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WorkStruct: Pass the work_struct pointer instead of context data
[net-next-2.6.git] / drivers / usb / net / pegasus.c
CommitLineData
1da177e4
LT		 1/*
2 * Copyright (c) 1999-2005 Petko Manolov (petkan@users.sourceforge.net)
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * ChangeLog:
9 * .... Most of the time spent on reading sources & docs.
10 * v0.2.x First official release for the Linux kernel.
11 * v0.3.0 Beutified and structured, some bugs fixed.
12 * v0.3.x URBifying bulk requests and bugfixing. First relatively
13 * stable release. Still can touch device's registers only
14 * from top-halves.
15 * v0.4.0 Control messages remained unurbified are now URBs.
16 * Now we can touch the HW at any time.
17 * v0.4.9 Control urbs again use process context to wait. Argh...
18 * Some long standing bugs (enable_net_traffic) fixed.
19 * Also nasty trick about resubmiting control urb from
20 * interrupt context used. Please let me know how it
21 * behaves. Pegasus II support added since this version.
22 * TODO: suppressing HCD warnings spewage on disconnect.
23 * v0.4.13 Ethernet address is now set at probe(), not at open()
24 * time as this seems to break dhcpd.
25 * v0.5.0 branch to 2.5.x kernels
26 * v0.5.1 ethtool support added
27 * v0.5.5 rx socket buffers are in a pool and the their allocation
28 * is out of the interrupt routine.
29 */
30
1da177e4
LT		 31#include <linux/sched.h>
32#include <linux/slab.h>
33#include <linux/init.h>
34#include <linux/delay.h>
35#include <linux/netdevice.h>
36#include <linux/etherdevice.h>
37#include <linux/ethtool.h>
38#include <linux/mii.h>
39#include <linux/usb.h>
40#include <linux/module.h>
41#include <asm/byteorder.h>
42#include <asm/uaccess.h>
43#include "pegasus.h"
44
45/*
46 * Version Information
47 */
37cf3477 48#define DRIVER_VERSION "v0.6.14 (2006/09/27)"
1da177e4
LT		 49#define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
50#define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
51
52static const char driver_name[] = "pegasus";
53
54#undef PEGASUS_WRITE_EEPROM
55#define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
56 BMSR_100FULL | BMSR_ANEGCAPABLE)
57
58static int loopback = 0;
59static int mii_mode = 0;
a4f81a61 60static char *devid=NULL;
1da177e4
LT		 61
62static struct usb_eth_dev usb_dev_id[] = {
63#define PEGASUS_DEV(pn, vid, pid, flags) \
64 {.name = pn, .vendor = vid, .device = pid, .private = flags},
65#include "pegasus.h"
66#undef PEGASUS_DEV
a4f81a61 67 {NULL, 0, 0, 0},
1da177e4
LT		 68 {NULL, 0, 0, 0}
69};
70
71static struct usb_device_id pegasus_ids[] = {
72#define PEGASUS_DEV(pn, vid, pid, flags) \
73 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
74#include "pegasus.h"
75#undef PEGASUS_DEV
a4f81a61 76 {},
1da177e4
LT		 77 {}
78};
79
80MODULE_AUTHOR(DRIVER_AUTHOR);
81MODULE_DESCRIPTION(DRIVER_DESC);
82MODULE_LICENSE("GPL");
83module_param(loopback, bool, 0);
84module_param(mii_mode, bool, 0);
a4f81a61 85module_param(devid, charp, 0);
1da177e4
LT		 86MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
87MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
a4f81a61 88MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
1da177e4
LT		 89
90/* use ethtool to change the level for any given device */
91static int msg_level = -1;
92module_param (msg_level, int, 0);
93MODULE_PARM_DESC (msg_level, "Override default message level");
94
95MODULE_DEVICE_TABLE(usb, pegasus_ids);
96
97static int update_eth_regs_async(pegasus_t *);
98/* Aargh!!! I _really_ hate such tweaks */
7d12e780 99static void ctrl_callback(struct urb *urb)
1da177e4
LT		 100{
101 pegasus_t *pegasus = urb->context;
102
103 if (!pegasus)
104 return;
105
106 switch (urb->status) {
107 case 0:
108 if (pegasus->flags & ETH_REGS_CHANGE) {
109 pegasus->flags &= ~ETH_REGS_CHANGE;
110 pegasus->flags |= ETH_REGS_CHANGED;
111 update_eth_regs_async(pegasus);
112 return;
113 }
114 break;
115 case -EINPROGRESS:
116 return;
117 case -ENOENT:
118 break;
119 default:
120 if (netif_msg_drv(pegasus))
4a1728a2 121 dev_dbg(&pegasus->intf->dev, "%s, status %d\n",
1da177e4
LT		 122 __FUNCTION__, urb->status);
123 }
124 pegasus->flags &= ~ETH_REGS_CHANGED;
125 wake_up(&pegasus->ctrl_wait);
126}
127
128static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
129 void *data)
130{
131 int ret;
132 char *buffer;
133 DECLARE_WAITQUEUE(wait, current);
134
135 buffer = kmalloc(size, GFP_KERNEL);
136 if (!buffer) {
137 if (netif_msg_drv(pegasus))
138 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
139 __FUNCTION__);
140 return -ENOMEM;
141 }
142 add_wait_queue(&pegasus->ctrl_wait, &wait);
143 set_current_state(TASK_UNINTERRUPTIBLE);
144 while (pegasus->flags & ETH_REGS_CHANGED)
145 schedule();
146 remove_wait_queue(&pegasus->ctrl_wait, &wait);
147 set_current_state(TASK_RUNNING);
148
149 pegasus->dr.bRequestType = PEGASUS_REQT_READ;
150 pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
151 pegasus->dr.wValue = cpu_to_le16(0);
152 pegasus->dr.wIndex = cpu_to_le16p(&indx);
153 pegasus->dr.wLength = cpu_to_le16p(&size);
154 pegasus->ctrl_urb->transfer_buffer_length = size;
155
156 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
157 usb_rcvctrlpipe(pegasus->usb, 0),
158 (char *) &pegasus->dr,
159 buffer, size, ctrl_callback, pegasus);
160
161 add_wait_queue(&pegasus->ctrl_wait, &wait);
162 set_current_state(TASK_UNINTERRUPTIBLE);
163
164 /* using ATOMIC, we'd never wake up if we slept */
165 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
955a2608
DB		 166 if (ret == -ENODEV)
167 netif_device_detach(pegasus->net);
1da177e4
LT		 168 if (netif_msg_drv(pegasus))
169 dev_err(&pegasus->intf->dev, "%s, status %d\n",
170 __FUNCTION__, ret);
171 goto out;
172 }
173
174 schedule();
175out:
176 remove_wait_queue(&pegasus->ctrl_wait, &wait);
177 memcpy(data, buffer, size);
178 kfree(buffer);
179
180 return ret;
181}
182
183static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
184 void *data)
185{
186 int ret;
187 char *buffer;
188 DECLARE_WAITQUEUE(wait, current);
189
190 buffer = kmalloc(size, GFP_KERNEL);
191 if (!buffer) {
192 if (netif_msg_drv(pegasus))
193 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
194 __FUNCTION__);
195 return -ENOMEM;
196 }
197 memcpy(buffer, data, size);
198
199 add_wait_queue(&pegasus->ctrl_wait, &wait);
200 set_current_state(TASK_UNINTERRUPTIBLE);
201 while (pegasus->flags & ETH_REGS_CHANGED)
202 schedule();
203 remove_wait_queue(&pegasus->ctrl_wait, &wait);
204 set_current_state(TASK_RUNNING);
205
206 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
207 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
208 pegasus->dr.wValue = cpu_to_le16(0);
209 pegasus->dr.wIndex = cpu_to_le16p(&indx);
210 pegasus->dr.wLength = cpu_to_le16p(&size);
211 pegasus->ctrl_urb->transfer_buffer_length = size;
212
213 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
214 usb_sndctrlpipe(pegasus->usb, 0),
215 (char *) &pegasus->dr,
216 buffer, size, ctrl_callback, pegasus);
217
218 add_wait_queue(&pegasus->ctrl_wait, &wait);
219 set_current_state(TASK_UNINTERRUPTIBLE);
220
221 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
955a2608
DB		 222 if (ret == -ENODEV)
223 netif_device_detach(pegasus->net);
1da177e4
LT		 224 if (netif_msg_drv(pegasus))
225 dev_err(&pegasus->intf->dev, "%s, status %d\n",
226 __FUNCTION__, ret);
227 goto out;
228 }
229
230 schedule();
231out:
232 remove_wait_queue(&pegasus->ctrl_wait, &wait);
233 kfree(buffer);
234
235 return ret;
236}
237
238static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
239{
240 int ret;
241 char *tmp;
242 DECLARE_WAITQUEUE(wait, current);
243
244 tmp = kmalloc(1, GFP_KERNEL);
245 if (!tmp) {
246 if (netif_msg_drv(pegasus))
247 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
248 __FUNCTION__);
249 return -ENOMEM;
250 }
251 memcpy(tmp, &data, 1);
252 add_wait_queue(&pegasus->ctrl_wait, &wait);
253 set_current_state(TASK_UNINTERRUPTIBLE);
254 while (pegasus->flags & ETH_REGS_CHANGED)
255 schedule();
256 remove_wait_queue(&pegasus->ctrl_wait, &wait);
257 set_current_state(TASK_RUNNING);
258
259 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
260 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
261 pegasus->dr.wValue = cpu_to_le16(data);
262 pegasus->dr.wIndex = cpu_to_le16p(&indx);
263 pegasus->dr.wLength = cpu_to_le16(1);
264 pegasus->ctrl_urb->transfer_buffer_length = 1;
265
266 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
267 usb_sndctrlpipe(pegasus->usb, 0),
268 (char *) &pegasus->dr,
016534cf 269 tmp, 1, ctrl_callback, pegasus);
1da177e4
LT		 270
271 add_wait_queue(&pegasus->ctrl_wait, &wait);
272 set_current_state(TASK_UNINTERRUPTIBLE);
273
274 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
955a2608
DB		 275 if (ret == -ENODEV)
276 netif_device_detach(pegasus->net);
1da177e4
LT		 277 if (netif_msg_drv(pegasus))
278 dev_err(&pegasus->intf->dev, "%s, status %d\n",
279 __FUNCTION__, ret);
280 goto out;
281 }
282
283 schedule();
284out:
285 remove_wait_queue(&pegasus->ctrl_wait, &wait);
286 kfree(tmp);
287
288 return ret;
289}
290
291static int update_eth_regs_async(pegasus_t * pegasus)
292{
293 int ret;
294
295 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
296 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
297 pegasus->dr.wValue = 0;
298 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
299 pegasus->dr.wLength = cpu_to_le16(3);
300 pegasus->ctrl_urb->transfer_buffer_length = 3;
301
302 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
303 usb_sndctrlpipe(pegasus->usb, 0),
304 (char *) &pegasus->dr,
305 pegasus->eth_regs, 3, ctrl_callback, pegasus);
306
955a2608
DB		 307 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
308 if (ret == -ENODEV)
309 netif_device_detach(pegasus->net);
1da177e4
LT		 310 if (netif_msg_drv(pegasus))
311 dev_err(&pegasus->intf->dev, "%s, status %d\n",
312 __FUNCTION__, ret);
955a2608 313 }
1da177e4
LT		 314
315 return ret;
316}
317
318static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
319{
320 int i;
321 __u8 data[4] = { phy, 0, 0, indx };
322 __le16 regdi;
323 int ret;
324
4a1728a2
PM		 325 set_register(pegasus, PhyCtrl, 0);
326 set_registers(pegasus, PhyAddr, sizeof (data), data);
327 set_register(pegasus, PhyCtrl, (indx | PHY_READ));
1da177e4
LT		 328 for (i = 0; i < REG_TIMEOUT; i++) {
329 ret = get_registers(pegasus, PhyCtrl, 1, data);
7e713b82
DB		 330 if (ret == -ESHUTDOWN)
331 goto fail;
1da177e4
LT		 332 if (data[0] & PHY_DONE)
333 break;
334 }
335 if (i < REG_TIMEOUT) {
336 ret = get_registers(pegasus, PhyData, 2, &regdi);
337 *regd = le16_to_cpu(regdi);
4a1728a2 338 return ret;
1da177e4 339 }
7e713b82 340fail:
1da177e4 341 if (netif_msg_drv(pegasus))
37cf3477 342 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
1da177e4 343
4a1728a2 344 return ret;
1da177e4
LT		 345}
346
347static int mdio_read(struct net_device *dev, int phy_id, int loc)
348{
349 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
350 u16 res;
351
352 read_mii_word(pegasus, phy_id, loc, &res);
353 return (int)res;
354}
355
356static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
357{
358 int i;
359 __u8 data[4] = { phy, 0, 0, indx };
360 int ret;
361
362 data[1] = (u8) regd;
363 data[2] = (u8) (regd >> 8);
4a1728a2
PM		 364 set_register(pegasus, PhyCtrl, 0);
365 set_registers(pegasus, PhyAddr, sizeof(data), data);
366 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
1da177e4
LT		 367 for (i = 0; i < REG_TIMEOUT; i++) {
368 ret = get_registers(pegasus, PhyCtrl, 1, data);
7e713b82
DB		 369 if (ret == -ESHUTDOWN)
370 goto fail;
1da177e4
LT		 371 if (data[0] & PHY_DONE)
372 break;
373 }
374 if (i < REG_TIMEOUT)
4a1728a2 375 return ret;
1da177e4 376
7e713b82 377fail:
1da177e4 378 if (netif_msg_drv(pegasus))
37cf3477 379 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
4a1728a2 380 return -ETIMEDOUT;
1da177e4
LT		 381}
382
383static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
384{
385 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
386
387 write_mii_word(pegasus, phy_id, loc, val);
388}
389
390static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
391{
392 int i;
393 __u8 tmp;
394 __le16 retdatai;
395 int ret;
396
4a1728a2
PM		 397 set_register(pegasus, EpromCtrl, 0);
398 set_register(pegasus, EpromOffset, index);
399 set_register(pegasus, EpromCtrl, EPROM_READ);
1da177e4
LT		 400
401 for (i = 0; i < REG_TIMEOUT; i++) {
402 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
403 if (tmp & EPROM_DONE)
404 break;
7e713b82
DB		 405 if (ret == -ESHUTDOWN)
406 goto fail;
1da177e4
LT		 407 }
408 if (i < REG_TIMEOUT) {
409 ret = get_registers(pegasus, EpromData, 2, &retdatai);
410 *retdata = le16_to_cpu(retdatai);
4a1728a2 411 return ret;
1da177e4
LT		 412 }
413
7e713b82 414fail:
1da177e4 415 if (netif_msg_drv(pegasus))
37cf3477 416 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
4a1728a2 417 return -ETIMEDOUT;
1da177e4
LT		 418}
419
420#ifdef PEGASUS_WRITE_EEPROM
421static inline void enable_eprom_write(pegasus_t * pegasus)
422{
423 __u8 tmp;
424 int ret;
425
4a1728a2
PM		 426 get_registers(pegasus, EthCtrl2, 1, &tmp);
427 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
1da177e4
LT		 428}
429
430static inline void disable_eprom_write(pegasus_t * pegasus)
431{
432 __u8 tmp;
433 int ret;
434
4a1728a2
PM		 435 get_registers(pegasus, EthCtrl2, 1, &tmp);
436 set_register(pegasus, EpromCtrl, 0);
437 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
1da177e4
LT		 438}
439
440static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
441{
442 int i;
443 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
444 int ret;
445
4a1728a2 446 set_registers(pegasus, EpromOffset, 4, d);
1da177e4 447 enable_eprom_write(pegasus);
4a1728a2
PM		 448 set_register(pegasus, EpromOffset, index);
449 set_registers(pegasus, EpromData, 2, &data);
450 set_register(pegasus, EpromCtrl, EPROM_WRITE);
1da177e4
LT		 451
452 for (i = 0; i < REG_TIMEOUT; i++) {
453 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
7e713b82
DB		 454 if (ret == -ESHUTDOWN)
455 goto fail;
1da177e4
LT		 456 if (tmp & EPROM_DONE)
457 break;
458 }
459 disable_eprom_write(pegasus);
460 if (i < REG_TIMEOUT)
4a1728a2 461 return ret;
7e713b82 462fail:
1da177e4 463 if (netif_msg_drv(pegasus))
37cf3477 464 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
4a1728a2 465 return -ETIMEDOUT;
1da177e4
LT		 466}
467#endif /* PEGASUS_WRITE_EEPROM */
468
469static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
470{
471 int i;
472 __u16 w16;
473
474 for (i = 0; i < 3; i++) {
475 read_eprom_word(pegasus, i, &w16);
476 ((__le16 *) id)[i] = cpu_to_le16p(&w16);
477 }
478}
479
480static void set_ethernet_addr(pegasus_t * pegasus)
481{
482 __u8 node_id[6];
1da177e4 483
37cf3477
PM		 484 if (pegasus->features & PEGASUS_II) {
485 get_registers(pegasus, 0x10, sizeof(node_id), node_id);
486 } else {
487 get_node_id(pegasus, node_id);
488 set_registers(pegasus, EthID, sizeof (node_id), node_id);
489 }
1da177e4
LT		 490 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
491}
492
493static inline int reset_mac(pegasus_t * pegasus)
494{
495 __u8 data = 0x8;
496 int i;
1da177e4 497
4a1728a2 498 set_register(pegasus, EthCtrl1, data);
1da177e4 499 for (i = 0; i < REG_TIMEOUT; i++) {
4a1728a2 500 get_registers(pegasus, EthCtrl1, 1, &data);
1da177e4
LT		 501 if (~data & 0x08) {
502 if (loopback & 1)
503 break;
504 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
4a1728a2 505 set_register(pegasus, Gpio1, 0x34);
1da177e4 506 else
4a1728a2
PM		 507 set_register(pegasus, Gpio1, 0x26);
508 set_register(pegasus, Gpio0, pegasus->features);
509 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
1da177e4
LT		 510 break;
511 }
512 }
513 if (i == REG_TIMEOUT)
4a1728a2 514 return -ETIMEDOUT;
1da177e4
LT		 515
516 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
517 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
4a1728a2
PM		 518 set_register(pegasus, Gpio0, 0x24);
519 set_register(pegasus, Gpio0, 0x26);
1da177e4
LT		 520 }
521 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
522 __u16 auxmode;
523 read_mii_word(pegasus, 3, 0x1b, &auxmode);
524 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
525 }
526
527 return 0;
528}
529
530static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
531{
532 __u16 linkpart;
533 __u8 data[4];
534 pegasus_t *pegasus = netdev_priv(dev);
535 int ret;
536
537 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
538 data[0] = 0xc9;
539 data[1] = 0;
540 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
541 data[1] |= 0x20; /* set full duplex */
542 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
543 data[1] |= 0x10; /* set 100 Mbps */
544 if (mii_mode)
545 data[1] = 0;
546 data[2] = (loopback & 1) ? 0x09 : 0x01;
547
548 memcpy(pegasus->eth_regs, data, sizeof (data));
549 ret = set_registers(pegasus, EthCtrl0, 3, data);
550
551 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
efafe6fb 552 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
1da177e4
LT		 553 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
554 u16 auxmode;
555 read_mii_word(pegasus, 0, 0x1b, &auxmode);
556 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
557 }
558
4a1728a2 559 return ret;
1da177e4
LT		 560}
561
562static void fill_skb_pool(pegasus_t * pegasus)
563{
564 int i;
565
566 for (i = 0; i < RX_SKBS; i++) {
567 if (pegasus->rx_pool[i])
568 continue;
569 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
570 /*
571 ** we give up if the allocation fail. the tasklet will be
572 ** rescheduled again anyway...
573 */
574 if (pegasus->rx_pool[i] == NULL)
575 return;
576 pegasus->rx_pool[i]->dev = pegasus->net;
577 skb_reserve(pegasus->rx_pool[i], 2);
578 }
579}
580
581static void free_skb_pool(pegasus_t * pegasus)
582{
583 int i;
584
585 for (i = 0; i < RX_SKBS; i++) {
586 if (pegasus->rx_pool[i]) {
587 dev_kfree_skb(pegasus->rx_pool[i]);
588 pegasus->rx_pool[i] = NULL;
589 }
590 }
591}
592
593static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
594{
595 int i;
596 struct sk_buff *skb;
597
598 for (i = 0; i < RX_SKBS; i++) {
599 if (likely(pegasus->rx_pool[i] != NULL)) {
600 skb = pegasus->rx_pool[i];
601 pegasus->rx_pool[i] = NULL;
602 return skb;
603 }
604 }
605 return NULL;
606}
607
7d12e780 608static void read_bulk_callback(struct urb *urb)
1da177e4
LT		 609{
610 pegasus_t *pegasus = urb->context;
611 struct net_device *net;
612 int rx_status, count = urb->actual_length;
613 u8 *buf = urb->transfer_buffer;
614 __u16 pkt_len;
615
616 if (!pegasus)
617 return;
618
619 net = pegasus->net;
620 if (!netif_device_present(net) || !netif_running(net))
621 return;
622
623 switch (urb->status) {
624 case 0:
625 break;
38e2bfc9 626 case -ETIME:
1da177e4
LT		 627 if (netif_msg_rx_err(pegasus))
628 pr_debug("%s: reset MAC\n", net->name);
629 pegasus->flags &= ~PEGASUS_RX_BUSY;
630 break;
631 case -EPIPE: /* stall, or disconnect from TT */
632 /* FIXME schedule work to clear the halt */
633 if (netif_msg_rx_err(pegasus))
634 printk(KERN_WARNING "%s: no rx stall recovery\n",
635 net->name);
636 return;
637 case -ENOENT:
638 case -ECONNRESET:
639 case -ESHUTDOWN:
640 if (netif_msg_ifdown(pegasus))
641 pr_debug("%s: rx unlink, %d\n", net->name, urb->status);
642 return;
643 default:
644 if (netif_msg_rx_err(pegasus))
645 pr_debug("%s: RX status %d\n", net->name, urb->status);
646 goto goon;
647 }
648
649 if (!count || count < 4)
650 goto goon;
651
652 rx_status = buf[count - 2];
653 if (rx_status & 0x1e) {
654 if (netif_msg_rx_err(pegasus))
655 pr_debug("%s: RX packet error %x\n",
656 net->name, rx_status);
657 pegasus->stats.rx_errors++;
658 if (rx_status & 0x06) // long or runt
659 pegasus->stats.rx_length_errors++;
660 if (rx_status & 0x08)
661 pegasus->stats.rx_crc_errors++;
662 if (rx_status & 0x10) // extra bits
663 pegasus->stats.rx_frame_errors++;
664 goto goon;
665 }
666 if (pegasus->chip == 0x8513) {
667 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
668 pkt_len &= 0x0fff;
669 pegasus->rx_skb->data += 2;
670 } else {
671 pkt_len = buf[count - 3] << 8;
672 pkt_len += buf[count - 4];
673 pkt_len &= 0xfff;
674 pkt_len -= 8;
675 }
676
a85a46f2
KV		 677 /*
678 * If the packet is unreasonably long, quietly drop it rather than
679 * kernel panicing by calling skb_put.
680 */
681 if (pkt_len > PEGASUS_MTU)
682 goto goon;
683
1da177e4
LT		 684 /*
685 * at this point we are sure pegasus->rx_skb != NULL
686 * so we go ahead and pass up the packet.
687 */
688 skb_put(pegasus->rx_skb, pkt_len);
689 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
690 netif_rx(pegasus->rx_skb);
691 pegasus->stats.rx_packets++;
692 pegasus->stats.rx_bytes += pkt_len;
693
694 if (pegasus->flags & PEGASUS_UNPLUG)
695 return;
696
697 spin_lock(&pegasus->rx_pool_lock);
698 pegasus->rx_skb = pull_skb(pegasus);
699 spin_unlock(&pegasus->rx_pool_lock);
700
701 if (pegasus->rx_skb == NULL)
702 goto tl_sched;
703goon:
704 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
705 usb_rcvbulkpipe(pegasus->usb, 1),
706 pegasus->rx_skb->data, PEGASUS_MTU + 8,
707 read_bulk_callback, pegasus);
955a2608
DB		 708 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
709 if (rx_status == -ENODEV)
710 netif_device_detach(pegasus->net);
711 else if (rx_status) {
1da177e4
LT		 712 pegasus->flags |= PEGASUS_RX_URB_FAIL;
713 goto tl_sched;
714 } else {
715 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
716 }
717
718 return;
719
720tl_sched:
721 tasklet_schedule(&pegasus->rx_tl);
722}
723
724static void rx_fixup(unsigned long data)
725{
726 pegasus_t *pegasus;
727 unsigned long flags;
955a2608 728 int status;
1da177e4
LT		 729
730 pegasus = (pegasus_t *) data;
731 if (pegasus->flags & PEGASUS_UNPLUG)
732 return;
733
734 spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
735 fill_skb_pool(pegasus);
736 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
737 if (pegasus->rx_skb)
738 goto try_again;
739 if (pegasus->rx_skb == NULL) {
740 pegasus->rx_skb = pull_skb(pegasus);
741 }
742 if (pegasus->rx_skb == NULL) {
743 if (netif_msg_rx_err(pegasus))
744 printk(KERN_WARNING "%s: low on memory\n",
745 pegasus->net->name);
746 tasklet_schedule(&pegasus->rx_tl);
747 goto done;
748 }
749 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
750 usb_rcvbulkpipe(pegasus->usb, 1),
751 pegasus->rx_skb->data, PEGASUS_MTU + 8,
752 read_bulk_callback, pegasus);
753try_again:
955a2608
DB		 754 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
755 if (status == -ENODEV)
756 netif_device_detach(pegasus->net);
757 else if (status) {
1da177e4
LT		 758 pegasus->flags |= PEGASUS_RX_URB_FAIL;
759 tasklet_schedule(&pegasus->rx_tl);
760 } else {
761 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
762 }
763done:
764 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
765}
766
7d12e780 767static void write_bulk_callback(struct urb *urb)
1da177e4
LT		 768{
769 pegasus_t *pegasus = urb->context;
770 struct net_device *net = pegasus->net;
771
772 if (!pegasus)
773 return;
774
775 if (!netif_device_present(net) || !netif_running(net))
776 return;
777
778 switch (urb->status) {
779 case -EPIPE:
780 /* FIXME schedule_work() to clear the tx halt */
781 netif_stop_queue(net);
782 if (netif_msg_tx_err(pegasus))
783 printk(KERN_WARNING "%s: no tx stall recovery\n",
784 net->name);
785 return;
786 case -ENOENT:
787 case -ECONNRESET:
788 case -ESHUTDOWN:
789 if (netif_msg_ifdown(pegasus))
790 pr_debug("%s: tx unlink, %d\n", net->name, urb->status);
791 return;
792 default:
793 if (netif_msg_tx_err(pegasus))
794 pr_info("%s: TX status %d\n", net->name, urb->status);
795 /* FALL THROUGH */
796 case 0:
797 break;
798 }
799
800 net->trans_start = jiffies;
801 netif_wake_queue(net);
802}
803
7d12e780 804static void intr_callback(struct urb *urb)
1da177e4
LT		 805{
806 pegasus_t *pegasus = urb->context;
807 struct net_device *net;
808 int status;
809
810 if (!pegasus)
811 return;
812 net = pegasus->net;
813
814 switch (urb->status) {
815 case 0:
816 break;
817 case -ECONNRESET: /* unlink */
818 case -ENOENT:
819 case -ESHUTDOWN:
820 return;
821 default:
822 /* some Pegasus-I products report LOTS of data
823 * toggle errors... avoid log spamming
824 */
825 if (netif_msg_timer(pegasus))
826 pr_debug("%s: intr status %d\n", net->name,
827 urb->status);
828 }
829
830 if (urb->actual_length >= 6) {
831 u8 * d = urb->transfer_buffer;
832
833 /* byte 0 == tx_status1, reg 2B */
834 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
835 |LATE_COL|JABBER_TIMEOUT)) {
836 pegasus->stats.tx_errors++;
837 if (d[0] & TX_UNDERRUN)
838 pegasus->stats.tx_fifo_errors++;
839 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
840 pegasus->stats.tx_aborted_errors++;
841 if (d[0] & LATE_COL)
842 pegasus->stats.tx_window_errors++;
843 }
844
845 /* d[5].LINK_STATUS lies on some adapters.
846 * d[0].NO_CARRIER kicks in only with failed TX.
847 * ... so monitoring with MII may be safest.
848 */
849 if (d[0] & NO_CARRIER)
850 netif_carrier_off(net);
851 else
852 netif_carrier_on(net);
853
854 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
855 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
856 }
857
858 status = usb_submit_urb(urb, SLAB_ATOMIC);
955a2608
DB		 859 if (status == -ENODEV)
860 netif_device_detach(pegasus->net);
1da177e4
LT		 861 if (status && netif_msg_timer(pegasus))
862 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
863 net->name, status);
864}
865
866static void pegasus_tx_timeout(struct net_device *net)
867{
868 pegasus_t *pegasus = netdev_priv(net);
869 if (netif_msg_timer(pegasus))
870 printk(KERN_WARNING "%s: tx timeout\n", net->name);
1da177e4
LT		 871 usb_unlink_urb(pegasus->tx_urb);
872 pegasus->stats.tx_errors++;
873}
874
875static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
876{
877 pegasus_t *pegasus = netdev_priv(net);
878 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
879 int res;
880 __u16 l16 = skb->len;
881
882 netif_stop_queue(net);
883
884 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
885 memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
886 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
887 usb_sndbulkpipe(pegasus->usb, 2),
888 pegasus->tx_buff, count,
889 write_bulk_callback, pegasus);
890 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
891 if (netif_msg_tx_err(pegasus))
892 printk(KERN_WARNING "%s: fail tx, %d\n",
893 net->name, res);
894 switch (res) {
895 case -EPIPE: /* stall, or disconnect from TT */
896 /* cleanup should already have been scheduled */
897 break;
898 case -ENODEV: /* disconnect() upcoming */
955a2608 899 netif_device_detach(pegasus->net);
1da177e4
LT		 900 break;
901 default:
902 pegasus->stats.tx_errors++;
903 netif_start_queue(net);
904 }
905 } else {
906 pegasus->stats.tx_packets++;
907 pegasus->stats.tx_bytes += skb->len;
908 net->trans_start = jiffies;
909 }
910 dev_kfree_skb(skb);
911
912 return 0;
913}
914
915static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
916{
917 return &((pegasus_t *) netdev_priv(dev))->stats;
918}
919
920static inline void disable_net_traffic(pegasus_t * pegasus)
921{
922 int tmp = 0;
1da177e4 923
4a1728a2 924 set_registers(pegasus, EthCtrl0, 2, &tmp);
1da177e4
LT		 925}
926
927static inline void get_interrupt_interval(pegasus_t * pegasus)
928{
929 __u8 data[2];
930
931 read_eprom_word(pegasus, 4, (__u16 *) data);
a85a46f2
KV		 932 if (pegasus->usb->speed != USB_SPEED_HIGH) {
933 if (data[1] < 0x80) {
934 if (netif_msg_timer(pegasus))
935 dev_info(&pegasus->intf->dev, "intr interval "
936 "changed from %ums to %ums\n",
937 data[1], 0x80);
938 data[1] = 0x80;
939#ifdef PEGASUS_WRITE_EEPROM
940 write_eprom_word(pegasus, 4, *(__u16 *) data);
1da177e4 941#endif
a85a46f2 942 }
1da177e4
LT		 943 }
944 pegasus->intr_interval = data[1];
945}
946
947static void set_carrier(struct net_device *net)
948{
949 pegasus_t *pegasus = netdev_priv(net);
950 u16 tmp;
951
a85a46f2 952 if (!read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
1da177e4 953 return;
a85a46f2 954
1da177e4
LT		 955 if (tmp & BMSR_LSTATUS)
956 netif_carrier_on(net);
957 else
958 netif_carrier_off(net);
959}
960
961static void free_all_urbs(pegasus_t * pegasus)
962{
963 usb_free_urb(pegasus->intr_urb);
964 usb_free_urb(pegasus->tx_urb);
965 usb_free_urb(pegasus->rx_urb);
966 usb_free_urb(pegasus->ctrl_urb);
967}
968
969static void unlink_all_urbs(pegasus_t * pegasus)
970{
971 usb_kill_urb(pegasus->intr_urb);
972 usb_kill_urb(pegasus->tx_urb);
973 usb_kill_urb(pegasus->rx_urb);
974 usb_kill_urb(pegasus->ctrl_urb);
975}
976
977static int alloc_urbs(pegasus_t * pegasus)
978{
979 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
980 if (!pegasus->ctrl_urb) {
981 return 0;
982 }
983 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
984 if (!pegasus->rx_urb) {
985 usb_free_urb(pegasus->ctrl_urb);
986 return 0;
987 }
988 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
989 if (!pegasus->tx_urb) {
990 usb_free_urb(pegasus->rx_urb);
991 usb_free_urb(pegasus->ctrl_urb);
992 return 0;
993 }
994 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
995 if (!pegasus->intr_urb) {
996 usb_free_urb(pegasus->tx_urb);
997 usb_free_urb(pegasus->rx_urb);
998 usb_free_urb(pegasus->ctrl_urb);
999 return 0;
1000 }
1001
1002 return 1;
1003}
1004
1005static int pegasus_open(struct net_device *net)
1006{
1007 pegasus_t *pegasus = netdev_priv(net);
1008 int res;
1009
1010 if (pegasus->rx_skb == NULL)
1011 pegasus->rx_skb = pull_skb(pegasus);
1012 /*
1013 ** Note: no point to free the pool. it is empty :-)
1014 */
1015 if (!pegasus->rx_skb)
1016 return -ENOMEM;
1017
1018 res = set_registers(pegasus, EthID, 6, net->dev_addr);
1019
1020 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
1021 usb_rcvbulkpipe(pegasus->usb, 1),
1022 pegasus->rx_skb->data, PEGASUS_MTU + 8,
1023 read_bulk_callback, pegasus);
1024 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
955a2608
DB		 1025 if (res == -ENODEV)
1026 netif_device_detach(pegasus->net);
1da177e4
LT		 1027 if (netif_msg_ifup(pegasus))
1028 pr_debug("%s: failed rx_urb, %d", net->name, res);
1029 goto exit;
1030 }
1031
1032 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
1033 usb_rcvintpipe(pegasus->usb, 3),
1034 pegasus->intr_buff, sizeof (pegasus->intr_buff),
1035 intr_callback, pegasus, pegasus->intr_interval);
1036 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
955a2608
DB		 1037 if (res == -ENODEV)
1038 netif_device_detach(pegasus->net);
1da177e4
LT		 1039 if (netif_msg_ifup(pegasus))
1040 pr_debug("%s: failed intr_urb, %d\n", net->name, res);
1041 usb_kill_urb(pegasus->rx_urb);
1042 goto exit;
1043 }
1044 if ((res = enable_net_traffic(net, pegasus->usb))) {
1045 if (netif_msg_ifup(pegasus))
1046 pr_debug("%s: can't enable_net_traffic() - %d\n",
1047 net->name, res);
1048 res = -EIO;
1049 usb_kill_urb(pegasus->rx_urb);
1050 usb_kill_urb(pegasus->intr_urb);
1051 free_skb_pool(pegasus);
1052 goto exit;
1053 }
1054 set_carrier(net);
1055 netif_start_queue(net);
1056 if (netif_msg_ifup(pegasus))
1057 pr_debug("%s: open\n", net->name);
1058 res = 0;
1059exit:
1060 return res;
1061}
1062
1063static int pegasus_close(struct net_device *net)
1064{
1065 pegasus_t *pegasus = netdev_priv(net);
1066
1067 netif_stop_queue(net);
1068 if (!(pegasus->flags & PEGASUS_UNPLUG))
1069 disable_net_traffic(pegasus);
1070 tasklet_kill(&pegasus->rx_tl);
1071 unlink_all_urbs(pegasus);
1072
1073 return 0;
1074}
1075
1076static void pegasus_get_drvinfo(struct net_device *dev,
1077 struct ethtool_drvinfo *info)
1078{
1079 pegasus_t *pegasus = netdev_priv(dev);
1080 strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1081 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1082 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1083}
1084
1085/* also handles three patterns of some kind in hardware */
1086#define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
1087
1088static void
1089pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1090{
1091 pegasus_t *pegasus = netdev_priv(dev);
1092
1093 wol->supported = WAKE_MAGIC | WAKE_PHY;
1094 wol->wolopts = pegasus->wolopts;
1095}
1096
1097static int
1098pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1099{
1100 pegasus_t *pegasus = netdev_priv(dev);
1101 u8 reg78 = 0x04;
1102
1103 if (wol->wolopts & ~WOL_SUPPORTED)
1104 return -EINVAL;
1105
1106 if (wol->wolopts & WAKE_MAGIC)
1107 reg78 |= 0x80;
1108 if (wol->wolopts & WAKE_PHY)
1109 reg78 |= 0x40;
1110 /* FIXME this 0x10 bit still needs to get set in the chip... */
1111 if (wol->wolopts)
1112 pegasus->eth_regs[0] |= 0x10;
1113 else
1114 pegasus->eth_regs[0] &= ~0x10;
1115 pegasus->wolopts = wol->wolopts;
1116 return set_register(pegasus, WakeupControl, reg78);
1117}
1118
1119static inline void pegasus_reset_wol(struct net_device *dev)
1120{
1121 struct ethtool_wolinfo wol;
1122
1123 memset(&wol, 0, sizeof wol);
1124 (void) pegasus_set_wol(dev, &wol);
1125}
1126
1127static int
1128pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1129{
1130 pegasus_t *pegasus;
1131
1132 if (in_atomic())
1133 return 0;
1134
1135 pegasus = netdev_priv(dev);
1136 mii_ethtool_gset(&pegasus->mii, ecmd);
1137
1138 return 0;
1139}
1140
1141static int
1142pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1143{
1144 pegasus_t *pegasus = netdev_priv(dev);
1145 return mii_ethtool_sset(&pegasus->mii, ecmd);
1146}
1147
1148static int pegasus_nway_reset(struct net_device *dev)
1149{
1150 pegasus_t *pegasus = netdev_priv(dev);
1151 return mii_nway_restart(&pegasus->mii);
1152}
1153
1154static u32 pegasus_get_link(struct net_device *dev)
1155{
1156 pegasus_t *pegasus = netdev_priv(dev);
1157 return mii_link_ok(&pegasus->mii);
1158}
1159
1160static u32 pegasus_get_msglevel(struct net_device *dev)
1161{
1162 pegasus_t *pegasus = netdev_priv(dev);
1163 return pegasus->msg_enable;
1164}
1165
1166static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1167{
1168 pegasus_t *pegasus = netdev_priv(dev);
1169 pegasus->msg_enable = v;
1170}
1171
1172static struct ethtool_ops ops = {
1173 .get_drvinfo = pegasus_get_drvinfo,
1174 .get_settings = pegasus_get_settings,
1175 .set_settings = pegasus_set_settings,
1176 .nway_reset = pegasus_nway_reset,
1177 .get_link = pegasus_get_link,
1178 .get_msglevel = pegasus_get_msglevel,
1179 .set_msglevel = pegasus_set_msglevel,
1180 .get_wol = pegasus_get_wol,
1181 .set_wol = pegasus_set_wol,
1182};
1183
1184static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1185{
1186 __u16 *data = (__u16 *) & rq->ifr_ifru;
1187 pegasus_t *pegasus = netdev_priv(net);
1188 int res;
1189
1190 switch (cmd) {
1191 case SIOCDEVPRIVATE:
1192 data[0] = pegasus->phy;
1193 case SIOCDEVPRIVATE + 1:
1194 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1195 res = 0;
1196 break;
1197 case SIOCDEVPRIVATE + 2:
1198 if (!capable(CAP_NET_ADMIN))
1199 return -EPERM;
1200 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1201 res = 0;
1202 break;
1203 default:
1204 res = -EOPNOTSUPP;
1205 }
1206 return res;
1207}
1208
1209static void pegasus_set_multicast(struct net_device *net)
1210{
1211 pegasus_t *pegasus = netdev_priv(net);
1212
1213 if (net->flags & IFF_PROMISC) {
1214 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1215 if (netif_msg_link(pegasus))
1216 pr_info("%s: Promiscuous mode enabled.\n", net->name);
ae0a97bf 1217 } else if (net->mc_count ||
1da177e4
LT		 1218 (net->flags & IFF_ALLMULTI)) {
1219 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1220 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1221 if (netif_msg_link(pegasus))
1222 pr_info("%s: set allmulti\n", net->name);
1223 } else {
1224 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1225 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1226 }
1227
1228 pegasus->flags |= ETH_REGS_CHANGE;
7d12e780 1229 ctrl_callback(pegasus->ctrl_urb);
1da177e4
LT		 1230}
1231
1232static __u8 mii_phy_probe(pegasus_t * pegasus)
1233{
1234 int i;
1235 __u16 tmp;
1236
1237 for (i = 0; i < 32; i++) {
1238 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1239 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1240 continue;
1241 else
1242 return i;
1243 }
1244
1245 return 0xff;
1246}
1247
1248static inline void setup_pegasus_II(pegasus_t * pegasus)
1249{
1250 __u8 data = 0xa5;
1da177e4 1251
4a1728a2
PM		 1252 set_register(pegasus, Reg1d, 0);
1253 set_register(pegasus, Reg7b, 1);
1da177e4
LT		 1254 mdelay(100);
1255 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
4a1728a2 1256 set_register(pegasus, Reg7b, 0);
1da177e4 1257 else
4a1728a2 1258 set_register(pegasus, Reg7b, 2);
1da177e4 1259
4a1728a2
PM		 1260 set_register(pegasus, 0x83, data);
1261 get_registers(pegasus, 0x83, 1, &data);
1da177e4
LT		 1262
1263 if (data == 0xa5) {
1264 pegasus->chip = 0x8513;
1265 } else {
1266 pegasus->chip = 0;
1267 }
1268
4a1728a2
PM		 1269 set_register(pegasus, 0x80, 0xc0);
1270 set_register(pegasus, 0x83, 0xff);
1271 set_register(pegasus, 0x84, 0x01);
1da177e4
LT		 1272
1273 if (pegasus->features & HAS_HOME_PNA && mii_mode)
4a1728a2 1274 set_register(pegasus, Reg81, 6);
1da177e4 1275 else
4a1728a2 1276 set_register(pegasus, Reg81, 2);
1da177e4
LT		 1277}
1278
1279
1280static struct workqueue_struct *pegasus_workqueue = NULL;
1281#define CARRIER_CHECK_DELAY (2 * HZ)
1282
1283static void check_carrier(void *data)
1284{
1285 pegasus_t *pegasus = data;
1286 set_carrier(pegasus->net);
1287 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1288 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1289 CARRIER_CHECK_DELAY);
1290 }
1291}
1292
1293static int pegasus_probe(struct usb_interface *intf,
1294 const struct usb_device_id *id)
1295{
1296 struct usb_device *dev = interface_to_usbdev(intf);
1297 struct net_device *net;
1298 pegasus_t *pegasus;
1299 int dev_index = id - pegasus_ids;
1300 int res = -ENOMEM;
1301
1302 usb_get_dev(dev);
1303 net = alloc_etherdev(sizeof(struct pegasus));
1304 if (!net) {
1305 dev_err(&intf->dev, "can't allocate %s\n", "device");
1306 goto out;
1307 }
1308
1309 pegasus = netdev_priv(net);
1310 memset(pegasus, 0, sizeof (struct pegasus));
1311 pegasus->dev_index = dev_index;
1312 init_waitqueue_head(&pegasus->ctrl_wait);
1313
1314 if (!alloc_urbs(pegasus)) {
1315 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1316 goto out1;
1317 }
1318
1319 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1320
1321 INIT_WORK(&pegasus->carrier_check, check_carrier, pegasus);
1322
1323 pegasus->intf = intf;
1324 pegasus->usb = dev;
1325 pegasus->net = net;
1326 SET_MODULE_OWNER(net);
1327 net->open = pegasus_open;
1328 net->stop = pegasus_close;
1329 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1330 net->tx_timeout = pegasus_tx_timeout;
1331 net->do_ioctl = pegasus_ioctl;
1332 net->hard_start_xmit = pegasus_start_xmit;
1333 net->set_multicast_list = pegasus_set_multicast;
1334 net->get_stats = pegasus_netdev_stats;
1335 SET_ETHTOOL_OPS(net, &ops);
1336 pegasus->mii.dev = net;
1337 pegasus->mii.mdio_read = mdio_read;
1338 pegasus->mii.mdio_write = mdio_write;
1339 pegasus->mii.phy_id_mask = 0x1f;
1340 pegasus->mii.reg_num_mask = 0x1f;
1341 spin_lock_init(&pegasus->rx_pool_lock);
1342 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1343 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1344
1345 pegasus->features = usb_dev_id[dev_index].private;
1346 get_interrupt_interval(pegasus);
1347 if (reset_mac(pegasus)) {
1348 dev_err(&intf->dev, "can't reset MAC\n");
1349 res = -EIO;
1350 goto out2;
1351 }
1352 set_ethernet_addr(pegasus);
1353 fill_skb_pool(pegasus);
1354 if (pegasus->features & PEGASUS_II) {
1355 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1356 setup_pegasus_II(pegasus);
1357 }
1358 pegasus->phy = mii_phy_probe(pegasus);
1359 if (pegasus->phy == 0xff) {
1360 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1361 pegasus->phy = 1;
1362 }
1363 pegasus->mii.phy_id = pegasus->phy;
1364 usb_set_intfdata(intf, pegasus);
1365 SET_NETDEV_DEV(net, &intf->dev);
1366 pegasus_reset_wol(net);
1367 res = register_netdev(net);
1368 if (res)
1369 goto out3;
1370 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1371 CARRIER_CHECK_DELAY);
1372
1373 dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n",
1374 net->name,
1375 usb_dev_id[dev_index].name,
1376 net->dev_addr [0], net->dev_addr [1],
1377 net->dev_addr [2], net->dev_addr [3],
1378 net->dev_addr [4], net->dev_addr [5]);
1379 return 0;
1380
1381out3:
1382 usb_set_intfdata(intf, NULL);
1383 free_skb_pool(pegasus);
1384out2:
1385 free_all_urbs(pegasus);
1386out1:
1387 free_netdev(net);
1388out:
1389 usb_put_dev(dev);
1390 return res;
1391}
1392
1393static void pegasus_disconnect(struct usb_interface *intf)
1394{
1395 struct pegasus *pegasus = usb_get_intfdata(intf);
1396
1397 usb_set_intfdata(intf, NULL);
1398 if (!pegasus) {
1399 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1400 return;
1401 }
1402
1403 pegasus->flags |= PEGASUS_UNPLUG;
1404 cancel_delayed_work(&pegasus->carrier_check);
1405 unregister_netdev(pegasus->net);
1406 usb_put_dev(interface_to_usbdev(intf));
a85a46f2 1407 unlink_all_urbs(pegasus);
1da177e4
LT		 1408 free_all_urbs(pegasus);
1409 free_skb_pool(pegasus);
1410 if (pegasus->rx_skb)
1411 dev_kfree_skb(pegasus->rx_skb);
1412 free_netdev(pegasus->net);
1413}
1414
27d72e85 1415static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1da177e4
LT		 1416{
1417 struct pegasus *pegasus = usb_get_intfdata(intf);
1418
1419 netif_device_detach (pegasus->net);
7e713b82 1420 cancel_delayed_work(&pegasus->carrier_check);
27d72e85 1421 if (netif_running(pegasus->net)) {
27d72e85
DB		 1422 usb_kill_urb(pegasus->rx_urb);
1423 usb_kill_urb(pegasus->intr_urb);
1424 }
1da177e4
LT		 1425 return 0;
1426}
1427
1428static int pegasus_resume (struct usb_interface *intf)
1429{
1430 struct pegasus *pegasus = usb_get_intfdata(intf);
1431
1432 netif_device_attach (pegasus->net);
27d72e85
DB		 1433 if (netif_running(pegasus->net)) {
1434 pegasus->rx_urb->status = 0;
1435 pegasus->rx_urb->actual_length = 0;
7d12e780 1436 read_bulk_callback(pegasus->rx_urb);
27d72e85
DB		 1437
1438 pegasus->intr_urb->status = 0;
1439 pegasus->intr_urb->actual_length = 0;
7d12e780 1440 intr_callback(pegasus->intr_urb);
27d72e85 1441 }
7e713b82
DB		 1442 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1443 CARRIER_CHECK_DELAY);
1da177e4
LT		 1444 return 0;
1445}
1446
1447static struct usb_driver pegasus_driver = {
1448 .name = driver_name,
1449 .probe = pegasus_probe,
1450 .disconnect = pegasus_disconnect,
1451 .id_table = pegasus_ids,
1452 .suspend = pegasus_suspend,
1453 .resume = pegasus_resume,
1454};
1455
a4f81a61
Y		 1456static void parse_id(char *id)
1457{
1458 unsigned int vendor_id=0, device_id=0, flags=0, i=0;
1459 char *token, *name=NULL;
1460
1461 if ((token = strsep(&id, ":")) != NULL)
1462 name = token;
1463 /* name now points to a null terminated string*/
1464 if ((token = strsep(&id, ":")) != NULL)
1465 vendor_id = simple_strtoul(token, NULL, 16);
1466 if ((token = strsep(&id, ":")) != NULL)
1467 device_id = simple_strtoul(token, NULL, 16);
1468 flags = simple_strtoul(id, NULL, 16);
1469 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1470 driver_name, name, vendor_id, device_id, flags);
1471
1472 if (vendor_id > 0x10000 || vendor_id == 0)
1473 return;
1474 if (device_id > 0x10000 || device_id == 0)
1475 return;
1476
1477 for (i=0; usb_dev_id[i].name; i++);
1478 usb_dev_id[i].name = name;
1479 usb_dev_id[i].vendor = vendor_id;
1480 usb_dev_id[i].device = device_id;
1481 usb_dev_id[i].private = flags;
1482 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1483 pegasus_ids[i].idVendor = vendor_id;
1484 pegasus_ids[i].idProduct = device_id;
1485}
1486
1da177e4
LT		 1487static int __init pegasus_init(void)
1488{
1489 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
a4f81a61
Y		 1490 if (devid)
1491 parse_id(devid);
1da177e4
LT		 1492 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1493 if (!pegasus_workqueue)
1494 return -ENOMEM;
1495 return usb_register(&pegasus_driver);
1496}
1497
1498static void __exit pegasus_exit(void)
1499{
1500 destroy_workqueue(pegasus_workqueue);
1501 usb_deregister(&pegasus_driver);
1502}
1503
1504module_init(pegasus_init);
1505module_exit(pegasus_exit);
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