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[PATCH] arch/sparc64/Kconfig: fix HUGETLB_PAGE_SIZE_64K dependencies
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / usb / net / asix.c
blob542120ef1fd2891015255212e4df7be1c507449c
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 #include <linux/module.h>
27 #include <linux/kmod.h>
28 #include <linux/sched.h>
29 #include <linux/init.h>
30 #include <linux/netdevice.h>
31 #include <linux/etherdevice.h>
32 #include <linux/ethtool.h>
33 #include <linux/workqueue.h>
34 #include <linux/mii.h>
35 #include <linux/usb.h>
36 #include <linux/crc32.h>
37
38 #include "usbnet.h"
39
40
41 /* ASIX AX8817X based USB 2.0 Ethernet Devices */
42
43 #define AX_CMD_SET_SW_MII 0x06
44 #define AX_CMD_READ_MII_REG 0x07
45 #define AX_CMD_WRITE_MII_REG 0x08
46 #define AX_CMD_SET_HW_MII 0x0a
47 #define AX_CMD_READ_EEPROM 0x0b
48 #define AX_CMD_WRITE_EEPROM 0x0c
49 #define AX_CMD_WRITE_ENABLE 0x0d
50 #define AX_CMD_WRITE_DISABLE 0x0e
51 #define AX_CMD_WRITE_RX_CTL 0x10
52 #define AX_CMD_READ_IPG012 0x11
53 #define AX_CMD_WRITE_IPG0 0x12
54 #define AX_CMD_WRITE_IPG1 0x13
55 #define AX_CMD_WRITE_IPG2 0x14
56 #define AX_CMD_WRITE_MULTI_FILTER 0x16
57 #define AX_CMD_READ_NODE_ID 0x17
58 #define AX_CMD_READ_PHY_ID 0x19
59 #define AX_CMD_READ_MEDIUM_STATUS 0x1a
60 #define AX_CMD_WRITE_MEDIUM_MODE 0x1b
61 #define AX_CMD_READ_MONITOR_MODE 0x1c
62 #define AX_CMD_WRITE_MONITOR_MODE 0x1d
63 #define AX_CMD_WRITE_GPIOS 0x1f
64 #define AX_CMD_SW_RESET 0x20
65 #define AX_CMD_SW_PHY_STATUS 0x21
66 #define AX_CMD_SW_PHY_SELECT 0x22
67 #define AX88772_CMD_READ_NODE_ID 0x13
68
69 #define AX_MONITOR_MODE 0x01
70 #define AX_MONITOR_LINK 0x02
71 #define AX_MONITOR_MAGIC 0x04
72 #define AX_MONITOR_HSFS 0x10
73
74 /* AX88172 Medium Status Register values */
75 #define AX_MEDIUM_FULL_DUPLEX 0x02
76 #define AX_MEDIUM_TX_ABORT_ALLOW 0x04
77 #define AX_MEDIUM_FLOW_CONTROL_EN 0x10
78
79 #define AX_MCAST_FILTER_SIZE 8
80 #define AX_MAX_MCAST 64
81
82 #define AX_EEPROM_LEN 0x40
83
84 #define AX_SWRESET_CLEAR 0x00
85 #define AX_SWRESET_RR 0x01
86 #define AX_SWRESET_RT 0x02
87 #define AX_SWRESET_PRTE 0x04
88 #define AX_SWRESET_PRL 0x08
89 #define AX_SWRESET_BZ 0x10
90 #define AX_SWRESET_IPRL 0x20
91 #define AX_SWRESET_IPPD 0x40
92
93 #define AX88772_IPG0_DEFAULT 0x15
94 #define AX88772_IPG1_DEFAULT 0x0c
95 #define AX88772_IPG2_DEFAULT 0x12
96
97 #define AX88772_MEDIUM_FULL_DUPLEX 0x0002
98 #define AX88772_MEDIUM_RESERVED 0x0004
99 #define AX88772_MEDIUM_RX_FC_ENABLE 0x0010
100 #define AX88772_MEDIUM_TX_FC_ENABLE 0x0020
101 #define AX88772_MEDIUM_PAUSE_FORMAT 0x0080
102 #define AX88772_MEDIUM_RX_ENABLE 0x0100
103 #define AX88772_MEDIUM_100MB 0x0200
104 #define AX88772_MEDIUM_DEFAULT \
105 (AX88772_MEDIUM_FULL_DUPLEX | AX88772_MEDIUM_RX_FC_ENABLE | \
106 AX88772_MEDIUM_TX_FC_ENABLE | AX88772_MEDIUM_100MB | \
107 AX88772_MEDIUM_RESERVED | AX88772_MEDIUM_RX_ENABLE )
108
109 #define AX_EEPROM_MAGIC 0xdeadbeef
110
111 /* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
112 struct ax8817x_data {
113 u8 multi_filter[AX_MCAST_FILTER_SIZE];
114 };
115
116 struct ax88172_int_data {
117 u16 res1;
118 u8 link;
119 u16 res2;
120 u8 status;
121 u16 res3;
122 } __attribute__ ((packed));
123
124 static int ax8817x_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
125 u16 size, void *data)
126 {
127 return usb_control_msg(
128 dev->udev,
129 usb_rcvctrlpipe(dev->udev, 0),
130 cmd,
131 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
132 value,
133 index,
134 data,
135 size,
136 USB_CTRL_GET_TIMEOUT);
137 }
138
139 static int ax8817x_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
140 u16 size, void *data)
141 {
142 return usb_control_msg(
143 dev->udev,
144 usb_sndctrlpipe(dev->udev, 0),
145 cmd,
146 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
147 value,
148 index,
149 data,
150 size,
151 USB_CTRL_SET_TIMEOUT);
152 }
153
154 static void ax8817x_async_cmd_callback(struct urb *urb, struct pt_regs *regs)
155 {
156 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
157
158 if (urb->status < 0)
159 printk(KERN_DEBUG "ax8817x_async_cmd_callback() failed with %d",
160 urb->status);
161
162 kfree(req);
163 usb_free_urb(urb);
164 }
165
166 static void ax8817x_status(struct usbnet *dev, struct urb *urb)
167 {
168 struct ax88172_int_data *event;
169 int link;
170
171 if (urb->actual_length < 8)
172 return;
173
174 event = urb->transfer_buffer;
175 link = event->link & 0x01;
176 if (netif_carrier_ok(dev->net) != link) {
177 if (link) {
178 netif_carrier_on(dev->net);
179 usbnet_defer_kevent (dev, EVENT_LINK_RESET );
180 } else
181 netif_carrier_off(dev->net);
182 devdbg(dev, "ax8817x - Link Status is: %d", link);
183 }
184 }
185
186 static void
187 ax8817x_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
188 u16 size, void *data)
189 {
190 struct usb_ctrlrequest *req;
191 int status;
192 struct urb *urb;
193
194 if ((urb = usb_alloc_urb(0, GFP_ATOMIC)) == NULL) {
195 devdbg(dev, "Error allocating URB in write_cmd_async!");
196 return;
197 }
198
199 if ((req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC)) == NULL) {
200 deverr(dev, "Failed to allocate memory for control request");
201 usb_free_urb(urb);
202 return;
203 }
204
205 req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
206 req->bRequest = cmd;
207 req->wValue = cpu_to_le16(value);
208 req->wIndex = cpu_to_le16(index);
209 req->wLength = cpu_to_le16(size);
210
211 usb_fill_control_urb(urb, dev->udev,
212 usb_sndctrlpipe(dev->udev, 0),
213 (void *)req, data, size,
214 ax8817x_async_cmd_callback, req);
215
216 if((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
217 deverr(dev, "Error submitting the control message: status=%d",
218 status);
219 kfree(req);
220 usb_free_urb(urb);
221 }
222 }
223
224 static void ax8817x_set_multicast(struct net_device *net)
225 {
226 struct usbnet *dev = netdev_priv(net);
227 struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
228 u8 rx_ctl = 0x8c;
229
230 if (net->flags & IFF_PROMISC) {
231 rx_ctl |= 0x01;
232 } else if (net->flags & IFF_ALLMULTI
233 || net->mc_count > AX_MAX_MCAST) {
234 rx_ctl |= 0x02;
235 } else if (net->mc_count == 0) {
236 /* just broadcast and directed */
237 } else {
238 /* We use the 20 byte dev->data
239 * for our 8 byte filter buffer
240 * to avoid allocating memory that
241 * is tricky to free later */
242 struct dev_mc_list *mc_list = net->mc_list;
243 u32 crc_bits;
244 int i;
245
246 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
247
248 /* Build the multicast hash filter. */
249 for (i = 0; i < net->mc_count; i++) {
250 crc_bits =
251 ether_crc(ETH_ALEN,
252 mc_list->dmi_addr) >> 26;
253 data->multi_filter[crc_bits >> 3] |=
254 1 << (crc_bits & 7);
255 mc_list = mc_list->next;
256 }
257
258 ax8817x_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
259 AX_MCAST_FILTER_SIZE, data->multi_filter);
260
261 rx_ctl |= 0x10;
262 }
263
264 ax8817x_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
265 }
266
267 static int ax8817x_mdio_read(struct net_device *netdev, int phy_id, int loc)
268 {
269 struct usbnet *dev = netdev_priv(netdev);
270 u16 res;
271 u8 buf[1];
272
273 ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
274 ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
275 (__u16)loc, 2, (u16 *)&res);
276 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
277
278 return res & 0xffff;
279 }
280
281 /* same as above, but converts resulting value to cpu byte order */
282 static int ax8817x_mdio_read_le(struct net_device *netdev, int phy_id, int loc)
283 {
284 return le16_to_cpu(ax8817x_mdio_read(netdev,phy_id, loc));
285 }
286
287 static void
288 ax8817x_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
289 {
290 struct usbnet *dev = netdev_priv(netdev);
291 u16 res = val;
292 u8 buf[1];
293
294 ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
295 ax8817x_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
296 (__u16)loc, 2, (u16 *)&res);
297 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
298 }
299
300 /* same as above, but converts new value to le16 byte order before writing */
301 static void
302 ax8817x_mdio_write_le(struct net_device *netdev, int phy_id, int loc, int val)
303 {
304 ax8817x_mdio_write( netdev, phy_id, loc, cpu_to_le16(val) );
305 }
306
307 static int ax88172_link_reset(struct usbnet *dev)
308 {
309 u16 lpa;
310 u16 adv;
311 u16 res;
312 u8 mode;
313
314 mode = AX_MEDIUM_TX_ABORT_ALLOW | AX_MEDIUM_FLOW_CONTROL_EN;
315 lpa = ax8817x_mdio_read_le(dev->net, dev->mii.phy_id, MII_LPA);
316 adv = ax8817x_mdio_read_le(dev->net, dev->mii.phy_id, MII_ADVERTISE);
317 res = mii_nway_result(lpa|adv);
318 if (res & LPA_DUPLEX)
319 mode |= AX_MEDIUM_FULL_DUPLEX;
320 ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
321
322 return 0;
323 }
324
325 static void
326 ax8817x_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
327 {
328 struct usbnet *dev = netdev_priv(net);
329 u8 opt;
330
331 if (ax8817x_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
332 wolinfo->supported = 0;
333 wolinfo->wolopts = 0;
334 return;
335 }
336 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
337 wolinfo->wolopts = 0;
338 if (opt & AX_MONITOR_MODE) {
339 if (opt & AX_MONITOR_LINK)
340 wolinfo->wolopts |= WAKE_PHY;
341 if (opt & AX_MONITOR_MAGIC)
342 wolinfo->wolopts |= WAKE_MAGIC;
343 }
344 }
345
346 static int
347 ax8817x_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
348 {
349 struct usbnet *dev = netdev_priv(net);
350 u8 opt = 0;
351 u8 buf[1];
352
353 if (wolinfo->wolopts & WAKE_PHY)
354 opt |= AX_MONITOR_LINK;
355 if (wolinfo->wolopts & WAKE_MAGIC)
356 opt |= AX_MONITOR_MAGIC;
357 if (opt != 0)
358 opt |= AX_MONITOR_MODE;
359
360 if (ax8817x_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
361 opt, 0, 0, &buf) < 0)
362 return -EINVAL;
363
364 return 0;
365 }
366
367 static int ax8817x_get_eeprom_len(struct net_device *net)
368 {
369 return AX_EEPROM_LEN;
370 }
371
372 static int ax8817x_get_eeprom(struct net_device *net,
373 struct ethtool_eeprom *eeprom, u8 *data)
374 {
375 struct usbnet *dev = netdev_priv(net);
376 u16 *ebuf = (u16 *)data;
377 int i;
378
379 /* Crude hack to ensure that we don't overwrite memory
380 * if an odd length is supplied
381 */
382 if (eeprom->len % 2)
383 return -EINVAL;
384
385 eeprom->magic = AX_EEPROM_MAGIC;
386
387 /* ax8817x returns 2 bytes from eeprom on read */
388 for (i=0; i < eeprom->len / 2; i++) {
389 if (ax8817x_read_cmd(dev, AX_CMD_READ_EEPROM,
390 eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
391 return -EINVAL;
392 }
393 return 0;
394 }
395
396 static void ax8817x_get_drvinfo (struct net_device *net,
397 struct ethtool_drvinfo *info)
398 {
399 /* Inherit standard device info */
400 usbnet_get_drvinfo(net, info);
401 info->eedump_len = 0x3e;
402 }
403
404 static int ax8817x_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
405 {
406 struct usbnet *dev = netdev_priv(net);
407
408 return mii_ethtool_gset(&dev->mii,cmd);
409 }
410
411 static int ax8817x_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
412 {
413 struct usbnet *dev = netdev_priv(net);
414
415 return mii_ethtool_sset(&dev->mii,cmd);
416 }
417
418 /* We need to override some ethtool_ops so we require our
419 own structure so we don't interfere with other usbnet
420 devices that may be connected at the same time. */
421 static struct ethtool_ops ax8817x_ethtool_ops = {
422 .get_drvinfo = ax8817x_get_drvinfo,
423 .get_link = ethtool_op_get_link,
424 .get_msglevel = usbnet_get_msglevel,
425 .set_msglevel = usbnet_set_msglevel,
426 .get_wol = ax8817x_get_wol,
427 .set_wol = ax8817x_set_wol,
428 .get_eeprom_len = ax8817x_get_eeprom_len,
429 .get_eeprom = ax8817x_get_eeprom,
430 .get_settings = ax8817x_get_settings,
431 .set_settings = ax8817x_set_settings,
432 };
433
434 static int ax8817x_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
435 {
436 struct usbnet *dev = netdev_priv(net);
437
438 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
439 }
440
441 static int ax8817x_bind(struct usbnet *dev, struct usb_interface *intf)
442 {
443 int ret = 0;
444 void *buf;
445 int i;
446 unsigned long gpio_bits = dev->driver_info->data;
447
448 usbnet_get_endpoints(dev,intf);
449
450 buf = kmalloc(ETH_ALEN, GFP_KERNEL);
451 if(!buf) {
452 ret = -ENOMEM;
453 goto out1;
454 }
455
456 /* Toggle the GPIOs in a manufacturer/model specific way */
457 for (i = 2; i >= 0; i--) {
458 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
459 (gpio_bits >> (i * 8)) & 0xff, 0, 0,
460 buf)) < 0)
461 goto out2;
462 msleep(5);
463 }
464
465 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL,
466 0x80, 0, 0, buf)) < 0) {
467 dbg("send AX_CMD_WRITE_RX_CTL failed: %d", ret);
468 goto out2;
469 }
470
471 /* Get the MAC address */
472 memset(buf, 0, ETH_ALEN);
473 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_NODE_ID,
474 0, 0, 6, buf)) < 0) {
475 dbg("read AX_CMD_READ_NODE_ID failed: %d", ret);
476 goto out2;
477 }
478 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
479
480 /* Get the PHY id */
481 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID,
482 0, 0, 2, buf)) < 0) {
483 dbg("error on read AX_CMD_READ_PHY_ID: %02x", ret);
484 goto out2;
485 } else if (ret < 2) {
486 /* this should always return 2 bytes */
487 dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
488 ret);
489 ret = -EIO;
490 goto out2;
491 }
492
493 /* Initialize MII structure */
494 dev->mii.dev = dev->net;
495 dev->mii.mdio_read = ax8817x_mdio_read;
496 dev->mii.mdio_write = ax8817x_mdio_write;
497 dev->mii.phy_id_mask = 0x3f;
498 dev->mii.reg_num_mask = 0x1f;
499 dev->mii.phy_id = *((u8 *)buf + 1);
500 dev->net->do_ioctl = ax8817x_ioctl;
501
502 dev->net->set_multicast_list = ax8817x_set_multicast;
503 dev->net->ethtool_ops = &ax8817x_ethtool_ops;
504
505 ax8817x_mdio_write_le(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
506 ax8817x_mdio_write_le(dev->net, dev->mii.phy_id, MII_ADVERTISE,
507 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
508 mii_nway_restart(&dev->mii);
509
510 return 0;
511 out2:
512 kfree(buf);
513 out1:
514 return ret;
515 }
516
517 static struct ethtool_ops ax88772_ethtool_ops = {
518 .get_drvinfo = ax8817x_get_drvinfo,
519 .get_link = ethtool_op_get_link,
520 .get_msglevel = usbnet_get_msglevel,
521 .set_msglevel = usbnet_set_msglevel,
522 .get_wol = ax8817x_get_wol,
523 .set_wol = ax8817x_set_wol,
524 .get_eeprom_len = ax8817x_get_eeprom_len,
525 .get_eeprom = ax8817x_get_eeprom,
526 .get_settings = ax8817x_get_settings,
527 .set_settings = ax8817x_set_settings,
528 };
529
530 static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
531 {
532 int ret;
533 void *buf;
534
535 usbnet_get_endpoints(dev,intf);
536
537 buf = kmalloc(6, GFP_KERNEL);
538 if(!buf) {
539 dbg ("Cannot allocate memory for buffer");
540 ret = -ENOMEM;
541 goto out1;
542 }
543
544 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
545 0x00B0, 0, 0, buf)) < 0)
546 goto out2;
547
548 msleep(5);
549 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_PHY_SELECT,
550 0x0001, 0, 0, buf)) < 0) {
551 dbg("Select PHY #1 failed: %d", ret);
552 goto out2;
553 }
554
555 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPPD,
556 0, 0, buf)) < 0) {
557 dbg("Failed to power down internal PHY: %d", ret);
558 goto out2;
559 }
560
561 msleep(150);
562 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_CLEAR,
563 0, 0, buf)) < 0) {
564 dbg("Failed to perform software reset: %d", ret);
565 goto out2;
566 }
567
568 msleep(150);
569 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET,
570 AX_SWRESET_IPRL | AX_SWRESET_PRL,
571 0, 0, buf)) < 0) {
572 dbg("Failed to set Internal/External PHY reset control: %d",
573 ret);
574 goto out2;
575 }
576
577 msleep(150);
578 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL,
579 0x0000, 0, 0, buf)) < 0) {
580 dbg("Failed to reset RX_CTL: %d", ret);
581 goto out2;
582 }
583
584 /* Get the MAC address */
585 memset(buf, 0, ETH_ALEN);
586 if ((ret = ax8817x_read_cmd(dev, AX88772_CMD_READ_NODE_ID,
587 0, 0, ETH_ALEN, buf)) < 0) {
588 dbg("Failed to read MAC address: %d", ret);
589 goto out2;
590 }
591 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
592
593 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII,
594 0, 0, 0, buf)) < 0) {
595 dbg("Enabling software MII failed: %d", ret);
596 goto out2;
597 }
598
599 if (((ret = ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG,
600 0x0010, 2, 2, buf)) < 0)
601 || (*((u16 *)buf) != 0x003b)) {
602 dbg("Read PHY register 2 must be 0x3b00: %d", ret);
603 goto out2;
604 }
605
606 /* Initialize MII structure */
607 dev->mii.dev = dev->net;
608 dev->mii.mdio_read = ax8817x_mdio_read;
609 dev->mii.mdio_write = ax8817x_mdio_write;
610 dev->mii.phy_id_mask = 0xff;
611 dev->mii.reg_num_mask = 0xff;
612 dev->net->do_ioctl = ax8817x_ioctl;
613
614 /* Get the PHY id */
615 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID,
616 0, 0, 2, buf)) < 0) {
617 dbg("Error reading PHY ID: %02x", ret);
618 goto out2;
619 } else if (ret < 2) {
620 /* this should always return 2 bytes */
621 dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
622 ret);
623 ret = -EIO;
624 goto out2;
625 }
626 dev->mii.phy_id = *((u8 *)buf + 1);
627
628 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_PRL,
629 0, 0, buf)) < 0) {
630 dbg("Set external PHY reset pin level: %d", ret);
631 goto out2;
632 }
633 msleep(150);
634 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_RESET,
635 AX_SWRESET_IPRL | AX_SWRESET_PRL,
636 0, 0, buf)) < 0) {
637 dbg("Set Internal/External PHY reset control: %d", ret);
638 goto out2;
639 }
640 msleep(150);
641
642
643 dev->net->set_multicast_list = ax8817x_set_multicast;
644 dev->net->ethtool_ops = &ax88772_ethtool_ops;
645
646 ax8817x_mdio_write_le(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
647 ax8817x_mdio_write_le(dev->net, dev->mii.phy_id, MII_ADVERTISE,
648 ADVERTISE_ALL | ADVERTISE_CSMA);
649 mii_nway_restart(&dev->mii);
650
651 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE,
652 AX88772_MEDIUM_DEFAULT, 0, 0, buf)) < 0) {
653 dbg("Write medium mode register: %d", ret);
654 goto out2;
655 }
656
657 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_IPG0,
658 AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
659 AX88772_IPG2_DEFAULT, 0, buf)) < 0) {
660 dbg("Write IPG,IPG1,IPG2 failed: %d", ret);
661 goto out2;
662 }
663 if ((ret =
664 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf)) < 0) {
665 dbg("Failed to set hardware MII: %02x", ret);
666 goto out2;
667 }
668
669 /* Set RX_CTL to default values with 2k buffer, and enable cactus */
670 if ((ret =
671 ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0088, 0, 0,
672 buf)) < 0) {
673 dbg("Reset RX_CTL failed: %d", ret);
674 goto out2;
675 }
676
677 kfree(buf);
678
679 /* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
680 if (dev->driver_info->flags & FLAG_FRAMING_AX) {
681 /* hard_mtu is still the default - the device does not support
682 jumbo eth frames */
683 dev->rx_urb_size = 2048;
684 }
685
686 return 0;
687
688 out2:
689 kfree(buf);
690 out1:
691 return ret;
692 }
693
694 static int ax88772_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
695 {
696 u8 *head;
697 u32 header;
698 char *packet;
699 struct sk_buff *ax_skb;
700 u16 size;
701
702 head = (u8 *) skb->data;
703 memcpy(&header, head, sizeof(header));
704 le32_to_cpus(&header);
705 packet = head + sizeof(header);
706
707 skb_pull(skb, 4);
708
709 while (skb->len > 0) {
710 if ((short)(header & 0x0000ffff) !=
711 ~((short)((header & 0xffff0000) >> 16))) {
712 devdbg(dev,"header length data is error");
713 }
714 /* get the packet length */
715 size = (u16) (header & 0x0000ffff);
716
717 if ((skb->len) - ((size + 1) & 0xfffe) == 0)
718 return 2;
719 if (size > ETH_FRAME_LEN) {
720 devdbg(dev,"invalid rx length %d", size);
721 return 0;
722 }
723 ax_skb = skb_clone(skb, GFP_ATOMIC);
724 if (ax_skb) {
725 ax_skb->len = size;
726 ax_skb->data = packet;
727 ax_skb->tail = packet + size;
728 usbnet_skb_return(dev, ax_skb);
729 } else {
730 return 0;
731 }
732
733 skb_pull(skb, (size + 1) & 0xfffe);
734
735 if (skb->len == 0)
736 break;
737
738 head = (u8 *) skb->data;
739 memcpy(&header, head, sizeof(header));
740 le32_to_cpus(&header);
741 packet = head + sizeof(header);
742 skb_pull(skb, 4);
743 }
744
745 if (skb->len < 0) {
746 devdbg(dev,"invalid rx length %d", skb->len);
747 return 0;
748 }
749 return 1;
750 }
751
752 static struct sk_buff *ax88772_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
753 gfp_t flags)
754 {
755 int padlen;
756 int headroom = skb_headroom(skb);
757 int tailroom = skb_tailroom(skb);
758 u32 packet_len;
759 u32 padbytes = 0xffff0000;
760
761 padlen = ((skb->len + 4) % 512) ? 0 : 4;
762
763 if ((!skb_cloned(skb))
764 && ((headroom + tailroom) >= (4 + padlen))) {
765 if ((headroom < 4) || (tailroom < padlen)) {
766 skb->data = memmove(skb->head + 4, skb->data, skb->len);
767 skb->tail = skb->data + skb->len;
768 }
769 } else {
770 struct sk_buff *skb2;
771 skb2 = skb_copy_expand(skb, 4, padlen, flags);
772 dev_kfree_skb_any(skb);
773 skb = skb2;
774 if (!skb)
775 return NULL;
776 }
777
778 skb_push(skb, 4);
779 packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
780 memcpy(skb->data, &packet_len, sizeof(packet_len));
781
782 if ((skb->len % 512) == 0) {
783 memcpy( skb->tail, &padbytes, sizeof(padbytes));
784 skb_put(skb, sizeof(padbytes));
785 }
786 return skb;
787 }
788
789 static int ax88772_link_reset(struct usbnet *dev)
790 {
791 u16 lpa;
792 u16 adv;
793 u16 res;
794 u16 mode;
795
796 mode = AX88772_MEDIUM_DEFAULT;
797 lpa = ax8817x_mdio_read_le(dev->net, dev->mii.phy_id, MII_LPA);
798 adv = ax8817x_mdio_read_le(dev->net, dev->mii.phy_id, MII_ADVERTISE);
799 res = mii_nway_result(lpa|adv);
800
801 if ((res & LPA_DUPLEX) == 0)
802 mode &= ~AX88772_MEDIUM_FULL_DUPLEX;
803 if ((res & LPA_100) == 0)
804 mode &= ~AX88772_MEDIUM_100MB;
805 ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
806
807 return 0;
808 }
809
810 static const struct driver_info ax8817x_info = {
811 .description = "ASIX AX8817x USB 2.0 Ethernet",
812 .bind = ax8817x_bind,
813 .status = ax8817x_status,
814 .link_reset = ax88172_link_reset,
815 .reset = ax88172_link_reset,
816 .flags = FLAG_ETHER,
817 .data = 0x00130103,
818 };
819
820 static const struct driver_info dlink_dub_e100_info = {
821 .description = "DLink DUB-E100 USB Ethernet",
822 .bind = ax8817x_bind,
823 .status = ax8817x_status,
824 .link_reset = ax88172_link_reset,
825 .reset = ax88172_link_reset,
826 .flags = FLAG_ETHER,
827 .data = 0x009f9d9f,
828 };
829
830 static const struct driver_info netgear_fa120_info = {
831 .description = "Netgear FA-120 USB Ethernet",
832 .bind = ax8817x_bind,
833 .status = ax8817x_status,
834 .link_reset = ax88172_link_reset,
835 .reset = ax88172_link_reset,
836 .flags = FLAG_ETHER,
837 .data = 0x00130103,
838 };
839
840 static const struct driver_info hawking_uf200_info = {
841 .description = "Hawking UF200 USB Ethernet",
842 .bind = ax8817x_bind,
843 .status = ax8817x_status,
844 .link_reset = ax88172_link_reset,
845 .reset = ax88172_link_reset,
846 .flags = FLAG_ETHER,
847 .data = 0x001f1d1f,
848 };
849
850 static const struct driver_info ax88772_info = {
851 .description = "ASIX AX88772 USB 2.0 Ethernet",
852 .bind = ax88772_bind,
853 .status = ax8817x_status,
854 .link_reset = ax88772_link_reset,
855 .reset = ax88772_link_reset,
856 .flags = FLAG_ETHER | FLAG_FRAMING_AX,
857 .rx_fixup = ax88772_rx_fixup,
858 .tx_fixup = ax88772_tx_fixup,
859 .data = 0x00130103,
860 };
861
862 static const struct usb_device_id products [] = {
863 {
864 // Linksys USB200M
865 USB_DEVICE (0x077b, 0x2226),
866 .driver_info = (unsigned long) &ax8817x_info,
867 }, {
868 // Netgear FA120
869 USB_DEVICE (0x0846, 0x1040),
870 .driver_info = (unsigned long) &netgear_fa120_info,
871 }, {
872 // DLink DUB-E100
873 USB_DEVICE (0x2001, 0x1a00),
874 .driver_info = (unsigned long) &dlink_dub_e100_info,
875 }, {
876 // Intellinet, ST Lab USB Ethernet
877 USB_DEVICE (0x0b95, 0x1720),
878 .driver_info = (unsigned long) &ax8817x_info,
879 }, {
880 // Hawking UF200, TrendNet TU2-ET100
881 USB_DEVICE (0x07b8, 0x420a),
882 .driver_info = (unsigned long) &hawking_uf200_info,
883 }, {
884 // Billionton Systems, USB2AR
885 USB_DEVICE (0x08dd, 0x90ff),
886 .driver_info = (unsigned long) &ax8817x_info,
887 }, {
888 // ATEN UC210T
889 USB_DEVICE (0x0557, 0x2009),
890 .driver_info = (unsigned long) &ax8817x_info,
891 }, {
892 // Buffalo LUA-U2-KTX
893 USB_DEVICE (0x0411, 0x003d),
894 .driver_info = (unsigned long) &ax8817x_info,
895 }, {
896 // Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
897 USB_DEVICE (0x6189, 0x182d),
898 .driver_info = (unsigned long) &ax8817x_info,
899 }, {
900 // corega FEther USB2-TX
901 USB_DEVICE (0x07aa, 0x0017),
902 .driver_info = (unsigned long) &ax8817x_info,
903 }, {
904 // Surecom EP-1427X-2
905 USB_DEVICE (0x1189, 0x0893),
906 .driver_info = (unsigned long) &ax8817x_info,
907 }, {
908 // goodway corp usb gwusb2e
909 USB_DEVICE (0x1631, 0x6200),
910 .driver_info = (unsigned long) &ax8817x_info,
911 }, {
912 // ASIX AX88772 10/100
913 USB_DEVICE (0x0b95, 0x7720),
914 .driver_info = (unsigned long) &ax88772_info,
915 },
916 { }, // END
917 };
918 MODULE_DEVICE_TABLE(usb, products);
919
920 static struct usb_driver asix_driver = {
921 .owner = THIS_MODULE,
922 .name = "asix",
923 .id_table = products,
924 .probe = usbnet_probe,
925 .suspend = usbnet_suspend,
926 .resume = usbnet_resume,
927 .disconnect = usbnet_disconnect,
928 };
929
930 static int __init asix_init(void)
931 {
932 return usb_register(&asix_driver);
933 }
934 module_init(asix_init);
935
936 static void __exit asix_exit(void)
937 {
938 usb_deregister(&asix_driver);
939 }
940 module_exit(asix_exit);
941
942 MODULE_AUTHOR("David Hollis");
943 MODULE_DESCRIPTION("ASIX AX8817X based USB 2.0 Ethernet Devices");
944 MODULE_LICENSE("GPL");
945
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree