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Linux v2.6.13
[linux-2.6/next.git] / drivers / usb / net / pegasus.c
blobfcd6d3ccef4460d48c3d534876ae68bdb6ac88cf
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
31 #undef DEBUG
32
33 #include <linux/sched.h>
34 #include <linux/slab.h>
35 #include <linux/init.h>
36 #include <linux/delay.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
39 #include <linux/ethtool.h>
40 #include <linux/mii.h>
41 #include <linux/usb.h>
42 #include <linux/module.h>
43 #include <asm/byteorder.h>
44 #include <asm/uaccess.h>
45 #include "pegasus.h"
46
47 /*
48 * Version Information
49 */
50 #define DRIVER_VERSION "v0.6.12 (2005/01/13)"
51 #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
52 #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
53
54 static const char driver_name[] = "pegasus";
55
56 #undef PEGASUS_WRITE_EEPROM
57 #define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
58 BMSR_100FULL | BMSR_ANEGCAPABLE)
59
60 static int loopback = 0;
61 static int mii_mode = 0;
62
63 static struct usb_eth_dev usb_dev_id[] = {
64 #define PEGASUS_DEV(pn, vid, pid, flags) \
65 {.name = pn, .vendor = vid, .device = pid, .private = flags},
66 #include "pegasus.h"
67 #undef PEGASUS_DEV
68 {NULL, 0, 0, 0}
69 };
70
71 static 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
76 {}
77 };
78
79 MODULE_AUTHOR(DRIVER_AUTHOR);
80 MODULE_DESCRIPTION(DRIVER_DESC);
81 MODULE_LICENSE("GPL");
82 module_param(loopback, bool, 0);
83 module_param(mii_mode, bool, 0);
84 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
85 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
86
87 /* use ethtool to change the level for any given device */
88 static int msg_level = -1;
89 module_param (msg_level, int, 0);
90 MODULE_PARM_DESC (msg_level, "Override default message level");
91
92 MODULE_DEVICE_TABLE(usb, pegasus_ids);
93
94 static int update_eth_regs_async(pegasus_t *);
95 /* Aargh!!! I _really_ hate such tweaks */
96 static void ctrl_callback(struct urb *urb, struct pt_regs *regs)
97 {
98 pegasus_t *pegasus = urb->context;
99
100 if (!pegasus)
101 return;
102
103 switch (urb->status) {
104 case 0:
105 if (pegasus->flags & ETH_REGS_CHANGE) {
106 pegasus->flags &= ~ETH_REGS_CHANGE;
107 pegasus->flags |= ETH_REGS_CHANGED;
108 update_eth_regs_async(pegasus);
109 return;
110 }
111 break;
112 case -EINPROGRESS:
113 return;
114 case -ENOENT:
115 break;
116 default:
117 if (netif_msg_drv(pegasus))
118 dev_err(&pegasus->intf->dev, "%s, status %d\n",
119 __FUNCTION__, urb->status);
120 }
121 pegasus->flags &= ~ETH_REGS_CHANGED;
122 wake_up(&pegasus->ctrl_wait);
123 }
124
125 static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
126 void *data)
127 {
128 int ret;
129 char *buffer;
130 DECLARE_WAITQUEUE(wait, current);
131
132 buffer = kmalloc(size, GFP_KERNEL);
133 if (!buffer) {
134 if (netif_msg_drv(pegasus))
135 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
136 __FUNCTION__);
137 return -ENOMEM;
138 }
139 add_wait_queue(&pegasus->ctrl_wait, &wait);
140 set_current_state(TASK_UNINTERRUPTIBLE);
141 while (pegasus->flags & ETH_REGS_CHANGED)
142 schedule();
143 remove_wait_queue(&pegasus->ctrl_wait, &wait);
144 set_current_state(TASK_RUNNING);
145
146 pegasus->dr.bRequestType = PEGASUS_REQT_READ;
147 pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
148 pegasus->dr.wValue = cpu_to_le16(0);
149 pegasus->dr.wIndex = cpu_to_le16p(&indx);
150 pegasus->dr.wLength = cpu_to_le16p(&size);
151 pegasus->ctrl_urb->transfer_buffer_length = size;
152
153 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
154 usb_rcvctrlpipe(pegasus->usb, 0),
155 (char *) &pegasus->dr,
156 buffer, size, ctrl_callback, pegasus);
157
158 add_wait_queue(&pegasus->ctrl_wait, &wait);
159 set_current_state(TASK_UNINTERRUPTIBLE);
160
161 /* using ATOMIC, we'd never wake up if we slept */
162 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
163 if (netif_msg_drv(pegasus))
164 dev_err(&pegasus->intf->dev, "%s, status %d\n",
165 __FUNCTION__, ret);
166 goto out;
167 }
168
169 schedule();
170 out:
171 remove_wait_queue(&pegasus->ctrl_wait, &wait);
172 memcpy(data, buffer, size);
173 kfree(buffer);
174
175 return ret;
176 }
177
178 static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
179 void *data)
180 {
181 int ret;
182 char *buffer;
183 DECLARE_WAITQUEUE(wait, current);
184
185 buffer = kmalloc(size, GFP_KERNEL);
186 if (!buffer) {
187 if (netif_msg_drv(pegasus))
188 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
189 __FUNCTION__);
190 return -ENOMEM;
191 }
192 memcpy(buffer, data, size);
193
194 add_wait_queue(&pegasus->ctrl_wait, &wait);
195 set_current_state(TASK_UNINTERRUPTIBLE);
196 while (pegasus->flags & ETH_REGS_CHANGED)
197 schedule();
198 remove_wait_queue(&pegasus->ctrl_wait, &wait);
199 set_current_state(TASK_RUNNING);
200
201 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
202 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
203 pegasus->dr.wValue = cpu_to_le16(0);
204 pegasus->dr.wIndex = cpu_to_le16p(&indx);
205 pegasus->dr.wLength = cpu_to_le16p(&size);
206 pegasus->ctrl_urb->transfer_buffer_length = size;
207
208 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
209 usb_sndctrlpipe(pegasus->usb, 0),
210 (char *) &pegasus->dr,
211 buffer, size, ctrl_callback, pegasus);
212
213 add_wait_queue(&pegasus->ctrl_wait, &wait);
214 set_current_state(TASK_UNINTERRUPTIBLE);
215
216 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
217 if (netif_msg_drv(pegasus))
218 dev_err(&pegasus->intf->dev, "%s, status %d\n",
219 __FUNCTION__, ret);
220 goto out;
221 }
222
223 schedule();
224 out:
225 remove_wait_queue(&pegasus->ctrl_wait, &wait);
226 kfree(buffer);
227
228 return ret;
229 }
230
231 static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
232 {
233 int ret;
234 char *tmp;
235 DECLARE_WAITQUEUE(wait, current);
236
237 tmp = kmalloc(1, GFP_KERNEL);
238 if (!tmp) {
239 if (netif_msg_drv(pegasus))
240 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
241 __FUNCTION__);
242 return -ENOMEM;
243 }
244 memcpy(tmp, &data, 1);
245 add_wait_queue(&pegasus->ctrl_wait, &wait);
246 set_current_state(TASK_UNINTERRUPTIBLE);
247 while (pegasus->flags & ETH_REGS_CHANGED)
248 schedule();
249 remove_wait_queue(&pegasus->ctrl_wait, &wait);
250 set_current_state(TASK_RUNNING);
251
252 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
253 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
254 pegasus->dr.wValue = cpu_to_le16(data);
255 pegasus->dr.wIndex = cpu_to_le16p(&indx);
256 pegasus->dr.wLength = cpu_to_le16(1);
257 pegasus->ctrl_urb->transfer_buffer_length = 1;
258
259 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
260 usb_sndctrlpipe(pegasus->usb, 0),
261 (char *) &pegasus->dr,
262 &tmp, 1, ctrl_callback, pegasus);
263
264 add_wait_queue(&pegasus->ctrl_wait, &wait);
265 set_current_state(TASK_UNINTERRUPTIBLE);
266
267 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
268 if (netif_msg_drv(pegasus))
269 dev_err(&pegasus->intf->dev, "%s, status %d\n",
270 __FUNCTION__, ret);
271 goto out;
272 }
273
274 schedule();
275 out:
276 remove_wait_queue(&pegasus->ctrl_wait, &wait);
277 kfree(tmp);
278
279 return ret;
280 }
281
282 static int update_eth_regs_async(pegasus_t * pegasus)
283 {
284 int ret;
285
286 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
287 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
288 pegasus->dr.wValue = 0;
289 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
290 pegasus->dr.wLength = cpu_to_le16(3);
291 pegasus->ctrl_urb->transfer_buffer_length = 3;
292
293 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
294 usb_sndctrlpipe(pegasus->usb, 0),
295 (char *) &pegasus->dr,
296 pegasus->eth_regs, 3, ctrl_callback, pegasus);
297
298 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC)))
299 if (netif_msg_drv(pegasus))
300 dev_err(&pegasus->intf->dev, "%s, status %d\n",
301 __FUNCTION__, ret);
302
303 return ret;
304 }
305
306 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
307 {
308 int i;
309 __u8 data[4] = { phy, 0, 0, indx };
310 __le16 regdi;
311 int ret;
312
313 ret = set_register(pegasus, PhyCtrl, 0);
314 ret = set_registers(pegasus, PhyAddr, sizeof (data), data);
315 ret = set_register(pegasus, PhyCtrl, (indx | PHY_READ));
316 for (i = 0; i < REG_TIMEOUT; i++) {
317 ret = get_registers(pegasus, PhyCtrl, 1, data);
318 if (data[0] & PHY_DONE)
319 break;
320 }
321 if (i < REG_TIMEOUT) {
322 ret = get_registers(pegasus, PhyData, 2, &regdi);
323 *regd = le16_to_cpu(regdi);
324 return 1;
325 }
326 if (netif_msg_drv(pegasus))
327 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
328
329 return 0;
330 }
331
332 static int mdio_read(struct net_device *dev, int phy_id, int loc)
333 {
334 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
335 u16 res;
336
337 read_mii_word(pegasus, phy_id, loc, &res);
338 return (int)res;
339 }
340
341 static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
342 {
343 int i;
344 __u8 data[4] = { phy, 0, 0, indx };
345 int ret;
346
347 data[1] = (u8) regd;
348 data[2] = (u8) (regd >> 8);
349 ret = set_register(pegasus, PhyCtrl, 0);
350 ret = set_registers(pegasus, PhyAddr, sizeof(data), data);
351 ret = set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
352 for (i = 0; i < REG_TIMEOUT; i++) {
353 ret = get_registers(pegasus, PhyCtrl, 1, data);
354 if (data[0] & PHY_DONE)
355 break;
356 }
357 if (i < REG_TIMEOUT)
358 return 0;
359
360 if (netif_msg_drv(pegasus))
361 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
362 return 1;
363 }
364
365 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
366 {
367 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
368
369 write_mii_word(pegasus, phy_id, loc, val);
370 }
371
372 static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
373 {
374 int i;
375 __u8 tmp;
376 __le16 retdatai;
377 int ret;
378
379 ret = set_register(pegasus, EpromCtrl, 0);
380 ret = set_register(pegasus, EpromOffset, index);
381 ret = set_register(pegasus, EpromCtrl, EPROM_READ);
382
383 for (i = 0; i < REG_TIMEOUT; i++) {
384 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
385 if (tmp & EPROM_DONE)
386 break;
387 }
388 if (i < REG_TIMEOUT) {
389 ret = get_registers(pegasus, EpromData, 2, &retdatai);
390 *retdata = le16_to_cpu(retdatai);
391 return 0;
392 }
393
394 if (netif_msg_drv(pegasus))
395 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
396 return -1;
397 }
398
399 #ifdef PEGASUS_WRITE_EEPROM
400 static inline void enable_eprom_write(pegasus_t * pegasus)
401 {
402 __u8 tmp;
403 int ret;
404
405 ret = get_registers(pegasus, EthCtrl2, 1, &tmp);
406 ret = set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
407 }
408
409 static inline void disable_eprom_write(pegasus_t * pegasus)
410 {
411 __u8 tmp;
412 int ret;
413
414 ret = get_registers(pegasus, EthCtrl2, 1, &tmp);
415 ret = set_register(pegasus, EpromCtrl, 0);
416 ret = set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
417 }
418
419 static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
420 {
421 int i;
422 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
423 int ret;
424
425 ret = set_registers(pegasus, EpromOffset, 4, d);
426 enable_eprom_write(pegasus);
427 ret = set_register(pegasus, EpromOffset, index);
428 ret = set_registers(pegasus, EpromData, 2, &data);
429 ret = set_register(pegasus, EpromCtrl, EPROM_WRITE);
430
431 for (i = 0; i < REG_TIMEOUT; i++) {
432 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
433 if (tmp & EPROM_DONE)
434 break;
435 }
436 disable_eprom_write(pegasus);
437 if (i < REG_TIMEOUT)
438 return 0;
439 if (netif_msg_drv(pegasus))
440 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
441 return -1;
442 }
443 #endif /* PEGASUS_WRITE_EEPROM */
444
445 static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
446 {
447 int i;
448 __u16 w16;
449
450 for (i = 0; i < 3; i++) {
451 read_eprom_word(pegasus, i, &w16);
452 ((__le16 *) id)[i] = cpu_to_le16p(&w16);
453 }
454 }
455
456 static void set_ethernet_addr(pegasus_t * pegasus)
457 {
458 __u8 node_id[6];
459 int ret;
460
461 get_node_id(pegasus, node_id);
462 ret = set_registers(pegasus, EthID, sizeof (node_id), node_id);
463 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
464 }
465
466 static inline int reset_mac(pegasus_t * pegasus)
467 {
468 __u8 data = 0x8;
469 int i;
470 int ret;
471
472 ret = set_register(pegasus, EthCtrl1, data);
473 for (i = 0; i < REG_TIMEOUT; i++) {
474 ret = get_registers(pegasus, EthCtrl1, 1, &data);
475 if (~data & 0x08) {
476 if (loopback & 1)
477 break;
478 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
479 ret = set_register(pegasus, Gpio1, 0x34);
480 else
481 ret = set_register(pegasus, Gpio1, 0x26);
482 ret = set_register(pegasus, Gpio0, pegasus->features);
483 ret = set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
484 break;
485 }
486 }
487 if (i == REG_TIMEOUT)
488 return 1;
489
490 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
491 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
492 ret = set_register(pegasus, Gpio0, 0x24);
493 ret = set_register(pegasus, Gpio0, 0x26);
494 }
495 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
496 __u16 auxmode;
497 read_mii_word(pegasus, 3, 0x1b, &auxmode);
498 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
499 }
500
501 return 0;
502 }
503
504 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
505 {
506 __u16 linkpart;
507 __u8 data[4];
508 pegasus_t *pegasus = netdev_priv(dev);
509 int ret;
510
511 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
512 data[0] = 0xc9;
513 data[1] = 0;
514 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
515 data[1] |= 0x20; /* set full duplex */
516 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
517 data[1] |= 0x10; /* set 100 Mbps */
518 if (mii_mode)
519 data[1] = 0;
520 data[2] = (loopback & 1) ? 0x09 : 0x01;
521
522 memcpy(pegasus->eth_regs, data, sizeof (data));
523 ret = set_registers(pegasus, EthCtrl0, 3, data);
524
525 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
526 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
527 u16 auxmode;
528 read_mii_word(pegasus, 0, 0x1b, &auxmode);
529 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
530 }
531
532 return 0;
533 }
534
535 static void fill_skb_pool(pegasus_t * pegasus)
536 {
537 int i;
538
539 for (i = 0; i < RX_SKBS; i++) {
540 if (pegasus->rx_pool[i])
541 continue;
542 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
543 /*
544 ** we give up if the allocation fail. the tasklet will be
545 ** rescheduled again anyway...
546 */
547 if (pegasus->rx_pool[i] == NULL)
548 return;
549 pegasus->rx_pool[i]->dev = pegasus->net;
550 skb_reserve(pegasus->rx_pool[i], 2);
551 }
552 }
553
554 static void free_skb_pool(pegasus_t * pegasus)
555 {
556 int i;
557
558 for (i = 0; i < RX_SKBS; i++) {
559 if (pegasus->rx_pool[i]) {
560 dev_kfree_skb(pegasus->rx_pool[i]);
561 pegasus->rx_pool[i] = NULL;
562 }
563 }
564 }
565
566 static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
567 {
568 int i;
569 struct sk_buff *skb;
570
571 for (i = 0; i < RX_SKBS; i++) {
572 if (likely(pegasus->rx_pool[i] != NULL)) {
573 skb = pegasus->rx_pool[i];
574 pegasus->rx_pool[i] = NULL;
575 return skb;
576 }
577 }
578 return NULL;
579 }
580
581 static void read_bulk_callback(struct urb *urb, struct pt_regs *regs)
582 {
583 pegasus_t *pegasus = urb->context;
584 struct net_device *net;
585 int rx_status, count = urb->actual_length;
586 u8 *buf = urb->transfer_buffer;
587 __u16 pkt_len;
588
589 if (!pegasus)
590 return;
591
592 net = pegasus->net;
593 if (!netif_device_present(net) || !netif_running(net))
594 return;
595
596 switch (urb->status) {
597 case 0:
598 break;
599 case -ETIMEDOUT:
600 if (netif_msg_rx_err(pegasus))
601 pr_debug("%s: reset MAC\n", net->name);
602 pegasus->flags &= ~PEGASUS_RX_BUSY;
603 break;
604 case -EPIPE: /* stall, or disconnect from TT */
605 /* FIXME schedule work to clear the halt */
606 if (netif_msg_rx_err(pegasus))
607 printk(KERN_WARNING "%s: no rx stall recovery\n",
608 net->name);
609 return;
610 case -ENOENT:
611 case -ECONNRESET:
612 case -ESHUTDOWN:
613 if (netif_msg_ifdown(pegasus))
614 pr_debug("%s: rx unlink, %d\n", net->name, urb->status);
615 return;
616 default:
617 if (netif_msg_rx_err(pegasus))
618 pr_debug("%s: RX status %d\n", net->name, urb->status);
619 goto goon;
620 }
621
622 if (!count || count < 4)
623 goto goon;
624
625 rx_status = buf[count - 2];
626 if (rx_status & 0x1e) {
627 if (netif_msg_rx_err(pegasus))
628 pr_debug("%s: RX packet error %x\n",
629 net->name, rx_status);
630 pegasus->stats.rx_errors++;
631 if (rx_status & 0x06) // long or runt
632 pegasus->stats.rx_length_errors++;
633 if (rx_status & 0x08)
634 pegasus->stats.rx_crc_errors++;
635 if (rx_status & 0x10) // extra bits
636 pegasus->stats.rx_frame_errors++;
637 goto goon;
638 }
639 if (pegasus->chip == 0x8513) {
640 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
641 pkt_len &= 0x0fff;
642 pegasus->rx_skb->data += 2;
643 } else {
644 pkt_len = buf[count - 3] << 8;
645 pkt_len += buf[count - 4];
646 pkt_len &= 0xfff;
647 pkt_len -= 8;
648 }
649
650 /*
651 * at this point we are sure pegasus->rx_skb != NULL
652 * so we go ahead and pass up the packet.
653 */
654 skb_put(pegasus->rx_skb, pkt_len);
655 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
656 netif_rx(pegasus->rx_skb);
657 pegasus->stats.rx_packets++;
658 pegasus->stats.rx_bytes += pkt_len;
659
660 if (pegasus->flags & PEGASUS_UNPLUG)
661 return;
662
663 spin_lock(&pegasus->rx_pool_lock);
664 pegasus->rx_skb = pull_skb(pegasus);
665 spin_unlock(&pegasus->rx_pool_lock);
666
667 if (pegasus->rx_skb == NULL)
668 goto tl_sched;
669 goon:
670 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
671 usb_rcvbulkpipe(pegasus->usb, 1),
672 pegasus->rx_skb->data, PEGASUS_MTU + 8,
673 read_bulk_callback, pegasus);
674 if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
675 pegasus->flags |= PEGASUS_RX_URB_FAIL;
676 goto tl_sched;
677 } else {
678 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
679 }
680
681 return;
682
683 tl_sched:
684 tasklet_schedule(&pegasus->rx_tl);
685 }
686
687 static void rx_fixup(unsigned long data)
688 {
689 pegasus_t *pegasus;
690 unsigned long flags;
691
692 pegasus = (pegasus_t *) data;
693 if (pegasus->flags & PEGASUS_UNPLUG)
694 return;
695
696 spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
697 fill_skb_pool(pegasus);
698 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
699 if (pegasus->rx_skb)
700 goto try_again;
701 if (pegasus->rx_skb == NULL) {
702 pegasus->rx_skb = pull_skb(pegasus);
703 }
704 if (pegasus->rx_skb == NULL) {
705 if (netif_msg_rx_err(pegasus))
706 printk(KERN_WARNING "%s: low on memory\n",
707 pegasus->net->name);
708 tasklet_schedule(&pegasus->rx_tl);
709 goto done;
710 }
711 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
712 usb_rcvbulkpipe(pegasus->usb, 1),
713 pegasus->rx_skb->data, PEGASUS_MTU + 8,
714 read_bulk_callback, pegasus);
715 try_again:
716 if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
717 pegasus->flags |= PEGASUS_RX_URB_FAIL;
718 tasklet_schedule(&pegasus->rx_tl);
719 } else {
720 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
721 }
722 done:
723 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
724 }
725
726 static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
727 {
728 pegasus_t *pegasus = urb->context;
729 struct net_device *net = pegasus->net;
730
731 if (!pegasus)
732 return;
733
734 if (!netif_device_present(net) || !netif_running(net))
735 return;
736
737 switch (urb->status) {
738 case -EPIPE:
739 /* FIXME schedule_work() to clear the tx halt */
740 netif_stop_queue(net);
741 if (netif_msg_tx_err(pegasus))
742 printk(KERN_WARNING "%s: no tx stall recovery\n",
743 net->name);
744 return;
745 case -ENOENT:
746 case -ECONNRESET:
747 case -ESHUTDOWN:
748 if (netif_msg_ifdown(pegasus))
749 pr_debug("%s: tx unlink, %d\n", net->name, urb->status);
750 return;
751 default:
752 if (netif_msg_tx_err(pegasus))
753 pr_info("%s: TX status %d\n", net->name, urb->status);
754 /* FALL THROUGH */
755 case 0:
756 break;
757 }
758
759 net->trans_start = jiffies;
760 netif_wake_queue(net);
761 }
762
763 static void intr_callback(struct urb *urb, struct pt_regs *regs)
764 {
765 pegasus_t *pegasus = urb->context;
766 struct net_device *net;
767 int status;
768
769 if (!pegasus)
770 return;
771 net = pegasus->net;
772
773 switch (urb->status) {
774 case 0:
775 break;
776 case -ECONNRESET: /* unlink */
777 case -ENOENT:
778 case -ESHUTDOWN:
779 return;
780 default:
781 /* some Pegasus-I products report LOTS of data
782 * toggle errors... avoid log spamming
783 */
784 if (netif_msg_timer(pegasus))
785 pr_debug("%s: intr status %d\n", net->name,
786 urb->status);
787 }
788
789 if (urb->actual_length >= 6) {
790 u8 * d = urb->transfer_buffer;
791
792 /* byte 0 == tx_status1, reg 2B */
793 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
794 |LATE_COL|JABBER_TIMEOUT)) {
795 pegasus->stats.tx_errors++;
796 if (d[0] & TX_UNDERRUN)
797 pegasus->stats.tx_fifo_errors++;
798 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
799 pegasus->stats.tx_aborted_errors++;
800 if (d[0] & LATE_COL)
801 pegasus->stats.tx_window_errors++;
802 }
803
804 /* d[5].LINK_STATUS lies on some adapters.
805 * d[0].NO_CARRIER kicks in only with failed TX.
806 * ... so monitoring with MII may be safest.
807 */
808 if (d[0] & NO_CARRIER)
809 netif_carrier_off(net);
810 else
811 netif_carrier_on(net);
812
813 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
814 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
815 }
816
817 status = usb_submit_urb(urb, SLAB_ATOMIC);
818 if (status && netif_msg_timer(pegasus))
819 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
820 net->name, status);
821 }
822
823 static void pegasus_tx_timeout(struct net_device *net)
824 {
825 pegasus_t *pegasus = netdev_priv(net);
826 if (netif_msg_timer(pegasus))
827 printk(KERN_WARNING "%s: tx timeout\n", net->name);
828 pegasus->tx_urb->transfer_flags |= URB_ASYNC_UNLINK;
829 usb_unlink_urb(pegasus->tx_urb);
830 pegasus->stats.tx_errors++;
831 }
832
833 static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
834 {
835 pegasus_t *pegasus = netdev_priv(net);
836 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
837 int res;
838 __u16 l16 = skb->len;
839
840 netif_stop_queue(net);
841
842 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
843 memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
844 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
845 usb_sndbulkpipe(pegasus->usb, 2),
846 pegasus->tx_buff, count,
847 write_bulk_callback, pegasus);
848 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
849 if (netif_msg_tx_err(pegasus))
850 printk(KERN_WARNING "%s: fail tx, %d\n",
851 net->name, res);
852 switch (res) {
853 case -EPIPE: /* stall, or disconnect from TT */
854 /* cleanup should already have been scheduled */
855 break;
856 case -ENODEV: /* disconnect() upcoming */
857 break;
858 default:
859 pegasus->stats.tx_errors++;
860 netif_start_queue(net);
861 }
862 } else {
863 pegasus->stats.tx_packets++;
864 pegasus->stats.tx_bytes += skb->len;
865 net->trans_start = jiffies;
866 }
867 dev_kfree_skb(skb);
868
869 return 0;
870 }
871
872 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
873 {
874 return &((pegasus_t *) netdev_priv(dev))->stats;
875 }
876
877 static inline void disable_net_traffic(pegasus_t * pegasus)
878 {
879 int tmp = 0;
880 int ret;
881
882 ret = set_registers(pegasus, EthCtrl0, 2, &tmp);
883 }
884
885 static inline void get_interrupt_interval(pegasus_t * pegasus)
886 {
887 __u8 data[2];
888
889 read_eprom_word(pegasus, 4, (__u16 *) data);
890 if (data[1] < 0x80) {
891 if (netif_msg_timer(pegasus))
892 dev_info(&pegasus->intf->dev,
893 "intr interval changed from %ums to %ums\n",
894 data[1], 0x80);
895 data[1] = 0x80;
896 #ifdef PEGASUS_WRITE_EEPROM
897 write_eprom_word(pegasus, 4, *(__u16 *) data);
898 #endif
899 }
900 pegasus->intr_interval = data[1];
901 }
902
903 static void set_carrier(struct net_device *net)
904 {
905 pegasus_t *pegasus = netdev_priv(net);
906 u16 tmp;
907
908 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
909 return;
910 if (tmp & BMSR_LSTATUS)
911 netif_carrier_on(net);
912 else
913 netif_carrier_off(net);
914 }
915
916 static void free_all_urbs(pegasus_t * pegasus)
917 {
918 usb_free_urb(pegasus->intr_urb);
919 usb_free_urb(pegasus->tx_urb);
920 usb_free_urb(pegasus->rx_urb);
921 usb_free_urb(pegasus->ctrl_urb);
922 }
923
924 static void unlink_all_urbs(pegasus_t * pegasus)
925 {
926 usb_kill_urb(pegasus->intr_urb);
927 usb_kill_urb(pegasus->tx_urb);
928 usb_kill_urb(pegasus->rx_urb);
929 usb_kill_urb(pegasus->ctrl_urb);
930 }
931
932 static int alloc_urbs(pegasus_t * pegasus)
933 {
934 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
935 if (!pegasus->ctrl_urb) {
936 return 0;
937 }
938 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
939 if (!pegasus->rx_urb) {
940 usb_free_urb(pegasus->ctrl_urb);
941 return 0;
942 }
943 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
944 if (!pegasus->tx_urb) {
945 usb_free_urb(pegasus->rx_urb);
946 usb_free_urb(pegasus->ctrl_urb);
947 return 0;
948 }
949 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
950 if (!pegasus->intr_urb) {
951 usb_free_urb(pegasus->tx_urb);
952 usb_free_urb(pegasus->rx_urb);
953 usb_free_urb(pegasus->ctrl_urb);
954 return 0;
955 }
956
957 return 1;
958 }
959
960 static int pegasus_open(struct net_device *net)
961 {
962 pegasus_t *pegasus = netdev_priv(net);
963 int res;
964
965 if (pegasus->rx_skb == NULL)
966 pegasus->rx_skb = pull_skb(pegasus);
967 /*
968 ** Note: no point to free the pool. it is empty :-)
969 */
970 if (!pegasus->rx_skb)
971 return -ENOMEM;
972
973 res = set_registers(pegasus, EthID, 6, net->dev_addr);
974
975 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
976 usb_rcvbulkpipe(pegasus->usb, 1),
977 pegasus->rx_skb->data, PEGASUS_MTU + 8,
978 read_bulk_callback, pegasus);
979 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
980 if (netif_msg_ifup(pegasus))
981 pr_debug("%s: failed rx_urb, %d", net->name, res);
982 goto exit;
983 }
984
985 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
986 usb_rcvintpipe(pegasus->usb, 3),
987 pegasus->intr_buff, sizeof (pegasus->intr_buff),
988 intr_callback, pegasus, pegasus->intr_interval);
989 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
990 if (netif_msg_ifup(pegasus))
991 pr_debug("%s: failed intr_urb, %d\n", net->name, res);
992 usb_kill_urb(pegasus->rx_urb);
993 goto exit;
994 }
995 if ((res = enable_net_traffic(net, pegasus->usb))) {
996 if (netif_msg_ifup(pegasus))
997 pr_debug("%s: can't enable_net_traffic() - %d\n",
998 net->name, res);
999 res = -EIO;
1000 usb_kill_urb(pegasus->rx_urb);
1001 usb_kill_urb(pegasus->intr_urb);
1002 free_skb_pool(pegasus);
1003 goto exit;
1004 }
1005 set_carrier(net);
1006 netif_start_queue(net);
1007 if (netif_msg_ifup(pegasus))
1008 pr_debug("%s: open\n", net->name);
1009 res = 0;
1010 exit:
1011 return res;
1012 }
1013
1014 static int pegasus_close(struct net_device *net)
1015 {
1016 pegasus_t *pegasus = netdev_priv(net);
1017
1018 netif_stop_queue(net);
1019 if (!(pegasus->flags & PEGASUS_UNPLUG))
1020 disable_net_traffic(pegasus);
1021 tasklet_kill(&pegasus->rx_tl);
1022 unlink_all_urbs(pegasus);
1023
1024 return 0;
1025 }
1026
1027 static void pegasus_get_drvinfo(struct net_device *dev,
1028 struct ethtool_drvinfo *info)
1029 {
1030 pegasus_t *pegasus = netdev_priv(dev);
1031 strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1032 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1033 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1034 }
1035
1036 /* also handles three patterns of some kind in hardware */
1037 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
1038
1039 static void
1040 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1041 {
1042 pegasus_t *pegasus = netdev_priv(dev);
1043
1044 wol->supported = WAKE_MAGIC | WAKE_PHY;
1045 wol->wolopts = pegasus->wolopts;
1046 }
1047
1048 static int
1049 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1050 {
1051 pegasus_t *pegasus = netdev_priv(dev);
1052 u8 reg78 = 0x04;
1053
1054 if (wol->wolopts & ~WOL_SUPPORTED)
1055 return -EINVAL;
1056
1057 if (wol->wolopts & WAKE_MAGIC)
1058 reg78 |= 0x80;
1059 if (wol->wolopts & WAKE_PHY)
1060 reg78 |= 0x40;
1061 /* FIXME this 0x10 bit still needs to get set in the chip... */
1062 if (wol->wolopts)
1063 pegasus->eth_regs[0] |= 0x10;
1064 else
1065 pegasus->eth_regs[0] &= ~0x10;
1066 pegasus->wolopts = wol->wolopts;
1067 return set_register(pegasus, WakeupControl, reg78);
1068 }
1069
1070 static inline void pegasus_reset_wol(struct net_device *dev)
1071 {
1072 struct ethtool_wolinfo wol;
1073
1074 memset(&wol, 0, sizeof wol);
1075 (void) pegasus_set_wol(dev, &wol);
1076 }
1077
1078 static int
1079 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1080 {
1081 pegasus_t *pegasus;
1082
1083 if (in_atomic())
1084 return 0;
1085
1086 pegasus = netdev_priv(dev);
1087 mii_ethtool_gset(&pegasus->mii, ecmd);
1088
1089 return 0;
1090 }
1091
1092 static int
1093 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1094 {
1095 pegasus_t *pegasus = netdev_priv(dev);
1096 return mii_ethtool_sset(&pegasus->mii, ecmd);
1097 }
1098
1099 static int pegasus_nway_reset(struct net_device *dev)
1100 {
1101 pegasus_t *pegasus = netdev_priv(dev);
1102 return mii_nway_restart(&pegasus->mii);
1103 }
1104
1105 static u32 pegasus_get_link(struct net_device *dev)
1106 {
1107 pegasus_t *pegasus = netdev_priv(dev);
1108 return mii_link_ok(&pegasus->mii);
1109 }
1110
1111 static u32 pegasus_get_msglevel(struct net_device *dev)
1112 {
1113 pegasus_t *pegasus = netdev_priv(dev);
1114 return pegasus->msg_enable;
1115 }
1116
1117 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1118 {
1119 pegasus_t *pegasus = netdev_priv(dev);
1120 pegasus->msg_enable = v;
1121 }
1122
1123 static struct ethtool_ops ops = {
1124 .get_drvinfo = pegasus_get_drvinfo,
1125 .get_settings = pegasus_get_settings,
1126 .set_settings = pegasus_set_settings,
1127 .nway_reset = pegasus_nway_reset,
1128 .get_link = pegasus_get_link,
1129 .get_msglevel = pegasus_get_msglevel,
1130 .set_msglevel = pegasus_set_msglevel,
1131 .get_wol = pegasus_get_wol,
1132 .set_wol = pegasus_set_wol,
1133 };
1134
1135 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1136 {
1137 __u16 *data = (__u16 *) & rq->ifr_ifru;
1138 pegasus_t *pegasus = netdev_priv(net);
1139 int res;
1140
1141 switch (cmd) {
1142 case SIOCDEVPRIVATE:
1143 data[0] = pegasus->phy;
1144 case SIOCDEVPRIVATE + 1:
1145 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1146 res = 0;
1147 break;
1148 case SIOCDEVPRIVATE + 2:
1149 if (!capable(CAP_NET_ADMIN))
1150 return -EPERM;
1151 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1152 res = 0;
1153 break;
1154 default:
1155 res = -EOPNOTSUPP;
1156 }
1157 return res;
1158 }
1159
1160 static void pegasus_set_multicast(struct net_device *net)
1161 {
1162 pegasus_t *pegasus = netdev_priv(net);
1163
1164 if (net->flags & IFF_PROMISC) {
1165 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1166 if (netif_msg_link(pegasus))
1167 pr_info("%s: Promiscuous mode enabled.\n", net->name);
1168 } else if (net->mc_count ||
1169 (net->flags & IFF_ALLMULTI)) {
1170 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1171 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1172 if (netif_msg_link(pegasus))
1173 pr_info("%s: set allmulti\n", net->name);
1174 } else {
1175 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1176 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1177 }
1178
1179 pegasus->flags |= ETH_REGS_CHANGE;
1180 ctrl_callback(pegasus->ctrl_urb, NULL);
1181 }
1182
1183 static __u8 mii_phy_probe(pegasus_t * pegasus)
1184 {
1185 int i;
1186 __u16 tmp;
1187
1188 for (i = 0; i < 32; i++) {
1189 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1190 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1191 continue;
1192 else
1193 return i;
1194 }
1195
1196 return 0xff;
1197 }
1198
1199 static inline void setup_pegasus_II(pegasus_t * pegasus)
1200 {
1201 __u8 data = 0xa5;
1202 int ret;
1203
1204 ret = set_register(pegasus, Reg1d, 0);
1205 ret = set_register(pegasus, Reg7b, 1);
1206 mdelay(100);
1207 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1208 ret = set_register(pegasus, Reg7b, 0);
1209 else
1210 ret = set_register(pegasus, Reg7b, 2);
1211
1212 ret = set_register(pegasus, 0x83, data);
1213 ret = get_registers(pegasus, 0x83, 1, &data);
1214
1215 if (data == 0xa5) {
1216 pegasus->chip = 0x8513;
1217 } else {
1218 pegasus->chip = 0;
1219 }
1220
1221 ret = set_register(pegasus, 0x80, 0xc0);
1222 ret = set_register(pegasus, 0x83, 0xff);
1223 ret = set_register(pegasus, 0x84, 0x01);
1224
1225 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1226 ret = set_register(pegasus, Reg81, 6);
1227 else
1228 ret = set_register(pegasus, Reg81, 2);
1229 }
1230
1231
1232 static struct workqueue_struct *pegasus_workqueue = NULL;
1233 #define CARRIER_CHECK_DELAY (2 * HZ)
1234
1235 static void check_carrier(void *data)
1236 {
1237 pegasus_t *pegasus = data;
1238 set_carrier(pegasus->net);
1239 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1240 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1241 CARRIER_CHECK_DELAY);
1242 }
1243 }
1244
1245 static int pegasus_probe(struct usb_interface *intf,
1246 const struct usb_device_id *id)
1247 {
1248 struct usb_device *dev = interface_to_usbdev(intf);
1249 struct net_device *net;
1250 pegasus_t *pegasus;
1251 int dev_index = id - pegasus_ids;
1252 int res = -ENOMEM;
1253
1254 usb_get_dev(dev);
1255 net = alloc_etherdev(sizeof(struct pegasus));
1256 if (!net) {
1257 dev_err(&intf->dev, "can't allocate %s\n", "device");
1258 goto out;
1259 }
1260
1261 pegasus = netdev_priv(net);
1262 memset(pegasus, 0, sizeof (struct pegasus));
1263 pegasus->dev_index = dev_index;
1264 init_waitqueue_head(&pegasus->ctrl_wait);
1265
1266 if (!alloc_urbs(pegasus)) {
1267 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1268 goto out1;
1269 }
1270
1271 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1272
1273 INIT_WORK(&pegasus->carrier_check, check_carrier, pegasus);
1274
1275 pegasus->intf = intf;
1276 pegasus->usb = dev;
1277 pegasus->net = net;
1278 SET_MODULE_OWNER(net);
1279 net->open = pegasus_open;
1280 net->stop = pegasus_close;
1281 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1282 net->tx_timeout = pegasus_tx_timeout;
1283 net->do_ioctl = pegasus_ioctl;
1284 net->hard_start_xmit = pegasus_start_xmit;
1285 net->set_multicast_list = pegasus_set_multicast;
1286 net->get_stats = pegasus_netdev_stats;
1287 SET_ETHTOOL_OPS(net, &ops);
1288 pegasus->mii.dev = net;
1289 pegasus->mii.mdio_read = mdio_read;
1290 pegasus->mii.mdio_write = mdio_write;
1291 pegasus->mii.phy_id_mask = 0x1f;
1292 pegasus->mii.reg_num_mask = 0x1f;
1293 spin_lock_init(&pegasus->rx_pool_lock);
1294 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1295 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1296
1297 pegasus->features = usb_dev_id[dev_index].private;
1298 get_interrupt_interval(pegasus);
1299 if (reset_mac(pegasus)) {
1300 dev_err(&intf->dev, "can't reset MAC\n");
1301 res = -EIO;
1302 goto out2;
1303 }
1304 set_ethernet_addr(pegasus);
1305 fill_skb_pool(pegasus);
1306 if (pegasus->features & PEGASUS_II) {
1307 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1308 setup_pegasus_II(pegasus);
1309 }
1310 pegasus->phy = mii_phy_probe(pegasus);
1311 if (pegasus->phy == 0xff) {
1312 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1313 pegasus->phy = 1;
1314 }
1315 pegasus->mii.phy_id = pegasus->phy;
1316 usb_set_intfdata(intf, pegasus);
1317 SET_NETDEV_DEV(net, &intf->dev);
1318 pegasus_reset_wol(net);
1319 res = register_netdev(net);
1320 if (res)
1321 goto out3;
1322 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1323 CARRIER_CHECK_DELAY);
1324
1325 dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n",
1326 net->name,
1327 usb_dev_id[dev_index].name,
1328 net->dev_addr [0], net->dev_addr [1],
1329 net->dev_addr [2], net->dev_addr [3],
1330 net->dev_addr [4], net->dev_addr [5]);
1331 return 0;
1332
1333 out3:
1334 usb_set_intfdata(intf, NULL);
1335 free_skb_pool(pegasus);
1336 out2:
1337 free_all_urbs(pegasus);
1338 out1:
1339 free_netdev(net);
1340 out:
1341 usb_put_dev(dev);
1342 return res;
1343 }
1344
1345 static void pegasus_disconnect(struct usb_interface *intf)
1346 {
1347 struct pegasus *pegasus = usb_get_intfdata(intf);
1348
1349 usb_set_intfdata(intf, NULL);
1350 if (!pegasus) {
1351 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1352 return;
1353 }
1354
1355 pegasus->flags |= PEGASUS_UNPLUG;
1356 cancel_delayed_work(&pegasus->carrier_check);
1357 unregister_netdev(pegasus->net);
1358 usb_put_dev(interface_to_usbdev(intf));
1359 free_all_urbs(pegasus);
1360 free_skb_pool(pegasus);
1361 if (pegasus->rx_skb)
1362 dev_kfree_skb(pegasus->rx_skb);
1363 free_netdev(pegasus->net);
1364 }
1365
1366 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1367 {
1368 struct pegasus *pegasus = usb_get_intfdata(intf);
1369
1370 netif_device_detach (pegasus->net);
1371 if (netif_running(pegasus->net)) {
1372 cancel_delayed_work(&pegasus->carrier_check);
1373
1374 usb_kill_urb(pegasus->rx_urb);
1375 usb_kill_urb(pegasus->intr_urb);
1376 }
1377 intf->dev.power.power_state = PMSG_SUSPEND;
1378 return 0;
1379 }
1380
1381 static int pegasus_resume (struct usb_interface *intf)
1382 {
1383 struct pegasus *pegasus = usb_get_intfdata(intf);
1384
1385 intf->dev.power.power_state = PMSG_ON;
1386 netif_device_attach (pegasus->net);
1387 if (netif_running(pegasus->net)) {
1388 pegasus->rx_urb->status = 0;
1389 pegasus->rx_urb->actual_length = 0;
1390 read_bulk_callback(pegasus->rx_urb, NULL);
1391
1392 pegasus->intr_urb->status = 0;
1393 pegasus->intr_urb->actual_length = 0;
1394 intr_callback(pegasus->intr_urb, NULL);
1395
1396 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1397 CARRIER_CHECK_DELAY);
1398 }
1399 return 0;
1400 }
1401
1402 static struct usb_driver pegasus_driver = {
1403 .name = driver_name,
1404 .probe = pegasus_probe,
1405 .disconnect = pegasus_disconnect,
1406 .id_table = pegasus_ids,
1407 .suspend = pegasus_suspend,
1408 .resume = pegasus_resume,
1409 };
1410
1411 static int __init pegasus_init(void)
1412 {
1413 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1414 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1415 if (!pegasus_workqueue)
1416 return -ENOMEM;
1417 return usb_register(&pegasus_driver);
1418 }
1419
1420 static void __exit pegasus_exit(void)
1421 {
1422 destroy_workqueue(pegasus_workqueue);
1423 usb_deregister(&pegasus_driver);
1424 }
1425
1426 module_init(pegasus_init);
1427 module_exit(pegasus_exit);
linux-next