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8#include <linux/module.h>
9#include <linux/kmod.h>
10#include <linux/netdevice.h>
11#include <linux/etherdevice.h>
12#include <linux/ethtool.h>
13#include <linux/mii.h>
14#include <linux/usb.h>
15#include <linux/bitrev.h>
16#include <linux/crc16.h>
17#include <linux/crc32.h>
18#include <linux/usb/usbnet.h>
19#include <linux/slab.h>
20#include <linux/of_net.h>
21#include "smsc95xx.h"
22
23#define SMSC_CHIPNAME "smsc95xx"
24#define SMSC_DRIVER_VERSION "1.0.6"
25#define HS_USB_PKT_SIZE (512)
26#define FS_USB_PKT_SIZE (64)
27#define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
28#define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE)
29#define DEFAULT_BULK_IN_DELAY (0x00002000)
30#define MAX_SINGLE_PACKET_SIZE (2048)
31#define LAN95XX_EEPROM_MAGIC (0x9500)
32#define EEPROM_MAC_OFFSET (0x01)
33#define DEFAULT_TX_CSUM_ENABLE (true)
34#define DEFAULT_RX_CSUM_ENABLE (true)
35#define SMSC95XX_INTERNAL_PHY_ID (1)
36#define SMSC95XX_TX_OVERHEAD (8)
37#define SMSC95XX_TX_OVERHEAD_CSUM (12)
38#define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \
39 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
40
41#define FEATURE_8_WAKEUP_FILTERS (0x01)
42#define FEATURE_PHY_NLP_CROSSOVER (0x02)
43#define FEATURE_REMOTE_WAKEUP (0x04)
44
45#define SUSPEND_SUSPEND0 (0x01)
46#define SUSPEND_SUSPEND1 (0x02)
47#define SUSPEND_SUSPEND2 (0x04)
48#define SUSPEND_SUSPEND3 (0x08)
49#define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
50 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
51
52#define CARRIER_CHECK_DELAY (2 * HZ)
53
54struct smsc95xx_priv {
55 u32 chip_id;
56 u32 mac_cr;
57 u32 hash_hi;
58 u32 hash_lo;
59 u32 wolopts;
60 spinlock_t mac_cr_lock;
61 u8 features;
62 u8 suspend_flags;
63 u8 mdix_ctrl;
64 bool link_ok;
65 struct delayed_work carrier_check;
66 struct usbnet *dev;
67};
68
69static bool turbo_mode = true;
70module_param(turbo_mode, bool, 0644);
71MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
72
73static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
74 u32 *data, int in_pm)
75{
76 u32 buf;
77 int ret;
78 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
79
80 BUG_ON(!dev);
81
82 if (!in_pm)
83 fn = usbnet_read_cmd;
84 else
85 fn = usbnet_read_cmd_nopm;
86
87 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
88 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
89 0, index, &buf, 4);
90 if (unlikely(ret < 0)) {
91 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
92 index, ret);
93 return ret;
94 }
95
96 le32_to_cpus(&buf);
97 *data = buf;
98
99 return ret;
100}
101
102static int __must_check __smsc95xx_write_reg(struct usbnet *dev, u32 index,
103 u32 data, int in_pm)
104{
105 u32 buf;
106 int ret;
107 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
108
109 BUG_ON(!dev);
110
111 if (!in_pm)
112 fn = usbnet_write_cmd;
113 else
114 fn = usbnet_write_cmd_nopm;
115
116 buf = data;
117 cpu_to_le32s(&buf);
118
119 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT
120 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
121 0, index, &buf, 4);
122 if (unlikely(ret < 0))
123 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n",
124 index, ret);
125
126 return ret;
127}
128
129static int __must_check smsc95xx_read_reg_nopm(struct usbnet *dev, u32 index,
130 u32 *data)
131{
132 return __smsc95xx_read_reg(dev, index, data, 1);
133}
134
135static int __must_check smsc95xx_write_reg_nopm(struct usbnet *dev, u32 index,
136 u32 data)
137{
138 return __smsc95xx_write_reg(dev, index, data, 1);
139}
140
141static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index,
142 u32 *data)
143{
144 return __smsc95xx_read_reg(dev, index, data, 0);
145}
146
147static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index,
148 u32 data)
149{
150 return __smsc95xx_write_reg(dev, index, data, 0);
151}
152
153
154
155static int __must_check __smsc95xx_phy_wait_not_busy(struct usbnet *dev,
156 int in_pm)
157{
158 unsigned long start_time = jiffies;
159 u32 val;
160 int ret;
161
162 do {
163 ret = __smsc95xx_read_reg(dev, MII_ADDR, &val, in_pm);
164 if (ret < 0) {
165 netdev_warn(dev->net, "Error reading MII_ACCESS\n");
166 return ret;
167 }
168
169 if (!(val & MII_BUSY_))
170 return 0;
171 } while (!time_after(jiffies, start_time + HZ));
172
173 return -EIO;
174}
175
176static int __smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx,
177 int in_pm)
178{
179 struct usbnet *dev = netdev_priv(netdev);
180 u32 val, addr;
181 int ret;
182
183 mutex_lock(&dev->phy_mutex);
184
185
186 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
187 if (ret < 0) {
188 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_read\n");
189 goto done;
190 }
191
192
193 phy_id &= dev->mii.phy_id_mask;
194 idx &= dev->mii.reg_num_mask;
195 addr = (phy_id << 11) | (idx << 6) | MII_READ_ | MII_BUSY_;
196 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm);
197 if (ret < 0) {
198 netdev_warn(dev->net, "Error writing MII_ADDR\n");
199 goto done;
200 }
201
202 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
203 if (ret < 0) {
204 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx);
205 goto done;
206 }
207
208 ret = __smsc95xx_read_reg(dev, MII_DATA, &val, in_pm);
209 if (ret < 0) {
210 netdev_warn(dev->net, "Error reading MII_DATA\n");
211 goto done;
212 }
213
214 ret = (u16)(val & 0xFFFF);
215
216done:
217 mutex_unlock(&dev->phy_mutex);
218 return ret;
219}
220
221static void __smsc95xx_mdio_write(struct net_device *netdev, int phy_id,
222 int idx, int regval, int in_pm)
223{
224 struct usbnet *dev = netdev_priv(netdev);
225 u32 val, addr;
226 int ret;
227
228 mutex_lock(&dev->phy_mutex);
229
230
231 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
232 if (ret < 0) {
233 netdev_warn(dev->net, "MII is busy in smsc95xx_mdio_write\n");
234 goto done;
235 }
236
237 val = regval;
238 ret = __smsc95xx_write_reg(dev, MII_DATA, val, in_pm);
239 if (ret < 0) {
240 netdev_warn(dev->net, "Error writing MII_DATA\n");
241 goto done;
242 }
243
244
245 phy_id &= dev->mii.phy_id_mask;
246 idx &= dev->mii.reg_num_mask;
247 addr = (phy_id << 11) | (idx << 6) | MII_WRITE_ | MII_BUSY_;
248 ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm);
249 if (ret < 0) {
250 netdev_warn(dev->net, "Error writing MII_ADDR\n");
251 goto done;
252 }
253
254 ret = __smsc95xx_phy_wait_not_busy(dev, in_pm);
255 if (ret < 0) {
256 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx);
257 goto done;
258 }
259
260done:
261 mutex_unlock(&dev->phy_mutex);
262}
263
264static int smsc95xx_mdio_read_nopm(struct net_device *netdev, int phy_id,
265 int idx)
266{
267 return __smsc95xx_mdio_read(netdev, phy_id, idx, 1);
268}
269
270static void smsc95xx_mdio_write_nopm(struct net_device *netdev, int phy_id,
271 int idx, int regval)
272{
273 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 1);
274}
275
276static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
277{
278 return __smsc95xx_mdio_read(netdev, phy_id, idx, 0);
279}
280
281static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
282 int regval)
283{
284 __smsc95xx_mdio_write(netdev, phy_id, idx, regval, 0);
285}
286
287static int __must_check smsc95xx_wait_eeprom(struct usbnet *dev)
288{
289 unsigned long start_time = jiffies;
290 u32 val;
291 int ret;
292
293 do {
294 ret = smsc95xx_read_reg(dev, E2P_CMD, &val);
295 if (ret < 0) {
296 netdev_warn(dev->net, "Error reading E2P_CMD\n");
297 return ret;
298 }
299
300 if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_))
301 break;
302 udelay(40);
303 } while (!time_after(jiffies, start_time + HZ));
304
305 if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) {
306 netdev_warn(dev->net, "EEPROM read operation timeout\n");
307 return -EIO;
308 }
309
310 return 0;
311}
312
313static int __must_check smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev)
314{
315 unsigned long start_time = jiffies;
316 u32 val;
317 int ret;
318
319 do {
320 ret = smsc95xx_read_reg(dev, E2P_CMD, &val);
321 if (ret < 0) {
322 netdev_warn(dev->net, "Error reading E2P_CMD\n");
323 return ret;
324 }
325
326 if (!(val & E2P_CMD_BUSY_))
327 return 0;
328
329 udelay(40);
330 } while (!time_after(jiffies, start_time + HZ));
331
332 netdev_warn(dev->net, "EEPROM is busy\n");
333 return -EIO;
334}
335
336static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
337 u8 *data)
338{
339 u32 val;
340 int i, ret;
341
342 BUG_ON(!dev);
343 BUG_ON(!data);
344
345 ret = smsc95xx_eeprom_confirm_not_busy(dev);
346 if (ret)
347 return ret;
348
349 for (i = 0; i < length; i++) {
350 val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_);
351 ret = smsc95xx_write_reg(dev, E2P_CMD, val);
352 if (ret < 0) {
353 netdev_warn(dev->net, "Error writing E2P_CMD\n");
354 return ret;
355 }
356
357 ret = smsc95xx_wait_eeprom(dev);
358 if (ret < 0)
359 return ret;
360
361 ret = smsc95xx_read_reg(dev, E2P_DATA, &val);
362 if (ret < 0) {
363 netdev_warn(dev->net, "Error reading E2P_DATA\n");
364 return ret;
365 }
366
367 data[i] = val & 0xFF;
368 offset++;
369 }
370
371 return 0;
372}
373
374static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
375 u8 *data)
376{
377 u32 val;
378 int i, ret;
379
380 BUG_ON(!dev);
381 BUG_ON(!data);
382
383 ret = smsc95xx_eeprom_confirm_not_busy(dev);
384 if (ret)
385 return ret;
386
387
388 val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_;
389 ret = smsc95xx_write_reg(dev, E2P_CMD, val);
390 if (ret < 0) {
391 netdev_warn(dev->net, "Error writing E2P_DATA\n");
392 return ret;
393 }
394
395 ret = smsc95xx_wait_eeprom(dev);
396 if (ret < 0)
397 return ret;
398
399 for (i = 0; i < length; i++) {
400
401
402 val = data[i];
403 ret = smsc95xx_write_reg(dev, E2P_DATA, val);
404 if (ret < 0) {
405 netdev_warn(dev->net, "Error writing E2P_DATA\n");
406 return ret;
407 }
408
409
410 val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_);
411 ret = smsc95xx_write_reg(dev, E2P_CMD, val);
412 if (ret < 0) {
413 netdev_warn(dev->net, "Error writing E2P_CMD\n");
414 return ret;
415 }
416
417 ret = smsc95xx_wait_eeprom(dev);
418 if (ret < 0)
419 return ret;
420
421 offset++;
422 }
423
424 return 0;
425}
426
427static int __must_check smsc95xx_write_reg_async(struct usbnet *dev, u16 index,
428 u32 data)
429{
430 const u16 size = 4;
431 u32 buf;
432 int ret;
433
434 buf = data;
435 cpu_to_le32s(&buf);
436
437 ret = usbnet_write_cmd_async(dev, USB_VENDOR_REQUEST_WRITE_REGISTER,
438 USB_DIR_OUT | USB_TYPE_VENDOR |
439 USB_RECIP_DEVICE,
440 0, index, &buf, size);
441 if (ret < 0)
442 netdev_warn(dev->net, "Error write async cmd, sts=%d\n",
443 ret);
444 return ret;
445}
446
447
448
449
450static unsigned int smsc95xx_hash(char addr[ETH_ALEN])
451{
452 return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f;
453}
454
455static void smsc95xx_set_multicast(struct net_device *netdev)
456{
457 struct usbnet *dev = netdev_priv(netdev);
458 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
459 unsigned long flags;
460 int ret;
461
462 pdata->hash_hi = 0;
463 pdata->hash_lo = 0;
464
465 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
466
467 if (dev->net->flags & IFF_PROMISC) {
468 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n");
469 pdata->mac_cr |= MAC_CR_PRMS_;
470 pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
471 } else if (dev->net->flags & IFF_ALLMULTI) {
472 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n");
473 pdata->mac_cr |= MAC_CR_MCPAS_;
474 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_);
475 } else if (!netdev_mc_empty(dev->net)) {
476 struct netdev_hw_addr *ha;
477
478 pdata->mac_cr |= MAC_CR_HPFILT_;
479 pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_);
480
481 netdev_for_each_mc_addr(ha, netdev) {
482 u32 bitnum = smsc95xx_hash(ha->addr);
483 u32 mask = 0x01 << (bitnum & 0x1F);
484 if (bitnum & 0x20)
485 pdata->hash_hi |= mask;
486 else
487 pdata->hash_lo |= mask;
488 }
489
490 netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n",
491 pdata->hash_hi, pdata->hash_lo);
492 } else {
493 netif_dbg(dev, drv, dev->net, "receive own packets only\n");
494 pdata->mac_cr &=
495 ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
496 }
497
498 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
499
500
501 ret = smsc95xx_write_reg_async(dev, HASHH, pdata->hash_hi);
502 if (ret < 0)
503 netdev_warn(dev->net, "failed to initiate async write to HASHH\n");
504
505 ret = smsc95xx_write_reg_async(dev, HASHL, pdata->hash_lo);
506 if (ret < 0)
507 netdev_warn(dev->net, "failed to initiate async write to HASHL\n");
508
509 ret = smsc95xx_write_reg_async(dev, MAC_CR, pdata->mac_cr);
510 if (ret < 0)
511 netdev_warn(dev->net, "failed to initiate async write to MAC_CR\n");
512}
513
514static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex,
515 u16 lcladv, u16 rmtadv)
516{
517 u32 flow = 0, afc_cfg;
518
519 int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg);
520 if (ret < 0)
521 return ret;
522
523 if (duplex == DUPLEX_FULL) {
524 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
525
526 if (cap & FLOW_CTRL_RX)
527 flow = 0xFFFF0002;
528
529 if (cap & FLOW_CTRL_TX) {
530 afc_cfg |= 0xF;
531 flow |= 0xFFFF0000;
532 } else {
533 afc_cfg &= ~0xF;
534 }
535
536 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n",
537 cap & FLOW_CTRL_RX ? "enabled" : "disabled",
538 cap & FLOW_CTRL_TX ? "enabled" : "disabled");
539 } else {
540 netif_dbg(dev, link, dev->net, "half duplex\n");
541 afc_cfg |= 0xF;
542 }
543
544 ret = smsc95xx_write_reg(dev, FLOW, flow);
545 if (ret < 0)
546 return ret;
547
548 return smsc95xx_write_reg(dev, AFC_CFG, afc_cfg);
549}
550
551static int smsc95xx_link_reset(struct usbnet *dev)
552{
553 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
554 struct mii_if_info *mii = &dev->mii;
555 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
556 unsigned long flags;
557 u16 lcladv, rmtadv;
558 int ret;
559
560
561 ret = smsc95xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC);
562 if (ret < 0)
563 return ret;
564
565 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
566 if (ret < 0)
567 return ret;
568
569 mii_check_media(mii, 1, 1);
570 mii_ethtool_gset(&dev->mii, &ecmd);
571 lcladv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
572 rmtadv = smsc95xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
573
574 netif_dbg(dev, link, dev->net,
575 "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
576 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv);
577
578 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
579 if (ecmd.duplex != DUPLEX_FULL) {
580 pdata->mac_cr &= ~MAC_CR_FDPX_;
581 pdata->mac_cr |= MAC_CR_RCVOWN_;
582 } else {
583 pdata->mac_cr &= ~MAC_CR_RCVOWN_;
584 pdata->mac_cr |= MAC_CR_FDPX_;
585 }
586 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
587
588 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
589 if (ret < 0)
590 return ret;
591
592 ret = smsc95xx_phy_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
593 if (ret < 0)
594 netdev_warn(dev->net, "Error updating PHY flow control\n");
595
596 return ret;
597}
598
599static void smsc95xx_status(struct usbnet *dev, struct urb *urb)
600{
601 u32 intdata;
602
603 if (urb->actual_length != 4) {
604 netdev_warn(dev->net, "unexpected urb length %d\n",
605 urb->actual_length);
606 return;
607 }
608
609 intdata = get_unaligned_le32(urb->transfer_buffer);
610 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
611
612 if (intdata & INT_ENP_PHY_INT_)
613 usbnet_defer_kevent(dev, EVENT_LINK_RESET);
614 else
615 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n",
616 intdata);
617}
618
619static void set_carrier(struct usbnet *dev, bool link)
620{
621 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
622
623 if (pdata->link_ok == link)
624 return;
625
626 pdata->link_ok = link;
627
628 if (link)
629 usbnet_link_change(dev, 1, 0);
630 else
631 usbnet_link_change(dev, 0, 0);
632}
633
634static void check_carrier(struct work_struct *work)
635{
636 struct smsc95xx_priv *pdata = container_of(work, struct smsc95xx_priv,
637 carrier_check.work);
638 struct usbnet *dev = pdata->dev;
639 int ret;
640
641 if (pdata->suspend_flags != 0)
642 return;
643
644 ret = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMSR);
645 if (ret < 0) {
646 netdev_warn(dev->net, "Failed to read MII_BMSR\n");
647 return;
648 }
649 if (ret & BMSR_LSTATUS)
650 set_carrier(dev, 1);
651 else
652 set_carrier(dev, 0);
653
654 schedule_delayed_work(&pdata->carrier_check, CARRIER_CHECK_DELAY);
655}
656
657
658static int smsc95xx_set_features(struct net_device *netdev,
659 netdev_features_t features)
660{
661 struct usbnet *dev = netdev_priv(netdev);
662 u32 read_buf;
663 int ret;
664
665 ret = smsc95xx_read_reg(dev, COE_CR, &read_buf);
666 if (ret < 0)
667 return ret;
668
669 if (features & NETIF_F_IP_CSUM)
670 read_buf |= Tx_COE_EN_;
671 else
672 read_buf &= ~Tx_COE_EN_;
673
674 if (features & NETIF_F_RXCSUM)
675 read_buf |= Rx_COE_EN_;
676 else
677 read_buf &= ~Rx_COE_EN_;
678
679 ret = smsc95xx_write_reg(dev, COE_CR, read_buf);
680 if (ret < 0)
681 return ret;
682
683 netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf);
684 return 0;
685}
686
687static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net)
688{
689 return MAX_EEPROM_SIZE;
690}
691
692static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev,
693 struct ethtool_eeprom *ee, u8 *data)
694{
695 struct usbnet *dev = netdev_priv(netdev);
696
697 ee->magic = LAN95XX_EEPROM_MAGIC;
698
699 return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data);
700}
701
702static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev,
703 struct ethtool_eeprom *ee, u8 *data)
704{
705 struct usbnet *dev = netdev_priv(netdev);
706
707 if (ee->magic != LAN95XX_EEPROM_MAGIC) {
708 netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n",
709 ee->magic);
710 return -EINVAL;
711 }
712
713 return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data);
714}
715
716static int smsc95xx_ethtool_getregslen(struct net_device *netdev)
717{
718
719 return COE_CR - ID_REV + sizeof(u32);
720}
721
722static void
723smsc95xx_ethtool_getregs(struct net_device *netdev, struct ethtool_regs *regs,
724 void *buf)
725{
726 struct usbnet *dev = netdev_priv(netdev);
727 unsigned int i, j;
728 int retval;
729 u32 *data = buf;
730
731 retval = smsc95xx_read_reg(dev, ID_REV, ®s->version);
732 if (retval < 0) {
733 netdev_warn(netdev, "REGS: cannot read ID_REV\n");
734 return;
735 }
736
737 for (i = ID_REV, j = 0; i <= COE_CR; i += (sizeof(u32)), j++) {
738 retval = smsc95xx_read_reg(dev, i, &data[j]);
739 if (retval < 0) {
740 netdev_warn(netdev, "REGS: cannot read reg[%x]\n", i);
741 return;
742 }
743 }
744}
745
746static void smsc95xx_ethtool_get_wol(struct net_device *net,
747 struct ethtool_wolinfo *wolinfo)
748{
749 struct usbnet *dev = netdev_priv(net);
750 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
751
752 wolinfo->supported = SUPPORTED_WAKE;
753 wolinfo->wolopts = pdata->wolopts;
754}
755
756static int smsc95xx_ethtool_set_wol(struct net_device *net,
757 struct ethtool_wolinfo *wolinfo)
758{
759 struct usbnet *dev = netdev_priv(net);
760 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
761 int ret;
762
763 if (wolinfo->wolopts & ~SUPPORTED_WAKE)
764 return -EINVAL;
765
766 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
767
768 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
769 if (ret < 0)
770 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret);
771
772 return ret;
773}
774
775static int get_mdix_status(struct net_device *net)
776{
777 struct usbnet *dev = netdev_priv(net);
778 u32 val;
779 int buf;
780
781 buf = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, SPECIAL_CTRL_STS);
782 if (buf & SPECIAL_CTRL_STS_OVRRD_AMDIX_) {
783 if (buf & SPECIAL_CTRL_STS_AMDIX_ENABLE_)
784 return ETH_TP_MDI_AUTO;
785 else if (buf & SPECIAL_CTRL_STS_AMDIX_STATE_)
786 return ETH_TP_MDI_X;
787 } else {
788 buf = smsc95xx_read_reg(dev, STRAP_STATUS, &val);
789 if (val & STRAP_STATUS_AMDIX_EN_)
790 return ETH_TP_MDI_AUTO;
791 }
792
793 return ETH_TP_MDI;
794}
795
796static void set_mdix_status(struct net_device *net, __u8 mdix_ctrl)
797{
798 struct usbnet *dev = netdev_priv(net);
799 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
800 int buf;
801
802 if ((pdata->chip_id == ID_REV_CHIP_ID_9500A_) ||
803 (pdata->chip_id == ID_REV_CHIP_ID_9530_) ||
804 (pdata->chip_id == ID_REV_CHIP_ID_89530_) ||
805 (pdata->chip_id == ID_REV_CHIP_ID_9730_)) {
806
807 buf = smsc95xx_mdio_read(dev->net, dev->mii.phy_id,
808 PHY_EDPD_CONFIG);
809 buf |= PHY_EDPD_CONFIG_EXT_CROSSOVER_;
810 smsc95xx_mdio_write(dev->net, dev->mii.phy_id,
811 PHY_EDPD_CONFIG, buf);
812 }
813
814 if (mdix_ctrl == ETH_TP_MDI) {
815 buf = smsc95xx_mdio_read(dev->net, dev->mii.phy_id,
816 SPECIAL_CTRL_STS);
817 buf |= SPECIAL_CTRL_STS_OVRRD_AMDIX_;
818 buf &= ~(SPECIAL_CTRL_STS_AMDIX_ENABLE_ |
819 SPECIAL_CTRL_STS_AMDIX_STATE_);
820 smsc95xx_mdio_write(dev->net, dev->mii.phy_id,
821 SPECIAL_CTRL_STS, buf);
822 } else if (mdix_ctrl == ETH_TP_MDI_X) {
823 buf = smsc95xx_mdio_read(dev->net, dev->mii.phy_id,
824 SPECIAL_CTRL_STS);
825 buf |= SPECIAL_CTRL_STS_OVRRD_AMDIX_;
826 buf &= ~(SPECIAL_CTRL_STS_AMDIX_ENABLE_ |
827 SPECIAL_CTRL_STS_AMDIX_STATE_);
828 buf |= SPECIAL_CTRL_STS_AMDIX_STATE_;
829 smsc95xx_mdio_write(dev->net, dev->mii.phy_id,
830 SPECIAL_CTRL_STS, buf);
831 } else if (mdix_ctrl == ETH_TP_MDI_AUTO) {
832 buf = smsc95xx_mdio_read(dev->net, dev->mii.phy_id,
833 SPECIAL_CTRL_STS);
834 buf &= ~SPECIAL_CTRL_STS_OVRRD_AMDIX_;
835 buf &= ~(SPECIAL_CTRL_STS_AMDIX_ENABLE_ |
836 SPECIAL_CTRL_STS_AMDIX_STATE_);
837 buf |= SPECIAL_CTRL_STS_AMDIX_ENABLE_;
838 smsc95xx_mdio_write(dev->net, dev->mii.phy_id,
839 SPECIAL_CTRL_STS, buf);
840 }
841 pdata->mdix_ctrl = mdix_ctrl;
842}
843
844static int smsc95xx_get_link_ksettings(struct net_device *net,
845 struct ethtool_link_ksettings *cmd)
846{
847 struct usbnet *dev = netdev_priv(net);
848 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
849 int retval;
850
851 retval = usbnet_get_link_ksettings(net, cmd);
852
853 cmd->base.eth_tp_mdix = pdata->mdix_ctrl;
854 cmd->base.eth_tp_mdix_ctrl = pdata->mdix_ctrl;
855
856 return retval;
857}
858
859static int smsc95xx_set_link_ksettings(struct net_device *net,
860 const struct ethtool_link_ksettings *cmd)
861{
862 struct usbnet *dev = netdev_priv(net);
863 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
864 int retval;
865
866 if (pdata->mdix_ctrl != cmd->base.eth_tp_mdix_ctrl)
867 set_mdix_status(net, cmd->base.eth_tp_mdix_ctrl);
868
869 retval = usbnet_set_link_ksettings(net, cmd);
870
871 return retval;
872}
873
874static const struct ethtool_ops smsc95xx_ethtool_ops = {
875 .get_link = usbnet_get_link,
876 .nway_reset = usbnet_nway_reset,
877 .get_drvinfo = usbnet_get_drvinfo,
878 .get_msglevel = usbnet_get_msglevel,
879 .set_msglevel = usbnet_set_msglevel,
880 .get_eeprom_len = smsc95xx_ethtool_get_eeprom_len,
881 .get_eeprom = smsc95xx_ethtool_get_eeprom,
882 .set_eeprom = smsc95xx_ethtool_set_eeprom,
883 .get_regs_len = smsc95xx_ethtool_getregslen,
884 .get_regs = smsc95xx_ethtool_getregs,
885 .get_wol = smsc95xx_ethtool_get_wol,
886 .set_wol = smsc95xx_ethtool_set_wol,
887 .get_link_ksettings = smsc95xx_get_link_ksettings,
888 .set_link_ksettings = smsc95xx_set_link_ksettings,
889 .get_ts_info = ethtool_op_get_ts_info,
890};
891
892static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
893{
894 struct usbnet *dev = netdev_priv(netdev);
895
896 if (!netif_running(netdev))
897 return -EINVAL;
898
899 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
900}
901
902static void smsc95xx_init_mac_address(struct usbnet *dev)
903{
904 const u8 *mac_addr;
905
906
907 mac_addr = of_get_mac_address(dev->udev->dev.of_node);
908 if (!IS_ERR(mac_addr)) {
909 ether_addr_copy(dev->net->dev_addr, mac_addr);
910 return;
911 }
912
913
914 if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
915 dev->net->dev_addr) == 0) {
916 if (is_valid_ether_addr(dev->net->dev_addr)) {
917
918 netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n");
919 return;
920 }
921 }
922
923
924 eth_hw_addr_random(dev->net);
925 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
926}
927
928static int smsc95xx_set_mac_address(struct usbnet *dev)
929{
930 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
931 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
932 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
933 int ret;
934
935 ret = smsc95xx_write_reg(dev, ADDRL, addr_lo);
936 if (ret < 0)
937 return ret;
938
939 return smsc95xx_write_reg(dev, ADDRH, addr_hi);
940}
941
942
943static int smsc95xx_start_tx_path(struct usbnet *dev)
944{
945 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
946 unsigned long flags;
947 int ret;
948
949
950 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
951 pdata->mac_cr |= MAC_CR_TXEN_;
952 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
953
954 ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
955 if (ret < 0)
956 return ret;
957
958
959 return smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_);
960}
961
962
963static int smsc95xx_start_rx_path(struct usbnet *dev, int in_pm)
964{
965 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
966 unsigned long flags;
967
968 spin_lock_irqsave(&pdata->mac_cr_lock, flags);
969 pdata->mac_cr |= MAC_CR_RXEN_;
970 spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
971
972 return __smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr, in_pm);
973}
974
975static int smsc95xx_phy_initialize(struct usbnet *dev)
976{
977 int bmcr, ret, timeout = 0;
978
979
980 dev->mii.dev = dev->net;
981 dev->mii.mdio_read = smsc95xx_mdio_read;
982 dev->mii.mdio_write = smsc95xx_mdio_write;
983 dev->mii.phy_id_mask = 0x1f;
984 dev->mii.reg_num_mask = 0x1f;
985 dev->mii.phy_id = SMSC95XX_INTERNAL_PHY_ID;
986
987
988 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
989
990 do {
991 msleep(10);
992 bmcr = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
993 timeout++;
994 } while ((bmcr & BMCR_RESET) && (timeout < 100));
995
996 if (timeout >= 100) {
997 netdev_warn(dev->net, "timeout on PHY Reset");
998 return -EIO;
999 }
1000
1001 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
1002 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
1003 ADVERTISE_PAUSE_ASYM);
1004
1005
1006 ret = smsc95xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
1007 if (ret < 0) {
1008 netdev_warn(dev->net, "Failed to read PHY_INT_SRC during init\n");
1009 return ret;
1010 }
1011
1012 smsc95xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
1013 PHY_INT_MASK_DEFAULT_);
1014 mii_nway_restart(&dev->mii);
1015
1016 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n");
1017 return 0;
1018}
1019
1020static int smsc95xx_reset(struct usbnet *dev)
1021{
1022 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1023 u32 read_buf, write_buf, burst_cap;
1024 int ret = 0, timeout;
1025
1026 netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n");
1027
1028 ret = smsc95xx_write_reg(dev, HW_CFG, HW_CFG_LRST_);
1029 if (ret < 0)
1030 return ret;
1031
1032 timeout = 0;
1033 do {
1034 msleep(10);
1035 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
1036 if (ret < 0)
1037 return ret;
1038 timeout++;
1039 } while ((read_buf & HW_CFG_LRST_) && (timeout < 100));
1040
1041 if (timeout >= 100) {
1042 netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n");
1043 return ret;
1044 }
1045
1046 ret = smsc95xx_write_reg(dev, PM_CTRL, PM_CTL_PHY_RST_);
1047 if (ret < 0)
1048 return ret;
1049
1050 timeout = 0;
1051 do {
1052 msleep(10);
1053 ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf);
1054 if (ret < 0)
1055 return ret;
1056 timeout++;
1057 } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100));
1058
1059 if (timeout >= 100) {
1060 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1061 return ret;
1062 }
1063
1064 ret = smsc95xx_set_mac_address(dev);
1065 if (ret < 0)
1066 return ret;
1067
1068 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
1069 dev->net->dev_addr);
1070
1071 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
1072 if (ret < 0)
1073 return ret;
1074
1075 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
1076 read_buf);
1077
1078 read_buf |= HW_CFG_BIR_;
1079
1080 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
1081 if (ret < 0)
1082 return ret;
1083
1084 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
1085 if (ret < 0)
1086 return ret;
1087
1088 netif_dbg(dev, ifup, dev->net,
1089 "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n",
1090 read_buf);
1091
1092 if (!turbo_mode) {
1093 burst_cap = 0;
1094 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
1095 } else if (dev->udev->speed == USB_SPEED_HIGH) {
1096 burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
1097 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
1098 } else {
1099 burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
1100 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
1101 }
1102
1103 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
1104 (ulong)dev->rx_urb_size);
1105
1106 ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap);
1107 if (ret < 0)
1108 return ret;
1109
1110 ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf);
1111 if (ret < 0)
1112 return ret;
1113
1114 netif_dbg(dev, ifup, dev->net,
1115 "Read Value from BURST_CAP after writing: 0x%08x\n",
1116 read_buf);
1117
1118 ret = smsc95xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
1119 if (ret < 0)
1120 return ret;
1121
1122 ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf);
1123 if (ret < 0)
1124 return ret;
1125
1126 netif_dbg(dev, ifup, dev->net,
1127 "Read Value from BULK_IN_DLY after writing: 0x%08x\n",
1128 read_buf);
1129
1130 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
1131 if (ret < 0)
1132 return ret;
1133
1134 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG: 0x%08x\n",
1135 read_buf);
1136
1137 if (turbo_mode)
1138 read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_);
1139
1140 read_buf &= ~HW_CFG_RXDOFF_;
1141
1142
1143 read_buf |= NET_IP_ALIGN << 9;
1144
1145 ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
1146 if (ret < 0)
1147 return ret;
1148
1149 ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
1150 if (ret < 0)
1151 return ret;
1152
1153 netif_dbg(dev, ifup, dev->net,
1154 "Read Value from HW_CFG after writing: 0x%08x\n", read_buf);
1155
1156 ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
1157 if (ret < 0)
1158 return ret;
1159
1160 ret = smsc95xx_read_reg(dev, ID_REV, &read_buf);
1161 if (ret < 0)
1162 return ret;
1163 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf);
1164
1165
1166 write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED |
1167 LED_GPIO_CFG_FDX_LED;
1168 ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf);
1169 if (ret < 0)
1170 return ret;
1171
1172
1173 ret = smsc95xx_write_reg(dev, FLOW, 0);
1174 if (ret < 0)
1175 return ret;
1176
1177 ret = smsc95xx_write_reg(dev, AFC_CFG, AFC_CFG_DEFAULT);
1178 if (ret < 0)
1179 return ret;
1180
1181
1182 ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr);
1183 if (ret < 0)
1184 return ret;
1185
1186
1187
1188 ret = smsc95xx_write_reg(dev, VLAN1, (u32)ETH_P_8021Q);
1189 if (ret < 0)
1190 return ret;
1191
1192
1193 ret = smsc95xx_set_features(dev->net, dev->net->features);
1194 if (ret < 0) {
1195 netdev_warn(dev->net, "Failed to set checksum offload features\n");
1196 return ret;
1197 }
1198
1199 smsc95xx_set_multicast(dev->net);
1200
1201 ret = smsc95xx_phy_initialize(dev);
1202 if (ret < 0) {
1203 netdev_warn(dev->net, "Failed to init PHY\n");
1204 return ret;
1205 }
1206
1207 ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf);
1208 if (ret < 0)
1209 return ret;
1210
1211
1212 read_buf |= INT_EP_CTL_PHY_INT_;
1213
1214 ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf);
1215 if (ret < 0)
1216 return ret;
1217
1218 ret = smsc95xx_start_tx_path(dev);
1219 if (ret < 0) {
1220 netdev_warn(dev->net, "Failed to start TX path\n");
1221 return ret;
1222 }
1223
1224 ret = smsc95xx_start_rx_path(dev, 0);
1225 if (ret < 0) {
1226 netdev_warn(dev->net, "Failed to start RX path\n");
1227 return ret;
1228 }
1229
1230 netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n");
1231 return 0;
1232}
1233
1234static const struct net_device_ops smsc95xx_netdev_ops = {
1235 .ndo_open = usbnet_open,
1236 .ndo_stop = usbnet_stop,
1237 .ndo_start_xmit = usbnet_start_xmit,
1238 .ndo_tx_timeout = usbnet_tx_timeout,
1239 .ndo_change_mtu = usbnet_change_mtu,
1240 .ndo_get_stats64 = usbnet_get_stats64,
1241 .ndo_set_mac_address = eth_mac_addr,
1242 .ndo_validate_addr = eth_validate_addr,
1243 .ndo_do_ioctl = smsc95xx_ioctl,
1244 .ndo_set_rx_mode = smsc95xx_set_multicast,
1245 .ndo_set_features = smsc95xx_set_features,
1246};
1247
1248static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
1249{
1250 struct smsc95xx_priv *pdata = NULL;
1251 u32 val;
1252 int ret;
1253
1254 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
1255
1256 ret = usbnet_get_endpoints(dev, intf);
1257 if (ret < 0) {
1258 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
1259 return ret;
1260 }
1261
1262 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc95xx_priv),
1263 GFP_KERNEL);
1264
1265 pdata = (struct smsc95xx_priv *)(dev->data[0]);
1266 if (!pdata)
1267 return -ENOMEM;
1268
1269 spin_lock_init(&pdata->mac_cr_lock);
1270
1271
1272
1273
1274
1275
1276
1277
1278 if (DEFAULT_TX_CSUM_ENABLE)
1279 dev->net->features |= NETIF_F_IP_CSUM;
1280 if (DEFAULT_RX_CSUM_ENABLE)
1281 dev->net->features |= NETIF_F_RXCSUM;
1282
1283 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
1284 set_bit(EVENT_NO_IP_ALIGN, &dev->flags);
1285
1286 smsc95xx_init_mac_address(dev);
1287
1288
1289 ret = smsc95xx_reset(dev);
1290 if (ret)
1291 goto free_pdata;
1292
1293
1294 ret = smsc95xx_read_reg(dev, ID_REV, &val);
1295 if (ret < 0)
1296 goto free_pdata;
1297
1298 val >>= 16;
1299 pdata->chip_id = val;
1300 pdata->mdix_ctrl = get_mdix_status(dev->net);
1301
1302 if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9530_) ||
1303 (val == ID_REV_CHIP_ID_89530_) || (val == ID_REV_CHIP_ID_9730_))
1304 pdata->features = (FEATURE_8_WAKEUP_FILTERS |
1305 FEATURE_PHY_NLP_CROSSOVER |
1306 FEATURE_REMOTE_WAKEUP);
1307 else if (val == ID_REV_CHIP_ID_9512_)
1308 pdata->features = FEATURE_8_WAKEUP_FILTERS;
1309
1310 dev->net->netdev_ops = &smsc95xx_netdev_ops;
1311 dev->net->ethtool_ops = &smsc95xx_ethtool_ops;
1312 dev->net->flags |= IFF_MULTICAST;
1313 dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM;
1314 dev->net->min_mtu = ETH_MIN_MTU;
1315 dev->net->max_mtu = ETH_DATA_LEN;
1316 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
1317
1318 pdata->dev = dev;
1319 INIT_DELAYED_WORK(&pdata->carrier_check, check_carrier);
1320 schedule_delayed_work(&pdata->carrier_check, CARRIER_CHECK_DELAY);
1321
1322 return 0;
1323
1324free_pdata:
1325 kfree(pdata);
1326 return ret;
1327}
1328
1329static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf)
1330{
1331 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1332
1333 if (pdata) {
1334 cancel_delayed_work_sync(&pdata->carrier_check);
1335 netif_dbg(dev, ifdown, dev->net, "free pdata\n");
1336 kfree(pdata);
1337 pdata = NULL;
1338 dev->data[0] = 0;
1339 }
1340}
1341
1342static u32 smsc_crc(const u8 *buffer, size_t len, int filter)
1343{
1344 u32 crc = bitrev16(crc16(0xFFFF, buffer, len));
1345 return crc << ((filter % 2) * 16);
1346}
1347
1348static int smsc95xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask)
1349{
1350 struct mii_if_info *mii = &dev->mii;
1351 int ret;
1352
1353 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n");
1354
1355
1356 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC);
1357 if (ret < 0)
1358 return ret;
1359
1360
1361 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK);
1362 if (ret < 0)
1363 return ret;
1364
1365 ret |= mask;
1366
1367 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret);
1368
1369 return 0;
1370}
1371
1372static int smsc95xx_link_ok_nopm(struct usbnet *dev)
1373{
1374 struct mii_if_info *mii = &dev->mii;
1375 int ret;
1376
1377
1378 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1379 if (ret < 0)
1380 return ret;
1381
1382 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1383 if (ret < 0)
1384 return ret;
1385
1386 return !!(ret & BMSR_LSTATUS);
1387}
1388
1389static int smsc95xx_enter_suspend0(struct usbnet *dev)
1390{
1391 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1392 u32 val;
1393 int ret;
1394
1395 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1396 if (ret < 0)
1397 return ret;
1398
1399 val &= (~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_));
1400 val |= PM_CTL_SUS_MODE_0;
1401
1402 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1403 if (ret < 0)
1404 return ret;
1405
1406
1407 val &= ~PM_CTL_WUPS_;
1408 val |= PM_CTL_WUPS_WOL_;
1409
1410
1411 if (pdata->wolopts & WAKE_PHY)
1412 val |= PM_CTL_WUPS_ED_;
1413
1414 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1415 if (ret < 0)
1416 return ret;
1417
1418
1419 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1420 if (ret < 0)
1421 return ret;
1422
1423 pdata->suspend_flags |= SUSPEND_SUSPEND0;
1424
1425 return 0;
1426}
1427
1428static int smsc95xx_enter_suspend1(struct usbnet *dev)
1429{
1430 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1431 struct mii_if_info *mii = &dev->mii;
1432 u32 val;
1433 int ret;
1434
1435
1436
1437
1438 if (pdata->features & FEATURE_PHY_NLP_CROSSOVER)
1439 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_EDPD_CONFIG,
1440 PHY_EDPD_CONFIG_DEFAULT);
1441
1442
1443 ret = smsc95xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS);
1444 if (ret < 0)
1445 return ret;
1446
1447 ret |= MODE_CTRL_STS_EDPWRDOWN_;
1448
1449 smsc95xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_MODE_CTRL_STS, ret);
1450
1451
1452 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1453 if (ret < 0)
1454 return ret;
1455
1456 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1457 val |= PM_CTL_SUS_MODE_1;
1458
1459 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1460 if (ret < 0)
1461 return ret;
1462
1463
1464 val &= ~PM_CTL_WUPS_;
1465 val |= (PM_CTL_WUPS_ED_ | PM_CTL_ED_EN_);
1466
1467 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1468 if (ret < 0)
1469 return ret;
1470
1471 pdata->suspend_flags |= SUSPEND_SUSPEND1;
1472
1473 return 0;
1474}
1475
1476static int smsc95xx_enter_suspend2(struct usbnet *dev)
1477{
1478 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1479 u32 val;
1480 int ret;
1481
1482 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1483 if (ret < 0)
1484 return ret;
1485
1486 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1487 val |= PM_CTL_SUS_MODE_2;
1488
1489 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1490 if (ret < 0)
1491 return ret;
1492
1493 pdata->suspend_flags |= SUSPEND_SUSPEND2;
1494
1495 return 0;
1496}
1497
1498static int smsc95xx_enter_suspend3(struct usbnet *dev)
1499{
1500 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1501 u32 val;
1502 int ret;
1503
1504 ret = smsc95xx_read_reg_nopm(dev, RX_FIFO_INF, &val);
1505 if (ret < 0)
1506 return ret;
1507
1508 if (val & RX_FIFO_INF_USED_) {
1509 netdev_info(dev->net, "rx fifo not empty in autosuspend\n");
1510 return -EBUSY;
1511 }
1512
1513 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1514 if (ret < 0)
1515 return ret;
1516
1517 val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
1518 val |= PM_CTL_SUS_MODE_3 | PM_CTL_RES_CLR_WKP_STS;
1519
1520 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1521 if (ret < 0)
1522 return ret;
1523
1524
1525 val &= ~PM_CTL_WUPS_;
1526 val |= PM_CTL_WUPS_WOL_;
1527
1528 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1529 if (ret < 0)
1530 return ret;
1531
1532 pdata->suspend_flags |= SUSPEND_SUSPEND3;
1533
1534 return 0;
1535}
1536
1537static int smsc95xx_autosuspend(struct usbnet *dev, u32 link_up)
1538{
1539 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1540 int ret;
1541
1542 if (!netif_running(dev->net)) {
1543
1544 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n");
1545 return smsc95xx_enter_suspend2(dev);
1546 }
1547
1548 if (!link_up) {
1549
1550
1551
1552
1553 if (!(pdata->features & FEATURE_PHY_NLP_CROSSOVER)) {
1554 netdev_warn(dev->net, "EDPD not supported\n");
1555 return -EBUSY;
1556 }
1557
1558 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n");
1559
1560
1561 ret = smsc95xx_enable_phy_wakeup_interrupts(dev,
1562 PHY_INT_MASK_ANEG_COMP_);
1563 if (ret < 0) {
1564 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1565 return ret;
1566 }
1567
1568 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1569 return smsc95xx_enter_suspend1(dev);
1570 }
1571
1572
1573 ret = smsc95xx_enable_phy_wakeup_interrupts(dev,
1574 PHY_INT_MASK_LINK_DOWN_);
1575 if (ret < 0) {
1576 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1577 return ret;
1578 }
1579
1580 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n");
1581 return smsc95xx_enter_suspend3(dev);
1582}
1583
1584static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
1585{
1586 struct usbnet *dev = usb_get_intfdata(intf);
1587 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
1588 u32 val, link_up;
1589 int ret;
1590
1591 ret = usbnet_suspend(intf, message);
1592 if (ret < 0) {
1593 netdev_warn(dev->net, "usbnet_suspend error\n");
1594 return ret;
1595 }
1596
1597 cancel_delayed_work_sync(&pdata->carrier_check);
1598
1599 if (pdata->suspend_flags) {
1600 netdev_warn(dev->net, "error during last resume\n");
1601 pdata->suspend_flags = 0;
1602 }
1603
1604
1605 link_up = smsc95xx_link_ok_nopm(dev);
1606
1607 if (message.event == PM_EVENT_AUTO_SUSPEND &&
1608 (pdata->features & FEATURE_REMOTE_WAKEUP)) {
1609 ret = smsc95xx_autosuspend(dev, link_up);
1610 goto done;
1611 }
1612
1613
1614
1615
1616
1617 if (!(pdata->wolopts & SUPPORTED_WAKE) ||
1618 !(link_up || (pdata->wolopts & WAKE_PHY))) {
1619 netdev_info(dev->net, "entering SUSPEND2 mode\n");
1620
1621
1622 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1623 if (ret < 0)
1624 goto done;
1625
1626 val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_);
1627
1628 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1629 if (ret < 0)
1630 goto done;
1631
1632 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1633 if (ret < 0)
1634 goto done;
1635
1636 val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_);
1637
1638 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1639 if (ret < 0)
1640 goto done;
1641
1642 ret = smsc95xx_enter_suspend2(dev);
1643 goto done;
1644 }
1645
1646 if (pdata->wolopts & WAKE_PHY) {
1647 ret = smsc95xx_enable_phy_wakeup_interrupts(dev,
1648 (PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_LINK_DOWN_));
1649 if (ret < 0) {
1650 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1651 goto done;
1652 }
1653
1654
1655
1656
1657 if (!link_up) {
1658 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1659 ret = smsc95xx_enter_suspend1(dev);
1660 goto done;
1661 }
1662 }
1663
1664 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
1665 u32 *filter_mask = kcalloc(32, sizeof(u32), GFP_KERNEL);
1666 u32 command[2];
1667 u32 offset[2];
1668 u32 crc[4];
1669 int wuff_filter_count =
1670 (pdata->features & FEATURE_8_WAKEUP_FILTERS) ?
1671 LAN9500A_WUFF_NUM : LAN9500_WUFF_NUM;
1672 int i, filter = 0;
1673
1674 if (!filter_mask) {
1675 netdev_warn(dev->net, "Unable to allocate filter_mask\n");
1676 ret = -ENOMEM;
1677 goto done;
1678 }
1679
1680 memset(command, 0, sizeof(command));
1681 memset(offset, 0, sizeof(offset));
1682 memset(crc, 0, sizeof(crc));
1683
1684 if (pdata->wolopts & WAKE_BCAST) {
1685 const u8 bcast[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1686 netdev_info(dev->net, "enabling broadcast detection\n");
1687 filter_mask[filter * 4] = 0x003F;
1688 filter_mask[filter * 4 + 1] = 0x00;
1689 filter_mask[filter * 4 + 2] = 0x00;
1690 filter_mask[filter * 4 + 3] = 0x00;
1691 command[filter/4] |= 0x05UL << ((filter % 4) * 8);
1692 offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1693 crc[filter/2] |= smsc_crc(bcast, 6, filter);
1694 filter++;
1695 }
1696
1697 if (pdata->wolopts & WAKE_MCAST) {
1698 const u8 mcast[] = {0x01, 0x00, 0x5E};
1699 netdev_info(dev->net, "enabling multicast detection\n");
1700 filter_mask[filter * 4] = 0x0007;
1701 filter_mask[filter * 4 + 1] = 0x00;
1702 filter_mask[filter * 4 + 2] = 0x00;
1703 filter_mask[filter * 4 + 3] = 0x00;
1704 command[filter/4] |= 0x09UL << ((filter % 4) * 8);
1705 offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1706 crc[filter/2] |= smsc_crc(mcast, 3, filter);
1707 filter++;
1708 }
1709
1710 if (pdata->wolopts & WAKE_ARP) {
1711 const u8 arp[] = {0x08, 0x06};
1712 netdev_info(dev->net, "enabling ARP detection\n");
1713 filter_mask[filter * 4] = 0x0003;
1714 filter_mask[filter * 4 + 1] = 0x00;
1715 filter_mask[filter * 4 + 2] = 0x00;
1716 filter_mask[filter * 4 + 3] = 0x00;
1717 command[filter/4] |= 0x05UL << ((filter % 4) * 8);
1718 offset[filter/4] |= 0x0C << ((filter % 4) * 8);
1719 crc[filter/2] |= smsc_crc(arp, 2, filter);
1720 filter++;
1721 }
1722
1723 if (pdata->wolopts & WAKE_UCAST) {
1724 netdev_info(dev->net, "enabling unicast detection\n");
1725 filter_mask[filter * 4] = 0x003F;
1726 filter_mask[filter * 4 + 1] = 0x00;
1727 filter_mask[filter * 4 + 2] = 0x00;
1728 filter_mask[filter * 4 + 3] = 0x00;
1729 command[filter/4] |= 0x01UL << ((filter % 4) * 8);
1730 offset[filter/4] |= 0x00 << ((filter % 4) * 8);
1731 crc[filter/2] |= smsc_crc(dev->net->dev_addr, ETH_ALEN, filter);
1732 filter++;
1733 }
1734
1735 for (i = 0; i < (wuff_filter_count * 4); i++) {
1736 ret = smsc95xx_write_reg_nopm(dev, WUFF, filter_mask[i]);
1737 if (ret < 0) {
1738 kfree(filter_mask);
1739 goto done;
1740 }
1741 }
1742 kfree(filter_mask);
1743
1744 for (i = 0; i < (wuff_filter_count / 4); i++) {
1745 ret = smsc95xx_write_reg_nopm(dev, WUFF, command[i]);
1746 if (ret < 0)
1747 goto done;
1748 }
1749
1750 for (i = 0; i < (wuff_filter_count / 4); i++) {
1751 ret = smsc95xx_write_reg_nopm(dev, WUFF, offset[i]);
1752 if (ret < 0)
1753 goto done;
1754 }
1755
1756 for (i = 0; i < (wuff_filter_count / 2); i++) {
1757 ret = smsc95xx_write_reg_nopm(dev, WUFF, crc[i]);
1758 if (ret < 0)
1759 goto done;
1760 }
1761
1762
1763 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1764 if (ret < 0)
1765 goto done;
1766
1767 val |= WUCSR_WUFR_;
1768
1769 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1770 if (ret < 0)
1771 goto done;
1772 }
1773
1774 if (pdata->wolopts & WAKE_MAGIC) {
1775
1776 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1777 if (ret < 0)
1778 goto done;
1779
1780 val |= WUCSR_MPR_;
1781
1782 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1783 if (ret < 0)
1784 goto done;
1785 }
1786
1787
1788 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1789 if (ret < 0)
1790 goto done;
1791
1792 if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
1793 netdev_info(dev->net, "enabling pattern match wakeup\n");
1794 val |= WUCSR_WAKE_EN_;
1795 } else {
1796 netdev_info(dev->net, "disabling pattern match wakeup\n");
1797 val &= ~WUCSR_WAKE_EN_;
1798 }
1799
1800 if (pdata->wolopts & WAKE_MAGIC) {
1801 netdev_info(dev->net, "enabling magic packet wakeup\n");
1802 val |= WUCSR_MPEN_;
1803 } else {
1804 netdev_info(dev->net, "disabling magic packet wakeup\n");
1805 val &= ~WUCSR_MPEN_;
1806 }
1807
1808 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1809 if (ret < 0)
1810 goto done;
1811
1812
1813 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1814 if (ret < 0)
1815 goto done;
1816
1817 val |= PM_CTL_WOL_EN_;
1818
1819
1820 if (pdata->wolopts & WAKE_PHY)
1821 val |= PM_CTL_ED_EN_;
1822
1823 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1824 if (ret < 0)
1825 goto done;
1826
1827
1828 smsc95xx_start_rx_path(dev, 1);
1829
1830
1831 netdev_info(dev->net, "entering SUSPEND0 mode\n");
1832 ret = smsc95xx_enter_suspend0(dev);
1833
1834done:
1835
1836
1837
1838
1839 if (ret && PMSG_IS_AUTO(message))
1840 usbnet_resume(intf);
1841
1842 if (ret)
1843 schedule_delayed_work(&pdata->carrier_check,
1844 CARRIER_CHECK_DELAY);
1845
1846 return ret;
1847}
1848
1849static int smsc95xx_resume(struct usb_interface *intf)
1850{
1851 struct usbnet *dev = usb_get_intfdata(intf);
1852 struct smsc95xx_priv *pdata;
1853 u8 suspend_flags;
1854 int ret;
1855 u32 val;
1856
1857 BUG_ON(!dev);
1858 pdata = (struct smsc95xx_priv *)(dev->data[0]);
1859 suspend_flags = pdata->suspend_flags;
1860
1861 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags);
1862
1863
1864 pdata->suspend_flags = 0;
1865 schedule_delayed_work(&pdata->carrier_check, CARRIER_CHECK_DELAY);
1866
1867 if (suspend_flags & SUSPEND_ALLMODES) {
1868
1869 ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
1870 if (ret < 0)
1871 return ret;
1872
1873 val &= ~(WUCSR_WAKE_EN_ | WUCSR_MPEN_);
1874
1875 ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
1876 if (ret < 0)
1877 return ret;
1878
1879
1880 ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
1881 if (ret < 0)
1882 return ret;
1883
1884 val &= ~PM_CTL_WOL_EN_;
1885 val |= PM_CTL_WUPS_;
1886
1887 ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
1888 if (ret < 0)
1889 return ret;
1890 }
1891
1892 ret = usbnet_resume(intf);
1893 if (ret < 0)
1894 netdev_warn(dev->net, "usbnet_resume error\n");
1895
1896 return ret;
1897}
1898
1899static int smsc95xx_reset_resume(struct usb_interface *intf)
1900{
1901 struct usbnet *dev = usb_get_intfdata(intf);
1902 int ret;
1903
1904 ret = smsc95xx_reset(dev);
1905 if (ret < 0)
1906 return ret;
1907
1908 return smsc95xx_resume(intf);
1909}
1910
1911static void smsc95xx_rx_csum_offload(struct sk_buff *skb)
1912{
1913 skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2);
1914 skb->ip_summed = CHECKSUM_COMPLETE;
1915 skb_trim(skb, skb->len - 2);
1916}
1917
1918static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
1919{
1920
1921 if (skb->len < dev->net->hard_header_len)
1922 return 0;
1923
1924 while (skb->len > 0) {
1925 u32 header, align_count;
1926 struct sk_buff *ax_skb;
1927 unsigned char *packet;
1928 u16 size;
1929
1930 header = get_unaligned_le32(skb->data);
1931 skb_pull(skb, 4 + NET_IP_ALIGN);
1932 packet = skb->data;
1933
1934
1935 size = (u16)((header & RX_STS_FL_) >> 16);
1936 align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4;
1937
1938 if (unlikely(header & RX_STS_ES_)) {
1939 netif_dbg(dev, rx_err, dev->net,
1940 "Error header=0x%08x\n", header);
1941 dev->net->stats.rx_errors++;
1942 dev->net->stats.rx_dropped++;
1943
1944 if (header & RX_STS_CRC_) {
1945 dev->net->stats.rx_crc_errors++;
1946 } else {
1947 if (header & (RX_STS_TL_ | RX_STS_RF_))
1948 dev->net->stats.rx_frame_errors++;
1949
1950 if ((header & RX_STS_LE_) &&
1951 (!(header & RX_STS_FT_)))
1952 dev->net->stats.rx_length_errors++;
1953 }
1954 } else {
1955
1956 if (unlikely(size > (ETH_FRAME_LEN + 12))) {
1957 netif_dbg(dev, rx_err, dev->net,
1958 "size err header=0x%08x\n", header);
1959 return 0;
1960 }
1961
1962
1963 if (skb->len == size) {
1964 if (dev->net->features & NETIF_F_RXCSUM)
1965 smsc95xx_rx_csum_offload(skb);
1966 skb_trim(skb, skb->len - 4);
1967 skb->truesize = size + sizeof(struct sk_buff);
1968
1969 return 1;
1970 }
1971
1972 ax_skb = skb_clone(skb, GFP_ATOMIC);
1973 if (unlikely(!ax_skb)) {
1974 netdev_warn(dev->net, "Error allocating skb\n");
1975 return 0;
1976 }
1977
1978 ax_skb->len = size;
1979 ax_skb->data = packet;
1980 skb_set_tail_pointer(ax_skb, size);
1981
1982 if (dev->net->features & NETIF_F_RXCSUM)
1983 smsc95xx_rx_csum_offload(ax_skb);
1984 skb_trim(ax_skb, ax_skb->len - 4);
1985 ax_skb->truesize = size + sizeof(struct sk_buff);
1986
1987 usbnet_skb_return(dev, ax_skb);
1988 }
1989
1990 skb_pull(skb, size);
1991
1992
1993 if (skb->len)
1994 skb_pull(skb, align_count);
1995 }
1996
1997 return 1;
1998}
1999
2000static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb)
2001{
2002 u16 low_16 = (u16)skb_checksum_start_offset(skb);
2003 u16 high_16 = low_16 + skb->csum_offset;
2004 return (high_16 << 16) | low_16;
2005}
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015static bool smsc95xx_can_tx_checksum(struct sk_buff *skb)
2016{
2017 unsigned int len = skb->len - skb_checksum_start_offset(skb);
2018
2019 if (skb->len <= 45)
2020 return false;
2021 return skb->csum_offset < (len - (4 + 1));
2022}
2023
2024static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev,
2025 struct sk_buff *skb, gfp_t flags)
2026{
2027 bool csum = skb->ip_summed == CHECKSUM_PARTIAL;
2028 int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD;
2029 u32 tx_cmd_a, tx_cmd_b;
2030 void *ptr;
2031
2032
2033 BUG_ON(skb_shinfo(skb)->nr_frags);
2034
2035
2036 if (skb_cow_head(skb, overhead)) {
2037
2038
2039
2040 dev_kfree_skb_any(skb);
2041 return NULL;
2042 }
2043
2044 tx_cmd_b = (u32)skb->len;
2045 tx_cmd_a = tx_cmd_b | TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_;
2046
2047 if (csum) {
2048 if (!smsc95xx_can_tx_checksum(skb)) {
2049
2050
2051 long csstart = skb_checksum_start_offset(skb);
2052 __wsum calc = csum_partial(skb->data + csstart,
2053 skb->len - csstart, 0);
2054 *((__sum16 *)(skb->data + csstart
2055 + skb->csum_offset)) = csum_fold(calc);
2056
2057 csum = false;
2058 } else {
2059 u32 csum_preamble = smsc95xx_calc_csum_preamble(skb);
2060 ptr = skb_push(skb, 4);
2061 put_unaligned_le32(csum_preamble, ptr);
2062
2063 tx_cmd_a += 4;
2064 tx_cmd_b += 4;
2065 tx_cmd_b |= TX_CMD_B_CSUM_ENABLE;
2066 }
2067 }
2068
2069 ptr = skb_push(skb, 8);
2070 put_unaligned_le32(tx_cmd_a, ptr);
2071 put_unaligned_le32(tx_cmd_b, ptr+4);
2072
2073 return skb;
2074}
2075
2076static int smsc95xx_manage_power(struct usbnet *dev, int on)
2077{
2078 struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
2079
2080 dev->intf->needs_remote_wakeup = on;
2081
2082 if (pdata->features & FEATURE_REMOTE_WAKEUP)
2083 return 0;
2084
2085
2086 netdev_info(dev->net, "hardware isn't capable of remote wakeup\n");
2087
2088 if (on)
2089 usb_autopm_get_interface_no_resume(dev->intf);
2090 else
2091 usb_autopm_put_interface(dev->intf);
2092
2093 return 0;
2094}
2095
2096static const struct driver_info smsc95xx_info = {
2097 .description = "smsc95xx USB 2.0 Ethernet",
2098 .bind = smsc95xx_bind,
2099 .unbind = smsc95xx_unbind,
2100 .link_reset = smsc95xx_link_reset,
2101 .reset = smsc95xx_reset,
2102 .rx_fixup = smsc95xx_rx_fixup,
2103 .tx_fixup = smsc95xx_tx_fixup,
2104 .status = smsc95xx_status,
2105 .manage_power = smsc95xx_manage_power,
2106 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
2107};
2108
2109static const struct usb_device_id products[] = {
2110 {
2111
2112 USB_DEVICE(0x0424, 0x9500),
2113 .driver_info = (unsigned long) &smsc95xx_info,
2114 },
2115 {
2116
2117 USB_DEVICE(0x0424, 0x9505),
2118 .driver_info = (unsigned long) &smsc95xx_info,
2119 },
2120 {
2121
2122 USB_DEVICE(0x0424, 0x9E00),
2123 .driver_info = (unsigned long) &smsc95xx_info,
2124 },
2125 {
2126
2127 USB_DEVICE(0x0424, 0x9E01),
2128 .driver_info = (unsigned long) &smsc95xx_info,
2129 },
2130 {
2131
2132 USB_DEVICE(0x0424, 0xec00),
2133 .driver_info = (unsigned long) &smsc95xx_info,
2134 },
2135 {
2136
2137 USB_DEVICE(0x0424, 0x9900),
2138 .driver_info = (unsigned long) &smsc95xx_info,
2139 },
2140 {
2141
2142 USB_DEVICE(0x0424, 0x9901),
2143 .driver_info = (unsigned long) &smsc95xx_info,
2144 },
2145 {
2146
2147 USB_DEVICE(0x0424, 0x9902),
2148 .driver_info = (unsigned long) &smsc95xx_info,
2149 },
2150 {
2151
2152 USB_DEVICE(0x0424, 0x9903),
2153 .driver_info = (unsigned long) &smsc95xx_info,
2154 },
2155 {
2156
2157 USB_DEVICE(0x0424, 0x9904),
2158 .driver_info = (unsigned long) &smsc95xx_info,
2159 },
2160 {
2161
2162 USB_DEVICE(0x0424, 0x9905),
2163 .driver_info = (unsigned long) &smsc95xx_info,
2164 },
2165 {
2166
2167 USB_DEVICE(0x0424, 0x9906),
2168 .driver_info = (unsigned long) &smsc95xx_info,
2169 },
2170 {
2171
2172 USB_DEVICE(0x0424, 0x9907),
2173 .driver_info = (unsigned long) &smsc95xx_info,
2174 },
2175 {
2176
2177 USB_DEVICE(0x0424, 0x9908),
2178 .driver_info = (unsigned long) &smsc95xx_info,
2179 },
2180 {
2181
2182 USB_DEVICE(0x0424, 0x9909),
2183 .driver_info = (unsigned long) &smsc95xx_info,
2184 },
2185 {
2186
2187 USB_DEVICE(0x0424, 0x9530),
2188 .driver_info = (unsigned long) &smsc95xx_info,
2189 },
2190 {
2191
2192 USB_DEVICE(0x0424, 0x9730),
2193 .driver_info = (unsigned long) &smsc95xx_info,
2194 },
2195 {
2196
2197 USB_DEVICE(0x0424, 0x9E08),
2198 .driver_info = (unsigned long) &smsc95xx_info,
2199 },
2200 { },
2201};
2202MODULE_DEVICE_TABLE(usb, products);
2203
2204static struct usb_driver smsc95xx_driver = {
2205 .name = "smsc95xx",
2206 .id_table = products,
2207 .probe = usbnet_probe,
2208 .suspend = smsc95xx_suspend,
2209 .resume = smsc95xx_resume,
2210 .reset_resume = smsc95xx_reset_resume,
2211 .disconnect = usbnet_disconnect,
2212 .disable_hub_initiated_lpm = 1,
2213 .supports_autosuspend = 1,
2214};
2215
2216module_usb_driver(smsc95xx_driver);
2217
2218MODULE_AUTHOR("Nancy Lin");
2219MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2220MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices");
2221MODULE_LICENSE("GPL");
2222
