features |= NETIF_F_LOOPBACK;

        dev->hw_features |= features;

        if (tp->pci_chip_rev_id == CHIPREV_ID_5705_A1 &&
            !tg3_flag(tp, TSO_CAPABLE) &&
            !(tr32(TG3PCI_PCISTATE) & PCISTATE_BUS_SPEED_HIGH)) {
                tg3_flag_set(tp, MAX_RXPEND_64);
                tp->rx_pending = 63;
        }

        err = tg3_get_device_address(tp);
        if (err) {
                dev_err(&pdev->dev,
                        "Could not obtain valid ethernet address, aborting\n");
                goto err_out_apeunmap;
        }

        /*
         * Reset chip in case UNDI or EFI driver did not shutdown
         * DMA self test will enable WDMAC and we'll see (spurious)
         * pending DMA on the PCI bus at that point.
         */
        if ((tr32(HOSTCC_MODE) & HOSTCC_MODE_ENABLE) ||
            (tr32(WDMAC_MODE) & WDMAC_MODE_ENABLE)) {
                tw32(MEMARB_MODE, MEMARB_MODE_ENABLE);
                tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
        }

        err = tg3_test_dma(tp);
        if (err) {
                dev_err(&pdev->dev, "DMA engine test failed, aborting\n");
                goto err_out_apeunmap;
        }

        intmbx = MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW;
        rcvmbx = MAILBOX_RCVRET_CON_IDX_0 + TG3_64BIT_REG_LOW;
        sndmbx = MAILBOX_SNDHOST_PROD_IDX_0 + TG3_64BIT_REG_LOW;
        for (i = 0; i < tp->irq_max; i++) {
                struct tg3_napi *tnapi = &tp->napi[i];

                tnapi->tp = tp;
                tnapi->tx_pending = TG3_DEF_TX_RING_PENDING;

                tnapi->int_mbox = intmbx;
                if (i <= 4)
                        intmbx += 0x8;
                else
                        intmbx += 0x4;

                tnapi->consmbox = rcvmbx;
                tnapi->prodmbox = sndmbx;

                if (i)
                        tnapi->coal_now = HOSTCC_MODE_COAL_VEC1_NOW << (i - 1);
                else
                        tnapi->coal_now = HOSTCC_MODE_NOW;

                if (!tg3_flag(tp, SUPPORT_MSIX))
                        break;

                /*
                 * If we support MSIX, we'll be using RSS.  If we're using
                 * RSS, the first vector only handles link interrupts and the
                 * remaining vectors handle rx and tx interrupts.  Reuse the
                 * mailbox values for the next iteration.  The values we setup
                 * above are still useful for the single vectored mode.
                 */
                if (!i)
                        continue;

                rcvmbx += 0x8;

                if (sndmbx & 0x4)
                        sndmbx -= 0x4;
                else
                        sndmbx += 0xc;
        }

        tg3_init_coal(tp);

        pci_set_drvdata(pdev, dev);

        if (tg3_flag(tp, 5717_PLUS)) {
                /* Resume a low-power mode */
                tg3_frob_aux_power(tp, false);
        }

        err = register_netdev(dev);
        if (err) {
                dev_err(&pdev->dev, "Cannot register net device, aborting\n");
                goto err_out_apeunmap;
        }

        netdev_info(dev, "Tigon3 [partno(%s) rev %04x] (%s) MAC address %pM\n",
                    tp->board_part_number,
                    tp->pci_chip_rev_id,
                    tg3_bus_string(tp, str),
                    dev->dev_addr);

        if (tp->phy_flags & TG3_PHYFLG_IS_CONNECTED) {
                struct phy_device *phydev;
                phydev = tp->mdio_bus->phy_map[TG3_PHY_MII_ADDR];
                netdev_info(dev,
                            "attached PHY driver [%s] (mii_bus:phy_addr=%s)\n",
                            phydev->drv->name, dev_name(&phydev->dev));
        } else {
                char *ethtype;

                if (tp->phy_flags & TG3_PHYFLG_10_100_ONLY)
                        ethtype = "10/100Base-TX";
                else if (tp->phy_flags & TG3_PHYFLG_ANY_SERDES)
                        ethtype = "1000Base-SX";
                else
                        ethtype = "10/100/1000Base-T";

                netdev_info(dev, "attached PHY is %s (%s Ethernet) "
                            "(WireSpeed[%d], EEE[%d])\n",
                            tg3_phy_string(tp), ethtype,
                            (tp->phy_flags & TG3_PHYFLG_NO_ETH_WIRE_SPEED) == 0,
                            (tp->phy_flags & TG3_PHYFLG_EEE_CAP) != 0);
        }

        netdev_info(dev, "RXcsums[%d] LinkChgREG[%d] MIirq[%d] ASF[%d] TSOcap[%d]\n",
                    (dev->features & NETIF_F_RXCSUM) != 0,
                    tg3_flag(tp, USE_LINKCHG_REG) != 0,
                    (tp->phy_flags & TG3_PHYFLG_USE_MI_INTERRUPT) != 0,
                    tg3_flag(tp, ENABLE_ASF) != 0,
                    tg3_flag(tp, TSO_CAPABLE) != 0);
        netdev_info(dev, "dma_rwctrl[%08x] dma_mask[%d-bit]\n",
                    tp->dma_rwctrl,
                    pdev->dma_mask == DMA_BIT_MASK(32) ? 32 :
                    ((u64)pdev->dma_mask) == DMA_BIT_MASK(40) ? 40 : 64);

        pci_save_state(pdev);

        return 0;

err_out_apeunmap:
        if (tp->aperegs) {
                iounmap(tp->aperegs);
                tp->aperegs = NULL;
        }

err_out_iounmap:
        if (tp->regs) {
                iounmap(tp->regs);
                tp->regs = NULL;
        }

err_out_free_dev:
        free_netdev(dev);

err_out_power_down:
        pci_set_power_state(pdev, PCI_D3hot);

err_out_free_res:
        pci_release_regions(pdev);

err_out_disable_pdev:
        pci_disable_device(pdev);
        pci_set_drvdata(pdev, NULL);
        return err;
}

static void __devexit tg3_remove_one(struct pci_dev *pdev)
{
        struct net_device *dev = pci_get_drvdata(pdev);

        if (dev) {
                struct tg3 *tp = netdev_priv(dev);

                if (tp->fw)
                        release_firmware(tp->fw);

                tg3_reset_task_cancel(tp);

                if (tg3_flag(tp, USE_PHYLIB)) {
                        tg3_phy_fini(tp);
                        tg3_mdio_fini(tp);
                }

                unregister_netdev(dev);
                if (tp->aperegs) {
                        iounmap(tp->aperegs);
                        tp->aperegs = NULL;
                }
                if (tp->regs) {
                        iounmap(tp->regs);
                        tp->regs = NULL;
                }
                free_netdev(dev);
                pci_release_regions(pdev);
                pci_disable_device(pdev);
                pci_set_drvdata(pdev, NULL);
        }
}

#ifdef CONFIG_PM_SLEEP
static int tg3_suspend(struct device *device)
{
        struct pci_dev *pdev = to_pci_dev(device);
        struct net_device *dev = pci_get_drvdata(pdev);
        struct tg3 *tp = netdev_priv(dev);
        int err;

        if (!netif_running(dev))
                return 0;

        tg3_reset_task_cancel(tp);
        tg3_phy_stop(tp);
        tg3_netif_stop(tp);

        del_timer_sync(&tp->timer);

        tg3_full_lock(tp, 1);
        tg3_disable_ints(tp);
        tg3_full_unlock(tp);

        netif_device_detach(dev);

        tg3_full_lock(tp, 0);
        tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
        tg3_flag_clear(tp, INIT_COMPLETE);
        tg3_full_unlock(tp);

        err = tg3_power_down_prepare(tp);
        if (err) {
                int err2;

                tg3_full_lock(tp, 0);

                tg3_flag_set(tp, INIT_COMPLETE);
                err2 = tg3_restart_hw(tp, 1);
                if (err2)
                        goto out;

                tp->timer.expires = jiffies + tp->timer_offset;
                add_timer(&tp->timer);

                netif_device_attach(dev);
                tg3_netif_start(tp);

out:
                tg3_full_unlock(tp);

                if (!err2)
                        tg3_phy_start(tp);
        }

        return err;
}

static int tg3_resume(struct device *device)
{
        struct pci_dev *pdev = to_pci_dev(device);
        struct net_device *dev = pci_get_drvdata(pdev);
        struct tg3 *tp = netdev_priv(dev);
        int err;

        if (!netif_running(dev))
                return 0;

        netif_device_attach(dev);

        tg3_full_lock(tp, 0);

        tg3_flag_set(tp, INIT_COMPLETE);
        err = tg3_restart_hw(tp, 1);
        if (err)
                goto out;

        tp->timer.expires = jiffies + tp->timer_offset;
        add_timer(&tp->timer);

        tg3_netif_start(tp);

out:
        tg3_full_unlock(tp);

        if (!err)
                tg3_phy_start(tp);

        return err;
}

static SIMPLE_DEV_PM_OPS(tg3_pm_ops, tg3_suspend, tg3_resume);
#define TG3_PM_OPS (&tg3_pm_ops)

#else

#define TG3_PM_OPS NULL

#endif /* CONFIG_PM_SLEEP */

/**
 * tg3_io_error_detected - called when PCI error is detected
 * @pdev: Pointer to PCI device
 * @state: The current pci connection state
 *
 * This function is called after a PCI bus error affecting
 * this device has been detected.
 */
static pci_ers_result_t tg3_io_error_detected(struct pci_dev *pdev,
                                              pci_channel_state_t state)
{
        struct net_device *netdev = pci_get_drvdata(pdev);
        struct tg3 *tp = netdev_priv(netdev);
        pci_ers_result_t err = PCI_ERS_RESULT_NEED_RESET;

        netdev_info(netdev, "PCI I/O error detected\n");

        rtnl_lock();

        if (!netif_running(netdev))
                goto done;

        tg3_phy_stop(tp);

        tg3_netif_stop(tp);

        del_timer_sync(&tp->timer);

        /* Want to make sure that the reset task doesn't run */
        tg3_reset_task_cancel(tp);
        tg3_flag_clear(tp, TX_RECOVERY_PENDING);

        netif_device_detach(netdev);

        /* Clean up software state, even if MMIO is blocked */
        tg3_full_lock(tp, 0);
        tg3_halt(tp, RESET_KIND_SHUTDOWN, 0);
        tg3_full_unlock(tp);

done:
        if (state == pci_channel_io_perm_failure)
                err = PCI_ERS_RESULT_DISCONNECT;
        else
                pci_disable_device(pdev);

        rtnl_unlock();

        return err;
}

/**
 * tg3_io_slot_reset - called after the pci bus has been reset.
 * @pdev: Pointer to PCI device
 *
 * Restart the card from scratch, as if from a cold-boot.
 * At this point, the card has exprienced a hard reset,
 * followed by fixups by BIOS, and has its config space
 * set up identically to what it was at cold boot.
 */
static pci_ers_result_t tg3_io_slot_reset(struct pci_dev *pdev)
{
        struct net_device *netdev = pci_get_drvdata(pdev);
        struct tg3 *tp = netdev_priv(netdev);
        pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
        int err;

        rtnl_lock();

        if (pci_enable_device(pdev)) {
                netdev_err(netdev, "Cannot re-enable PCI device after reset.\n");
                goto done;
        }

        pci_set_master(pdev);
        pci_restore_state(pdev);
        pci_save_state(pdev);

        if (!netif_running(netdev)) {
                rc = PCI_ERS_RESULT_RECOVERED;
                goto done;
        }

        err = tg3_power_up(tp);
        if (err)
                goto done;

        rc = PCI_ERS_RESULT_RECOVERED;

done:
        rtnl_unlock();

        return rc;
}

/**
 * tg3_io_resume - called when traffic can start flowing again.
 * @pdev: Pointer to PCI device
 *
 * This callback is called when the error recovery driver tells
 * us that its OK to resume normal operation.
 */
static void tg3_io_resume(struct pci_dev *pdev)
{
        struct net_device *netdev = pci_get_drvdata(pdev);
        struct tg3 *tp = netdev_priv(netdev);
        int err;

        rtnl_lock();

        if (!netif_running(netdev))
                goto done;

        tg3_full_lock(tp, 0);
        tg3_flag_set(tp, INIT_COMPLETE);
        err = tg3_restart_hw(tp, 1);
        tg3_full_unlock(tp);
        if (err) {
                netdev_err(netdev, "Cannot restart hardware after reset.\n");
                goto done;
        }

        netif_device_attach(netdev);

        tp->timer.expires = jiffies + tp->timer_offset;
        add_timer(&tp->timer);

        tg3_netif_start(tp);

        tg3_phy_start(tp);

done:
        rtnl_unlock();
}

static struct pci_error_handlers tg3_err_handler = {
        .error_detected = tg3_io_error_detected,
        .slot_reset     = tg3_io_slot_reset,
        .resume         = tg3_io_resume
};

static struct pci_driver tg3_driver = {
        .name           = DRV_MODULE_NAME,
        .id_table       = tg3_pci_tbl,
        .probe          = tg3_init_one,
        .remove         = __devexit_p(tg3_remove_one),
        .err_handler    = &tg3_err_handler,
        .driver.pm      = TG3_PM_OPS,
};

static int __init tg3_init(void)
{
        return pci_register_driver(&tg3_driver);
}

static void __exit tg3_cleanup(void)
{
        pci_unregister_driver(&tg3_driver);
}

module_init(tg3_init);
module_exit(tg3_cleanup);