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[PATCH] Fix documentation of driver suspend/resume callbacks
[deliverable/linux.git] / drivers / usb / net / asix.c
1 /*
2 * ASIX AX8817X based USB 2.0 Ethernet Devices
3 * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
4 * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
5 * Copyright (c) 2002-2003 TiVo Inc.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22 // #define DEBUG // error path messages, extra info
23 // #define VERBOSE // more; success messages
24
25 #include <linux/config.h>
26 #ifdef CONFIG_USB_DEBUG
27 # define DEBUG
28 #endif
29 #include <linux/module.h>
30 #include <linux/kmod.h>
31 #include <linux/sched.h>
32 #include <linux/init.h>
33 #include <linux/netdevice.h>
34 #include <linux/etherdevice.h>
35 #include <linux/ethtool.h>
36 #include <linux/workqueue.h>
37 #include <linux/mii.h>
38 #include <linux/usb.h>
39 #include <linux/crc32.h>
40
41 #include "usbnet.h"
42
43
44 /* ASIX AX8817X based USB 2.0 Ethernet Devices */
45
46 #define AX_CMD_SET_SW_MII 0x06
47 #define AX_CMD_READ_MII_REG 0x07
48 #define AX_CMD_WRITE_MII_REG 0x08
49 #define AX_CMD_SET_HW_MII 0x0a
50 #define AX_CMD_READ_EEPROM 0x0b
51 #define AX_CMD_WRITE_EEPROM 0x0c
52 #define AX_CMD_WRITE_ENABLE 0x0d
53 #define AX_CMD_WRITE_DISABLE 0x0e
54 #define AX_CMD_WRITE_RX_CTL 0x10
55 #define AX_CMD_READ_IPG012 0x11
56 #define AX_CMD_WRITE_IPG0 0x12
57 #define AX_CMD_WRITE_IPG1 0x13
58 #define AX_CMD_WRITE_IPG2 0x14
59 #define AX_CMD_WRITE_MULTI_FILTER 0x16
60 #define AX_CMD_READ_NODE_ID 0x17
61 #define AX_CMD_READ_PHY_ID 0x19
62 #define AX_CMD_READ_MEDIUM_STATUS 0x1a
63 #define AX_CMD_WRITE_MEDIUM_MODE 0x1b
64 #define AX_CMD_READ_MONITOR_MODE 0x1c
65 #define AX_CMD_WRITE_MONITOR_MODE 0x1d
66 #define AX_CMD_WRITE_GPIOS 0x1f
67 #define AX_CMD_SW_RESET 0x20
68 #define AX_CMD_SW_PHY_STATUS 0x21
69 #define AX_CMD_SW_PHY_SELECT 0x22
70 #define AX88772_CMD_READ_NODE_ID 0x13
71
72 #define AX_MONITOR_MODE 0x01
73 #define AX_MONITOR_LINK 0x02
74 #define AX_MONITOR_MAGIC 0x04
75 #define AX_MONITOR_HSFS 0x10
76
77 /* AX88172 Medium Status Register values */
78 #define AX_MEDIUM_FULL_DUPLEX 0x02
79 #define AX_MEDIUM_TX_ABORT_ALLOW 0x04
80 #define AX_MEDIUM_FLOW_CONTROL_EN 0x10
81
82 #define AX_MCAST_FILTER_SIZE 8
83 #define AX_MAX_MCAST 64
84
85 #define AX_EEPROM_LEN 0x40
86
87 #define AX_SWRESET_CLEAR 0x00
88 #define AX_SWRESET_RR 0x01
89 #define AX_SWRESET_RT 0x02
90 #define AX_SWRESET_PRTE 0x04
91 #define AX_SWRESET_PRL 0x08
92 #define AX_SWRESET_BZ 0x10
93 #define AX_SWRESET_IPRL 0x20
94 #define AX_SWRESET_IPPD 0x40
95
96 #define AX88772_IPG0_DEFAULT 0x15
97 #define AX88772_IPG1_DEFAULT 0x0c
98 #define AX88772_IPG2_DEFAULT 0x12
99
100 #define AX88772_MEDIUM_FULL_DUPLEX 0x0002
101 #define AX88772_MEDIUM_RESERVED 0x0004
102 #define AX88772_MEDIUM_RX_FC_ENABLE 0x0010
103 #define AX88772_MEDIUM_TX_FC_ENABLE 0x0020
104 #define AX88772_MEDIUM_PAUSE_FORMAT 0x0080
105 #define AX88772_MEDIUM_RX_ENABLE 0x0100
106 #define AX88772_MEDIUM_100MB 0x0200
107 #define AX88772_MEDIUM_DEFAULT \
108 (AX88772_MEDIUM_FULL_DUPLEX | AX88772_MEDIUM_RX_FC_ENABLE | \
109 AX88772_MEDIUM_TX_FC_ENABLE | AX88772_MEDIUM_100MB | \
110 AX88772_MEDIUM_RESERVED | AX88772_MEDIUM_RX_ENABLE )
111
112 #define AX_EEPROM_MAGIC 0xdeadbeef
113
114 /* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
115 struct ax8817x_data {
116 u8 multi_filter[AX_MCAST_FILTER_SIZE];
117 };
118
119 struct ax88172_int_data {
120 u16 res1;
121 u8 link;
122 u16 res2;
123 u8 status;
124 u16 res3;
125 } __attribute__ ((packed));
126
127 static int ax8817x_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
128 u16 size, void *data)
129 {
130 return usb_control_msg(
131 dev->udev,
132 usb_rcvctrlpipe(dev->udev, 0),
133 cmd,
134 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
135 value,
136 index,
137 data,
138 size,
139 USB_CTRL_GET_TIMEOUT);
140 }
141
142 static int ax8817x_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
143 u16 size, void *data)
144 {
145 return usb_control_msg(
146 dev->udev,
147 usb_sndctrlpipe(dev->udev, 0),
148 cmd,
149 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
150 value,
151 index,
152 data,
153 size,
154 USB_CTRL_SET_TIMEOUT);
155 }
156
157 static void ax8817x_async_cmd_callback(struct urb *urb, struct pt_regs *regs)
158 {
159 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
160
161 if (urb->status < 0)
162 printk(KERN_DEBUG "ax8817x_async_cmd_callback() failed with %d",
163 urb->status);
164
165 kfree(req);
166 usb_free_urb(urb);
167 }
168
169 static void ax8817x_status(struct usbnet *dev, struct urb *urb)
170 {
171 struct ax88172_int_data *event;
172 int link;
173
174 if (urb->actual_length < 8)
175 return;
176
177 event = urb->transfer_buffer;
178 link = event->link & 0x01;
179 if (netif_carrier_ok(dev->net) != link) {
180 if (link) {
181 netif_carrier_on(dev->net);
182 usbnet_defer_kevent (dev, EVENT_LINK_RESET );
183 } else
184 netif_carrier_off(dev->net);
185 devdbg(dev, "ax8817x - Link Status is: %d", link);
186 }
187 }
188
189 static void
190 ax8817x_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
191 u16 size, void *data)
192 {
193 struct usb_ctrlrequest *req;
194 int status;
195 struct urb *urb;
196
197 if ((urb = usb_alloc_urb(0, GFP_ATOMIC)) == NULL) {
198 devdbg(dev, "Error allocating URB in write_cmd_async!");
199 return;
200 }
201
202 if ((req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC)) == NULL) {
203 deverr(dev, "Failed to allocate memory for control request");
204 usb_free_urb(urb);
205 return;
206 }
207
208 req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
209 req->bRequest = cmd;
210 req->wValue = cpu_to_le16(value);
211 req->wIndex = cpu_to_le16(index);
212 req->wLength = cpu_to_le16(size);
213
214 usb_fill_control_urb(urb, dev->udev,
215 usb_sndctrlpipe(dev->udev, 0),
216 (void *)req, data, size,
217 ax8817x_async_cmd_callback, req);
218
219 if((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
220 deverr(dev, "Error submitting the control message: status=%d",
221 status);
222 kfree(req);
223 usb_free_urb(urb);
224 }
225 }
226
227 static void ax8817x_set_multicast(struct net_device *net)
228 {
229 struct usbnet *dev = netdev_priv(net);
230 struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
231 u8 rx_ctl = 0x8c;
232
233 if (net->flags & IFF_PROMISC) {
234 rx_ctl |= 0x01;
235 } else if (net->flags & IFF_ALLMULTI
236 || net->mc_count > AX_MAX_MCAST) {
237 rx_ctl |= 0x02;
238 } else if (net->mc_count == 0) {
239 /* just broadcast and directed */
240 } else {
241 /* We use the 20 byte dev->data
242 * for our 8 byte filter buffer
243 * to avoid allocating memory that
244 * is tricky to free later */
245 struct dev_mc_list *mc_list = net->mc_list;
246 u32 crc_bits;
247 int i;
248
249 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
250
251 /* Build the multicast hash filter. */
252 for (i = 0; i < net->mc_count; i++) {
253 crc_bits =
254 ether_crc(ETH_ALEN,
255 mc_list->dmi_addr) >> 26;
256 data->multi_filter[crc_bits >> 3] |=
257 1 << (crc_bits & 7);
258 mc_list = mc_list->next;
259 }
260
261 ax8817x_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
262 AX_MCAST_FILTER_SIZE, data->multi_filter);
263
264 rx_ctl |= 0x10;
265 }
266
267 ax8817x_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
268 }
269
270 static int ax8817x_mdio_read(struct net_device *netdev, int phy_id, int loc)
271 {
272 struct usbnet *dev = netdev_priv(netdev);
273 u16 res;
274 u8 buf[1];
275
276 ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
277 ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
278 (__u16)loc, 2, (u16 *)&res);
279 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
280
281 return res & 0xffff;
282 }
283
284 /* same as above, but converts resulting value to cpu byte order */
285 static int ax8817x_mdio_read_le(struct net_device *netdev, int phy_id, int loc)
286 {
287 return le16_to_cpu(ax8817x_mdio_read(netdev,phy_id, loc));
288 }
289
290 static void
291 ax8817x_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
292 {
293 struct usbnet *dev = netdev_priv(netdev);
294 u16 res = val;
295 u8 buf[1];
296
297 ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
298 ax8817x_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
299 (__u16)loc, 2, (u16 *)&res);
300 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
301 }
302
303 /* same as above, but converts new value to le16 byte order before writing */
304 static void
305 ax8817x_mdio_write_le(struct net_device *netdev, int phy_id, int loc, int val)
306 {
307 ax8817x_mdio_write( netdev, phy_id, loc, cpu_to_le16(val) );
308 }
309
310 static int ax88172_link_reset(struct usbnet *dev)
311 {
312 u16 lpa;
313 u16 adv;
314 u16 res;
315 u8 mode;
316
317 mode = AX_MEDIUM_TX_ABORT_ALLOW | AX_MEDIUM_FLOW_CONTROL_EN;
318 lpa = ax8817x_mdio_read_le(dev->net, dev->mii.phy_id, MII_LPA);
319 adv = ax8817x_mdio_read_le(dev->net, dev->mii.phy_id, MII_ADVERTISE);
320 res = mii_nway_result(lpa|adv);
321 if (res & LPA_DUPLEX)
322 mode |= AX_MEDIUM_FULL_DUPLEX;
323 ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
324
325 return 0;
326 }
327
328 static void
329 ax8817x_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
330 {
331 struct usbnet *dev = netdev_priv(net);
332 u8 opt;
333
334 if (ax8817x_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
335 wolinfo->supported = 0;
336 wolinfo->wolopts = 0;
337 return;
338 }
339 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
340 wolinfo->wolopts = 0;
341 if (opt & AX_MONITOR_MODE) {
342 if (opt & AX_MONITOR_LINK)
343 wolinfo->wolopts |= WAKE_PHY;
344 if (opt & AX_MONITOR_MAGIC)
345 wolinfo->wolopts |= WAKE_MAGIC;
346 }
347 }
348
349 static int
350 ax8817x_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
351 {
352 struct usbnet *dev = netdev_priv(net);
353 u8 opt = 0;
354 u8 buf[1];
355
356 if (wolinfo->wolopts & WAKE_PHY)
357 opt |= AX_MONITOR_LINK;
358 if (wolinfo->wolopts & WAKE_MAGIC)
359 opt |= AX_MONITOR_MAGIC;
360 if (opt != 0)
361 opt |= AX_MONITOR_MODE;
362
363 if (ax8817x_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
364 opt, 0, 0, &buf) < 0)
365 return -EINVAL;
366
367 return 0;
368 }
369
370 static int ax8817x_get_eeprom_len(struct net_device *net)
371 {
372 return AX_EEPROM_LEN;
373 }
374
375 static int ax8817x_get_eeprom(struct net_device *net,
376 struct ethtool_eeprom *eeprom, u8 *data)
377 {
378 struct usbnet *dev = netdev_priv(net);
379 u16 *ebuf = (u16 *)data;
380 int i;
381
382 /* Crude hack to ensure that we don't overwrite memory
383 * if an odd length is supplied
384 */
385 if (eeprom->len % 2)
386 return -EINVAL;
387
388 eeprom->magic = AX_EEPROM_MAGIC;
389
390 /* ax8817x returns 2 bytes from eeprom on read */
391 for (i=0; i < eeprom->len / 2; i++) {
392 if (ax8817x_read_cmd(dev, AX_CMD_READ_EEPROM,
393 eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
394 return -EINVAL;
395 }
396 return 0;
397 }
398
399 static void ax8817x_get_drvinfo (struct net_device *net,
400 struct ethtool_drvinfo *info)
401 {
402 /* Inherit standard device info */
403 usbnet_get_drvinfo(net, info);
404 info->eedump_len = 0x3e;
405 }
406
407 static int ax8817x_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
408 {
409 struct usbnet *dev = netdev_priv(net);
410
411 return mii_ethtool_gset(&dev->mii,cmd);
412 }
413
414 static int ax8817x_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
415 {
416 struct usbnet *dev = netdev_priv(net);
417
418 return mii_ethtool_sset(&dev->mii,cmd);
419 }
420
421 /* We need to override some ethtool_ops so we require our
422 own structure so we don't interfere with other usbnet
423 devices that may be connected at the same time. */
424 static struct ethtool_ops ax8817x_ethtool_ops = {
425 .get_drvinfo = ax8817x_get_drvinfo,
426 .get_link = ethtool_op_get_link,
427 .get_msglevel = usbnet_get_msglevel,
428 .set_msglevel = usbnet_set_msglevel,
429 .get_wol = ax8817x_get_wol,
430 .set_wol = ax8817x_set_wol,
431 .get_eeprom_len = ax8817x_get_eeprom_len,
432 .get_eeprom = ax8817x_get_eeprom,
433 .get_settings = ax8817x_get_settings,
434 .set_settings = ax8817x_set_settings,
435 };
436
437 static int ax8817x_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
438 {
439 struct usbnet *dev = netdev_priv(net);
440
441 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
442 }
443
444 static int ax8817x_bind(struct usbnet *dev, struct usb_interface *intf)
445 {
446 int ret = 0;
447 void *buf;
448 int i;
449 unsigned long gpio_bits = dev->driver_info->data;
450
451 usbnet_get_endpoints(dev,intf);
452
453 buf = kmalloc(ETH_ALEN, GFP_KERNEL);
454 if(!buf) {
455 ret = -ENOMEM;
456 goto out1;
457 }
458
459 /* Toggle the GPIOs in a manufacturer/model specific way */
460 for (i = 2; i >= 0; i--) {
461 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
462 (gpio_bits >> (i * 8)) & 0xff, 0, 0,
463 buf)) < 0)
464 goto out2;
465 msleep(5);
466 }
467
468 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL,
469 0x80, 0, 0, buf)) < 0) {
470 dbg("send AX_CMD_WRITE_RX_CTL failed: %d", ret);
471 goto out2;
472 }
473
474 /* Get the MAC address */
475 memset(buf, 0, ETH_ALEN);
476 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_NODE_ID,
477 0, 0, 6, buf)) < 0) {
478 dbg("read AX_CMD_READ_NODE_ID failed: %d", ret);
479 goto out2;
480 }
481 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
482
483 /* Get the PHY id */
484 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID,
485 0, 0, 2, buf)) < 0) {
486 dbg("error on read AX_CMD_READ_PHY_ID: %02x", ret);
487 goto out2;
488 } else if (ret < 2) {
489 /* this should always return 2 bytes */
490 dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
491 ret);
492 ret = -EIO;
493 goto out2;
494 }
495
496 /* Initialize MII structure */
497 dev->mii.dev = dev->net;
498 dev->mii.mdio_read = ax8817x_mdio_read;
499 dev->mii.mdio_write = ax8817x_mdio_write;
500 dev->mii.phy_id_mask = 0x3f;
501 dev->mii.reg_num_mask = 0x1f;
502 dev->mii.phy_id = *((u8 *)buf + 1);
503 dev->net->do_ioctl = ax8817x_ioctl;
504
505 dev->net->set_multicast_list = ax8817x_set_multicast;
506 dev->net->ethtool_ops = &ax8817x_ethtool_ops;
507
508 ax8817x_mdio_write_le(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
509 ax8817x_mdio_write_le(dev->net, dev->mii.phy_id, MII_ADVERTISE,
510 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
511 mii_nway_restart(&dev->mii);
512
513 return 0;
514 out2:
515 kfree(buf);
516 out1:
517 return ret;
518 }
519
520 static struct ethtool_ops ax88772_ethtool_ops = {
521 .get_drvinfo = ax8817x_get_drvinfo,
522 .get_link = ethtool_op_get_link,
523 .get_msglevel = usbnet_get_msglevel,
524 .set_msglevel = usbnet_set_msglevel,
525 .get_wol = ax8817x_get_wol,
526 .set_wol = ax8817x_set_wol,
527 .get_eeprom_len = ax8817x_get_eeprom_len,
528 .get_eeprom = ax8817x_get_eeprom,
529 .get_settings = ax8817x_get_settings,
530 .set_settings = ax8817x_set_settings,
531 };
532
533 static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
534 {
535 int ret;
536 void *buf;
537
538 usbnet_get_endpoints(dev,intf);
539
540 buf = kmalloc(6, GFP_KERNEL);
541 if(!buf) {
542 dbg ("Cannot allocate memory for buffer");
543 ret = -ENOMEM;
544 goto out1;
545 }
546
547 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
548 0x00B0, 0, 0, buf)) < 0)
549 goto out2;
550
551 msleep(5);
552 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_PHY_SELECT,
553 0x0001, 0, 0, buf)) < 0) {
554 dbg("Select PHY #1 failed: %d", ret);
555 goto out2;
556 }
557
558 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPPD,
559 0, 0, buf)) < 0) {
560 dbg("Failed to power down internal PHY: %d", ret);
561 goto out2;
562 }
563
564 msleep(150);
565 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_CLEAR,
566 0, 0, buf)) < 0) {
567 dbg("Failed to perform software reset: %d", ret);
568 goto out2;
569 }
570
571 msleep(150);
572 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET,
573 AX_SWRESET_IPRL | AX_SWRESET_PRL,
574 0, 0, buf)) < 0) {
575 dbg("Failed to set Internal/External PHY reset control: %d",
576 ret);
577 goto out2;
578 }
579
580 msleep(150);
581 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL,
582 0x0000, 0, 0, buf)) < 0) {
583 dbg("Failed to reset RX_CTL: %d", ret);
584 goto out2;
585 }
586
587 /* Get the MAC address */
588 memset(buf, 0, ETH_ALEN);
589 if ((ret = ax8817x_read_cmd(dev, AX88772_CMD_READ_NODE_ID,
590 0, 0, ETH_ALEN, buf)) < 0) {
591 dbg("Failed to read MAC address: %d", ret);
592 goto out2;
593 }
594 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
595
596 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII,
597 0, 0, 0, buf)) < 0) {
598 dbg("Enabling software MII failed: %d", ret);
599 goto out2;
600 }
601
602 if (((ret = ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG,
603 0x0010, 2, 2, buf)) < 0)
604 || (*((u16 *)buf) != 0x003b)) {
605 dbg("Read PHY register 2 must be 0x3b00: %d", ret);
606 goto out2;
607 }
608
609 /* Initialize MII structure */
610 dev->mii.dev = dev->net;
611 dev->mii.mdio_read = ax8817x_mdio_read;
612 dev->mii.mdio_write = ax8817x_mdio_write;
613 dev->mii.phy_id_mask = 0xff;
614 dev->mii.reg_num_mask = 0xff;
615 dev->net->do_ioctl = ax8817x_ioctl;
616
617 /* Get the PHY id */
618 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID,
619 0, 0, 2, buf)) < 0) {
620 dbg("Error reading PHY ID: %02x", ret);
621 goto out2;
622 } else if (ret < 2) {
623 /* this should always return 2 bytes */
624 dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
625 ret);
626 ret = -EIO;
627 goto out2;
628 }
629 dev->mii.phy_id = *((u8 *)buf + 1);
630
631 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_PRL,
632 0, 0, buf)) < 0) {
633 dbg("Set external PHY reset pin level: %d", ret);
634 goto out2;
635 }
636 msleep(150);
637 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET,
638 AX_SWRESET_IPRL | AX_SWRESET_PRL,
639 0, 0, buf)) < 0) {
640 dbg("Set Internal/External PHY reset control: %d", ret);
641 goto out2;
642 }
643 msleep(150);
644
645
646 dev->net->set_multicast_list = ax8817x_set_multicast;
647 dev->net->ethtool_ops = &ax88772_ethtool_ops;
648
649 ax8817x_mdio_write_le(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
650 ax8817x_mdio_write_le(dev->net, dev->mii.phy_id, MII_ADVERTISE,
651 ADVERTISE_ALL | ADVERTISE_CSMA);
652 mii_nway_restart(&dev->mii);
653
654 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE,
655 AX88772_MEDIUM_DEFAULT, 0, 0, buf)) < 0) {
656 dbg("Write medium mode register: %d", ret);
657 goto out2;
658 }
659
660 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_IPG0,
661 AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
662 AX88772_IPG2_DEFAULT, 0, buf)) < 0) {
663 dbg("Write IPG,IPG1,IPG2 failed: %d", ret);
664 goto out2;
665 }
666 if ((ret =
667 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf)) < 0) {
668 dbg("Failed to set hardware MII: %02x", ret);
669 goto out2;
670 }
671
672 /* Set RX_CTL to default values with 2k buffer, and enable cactus */
673 if ((ret =
674 ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0088, 0, 0,
675 buf)) < 0) {
676 dbg("Reset RX_CTL failed: %d", ret);
677 goto out2;
678 }
679
680 kfree(buf);
681
682 /* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
683 if (dev->driver_info->flags & FLAG_FRAMING_AX) {
684 /* hard_mtu is still the default - the device does not support
685 jumbo eth frames */
686 dev->rx_urb_size = 2048;
687 }
688
689 return 0;
690
691 out2:
692 kfree(buf);
693 out1:
694 return ret;
695 }
696
697 static int ax88772_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
698 {
699 u8 *head;
700 u32 header;
701 char *packet;
702 struct sk_buff *ax_skb;
703 u16 size;
704
705 head = (u8 *) skb->data;
706 memcpy(&header, head, sizeof(header));
707 le32_to_cpus(&header);
708 packet = head + sizeof(header);
709
710 skb_pull(skb, 4);
711
712 while (skb->len > 0) {
713 if ((short)(header & 0x0000ffff) !=
714 ~((short)((header & 0xffff0000) >> 16))) {
715 devdbg(dev,"header length data is error");
716 }
717 /* get the packet length */
718 size = (u16) (header & 0x0000ffff);
719
720 if ((skb->len) - ((size + 1) & 0xfffe) == 0)
721 return 2;
722 if (size > ETH_FRAME_LEN) {
723 devdbg(dev,"invalid rx length %d", size);
724 return 0;
725 }
726 ax_skb = skb_clone(skb, GFP_ATOMIC);
727 if (ax_skb) {
728 ax_skb->len = size;
729 ax_skb->data = packet;
730 ax_skb->tail = packet + size;
731 usbnet_skb_return(dev, ax_skb);
732 } else {
733 return 0;
734 }
735
736 skb_pull(skb, (size + 1) & 0xfffe);
737
738 if (skb->len == 0)
739 break;
740
741 head = (u8 *) skb->data;
742 memcpy(&header, head, sizeof(header));
743 le32_to_cpus(&header);
744 packet = head + sizeof(header);
745 skb_pull(skb, 4);
746 }
747
748 if (skb->len < 0) {
749 devdbg(dev,"invalid rx length %d", skb->len);
750 return 0;
751 }
752 return 1;
753 }
754
755 static struct sk_buff *ax88772_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
756 unsigned flags)
757 {
758 int padlen;
759 int headroom = skb_headroom(skb);
760 int tailroom = skb_tailroom(skb);
761 u32 packet_len;
762 u32 padbytes = 0xffff0000;
763
764 padlen = ((skb->len + 4) % 512) ? 0 : 4;
765
766 if ((!skb_cloned(skb))
767 && ((headroom + tailroom) >= (4 + padlen))) {
768 if ((headroom < 4) || (tailroom < padlen)) {
769 skb->data = memmove(skb->head + 4, skb->data, skb->len);
770 skb->tail = skb->data + skb->len;
771 }
772 } else {
773 struct sk_buff *skb2;
774 skb2 = skb_copy_expand(skb, 4, padlen, flags);
775 dev_kfree_skb_any(skb);
776 skb = skb2;
777 if (!skb)
778 return NULL;
779 }
780
781 skb_push(skb, 4);
782 packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
783 memcpy(skb->data, &packet_len, sizeof(packet_len));
784
785 if ((skb->len % 512) == 0) {
786 memcpy( skb->tail, &padbytes, sizeof(padbytes));
787 skb_put(skb, sizeof(padbytes));
788 }
789 return skb;
790 }
791
792 static int ax88772_link_reset(struct usbnet *dev)
793 {
794 u16 lpa;
795 u16 adv;
796 u16 res;
797 u16 mode;
798
799 mode = AX88772_MEDIUM_DEFAULT;
800 lpa = ax8817x_mdio_read_le(dev->net, dev->mii.phy_id, MII_LPA);
801 adv = ax8817x_mdio_read_le(dev->net, dev->mii.phy_id, MII_ADVERTISE);
802 res = mii_nway_result(lpa|adv);
803
804 if ((res & LPA_DUPLEX) == 0)
805 mode &= ~AX88772_MEDIUM_FULL_DUPLEX;
806 if ((res & LPA_100) == 0)
807 mode &= ~AX88772_MEDIUM_100MB;
808 ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
809
810 return 0;
811 }
812
813 static const struct driver_info ax8817x_info = {
814 .description = "ASIX AX8817x USB 2.0 Ethernet",
815 .bind = ax8817x_bind,
816 .status = ax8817x_status,
817 .link_reset = ax88172_link_reset,
818 .reset = ax88172_link_reset,
819 .flags = FLAG_ETHER,
820 .data = 0x00130103,
821 };
822
823 static const struct driver_info dlink_dub_e100_info = {
824 .description = "DLink DUB-E100 USB Ethernet",
825 .bind = ax8817x_bind,
826 .status = ax8817x_status,
827 .link_reset = ax88172_link_reset,
828 .reset = ax88172_link_reset,
829 .flags = FLAG_ETHER,
830 .data = 0x009f9d9f,
831 };
832
833 static const struct driver_info netgear_fa120_info = {
834 .description = "Netgear FA-120 USB Ethernet",
835 .bind = ax8817x_bind,
836 .status = ax8817x_status,
837 .link_reset = ax88172_link_reset,
838 .reset = ax88172_link_reset,
839 .flags = FLAG_ETHER,
840 .data = 0x00130103,
841 };
842
843 static const struct driver_info hawking_uf200_info = {
844 .description = "Hawking UF200 USB Ethernet",
845 .bind = ax8817x_bind,
846 .status = ax8817x_status,
847 .link_reset = ax88172_link_reset,
848 .reset = ax88172_link_reset,
849 .flags = FLAG_ETHER,
850 .data = 0x001f1d1f,
851 };
852
853 static const struct driver_info ax88772_info = {
854 .description = "ASIX AX88772 USB 2.0 Ethernet",
855 .bind = ax88772_bind,
856 .status = ax8817x_status,
857 .link_reset = ax88772_link_reset,
858 .reset = ax88772_link_reset,
859 .flags = FLAG_ETHER | FLAG_FRAMING_AX,
860 .rx_fixup = ax88772_rx_fixup,
861 .tx_fixup = ax88772_tx_fixup,
862 .data = 0x00130103,
863 };
864
865 static const struct usb_device_id products [] = {
866 {
867 // Linksys USB200M
868 USB_DEVICE (0x077b, 0x2226),
869 .driver_info = (unsigned long) &ax8817x_info,
870 }, {
871 // Netgear FA120
872 USB_DEVICE (0x0846, 0x1040),
873 .driver_info = (unsigned long) &netgear_fa120_info,
874 }, {
875 // DLink DUB-E100
876 USB_DEVICE (0x2001, 0x1a00),
877 .driver_info = (unsigned long) &dlink_dub_e100_info,
878 }, {
879 // Intellinet, ST Lab USB Ethernet
880 USB_DEVICE (0x0b95, 0x1720),
881 .driver_info = (unsigned long) &ax8817x_info,
882 }, {
883 // Hawking UF200, TrendNet TU2-ET100
884 USB_DEVICE (0x07b8, 0x420a),
885 .driver_info = (unsigned long) &hawking_uf200_info,
886 }, {
887 // Billionton Systems, USB2AR
888 USB_DEVICE (0x08dd, 0x90ff),
889 .driver_info = (unsigned long) &ax8817x_info,
890 }, {
891 // ATEN UC210T
892 USB_DEVICE (0x0557, 0x2009),
893 .driver_info = (unsigned long) &ax8817x_info,
894 }, {
895 // Buffalo LUA-U2-KTX
896 USB_DEVICE (0x0411, 0x003d),
897 .driver_info = (unsigned long) &ax8817x_info,
898 }, {
899 // Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
900 USB_DEVICE (0x6189, 0x182d),
901 .driver_info = (unsigned long) &ax8817x_info,
902 }, {
903 // corega FEther USB2-TX
904 USB_DEVICE (0x07aa, 0x0017),
905 .driver_info = (unsigned long) &ax8817x_info,
906 }, {
907 // Surecom EP-1427X-2
908 USB_DEVICE (0x1189, 0x0893),
909 .driver_info = (unsigned long) &ax8817x_info,
910 }, {
911 // goodway corp usb gwusb2e
912 USB_DEVICE (0x1631, 0x6200),
913 .driver_info = (unsigned long) &ax8817x_info,
914 }, {
915 // ASIX AX88772 10/100
916 USB_DEVICE (0x0b95, 0x7720),
917 .driver_info = (unsigned long) &ax88772_info,
918 },
919 { }, // END
920 };
921 MODULE_DEVICE_TABLE(usb, products);
922
923 static struct usb_driver asix_driver = {
924 .owner = THIS_MODULE,
925 .name = "asix",
926 .id_table = products,
927 .probe = usbnet_probe,
928 .suspend = usbnet_suspend,
929 .resume = usbnet_resume,
930 .disconnect = usbnet_disconnect,
931 };
932
933 static int __init asix_init(void)
934 {
935 return usb_register(&asix_driver);
936 }
937 module_init(asix_init);
938
939 static void __exit asix_exit(void)
940 {
941 usb_deregister(&asix_driver);
942 }
943 module_exit(asix_exit);
944
945 MODULE_AUTHOR("David Hollis");
946 MODULE_DESCRIPTION("ASIX AX8817X based USB 2.0 Ethernet Devices");
947 MODULE_LICENSE("GPL");
948
Linux kernel - Deliverables
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