2 * Copyright (C) 2015 Microchip Technology
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
17 #include <linux/version.h>
18 #include <linux/module.h>
19 #include <linux/netdevice.h>
20 #include <linux/etherdevice.h>
21 #include <linux/ethtool.h>
22 #include <linux/usb.h>
23 #include <linux/crc32.h>
24 #include <linux/signal.h>
25 #include <linux/slab.h>
26 #include <linux/if_vlan.h>
27 #include <linux/uaccess.h>
28 #include <linux/list.h>
30 #include <linux/ipv6.h>
31 #include <linux/mdio.h>
32 #include <net/ip6_checksum.h>
33 #include <linux/microchipphy.h>
36 #define DRIVER_AUTHOR "WOOJUNG HUH <woojung.huh@microchip.com>"
37 #define DRIVER_DESC "LAN78XX USB 3.0 Gigabit Ethernet Devices"
38 #define DRIVER_NAME "lan78xx"
39 #define DRIVER_VERSION "1.0.1"
41 #define TX_TIMEOUT_JIFFIES (5 * HZ)
42 #define THROTTLE_JIFFIES (HZ / 8)
43 #define UNLINK_TIMEOUT_MS 3
45 #define RX_MAX_QUEUE_MEMORY (60 * 1518)
47 #define SS_USB_PKT_SIZE (1024)
48 #define HS_USB_PKT_SIZE (512)
49 #define FS_USB_PKT_SIZE (64)
51 #define MAX_RX_FIFO_SIZE (12 * 1024)
52 #define MAX_TX_FIFO_SIZE (12 * 1024)
53 #define DEFAULT_BURST_CAP_SIZE (MAX_TX_FIFO_SIZE)
54 #define DEFAULT_BULK_IN_DELAY (0x0800)
55 #define MAX_SINGLE_PACKET_SIZE (9000)
56 #define DEFAULT_TX_CSUM_ENABLE (true)
57 #define DEFAULT_RX_CSUM_ENABLE (true)
58 #define DEFAULT_TSO_CSUM_ENABLE (true)
59 #define DEFAULT_VLAN_FILTER_ENABLE (true)
60 #define TX_OVERHEAD (8)
63 #define LAN78XX_USB_VENDOR_ID (0x0424)
64 #define LAN7800_USB_PRODUCT_ID (0x7800)
65 #define LAN7850_USB_PRODUCT_ID (0x7850)
66 #define LAN78XX_EEPROM_MAGIC (0x78A5)
67 #define LAN78XX_OTP_MAGIC (0x78F3)
72 #define EEPROM_INDICATOR (0xA5)
73 #define EEPROM_MAC_OFFSET (0x01)
74 #define MAX_EEPROM_SIZE 512
75 #define OTP_INDICATOR_1 (0xF3)
76 #define OTP_INDICATOR_2 (0xF7)
78 #define WAKE_ALL (WAKE_PHY | WAKE_UCAST | \
79 WAKE_MCAST | WAKE_BCAST | \
80 WAKE_ARP | WAKE_MAGIC)
82 /* USB related defines */
83 #define BULK_IN_PIPE 1
84 #define BULK_OUT_PIPE 2
86 /* default autosuspend delay (mSec)*/
87 #define DEFAULT_AUTOSUSPEND_DELAY (10 * 1000)
89 static const char lan78xx_gstrings[][ETH_GSTRING_LEN] = {
91 "RX Alignment Errors",
94 "RX Undersize Frame Errors",
95 "RX Oversize Frame Errors",
97 "RX Unicast Byte Count",
98 "RX Broadcast Byte Count",
99 "RX Multicast Byte Count",
101 "RX Broadcast Frames",
102 "RX Multicast Frames",
105 "RX 65 - 127 Byte Frames",
106 "RX 128 - 255 Byte Frames",
107 "RX 256 - 511 Bytes Frames",
108 "RX 512 - 1023 Byte Frames",
109 "RX 1024 - 1518 Byte Frames",
110 "RX Greater 1518 Byte Frames",
111 "EEE RX LPI Transitions",
114 "TX Excess Deferral Errors",
117 "TX Single Collisions",
118 "TX Multiple Collisions",
119 "TX Excessive Collision",
120 "TX Late Collisions",
121 "TX Unicast Byte Count",
122 "TX Broadcast Byte Count",
123 "TX Multicast Byte Count",
125 "TX Broadcast Frames",
126 "TX Multicast Frames",
129 "TX 65 - 127 Byte Frames",
130 "TX 128 - 255 Byte Frames",
131 "TX 256 - 511 Bytes Frames",
132 "TX 512 - 1023 Byte Frames",
133 "TX 1024 - 1518 Byte Frames",
134 "TX Greater 1518 Byte Frames",
135 "EEE TX LPI Transitions",
139 struct lan78xx_statstage {
141 u32 rx_alignment_errors;
142 u32 rx_fragment_errors;
143 u32 rx_jabber_errors;
144 u32 rx_undersize_frame_errors;
145 u32 rx_oversize_frame_errors;
146 u32 rx_dropped_frames;
147 u32 rx_unicast_byte_count;
148 u32 rx_broadcast_byte_count;
149 u32 rx_multicast_byte_count;
150 u32 rx_unicast_frames;
151 u32 rx_broadcast_frames;
152 u32 rx_multicast_frames;
154 u32 rx_64_byte_frames;
155 u32 rx_65_127_byte_frames;
156 u32 rx_128_255_byte_frames;
157 u32 rx_256_511_bytes_frames;
158 u32 rx_512_1023_byte_frames;
159 u32 rx_1024_1518_byte_frames;
160 u32 rx_greater_1518_byte_frames;
161 u32 eee_rx_lpi_transitions;
164 u32 tx_excess_deferral_errors;
165 u32 tx_carrier_errors;
166 u32 tx_bad_byte_count;
167 u32 tx_single_collisions;
168 u32 tx_multiple_collisions;
169 u32 tx_excessive_collision;
170 u32 tx_late_collisions;
171 u32 tx_unicast_byte_count;
172 u32 tx_broadcast_byte_count;
173 u32 tx_multicast_byte_count;
174 u32 tx_unicast_frames;
175 u32 tx_broadcast_frames;
176 u32 tx_multicast_frames;
178 u32 tx_64_byte_frames;
179 u32 tx_65_127_byte_frames;
180 u32 tx_128_255_byte_frames;
181 u32 tx_256_511_bytes_frames;
182 u32 tx_512_1023_byte_frames;
183 u32 tx_1024_1518_byte_frames;
184 u32 tx_greater_1518_byte_frames;
185 u32 eee_tx_lpi_transitions;
191 struct lan78xx_priv {
192 struct lan78xx_net *dev;
194 u32 mchash_table[DP_SEL_VHF_HASH_LEN]; /* multicat hash table */
195 u32 pfilter_table[NUM_OF_MAF][2]; /* perfect filter table */
196 u32 vlan_table[DP_SEL_VHF_VLAN_LEN];
197 struct mutex dataport_mutex; /* for dataport access */
198 spinlock_t rfe_ctl_lock; /* for rfe register access */
199 struct work_struct set_multicast;
200 struct work_struct set_vlan;
214 struct skb_data { /* skb->cb is one of these */
216 struct lan78xx_net *dev;
217 enum skb_state state;
222 struct usb_ctrlrequest req;
223 struct lan78xx_net *dev;
226 #define EVENT_TX_HALT 0
227 #define EVENT_RX_HALT 1
228 #define EVENT_RX_MEMORY 2
229 #define EVENT_STS_SPLIT 3
230 #define EVENT_LINK_RESET 4
231 #define EVENT_RX_PAUSED 5
232 #define EVENT_DEV_WAKING 6
233 #define EVENT_DEV_ASLEEP 7
234 #define EVENT_DEV_OPEN 8
237 struct net_device *net;
238 struct usb_device *udev;
239 struct usb_interface *intf;
244 struct sk_buff_head rxq;
245 struct sk_buff_head txq;
246 struct sk_buff_head done;
247 struct sk_buff_head rxq_pause;
248 struct sk_buff_head txq_pend;
250 struct tasklet_struct bh;
251 struct delayed_work wq;
253 struct usb_host_endpoint *ep_blkin;
254 struct usb_host_endpoint *ep_blkout;
255 struct usb_host_endpoint *ep_intr;
259 struct urb *urb_intr;
260 struct usb_anchor deferred;
262 struct mutex phy_mutex; /* for phy access */
263 unsigned pipe_in, pipe_out, pipe_intr;
265 u32 hard_mtu; /* count any extra framing */
266 size_t rx_urb_size; /* size for rx urbs */
270 wait_queue_head_t *wait;
271 unsigned char suspend_count;
274 struct timer_list delay;
276 unsigned long data[5];
282 struct mii_bus *mdiobus;
285 /* use ethtool to change the level for any given device */
286 static int msg_level = -1;
287 module_param(msg_level, int, 0);
288 MODULE_PARM_DESC(msg_level, "Override default message level");
290 static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data)
292 u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL);
298 ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
299 USB_VENDOR_REQUEST_READ_REGISTER,
300 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
301 0, index, buf, 4, USB_CTRL_GET_TIMEOUT);
302 if (likely(ret >= 0)) {
306 netdev_warn(dev->net,
307 "Failed to read register index 0x%08x. ret = %d",
316 static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data)
318 u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL);
327 ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
328 USB_VENDOR_REQUEST_WRITE_REGISTER,
329 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
330 0, index, buf, 4, USB_CTRL_SET_TIMEOUT);
331 if (unlikely(ret < 0)) {
332 netdev_warn(dev->net,
333 "Failed to write register index 0x%08x. ret = %d",
342 static int lan78xx_read_stats(struct lan78xx_net *dev,
343 struct lan78xx_statstage *data)
347 struct lan78xx_statstage *stats;
351 stats = kmalloc(sizeof(*stats), GFP_KERNEL);
355 ret = usb_control_msg(dev->udev,
356 usb_rcvctrlpipe(dev->udev, 0),
357 USB_VENDOR_REQUEST_GET_STATS,
358 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
363 USB_CTRL_SET_TIMEOUT);
364 if (likely(ret >= 0)) {
367 for (i = 0; i < sizeof(*stats)/sizeof(u32); i++) {
368 le32_to_cpus(&src[i]);
372 netdev_warn(dev->net,
373 "Failed to read stat ret = 0x%x", ret);
381 /* Loop until the read is completed with timeout called with phy_mutex held */
382 static int lan78xx_phy_wait_not_busy(struct lan78xx_net *dev)
384 unsigned long start_time = jiffies;
389 ret = lan78xx_read_reg(dev, MII_ACC, &val);
390 if (unlikely(ret < 0))
393 if (!(val & MII_ACC_MII_BUSY_))
395 } while (!time_after(jiffies, start_time + HZ));
400 static inline u32 mii_access(int id, int index, int read)
404 ret = ((u32)id << MII_ACC_PHY_ADDR_SHIFT_) & MII_ACC_PHY_ADDR_MASK_;
405 ret |= ((u32)index << MII_ACC_MIIRINDA_SHIFT_) & MII_ACC_MIIRINDA_MASK_;
407 ret |= MII_ACC_MII_READ_;
409 ret |= MII_ACC_MII_WRITE_;
410 ret |= MII_ACC_MII_BUSY_;
415 static int lan78xx_wait_eeprom(struct lan78xx_net *dev)
417 unsigned long start_time = jiffies;
422 ret = lan78xx_read_reg(dev, E2P_CMD, &val);
423 if (unlikely(ret < 0))
426 if (!(val & E2P_CMD_EPC_BUSY_) ||
427 (val & E2P_CMD_EPC_TIMEOUT_))
429 usleep_range(40, 100);
430 } while (!time_after(jiffies, start_time + HZ));
432 if (val & (E2P_CMD_EPC_TIMEOUT_ | E2P_CMD_EPC_BUSY_)) {
433 netdev_warn(dev->net, "EEPROM read operation timeout");
440 static int lan78xx_eeprom_confirm_not_busy(struct lan78xx_net *dev)
442 unsigned long start_time = jiffies;
447 ret = lan78xx_read_reg(dev, E2P_CMD, &val);
448 if (unlikely(ret < 0))
451 if (!(val & E2P_CMD_EPC_BUSY_))
454 usleep_range(40, 100);
455 } while (!time_after(jiffies, start_time + HZ));
457 netdev_warn(dev->net, "EEPROM is busy");
461 static int lan78xx_read_raw_eeprom(struct lan78xx_net *dev, u32 offset,
462 u32 length, u8 *data)
467 ret = lan78xx_eeprom_confirm_not_busy(dev);
471 for (i = 0; i < length; i++) {
472 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_READ_;
473 val |= (offset & E2P_CMD_EPC_ADDR_MASK_);
474 ret = lan78xx_write_reg(dev, E2P_CMD, val);
475 if (unlikely(ret < 0))
478 ret = lan78xx_wait_eeprom(dev);
482 ret = lan78xx_read_reg(dev, E2P_DATA, &val);
483 if (unlikely(ret < 0))
486 data[i] = val & 0xFF;
493 static int lan78xx_read_eeprom(struct lan78xx_net *dev, u32 offset,
494 u32 length, u8 *data)
499 ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig);
500 if ((ret == 0) && (sig == EEPROM_INDICATOR))
501 ret = lan78xx_read_raw_eeprom(dev, offset, length, data);
508 static int lan78xx_write_raw_eeprom(struct lan78xx_net *dev, u32 offset,
509 u32 length, u8 *data)
514 ret = lan78xx_eeprom_confirm_not_busy(dev);
518 /* Issue write/erase enable command */
519 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_EWEN_;
520 ret = lan78xx_write_reg(dev, E2P_CMD, val);
521 if (unlikely(ret < 0))
524 ret = lan78xx_wait_eeprom(dev);
528 for (i = 0; i < length; i++) {
529 /* Fill data register */
531 ret = lan78xx_write_reg(dev, E2P_DATA, val);
535 /* Send "write" command */
536 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_;
537 val |= (offset & E2P_CMD_EPC_ADDR_MASK_);
538 ret = lan78xx_write_reg(dev, E2P_CMD, val);
542 ret = lan78xx_wait_eeprom(dev);
552 static int lan78xx_read_raw_otp(struct lan78xx_net *dev, u32 offset,
553 u32 length, u8 *data)
558 unsigned long timeout;
560 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
562 if (buf & OTP_PWR_DN_PWRDN_N_) {
563 /* clear it and wait to be cleared */
564 ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0);
566 timeout = jiffies + HZ;
569 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
570 if (time_after(jiffies, timeout)) {
571 netdev_warn(dev->net,
572 "timeout on OTP_PWR_DN");
575 } while (buf & OTP_PWR_DN_PWRDN_N_);
578 for (i = 0; i < length; i++) {
579 ret = lan78xx_write_reg(dev, OTP_ADDR1,
580 ((offset + i) >> 8) & OTP_ADDR1_15_11);
581 ret = lan78xx_write_reg(dev, OTP_ADDR2,
582 ((offset + i) & OTP_ADDR2_10_3));
584 ret = lan78xx_write_reg(dev, OTP_FUNC_CMD, OTP_FUNC_CMD_READ_);
585 ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_);
587 timeout = jiffies + HZ;
590 ret = lan78xx_read_reg(dev, OTP_STATUS, &buf);
591 if (time_after(jiffies, timeout)) {
592 netdev_warn(dev->net,
593 "timeout on OTP_STATUS");
596 } while (buf & OTP_STATUS_BUSY_);
598 ret = lan78xx_read_reg(dev, OTP_RD_DATA, &buf);
600 data[i] = (u8)(buf & 0xFF);
606 static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset,
607 u32 length, u8 *data)
612 ret = lan78xx_read_raw_otp(dev, 0, 1, &sig);
615 if (sig == OTP_INDICATOR_1)
617 else if (sig == OTP_INDICATOR_2)
621 ret = lan78xx_read_raw_otp(dev, offset, length, data);
627 static int lan78xx_dataport_wait_not_busy(struct lan78xx_net *dev)
631 for (i = 0; i < 100; i++) {
634 ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel);
635 if (unlikely(ret < 0))
638 if (dp_sel & DP_SEL_DPRDY_)
641 usleep_range(40, 100);
644 netdev_warn(dev->net, "lan78xx_dataport_wait_not_busy timed out");
649 static int lan78xx_dataport_write(struct lan78xx_net *dev, u32 ram_select,
650 u32 addr, u32 length, u32 *buf)
652 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
656 if (usb_autopm_get_interface(dev->intf) < 0)
659 mutex_lock(&pdata->dataport_mutex);
661 ret = lan78xx_dataport_wait_not_busy(dev);
665 ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel);
667 dp_sel &= ~DP_SEL_RSEL_MASK_;
668 dp_sel |= ram_select;
669 ret = lan78xx_write_reg(dev, DP_SEL, dp_sel);
671 for (i = 0; i < length; i++) {
672 ret = lan78xx_write_reg(dev, DP_ADDR, addr + i);
674 ret = lan78xx_write_reg(dev, DP_DATA, buf[i]);
676 ret = lan78xx_write_reg(dev, DP_CMD, DP_CMD_WRITE_);
678 ret = lan78xx_dataport_wait_not_busy(dev);
684 mutex_unlock(&pdata->dataport_mutex);
685 usb_autopm_put_interface(dev->intf);
690 static void lan78xx_set_addr_filter(struct lan78xx_priv *pdata,
691 int index, u8 addr[ETH_ALEN])
695 if ((pdata) && (index > 0) && (index < NUM_OF_MAF)) {
697 temp = addr[2] | (temp << 8);
698 temp = addr[1] | (temp << 8);
699 temp = addr[0] | (temp << 8);
700 pdata->pfilter_table[index][1] = temp;
702 temp = addr[4] | (temp << 8);
703 temp |= MAF_HI_VALID_ | MAF_HI_TYPE_DST_;
704 pdata->pfilter_table[index][0] = temp;
708 /* returns hash bit number for given MAC address */
709 static inline u32 lan78xx_hash(char addr[ETH_ALEN])
711 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff;
714 static void lan78xx_deferred_multicast_write(struct work_struct *param)
716 struct lan78xx_priv *pdata =
717 container_of(param, struct lan78xx_priv, set_multicast);
718 struct lan78xx_net *dev = pdata->dev;
722 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n",
725 lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, DP_SEL_VHF_VLAN_LEN,
726 DP_SEL_VHF_HASH_LEN, pdata->mchash_table);
728 for (i = 1; i < NUM_OF_MAF; i++) {
729 ret = lan78xx_write_reg(dev, MAF_HI(i), 0);
730 ret = lan78xx_write_reg(dev, MAF_LO(i),
731 pdata->pfilter_table[i][1]);
732 ret = lan78xx_write_reg(dev, MAF_HI(i),
733 pdata->pfilter_table[i][0]);
736 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
739 static void lan78xx_set_multicast(struct net_device *netdev)
741 struct lan78xx_net *dev = netdev_priv(netdev);
742 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
746 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
748 pdata->rfe_ctl &= ~(RFE_CTL_UCAST_EN_ | RFE_CTL_MCAST_EN_ |
749 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_);
751 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++)
752 pdata->mchash_table[i] = 0;
753 /* pfilter_table[0] has own HW address */
754 for (i = 1; i < NUM_OF_MAF; i++) {
755 pdata->pfilter_table[i][0] =
756 pdata->pfilter_table[i][1] = 0;
759 pdata->rfe_ctl |= RFE_CTL_BCAST_EN_;
761 if (dev->net->flags & IFF_PROMISC) {
762 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled");
763 pdata->rfe_ctl |= RFE_CTL_MCAST_EN_ | RFE_CTL_UCAST_EN_;
765 if (dev->net->flags & IFF_ALLMULTI) {
766 netif_dbg(dev, drv, dev->net,
767 "receive all multicast enabled");
768 pdata->rfe_ctl |= RFE_CTL_MCAST_EN_;
772 if (netdev_mc_count(dev->net)) {
773 struct netdev_hw_addr *ha;
776 netif_dbg(dev, drv, dev->net, "receive multicast hash filter");
778 pdata->rfe_ctl |= RFE_CTL_DA_PERFECT_;
781 netdev_for_each_mc_addr(ha, netdev) {
782 /* set first 32 into Perfect Filter */
784 lan78xx_set_addr_filter(pdata, i, ha->addr);
786 u32 bitnum = lan78xx_hash(ha->addr);
788 pdata->mchash_table[bitnum / 32] |=
789 (1 << (bitnum % 32));
790 pdata->rfe_ctl |= RFE_CTL_MCAST_HASH_;
796 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
798 /* defer register writes to a sleepable context */
799 schedule_work(&pdata->set_multicast);
802 static int lan78xx_update_flowcontrol(struct lan78xx_net *dev, u8 duplex,
803 u16 lcladv, u16 rmtadv)
805 u32 flow = 0, fct_flow = 0;
808 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
810 if (cap & FLOW_CTRL_TX)
811 flow = (FLOW_CR_TX_FCEN_ | 0xFFFF);
813 if (cap & FLOW_CTRL_RX)
814 flow |= FLOW_CR_RX_FCEN_;
816 if (dev->udev->speed == USB_SPEED_SUPER)
818 else if (dev->udev->speed == USB_SPEED_HIGH)
821 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s",
822 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
823 (cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
825 ret = lan78xx_write_reg(dev, FCT_FLOW, fct_flow);
827 /* threshold value should be set before enabling flow */
828 ret = lan78xx_write_reg(dev, FLOW, flow);
833 static int lan78xx_link_reset(struct lan78xx_net *dev)
835 struct phy_device *phydev = dev->net->phydev;
836 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
840 /* clear PHY interrupt status */
841 ret = phy_read(phydev, LAN88XX_INT_STS);
842 if (unlikely(ret < 0))
845 /* clear LAN78xx interrupt status */
846 ret = lan78xx_write_reg(dev, INT_STS, INT_STS_PHY_INT_);
847 if (unlikely(ret < 0))
850 phy_read_status(phydev);
852 if (!phydev->link && dev->link_on) {
853 dev->link_on = false;
854 netif_carrier_off(dev->net);
857 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
858 if (unlikely(ret < 0))
861 ret = lan78xx_write_reg(dev, MAC_CR, buf);
862 if (unlikely(ret < 0))
864 } else if (phydev->link && !dev->link_on) {
867 phy_ethtool_gset(phydev, &ecmd);
869 ret = phy_read(phydev, LAN88XX_INT_STS);
871 if (dev->udev->speed == USB_SPEED_SUPER) {
872 if (ethtool_cmd_speed(&ecmd) == 1000) {
874 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
875 buf &= ~USB_CFG1_DEV_U2_INIT_EN_;
876 ret = lan78xx_write_reg(dev, USB_CFG1, buf);
878 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
879 buf |= USB_CFG1_DEV_U1_INIT_EN_;
880 ret = lan78xx_write_reg(dev, USB_CFG1, buf);
883 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
884 buf |= USB_CFG1_DEV_U2_INIT_EN_;
885 buf |= USB_CFG1_DEV_U1_INIT_EN_;
886 ret = lan78xx_write_reg(dev, USB_CFG1, buf);
890 ladv = phy_read(phydev, MII_ADVERTISE);
894 radv = phy_read(phydev, MII_LPA);
898 netif_dbg(dev, link, dev->net,
899 "speed: %u duplex: %d anadv: 0x%04x anlpa: 0x%04x",
900 ethtool_cmd_speed(&ecmd), ecmd.duplex, ladv, radv);
902 ret = lan78xx_update_flowcontrol(dev, ecmd.duplex, ladv, radv);
903 netif_carrier_on(dev->net);
909 /* some work can't be done in tasklets, so we use keventd
911 * NOTE: annoying asymmetry: if it's active, schedule_work() fails,
912 * but tasklet_schedule() doesn't. hope the failure is rare.
914 void lan78xx_defer_kevent(struct lan78xx_net *dev, int work)
916 set_bit(work, &dev->flags);
917 if (!schedule_delayed_work(&dev->wq, 0))
918 netdev_err(dev->net, "kevent %d may have been dropped\n", work);
921 static void lan78xx_status(struct lan78xx_net *dev, struct urb *urb)
925 if (urb->actual_length != 4) {
926 netdev_warn(dev->net,
927 "unexpected urb length %d", urb->actual_length);
931 memcpy(&intdata, urb->transfer_buffer, 4);
932 le32_to_cpus(&intdata);
934 if (intdata & INT_ENP_PHY_INT) {
935 netif_dbg(dev, link, dev->net, "PHY INTR: 0x%08x\n", intdata);
936 lan78xx_defer_kevent(dev, EVENT_LINK_RESET);
938 netdev_warn(dev->net,
939 "unexpected interrupt: 0x%08x\n", intdata);
942 static int lan78xx_ethtool_get_eeprom_len(struct net_device *netdev)
944 return MAX_EEPROM_SIZE;
947 static int lan78xx_ethtool_get_eeprom(struct net_device *netdev,
948 struct ethtool_eeprom *ee, u8 *data)
950 struct lan78xx_net *dev = netdev_priv(netdev);
952 ee->magic = LAN78XX_EEPROM_MAGIC;
954 return lan78xx_read_raw_eeprom(dev, ee->offset, ee->len, data);
957 static int lan78xx_ethtool_set_eeprom(struct net_device *netdev,
958 struct ethtool_eeprom *ee, u8 *data)
960 struct lan78xx_net *dev = netdev_priv(netdev);
962 /* Allow entire eeprom update only */
963 if ((ee->magic == LAN78XX_EEPROM_MAGIC) &&
966 (data[0] == EEPROM_INDICATOR))
967 return lan78xx_write_raw_eeprom(dev, ee->offset, ee->len, data);
968 else if ((ee->magic == LAN78XX_OTP_MAGIC) &&
971 (data[0] == OTP_INDICATOR_1))
972 return lan78xx_write_raw_eeprom(dev, ee->offset, ee->len, data);
977 static void lan78xx_get_strings(struct net_device *netdev, u32 stringset,
980 if (stringset == ETH_SS_STATS)
981 memcpy(data, lan78xx_gstrings, sizeof(lan78xx_gstrings));
984 static int lan78xx_get_sset_count(struct net_device *netdev, int sset)
986 if (sset == ETH_SS_STATS)
987 return ARRAY_SIZE(lan78xx_gstrings);
992 static void lan78xx_get_stats(struct net_device *netdev,
993 struct ethtool_stats *stats, u64 *data)
995 struct lan78xx_net *dev = netdev_priv(netdev);
996 struct lan78xx_statstage lan78xx_stat;
1000 if (usb_autopm_get_interface(dev->intf) < 0)
1003 if (lan78xx_read_stats(dev, &lan78xx_stat) > 0) {
1004 p = (u32 *)&lan78xx_stat;
1005 for (i = 0; i < (sizeof(lan78xx_stat) / (sizeof(u32))); i++)
1009 usb_autopm_put_interface(dev->intf);
1012 static void lan78xx_get_wol(struct net_device *netdev,
1013 struct ethtool_wolinfo *wol)
1015 struct lan78xx_net *dev = netdev_priv(netdev);
1018 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1020 if (usb_autopm_get_interface(dev->intf) < 0)
1023 ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
1024 if (unlikely(ret < 0)) {
1028 if (buf & USB_CFG_RMT_WKP_) {
1029 wol->supported = WAKE_ALL;
1030 wol->wolopts = pdata->wol;
1037 usb_autopm_put_interface(dev->intf);
1040 static int lan78xx_set_wol(struct net_device *netdev,
1041 struct ethtool_wolinfo *wol)
1043 struct lan78xx_net *dev = netdev_priv(netdev);
1044 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1047 ret = usb_autopm_get_interface(dev->intf);
1052 if (wol->wolopts & WAKE_UCAST)
1053 pdata->wol |= WAKE_UCAST;
1054 if (wol->wolopts & WAKE_MCAST)
1055 pdata->wol |= WAKE_MCAST;
1056 if (wol->wolopts & WAKE_BCAST)
1057 pdata->wol |= WAKE_BCAST;
1058 if (wol->wolopts & WAKE_MAGIC)
1059 pdata->wol |= WAKE_MAGIC;
1060 if (wol->wolopts & WAKE_PHY)
1061 pdata->wol |= WAKE_PHY;
1062 if (wol->wolopts & WAKE_ARP)
1063 pdata->wol |= WAKE_ARP;
1065 device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts);
1067 phy_ethtool_set_wol(netdev->phydev, wol);
1069 usb_autopm_put_interface(dev->intf);
1074 static int lan78xx_get_eee(struct net_device *net, struct ethtool_eee *edata)
1076 struct lan78xx_net *dev = netdev_priv(net);
1077 struct phy_device *phydev = net->phydev;
1081 ret = usb_autopm_get_interface(dev->intf);
1085 ret = phy_ethtool_get_eee(phydev, edata);
1089 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1090 if (buf & MAC_CR_EEE_EN_) {
1091 edata->eee_enabled = true;
1092 edata->eee_active = !!(edata->advertised &
1093 edata->lp_advertised);
1094 edata->tx_lpi_enabled = true;
1095 /* EEE_TX_LPI_REQ_DLY & tx_lpi_timer are same uSec unit */
1096 ret = lan78xx_read_reg(dev, EEE_TX_LPI_REQ_DLY, &buf);
1097 edata->tx_lpi_timer = buf;
1099 edata->eee_enabled = false;
1100 edata->eee_active = false;
1101 edata->tx_lpi_enabled = false;
1102 edata->tx_lpi_timer = 0;
1107 usb_autopm_put_interface(dev->intf);
1112 static int lan78xx_set_eee(struct net_device *net, struct ethtool_eee *edata)
1114 struct lan78xx_net *dev = netdev_priv(net);
1118 ret = usb_autopm_get_interface(dev->intf);
1122 if (edata->eee_enabled) {
1123 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1124 buf |= MAC_CR_EEE_EN_;
1125 ret = lan78xx_write_reg(dev, MAC_CR, buf);
1127 phy_ethtool_set_eee(net->phydev, edata);
1129 buf = (u32)edata->tx_lpi_timer;
1130 ret = lan78xx_write_reg(dev, EEE_TX_LPI_REQ_DLY, buf);
1132 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1133 buf &= ~MAC_CR_EEE_EN_;
1134 ret = lan78xx_write_reg(dev, MAC_CR, buf);
1137 usb_autopm_put_interface(dev->intf);
1142 static u32 lan78xx_get_link(struct net_device *net)
1144 phy_read_status(net->phydev);
1146 return net->phydev->link;
1149 int lan78xx_nway_reset(struct net_device *net)
1151 return phy_start_aneg(net->phydev);
1154 static void lan78xx_get_drvinfo(struct net_device *net,
1155 struct ethtool_drvinfo *info)
1157 struct lan78xx_net *dev = netdev_priv(net);
1159 strncpy(info->driver, DRIVER_NAME, sizeof(info->driver));
1160 strncpy(info->version, DRIVER_VERSION, sizeof(info->version));
1161 usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info));
1164 static u32 lan78xx_get_msglevel(struct net_device *net)
1166 struct lan78xx_net *dev = netdev_priv(net);
1168 return dev->msg_enable;
1171 static void lan78xx_set_msglevel(struct net_device *net, u32 level)
1173 struct lan78xx_net *dev = netdev_priv(net);
1175 dev->msg_enable = level;
1178 static int lan78xx_get_mdix_status(struct net_device *net)
1180 struct phy_device *phydev = net->phydev;
1183 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, LAN88XX_EXT_PAGE_SPACE_1);
1184 buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL);
1185 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, LAN88XX_EXT_PAGE_SPACE_0);
1190 static void lan78xx_set_mdix_status(struct net_device *net, __u8 mdix_ctrl)
1192 struct lan78xx_net *dev = netdev_priv(net);
1193 struct phy_device *phydev = net->phydev;
1196 if (mdix_ctrl == ETH_TP_MDI) {
1197 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS,
1198 LAN88XX_EXT_PAGE_SPACE_1);
1199 buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL);
1200 buf &= ~LAN88XX_EXT_MODE_CTRL_MDIX_MASK_;
1201 phy_write(phydev, LAN88XX_EXT_MODE_CTRL,
1202 buf | LAN88XX_EXT_MODE_CTRL_MDI_);
1203 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS,
1204 LAN88XX_EXT_PAGE_SPACE_0);
1205 } else if (mdix_ctrl == ETH_TP_MDI_X) {
1206 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS,
1207 LAN88XX_EXT_PAGE_SPACE_1);
1208 buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL);
1209 buf &= ~LAN88XX_EXT_MODE_CTRL_MDIX_MASK_;
1210 phy_write(phydev, LAN88XX_EXT_MODE_CTRL,
1211 buf | LAN88XX_EXT_MODE_CTRL_MDI_X_);
1212 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS,
1213 LAN88XX_EXT_PAGE_SPACE_0);
1214 } else if (mdix_ctrl == ETH_TP_MDI_AUTO) {
1215 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS,
1216 LAN88XX_EXT_PAGE_SPACE_1);
1217 buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL);
1218 buf &= ~LAN88XX_EXT_MODE_CTRL_MDIX_MASK_;
1219 phy_write(phydev, LAN88XX_EXT_MODE_CTRL,
1220 buf | LAN88XX_EXT_MODE_CTRL_AUTO_MDIX_);
1221 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS,
1222 LAN88XX_EXT_PAGE_SPACE_0);
1224 dev->mdix_ctrl = mdix_ctrl;
1227 static int lan78xx_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
1229 struct lan78xx_net *dev = netdev_priv(net);
1230 struct phy_device *phydev = net->phydev;
1234 ret = usb_autopm_get_interface(dev->intf);
1238 ret = phy_ethtool_gset(phydev, cmd);
1240 buf = lan78xx_get_mdix_status(net);
1242 buf &= LAN88XX_EXT_MODE_CTRL_MDIX_MASK_;
1243 if (buf == LAN88XX_EXT_MODE_CTRL_AUTO_MDIX_) {
1244 cmd->eth_tp_mdix = ETH_TP_MDI_AUTO;
1245 cmd->eth_tp_mdix_ctrl = ETH_TP_MDI_AUTO;
1246 } else if (buf == LAN88XX_EXT_MODE_CTRL_MDI_) {
1247 cmd->eth_tp_mdix = ETH_TP_MDI;
1248 cmd->eth_tp_mdix_ctrl = ETH_TP_MDI;
1249 } else if (buf == LAN88XX_EXT_MODE_CTRL_MDI_X_) {
1250 cmd->eth_tp_mdix = ETH_TP_MDI_X;
1251 cmd->eth_tp_mdix_ctrl = ETH_TP_MDI_X;
1254 usb_autopm_put_interface(dev->intf);
1259 static int lan78xx_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
1261 struct lan78xx_net *dev = netdev_priv(net);
1262 struct phy_device *phydev = net->phydev;
1266 ret = usb_autopm_get_interface(dev->intf);
1270 if (dev->mdix_ctrl != cmd->eth_tp_mdix_ctrl) {
1271 lan78xx_set_mdix_status(net, cmd->eth_tp_mdix_ctrl);
1274 /* change speed & duplex */
1275 ret = phy_ethtool_sset(phydev, cmd);
1277 if (!cmd->autoneg) {
1278 /* force link down */
1279 temp = phy_read(phydev, MII_BMCR);
1280 phy_write(phydev, MII_BMCR, temp | BMCR_LOOPBACK);
1282 phy_write(phydev, MII_BMCR, temp);
1285 usb_autopm_put_interface(dev->intf);
1290 static const struct ethtool_ops lan78xx_ethtool_ops = {
1291 .get_link = lan78xx_get_link,
1292 .nway_reset = lan78xx_nway_reset,
1293 .get_drvinfo = lan78xx_get_drvinfo,
1294 .get_msglevel = lan78xx_get_msglevel,
1295 .set_msglevel = lan78xx_set_msglevel,
1296 .get_settings = lan78xx_get_settings,
1297 .set_settings = lan78xx_set_settings,
1298 .get_eeprom_len = lan78xx_ethtool_get_eeprom_len,
1299 .get_eeprom = lan78xx_ethtool_get_eeprom,
1300 .set_eeprom = lan78xx_ethtool_set_eeprom,
1301 .get_ethtool_stats = lan78xx_get_stats,
1302 .get_sset_count = lan78xx_get_sset_count,
1303 .get_strings = lan78xx_get_strings,
1304 .get_wol = lan78xx_get_wol,
1305 .set_wol = lan78xx_set_wol,
1306 .get_eee = lan78xx_get_eee,
1307 .set_eee = lan78xx_set_eee,
1310 static int lan78xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
1312 if (!netif_running(netdev))
1315 return phy_mii_ioctl(netdev->phydev, rq, cmd);
1318 static void lan78xx_init_mac_address(struct lan78xx_net *dev)
1320 u32 addr_lo, addr_hi;
1324 ret = lan78xx_read_reg(dev, RX_ADDRL, &addr_lo);
1325 ret = lan78xx_read_reg(dev, RX_ADDRH, &addr_hi);
1327 addr[0] = addr_lo & 0xFF;
1328 addr[1] = (addr_lo >> 8) & 0xFF;
1329 addr[2] = (addr_lo >> 16) & 0xFF;
1330 addr[3] = (addr_lo >> 24) & 0xFF;
1331 addr[4] = addr_hi & 0xFF;
1332 addr[5] = (addr_hi >> 8) & 0xFF;
1334 if (!is_valid_ether_addr(addr)) {
1335 /* reading mac address from EEPROM or OTP */
1336 if ((lan78xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
1338 (lan78xx_read_otp(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
1340 if (is_valid_ether_addr(addr)) {
1341 /* eeprom values are valid so use them */
1342 netif_dbg(dev, ifup, dev->net,
1343 "MAC address read from EEPROM");
1345 /* generate random MAC */
1346 random_ether_addr(addr);
1347 netif_dbg(dev, ifup, dev->net,
1348 "MAC address set to random addr");
1351 addr_lo = addr[0] | (addr[1] << 8) |
1352 (addr[2] << 16) | (addr[3] << 24);
1353 addr_hi = addr[4] | (addr[5] << 8);
1355 ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo);
1356 ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi);
1358 /* generate random MAC */
1359 random_ether_addr(addr);
1360 netif_dbg(dev, ifup, dev->net,
1361 "MAC address set to random addr");
1365 ret = lan78xx_write_reg(dev, MAF_LO(0), addr_lo);
1366 ret = lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_);
1368 ether_addr_copy(dev->net->dev_addr, addr);
1371 /* MDIO read and write wrappers for phylib */
1372 static int lan78xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx)
1374 struct lan78xx_net *dev = bus->priv;
1378 ret = usb_autopm_get_interface(dev->intf);
1382 mutex_lock(&dev->phy_mutex);
1384 /* confirm MII not busy */
1385 ret = lan78xx_phy_wait_not_busy(dev);
1389 /* set the address, index & direction (read from PHY) */
1390 addr = mii_access(phy_id, idx, MII_READ);
1391 ret = lan78xx_write_reg(dev, MII_ACC, addr);
1393 ret = lan78xx_phy_wait_not_busy(dev);
1397 ret = lan78xx_read_reg(dev, MII_DATA, &val);
1399 ret = (int)(val & 0xFFFF);
1402 mutex_unlock(&dev->phy_mutex);
1403 usb_autopm_put_interface(dev->intf);
1407 static int lan78xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx,
1410 struct lan78xx_net *dev = bus->priv;
1414 ret = usb_autopm_get_interface(dev->intf);
1418 mutex_lock(&dev->phy_mutex);
1420 /* confirm MII not busy */
1421 ret = lan78xx_phy_wait_not_busy(dev);
1426 ret = lan78xx_write_reg(dev, MII_DATA, val);
1428 /* set the address, index & direction (write to PHY) */
1429 addr = mii_access(phy_id, idx, MII_WRITE);
1430 ret = lan78xx_write_reg(dev, MII_ACC, addr);
1432 ret = lan78xx_phy_wait_not_busy(dev);
1437 mutex_unlock(&dev->phy_mutex);
1438 usb_autopm_put_interface(dev->intf);
1442 static int lan78xx_mdio_init(struct lan78xx_net *dev)
1447 dev->mdiobus = mdiobus_alloc();
1448 if (!dev->mdiobus) {
1449 netdev_err(dev->net, "can't allocate MDIO bus\n");
1453 dev->mdiobus->priv = (void *)dev;
1454 dev->mdiobus->read = lan78xx_mdiobus_read;
1455 dev->mdiobus->write = lan78xx_mdiobus_write;
1456 dev->mdiobus->name = "lan78xx-mdiobus";
1458 snprintf(dev->mdiobus->id, MII_BUS_ID_SIZE, "usb-%03d:%03d",
1459 dev->udev->bus->busnum, dev->udev->devnum);
1461 dev->mdiobus->irq = kzalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
1462 if (!dev->mdiobus->irq) {
1467 /* handle our own interrupt */
1468 for (i = 0; i < PHY_MAX_ADDR; i++)
1469 dev->mdiobus->irq[i] = PHY_IGNORE_INTERRUPT;
1471 switch (dev->devid & ID_REV_CHIP_ID_MASK_) {
1474 /* set to internal PHY id */
1475 dev->mdiobus->phy_mask = ~(1 << 1);
1479 ret = mdiobus_register(dev->mdiobus);
1481 netdev_err(dev->net, "can't register MDIO bus\n");
1485 netdev_dbg(dev->net, "registered mdiobus bus %s\n", dev->mdiobus->id);
1488 kfree(dev->mdiobus->irq);
1490 mdiobus_free(dev->mdiobus);
1494 static void lan78xx_remove_mdio(struct lan78xx_net *dev)
1496 mdiobus_unregister(dev->mdiobus);
1497 kfree(dev->mdiobus->irq);
1498 mdiobus_free(dev->mdiobus);
1501 static void lan78xx_link_status_change(struct net_device *net)
1506 static int lan78xx_phy_init(struct lan78xx_net *dev)
1509 struct phy_device *phydev = dev->net->phydev;
1511 phydev = phy_find_first(dev->mdiobus);
1513 netdev_err(dev->net, "no PHY found\n");
1517 ret = phy_connect_direct(dev->net, phydev,
1518 lan78xx_link_status_change,
1519 PHY_INTERFACE_MODE_GMII);
1521 netdev_err(dev->net, "can't attach PHY to %s\n",
1526 /* set to AUTOMDIX */
1527 lan78xx_set_mdix_status(dev->net, ETH_TP_MDI_AUTO);
1529 /* MAC doesn't support 1000T Half */
1530 phydev->supported &= ~SUPPORTED_1000baseT_Half;
1531 phydev->supported |= (SUPPORTED_10baseT_Half |
1532 SUPPORTED_10baseT_Full |
1533 SUPPORTED_100baseT_Half |
1534 SUPPORTED_100baseT_Full |
1535 SUPPORTED_1000baseT_Full |
1536 SUPPORTED_Pause | SUPPORTED_Asym_Pause);
1537 genphy_config_aneg(phydev);
1539 /* Workaround to enable PHY interrupt.
1540 * phy_start_interrupts() is API for requesting and enabling
1541 * PHY interrupt. However, USB-to-Ethernet device can't use
1542 * request_irq() called in phy_start_interrupts().
1543 * Set PHY to PHY_HALTED and call phy_start()
1544 * to make a call to phy_enable_interrupts()
1549 netif_dbg(dev, ifup, dev->net, "phy initialised successfully");
1554 static int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size)
1560 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
1562 rxenabled = ((buf & MAC_RX_RXEN_) != 0);
1565 buf &= ~MAC_RX_RXEN_;
1566 ret = lan78xx_write_reg(dev, MAC_RX, buf);
1569 /* add 4 to size for FCS */
1570 buf &= ~MAC_RX_MAX_SIZE_MASK_;
1571 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_);
1573 ret = lan78xx_write_reg(dev, MAC_RX, buf);
1576 buf |= MAC_RX_RXEN_;
1577 ret = lan78xx_write_reg(dev, MAC_RX, buf);
1583 static int unlink_urbs(struct lan78xx_net *dev, struct sk_buff_head *q)
1585 struct sk_buff *skb;
1586 unsigned long flags;
1589 spin_lock_irqsave(&q->lock, flags);
1590 while (!skb_queue_empty(q)) {
1591 struct skb_data *entry;
1595 skb_queue_walk(q, skb) {
1596 entry = (struct skb_data *)skb->cb;
1597 if (entry->state != unlink_start)
1602 entry->state = unlink_start;
1605 /* Get reference count of the URB to avoid it to be
1606 * freed during usb_unlink_urb, which may trigger
1607 * use-after-free problem inside usb_unlink_urb since
1608 * usb_unlink_urb is always racing with .complete
1609 * handler(include defer_bh).
1612 spin_unlock_irqrestore(&q->lock, flags);
1613 /* during some PM-driven resume scenarios,
1614 * these (async) unlinks complete immediately
1616 ret = usb_unlink_urb(urb);
1617 if (ret != -EINPROGRESS && ret != 0)
1618 netdev_dbg(dev->net, "unlink urb err, %d\n", ret);
1622 spin_lock_irqsave(&q->lock, flags);
1624 spin_unlock_irqrestore(&q->lock, flags);
1628 static int lan78xx_change_mtu(struct net_device *netdev, int new_mtu)
1630 struct lan78xx_net *dev = netdev_priv(netdev);
1631 int ll_mtu = new_mtu + netdev->hard_header_len;
1632 int old_hard_mtu = dev->hard_mtu;
1633 int old_rx_urb_size = dev->rx_urb_size;
1636 if (new_mtu > MAX_SINGLE_PACKET_SIZE)
1641 /* no second zero-length packet read wanted after mtu-sized packets */
1642 if ((ll_mtu % dev->maxpacket) == 0)
1645 ret = lan78xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN);
1647 netdev->mtu = new_mtu;
1649 dev->hard_mtu = netdev->mtu + netdev->hard_header_len;
1650 if (dev->rx_urb_size == old_hard_mtu) {
1651 dev->rx_urb_size = dev->hard_mtu;
1652 if (dev->rx_urb_size > old_rx_urb_size) {
1653 if (netif_running(dev->net)) {
1654 unlink_urbs(dev, &dev->rxq);
1655 tasklet_schedule(&dev->bh);
1663 int lan78xx_set_mac_addr(struct net_device *netdev, void *p)
1665 struct lan78xx_net *dev = netdev_priv(netdev);
1666 struct sockaddr *addr = p;
1667 u32 addr_lo, addr_hi;
1670 if (netif_running(netdev))
1673 if (!is_valid_ether_addr(addr->sa_data))
1674 return -EADDRNOTAVAIL;
1676 ether_addr_copy(netdev->dev_addr, addr->sa_data);
1678 addr_lo = netdev->dev_addr[0] |
1679 netdev->dev_addr[1] << 8 |
1680 netdev->dev_addr[2] << 16 |
1681 netdev->dev_addr[3] << 24;
1682 addr_hi = netdev->dev_addr[4] |
1683 netdev->dev_addr[5] << 8;
1685 ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo);
1686 ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi);
1691 /* Enable or disable Rx checksum offload engine */
1692 static int lan78xx_set_features(struct net_device *netdev,
1693 netdev_features_t features)
1695 struct lan78xx_net *dev = netdev_priv(netdev);
1696 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1697 unsigned long flags;
1700 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
1702 if (features & NETIF_F_RXCSUM) {
1703 pdata->rfe_ctl |= RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_;
1704 pdata->rfe_ctl |= RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_;
1706 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_);
1707 pdata->rfe_ctl &= ~(RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_);
1710 if (features & NETIF_F_HW_VLAN_CTAG_RX)
1711 pdata->rfe_ctl |= RFE_CTL_VLAN_FILTER_;
1713 pdata->rfe_ctl &= ~RFE_CTL_VLAN_FILTER_;
1715 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
1717 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
1722 static void lan78xx_deferred_vlan_write(struct work_struct *param)
1724 struct lan78xx_priv *pdata =
1725 container_of(param, struct lan78xx_priv, set_vlan);
1726 struct lan78xx_net *dev = pdata->dev;
1728 lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, 0,
1729 DP_SEL_VHF_VLAN_LEN, pdata->vlan_table);
1732 static int lan78xx_vlan_rx_add_vid(struct net_device *netdev,
1733 __be16 proto, u16 vid)
1735 struct lan78xx_net *dev = netdev_priv(netdev);
1736 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1738 u16 vid_dword_index;
1740 vid_dword_index = (vid >> 5) & 0x7F;
1741 vid_bit_index = vid & 0x1F;
1743 pdata->vlan_table[vid_dword_index] |= (1 << vid_bit_index);
1745 /* defer register writes to a sleepable context */
1746 schedule_work(&pdata->set_vlan);
1751 static int lan78xx_vlan_rx_kill_vid(struct net_device *netdev,
1752 __be16 proto, u16 vid)
1754 struct lan78xx_net *dev = netdev_priv(netdev);
1755 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1757 u16 vid_dword_index;
1759 vid_dword_index = (vid >> 5) & 0x7F;
1760 vid_bit_index = vid & 0x1F;
1762 pdata->vlan_table[vid_dword_index] &= ~(1 << vid_bit_index);
1764 /* defer register writes to a sleepable context */
1765 schedule_work(&pdata->set_vlan);
1770 static void lan78xx_init_ltm(struct lan78xx_net *dev)
1774 u32 regs[6] = { 0 };
1776 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
1777 if (buf & USB_CFG1_LTM_ENABLE_) {
1779 /* Get values from EEPROM first */
1780 if (lan78xx_read_eeprom(dev, 0x3F, 2, temp) == 0) {
1781 if (temp[0] == 24) {
1782 ret = lan78xx_read_raw_eeprom(dev,
1789 } else if (lan78xx_read_otp(dev, 0x3F, 2, temp) == 0) {
1790 if (temp[0] == 24) {
1791 ret = lan78xx_read_raw_otp(dev,
1801 lan78xx_write_reg(dev, LTM_BELT_IDLE0, regs[0]);
1802 lan78xx_write_reg(dev, LTM_BELT_IDLE1, regs[1]);
1803 lan78xx_write_reg(dev, LTM_BELT_ACT0, regs[2]);
1804 lan78xx_write_reg(dev, LTM_BELT_ACT1, regs[3]);
1805 lan78xx_write_reg(dev, LTM_INACTIVE0, regs[4]);
1806 lan78xx_write_reg(dev, LTM_INACTIVE1, regs[5]);
1809 static int lan78xx_reset(struct lan78xx_net *dev)
1811 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1814 unsigned long timeout;
1816 ret = lan78xx_read_reg(dev, HW_CFG, &buf);
1817 buf |= HW_CFG_LRST_;
1818 ret = lan78xx_write_reg(dev, HW_CFG, buf);
1820 timeout = jiffies + HZ;
1823 ret = lan78xx_read_reg(dev, HW_CFG, &buf);
1824 if (time_after(jiffies, timeout)) {
1825 netdev_warn(dev->net,
1826 "timeout on completion of LiteReset");
1829 } while (buf & HW_CFG_LRST_);
1831 lan78xx_init_mac_address(dev);
1833 /* save DEVID for later usage */
1834 ret = lan78xx_read_reg(dev, ID_REV, &buf);
1837 /* Respond to the IN token with a NAK */
1838 ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
1839 buf |= USB_CFG_BIR_;
1840 ret = lan78xx_write_reg(dev, USB_CFG0, buf);
1843 lan78xx_init_ltm(dev);
1845 dev->net->hard_header_len += TX_OVERHEAD;
1846 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
1848 if (dev->udev->speed == USB_SPEED_SUPER) {
1849 buf = DEFAULT_BURST_CAP_SIZE / SS_USB_PKT_SIZE;
1850 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
1853 } else if (dev->udev->speed == USB_SPEED_HIGH) {
1854 buf = DEFAULT_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
1855 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
1856 dev->rx_qlen = RX_MAX_QUEUE_MEMORY / dev->rx_urb_size;
1857 dev->tx_qlen = RX_MAX_QUEUE_MEMORY / dev->hard_mtu;
1859 buf = DEFAULT_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
1860 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
1864 ret = lan78xx_write_reg(dev, BURST_CAP, buf);
1865 ret = lan78xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
1867 ret = lan78xx_read_reg(dev, HW_CFG, &buf);
1869 ret = lan78xx_write_reg(dev, HW_CFG, buf);
1871 ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
1872 buf |= USB_CFG_BCE_;
1873 ret = lan78xx_write_reg(dev, USB_CFG0, buf);
1875 /* set FIFO sizes */
1876 buf = (MAX_RX_FIFO_SIZE - 512) / 512;
1877 ret = lan78xx_write_reg(dev, FCT_RX_FIFO_END, buf);
1879 buf = (MAX_TX_FIFO_SIZE - 512) / 512;
1880 ret = lan78xx_write_reg(dev, FCT_TX_FIFO_END, buf);
1882 ret = lan78xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
1883 ret = lan78xx_write_reg(dev, FLOW, 0);
1884 ret = lan78xx_write_reg(dev, FCT_FLOW, 0);
1886 /* Don't need rfe_ctl_lock during initialisation */
1887 ret = lan78xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1888 pdata->rfe_ctl |= RFE_CTL_BCAST_EN_ | RFE_CTL_DA_PERFECT_;
1889 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
1891 /* Enable or disable checksum offload engines */
1892 lan78xx_set_features(dev->net, dev->net->features);
1894 lan78xx_set_multicast(dev->net);
1897 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
1898 buf |= PMT_CTL_PHY_RST_;
1899 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
1901 timeout = jiffies + HZ;
1904 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
1905 if (time_after(jiffies, timeout)) {
1906 netdev_warn(dev->net, "timeout waiting for PHY Reset");
1909 } while ((buf & PMT_CTL_PHY_RST_) || !(buf & PMT_CTL_READY_));
1911 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1912 buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_;
1913 ret = lan78xx_write_reg(dev, MAC_CR, buf);
1915 /* enable PHY interrupts */
1916 ret = lan78xx_read_reg(dev, INT_EP_CTL, &buf);
1917 buf |= INT_ENP_PHY_INT;
1918 ret = lan78xx_write_reg(dev, INT_EP_CTL, buf);
1920 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
1921 buf |= MAC_TX_TXEN_;
1922 ret = lan78xx_write_reg(dev, MAC_TX, buf);
1924 ret = lan78xx_read_reg(dev, FCT_TX_CTL, &buf);
1925 buf |= FCT_TX_CTL_EN_;
1926 ret = lan78xx_write_reg(dev, FCT_TX_CTL, buf);
1928 ret = lan78xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN);
1930 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
1931 buf |= MAC_RX_RXEN_;
1932 ret = lan78xx_write_reg(dev, MAC_RX, buf);
1934 ret = lan78xx_read_reg(dev, FCT_RX_CTL, &buf);
1935 buf |= FCT_RX_CTL_EN_;
1936 ret = lan78xx_write_reg(dev, FCT_RX_CTL, buf);
1941 static int lan78xx_open(struct net_device *net)
1943 struct lan78xx_net *dev = netdev_priv(net);
1946 ret = usb_autopm_get_interface(dev->intf);
1950 ret = lan78xx_reset(dev);
1954 ret = lan78xx_phy_init(dev);
1958 /* for Link Check */
1959 if (dev->urb_intr) {
1960 ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL);
1962 netif_err(dev, ifup, dev->net,
1963 "intr submit %d\n", ret);
1968 set_bit(EVENT_DEV_OPEN, &dev->flags);
1970 netif_start_queue(net);
1972 dev->link_on = false;
1974 lan78xx_defer_kevent(dev, EVENT_LINK_RESET);
1976 usb_autopm_put_interface(dev->intf);
1982 static void lan78xx_terminate_urbs(struct lan78xx_net *dev)
1984 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(unlink_wakeup);
1985 DECLARE_WAITQUEUE(wait, current);
1988 /* ensure there are no more active urbs */
1989 add_wait_queue(&unlink_wakeup, &wait);
1990 set_current_state(TASK_UNINTERRUPTIBLE);
1991 dev->wait = &unlink_wakeup;
1992 temp = unlink_urbs(dev, &dev->txq) + unlink_urbs(dev, &dev->rxq);
1994 /* maybe wait for deletions to finish. */
1995 while (!skb_queue_empty(&dev->rxq) &&
1996 !skb_queue_empty(&dev->txq) &&
1997 !skb_queue_empty(&dev->done)) {
1998 schedule_timeout(msecs_to_jiffies(UNLINK_TIMEOUT_MS));
1999 set_current_state(TASK_UNINTERRUPTIBLE);
2000 netif_dbg(dev, ifdown, dev->net,
2001 "waited for %d urb completions\n", temp);
2003 set_current_state(TASK_RUNNING);
2005 remove_wait_queue(&unlink_wakeup, &wait);
2008 int lan78xx_stop(struct net_device *net)
2010 struct lan78xx_net *dev = netdev_priv(net);
2012 phy_stop(net->phydev);
2013 phy_disconnect(net->phydev);
2016 clear_bit(EVENT_DEV_OPEN, &dev->flags);
2017 netif_stop_queue(net);
2019 netif_info(dev, ifdown, dev->net,
2020 "stop stats: rx/tx %lu/%lu, errs %lu/%lu\n",
2021 net->stats.rx_packets, net->stats.tx_packets,
2022 net->stats.rx_errors, net->stats.tx_errors);
2024 lan78xx_terminate_urbs(dev);
2026 usb_kill_urb(dev->urb_intr);
2028 skb_queue_purge(&dev->rxq_pause);
2030 /* deferred work (task, timer, softirq) must also stop.
2031 * can't flush_scheduled_work() until we drop rtnl (later),
2032 * else workers could deadlock; so make workers a NOP.
2035 cancel_delayed_work_sync(&dev->wq);
2036 tasklet_kill(&dev->bh);
2038 usb_autopm_put_interface(dev->intf);
2043 static int lan78xx_linearize(struct sk_buff *skb)
2045 return skb_linearize(skb);
2048 static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev,
2049 struct sk_buff *skb, gfp_t flags)
2051 u32 tx_cmd_a, tx_cmd_b;
2053 if (skb_headroom(skb) < TX_OVERHEAD) {
2054 struct sk_buff *skb2;
2056 skb2 = skb_copy_expand(skb, TX_OVERHEAD, 0, flags);
2057 dev_kfree_skb_any(skb);
2063 if (lan78xx_linearize(skb) < 0)
2066 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN_MASK_) | TX_CMD_A_FCS_;
2068 if (skb->ip_summed == CHECKSUM_PARTIAL)
2069 tx_cmd_a |= TX_CMD_A_IPE_ | TX_CMD_A_TPE_;
2072 if (skb_is_gso(skb)) {
2073 u16 mss = max(skb_shinfo(skb)->gso_size, TX_CMD_B_MSS_MIN_);
2075 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT_) & TX_CMD_B_MSS_MASK_;
2077 tx_cmd_a |= TX_CMD_A_LSO_;
2080 if (skb_vlan_tag_present(skb)) {
2081 tx_cmd_a |= TX_CMD_A_IVTG_;
2082 tx_cmd_b |= skb_vlan_tag_get(skb) & TX_CMD_B_VTAG_MASK_;
2086 cpu_to_le32s(&tx_cmd_b);
2087 memcpy(skb->data, &tx_cmd_b, 4);
2090 cpu_to_le32s(&tx_cmd_a);
2091 memcpy(skb->data, &tx_cmd_a, 4);
2096 static enum skb_state defer_bh(struct lan78xx_net *dev, struct sk_buff *skb,
2097 struct sk_buff_head *list, enum skb_state state)
2099 unsigned long flags;
2100 enum skb_state old_state;
2101 struct skb_data *entry = (struct skb_data *)skb->cb;
2103 spin_lock_irqsave(&list->lock, flags);
2104 old_state = entry->state;
2105 entry->state = state;
2107 __skb_unlink(skb, list);
2108 spin_unlock(&list->lock);
2109 spin_lock(&dev->done.lock);
2111 __skb_queue_tail(&dev->done, skb);
2112 if (skb_queue_len(&dev->done) == 1)
2113 tasklet_schedule(&dev->bh);
2114 spin_unlock_irqrestore(&dev->done.lock, flags);
2119 static void tx_complete(struct urb *urb)
2121 struct sk_buff *skb = (struct sk_buff *)urb->context;
2122 struct skb_data *entry = (struct skb_data *)skb->cb;
2123 struct lan78xx_net *dev = entry->dev;
2125 if (urb->status == 0) {
2126 dev->net->stats.tx_packets++;
2127 dev->net->stats.tx_bytes += entry->length;
2129 dev->net->stats.tx_errors++;
2131 switch (urb->status) {
2133 lan78xx_defer_kevent(dev, EVENT_TX_HALT);
2136 /* software-driven interface shutdown */
2144 netif_stop_queue(dev->net);
2147 netif_dbg(dev, tx_err, dev->net,
2148 "tx err %d\n", entry->urb->status);
2153 usb_autopm_put_interface_async(dev->intf);
2155 defer_bh(dev, skb, &dev->txq, tx_done);
2158 static void lan78xx_queue_skb(struct sk_buff_head *list,
2159 struct sk_buff *newsk, enum skb_state state)
2161 struct skb_data *entry = (struct skb_data *)newsk->cb;
2163 __skb_queue_tail(list, newsk);
2164 entry->state = state;
2167 netdev_tx_t lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net)
2169 struct lan78xx_net *dev = netdev_priv(net);
2170 struct sk_buff *skb2 = NULL;
2173 skb_tx_timestamp(skb);
2174 skb2 = lan78xx_tx_prep(dev, skb, GFP_ATOMIC);
2178 skb_queue_tail(&dev->txq_pend, skb2);
2180 if (skb_queue_len(&dev->txq_pend) > 10)
2181 netif_stop_queue(net);
2183 netif_dbg(dev, tx_err, dev->net,
2184 "lan78xx_tx_prep return NULL\n");
2185 dev->net->stats.tx_errors++;
2186 dev->net->stats.tx_dropped++;
2189 tasklet_schedule(&dev->bh);
2191 return NETDEV_TX_OK;
2194 int lan78xx_get_endpoints(struct lan78xx_net *dev, struct usb_interface *intf)
2197 struct usb_host_interface *alt = NULL;
2198 struct usb_host_endpoint *in = NULL, *out = NULL;
2199 struct usb_host_endpoint *status = NULL;
2201 for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
2207 alt = intf->altsetting + tmp;
2209 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
2210 struct usb_host_endpoint *e;
2213 e = alt->endpoint + ep;
2214 switch (e->desc.bmAttributes) {
2215 case USB_ENDPOINT_XFER_INT:
2216 if (!usb_endpoint_dir_in(&e->desc))
2220 case USB_ENDPOINT_XFER_BULK:
2225 if (usb_endpoint_dir_in(&e->desc)) {
2228 else if (intr && !status)
2238 if (!alt || !in || !out)
2241 dev->pipe_in = usb_rcvbulkpipe(dev->udev,
2242 in->desc.bEndpointAddress &
2243 USB_ENDPOINT_NUMBER_MASK);
2244 dev->pipe_out = usb_sndbulkpipe(dev->udev,
2245 out->desc.bEndpointAddress &
2246 USB_ENDPOINT_NUMBER_MASK);
2247 dev->ep_intr = status;
2252 static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf)
2254 struct lan78xx_priv *pdata = NULL;
2258 ret = lan78xx_get_endpoints(dev, intf);
2260 dev->data[0] = (unsigned long)kzalloc(sizeof(*pdata), GFP_KERNEL);
2262 pdata = (struct lan78xx_priv *)(dev->data[0]);
2264 netdev_warn(dev->net, "Unable to allocate lan78xx_priv");
2270 spin_lock_init(&pdata->rfe_ctl_lock);
2271 mutex_init(&pdata->dataport_mutex);
2273 INIT_WORK(&pdata->set_multicast, lan78xx_deferred_multicast_write);
2275 for (i = 0; i < DP_SEL_VHF_VLAN_LEN; i++)
2276 pdata->vlan_table[i] = 0;
2278 INIT_WORK(&pdata->set_vlan, lan78xx_deferred_vlan_write);
2280 dev->net->features = 0;
2282 if (DEFAULT_TX_CSUM_ENABLE)
2283 dev->net->features |= NETIF_F_HW_CSUM;
2285 if (DEFAULT_RX_CSUM_ENABLE)
2286 dev->net->features |= NETIF_F_RXCSUM;
2288 if (DEFAULT_TSO_CSUM_ENABLE)
2289 dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG;
2291 dev->net->hw_features = dev->net->features;
2293 /* Init all registers */
2294 ret = lan78xx_reset(dev);
2296 lan78xx_mdio_init(dev);
2298 dev->net->flags |= IFF_MULTICAST;
2300 pdata->wol = WAKE_MAGIC;
2305 static void lan78xx_unbind(struct lan78xx_net *dev, struct usb_interface *intf)
2307 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2309 lan78xx_remove_mdio(dev);
2312 netif_dbg(dev, ifdown, dev->net, "free pdata");
2319 static void lan78xx_rx_csum_offload(struct lan78xx_net *dev,
2320 struct sk_buff *skb,
2321 u32 rx_cmd_a, u32 rx_cmd_b)
2323 if (!(dev->net->features & NETIF_F_RXCSUM) ||
2324 unlikely(rx_cmd_a & RX_CMD_A_ICSM_)) {
2325 skb->ip_summed = CHECKSUM_NONE;
2327 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT_));
2328 skb->ip_summed = CHECKSUM_COMPLETE;
2332 void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb)
2336 if (test_bit(EVENT_RX_PAUSED, &dev->flags)) {
2337 skb_queue_tail(&dev->rxq_pause, skb);
2341 skb->protocol = eth_type_trans(skb, dev->net);
2342 dev->net->stats.rx_packets++;
2343 dev->net->stats.rx_bytes += skb->len;
2345 netif_dbg(dev, rx_status, dev->net, "< rx, len %zu, type 0x%x\n",
2346 skb->len + sizeof(struct ethhdr), skb->protocol);
2347 memset(skb->cb, 0, sizeof(struct skb_data));
2349 if (skb_defer_rx_timestamp(skb))
2352 status = netif_rx(skb);
2353 if (status != NET_RX_SUCCESS)
2354 netif_dbg(dev, rx_err, dev->net,
2355 "netif_rx status %d\n", status);
2358 static int lan78xx_rx(struct lan78xx_net *dev, struct sk_buff *skb)
2360 if (skb->len < dev->net->hard_header_len)
2363 while (skb->len > 0) {
2364 u32 rx_cmd_a, rx_cmd_b, align_count, size;
2366 struct sk_buff *skb2;
2367 unsigned char *packet;
2369 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a));
2370 le32_to_cpus(&rx_cmd_a);
2371 skb_pull(skb, sizeof(rx_cmd_a));
2373 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b));
2374 le32_to_cpus(&rx_cmd_b);
2375 skb_pull(skb, sizeof(rx_cmd_b));
2377 memcpy(&rx_cmd_c, skb->data, sizeof(rx_cmd_c));
2378 le16_to_cpus(&rx_cmd_c);
2379 skb_pull(skb, sizeof(rx_cmd_c));
2383 /* get the packet length */
2384 size = (rx_cmd_a & RX_CMD_A_LEN_MASK_);
2385 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
2387 if (unlikely(rx_cmd_a & RX_CMD_A_RED_)) {
2388 netif_dbg(dev, rx_err, dev->net,
2389 "Error rx_cmd_a=0x%08x", rx_cmd_a);
2391 /* last frame in this batch */
2392 if (skb->len == size) {
2393 lan78xx_rx_csum_offload(dev, skb,
2394 rx_cmd_a, rx_cmd_b);
2396 skb_trim(skb, skb->len - 4); /* remove fcs */
2397 skb->truesize = size + sizeof(struct sk_buff);
2402 skb2 = skb_clone(skb, GFP_ATOMIC);
2403 if (unlikely(!skb2)) {
2404 netdev_warn(dev->net, "Error allocating skb");
2409 skb2->data = packet;
2410 skb_set_tail_pointer(skb2, size);
2412 lan78xx_rx_csum_offload(dev, skb2, rx_cmd_a, rx_cmd_b);
2414 skb_trim(skb2, skb2->len - 4); /* remove fcs */
2415 skb2->truesize = size + sizeof(struct sk_buff);
2417 lan78xx_skb_return(dev, skb2);
2420 skb_pull(skb, size);
2422 /* padding bytes before the next frame starts */
2424 skb_pull(skb, align_count);
2427 if (unlikely(skb->len < 0)) {
2428 netdev_warn(dev->net, "invalid rx length<0 %d", skb->len);
2435 static inline void rx_process(struct lan78xx_net *dev, struct sk_buff *skb)
2437 if (!lan78xx_rx(dev, skb)) {
2438 dev->net->stats.rx_errors++;
2443 lan78xx_skb_return(dev, skb);
2447 netif_dbg(dev, rx_err, dev->net, "drop\n");
2448 dev->net->stats.rx_errors++;
2450 skb_queue_tail(&dev->done, skb);
2453 static void rx_complete(struct urb *urb);
2455 static int rx_submit(struct lan78xx_net *dev, struct urb *urb, gfp_t flags)
2457 struct sk_buff *skb;
2458 struct skb_data *entry;
2459 unsigned long lockflags;
2460 size_t size = dev->rx_urb_size;
2463 skb = netdev_alloc_skb_ip_align(dev->net, size);
2469 entry = (struct skb_data *)skb->cb;
2474 usb_fill_bulk_urb(urb, dev->udev, dev->pipe_in,
2475 skb->data, size, rx_complete, skb);
2477 spin_lock_irqsave(&dev->rxq.lock, lockflags);
2479 if (netif_device_present(dev->net) &&
2480 netif_running(dev->net) &&
2481 !test_bit(EVENT_RX_HALT, &dev->flags) &&
2482 !test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
2483 ret = usb_submit_urb(urb, GFP_ATOMIC);
2486 lan78xx_queue_skb(&dev->rxq, skb, rx_start);
2489 lan78xx_defer_kevent(dev, EVENT_RX_HALT);
2492 netif_dbg(dev, ifdown, dev->net, "device gone\n");
2493 netif_device_detach(dev->net);
2499 netif_dbg(dev, rx_err, dev->net,
2500 "rx submit, %d\n", ret);
2501 tasklet_schedule(&dev->bh);
2504 netif_dbg(dev, ifdown, dev->net, "rx: stopped\n");
2507 spin_unlock_irqrestore(&dev->rxq.lock, lockflags);
2509 dev_kfree_skb_any(skb);
2515 static void rx_complete(struct urb *urb)
2517 struct sk_buff *skb = (struct sk_buff *)urb->context;
2518 struct skb_data *entry = (struct skb_data *)skb->cb;
2519 struct lan78xx_net *dev = entry->dev;
2520 int urb_status = urb->status;
2521 enum skb_state state;
2523 skb_put(skb, urb->actual_length);
2527 switch (urb_status) {
2529 if (skb->len < dev->net->hard_header_len) {
2531 dev->net->stats.rx_errors++;
2532 dev->net->stats.rx_length_errors++;
2533 netif_dbg(dev, rx_err, dev->net,
2534 "rx length %d\n", skb->len);
2536 usb_mark_last_busy(dev->udev);
2539 dev->net->stats.rx_errors++;
2540 lan78xx_defer_kevent(dev, EVENT_RX_HALT);
2542 case -ECONNRESET: /* async unlink */
2543 case -ESHUTDOWN: /* hardware gone */
2544 netif_dbg(dev, ifdown, dev->net,
2545 "rx shutdown, code %d\n", urb_status);
2553 dev->net->stats.rx_errors++;
2559 /* data overrun ... flush fifo? */
2561 dev->net->stats.rx_over_errors++;
2566 dev->net->stats.rx_errors++;
2567 netif_dbg(dev, rx_err, dev->net, "rx status %d\n", urb_status);
2571 state = defer_bh(dev, skb, &dev->rxq, state);
2574 if (netif_running(dev->net) &&
2575 !test_bit(EVENT_RX_HALT, &dev->flags) &&
2576 state != unlink_start) {
2577 rx_submit(dev, urb, GFP_ATOMIC);
2582 netif_dbg(dev, rx_err, dev->net, "no read resubmitted\n");
2585 static void lan78xx_tx_bh(struct lan78xx_net *dev)
2588 struct urb *urb = NULL;
2589 struct skb_data *entry;
2590 unsigned long flags;
2591 struct sk_buff_head *tqp = &dev->txq_pend;
2592 struct sk_buff *skb, *skb2;
2595 int skb_totallen, pkt_cnt;
2599 for (skb = tqp->next; pkt_cnt < tqp->qlen; skb = skb->next) {
2600 if (skb_is_gso(skb)) {
2602 /* handle previous packets first */
2606 skb2 = skb_dequeue(tqp);
2610 if ((skb_totallen + skb->len) > MAX_SINGLE_PACKET_SIZE)
2612 skb_totallen = skb->len + roundup(skb_totallen, sizeof(u32));
2616 /* copy to a single skb */
2617 skb = alloc_skb(skb_totallen, GFP_ATOMIC);
2621 skb_put(skb, skb_totallen);
2623 for (count = pos = 0; count < pkt_cnt; count++) {
2624 skb2 = skb_dequeue(tqp);
2626 memcpy(skb->data + pos, skb2->data, skb2->len);
2627 pos += roundup(skb2->len, sizeof(u32));
2628 dev_kfree_skb(skb2);
2632 length = skb_totallen;
2635 urb = usb_alloc_urb(0, GFP_ATOMIC);
2637 netif_dbg(dev, tx_err, dev->net, "no urb\n");
2641 entry = (struct skb_data *)skb->cb;
2644 entry->length = length;
2646 spin_lock_irqsave(&dev->txq.lock, flags);
2647 ret = usb_autopm_get_interface_async(dev->intf);
2649 spin_unlock_irqrestore(&dev->txq.lock, flags);
2653 usb_fill_bulk_urb(urb, dev->udev, dev->pipe_out,
2654 skb->data, skb->len, tx_complete, skb);
2656 if (length % dev->maxpacket == 0) {
2657 /* send USB_ZERO_PACKET */
2658 urb->transfer_flags |= URB_ZERO_PACKET;
2662 /* if this triggers the device is still a sleep */
2663 if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
2664 /* transmission will be done in resume */
2665 usb_anchor_urb(urb, &dev->deferred);
2666 /* no use to process more packets */
2667 netif_stop_queue(dev->net);
2669 spin_unlock_irqrestore(&dev->txq.lock, flags);
2670 netdev_dbg(dev->net, "Delaying transmission for resumption\n");
2675 ret = usb_submit_urb(urb, GFP_ATOMIC);
2678 dev->net->trans_start = jiffies;
2679 lan78xx_queue_skb(&dev->txq, skb, tx_start);
2680 if (skb_queue_len(&dev->txq) >= dev->tx_qlen)
2681 netif_stop_queue(dev->net);
2684 netif_stop_queue(dev->net);
2685 lan78xx_defer_kevent(dev, EVENT_TX_HALT);
2686 usb_autopm_put_interface_async(dev->intf);
2689 usb_autopm_put_interface_async(dev->intf);
2690 netif_dbg(dev, tx_err, dev->net,
2691 "tx: submit urb err %d\n", ret);
2695 spin_unlock_irqrestore(&dev->txq.lock, flags);
2698 netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", ret);
2700 dev->net->stats.tx_dropped++;
2702 dev_kfree_skb_any(skb);
2705 netif_dbg(dev, tx_queued, dev->net,
2706 "> tx, len %d, type 0x%x\n", length, skb->protocol);
2709 static void lan78xx_rx_bh(struct lan78xx_net *dev)
2714 if (skb_queue_len(&dev->rxq) < dev->rx_qlen) {
2715 for (i = 0; i < 10; i++) {
2716 if (skb_queue_len(&dev->rxq) >= dev->rx_qlen)
2718 urb = usb_alloc_urb(0, GFP_ATOMIC);
2720 if (rx_submit(dev, urb, GFP_ATOMIC) == -ENOLINK)
2724 if (skb_queue_len(&dev->rxq) < dev->rx_qlen)
2725 tasklet_schedule(&dev->bh);
2727 if (skb_queue_len(&dev->txq) < dev->tx_qlen)
2728 netif_wake_queue(dev->net);
2731 static void lan78xx_bh(unsigned long param)
2733 struct lan78xx_net *dev = (struct lan78xx_net *)param;
2734 struct sk_buff *skb;
2735 struct skb_data *entry;
2737 while ((skb = skb_dequeue(&dev->done))) {
2738 entry = (struct skb_data *)(skb->cb);
2739 switch (entry->state) {
2741 entry->state = rx_cleanup;
2742 rx_process(dev, skb);
2745 usb_free_urb(entry->urb);
2749 usb_free_urb(entry->urb);
2753 netdev_dbg(dev->net, "skb state %d\n", entry->state);
2758 if (netif_device_present(dev->net) && netif_running(dev->net)) {
2759 if (!skb_queue_empty(&dev->txq_pend))
2762 if (!timer_pending(&dev->delay) &&
2763 !test_bit(EVENT_RX_HALT, &dev->flags))
2768 static void lan78xx_delayedwork(struct work_struct *work)
2771 struct lan78xx_net *dev;
2773 dev = container_of(work, struct lan78xx_net, wq.work);
2775 if (test_bit(EVENT_TX_HALT, &dev->flags)) {
2776 unlink_urbs(dev, &dev->txq);
2777 status = usb_autopm_get_interface(dev->intf);
2780 status = usb_clear_halt(dev->udev, dev->pipe_out);
2781 usb_autopm_put_interface(dev->intf);
2784 status != -ESHUTDOWN) {
2785 if (netif_msg_tx_err(dev))
2787 netdev_err(dev->net,
2788 "can't clear tx halt, status %d\n",
2791 clear_bit(EVENT_TX_HALT, &dev->flags);
2792 if (status != -ESHUTDOWN)
2793 netif_wake_queue(dev->net);
2796 if (test_bit(EVENT_RX_HALT, &dev->flags)) {
2797 unlink_urbs(dev, &dev->rxq);
2798 status = usb_autopm_get_interface(dev->intf);
2801 status = usb_clear_halt(dev->udev, dev->pipe_in);
2802 usb_autopm_put_interface(dev->intf);
2805 status != -ESHUTDOWN) {
2806 if (netif_msg_rx_err(dev))
2808 netdev_err(dev->net,
2809 "can't clear rx halt, status %d\n",
2812 clear_bit(EVENT_RX_HALT, &dev->flags);
2813 tasklet_schedule(&dev->bh);
2817 if (test_bit(EVENT_LINK_RESET, &dev->flags)) {
2820 clear_bit(EVENT_LINK_RESET, &dev->flags);
2821 status = usb_autopm_get_interface(dev->intf);
2824 if (lan78xx_link_reset(dev) < 0) {
2825 usb_autopm_put_interface(dev->intf);
2827 netdev_info(dev->net, "link reset failed (%d)\n",
2830 usb_autopm_put_interface(dev->intf);
2835 static void intr_complete(struct urb *urb)
2837 struct lan78xx_net *dev = urb->context;
2838 int status = urb->status;
2843 lan78xx_status(dev, urb);
2846 /* software-driven interface shutdown */
2847 case -ENOENT: /* urb killed */
2848 case -ESHUTDOWN: /* hardware gone */
2849 netif_dbg(dev, ifdown, dev->net,
2850 "intr shutdown, code %d\n", status);
2853 /* NOTE: not throttling like RX/TX, since this endpoint
2854 * already polls infrequently
2857 netdev_dbg(dev->net, "intr status %d\n", status);
2861 if (!netif_running(dev->net))
2864 memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
2865 status = usb_submit_urb(urb, GFP_ATOMIC);
2867 netif_err(dev, timer, dev->net,
2868 "intr resubmit --> %d\n", status);
2871 static void lan78xx_disconnect(struct usb_interface *intf)
2873 struct lan78xx_net *dev;
2874 struct usb_device *udev;
2875 struct net_device *net;
2877 dev = usb_get_intfdata(intf);
2878 usb_set_intfdata(intf, NULL);
2882 udev = interface_to_usbdev(intf);
2885 unregister_netdev(net);
2887 cancel_delayed_work_sync(&dev->wq);
2889 usb_scuttle_anchored_urbs(&dev->deferred);
2891 lan78xx_unbind(dev, intf);
2893 usb_kill_urb(dev->urb_intr);
2894 usb_free_urb(dev->urb_intr);
2900 void lan78xx_tx_timeout(struct net_device *net)
2902 struct lan78xx_net *dev = netdev_priv(net);
2904 unlink_urbs(dev, &dev->txq);
2905 tasklet_schedule(&dev->bh);
2908 static const struct net_device_ops lan78xx_netdev_ops = {
2909 .ndo_open = lan78xx_open,
2910 .ndo_stop = lan78xx_stop,
2911 .ndo_start_xmit = lan78xx_start_xmit,
2912 .ndo_tx_timeout = lan78xx_tx_timeout,
2913 .ndo_change_mtu = lan78xx_change_mtu,
2914 .ndo_set_mac_address = lan78xx_set_mac_addr,
2915 .ndo_validate_addr = eth_validate_addr,
2916 .ndo_do_ioctl = lan78xx_ioctl,
2917 .ndo_set_rx_mode = lan78xx_set_multicast,
2918 .ndo_set_features = lan78xx_set_features,
2919 .ndo_vlan_rx_add_vid = lan78xx_vlan_rx_add_vid,
2920 .ndo_vlan_rx_kill_vid = lan78xx_vlan_rx_kill_vid,
2923 static int lan78xx_probe(struct usb_interface *intf,
2924 const struct usb_device_id *id)
2926 struct lan78xx_net *dev;
2927 struct net_device *netdev;
2928 struct usb_device *udev;
2934 udev = interface_to_usbdev(intf);
2935 udev = usb_get_dev(udev);
2938 netdev = alloc_etherdev(sizeof(struct lan78xx_net));
2940 dev_err(&intf->dev, "Error: OOM\n");
2944 /* netdev_printk() needs this */
2945 SET_NETDEV_DEV(netdev, &intf->dev);
2947 dev = netdev_priv(netdev);
2951 dev->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
2952 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
2954 skb_queue_head_init(&dev->rxq);
2955 skb_queue_head_init(&dev->txq);
2956 skb_queue_head_init(&dev->done);
2957 skb_queue_head_init(&dev->rxq_pause);
2958 skb_queue_head_init(&dev->txq_pend);
2959 mutex_init(&dev->phy_mutex);
2961 tasklet_init(&dev->bh, lan78xx_bh, (unsigned long)dev);
2962 INIT_DELAYED_WORK(&dev->wq, lan78xx_delayedwork);
2963 init_usb_anchor(&dev->deferred);
2965 netdev->netdev_ops = &lan78xx_netdev_ops;
2966 netdev->watchdog_timeo = TX_TIMEOUT_JIFFIES;
2967 netdev->ethtool_ops = &lan78xx_ethtool_ops;
2969 ret = lan78xx_bind(dev, intf);
2972 strcpy(netdev->name, "eth%d");
2974 if (netdev->mtu > (dev->hard_mtu - netdev->hard_header_len))
2975 netdev->mtu = dev->hard_mtu - netdev->hard_header_len;
2977 dev->ep_blkin = (intf->cur_altsetting)->endpoint + 0;
2978 dev->ep_blkout = (intf->cur_altsetting)->endpoint + 1;
2979 dev->ep_intr = (intf->cur_altsetting)->endpoint + 2;
2981 dev->pipe_in = usb_rcvbulkpipe(udev, BULK_IN_PIPE);
2982 dev->pipe_out = usb_sndbulkpipe(udev, BULK_OUT_PIPE);
2984 dev->pipe_intr = usb_rcvintpipe(dev->udev,
2985 dev->ep_intr->desc.bEndpointAddress &
2986 USB_ENDPOINT_NUMBER_MASK);
2987 period = dev->ep_intr->desc.bInterval;
2989 maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0);
2990 buf = kmalloc(maxp, GFP_KERNEL);
2992 dev->urb_intr = usb_alloc_urb(0, GFP_KERNEL);
2993 if (!dev->urb_intr) {
2997 usb_fill_int_urb(dev->urb_intr, dev->udev,
2998 dev->pipe_intr, buf, maxp,
2999 intr_complete, dev, period);
3003 dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1);
3005 /* driver requires remote-wakeup capability during autosuspend. */
3006 intf->needs_remote_wakeup = 1;
3008 ret = register_netdev(netdev);
3010 netif_err(dev, probe, netdev, "couldn't register the device\n");
3014 usb_set_intfdata(intf, dev);
3016 ret = device_set_wakeup_enable(&udev->dev, true);
3018 /* Default delay of 2sec has more overhead than advantage.
3019 * Set to 10sec as default.
3021 pm_runtime_set_autosuspend_delay(&udev->dev,
3022 DEFAULT_AUTOSUSPEND_DELAY);
3027 lan78xx_unbind(dev, intf);
3029 free_netdev(netdev);
3036 static u16 lan78xx_wakeframe_crc16(const u8 *buf, int len)
3038 const u16 crc16poly = 0x8005;
3044 for (i = 0; i < len; i++) {
3046 for (bit = 0; bit < 8; bit++) {
3050 if (msb ^ (u16)(data & 1)) {
3052 crc |= (u16)0x0001U;
3061 static int lan78xx_set_suspend(struct lan78xx_net *dev, u32 wol)
3069 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E };
3070 const u8 ipv6_multicast[3] = { 0x33, 0x33 };
3071 const u8 arp_type[2] = { 0x08, 0x06 };
3073 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3074 buf &= ~MAC_TX_TXEN_;
3075 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3076 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3077 buf &= ~MAC_RX_RXEN_;
3078 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3080 ret = lan78xx_write_reg(dev, WUCSR, 0);
3081 ret = lan78xx_write_reg(dev, WUCSR2, 0);
3082 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
3087 ret = lan78xx_read_reg(dev, PMT_CTL, &temp_pmt_ctl);
3088 temp_pmt_ctl &= ~PMT_CTL_RES_CLR_WKP_EN_;
3089 temp_pmt_ctl |= PMT_CTL_RES_CLR_WKP_STS_;
3091 for (mask_index = 0; mask_index < NUM_OF_WUF_CFG; mask_index++)
3092 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), 0);
3095 if (wol & WAKE_PHY) {
3096 temp_pmt_ctl |= PMT_CTL_PHY_WAKE_EN_;
3098 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3099 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3100 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3102 if (wol & WAKE_MAGIC) {
3103 temp_wucsr |= WUCSR_MPEN_;
3105 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3106 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3107 temp_pmt_ctl |= PMT_CTL_SUS_MODE_3_;
3109 if (wol & WAKE_BCAST) {
3110 temp_wucsr |= WUCSR_BCST_EN_;
3112 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3113 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3114 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3116 if (wol & WAKE_MCAST) {
3117 temp_wucsr |= WUCSR_WAKE_EN_;
3119 /* set WUF_CFG & WUF_MASK for IPv4 Multicast */
3120 crc = lan78xx_wakeframe_crc16(ipv4_multicast, 3);
3121 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
3123 WUF_CFGX_TYPE_MCAST_ |
3124 (0 << WUF_CFGX_OFFSET_SHIFT_) |
3125 (crc & WUF_CFGX_CRC16_MASK_));
3127 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 7);
3128 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
3129 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
3130 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
3133 /* for IPv6 Multicast */
3134 crc = lan78xx_wakeframe_crc16(ipv6_multicast, 2);
3135 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
3137 WUF_CFGX_TYPE_MCAST_ |
3138 (0 << WUF_CFGX_OFFSET_SHIFT_) |
3139 (crc & WUF_CFGX_CRC16_MASK_));
3141 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 3);
3142 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
3143 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
3144 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
3147 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3148 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3149 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3151 if (wol & WAKE_UCAST) {
3152 temp_wucsr |= WUCSR_PFDA_EN_;
3154 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3155 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3156 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3158 if (wol & WAKE_ARP) {
3159 temp_wucsr |= WUCSR_WAKE_EN_;
3161 /* set WUF_CFG & WUF_MASK
3162 * for packettype (offset 12,13) = ARP (0x0806)
3164 crc = lan78xx_wakeframe_crc16(arp_type, 2);
3165 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
3167 WUF_CFGX_TYPE_ALL_ |
3168 (0 << WUF_CFGX_OFFSET_SHIFT_) |
3169 (crc & WUF_CFGX_CRC16_MASK_));
3171 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 0x3000);
3172 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
3173 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
3174 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
3177 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3178 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3179 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3182 ret = lan78xx_write_reg(dev, WUCSR, temp_wucsr);
3184 /* when multiple WOL bits are set */
3185 if (hweight_long((unsigned long)wol) > 1) {
3186 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3187 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3188 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3190 ret = lan78xx_write_reg(dev, PMT_CTL, temp_pmt_ctl);
3193 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
3194 buf |= PMT_CTL_WUPS_MASK_;
3195 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
3197 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3198 buf |= MAC_RX_RXEN_;
3199 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3204 int lan78xx_suspend(struct usb_interface *intf, pm_message_t message)
3206 struct lan78xx_net *dev = usb_get_intfdata(intf);
3207 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
3213 event = message.event;
3215 if (!dev->suspend_count++) {
3216 spin_lock_irq(&dev->txq.lock);
3217 /* don't autosuspend while transmitting */
3218 if ((skb_queue_len(&dev->txq) ||
3219 skb_queue_len(&dev->txq_pend)) &&
3220 PMSG_IS_AUTO(message)) {
3221 spin_unlock_irq(&dev->txq.lock);
3225 set_bit(EVENT_DEV_ASLEEP, &dev->flags);
3226 spin_unlock_irq(&dev->txq.lock);
3230 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3231 buf &= ~MAC_TX_TXEN_;
3232 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3233 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3234 buf &= ~MAC_RX_RXEN_;
3235 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3237 /* empty out the rx and queues */
3238 netif_device_detach(dev->net);
3239 lan78xx_terminate_urbs(dev);
3240 usb_kill_urb(dev->urb_intr);
3243 netif_device_attach(dev->net);
3246 if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
3247 if (PMSG_IS_AUTO(message)) {
3248 /* auto suspend (selective suspend) */
3249 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3250 buf &= ~MAC_TX_TXEN_;
3251 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3252 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3253 buf &= ~MAC_RX_RXEN_;
3254 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3256 ret = lan78xx_write_reg(dev, WUCSR, 0);
3257 ret = lan78xx_write_reg(dev, WUCSR2, 0);
3258 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
3260 /* set goodframe wakeup */
3261 ret = lan78xx_read_reg(dev, WUCSR, &buf);
3263 buf |= WUCSR_RFE_WAKE_EN_;
3264 buf |= WUCSR_STORE_WAKE_;
3266 ret = lan78xx_write_reg(dev, WUCSR, buf);
3268 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
3270 buf &= ~PMT_CTL_RES_CLR_WKP_EN_;
3271 buf |= PMT_CTL_RES_CLR_WKP_STS_;
3273 buf |= PMT_CTL_PHY_WAKE_EN_;
3274 buf |= PMT_CTL_WOL_EN_;
3275 buf &= ~PMT_CTL_SUS_MODE_MASK_;
3276 buf |= PMT_CTL_SUS_MODE_3_;
3278 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
3280 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
3282 buf |= PMT_CTL_WUPS_MASK_;
3284 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
3286 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3287 buf |= MAC_RX_RXEN_;
3288 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3290 lan78xx_set_suspend(dev, pdata->wol);
3298 int lan78xx_resume(struct usb_interface *intf)
3300 struct lan78xx_net *dev = usb_get_intfdata(intf);
3301 struct sk_buff *skb;
3306 if (!--dev->suspend_count) {
3307 /* resume interrupt URBs */
3308 if (dev->urb_intr && test_bit(EVENT_DEV_OPEN, &dev->flags))
3309 usb_submit_urb(dev->urb_intr, GFP_NOIO);
3311 spin_lock_irq(&dev->txq.lock);
3312 while ((res = usb_get_from_anchor(&dev->deferred))) {
3313 skb = (struct sk_buff *)res->context;
3314 ret = usb_submit_urb(res, GFP_ATOMIC);
3316 dev_kfree_skb_any(skb);
3318 usb_autopm_put_interface_async(dev->intf);
3320 dev->net->trans_start = jiffies;
3321 lan78xx_queue_skb(&dev->txq, skb, tx_start);
3325 clear_bit(EVENT_DEV_ASLEEP, &dev->flags);
3326 spin_unlock_irq(&dev->txq.lock);
3328 if (test_bit(EVENT_DEV_OPEN, &dev->flags)) {
3329 if (!(skb_queue_len(&dev->txq) >= dev->tx_qlen))
3330 netif_start_queue(dev->net);
3331 tasklet_schedule(&dev->bh);
3335 ret = lan78xx_write_reg(dev, WUCSR2, 0);
3336 ret = lan78xx_write_reg(dev, WUCSR, 0);
3337 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
3339 ret = lan78xx_write_reg(dev, WUCSR2, WUCSR2_NS_RCD_ |
3341 WUCSR2_IPV6_TCPSYN_RCD_ |
3342 WUCSR2_IPV4_TCPSYN_RCD_);
3344 ret = lan78xx_write_reg(dev, WUCSR, WUCSR_EEE_TX_WAKE_ |
3345 WUCSR_EEE_RX_WAKE_ |
3347 WUCSR_RFE_WAKE_FR_ |
3352 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3353 buf |= MAC_TX_TXEN_;
3354 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3359 int lan78xx_reset_resume(struct usb_interface *intf)
3361 struct lan78xx_net *dev = usb_get_intfdata(intf);
3365 lan78xx_phy_init(dev);
3367 return lan78xx_resume(intf);
3370 static const struct usb_device_id products[] = {
3372 /* LAN7800 USB Gigabit Ethernet Device */
3373 USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7800_USB_PRODUCT_ID),
3376 /* LAN7850 USB Gigabit Ethernet Device */
3377 USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7850_USB_PRODUCT_ID),
3381 MODULE_DEVICE_TABLE(usb, products);
3383 static struct usb_driver lan78xx_driver = {
3384 .name = DRIVER_NAME,
3385 .id_table = products,
3386 .probe = lan78xx_probe,
3387 .disconnect = lan78xx_disconnect,
3388 .suspend = lan78xx_suspend,
3389 .resume = lan78xx_resume,
3390 .reset_resume = lan78xx_reset_resume,
3391 .supports_autosuspend = 1,
3392 .disable_hub_initiated_lpm = 1,
3395 module_usb_driver(lan78xx_driver);
3397 MODULE_AUTHOR(DRIVER_AUTHOR);
3398 MODULE_DESCRIPTION(DRIVER_DESC);
3399 MODULE_LICENSE("GPL");