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lockd: handle test_lock deferrals
[pv_ops_mirror.git] / drivers / usb / net / pegasus.c
blobd48c024cff595ff2987be71fb33ab536c05ad5f9
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 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
320 {
321 int i;
322 __u8 data[4] = { phy, 0, 0, indx };
323 __le16 regdi;
324 int ret;
325
326 set_register(pegasus, PhyCtrl, 0);
327 set_registers(pegasus, PhyAddr, sizeof (data), data);
328 set_register(pegasus, PhyCtrl, (indx | PHY_READ));
329 for (i = 0; i < REG_TIMEOUT; i++) {
330 ret = get_registers(pegasus, PhyCtrl, 1, data);
331 if (ret == -ESHUTDOWN)
332 goto fail;
333 if (data[0] & PHY_DONE)
334 break;
335 }
336 if (i < REG_TIMEOUT) {
337 ret = get_registers(pegasus, PhyData, 2, &regdi);
338 *regd = le16_to_cpu(regdi);
339 return ret;
340 }
341 fail:
342 if (netif_msg_drv(pegasus))
343 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
344
345 return ret;
346 }
347
348 static int mdio_read(struct net_device *dev, int phy_id, int loc)
349 {
350 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
351 u16 res;
352
353 read_mii_word(pegasus, phy_id, loc, &res);
354 return (int)res;
355 }
356
357 static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
358 {
359 int i;
360 __u8 data[4] = { phy, 0, 0, indx };
361 int ret;
362
363 data[1] = (u8) regd;
364 data[2] = (u8) (regd >> 8);
365 set_register(pegasus, PhyCtrl, 0);
366 set_registers(pegasus, PhyAddr, sizeof(data), data);
367 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
368 for (i = 0; i < REG_TIMEOUT; i++) {
369 ret = get_registers(pegasus, PhyCtrl, 1, data);
370 if (ret == -ESHUTDOWN)
371 goto fail;
372 if (data[0] & PHY_DONE)
373 break;
374 }
375 if (i < REG_TIMEOUT)
376 return ret;
377
378 fail:
379 if (netif_msg_drv(pegasus))
380 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
381 return -ETIMEDOUT;
382 }
383
384 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
385 {
386 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
387
388 write_mii_word(pegasus, phy_id, loc, val);
389 }
390
391 static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
392 {
393 int i;
394 __u8 tmp;
395 __le16 retdatai;
396 int ret;
397
398 set_register(pegasus, EpromCtrl, 0);
399 set_register(pegasus, EpromOffset, index);
400 set_register(pegasus, EpromCtrl, EPROM_READ);
401
402 for (i = 0; i < REG_TIMEOUT; i++) {
403 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
404 if (tmp & EPROM_DONE)
405 break;
406 if (ret == -ESHUTDOWN)
407 goto fail;
408 }
409 if (i < REG_TIMEOUT) {
410 ret = get_registers(pegasus, EpromData, 2, &retdatai);
411 *retdata = le16_to_cpu(retdatai);
412 return ret;
413 }
414
415 fail:
416 if (netif_msg_drv(pegasus))
417 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
418 return -ETIMEDOUT;
419 }
420
421 #ifdef PEGASUS_WRITE_EEPROM
422 static inline void enable_eprom_write(pegasus_t * pegasus)
423 {
424 __u8 tmp;
425 int ret;
426
427 get_registers(pegasus, EthCtrl2, 1, &tmp);
428 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
429 }
430
431 static inline void disable_eprom_write(pegasus_t * pegasus)
432 {
433 __u8 tmp;
434 int ret;
435
436 get_registers(pegasus, EthCtrl2, 1, &tmp);
437 set_register(pegasus, EpromCtrl, 0);
438 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
439 }
440
441 static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
442 {
443 int i;
444 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
445 int ret;
446
447 set_registers(pegasus, EpromOffset, 4, d);
448 enable_eprom_write(pegasus);
449 set_register(pegasus, EpromOffset, index);
450 set_registers(pegasus, EpromData, 2, &data);
451 set_register(pegasus, EpromCtrl, EPROM_WRITE);
452
453 for (i = 0; i < REG_TIMEOUT; i++) {
454 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
455 if (ret == -ESHUTDOWN)
456 goto fail;
457 if (tmp & EPROM_DONE)
458 break;
459 }
460 disable_eprom_write(pegasus);
461 if (i < REG_TIMEOUT)
462 return ret;
463 fail:
464 if (netif_msg_drv(pegasus))
465 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
466 return -ETIMEDOUT;
467 }
468 #endif /* PEGASUS_WRITE_EEPROM */
469
470 static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
471 {
472 int i;
473 __u16 w16;
474
475 for (i = 0; i < 3; i++) {
476 read_eprom_word(pegasus, i, &w16);
477 ((__le16 *) id)[i] = cpu_to_le16p(&w16);
478 }
479 }
480
481 static void set_ethernet_addr(pegasus_t * pegasus)
482 {
483 __u8 node_id[6];
484
485 if (pegasus->features & PEGASUS_II) {
486 get_registers(pegasus, 0x10, sizeof(node_id), node_id);
487 } else {
488 get_node_id(pegasus, node_id);
489 set_registers(pegasus, EthID, sizeof (node_id), node_id);
490 }
491 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
492 }
493
494 static inline int reset_mac(pegasus_t * pegasus)
495 {
496 __u8 data = 0x8;
497 int i;
498
499 set_register(pegasus, EthCtrl1, data);
500 for (i = 0; i < REG_TIMEOUT; i++) {
501 get_registers(pegasus, EthCtrl1, 1, &data);
502 if (~data & 0x08) {
503 if (loopback & 1)
504 break;
505 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
506 set_register(pegasus, Gpio1, 0x34);
507 else
508 set_register(pegasus, Gpio1, 0x26);
509 set_register(pegasus, Gpio0, pegasus->features);
510 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
511 break;
512 }
513 }
514 if (i == REG_TIMEOUT)
515 return -ETIMEDOUT;
516
517 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
518 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
519 set_register(pegasus, Gpio0, 0x24);
520 set_register(pegasus, Gpio0, 0x26);
521 }
522 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
523 __u16 auxmode;
524 read_mii_word(pegasus, 3, 0x1b, &auxmode);
525 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
526 }
527
528 return 0;
529 }
530
531 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
532 {
533 __u16 linkpart;
534 __u8 data[4];
535 pegasus_t *pegasus = netdev_priv(dev);
536 int ret;
537
538 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
539 data[0] = 0xc9;
540 data[1] = 0;
541 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
542 data[1] |= 0x20; /* set full duplex */
543 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
544 data[1] |= 0x10; /* set 100 Mbps */
545 if (mii_mode)
546 data[1] = 0;
547 data[2] = (loopback & 1) ? 0x09 : 0x01;
548
549 memcpy(pegasus->eth_regs, data, sizeof (data));
550 ret = set_registers(pegasus, EthCtrl0, 3, data);
551
552 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
553 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
554 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
555 u16 auxmode;
556 read_mii_word(pegasus, 0, 0x1b, &auxmode);
557 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
558 }
559
560 return ret;
561 }
562
563 static void fill_skb_pool(pegasus_t * pegasus)
564 {
565 int i;
566
567 for (i = 0; i < RX_SKBS; i++) {
568 if (pegasus->rx_pool[i])
569 continue;
570 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
571 /*
572 ** we give up if the allocation fail. the tasklet will be
573 ** rescheduled again anyway...
574 */
575 if (pegasus->rx_pool[i] == NULL)
576 return;
577 pegasus->rx_pool[i]->dev = pegasus->net;
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 if (d[0] & NO_CARRIER)
851 netif_carrier_off(net);
852 else
853 netif_carrier_on(net);
854
855 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
856 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
857 }
858
859 status = usb_submit_urb(urb, GFP_ATOMIC);
860 if (status == -ENODEV)
861 netif_device_detach(pegasus->net);
862 if (status && netif_msg_timer(pegasus))
863 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
864 net->name, status);
865 }
866
867 static void pegasus_tx_timeout(struct net_device *net)
868 {
869 pegasus_t *pegasus = netdev_priv(net);
870 if (netif_msg_timer(pegasus))
871 printk(KERN_WARNING "%s: tx timeout\n", net->name);
872 usb_unlink_urb(pegasus->tx_urb);
873 pegasus->stats.tx_errors++;
874 }
875
876 static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
877 {
878 pegasus_t *pegasus = netdev_priv(net);
879 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
880 int res;
881 __u16 l16 = skb->len;
882
883 netif_stop_queue(net);
884
885 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
886 memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
887 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
888 usb_sndbulkpipe(pegasus->usb, 2),
889 pegasus->tx_buff, count,
890 write_bulk_callback, pegasus);
891 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
892 if (netif_msg_tx_err(pegasus))
893 printk(KERN_WARNING "%s: fail tx, %d\n",
894 net->name, res);
895 switch (res) {
896 case -EPIPE: /* stall, or disconnect from TT */
897 /* cleanup should already have been scheduled */
898 break;
899 case -ENODEV: /* disconnect() upcoming */
900 netif_device_detach(pegasus->net);
901 break;
902 default:
903 pegasus->stats.tx_errors++;
904 netif_start_queue(net);
905 }
906 } else {
907 pegasus->stats.tx_packets++;
908 pegasus->stats.tx_bytes += skb->len;
909 net->trans_start = jiffies;
910 }
911 dev_kfree_skb(skb);
912
913 return 0;
914 }
915
916 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
917 {
918 return &((pegasus_t *) netdev_priv(dev))->stats;
919 }
920
921 static inline void disable_net_traffic(pegasus_t * pegasus)
922 {
923 int tmp = 0;
924
925 set_registers(pegasus, EthCtrl0, 2, &tmp);
926 }
927
928 static inline void get_interrupt_interval(pegasus_t * pegasus)
929 {
930 __u8 data[2];
931
932 read_eprom_word(pegasus, 4, (__u16 *) data);
933 if (pegasus->usb->speed != USB_SPEED_HIGH) {
934 if (data[1] < 0x80) {
935 if (netif_msg_timer(pegasus))
936 dev_info(&pegasus->intf->dev, "intr interval "
937 "changed from %ums to %ums\n",
938 data[1], 0x80);
939 data[1] = 0x80;
940 #ifdef PEGASUS_WRITE_EEPROM
941 write_eprom_word(pegasus, 4, *(__u16 *) data);
942 #endif
943 }
944 }
945 pegasus->intr_interval = data[1];
946 }
947
948 static void set_carrier(struct net_device *net)
949 {
950 pegasus_t *pegasus = netdev_priv(net);
951 u16 tmp;
952
953 if (!read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
954 return;
955
956 if (tmp & BMSR_LSTATUS)
957 netif_carrier_on(net);
958 else
959 netif_carrier_off(net);
960 }
961
962 static void free_all_urbs(pegasus_t * pegasus)
963 {
964 usb_free_urb(pegasus->intr_urb);
965 usb_free_urb(pegasus->tx_urb);
966 usb_free_urb(pegasus->rx_urb);
967 usb_free_urb(pegasus->ctrl_urb);
968 }
969
970 static void unlink_all_urbs(pegasus_t * pegasus)
971 {
972 usb_kill_urb(pegasus->intr_urb);
973 usb_kill_urb(pegasus->tx_urb);
974 usb_kill_urb(pegasus->rx_urb);
975 usb_kill_urb(pegasus->ctrl_urb);
976 }
977
978 static int alloc_urbs(pegasus_t * pegasus)
979 {
980 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
981 if (!pegasus->ctrl_urb) {
982 return 0;
983 }
984 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
985 if (!pegasus->rx_urb) {
986 usb_free_urb(pegasus->ctrl_urb);
987 return 0;
988 }
989 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
990 if (!pegasus->tx_urb) {
991 usb_free_urb(pegasus->rx_urb);
992 usb_free_urb(pegasus->ctrl_urb);
993 return 0;
994 }
995 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
996 if (!pegasus->intr_urb) {
997 usb_free_urb(pegasus->tx_urb);
998 usb_free_urb(pegasus->rx_urb);
999 usb_free_urb(pegasus->ctrl_urb);
1000 return 0;
1001 }
1002
1003 return 1;
1004 }
1005
1006 static int pegasus_open(struct net_device *net)
1007 {
1008 pegasus_t *pegasus = netdev_priv(net);
1009 int res;
1010
1011 if (pegasus->rx_skb == NULL)
1012 pegasus->rx_skb = pull_skb(pegasus);
1013 /*
1014 ** Note: no point to free the pool. it is empty :-)
1015 */
1016 if (!pegasus->rx_skb)
1017 return -ENOMEM;
1018
1019 res = set_registers(pegasus, EthID, 6, net->dev_addr);
1020
1021 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
1022 usb_rcvbulkpipe(pegasus->usb, 1),
1023 pegasus->rx_skb->data, PEGASUS_MTU + 8,
1024 read_bulk_callback, pegasus);
1025 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
1026 if (res == -ENODEV)
1027 netif_device_detach(pegasus->net);
1028 if (netif_msg_ifup(pegasus))
1029 pr_debug("%s: failed rx_urb, %d", net->name, res);
1030 goto exit;
1031 }
1032
1033 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
1034 usb_rcvintpipe(pegasus->usb, 3),
1035 pegasus->intr_buff, sizeof (pegasus->intr_buff),
1036 intr_callback, pegasus, pegasus->intr_interval);
1037 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
1038 if (res == -ENODEV)
1039 netif_device_detach(pegasus->net);
1040 if (netif_msg_ifup(pegasus))
1041 pr_debug("%s: failed intr_urb, %d\n", net->name, res);
1042 usb_kill_urb(pegasus->rx_urb);
1043 goto exit;
1044 }
1045 if ((res = enable_net_traffic(net, pegasus->usb))) {
1046 if (netif_msg_ifup(pegasus))
1047 pr_debug("%s: can't enable_net_traffic() - %d\n",
1048 net->name, res);
1049 res = -EIO;
1050 usb_kill_urb(pegasus->rx_urb);
1051 usb_kill_urb(pegasus->intr_urb);
1052 free_skb_pool(pegasus);
1053 goto exit;
1054 }
1055 set_carrier(net);
1056 netif_start_queue(net);
1057 if (netif_msg_ifup(pegasus))
1058 pr_debug("%s: open\n", net->name);
1059 res = 0;
1060 exit:
1061 return res;
1062 }
1063
1064 static int pegasus_close(struct net_device *net)
1065 {
1066 pegasus_t *pegasus = netdev_priv(net);
1067
1068 netif_stop_queue(net);
1069 if (!(pegasus->flags & PEGASUS_UNPLUG))
1070 disable_net_traffic(pegasus);
1071 tasklet_kill(&pegasus->rx_tl);
1072 unlink_all_urbs(pegasus);
1073
1074 return 0;
1075 }
1076
1077 static void pegasus_get_drvinfo(struct net_device *dev,
1078 struct ethtool_drvinfo *info)
1079 {
1080 pegasus_t *pegasus = netdev_priv(dev);
1081 strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1082 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1083 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1084 }
1085
1086 /* also handles three patterns of some kind in hardware */
1087 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
1088
1089 static void
1090 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1091 {
1092 pegasus_t *pegasus = netdev_priv(dev);
1093
1094 wol->supported = WAKE_MAGIC | WAKE_PHY;
1095 wol->wolopts = pegasus->wolopts;
1096 }
1097
1098 static int
1099 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1100 {
1101 pegasus_t *pegasus = netdev_priv(dev);
1102 u8 reg78 = 0x04;
1103
1104 if (wol->wolopts & ~WOL_SUPPORTED)
1105 return -EINVAL;
1106
1107 if (wol->wolopts & WAKE_MAGIC)
1108 reg78 |= 0x80;
1109 if (wol->wolopts & WAKE_PHY)
1110 reg78 |= 0x40;
1111 /* FIXME this 0x10 bit still needs to get set in the chip... */
1112 if (wol->wolopts)
1113 pegasus->eth_regs[0] |= 0x10;
1114 else
1115 pegasus->eth_regs[0] &= ~0x10;
1116 pegasus->wolopts = wol->wolopts;
1117 return set_register(pegasus, WakeupControl, reg78);
1118 }
1119
1120 static inline void pegasus_reset_wol(struct net_device *dev)
1121 {
1122 struct ethtool_wolinfo wol;
1123
1124 memset(&wol, 0, sizeof wol);
1125 (void) pegasus_set_wol(dev, &wol);
1126 }
1127
1128 static int
1129 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1130 {
1131 pegasus_t *pegasus;
1132
1133 if (in_atomic())
1134 return 0;
1135
1136 pegasus = netdev_priv(dev);
1137 mii_ethtool_gset(&pegasus->mii, ecmd);
1138
1139 return 0;
1140 }
1141
1142 static int
1143 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1144 {
1145 pegasus_t *pegasus = netdev_priv(dev);
1146 return mii_ethtool_sset(&pegasus->mii, ecmd);
1147 }
1148
1149 static int pegasus_nway_reset(struct net_device *dev)
1150 {
1151 pegasus_t *pegasus = netdev_priv(dev);
1152 return mii_nway_restart(&pegasus->mii);
1153 }
1154
1155 static u32 pegasus_get_link(struct net_device *dev)
1156 {
1157 pegasus_t *pegasus = netdev_priv(dev);
1158 return mii_link_ok(&pegasus->mii);
1159 }
1160
1161 static u32 pegasus_get_msglevel(struct net_device *dev)
1162 {
1163 pegasus_t *pegasus = netdev_priv(dev);
1164 return pegasus->msg_enable;
1165 }
1166
1167 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1168 {
1169 pegasus_t *pegasus = netdev_priv(dev);
1170 pegasus->msg_enable = v;
1171 }
1172
1173 static struct ethtool_ops ops = {
1174 .get_drvinfo = pegasus_get_drvinfo,
1175 .get_settings = pegasus_get_settings,
1176 .set_settings = pegasus_set_settings,
1177 .nway_reset = pegasus_nway_reset,
1178 .get_link = pegasus_get_link,
1179 .get_msglevel = pegasus_get_msglevel,
1180 .set_msglevel = pegasus_set_msglevel,
1181 .get_wol = pegasus_get_wol,
1182 .set_wol = pegasus_set_wol,
1183 };
1184
1185 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1186 {
1187 __u16 *data = (__u16 *) & rq->ifr_ifru;
1188 pegasus_t *pegasus = netdev_priv(net);
1189 int res;
1190
1191 switch (cmd) {
1192 case SIOCDEVPRIVATE:
1193 data[0] = pegasus->phy;
1194 case SIOCDEVPRIVATE + 1:
1195 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1196 res = 0;
1197 break;
1198 case SIOCDEVPRIVATE + 2:
1199 if (!capable(CAP_NET_ADMIN))
1200 return -EPERM;
1201 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1202 res = 0;
1203 break;
1204 default:
1205 res = -EOPNOTSUPP;
1206 }
1207 return res;
1208 }
1209
1210 static void pegasus_set_multicast(struct net_device *net)
1211 {
1212 pegasus_t *pegasus = netdev_priv(net);
1213
1214 if (net->flags & IFF_PROMISC) {
1215 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1216 if (netif_msg_link(pegasus))
1217 pr_info("%s: Promiscuous mode enabled.\n", net->name);
1218 } else if (net->mc_count ||
1219 (net->flags & IFF_ALLMULTI)) {
1220 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1221 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1222 if (netif_msg_link(pegasus))
1223 pr_info("%s: set allmulti\n", net->name);
1224 } else {
1225 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1226 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1227 }
1228
1229 pegasus->flags |= ETH_REGS_CHANGE;
1230 ctrl_callback(pegasus->ctrl_urb);
1231 }
1232
1233 static __u8 mii_phy_probe(pegasus_t * pegasus)
1234 {
1235 int i;
1236 __u16 tmp;
1237
1238 for (i = 0; i < 32; i++) {
1239 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1240 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1241 continue;
1242 else
1243 return i;
1244 }
1245
1246 return 0xff;
1247 }
1248
1249 static inline void setup_pegasus_II(pegasus_t * pegasus)
1250 {
1251 __u8 data = 0xa5;
1252
1253 set_register(pegasus, Reg1d, 0);
1254 set_register(pegasus, Reg7b, 1);
1255 mdelay(100);
1256 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1257 set_register(pegasus, Reg7b, 0);
1258 else
1259 set_register(pegasus, Reg7b, 2);
1260
1261 set_register(pegasus, 0x83, data);
1262 get_registers(pegasus, 0x83, 1, &data);
1263
1264 if (data == 0xa5) {
1265 pegasus->chip = 0x8513;
1266 } else {
1267 pegasus->chip = 0;
1268 }
1269
1270 set_register(pegasus, 0x80, 0xc0);
1271 set_register(pegasus, 0x83, 0xff);
1272 set_register(pegasus, 0x84, 0x01);
1273
1274 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1275 set_register(pegasus, Reg81, 6);
1276 else
1277 set_register(pegasus, Reg81, 2);
1278 }
1279
1280
1281 static struct workqueue_struct *pegasus_workqueue = NULL;
1282 #define CARRIER_CHECK_DELAY (2 * HZ)
1283
1284 static void check_carrier(struct work_struct *work)
1285 {
1286 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1287 set_carrier(pegasus->net);
1288 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1289 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1290 CARRIER_CHECK_DELAY);
1291 }
1292 }
1293
1294 static int pegasus_probe(struct usb_interface *intf,
1295 const struct usb_device_id *id)
1296 {
1297 struct usb_device *dev = interface_to_usbdev(intf);
1298 struct net_device *net;
1299 pegasus_t *pegasus;
1300 int dev_index = id - pegasus_ids;
1301 int res = -ENOMEM;
1302
1303 usb_get_dev(dev);
1304 net = alloc_etherdev(sizeof(struct pegasus));
1305 if (!net) {
1306 dev_err(&intf->dev, "can't allocate %s\n", "device");
1307 goto out;
1308 }
1309
1310 pegasus = netdev_priv(net);
1311 memset(pegasus, 0, sizeof (struct pegasus));
1312 pegasus->dev_index = dev_index;
1313 init_waitqueue_head(&pegasus->ctrl_wait);
1314
1315 if (!alloc_urbs(pegasus)) {
1316 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1317 goto out1;
1318 }
1319
1320 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1321
1322 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1323
1324 pegasus->intf = intf;
1325 pegasus->usb = dev;
1326 pegasus->net = net;
1327 SET_MODULE_OWNER(net);
1328 net->open = pegasus_open;
1329 net->stop = pegasus_close;
1330 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1331 net->tx_timeout = pegasus_tx_timeout;
1332 net->do_ioctl = pegasus_ioctl;
1333 net->hard_start_xmit = pegasus_start_xmit;
1334 net->set_multicast_list = pegasus_set_multicast;
1335 net->get_stats = pegasus_netdev_stats;
1336 SET_ETHTOOL_OPS(net, &ops);
1337 pegasus->mii.dev = net;
1338 pegasus->mii.mdio_read = mdio_read;
1339 pegasus->mii.mdio_write = mdio_write;
1340 pegasus->mii.phy_id_mask = 0x1f;
1341 pegasus->mii.reg_num_mask = 0x1f;
1342 spin_lock_init(&pegasus->rx_pool_lock);
1343 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1344 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1345
1346 pegasus->features = usb_dev_id[dev_index].private;
1347 get_interrupt_interval(pegasus);
1348 if (reset_mac(pegasus)) {
1349 dev_err(&intf->dev, "can't reset MAC\n");
1350 res = -EIO;
1351 goto out2;
1352 }
1353 set_ethernet_addr(pegasus);
1354 fill_skb_pool(pegasus);
1355 if (pegasus->features & PEGASUS_II) {
1356 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1357 setup_pegasus_II(pegasus);
1358 }
1359 pegasus->phy = mii_phy_probe(pegasus);
1360 if (pegasus->phy == 0xff) {
1361 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1362 pegasus->phy = 1;
1363 }
1364 pegasus->mii.phy_id = pegasus->phy;
1365 usb_set_intfdata(intf, pegasus);
1366 SET_NETDEV_DEV(net, &intf->dev);
1367 pegasus_reset_wol(net);
1368 res = register_netdev(net);
1369 if (res)
1370 goto out3;
1371 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1372 CARRIER_CHECK_DELAY);
1373
1374 dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n",
1375 net->name,
1376 usb_dev_id[dev_index].name,
1377 net->dev_addr [0], net->dev_addr [1],
1378 net->dev_addr [2], net->dev_addr [3],
1379 net->dev_addr [4], net->dev_addr [5]);
1380 return 0;
1381
1382 out3:
1383 usb_set_intfdata(intf, NULL);
1384 free_skb_pool(pegasus);
1385 out2:
1386 free_all_urbs(pegasus);
1387 out1:
1388 free_netdev(net);
1389 out:
1390 usb_put_dev(dev);
1391 return res;
1392 }
1393
1394 static void pegasus_disconnect(struct usb_interface *intf)
1395 {
1396 struct pegasus *pegasus = usb_get_intfdata(intf);
1397
1398 usb_set_intfdata(intf, NULL);
1399 if (!pegasus) {
1400 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1401 return;
1402 }
1403
1404 pegasus->flags |= PEGASUS_UNPLUG;
1405 cancel_delayed_work(&pegasus->carrier_check);
1406 unregister_netdev(pegasus->net);
1407 usb_put_dev(interface_to_usbdev(intf));
1408 unlink_all_urbs(pegasus);
1409 free_all_urbs(pegasus);
1410 free_skb_pool(pegasus);
1411 if (pegasus->rx_skb)
1412 dev_kfree_skb(pegasus->rx_skb);
1413 free_netdev(pegasus->net);
1414 }
1415
1416 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1417 {
1418 struct pegasus *pegasus = usb_get_intfdata(intf);
1419
1420 netif_device_detach (pegasus->net);
1421 cancel_delayed_work(&pegasus->carrier_check);
1422 if (netif_running(pegasus->net)) {
1423 usb_kill_urb(pegasus->rx_urb);
1424 usb_kill_urb(pegasus->intr_urb);
1425 }
1426 return 0;
1427 }
1428
1429 static int pegasus_resume (struct usb_interface *intf)
1430 {
1431 struct pegasus *pegasus = usb_get_intfdata(intf);
1432
1433 netif_device_attach (pegasus->net);
1434 if (netif_running(pegasus->net)) {
1435 pegasus->rx_urb->status = 0;
1436 pegasus->rx_urb->actual_length = 0;
1437 read_bulk_callback(pegasus->rx_urb);
1438
1439 pegasus->intr_urb->status = 0;
1440 pegasus->intr_urb->actual_length = 0;
1441 intr_callback(pegasus->intr_urb);
1442 }
1443 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1444 CARRIER_CHECK_DELAY);
1445 return 0;
1446 }
1447
1448 static struct usb_driver pegasus_driver = {
1449 .name = driver_name,
1450 .probe = pegasus_probe,
1451 .disconnect = pegasus_disconnect,
1452 .id_table = pegasus_ids,
1453 .suspend = pegasus_suspend,
1454 .resume = pegasus_resume,
1455 };
1456
1457 static void parse_id(char *id)
1458 {
1459 unsigned int vendor_id=0, device_id=0, flags=0, i=0;
1460 char *token, *name=NULL;
1461
1462 if ((token = strsep(&id, ":")) != NULL)
1463 name = token;
1464 /* name now points to a null terminated string*/
1465 if ((token = strsep(&id, ":")) != NULL)
1466 vendor_id = simple_strtoul(token, NULL, 16);
1467 if ((token = strsep(&id, ":")) != NULL)
1468 device_id = simple_strtoul(token, NULL, 16);
1469 flags = simple_strtoul(id, NULL, 16);
1470 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1471 driver_name, name, vendor_id, device_id, flags);
1472
1473 if (vendor_id > 0x10000 || vendor_id == 0)
1474 return;
1475 if (device_id > 0x10000 || device_id == 0)
1476 return;
1477
1478 for (i=0; usb_dev_id[i].name; i++);
1479 usb_dev_id[i].name = name;
1480 usb_dev_id[i].vendor = vendor_id;
1481 usb_dev_id[i].device = device_id;
1482 usb_dev_id[i].private = flags;
1483 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1484 pegasus_ids[i].idVendor = vendor_id;
1485 pegasus_ids[i].idProduct = device_id;
1486 }
1487
1488 static int __init pegasus_init(void)
1489 {
1490 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1491 if (devid)
1492 parse_id(devid);
1493 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1494 if (!pegasus_workqueue)
1495 return -ENOMEM;
1496 return usb_register(&pegasus_driver);
1497 }
1498
1499 static void __exit pegasus_exit(void)
1500 {
1501 destroy_workqueue(pegasus_workqueue);
1502 usb_deregister(&pegasus_driver);
1503 }
1504
1505 module_init(pegasus_init);
1506 module_exit(pegasus_exit);
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