Loading...
1/*
2 * ASIX AX8817X based USB 2.0 Ethernet Devices
3 * Copyright (C) 2003-2006 David Hollis <dhollis@davehollis.com>
4 * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
5 * Copyright (C) 2006 James Painter <jamie.painter@iname.com>
6 * Copyright (c) 2002-2003 TiVo Inc.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 */
21
22#include "asix.h"
23
24int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
25 u16 size, void *data, int in_pm)
26{
27 int ret;
28 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
29
30 BUG_ON(!dev);
31
32 if (!in_pm)
33 fn = usbnet_read_cmd;
34 else
35 fn = usbnet_read_cmd_nopm;
36
37 ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
38 value, index, data, size);
39
40 if (unlikely(ret < 0))
41 netdev_warn(dev->net, "Failed to read reg index 0x%04x: %d\n",
42 index, ret);
43
44 return ret;
45}
46
47int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
48 u16 size, void *data, int in_pm)
49{
50 int ret;
51 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
52
53 BUG_ON(!dev);
54
55 if (!in_pm)
56 fn = usbnet_write_cmd;
57 else
58 fn = usbnet_write_cmd_nopm;
59
60 ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
61 value, index, data, size);
62
63 if (unlikely(ret < 0))
64 netdev_warn(dev->net, "Failed to write reg index 0x%04x: %d\n",
65 index, ret);
66
67 return ret;
68}
69
70void asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
71 u16 size, void *data)
72{
73 usbnet_write_cmd_async(dev, cmd,
74 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
75 value, index, data, size);
76}
77
78static void reset_asix_rx_fixup_info(struct asix_rx_fixup_info *rx)
79{
80 /* Reset the variables that have a lifetime outside of
81 * asix_rx_fixup_internal() so that future processing starts from a
82 * known set of initial conditions.
83 */
84
85 if (rx->ax_skb) {
86 /* Discard any incomplete Ethernet frame in the netdev buffer */
87 kfree_skb(rx->ax_skb);
88 rx->ax_skb = NULL;
89 }
90
91 /* Assume the Data header 32-bit word is at the start of the current
92 * or next URB socket buffer so reset all the state variables.
93 */
94 rx->remaining = 0;
95 rx->split_head = false;
96 rx->header = 0;
97}
98
99int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb,
100 struct asix_rx_fixup_info *rx)
101{
102 int offset = 0;
103 u16 size;
104
105 /* When an Ethernet frame spans multiple URB socket buffers,
106 * do a sanity test for the Data header synchronisation.
107 * Attempt to detect the situation of the previous socket buffer having
108 * been truncated or a socket buffer was missing. These situations
109 * cause a discontinuity in the data stream and therefore need to avoid
110 * appending bad data to the end of the current netdev socket buffer.
111 * Also avoid unnecessarily discarding a good current netdev socket
112 * buffer.
113 */
114 if (rx->remaining && (rx->remaining + sizeof(u32) <= skb->len)) {
115 offset = ((rx->remaining + 1) & 0xfffe);
116 rx->header = get_unaligned_le32(skb->data + offset);
117 offset = 0;
118
119 size = (u16)(rx->header & 0x7ff);
120 if (size != ((~rx->header >> 16) & 0x7ff)) {
121 netdev_err(dev->net, "asix_rx_fixup() Data Header synchronisation was lost, remaining %d\n",
122 rx->remaining);
123 reset_asix_rx_fixup_info(rx);
124 }
125 }
126
127 while (offset + sizeof(u16) <= skb->len) {
128 u16 copy_length;
129
130 if (!rx->remaining) {
131 if (skb->len - offset == sizeof(u16)) {
132 rx->header = get_unaligned_le16(
133 skb->data + offset);
134 rx->split_head = true;
135 offset += sizeof(u16);
136 break;
137 }
138
139 if (rx->split_head == true) {
140 rx->header |= (get_unaligned_le16(
141 skb->data + offset) << 16);
142 rx->split_head = false;
143 offset += sizeof(u16);
144 } else {
145 rx->header = get_unaligned_le32(skb->data +
146 offset);
147 offset += sizeof(u32);
148 }
149
150 /* take frame length from Data header 32-bit word */
151 size = (u16)(rx->header & 0x7ff);
152 if (size != ((~rx->header >> 16) & 0x7ff)) {
153 netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n",
154 rx->header, offset);
155 reset_asix_rx_fixup_info(rx);
156 return 0;
157 }
158 if (size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {
159 netdev_dbg(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
160 size);
161 reset_asix_rx_fixup_info(rx);
162 return 0;
163 }
164
165 /* Sometimes may fail to get a netdev socket buffer but
166 * continue to process the URB socket buffer so that
167 * synchronisation of the Ethernet frame Data header
168 * word is maintained.
169 */
170 rx->ax_skb = netdev_alloc_skb_ip_align(dev->net, size);
171
172 rx->remaining = size;
173 }
174
175 if (rx->remaining > skb->len - offset) {
176 copy_length = skb->len - offset;
177 rx->remaining -= copy_length;
178 } else {
179 copy_length = rx->remaining;
180 rx->remaining = 0;
181 }
182
183 if (rx->ax_skb) {
184 skb_put_data(rx->ax_skb, skb->data + offset,
185 copy_length);
186 if (!rx->remaining) {
187 usbnet_skb_return(dev, rx->ax_skb);
188 rx->ax_skb = NULL;
189 }
190 }
191
192 offset += (copy_length + 1) & 0xfffe;
193 }
194
195 if (skb->len != offset) {
196 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n",
197 skb->len, offset);
198 reset_asix_rx_fixup_info(rx);
199 return 0;
200 }
201
202 return 1;
203}
204
205int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb)
206{
207 struct asix_common_private *dp = dev->driver_priv;
208 struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
209
210 return asix_rx_fixup_internal(dev, skb, rx);
211}
212
213void asix_rx_fixup_common_free(struct asix_common_private *dp)
214{
215 struct asix_rx_fixup_info *rx;
216
217 if (!dp)
218 return;
219
220 rx = &dp->rx_fixup_info;
221
222 if (rx->ax_skb) {
223 kfree_skb(rx->ax_skb);
224 rx->ax_skb = NULL;
225 }
226}
227
228struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
229 gfp_t flags)
230{
231 int padlen;
232 int headroom = skb_headroom(skb);
233 int tailroom = skb_tailroom(skb);
234 u32 packet_len;
235 u32 padbytes = 0xffff0000;
236
237 padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
238
239 /* We need to push 4 bytes in front of frame (packet_len)
240 * and maybe add 4 bytes after the end (if padlen is 4)
241 *
242 * Avoid skb_copy_expand() expensive call, using following rules :
243 * - We are allowed to push 4 bytes in headroom if skb_header_cloned()
244 * is false (and if we have 4 bytes of headroom)
245 * - We are allowed to put 4 bytes at tail if skb_cloned()
246 * is false (and if we have 4 bytes of tailroom)
247 *
248 * TCP packets for example are cloned, but __skb_header_release()
249 * was called in tcp stack, allowing us to use headroom for our needs.
250 */
251 if (!skb_header_cloned(skb) &&
252 !(padlen && skb_cloned(skb)) &&
253 headroom + tailroom >= 4 + padlen) {
254 /* following should not happen, but better be safe */
255 if (headroom < 4 ||
256 tailroom < padlen) {
257 skb->data = memmove(skb->head + 4, skb->data, skb->len);
258 skb_set_tail_pointer(skb, skb->len);
259 }
260 } else {
261 struct sk_buff *skb2;
262
263 skb2 = skb_copy_expand(skb, 4, padlen, flags);
264 dev_kfree_skb_any(skb);
265 skb = skb2;
266 if (!skb)
267 return NULL;
268 }
269
270 packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
271 skb_push(skb, 4);
272 cpu_to_le32s(&packet_len);
273 skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
274
275 if (padlen) {
276 cpu_to_le32s(&padbytes);
277 memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
278 skb_put(skb, sizeof(padbytes));
279 }
280
281 usbnet_set_skb_tx_stats(skb, 1, 0);
282 return skb;
283}
284
285int asix_set_sw_mii(struct usbnet *dev, int in_pm)
286{
287 int ret;
288 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL, in_pm);
289
290 if (ret < 0)
291 netdev_err(dev->net, "Failed to enable software MII access\n");
292 return ret;
293}
294
295int asix_set_hw_mii(struct usbnet *dev, int in_pm)
296{
297 int ret;
298 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL, in_pm);
299 if (ret < 0)
300 netdev_err(dev->net, "Failed to enable hardware MII access\n");
301 return ret;
302}
303
304int asix_read_phy_addr(struct usbnet *dev, int internal)
305{
306 int offset = (internal ? 1 : 0);
307 u8 buf[2];
308 int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf, 0);
309
310 netdev_dbg(dev->net, "asix_get_phy_addr()\n");
311
312 if (ret < 0) {
313 netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
314 goto out;
315 }
316 netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
317 *((__le16 *)buf));
318 ret = buf[offset];
319
320out:
321 return ret;
322}
323
324int asix_get_phy_addr(struct usbnet *dev)
325{
326 /* return the address of the internal phy */
327 return asix_read_phy_addr(dev, 1);
328}
329
330
331int asix_sw_reset(struct usbnet *dev, u8 flags, int in_pm)
332{
333 int ret;
334
335 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL, in_pm);
336 if (ret < 0)
337 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
338
339 return ret;
340}
341
342u16 asix_read_rx_ctl(struct usbnet *dev, int in_pm)
343{
344 __le16 v;
345 int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v, in_pm);
346
347 if (ret < 0) {
348 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
349 goto out;
350 }
351 ret = le16_to_cpu(v);
352out:
353 return ret;
354}
355
356int asix_write_rx_ctl(struct usbnet *dev, u16 mode, int in_pm)
357{
358 int ret;
359
360 netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
361 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL, in_pm);
362 if (ret < 0)
363 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
364 mode, ret);
365
366 return ret;
367}
368
369u16 asix_read_medium_status(struct usbnet *dev, int in_pm)
370{
371 __le16 v;
372 int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS,
373 0, 0, 2, &v, in_pm);
374
375 if (ret < 0) {
376 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
377 ret);
378 return ret; /* TODO: callers not checking for error ret */
379 }
380
381 return le16_to_cpu(v);
382
383}
384
385int asix_write_medium_mode(struct usbnet *dev, u16 mode, int in_pm)
386{
387 int ret;
388
389 netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
390 ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE,
391 mode, 0, 0, NULL, in_pm);
392 if (ret < 0)
393 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
394 mode, ret);
395
396 return ret;
397}
398
399int asix_write_gpio(struct usbnet *dev, u16 value, int sleep, int in_pm)
400{
401 int ret;
402
403 netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
404 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL, in_pm);
405 if (ret < 0)
406 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
407 value, ret);
408
409 if (sleep)
410 msleep(sleep);
411
412 return ret;
413}
414
415/*
416 * AX88772 & AX88178 have a 16-bit RX_CTL value
417 */
418void asix_set_multicast(struct net_device *net)
419{
420 struct usbnet *dev = netdev_priv(net);
421 struct asix_data *data = (struct asix_data *)&dev->data;
422 u16 rx_ctl = AX_DEFAULT_RX_CTL;
423
424 if (net->flags & IFF_PROMISC) {
425 rx_ctl |= AX_RX_CTL_PRO;
426 } else if (net->flags & IFF_ALLMULTI ||
427 netdev_mc_count(net) > AX_MAX_MCAST) {
428 rx_ctl |= AX_RX_CTL_AMALL;
429 } else if (netdev_mc_empty(net)) {
430 /* just broadcast and directed */
431 } else {
432 /* We use the 20 byte dev->data
433 * for our 8 byte filter buffer
434 * to avoid allocating memory that
435 * is tricky to free later */
436 struct netdev_hw_addr *ha;
437 u32 crc_bits;
438
439 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
440
441 /* Build the multicast hash filter. */
442 netdev_for_each_mc_addr(ha, net) {
443 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
444 data->multi_filter[crc_bits >> 3] |=
445 1 << (crc_bits & 7);
446 }
447
448 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
449 AX_MCAST_FILTER_SIZE, data->multi_filter);
450
451 rx_ctl |= AX_RX_CTL_AM;
452 }
453
454 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
455}
456
457int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
458{
459 struct usbnet *dev = netdev_priv(netdev);
460 __le16 res;
461 u8 smsr;
462 int i = 0;
463 int ret;
464
465 mutex_lock(&dev->phy_mutex);
466 do {
467 ret = asix_set_sw_mii(dev, 0);
468 if (ret == -ENODEV || ret == -ETIMEDOUT)
469 break;
470 usleep_range(1000, 1100);
471 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
472 0, 0, 1, &smsr, 0);
473 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
474 if (ret == -ENODEV || ret == -ETIMEDOUT) {
475 mutex_unlock(&dev->phy_mutex);
476 return ret;
477 }
478
479 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
480 (__u16)loc, 2, &res, 0);
481 asix_set_hw_mii(dev, 0);
482 mutex_unlock(&dev->phy_mutex);
483
484 netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
485 phy_id, loc, le16_to_cpu(res));
486
487 return le16_to_cpu(res);
488}
489
490void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
491{
492 struct usbnet *dev = netdev_priv(netdev);
493 __le16 res = cpu_to_le16(val);
494 u8 smsr;
495 int i = 0;
496 int ret;
497
498 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
499 phy_id, loc, val);
500
501 mutex_lock(&dev->phy_mutex);
502 do {
503 ret = asix_set_sw_mii(dev, 0);
504 if (ret == -ENODEV)
505 break;
506 usleep_range(1000, 1100);
507 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
508 0, 0, 1, &smsr, 0);
509 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
510 if (ret == -ENODEV) {
511 mutex_unlock(&dev->phy_mutex);
512 return;
513 }
514
515 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
516 (__u16)loc, 2, &res, 0);
517 asix_set_hw_mii(dev, 0);
518 mutex_unlock(&dev->phy_mutex);
519}
520
521int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc)
522{
523 struct usbnet *dev = netdev_priv(netdev);
524 __le16 res;
525 u8 smsr;
526 int i = 0;
527 int ret;
528
529 mutex_lock(&dev->phy_mutex);
530 do {
531 ret = asix_set_sw_mii(dev, 1);
532 if (ret == -ENODEV || ret == -ETIMEDOUT)
533 break;
534 usleep_range(1000, 1100);
535 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
536 0, 0, 1, &smsr, 1);
537 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
538 if (ret == -ENODEV || ret == -ETIMEDOUT) {
539 mutex_unlock(&dev->phy_mutex);
540 return ret;
541 }
542
543 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
544 (__u16)loc, 2, &res, 1);
545 asix_set_hw_mii(dev, 1);
546 mutex_unlock(&dev->phy_mutex);
547
548 netdev_dbg(dev->net, "asix_mdio_read_nopm() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
549 phy_id, loc, le16_to_cpu(res));
550
551 return le16_to_cpu(res);
552}
553
554void
555asix_mdio_write_nopm(struct net_device *netdev, int phy_id, int loc, int val)
556{
557 struct usbnet *dev = netdev_priv(netdev);
558 __le16 res = cpu_to_le16(val);
559 u8 smsr;
560 int i = 0;
561 int ret;
562
563 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
564 phy_id, loc, val);
565
566 mutex_lock(&dev->phy_mutex);
567 do {
568 ret = asix_set_sw_mii(dev, 1);
569 if (ret == -ENODEV)
570 break;
571 usleep_range(1000, 1100);
572 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
573 0, 0, 1, &smsr, 1);
574 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
575 if (ret == -ENODEV) {
576 mutex_unlock(&dev->phy_mutex);
577 return;
578 }
579
580 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
581 (__u16)loc, 2, &res, 1);
582 asix_set_hw_mii(dev, 1);
583 mutex_unlock(&dev->phy_mutex);
584}
585
586void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
587{
588 struct usbnet *dev = netdev_priv(net);
589 u8 opt;
590
591 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE,
592 0, 0, 1, &opt, 0) < 0) {
593 wolinfo->supported = 0;
594 wolinfo->wolopts = 0;
595 return;
596 }
597 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
598 wolinfo->wolopts = 0;
599 if (opt & AX_MONITOR_LINK)
600 wolinfo->wolopts |= WAKE_PHY;
601 if (opt & AX_MONITOR_MAGIC)
602 wolinfo->wolopts |= WAKE_MAGIC;
603}
604
605int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
606{
607 struct usbnet *dev = netdev_priv(net);
608 u8 opt = 0;
609
610 if (wolinfo->wolopts & WAKE_PHY)
611 opt |= AX_MONITOR_LINK;
612 if (wolinfo->wolopts & WAKE_MAGIC)
613 opt |= AX_MONITOR_MAGIC;
614
615 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
616 opt, 0, 0, NULL, 0) < 0)
617 return -EINVAL;
618
619 return 0;
620}
621
622int asix_get_eeprom_len(struct net_device *net)
623{
624 return AX_EEPROM_LEN;
625}
626
627int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
628 u8 *data)
629{
630 struct usbnet *dev = netdev_priv(net);
631 u16 *eeprom_buff;
632 int first_word, last_word;
633 int i;
634
635 if (eeprom->len == 0)
636 return -EINVAL;
637
638 eeprom->magic = AX_EEPROM_MAGIC;
639
640 first_word = eeprom->offset >> 1;
641 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
642
643 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
644 GFP_KERNEL);
645 if (!eeprom_buff)
646 return -ENOMEM;
647
648 /* ax8817x returns 2 bytes from eeprom on read */
649 for (i = first_word; i <= last_word; i++) {
650 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
651 &eeprom_buff[i - first_word], 0) < 0) {
652 kfree(eeprom_buff);
653 return -EIO;
654 }
655 }
656
657 memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
658 kfree(eeprom_buff);
659 return 0;
660}
661
662int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
663 u8 *data)
664{
665 struct usbnet *dev = netdev_priv(net);
666 u16 *eeprom_buff;
667 int first_word, last_word;
668 int i;
669 int ret;
670
671 netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
672 eeprom->len, eeprom->offset, eeprom->magic);
673
674 if (eeprom->len == 0)
675 return -EINVAL;
676
677 if (eeprom->magic != AX_EEPROM_MAGIC)
678 return -EINVAL;
679
680 first_word = eeprom->offset >> 1;
681 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
682
683 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
684 GFP_KERNEL);
685 if (!eeprom_buff)
686 return -ENOMEM;
687
688 /* align data to 16 bit boundaries, read the missing data from
689 the EEPROM */
690 if (eeprom->offset & 1) {
691 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,
692 &eeprom_buff[0], 0);
693 if (ret < 0) {
694 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
695 goto free;
696 }
697 }
698
699 if ((eeprom->offset + eeprom->len) & 1) {
700 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,
701 &eeprom_buff[last_word - first_word], 0);
702 if (ret < 0) {
703 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
704 goto free;
705 }
706 }
707
708 memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
709
710 /* write data to EEPROM */
711 ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL, 0);
712 if (ret < 0) {
713 netdev_err(net, "Failed to enable EEPROM write\n");
714 goto free;
715 }
716 msleep(20);
717
718 for (i = first_word; i <= last_word; i++) {
719 netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
720 i, eeprom_buff[i - first_word]);
721 ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,
722 eeprom_buff[i - first_word], 0, NULL, 0);
723 if (ret < 0) {
724 netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",
725 i);
726 goto free;
727 }
728 msleep(20);
729 }
730
731 ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL, 0);
732 if (ret < 0) {
733 netdev_err(net, "Failed to disable EEPROM write\n");
734 goto free;
735 }
736
737 ret = 0;
738free:
739 kfree(eeprom_buff);
740 return ret;
741}
742
743void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
744{
745 /* Inherit standard device info */
746 usbnet_get_drvinfo(net, info);
747 strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
748 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
749}
750
751int asix_set_mac_address(struct net_device *net, void *p)
752{
753 struct usbnet *dev = netdev_priv(net);
754 struct asix_data *data = (struct asix_data *)&dev->data;
755 struct sockaddr *addr = p;
756
757 if (netif_running(net))
758 return -EBUSY;
759 if (!is_valid_ether_addr(addr->sa_data))
760 return -EADDRNOTAVAIL;
761
762 memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
763
764 /* We use the 20 byte dev->data
765 * for our 6 byte mac buffer
766 * to avoid allocating memory that
767 * is tricky to free later */
768 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
769 asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
770 data->mac_addr);
771
772 return 0;
773}
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * ASIX AX8817X based USB 2.0 Ethernet Devices
4 * Copyright (C) 2003-2006 David Hollis <dhollis@davehollis.com>
5 * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
6 * Copyright (C) 2006 James Painter <jamie.painter@iname.com>
7 * Copyright (c) 2002-2003 TiVo Inc.
8 */
9
10#include "asix.h"
11
12int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
13 u16 size, void *data, int in_pm)
14{
15 int ret;
16 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
17
18 BUG_ON(!dev);
19
20 if (!in_pm)
21 fn = usbnet_read_cmd;
22 else
23 fn = usbnet_read_cmd_nopm;
24
25 ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
26 value, index, data, size);
27
28 if (unlikely(ret < 0))
29 netdev_warn(dev->net, "Failed to read reg index 0x%04x: %d\n",
30 index, ret);
31
32 return ret;
33}
34
35int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
36 u16 size, void *data, int in_pm)
37{
38 int ret;
39 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
40
41 BUG_ON(!dev);
42
43 if (!in_pm)
44 fn = usbnet_write_cmd;
45 else
46 fn = usbnet_write_cmd_nopm;
47
48 ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
49 value, index, data, size);
50
51 if (unlikely(ret < 0))
52 netdev_warn(dev->net, "Failed to write reg index 0x%04x: %d\n",
53 index, ret);
54
55 return ret;
56}
57
58void asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
59 u16 size, void *data)
60{
61 usbnet_write_cmd_async(dev, cmd,
62 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
63 value, index, data, size);
64}
65
66static void reset_asix_rx_fixup_info(struct asix_rx_fixup_info *rx)
67{
68 /* Reset the variables that have a lifetime outside of
69 * asix_rx_fixup_internal() so that future processing starts from a
70 * known set of initial conditions.
71 */
72
73 if (rx->ax_skb) {
74 /* Discard any incomplete Ethernet frame in the netdev buffer */
75 kfree_skb(rx->ax_skb);
76 rx->ax_skb = NULL;
77 }
78
79 /* Assume the Data header 32-bit word is at the start of the current
80 * or next URB socket buffer so reset all the state variables.
81 */
82 rx->remaining = 0;
83 rx->split_head = false;
84 rx->header = 0;
85}
86
87int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb,
88 struct asix_rx_fixup_info *rx)
89{
90 int offset = 0;
91 u16 size;
92
93 /* When an Ethernet frame spans multiple URB socket buffers,
94 * do a sanity test for the Data header synchronisation.
95 * Attempt to detect the situation of the previous socket buffer having
96 * been truncated or a socket buffer was missing. These situations
97 * cause a discontinuity in the data stream and therefore need to avoid
98 * appending bad data to the end of the current netdev socket buffer.
99 * Also avoid unnecessarily discarding a good current netdev socket
100 * buffer.
101 */
102 if (rx->remaining && (rx->remaining + sizeof(u32) <= skb->len)) {
103 offset = ((rx->remaining + 1) & 0xfffe);
104 rx->header = get_unaligned_le32(skb->data + offset);
105 offset = 0;
106
107 size = (u16)(rx->header & 0x7ff);
108 if (size != ((~rx->header >> 16) & 0x7ff)) {
109 netdev_err(dev->net, "asix_rx_fixup() Data Header synchronisation was lost, remaining %d\n",
110 rx->remaining);
111 reset_asix_rx_fixup_info(rx);
112 }
113 }
114
115 while (offset + sizeof(u16) <= skb->len) {
116 u16 copy_length;
117
118 if (!rx->remaining) {
119 if (skb->len - offset == sizeof(u16)) {
120 rx->header = get_unaligned_le16(
121 skb->data + offset);
122 rx->split_head = true;
123 offset += sizeof(u16);
124 break;
125 }
126
127 if (rx->split_head == true) {
128 rx->header |= (get_unaligned_le16(
129 skb->data + offset) << 16);
130 rx->split_head = false;
131 offset += sizeof(u16);
132 } else {
133 rx->header = get_unaligned_le32(skb->data +
134 offset);
135 offset += sizeof(u32);
136 }
137
138 /* take frame length from Data header 32-bit word */
139 size = (u16)(rx->header & 0x7ff);
140 if (size != ((~rx->header >> 16) & 0x7ff)) {
141 netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n",
142 rx->header, offset);
143 reset_asix_rx_fixup_info(rx);
144 return 0;
145 }
146 if (size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {
147 netdev_dbg(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
148 size);
149 reset_asix_rx_fixup_info(rx);
150 return 0;
151 }
152
153 /* Sometimes may fail to get a netdev socket buffer but
154 * continue to process the URB socket buffer so that
155 * synchronisation of the Ethernet frame Data header
156 * word is maintained.
157 */
158 rx->ax_skb = netdev_alloc_skb_ip_align(dev->net, size);
159
160 rx->remaining = size;
161 }
162
163 if (rx->remaining > skb->len - offset) {
164 copy_length = skb->len - offset;
165 rx->remaining -= copy_length;
166 } else {
167 copy_length = rx->remaining;
168 rx->remaining = 0;
169 }
170
171 if (rx->ax_skb) {
172 skb_put_data(rx->ax_skb, skb->data + offset,
173 copy_length);
174 if (!rx->remaining) {
175 usbnet_skb_return(dev, rx->ax_skb);
176 rx->ax_skb = NULL;
177 }
178 }
179
180 offset += (copy_length + 1) & 0xfffe;
181 }
182
183 if (skb->len != offset) {
184 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n",
185 skb->len, offset);
186 reset_asix_rx_fixup_info(rx);
187 return 0;
188 }
189
190 return 1;
191}
192
193int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb)
194{
195 struct asix_common_private *dp = dev->driver_priv;
196 struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
197
198 return asix_rx_fixup_internal(dev, skb, rx);
199}
200
201void asix_rx_fixup_common_free(struct asix_common_private *dp)
202{
203 struct asix_rx_fixup_info *rx;
204
205 if (!dp)
206 return;
207
208 rx = &dp->rx_fixup_info;
209
210 if (rx->ax_skb) {
211 kfree_skb(rx->ax_skb);
212 rx->ax_skb = NULL;
213 }
214}
215
216struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
217 gfp_t flags)
218{
219 int padlen;
220 int headroom = skb_headroom(skb);
221 int tailroom = skb_tailroom(skb);
222 u32 packet_len;
223 u32 padbytes = 0xffff0000;
224 void *ptr;
225
226 padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
227
228 /* We need to push 4 bytes in front of frame (packet_len)
229 * and maybe add 4 bytes after the end (if padlen is 4)
230 *
231 * Avoid skb_copy_expand() expensive call, using following rules :
232 * - We are allowed to push 4 bytes in headroom if skb_header_cloned()
233 * is false (and if we have 4 bytes of headroom)
234 * - We are allowed to put 4 bytes at tail if skb_cloned()
235 * is false (and if we have 4 bytes of tailroom)
236 *
237 * TCP packets for example are cloned, but __skb_header_release()
238 * was called in tcp stack, allowing us to use headroom for our needs.
239 */
240 if (!skb_header_cloned(skb) &&
241 !(padlen && skb_cloned(skb)) &&
242 headroom + tailroom >= 4 + padlen) {
243 /* following should not happen, but better be safe */
244 if (headroom < 4 ||
245 tailroom < padlen) {
246 skb->data = memmove(skb->head + 4, skb->data, skb->len);
247 skb_set_tail_pointer(skb, skb->len);
248 }
249 } else {
250 struct sk_buff *skb2;
251
252 skb2 = skb_copy_expand(skb, 4, padlen, flags);
253 dev_kfree_skb_any(skb);
254 skb = skb2;
255 if (!skb)
256 return NULL;
257 }
258
259 packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
260 ptr = skb_push(skb, 4);
261 put_unaligned_le32(packet_len, ptr);
262
263 if (padlen) {
264 put_unaligned_le32(padbytes, skb_tail_pointer(skb));
265 skb_put(skb, sizeof(padbytes));
266 }
267
268 usbnet_set_skb_tx_stats(skb, 1, 0);
269 return skb;
270}
271
272int asix_set_sw_mii(struct usbnet *dev, int in_pm)
273{
274 int ret;
275 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL, in_pm);
276
277 if (ret < 0)
278 netdev_err(dev->net, "Failed to enable software MII access\n");
279 return ret;
280}
281
282int asix_set_hw_mii(struct usbnet *dev, int in_pm)
283{
284 int ret;
285 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL, in_pm);
286 if (ret < 0)
287 netdev_err(dev->net, "Failed to enable hardware MII access\n");
288 return ret;
289}
290
291int asix_read_phy_addr(struct usbnet *dev, int internal)
292{
293 int offset = (internal ? 1 : 0);
294 u8 buf[2];
295 int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf, 0);
296
297 netdev_dbg(dev->net, "asix_get_phy_addr()\n");
298
299 if (ret < 2) {
300 netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
301 goto out;
302 }
303 netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
304 *((__le16 *)buf));
305 ret = buf[offset];
306
307out:
308 return ret;
309}
310
311int asix_get_phy_addr(struct usbnet *dev)
312{
313 /* return the address of the internal phy */
314 return asix_read_phy_addr(dev, 1);
315}
316
317
318int asix_sw_reset(struct usbnet *dev, u8 flags, int in_pm)
319{
320 int ret;
321
322 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL, in_pm);
323 if (ret < 0)
324 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
325
326 return ret;
327}
328
329u16 asix_read_rx_ctl(struct usbnet *dev, int in_pm)
330{
331 __le16 v;
332 int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v, in_pm);
333
334 if (ret < 0) {
335 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
336 goto out;
337 }
338 ret = le16_to_cpu(v);
339out:
340 return ret;
341}
342
343int asix_write_rx_ctl(struct usbnet *dev, u16 mode, int in_pm)
344{
345 int ret;
346
347 netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
348 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL, in_pm);
349 if (ret < 0)
350 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
351 mode, ret);
352
353 return ret;
354}
355
356u16 asix_read_medium_status(struct usbnet *dev, int in_pm)
357{
358 __le16 v;
359 int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS,
360 0, 0, 2, &v, in_pm);
361
362 if (ret < 0) {
363 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
364 ret);
365 return ret; /* TODO: callers not checking for error ret */
366 }
367
368 return le16_to_cpu(v);
369
370}
371
372int asix_write_medium_mode(struct usbnet *dev, u16 mode, int in_pm)
373{
374 int ret;
375
376 netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
377 ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE,
378 mode, 0, 0, NULL, in_pm);
379 if (ret < 0)
380 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
381 mode, ret);
382
383 return ret;
384}
385
386int asix_write_gpio(struct usbnet *dev, u16 value, int sleep, int in_pm)
387{
388 int ret;
389
390 netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
391 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL, in_pm);
392 if (ret < 0)
393 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
394 value, ret);
395
396 if (sleep)
397 msleep(sleep);
398
399 return ret;
400}
401
402/*
403 * AX88772 & AX88178 have a 16-bit RX_CTL value
404 */
405void asix_set_multicast(struct net_device *net)
406{
407 struct usbnet *dev = netdev_priv(net);
408 struct asix_data *data = (struct asix_data *)&dev->data;
409 u16 rx_ctl = AX_DEFAULT_RX_CTL;
410
411 if (net->flags & IFF_PROMISC) {
412 rx_ctl |= AX_RX_CTL_PRO;
413 } else if (net->flags & IFF_ALLMULTI ||
414 netdev_mc_count(net) > AX_MAX_MCAST) {
415 rx_ctl |= AX_RX_CTL_AMALL;
416 } else if (netdev_mc_empty(net)) {
417 /* just broadcast and directed */
418 } else {
419 /* We use the 20 byte dev->data
420 * for our 8 byte filter buffer
421 * to avoid allocating memory that
422 * is tricky to free later */
423 struct netdev_hw_addr *ha;
424 u32 crc_bits;
425
426 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
427
428 /* Build the multicast hash filter. */
429 netdev_for_each_mc_addr(ha, net) {
430 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
431 data->multi_filter[crc_bits >> 3] |=
432 1 << (crc_bits & 7);
433 }
434
435 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
436 AX_MCAST_FILTER_SIZE, data->multi_filter);
437
438 rx_ctl |= AX_RX_CTL_AM;
439 }
440
441 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
442}
443
444int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
445{
446 struct usbnet *dev = netdev_priv(netdev);
447 __le16 res;
448 u8 smsr;
449 int i = 0;
450 int ret;
451
452 mutex_lock(&dev->phy_mutex);
453 do {
454 ret = asix_set_sw_mii(dev, 0);
455 if (ret == -ENODEV || ret == -ETIMEDOUT)
456 break;
457 usleep_range(1000, 1100);
458 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
459 0, 0, 1, &smsr, 0);
460 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
461 if (ret == -ENODEV || ret == -ETIMEDOUT) {
462 mutex_unlock(&dev->phy_mutex);
463 return ret;
464 }
465
466 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
467 (__u16)loc, 2, &res, 0);
468 asix_set_hw_mii(dev, 0);
469 mutex_unlock(&dev->phy_mutex);
470
471 netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
472 phy_id, loc, le16_to_cpu(res));
473
474 return le16_to_cpu(res);
475}
476
477void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
478{
479 struct usbnet *dev = netdev_priv(netdev);
480 __le16 res = cpu_to_le16(val);
481 u8 smsr;
482 int i = 0;
483 int ret;
484
485 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
486 phy_id, loc, val);
487
488 mutex_lock(&dev->phy_mutex);
489 do {
490 ret = asix_set_sw_mii(dev, 0);
491 if (ret == -ENODEV)
492 break;
493 usleep_range(1000, 1100);
494 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
495 0, 0, 1, &smsr, 0);
496 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
497 if (ret == -ENODEV) {
498 mutex_unlock(&dev->phy_mutex);
499 return;
500 }
501
502 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
503 (__u16)loc, 2, &res, 0);
504 asix_set_hw_mii(dev, 0);
505 mutex_unlock(&dev->phy_mutex);
506}
507
508int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc)
509{
510 struct usbnet *dev = netdev_priv(netdev);
511 __le16 res;
512 u8 smsr;
513 int i = 0;
514 int ret;
515
516 mutex_lock(&dev->phy_mutex);
517 do {
518 ret = asix_set_sw_mii(dev, 1);
519 if (ret == -ENODEV || ret == -ETIMEDOUT)
520 break;
521 usleep_range(1000, 1100);
522 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
523 0, 0, 1, &smsr, 1);
524 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
525 if (ret == -ENODEV || ret == -ETIMEDOUT) {
526 mutex_unlock(&dev->phy_mutex);
527 return ret;
528 }
529
530 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
531 (__u16)loc, 2, &res, 1);
532 asix_set_hw_mii(dev, 1);
533 mutex_unlock(&dev->phy_mutex);
534
535 netdev_dbg(dev->net, "asix_mdio_read_nopm() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
536 phy_id, loc, le16_to_cpu(res));
537
538 return le16_to_cpu(res);
539}
540
541void
542asix_mdio_write_nopm(struct net_device *netdev, int phy_id, int loc, int val)
543{
544 struct usbnet *dev = netdev_priv(netdev);
545 __le16 res = cpu_to_le16(val);
546 u8 smsr;
547 int i = 0;
548 int ret;
549
550 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
551 phy_id, loc, val);
552
553 mutex_lock(&dev->phy_mutex);
554 do {
555 ret = asix_set_sw_mii(dev, 1);
556 if (ret == -ENODEV)
557 break;
558 usleep_range(1000, 1100);
559 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
560 0, 0, 1, &smsr, 1);
561 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
562 if (ret == -ENODEV) {
563 mutex_unlock(&dev->phy_mutex);
564 return;
565 }
566
567 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
568 (__u16)loc, 2, &res, 1);
569 asix_set_hw_mii(dev, 1);
570 mutex_unlock(&dev->phy_mutex);
571}
572
573void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
574{
575 struct usbnet *dev = netdev_priv(net);
576 u8 opt;
577
578 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE,
579 0, 0, 1, &opt, 0) < 0) {
580 wolinfo->supported = 0;
581 wolinfo->wolopts = 0;
582 return;
583 }
584 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
585 wolinfo->wolopts = 0;
586 if (opt & AX_MONITOR_LINK)
587 wolinfo->wolopts |= WAKE_PHY;
588 if (opt & AX_MONITOR_MAGIC)
589 wolinfo->wolopts |= WAKE_MAGIC;
590}
591
592int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
593{
594 struct usbnet *dev = netdev_priv(net);
595 u8 opt = 0;
596
597 if (wolinfo->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
598 return -EINVAL;
599
600 if (wolinfo->wolopts & WAKE_PHY)
601 opt |= AX_MONITOR_LINK;
602 if (wolinfo->wolopts & WAKE_MAGIC)
603 opt |= AX_MONITOR_MAGIC;
604
605 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
606 opt, 0, 0, NULL, 0) < 0)
607 return -EINVAL;
608
609 return 0;
610}
611
612int asix_get_eeprom_len(struct net_device *net)
613{
614 return AX_EEPROM_LEN;
615}
616
617int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
618 u8 *data)
619{
620 struct usbnet *dev = netdev_priv(net);
621 u16 *eeprom_buff;
622 int first_word, last_word;
623 int i;
624
625 if (eeprom->len == 0)
626 return -EINVAL;
627
628 eeprom->magic = AX_EEPROM_MAGIC;
629
630 first_word = eeprom->offset >> 1;
631 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
632
633 eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
634 GFP_KERNEL);
635 if (!eeprom_buff)
636 return -ENOMEM;
637
638 /* ax8817x returns 2 bytes from eeprom on read */
639 for (i = first_word; i <= last_word; i++) {
640 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
641 &eeprom_buff[i - first_word], 0) < 0) {
642 kfree(eeprom_buff);
643 return -EIO;
644 }
645 }
646
647 memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
648 kfree(eeprom_buff);
649 return 0;
650}
651
652int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
653 u8 *data)
654{
655 struct usbnet *dev = netdev_priv(net);
656 u16 *eeprom_buff;
657 int first_word, last_word;
658 int i;
659 int ret;
660
661 netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
662 eeprom->len, eeprom->offset, eeprom->magic);
663
664 if (eeprom->len == 0)
665 return -EINVAL;
666
667 if (eeprom->magic != AX_EEPROM_MAGIC)
668 return -EINVAL;
669
670 first_word = eeprom->offset >> 1;
671 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
672
673 eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
674 GFP_KERNEL);
675 if (!eeprom_buff)
676 return -ENOMEM;
677
678 /* align data to 16 bit boundaries, read the missing data from
679 the EEPROM */
680 if (eeprom->offset & 1) {
681 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,
682 &eeprom_buff[0], 0);
683 if (ret < 0) {
684 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
685 goto free;
686 }
687 }
688
689 if ((eeprom->offset + eeprom->len) & 1) {
690 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,
691 &eeprom_buff[last_word - first_word], 0);
692 if (ret < 0) {
693 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
694 goto free;
695 }
696 }
697
698 memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
699
700 /* write data to EEPROM */
701 ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL, 0);
702 if (ret < 0) {
703 netdev_err(net, "Failed to enable EEPROM write\n");
704 goto free;
705 }
706 msleep(20);
707
708 for (i = first_word; i <= last_word; i++) {
709 netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
710 i, eeprom_buff[i - first_word]);
711 ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,
712 eeprom_buff[i - first_word], 0, NULL, 0);
713 if (ret < 0) {
714 netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",
715 i);
716 goto free;
717 }
718 msleep(20);
719 }
720
721 ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL, 0);
722 if (ret < 0) {
723 netdev_err(net, "Failed to disable EEPROM write\n");
724 goto free;
725 }
726
727 ret = 0;
728free:
729 kfree(eeprom_buff);
730 return ret;
731}
732
733void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
734{
735 /* Inherit standard device info */
736 usbnet_get_drvinfo(net, info);
737 strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
738 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
739}
740
741int asix_set_mac_address(struct net_device *net, void *p)
742{
743 struct usbnet *dev = netdev_priv(net);
744 struct asix_data *data = (struct asix_data *)&dev->data;
745 struct sockaddr *addr = p;
746
747 if (netif_running(net))
748 return -EBUSY;
749 if (!is_valid_ether_addr(addr->sa_data))
750 return -EADDRNOTAVAIL;
751
752 memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
753
754 /* We use the 20 byte dev->data
755 * for our 6 byte mac buffer
756 * to avoid allocating memory that
757 * is tricky to free later */
758 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
759 asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
760 data->mac_addr);
761
762 return 0;
763}