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[PATCH] USB: fix pegasus driver
[firewire-audio.git] / drivers / usb / net / pegasus.c
blob6a4ffe6c39771c13f883c78401cca24e529ef87a
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 * If the packet is unreasonably long, quietly drop it rather than
652 * kernel panicing by calling skb_put.
653 */
654 if (pkt_len > PEGASUS_MTU)
655 goto goon;
656
657 /*
658 * at this point we are sure pegasus->rx_skb != NULL
659 * so we go ahead and pass up the packet.
660 */
661 skb_put(pegasus->rx_skb, pkt_len);
662 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
663 netif_rx(pegasus->rx_skb);
664 pegasus->stats.rx_packets++;
665 pegasus->stats.rx_bytes += pkt_len;
666
667 if (pegasus->flags & PEGASUS_UNPLUG)
668 return;
669
670 spin_lock(&pegasus->rx_pool_lock);
671 pegasus->rx_skb = pull_skb(pegasus);
672 spin_unlock(&pegasus->rx_pool_lock);
673
674 if (pegasus->rx_skb == NULL)
675 goto tl_sched;
676 goon:
677 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
678 usb_rcvbulkpipe(pegasus->usb, 1),
679 pegasus->rx_skb->data, PEGASUS_MTU + 8,
680 read_bulk_callback, pegasus);
681 if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
682 pegasus->flags |= PEGASUS_RX_URB_FAIL;
683 goto tl_sched;
684 } else {
685 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
686 }
687
688 return;
689
690 tl_sched:
691 tasklet_schedule(&pegasus->rx_tl);
692 }
693
694 static void rx_fixup(unsigned long data)
695 {
696 pegasus_t *pegasus;
697 unsigned long flags;
698
699 pegasus = (pegasus_t *) data;
700 if (pegasus->flags & PEGASUS_UNPLUG)
701 return;
702
703 spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
704 fill_skb_pool(pegasus);
705 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
706 if (pegasus->rx_skb)
707 goto try_again;
708 if (pegasus->rx_skb == NULL) {
709 pegasus->rx_skb = pull_skb(pegasus);
710 }
711 if (pegasus->rx_skb == NULL) {
712 if (netif_msg_rx_err(pegasus))
713 printk(KERN_WARNING "%s: low on memory\n",
714 pegasus->net->name);
715 tasklet_schedule(&pegasus->rx_tl);
716 goto done;
717 }
718 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
719 usb_rcvbulkpipe(pegasus->usb, 1),
720 pegasus->rx_skb->data, PEGASUS_MTU + 8,
721 read_bulk_callback, pegasus);
722 try_again:
723 if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
724 pegasus->flags |= PEGASUS_RX_URB_FAIL;
725 tasklet_schedule(&pegasus->rx_tl);
726 } else {
727 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
728 }
729 done:
730 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
731 }
732
733 static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
734 {
735 pegasus_t *pegasus = urb->context;
736 struct net_device *net = pegasus->net;
737
738 if (!pegasus)
739 return;
740
741 if (!netif_device_present(net) || !netif_running(net))
742 return;
743
744 switch (urb->status) {
745 case -EPIPE:
746 /* FIXME schedule_work() to clear the tx halt */
747 netif_stop_queue(net);
748 if (netif_msg_tx_err(pegasus))
749 printk(KERN_WARNING "%s: no tx stall recovery\n",
750 net->name);
751 return;
752 case -ENOENT:
753 case -ECONNRESET:
754 case -ESHUTDOWN:
755 if (netif_msg_ifdown(pegasus))
756 pr_debug("%s: tx unlink, %d\n", net->name, urb->status);
757 return;
758 default:
759 if (netif_msg_tx_err(pegasus))
760 pr_info("%s: TX status %d\n", net->name, urb->status);
761 /* FALL THROUGH */
762 case 0:
763 break;
764 }
765
766 net->trans_start = jiffies;
767 netif_wake_queue(net);
768 }
769
770 static void intr_callback(struct urb *urb, struct pt_regs *regs)
771 {
772 pegasus_t *pegasus = urb->context;
773 struct net_device *net;
774 int status;
775
776 if (!pegasus)
777 return;
778 net = pegasus->net;
779
780 switch (urb->status) {
781 case 0:
782 break;
783 case -ECONNRESET: /* unlink */
784 case -ENOENT:
785 case -ESHUTDOWN:
786 return;
787 default:
788 /* some Pegasus-I products report LOTS of data
789 * toggle errors... avoid log spamming
790 */
791 if (netif_msg_timer(pegasus))
792 pr_debug("%s: intr status %d\n", net->name,
793 urb->status);
794 }
795
796 if (urb->actual_length >= 6) {
797 u8 * d = urb->transfer_buffer;
798
799 /* byte 0 == tx_status1, reg 2B */
800 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
801 |LATE_COL|JABBER_TIMEOUT)) {
802 pegasus->stats.tx_errors++;
803 if (d[0] & TX_UNDERRUN)
804 pegasus->stats.tx_fifo_errors++;
805 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
806 pegasus->stats.tx_aborted_errors++;
807 if (d[0] & LATE_COL)
808 pegasus->stats.tx_window_errors++;
809 }
810
811 /* d[5].LINK_STATUS lies on some adapters.
812 * d[0].NO_CARRIER kicks in only with failed TX.
813 * ... so monitoring with MII may be safest.
814 */
815 if (d[0] & NO_CARRIER)
816 netif_carrier_off(net);
817 else
818 netif_carrier_on(net);
819
820 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
821 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
822 }
823
824 status = usb_submit_urb(urb, SLAB_ATOMIC);
825 if (status && netif_msg_timer(pegasus))
826 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
827 net->name, status);
828 }
829
830 static void pegasus_tx_timeout(struct net_device *net)
831 {
832 pegasus_t *pegasus = netdev_priv(net);
833 if (netif_msg_timer(pegasus))
834 printk(KERN_WARNING "%s: tx timeout\n", net->name);
835 usb_unlink_urb(pegasus->tx_urb);
836 pegasus->stats.tx_errors++;
837 }
838
839 static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
840 {
841 pegasus_t *pegasus = netdev_priv(net);
842 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
843 int res;
844 __u16 l16 = skb->len;
845
846 netif_stop_queue(net);
847
848 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
849 memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
850 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
851 usb_sndbulkpipe(pegasus->usb, 2),
852 pegasus->tx_buff, count,
853 write_bulk_callback, pegasus);
854 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
855 if (netif_msg_tx_err(pegasus))
856 printk(KERN_WARNING "%s: fail tx, %d\n",
857 net->name, res);
858 switch (res) {
859 case -EPIPE: /* stall, or disconnect from TT */
860 /* cleanup should already have been scheduled */
861 break;
862 case -ENODEV: /* disconnect() upcoming */
863 break;
864 default:
865 pegasus->stats.tx_errors++;
866 netif_start_queue(net);
867 }
868 } else {
869 pegasus->stats.tx_packets++;
870 pegasus->stats.tx_bytes += skb->len;
871 net->trans_start = jiffies;
872 }
873 dev_kfree_skb(skb);
874
875 return 0;
876 }
877
878 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
879 {
880 return &((pegasus_t *) netdev_priv(dev))->stats;
881 }
882
883 static inline void disable_net_traffic(pegasus_t * pegasus)
884 {
885 int tmp = 0;
886 int ret;
887
888 ret = set_registers(pegasus, EthCtrl0, 2, &tmp);
889 }
890
891 static inline void get_interrupt_interval(pegasus_t * pegasus)
892 {
893 __u8 data[2];
894
895 read_eprom_word(pegasus, 4, (__u16 *) data);
896 if (pegasus->usb->speed != USB_SPEED_HIGH) {
897 if (data[1] < 0x80) {
898 if (netif_msg_timer(pegasus))
899 dev_info(&pegasus->intf->dev, "intr interval "
900 "changed from %ums to %ums\n",
901 data[1], 0x80);
902 data[1] = 0x80;
903 #ifdef PEGASUS_WRITE_EEPROM
904 write_eprom_word(pegasus, 4, *(__u16 *) data);
905 #endif
906 }
907 }
908 pegasus->intr_interval = data[1];
909 }
910
911 static void set_carrier(struct net_device *net)
912 {
913 pegasus_t *pegasus = netdev_priv(net);
914 u16 tmp;
915
916 if (!read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
917 return;
918
919 if (tmp & BMSR_LSTATUS)
920 netif_carrier_on(net);
921 else
922 netif_carrier_off(net);
923 }
924
925 static void free_all_urbs(pegasus_t * pegasus)
926 {
927 usb_free_urb(pegasus->intr_urb);
928 usb_free_urb(pegasus->tx_urb);
929 usb_free_urb(pegasus->rx_urb);
930 usb_free_urb(pegasus->ctrl_urb);
931 }
932
933 static void unlink_all_urbs(pegasus_t * pegasus)
934 {
935 usb_kill_urb(pegasus->intr_urb);
936 usb_kill_urb(pegasus->tx_urb);
937 usb_kill_urb(pegasus->rx_urb);
938 usb_kill_urb(pegasus->ctrl_urb);
939 }
940
941 static int alloc_urbs(pegasus_t * pegasus)
942 {
943 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
944 if (!pegasus->ctrl_urb) {
945 return 0;
946 }
947 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
948 if (!pegasus->rx_urb) {
949 usb_free_urb(pegasus->ctrl_urb);
950 return 0;
951 }
952 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
953 if (!pegasus->tx_urb) {
954 usb_free_urb(pegasus->rx_urb);
955 usb_free_urb(pegasus->ctrl_urb);
956 return 0;
957 }
958 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
959 if (!pegasus->intr_urb) {
960 usb_free_urb(pegasus->tx_urb);
961 usb_free_urb(pegasus->rx_urb);
962 usb_free_urb(pegasus->ctrl_urb);
963 return 0;
964 }
965
966 return 1;
967 }
968
969 static int pegasus_open(struct net_device *net)
970 {
971 pegasus_t *pegasus = netdev_priv(net);
972 int res;
973
974 if (pegasus->rx_skb == NULL)
975 pegasus->rx_skb = pull_skb(pegasus);
976 /*
977 ** Note: no point to free the pool. it is empty :-)
978 */
979 if (!pegasus->rx_skb)
980 return -ENOMEM;
981
982 res = set_registers(pegasus, EthID, 6, net->dev_addr);
983
984 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
985 usb_rcvbulkpipe(pegasus->usb, 1),
986 pegasus->rx_skb->data, PEGASUS_MTU + 8,
987 read_bulk_callback, pegasus);
988 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
989 if (netif_msg_ifup(pegasus))
990 pr_debug("%s: failed rx_urb, %d", net->name, res);
991 goto exit;
992 }
993
994 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
995 usb_rcvintpipe(pegasus->usb, 3),
996 pegasus->intr_buff, sizeof (pegasus->intr_buff),
997 intr_callback, pegasus, pegasus->intr_interval);
998 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
999 if (netif_msg_ifup(pegasus))
1000 pr_debug("%s: failed intr_urb, %d\n", net->name, res);
1001 usb_kill_urb(pegasus->rx_urb);
1002 goto exit;
1003 }
1004 if ((res = enable_net_traffic(net, pegasus->usb))) {
1005 if (netif_msg_ifup(pegasus))
1006 pr_debug("%s: can't enable_net_traffic() - %d\n",
1007 net->name, res);
1008 res = -EIO;
1009 usb_kill_urb(pegasus->rx_urb);
1010 usb_kill_urb(pegasus->intr_urb);
1011 free_skb_pool(pegasus);
1012 goto exit;
1013 }
1014 set_carrier(net);
1015 netif_start_queue(net);
1016 if (netif_msg_ifup(pegasus))
1017 pr_debug("%s: open\n", net->name);
1018 res = 0;
1019 exit:
1020 return res;
1021 }
1022
1023 static int pegasus_close(struct net_device *net)
1024 {
1025 pegasus_t *pegasus = netdev_priv(net);
1026
1027 netif_stop_queue(net);
1028 if (!(pegasus->flags & PEGASUS_UNPLUG))
1029 disable_net_traffic(pegasus);
1030 tasklet_kill(&pegasus->rx_tl);
1031 unlink_all_urbs(pegasus);
1032
1033 return 0;
1034 }
1035
1036 static void pegasus_get_drvinfo(struct net_device *dev,
1037 struct ethtool_drvinfo *info)
1038 {
1039 pegasus_t *pegasus = netdev_priv(dev);
1040 strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1041 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1042 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1043 }
1044
1045 /* also handles three patterns of some kind in hardware */
1046 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
1047
1048 static void
1049 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1050 {
1051 pegasus_t *pegasus = netdev_priv(dev);
1052
1053 wol->supported = WAKE_MAGIC | WAKE_PHY;
1054 wol->wolopts = pegasus->wolopts;
1055 }
1056
1057 static int
1058 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1059 {
1060 pegasus_t *pegasus = netdev_priv(dev);
1061 u8 reg78 = 0x04;
1062
1063 if (wol->wolopts & ~WOL_SUPPORTED)
1064 return -EINVAL;
1065
1066 if (wol->wolopts & WAKE_MAGIC)
1067 reg78 |= 0x80;
1068 if (wol->wolopts & WAKE_PHY)
1069 reg78 |= 0x40;
1070 /* FIXME this 0x10 bit still needs to get set in the chip... */
1071 if (wol->wolopts)
1072 pegasus->eth_regs[0] |= 0x10;
1073 else
1074 pegasus->eth_regs[0] &= ~0x10;
1075 pegasus->wolopts = wol->wolopts;
1076 return set_register(pegasus, WakeupControl, reg78);
1077 }
1078
1079 static inline void pegasus_reset_wol(struct net_device *dev)
1080 {
1081 struct ethtool_wolinfo wol;
1082
1083 memset(&wol, 0, sizeof wol);
1084 (void) pegasus_set_wol(dev, &wol);
1085 }
1086
1087 static int
1088 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1089 {
1090 pegasus_t *pegasus;
1091
1092 if (in_atomic())
1093 return 0;
1094
1095 pegasus = netdev_priv(dev);
1096 mii_ethtool_gset(&pegasus->mii, ecmd);
1097
1098 return 0;
1099 }
1100
1101 static int
1102 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1103 {
1104 pegasus_t *pegasus = netdev_priv(dev);
1105 return mii_ethtool_sset(&pegasus->mii, ecmd);
1106 }
1107
1108 static int pegasus_nway_reset(struct net_device *dev)
1109 {
1110 pegasus_t *pegasus = netdev_priv(dev);
1111 return mii_nway_restart(&pegasus->mii);
1112 }
1113
1114 static u32 pegasus_get_link(struct net_device *dev)
1115 {
1116 pegasus_t *pegasus = netdev_priv(dev);
1117 return mii_link_ok(&pegasus->mii);
1118 }
1119
1120 static u32 pegasus_get_msglevel(struct net_device *dev)
1121 {
1122 pegasus_t *pegasus = netdev_priv(dev);
1123 return pegasus->msg_enable;
1124 }
1125
1126 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1127 {
1128 pegasus_t *pegasus = netdev_priv(dev);
1129 pegasus->msg_enable = v;
1130 }
1131
1132 static struct ethtool_ops ops = {
1133 .get_drvinfo = pegasus_get_drvinfo,
1134 .get_settings = pegasus_get_settings,
1135 .set_settings = pegasus_set_settings,
1136 .nway_reset = pegasus_nway_reset,
1137 .get_link = pegasus_get_link,
1138 .get_msglevel = pegasus_get_msglevel,
1139 .set_msglevel = pegasus_set_msglevel,
1140 .get_wol = pegasus_get_wol,
1141 .set_wol = pegasus_set_wol,
1142 };
1143
1144 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1145 {
1146 __u16 *data = (__u16 *) & rq->ifr_ifru;
1147 pegasus_t *pegasus = netdev_priv(net);
1148 int res;
1149
1150 switch (cmd) {
1151 case SIOCDEVPRIVATE:
1152 data[0] = pegasus->phy;
1153 case SIOCDEVPRIVATE + 1:
1154 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1155 res = 0;
1156 break;
1157 case SIOCDEVPRIVATE + 2:
1158 if (!capable(CAP_NET_ADMIN))
1159 return -EPERM;
1160 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1161 res = 0;
1162 break;
1163 default:
1164 res = -EOPNOTSUPP;
1165 }
1166 return res;
1167 }
1168
1169 static void pegasus_set_multicast(struct net_device *net)
1170 {
1171 pegasus_t *pegasus = netdev_priv(net);
1172
1173 if (net->flags & IFF_PROMISC) {
1174 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1175 if (netif_msg_link(pegasus))
1176 pr_info("%s: Promiscuous mode enabled.\n", net->name);
1177 } else if (net->mc_count ||
1178 (net->flags & IFF_ALLMULTI)) {
1179 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1180 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1181 if (netif_msg_link(pegasus))
1182 pr_info("%s: set allmulti\n", net->name);
1183 } else {
1184 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1185 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1186 }
1187
1188 pegasus->flags |= ETH_REGS_CHANGE;
1189 ctrl_callback(pegasus->ctrl_urb, NULL);
1190 }
1191
1192 static __u8 mii_phy_probe(pegasus_t * pegasus)
1193 {
1194 int i;
1195 __u16 tmp;
1196
1197 for (i = 0; i < 32; i++) {
1198 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1199 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1200 continue;
1201 else
1202 return i;
1203 }
1204
1205 return 0xff;
1206 }
1207
1208 static inline void setup_pegasus_II(pegasus_t * pegasus)
1209 {
1210 __u8 data = 0xa5;
1211 int ret;
1212
1213 ret = set_register(pegasus, Reg1d, 0);
1214 ret = set_register(pegasus, Reg7b, 1);
1215 mdelay(100);
1216 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1217 ret = set_register(pegasus, Reg7b, 0);
1218 else
1219 ret = set_register(pegasus, Reg7b, 2);
1220
1221 ret = set_register(pegasus, 0x83, data);
1222 ret = get_registers(pegasus, 0x83, 1, &data);
1223
1224 if (data == 0xa5) {
1225 pegasus->chip = 0x8513;
1226 } else {
1227 pegasus->chip = 0;
1228 }
1229
1230 ret = set_register(pegasus, 0x80, 0xc0);
1231 ret = set_register(pegasus, 0x83, 0xff);
1232 ret = set_register(pegasus, 0x84, 0x01);
1233
1234 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1235 ret = set_register(pegasus, Reg81, 6);
1236 else
1237 ret = set_register(pegasus, Reg81, 2);
1238 }
1239
1240
1241 static struct workqueue_struct *pegasus_workqueue = NULL;
1242 #define CARRIER_CHECK_DELAY (2 * HZ)
1243
1244 static void check_carrier(void *data)
1245 {
1246 pegasus_t *pegasus = data;
1247 set_carrier(pegasus->net);
1248 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1249 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1250 CARRIER_CHECK_DELAY);
1251 }
1252 }
1253
1254 static int pegasus_probe(struct usb_interface *intf,
1255 const struct usb_device_id *id)
1256 {
1257 struct usb_device *dev = interface_to_usbdev(intf);
1258 struct net_device *net;
1259 pegasus_t *pegasus;
1260 int dev_index = id - pegasus_ids;
1261 int res = -ENOMEM;
1262
1263 usb_get_dev(dev);
1264 net = alloc_etherdev(sizeof(struct pegasus));
1265 if (!net) {
1266 dev_err(&intf->dev, "can't allocate %s\n", "device");
1267 goto out;
1268 }
1269
1270 pegasus = netdev_priv(net);
1271 memset(pegasus, 0, sizeof (struct pegasus));
1272 pegasus->dev_index = dev_index;
1273 init_waitqueue_head(&pegasus->ctrl_wait);
1274
1275 if (!alloc_urbs(pegasus)) {
1276 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1277 goto out1;
1278 }
1279
1280 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1281
1282 INIT_WORK(&pegasus->carrier_check, check_carrier, pegasus);
1283
1284 pegasus->intf = intf;
1285 pegasus->usb = dev;
1286 pegasus->net = net;
1287 SET_MODULE_OWNER(net);
1288 net->open = pegasus_open;
1289 net->stop = pegasus_close;
1290 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1291 net->tx_timeout = pegasus_tx_timeout;
1292 net->do_ioctl = pegasus_ioctl;
1293 net->hard_start_xmit = pegasus_start_xmit;
1294 net->set_multicast_list = pegasus_set_multicast;
1295 net->get_stats = pegasus_netdev_stats;
1296 SET_ETHTOOL_OPS(net, &ops);
1297 pegasus->mii.dev = net;
1298 pegasus->mii.mdio_read = mdio_read;
1299 pegasus->mii.mdio_write = mdio_write;
1300 pegasus->mii.phy_id_mask = 0x1f;
1301 pegasus->mii.reg_num_mask = 0x1f;
1302 spin_lock_init(&pegasus->rx_pool_lock);
1303 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1304 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1305
1306 pegasus->features = usb_dev_id[dev_index].private;
1307 get_interrupt_interval(pegasus);
1308 if (reset_mac(pegasus)) {
1309 dev_err(&intf->dev, "can't reset MAC\n");
1310 res = -EIO;
1311 goto out2;
1312 }
1313 set_ethernet_addr(pegasus);
1314 fill_skb_pool(pegasus);
1315 if (pegasus->features & PEGASUS_II) {
1316 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1317 setup_pegasus_II(pegasus);
1318 }
1319 pegasus->phy = mii_phy_probe(pegasus);
1320 if (pegasus->phy == 0xff) {
1321 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1322 pegasus->phy = 1;
1323 }
1324 pegasus->mii.phy_id = pegasus->phy;
1325 usb_set_intfdata(intf, pegasus);
1326 SET_NETDEV_DEV(net, &intf->dev);
1327 pegasus_reset_wol(net);
1328 res = register_netdev(net);
1329 if (res)
1330 goto out3;
1331 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1332 CARRIER_CHECK_DELAY);
1333
1334 dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n",
1335 net->name,
1336 usb_dev_id[dev_index].name,
1337 net->dev_addr [0], net->dev_addr [1],
1338 net->dev_addr [2], net->dev_addr [3],
1339 net->dev_addr [4], net->dev_addr [5]);
1340 return 0;
1341
1342 out3:
1343 usb_set_intfdata(intf, NULL);
1344 free_skb_pool(pegasus);
1345 out2:
1346 free_all_urbs(pegasus);
1347 out1:
1348 free_netdev(net);
1349 out:
1350 usb_put_dev(dev);
1351 return res;
1352 }
1353
1354 static void pegasus_disconnect(struct usb_interface *intf)
1355 {
1356 struct pegasus *pegasus = usb_get_intfdata(intf);
1357
1358 usb_set_intfdata(intf, NULL);
1359 if (!pegasus) {
1360 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1361 return;
1362 }
1363
1364 pegasus->flags |= PEGASUS_UNPLUG;
1365 cancel_delayed_work(&pegasus->carrier_check);
1366 unregister_netdev(pegasus->net);
1367 usb_put_dev(interface_to_usbdev(intf));
1368 unlink_all_urbs(pegasus);
1369 free_all_urbs(pegasus);
1370 free_skb_pool(pegasus);
1371 if (pegasus->rx_skb)
1372 dev_kfree_skb(pegasus->rx_skb);
1373 free_netdev(pegasus->net);
1374 }
1375
1376 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1377 {
1378 struct pegasus *pegasus = usb_get_intfdata(intf);
1379
1380 netif_device_detach (pegasus->net);
1381 if (netif_running(pegasus->net)) {
1382 cancel_delayed_work(&pegasus->carrier_check);
1383
1384 usb_kill_urb(pegasus->rx_urb);
1385 usb_kill_urb(pegasus->intr_urb);
1386 }
1387 intf->dev.power.power_state = PMSG_SUSPEND;
1388 return 0;
1389 }
1390
1391 static int pegasus_resume (struct usb_interface *intf)
1392 {
1393 struct pegasus *pegasus = usb_get_intfdata(intf);
1394
1395 intf->dev.power.power_state = PMSG_ON;
1396 netif_device_attach (pegasus->net);
1397 if (netif_running(pegasus->net)) {
1398 pegasus->rx_urb->status = 0;
1399 pegasus->rx_urb->actual_length = 0;
1400 read_bulk_callback(pegasus->rx_urb, NULL);
1401
1402 pegasus->intr_urb->status = 0;
1403 pegasus->intr_urb->actual_length = 0;
1404 intr_callback(pegasus->intr_urb, NULL);
1405
1406 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1407 CARRIER_CHECK_DELAY);
1408 }
1409 return 0;
1410 }
1411
1412 static struct usb_driver pegasus_driver = {
1413 .name = driver_name,
1414 .probe = pegasus_probe,
1415 .disconnect = pegasus_disconnect,
1416 .id_table = pegasus_ids,
1417 .suspend = pegasus_suspend,
1418 .resume = pegasus_resume,
1419 };
1420
1421 static int __init pegasus_init(void)
1422 {
1423 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1424 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1425 if (!pegasus_workqueue)
1426 return -ENOMEM;
1427 return usb_register(&pegasus_driver);
1428 }
1429
1430 static void __exit pegasus_exit(void)
1431 {
1432 destroy_workqueue(pegasus_workqueue);
1433 usb_deregister(&pegasus_driver);
1434 }
1435
1436 module_init(pegasus_init);
1437 module_exit(pegasus_exit);
AMDTP streaming driver for the Linux FireWire stack (Juju)