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Merge branch 'for-3.11' of git://linux-nfs.org/~bfields/linux
[linux-2.6.git] / drivers / net / usb / smsc95xx.c
blob3f38ba868f6182152093e8efad0a864439c5cef0
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/bitrev.h>
30 #include <linux/crc16.h>
31 #include <linux/crc32.h>
32 #include <linux/usb/usbnet.h>
33 #include <linux/slab.h>
34 #include "smsc95xx.h"
35
36 #define SMSC_CHIPNAME "smsc95xx"
37 #define SMSC_DRIVER_VERSION "1.0.4"
38 #define HS_USB_PKT_SIZE (512)
39 #define FS_USB_PKT_SIZE (64)
40 #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
41 #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE)
42 #define DEFAULT_BULK_IN_DELAY (0x00002000)
43 #define MAX_SINGLE_PACKET_SIZE (2048)
44 #define LAN95XX_EEPROM_MAGIC (0x9500)
45 #define EEPROM_MAC_OFFSET (0x01)
46 #define DEFAULT_TX_CSUM_ENABLE (true)
47 #define DEFAULT_RX_CSUM_ENABLE (true)
48 #define SMSC95XX_INTERNAL_PHY_ID (1)
49 #define SMSC95XX_TX_OVERHEAD (8)
50 #define SMSC95XX_TX_OVERHEAD_CSUM (12)
51 #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \
52 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
53
54 #define FEATURE_8_WAKEUP_FILTERS (0x01)
55 #define FEATURE_PHY_NLP_CROSSOVER (0x02)
56 #define FEATURE_REMOTE_WAKEUP (0x04)
57
58 #define SUSPEND_SUSPEND0 (0x01)
59 #define SUSPEND_SUSPEND1 (0x02)
60 #define SUSPEND_SUSPEND2 (0x04)
61 #define SUSPEND_SUSPEND3 (0x08)
62 #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
63 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
64
65 struct smsc95xx_priv {
66 u32 mac_cr;
67 u32 hash_hi;
68 u32 hash_lo;
69 u32 wolopts;
70 spinlock_t mac_cr_lock;
71 u8 features;
72 u8 suspend_flags;
73 };
74
75 static bool turbo_mode = true;
76 module_param(turbo_mode, bool, 0644);
77 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
78
79 static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
80 u32 *data, int in_pm)
81 {
82 u32 buf;
83 int ret;
84 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
85
86 BUG_ON(!dev);
87
88 if (!in_pm)
89 fn = usbnet_read_cmd;
90 else
91 fn = usbnet_read_cmd_nopm;
92
93 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
94 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
95 0, index, &buf, 4);
96 if (unlikely(ret < 0))
97 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
98 index, ret);
99
100 le32_to_cpus(&buf);
101 *data = buf;
102
103 return ret;
104 }
105
106 static int __must_check __smsc95xx_write_reg(struct usbnet *dev, u32 index,
107 u32 data, int in_pm)
108 {
109 u32 buf;
110 int ret;
111 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
112
113 BUG_ON(!dev);
114
115 if (!in_pm)
116 fn = usbnet_write_cmd;
117 else
118 fn = usbnet_write_cmd_nopm;
119
120 buf = data;
121 cpu_to_le32s(&buf);
122
123 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT
124 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
125 0, index, &buf, 4);
126 if (unlikely(ret < 0))
127 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n",
128 index, ret);
129
130 return ret;
131 }
132
133 static int __must_check smsc95xx_read_reg_nopm(struct usbnet *dev, u32 index,
134 u32 *data)
135 {
136 return __smsc95xx_read_reg(dev, index, data, 1);
137 }
138
139 static int __must_check smsc95xx_write_reg_nopm(struct usbnet *dev, u32 index,
140 u32 data)
141 {
142 return __smsc95xx_write_reg(dev, index, data, 1);
143 }
144
145 static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index,
146 u32 *data)
147 {
148 return __smsc95xx_read_reg(dev, index, data, 0);
149 }
150
151 static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index,
152 u32 data)
153 {
154 return __smsc95xx_write_reg(dev, index, data, 0);
155 }
156
157 /* Loop until the read is completed with timeout
158 * called with phy_mutex held */
159 static int __must_check __smsc95xx_phy_wait_not_busy(struct usbnet *dev,
160 int in_pm)
161 {
162 unsigned long start_time = jiffies;
163 u32 val;
164 int ret;
165
166 do {
167 ret = __smsc95xx_read_reg(dev, MII_ADDR, &val, in_pm);
168 if (ret < 0) {
169 netdev_warn(dev->net, "Error reading MII_ACCESS\n");
170 return ret;
171 }
172
173 if (!(val & MII_BUSY_))
174 return 0;
175 } while (!time_after(jiffies, start_time + HZ));
176
177 return -EIO;
178 }
179
180 static int __smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx,
181 int in_pm)
182 {
183 struct usbnet *dev = netdev_priv(netdev);
184 u32 val, addr;
185 int ret;
186
187 mutex_lock(&dev->phy_mutex);
188
189 /* confirm MII not busy */
190 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
191 if (ret < 0) {
192 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n");
193 goto done;
194 }
195
196 /* set the address, index & direction (read from PHY) */
197 phy_id &= dev->mii.phy_id_mask;
198 idx &= dev->mii.reg_num_mask;
199 addr = (phy_id << 11) | (idx << 6) | MII_READ_ | MII_BUSY_;
200 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm);
201 if (ret < 0) {
202 netdev_warn(dev->net, "Error writing MII_ADDR\n");
203 goto done;
204 }
205
206 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
207 if (ret < 0) {
208 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx);
209 goto done;
210 }
211
212 ret = __smsc95xx_read_reg(dev, MII_DATA, &val, in_pm);
213 if (ret < 0) {
214 netdev_warn(dev->net, "Error reading MII_DATA\n");
215 goto done;
216 }
217
218 ret = (u16)(val & 0xFFFF);
219
220 done:
221 mutex_unlock(&dev->phy_mutex);
222 return ret;
223 }
224
225 static void __smsc95xx_mdio_write(struct net_device *netdev, int phy_id,
226 int idx, int regval, int in_pm)
227 {
228 struct usbnet *dev = netdev_priv(netdev);
229 u32 val, addr;
230 int ret;
231
232 mutex_lock(&dev->phy_mutex);
233
234 /* confirm MII not busy */
235 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
236 if (ret < 0) {
237 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n");
238 goto done;
239 }
240
241 val = regval;
242 ret = __smsc95xx_write_reg(dev, MII_DATA, val, in_pm);
243 if (ret < 0) {
244 netdev_warn(dev->net, "Error writing MII_DATA\n");
245 goto done;
246 }
247
248 /* set the address, index & direction (write to PHY) */
249 phy_id &= dev->mii.phy_id_mask;
250 idx &= dev->mii.reg_num_mask;
251 addr = (phy_id << 11) | (idx << 6) | MII_WRITE_ | MII_BUSY_;
252 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm);
253 if (ret < 0) {
254 netdev_warn(dev->net, "Error writing MII_ADDR\n");
255 goto done;
256 }
257
258 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
259 if (ret < 0) {
260 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx);
261 goto done;
262 }
263
264 done:
265 mutex_unlock(&dev->phy_mutex);
266 }
267
268 static int smsc95xx_mdio_read_nopm(struct net_device *netdev, int phy_id,
269 int idx)
270 {
271 return __smsc95xx_mdio_read(netdev, phy_id, idx, 1);
272 }
273
274 static void smsc95xx_mdio_write_nopm(struct net_device *netdev, int phy_id,
275 int idx, int regval)
276 {
277 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 1);
278 }
279
280 static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
281 {
282 return __smsc95xx_mdio_read(netdev, phy_id, idx, 0);
283 }
284
285 static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
286 int regval)
287 {
288 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 0);
289 }
290
291 static int __must_check smsc95xx_wait_eeprom(struct usbnet *dev)
292 {
293 unsigned long start_time = jiffies;
294 u32 val;
295 int ret;
296
297 do {
298 ret = smsc95xx_read_reg(dev, E2P_CMD, &val);
299 if (ret < 0) {
300 netdev_warn(dev->net, "Error reading E2P_CMD\n");
301 return ret;
302 }
303
304 if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_))
305 break;
306 udelay(40);
307 } while (!time_after(jiffies, start_time + HZ));
308
309 if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) {
310 netdev_warn(dev->net, "EEPROM read operation timeout\n");
311 return -EIO;
312 }
313
314 return 0;
315 }
316
317 static int __must_check smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev)
318 {
319 unsigned long start_time = jiffies;
320 u32 val;
321 int ret;
322
323 do {
324 ret = smsc95xx_read_reg(dev, E2P_CMD, &val);
325 if (ret < 0) {
326 netdev_warn(dev->net, "Error reading E2P_CMD\n");
327 return ret;
328 }
329
330 if (!(val & E2P_CMD_BUSY_))
331 return 0;
332
333 udelay(40);
334 } while (!time_after(jiffies, start_time + HZ));
335
336 netdev_warn(dev->net, "EEPROM is busy\n");
337 return -EIO;
338 }
339
340 static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
341 u8 *data)
342 {
343 u32 val;
344 int i, ret;
345
346 BUG_ON(!dev);
347 BUG_ON(!data);
348
349 ret = smsc95xx_eeprom_confirm_not_busy(dev);
350 if (ret)
351 return ret;
352
353 for (i = 0; i < length; i++) {
354 val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_);
355 ret = smsc95xx_write_reg(dev, E2P_CMD, val);
356 if (ret < 0) {
357 netdev_warn(dev->net, "Error writing E2P_CMD\n");
358 return ret;
359 }
360
361 ret = smsc95xx_wait_eeprom(dev);
362 if (ret < 0)
363 return ret;
364
365 ret = smsc95xx_read_reg(dev, E2P_DATA, &val);
366 if (ret < 0) {
367 netdev_warn(dev->net, "Error reading E2P_DATA\n");
368 return ret;
369 }
370
371 data[i] = val & 0xFF;
372 offset++;
373 }
374
375 return 0;
376 }
377
378 static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
379 u8 *data)
380 {
381 u32 val;
382 int i, ret;
383
384 BUG_ON(!dev);
385 BUG_ON(!data);
386
387 ret = smsc95xx_eeprom_confirm_not_busy(dev);
388 if (ret)
389 return ret;
390
391 /* Issue write/erase enable command */
392 val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_;
393 ret = smsc95xx_write_reg(dev, E2P_CMD, val);
394 if (ret < 0) {
395 netdev_warn(dev->net, "Error writing E2P_DATA\n");
396 return ret;
397 }
398
399 ret = smsc95xx_wait_eeprom(dev);
400 if (ret < 0)
401 return ret;
402
403 for (i = 0; i < length; i++) {
404
405 /* Fill data register */
406 val = data[i];
407 ret = smsc95xx_write_reg(dev, E2P_DATA, val);
408 if (ret < 0) {
409 netdev_warn(dev->net, "Error writing E2P_DATA\n");
410 return ret;
411 }
412
413 /* Send "write" command */
414 val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_);
415 ret = smsc95xx_write_reg(dev, E2P_CMD, val);
416 if (ret < 0) {
417 netdev_warn(dev->net, "Error writing E2P_CMD\n");
418 return ret;
419 }
420
421 ret = smsc95xx_wait_eeprom(dev);
422 if (ret < 0)
423 return ret;
424
425 offset++;
426 }
427
428 return 0;
429 }
430
431 static int __must_check smsc95xx_write_reg_async(struct usbnet *dev, u16 index,
432 u32 data)
433 {
434 const u16 size = 4;
435 u32 buf;
436 int ret;
437
438 buf = data;
439 cpu_to_le32s(&buf);
440
441 ret = usbnet_write_cmd_async(dev, USB_VENDOR_REQUEST_WRITE_REGISTER,
442 USB_DIR_OUT | USB_TYPE_VENDOR |
443 USB_RECIP_DEVICE,
444 0, index, &buf, size);
445 if (ret < 0)
446 netdev_warn(dev->net, "Error write async cmd, sts=%d\n",
447 ret);
448 return ret;
449 }
450
451 /* returns hash bit number for given MAC address
452 * example:
453 * 01 00 5E 00 00 01 -> returns bit number 31 */
454 static unsigned int smsc95xx_hash(char addr[ETH_ALEN])
455 {
456 return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f;
457 }
458
459 static void smsc95xx_set_multicast(struct net_device *netdev)
460 {
461 struct usbnet *dev = netdev_priv(netdev);
462 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
463 unsigned long flags;
464 int ret;
465
466 pdata->hash_hi = 0;
467 pdata->hash_lo = 0;
468
469 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
470
471 if (dev->net->flags & IFF_PROMISC) {
472 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n");
473 pdata->mac_cr |= MAC_CR_PRMS_;
474 pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
475 } else if (dev->net->flags & IFF_ALLMULTI) {
476 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n");
477 pdata->mac_cr |= MAC_CR_MCPAS_;
478 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_);
479 } else if (!netdev_mc_empty(dev->net)) {
480 struct netdev_hw_addr *ha;
481
482 pdata->mac_cr |= MAC_CR_HPFILT_;
483 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_);
484
485 netdev_for_each_mc_addr(ha, netdev) {
486 u32 bitnum = smsc95xx_hash(ha->addr);
487 u32 mask = 0x01 << (bitnum & 0x1F);
488 if (bitnum & 0x20)
489 pdata->hash_hi |= mask;
490 else
491 pdata->hash_lo |= mask;
492 }
493
494 netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n",
495 pdata->hash_hi, pdata->hash_lo);
496 } else {
497 netif_dbg(dev, drv, dev->net, "receive own packets only\n");
498 pdata->mac_cr &=
499 ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
500 }
501
502 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
503
504 /* Initiate async writes, as we can't wait for completion here */
505 ret = smsc95xx_write_reg_async(dev, HASHH, pdata->hash_hi);
506 if (ret < 0)
507 netdev_warn(dev->net, "failed to initiate async write to HASHH\n");
508
509 ret = smsc95xx_write_reg_async(dev, HASHL, pdata->hash_lo);
510 if (ret < 0)
511 netdev_warn(dev->net, "failed to initiate async write to HASHL\n");
512
513 ret = smsc95xx_write_reg_async(dev, MAC_CR, pdata->mac_cr);
514 if (ret < 0)
515 netdev_warn(dev->net, "failed to initiate async write to MAC_CR\n");
516 }
517
518 static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex,
519 u16 lcladv, u16 rmtadv)
520 {
521 u32 flow, afc_cfg = 0;
522
523 int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg);
524 if (ret < 0)
525 return ret;
526
527 if (duplex == DUPLEX_FULL) {
528 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
529
530 if (cap & FLOW_CTRL_RX)
531 flow = 0xFFFF0002;
532 else
533 flow = 0;
534
535 if (cap & FLOW_CTRL_TX)
536 afc_cfg |= 0xF;
537 else
538 afc_cfg &= ~0xF;
539
540 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n",
541 cap & FLOW_CTRL_RX ? "enabled" : "disabled",
542 cap & FLOW_CTRL_TX ? "enabled" : "disabled");
543 } else {
544 netif_dbg(dev, link, dev->net, "half duplex\n");
545 flow = 0;
546 afc_cfg |= 0xF;
547 }
548
549 ret = smsc95xx_write_reg(dev, FLOW, flow);
550 if (ret < 0)
551 return ret;
552
553 return smsc95xx_write_reg(dev, AFC_CFG, afc_cfg);
554 }
555
556 static int smsc95xx_link_reset(struct usbnet *dev)
557 {
558 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
559 struct mii_if_info *mii = &dev->mii;
560 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
561 unsigned long flags;
562 u16 lcladv, rmtadv;
563 int ret;
564
565 /* clear interrupt status */
566 ret = smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC);
567 if (ret < 0)
568 return ret;
569
570 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
571 if (ret < 0)
572 return ret;
573
574 mii_check_media(mii, 1, 1);
575 mii_ethtool_gset(&dev->mii, &ecmd);
576 lcladv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
577 rmtadv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
578
579 netif_dbg(dev, link, dev->net,
580 "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
581 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv);
582
583 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
584 if (ecmd.duplex != DUPLEX_FULL) {
585 pdata->mac_cr &= ~MAC_CR_FDPX_;
586 pdata->mac_cr |= MAC_CR_RCVOWN_;
587 } else {
588 pdata->mac_cr &= ~MAC_CR_RCVOWN_;
589 pdata->mac_cr |= MAC_CR_FDPX_;
590 }
591 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
592
593 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
594 if (ret < 0)
595 return ret;
596
597 ret = smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
598 if (ret < 0)
599 netdev_warn(dev->net, "Error updating PHY flow control\n");
600
601 return ret;
602 }
603
604 static void smsc95xx_status(struct usbnet *dev, struct urb *urb)
605 {
606 u32 intdata;
607
608 if (urb->actual_length != 4) {
609 netdev_warn(dev->net, "unexpected urb length %d\n",
610 urb->actual_length);
611 return;
612 }
613
614 memcpy(&intdata, urb->transfer_buffer, 4);
615 le32_to_cpus(&intdata);
616
617 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
618
619 if (intdata & INT_ENP_PHY_INT_)
620 usbnet_defer_kevent(dev, EVENT_LINK_RESET);
621 else
622 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n",
623 intdata);
624 }
625
626 /* Enable or disable Tx & Rx checksum offload engines */
627 static int smsc95xx_set_features(struct net_device *netdev,
628 netdev_features_t features)
629 {
630 struct usbnet *dev = netdev_priv(netdev);
631 u32 read_buf;
632 int ret;
633
634 ret = smsc95xx_read_reg(dev, COE_CR, &read_buf);
635 if (ret < 0)
636 return ret;
637
638 if (features & NETIF_F_HW_CSUM)
639 read_buf |= Tx_COE_EN_;
640 else
641 read_buf &= ~Tx_COE_EN_;
642
643 if (features & NETIF_F_RXCSUM)
644 read_buf |= Rx_COE_EN_;
645 else
646 read_buf &= ~Rx_COE_EN_;
647
648 ret = smsc95xx_write_reg(dev, COE_CR, read_buf);
649 if (ret < 0)
650 return ret;
651
652 netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf);
653 return 0;
654 }
655
656 static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net)
657 {
658 return MAX_EEPROM_SIZE;
659 }
660
661 static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev,
662 struct ethtool_eeprom *ee, u8 *data)
663 {
664 struct usbnet *dev = netdev_priv(netdev);
665
666 ee->magic = LAN95XX_EEPROM_MAGIC;
667
668 return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data);
669 }
670
671 static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev,
672 struct ethtool_eeprom *ee, u8 *data)
673 {
674 struct usbnet *dev = netdev_priv(netdev);
675
676 if (ee->magic != LAN95XX_EEPROM_MAGIC) {
677 netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n",
678 ee->magic);
679 return -EINVAL;
680 }
681
682 return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data);
683 }
684
685 static int smsc95xx_ethtool_getregslen(struct net_device *netdev)
686 {
687 /* all smsc95xx registers */
688 return COE_CR - ID_REV + sizeof(u32);
689 }
690
691 static void
692 smsc95xx_ethtool_getregs(struct net_device *netdev, struct ethtool_regs *regs,
693 void *buf)
694 {
695 struct usbnet *dev = netdev_priv(netdev);
696 unsigned int i, j;
697 int retval;
698 u32 *data = buf;
699
700 retval = smsc95xx_read_reg(dev, ID_REV, &regs->version);
701 if (retval < 0) {
702 netdev_warn(netdev, "REGS: cannot read ID_REV\n");
703 return;
704 }
705
706 for (i = ID_REV, j = 0; i <= COE_CR; i += (sizeof(u32)), j++) {
707 retval = smsc95xx_read_reg(dev, i, &data[j]);
708 if (retval < 0) {
709 netdev_warn(netdev, "REGS: cannot read reg[%x]\n", i);
710 return;
711 }
712 }
713 }
714
715 static void smsc95xx_ethtool_get_wol(struct net_device *net,
716 struct ethtool_wolinfo *wolinfo)
717 {
718 struct usbnet *dev = netdev_priv(net);
719 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
720
721 wolinfo->supported = SUPPORTED_WAKE;
722 wolinfo->wolopts = pdata->wolopts;
723 }
724
725 static int smsc95xx_ethtool_set_wol(struct net_device *net,
726 struct ethtool_wolinfo *wolinfo)
727 {
728 struct usbnet *dev = netdev_priv(net);
729 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
730 int ret;
731
732 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
733
734 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
735 if (ret < 0)
736 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret);
737
738 return ret;
739 }
740
741 static const struct ethtool_ops smsc95xx_ethtool_ops = {
742 .get_link = usbnet_get_link,
743 .nway_reset = usbnet_nway_reset,
744 .get_drvinfo = usbnet_get_drvinfo,
745 .get_msglevel = usbnet_get_msglevel,
746 .set_msglevel = usbnet_set_msglevel,
747 .get_settings = usbnet_get_settings,
748 .set_settings = usbnet_set_settings,
749 .get_eeprom_len = smsc95xx_ethtool_get_eeprom_len,
750 .get_eeprom = smsc95xx_ethtool_get_eeprom,
751 .set_eeprom = smsc95xx_ethtool_set_eeprom,
752 .get_regs_len = smsc95xx_ethtool_getregslen,
753 .get_regs = smsc95xx_ethtool_getregs,
754 .get_wol = smsc95xx_ethtool_get_wol,
755 .set_wol = smsc95xx_ethtool_set_wol,
756 };
757
758 static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
759 {
760 struct usbnet *dev = netdev_priv(netdev);
761
762 if (!netif_running(netdev))
763 return -EINVAL;
764
765 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
766 }
767
768 static void smsc95xx_init_mac_address(struct usbnet *dev)
769 {
770 /* try reading mac address from EEPROM */
771 if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
772 dev->net->dev_addr) == 0) {
773 if (is_valid_ether_addr(dev->net->dev_addr)) {
774 /* eeprom values are valid so use them */
775 netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n");
776 return;
777 }
778 }
779
780 /* no eeprom, or eeprom values are invalid. generate random MAC */
781 eth_hw_addr_random(dev->net);
782 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
783 }
784
785 static int smsc95xx_set_mac_address(struct usbnet *dev)
786 {
787 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
788 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
789 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
790 int ret;
791
792 ret = smsc95xx_write_reg(dev, ADDRL, addr_lo);
793 if (ret < 0)
794 return ret;
795
796 return smsc95xx_write_reg(dev, ADDRH, addr_hi);
797 }
798
799 /* starts the TX path */
800 static int smsc95xx_start_tx_path(struct usbnet *dev)
801 {
802 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
803 unsigned long flags;
804 int ret;
805
806 /* Enable Tx at MAC */
807 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
808 pdata->mac_cr |= MAC_CR_TXEN_;
809 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
810
811 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
812 if (ret < 0)
813 return ret;
814
815 /* Enable Tx at SCSRs */
816 return smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_);
817 }
818
819 /* Starts the Receive path */
820 static int smsc95xx_start_rx_path(struct usbnet *dev, int in_pm)
821 {
822 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
823 unsigned long flags;
824
825 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
826 pdata->mac_cr |= MAC_CR_RXEN_;
827 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
828
829 return __smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr, in_pm);
830 }
831
832 static int smsc95xx_phy_initialize(struct usbnet *dev)
833 {
834 int bmcr, ret, timeout = 0;
835
836 /* Initialize MII structure */
837 dev->mii.dev = dev->net;
838 dev->mii.mdio_read = smsc95xx_mdio_read;
839 dev->mii.mdio_write = smsc95xx_mdio_write;
840 dev->mii.phy_id_mask = 0x1f;
841 dev->mii.reg_num_mask = 0x1f;
842 dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID;
843
844 /* reset phy and wait for reset to complete */
845 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
846
847 do {
848 msleep(10);
849 bmcr = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
850 timeout++;
851 } while ((bmcr & BMCR_RESET) && (timeout < 100));
852
853 if (timeout >= 100) {
854 netdev_warn(dev->net, "timeout on PHY Reset");
855 return -EIO;
856 }
857
858 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
859 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
860 ADVERTISE_PAUSE_ASYM);
861
862 /* read to clear */
863 ret = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
864 if (ret < 0) {
865 netdev_warn(dev->net, "Failed to read PHY_INT_SRC during init\n");
866 return ret;
867 }
868
869 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
870 PHY_INT_MASK_DEFAULT_);
871 mii_nway_restart(&dev->mii);
872
873 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n");
874 return 0;
875 }
876
877 static int smsc95xx_reset(struct usbnet *dev)
878 {
879 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
880 u32 read_buf, write_buf, burst_cap;
881 int ret = 0, timeout;
882
883 netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n");
884
885 ret = smsc95xx_write_reg(dev, HW_CFG, HW_CFG_LRST_);
886 if (ret < 0)
887 return ret;
888
889 timeout = 0;
890 do {
891 msleep(10);
892 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
893 if (ret < 0)
894 return ret;
895 timeout++;
896 } while ((read_buf & HW_CFG_LRST_) && (timeout < 100));
897
898 if (timeout >= 100) {
899 netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n");
900 return ret;
901 }
902
903 ret = smsc95xx_write_reg(dev, PM_CTRL, PM_CTL_PHY_RST_);
904 if (ret < 0)
905 return ret;
906
907 timeout = 0;
908 do {
909 msleep(10);
910 ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf);
911 if (ret < 0)
912 return ret;
913 timeout++;
914 } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100));
915
916 if (timeout >= 100) {
917 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
918 return ret;
919 }
920
921 ret = smsc95xx_set_mac_address(dev);
922 if (ret < 0)
923 return ret;
924
925 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
926 dev->net->dev_addr);
927
928 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
929 if (ret < 0)
930 return ret;
931
932 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
933 read_buf);
934
935 read_buf |= HW_CFG_BIR_;
936
937 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
938 if (ret < 0)
939 return ret;
940
941 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
942 if (ret < 0)
943 return ret;
944
945 netif_dbg(dev, ifup, dev->net,
946 "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n",
947 read_buf);
948
949 if (!turbo_mode) {
950 burst_cap = 0;
951 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
952 } else if (dev->udev->speed == USB_SPEED_HIGH) {
953 burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
954 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
955 } else {
956 burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
957 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
958 }
959
960 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
961 (ulong)dev->rx_urb_size);
962
963 ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap);
964 if (ret < 0)
965 return ret;
966
967 ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf);
968 if (ret < 0)
969 return ret;
970
971 netif_dbg(dev, ifup, dev->net,
972 "Read Value from BURST_CAP after writing: 0x%08x\n",
973 read_buf);
974
975 ret = smsc95xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
976 if (ret < 0)
977 return ret;
978
979 ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf);
980 if (ret < 0)
981 return ret;
982
983 netif_dbg(dev, ifup, dev->net,
984 "Read Value from BULK_IN_DLY after writing: 0x%08x\n",
985 read_buf);
986
987 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
988 if (ret < 0)
989 return ret;
990
991 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG: 0x%08x\n",
992 read_buf);
993
994 if (turbo_mode)
995 read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_);
996
997 read_buf &= ~HW_CFG_RXDOFF_;
998
999 /* set Rx data offset=2, Make IP header aligns on word boundary. */
1000 read_buf |= NET_IP_ALIGN << 9;
1001
1002 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
1003 if (ret < 0)
1004 return ret;
1005
1006 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
1007 if (ret < 0)
1008 return ret;
1009
1010 netif_dbg(dev, ifup, dev->net,
1011 "Read Value from HW_CFG after writing: 0x%08x\n", read_buf);
1012
1013 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
1014 if (ret < 0)
1015 return ret;
1016
1017 ret = smsc95xx_read_reg(dev, ID_REV, &read_buf);
1018 if (ret < 0)
1019 return ret;
1020 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf);
1021
1022 /* Configure GPIO pins as LED outputs */
1023 write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED |
1024 LED_GPIO_CFG_FDX_LED;
1025 ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf);
1026 if (ret < 0)
1027 return ret;
1028
1029 /* Init Tx */
1030 ret = smsc95xx_write_reg(dev, FLOW, 0);
1031 if (ret < 0)
1032 return ret;
1033
1034 ret = smsc95xx_write_reg(dev, AFC_CFG, AFC_CFG_DEFAULT);
1035 if (ret < 0)
1036 return ret;
1037
1038 /* Don't need mac_cr_lock during initialisation */
1039 ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr);
1040 if (ret < 0)
1041 return ret;
1042
1043 /* Init Rx */
1044 /* Set Vlan */
1045 ret = smsc95xx_write_reg(dev, VLAN1, (u32)ETH_P_8021Q);
1046 if (ret < 0)
1047 return ret;
1048
1049 /* Enable or disable checksum offload engines */
1050 ret = smsc95xx_set_features(dev->net, dev->net->features);
1051 if (ret < 0) {
1052 netdev_warn(dev->net, "Failed to set checksum offload features\n");
1053 return ret;
1054 }
1055
1056 smsc95xx_set_multicast(dev->net);
1057
1058 ret = smsc95xx_phy_initialize(dev);
1059 if (ret < 0) {
1060 netdev_warn(dev->net, "Failed to init PHY\n");
1061 return ret;
1062 }
1063
1064 ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf);
1065 if (ret < 0)
1066 return ret;
1067
1068 /* enable PHY interrupts */
1069 read_buf |= INT_EP_CTL_PHY_INT_;
1070
1071 ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf);
1072 if (ret < 0)
1073 return ret;
1074
1075 ret = smsc95xx_start_tx_path(dev);
1076 if (ret < 0) {
1077 netdev_warn(dev->net, "Failed to start TX path\n");
1078 return ret;
1079 }
1080
1081 ret = smsc95xx_start_rx_path(dev, 0);
1082 if (ret < 0) {
1083 netdev_warn(dev->net, "Failed to start RX path\n");
1084 return ret;
1085 }
1086
1087 netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n");
1088 return 0;
1089 }
1090
1091 static const struct net_device_ops smsc95xx_netdev_ops = {
1092 .ndo_open = usbnet_open,
1093 .ndo_stop = usbnet_stop,
1094 .ndo_start_xmit = usbnet_start_xmit,
1095 .ndo_tx_timeout = usbnet_tx_timeout,
1096 .ndo_change_mtu = usbnet_change_mtu,
1097 .ndo_set_mac_address = eth_mac_addr,
1098 .ndo_validate_addr = eth_validate_addr,
1099 .ndo_do_ioctl = smsc95xx_ioctl,
1100 .ndo_set_rx_mode = smsc95xx_set_multicast,
1101 .ndo_set_features = smsc95xx_set_features,
1102 };
1103
1104 static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
1105 {
1106 struct smsc95xx_priv *pdata = NULL;
1107 u32 val;
1108 int ret;
1109
1110 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
1111
1112 ret = usbnet_get_endpoints(dev, intf);
1113 if (ret < 0) {
1114 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
1115 return ret;
1116 }
1117
1118 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv),
1119 GFP_KERNEL);
1120
1121 pdata = (struct smsc95xx_priv *)(dev->data[0]);
1122 if (!pdata)
1123 return -ENOMEM;
1124
1125 spin_lock_init(&pdata->mac_cr_lock);
1126
1127 if (DEFAULT_TX_CSUM_ENABLE)
1128 dev->net->features |= NETIF_F_HW_CSUM;
1129 if (DEFAULT_RX_CSUM_ENABLE)
1130 dev->net->features |= NETIF_F_RXCSUM;
1131
1132 dev->net->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM;
1133
1134 smsc95xx_init_mac_address(dev);
1135
1136 /* Init all registers */
1137 ret = smsc95xx_reset(dev);
1138
1139 /* detect device revision as different features may be available */
1140 ret = smsc95xx_read_reg(dev, ID_REV, &val);
1141 if (ret < 0)
1142 return ret;
1143 val >>= 16;
1144
1145 if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9530_) ||
1146 (val == ID_REV_CHIP_ID_89530_) || (val == ID_REV_CHIP_ID_9730_))
1147 pdata->features = (FEATURE_8_WAKEUP_FILTERS |
1148 FEATURE_PHY_NLP_CROSSOVER |
1149 FEATURE_REMOTE_WAKEUP);
1150 else if (val == ID_REV_CHIP_ID_9512_)
1151 pdata->features = FEATURE_8_WAKEUP_FILTERS;
1152
1153 dev->net->netdev_ops = &smsc95xx_netdev_ops;
1154 dev->net->ethtool_ops = &smsc95xx_ethtool_ops;
1155 dev->net->flags |= IFF_MULTICAST;
1156 dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM;
1157 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
1158 return 0;
1159 }
1160
1161 static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf)
1162 {
1163 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1164 if (pdata) {
1165 netif_dbg(dev, ifdown, dev->net, "free pdata\n");
1166 kfree(pdata);
1167 pdata = NULL;
1168 dev->data[0] = 0;
1169 }
1170 }
1171
1172 static u32 smsc_crc(const u8 *buffer, size_t len, int filter)
1173 {
1174 u32 crc = bitrev16(crc16(0xFFFF, buffer, len));
1175 return crc << ((filter % 2) * 16);
1176 }
1177
1178 static int smsc95xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask)
1179 {
1180 struct mii_if_info *mii = &dev->mii;
1181 int ret;
1182
1183 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n");
1184
1185 /* read to clear */
1186 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC);
1187 if (ret < 0)
1188 return ret;
1189
1190 /* enable interrupt source */
1191 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK);
1192 if (ret < 0)
1193 return ret;
1194
1195 ret |= mask;
1196
1197 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret);
1198
1199 return 0;
1200 }
1201
1202 static int smsc95xx_link_ok_nopm(struct usbnet *dev)
1203 {
1204 struct mii_if_info *mii = &dev->mii;
1205 int ret;
1206
1207 /* first, a dummy read, needed to latch some MII phys */
1208 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1209 if (ret < 0)
1210 return ret;
1211
1212 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1213 if (ret < 0)
1214 return ret;
1215
1216 return !!(ret & BMSR_LSTATUS);
1217 }
1218
1219 static int smsc95xx_enter_suspend0(struct usbnet *dev)
1220 {
1221 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1222 u32 val;
1223 int ret;
1224
1225 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1226 if (ret < 0)
1227 return ret;
1228
1229 val &= (~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_));
1230 val |= PM_CTL_SUS_MODE_0;
1231
1232 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1233 if (ret < 0)
1234 return ret;
1235
1236 /* clear wol status */
1237 val &= ~PM_CTL_WUPS_;
1238 val |= PM_CTL_WUPS_WOL_;
1239
1240 /* enable energy detection */
1241 if (pdata->wolopts & WAKE_PHY)
1242 val |= PM_CTL_WUPS_ED_;
1243
1244 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1245 if (ret < 0)
1246 return ret;
1247
1248 /* read back PM_CTRL */
1249 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1250 if (ret < 0)
1251 return ret;
1252
1253 pdata->suspend_flags |= SUSPEND_SUSPEND0;
1254
1255 return 0;
1256 }
1257
1258 static int smsc95xx_enter_suspend1(struct usbnet *dev)
1259 {
1260 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1261 struct mii_if_info *mii = &dev->mii;
1262 u32 val;
1263 int ret;
1264
1265 /* reconfigure link pulse detection timing for
1266 * compatibility with non-standard link partners
1267 */
1268 if (pdata->features & FEATURE_PHY_NLP_CROSSOVER)
1269 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_EDPD_CONFIG,
1270 PHY_EDPD_CONFIG_DEFAULT);
1271
1272 /* enable energy detect power-down mode */
1273 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS);
1274 if (ret < 0)
1275 return ret;
1276
1277 ret |= MODE_CTRL_STS_EDPWRDOWN_;
1278
1279 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS, ret);
1280
1281 /* enter SUSPEND1 mode */
1282 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1283 if (ret < 0)
1284 return ret;
1285
1286 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1287 val |= PM_CTL_SUS_MODE_1;
1288
1289 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1290 if (ret < 0)
1291 return ret;
1292
1293 /* clear wol status, enable energy detection */
1294 val &= ~PM_CTL_WUPS_;
1295 val |= (PM_CTL_WUPS_ED_ | PM_CTL_ED_EN_);
1296
1297 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1298 if (ret < 0)
1299 return ret;
1300
1301 pdata->suspend_flags |= SUSPEND_SUSPEND1;
1302
1303 return 0;
1304 }
1305
1306 static int smsc95xx_enter_suspend2(struct usbnet *dev)
1307 {
1308 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1309 u32 val;
1310 int ret;
1311
1312 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1313 if (ret < 0)
1314 return ret;
1315
1316 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1317 val |= PM_CTL_SUS_MODE_2;
1318
1319 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1320 if (ret < 0)
1321 return ret;
1322
1323 pdata->suspend_flags |= SUSPEND_SUSPEND2;
1324
1325 return 0;
1326 }
1327
1328 static int smsc95xx_enter_suspend3(struct usbnet *dev)
1329 {
1330 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1331 u32 val;
1332 int ret;
1333
1334 ret = smsc95xx_read_reg_nopm(dev, RX_FIFO_INF, &val);
1335 if (ret < 0)
1336 return ret;
1337
1338 if (val & 0xFFFF) {
1339 netdev_info(dev->net, "rx fifo not empty in autosuspend\n");
1340 return -EBUSY;
1341 }
1342
1343 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1344 if (ret < 0)
1345 return ret;
1346
1347 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1348 val |= PM_CTL_SUS_MODE_3 | PM_CTL_RES_CLR_WKP_STS;
1349
1350 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1351 if (ret < 0)
1352 return ret;
1353
1354 /* clear wol status */
1355 val &= ~PM_CTL_WUPS_;
1356 val |= PM_CTL_WUPS_WOL_;
1357
1358 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1359 if (ret < 0)
1360 return ret;
1361
1362 pdata->suspend_flags |= SUSPEND_SUSPEND3;
1363
1364 return 0;
1365 }
1366
1367 static int smsc95xx_autosuspend(struct usbnet *dev, u32 link_up)
1368 {
1369 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1370 int ret;
1371
1372 if (!netif_running(dev->net)) {
1373 /* interface is ifconfig down so fully power down hw */
1374 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n");
1375 return smsc95xx_enter_suspend2(dev);
1376 }
1377
1378 if (!link_up) {
1379 /* link is down so enter EDPD mode, but only if device can
1380 * reliably resume from it. This check should be redundant
1381 * as current FEATURE_REMOTE_WAKEUP parts also support
1382 * FEATURE_PHY_NLP_CROSSOVER but it's included for clarity */
1383 if (!(pdata->features & FEATURE_PHY_NLP_CROSSOVER)) {
1384 netdev_warn(dev->net, "EDPD not supported\n");
1385 return -EBUSY;
1386 }
1387
1388 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n");
1389
1390 /* enable PHY wakeup events for if cable is attached */
1391 ret = smsc95xx_enable_phy_wakeup_interrupts(dev,
1392 PHY_INT_MASK_ANEG_COMP_);
1393 if (ret < 0) {
1394 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1395 return ret;
1396 }
1397
1398 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1399 return smsc95xx_enter_suspend1(dev);
1400 }
1401
1402 /* enable PHY wakeup events so we remote wakeup if cable is pulled */
1403 ret = smsc95xx_enable_phy_wakeup_interrupts(dev,
1404 PHY_INT_MASK_LINK_DOWN_);
1405 if (ret < 0) {
1406 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1407 return ret;
1408 }
1409
1410 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n");
1411 return smsc95xx_enter_suspend3(dev);
1412 }
1413
1414 static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
1415 {
1416 struct usbnet *dev = usb_get_intfdata(intf);
1417 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1418 u32 val, link_up;
1419 int ret;
1420
1421 ret = usbnet_suspend(intf, message);
1422 if (ret < 0) {
1423 netdev_warn(dev->net, "usbnet_suspend error\n");
1424 return ret;
1425 }
1426
1427 if (pdata->suspend_flags) {
1428 netdev_warn(dev->net, "error during last resume\n");
1429 pdata->suspend_flags = 0;
1430 }
1431
1432 /* determine if link is up using only _nopm functions */
1433 link_up = smsc95xx_link_ok_nopm(dev);
1434
1435 if (message.event == PM_EVENT_AUTO_SUSPEND &&
1436 (pdata->features & FEATURE_REMOTE_WAKEUP)) {
1437 ret = smsc95xx_autosuspend(dev, link_up);
1438 goto done;
1439 }
1440
1441 /* if we get this far we're not autosuspending */
1442 /* if no wol options set, or if link is down and we're not waking on
1443 * PHY activity, enter lowest power SUSPEND2 mode
1444 */
1445 if (!(pdata->wolopts & SUPPORTED_WAKE) ||
1446 !(link_up || (pdata->wolopts & WAKE_PHY))) {
1447 netdev_info(dev->net, "entering SUSPEND2 mode\n");
1448
1449 /* disable energy detect (link up) & wake up events */
1450 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1451 if (ret < 0)
1452 goto done;
1453
1454 val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_);
1455
1456 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1457 if (ret < 0)
1458 goto done;
1459
1460 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1461 if (ret < 0)
1462 goto done;
1463
1464 val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_);
1465
1466 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1467 if (ret < 0)
1468 goto done;
1469
1470 ret = smsc95xx_enter_suspend2(dev);
1471 goto done;
1472 }
1473
1474 if (pdata->wolopts & WAKE_PHY) {
1475 ret = smsc95xx_enable_phy_wakeup_interrupts(dev,
1476 (PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_LINK_DOWN_));
1477 if (ret < 0) {
1478 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1479 goto done;
1480 }
1481
1482 /* if link is down then configure EDPD and enter SUSPEND1,
1483 * otherwise enter SUSPEND0 below
1484 */
1485 if (!link_up) {
1486 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1487 ret = smsc95xx_enter_suspend1(dev);
1488 goto done;
1489 }
1490 }
1491
1492 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
1493 u32 *filter_mask = kzalloc(sizeof(u32) * 32, GFP_KERNEL);
1494 u32 command[2];
1495 u32 offset[2];
1496 u32 crc[4];
1497 int wuff_filter_count =
1498 (pdata->features & FEATURE_8_WAKEUP_FILTERS) ?
1499 LAN9500A_WUFF_NUM : LAN9500_WUFF_NUM;
1500 int i, filter = 0;
1501
1502 if (!filter_mask) {
1503 netdev_warn(dev->net, "Unable to allocate filter_mask\n");
1504 ret = -ENOMEM;
1505 goto done;
1506 }
1507
1508 memset(command, 0, sizeof(command));
1509 memset(offset, 0, sizeof(offset));
1510 memset(crc, 0, sizeof(crc));
1511
1512 if (pdata->wolopts & WAKE_BCAST) {
1513 const u8 bcast[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1514 netdev_info(dev->net, "enabling broadcast detection\n");
1515 filter_mask[filter * 4] = 0x003F;
1516 filter_mask[filter * 4 + 1] = 0x00;
1517 filter_mask[filter * 4 + 2] = 0x00;
1518 filter_mask[filter * 4 + 3] = 0x00;
1519 command[filter/4] |= 0x05UL << ((filter % 4) * 8);
1520 offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1521 crc[filter/2] |= smsc_crc(bcast, 6, filter);
1522 filter++;
1523 }
1524
1525 if (pdata->wolopts & WAKE_MCAST) {
1526 const u8 mcast[] = {0x01, 0x00, 0x5E};
1527 netdev_info(dev->net, "enabling multicast detection\n");
1528 filter_mask[filter * 4] = 0x0007;
1529 filter_mask[filter * 4 + 1] = 0x00;
1530 filter_mask[filter * 4 + 2] = 0x00;
1531 filter_mask[filter * 4 + 3] = 0x00;
1532 command[filter/4] |= 0x09UL << ((filter % 4) * 8);
1533 offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1534 crc[filter/2] |= smsc_crc(mcast, 3, filter);
1535 filter++;
1536 }
1537
1538 if (pdata->wolopts & WAKE_ARP) {
1539 const u8 arp[] = {0x08, 0x06};
1540 netdev_info(dev->net, "enabling ARP detection\n");
1541 filter_mask[filter * 4] = 0x0003;
1542 filter_mask[filter * 4 + 1] = 0x00;
1543 filter_mask[filter * 4 + 2] = 0x00;
1544 filter_mask[filter * 4 + 3] = 0x00;
1545 command[filter/4] |= 0x05UL << ((filter % 4) * 8);
1546 offset[filter/4] |= 0x0C << ((filter % 4) * 8);
1547 crc[filter/2] |= smsc_crc(arp, 2, filter);
1548 filter++;
1549 }
1550
1551 if (pdata->wolopts & WAKE_UCAST) {
1552 netdev_info(dev->net, "enabling unicast detection\n");
1553 filter_mask[filter * 4] = 0x003F;
1554 filter_mask[filter * 4 + 1] = 0x00;
1555 filter_mask[filter * 4 + 2] = 0x00;
1556 filter_mask[filter * 4 + 3] = 0x00;
1557 command[filter/4] |= 0x01UL << ((filter % 4) * 8);
1558 offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1559 crc[filter/2] |= smsc_crc(dev->net->dev_addr, ETH_ALEN, filter);
1560 filter++;
1561 }
1562
1563 for (i = 0; i < (wuff_filter_count * 4); i++) {
1564 ret = smsc95xx_write_reg_nopm(dev, WUFF, filter_mask[i]);
1565 if (ret < 0) {
1566 kfree(filter_mask);
1567 goto done;
1568 }
1569 }
1570 kfree(filter_mask);
1571
1572 for (i = 0; i < (wuff_filter_count / 4); i++) {
1573 ret = smsc95xx_write_reg_nopm(dev, WUFF, command[i]);
1574 if (ret < 0)
1575 goto done;
1576 }
1577
1578 for (i = 0; i < (wuff_filter_count / 4); i++) {
1579 ret = smsc95xx_write_reg_nopm(dev, WUFF, offset[i]);
1580 if (ret < 0)
1581 goto done;
1582 }
1583
1584 for (i = 0; i < (wuff_filter_count / 2); i++) {
1585 ret = smsc95xx_write_reg_nopm(dev, WUFF, crc[i]);
1586 if (ret < 0)
1587 goto done;
1588 }
1589
1590 /* clear any pending pattern match packet status */
1591 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1592 if (ret < 0)
1593 goto done;
1594
1595 val |= WUCSR_WUFR_;
1596
1597 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1598 if (ret < 0)
1599 goto done;
1600 }
1601
1602 if (pdata->wolopts & WAKE_MAGIC) {
1603 /* clear any pending magic packet status */
1604 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1605 if (ret < 0)
1606 goto done;
1607
1608 val |= WUCSR_MPR_;
1609
1610 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1611 if (ret < 0)
1612 goto done;
1613 }
1614
1615 /* enable/disable wakeup sources */
1616 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1617 if (ret < 0)
1618 goto done;
1619
1620 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
1621 netdev_info(dev->net, "enabling pattern match wakeup\n");
1622 val |= WUCSR_WAKE_EN_;
1623 } else {
1624 netdev_info(dev->net, "disabling pattern match wakeup\n");
1625 val &= ~WUCSR_WAKE_EN_;
1626 }
1627
1628 if (pdata->wolopts & WAKE_MAGIC) {
1629 netdev_info(dev->net, "enabling magic packet wakeup\n");
1630 val |= WUCSR_MPEN_;
1631 } else {
1632 netdev_info(dev->net, "disabling magic packet wakeup\n");
1633 val &= ~WUCSR_MPEN_;
1634 }
1635
1636 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1637 if (ret < 0)
1638 goto done;
1639
1640 /* enable wol wakeup source */
1641 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1642 if (ret < 0)
1643 goto done;
1644
1645 val |= PM_CTL_WOL_EN_;
1646
1647 /* phy energy detect wakeup source */
1648 if (pdata->wolopts & WAKE_PHY)
1649 val |= PM_CTL_ED_EN_;
1650
1651 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1652 if (ret < 0)
1653 goto done;
1654
1655 /* enable receiver to enable frame reception */
1656 smsc95xx_start_rx_path(dev, 1);
1657
1658 /* some wol options are enabled, so enter SUSPEND0 */
1659 netdev_info(dev->net, "entering SUSPEND0 mode\n");
1660 ret = smsc95xx_enter_suspend0(dev);
1661
1662 done:
1663 /*
1664 * TODO: resume() might need to handle the suspend failure
1665 * in system sleep
1666 */
1667 if (ret && PMSG_IS_AUTO(message))
1668 usbnet_resume(intf);
1669 return ret;
1670 }
1671
1672 static int smsc95xx_resume(struct usb_interface *intf)
1673 {
1674 struct usbnet *dev = usb_get_intfdata(intf);
1675 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1676 u8 suspend_flags = pdata->suspend_flags;
1677 int ret;
1678 u32 val;
1679
1680 BUG_ON(!dev);
1681
1682 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags);
1683
1684 /* do this first to ensure it's cleared even in error case */
1685 pdata->suspend_flags = 0;
1686
1687 if (suspend_flags & SUSPEND_ALLMODES) {
1688 /* clear wake-up sources */
1689 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1690 if (ret < 0)
1691 return ret;
1692
1693 val &= ~(WUCSR_WAKE_EN_ | WUCSR_MPEN_);
1694
1695 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1696 if (ret < 0)
1697 return ret;
1698
1699 /* clear wake-up status */
1700 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1701 if (ret < 0)
1702 return ret;
1703
1704 val &= ~PM_CTL_WOL_EN_;
1705 val |= PM_CTL_WUPS_;
1706
1707 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1708 if (ret < 0)
1709 return ret;
1710 }
1711
1712 ret = usbnet_resume(intf);
1713 if (ret < 0)
1714 netdev_warn(dev->net, "usbnet_resume error\n");
1715
1716 return ret;
1717 }
1718
1719 static void smsc95xx_rx_csum_offload(struct sk_buff *skb)
1720 {
1721 skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2);
1722 skb->ip_summed = CHECKSUM_COMPLETE;
1723 skb_trim(skb, skb->len - 2);
1724 }
1725
1726 static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
1727 {
1728 while (skb->len > 0) {
1729 u32 header, align_count;
1730 struct sk_buff *ax_skb;
1731 unsigned char *packet;
1732 u16 size;
1733
1734 memcpy(&header, skb->data, sizeof(header));
1735 le32_to_cpus(&header);
1736 skb_pull(skb, 4 + NET_IP_ALIGN);
1737 packet = skb->data;
1738
1739 /* get the packet length */
1740 size = (u16)((header & RX_STS_FL_) >> 16);
1741 align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4;
1742
1743 if (unlikely(header & RX_STS_ES_)) {
1744 netif_dbg(dev, rx_err, dev->net,
1745 "Error header=0x%08x\n", header);
1746 dev->net->stats.rx_errors++;
1747 dev->net->stats.rx_dropped++;
1748
1749 if (header & RX_STS_CRC_) {
1750 dev->net->stats.rx_crc_errors++;
1751 } else {
1752 if (header & (RX_STS_TL_ | RX_STS_RF_))
1753 dev->net->stats.rx_frame_errors++;
1754
1755 if ((header & RX_STS_LE_) &&
1756 (!(header & RX_STS_FT_)))
1757 dev->net->stats.rx_length_errors++;
1758 }
1759 } else {
1760 /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */
1761 if (unlikely(size > (ETH_FRAME_LEN + 12))) {
1762 netif_dbg(dev, rx_err, dev->net,
1763 "size err header=0x%08x\n", header);
1764 return 0;
1765 }
1766
1767 /* last frame in this batch */
1768 if (skb->len == size) {
1769 if (dev->net->features & NETIF_F_RXCSUM)
1770 smsc95xx_rx_csum_offload(skb);
1771 skb_trim(skb, skb->len - 4); /* remove fcs */
1772 skb->truesize = size + sizeof(struct sk_buff);
1773
1774 return 1;
1775 }
1776
1777 ax_skb = skb_clone(skb, GFP_ATOMIC);
1778 if (unlikely(!ax_skb)) {
1779 netdev_warn(dev->net, "Error allocating skb\n");
1780 return 0;
1781 }
1782
1783 ax_skb->len = size;
1784 ax_skb->data = packet;
1785 skb_set_tail_pointer(ax_skb, size);
1786
1787 if (dev->net->features & NETIF_F_RXCSUM)
1788 smsc95xx_rx_csum_offload(ax_skb);
1789 skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
1790 ax_skb->truesize = size + sizeof(struct sk_buff);
1791
1792 usbnet_skb_return(dev, ax_skb);
1793 }
1794
1795 skb_pull(skb, size);
1796
1797 /* padding bytes before the next frame starts */
1798 if (skb->len)
1799 skb_pull(skb, align_count);
1800 }
1801
1802 if (unlikely(skb->len < 0)) {
1803 netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len);
1804 return 0;
1805 }
1806
1807 return 1;
1808 }
1809
1810 static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb)
1811 {
1812 u16 low_16 = (u16)skb_checksum_start_offset(skb);
1813 u16 high_16 = low_16 + skb->csum_offset;
1814 return (high_16 << 16) | low_16;
1815 }
1816
1817 static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev,
1818 struct sk_buff *skb, gfp_t flags)
1819 {
1820 bool csum = skb->ip_summed == CHECKSUM_PARTIAL;
1821 int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD;
1822 u32 tx_cmd_a, tx_cmd_b;
1823
1824 /* We do not advertise SG, so skbs should be already linearized */
1825 BUG_ON(skb_shinfo(skb)->nr_frags);
1826
1827 if (skb_headroom(skb) < overhead) {
1828 struct sk_buff *skb2 = skb_copy_expand(skb,
1829 overhead, 0, flags);
1830 dev_kfree_skb_any(skb);
1831 skb = skb2;
1832 if (!skb)
1833 return NULL;
1834 }
1835
1836 if (csum) {
1837 if (skb->len <= 45) {
1838 /* workaround - hardware tx checksum does not work
1839 * properly with extremely small packets */
1840 long csstart = skb_checksum_start_offset(skb);
1841 __wsum calc = csum_partial(skb->data + csstart,
1842 skb->len - csstart, 0);
1843 *((__sum16 *)(skb->data + csstart
1844 + skb->csum_offset)) = csum_fold(calc);
1845
1846 csum = false;
1847 } else {
1848 u32 csum_preamble = smsc95xx_calc_csum_preamble(skb);
1849 skb_push(skb, 4);
1850 cpu_to_le32s(&csum_preamble);
1851 memcpy(skb->data, &csum_preamble, 4);
1852 }
1853 }
1854
1855 skb_push(skb, 4);
1856 tx_cmd_b = (u32)(skb->len - 4);
1857 if (csum)
1858 tx_cmd_b |= TX_CMD_B_CSUM_ENABLE;
1859 cpu_to_le32s(&tx_cmd_b);
1860 memcpy(skb->data, &tx_cmd_b, 4);
1861
1862 skb_push(skb, 4);
1863 tx_cmd_a = (u32)(skb->len - 8) | TX_CMD_A_FIRST_SEG_ |
1864 TX_CMD_A_LAST_SEG_;
1865 cpu_to_le32s(&tx_cmd_a);
1866 memcpy(skb->data, &tx_cmd_a, 4);
1867
1868 return skb;
1869 }
1870
1871 static int smsc95xx_manage_power(struct usbnet *dev, int on)
1872 {
1873 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1874
1875 dev->intf->needs_remote_wakeup = on;
1876
1877 if (pdata->features & FEATURE_REMOTE_WAKEUP)
1878 return 0;
1879
1880 /* this chip revision isn't capable of remote wakeup */
1881 netdev_info(dev->net, "hardware isn't capable of remote wakeup\n");
1882
1883 if (on)
1884 usb_autopm_get_interface_no_resume(dev->intf);
1885 else
1886 usb_autopm_put_interface(dev->intf);
1887
1888 return 0;
1889 }
1890
1891 static const struct driver_info smsc95xx_info = {
1892 .description = "smsc95xx USB 2.0 Ethernet",
1893 .bind = smsc95xx_bind,
1894 .unbind = smsc95xx_unbind,
1895 .link_reset = smsc95xx_link_reset,
1896 .reset = smsc95xx_reset,
1897 .rx_fixup = smsc95xx_rx_fixup,
1898 .tx_fixup = smsc95xx_tx_fixup,
1899 .status = smsc95xx_status,
1900 .manage_power = smsc95xx_manage_power,
1901 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
1902 };
1903
1904 static const struct usb_device_id products[] = {
1905 {
1906 /* SMSC9500 USB Ethernet Device */
1907 USB_DEVICE(0x0424, 0x9500),
1908 .driver_info = (unsigned long) &smsc95xx_info,
1909 },
1910 {
1911 /* SMSC9505 USB Ethernet Device */
1912 USB_DEVICE(0x0424, 0x9505),
1913 .driver_info = (unsigned long) &smsc95xx_info,
1914 },
1915 {
1916 /* SMSC9500A USB Ethernet Device */
1917 USB_DEVICE(0x0424, 0x9E00),
1918 .driver_info = (unsigned long) &smsc95xx_info,
1919 },
1920 {
1921 /* SMSC9505A USB Ethernet Device */
1922 USB_DEVICE(0x0424, 0x9E01),
1923 .driver_info = (unsigned long) &smsc95xx_info,
1924 },
1925 {
1926 /* SMSC9512/9514 USB Hub & Ethernet Device */
1927 USB_DEVICE(0x0424, 0xec00),
1928 .driver_info = (unsigned long) &smsc95xx_info,
1929 },
1930 {
1931 /* SMSC9500 USB Ethernet Device (SAL10) */
1932 USB_DEVICE(0x0424, 0x9900),
1933 .driver_info = (unsigned long) &smsc95xx_info,
1934 },
1935 {
1936 /* SMSC9505 USB Ethernet Device (SAL10) */
1937 USB_DEVICE(0x0424, 0x9901),
1938 .driver_info = (unsigned long) &smsc95xx_info,
1939 },
1940 {
1941 /* SMSC9500A USB Ethernet Device (SAL10) */
1942 USB_DEVICE(0x0424, 0x9902),
1943 .driver_info = (unsigned long) &smsc95xx_info,
1944 },
1945 {
1946 /* SMSC9505A USB Ethernet Device (SAL10) */
1947 USB_DEVICE(0x0424, 0x9903),
1948 .driver_info = (unsigned long) &smsc95xx_info,
1949 },
1950 {
1951 /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */
1952 USB_DEVICE(0x0424, 0x9904),
1953 .driver_info = (unsigned long) &smsc95xx_info,
1954 },
1955 {
1956 /* SMSC9500A USB Ethernet Device (HAL) */
1957 USB_DEVICE(0x0424, 0x9905),
1958 .driver_info = (unsigned long) &smsc95xx_info,
1959 },
1960 {
1961 /* SMSC9505A USB Ethernet Device (HAL) */
1962 USB_DEVICE(0x0424, 0x9906),
1963 .driver_info = (unsigned long) &smsc95xx_info,
1964 },
1965 {
1966 /* SMSC9500 USB Ethernet Device (Alternate ID) */
1967 USB_DEVICE(0x0424, 0x9907),
1968 .driver_info = (unsigned long) &smsc95xx_info,
1969 },
1970 {
1971 /* SMSC9500A USB Ethernet Device (Alternate ID) */
1972 USB_DEVICE(0x0424, 0x9908),
1973 .driver_info = (unsigned long) &smsc95xx_info,
1974 },
1975 {
1976 /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */
1977 USB_DEVICE(0x0424, 0x9909),
1978 .driver_info = (unsigned long) &smsc95xx_info,
1979 },
1980 {
1981 /* SMSC LAN9530 USB Ethernet Device */
1982 USB_DEVICE(0x0424, 0x9530),
1983 .driver_info = (unsigned long) &smsc95xx_info,
1984 },
1985 {
1986 /* SMSC LAN9730 USB Ethernet Device */
1987 USB_DEVICE(0x0424, 0x9730),
1988 .driver_info = (unsigned long) &smsc95xx_info,
1989 },
1990 {
1991 /* SMSC LAN89530 USB Ethernet Device */
1992 USB_DEVICE(0x0424, 0x9E08),
1993 .driver_info = (unsigned long) &smsc95xx_info,
1994 },
1995 { }, /* END */
1996 };
1997 MODULE_DEVICE_TABLE(usb, products);
1998
1999 static struct usb_driver smsc95xx_driver = {
2000 .name = "smsc95xx",
2001 .id_table = products,
2002 .probe = usbnet_probe,
2003 .suspend = smsc95xx_suspend,
2004 .resume = smsc95xx_resume,
2005 .reset_resume = smsc95xx_resume,
2006 .disconnect = usbnet_disconnect,
2007 .disable_hub_initiated_lpm = 1,
2008 .supports_autosuspend = 1,
2009 };
2010
2011 module_usb_driver(smsc95xx_driver);
2012
2013 MODULE_AUTHOR("Nancy Lin");
2014 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2015 MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices");
2016 MODULE_LICENSE("GPL");
Linus' kernel tree