+++ /dev/null
-/*
- * (C) Copyright 2000
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <malloc.h>
-#include <commproc.h>
-#include <net.h>
-#include <command.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#undef ET_DEBUG
-
-#if defined(CONFIG_CMD_NET) && \
- (defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FEC1) || defined(CONFIG_ETHER_ON_FEC2))
-
-/* compatibility test, if only FEC_ENET defined assume ETHER on FEC1 */
-#if defined(FEC_ENET) && !defined(CONFIG_ETHER_ON_FEC1) && !defined(CONFIG_ETHER_ON_FEC2)
-#define CONFIG_ETHER_ON_FEC1 1
-#endif
-
-/* define WANT_MII when MII support is required */
-#if defined(CONFIG_SYS_DISCOVER_PHY) || defined(CONFIG_FEC1_PHY) || defined(CONFIG_FEC2_PHY)
-#define WANT_MII
-#else
-#undef WANT_MII
-#endif
-
-#if defined(WANT_MII)
-#include <miiphy.h>
-
-#if !(defined(CONFIG_MII) || defined(CONFIG_CMD_MII))
-#error "CONFIG_MII has to be defined!"
-#endif
-
-#endif
-
-#if defined(CONFIG_RMII) && !defined(WANT_MII)
-#error RMII support is unusable without a working PHY.
-#endif
-
-#ifdef CONFIG_SYS_DISCOVER_PHY
-static int mii_discover_phy(struct eth_device *dev);
-#endif
-
-int fec8xx_miiphy_read(char *devname, unsigned char addr,
- unsigned char reg, unsigned short *value);
-int fec8xx_miiphy_write(char *devname, unsigned char addr,
- unsigned char reg, unsigned short value);
-
-static struct ether_fcc_info_s
-{
- int ether_index;
- int fecp_offset;
- int phy_addr;
- int actual_phy_addr;
- int initialized;
-}
- ether_fcc_info[] = {
-#if defined(CONFIG_ETHER_ON_FEC1)
- {
- 0,
- offsetof(immap_t, im_cpm.cp_fec1),
-#if defined(CONFIG_FEC1_PHY)
- CONFIG_FEC1_PHY,
-#else
- -1, /* discover */
-#endif
- -1,
- 0,
-
- },
-#endif
-#if defined(CONFIG_ETHER_ON_FEC2)
- {
- 1,
- offsetof(immap_t, im_cpm.cp_fec2),
-#if defined(CONFIG_FEC2_PHY)
- CONFIG_FEC2_PHY,
-#else
- -1,
-#endif
- -1,
- 0,
- },
-#endif
-};
-
-/* Ethernet Transmit and Receive Buffers */
-#define DBUF_LENGTH 1520
-
-#define TX_BUF_CNT 2
-
-#define TOUT_LOOP 100
-
-#define PKT_MAXBUF_SIZE 1518
-#define PKT_MINBUF_SIZE 64
-#define PKT_MAXBLR_SIZE 1520
-
-#ifdef __GNUC__
-static char txbuf[DBUF_LENGTH] __attribute__ ((aligned(8)));
-#else
-#error txbuf must be aligned.
-#endif
-
-static uint rxIdx; /* index of the current RX buffer */
-static uint txIdx; /* index of the current TX buffer */
-
-/*
- * FEC Ethernet Tx and Rx buffer descriptors allocated at the
- * immr->udata_bd address on Dual-Port RAM
- * Provide for Double Buffering
- */
-
-typedef volatile struct CommonBufferDescriptor {
- cbd_t rxbd[PKTBUFSRX]; /* Rx BD */
- cbd_t txbd[TX_BUF_CNT]; /* Tx BD */
-} RTXBD;
-
-static RTXBD *rtx = NULL;
-
-static int fec_send(struct eth_device* dev, volatile void *packet, int length);
-static int fec_recv(struct eth_device* dev);
-static int fec_init(struct eth_device* dev, bd_t * bd);
-static void fec_halt(struct eth_device* dev);
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-static void __mii_init(void);
-#endif
-
-int fec_initialize(bd_t *bis)
-{
- struct eth_device* dev;
- struct ether_fcc_info_s *efis;
- int i;
-
- for (i = 0; i < sizeof(ether_fcc_info) / sizeof(ether_fcc_info[0]); i++) {
-
- dev = malloc(sizeof(*dev));
- if (dev == NULL)
- hang();
-
- memset(dev, 0, sizeof(*dev));
-
- /* for FEC1 make sure that the name of the interface is the same
- as the old one for compatibility reasons */
- if (i == 0) {
- sprintf (dev->name, "FEC ETHERNET");
- } else {
- sprintf (dev->name, "FEC%d ETHERNET",
- ether_fcc_info[i].ether_index + 1);
- }
-
- efis = ðer_fcc_info[i];
-
- /*
- * reset actual phy addr
- */
- efis->actual_phy_addr = -1;
-
- dev->priv = efis;
- dev->init = fec_init;
- dev->halt = fec_halt;
- dev->send = fec_send;
- dev->recv = fec_recv;
-
- eth_register(dev);
-
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
- miiphy_register(dev->name,
- fec8xx_miiphy_read, fec8xx_miiphy_write);
-#endif
- }
- return 1;
-}
-
-static int fec_send(struct eth_device* dev, volatile void *packet, int length)
-{
- int j, rc;
- struct ether_fcc_info_s *efis = dev->priv;
- volatile fec_t *fecp = (volatile fec_t *)(CONFIG_SYS_IMMR + efis->fecp_offset);
-
- /* section 16.9.23.3
- * Wait for ready
- */
- j = 0;
- while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
- udelay(1);
- j++;
- }
- if (j>=TOUT_LOOP) {
- printf("TX not ready\n");
- }
-
- rtx->txbd[txIdx].cbd_bufaddr = (uint)packet;
- rtx->txbd[txIdx].cbd_datlen = length;
- rtx->txbd[txIdx].cbd_sc |= BD_ENET_TX_READY | BD_ENET_TX_LAST;
- __asm__ ("eieio");
-
- /* Activate transmit Buffer Descriptor polling */
- fecp->fec_x_des_active = 0x01000000; /* Descriptor polling active */
-
- j = 0;
- while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
-#if defined(CONFIG_ICU862)
- udelay(10);
-#else
- udelay(1);
-#endif
- j++;
- }
- if (j>=TOUT_LOOP) {
- printf("TX timeout\n");
- }
-#ifdef ET_DEBUG
- printf("%s[%d] %s: cycles: %d status: %x retry cnt: %d\n",
- __FILE__,__LINE__,__FUNCTION__,j,rtx->txbd[txIdx].cbd_sc,
- (rtx->txbd[txIdx].cbd_sc & 0x003C)>>2);
-#endif
- /* return only status bits */;
- rc = (rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_STATS);
-
- txIdx = (txIdx + 1) % TX_BUF_CNT;
-
- return rc;
-}
-
-static int fec_recv (struct eth_device *dev)
-{
- struct ether_fcc_info_s *efis = dev->priv;
- volatile fec_t *fecp =
- (volatile fec_t *) (CONFIG_SYS_IMMR + efis->fecp_offset);
- int length;
-
- for (;;) {
- /* section 16.9.23.2 */
- if (rtx->rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
- length = -1;
- break; /* nothing received - leave for() loop */
- }
-
- length = rtx->rxbd[rxIdx].cbd_datlen;
-
- if (rtx->rxbd[rxIdx].cbd_sc & 0x003f) {
-#ifdef ET_DEBUG
- printf ("%s[%d] err: %x\n",
- __FUNCTION__, __LINE__,
- rtx->rxbd[rxIdx].cbd_sc);
-#endif
- } else {
- volatile uchar *rx = NetRxPackets[rxIdx];
-
- length -= 4;
-
-#if defined(CONFIG_CMD_CDP)
- if ((rx[0] & 1) != 0
- && memcmp ((uchar *) rx, NetBcastAddr, 6) != 0
- && memcmp ((uchar *) rx, NetCDPAddr, 6) != 0)
- rx = NULL;
-#endif
- /*
- * Pass the packet up to the protocol layers.
- */
- if (rx != NULL)
- NetReceive (rx, length);
- }
-
- /* Give the buffer back to the FEC. */
- rtx->rxbd[rxIdx].cbd_datlen = 0;
-
- /* wrap around buffer index when necessary */
- if ((rxIdx + 1) >= PKTBUFSRX) {
- rtx->rxbd[PKTBUFSRX - 1].cbd_sc =
- (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
- rxIdx = 0;
- } else {
- rtx->rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
- rxIdx++;
- }
-
- __asm__ ("eieio");
-
- /* Try to fill Buffer Descriptors */
- fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
- }
-
- return length;
-}
-
-/**************************************************************
- *
- * FEC Ethernet Initialization Routine
- *
- *************************************************************/
-
-#define FEC_ECNTRL_PINMUX 0x00000004
-#define FEC_ECNTRL_ETHER_EN 0x00000002
-#define FEC_ECNTRL_RESET 0x00000001
-
-#define FEC_RCNTRL_BC_REJ 0x00000010
-#define FEC_RCNTRL_PROM 0x00000008
-#define FEC_RCNTRL_MII_MODE 0x00000004
-#define FEC_RCNTRL_DRT 0x00000002
-#define FEC_RCNTRL_LOOP 0x00000001
-
-#define FEC_TCNTRL_FDEN 0x00000004
-#define FEC_TCNTRL_HBC 0x00000002
-#define FEC_TCNTRL_GTS 0x00000001
-
-#define FEC_RESET_DELAY 50
-
-#if defined(CONFIG_RMII)
-
-static inline void fec_10Mbps(struct eth_device *dev)
-{
- struct ether_fcc_info_s *efis = dev->priv;
- int fecidx = efis->ether_index;
- uint mask = (fecidx == 0) ? 0x0000010 : 0x0000008;
-
- if ((unsigned int)fecidx >= 2)
- hang();
-
- ((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_cptr |= mask;
-}
-
-static inline void fec_100Mbps(struct eth_device *dev)
-{
- struct ether_fcc_info_s *efis = dev->priv;
- int fecidx = efis->ether_index;
- uint mask = (fecidx == 0) ? 0x0000010 : 0x0000008;
-
- if ((unsigned int)fecidx >= 2)
- hang();
-
- ((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_cptr &= ~mask;
-}
-
-#endif
-
-static inline void fec_full_duplex(struct eth_device *dev)
-{
- struct ether_fcc_info_s *efis = dev->priv;
- volatile fec_t *fecp = (volatile fec_t *)(CONFIG_SYS_IMMR + efis->fecp_offset);
-
- fecp->fec_r_cntrl &= ~FEC_RCNTRL_DRT;
- fecp->fec_x_cntrl |= FEC_TCNTRL_FDEN; /* FD enable */
-}
-
-static inline void fec_half_duplex(struct eth_device *dev)
-{
- struct ether_fcc_info_s *efis = dev->priv;
- volatile fec_t *fecp = (volatile fec_t *)(CONFIG_SYS_IMMR + efis->fecp_offset);
-
- fecp->fec_r_cntrl |= FEC_RCNTRL_DRT;
- fecp->fec_x_cntrl &= ~FEC_TCNTRL_FDEN; /* FD disable */
-}
-
-static void fec_pin_init(int fecidx)
-{
- bd_t *bd = gd->bd;
- volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
- volatile fec_t *fecp;
-
- /*
- * only two FECs please
- */
- if ((unsigned int)fecidx >= 2)
- hang();
-
- if (fecidx == 0)
- fecp = &immr->im_cpm.cp_fec1;
- else
- fecp = &immr->im_cpm.cp_fec2;
-
- /*
- * Set MII speed to 2.5 MHz or slightly below.
- * * According to the MPC860T (Rev. D) Fast ethernet controller user
- * * manual (6.2.14),
- * * the MII management interface clock must be less than or equal
- * * to 2.5 MHz.
- * * This MDC frequency is equal to system clock / (2 * MII_SPEED).
- * * Then MII_SPEED = system_clock / 2 * 2,5 MHz.
- *
- * All MII configuration is done via FEC1 registers:
- */
- immr->im_cpm.cp_fec1.fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
-
-#if defined(CONFIG_NETTA) || defined(CONFIG_NETPHONE) || defined(CONFIG_NETTA2)
- /* our PHYs are the limit at 2.5 MHz */
- fecp->fec_mii_speed <<= 1;
-#endif
-
-#if defined(CONFIG_MPC885_FAMILY) && defined(WANT_MII)
- /* use MDC for MII */
- immr->im_ioport.iop_pdpar |= 0x0080;
- immr->im_ioport.iop_pddir &= ~0x0080;
-#endif
-
- if (fecidx == 0) {
-#if defined(CONFIG_ETHER_ON_FEC1)
-
-#if defined(CONFIG_MPC885_FAMILY) /* MPC87x/88x have got 2 FECs and different pinout */
-
-#if !defined(CONFIG_RMII)
-
- immr->im_ioport.iop_papar |= 0xf830;
- immr->im_ioport.iop_padir |= 0x0830;
- immr->im_ioport.iop_padir &= ~0xf000;
-
- immr->im_cpm.cp_pbpar |= 0x00001001;
- immr->im_cpm.cp_pbdir &= ~0x00001001;
-
- immr->im_ioport.iop_pcpar |= 0x000c;
- immr->im_ioport.iop_pcdir &= ~0x000c;
-
- immr->im_cpm.cp_pepar |= 0x00000003;
- immr->im_cpm.cp_pedir |= 0x00000003;
- immr->im_cpm.cp_peso &= ~0x00000003;
-
- immr->im_cpm.cp_cptr &= ~0x00000100;
-
-#else
-
-#if !defined(CONFIG_FEC1_PHY_NORXERR)
- immr->im_ioport.iop_papar |= 0x1000;
- immr->im_ioport.iop_padir &= ~0x1000;
-#endif
- immr->im_ioport.iop_papar |= 0xe810;
- immr->im_ioport.iop_padir |= 0x0810;
- immr->im_ioport.iop_padir &= ~0xe000;
-
- immr->im_cpm.cp_pbpar |= 0x00000001;
- immr->im_cpm.cp_pbdir &= ~0x00000001;
-
- immr->im_cpm.cp_cptr |= 0x00000100;
- immr->im_cpm.cp_cptr &= ~0x00000050;
-
-#endif /* !CONFIG_RMII */
-
-#elif !defined(CONFIG_ICU862) && !defined(CONFIG_IAD210)
- /*
- * Configure all of port D for MII.
- */
- immr->im_ioport.iop_pdpar = 0x1fff;
-
- /*
- * Bits moved from Rev. D onward
- */
- if ((get_immr(0) & 0xffff) < 0x0501)
- immr->im_ioport.iop_pddir = 0x1c58; /* Pre rev. D */
- else
- immr->im_ioport.iop_pddir = 0x1fff; /* Rev. D and later */
-#else
- /*
- * Configure port A for MII.
- */
-
-#if defined(CONFIG_ICU862) && defined(CONFIG_SYS_DISCOVER_PHY)
-
- /*
- * On the ICU862 board the MII-MDC pin is routed to PD8 pin
- * * of CPU, so for this board we need to configure Utopia and
- * * enable PD8 to MII-MDC function
- */
- immr->im_ioport.iop_pdpar |= 0x4080;
-#endif
-
- /*
- * Has Utopia been configured?
- */
- if (immr->im_ioport.iop_pdpar & (0x8000 >> 1)) {
- /*
- * YES - Use MUXED mode for UTOPIA bus.
- * This frees Port A for use by MII (see 862UM table 41-6).
- */
- immr->im_ioport.utmode &= ~0x80;
- } else {
- /*
- * NO - set SPLIT mode for UTOPIA bus.
- *
- * This doesn't really effect UTOPIA (which isn't
- * enabled anyway) but just tells the 862
- * to use port A for MII (see 862UM table 41-6).
- */
- immr->im_ioport.utmode |= 0x80;
- }
-#endif /* !defined(CONFIG_ICU862) */
-
-#endif /* CONFIG_ETHER_ON_FEC1 */
- } else if (fecidx == 1) {
-
-#if defined(CONFIG_ETHER_ON_FEC2)
-
-#if defined(CONFIG_MPC885_FAMILY) /* MPC87x/88x have got 2 FECs and different pinout */
-
-#if !defined(CONFIG_RMII)
- immr->im_cpm.cp_pepar |= 0x0003fffc;
- immr->im_cpm.cp_pedir |= 0x0003fffc;
- immr->im_cpm.cp_peso &= ~0x000087fc;
- immr->im_cpm.cp_peso |= 0x00037800;
-
- immr->im_cpm.cp_cptr &= ~0x00000080;
-#else
-
-#if !defined(CONFIG_FEC2_PHY_NORXERR)
- immr->im_cpm.cp_pepar |= 0x00000010;
- immr->im_cpm.cp_pedir |= 0x00000010;
- immr->im_cpm.cp_peso &= ~0x00000010;
-#endif
- immr->im_cpm.cp_pepar |= 0x00039620;
- immr->im_cpm.cp_pedir |= 0x00039620;
- immr->im_cpm.cp_peso |= 0x00031000;
- immr->im_cpm.cp_peso &= ~0x00008620;
-
- immr->im_cpm.cp_cptr |= 0x00000080;
- immr->im_cpm.cp_cptr &= ~0x00000028;
-#endif /* CONFIG_RMII */
-
-#endif /* CONFIG_MPC885_FAMILY */
-
-#endif /* CONFIG_ETHER_ON_FEC2 */
-
- }
-}
-
-static int fec_reset(volatile fec_t *fecp)
-{
- int i;
-
- /* Whack a reset.
- * A delay is required between a reset of the FEC block and
- * initialization of other FEC registers because the reset takes
- * some time to complete. If you don't delay, subsequent writes
- * to FEC registers might get killed by the reset routine which is
- * still in progress.
- */
-
- fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET;
- for (i = 0;
- (fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
- ++i) {
- udelay (1);
- }
- if (i == FEC_RESET_DELAY)
- return -1;
-
- return 0;
-}
-
-static int fec_init (struct eth_device *dev, bd_t * bd)
-{
- struct ether_fcc_info_s *efis = dev->priv;
- volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
- volatile fec_t *fecp =
- (volatile fec_t *) (CONFIG_SYS_IMMR + efis->fecp_offset);
- int i;
-
- if (efis->ether_index == 0) {
-#if defined(CONFIG_FADS) /* FADS family uses FPGA (BCSR) to control PHYs */
-#if defined(CONFIG_MPC885ADS)
- *(vu_char *) BCSR5 &= ~(BCSR5_MII1_EN | BCSR5_MII1_RST);
-#else
- /* configure FADS for fast (FEC) ethernet, half-duplex */
- /* The LXT970 needs about 50ms to recover from reset, so
- * wait for it by discovering the PHY before leaving eth_init().
- */
- {
- volatile uint *bcsr4 = (volatile uint *) BCSR4;
-
- *bcsr4 = (*bcsr4 & ~(BCSR4_FETH_EN | BCSR4_FETHCFG1))
- | (BCSR4_FETHCFG0 | BCSR4_FETHFDE |
- BCSR4_FETHRST);
-
- /* reset the LXT970 PHY */
- *bcsr4 &= ~BCSR4_FETHRST;
- udelay (10);
- *bcsr4 |= BCSR4_FETHRST;
- udelay (10);
- }
-#endif /* CONFIG_MPC885ADS */
-#endif /* CONFIG_FADS */
- }
-
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
- /* the MII interface is connected to FEC1
- * so for the miiphy_xxx function to work we must
- * call mii_init since fec_halt messes the thing up
- */
- if (efis->ether_index != 0)
- __mii_init();
-#endif
-
- if (fec_reset(fecp) < 0)
- printf ("FEC_RESET_DELAY timeout\n");
-
- /* We use strictly polling mode only
- */
- fecp->fec_imask = 0;
-
- /* Clear any pending interrupt
- */
- fecp->fec_ievent = 0xffc0;
-
- /* No need to set the IVEC register */
-
- /* Set station address
- */
-#define ea dev->enetaddr
- fecp->fec_addr_low = (ea[0] << 24) | (ea[1] << 16) | (ea[2] << 8) | (ea[3]);
- fecp->fec_addr_high = (ea[4] << 8) | (ea[5]);
-#undef ea
-
-#if defined(CONFIG_CMD_CDP)
- /*
- * Turn on multicast address hash table
- */
- fecp->fec_hash_table_high = 0xffffffff;
- fecp->fec_hash_table_low = 0xffffffff;
-#else
- /* Clear multicast address hash table
- */
- fecp->fec_hash_table_high = 0;
- fecp->fec_hash_table_low = 0;
-#endif
-
- /* Set maximum receive buffer size.
- */
- fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
-
- /* Set maximum frame length
- */
- fecp->fec_r_hash = PKT_MAXBUF_SIZE;
-
- /*
- * Setup Buffers and Buffer Desriptors
- */
- rxIdx = 0;
- txIdx = 0;
-
- if (!rtx) {
-#ifdef CONFIG_SYS_ALLOC_DPRAM
- rtx = (RTXBD *) (immr->im_cpm.cp_dpmem +
- dpram_alloc_align (sizeof (RTXBD), 8));
-#else
- rtx = (RTXBD *) (immr->im_cpm.cp_dpmem + CPM_FEC_BASE);
-#endif
- }
- /*
- * Setup Receiver Buffer Descriptors (13.14.24.18)
- * Settings:
- * Empty, Wrap
- */
- for (i = 0; i < PKTBUFSRX; i++) {
- rtx->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
- rtx->rxbd[i].cbd_datlen = 0; /* Reset */
- rtx->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i];
- }
- rtx->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
-
- /*
- * Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19)
- * Settings:
- * Last, Tx CRC
- */
- for (i = 0; i < TX_BUF_CNT; i++) {
- rtx->txbd[i].cbd_sc = BD_ENET_TX_LAST | BD_ENET_TX_TC;
- rtx->txbd[i].cbd_datlen = 0; /* Reset */
- rtx->txbd[i].cbd_bufaddr = (uint) (&txbuf[0]);
- }
- rtx->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
-
- /* Set receive and transmit descriptor base
- */
- fecp->fec_r_des_start = (unsigned int) (&rtx->rxbd[0]);
- fecp->fec_x_des_start = (unsigned int) (&rtx->txbd[0]);
-
- /* Enable MII mode
- */
-#if 0 /* Full duplex mode */
- fecp->fec_r_cntrl = FEC_RCNTRL_MII_MODE;
- fecp->fec_x_cntrl = FEC_TCNTRL_FDEN;
-#else /* Half duplex mode */
- fecp->fec_r_cntrl = FEC_RCNTRL_MII_MODE | FEC_RCNTRL_DRT;
- fecp->fec_x_cntrl = 0;
-#endif
-
- /* Enable big endian and don't care about SDMA FC.
- */
- fecp->fec_fun_code = 0x78000000;
-
- /*
- * Setup the pin configuration of the FEC
- */
- fec_pin_init (efis->ether_index);
-
- rxIdx = 0;
- txIdx = 0;
-
- /*
- * Now enable the transmit and receive processing
- */
- fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
-
- if (efis->phy_addr == -1) {
-#ifdef CONFIG_SYS_DISCOVER_PHY
- /*
- * wait for the PHY to wake up after reset
- */
- efis->actual_phy_addr = mii_discover_phy (dev);
-
- if (efis->actual_phy_addr == -1) {
- printf ("Unable to discover phy!\n");
- return -1;
- }
-#else
- efis->actual_phy_addr = -1;
-#endif
- } else {
- efis->actual_phy_addr = efis->phy_addr;
- }
-
-#if defined(CONFIG_MII) && defined(CONFIG_RMII)
- /*
- * adapt the RMII speed to the speed of the phy
- */
- if (miiphy_speed (dev->name, efis->actual_phy_addr) == _100BASET) {
- fec_100Mbps (dev);
- } else {
- fec_10Mbps (dev);
- }
-#endif
-
-#if defined(CONFIG_MII)
- /*
- * adapt to the half/full speed settings
- */
- if (miiphy_duplex (dev->name, efis->actual_phy_addr) == FULL) {
- fec_full_duplex (dev);
- } else {
- fec_half_duplex (dev);
- }
-#endif
-
- /* And last, try to fill Rx Buffer Descriptors */
- fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
-
- efis->initialized = 1;
-
- return 0;
-}
-
-
-static void fec_halt(struct eth_device* dev)
-{
- struct ether_fcc_info_s *efis = dev->priv;
- volatile fec_t *fecp = (volatile fec_t *)(CONFIG_SYS_IMMR + efis->fecp_offset);
- int i;
-
- /* avoid halt if initialized; mii gets stuck otherwise */
- if (!efis->initialized)
- return;
-
- /* Whack a reset.
- * A delay is required between a reset of the FEC block and
- * initialization of other FEC registers because the reset takes
- * some time to complete. If you don't delay, subsequent writes
- * to FEC registers might get killed by the reset routine which is
- * still in progress.
- */
-
- fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET;
- for (i = 0;
- (fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
- ++i) {
- udelay (1);
- }
- if (i == FEC_RESET_DELAY) {
- printf ("FEC_RESET_DELAY timeout\n");
- return;
- }
-
- efis->initialized = 0;
-}
-
-#if defined(CONFIG_SYS_DISCOVER_PHY) || defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-
-/* Make MII read/write commands for the FEC.
-*/
-
-#define mk_mii_read(ADDR, REG) (0x60020000 | ((ADDR << 23) | \
- (REG & 0x1f) << 18))
-
-#define mk_mii_write(ADDR, REG, VAL) (0x50020000 | ((ADDR << 23) | \
- (REG & 0x1f) << 18) | \
- (VAL & 0xffff))
-
-/* Interrupt events/masks.
-*/
-#define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */
-#define FEC_ENET_BABR ((uint)0x40000000) /* Babbling receiver */
-#define FEC_ENET_BABT ((uint)0x20000000) /* Babbling transmitter */
-#define FEC_ENET_GRA ((uint)0x10000000) /* Graceful stop complete */
-#define FEC_ENET_TXF ((uint)0x08000000) /* Full frame transmitted */
-#define FEC_ENET_TXB ((uint)0x04000000) /* A buffer was transmitted */
-#define FEC_ENET_RXF ((uint)0x02000000) /* Full frame received */
-#define FEC_ENET_RXB ((uint)0x01000000) /* A buffer was received */
-#define FEC_ENET_MII ((uint)0x00800000) /* MII interrupt */
-#define FEC_ENET_EBERR ((uint)0x00400000) /* SDMA bus error */
-
-/* PHY identification
- */
-#define PHY_ID_LXT970 0x78100000 /* LXT970 */
-#define PHY_ID_LXT971 0x001378e0 /* LXT971 and 972 */
-#define PHY_ID_82555 0x02a80150 /* Intel 82555 */
-#define PHY_ID_QS6612 0x01814400 /* QS6612 */
-#define PHY_ID_AMD79C784 0x00225610 /* AMD 79C784 */
-#define PHY_ID_LSI80225 0x0016f870 /* LSI 80225 */
-#define PHY_ID_LSI80225B 0x0016f880 /* LSI 80225/B */
-#define PHY_ID_DM9161 0x0181B880 /* Davicom DM9161 */
-#define PHY_ID_KSM8995M 0x00221450 /* MICREL KS8995MA */
-
-/* send command to phy using mii, wait for result */
-static uint
-mii_send(uint mii_cmd)
-{
- uint mii_reply;
- volatile fec_t *ep;
- int cnt;
-
- ep = &(((immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_fec);
-
- ep->fec_mii_data = mii_cmd; /* command to phy */
-
- /* wait for mii complete */
- cnt = 0;
- while (!(ep->fec_ievent & FEC_ENET_MII)) {
- if (++cnt > 1000) {
- printf("mii_send STUCK!\n");
- break;
- }
- }
- mii_reply = ep->fec_mii_data; /* result from phy */
- ep->fec_ievent = FEC_ENET_MII; /* clear MII complete */
-#if 0
- printf("%s[%d] %s: sent=0x%8.8x, reply=0x%8.8x\n",
- __FILE__,__LINE__,__FUNCTION__,mii_cmd,mii_reply);
-#endif
- return (mii_reply & 0xffff); /* data read from phy */
-}
-#endif
-
-#if defined(CONFIG_SYS_DISCOVER_PHY)
-static int mii_discover_phy(struct eth_device *dev)
-{
-#define MAX_PHY_PASSES 11
- uint phyno;
- int pass;
- uint phytype;
- int phyaddr;
-
- phyaddr = -1; /* didn't find a PHY yet */
- for (pass = 1; pass <= MAX_PHY_PASSES && phyaddr < 0; ++pass) {
- if (pass > 1) {
- /* PHY may need more time to recover from reset.
- * The LXT970 needs 50ms typical, no maximum is
- * specified, so wait 10ms before try again.
- * With 11 passes this gives it 100ms to wake up.
- */
- udelay(10000); /* wait 10ms */
- }
- for (phyno = 0; phyno < 32 && phyaddr < 0; ++phyno) {
- phytype = mii_send(mk_mii_read(phyno, PHY_PHYIDR2));
-#ifdef ET_DEBUG
- printf("PHY type 0x%x pass %d type ", phytype, pass);
-#endif
- if (phytype != 0xffff) {
- phyaddr = phyno;
- phytype |= mii_send(mk_mii_read(phyno,
- PHY_PHYIDR1)) << 16;
-
-#ifdef ET_DEBUG
- printf("PHY @ 0x%x pass %d type ",phyno,pass);
- switch (phytype & 0xfffffff0) {
- case PHY_ID_LXT970:
- printf("LXT970\n");
- break;
- case PHY_ID_LXT971:
- printf("LXT971\n");
- break;
- case PHY_ID_82555:
- printf("82555\n");
- break;
- case PHY_ID_QS6612:
- printf("QS6612\n");
- break;
- case PHY_ID_AMD79C784:
- printf("AMD79C784\n");
- break;
- case PHY_ID_LSI80225B:
- printf("LSI L80225/B\n");
- break;
- case PHY_ID_DM9161:
- printf("Davicom DM9161\n");
- break;
- case PHY_ID_KSM8995M:
- printf("MICREL KS8995M\n");
- break;
- default:
- printf("0x%08x\n", phytype);
- break;
- }
-#endif
- }
- }
- }
- if (phyaddr < 0) {
- printf("No PHY device found.\n");
- }
- return phyaddr;
-}
-#endif /* CONFIG_SYS_DISCOVER_PHY */
-
-#if (defined(CONFIG_MII) || defined(CONFIG_CMD_MII)) && !defined(CONFIG_BITBANGMII)
-
-/****************************************************************************
- * mii_init -- Initialize the MII via FEC 1 for MII command without ethernet
- * This function is a subset of eth_init
- ****************************************************************************
- */
-static void __mii_init(void)
-{
- volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
- volatile fec_t *fecp = &(immr->im_cpm.cp_fec);
-
- if (fec_reset(fecp) < 0)
- printf ("FEC_RESET_DELAY timeout\n");
-
- /* We use strictly polling mode only
- */
- fecp->fec_imask = 0;
-
- /* Clear any pending interrupt
- */
- fecp->fec_ievent = 0xffc0;
-
- /* Now enable the transmit and receive processing
- */
- fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
-}
-
-void mii_init (void)
-{
- int i;
-
- __mii_init();
-
- /* Setup the pin configuration of the FEC(s)
- */
- for (i = 0; i < sizeof(ether_fcc_info) / sizeof(ether_fcc_info[0]); i++)
- fec_pin_init(ether_fcc_info[i].ether_index);
-}
-
-/*****************************************************************************
- * Read and write a MII PHY register, routines used by MII Utilities
- *
- * FIXME: These routines are expected to return 0 on success, but mii_send
- * does _not_ return an error code. Maybe 0xFFFF means error, i.e.
- * no PHY connected...
- * For now always return 0.
- * FIXME: These routines only work after calling eth_init() at least once!
- * Otherwise they hang in mii_send() !!! Sorry!
- *****************************************************************************/
-
-int fec8xx_miiphy_read(char *devname, unsigned char addr,
- unsigned char reg, unsigned short *value)
-{
- short rdreg; /* register working value */
-
-#ifdef MII_DEBUG
- printf ("miiphy_read(0x%x) @ 0x%x = ", reg, addr);
-#endif
- rdreg = mii_send(mk_mii_read(addr, reg));
-
- *value = rdreg;
-#ifdef MII_DEBUG
- printf ("0x%04x\n", *value);
-#endif
- return 0;
-}
-
-int fec8xx_miiphy_write(char *devname, unsigned char addr,
- unsigned char reg, unsigned short value)
-{
- short rdreg; /* register working value */
-#ifdef MII_DEBUG
- printf ("miiphy_write(0x%x) @ 0x%x = ", reg, addr);
-#endif
- rdreg = mii_send(mk_mii_write(addr, reg, value));
-
-#ifdef MII_DEBUG
- printf ("0x%04x\n", value);
-#endif
- return 0;
-}
-#endif
-
-#endif
projects / karo-tx-uboot.git / blobdiff