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 | |
12 | #define AX_HOST_EN_RETRIES 30 |
13 | |
14 | int __must_check asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, |
15 | u16 size, void *data, int in_pm) |
16 | { |
17 | int ret; |
18 | int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); |
19 | |
20 | BUG_ON(!dev); |
21 | |
22 | if (!in_pm) |
23 | fn = usbnet_read_cmd; |
24 | else |
25 | fn = usbnet_read_cmd_nopm; |
26 | |
27 | ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
28 | value, index, data, size); |
29 | |
30 | if (unlikely(ret < size)) { |
31 | ret = ret < 0 ? ret : -ENODATA; |
32 | |
33 | netdev_warn(dev: dev->net, format: "Failed to read reg index 0x%04x: %d\n" , |
34 | index, ret); |
35 | } |
36 | |
37 | return ret; |
38 | } |
39 | |
40 | int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, |
41 | u16 size, void *data, int in_pm) |
42 | { |
43 | int ret; |
44 | int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); |
45 | |
46 | BUG_ON(!dev); |
47 | |
48 | if (!in_pm) |
49 | fn = usbnet_write_cmd; |
50 | else |
51 | fn = usbnet_write_cmd_nopm; |
52 | |
53 | ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
54 | value, index, data, size); |
55 | |
56 | if (unlikely(ret < 0)) |
57 | netdev_warn(dev: dev->net, format: "Failed to write reg index 0x%04x: %d\n" , |
58 | index, ret); |
59 | |
60 | return ret; |
61 | } |
62 | |
63 | void asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index, |
64 | u16 size, void *data) |
65 | { |
66 | usbnet_write_cmd_async(dev, cmd, |
67 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
68 | value, index, data, size); |
69 | } |
70 | |
71 | static int asix_set_sw_mii(struct usbnet *dev, int in_pm) |
72 | { |
73 | int ret; |
74 | |
75 | ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, value: 0x0000, index: 0, size: 0, NULL, in_pm); |
76 | |
77 | if (ret < 0) |
78 | netdev_err(dev: dev->net, format: "Failed to enable software MII access\n" ); |
79 | return ret; |
80 | } |
81 | |
82 | static int asix_set_hw_mii(struct usbnet *dev, int in_pm) |
83 | { |
84 | int ret; |
85 | |
86 | ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, value: 0x0000, index: 0, size: 0, NULL, in_pm); |
87 | if (ret < 0) |
88 | netdev_err(dev: dev->net, format: "Failed to enable hardware MII access\n" ); |
89 | return ret; |
90 | } |
91 | |
92 | static int asix_check_host_enable(struct usbnet *dev, int in_pm) |
93 | { |
94 | int i, ret; |
95 | u8 smsr; |
96 | |
97 | for (i = 0; i < AX_HOST_EN_RETRIES; ++i) { |
98 | ret = asix_set_sw_mii(dev, in_pm); |
99 | if (ret == -ENODEV || ret == -ETIMEDOUT) |
100 | break; |
101 | usleep_range(min: 1000, max: 1100); |
102 | ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG, |
103 | value: 0, index: 0, size: 1, data: &smsr, in_pm); |
104 | if (ret == -ENODEV) |
105 | break; |
106 | else if (ret < 0) |
107 | continue; |
108 | else if (smsr & AX_HOST_EN) |
109 | break; |
110 | } |
111 | |
112 | return i >= AX_HOST_EN_RETRIES ? -ETIMEDOUT : ret; |
113 | } |
114 | |
115 | static void reset_asix_rx_fixup_info(struct asix_rx_fixup_info *rx) |
116 | { |
117 | /* Reset the variables that have a lifetime outside of |
118 | * asix_rx_fixup_internal() so that future processing starts from a |
119 | * known set of initial conditions. |
120 | */ |
121 | |
122 | if (rx->ax_skb) { |
123 | /* Discard any incomplete Ethernet frame in the netdev buffer */ |
124 | kfree_skb(skb: rx->ax_skb); |
125 | rx->ax_skb = NULL; |
126 | } |
127 | |
128 | /* Assume the Data header 32-bit word is at the start of the current |
129 | * or next URB socket buffer so reset all the state variables. |
130 | */ |
131 | rx->remaining = 0; |
132 | rx->split_head = false; |
133 | rx->header = 0; |
134 | } |
135 | |
136 | int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb, |
137 | struct asix_rx_fixup_info *rx) |
138 | { |
139 | int offset = 0; |
140 | u16 size; |
141 | |
142 | /* When an Ethernet frame spans multiple URB socket buffers, |
143 | * do a sanity test for the Data header synchronisation. |
144 | * Attempt to detect the situation of the previous socket buffer having |
145 | * been truncated or a socket buffer was missing. These situations |
146 | * cause a discontinuity in the data stream and therefore need to avoid |
147 | * appending bad data to the end of the current netdev socket buffer. |
148 | * Also avoid unnecessarily discarding a good current netdev socket |
149 | * buffer. |
150 | */ |
151 | if (rx->remaining && (rx->remaining + sizeof(u32) <= skb->len)) { |
152 | offset = ((rx->remaining + 1) & 0xfffe); |
153 | rx->header = get_unaligned_le32(p: skb->data + offset); |
154 | offset = 0; |
155 | |
156 | size = (u16)(rx->header & 0x7ff); |
157 | if (size != ((~rx->header >> 16) & 0x7ff)) { |
158 | netdev_err(dev: dev->net, format: "asix_rx_fixup() Data Header synchronisation was lost, remaining %d\n" , |
159 | rx->remaining); |
160 | reset_asix_rx_fixup_info(rx); |
161 | } |
162 | } |
163 | |
164 | while (offset + sizeof(u16) <= skb->len) { |
165 | u16 copy_length; |
166 | |
167 | if (!rx->remaining) { |
168 | if (skb->len - offset == sizeof(u16)) { |
169 | rx->header = get_unaligned_le16( |
170 | p: skb->data + offset); |
171 | rx->split_head = true; |
172 | offset += sizeof(u16); |
173 | break; |
174 | } |
175 | |
176 | if (rx->split_head == true) { |
177 | rx->header |= (get_unaligned_le16( |
178 | p: skb->data + offset) << 16); |
179 | rx->split_head = false; |
180 | offset += sizeof(u16); |
181 | } else { |
182 | rx->header = get_unaligned_le32(p: skb->data + |
183 | offset); |
184 | offset += sizeof(u32); |
185 | } |
186 | |
187 | /* take frame length from Data header 32-bit word */ |
188 | size = (u16)(rx->header & 0x7ff); |
189 | if (size != ((~rx->header >> 16) & 0x7ff)) { |
190 | netdev_err(dev: dev->net, format: "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n" , |
191 | rx->header, offset); |
192 | reset_asix_rx_fixup_info(rx); |
193 | return 0; |
194 | } |
195 | if (size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) { |
196 | netdev_dbg(dev->net, "asix_rx_fixup() Bad RX Length %d\n" , |
197 | size); |
198 | reset_asix_rx_fixup_info(rx); |
199 | return 0; |
200 | } |
201 | |
202 | /* Sometimes may fail to get a netdev socket buffer but |
203 | * continue to process the URB socket buffer so that |
204 | * synchronisation of the Ethernet frame Data header |
205 | * word is maintained. |
206 | */ |
207 | rx->ax_skb = netdev_alloc_skb_ip_align(dev: dev->net, length: size); |
208 | |
209 | rx->remaining = size; |
210 | } |
211 | |
212 | if (rx->remaining > skb->len - offset) { |
213 | copy_length = skb->len - offset; |
214 | rx->remaining -= copy_length; |
215 | } else { |
216 | copy_length = rx->remaining; |
217 | rx->remaining = 0; |
218 | } |
219 | |
220 | if (rx->ax_skb) { |
221 | skb_put_data(skb: rx->ax_skb, data: skb->data + offset, |
222 | len: copy_length); |
223 | if (!rx->remaining) { |
224 | usbnet_skb_return(dev, rx->ax_skb); |
225 | rx->ax_skb = NULL; |
226 | } |
227 | } |
228 | |
229 | offset += (copy_length + 1) & 0xfffe; |
230 | } |
231 | |
232 | if (skb->len != offset) { |
233 | netdev_err(dev: dev->net, format: "asix_rx_fixup() Bad SKB Length %d, %d\n" , |
234 | skb->len, offset); |
235 | reset_asix_rx_fixup_info(rx); |
236 | return 0; |
237 | } |
238 | |
239 | return 1; |
240 | } |
241 | |
242 | int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb) |
243 | { |
244 | struct asix_common_private *dp = dev->driver_priv; |
245 | struct asix_rx_fixup_info *rx = &dp->rx_fixup_info; |
246 | |
247 | return asix_rx_fixup_internal(dev, skb, rx); |
248 | } |
249 | |
250 | void asix_rx_fixup_common_free(struct asix_common_private *dp) |
251 | { |
252 | struct asix_rx_fixup_info *rx; |
253 | |
254 | if (!dp) |
255 | return; |
256 | |
257 | rx = &dp->rx_fixup_info; |
258 | |
259 | if (rx->ax_skb) { |
260 | kfree_skb(skb: rx->ax_skb); |
261 | rx->ax_skb = NULL; |
262 | } |
263 | } |
264 | |
265 | struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb, |
266 | gfp_t flags) |
267 | { |
268 | int padlen; |
269 | int headroom = skb_headroom(skb); |
270 | int tailroom = skb_tailroom(skb); |
271 | u32 packet_len; |
272 | u32 padbytes = 0xffff0000; |
273 | void *ptr; |
274 | |
275 | padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4; |
276 | |
277 | /* We need to push 4 bytes in front of frame (packet_len) |
278 | * and maybe add 4 bytes after the end (if padlen is 4) |
279 | * |
280 | * Avoid skb_copy_expand() expensive call, using following rules : |
281 | * - We are allowed to push 4 bytes in headroom if skb_header_cloned() |
282 | * is false (and if we have 4 bytes of headroom) |
283 | * - We are allowed to put 4 bytes at tail if skb_cloned() |
284 | * is false (and if we have 4 bytes of tailroom) |
285 | * |
286 | * TCP packets for example are cloned, but __skb_header_release() |
287 | * was called in tcp stack, allowing us to use headroom for our needs. |
288 | */ |
289 | if (!skb_header_cloned(skb) && |
290 | !(padlen && skb_cloned(skb)) && |
291 | headroom + tailroom >= 4 + padlen) { |
292 | /* following should not happen, but better be safe */ |
293 | if (headroom < 4 || |
294 | tailroom < padlen) { |
295 | skb->data = memmove(skb->head + 4, skb->data, skb->len); |
296 | skb_set_tail_pointer(skb, offset: skb->len); |
297 | } |
298 | } else { |
299 | struct sk_buff *skb2; |
300 | |
301 | skb2 = skb_copy_expand(skb, newheadroom: 4, newtailroom: padlen, priority: flags); |
302 | dev_kfree_skb_any(skb); |
303 | skb = skb2; |
304 | if (!skb) |
305 | return NULL; |
306 | } |
307 | |
308 | packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len; |
309 | ptr = skb_push(skb, len: 4); |
310 | put_unaligned_le32(val: packet_len, p: ptr); |
311 | |
312 | if (padlen) { |
313 | put_unaligned_le32(val: padbytes, p: skb_tail_pointer(skb)); |
314 | skb_put(skb, len: sizeof(padbytes)); |
315 | } |
316 | |
317 | usbnet_set_skb_tx_stats(skb, packets: 1, bytes_delta: 0); |
318 | return skb; |
319 | } |
320 | |
321 | int asix_read_phy_addr(struct usbnet *dev, bool internal) |
322 | { |
323 | int ret, offset; |
324 | u8 buf[2]; |
325 | |
326 | ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, value: 0, index: 0, size: 2, data: buf, in_pm: 0); |
327 | if (ret < 0) |
328 | goto error; |
329 | |
330 | if (ret < 2) { |
331 | ret = -EIO; |
332 | goto error; |
333 | } |
334 | |
335 | offset = (internal ? 1 : 0); |
336 | ret = buf[offset]; |
337 | |
338 | netdev_dbg(dev->net, "%s PHY address 0x%x\n" , |
339 | internal ? "internal" : "external" , ret); |
340 | |
341 | return ret; |
342 | |
343 | error: |
344 | netdev_err(dev: dev->net, format: "Error reading PHY_ID register: %02x\n" , ret); |
345 | |
346 | return ret; |
347 | } |
348 | |
349 | int asix_sw_reset(struct usbnet *dev, u8 flags, int in_pm) |
350 | { |
351 | int ret; |
352 | |
353 | ret = asix_write_cmd(dev, AX_CMD_SW_RESET, value: flags, index: 0, size: 0, NULL, in_pm); |
354 | if (ret < 0) |
355 | netdev_err(dev: dev->net, format: "Failed to send software reset: %02x\n" , ret); |
356 | |
357 | return ret; |
358 | } |
359 | |
360 | u16 asix_read_rx_ctl(struct usbnet *dev, int in_pm) |
361 | { |
362 | __le16 v; |
363 | int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, value: 0, index: 0, size: 2, data: &v, in_pm); |
364 | |
365 | if (ret < 0) { |
366 | netdev_err(dev: dev->net, format: "Error reading RX_CTL register: %02x\n" , ret); |
367 | goto out; |
368 | } |
369 | ret = le16_to_cpu(v); |
370 | out: |
371 | return ret; |
372 | } |
373 | |
374 | int asix_write_rx_ctl(struct usbnet *dev, u16 mode, int in_pm) |
375 | { |
376 | int ret; |
377 | |
378 | netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n" , mode); |
379 | ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, value: mode, index: 0, size: 0, NULL, in_pm); |
380 | if (ret < 0) |
381 | netdev_err(dev: dev->net, format: "Failed to write RX_CTL mode to 0x%04x: %02x\n" , |
382 | mode, ret); |
383 | |
384 | return ret; |
385 | } |
386 | |
387 | u16 asix_read_medium_status(struct usbnet *dev, int in_pm) |
388 | { |
389 | __le16 v; |
390 | int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS, |
391 | value: 0, index: 0, size: 2, data: &v, in_pm); |
392 | |
393 | if (ret < 0) { |
394 | netdev_err(dev: dev->net, format: "Error reading Medium Status register: %02x\n" , |
395 | ret); |
396 | return ret; /* TODO: callers not checking for error ret */ |
397 | } |
398 | |
399 | return le16_to_cpu(v); |
400 | |
401 | } |
402 | |
403 | int asix_write_medium_mode(struct usbnet *dev, u16 mode, int in_pm) |
404 | { |
405 | int ret; |
406 | |
407 | netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n" , mode); |
408 | ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, |
409 | value: mode, index: 0, size: 0, NULL, in_pm); |
410 | if (ret < 0) |
411 | netdev_err(dev: dev->net, format: "Failed to write Medium Mode mode to 0x%04x: %02x\n" , |
412 | mode, ret); |
413 | |
414 | return ret; |
415 | } |
416 | |
417 | /* set MAC link settings according to information from phylib */ |
418 | void asix_adjust_link(struct net_device *netdev) |
419 | { |
420 | struct phy_device *phydev = netdev->phydev; |
421 | struct usbnet *dev = netdev_priv(dev: netdev); |
422 | u16 mode = 0; |
423 | |
424 | if (phydev->link) { |
425 | mode = AX88772_MEDIUM_DEFAULT; |
426 | |
427 | if (phydev->duplex == DUPLEX_HALF) |
428 | mode &= ~AX_MEDIUM_FD; |
429 | |
430 | if (phydev->speed != SPEED_100) |
431 | mode &= ~AX_MEDIUM_PS; |
432 | } |
433 | |
434 | asix_write_medium_mode(dev, mode, in_pm: 0); |
435 | phy_print_status(phydev); |
436 | usbnet_link_change(dev, phydev->link, 0); |
437 | } |
438 | |
439 | int asix_write_gpio(struct usbnet *dev, u16 value, int sleep, int in_pm) |
440 | { |
441 | int ret; |
442 | |
443 | netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n" , value); |
444 | ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, index: 0, size: 0, NULL, in_pm); |
445 | if (ret < 0) |
446 | netdev_err(dev: dev->net, format: "Failed to write GPIO value 0x%04x: %02x\n" , |
447 | value, ret); |
448 | |
449 | if (sleep) |
450 | msleep(msecs: sleep); |
451 | |
452 | return ret; |
453 | } |
454 | |
455 | /* |
456 | * AX88772 & AX88178 have a 16-bit RX_CTL value |
457 | */ |
458 | void asix_set_multicast(struct net_device *net) |
459 | { |
460 | struct usbnet *dev = netdev_priv(dev: net); |
461 | struct asix_data *data = (struct asix_data *)&dev->data; |
462 | u16 rx_ctl = AX_DEFAULT_RX_CTL; |
463 | |
464 | if (net->flags & IFF_PROMISC) { |
465 | rx_ctl |= AX_RX_CTL_PRO; |
466 | } else if (net->flags & IFF_ALLMULTI || |
467 | netdev_mc_count(net) > AX_MAX_MCAST) { |
468 | rx_ctl |= AX_RX_CTL_AMALL; |
469 | } else if (netdev_mc_empty(net)) { |
470 | /* just broadcast and directed */ |
471 | } else { |
472 | /* We use the 20 byte dev->data |
473 | * for our 8 byte filter buffer |
474 | * to avoid allocating memory that |
475 | * is tricky to free later */ |
476 | struct netdev_hw_addr *ha; |
477 | u32 crc_bits; |
478 | |
479 | memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE); |
480 | |
481 | /* Build the multicast hash filter. */ |
482 | netdev_for_each_mc_addr(ha, net) { |
483 | crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26; |
484 | data->multi_filter[crc_bits >> 3] |= |
485 | 1 << (crc_bits & 7); |
486 | } |
487 | |
488 | asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, value: 0, index: 0, |
489 | AX_MCAST_FILTER_SIZE, data: data->multi_filter); |
490 | |
491 | rx_ctl |= AX_RX_CTL_AM; |
492 | } |
493 | |
494 | asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, value: rx_ctl, index: 0, size: 0, NULL); |
495 | } |
496 | |
497 | static int __asix_mdio_read(struct net_device *netdev, int phy_id, int loc, |
498 | bool in_pm) |
499 | { |
500 | struct usbnet *dev = netdev_priv(dev: netdev); |
501 | __le16 res; |
502 | int ret; |
503 | |
504 | mutex_lock(&dev->phy_mutex); |
505 | |
506 | ret = asix_check_host_enable(dev, in_pm); |
507 | if (ret == -ENODEV || ret == -ETIMEDOUT) { |
508 | mutex_unlock(lock: &dev->phy_mutex); |
509 | return ret; |
510 | } |
511 | |
512 | ret = asix_read_cmd(dev, AX_CMD_READ_MII_REG, value: phy_id, index: (__u16)loc, size: 2, |
513 | data: &res, in_pm); |
514 | if (ret < 0) |
515 | goto out; |
516 | |
517 | ret = asix_set_hw_mii(dev, in_pm); |
518 | out: |
519 | mutex_unlock(lock: &dev->phy_mutex); |
520 | |
521 | netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n" , |
522 | phy_id, loc, le16_to_cpu(res)); |
523 | |
524 | return ret < 0 ? ret : le16_to_cpu(res); |
525 | } |
526 | |
527 | int asix_mdio_read(struct net_device *netdev, int phy_id, int loc) |
528 | { |
529 | return __asix_mdio_read(netdev, phy_id, loc, in_pm: false); |
530 | } |
531 | |
532 | static int __asix_mdio_write(struct net_device *netdev, int phy_id, int loc, |
533 | int val, bool in_pm) |
534 | { |
535 | struct usbnet *dev = netdev_priv(dev: netdev); |
536 | __le16 res = cpu_to_le16(val); |
537 | int ret; |
538 | |
539 | netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n" , |
540 | phy_id, loc, val); |
541 | |
542 | mutex_lock(&dev->phy_mutex); |
543 | |
544 | ret = asix_check_host_enable(dev, in_pm); |
545 | if (ret == -ENODEV) |
546 | goto out; |
547 | |
548 | ret = asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, value: phy_id, index: (__u16)loc, size: 2, |
549 | data: &res, in_pm); |
550 | if (ret < 0) |
551 | goto out; |
552 | |
553 | ret = asix_set_hw_mii(dev, in_pm); |
554 | out: |
555 | mutex_unlock(lock: &dev->phy_mutex); |
556 | |
557 | return ret < 0 ? ret : 0; |
558 | } |
559 | |
560 | void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val) |
561 | { |
562 | __asix_mdio_write(netdev, phy_id, loc, val, in_pm: false); |
563 | } |
564 | |
565 | /* MDIO read and write wrappers for phylib */ |
566 | int asix_mdio_bus_read(struct mii_bus *bus, int phy_id, int regnum) |
567 | { |
568 | struct usbnet *priv = bus->priv; |
569 | |
570 | return __asix_mdio_read(netdev: priv->net, phy_id, loc: regnum, in_pm: false); |
571 | } |
572 | |
573 | int asix_mdio_bus_write(struct mii_bus *bus, int phy_id, int regnum, u16 val) |
574 | { |
575 | struct usbnet *priv = bus->priv; |
576 | |
577 | return __asix_mdio_write(netdev: priv->net, phy_id, loc: regnum, val, in_pm: false); |
578 | } |
579 | |
580 | int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc) |
581 | { |
582 | return __asix_mdio_read(netdev, phy_id, loc, in_pm: true); |
583 | } |
584 | |
585 | void |
586 | asix_mdio_write_nopm(struct net_device *netdev, int phy_id, int loc, int val) |
587 | { |
588 | __asix_mdio_write(netdev, phy_id, loc, val, in_pm: true); |
589 | } |
590 | |
591 | void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) |
592 | { |
593 | struct usbnet *dev = netdev_priv(dev: net); |
594 | u8 opt; |
595 | |
596 | if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, |
597 | value: 0, index: 0, size: 1, data: &opt, in_pm: 0) < 0) { |
598 | wolinfo->supported = 0; |
599 | wolinfo->wolopts = 0; |
600 | return; |
601 | } |
602 | wolinfo->supported = WAKE_PHY | WAKE_MAGIC; |
603 | wolinfo->wolopts = 0; |
604 | if (opt & AX_MONITOR_LINK) |
605 | wolinfo->wolopts |= WAKE_PHY; |
606 | if (opt & AX_MONITOR_MAGIC) |
607 | wolinfo->wolopts |= WAKE_MAGIC; |
608 | } |
609 | |
610 | int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) |
611 | { |
612 | struct usbnet *dev = netdev_priv(dev: net); |
613 | u8 opt = 0; |
614 | |
615 | if (wolinfo->wolopts & ~(WAKE_PHY | WAKE_MAGIC)) |
616 | return -EINVAL; |
617 | |
618 | if (wolinfo->wolopts & WAKE_PHY) |
619 | opt |= AX_MONITOR_LINK; |
620 | if (wolinfo->wolopts & WAKE_MAGIC) |
621 | opt |= AX_MONITOR_MAGIC; |
622 | |
623 | if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE, |
624 | value: opt, index: 0, size: 0, NULL, in_pm: 0) < 0) |
625 | return -EINVAL; |
626 | |
627 | return 0; |
628 | } |
629 | |
630 | int asix_get_eeprom_len(struct net_device *net) |
631 | { |
632 | return AX_EEPROM_LEN; |
633 | } |
634 | |
635 | int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, |
636 | u8 *data) |
637 | { |
638 | struct usbnet *dev = netdev_priv(dev: net); |
639 | u16 *eeprom_buff; |
640 | int first_word, last_word; |
641 | int i; |
642 | |
643 | if (eeprom->len == 0) |
644 | return -EINVAL; |
645 | |
646 | eeprom->magic = AX_EEPROM_MAGIC; |
647 | |
648 | first_word = eeprom->offset >> 1; |
649 | last_word = (eeprom->offset + eeprom->len - 1) >> 1; |
650 | |
651 | eeprom_buff = kmalloc_array(n: last_word - first_word + 1, size: sizeof(u16), |
652 | GFP_KERNEL); |
653 | if (!eeprom_buff) |
654 | return -ENOMEM; |
655 | |
656 | /* ax8817x returns 2 bytes from eeprom on read */ |
657 | for (i = first_word; i <= last_word; i++) { |
658 | if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, value: i, index: 0, size: 2, |
659 | data: &eeprom_buff[i - first_word], in_pm: 0) < 0) { |
660 | kfree(objp: eeprom_buff); |
661 | return -EIO; |
662 | } |
663 | } |
664 | |
665 | memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len); |
666 | kfree(objp: eeprom_buff); |
667 | return 0; |
668 | } |
669 | |
670 | int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, |
671 | u8 *data) |
672 | { |
673 | struct usbnet *dev = netdev_priv(dev: net); |
674 | u16 *eeprom_buff; |
675 | int first_word, last_word; |
676 | int i; |
677 | int ret; |
678 | |
679 | netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n" , |
680 | eeprom->len, eeprom->offset, eeprom->magic); |
681 | |
682 | if (eeprom->len == 0) |
683 | return -EINVAL; |
684 | |
685 | if (eeprom->magic != AX_EEPROM_MAGIC) |
686 | return -EINVAL; |
687 | |
688 | first_word = eeprom->offset >> 1; |
689 | last_word = (eeprom->offset + eeprom->len - 1) >> 1; |
690 | |
691 | eeprom_buff = kmalloc_array(n: last_word - first_word + 1, size: sizeof(u16), |
692 | GFP_KERNEL); |
693 | if (!eeprom_buff) |
694 | return -ENOMEM; |
695 | |
696 | /* align data to 16 bit boundaries, read the missing data from |
697 | the EEPROM */ |
698 | if (eeprom->offset & 1) { |
699 | ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, value: first_word, index: 0, size: 2, |
700 | data: &eeprom_buff[0], in_pm: 0); |
701 | if (ret < 0) { |
702 | netdev_err(dev: net, format: "Failed to read EEPROM at offset 0x%02x.\n" , first_word); |
703 | goto free; |
704 | } |
705 | } |
706 | |
707 | if ((eeprom->offset + eeprom->len) & 1) { |
708 | ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, value: last_word, index: 0, size: 2, |
709 | data: &eeprom_buff[last_word - first_word], in_pm: 0); |
710 | if (ret < 0) { |
711 | netdev_err(dev: net, format: "Failed to read EEPROM at offset 0x%02x.\n" , last_word); |
712 | goto free; |
713 | } |
714 | } |
715 | |
716 | memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len); |
717 | |
718 | /* write data to EEPROM */ |
719 | ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, value: 0x0000, index: 0, size: 0, NULL, in_pm: 0); |
720 | if (ret < 0) { |
721 | netdev_err(dev: net, format: "Failed to enable EEPROM write\n" ); |
722 | goto free; |
723 | } |
724 | msleep(msecs: 20); |
725 | |
726 | for (i = first_word; i <= last_word; i++) { |
727 | netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n" , |
728 | i, eeprom_buff[i - first_word]); |
729 | ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, value: i, |
730 | index: eeprom_buff[i - first_word], size: 0, NULL, in_pm: 0); |
731 | if (ret < 0) { |
732 | netdev_err(dev: net, format: "Failed to write EEPROM at offset 0x%02x.\n" , |
733 | i); |
734 | goto free; |
735 | } |
736 | msleep(msecs: 20); |
737 | } |
738 | |
739 | ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, value: 0x0000, index: 0, size: 0, NULL, in_pm: 0); |
740 | if (ret < 0) { |
741 | netdev_err(dev: net, format: "Failed to disable EEPROM write\n" ); |
742 | goto free; |
743 | } |
744 | |
745 | ret = 0; |
746 | free: |
747 | kfree(objp: eeprom_buff); |
748 | return ret; |
749 | } |
750 | |
751 | void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info) |
752 | { |
753 | /* Inherit standard device info */ |
754 | usbnet_get_drvinfo(net, info); |
755 | strscpy(info->driver, DRIVER_NAME, sizeof(info->driver)); |
756 | strscpy(info->version, DRIVER_VERSION, sizeof(info->version)); |
757 | } |
758 | |
759 | int asix_set_mac_address(struct net_device *net, void *p) |
760 | { |
761 | struct usbnet *dev = netdev_priv(dev: net); |
762 | struct asix_data *data = (struct asix_data *)&dev->data; |
763 | struct sockaddr *addr = p; |
764 | |
765 | if (netif_running(dev: net)) |
766 | return -EBUSY; |
767 | if (!is_valid_ether_addr(addr: addr->sa_data)) |
768 | return -EADDRNOTAVAIL; |
769 | |
770 | eth_hw_addr_set(dev: net, addr: addr->sa_data); |
771 | |
772 | /* We use the 20 byte dev->data |
773 | * for our 6 byte mac buffer |
774 | * to avoid allocating memory that |
775 | * is tricky to free later */ |
776 | memcpy(data->mac_addr, addr->sa_data, ETH_ALEN); |
777 | asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, value: 0, index: 0, ETH_ALEN, |
778 | data: data->mac_addr); |
779 | |
780 | return 0; |
781 | } |
782 | |