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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/*
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
78int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb,
79 struct asix_rx_fixup_info *rx)
80{
81 int offset = 0;
82 u16 size;
83
84 /* When an Ethernet frame spans multiple URB socket buffers,
85 * do a sanity test for the Data header synchronisation.
86 * Attempt to detect the situation of the previous socket buffer having
87 * been truncated or a socket buffer was missing. These situations
88 * cause a discontinuity in the data stream and therefore need to avoid
89 * appending bad data to the end of the current netdev socket buffer.
90 * Also avoid unnecessarily discarding a good current netdev socket
91 * buffer.
92 */
93 if (rx->remaining && (rx->remaining + sizeof(u32) <= skb->len)) {
94 offset = ((rx->remaining + 1) & 0xfffe);
95 rx->header = get_unaligned_le32(skb->data + offset);
96 offset = 0;
97
98 size = (u16)(rx->header & 0x7ff);
99 if (size != ((~rx->header >> 16) & 0x7ff)) {
100 netdev_err(dev->net, "asix_rx_fixup() Data Header synchronisation was lost, remaining %d\n",
101 rx->remaining);
102 if (rx->ax_skb) {
103 kfree_skb(rx->ax_skb);
104 rx->ax_skb = NULL;
105 /* Discard the incomplete netdev Ethernet frame
106 * and assume the Data header is at the start of
107 * the current URB socket buffer.
108 */
109 }
110 rx->remaining = 0;
111 }
112 }
113
114 while (offset + sizeof(u16) <= skb->len) {
115 u16 copy_length;
116 unsigned char *data;
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 return 0;
144 }
145 if (size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {
146 netdev_dbg(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
147 size);
148 return 0;
149 }
150
151 /* Sometimes may fail to get a netdev socket buffer but
152 * continue to process the URB socket buffer so that
153 * synchronisation of the Ethernet frame Data header
154 * word is maintained.
155 */
156 rx->ax_skb = netdev_alloc_skb_ip_align(dev->net, size);
157
158 rx->remaining = size;
159 }
160
161 if (rx->remaining > skb->len - offset) {
162 copy_length = skb->len - offset;
163 rx->remaining -= copy_length;
164 } else {
165 copy_length = rx->remaining;
166 rx->remaining = 0;
167 }
168
169 if (rx->ax_skb) {
170 data = skb_put(rx->ax_skb, copy_length);
171 memcpy(data, skb->data + offset, copy_length);
172 if (!rx->remaining)
173 usbnet_skb_return(dev, rx->ax_skb);
174 }
175
176 offset += (copy_length + 1) & 0xfffe;
177 }
178
179 if (skb->len != offset) {
180 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n",
181 skb->len, offset);
182 return 0;
183 }
184
185 return 1;
186}
187
188int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb)
189{
190 struct asix_common_private *dp = dev->driver_priv;
191 struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
192
193 return asix_rx_fixup_internal(dev, skb, rx);
194}
195
196struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
197 gfp_t flags)
198{
199 int padlen;
200 int headroom = skb_headroom(skb);
201 int tailroom = skb_tailroom(skb);
202 u32 packet_len;
203 u32 padbytes = 0xffff0000;
204
205 padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
206
207 /* We need to push 4 bytes in front of frame (packet_len)
208 * and maybe add 4 bytes after the end (if padlen is 4)
209 *
210 * Avoid skb_copy_expand() expensive call, using following rules :
211 * - We are allowed to push 4 bytes in headroom if skb_header_cloned()
212 * is false (and if we have 4 bytes of headroom)
213 * - We are allowed to put 4 bytes at tail if skb_cloned()
214 * is false (and if we have 4 bytes of tailroom)
215 *
216 * TCP packets for example are cloned, but skb_header_release()
217 * was called in tcp stack, allowing us to use headroom for our needs.
218 */
219 if (!skb_header_cloned(skb) &&
220 !(padlen && skb_cloned(skb)) &&
221 headroom + tailroom >= 4 + padlen) {
222 /* following should not happen, but better be safe */
223 if (headroom < 4 ||
224 tailroom < padlen) {
225 skb->data = memmove(skb->head + 4, skb->data, skb->len);
226 skb_set_tail_pointer(skb, skb->len);
227 }
228 } else {
229 struct sk_buff *skb2;
230
231 skb2 = skb_copy_expand(skb, 4, padlen, flags);
232 dev_kfree_skb_any(skb);
233 skb = skb2;
234 if (!skb)
235 return NULL;
236 }
237
238 packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
239 skb_push(skb, 4);
240 cpu_to_le32s(&packet_len);
241 skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
242
243 if (padlen) {
244 cpu_to_le32s(&padbytes);
245 memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
246 skb_put(skb, sizeof(padbytes));
247 }
248
249 usbnet_set_skb_tx_stats(skb, 1, 0);
250 return skb;
251}
252
253int asix_set_sw_mii(struct usbnet *dev, int in_pm)
254{
255 int ret;
256 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL, in_pm);
257
258 if (ret < 0)
259 netdev_err(dev->net, "Failed to enable software MII access\n");
260 return ret;
261}
262
263int asix_set_hw_mii(struct usbnet *dev, int in_pm)
264{
265 int ret;
266 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL, in_pm);
267 if (ret < 0)
268 netdev_err(dev->net, "Failed to enable hardware MII access\n");
269 return ret;
270}
271
272int asix_read_phy_addr(struct usbnet *dev, int internal)
273{
274 int offset = (internal ? 1 : 0);
275 u8 buf[2];
276 int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf, 0);
277
278 netdev_dbg(dev->net, "asix_get_phy_addr()\n");
279
280 if (ret < 0) {
281 netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
282 goto out;
283 }
284 netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
285 *((__le16 *)buf));
286 ret = buf[offset];
287
288out:
289 return ret;
290}
291
292int asix_get_phy_addr(struct usbnet *dev)
293{
294 /* return the address of the internal phy */
295 return asix_read_phy_addr(dev, 1);
296}
297
298
299int asix_sw_reset(struct usbnet *dev, u8 flags, int in_pm)
300{
301 int ret;
302
303 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL, in_pm);
304 if (ret < 0)
305 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
306
307 return ret;
308}
309
310u16 asix_read_rx_ctl(struct usbnet *dev, int in_pm)
311{
312 __le16 v;
313 int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v, in_pm);
314
315 if (ret < 0) {
316 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
317 goto out;
318 }
319 ret = le16_to_cpu(v);
320out:
321 return ret;
322}
323
324int asix_write_rx_ctl(struct usbnet *dev, u16 mode, int in_pm)
325{
326 int ret;
327
328 netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
329 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL, in_pm);
330 if (ret < 0)
331 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
332 mode, ret);
333
334 return ret;
335}
336
337u16 asix_read_medium_status(struct usbnet *dev, int in_pm)
338{
339 __le16 v;
340 int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS,
341 0, 0, 2, &v, in_pm);
342
343 if (ret < 0) {
344 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
345 ret);
346 return ret; /* TODO: callers not checking for error ret */
347 }
348
349 return le16_to_cpu(v);
350
351}
352
353int asix_write_medium_mode(struct usbnet *dev, u16 mode, int in_pm)
354{
355 int ret;
356
357 netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
358 ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE,
359 mode, 0, 0, NULL, in_pm);
360 if (ret < 0)
361 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
362 mode, ret);
363
364 return ret;
365}
366
367int asix_write_gpio(struct usbnet *dev, u16 value, int sleep, int in_pm)
368{
369 int ret;
370
371 netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
372 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL, in_pm);
373 if (ret < 0)
374 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
375 value, ret);
376
377 if (sleep)
378 msleep(sleep);
379
380 return ret;
381}
382
383/*
384 * AX88772 & AX88178 have a 16-bit RX_CTL value
385 */
386void asix_set_multicast(struct net_device *net)
387{
388 struct usbnet *dev = netdev_priv(net);
389 struct asix_data *data = (struct asix_data *)&dev->data;
390 u16 rx_ctl = AX_DEFAULT_RX_CTL;
391
392 if (net->flags & IFF_PROMISC) {
393 rx_ctl |= AX_RX_CTL_PRO;
394 } else if (net->flags & IFF_ALLMULTI ||
395 netdev_mc_count(net) > AX_MAX_MCAST) {
396 rx_ctl |= AX_RX_CTL_AMALL;
397 } else if (netdev_mc_empty(net)) {
398 /* just broadcast and directed */
399 } else {
400 /* We use the 20 byte dev->data
401 * for our 8 byte filter buffer
402 * to avoid allocating memory that
403 * is tricky to free later */
404 struct netdev_hw_addr *ha;
405 u32 crc_bits;
406
407 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
408
409 /* Build the multicast hash filter. */
410 netdev_for_each_mc_addr(ha, net) {
411 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
412 data->multi_filter[crc_bits >> 3] |=
413 1 << (crc_bits & 7);
414 }
415
416 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
417 AX_MCAST_FILTER_SIZE, data->multi_filter);
418
419 rx_ctl |= AX_RX_CTL_AM;
420 }
421
422 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
423}
424
425int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
426{
427 struct usbnet *dev = netdev_priv(netdev);
428 __le16 res;
429 u8 smsr;
430 int i = 0;
431 int ret;
432
433 mutex_lock(&dev->phy_mutex);
434 do {
435 ret = asix_set_sw_mii(dev, 0);
436 if (ret == -ENODEV || ret == -ETIMEDOUT)
437 break;
438 usleep_range(1000, 1100);
439 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
440 0, 0, 1, &smsr, 0);
441 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
442 if (ret == -ENODEV || ret == -ETIMEDOUT) {
443 mutex_unlock(&dev->phy_mutex);
444 return ret;
445 }
446
447 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
448 (__u16)loc, 2, &res, 0);
449 asix_set_hw_mii(dev, 0);
450 mutex_unlock(&dev->phy_mutex);
451
452 netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
453 phy_id, loc, le16_to_cpu(res));
454
455 return le16_to_cpu(res);
456}
457
458void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
459{
460 struct usbnet *dev = netdev_priv(netdev);
461 __le16 res = cpu_to_le16(val);
462 u8 smsr;
463 int i = 0;
464 int ret;
465
466 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
467 phy_id, loc, val);
468
469 mutex_lock(&dev->phy_mutex);
470 do {
471 ret = asix_set_sw_mii(dev, 0);
472 if (ret == -ENODEV)
473 break;
474 usleep_range(1000, 1100);
475 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
476 0, 0, 1, &smsr, 0);
477 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
478 if (ret == -ENODEV) {
479 mutex_unlock(&dev->phy_mutex);
480 return;
481 }
482
483 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
484 (__u16)loc, 2, &res, 0);
485 asix_set_hw_mii(dev, 0);
486 mutex_unlock(&dev->phy_mutex);
487}
488
489int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc)
490{
491 struct usbnet *dev = netdev_priv(netdev);
492 __le16 res;
493 u8 smsr;
494 int i = 0;
495 int ret;
496
497 mutex_lock(&dev->phy_mutex);
498 do {
499 ret = asix_set_sw_mii(dev, 1);
500 if (ret == -ENODEV || ret == -ETIMEDOUT)
501 break;
502 usleep_range(1000, 1100);
503 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
504 0, 0, 1, &smsr, 1);
505 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
506 if (ret == -ENODEV || ret == -ETIMEDOUT) {
507 mutex_unlock(&dev->phy_mutex);
508 return ret;
509 }
510
511 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
512 (__u16)loc, 2, &res, 1);
513 asix_set_hw_mii(dev, 1);
514 mutex_unlock(&dev->phy_mutex);
515
516 netdev_dbg(dev->net, "asix_mdio_read_nopm() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
517 phy_id, loc, le16_to_cpu(res));
518
519 return le16_to_cpu(res);
520}
521
522void
523asix_mdio_write_nopm(struct net_device *netdev, int phy_id, int loc, int val)
524{
525 struct usbnet *dev = netdev_priv(netdev);
526 __le16 res = cpu_to_le16(val);
527 u8 smsr;
528 int i = 0;
529 int ret;
530
531 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
532 phy_id, loc, val);
533
534 mutex_lock(&dev->phy_mutex);
535 do {
536 ret = asix_set_sw_mii(dev, 1);
537 if (ret == -ENODEV)
538 break;
539 usleep_range(1000, 1100);
540 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
541 0, 0, 1, &smsr, 1);
542 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
543 if (ret == -ENODEV) {
544 mutex_unlock(&dev->phy_mutex);
545 return;
546 }
547
548 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
549 (__u16)loc, 2, &res, 1);
550 asix_set_hw_mii(dev, 1);
551 mutex_unlock(&dev->phy_mutex);
552}
553
554void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
555{
556 struct usbnet *dev = netdev_priv(net);
557 u8 opt;
558
559 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE,
560 0, 0, 1, &opt, 0) < 0) {
561 wolinfo->supported = 0;
562 wolinfo->wolopts = 0;
563 return;
564 }
565 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
566 wolinfo->wolopts = 0;
567 if (opt & AX_MONITOR_LINK)
568 wolinfo->wolopts |= WAKE_PHY;
569 if (opt & AX_MONITOR_MAGIC)
570 wolinfo->wolopts |= WAKE_MAGIC;
571}
572
573int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
574{
575 struct usbnet *dev = netdev_priv(net);
576 u8 opt = 0;
577
578 if (wolinfo->wolopts & WAKE_PHY)
579 opt |= AX_MONITOR_LINK;
580 if (wolinfo->wolopts & WAKE_MAGIC)
581 opt |= AX_MONITOR_MAGIC;
582
583 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
584 opt, 0, 0, NULL, 0) < 0)
585 return -EINVAL;
586
587 return 0;
588}
589
590int asix_get_eeprom_len(struct net_device *net)
591{
592 return AX_EEPROM_LEN;
593}
594
595int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
596 u8 *data)
597{
598 struct usbnet *dev = netdev_priv(net);
599 u16 *eeprom_buff;
600 int first_word, last_word;
601 int i;
602
603 if (eeprom->len == 0)
604 return -EINVAL;
605
606 eeprom->magic = AX_EEPROM_MAGIC;
607
608 first_word = eeprom->offset >> 1;
609 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
610
611 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
612 GFP_KERNEL);
613 if (!eeprom_buff)
614 return -ENOMEM;
615
616 /* ax8817x returns 2 bytes from eeprom on read */
617 for (i = first_word; i <= last_word; i++) {
618 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
619 &eeprom_buff[i - first_word], 0) < 0) {
620 kfree(eeprom_buff);
621 return -EIO;
622 }
623 }
624
625 memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
626 kfree(eeprom_buff);
627 return 0;
628}
629
630int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
631 u8 *data)
632{
633 struct usbnet *dev = netdev_priv(net);
634 u16 *eeprom_buff;
635 int first_word, last_word;
636 int i;
637 int ret;
638
639 netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
640 eeprom->len, eeprom->offset, eeprom->magic);
641
642 if (eeprom->len == 0)
643 return -EINVAL;
644
645 if (eeprom->magic != AX_EEPROM_MAGIC)
646 return -EINVAL;
647
648 first_word = eeprom->offset >> 1;
649 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
650
651 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
652 GFP_KERNEL);
653 if (!eeprom_buff)
654 return -ENOMEM;
655
656 /* align data to 16 bit boundaries, read the missing data from
657 the EEPROM */
658 if (eeprom->offset & 1) {
659 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,
660 &eeprom_buff[0], 0);
661 if (ret < 0) {
662 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
663 goto free;
664 }
665 }
666
667 if ((eeprom->offset + eeprom->len) & 1) {
668 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,
669 &eeprom_buff[last_word - first_word], 0);
670 if (ret < 0) {
671 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
672 goto free;
673 }
674 }
675
676 memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
677
678 /* write data to EEPROM */
679 ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL, 0);
680 if (ret < 0) {
681 netdev_err(net, "Failed to enable EEPROM write\n");
682 goto free;
683 }
684 msleep(20);
685
686 for (i = first_word; i <= last_word; i++) {
687 netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
688 i, eeprom_buff[i - first_word]);
689 ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,
690 eeprom_buff[i - first_word], 0, NULL, 0);
691 if (ret < 0) {
692 netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",
693 i);
694 goto free;
695 }
696 msleep(20);
697 }
698
699 ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL, 0);
700 if (ret < 0) {
701 netdev_err(net, "Failed to disable EEPROM write\n");
702 goto free;
703 }
704
705 ret = 0;
706free:
707 kfree(eeprom_buff);
708 return ret;
709}
710
711void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
712{
713 /* Inherit standard device info */
714 usbnet_get_drvinfo(net, info);
715 strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
716 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
717}
718
719int asix_set_mac_address(struct net_device *net, void *p)
720{
721 struct usbnet *dev = netdev_priv(net);
722 struct asix_data *data = (struct asix_data *)&dev->data;
723 struct sockaddr *addr = p;
724
725 if (netif_running(net))
726 return -EBUSY;
727 if (!is_valid_ether_addr(addr->sa_data))
728 return -EADDRNOTAVAIL;
729
730 memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
731
732 /* We use the 20 byte dev->data
733 * for our 6 byte mac buffer
734 * to avoid allocating memory that
735 * is tricky to free later */
736 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
737 asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
738 data->mac_addr);
739
740 return 0;
741}