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USB: usbnet - Add unlink_rx_urbs() call to allow for Jumbo Frames
[deliverable/linux.git] / drivers / usb / net / asix.c
CommitLineData
2e55cc72
DB		 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
2e55cc72
DB		 25#include <linux/module.h>
26#include <linux/kmod.h>
27#include <linux/sched.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
37#include "usbnet.h"
38
2e55cc72
DB		 39/* ASIX AX8817X based USB 2.0 Ethernet Devices */
40
41#define AX_CMD_SET_SW_MII 0x06
42#define AX_CMD_READ_MII_REG 0x07
43#define AX_CMD_WRITE_MII_REG 0x08
44#define AX_CMD_SET_HW_MII 0x0a
45#define AX_CMD_READ_EEPROM 0x0b
46#define AX_CMD_WRITE_EEPROM 0x0c
47#define AX_CMD_WRITE_ENABLE 0x0d
48#define AX_CMD_WRITE_DISABLE 0x0e
49#define AX_CMD_WRITE_RX_CTL 0x10
50#define AX_CMD_READ_IPG012 0x11
51#define AX_CMD_WRITE_IPG0 0x12
52#define AX_CMD_WRITE_IPG1 0x13
53#define AX_CMD_WRITE_IPG2 0x14
54#define AX_CMD_WRITE_MULTI_FILTER 0x16
55#define AX_CMD_READ_NODE_ID 0x17
56#define AX_CMD_READ_PHY_ID 0x19
57#define AX_CMD_READ_MEDIUM_STATUS 0x1a
58#define AX_CMD_WRITE_MEDIUM_MODE 0x1b
59#define AX_CMD_READ_MONITOR_MODE 0x1c
60#define AX_CMD_WRITE_MONITOR_MODE 0x1d
61#define AX_CMD_WRITE_GPIOS 0x1f
62#define AX_CMD_SW_RESET 0x20
63#define AX_CMD_SW_PHY_STATUS 0x21
64#define AX_CMD_SW_PHY_SELECT 0x22
65#define AX88772_CMD_READ_NODE_ID 0x13
66
67#define AX_MONITOR_MODE 0x01
68#define AX_MONITOR_LINK 0x02
69#define AX_MONITOR_MAGIC 0x04
70#define AX_MONITOR_HSFS 0x10
71
72/* AX88172 Medium Status Register values */
73#define AX_MEDIUM_FULL_DUPLEX 0x02
74#define AX_MEDIUM_TX_ABORT_ALLOW 0x04
75#define AX_MEDIUM_FLOW_CONTROL_EN 0x10
76
77#define AX_MCAST_FILTER_SIZE 8
78#define AX_MAX_MCAST 64
79
80#define AX_EEPROM_LEN 0x40
81
82#define AX_SWRESET_CLEAR 0x00
83#define AX_SWRESET_RR 0x01
84#define AX_SWRESET_RT 0x02
85#define AX_SWRESET_PRTE 0x04
86#define AX_SWRESET_PRL 0x08
87#define AX_SWRESET_BZ 0x10
88#define AX_SWRESET_IPRL 0x20
89#define AX_SWRESET_IPPD 0x40
90
91#define AX88772_IPG0_DEFAULT 0x15
92#define AX88772_IPG1_DEFAULT 0x0c
93#define AX88772_IPG2_DEFAULT 0x12
94
95#define AX88772_MEDIUM_FULL_DUPLEX 0x0002
96#define AX88772_MEDIUM_RESERVED 0x0004
97#define AX88772_MEDIUM_RX_FC_ENABLE 0x0010
98#define AX88772_MEDIUM_TX_FC_ENABLE 0x0020
99#define AX88772_MEDIUM_PAUSE_FORMAT 0x0080
100#define AX88772_MEDIUM_RX_ENABLE 0x0100
101#define AX88772_MEDIUM_100MB 0x0200
102#define AX88772_MEDIUM_DEFAULT \
103 (AX88772_MEDIUM_FULL_DUPLEX | AX88772_MEDIUM_RX_FC_ENABLE | \
104 AX88772_MEDIUM_TX_FC_ENABLE | AX88772_MEDIUM_100MB | \
105 AX88772_MEDIUM_RESERVED | AX88772_MEDIUM_RX_ENABLE )
106
107#define AX_EEPROM_MAGIC 0xdeadbeef
108
109/* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
48b1be6a 110struct asix_data {
2e55cc72
DB		 111 u8 multi_filter[AX_MCAST_FILTER_SIZE];
112};
113
114struct ax88172_int_data {
115 u16 res1;
116 u8 link;
117 u16 res2;
118 u8 status;
119 u16 res3;
120} __attribute__ ((packed));
121
48b1be6a 122static int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
2e55cc72
DB		 123 u16 size, void *data)
124{
125 return usb_control_msg(
126 dev->udev,
127 usb_rcvctrlpipe(dev->udev, 0),
128 cmd,
129 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
130 value,
131 index,
132 data,
133 size,
134 USB_CTRL_GET_TIMEOUT);
135}
136
48b1be6a 137static int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
2e55cc72
DB		 138 u16 size, void *data)
139{
140 return usb_control_msg(
141 dev->udev,
142 usb_sndctrlpipe(dev->udev, 0),
143 cmd,
144 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
145 value,
146 index,
147 data,
148 size,
149 USB_CTRL_SET_TIMEOUT);
150}
151
48b1be6a 152static void asix_async_cmd_callback(struct urb *urb, struct pt_regs *regs)
2e55cc72
DB		 153{
154 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
155
156 if (urb->status < 0)
48b1be6a 157 printk(KERN_DEBUG "asix_async_cmd_callback() failed with %d",
2e55cc72
DB		 158 urb->status);
159
160 kfree(req);
161 usb_free_urb(urb);
162}
163
48b1be6a
DH		 164static inline int asix_set_sw_mii(struct usbnet *dev)
165{
166 int ret;
167 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
168 if (ret < 0)
169 devdbg(dev, "Failed to enable software MII access");
170 return ret;
171}
172
173static inline int asix_set_hw_mii(struct usbnet *dev)
174{
175 int ret;
176 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
177 if (ret < 0)
178 devdbg(dev, "Failed to enable hardware MII access");
179 return ret;
180}
181
182static inline int asix_get_phyid(struct usbnet *dev)
183{
184 int ret = 0;
185 void *buf;
186
187 buf = kmalloc(2, GFP_KERNEL);
188 if (!buf)
189 goto out1;
190
191 if ((ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID,
192 0, 0, 2, buf)) < 2) {
193 devdbg(dev, "Error reading PHYID register: %02x", ret);
194 goto out2;
195 }
196 ret = *((u8 *)buf + 1);
197out2:
198 kfree(buf);
199out1:
200 return ret;
201}
202
203static int asix_sw_reset(struct usbnet *dev, u8 flags)
204{
205 int ret;
206
207 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL);
208 if (ret < 0)
209 devdbg(dev,"Failed to send software reset: %02x", ret);
210
211 return ret;
212}
213
214static int asix_write_rx_ctl(struct usbnet *dev, u16 mode)
215{
216 int ret;
217
218 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
219 if (ret < 0)
220 devdbg(dev, "Failed to write RX_CTL mode: %02x", ret);
221
222 return ret;
223}
224
225static void asix_status(struct usbnet *dev, struct urb *urb)
2e55cc72
DB		 226{
227 struct ax88172_int_data *event;
228 int link;
229
230 if (urb->actual_length < 8)
231 return;
232
233 event = urb->transfer_buffer;
234 link = event->link & 0x01;
235 if (netif_carrier_ok(dev->net) != link) {
236 if (link) {
237 netif_carrier_on(dev->net);
238 usbnet_defer_kevent (dev, EVENT_LINK_RESET );
239 } else
240 netif_carrier_off(dev->net);
48b1be6a 241 devdbg(dev, "Link Status is: %d", link);
2e55cc72
DB		 242 }
243}
244
245static void
48b1be6a 246asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
2e55cc72
DB		 247 u16 size, void *data)
248{
249 struct usb_ctrlrequest *req;
250 int status;
251 struct urb *urb;
252
253 if ((urb = usb_alloc_urb(0, GFP_ATOMIC)) == NULL) {
254 devdbg(dev, "Error allocating URB in write_cmd_async!");
255 return;
256 }
257
258 if ((req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC)) == NULL) {
259 deverr(dev, "Failed to allocate memory for control request");
260 usb_free_urb(urb);
261 return;
262 }
263
264 req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
265 req->bRequest = cmd;
266 req->wValue = cpu_to_le16(value);
267 req->wIndex = cpu_to_le16(index);
268 req->wLength = cpu_to_le16(size);
269
270 usb_fill_control_urb(urb, dev->udev,
271 usb_sndctrlpipe(dev->udev, 0),
272 (void *)req, data, size,
48b1be6a 273 asix_async_cmd_callback, req);
2e55cc72
DB		 274
275 if((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
276 deverr(dev, "Error submitting the control message: status=%d",
277 status);
278 kfree(req);
279 usb_free_urb(urb);
280 }
281}
282
48b1be6a 283static void asix_set_multicast(struct net_device *net)
2e55cc72
DB		 284{
285 struct usbnet *dev = netdev_priv(net);
48b1be6a 286 struct asix_data *data = (struct asix_data *)&dev->data;
2e55cc72
DB		 287 u8 rx_ctl = 0x8c;
288
289 if (net->flags & IFF_PROMISC) {
290 rx_ctl |= 0x01;
291 } else if (net->flags & IFF_ALLMULTI
292 || net->mc_count > AX_MAX_MCAST) {
293 rx_ctl |= 0x02;
294 } else if (net->mc_count == 0) {
295 /* just broadcast and directed */
296 } else {
297 /* We use the 20 byte dev->data
298 * for our 8 byte filter buffer
299 * to avoid allocating memory that
300 * is tricky to free later */
301 struct dev_mc_list *mc_list = net->mc_list;
302 u32 crc_bits;
303 int i;
304
305 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
306
307 /* Build the multicast hash filter. */
308 for (i = 0; i < net->mc_count; i++) {
309 crc_bits =
310 ether_crc(ETH_ALEN,
311 mc_list->dmi_addr) >> 26;
312 data->multi_filter[crc_bits >> 3] |=
313 1 << (crc_bits & 7);
314 mc_list = mc_list->next;
315 }
316
48b1be6a 317 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
2e55cc72
DB		 318 AX_MCAST_FILTER_SIZE, data->multi_filter);
319
320 rx_ctl |= 0x10;
321 }
322
48b1be6a 323 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
2e55cc72
DB		 324}
325
48b1be6a 326static int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
2e55cc72
DB		 327{
328 struct usbnet *dev = netdev_priv(netdev);
329 u16 res;
2e55cc72 330
48b1be6a
DH		 331 asix_set_sw_mii(dev);
332 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
2e55cc72 333 (__u16)loc, 2, (u16 *)&res);
48b1be6a 334 asix_set_hw_mii(dev);
2e55cc72
DB		 335
336 return res & 0xffff;
337}
338
339/* same as above, but converts resulting value to cpu byte order */
48b1be6a 340static int asix_mdio_read_le(struct net_device *netdev, int phy_id, int loc)
2e55cc72 341{
48b1be6a 342 return le16_to_cpu(asix_mdio_read(netdev,phy_id, loc));
2e55cc72
DB		 343}
344
345static void
48b1be6a 346asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
2e55cc72
DB		 347{
348 struct usbnet *dev = netdev_priv(netdev);
349 u16 res = val;
2e55cc72 350
48b1be6a
DH		 351 asix_set_sw_mii(dev);
352 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
2e55cc72 353 (__u16)loc, 2, (u16 *)&res);
48b1be6a 354 asix_set_hw_mii(dev);
2e55cc72
DB		 355}
356
357/* same as above, but converts new value to le16 byte order before writing */
358static void
48b1be6a 359asix_mdio_write_le(struct net_device *netdev, int phy_id, int loc, int val)
2e55cc72 360{
48b1be6a 361 asix_mdio_write( netdev, phy_id, loc, cpu_to_le16(val) );
2e55cc72
DB		 362}
363
364static int ax88172_link_reset(struct usbnet *dev)
365{
366 u16 lpa;
367 u16 adv;
368 u16 res;
369 u8 mode;
370
371 mode = AX_MEDIUM_TX_ABORT_ALLOW | AX_MEDIUM_FLOW_CONTROL_EN;
48b1be6a
DH		 372 lpa = asix_mdio_read_le(dev->net, dev->mii.phy_id, MII_LPA);
373 adv = asix_mdio_read_le(dev->net, dev->mii.phy_id, MII_ADVERTISE);
2e55cc72
DB		 374 res = mii_nway_result(lpa|adv);
375 if (res & LPA_DUPLEX)
376 mode |= AX_MEDIUM_FULL_DUPLEX;
48b1be6a 377 asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
2e55cc72
DB		 378
379 return 0;
380}
381
382static void
48b1be6a 383asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
2e55cc72
DB		 384{
385 struct usbnet *dev = netdev_priv(net);
386 u8 opt;
387
48b1be6a 388 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
2e55cc72
DB		 389 wolinfo->supported = 0;
390 wolinfo->wolopts = 0;
391 return;
392 }
393 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
394 wolinfo->wolopts = 0;
395 if (opt & AX_MONITOR_MODE) {
396 if (opt & AX_MONITOR_LINK)
397 wolinfo->wolopts |= WAKE_PHY;
398 if (opt & AX_MONITOR_MAGIC)
399 wolinfo->wolopts |= WAKE_MAGIC;
400 }
401}
402
403static int
48b1be6a 404asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
2e55cc72
DB		 405{
406 struct usbnet *dev = netdev_priv(net);
407 u8 opt = 0;
408 u8 buf[1];
409
410 if (wolinfo->wolopts & WAKE_PHY)
411 opt |= AX_MONITOR_LINK;
412 if (wolinfo->wolopts & WAKE_MAGIC)
413 opt |= AX_MONITOR_MAGIC;
414 if (opt != 0)
415 opt |= AX_MONITOR_MODE;
416
48b1be6a 417 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
2e55cc72
DB		 418 opt, 0, 0, &buf) < 0)
419 return -EINVAL;
420
421 return 0;
422}
423
48b1be6a 424static int asix_get_eeprom_len(struct net_device *net)
2e55cc72
DB		 425{
426 return AX_EEPROM_LEN;
427}
428
48b1be6a 429static int asix_get_eeprom(struct net_device *net,
2e55cc72
DB		 430 struct ethtool_eeprom *eeprom, u8 *data)
431{
432 struct usbnet *dev = netdev_priv(net);
433 u16 *ebuf = (u16 *)data;
434 int i;
435
436 /* Crude hack to ensure that we don't overwrite memory
437 * if an odd length is supplied
438 */
439 if (eeprom->len % 2)
440 return -EINVAL;
441
442 eeprom->magic = AX_EEPROM_MAGIC;
443
444 /* ax8817x returns 2 bytes from eeprom on read */
445 for (i=0; i < eeprom->len / 2; i++) {
48b1be6a 446 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM,
2e55cc72
DB		 447 eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
448 return -EINVAL;
449 }
450 return 0;
451}
452
48b1be6a 453static void asix_get_drvinfo (struct net_device *net,
2e55cc72
DB		 454 struct ethtool_drvinfo *info)
455{
456 /* Inherit standard device info */
457 usbnet_get_drvinfo(net, info);
458 info->eedump_len = 0x3e;
459}
460
48b1be6a 461static int asix_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
2e55cc72
DB		 462{
463 struct usbnet *dev = netdev_priv(net);
464
465 return mii_ethtool_gset(&dev->mii,cmd);
466}
467
48b1be6a 468static int asix_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
2e55cc72
DB		 469{
470 struct usbnet *dev = netdev_priv(net);
471
472 return mii_ethtool_sset(&dev->mii,cmd);
473}
474
475/* We need to override some ethtool_ops so we require our
476 own structure so we don't interfere with other usbnet
477 devices that may be connected at the same time. */
48b1be6a
DH		 478static struct ethtool_ops ax88172_ethtool_ops = {
479 .get_drvinfo = asix_get_drvinfo,
2e55cc72
DB		 480 .get_link = ethtool_op_get_link,
481 .get_msglevel = usbnet_get_msglevel,
482 .set_msglevel = usbnet_set_msglevel,
48b1be6a
DH		 483 .get_wol = asix_get_wol,
484 .set_wol = asix_set_wol,
485 .get_eeprom_len = asix_get_eeprom_len,
486 .get_eeprom = asix_get_eeprom,
487 .get_settings = asix_get_settings,
488 .set_settings = asix_set_settings,
2e55cc72
DB		 489};
490
48b1be6a 491static int asix_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
2e55cc72
DB		 492{
493 struct usbnet *dev = netdev_priv(net);
494
495 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
496}
497
48b1be6a 498static int ax88172_bind(struct usbnet *dev, struct usb_interface *intf)
2e55cc72
DB		 499{
500 int ret = 0;
501 void *buf;
502 int i;
503 unsigned long gpio_bits = dev->driver_info->data;
504
505 usbnet_get_endpoints(dev,intf);
506
507 buf = kmalloc(ETH_ALEN, GFP_KERNEL);
508 if(!buf) {
509 ret = -ENOMEM;
510 goto out1;
511 }
512
513 /* Toggle the GPIOs in a manufacturer/model specific way */
514 for (i = 2; i >= 0; i--) {
48b1be6a 515 if ((ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS,
2e55cc72
DB		 516 (gpio_bits >> (i * 8)) & 0xff, 0, 0,
517 buf)) < 0)
518 goto out2;
519 msleep(5);
520 }
521
48b1be6a 522 if ((ret = asix_write_rx_ctl(dev,0x80)) < 0)
2e55cc72 523 goto out2;
2e55cc72
DB		 524
525 /* Get the MAC address */
526 memset(buf, 0, ETH_ALEN);
48b1be6a 527 if ((ret = asix_read_cmd(dev, AX_CMD_READ_NODE_ID,
2e55cc72
DB		 528 0, 0, 6, buf)) < 0) {
529 dbg("read AX_CMD_READ_NODE_ID failed: %d", ret);
530 goto out2;
531 }
532 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
533
2e55cc72
DB		 534 /* Initialize MII structure */
535 dev->mii.dev = dev->net;
48b1be6a
DH		 536 dev->mii.mdio_read = asix_mdio_read;
537 dev->mii.mdio_write = asix_mdio_write;
2e55cc72
DB		 538 dev->mii.phy_id_mask = 0x3f;
539 dev->mii.reg_num_mask = 0x1f;
48b1be6a
DH		 540 dev->mii.phy_id = asix_get_phyid(dev);
541 dev->net->do_ioctl = asix_ioctl;
2e55cc72 542
48b1be6a
DH		 543 dev->net->set_multicast_list = asix_set_multicast;
544 dev->net->ethtool_ops = &ax88172_ethtool_ops;
2e55cc72 545
48b1be6a
DH		 546 asix_mdio_write_le(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
547 asix_mdio_write_le(dev->net, dev->mii.phy_id, MII_ADVERTISE,
2e55cc72
DB		 548 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
549 mii_nway_restart(&dev->mii);
550
551 return 0;
552out2:
553 kfree(buf);
554out1:
555 return ret;
556}
557
558static struct ethtool_ops ax88772_ethtool_ops = {
48b1be6a 559 .get_drvinfo = asix_get_drvinfo,
2e55cc72
DB		 560 .get_link = ethtool_op_get_link,
561 .get_msglevel = usbnet_get_msglevel,
562 .set_msglevel = usbnet_set_msglevel,
48b1be6a
DH		 563 .get_wol = asix_get_wol,
564 .set_wol = asix_set_wol,
565 .get_eeprom_len = asix_get_eeprom_len,
566 .get_eeprom = asix_get_eeprom,
567 .get_settings = asix_get_settings,
568 .set_settings = asix_set_settings,
2e55cc72
DB		 569};
570
571static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
572{
573 int ret;
574 void *buf;
575
576 usbnet_get_endpoints(dev,intf);
577
578 buf = kmalloc(6, GFP_KERNEL);
579 if(!buf) {
580 dbg ("Cannot allocate memory for buffer");
581 ret = -ENOMEM;
582 goto out1;
583 }
584
48b1be6a 585 if ((ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS,
2e55cc72
DB		 586 0x00B0, 0, 0, buf)) < 0)
587 goto out2;
588
589 msleep(5);
48b1be6a 590 if ((ret = asix_write_cmd(dev, AX_CMD_SW_PHY_SELECT,
2e55cc72
DB		 591 0x0001, 0, 0, buf)) < 0) {
592 dbg("Select PHY #1 failed: %d", ret);
593 goto out2;
594 }
595
48b1be6a 596 if ((ret = asix_sw_reset(dev, AX_SWRESET_IPPD)) < 0)
2e55cc72 597 goto out2;
2e55cc72
DB		 598
599 msleep(150);
48b1be6a 600 if ((ret = asix_sw_reset(dev, AX_SWRESET_CLEAR)) < 0)
2e55cc72 601 goto out2;
2e55cc72
DB		 602
603 msleep(150);
48b1be6a 604 if ((ret = asix_sw_reset(dev, AX_SWRESET_IPRL | AX_SWRESET_PRL)) < 0)
2e55cc72 605 goto out2;
2e55cc72
DB		 606
607 msleep(150);
48b1be6a 608 if ((ret = asix_write_rx_ctl(dev, 0x00)) < 0)
2e55cc72 609 goto out2;
2e55cc72
DB		 610
611 /* Get the MAC address */
612 memset(buf, 0, ETH_ALEN);
48b1be6a 613 if ((ret = asix_read_cmd(dev, AX88772_CMD_READ_NODE_ID,
2e55cc72
DB		 614 0, 0, ETH_ALEN, buf)) < 0) {
615 dbg("Failed to read MAC address: %d", ret);
616 goto out2;
617 }
618 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
619
48b1be6a 620 if ((ret = asix_set_sw_mii(dev)) < 0)
2e55cc72 621 goto out2;
2e55cc72 622
48b1be6a 623 if (((ret = asix_read_cmd(dev, AX_CMD_READ_MII_REG,
2e55cc72
DB		 624 0x0010, 2, 2, buf)) < 0)
625 || (*((u16 *)buf) != 0x003b)) {
626 dbg("Read PHY register 2 must be 0x3b00: %d", ret);
627 goto out2;
628 }
629
630 /* Initialize MII structure */
631 dev->mii.dev = dev->net;
48b1be6a
DH		 632 dev->mii.mdio_read = asix_mdio_read;
633 dev->mii.mdio_write = asix_mdio_write;
2e55cc72
DB		 634 dev->mii.phy_id_mask = 0xff;
635 dev->mii.reg_num_mask = 0xff;
48b1be6a
DH		 636 dev->net->do_ioctl = asix_ioctl;
637 dev->mii.phy_id = asix_get_phyid(dev);
2e55cc72 638
48b1be6a 639 if ((ret = asix_sw_reset(dev, AX_SWRESET_PRL)) < 0)
2e55cc72 640 goto out2;
2e55cc72 641
2e55cc72 642 msleep(150);
48b1be6a
DH		 643
644 if ((ret = asix_sw_reset(dev, AX_SWRESET_IPRL | AX_SWRESET_PRL)) < 0)
2e55cc72 645 goto out2;
2e55cc72 646
48b1be6a 647 msleep(150);
2e55cc72 648
48b1be6a 649 dev->net->set_multicast_list = asix_set_multicast;
2e55cc72
DB		 650 dev->net->ethtool_ops = &ax88772_ethtool_ops;
651
48b1be6a
DH		 652 asix_mdio_write_le(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
653 asix_mdio_write_le(dev->net, dev->mii.phy_id, MII_ADVERTISE,
2e55cc72
DB		 654 ADVERTISE_ALL | ADVERTISE_CSMA);
655 mii_nway_restart(&dev->mii);
656
48b1be6a 657 if ((ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE,
2e55cc72
DB		 658 AX88772_MEDIUM_DEFAULT, 0, 0, buf)) < 0) {
659 dbg("Write medium mode register: %d", ret);
660 goto out2;
661 }
662
48b1be6a 663 if ((ret = asix_write_cmd(dev, AX_CMD_WRITE_IPG0,
2e55cc72
DB		 664 AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
665 AX88772_IPG2_DEFAULT, 0, buf)) < 0) {
666 dbg("Write IPG,IPG1,IPG2 failed: %d", ret);
667 goto out2;
668 }
48b1be6a 669 if ((ret = asix_set_hw_mii(dev)) < 0)
2e55cc72 670 goto out2;
2e55cc72
DB		 671
672 /* Set RX_CTL to default values with 2k buffer, and enable cactus */
48b1be6a 673 if ((ret = asix_write_rx_ctl(dev, 0x0088)) < 0)
2e55cc72 674 goto out2;
2e55cc72
DB		 675
676 kfree(buf);
677
678 /* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
679 if (dev->driver_info->flags & FLAG_FRAMING_AX) {
680 /* hard_mtu is still the default - the device does not support
681 jumbo eth frames */
682 dev->rx_urb_size = 2048;
683 }
684
685 return 0;
686
687out2:
688 kfree(buf);
689out1:
690 return ret;
691}
692
693static int ax88772_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
694{
695 u8 *head;
696 u32 header;
697 char *packet;
698 struct sk_buff *ax_skb;
699 u16 size;
700
701 head = (u8 *) skb->data;
702 memcpy(&header, head, sizeof(header));
703 le32_to_cpus(&header);
704 packet = head + sizeof(header);
705
706 skb_pull(skb, 4);
707
708 while (skb->len > 0) {
709 if ((short)(header & 0x0000ffff) !=
710 ~((short)((header & 0xffff0000) >> 16))) {
711 devdbg(dev,"header length data is error");
712 }
713 /* get the packet length */
714 size = (u16) (header & 0x0000ffff);
715
716 if ((skb->len) - ((size + 1) & 0xfffe) == 0)
717 return 2;
718 if (size > ETH_FRAME_LEN) {
719 devdbg(dev,"invalid rx length %d", size);
720 return 0;
721 }
722 ax_skb = skb_clone(skb, GFP_ATOMIC);
723 if (ax_skb) {
724 ax_skb->len = size;
725 ax_skb->data = packet;
726 ax_skb->tail = packet + size;
727 usbnet_skb_return(dev, ax_skb);
728 } else {
729 return 0;
730 }
731
732 skb_pull(skb, (size + 1) & 0xfffe);
733
734 if (skb->len == 0)
735 break;
736
737 head = (u8 *) skb->data;
738 memcpy(&header, head, sizeof(header));
739 le32_to_cpus(&header);
740 packet = head + sizeof(header);
741 skb_pull(skb, 4);
742 }
743
744 if (skb->len < 0) {
745 devdbg(dev,"invalid rx length %d", skb->len);
746 return 0;
747 }
748 return 1;
749}
750
751static struct sk_buff *ax88772_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
55016f10 752 gfp_t flags)
2e55cc72
DB		 753{
754 int padlen;
755 int headroom = skb_headroom(skb);
756 int tailroom = skb_tailroom(skb);
757 u32 packet_len;
758 u32 padbytes = 0xffff0000;
759
760 padlen = ((skb->len + 4) % 512) ? 0 : 4;
761
762 if ((!skb_cloned(skb))
763 && ((headroom + tailroom) >= (4 + padlen))) {
764 if ((headroom < 4) || (tailroom < padlen)) {
765 skb->data = memmove(skb->head + 4, skb->data, skb->len);
766 skb->tail = skb->data + skb->len;
767 }
768 } else {
769 struct sk_buff *skb2;
770 skb2 = skb_copy_expand(skb, 4, padlen, flags);
771 dev_kfree_skb_any(skb);
772 skb = skb2;
773 if (!skb)
774 return NULL;
775 }
776
777 skb_push(skb, 4);
778 packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
779 memcpy(skb->data, &packet_len, sizeof(packet_len));
780
781 if ((skb->len % 512) == 0) {
782 memcpy( skb->tail, &padbytes, sizeof(padbytes));
783 skb_put(skb, sizeof(padbytes));
784 }
785 return skb;
786}
787
788static int ax88772_link_reset(struct usbnet *dev)
789{
790 u16 lpa;
791 u16 adv;
792 u16 res;
793 u16 mode;
794
795 mode = AX88772_MEDIUM_DEFAULT;
48b1be6a
DH		 796 lpa = asix_mdio_read_le(dev->net, dev->mii.phy_id, MII_LPA);
797 adv = asix_mdio_read_le(dev->net, dev->mii.phy_id, MII_ADVERTISE);
2e55cc72
DB		 798 res = mii_nway_result(lpa|adv);
799
800 if ((res & LPA_DUPLEX) == 0)
801 mode &= ~AX88772_MEDIUM_FULL_DUPLEX;
802 if ((res & LPA_100) == 0)
803 mode &= ~AX88772_MEDIUM_100MB;
48b1be6a 804 asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
2e55cc72
DB		 805
806 return 0;
807}
808
809static const struct driver_info ax8817x_info = {
810 .description = "ASIX AX8817x USB 2.0 Ethernet",
48b1be6a
DH		 811 .bind = ax88172_bind,
812 .status = asix_status,
2e55cc72
DB		 813 .link_reset = ax88172_link_reset,
814 .reset = ax88172_link_reset,
815 .flags = FLAG_ETHER,
816 .data = 0x00130103,
817};
818
819static const struct driver_info dlink_dub_e100_info = {
820 .description = "DLink DUB-E100 USB Ethernet",
48b1be6a
DH		 821 .bind = ax88172_bind,
822 .status = asix_status,
2e55cc72
DB		 823 .link_reset = ax88172_link_reset,
824 .reset = ax88172_link_reset,
825 .flags = FLAG_ETHER,
826 .data = 0x009f9d9f,
827};
828
829static const struct driver_info netgear_fa120_info = {
830 .description = "Netgear FA-120 USB Ethernet",
48b1be6a
DH		 831 .bind = ax88172_bind,
832 .status = asix_status,
2e55cc72
DB		 833 .link_reset = ax88172_link_reset,
834 .reset = ax88172_link_reset,
835 .flags = FLAG_ETHER,
836 .data = 0x00130103,
837};
838
839static const struct driver_info hawking_uf200_info = {
840 .description = "Hawking UF200 USB Ethernet",
48b1be6a
DH		 841 .bind = ax88172_bind,
842 .status = asix_status,
2e55cc72
DB		 843 .link_reset = ax88172_link_reset,
844 .reset = ax88172_link_reset,
845 .flags = FLAG_ETHER,
846 .data = 0x001f1d1f,
847};
848
849static const struct driver_info ax88772_info = {
850 .description = "ASIX AX88772 USB 2.0 Ethernet",
851 .bind = ax88772_bind,
48b1be6a 852 .status = asix_status,
2e55cc72
DB		 853 .link_reset = ax88772_link_reset,
854 .reset = ax88772_link_reset,
855 .flags = FLAG_ETHER | FLAG_FRAMING_AX,
856 .rx_fixup = ax88772_rx_fixup,
857 .tx_fixup = ax88772_tx_fixup,
2e55cc72
DB		 858};
859
860static const struct usb_device_id products [] = {
861{
862 // Linksys USB200M
863 USB_DEVICE (0x077b, 0x2226),
864 .driver_info = (unsigned long) &ax8817x_info,
865}, {
866 // Netgear FA120
867 USB_DEVICE (0x0846, 0x1040),
868 .driver_info = (unsigned long) &netgear_fa120_info,
869}, {
870 // DLink DUB-E100
871 USB_DEVICE (0x2001, 0x1a00),
872 .driver_info = (unsigned long) &dlink_dub_e100_info,
873}, {
874 // Intellinet, ST Lab USB Ethernet
875 USB_DEVICE (0x0b95, 0x1720),
876 .driver_info = (unsigned long) &ax8817x_info,
877}, {
878 // Hawking UF200, TrendNet TU2-ET100
879 USB_DEVICE (0x07b8, 0x420a),
880 .driver_info = (unsigned long) &hawking_uf200_info,
881}, {
882 // Billionton Systems, USB2AR
883 USB_DEVICE (0x08dd, 0x90ff),
884 .driver_info = (unsigned long) &ax8817x_info,
885}, {
886 // ATEN UC210T
887 USB_DEVICE (0x0557, 0x2009),
888 .driver_info = (unsigned long) &ax8817x_info,
889}, {
890 // Buffalo LUA-U2-KTX
891 USB_DEVICE (0x0411, 0x003d),
892 .driver_info = (unsigned long) &ax8817x_info,
893}, {
894 // Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
895 USB_DEVICE (0x6189, 0x182d),
896 .driver_info = (unsigned long) &ax8817x_info,
897}, {
898 // corega FEther USB2-TX
899 USB_DEVICE (0x07aa, 0x0017),
900 .driver_info = (unsigned long) &ax8817x_info,
901}, {
902 // Surecom EP-1427X-2
903 USB_DEVICE (0x1189, 0x0893),
904 .driver_info = (unsigned long) &ax8817x_info,
905}, {
906 // goodway corp usb gwusb2e
907 USB_DEVICE (0x1631, 0x6200),
908 .driver_info = (unsigned long) &ax8817x_info,
909}, {
910 // ASIX AX88772 10/100
911 USB_DEVICE (0x0b95, 0x7720),
912 .driver_info = (unsigned long) &ax88772_info,
7327413c
EW		 913}, {
914 // ASIX AX88178 10/100/1000
915 USB_DEVICE (0x0b95, 0x1780),
916 .driver_info = (unsigned long) &ax88772_info,
5e0f76c6
DH		 917}, {
918 // Linksys USB200M Rev 2
919 USB_DEVICE (0x13b1, 0x0018),
920 .driver_info = (unsigned long) &ax88772_info,
5732ce84
DH		 921}, {
922 // 0Q0 cable ethernet
923 USB_DEVICE (0x1557, 0x7720),
924 .driver_info = (unsigned long) &ax88772_info,
2e55cc72
DB		 925},
926 { }, // END
927};
928MODULE_DEVICE_TABLE(usb, products);
929
930static struct usb_driver asix_driver = {
2e55cc72
DB		 931 .name = "asix",
932 .id_table = products,
933 .probe = usbnet_probe,
934 .suspend = usbnet_suspend,
935 .resume = usbnet_resume,
936 .disconnect = usbnet_disconnect,
937};
938
939static int __init asix_init(void)
940{
941 return usb_register(&asix_driver);
942}
943module_init(asix_init);
944
945static void __exit asix_exit(void)
946{
947 usb_deregister(&asix_driver);
948}
949module_exit(asix_exit);
950
951MODULE_AUTHOR("David Hollis");
952MODULE_DESCRIPTION("ASIX AX8817X based USB 2.0 Ethernet Devices");
953MODULE_LICENSE("GPL");
954
Linux kernel - Deliverables
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