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Fix dnotify/close race
[linux-2.6.22.y-op.git] / drivers / net / usb / pegasus.c
bloba05fd97e5bc2e0c98b67664142767501611cd293
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 #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 */
48 #define DRIVER_VERSION "v0.6.14 (2006/09/27)"
49 #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
50 #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
51
52 static 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
58 static int loopback = 0;
59 static int mii_mode = 0;
60 static char *devid=NULL;
61
62 static 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
67 {NULL, 0, 0, 0},
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
80 MODULE_AUTHOR(DRIVER_AUTHOR);
81 MODULE_DESCRIPTION(DRIVER_DESC);
82 MODULE_LICENSE("GPL");
83 module_param(loopback, bool, 0);
84 module_param(mii_mode, bool, 0);
85 module_param(devid, charp, 0);
86 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
87 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
88 MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
89
90 /* use ethtool to change the level for any given device */
91 static int msg_level = -1;
92 module_param (msg_level, int, 0);
93 MODULE_PARM_DESC (msg_level, "Override default message level");
94
95 MODULE_DEVICE_TABLE(usb, pegasus_ids);
96
97 static int update_eth_regs_async(pegasus_t *);
98 /* Aargh!!! I _really_ hate such tweaks */
99 static void ctrl_callback(struct urb *urb)
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))
121 dev_dbg(&pegasus->intf->dev, "%s, status %d\n",
122 __FUNCTION__, urb->status);
123 }
124 pegasus->flags &= ~ETH_REGS_CHANGED;
125 wake_up(&pegasus->ctrl_wait);
126 }
127
128 static 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))) {
166 set_current_state(TASK_RUNNING);
167 if (ret == -ENODEV)
168 netif_device_detach(pegasus->net);
169 if (netif_msg_drv(pegasus))
170 dev_err(&pegasus->intf->dev, "%s, status %d\n",
171 __FUNCTION__, ret);
172 goto out;
173 }
174
175 schedule();
176 out:
177 remove_wait_queue(&pegasus->ctrl_wait, &wait);
178 memcpy(data, buffer, size);
179 kfree(buffer);
180
181 return ret;
182 }
183
184 static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
185 void *data)
186 {
187 int ret;
188 char *buffer;
189 DECLARE_WAITQUEUE(wait, current);
190
191 buffer = kmalloc(size, GFP_KERNEL);
192 if (!buffer) {
193 if (netif_msg_drv(pegasus))
194 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
195 __FUNCTION__);
196 return -ENOMEM;
197 }
198 memcpy(buffer, data, size);
199
200 add_wait_queue(&pegasus->ctrl_wait, &wait);
201 set_current_state(TASK_UNINTERRUPTIBLE);
202 while (pegasus->flags & ETH_REGS_CHANGED)
203 schedule();
204 remove_wait_queue(&pegasus->ctrl_wait, &wait);
205 set_current_state(TASK_RUNNING);
206
207 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
208 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
209 pegasus->dr.wValue = cpu_to_le16(0);
210 pegasus->dr.wIndex = cpu_to_le16p(&indx);
211 pegasus->dr.wLength = cpu_to_le16p(&size);
212 pegasus->ctrl_urb->transfer_buffer_length = size;
213
214 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
215 usb_sndctrlpipe(pegasus->usb, 0),
216 (char *) &pegasus->dr,
217 buffer, size, ctrl_callback, pegasus);
218
219 add_wait_queue(&pegasus->ctrl_wait, &wait);
220 set_current_state(TASK_UNINTERRUPTIBLE);
221
222 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
223 if (ret == -ENODEV)
224 netif_device_detach(pegasus->net);
225 if (netif_msg_drv(pegasus))
226 dev_err(&pegasus->intf->dev, "%s, status %d\n",
227 __FUNCTION__, ret);
228 goto out;
229 }
230
231 schedule();
232 out:
233 remove_wait_queue(&pegasus->ctrl_wait, &wait);
234 kfree(buffer);
235
236 return ret;
237 }
238
239 static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
240 {
241 int ret;
242 char *tmp;
243 DECLARE_WAITQUEUE(wait, current);
244
245 tmp = kmalloc(1, GFP_KERNEL);
246 if (!tmp) {
247 if (netif_msg_drv(pegasus))
248 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
249 __FUNCTION__);
250 return -ENOMEM;
251 }
252 memcpy(tmp, &data, 1);
253 add_wait_queue(&pegasus->ctrl_wait, &wait);
254 set_current_state(TASK_UNINTERRUPTIBLE);
255 while (pegasus->flags & ETH_REGS_CHANGED)
256 schedule();
257 remove_wait_queue(&pegasus->ctrl_wait, &wait);
258 set_current_state(TASK_RUNNING);
259
260 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
261 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
262 pegasus->dr.wValue = cpu_to_le16(data);
263 pegasus->dr.wIndex = cpu_to_le16p(&indx);
264 pegasus->dr.wLength = cpu_to_le16(1);
265 pegasus->ctrl_urb->transfer_buffer_length = 1;
266
267 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
268 usb_sndctrlpipe(pegasus->usb, 0),
269 (char *) &pegasus->dr,
270 tmp, 1, ctrl_callback, pegasus);
271
272 add_wait_queue(&pegasus->ctrl_wait, &wait);
273 set_current_state(TASK_UNINTERRUPTIBLE);
274
275 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
276 if (ret == -ENODEV)
277 netif_device_detach(pegasus->net);
278 if (netif_msg_drv(pegasus))
279 dev_err(&pegasus->intf->dev, "%s, status %d\n",
280 __FUNCTION__, ret);
281 goto out;
282 }
283
284 schedule();
285 out:
286 remove_wait_queue(&pegasus->ctrl_wait, &wait);
287 kfree(tmp);
288
289 return ret;
290 }
291
292 static int update_eth_regs_async(pegasus_t * pegasus)
293 {
294 int ret;
295
296 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
297 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
298 pegasus->dr.wValue = 0;
299 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
300 pegasus->dr.wLength = cpu_to_le16(3);
301 pegasus->ctrl_urb->transfer_buffer_length = 3;
302
303 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
304 usb_sndctrlpipe(pegasus->usb, 0),
305 (char *) &pegasus->dr,
306 pegasus->eth_regs, 3, ctrl_callback, pegasus);
307
308 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
309 if (ret == -ENODEV)
310 netif_device_detach(pegasus->net);
311 if (netif_msg_drv(pegasus))
312 dev_err(&pegasus->intf->dev, "%s, status %d\n",
313 __FUNCTION__, ret);
314 }
315
316 return ret;
317 }
318
319 /* Returns 0 on success, error on failure */
320 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
321 {
322 int i;
323 __u8 data[4] = { phy, 0, 0, indx };
324 __le16 regdi;
325 int ret;
326
327 set_register(pegasus, PhyCtrl, 0);
328 set_registers(pegasus, PhyAddr, sizeof (data), data);
329 set_register(pegasus, PhyCtrl, (indx | PHY_READ));
330 for (i = 0; i < REG_TIMEOUT; i++) {
331 ret = get_registers(pegasus, PhyCtrl, 1, data);
332 if (ret == -ESHUTDOWN)
333 goto fail;
334 if (data[0] & PHY_DONE)
335 break;
336 }
337 if (i < REG_TIMEOUT) {
338 ret = get_registers(pegasus, PhyData, 2, &regdi);
339 *regd = le16_to_cpu(regdi);
340 return ret;
341 }
342 fail:
343 if (netif_msg_drv(pegasus))
344 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
345
346 return ret;
347 }
348
349 static int mdio_read(struct net_device *dev, int phy_id, int loc)
350 {
351 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
352 u16 res;
353
354 read_mii_word(pegasus, phy_id, loc, &res);
355 return (int)res;
356 }
357
358 static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
359 {
360 int i;
361 __u8 data[4] = { phy, 0, 0, indx };
362 int ret;
363
364 data[1] = (u8) regd;
365 data[2] = (u8) (regd >> 8);
366 set_register(pegasus, PhyCtrl, 0);
367 set_registers(pegasus, PhyAddr, sizeof(data), data);
368 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
369 for (i = 0; i < REG_TIMEOUT; i++) {
370 ret = get_registers(pegasus, PhyCtrl, 1, data);
371 if (ret == -ESHUTDOWN)
372 goto fail;
373 if (data[0] & PHY_DONE)
374 break;
375 }
376 if (i < REG_TIMEOUT)
377 return ret;
378
379 fail:
380 if (netif_msg_drv(pegasus))
381 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
382 return -ETIMEDOUT;
383 }
384
385 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
386 {
387 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
388
389 write_mii_word(pegasus, phy_id, loc, val);
390 }
391
392 static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
393 {
394 int i;
395 __u8 tmp;
396 __le16 retdatai;
397 int ret;
398
399 set_register(pegasus, EpromCtrl, 0);
400 set_register(pegasus, EpromOffset, index);
401 set_register(pegasus, EpromCtrl, EPROM_READ);
402
403 for (i = 0; i < REG_TIMEOUT; i++) {
404 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
405 if (tmp & EPROM_DONE)
406 break;
407 if (ret == -ESHUTDOWN)
408 goto fail;
409 }
410 if (i < REG_TIMEOUT) {
411 ret = get_registers(pegasus, EpromData, 2, &retdatai);
412 *retdata = le16_to_cpu(retdatai);
413 return ret;
414 }
415
416 fail:
417 if (netif_msg_drv(pegasus))
418 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
419 return -ETIMEDOUT;
420 }
421
422 #ifdef PEGASUS_WRITE_EEPROM
423 static inline void enable_eprom_write(pegasus_t * pegasus)
424 {
425 __u8 tmp;
426 int ret;
427
428 get_registers(pegasus, EthCtrl2, 1, &tmp);
429 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
430 }
431
432 static inline void disable_eprom_write(pegasus_t * pegasus)
433 {
434 __u8 tmp;
435 int ret;
436
437 get_registers(pegasus, EthCtrl2, 1, &tmp);
438 set_register(pegasus, EpromCtrl, 0);
439 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
440 }
441
442 static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
443 {
444 int i;
445 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
446 int ret;
447
448 set_registers(pegasus, EpromOffset, 4, d);
449 enable_eprom_write(pegasus);
450 set_register(pegasus, EpromOffset, index);
451 set_registers(pegasus, EpromData, 2, &data);
452 set_register(pegasus, EpromCtrl, EPROM_WRITE);
453
454 for (i = 0; i < REG_TIMEOUT; i++) {
455 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
456 if (ret == -ESHUTDOWN)
457 goto fail;
458 if (tmp & EPROM_DONE)
459 break;
460 }
461 disable_eprom_write(pegasus);
462 if (i < REG_TIMEOUT)
463 return ret;
464 fail:
465 if (netif_msg_drv(pegasus))
466 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
467 return -ETIMEDOUT;
468 }
469 #endif /* PEGASUS_WRITE_EEPROM */
470
471 static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
472 {
473 int i;
474 __u16 w16;
475
476 for (i = 0; i < 3; i++) {
477 read_eprom_word(pegasus, i, &w16);
478 ((__le16 *) id)[i] = cpu_to_le16p(&w16);
479 }
480 }
481
482 static void set_ethernet_addr(pegasus_t * pegasus)
483 {
484 __u8 node_id[6];
485
486 if (pegasus->features & PEGASUS_II) {
487 get_registers(pegasus, 0x10, sizeof(node_id), node_id);
488 } else {
489 get_node_id(pegasus, node_id);
490 set_registers(pegasus, EthID, sizeof (node_id), node_id);
491 }
492 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
493 }
494
495 static inline int reset_mac(pegasus_t * pegasus)
496 {
497 __u8 data = 0x8;
498 int i;
499
500 set_register(pegasus, EthCtrl1, data);
501 for (i = 0; i < REG_TIMEOUT; i++) {
502 get_registers(pegasus, EthCtrl1, 1, &data);
503 if (~data & 0x08) {
504 if (loopback & 1)
505 break;
506 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
507 set_register(pegasus, Gpio1, 0x34);
508 else
509 set_register(pegasus, Gpio1, 0x26);
510 set_register(pegasus, Gpio0, pegasus->features);
511 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
512 break;
513 }
514 }
515 if (i == REG_TIMEOUT)
516 return -ETIMEDOUT;
517
518 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
519 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
520 set_register(pegasus, Gpio0, 0x24);
521 set_register(pegasus, Gpio0, 0x26);
522 }
523 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
524 __u16 auxmode;
525 read_mii_word(pegasus, 3, 0x1b, &auxmode);
526 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
527 }
528
529 return 0;
530 }
531
532 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
533 {
534 __u16 linkpart;
535 __u8 data[4];
536 pegasus_t *pegasus = netdev_priv(dev);
537 int ret;
538
539 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
540 data[0] = 0xc9;
541 data[1] = 0;
542 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
543 data[1] |= 0x20; /* set full duplex */
544 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
545 data[1] |= 0x10; /* set 100 Mbps */
546 if (mii_mode)
547 data[1] = 0;
548 data[2] = (loopback & 1) ? 0x09 : 0x01;
549
550 memcpy(pegasus->eth_regs, data, sizeof (data));
551 ret = set_registers(pegasus, EthCtrl0, 3, data);
552
553 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
554 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
555 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
556 u16 auxmode;
557 read_mii_word(pegasus, 0, 0x1b, &auxmode);
558 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
559 }
560
561 return ret;
562 }
563
564 static void fill_skb_pool(pegasus_t * pegasus)
565 {
566 int i;
567
568 for (i = 0; i < RX_SKBS; i++) {
569 if (pegasus->rx_pool[i])
570 continue;
571 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
572 /*
573 ** we give up if the allocation fail. the tasklet will be
574 ** rescheduled again anyway...
575 */
576 if (pegasus->rx_pool[i] == NULL)
577 return;
578 skb_reserve(pegasus->rx_pool[i], 2);
579 }
580 }
581
582 static void free_skb_pool(pegasus_t * pegasus)
583 {
584 int i;
585
586 for (i = 0; i < RX_SKBS; i++) {
587 if (pegasus->rx_pool[i]) {
588 dev_kfree_skb(pegasus->rx_pool[i]);
589 pegasus->rx_pool[i] = NULL;
590 }
591 }
592 }
593
594 static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
595 {
596 int i;
597 struct sk_buff *skb;
598
599 for (i = 0; i < RX_SKBS; i++) {
600 if (likely(pegasus->rx_pool[i] != NULL)) {
601 skb = pegasus->rx_pool[i];
602 pegasus->rx_pool[i] = NULL;
603 return skb;
604 }
605 }
606 return NULL;
607 }
608
609 static void read_bulk_callback(struct urb *urb)
610 {
611 pegasus_t *pegasus = urb->context;
612 struct net_device *net;
613 int rx_status, count = urb->actual_length;
614 u8 *buf = urb->transfer_buffer;
615 __u16 pkt_len;
616
617 if (!pegasus)
618 return;
619
620 net = pegasus->net;
621 if (!netif_device_present(net) || !netif_running(net))
622 return;
623
624 switch (urb->status) {
625 case 0:
626 break;
627 case -ETIME:
628 if (netif_msg_rx_err(pegasus))
629 pr_debug("%s: reset MAC\n", net->name);
630 pegasus->flags &= ~PEGASUS_RX_BUSY;
631 break;
632 case -EPIPE: /* stall, or disconnect from TT */
633 /* FIXME schedule work to clear the halt */
634 if (netif_msg_rx_err(pegasus))
635 printk(KERN_WARNING "%s: no rx stall recovery\n",
636 net->name);
637 return;
638 case -ENOENT:
639 case -ECONNRESET:
640 case -ESHUTDOWN:
641 if (netif_msg_ifdown(pegasus))
642 pr_debug("%s: rx unlink, %d\n", net->name, urb->status);
643 return;
644 default:
645 if (netif_msg_rx_err(pegasus))
646 pr_debug("%s: RX status %d\n", net->name, urb->status);
647 goto goon;
648 }
649
650 if (!count || count < 4)
651 goto goon;
652
653 rx_status = buf[count - 2];
654 if (rx_status & 0x1e) {
655 if (netif_msg_rx_err(pegasus))
656 pr_debug("%s: RX packet error %x\n",
657 net->name, rx_status);
658 pegasus->stats.rx_errors++;
659 if (rx_status & 0x06) // long or runt
660 pegasus->stats.rx_length_errors++;
661 if (rx_status & 0x08)
662 pegasus->stats.rx_crc_errors++;
663 if (rx_status & 0x10) // extra bits
664 pegasus->stats.rx_frame_errors++;
665 goto goon;
666 }
667 if (pegasus->chip == 0x8513) {
668 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
669 pkt_len &= 0x0fff;
670 pegasus->rx_skb->data += 2;
671 } else {
672 pkt_len = buf[count - 3] << 8;
673 pkt_len += buf[count - 4];
674 pkt_len &= 0xfff;
675 pkt_len -= 8;
676 }
677
678 /*
679 * If the packet is unreasonably long, quietly drop it rather than
680 * kernel panicing by calling skb_put.
681 */
682 if (pkt_len > PEGASUS_MTU)
683 goto goon;
684
685 /*
686 * at this point we are sure pegasus->rx_skb != NULL
687 * so we go ahead and pass up the packet.
688 */
689 skb_put(pegasus->rx_skb, pkt_len);
690 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
691 netif_rx(pegasus->rx_skb);
692 pegasus->stats.rx_packets++;
693 pegasus->stats.rx_bytes += pkt_len;
694
695 if (pegasus->flags & PEGASUS_UNPLUG)
696 return;
697
698 spin_lock(&pegasus->rx_pool_lock);
699 pegasus->rx_skb = pull_skb(pegasus);
700 spin_unlock(&pegasus->rx_pool_lock);
701
702 if (pegasus->rx_skb == NULL)
703 goto tl_sched;
704 goon:
705 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
706 usb_rcvbulkpipe(pegasus->usb, 1),
707 pegasus->rx_skb->data, PEGASUS_MTU + 8,
708 read_bulk_callback, pegasus);
709 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
710 if (rx_status == -ENODEV)
711 netif_device_detach(pegasus->net);
712 else if (rx_status) {
713 pegasus->flags |= PEGASUS_RX_URB_FAIL;
714 goto tl_sched;
715 } else {
716 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
717 }
718
719 return;
720
721 tl_sched:
722 tasklet_schedule(&pegasus->rx_tl);
723 }
724
725 static void rx_fixup(unsigned long data)
726 {
727 pegasus_t *pegasus;
728 unsigned long flags;
729 int status;
730
731 pegasus = (pegasus_t *) data;
732 if (pegasus->flags & PEGASUS_UNPLUG)
733 return;
734
735 spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
736 fill_skb_pool(pegasus);
737 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
738 if (pegasus->rx_skb)
739 goto try_again;
740 if (pegasus->rx_skb == NULL) {
741 pegasus->rx_skb = pull_skb(pegasus);
742 }
743 if (pegasus->rx_skb == NULL) {
744 if (netif_msg_rx_err(pegasus))
745 printk(KERN_WARNING "%s: low on memory\n",
746 pegasus->net->name);
747 tasklet_schedule(&pegasus->rx_tl);
748 goto done;
749 }
750 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
751 usb_rcvbulkpipe(pegasus->usb, 1),
752 pegasus->rx_skb->data, PEGASUS_MTU + 8,
753 read_bulk_callback, pegasus);
754 try_again:
755 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
756 if (status == -ENODEV)
757 netif_device_detach(pegasus->net);
758 else if (status) {
759 pegasus->flags |= PEGASUS_RX_URB_FAIL;
760 tasklet_schedule(&pegasus->rx_tl);
761 } else {
762 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
763 }
764 done:
765 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
766 }
767
768 static void write_bulk_callback(struct urb *urb)
769 {
770 pegasus_t *pegasus = urb->context;
771 struct net_device *net = pegasus->net;
772
773 if (!pegasus)
774 return;
775
776 if (!netif_device_present(net) || !netif_running(net))
777 return;
778
779 switch (urb->status) {
780 case -EPIPE:
781 /* FIXME schedule_work() to clear the tx halt */
782 netif_stop_queue(net);
783 if (netif_msg_tx_err(pegasus))
784 printk(KERN_WARNING "%s: no tx stall recovery\n",
785 net->name);
786 return;
787 case -ENOENT:
788 case -ECONNRESET:
789 case -ESHUTDOWN:
790 if (netif_msg_ifdown(pegasus))
791 pr_debug("%s: tx unlink, %d\n", net->name, urb->status);
792 return;
793 default:
794 if (netif_msg_tx_err(pegasus))
795 pr_info("%s: TX status %d\n", net->name, urb->status);
796 /* FALL THROUGH */
797 case 0:
798 break;
799 }
800
801 net->trans_start = jiffies;
802 netif_wake_queue(net);
803 }
804
805 static void intr_callback(struct urb *urb)
806 {
807 pegasus_t *pegasus = urb->context;
808 struct net_device *net;
809 int status;
810
811 if (!pegasus)
812 return;
813 net = pegasus->net;
814
815 switch (urb->status) {
816 case 0:
817 break;
818 case -ECONNRESET: /* unlink */
819 case -ENOENT:
820 case -ESHUTDOWN:
821 return;
822 default:
823 /* some Pegasus-I products report LOTS of data
824 * toggle errors... avoid log spamming
825 */
826 if (netif_msg_timer(pegasus))
827 pr_debug("%s: intr status %d\n", net->name,
828 urb->status);
829 }
830
831 if (urb->actual_length >= 6) {
832 u8 * d = urb->transfer_buffer;
833
834 /* byte 0 == tx_status1, reg 2B */
835 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
836 |LATE_COL|JABBER_TIMEOUT)) {
837 pegasus->stats.tx_errors++;
838 if (d[0] & TX_UNDERRUN)
839 pegasus->stats.tx_fifo_errors++;
840 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
841 pegasus->stats.tx_aborted_errors++;
842 if (d[0] & LATE_COL)
843 pegasus->stats.tx_window_errors++;
844 }
845
846 /* d[5].LINK_STATUS lies on some adapters.
847 * d[0].NO_CARRIER kicks in only with failed TX.
848 * ... so monitoring with MII may be safest.
849 */
850
851 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
852 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
853 }
854
855 status = usb_submit_urb(urb, GFP_ATOMIC);
856 if (status == -ENODEV)
857 netif_device_detach(pegasus->net);
858 if (status && netif_msg_timer(pegasus))
859 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
860 net->name, status);
861 }
862
863 static void pegasus_tx_timeout(struct net_device *net)
864 {
865 pegasus_t *pegasus = netdev_priv(net);
866 if (netif_msg_timer(pegasus))
867 printk(KERN_WARNING "%s: tx timeout\n", net->name);
868 usb_unlink_urb(pegasus->tx_urb);
869 pegasus->stats.tx_errors++;
870 }
871
872 static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
873 {
874 pegasus_t *pegasus = netdev_priv(net);
875 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
876 int res;
877 __u16 l16 = skb->len;
878
879 netif_stop_queue(net);
880
881 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
882 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
883 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
884 usb_sndbulkpipe(pegasus->usb, 2),
885 pegasus->tx_buff, count,
886 write_bulk_callback, pegasus);
887 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
888 if (netif_msg_tx_err(pegasus))
889 printk(KERN_WARNING "%s: fail tx, %d\n",
890 net->name, res);
891 switch (res) {
892 case -EPIPE: /* stall, or disconnect from TT */
893 /* cleanup should already have been scheduled */
894 break;
895 case -ENODEV: /* disconnect() upcoming */
896 netif_device_detach(pegasus->net);
897 break;
898 default:
899 pegasus->stats.tx_errors++;
900 netif_start_queue(net);
901 }
902 } else {
903 pegasus->stats.tx_packets++;
904 pegasus->stats.tx_bytes += skb->len;
905 net->trans_start = jiffies;
906 }
907 dev_kfree_skb(skb);
908
909 return 0;
910 }
911
912 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
913 {
914 return &((pegasus_t *) netdev_priv(dev))->stats;
915 }
916
917 static inline void disable_net_traffic(pegasus_t * pegasus)
918 {
919 int tmp = 0;
920
921 set_registers(pegasus, EthCtrl0, 2, &tmp);
922 }
923
924 static inline void get_interrupt_interval(pegasus_t * pegasus)
925 {
926 __u8 data[2];
927
928 read_eprom_word(pegasus, 4, (__u16 *) data);
929 if (pegasus->usb->speed != USB_SPEED_HIGH) {
930 if (data[1] < 0x80) {
931 if (netif_msg_timer(pegasus))
932 dev_info(&pegasus->intf->dev, "intr interval "
933 "changed from %ums to %ums\n",
934 data[1], 0x80);
935 data[1] = 0x80;
936 #ifdef PEGASUS_WRITE_EEPROM
937 write_eprom_word(pegasus, 4, *(__u16 *) data);
938 #endif
939 }
940 }
941 pegasus->intr_interval = data[1];
942 }
943
944 static void set_carrier(struct net_device *net)
945 {
946 pegasus_t *pegasus = netdev_priv(net);
947 u16 tmp;
948
949 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
950 return;
951
952 if (tmp & BMSR_LSTATUS)
953 netif_carrier_on(net);
954 else
955 netif_carrier_off(net);
956 }
957
958 static void free_all_urbs(pegasus_t * pegasus)
959 {
960 usb_free_urb(pegasus->intr_urb);
961 usb_free_urb(pegasus->tx_urb);
962 usb_free_urb(pegasus->rx_urb);
963 usb_free_urb(pegasus->ctrl_urb);
964 }
965
966 static void unlink_all_urbs(pegasus_t * pegasus)
967 {
968 usb_kill_urb(pegasus->intr_urb);
969 usb_kill_urb(pegasus->tx_urb);
970 usb_kill_urb(pegasus->rx_urb);
971 usb_kill_urb(pegasus->ctrl_urb);
972 }
973
974 static int alloc_urbs(pegasus_t * pegasus)
975 {
976 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
977 if (!pegasus->ctrl_urb) {
978 return 0;
979 }
980 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
981 if (!pegasus->rx_urb) {
982 usb_free_urb(pegasus->ctrl_urb);
983 return 0;
984 }
985 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
986 if (!pegasus->tx_urb) {
987 usb_free_urb(pegasus->rx_urb);
988 usb_free_urb(pegasus->ctrl_urb);
989 return 0;
990 }
991 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
992 if (!pegasus->intr_urb) {
993 usb_free_urb(pegasus->tx_urb);
994 usb_free_urb(pegasus->rx_urb);
995 usb_free_urb(pegasus->ctrl_urb);
996 return 0;
997 }
998
999 return 1;
1000 }
1001
1002 static int pegasus_open(struct net_device *net)
1003 {
1004 pegasus_t *pegasus = netdev_priv(net);
1005 int res;
1006
1007 if (pegasus->rx_skb == NULL)
1008 pegasus->rx_skb = pull_skb(pegasus);
1009 /*
1010 ** Note: no point to free the pool. it is empty :-)
1011 */
1012 if (!pegasus->rx_skb)
1013 return -ENOMEM;
1014
1015 res = set_registers(pegasus, EthID, 6, net->dev_addr);
1016
1017 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
1018 usb_rcvbulkpipe(pegasus->usb, 1),
1019 pegasus->rx_skb->data, PEGASUS_MTU + 8,
1020 read_bulk_callback, pegasus);
1021 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
1022 if (res == -ENODEV)
1023 netif_device_detach(pegasus->net);
1024 if (netif_msg_ifup(pegasus))
1025 pr_debug("%s: failed rx_urb, %d", net->name, res);
1026 goto exit;
1027 }
1028
1029 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
1030 usb_rcvintpipe(pegasus->usb, 3),
1031 pegasus->intr_buff, sizeof (pegasus->intr_buff),
1032 intr_callback, pegasus, pegasus->intr_interval);
1033 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
1034 if (res == -ENODEV)
1035 netif_device_detach(pegasus->net);
1036 if (netif_msg_ifup(pegasus))
1037 pr_debug("%s: failed intr_urb, %d\n", net->name, res);
1038 usb_kill_urb(pegasus->rx_urb);
1039 goto exit;
1040 }
1041 if ((res = enable_net_traffic(net, pegasus->usb))) {
1042 if (netif_msg_ifup(pegasus))
1043 pr_debug("%s: can't enable_net_traffic() - %d\n",
1044 net->name, res);
1045 res = -EIO;
1046 usb_kill_urb(pegasus->rx_urb);
1047 usb_kill_urb(pegasus->intr_urb);
1048 free_skb_pool(pegasus);
1049 goto exit;
1050 }
1051 set_carrier(net);
1052 netif_start_queue(net);
1053 if (netif_msg_ifup(pegasus))
1054 pr_debug("%s: open\n", net->name);
1055 res = 0;
1056 exit:
1057 return res;
1058 }
1059
1060 static int pegasus_close(struct net_device *net)
1061 {
1062 pegasus_t *pegasus = netdev_priv(net);
1063
1064 netif_stop_queue(net);
1065 if (!(pegasus->flags & PEGASUS_UNPLUG))
1066 disable_net_traffic(pegasus);
1067 tasklet_kill(&pegasus->rx_tl);
1068 unlink_all_urbs(pegasus);
1069
1070 return 0;
1071 }
1072
1073 static void pegasus_get_drvinfo(struct net_device *dev,
1074 struct ethtool_drvinfo *info)
1075 {
1076 pegasus_t *pegasus = netdev_priv(dev);
1077 strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1078 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1079 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1080 }
1081
1082 /* also handles three patterns of some kind in hardware */
1083 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
1084
1085 static void
1086 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1087 {
1088 pegasus_t *pegasus = netdev_priv(dev);
1089
1090 wol->supported = WAKE_MAGIC | WAKE_PHY;
1091 wol->wolopts = pegasus->wolopts;
1092 }
1093
1094 static int
1095 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1096 {
1097 pegasus_t *pegasus = netdev_priv(dev);
1098 u8 reg78 = 0x04;
1099
1100 if (wol->wolopts & ~WOL_SUPPORTED)
1101 return -EINVAL;
1102
1103 if (wol->wolopts & WAKE_MAGIC)
1104 reg78 |= 0x80;
1105 if (wol->wolopts & WAKE_PHY)
1106 reg78 |= 0x40;
1107 /* FIXME this 0x10 bit still needs to get set in the chip... */
1108 if (wol->wolopts)
1109 pegasus->eth_regs[0] |= 0x10;
1110 else
1111 pegasus->eth_regs[0] &= ~0x10;
1112 pegasus->wolopts = wol->wolopts;
1113 return set_register(pegasus, WakeupControl, reg78);
1114 }
1115
1116 static inline void pegasus_reset_wol(struct net_device *dev)
1117 {
1118 struct ethtool_wolinfo wol;
1119
1120 memset(&wol, 0, sizeof wol);
1121 (void) pegasus_set_wol(dev, &wol);
1122 }
1123
1124 static int
1125 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1126 {
1127 pegasus_t *pegasus;
1128
1129 if (in_atomic())
1130 return 0;
1131
1132 pegasus = netdev_priv(dev);
1133 mii_ethtool_gset(&pegasus->mii, ecmd);
1134
1135 return 0;
1136 }
1137
1138 static int
1139 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1140 {
1141 pegasus_t *pegasus = netdev_priv(dev);
1142 return mii_ethtool_sset(&pegasus->mii, ecmd);
1143 }
1144
1145 static int pegasus_nway_reset(struct net_device *dev)
1146 {
1147 pegasus_t *pegasus = netdev_priv(dev);
1148 return mii_nway_restart(&pegasus->mii);
1149 }
1150
1151 static u32 pegasus_get_link(struct net_device *dev)
1152 {
1153 pegasus_t *pegasus = netdev_priv(dev);
1154 return mii_link_ok(&pegasus->mii);
1155 }
1156
1157 static u32 pegasus_get_msglevel(struct net_device *dev)
1158 {
1159 pegasus_t *pegasus = netdev_priv(dev);
1160 return pegasus->msg_enable;
1161 }
1162
1163 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1164 {
1165 pegasus_t *pegasus = netdev_priv(dev);
1166 pegasus->msg_enable = v;
1167 }
1168
1169 static struct ethtool_ops ops = {
1170 .get_drvinfo = pegasus_get_drvinfo,
1171 .get_settings = pegasus_get_settings,
1172 .set_settings = pegasus_set_settings,
1173 .nway_reset = pegasus_nway_reset,
1174 .get_link = pegasus_get_link,
1175 .get_msglevel = pegasus_get_msglevel,
1176 .set_msglevel = pegasus_set_msglevel,
1177 .get_wol = pegasus_get_wol,
1178 .set_wol = pegasus_set_wol,
1179 };
1180
1181 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1182 {
1183 __u16 *data = (__u16 *) & rq->ifr_ifru;
1184 pegasus_t *pegasus = netdev_priv(net);
1185 int res;
1186
1187 switch (cmd) {
1188 case SIOCDEVPRIVATE:
1189 data[0] = pegasus->phy;
1190 case SIOCDEVPRIVATE + 1:
1191 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1192 res = 0;
1193 break;
1194 case SIOCDEVPRIVATE + 2:
1195 if (!capable(CAP_NET_ADMIN))
1196 return -EPERM;
1197 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1198 res = 0;
1199 break;
1200 default:
1201 res = -EOPNOTSUPP;
1202 }
1203 return res;
1204 }
1205
1206 static void pegasus_set_multicast(struct net_device *net)
1207 {
1208 pegasus_t *pegasus = netdev_priv(net);
1209
1210 if (net->flags & IFF_PROMISC) {
1211 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1212 if (netif_msg_link(pegasus))
1213 pr_info("%s: Promiscuous mode enabled.\n", net->name);
1214 } else if (net->mc_count ||
1215 (net->flags & IFF_ALLMULTI)) {
1216 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1217 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1218 if (netif_msg_link(pegasus))
1219 pr_info("%s: set allmulti\n", net->name);
1220 } else {
1221 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1222 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1223 }
1224
1225 pegasus->flags |= ETH_REGS_CHANGE;
1226 ctrl_callback(pegasus->ctrl_urb);
1227 }
1228
1229 static __u8 mii_phy_probe(pegasus_t * pegasus)
1230 {
1231 int i;
1232 __u16 tmp;
1233
1234 for (i = 0; i < 32; i++) {
1235 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1236 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1237 continue;
1238 else
1239 return i;
1240 }
1241
1242 return 0xff;
1243 }
1244
1245 static inline void setup_pegasus_II(pegasus_t * pegasus)
1246 {
1247 __u8 data = 0xa5;
1248
1249 set_register(pegasus, Reg1d, 0);
1250 set_register(pegasus, Reg7b, 1);
1251 mdelay(100);
1252 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1253 set_register(pegasus, Reg7b, 0);
1254 else
1255 set_register(pegasus, Reg7b, 2);
1256
1257 set_register(pegasus, 0x83, data);
1258 get_registers(pegasus, 0x83, 1, &data);
1259
1260 if (data == 0xa5) {
1261 pegasus->chip = 0x8513;
1262 } else {
1263 pegasus->chip = 0;
1264 }
1265
1266 set_register(pegasus, 0x80, 0xc0);
1267 set_register(pegasus, 0x83, 0xff);
1268 set_register(pegasus, 0x84, 0x01);
1269
1270 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1271 set_register(pegasus, Reg81, 6);
1272 else
1273 set_register(pegasus, Reg81, 2);
1274 }
1275
1276
1277 static struct workqueue_struct *pegasus_workqueue = NULL;
1278 #define CARRIER_CHECK_DELAY (2 * HZ)
1279
1280 static void check_carrier(struct work_struct *work)
1281 {
1282 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1283 set_carrier(pegasus->net);
1284 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1285 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1286 CARRIER_CHECK_DELAY);
1287 }
1288 }
1289
1290 static int pegasus_probe(struct usb_interface *intf,
1291 const struct usb_device_id *id)
1292 {
1293 struct usb_device *dev = interface_to_usbdev(intf);
1294 struct net_device *net;
1295 pegasus_t *pegasus;
1296 int dev_index = id - pegasus_ids;
1297 int res = -ENOMEM;
1298
1299 usb_get_dev(dev);
1300 net = alloc_etherdev(sizeof(struct pegasus));
1301 if (!net) {
1302 dev_err(&intf->dev, "can't allocate %s\n", "device");
1303 goto out;
1304 }
1305
1306 pegasus = netdev_priv(net);
1307 memset(pegasus, 0, sizeof (struct pegasus));
1308 pegasus->dev_index = dev_index;
1309 init_waitqueue_head(&pegasus->ctrl_wait);
1310
1311 if (!alloc_urbs(pegasus)) {
1312 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1313 goto out1;
1314 }
1315
1316 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1317
1318 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1319
1320 pegasus->intf = intf;
1321 pegasus->usb = dev;
1322 pegasus->net = net;
1323 SET_MODULE_OWNER(net);
1324 net->open = pegasus_open;
1325 net->stop = pegasus_close;
1326 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1327 net->tx_timeout = pegasus_tx_timeout;
1328 net->do_ioctl = pegasus_ioctl;
1329 net->hard_start_xmit = pegasus_start_xmit;
1330 net->set_multicast_list = pegasus_set_multicast;
1331 net->get_stats = pegasus_netdev_stats;
1332 SET_ETHTOOL_OPS(net, &ops);
1333 pegasus->mii.dev = net;
1334 pegasus->mii.mdio_read = mdio_read;
1335 pegasus->mii.mdio_write = mdio_write;
1336 pegasus->mii.phy_id_mask = 0x1f;
1337 pegasus->mii.reg_num_mask = 0x1f;
1338 spin_lock_init(&pegasus->rx_pool_lock);
1339 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1340 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1341
1342 pegasus->features = usb_dev_id[dev_index].private;
1343 get_interrupt_interval(pegasus);
1344 if (reset_mac(pegasus)) {
1345 dev_err(&intf->dev, "can't reset MAC\n");
1346 res = -EIO;
1347 goto out2;
1348 }
1349 set_ethernet_addr(pegasus);
1350 fill_skb_pool(pegasus);
1351 if (pegasus->features & PEGASUS_II) {
1352 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1353 setup_pegasus_II(pegasus);
1354 }
1355 pegasus->phy = mii_phy_probe(pegasus);
1356 if (pegasus->phy == 0xff) {
1357 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1358 pegasus->phy = 1;
1359 }
1360 pegasus->mii.phy_id = pegasus->phy;
1361 usb_set_intfdata(intf, pegasus);
1362 SET_NETDEV_DEV(net, &intf->dev);
1363 pegasus_reset_wol(net);
1364 res = register_netdev(net);
1365 if (res)
1366 goto out3;
1367 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1368 CARRIER_CHECK_DELAY);
1369
1370 dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n",
1371 net->name,
1372 usb_dev_id[dev_index].name,
1373 net->dev_addr [0], net->dev_addr [1],
1374 net->dev_addr [2], net->dev_addr [3],
1375 net->dev_addr [4], net->dev_addr [5]);
1376 return 0;
1377
1378 out3:
1379 usb_set_intfdata(intf, NULL);
1380 free_skb_pool(pegasus);
1381 out2:
1382 free_all_urbs(pegasus);
1383 out1:
1384 free_netdev(net);
1385 out:
1386 usb_put_dev(dev);
1387 return res;
1388 }
1389
1390 static void pegasus_disconnect(struct usb_interface *intf)
1391 {
1392 struct pegasus *pegasus = usb_get_intfdata(intf);
1393
1394 usb_set_intfdata(intf, NULL);
1395 if (!pegasus) {
1396 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1397 return;
1398 }
1399
1400 pegasus->flags |= PEGASUS_UNPLUG;
1401 cancel_delayed_work(&pegasus->carrier_check);
1402 unregister_netdev(pegasus->net);
1403 usb_put_dev(interface_to_usbdev(intf));
1404 unlink_all_urbs(pegasus);
1405 free_all_urbs(pegasus);
1406 free_skb_pool(pegasus);
1407 if (pegasus->rx_skb != NULL) {
1408 dev_kfree_skb(pegasus->rx_skb);
1409 pegasus->rx_skb = NULL;
1410 }
1411 free_netdev(pegasus->net);
1412 }
1413
1414 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1415 {
1416 struct pegasus *pegasus = usb_get_intfdata(intf);
1417
1418 netif_device_detach (pegasus->net);
1419 cancel_delayed_work(&pegasus->carrier_check);
1420 if (netif_running(pegasus->net)) {
1421 usb_kill_urb(pegasus->rx_urb);
1422 usb_kill_urb(pegasus->intr_urb);
1423 }
1424 return 0;
1425 }
1426
1427 static int pegasus_resume (struct usb_interface *intf)
1428 {
1429 struct pegasus *pegasus = usb_get_intfdata(intf);
1430
1431 netif_device_attach (pegasus->net);
1432 if (netif_running(pegasus->net)) {
1433 pegasus->rx_urb->status = 0;
1434 pegasus->rx_urb->actual_length = 0;
1435 read_bulk_callback(pegasus->rx_urb);
1436
1437 pegasus->intr_urb->status = 0;
1438 pegasus->intr_urb->actual_length = 0;
1439 intr_callback(pegasus->intr_urb);
1440 }
1441 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1442 CARRIER_CHECK_DELAY);
1443 return 0;
1444 }
1445
1446 static struct usb_driver pegasus_driver = {
1447 .name = driver_name,
1448 .probe = pegasus_probe,
1449 .disconnect = pegasus_disconnect,
1450 .id_table = pegasus_ids,
1451 .suspend = pegasus_suspend,
1452 .resume = pegasus_resume,
1453 };
1454
1455 static void parse_id(char *id)
1456 {
1457 unsigned int vendor_id=0, device_id=0, flags=0, i=0;
1458 char *token, *name=NULL;
1459
1460 if ((token = strsep(&id, ":")) != NULL)
1461 name = token;
1462 /* name now points to a null terminated string*/
1463 if ((token = strsep(&id, ":")) != NULL)
1464 vendor_id = simple_strtoul(token, NULL, 16);
1465 if ((token = strsep(&id, ":")) != NULL)
1466 device_id = simple_strtoul(token, NULL, 16);
1467 flags = simple_strtoul(id, NULL, 16);
1468 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1469 driver_name, name, vendor_id, device_id, flags);
1470
1471 if (vendor_id > 0x10000 || vendor_id == 0)
1472 return;
1473 if (device_id > 0x10000 || device_id == 0)
1474 return;
1475
1476 for (i=0; usb_dev_id[i].name; i++);
1477 usb_dev_id[i].name = name;
1478 usb_dev_id[i].vendor = vendor_id;
1479 usb_dev_id[i].device = device_id;
1480 usb_dev_id[i].private = flags;
1481 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1482 pegasus_ids[i].idVendor = vendor_id;
1483 pegasus_ids[i].idProduct = device_id;
1484 }
1485
1486 static int __init pegasus_init(void)
1487 {
1488 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1489 if (devid)
1490 parse_id(devid);
1491 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1492 if (!pegasus_workqueue)
1493 return -ENOMEM;
1494 return usb_register(&pegasus_driver);
1495 }
1496
1497 static void __exit pegasus_exit(void)
1498 {
1499 destroy_workqueue(pegasus_workqueue);
1500 usb_deregister(&pegasus_driver);
1501 }
1502
1503 module_init(pegasus_init);
1504 module_exit(pegasus_exit);
linux v2.6.22.y-op