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smsc95xx: strip ethernet fcs (crc) on receive path
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / usb / smsc95xx.c
blob89a91f8c22dea051009a1a2c513f28fa9a9b600f
1 /***************************************************************************
2 *
3 * Copyright (C) 2007-2008 SMSC
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 *
19 *****************************************************************************/
20
21 #include <linux/module.h>
22 #include <linux/kmod.h>
23 #include <linux/init.h>
24 #include <linux/netdevice.h>
25 #include <linux/etherdevice.h>
26 #include <linux/ethtool.h>
27 #include <linux/mii.h>
28 #include <linux/usb.h>
29 #include <linux/crc32.h>
30 #include <linux/usb/usbnet.h>
31 #include "smsc95xx.h"
32
33 #define SMSC_CHIPNAME "smsc95xx"
34 #define SMSC_DRIVER_VERSION "1.0.4"
35 #define HS_USB_PKT_SIZE (512)
36 #define FS_USB_PKT_SIZE (64)
37 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
38 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE)
39 #define DEFAULT_BULK_IN_DELAY (0x00002000)
40 #define MAX_SINGLE_PACKET_SIZE (2048)
41 #define LAN95XX_EEPROM_MAGIC (0x9500)
42 #define EEPROM_MAC_OFFSET (0x01)
43 #define DEFAULT_TX_CSUM_ENABLE (true)
44 #define DEFAULT_RX_CSUM_ENABLE (true)
45 #define SMSC95XX_INTERNAL_PHY_ID (1)
46 #define SMSC95XX_TX_OVERHEAD (8)
47 #define SMSC95XX_TX_OVERHEAD_CSUM (12)
48
49 struct smsc95xx_priv {
50 u32 mac_cr;
51 spinlock_t mac_cr_lock;
52 bool use_tx_csum;
53 bool use_rx_csum;
54 };
55
56 struct usb_context {
57 struct usb_ctrlrequest req;
58 struct usbnet *dev;
59 };
60
61 static int turbo_mode = true;
62 module_param(turbo_mode, bool, 0644);
63 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
64
65 static int smsc95xx_read_reg(struct usbnet *dev, u32 index, u32 *data)
66 {
67 u32 *buf = kmalloc(4, GFP_KERNEL);
68 int ret;
69
70 BUG_ON(!dev);
71
72 if (!buf)
73 return -ENOMEM;
74
75 ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
76 USB_VENDOR_REQUEST_READ_REGISTER,
77 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
78 00, index, buf, 4, USB_CTRL_GET_TIMEOUT);
79
80 if (unlikely(ret < 0))
81 devwarn(dev, "Failed to read register index 0x%08x", index);
82
83 le32_to_cpus(buf);
84 *data = *buf;
85 kfree(buf);
86
87 return ret;
88 }
89
90 static int smsc95xx_write_reg(struct usbnet *dev, u32 index, u32 data)
91 {
92 u32 *buf = kmalloc(4, GFP_KERNEL);
93 int ret;
94
95 BUG_ON(!dev);
96
97 if (!buf)
98 return -ENOMEM;
99
100 *buf = data;
101 cpu_to_le32s(buf);
102
103 ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
104 USB_VENDOR_REQUEST_WRITE_REGISTER,
105 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
106 00, index, buf, 4, USB_CTRL_SET_TIMEOUT);
107
108 if (unlikely(ret < 0))
109 devwarn(dev, "Failed to write register index 0x%08x", index);
110
111 kfree(buf);
112
113 return ret;
114 }
115
116 /* Loop until the read is completed with timeout
117 * called with phy_mutex held */
118 static int smsc95xx_phy_wait_not_busy(struct usbnet *dev)
119 {
120 unsigned long start_time = jiffies;
121 u32 val;
122
123 do {
124 smsc95xx_read_reg(dev, MII_ADDR, &val);
125 if (!(val & MII_BUSY_))
126 return 0;
127 } while (!time_after(jiffies, start_time + HZ));
128
129 return -EIO;
130 }
131
132 static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
133 {
134 struct usbnet *dev = netdev_priv(netdev);
135 u32 val, addr;
136
137 mutex_lock(&dev->phy_mutex);
138
139 /* confirm MII not busy */
140 if (smsc95xx_phy_wait_not_busy(dev)) {
141 devwarn(dev, "MII is busy in smsc95xx_mdio_read");
142 mutex_unlock(&dev->phy_mutex);
143 return -EIO;
144 }
145
146 /* set the address, index & direction (read from PHY) */
147 phy_id &= dev->mii.phy_id_mask;
148 idx &= dev->mii.reg_num_mask;
149 addr = (phy_id << 11) | (idx << 6) | MII_READ_;
150 smsc95xx_write_reg(dev, MII_ADDR, addr);
151
152 if (smsc95xx_phy_wait_not_busy(dev)) {
153 devwarn(dev, "Timed out reading MII reg %02X", idx);
154 mutex_unlock(&dev->phy_mutex);
155 return -EIO;
156 }
157
158 smsc95xx_read_reg(dev, MII_DATA, &val);
159
160 mutex_unlock(&dev->phy_mutex);
161
162 return (u16)(val & 0xFFFF);
163 }
164
165 static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
166 int regval)
167 {
168 struct usbnet *dev = netdev_priv(netdev);
169 u32 val, addr;
170
171 mutex_lock(&dev->phy_mutex);
172
173 /* confirm MII not busy */
174 if (smsc95xx_phy_wait_not_busy(dev)) {
175 devwarn(dev, "MII is busy in smsc95xx_mdio_write");
176 mutex_unlock(&dev->phy_mutex);
177 return;
178 }
179
180 val = regval;
181 smsc95xx_write_reg(dev, MII_DATA, val);
182
183 /* set the address, index & direction (write to PHY) */
184 phy_id &= dev->mii.phy_id_mask;
185 idx &= dev->mii.reg_num_mask;
186 addr = (phy_id << 11) | (idx << 6) | MII_WRITE_;
187 smsc95xx_write_reg(dev, MII_ADDR, addr);
188
189 if (smsc95xx_phy_wait_not_busy(dev))
190 devwarn(dev, "Timed out writing MII reg %02X", idx);
191
192 mutex_unlock(&dev->phy_mutex);
193 }
194
195 static int smsc95xx_wait_eeprom(struct usbnet *dev)
196 {
197 unsigned long start_time = jiffies;
198 u32 val;
199
200 do {
201 smsc95xx_read_reg(dev, E2P_CMD, &val);
202 if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_))
203 break;
204 udelay(40);
205 } while (!time_after(jiffies, start_time + HZ));
206
207 if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) {
208 devwarn(dev, "EEPROM read operation timeout");
209 return -EIO;
210 }
211
212 return 0;
213 }
214
215 static int smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev)
216 {
217 unsigned long start_time = jiffies;
218 u32 val;
219
220 do {
221 smsc95xx_read_reg(dev, E2P_CMD, &val);
222
223 if (!(val & E2P_CMD_LOADED_)) {
224 devwarn(dev, "No EEPROM present");
225 return -EIO;
226 }
227
228 if (!(val & E2P_CMD_BUSY_))
229 return 0;
230
231 udelay(40);
232 } while (!time_after(jiffies, start_time + HZ));
233
234 devwarn(dev, "EEPROM is busy");
235 return -EIO;
236 }
237
238 static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
239 u8 *data)
240 {
241 u32 val;
242 int i, ret;
243
244 BUG_ON(!dev);
245 BUG_ON(!data);
246
247 ret = smsc95xx_eeprom_confirm_not_busy(dev);
248 if (ret)
249 return ret;
250
251 for (i = 0; i < length; i++) {
252 val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_);
253 smsc95xx_write_reg(dev, E2P_CMD, val);
254
255 ret = smsc95xx_wait_eeprom(dev);
256 if (ret < 0)
257 return ret;
258
259 smsc95xx_read_reg(dev, E2P_DATA, &val);
260
261 data[i] = val & 0xFF;
262 offset++;
263 }
264
265 return 0;
266 }
267
268 static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
269 u8 *data)
270 {
271 u32 val;
272 int i, ret;
273
274 BUG_ON(!dev);
275 BUG_ON(!data);
276
277 ret = smsc95xx_eeprom_confirm_not_busy(dev);
278 if (ret)
279 return ret;
280
281 /* Issue write/erase enable command */
282 val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_;
283 smsc95xx_write_reg(dev, E2P_CMD, val);
284
285 ret = smsc95xx_wait_eeprom(dev);
286 if (ret < 0)
287 return ret;
288
289 for (i = 0; i < length; i++) {
290
291 /* Fill data register */
292 val = data[i];
293 smsc95xx_write_reg(dev, E2P_DATA, val);
294
295 /* Send "write" command */
296 val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_);
297 smsc95xx_write_reg(dev, E2P_CMD, val);
298
299 ret = smsc95xx_wait_eeprom(dev);
300 if (ret < 0)
301 return ret;
302
303 offset++;
304 }
305
306 return 0;
307 }
308
309 static void smsc95xx_async_cmd_callback(struct urb *urb)
310 {
311 struct usb_context *usb_context = urb->context;
312 struct usbnet *dev = usb_context->dev;
313 int status = urb->status;
314
315 if (status < 0)
316 devwarn(dev, "async callback failed with %d", status);
317
318 kfree(usb_context);
319 usb_free_urb(urb);
320 }
321
322 static int smsc95xx_write_reg_async(struct usbnet *dev, u16 index, u32 *data)
323 {
324 struct usb_context *usb_context;
325 int status;
326 struct urb *urb;
327 const u16 size = 4;
328
329 urb = usb_alloc_urb(0, GFP_ATOMIC);
330 if (!urb) {
331 devwarn(dev, "Error allocating URB");
332 return -ENOMEM;
333 }
334
335 usb_context = kmalloc(sizeof(struct usb_context), GFP_ATOMIC);
336 if (usb_context == NULL) {
337 devwarn(dev, "Error allocating control msg");
338 usb_free_urb(urb);
339 return -ENOMEM;
340 }
341
342 usb_context->req.bRequestType =
343 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
344 usb_context->req.bRequest = USB_VENDOR_REQUEST_WRITE_REGISTER;
345 usb_context->req.wValue = 00;
346 usb_context->req.wIndex = cpu_to_le16(index);
347 usb_context->req.wLength = cpu_to_le16(size);
348
349 usb_fill_control_urb(urb, dev->udev, usb_sndctrlpipe(dev->udev, 0),
350 (void *)&usb_context->req, data, size,
351 smsc95xx_async_cmd_callback,
352 (void *)usb_context);
353
354 status = usb_submit_urb(urb, GFP_ATOMIC);
355 if (status < 0) {
356 devwarn(dev, "Error submitting control msg, sts=%d", status);
357 kfree(usb_context);
358 usb_free_urb(urb);
359 }
360
361 return status;
362 }
363
364 /* returns hash bit number for given MAC address
365 * example:
366 * 01 00 5E 00 00 01 -> returns bit number 31 */
367 static unsigned int smsc95xx_hash(char addr[ETH_ALEN])
368 {
369 return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f;
370 }
371
372 static void smsc95xx_set_multicast(struct net_device *netdev)
373 {
374 struct usbnet *dev = netdev_priv(netdev);
375 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
376 u32 hash_hi = 0;
377 u32 hash_lo = 0;
378 unsigned long flags;
379
380 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
381
382 if (dev->net->flags & IFF_PROMISC) {
383 if (netif_msg_drv(dev))
384 devdbg(dev, "promiscuous mode enabled");
385 pdata->mac_cr |= MAC_CR_PRMS_;
386 pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
387 } else if (dev->net->flags & IFF_ALLMULTI) {
388 if (netif_msg_drv(dev))
389 devdbg(dev, "receive all multicast enabled");
390 pdata->mac_cr |= MAC_CR_MCPAS_;
391 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_);
392 } else if (dev->net->mc_count > 0) {
393 struct dev_mc_list *mc_list = dev->net->mc_list;
394 int count = 0;
395
396 pdata->mac_cr |= MAC_CR_HPFILT_;
397 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_);
398
399 while (mc_list) {
400 count++;
401 if (mc_list->dmi_addrlen == ETH_ALEN) {
402 u32 bitnum = smsc95xx_hash(mc_list->dmi_addr);
403 u32 mask = 0x01 << (bitnum & 0x1F);
404 if (bitnum & 0x20)
405 hash_hi |= mask;
406 else
407 hash_lo |= mask;
408 } else {
409 devwarn(dev, "dmi_addrlen != 6");
410 }
411 mc_list = mc_list->next;
412 }
413
414 if (count != ((u32)dev->net->mc_count))
415 devwarn(dev, "mc_count != dev->mc_count");
416
417 if (netif_msg_drv(dev))
418 devdbg(dev, "HASHH=0x%08X, HASHL=0x%08X", hash_hi,
419 hash_lo);
420 } else {
421 if (netif_msg_drv(dev))
422 devdbg(dev, "receive own packets only");
423 pdata->mac_cr &=
424 ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
425 }
426
427 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
428
429 /* Initiate async writes, as we can't wait for completion here */
430 smsc95xx_write_reg_async(dev, HASHH, &hash_hi);
431 smsc95xx_write_reg_async(dev, HASHL, &hash_lo);
432 smsc95xx_write_reg_async(dev, MAC_CR, &pdata->mac_cr);
433 }
434
435 static void smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex,
436 u16 lcladv, u16 rmtadv)
437 {
438 u32 flow, afc_cfg = 0;
439
440 int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg);
441 if (ret < 0) {
442 devwarn(dev, "error reading AFC_CFG");
443 return;
444 }
445
446 if (duplex == DUPLEX_FULL) {
447 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
448
449 if (cap & FLOW_CTRL_RX)
450 flow = 0xFFFF0002;
451 else
452 flow = 0;
453
454 if (cap & FLOW_CTRL_TX)
455 afc_cfg |= 0xF;
456 else
457 afc_cfg &= ~0xF;
458
459 if (netif_msg_link(dev))
460 devdbg(dev, "rx pause %s, tx pause %s",
461 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
462 (cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
463 } else {
464 if (netif_msg_link(dev))
465 devdbg(dev, "half duplex");
466 flow = 0;
467 afc_cfg |= 0xF;
468 }
469
470 smsc95xx_write_reg(dev, FLOW, flow);
471 smsc95xx_write_reg(dev, AFC_CFG, afc_cfg);
472 }
473
474 static int smsc95xx_link_reset(struct usbnet *dev)
475 {
476 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
477 struct mii_if_info *mii = &dev->mii;
478 struct ethtool_cmd ecmd;
479 unsigned long flags;
480 u16 lcladv, rmtadv;
481 u32 intdata;
482
483 /* clear interrupt status */
484 smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC);
485 intdata = 0xFFFFFFFF;
486 smsc95xx_write_reg(dev, INT_STS, intdata);
487
488 mii_check_media(mii, 1, 1);
489 mii_ethtool_gset(&dev->mii, &ecmd);
490 lcladv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
491 rmtadv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
492
493 if (netif_msg_link(dev))
494 devdbg(dev, "speed: %d duplex: %d lcladv: %04x rmtadv: %04x",
495 ecmd.speed, ecmd.duplex, lcladv, rmtadv);
496
497 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
498 if (ecmd.duplex != DUPLEX_FULL) {
499 pdata->mac_cr &= ~MAC_CR_FDPX_;
500 pdata->mac_cr |= MAC_CR_RCVOWN_;
501 } else {
502 pdata->mac_cr &= ~MAC_CR_RCVOWN_;
503 pdata->mac_cr |= MAC_CR_FDPX_;
504 }
505 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
506
507 smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
508
509 smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
510
511 return 0;
512 }
513
514 static void smsc95xx_status(struct usbnet *dev, struct urb *urb)
515 {
516 u32 intdata;
517
518 if (urb->actual_length != 4) {
519 devwarn(dev, "unexpected urb length %d", urb->actual_length);
520 return;
521 }
522
523 memcpy(&intdata, urb->transfer_buffer, 4);
524 le32_to_cpus(&intdata);
525
526 if (netif_msg_link(dev))
527 devdbg(dev, "intdata: 0x%08X", intdata);
528
529 if (intdata & INT_ENP_PHY_INT_)
530 usbnet_defer_kevent(dev, EVENT_LINK_RESET);
531 else
532 devwarn(dev, "unexpected interrupt, intdata=0x%08X", intdata);
533 }
534
535 /* Enable or disable Tx & Rx checksum offload engines */
536 static int smsc95xx_set_csums(struct usbnet *dev)
537 {
538 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
539 u32 read_buf;
540 int ret = smsc95xx_read_reg(dev, COE_CR, &read_buf);
541 if (ret < 0) {
542 devwarn(dev, "Failed to read COE_CR: %d", ret);
543 return ret;
544 }
545
546 if (pdata->use_tx_csum)
547 read_buf |= Tx_COE_EN_;
548 else
549 read_buf &= ~Tx_COE_EN_;
550
551 if (pdata->use_rx_csum)
552 read_buf |= Rx_COE_EN_;
553 else
554 read_buf &= ~Rx_COE_EN_;
555
556 ret = smsc95xx_write_reg(dev, COE_CR, read_buf);
557 if (ret < 0) {
558 devwarn(dev, "Failed to write COE_CR: %d", ret);
559 return ret;
560 }
561
562 if (netif_msg_hw(dev))
563 devdbg(dev, "COE_CR = 0x%08x", read_buf);
564 return 0;
565 }
566
567 static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net)
568 {
569 return MAX_EEPROM_SIZE;
570 }
571
572 static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev,
573 struct ethtool_eeprom *ee, u8 *data)
574 {
575 struct usbnet *dev = netdev_priv(netdev);
576
577 ee->magic = LAN95XX_EEPROM_MAGIC;
578
579 return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data);
580 }
581
582 static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev,
583 struct ethtool_eeprom *ee, u8 *data)
584 {
585 struct usbnet *dev = netdev_priv(netdev);
586
587 if (ee->magic != LAN95XX_EEPROM_MAGIC) {
588 devwarn(dev, "EEPROM: magic value mismatch, magic = 0x%x",
589 ee->magic);
590 return -EINVAL;
591 }
592
593 return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data);
594 }
595
596 static u32 smsc95xx_ethtool_get_rx_csum(struct net_device *netdev)
597 {
598 struct usbnet *dev = netdev_priv(netdev);
599 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
600
601 return pdata->use_rx_csum;
602 }
603
604 static int smsc95xx_ethtool_set_rx_csum(struct net_device *netdev, u32 val)
605 {
606 struct usbnet *dev = netdev_priv(netdev);
607 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
608
609 pdata->use_rx_csum = !!val;
610
611 return smsc95xx_set_csums(dev);
612 }
613
614 static u32 smsc95xx_ethtool_get_tx_csum(struct net_device *netdev)
615 {
616 struct usbnet *dev = netdev_priv(netdev);
617 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
618
619 return pdata->use_tx_csum;
620 }
621
622 static int smsc95xx_ethtool_set_tx_csum(struct net_device *netdev, u32 val)
623 {
624 struct usbnet *dev = netdev_priv(netdev);
625 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
626
627 pdata->use_tx_csum = !!val;
628
629 ethtool_op_set_tx_hw_csum(netdev, pdata->use_tx_csum);
630 return smsc95xx_set_csums(dev);
631 }
632
633 static struct ethtool_ops smsc95xx_ethtool_ops = {
634 .get_link = usbnet_get_link,
635 .nway_reset = usbnet_nway_reset,
636 .get_drvinfo = usbnet_get_drvinfo,
637 .get_msglevel = usbnet_get_msglevel,
638 .set_msglevel = usbnet_set_msglevel,
639 .get_settings = usbnet_get_settings,
640 .set_settings = usbnet_set_settings,
641 .get_eeprom_len = smsc95xx_ethtool_get_eeprom_len,
642 .get_eeprom = smsc95xx_ethtool_get_eeprom,
643 .set_eeprom = smsc95xx_ethtool_set_eeprom,
644 .get_tx_csum = smsc95xx_ethtool_get_tx_csum,
645 .set_tx_csum = smsc95xx_ethtool_set_tx_csum,
646 .get_rx_csum = smsc95xx_ethtool_get_rx_csum,
647 .set_rx_csum = smsc95xx_ethtool_set_rx_csum,
648 };
649
650 static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
651 {
652 struct usbnet *dev = netdev_priv(netdev);
653
654 if (!netif_running(netdev))
655 return -EINVAL;
656
657 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
658 }
659
660 static void smsc95xx_init_mac_address(struct usbnet *dev)
661 {
662 /* try reading mac address from EEPROM */
663 if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
664 dev->net->dev_addr) == 0) {
665 if (is_valid_ether_addr(dev->net->dev_addr)) {
666 /* eeprom values are valid so use them */
667 if (netif_msg_ifup(dev))
668 devdbg(dev, "MAC address read from EEPROM");
669 return;
670 }
671 }
672
673 /* no eeprom, or eeprom values are invalid. generate random MAC */
674 random_ether_addr(dev->net->dev_addr);
675 if (netif_msg_ifup(dev))
676 devdbg(dev, "MAC address set to random_ether_addr");
677 }
678
679 static int smsc95xx_set_mac_address(struct usbnet *dev)
680 {
681 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
682 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
683 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
684 int ret;
685
686 ret = smsc95xx_write_reg(dev, ADDRL, addr_lo);
687 if (ret < 0) {
688 devwarn(dev, "Failed to write ADDRL: %d", ret);
689 return ret;
690 }
691
692 ret = smsc95xx_write_reg(dev, ADDRH, addr_hi);
693 if (ret < 0) {
694 devwarn(dev, "Failed to write ADDRH: %d", ret);
695 return ret;
696 }
697
698 return 0;
699 }
700
701 /* starts the TX path */
702 static void smsc95xx_start_tx_path(struct usbnet *dev)
703 {
704 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
705 unsigned long flags;
706 u32 reg_val;
707
708 /* Enable Tx at MAC */
709 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
710 pdata->mac_cr |= MAC_CR_TXEN_;
711 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
712
713 smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
714
715 /* Enable Tx at SCSRs */
716 reg_val = TX_CFG_ON_;
717 smsc95xx_write_reg(dev, TX_CFG, reg_val);
718 }
719
720 /* Starts the Receive path */
721 static void smsc95xx_start_rx_path(struct usbnet *dev)
722 {
723 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
724 unsigned long flags;
725
726 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
727 pdata->mac_cr |= MAC_CR_RXEN_;
728 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
729
730 smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
731 }
732
733 static int smsc95xx_phy_initialize(struct usbnet *dev)
734 {
735 /* Initialize MII structure */
736 dev->mii.dev = dev->net;
737 dev->mii.mdio_read = smsc95xx_mdio_read;
738 dev->mii.mdio_write = smsc95xx_mdio_write;
739 dev->mii.phy_id_mask = 0x1f;
740 dev->mii.reg_num_mask = 0x1f;
741 dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID;
742
743 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
744 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
745 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
746 ADVERTISE_PAUSE_ASYM);
747
748 /* read to clear */
749 smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
750
751 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
752 PHY_INT_MASK_DEFAULT_);
753 mii_nway_restart(&dev->mii);
754
755 if (netif_msg_ifup(dev))
756 devdbg(dev, "phy initialised succesfully");
757 return 0;
758 }
759
760 static int smsc95xx_reset(struct usbnet *dev)
761 {
762 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
763 struct net_device *netdev = dev->net;
764 u32 read_buf, write_buf, burst_cap;
765 int ret = 0, timeout;
766
767 if (netif_msg_ifup(dev))
768 devdbg(dev, "entering smsc95xx_reset");
769
770 write_buf = HW_CFG_LRST_;
771 ret = smsc95xx_write_reg(dev, HW_CFG, write_buf);
772 if (ret < 0) {
773 devwarn(dev, "Failed to write HW_CFG_LRST_ bit in HW_CFG "
774 "register, ret = %d", ret);
775 return ret;
776 }
777
778 timeout = 0;
779 do {
780 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
781 if (ret < 0) {
782 devwarn(dev, "Failed to read HW_CFG: %d", ret);
783 return ret;
784 }
785 msleep(10);
786 timeout++;
787 } while ((read_buf & HW_CFG_LRST_) && (timeout < 100));
788
789 if (timeout >= 100) {
790 devwarn(dev, "timeout waiting for completion of Lite Reset");
791 return ret;
792 }
793
794 write_buf = PM_CTL_PHY_RST_;
795 ret = smsc95xx_write_reg(dev, PM_CTRL, write_buf);
796 if (ret < 0) {
797 devwarn(dev, "Failed to write PM_CTRL: %d", ret);
798 return ret;
799 }
800
801 timeout = 0;
802 do {
803 ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf);
804 if (ret < 0) {
805 devwarn(dev, "Failed to read PM_CTRL: %d", ret);
806 return ret;
807 }
808 msleep(10);
809 timeout++;
810 } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100));
811
812 if (timeout >= 100) {
813 devwarn(dev, "timeout waiting for PHY Reset");
814 return ret;
815 }
816
817 smsc95xx_init_mac_address(dev);
818
819 ret = smsc95xx_set_mac_address(dev);
820 if (ret < 0)
821 return ret;
822
823 if (netif_msg_ifup(dev))
824 devdbg(dev, "MAC Address: %pM", dev->net->dev_addr);
825
826 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
827 if (ret < 0) {
828 devwarn(dev, "Failed to read HW_CFG: %d", ret);
829 return ret;
830 }
831
832 if (netif_msg_ifup(dev))
833 devdbg(dev, "Read Value from HW_CFG : 0x%08x", read_buf);
834
835 read_buf |= HW_CFG_BIR_;
836
837 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
838 if (ret < 0) {
839 devwarn(dev, "Failed to write HW_CFG_BIR_ bit in HW_CFG "
840 "register, ret = %d", ret);
841 return ret;
842 }
843
844 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
845 if (ret < 0) {
846 devwarn(dev, "Failed to read HW_CFG: %d", ret);
847 return ret;
848 }
849 if (netif_msg_ifup(dev))
850 devdbg(dev, "Read Value from HW_CFG after writing "
851 "HW_CFG_BIR_: 0x%08x", read_buf);
852
853 if (!turbo_mode) {
854 burst_cap = 0;
855 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
856 } else if (dev->udev->speed == USB_SPEED_HIGH) {
857 burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
858 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
859 } else {
860 burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
861 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
862 }
863
864 if (netif_msg_ifup(dev))
865 devdbg(dev, "rx_urb_size=%ld", (ulong)dev->rx_urb_size);
866
867 ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap);
868 if (ret < 0) {
869 devwarn(dev, "Failed to write BURST_CAP: %d", ret);
870 return ret;
871 }
872
873 ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf);
874 if (ret < 0) {
875 devwarn(dev, "Failed to read BURST_CAP: %d", ret);
876 return ret;
877 }
878 if (netif_msg_ifup(dev))
879 devdbg(dev, "Read Value from BURST_CAP after writing: 0x%08x",
880 read_buf);
881
882 read_buf = DEFAULT_BULK_IN_DELAY;
883 ret = smsc95xx_write_reg(dev, BULK_IN_DLY, read_buf);
884 if (ret < 0) {
885 devwarn(dev, "ret = %d", ret);
886 return ret;
887 }
888
889 ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf);
890 if (ret < 0) {
891 devwarn(dev, "Failed to read BULK_IN_DLY: %d", ret);
892 return ret;
893 }
894 if (netif_msg_ifup(dev))
895 devdbg(dev, "Read Value from BULK_IN_DLY after writing: "
896 "0x%08x", read_buf);
897
898 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
899 if (ret < 0) {
900 devwarn(dev, "Failed to read HW_CFG: %d", ret);
901 return ret;
902 }
903 if (netif_msg_ifup(dev))
904 devdbg(dev, "Read Value from HW_CFG: 0x%08x", read_buf);
905
906 if (turbo_mode)
907 read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_);
908
909 read_buf &= ~HW_CFG_RXDOFF_;
910
911 /* set Rx data offset=2, Make IP header aligns on word boundary. */
912 read_buf |= NET_IP_ALIGN << 9;
913
914 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
915 if (ret < 0) {
916 devwarn(dev, "Failed to write HW_CFG register, ret=%d", ret);
917 return ret;
918 }
919
920 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
921 if (ret < 0) {
922 devwarn(dev, "Failed to read HW_CFG: %d", ret);
923 return ret;
924 }
925 if (netif_msg_ifup(dev))
926 devdbg(dev, "Read Value from HW_CFG after writing: 0x%08x",
927 read_buf);
928
929 write_buf = 0xFFFFFFFF;
930 ret = smsc95xx_write_reg(dev, INT_STS, write_buf);
931 if (ret < 0) {
932 devwarn(dev, "Failed to write INT_STS register, ret=%d", ret);
933 return ret;
934 }
935
936 ret = smsc95xx_read_reg(dev, ID_REV, &read_buf);
937 if (ret < 0) {
938 devwarn(dev, "Failed to read ID_REV: %d", ret);
939 return ret;
940 }
941 if (netif_msg_ifup(dev))
942 devdbg(dev, "ID_REV = 0x%08x", read_buf);
943
944 /* Configure GPIO pins as LED outputs */
945 write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED |
946 LED_GPIO_CFG_FDX_LED;
947 ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf);
948 if (ret < 0) {
949 devwarn(dev, "Failed to write LED_GPIO_CFG register, ret=%d",
950 ret);
951 return ret;
952 }
953
954 /* Init Tx */
955 write_buf = 0;
956 ret = smsc95xx_write_reg(dev, FLOW, write_buf);
957 if (ret < 0) {
958 devwarn(dev, "Failed to write FLOW: %d", ret);
959 return ret;
960 }
961
962 read_buf = AFC_CFG_DEFAULT;
963 ret = smsc95xx_write_reg(dev, AFC_CFG, read_buf);
964 if (ret < 0) {
965 devwarn(dev, "Failed to write AFC_CFG: %d", ret);
966 return ret;
967 }
968
969 /* Don't need mac_cr_lock during initialisation */
970 ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr);
971 if (ret < 0) {
972 devwarn(dev, "Failed to read MAC_CR: %d", ret);
973 return ret;
974 }
975
976 /* Init Rx */
977 /* Set Vlan */
978 write_buf = (u32)ETH_P_8021Q;
979 ret = smsc95xx_write_reg(dev, VLAN1, write_buf);
980 if (ret < 0) {
981 devwarn(dev, "Failed to write VAN1: %d", ret);
982 return ret;
983 }
984
985 /* Enable or disable checksum offload engines */
986 ethtool_op_set_tx_hw_csum(netdev, pdata->use_tx_csum);
987 ret = smsc95xx_set_csums(dev);
988 if (ret < 0) {
989 devwarn(dev, "Failed to set csum offload: %d", ret);
990 return ret;
991 }
992
993 smsc95xx_set_multicast(dev->net);
994
995 if (smsc95xx_phy_initialize(dev) < 0)
996 return -EIO;
997
998 ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf);
999 if (ret < 0) {
1000 devwarn(dev, "Failed to read INT_EP_CTL: %d", ret);
1001 return ret;
1002 }
1003
1004 /* enable PHY interrupts */
1005 read_buf |= INT_EP_CTL_PHY_INT_;
1006
1007 ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf);
1008 if (ret < 0) {
1009 devwarn(dev, "Failed to write INT_EP_CTL: %d", ret);
1010 return ret;
1011 }
1012
1013 smsc95xx_start_tx_path(dev);
1014 smsc95xx_start_rx_path(dev);
1015
1016 if (netif_msg_ifup(dev))
1017 devdbg(dev, "smsc95xx_reset, return 0");
1018 return 0;
1019 }
1020
1021 static const struct net_device_ops smsc95xx_netdev_ops = {
1022 .ndo_open = usbnet_open,
1023 .ndo_stop = usbnet_stop,
1024 .ndo_start_xmit = usbnet_start_xmit,
1025 .ndo_tx_timeout = usbnet_tx_timeout,
1026 .ndo_change_mtu = usbnet_change_mtu,
1027 .ndo_set_mac_address = eth_mac_addr,
1028 .ndo_validate_addr = eth_validate_addr,
1029 .ndo_do_ioctl = smsc95xx_ioctl,
1030 .ndo_set_multicast_list = smsc95xx_set_multicast,
1031 };
1032
1033 static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
1034 {
1035 struct smsc95xx_priv *pdata = NULL;
1036 int ret;
1037
1038 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
1039
1040 ret = usbnet_get_endpoints(dev, intf);
1041 if (ret < 0) {
1042 devwarn(dev, "usbnet_get_endpoints failed: %d", ret);
1043 return ret;
1044 }
1045
1046 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv),
1047 GFP_KERNEL);
1048
1049 pdata = (struct smsc95xx_priv *)(dev->data[0]);
1050 if (!pdata) {
1051 devwarn(dev, "Unable to allocate struct smsc95xx_priv");
1052 return -ENOMEM;
1053 }
1054
1055 spin_lock_init(&pdata->mac_cr_lock);
1056
1057 pdata->use_tx_csum = DEFAULT_TX_CSUM_ENABLE;
1058 pdata->use_rx_csum = DEFAULT_RX_CSUM_ENABLE;
1059
1060 /* Init all registers */
1061 ret = smsc95xx_reset(dev);
1062
1063 dev->net->netdev_ops = &smsc95xx_netdev_ops;
1064 dev->net->ethtool_ops = &smsc95xx_ethtool_ops;
1065 dev->net->flags |= IFF_MULTICAST;
1066 dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD;
1067 return 0;
1068 }
1069
1070 static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf)
1071 {
1072 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1073 if (pdata) {
1074 if (netif_msg_ifdown(dev))
1075 devdbg(dev, "free pdata");
1076 kfree(pdata);
1077 pdata = NULL;
1078 dev->data[0] = 0;
1079 }
1080 }
1081
1082 static void smsc95xx_rx_csum_offload(struct sk_buff *skb)
1083 {
1084 skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2);
1085 skb->ip_summed = CHECKSUM_COMPLETE;
1086 skb_trim(skb, skb->len - 2);
1087 }
1088
1089 static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
1090 {
1091 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1092
1093 while (skb->len > 0) {
1094 u32 header, align_count;
1095 struct sk_buff *ax_skb;
1096 unsigned char *packet;
1097 u16 size;
1098
1099 memcpy(&header, skb->data, sizeof(header));
1100 le32_to_cpus(&header);
1101 skb_pull(skb, 4 + NET_IP_ALIGN);
1102 packet = skb->data;
1103
1104 /* get the packet length */
1105 size = (u16)((header & RX_STS_FL_) >> 16);
1106 align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4;
1107
1108 if (unlikely(header & RX_STS_ES_)) {
1109 if (netif_msg_rx_err(dev))
1110 devdbg(dev, "Error header=0x%08x", header);
1111 dev->stats.rx_errors++;
1112 dev->stats.rx_dropped++;
1113
1114 if (header & RX_STS_CRC_) {
1115 dev->stats.rx_crc_errors++;
1116 } else {
1117 if (header & (RX_STS_TL_ | RX_STS_RF_))
1118 dev->stats.rx_frame_errors++;
1119
1120 if ((header & RX_STS_LE_) &&
1121 (!(header & RX_STS_FT_)))
1122 dev->stats.rx_length_errors++;
1123 }
1124 } else {
1125 /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */
1126 if (unlikely(size > (ETH_FRAME_LEN + 12))) {
1127 if (netif_msg_rx_err(dev))
1128 devdbg(dev, "size err header=0x%08x",
1129 header);
1130 return 0;
1131 }
1132
1133 /* last frame in this batch */
1134 if (skb->len == size) {
1135 if (pdata->use_rx_csum)
1136 smsc95xx_rx_csum_offload(skb);
1137 skb_trim(skb, skb->len - 4); /* remove fcs */
1138 skb->truesize = size + sizeof(struct sk_buff);
1139
1140 return 1;
1141 }
1142
1143 ax_skb = skb_clone(skb, GFP_ATOMIC);
1144 if (unlikely(!ax_skb)) {
1145 devwarn(dev, "Error allocating skb");
1146 return 0;
1147 }
1148
1149 ax_skb->len = size;
1150 ax_skb->data = packet;
1151 skb_set_tail_pointer(ax_skb, size);
1152
1153 if (pdata->use_rx_csum)
1154 smsc95xx_rx_csum_offload(ax_skb);
1155 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
1156 ax_skb->truesize = size + sizeof(struct sk_buff);
1157
1158 usbnet_skb_return(dev, ax_skb);
1159 }
1160
1161 skb_pull(skb, size);
1162
1163 /* padding bytes before the next frame starts */
1164 if (skb->len)
1165 skb_pull(skb, align_count);
1166 }
1167
1168 if (unlikely(skb->len < 0)) {
1169 devwarn(dev, "invalid rx length<0 %d", skb->len);
1170 return 0;
1171 }
1172
1173 return 1;
1174 }
1175
1176 static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb)
1177 {
1178 int len = skb->data - skb->head;
1179 u16 high_16 = (u16)(skb->csum_offset + skb->csum_start - len);
1180 u16 low_16 = (u16)(skb->csum_start - len);
1181 return (high_16 << 16) | low_16;
1182 }
1183
1184 static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev,
1185 struct sk_buff *skb, gfp_t flags)
1186 {
1187 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1188 bool csum = pdata->use_tx_csum && (skb->ip_summed == CHECKSUM_PARTIAL);
1189 int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD;
1190 u32 tx_cmd_a, tx_cmd_b;
1191
1192 /* We do not advertise SG, so skbs should be already linearized */
1193 BUG_ON(skb_shinfo(skb)->nr_frags);
1194
1195 if (skb_headroom(skb) < overhead) {
1196 struct sk_buff *skb2 = skb_copy_expand(skb,
1197 overhead, 0, flags);
1198 dev_kfree_skb_any(skb);
1199 skb = skb2;
1200 if (!skb)
1201 return NULL;
1202 }
1203
1204 if (csum) {
1205 u32 csum_preamble = smsc95xx_calc_csum_preamble(skb);
1206 skb_push(skb, 4);
1207 memcpy(skb->data, &csum_preamble, 4);
1208 }
1209
1210 skb_push(skb, 4);
1211 tx_cmd_b = (u32)(skb->len - 4);
1212 if (csum)
1213 tx_cmd_b |= TX_CMD_B_CSUM_ENABLE;
1214 cpu_to_le32s(&tx_cmd_b);
1215 memcpy(skb->data, &tx_cmd_b, 4);
1216
1217 skb_push(skb, 4);
1218 tx_cmd_a = (u32)(skb->len - 8) | TX_CMD_A_FIRST_SEG_ |
1219 TX_CMD_A_LAST_SEG_;
1220 cpu_to_le32s(&tx_cmd_a);
1221 memcpy(skb->data, &tx_cmd_a, 4);
1222
1223 return skb;
1224 }
1225
1226 static const struct driver_info smsc95xx_info = {
1227 .description = "smsc95xx USB 2.0 Ethernet",
1228 .bind = smsc95xx_bind,
1229 .unbind = smsc95xx_unbind,
1230 .link_reset = smsc95xx_link_reset,
1231 .reset = smsc95xx_reset,
1232 .rx_fixup = smsc95xx_rx_fixup,
1233 .tx_fixup = smsc95xx_tx_fixup,
1234 .status = smsc95xx_status,
1235 .flags = FLAG_ETHER,
1236 };
1237
1238 static const struct usb_device_id products[] = {
1239 {
1240 /* SMSC9500 USB Ethernet Device */
1241 USB_DEVICE(0x0424, 0x9500),
1242 .driver_info = (unsigned long) &smsc95xx_info,
1243 },
1244 {
1245 /* SMSC9512/9514 USB Hub & Ethernet Device */
1246 USB_DEVICE(0x0424, 0xec00),
1247 .driver_info = (unsigned long) &smsc95xx_info,
1248 },
1249 { }, /* END */
1250 };
1251 MODULE_DEVICE_TABLE(usb, products);
1252
1253 static struct usb_driver smsc95xx_driver = {
1254 .name = "smsc95xx",
1255 .id_table = products,
1256 .probe = usbnet_probe,
1257 .suspend = usbnet_suspend,
1258 .resume = usbnet_resume,
1259 .disconnect = usbnet_disconnect,
1260 };
1261
1262 static int __init smsc95xx_init(void)
1263 {
1264 return usb_register(&smsc95xx_driver);
1265 }
1266 module_init(smsc95xx_init);
1267
1268 static void __exit smsc95xx_exit(void)
1269 {
1270 usb_deregister(&smsc95xx_driver);
1271 }
1272 module_exit(smsc95xx_exit);
1273
1274 MODULE_AUTHOR("Nancy Lin");
1275 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@smsc.com>");
1276 MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices");
1277 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree