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Avoid beyond bounds copy while caching ACL
[zen-stable.git] / drivers / net / usb / asix.c
blobc7ada2295a9e53ccbbb738851ea5db4a0f203043
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, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23 // #define DEBUG // error path messages, extra info
24 // #define VERBOSE // more; success messages
25
26 #include <linux/module.h>
27 #include <linux/kmod.h>
28 #include <linux/init.h>
29 #include <linux/netdevice.h>
30 #include <linux/etherdevice.h>
31 #include <linux/ethtool.h>
32 #include <linux/workqueue.h>
33 #include <linux/mii.h>
34 #include <linux/usb.h>
35 #include <linux/crc32.h>
36 #include <linux/usb/usbnet.h>
37 #include <linux/slab.h>
38
39 #define DRIVER_VERSION "22-Dec-2011"
40 #define DRIVER_NAME "asix"
41
42 /* ASIX AX8817X based USB 2.0 Ethernet Devices */
43
44 #define AX_CMD_SET_SW_MII 0x06
45 #define AX_CMD_READ_MII_REG 0x07
46 #define AX_CMD_WRITE_MII_REG 0x08
47 #define AX_CMD_SET_HW_MII 0x0a
48 #define AX_CMD_READ_EEPROM 0x0b
49 #define AX_CMD_WRITE_EEPROM 0x0c
50 #define AX_CMD_WRITE_ENABLE 0x0d
51 #define AX_CMD_WRITE_DISABLE 0x0e
52 #define AX_CMD_READ_RX_CTL 0x0f
53 #define AX_CMD_WRITE_RX_CTL 0x10
54 #define AX_CMD_READ_IPG012 0x11
55 #define AX_CMD_WRITE_IPG0 0x12
56 #define AX_CMD_WRITE_IPG1 0x13
57 #define AX_CMD_READ_NODE_ID 0x13
58 #define AX_CMD_WRITE_NODE_ID 0x14
59 #define AX_CMD_WRITE_IPG2 0x14
60 #define AX_CMD_WRITE_MULTI_FILTER 0x16
61 #define AX88172_CMD_READ_NODE_ID 0x17
62 #define AX_CMD_READ_PHY_ID 0x19
63 #define AX_CMD_READ_MEDIUM_STATUS 0x1a
64 #define AX_CMD_WRITE_MEDIUM_MODE 0x1b
65 #define AX_CMD_READ_MONITOR_MODE 0x1c
66 #define AX_CMD_WRITE_MONITOR_MODE 0x1d
67 #define AX_CMD_READ_GPIOS 0x1e
68 #define AX_CMD_WRITE_GPIOS 0x1f
69 #define AX_CMD_SW_RESET 0x20
70 #define AX_CMD_SW_PHY_STATUS 0x21
71 #define AX_CMD_SW_PHY_SELECT 0x22
72
73 #define AX_MONITOR_MODE 0x01
74 #define AX_MONITOR_LINK 0x02
75 #define AX_MONITOR_MAGIC 0x04
76 #define AX_MONITOR_HSFS 0x10
77
78 /* AX88172 Medium Status Register values */
79 #define AX88172_MEDIUM_FD 0x02
80 #define AX88172_MEDIUM_TX 0x04
81 #define AX88172_MEDIUM_FC 0x10
82 #define AX88172_MEDIUM_DEFAULT \
83 ( AX88172_MEDIUM_FD | AX88172_MEDIUM_TX | AX88172_MEDIUM_FC )
84
85 #define AX_MCAST_FILTER_SIZE 8
86 #define AX_MAX_MCAST 64
87
88 #define AX_SWRESET_CLEAR 0x00
89 #define AX_SWRESET_RR 0x01
90 #define AX_SWRESET_RT 0x02
91 #define AX_SWRESET_PRTE 0x04
92 #define AX_SWRESET_PRL 0x08
93 #define AX_SWRESET_BZ 0x10
94 #define AX_SWRESET_IPRL 0x20
95 #define AX_SWRESET_IPPD 0x40
96
97 #define AX88772_IPG0_DEFAULT 0x15
98 #define AX88772_IPG1_DEFAULT 0x0c
99 #define AX88772_IPG2_DEFAULT 0x12
100
101 /* AX88772 & AX88178 Medium Mode Register */
102 #define AX_MEDIUM_PF 0x0080
103 #define AX_MEDIUM_JFE 0x0040
104 #define AX_MEDIUM_TFC 0x0020
105 #define AX_MEDIUM_RFC 0x0010
106 #define AX_MEDIUM_ENCK 0x0008
107 #define AX_MEDIUM_AC 0x0004
108 #define AX_MEDIUM_FD 0x0002
109 #define AX_MEDIUM_GM 0x0001
110 #define AX_MEDIUM_SM 0x1000
111 #define AX_MEDIUM_SBP 0x0800
112 #define AX_MEDIUM_PS 0x0200
113 #define AX_MEDIUM_RE 0x0100
114
115 #define AX88178_MEDIUM_DEFAULT \
116 (AX_MEDIUM_PS | AX_MEDIUM_FD | AX_MEDIUM_AC | \
117 AX_MEDIUM_RFC | AX_MEDIUM_TFC | AX_MEDIUM_JFE | \
118 AX_MEDIUM_RE)
119
120 #define AX88772_MEDIUM_DEFAULT \
121 (AX_MEDIUM_FD | AX_MEDIUM_RFC | \
122 AX_MEDIUM_TFC | AX_MEDIUM_PS | \
123 AX_MEDIUM_AC | AX_MEDIUM_RE)
124
125 /* AX88772 & AX88178 RX_CTL values */
126 #define AX_RX_CTL_SO 0x0080
127 #define AX_RX_CTL_AP 0x0020
128 #define AX_RX_CTL_AM 0x0010
129 #define AX_RX_CTL_AB 0x0008
130 #define AX_RX_CTL_SEP 0x0004
131 #define AX_RX_CTL_AMALL 0x0002
132 #define AX_RX_CTL_PRO 0x0001
133 #define AX_RX_CTL_MFB_2048 0x0000
134 #define AX_RX_CTL_MFB_4096 0x0100
135 #define AX_RX_CTL_MFB_8192 0x0200
136 #define AX_RX_CTL_MFB_16384 0x0300
137
138 #define AX_DEFAULT_RX_CTL (AX_RX_CTL_SO | AX_RX_CTL_AB)
139
140 /* GPIO 0 .. 2 toggles */
141 #define AX_GPIO_GPO0EN 0x01 /* GPIO0 Output enable */
142 #define AX_GPIO_GPO_0 0x02 /* GPIO0 Output value */
143 #define AX_GPIO_GPO1EN 0x04 /* GPIO1 Output enable */
144 #define AX_GPIO_GPO_1 0x08 /* GPIO1 Output value */
145 #define AX_GPIO_GPO2EN 0x10 /* GPIO2 Output enable */
146 #define AX_GPIO_GPO_2 0x20 /* GPIO2 Output value */
147 #define AX_GPIO_RESERVED 0x40 /* Reserved */
148 #define AX_GPIO_RSE 0x80 /* Reload serial EEPROM */
149
150 #define AX_EEPROM_MAGIC 0xdeadbeef
151 #define AX88172_EEPROM_LEN 0x40
152 #define AX88772_EEPROM_LEN 0xff
153
154 #define PHY_MODE_MARVELL 0x0000
155 #define MII_MARVELL_LED_CTRL 0x0018
156 #define MII_MARVELL_STATUS 0x001b
157 #define MII_MARVELL_CTRL 0x0014
158
159 #define MARVELL_LED_MANUAL 0x0019
160
161 #define MARVELL_STATUS_HWCFG 0x0004
162
163 #define MARVELL_CTRL_TXDELAY 0x0002
164 #define MARVELL_CTRL_RXDELAY 0x0080
165
166 #define PHY_MODE_RTL8211CL 0x000C
167
168 /* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
169 struct asix_data {
170 u8 multi_filter[AX_MCAST_FILTER_SIZE];
171 u8 mac_addr[ETH_ALEN];
172 u8 phymode;
173 u8 ledmode;
174 u8 eeprom_len;
175 };
176
177 struct ax88172_int_data {
178 __le16 res1;
179 u8 link;
180 __le16 res2;
181 u8 status;
182 __le16 res3;
183 } __packed;
184
185 static int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
186 u16 size, void *data)
187 {
188 void *buf;
189 int err = -ENOMEM;
190
191 netdev_dbg(dev->net, "asix_read_cmd() cmd=0x%02x value=0x%04x index=0x%04x size=%d\n",
192 cmd, value, index, size);
193
194 buf = kmalloc(size, GFP_KERNEL);
195 if (!buf)
196 goto out;
197
198 err = usb_control_msg(
199 dev->udev,
200 usb_rcvctrlpipe(dev->udev, 0),
201 cmd,
202 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
203 value,
204 index,
205 buf,
206 size,
207 USB_CTRL_GET_TIMEOUT);
208 if (err == size)
209 memcpy(data, buf, size);
210 else if (err >= 0)
211 err = -EINVAL;
212 kfree(buf);
213
214 out:
215 return err;
216 }
217
218 static int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
219 u16 size, void *data)
220 {
221 void *buf = NULL;
222 int err = -ENOMEM;
223
224 netdev_dbg(dev->net, "asix_write_cmd() cmd=0x%02x value=0x%04x index=0x%04x size=%d\n",
225 cmd, value, index, size);
226
227 if (data) {
228 buf = kmemdup(data, size, GFP_KERNEL);
229 if (!buf)
230 goto out;
231 }
232
233 err = usb_control_msg(
234 dev->udev,
235 usb_sndctrlpipe(dev->udev, 0),
236 cmd,
237 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
238 value,
239 index,
240 buf,
241 size,
242 USB_CTRL_SET_TIMEOUT);
243 kfree(buf);
244
245 out:
246 return err;
247 }
248
249 static void asix_async_cmd_callback(struct urb *urb)
250 {
251 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
252 int status = urb->status;
253
254 if (status < 0)
255 printk(KERN_DEBUG "asix_async_cmd_callback() failed with %d",
256 status);
257
258 kfree(req);
259 usb_free_urb(urb);
260 }
261
262 static void
263 asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
264 u16 size, void *data)
265 {
266 struct usb_ctrlrequest *req;
267 int status;
268 struct urb *urb;
269
270 netdev_dbg(dev->net, "asix_write_cmd_async() cmd=0x%02x value=0x%04x index=0x%04x size=%d\n",
271 cmd, value, index, size);
272
273 urb = usb_alloc_urb(0, GFP_ATOMIC);
274 if (!urb) {
275 netdev_err(dev->net, "Error allocating URB in write_cmd_async!\n");
276 return;
277 }
278
279 req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
280 if (!req) {
281 netdev_err(dev->net, "Failed to allocate memory for control request\n");
282 usb_free_urb(urb);
283 return;
284 }
285
286 req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
287 req->bRequest = cmd;
288 req->wValue = cpu_to_le16(value);
289 req->wIndex = cpu_to_le16(index);
290 req->wLength = cpu_to_le16(size);
291
292 usb_fill_control_urb(urb, dev->udev,
293 usb_sndctrlpipe(dev->udev, 0),
294 (void *)req, data, size,
295 asix_async_cmd_callback, req);
296
297 status = usb_submit_urb(urb, GFP_ATOMIC);
298 if (status < 0) {
299 netdev_err(dev->net, "Error submitting the control message: status=%d\n",
300 status);
301 kfree(req);
302 usb_free_urb(urb);
303 }
304 }
305
306 static int asix_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
307 {
308 u8 *head;
309 u32 header;
310 char *packet;
311 struct sk_buff *ax_skb;
312 u16 size;
313
314 head = (u8 *) skb->data;
315 memcpy(&header, head, sizeof(header));
316 le32_to_cpus(&header);
317 packet = head + sizeof(header);
318
319 skb_pull(skb, 4);
320
321 while (skb->len > 0) {
322 if ((header & 0x07ff) != ((~header >> 16) & 0x07ff))
323 netdev_err(dev->net, "asix_rx_fixup() Bad Header Length\n");
324
325 /* get the packet length */
326 size = (u16) (header & 0x000007ff);
327
328 if ((skb->len) - ((size + 1) & 0xfffe) == 0) {
329 u8 alignment = (unsigned long)skb->data & 0x3;
330 if (alignment != 0x2) {
331 /*
332 * not 16bit aligned so use the room provided by
333 * the 32 bit header to align the data
334 *
335 * note we want 16bit alignment as MAC header is
336 * 14bytes thus ip header will be aligned on
337 * 32bit boundary so accessing ipheader elements
338 * using a cast to struct ip header wont cause
339 * an unaligned accesses.
340 */
341 u8 realignment = (alignment + 2) & 0x3;
342 memmove(skb->data - realignment,
343 skb->data,
344 size);
345 skb->data -= realignment;
346 skb_set_tail_pointer(skb, size);
347 }
348 return 2;
349 }
350
351 if (size > dev->net->mtu + ETH_HLEN) {
352 netdev_err(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
353 size);
354 return 0;
355 }
356 ax_skb = skb_clone(skb, GFP_ATOMIC);
357 if (ax_skb) {
358 u8 alignment = (unsigned long)packet & 0x3;
359 ax_skb->len = size;
360
361 if (alignment != 0x2) {
362 /*
363 * not 16bit aligned use the room provided by
364 * the 32 bit header to align the data
365 */
366 u8 realignment = (alignment + 2) & 0x3;
367 memmove(packet - realignment, packet, size);
368 packet -= realignment;
369 }
370 ax_skb->data = packet;
371 skb_set_tail_pointer(ax_skb, size);
372 usbnet_skb_return(dev, ax_skb);
373 } else {
374 return 0;
375 }
376
377 skb_pull(skb, (size + 1) & 0xfffe);
378
379 if (skb->len < sizeof(header))
380 break;
381
382 head = (u8 *) skb->data;
383 memcpy(&header, head, sizeof(header));
384 le32_to_cpus(&header);
385 packet = head + sizeof(header);
386 skb_pull(skb, 4);
387 }
388
389 if (skb->len < 0) {
390 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d\n",
391 skb->len);
392 return 0;
393 }
394 return 1;
395 }
396
397 static struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
398 gfp_t flags)
399 {
400 int padlen;
401 int headroom = skb_headroom(skb);
402 int tailroom = skb_tailroom(skb);
403 u32 packet_len;
404 u32 padbytes = 0xffff0000;
405
406 padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
407
408 if ((!skb_cloned(skb)) &&
409 ((headroom + tailroom) >= (4 + padlen))) {
410 if ((headroom < 4) || (tailroom < padlen)) {
411 skb->data = memmove(skb->head + 4, skb->data, skb->len);
412 skb_set_tail_pointer(skb, skb->len);
413 }
414 } else {
415 struct sk_buff *skb2;
416 skb2 = skb_copy_expand(skb, 4, padlen, flags);
417 dev_kfree_skb_any(skb);
418 skb = skb2;
419 if (!skb)
420 return NULL;
421 }
422
423 skb_push(skb, 4);
424 packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
425 cpu_to_le32s(&packet_len);
426 skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
427
428 if (padlen) {
429 cpu_to_le32s(&padbytes);
430 memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
431 skb_put(skb, sizeof(padbytes));
432 }
433 return skb;
434 }
435
436 static void asix_status(struct usbnet *dev, struct urb *urb)
437 {
438 struct ax88172_int_data *event;
439 int link;
440
441 if (urb->actual_length < 8)
442 return;
443
444 event = urb->transfer_buffer;
445 link = event->link & 0x01;
446 if (netif_carrier_ok(dev->net) != link) {
447 if (link) {
448 netif_carrier_on(dev->net);
449 usbnet_defer_kevent (dev, EVENT_LINK_RESET );
450 } else
451 netif_carrier_off(dev->net);
452 netdev_dbg(dev->net, "Link Status is: %d\n", link);
453 }
454 }
455
456 static inline int asix_set_sw_mii(struct usbnet *dev)
457 {
458 int ret;
459 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
460 if (ret < 0)
461 netdev_err(dev->net, "Failed to enable software MII access\n");
462 return ret;
463 }
464
465 static inline int asix_set_hw_mii(struct usbnet *dev)
466 {
467 int ret;
468 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
469 if (ret < 0)
470 netdev_err(dev->net, "Failed to enable hardware MII access\n");
471 return ret;
472 }
473
474 static inline int asix_get_phy_addr(struct usbnet *dev)
475 {
476 u8 buf[2];
477 int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf);
478
479 netdev_dbg(dev->net, "asix_get_phy_addr()\n");
480
481 if (ret < 0) {
482 netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
483 goto out;
484 }
485 netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
486 *((__le16 *)buf));
487 ret = buf[1];
488
489 out:
490 return ret;
491 }
492
493 static int asix_sw_reset(struct usbnet *dev, u8 flags)
494 {
495 int ret;
496
497 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL);
498 if (ret < 0)
499 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
500
501 return ret;
502 }
503
504 static u16 asix_read_rx_ctl(struct usbnet *dev)
505 {
506 __le16 v;
507 int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v);
508
509 if (ret < 0) {
510 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
511 goto out;
512 }
513 ret = le16_to_cpu(v);
514 out:
515 return ret;
516 }
517
518 static int asix_write_rx_ctl(struct usbnet *dev, u16 mode)
519 {
520 int ret;
521
522 netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
523 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
524 if (ret < 0)
525 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
526 mode, ret);
527
528 return ret;
529 }
530
531 static u16 asix_read_medium_status(struct usbnet *dev)
532 {
533 __le16 v;
534 int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v);
535
536 if (ret < 0) {
537 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
538 ret);
539 return ret; /* TODO: callers not checking for error ret */
540 }
541
542 return le16_to_cpu(v);
543
544 }
545
546 static int asix_write_medium_mode(struct usbnet *dev, u16 mode)
547 {
548 int ret;
549
550 netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
551 ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
552 if (ret < 0)
553 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
554 mode, ret);
555
556 return ret;
557 }
558
559 static int asix_write_gpio(struct usbnet *dev, u16 value, int sleep)
560 {
561 int ret;
562
563 netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
564 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL);
565 if (ret < 0)
566 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
567 value, ret);
568
569 if (sleep)
570 msleep(sleep);
571
572 return ret;
573 }
574
575 /*
576 * AX88772 & AX88178 have a 16-bit RX_CTL value
577 */
578 static void asix_set_multicast(struct net_device *net)
579 {
580 struct usbnet *dev = netdev_priv(net);
581 struct asix_data *data = (struct asix_data *)&dev->data;
582 u16 rx_ctl = AX_DEFAULT_RX_CTL;
583
584 if (net->flags & IFF_PROMISC) {
585 rx_ctl |= AX_RX_CTL_PRO;
586 } else if (net->flags & IFF_ALLMULTI ||
587 netdev_mc_count(net) > AX_MAX_MCAST) {
588 rx_ctl |= AX_RX_CTL_AMALL;
589 } else if (netdev_mc_empty(net)) {
590 /* just broadcast and directed */
591 } else {
592 /* We use the 20 byte dev->data
593 * for our 8 byte filter buffer
594 * to avoid allocating memory that
595 * is tricky to free later */
596 struct netdev_hw_addr *ha;
597 u32 crc_bits;
598
599 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
600
601 /* Build the multicast hash filter. */
602 netdev_for_each_mc_addr(ha, net) {
603 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
604 data->multi_filter[crc_bits >> 3] |=
605 1 << (crc_bits & 7);
606 }
607
608 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
609 AX_MCAST_FILTER_SIZE, data->multi_filter);
610
611 rx_ctl |= AX_RX_CTL_AM;
612 }
613
614 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
615 }
616
617 static int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
618 {
619 struct usbnet *dev = netdev_priv(netdev);
620 __le16 res;
621
622 mutex_lock(&dev->phy_mutex);
623 asix_set_sw_mii(dev);
624 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
625 (__u16)loc, 2, &res);
626 asix_set_hw_mii(dev);
627 mutex_unlock(&dev->phy_mutex);
628
629 netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
630 phy_id, loc, le16_to_cpu(res));
631
632 return le16_to_cpu(res);
633 }
634
635 static void
636 asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
637 {
638 struct usbnet *dev = netdev_priv(netdev);
639 __le16 res = cpu_to_le16(val);
640
641 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
642 phy_id, loc, val);
643 mutex_lock(&dev->phy_mutex);
644 asix_set_sw_mii(dev);
645 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);
646 asix_set_hw_mii(dev);
647 mutex_unlock(&dev->phy_mutex);
648 }
649
650 /* Get the PHY Identifier from the PHYSID1 & PHYSID2 MII registers */
651 static u32 asix_get_phyid(struct usbnet *dev)
652 {
653 int phy_reg;
654 u32 phy_id;
655 int i;
656
657 /* Poll for the rare case the FW or phy isn't ready yet. */
658 for (i = 0; i < 100; i++) {
659 phy_reg = asix_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID1);
660 if (phy_reg != 0 && phy_reg != 0xFFFF)
661 break;
662 mdelay(1);
663 }
664
665 if (phy_reg <= 0 || phy_reg == 0xFFFF)
666 return 0;
667
668 phy_id = (phy_reg & 0xffff) << 16;
669
670 phy_reg = asix_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID2);
671 if (phy_reg < 0)
672 return 0;
673
674 phy_id |= (phy_reg & 0xffff);
675
676 return phy_id;
677 }
678
679 static void
680 asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
681 {
682 struct usbnet *dev = netdev_priv(net);
683 u8 opt;
684
685 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
686 wolinfo->supported = 0;
687 wolinfo->wolopts = 0;
688 return;
689 }
690 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
691 wolinfo->wolopts = 0;
692 if (opt & AX_MONITOR_LINK)
693 wolinfo->wolopts |= WAKE_PHY;
694 if (opt & AX_MONITOR_MAGIC)
695 wolinfo->wolopts |= WAKE_MAGIC;
696 }
697
698 static int
699 asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
700 {
701 struct usbnet *dev = netdev_priv(net);
702 u8 opt = 0;
703
704 if (wolinfo->wolopts & WAKE_PHY)
705 opt |= AX_MONITOR_LINK;
706 if (wolinfo->wolopts & WAKE_MAGIC)
707 opt |= AX_MONITOR_MAGIC;
708
709 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
710 opt, 0, 0, NULL) < 0)
711 return -EINVAL;
712
713 return 0;
714 }
715
716 static int asix_get_eeprom_len(struct net_device *net)
717 {
718 struct usbnet *dev = netdev_priv(net);
719 struct asix_data *data = (struct asix_data *)&dev->data;
720
721 return data->eeprom_len;
722 }
723
724 static int asix_get_eeprom(struct net_device *net,
725 struct ethtool_eeprom *eeprom, u8 *data)
726 {
727 struct usbnet *dev = netdev_priv(net);
728 __le16 *ebuf = (__le16 *)data;
729 int i;
730
731 /* Crude hack to ensure that we don't overwrite memory
732 * if an odd length is supplied
733 */
734 if (eeprom->len % 2)
735 return -EINVAL;
736
737 eeprom->magic = AX_EEPROM_MAGIC;
738
739 /* ax8817x returns 2 bytes from eeprom on read */
740 for (i=0; i < eeprom->len / 2; i++) {
741 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM,
742 eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
743 return -EINVAL;
744 }
745 return 0;
746 }
747
748 static void asix_get_drvinfo (struct net_device *net,
749 struct ethtool_drvinfo *info)
750 {
751 struct usbnet *dev = netdev_priv(net);
752 struct asix_data *data = (struct asix_data *)&dev->data;
753
754 /* Inherit standard device info */
755 usbnet_get_drvinfo(net, info);
756 strncpy (info->driver, DRIVER_NAME, sizeof info->driver);
757 strncpy (info->version, DRIVER_VERSION, sizeof info->version);
758 info->eedump_len = data->eeprom_len;
759 }
760
761 static u32 asix_get_link(struct net_device *net)
762 {
763 struct usbnet *dev = netdev_priv(net);
764
765 return mii_link_ok(&dev->mii);
766 }
767
768 static int asix_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
769 {
770 struct usbnet *dev = netdev_priv(net);
771
772 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
773 }
774
775 static int asix_set_mac_address(struct net_device *net, void *p)
776 {
777 struct usbnet *dev = netdev_priv(net);
778 struct asix_data *data = (struct asix_data *)&dev->data;
779 struct sockaddr *addr = p;
780
781 if (netif_running(net))
782 return -EBUSY;
783 if (!is_valid_ether_addr(addr->sa_data))
784 return -EADDRNOTAVAIL;
785
786 memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
787
788 /* We use the 20 byte dev->data
789 * for our 6 byte mac buffer
790 * to avoid allocating memory that
791 * is tricky to free later */
792 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
793 asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
794 data->mac_addr);
795
796 return 0;
797 }
798
799 /* We need to override some ethtool_ops so we require our
800 own structure so we don't interfere with other usbnet
801 devices that may be connected at the same time. */
802 static const struct ethtool_ops ax88172_ethtool_ops = {
803 .get_drvinfo = asix_get_drvinfo,
804 .get_link = asix_get_link,
805 .get_msglevel = usbnet_get_msglevel,
806 .set_msglevel = usbnet_set_msglevel,
807 .get_wol = asix_get_wol,
808 .set_wol = asix_set_wol,
809 .get_eeprom_len = asix_get_eeprom_len,
810 .get_eeprom = asix_get_eeprom,
811 .get_settings = usbnet_get_settings,
812 .set_settings = usbnet_set_settings,
813 .nway_reset = usbnet_nway_reset,
814 };
815
816 static void ax88172_set_multicast(struct net_device *net)
817 {
818 struct usbnet *dev = netdev_priv(net);
819 struct asix_data *data = (struct asix_data *)&dev->data;
820 u8 rx_ctl = 0x8c;
821
822 if (net->flags & IFF_PROMISC) {
823 rx_ctl |= 0x01;
824 } else if (net->flags & IFF_ALLMULTI ||
825 netdev_mc_count(net) > AX_MAX_MCAST) {
826 rx_ctl |= 0x02;
827 } else if (netdev_mc_empty(net)) {
828 /* just broadcast and directed */
829 } else {
830 /* We use the 20 byte dev->data
831 * for our 8 byte filter buffer
832 * to avoid allocating memory that
833 * is tricky to free later */
834 struct netdev_hw_addr *ha;
835 u32 crc_bits;
836
837 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
838
839 /* Build the multicast hash filter. */
840 netdev_for_each_mc_addr(ha, net) {
841 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
842 data->multi_filter[crc_bits >> 3] |=
843 1 << (crc_bits & 7);
844 }
845
846 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
847 AX_MCAST_FILTER_SIZE, data->multi_filter);
848
849 rx_ctl |= 0x10;
850 }
851
852 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
853 }
854
855 static int ax88172_link_reset(struct usbnet *dev)
856 {
857 u8 mode;
858 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
859
860 mii_check_media(&dev->mii, 1, 1);
861 mii_ethtool_gset(&dev->mii, &ecmd);
862 mode = AX88172_MEDIUM_DEFAULT;
863
864 if (ecmd.duplex != DUPLEX_FULL)
865 mode |= ~AX88172_MEDIUM_FD;
866
867 netdev_dbg(dev->net, "ax88172_link_reset() speed: %u duplex: %d setting mode to 0x%04x\n",
868 ethtool_cmd_speed(&ecmd), ecmd.duplex, mode);
869
870 asix_write_medium_mode(dev, mode);
871
872 return 0;
873 }
874
875 static const struct net_device_ops ax88172_netdev_ops = {
876 .ndo_open = usbnet_open,
877 .ndo_stop = usbnet_stop,
878 .ndo_start_xmit = usbnet_start_xmit,
879 .ndo_tx_timeout = usbnet_tx_timeout,
880 .ndo_change_mtu = usbnet_change_mtu,
881 .ndo_set_mac_address = eth_mac_addr,
882 .ndo_validate_addr = eth_validate_addr,
883 .ndo_do_ioctl = asix_ioctl,
884 .ndo_set_rx_mode = ax88172_set_multicast,
885 };
886
887 static int ax88172_bind(struct usbnet *dev, struct usb_interface *intf)
888 {
889 int ret = 0;
890 u8 buf[ETH_ALEN];
891 int i;
892 unsigned long gpio_bits = dev->driver_info->data;
893 struct asix_data *data = (struct asix_data *)&dev->data;
894
895 data->eeprom_len = AX88172_EEPROM_LEN;
896
897 usbnet_get_endpoints(dev,intf);
898
899 /* Toggle the GPIOs in a manufacturer/model specific way */
900 for (i = 2; i >= 0; i--) {
901 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS,
902 (gpio_bits >> (i * 8)) & 0xff, 0, 0, NULL);
903 if (ret < 0)
904 goto out;
905 msleep(5);
906 }
907
908 ret = asix_write_rx_ctl(dev, 0x80);
909 if (ret < 0)
910 goto out;
911
912 /* Get the MAC address */
913 ret = asix_read_cmd(dev, AX88172_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf);
914 if (ret < 0) {
915 dbg("read AX_CMD_READ_NODE_ID failed: %d", ret);
916 goto out;
917 }
918 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
919
920 /* Initialize MII structure */
921 dev->mii.dev = dev->net;
922 dev->mii.mdio_read = asix_mdio_read;
923 dev->mii.mdio_write = asix_mdio_write;
924 dev->mii.phy_id_mask = 0x3f;
925 dev->mii.reg_num_mask = 0x1f;
926 dev->mii.phy_id = asix_get_phy_addr(dev);
927
928 dev->net->netdev_ops = &ax88172_netdev_ops;
929 dev->net->ethtool_ops = &ax88172_ethtool_ops;
930
931 asix_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
932 asix_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
933 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
934 mii_nway_restart(&dev->mii);
935
936 return 0;
937
938 out:
939 return ret;
940 }
941
942 static const struct ethtool_ops ax88772_ethtool_ops = {
943 .get_drvinfo = asix_get_drvinfo,
944 .get_link = asix_get_link,
945 .get_msglevel = usbnet_get_msglevel,
946 .set_msglevel = usbnet_set_msglevel,
947 .get_wol = asix_get_wol,
948 .set_wol = asix_set_wol,
949 .get_eeprom_len = asix_get_eeprom_len,
950 .get_eeprom = asix_get_eeprom,
951 .get_settings = usbnet_get_settings,
952 .set_settings = usbnet_set_settings,
953 .nway_reset = usbnet_nway_reset,
954 };
955
956 static int ax88772_link_reset(struct usbnet *dev)
957 {
958 u16 mode;
959 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
960
961 mii_check_media(&dev->mii, 1, 1);
962 mii_ethtool_gset(&dev->mii, &ecmd);
963 mode = AX88772_MEDIUM_DEFAULT;
964
965 if (ethtool_cmd_speed(&ecmd) != SPEED_100)
966 mode &= ~AX_MEDIUM_PS;
967
968 if (ecmd.duplex != DUPLEX_FULL)
969 mode &= ~AX_MEDIUM_FD;
970
971 netdev_dbg(dev->net, "ax88772_link_reset() speed: %u duplex: %d setting mode to 0x%04x\n",
972 ethtool_cmd_speed(&ecmd), ecmd.duplex, mode);
973
974 asix_write_medium_mode(dev, mode);
975
976 return 0;
977 }
978
979 static int ax88772_reset(struct usbnet *dev)
980 {
981 struct asix_data *data = (struct asix_data *)&dev->data;
982 int ret, embd_phy;
983 u16 rx_ctl;
984
985 ret = asix_write_gpio(dev,
986 AX_GPIO_RSE | AX_GPIO_GPO_2 | AX_GPIO_GPO2EN, 5);
987 if (ret < 0)
988 goto out;
989
990 embd_phy = ((asix_get_phy_addr(dev) & 0x1f) == 0x10 ? 1 : 0);
991
992 ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, embd_phy, 0, 0, NULL);
993 if (ret < 0) {
994 dbg("Select PHY #1 failed: %d", ret);
995 goto out;
996 }
997
998 ret = asix_sw_reset(dev, AX_SWRESET_IPPD | AX_SWRESET_PRL);
999 if (ret < 0)
1000 goto out;
1001
1002 msleep(150);
1003
1004 ret = asix_sw_reset(dev, AX_SWRESET_CLEAR);
1005 if (ret < 0)
1006 goto out;
1007
1008 msleep(150);
1009
1010 if (embd_phy) {
1011 ret = asix_sw_reset(dev, AX_SWRESET_IPRL);
1012 if (ret < 0)
1013 goto out;
1014 } else {
1015 ret = asix_sw_reset(dev, AX_SWRESET_PRTE);
1016 if (ret < 0)
1017 goto out;
1018 }
1019
1020 msleep(150);
1021 rx_ctl = asix_read_rx_ctl(dev);
1022 dbg("RX_CTL is 0x%04x after software reset", rx_ctl);
1023 ret = asix_write_rx_ctl(dev, 0x0000);
1024 if (ret < 0)
1025 goto out;
1026
1027 rx_ctl = asix_read_rx_ctl(dev);
1028 dbg("RX_CTL is 0x%04x setting to 0x0000", rx_ctl);
1029
1030 ret = asix_sw_reset(dev, AX_SWRESET_PRL);
1031 if (ret < 0)
1032 goto out;
1033
1034 msleep(150);
1035
1036 ret = asix_sw_reset(dev, AX_SWRESET_IPRL | AX_SWRESET_PRL);
1037 if (ret < 0)
1038 goto out;
1039
1040 msleep(150);
1041
1042 asix_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
1043 asix_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
1044 ADVERTISE_ALL | ADVERTISE_CSMA);
1045 mii_nway_restart(&dev->mii);
1046
1047 ret = asix_write_medium_mode(dev, AX88772_MEDIUM_DEFAULT);
1048 if (ret < 0)
1049 goto out;
1050
1051 ret = asix_write_cmd(dev, AX_CMD_WRITE_IPG0,
1052 AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
1053 AX88772_IPG2_DEFAULT, 0, NULL);
1054 if (ret < 0) {
1055 dbg("Write IPG,IPG1,IPG2 failed: %d", ret);
1056 goto out;
1057 }
1058
1059 /* Rewrite MAC address */
1060 memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);
1061 ret = asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
1062 data->mac_addr);
1063 if (ret < 0)
1064 goto out;
1065
1066 /* Set RX_CTL to default values with 2k buffer, and enable cactus */
1067 ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL);
1068 if (ret < 0)
1069 goto out;
1070
1071 rx_ctl = asix_read_rx_ctl(dev);
1072 dbg("RX_CTL is 0x%04x after all initializations", rx_ctl);
1073
1074 rx_ctl = asix_read_medium_status(dev);
1075 dbg("Medium Status is 0x%04x after all initializations", rx_ctl);
1076
1077 return 0;
1078
1079 out:
1080 return ret;
1081
1082 }
1083
1084 static const struct net_device_ops ax88772_netdev_ops = {
1085 .ndo_open = usbnet_open,
1086 .ndo_stop = usbnet_stop,
1087 .ndo_start_xmit = usbnet_start_xmit,
1088 .ndo_tx_timeout = usbnet_tx_timeout,
1089 .ndo_change_mtu = usbnet_change_mtu,
1090 .ndo_set_mac_address = asix_set_mac_address,
1091 .ndo_validate_addr = eth_validate_addr,
1092 .ndo_do_ioctl = asix_ioctl,
1093 .ndo_set_rx_mode = asix_set_multicast,
1094 };
1095
1096 static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
1097 {
1098 int ret, embd_phy;
1099 struct asix_data *data = (struct asix_data *)&dev->data;
1100 u8 buf[ETH_ALEN];
1101 u32 phyid;
1102
1103 data->eeprom_len = AX88772_EEPROM_LEN;
1104
1105 usbnet_get_endpoints(dev,intf);
1106
1107 /* Get the MAC address */
1108 ret = asix_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf);
1109 if (ret < 0) {
1110 dbg("Failed to read MAC address: %d", ret);
1111 return ret;
1112 }
1113 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
1114
1115 /* Initialize MII structure */
1116 dev->mii.dev = dev->net;
1117 dev->mii.mdio_read = asix_mdio_read;
1118 dev->mii.mdio_write = asix_mdio_write;
1119 dev->mii.phy_id_mask = 0x1f;
1120 dev->mii.reg_num_mask = 0x1f;
1121 dev->mii.phy_id = asix_get_phy_addr(dev);
1122
1123 dev->net->netdev_ops = &ax88772_netdev_ops;
1124 dev->net->ethtool_ops = &ax88772_ethtool_ops;
1125
1126 embd_phy = ((dev->mii.phy_id & 0x1f) == 0x10 ? 1 : 0);
1127
1128 /* Reset the PHY to normal operation mode */
1129 ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, embd_phy, 0, 0, NULL);
1130 if (ret < 0) {
1131 dbg("Select PHY #1 failed: %d", ret);
1132 return ret;
1133 }
1134
1135 ret = asix_sw_reset(dev, AX_SWRESET_IPPD | AX_SWRESET_PRL);
1136 if (ret < 0)
1137 return ret;
1138
1139 msleep(150);
1140
1141 ret = asix_sw_reset(dev, AX_SWRESET_CLEAR);
1142 if (ret < 0)
1143 return ret;
1144
1145 msleep(150);
1146
1147 ret = asix_sw_reset(dev, embd_phy ? AX_SWRESET_IPRL : AX_SWRESET_PRTE);
1148
1149 /* Read PHYID register *AFTER* the PHY was reset properly */
1150 phyid = asix_get_phyid(dev);
1151 dbg("PHYID=0x%08x", phyid);
1152
1153 /* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
1154 if (dev->driver_info->flags & FLAG_FRAMING_AX) {
1155 /* hard_mtu is still the default - the device does not support
1156 jumbo eth frames */
1157 dev->rx_urb_size = 2048;
1158 }
1159
1160 return 0;
1161 }
1162
1163 static const struct ethtool_ops ax88178_ethtool_ops = {
1164 .get_drvinfo = asix_get_drvinfo,
1165 .get_link = asix_get_link,
1166 .get_msglevel = usbnet_get_msglevel,
1167 .set_msglevel = usbnet_set_msglevel,
1168 .get_wol = asix_get_wol,
1169 .set_wol = asix_set_wol,
1170 .get_eeprom_len = asix_get_eeprom_len,
1171 .get_eeprom = asix_get_eeprom,
1172 .get_settings = usbnet_get_settings,
1173 .set_settings = usbnet_set_settings,
1174 .nway_reset = usbnet_nway_reset,
1175 };
1176
1177 static int marvell_phy_init(struct usbnet *dev)
1178 {
1179 struct asix_data *data = (struct asix_data *)&dev->data;
1180 u16 reg;
1181
1182 netdev_dbg(dev->net, "marvell_phy_init()\n");
1183
1184 reg = asix_mdio_read(dev->net, dev->mii.phy_id, MII_MARVELL_STATUS);
1185 netdev_dbg(dev->net, "MII_MARVELL_STATUS = 0x%04x\n", reg);
1186
1187 asix_mdio_write(dev->net, dev->mii.phy_id, MII_MARVELL_CTRL,
1188 MARVELL_CTRL_RXDELAY | MARVELL_CTRL_TXDELAY);
1189
1190 if (data->ledmode) {
1191 reg = asix_mdio_read(dev->net, dev->mii.phy_id,
1192 MII_MARVELL_LED_CTRL);
1193 netdev_dbg(dev->net, "MII_MARVELL_LED_CTRL (1) = 0x%04x\n", reg);
1194
1195 reg &= 0xf8ff;
1196 reg |= (1 + 0x0100);
1197 asix_mdio_write(dev->net, dev->mii.phy_id,
1198 MII_MARVELL_LED_CTRL, reg);
1199
1200 reg = asix_mdio_read(dev->net, dev->mii.phy_id,
1201 MII_MARVELL_LED_CTRL);
1202 netdev_dbg(dev->net, "MII_MARVELL_LED_CTRL (2) = 0x%04x\n", reg);
1203 reg &= 0xfc0f;
1204 }
1205
1206 return 0;
1207 }
1208
1209 static int rtl8211cl_phy_init(struct usbnet *dev)
1210 {
1211 struct asix_data *data = (struct asix_data *)&dev->data;
1212
1213 netdev_dbg(dev->net, "rtl8211cl_phy_init()\n");
1214
1215 asix_mdio_write (dev->net, dev->mii.phy_id, 0x1f, 0x0005);
1216 asix_mdio_write (dev->net, dev->mii.phy_id, 0x0c, 0);
1217 asix_mdio_write (dev->net, dev->mii.phy_id, 0x01,
1218 asix_mdio_read (dev->net, dev->mii.phy_id, 0x01) | 0x0080);
1219 asix_mdio_write (dev->net, dev->mii.phy_id, 0x1f, 0);
1220
1221 if (data->ledmode == 12) {
1222 asix_mdio_write (dev->net, dev->mii.phy_id, 0x1f, 0x0002);
1223 asix_mdio_write (dev->net, dev->mii.phy_id, 0x1a, 0x00cb);
1224 asix_mdio_write (dev->net, dev->mii.phy_id, 0x1f, 0);
1225 }
1226
1227 return 0;
1228 }
1229
1230 static int marvell_led_status(struct usbnet *dev, u16 speed)
1231 {
1232 u16 reg = asix_mdio_read(dev->net, dev->mii.phy_id, MARVELL_LED_MANUAL);
1233
1234 netdev_dbg(dev->net, "marvell_led_status() read 0x%04x\n", reg);
1235
1236 /* Clear out the center LED bits - 0x03F0 */
1237 reg &= 0xfc0f;
1238
1239 switch (speed) {
1240 case SPEED_1000:
1241 reg |= 0x03e0;
1242 break;
1243 case SPEED_100:
1244 reg |= 0x03b0;
1245 break;
1246 default:
1247 reg |= 0x02f0;
1248 }
1249
1250 netdev_dbg(dev->net, "marvell_led_status() writing 0x%04x\n", reg);
1251 asix_mdio_write(dev->net, dev->mii.phy_id, MARVELL_LED_MANUAL, reg);
1252
1253 return 0;
1254 }
1255
1256 static int ax88178_reset(struct usbnet *dev)
1257 {
1258 struct asix_data *data = (struct asix_data *)&dev->data;
1259 int ret;
1260 __le16 eeprom;
1261 u8 status;
1262 int gpio0 = 0;
1263 u32 phyid;
1264
1265 asix_read_cmd(dev, AX_CMD_READ_GPIOS, 0, 0, 1, &status);
1266 dbg("GPIO Status: 0x%04x", status);
1267
1268 asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0, 0, 0, NULL);
1269 asix_read_cmd(dev, AX_CMD_READ_EEPROM, 0x0017, 0, 2, &eeprom);
1270 asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0, 0, 0, NULL);
1271
1272 dbg("EEPROM index 0x17 is 0x%04x", eeprom);
1273
1274 if (eeprom == cpu_to_le16(0xffff)) {
1275 data->phymode = PHY_MODE_MARVELL;
1276 data->ledmode = 0;
1277 gpio0 = 1;
1278 } else {
1279 data->phymode = le16_to_cpu(eeprom) & 0x7F;
1280 data->ledmode = le16_to_cpu(eeprom) >> 8;
1281 gpio0 = (le16_to_cpu(eeprom) & 0x80) ? 0 : 1;
1282 }
1283 dbg("GPIO0: %d, PhyMode: %d", gpio0, data->phymode);
1284
1285 /* Power up external GigaPHY through AX88178 GPIO pin */
1286 asix_write_gpio(dev, AX_GPIO_RSE | AX_GPIO_GPO_1 | AX_GPIO_GPO1EN, 40);
1287 if ((le16_to_cpu(eeprom) >> 8) != 1) {
1288 asix_write_gpio(dev, 0x003c, 30);
1289 asix_write_gpio(dev, 0x001c, 300);
1290 asix_write_gpio(dev, 0x003c, 30);
1291 } else {
1292 dbg("gpio phymode == 1 path");
1293 asix_write_gpio(dev, AX_GPIO_GPO1EN, 30);
1294 asix_write_gpio(dev, AX_GPIO_GPO1EN | AX_GPIO_GPO_1, 30);
1295 }
1296
1297 /* Read PHYID register *AFTER* powering up PHY */
1298 phyid = asix_get_phyid(dev);
1299 dbg("PHYID=0x%08x", phyid);
1300
1301 /* Set AX88178 to enable MII/GMII/RGMII interface for external PHY */
1302 asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT, 0, 0, 0, NULL);
1303
1304 asix_sw_reset(dev, 0);
1305 msleep(150);
1306
1307 asix_sw_reset(dev, AX_SWRESET_PRL | AX_SWRESET_IPPD);
1308 msleep(150);
1309
1310 asix_write_rx_ctl(dev, 0);
1311
1312 if (data->phymode == PHY_MODE_MARVELL) {
1313 marvell_phy_init(dev);
1314 msleep(60);
1315 } else if (data->phymode == PHY_MODE_RTL8211CL)
1316 rtl8211cl_phy_init(dev);
1317
1318 asix_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR,
1319 BMCR_RESET | BMCR_ANENABLE);
1320 asix_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
1321 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
1322 asix_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000,
1323 ADVERTISE_1000FULL);
1324
1325 mii_nway_restart(&dev->mii);
1326
1327 ret = asix_write_medium_mode(dev, AX88178_MEDIUM_DEFAULT);
1328 if (ret < 0)
1329 return ret;
1330
1331 /* Rewrite MAC address */
1332 memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);
1333 ret = asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
1334 data->mac_addr);
1335 if (ret < 0)
1336 return ret;
1337
1338 ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL);
1339 if (ret < 0)
1340 return ret;
1341
1342 return 0;
1343 }
1344
1345 static int ax88178_link_reset(struct usbnet *dev)
1346 {
1347 u16 mode;
1348 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
1349 struct asix_data *data = (struct asix_data *)&dev->data;
1350 u32 speed;
1351
1352 netdev_dbg(dev->net, "ax88178_link_reset()\n");
1353
1354 mii_check_media(&dev->mii, 1, 1);
1355 mii_ethtool_gset(&dev->mii, &ecmd);
1356 mode = AX88178_MEDIUM_DEFAULT;
1357 speed = ethtool_cmd_speed(&ecmd);
1358
1359 if (speed == SPEED_1000)
1360 mode |= AX_MEDIUM_GM;
1361 else if (speed == SPEED_100)
1362 mode |= AX_MEDIUM_PS;
1363 else
1364 mode &= ~(AX_MEDIUM_PS | AX_MEDIUM_GM);
1365
1366 mode |= AX_MEDIUM_ENCK;
1367
1368 if (ecmd.duplex == DUPLEX_FULL)
1369 mode |= AX_MEDIUM_FD;
1370 else
1371 mode &= ~AX_MEDIUM_FD;
1372
1373 netdev_dbg(dev->net, "ax88178_link_reset() speed: %u duplex: %d setting mode to 0x%04x\n",
1374 speed, ecmd.duplex, mode);
1375
1376 asix_write_medium_mode(dev, mode);
1377
1378 if (data->phymode == PHY_MODE_MARVELL && data->ledmode)
1379 marvell_led_status(dev, speed);
1380
1381 return 0;
1382 }
1383
1384 static void ax88178_set_mfb(struct usbnet *dev)
1385 {
1386 u16 mfb = AX_RX_CTL_MFB_16384;
1387 u16 rxctl;
1388 u16 medium;
1389 int old_rx_urb_size = dev->rx_urb_size;
1390
1391 if (dev->hard_mtu < 2048) {
1392 dev->rx_urb_size = 2048;
1393 mfb = AX_RX_CTL_MFB_2048;
1394 } else if (dev->hard_mtu < 4096) {
1395 dev->rx_urb_size = 4096;
1396 mfb = AX_RX_CTL_MFB_4096;
1397 } else if (dev->hard_mtu < 8192) {
1398 dev->rx_urb_size = 8192;
1399 mfb = AX_RX_CTL_MFB_8192;
1400 } else if (dev->hard_mtu < 16384) {
1401 dev->rx_urb_size = 16384;
1402 mfb = AX_RX_CTL_MFB_16384;
1403 }
1404
1405 rxctl = asix_read_rx_ctl(dev);
1406 asix_write_rx_ctl(dev, (rxctl & ~AX_RX_CTL_MFB_16384) | mfb);
1407
1408 medium = asix_read_medium_status(dev);
1409 if (dev->net->mtu > 1500)
1410 medium |= AX_MEDIUM_JFE;
1411 else
1412 medium &= ~AX_MEDIUM_JFE;
1413 asix_write_medium_mode(dev, medium);
1414
1415 if (dev->rx_urb_size > old_rx_urb_size)
1416 usbnet_unlink_rx_urbs(dev);
1417 }
1418
1419 static int ax88178_change_mtu(struct net_device *net, int new_mtu)
1420 {
1421 struct usbnet *dev = netdev_priv(net);
1422 int ll_mtu = new_mtu + net->hard_header_len + 4;
1423
1424 netdev_dbg(dev->net, "ax88178_change_mtu() new_mtu=%d\n", new_mtu);
1425
1426 if (new_mtu <= 0 || ll_mtu > 16384)
1427 return -EINVAL;
1428
1429 if ((ll_mtu % dev->maxpacket) == 0)
1430 return -EDOM;
1431
1432 net->mtu = new_mtu;
1433 dev->hard_mtu = net->mtu + net->hard_header_len;
1434 ax88178_set_mfb(dev);
1435
1436 return 0;
1437 }
1438
1439 static const struct net_device_ops ax88178_netdev_ops = {
1440 .ndo_open = usbnet_open,
1441 .ndo_stop = usbnet_stop,
1442 .ndo_start_xmit = usbnet_start_xmit,
1443 .ndo_tx_timeout = usbnet_tx_timeout,
1444 .ndo_set_mac_address = asix_set_mac_address,
1445 .ndo_validate_addr = eth_validate_addr,
1446 .ndo_set_rx_mode = asix_set_multicast,
1447 .ndo_do_ioctl = asix_ioctl,
1448 .ndo_change_mtu = ax88178_change_mtu,
1449 };
1450
1451 static int ax88178_bind(struct usbnet *dev, struct usb_interface *intf)
1452 {
1453 int ret;
1454 u8 buf[ETH_ALEN];
1455 struct asix_data *data = (struct asix_data *)&dev->data;
1456
1457 data->eeprom_len = AX88772_EEPROM_LEN;
1458
1459 usbnet_get_endpoints(dev,intf);
1460
1461 /* Get the MAC address */
1462 ret = asix_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf);
1463 if (ret < 0) {
1464 dbg("Failed to read MAC address: %d", ret);
1465 return ret;
1466 }
1467 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
1468
1469 /* Initialize MII structure */
1470 dev->mii.dev = dev->net;
1471 dev->mii.mdio_read = asix_mdio_read;
1472 dev->mii.mdio_write = asix_mdio_write;
1473 dev->mii.phy_id_mask = 0x1f;
1474 dev->mii.reg_num_mask = 0xff;
1475 dev->mii.supports_gmii = 1;
1476 dev->mii.phy_id = asix_get_phy_addr(dev);
1477
1478 dev->net->netdev_ops = &ax88178_netdev_ops;
1479 dev->net->ethtool_ops = &ax88178_ethtool_ops;
1480
1481 /* Blink LEDS so users know driver saw dongle */
1482 asix_sw_reset(dev, 0);
1483 msleep(150);
1484
1485 asix_sw_reset(dev, AX_SWRESET_PRL | AX_SWRESET_IPPD);
1486 msleep(150);
1487
1488 /* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
1489 if (dev->driver_info->flags & FLAG_FRAMING_AX) {
1490 /* hard_mtu is still the default - the device does not support
1491 jumbo eth frames */
1492 dev->rx_urb_size = 2048;
1493 }
1494
1495 return 0;
1496 }
1497
1498 static const struct driver_info ax8817x_info = {
1499 .description = "ASIX AX8817x USB 2.0 Ethernet",
1500 .bind = ax88172_bind,
1501 .status = asix_status,
1502 .link_reset = ax88172_link_reset,
1503 .reset = ax88172_link_reset,
1504 .flags = FLAG_ETHER | FLAG_LINK_INTR,
1505 .data = 0x00130103,
1506 };
1507
1508 static const struct driver_info dlink_dub_e100_info = {
1509 .description = "DLink DUB-E100 USB Ethernet",
1510 .bind = ax88172_bind,
1511 .status = asix_status,
1512 .link_reset = ax88172_link_reset,
1513 .reset = ax88172_link_reset,
1514 .flags = FLAG_ETHER | FLAG_LINK_INTR,
1515 .data = 0x009f9d9f,
1516 };
1517
1518 static const struct driver_info netgear_fa120_info = {
1519 .description = "Netgear FA-120 USB Ethernet",
1520 .bind = ax88172_bind,
1521 .status = asix_status,
1522 .link_reset = ax88172_link_reset,
1523 .reset = ax88172_link_reset,
1524 .flags = FLAG_ETHER | FLAG_LINK_INTR,
1525 .data = 0x00130103,
1526 };
1527
1528 static const struct driver_info hawking_uf200_info = {
1529 .description = "Hawking UF200 USB Ethernet",
1530 .bind = ax88172_bind,
1531 .status = asix_status,
1532 .link_reset = ax88172_link_reset,
1533 .reset = ax88172_link_reset,
1534 .flags = FLAG_ETHER | FLAG_LINK_INTR,
1535 .data = 0x001f1d1f,
1536 };
1537
1538 static const struct driver_info ax88772_info = {
1539 .description = "ASIX AX88772 USB 2.0 Ethernet",
1540 .bind = ax88772_bind,
1541 .status = asix_status,
1542 .link_reset = ax88772_link_reset,
1543 .reset = ax88772_reset,
1544 .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR,
1545 .rx_fixup = asix_rx_fixup,
1546 .tx_fixup = asix_tx_fixup,
1547 };
1548
1549 static const struct driver_info ax88178_info = {
1550 .description = "ASIX AX88178 USB 2.0 Ethernet",
1551 .bind = ax88178_bind,
1552 .status = asix_status,
1553 .link_reset = ax88178_link_reset,
1554 .reset = ax88178_reset,
1555 .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR,
1556 .rx_fixup = asix_rx_fixup,
1557 .tx_fixup = asix_tx_fixup,
1558 };
1559
1560 static const struct usb_device_id products [] = {
1561 {
1562 // Linksys USB200M
1563 USB_DEVICE (0x077b, 0x2226),
1564 .driver_info = (unsigned long) &ax8817x_info,
1565 }, {
1566 // Netgear FA120
1567 USB_DEVICE (0x0846, 0x1040),
1568 .driver_info = (unsigned long) &netgear_fa120_info,
1569 }, {
1570 // DLink DUB-E100
1571 USB_DEVICE (0x2001, 0x1a00),
1572 .driver_info = (unsigned long) &dlink_dub_e100_info,
1573 }, {
1574 // Intellinet, ST Lab USB Ethernet
1575 USB_DEVICE (0x0b95, 0x1720),
1576 .driver_info = (unsigned long) &ax8817x_info,
1577 }, {
1578 // Hawking UF200, TrendNet TU2-ET100
1579 USB_DEVICE (0x07b8, 0x420a),
1580 .driver_info = (unsigned long) &hawking_uf200_info,
1581 }, {
1582 // Billionton Systems, USB2AR
1583 USB_DEVICE (0x08dd, 0x90ff),
1584 .driver_info = (unsigned long) &ax8817x_info,
1585 }, {
1586 // ATEN UC210T
1587 USB_DEVICE (0x0557, 0x2009),
1588 .driver_info = (unsigned long) &ax8817x_info,
1589 }, {
1590 // Buffalo LUA-U2-KTX
1591 USB_DEVICE (0x0411, 0x003d),
1592 .driver_info = (unsigned long) &ax8817x_info,
1593 }, {
1594 // Buffalo LUA-U2-GT 10/100/1000
1595 USB_DEVICE (0x0411, 0x006e),
1596 .driver_info = (unsigned long) &ax88178_info,
1597 }, {
1598 // Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
1599 USB_DEVICE (0x6189, 0x182d),
1600 .driver_info = (unsigned long) &ax8817x_info,
1601 }, {
1602 // Sitecom LN-031 "USB 2.0 10/100/1000 Ethernet adapter"
1603 USB_DEVICE (0x0df6, 0x0056),
1604 .driver_info = (unsigned long) &ax88178_info,
1605 }, {
1606 // corega FEther USB2-TX
1607 USB_DEVICE (0x07aa, 0x0017),
1608 .driver_info = (unsigned long) &ax8817x_info,
1609 }, {
1610 // Surecom EP-1427X-2
1611 USB_DEVICE (0x1189, 0x0893),
1612 .driver_info = (unsigned long) &ax8817x_info,
1613 }, {
1614 // goodway corp usb gwusb2e
1615 USB_DEVICE (0x1631, 0x6200),
1616 .driver_info = (unsigned long) &ax8817x_info,
1617 }, {
1618 // JVC MP-PRX1 Port Replicator
1619 USB_DEVICE (0x04f1, 0x3008),
1620 .driver_info = (unsigned long) &ax8817x_info,
1621 }, {
1622 // ASIX AX88772B 10/100
1623 USB_DEVICE (0x0b95, 0x772b),
1624 .driver_info = (unsigned long) &ax88772_info,
1625 }, {
1626 // ASIX AX88772 10/100
1627 USB_DEVICE (0x0b95, 0x7720),
1628 .driver_info = (unsigned long) &ax88772_info,
1629 }, {
1630 // ASIX AX88178 10/100/1000
1631 USB_DEVICE (0x0b95, 0x1780),
1632 .driver_info = (unsigned long) &ax88178_info,
1633 }, {
1634 // Logitec LAN-GTJ/U2A
1635 USB_DEVICE (0x0789, 0x0160),
1636 .driver_info = (unsigned long) &ax88178_info,
1637 }, {
1638 // Linksys USB200M Rev 2
1639 USB_DEVICE (0x13b1, 0x0018),
1640 .driver_info = (unsigned long) &ax88772_info,
1641 }, {
1642 // 0Q0 cable ethernet
1643 USB_DEVICE (0x1557, 0x7720),
1644 .driver_info = (unsigned long) &ax88772_info,
1645 }, {
1646 // DLink DUB-E100 H/W Ver B1
1647 USB_DEVICE (0x07d1, 0x3c05),
1648 .driver_info = (unsigned long) &ax88772_info,
1649 }, {
1650 // DLink DUB-E100 H/W Ver B1 Alternate
1651 USB_DEVICE (0x2001, 0x3c05),
1652 .driver_info = (unsigned long) &ax88772_info,
1653 }, {
1654 // Linksys USB1000
1655 USB_DEVICE (0x1737, 0x0039),
1656 .driver_info = (unsigned long) &ax88178_info,
1657 }, {
1658 // IO-DATA ETG-US2
1659 USB_DEVICE (0x04bb, 0x0930),
1660 .driver_info = (unsigned long) &ax88178_info,
1661 }, {
1662 // Belkin F5D5055
1663 USB_DEVICE(0x050d, 0x5055),
1664 .driver_info = (unsigned long) &ax88178_info,
1665 }, {
1666 // Apple USB Ethernet Adapter
1667 USB_DEVICE(0x05ac, 0x1402),
1668 .driver_info = (unsigned long) &ax88772_info,
1669 }, {
1670 // Cables-to-Go USB Ethernet Adapter
1671 USB_DEVICE(0x0b95, 0x772a),
1672 .driver_info = (unsigned long) &ax88772_info,
1673 }, {
1674 // ABOCOM for pci
1675 USB_DEVICE(0x14ea, 0xab11),
1676 .driver_info = (unsigned long) &ax88178_info,
1677 }, {
1678 // ASIX 88772a
1679 USB_DEVICE(0x0db0, 0xa877),
1680 .driver_info = (unsigned long) &ax88772_info,
1681 }, {
1682 // Asus USB Ethernet Adapter
1683 USB_DEVICE (0x0b95, 0x7e2b),
1684 .driver_info = (unsigned long) &ax88772_info,
1685 },
1686 { }, // END
1687 };
1688 MODULE_DEVICE_TABLE(usb, products);
1689
1690 static struct usb_driver asix_driver = {
1691 .name = DRIVER_NAME,
1692 .id_table = products,
1693 .probe = usbnet_probe,
1694 .suspend = usbnet_suspend,
1695 .resume = usbnet_resume,
1696 .disconnect = usbnet_disconnect,
1697 .supports_autosuspend = 1,
1698 };
1699
1700 module_usb_driver(asix_driver);
1701
1702 MODULE_AUTHOR("David Hollis");
1703 MODULE_VERSION(DRIVER_VERSION);
1704 MODULE_DESCRIPTION("ASIX AX8817X based USB 2.0 Ethernet Devices");
1705 MODULE_LICENSE("GPL");
1706