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[linux/fpc-iii.git] / drivers / net / usb / pegasus.c
blob6fdaba8674b9104af6dcbda8d2132d68b9abc51b
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 static const struct net_device_ops pegasus_netdev_ops;
97
98 static int update_eth_regs_async(pegasus_t *);
99 /* Aargh!!! I _really_ hate such tweaks */
100 static void ctrl_callback(struct urb *urb)
101 {
102 pegasus_t *pegasus = urb->context;
103 int status = urb->status;
104
105 if (!pegasus)
106 return;
107
108 switch (status) {
109 case 0:
110 if (pegasus->flags & ETH_REGS_CHANGE) {
111 pegasus->flags &= ~ETH_REGS_CHANGE;
112 pegasus->flags |= ETH_REGS_CHANGED;
113 update_eth_regs_async(pegasus);
114 return;
115 }
116 break;
117 case -EINPROGRESS:
118 return;
119 case -ENOENT:
120 break;
121 default:
122 if (netif_msg_drv(pegasus) && printk_ratelimit())
123 dev_dbg(&pegasus->intf->dev, "%s, status %d\n",
124 __func__, status);
125 }
126 pegasus->flags &= ~ETH_REGS_CHANGED;
127 wake_up(&pegasus->ctrl_wait);
128 }
129
130 static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
131 void *data)
132 {
133 int ret;
134 char *buffer;
135 DECLARE_WAITQUEUE(wait, current);
136
137 buffer = kmalloc(size, GFP_KERNEL);
138 if (!buffer) {
139 if (netif_msg_drv(pegasus))
140 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
141 __func__);
142 return -ENOMEM;
143 }
144 add_wait_queue(&pegasus->ctrl_wait, &wait);
145 set_current_state(TASK_UNINTERRUPTIBLE);
146 while (pegasus->flags & ETH_REGS_CHANGED)
147 schedule();
148 remove_wait_queue(&pegasus->ctrl_wait, &wait);
149 set_current_state(TASK_RUNNING);
150
151 pegasus->dr.bRequestType = PEGASUS_REQT_READ;
152 pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
153 pegasus->dr.wValue = cpu_to_le16(0);
154 pegasus->dr.wIndex = cpu_to_le16(indx);
155 pegasus->dr.wLength = cpu_to_le16(size);
156 pegasus->ctrl_urb->transfer_buffer_length = size;
157
158 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
159 usb_rcvctrlpipe(pegasus->usb, 0),
160 (char *) &pegasus->dr,
161 buffer, size, ctrl_callback, pegasus);
162
163 add_wait_queue(&pegasus->ctrl_wait, &wait);
164 set_current_state(TASK_UNINTERRUPTIBLE);
165
166 /* using ATOMIC, we'd never wake up if we slept */
167 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
168 set_current_state(TASK_RUNNING);
169 if (ret == -ENODEV)
170 netif_device_detach(pegasus->net);
171 if (netif_msg_drv(pegasus) && printk_ratelimit())
172 dev_err(&pegasus->intf->dev, "%s, status %d\n",
173 __func__, ret);
174 goto out;
175 }
176
177 schedule();
178 out:
179 remove_wait_queue(&pegasus->ctrl_wait, &wait);
180 memcpy(data, buffer, size);
181 kfree(buffer);
182
183 return ret;
184 }
185
186 static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
187 void *data)
188 {
189 int ret;
190 char *buffer;
191 DECLARE_WAITQUEUE(wait, current);
192
193 buffer = kmalloc(size, GFP_KERNEL);
194 if (!buffer) {
195 if (netif_msg_drv(pegasus))
196 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
197 __func__);
198 return -ENOMEM;
199 }
200 memcpy(buffer, data, size);
201
202 add_wait_queue(&pegasus->ctrl_wait, &wait);
203 set_current_state(TASK_UNINTERRUPTIBLE);
204 while (pegasus->flags & ETH_REGS_CHANGED)
205 schedule();
206 remove_wait_queue(&pegasus->ctrl_wait, &wait);
207 set_current_state(TASK_RUNNING);
208
209 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
210 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
211 pegasus->dr.wValue = cpu_to_le16(0);
212 pegasus->dr.wIndex = cpu_to_le16(indx);
213 pegasus->dr.wLength = cpu_to_le16(size);
214 pegasus->ctrl_urb->transfer_buffer_length = size;
215
216 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
217 usb_sndctrlpipe(pegasus->usb, 0),
218 (char *) &pegasus->dr,
219 buffer, size, ctrl_callback, pegasus);
220
221 add_wait_queue(&pegasus->ctrl_wait, &wait);
222 set_current_state(TASK_UNINTERRUPTIBLE);
223
224 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
225 if (ret == -ENODEV)
226 netif_device_detach(pegasus->net);
227 if (netif_msg_drv(pegasus))
228 dev_err(&pegasus->intf->dev, "%s, status %d\n",
229 __func__, ret);
230 goto out;
231 }
232
233 schedule();
234 out:
235 remove_wait_queue(&pegasus->ctrl_wait, &wait);
236 kfree(buffer);
237
238 return ret;
239 }
240
241 static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
242 {
243 int ret;
244 char *tmp;
245 DECLARE_WAITQUEUE(wait, current);
246
247 tmp = kmalloc(1, GFP_KERNEL);
248 if (!tmp) {
249 if (netif_msg_drv(pegasus))
250 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
251 __func__);
252 return -ENOMEM;
253 }
254 memcpy(tmp, &data, 1);
255 add_wait_queue(&pegasus->ctrl_wait, &wait);
256 set_current_state(TASK_UNINTERRUPTIBLE);
257 while (pegasus->flags & ETH_REGS_CHANGED)
258 schedule();
259 remove_wait_queue(&pegasus->ctrl_wait, &wait);
260 set_current_state(TASK_RUNNING);
261
262 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
263 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
264 pegasus->dr.wValue = cpu_to_le16(data);
265 pegasus->dr.wIndex = cpu_to_le16(indx);
266 pegasus->dr.wLength = cpu_to_le16(1);
267 pegasus->ctrl_urb->transfer_buffer_length = 1;
268
269 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
270 usb_sndctrlpipe(pegasus->usb, 0),
271 (char *) &pegasus->dr,
272 tmp, 1, ctrl_callback, pegasus);
273
274 add_wait_queue(&pegasus->ctrl_wait, &wait);
275 set_current_state(TASK_UNINTERRUPTIBLE);
276
277 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
278 if (ret == -ENODEV)
279 netif_device_detach(pegasus->net);
280 if (netif_msg_drv(pegasus) && printk_ratelimit())
281 dev_err(&pegasus->intf->dev, "%s, status %d\n",
282 __func__, ret);
283 goto out;
284 }
285
286 schedule();
287 out:
288 remove_wait_queue(&pegasus->ctrl_wait, &wait);
289 kfree(tmp);
290
291 return ret;
292 }
293
294 static int update_eth_regs_async(pegasus_t * pegasus)
295 {
296 int ret;
297
298 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
299 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
300 pegasus->dr.wValue = cpu_to_le16(0);
301 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
302 pegasus->dr.wLength = cpu_to_le16(3);
303 pegasus->ctrl_urb->transfer_buffer_length = 3;
304
305 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
306 usb_sndctrlpipe(pegasus->usb, 0),
307 (char *) &pegasus->dr,
308 pegasus->eth_regs, 3, ctrl_callback, pegasus);
309
310 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
311 if (ret == -ENODEV)
312 netif_device_detach(pegasus->net);
313 if (netif_msg_drv(pegasus))
314 dev_err(&pegasus->intf->dev, "%s, status %d\n",
315 __func__, ret);
316 }
317
318 return ret;
319 }
320
321 /* Returns 0 on success, error on failure */
322 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
323 {
324 int i;
325 __u8 data[4] = { phy, 0, 0, indx };
326 __le16 regdi;
327 int ret;
328
329 set_register(pegasus, PhyCtrl, 0);
330 set_registers(pegasus, PhyAddr, sizeof (data), data);
331 set_register(pegasus, PhyCtrl, (indx | PHY_READ));
332 for (i = 0; i < REG_TIMEOUT; i++) {
333 ret = get_registers(pegasus, PhyCtrl, 1, data);
334 if (ret == -ESHUTDOWN)
335 goto fail;
336 if (data[0] & PHY_DONE)
337 break;
338 }
339 if (i < REG_TIMEOUT) {
340 ret = get_registers(pegasus, PhyData, 2, &regdi);
341 *regd = le16_to_cpu(regdi);
342 return ret;
343 }
344 fail:
345 if (netif_msg_drv(pegasus))
346 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__);
347
348 return ret;
349 }
350
351 static int mdio_read(struct net_device *dev, int phy_id, int loc)
352 {
353 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
354 u16 res;
355
356 read_mii_word(pegasus, phy_id, loc, &res);
357 return (int)res;
358 }
359
360 static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
361 {
362 int i;
363 __u8 data[4] = { phy, 0, 0, indx };
364 int ret;
365
366 data[1] = (u8) regd;
367 data[2] = (u8) (regd >> 8);
368 set_register(pegasus, PhyCtrl, 0);
369 set_registers(pegasus, PhyAddr, sizeof(data), data);
370 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
371 for (i = 0; i < REG_TIMEOUT; i++) {
372 ret = get_registers(pegasus, PhyCtrl, 1, data);
373 if (ret == -ESHUTDOWN)
374 goto fail;
375 if (data[0] & PHY_DONE)
376 break;
377 }
378 if (i < REG_TIMEOUT)
379 return ret;
380
381 fail:
382 if (netif_msg_drv(pegasus))
383 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__);
384 return -ETIMEDOUT;
385 }
386
387 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
388 {
389 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
390
391 write_mii_word(pegasus, phy_id, loc, val);
392 }
393
394 static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
395 {
396 int i;
397 __u8 tmp;
398 __le16 retdatai;
399 int ret;
400
401 set_register(pegasus, EpromCtrl, 0);
402 set_register(pegasus, EpromOffset, index);
403 set_register(pegasus, EpromCtrl, EPROM_READ);
404
405 for (i = 0; i < REG_TIMEOUT; i++) {
406 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
407 if (tmp & EPROM_DONE)
408 break;
409 if (ret == -ESHUTDOWN)
410 goto fail;
411 }
412 if (i < REG_TIMEOUT) {
413 ret = get_registers(pegasus, EpromData, 2, &retdatai);
414 *retdata = le16_to_cpu(retdatai);
415 return ret;
416 }
417
418 fail:
419 if (netif_msg_drv(pegasus))
420 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__);
421 return -ETIMEDOUT;
422 }
423
424 #ifdef PEGASUS_WRITE_EEPROM
425 static inline void enable_eprom_write(pegasus_t * pegasus)
426 {
427 __u8 tmp;
428 int ret;
429
430 get_registers(pegasus, EthCtrl2, 1, &tmp);
431 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
432 }
433
434 static inline void disable_eprom_write(pegasus_t * pegasus)
435 {
436 __u8 tmp;
437 int ret;
438
439 get_registers(pegasus, EthCtrl2, 1, &tmp);
440 set_register(pegasus, EpromCtrl, 0);
441 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
442 }
443
444 static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
445 {
446 int i;
447 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
448 int ret;
449 __le16 le_data = cpu_to_le16(data);
450
451 set_registers(pegasus, EpromOffset, 4, d);
452 enable_eprom_write(pegasus);
453 set_register(pegasus, EpromOffset, index);
454 set_registers(pegasus, EpromData, 2, &le_data);
455 set_register(pegasus, EpromCtrl, EPROM_WRITE);
456
457 for (i = 0; i < REG_TIMEOUT; i++) {
458 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
459 if (ret == -ESHUTDOWN)
460 goto fail;
461 if (tmp & EPROM_DONE)
462 break;
463 }
464 disable_eprom_write(pegasus);
465 if (i < REG_TIMEOUT)
466 return ret;
467 fail:
468 if (netif_msg_drv(pegasus))
469 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__);
470 return -ETIMEDOUT;
471 }
472 #endif /* PEGASUS_WRITE_EEPROM */
473
474 static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
475 {
476 int i;
477 __u16 w16;
478
479 for (i = 0; i < 3; i++) {
480 read_eprom_word(pegasus, i, &w16);
481 ((__le16 *) id)[i] = cpu_to_le16(w16);
482 }
483 }
484
485 static void set_ethernet_addr(pegasus_t * pegasus)
486 {
487 __u8 node_id[6];
488
489 if (pegasus->features & PEGASUS_II) {
490 get_registers(pegasus, 0x10, sizeof(node_id), node_id);
491 } else {
492 get_node_id(pegasus, node_id);
493 set_registers(pegasus, EthID, sizeof (node_id), node_id);
494 }
495 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
496 }
497
498 static inline int reset_mac(pegasus_t * pegasus)
499 {
500 __u8 data = 0x8;
501 int i;
502
503 set_register(pegasus, EthCtrl1, data);
504 for (i = 0; i < REG_TIMEOUT; i++) {
505 get_registers(pegasus, EthCtrl1, 1, &data);
506 if (~data & 0x08) {
507 if (loopback & 1)
508 break;
509 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
510 set_register(pegasus, Gpio1, 0x34);
511 else
512 set_register(pegasus, Gpio1, 0x26);
513 set_register(pegasus, Gpio0, pegasus->features);
514 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
515 break;
516 }
517 }
518 if (i == REG_TIMEOUT)
519 return -ETIMEDOUT;
520
521 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
522 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
523 set_register(pegasus, Gpio0, 0x24);
524 set_register(pegasus, Gpio0, 0x26);
525 }
526 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
527 __u16 auxmode;
528 read_mii_word(pegasus, 3, 0x1b, &auxmode);
529 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
530 }
531
532 return 0;
533 }
534
535 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
536 {
537 __u16 linkpart;
538 __u8 data[4];
539 pegasus_t *pegasus = netdev_priv(dev);
540 int ret;
541
542 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
543 data[0] = 0xc9;
544 data[1] = 0;
545 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
546 data[1] |= 0x20; /* set full duplex */
547 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
548 data[1] |= 0x10; /* set 100 Mbps */
549 if (mii_mode)
550 data[1] = 0;
551 data[2] = (loopback & 1) ? 0x09 : 0x01;
552
553 memcpy(pegasus->eth_regs, data, sizeof (data));
554 ret = set_registers(pegasus, EthCtrl0, 3, data);
555
556 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
557 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
558 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
559 u16 auxmode;
560 read_mii_word(pegasus, 0, 0x1b, &auxmode);
561 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
562 }
563
564 return ret;
565 }
566
567 static void fill_skb_pool(pegasus_t * pegasus)
568 {
569 int i;
570
571 for (i = 0; i < RX_SKBS; i++) {
572 if (pegasus->rx_pool[i])
573 continue;
574 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
575 /*
576 ** we give up if the allocation fail. the tasklet will be
577 ** rescheduled again anyway...
578 */
579 if (pegasus->rx_pool[i] == NULL)
580 return;
581 skb_reserve(pegasus->rx_pool[i], 2);
582 }
583 }
584
585 static void free_skb_pool(pegasus_t * pegasus)
586 {
587 int i;
588
589 for (i = 0; i < RX_SKBS; i++) {
590 if (pegasus->rx_pool[i]) {
591 dev_kfree_skb(pegasus->rx_pool[i]);
592 pegasus->rx_pool[i] = NULL;
593 }
594 }
595 }
596
597 static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
598 {
599 int i;
600 struct sk_buff *skb;
601
602 for (i = 0; i < RX_SKBS; i++) {
603 if (likely(pegasus->rx_pool[i] != NULL)) {
604 skb = pegasus->rx_pool[i];
605 pegasus->rx_pool[i] = NULL;
606 return skb;
607 }
608 }
609 return NULL;
610 }
611
612 static void read_bulk_callback(struct urb *urb)
613 {
614 pegasus_t *pegasus = urb->context;
615 struct net_device *net;
616 int rx_status, count = urb->actual_length;
617 int status = urb->status;
618 u8 *buf = urb->transfer_buffer;
619 __u16 pkt_len;
620
621 if (!pegasus)
622 return;
623
624 net = pegasus->net;
625 if (!netif_device_present(net) || !netif_running(net))
626 return;
627
628 switch (status) {
629 case 0:
630 break;
631 case -ETIME:
632 if (netif_msg_rx_err(pegasus))
633 pr_debug("%s: reset MAC\n", net->name);
634 pegasus->flags &= ~PEGASUS_RX_BUSY;
635 break;
636 case -EPIPE: /* stall, or disconnect from TT */
637 /* FIXME schedule work to clear the halt */
638 if (netif_msg_rx_err(pegasus))
639 printk(KERN_WARNING "%s: no rx stall recovery\n",
640 net->name);
641 return;
642 case -ENOENT:
643 case -ECONNRESET:
644 case -ESHUTDOWN:
645 if (netif_msg_ifdown(pegasus))
646 pr_debug("%s: rx unlink, %d\n", net->name, status);
647 return;
648 default:
649 if (netif_msg_rx_err(pegasus))
650 pr_debug("%s: RX status %d\n", net->name, status);
651 goto goon;
652 }
653
654 if (!count || count < 4)
655 goto goon;
656
657 rx_status = buf[count - 2];
658 if (rx_status & 0x1e) {
659 if (netif_msg_rx_err(pegasus))
660 pr_debug("%s: RX packet error %x\n",
661 net->name, rx_status);
662 pegasus->stats.rx_errors++;
663 if (rx_status & 0x06) // long or runt
664 pegasus->stats.rx_length_errors++;
665 if (rx_status & 0x08)
666 pegasus->stats.rx_crc_errors++;
667 if (rx_status & 0x10) // extra bits
668 pegasus->stats.rx_frame_errors++;
669 goto goon;
670 }
671 if (pegasus->chip == 0x8513) {
672 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
673 pkt_len &= 0x0fff;
674 pegasus->rx_skb->data += 2;
675 } else {
676 pkt_len = buf[count - 3] << 8;
677 pkt_len += buf[count - 4];
678 pkt_len &= 0xfff;
679 pkt_len -= 8;
680 }
681
682 /*
683 * If the packet is unreasonably long, quietly drop it rather than
684 * kernel panicing by calling skb_put.
685 */
686 if (pkt_len > PEGASUS_MTU)
687 goto goon;
688
689 /*
690 * at this point we are sure pegasus->rx_skb != NULL
691 * so we go ahead and pass up the packet.
692 */
693 skb_put(pegasus->rx_skb, pkt_len);
694 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
695 netif_rx(pegasus->rx_skb);
696 pegasus->stats.rx_packets++;
697 pegasus->stats.rx_bytes += pkt_len;
698
699 if (pegasus->flags & PEGASUS_UNPLUG)
700 return;
701
702 spin_lock(&pegasus->rx_pool_lock);
703 pegasus->rx_skb = pull_skb(pegasus);
704 spin_unlock(&pegasus->rx_pool_lock);
705
706 if (pegasus->rx_skb == NULL)
707 goto tl_sched;
708 goon:
709 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
710 usb_rcvbulkpipe(pegasus->usb, 1),
711 pegasus->rx_skb->data, PEGASUS_MTU + 8,
712 read_bulk_callback, pegasus);
713 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
714 if (rx_status == -ENODEV)
715 netif_device_detach(pegasus->net);
716 else if (rx_status) {
717 pegasus->flags |= PEGASUS_RX_URB_FAIL;
718 goto tl_sched;
719 } else {
720 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
721 }
722
723 return;
724
725 tl_sched:
726 tasklet_schedule(&pegasus->rx_tl);
727 }
728
729 static void rx_fixup(unsigned long data)
730 {
731 pegasus_t *pegasus;
732 unsigned long flags;
733 int status;
734
735 pegasus = (pegasus_t *) data;
736 if (pegasus->flags & PEGASUS_UNPLUG)
737 return;
738
739 spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
740 fill_skb_pool(pegasus);
741 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
742 if (pegasus->rx_skb)
743 goto try_again;
744 if (pegasus->rx_skb == NULL) {
745 pegasus->rx_skb = pull_skb(pegasus);
746 }
747 if (pegasus->rx_skb == NULL) {
748 if (netif_msg_rx_err(pegasus))
749 printk(KERN_WARNING "%s: low on memory\n",
750 pegasus->net->name);
751 tasklet_schedule(&pegasus->rx_tl);
752 goto done;
753 }
754 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
755 usb_rcvbulkpipe(pegasus->usb, 1),
756 pegasus->rx_skb->data, PEGASUS_MTU + 8,
757 read_bulk_callback, pegasus);
758 try_again:
759 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
760 if (status == -ENODEV)
761 netif_device_detach(pegasus->net);
762 else if (status) {
763 pegasus->flags |= PEGASUS_RX_URB_FAIL;
764 tasklet_schedule(&pegasus->rx_tl);
765 } else {
766 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
767 }
768 done:
769 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
770 }
771
772 static void write_bulk_callback(struct urb *urb)
773 {
774 pegasus_t *pegasus = urb->context;
775 struct net_device *net;
776 int status = urb->status;
777
778 if (!pegasus)
779 return;
780
781 net = pegasus->net;
782
783 if (!netif_device_present(net) || !netif_running(net))
784 return;
785
786 switch (status) {
787 case -EPIPE:
788 /* FIXME schedule_work() to clear the tx halt */
789 netif_stop_queue(net);
790 if (netif_msg_tx_err(pegasus))
791 printk(KERN_WARNING "%s: no tx stall recovery\n",
792 net->name);
793 return;
794 case -ENOENT:
795 case -ECONNRESET:
796 case -ESHUTDOWN:
797 if (netif_msg_ifdown(pegasus))
798 pr_debug("%s: tx unlink, %d\n", net->name, status);
799 return;
800 default:
801 if (netif_msg_tx_err(pegasus))
802 pr_info("%s: TX status %d\n", net->name, status);
803 /* FALL THROUGH */
804 case 0:
805 break;
806 }
807
808 net->trans_start = jiffies;
809 netif_wake_queue(net);
810 }
811
812 static void intr_callback(struct urb *urb)
813 {
814 pegasus_t *pegasus = urb->context;
815 struct net_device *net;
816 int res, status = urb->status;
817
818 if (!pegasus)
819 return;
820 net = pegasus->net;
821
822 switch (status) {
823 case 0:
824 break;
825 case -ECONNRESET: /* unlink */
826 case -ENOENT:
827 case -ESHUTDOWN:
828 return;
829 default:
830 /* some Pegasus-I products report LOTS of data
831 * toggle errors... avoid log spamming
832 */
833 if (netif_msg_timer(pegasus))
834 pr_debug("%s: intr status %d\n", net->name,
835 status);
836 }
837
838 if (urb->actual_length >= 6) {
839 u8 * d = urb->transfer_buffer;
840
841 /* byte 0 == tx_status1, reg 2B */
842 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
843 |LATE_COL|JABBER_TIMEOUT)) {
844 pegasus->stats.tx_errors++;
845 if (d[0] & TX_UNDERRUN)
846 pegasus->stats.tx_fifo_errors++;
847 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
848 pegasus->stats.tx_aborted_errors++;
849 if (d[0] & LATE_COL)
850 pegasus->stats.tx_window_errors++;
851 }
852
853 /* d[5].LINK_STATUS lies on some adapters.
854 * d[0].NO_CARRIER kicks in only with failed TX.
855 * ... so monitoring with MII may be safest.
856 */
857
858 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
859 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
860 }
861
862 res = usb_submit_urb(urb, GFP_ATOMIC);
863 if (res == -ENODEV)
864 netif_device_detach(pegasus->net);
865 if (res && netif_msg_timer(pegasus))
866 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
867 net->name, res);
868 }
869
870 static void pegasus_tx_timeout(struct net_device *net)
871 {
872 pegasus_t *pegasus = netdev_priv(net);
873 if (netif_msg_timer(pegasus))
874 printk(KERN_WARNING "%s: tx timeout\n", net->name);
875 usb_unlink_urb(pegasus->tx_urb);
876 pegasus->stats.tx_errors++;
877 }
878
879 static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb,
880 struct net_device *net)
881 {
882 pegasus_t *pegasus = netdev_priv(net);
883 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
884 int res;
885 __u16 l16 = skb->len;
886
887 netif_stop_queue(net);
888
889 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
890 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
891 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
892 usb_sndbulkpipe(pegasus->usb, 2),
893 pegasus->tx_buff, count,
894 write_bulk_callback, pegasus);
895 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
896 if (netif_msg_tx_err(pegasus))
897 printk(KERN_WARNING "%s: fail tx, %d\n",
898 net->name, res);
899 switch (res) {
900 case -EPIPE: /* stall, or disconnect from TT */
901 /* cleanup should already have been scheduled */
902 break;
903 case -ENODEV: /* disconnect() upcoming */
904 case -EPERM:
905 netif_device_detach(pegasus->net);
906 break;
907 default:
908 pegasus->stats.tx_errors++;
909 netif_start_queue(net);
910 }
911 } else {
912 pegasus->stats.tx_packets++;
913 pegasus->stats.tx_bytes += skb->len;
914 net->trans_start = jiffies;
915 }
916 dev_kfree_skb(skb);
917
918 return NETDEV_TX_OK;
919 }
920
921 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
922 {
923 return &((pegasus_t *) netdev_priv(dev))->stats;
924 }
925
926 static inline void disable_net_traffic(pegasus_t * pegasus)
927 {
928 __le16 tmp = cpu_to_le16(0);
929
930 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp);
931 }
932
933 static inline void get_interrupt_interval(pegasus_t * pegasus)
934 {
935 u16 data;
936 u8 interval;
937
938 read_eprom_word(pegasus, 4, &data);
939 interval = data >> 8;
940 if (pegasus->usb->speed != USB_SPEED_HIGH) {
941 if (interval < 0x80) {
942 if (netif_msg_timer(pegasus))
943 dev_info(&pegasus->intf->dev, "intr interval "
944 "changed from %ums to %ums\n",
945 interval, 0x80);
946 interval = 0x80;
947 data = (data & 0x00FF) | ((u16)interval << 8);
948 #ifdef PEGASUS_WRITE_EEPROM
949 write_eprom_word(pegasus, 4, data);
950 #endif
951 }
952 }
953 pegasus->intr_interval = interval;
954 }
955
956 static void set_carrier(struct net_device *net)
957 {
958 pegasus_t *pegasus = netdev_priv(net);
959 u16 tmp;
960
961 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
962 return;
963
964 if (tmp & BMSR_LSTATUS)
965 netif_carrier_on(net);
966 else
967 netif_carrier_off(net);
968 }
969
970 static void free_all_urbs(pegasus_t * pegasus)
971 {
972 usb_free_urb(pegasus->intr_urb);
973 usb_free_urb(pegasus->tx_urb);
974 usb_free_urb(pegasus->rx_urb);
975 usb_free_urb(pegasus->ctrl_urb);
976 }
977
978 static void unlink_all_urbs(pegasus_t * pegasus)
979 {
980 usb_kill_urb(pegasus->intr_urb);
981 usb_kill_urb(pegasus->tx_urb);
982 usb_kill_urb(pegasus->rx_urb);
983 usb_kill_urb(pegasus->ctrl_urb);
984 }
985
986 static int alloc_urbs(pegasus_t * pegasus)
987 {
988 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
989 if (!pegasus->ctrl_urb) {
990 return 0;
991 }
992 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
993 if (!pegasus->rx_urb) {
994 usb_free_urb(pegasus->ctrl_urb);
995 return 0;
996 }
997 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
998 if (!pegasus->tx_urb) {
999 usb_free_urb(pegasus->rx_urb);
1000 usb_free_urb(pegasus->ctrl_urb);
1001 return 0;
1002 }
1003 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
1004 if (!pegasus->intr_urb) {
1005 usb_free_urb(pegasus->tx_urb);
1006 usb_free_urb(pegasus->rx_urb);
1007 usb_free_urb(pegasus->ctrl_urb);
1008 return 0;
1009 }
1010
1011 return 1;
1012 }
1013
1014 static int pegasus_open(struct net_device *net)
1015 {
1016 pegasus_t *pegasus = netdev_priv(net);
1017 int res;
1018
1019 if (pegasus->rx_skb == NULL)
1020 pegasus->rx_skb = pull_skb(pegasus);
1021 /*
1022 ** Note: no point to free the pool. it is empty :-)
1023 */
1024 if (!pegasus->rx_skb)
1025 return -ENOMEM;
1026
1027 res = set_registers(pegasus, EthID, 6, net->dev_addr);
1028
1029 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
1030 usb_rcvbulkpipe(pegasus->usb, 1),
1031 pegasus->rx_skb->data, PEGASUS_MTU + 8,
1032 read_bulk_callback, pegasus);
1033 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
1034 if (res == -ENODEV)
1035 netif_device_detach(pegasus->net);
1036 if (netif_msg_ifup(pegasus))
1037 pr_debug("%s: failed rx_urb, %d", net->name, res);
1038 goto exit;
1039 }
1040
1041 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
1042 usb_rcvintpipe(pegasus->usb, 3),
1043 pegasus->intr_buff, sizeof (pegasus->intr_buff),
1044 intr_callback, pegasus, pegasus->intr_interval);
1045 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
1046 if (res == -ENODEV)
1047 netif_device_detach(pegasus->net);
1048 if (netif_msg_ifup(pegasus))
1049 pr_debug("%s: failed intr_urb, %d\n", net->name, res);
1050 usb_kill_urb(pegasus->rx_urb);
1051 goto exit;
1052 }
1053 if ((res = enable_net_traffic(net, pegasus->usb))) {
1054 if (netif_msg_ifup(pegasus))
1055 pr_debug("%s: can't enable_net_traffic() - %d\n",
1056 net->name, res);
1057 res = -EIO;
1058 usb_kill_urb(pegasus->rx_urb);
1059 usb_kill_urb(pegasus->intr_urb);
1060 free_skb_pool(pegasus);
1061 goto exit;
1062 }
1063 set_carrier(net);
1064 netif_start_queue(net);
1065 if (netif_msg_ifup(pegasus))
1066 pr_debug("%s: open\n", net->name);
1067 res = 0;
1068 exit:
1069 return res;
1070 }
1071
1072 static int pegasus_close(struct net_device *net)
1073 {
1074 pegasus_t *pegasus = netdev_priv(net);
1075
1076 netif_stop_queue(net);
1077 if (!(pegasus->flags & PEGASUS_UNPLUG))
1078 disable_net_traffic(pegasus);
1079 tasklet_kill(&pegasus->rx_tl);
1080 unlink_all_urbs(pegasus);
1081
1082 return 0;
1083 }
1084
1085 static void pegasus_get_drvinfo(struct net_device *dev,
1086 struct ethtool_drvinfo *info)
1087 {
1088 pegasus_t *pegasus = netdev_priv(dev);
1089 strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1090 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1091 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1092 }
1093
1094 /* also handles three patterns of some kind in hardware */
1095 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
1096
1097 static void
1098 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1099 {
1100 pegasus_t *pegasus = netdev_priv(dev);
1101
1102 wol->supported = WAKE_MAGIC | WAKE_PHY;
1103 wol->wolopts = pegasus->wolopts;
1104 }
1105
1106 static int
1107 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1108 {
1109 pegasus_t *pegasus = netdev_priv(dev);
1110 u8 reg78 = 0x04;
1111
1112 if (wol->wolopts & ~WOL_SUPPORTED)
1113 return -EINVAL;
1114
1115 if (wol->wolopts & WAKE_MAGIC)
1116 reg78 |= 0x80;
1117 if (wol->wolopts & WAKE_PHY)
1118 reg78 |= 0x40;
1119 /* FIXME this 0x10 bit still needs to get set in the chip... */
1120 if (wol->wolopts)
1121 pegasus->eth_regs[0] |= 0x10;
1122 else
1123 pegasus->eth_regs[0] &= ~0x10;
1124 pegasus->wolopts = wol->wolopts;
1125 return set_register(pegasus, WakeupControl, reg78);
1126 }
1127
1128 static inline void pegasus_reset_wol(struct net_device *dev)
1129 {
1130 struct ethtool_wolinfo wol;
1131
1132 memset(&wol, 0, sizeof wol);
1133 (void) pegasus_set_wol(dev, &wol);
1134 }
1135
1136 static int
1137 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1138 {
1139 pegasus_t *pegasus;
1140
1141 pegasus = netdev_priv(dev);
1142 mii_ethtool_gset(&pegasus->mii, ecmd);
1143 return 0;
1144 }
1145
1146 static int
1147 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1148 {
1149 pegasus_t *pegasus = netdev_priv(dev);
1150 return mii_ethtool_sset(&pegasus->mii, ecmd);
1151 }
1152
1153 static int pegasus_nway_reset(struct net_device *dev)
1154 {
1155 pegasus_t *pegasus = netdev_priv(dev);
1156 return mii_nway_restart(&pegasus->mii);
1157 }
1158
1159 static u32 pegasus_get_link(struct net_device *dev)
1160 {
1161 pegasus_t *pegasus = netdev_priv(dev);
1162 return mii_link_ok(&pegasus->mii);
1163 }
1164
1165 static u32 pegasus_get_msglevel(struct net_device *dev)
1166 {
1167 pegasus_t *pegasus = netdev_priv(dev);
1168 return pegasus->msg_enable;
1169 }
1170
1171 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1172 {
1173 pegasus_t *pegasus = netdev_priv(dev);
1174 pegasus->msg_enable = v;
1175 }
1176
1177 static const struct ethtool_ops ops = {
1178 .get_drvinfo = pegasus_get_drvinfo,
1179 .get_settings = pegasus_get_settings,
1180 .set_settings = pegasus_set_settings,
1181 .nway_reset = pegasus_nway_reset,
1182 .get_link = pegasus_get_link,
1183 .get_msglevel = pegasus_get_msglevel,
1184 .set_msglevel = pegasus_set_msglevel,
1185 .get_wol = pegasus_get_wol,
1186 .set_wol = pegasus_set_wol,
1187 };
1188
1189 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1190 {
1191 __u16 *data = (__u16 *) & rq->ifr_ifru;
1192 pegasus_t *pegasus = netdev_priv(net);
1193 int res;
1194
1195 switch (cmd) {
1196 case SIOCDEVPRIVATE:
1197 data[0] = pegasus->phy;
1198 case SIOCDEVPRIVATE + 1:
1199 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1200 res = 0;
1201 break;
1202 case SIOCDEVPRIVATE + 2:
1203 if (!capable(CAP_NET_ADMIN))
1204 return -EPERM;
1205 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1206 res = 0;
1207 break;
1208 default:
1209 res = -EOPNOTSUPP;
1210 }
1211 return res;
1212 }
1213
1214 static void pegasus_set_multicast(struct net_device *net)
1215 {
1216 pegasus_t *pegasus = netdev_priv(net);
1217
1218 if (net->flags & IFF_PROMISC) {
1219 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1220 if (netif_msg_link(pegasus))
1221 pr_info("%s: Promiscuous mode enabled.\n", net->name);
1222 } else if (net->mc_count || (net->flags & IFF_ALLMULTI)) {
1223 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1224 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1225 if (netif_msg_link(pegasus))
1226 pr_debug("%s: set allmulti\n", net->name);
1227 } else {
1228 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1229 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1230 }
1231
1232 pegasus->ctrl_urb->status = 0;
1233
1234 pegasus->flags |= ETH_REGS_CHANGE;
1235 ctrl_callback(pegasus->ctrl_urb);
1236 }
1237
1238 static __u8 mii_phy_probe(pegasus_t * pegasus)
1239 {
1240 int i;
1241 __u16 tmp;
1242
1243 for (i = 0; i < 32; i++) {
1244 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1245 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1246 continue;
1247 else
1248 return i;
1249 }
1250
1251 return 0xff;
1252 }
1253
1254 static inline void setup_pegasus_II(pegasus_t * pegasus)
1255 {
1256 __u8 data = 0xa5;
1257
1258 set_register(pegasus, Reg1d, 0);
1259 set_register(pegasus, Reg7b, 1);
1260 mdelay(100);
1261 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1262 set_register(pegasus, Reg7b, 0);
1263 else
1264 set_register(pegasus, Reg7b, 2);
1265
1266 set_register(pegasus, 0x83, data);
1267 get_registers(pegasus, 0x83, 1, &data);
1268
1269 if (data == 0xa5) {
1270 pegasus->chip = 0x8513;
1271 } else {
1272 pegasus->chip = 0;
1273 }
1274
1275 set_register(pegasus, 0x80, 0xc0);
1276 set_register(pegasus, 0x83, 0xff);
1277 set_register(pegasus, 0x84, 0x01);
1278
1279 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1280 set_register(pegasus, Reg81, 6);
1281 else
1282 set_register(pegasus, Reg81, 2);
1283 }
1284
1285
1286 static int pegasus_count;
1287 static struct workqueue_struct *pegasus_workqueue = NULL;
1288 #define CARRIER_CHECK_DELAY (2 * HZ)
1289
1290 static void check_carrier(struct work_struct *work)
1291 {
1292 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1293 set_carrier(pegasus->net);
1294 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1295 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1296 CARRIER_CHECK_DELAY);
1297 }
1298 }
1299
1300 static int pegasus_blacklisted(struct usb_device *udev)
1301 {
1302 struct usb_device_descriptor *udd = &udev->descriptor;
1303
1304 /* Special quirk to keep the driver from handling the Belkin Bluetooth
1305 * dongle which happens to have the same ID.
1306 */
1307 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) &&
1308 (udd->idProduct == cpu_to_le16(0x0121)) &&
1309 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
1310 (udd->bDeviceProtocol == 1))
1311 return 1;
1312
1313 return 0;
1314 }
1315
1316 /* we rely on probe() and remove() being serialized so we
1317 * don't need extra locking on pegasus_count.
1318 */
1319 static void pegasus_dec_workqueue(void)
1320 {
1321 pegasus_count--;
1322 if (pegasus_count == 0) {
1323 destroy_workqueue(pegasus_workqueue);
1324 pegasus_workqueue = NULL;
1325 }
1326 }
1327
1328 static int pegasus_probe(struct usb_interface *intf,
1329 const struct usb_device_id *id)
1330 {
1331 struct usb_device *dev = interface_to_usbdev(intf);
1332 struct net_device *net;
1333 pegasus_t *pegasus;
1334 int dev_index = id - pegasus_ids;
1335 int res = -ENOMEM;
1336
1337 if (pegasus_blacklisted(dev))
1338 return -ENODEV;
1339
1340 if (pegasus_count == 0) {
1341 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1342 if (!pegasus_workqueue)
1343 return -ENOMEM;
1344 }
1345 pegasus_count++;
1346
1347 usb_get_dev(dev);
1348
1349 net = alloc_etherdev(sizeof(struct pegasus));
1350 if (!net) {
1351 dev_err(&intf->dev, "can't allocate %s\n", "device");
1352 goto out;
1353 }
1354
1355 pegasus = netdev_priv(net);
1356 pegasus->dev_index = dev_index;
1357 init_waitqueue_head(&pegasus->ctrl_wait);
1358
1359 if (!alloc_urbs(pegasus)) {
1360 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1361 goto out1;
1362 }
1363
1364 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1365
1366 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1367
1368 pegasus->intf = intf;
1369 pegasus->usb = dev;
1370 pegasus->net = net;
1371
1372
1373 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1374 net->netdev_ops = &pegasus_netdev_ops;
1375 SET_ETHTOOL_OPS(net, &ops);
1376 pegasus->mii.dev = net;
1377 pegasus->mii.mdio_read = mdio_read;
1378 pegasus->mii.mdio_write = mdio_write;
1379 pegasus->mii.phy_id_mask = 0x1f;
1380 pegasus->mii.reg_num_mask = 0x1f;
1381 spin_lock_init(&pegasus->rx_pool_lock);
1382 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1383 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1384
1385 pegasus->features = usb_dev_id[dev_index].private;
1386 get_interrupt_interval(pegasus);
1387 if (reset_mac(pegasus)) {
1388 dev_err(&intf->dev, "can't reset MAC\n");
1389 res = -EIO;
1390 goto out2;
1391 }
1392 set_ethernet_addr(pegasus);
1393 fill_skb_pool(pegasus);
1394 if (pegasus->features & PEGASUS_II) {
1395 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1396 setup_pegasus_II(pegasus);
1397 }
1398 pegasus->phy = mii_phy_probe(pegasus);
1399 if (pegasus->phy == 0xff) {
1400 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1401 pegasus->phy = 1;
1402 }
1403 pegasus->mii.phy_id = pegasus->phy;
1404 usb_set_intfdata(intf, pegasus);
1405 SET_NETDEV_DEV(net, &intf->dev);
1406 pegasus_reset_wol(net);
1407 res = register_netdev(net);
1408 if (res)
1409 goto out3;
1410 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1411 CARRIER_CHECK_DELAY);
1412
1413 dev_info(&intf->dev, "%s, %s, %pM\n",
1414 net->name,
1415 usb_dev_id[dev_index].name,
1416 net->dev_addr);
1417 return 0;
1418
1419 out3:
1420 usb_set_intfdata(intf, NULL);
1421 free_skb_pool(pegasus);
1422 out2:
1423 free_all_urbs(pegasus);
1424 out1:
1425 free_netdev(net);
1426 out:
1427 usb_put_dev(dev);
1428 pegasus_dec_workqueue();
1429 return res;
1430 }
1431
1432 static void pegasus_disconnect(struct usb_interface *intf)
1433 {
1434 struct pegasus *pegasus = usb_get_intfdata(intf);
1435
1436 usb_set_intfdata(intf, NULL);
1437 if (!pegasus) {
1438 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1439 return;
1440 }
1441
1442 pegasus->flags |= PEGASUS_UNPLUG;
1443 cancel_delayed_work(&pegasus->carrier_check);
1444 unregister_netdev(pegasus->net);
1445 usb_put_dev(interface_to_usbdev(intf));
1446 unlink_all_urbs(pegasus);
1447 free_all_urbs(pegasus);
1448 free_skb_pool(pegasus);
1449 if (pegasus->rx_skb != NULL) {
1450 dev_kfree_skb(pegasus->rx_skb);
1451 pegasus->rx_skb = NULL;
1452 }
1453 free_netdev(pegasus->net);
1454 pegasus_dec_workqueue();
1455 }
1456
1457 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1458 {
1459 struct pegasus *pegasus = usb_get_intfdata(intf);
1460
1461 netif_device_detach (pegasus->net);
1462 cancel_delayed_work(&pegasus->carrier_check);
1463 if (netif_running(pegasus->net)) {
1464 usb_kill_urb(pegasus->rx_urb);
1465 usb_kill_urb(pegasus->intr_urb);
1466 }
1467 return 0;
1468 }
1469
1470 static int pegasus_resume (struct usb_interface *intf)
1471 {
1472 struct pegasus *pegasus = usb_get_intfdata(intf);
1473
1474 netif_device_attach (pegasus->net);
1475 if (netif_running(pegasus->net)) {
1476 pegasus->rx_urb->status = 0;
1477 pegasus->rx_urb->actual_length = 0;
1478 read_bulk_callback(pegasus->rx_urb);
1479
1480 pegasus->intr_urb->status = 0;
1481 pegasus->intr_urb->actual_length = 0;
1482 intr_callback(pegasus->intr_urb);
1483 }
1484 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1485 CARRIER_CHECK_DELAY);
1486 return 0;
1487 }
1488
1489 static const struct net_device_ops pegasus_netdev_ops = {
1490 .ndo_open = pegasus_open,
1491 .ndo_stop = pegasus_close,
1492 .ndo_do_ioctl = pegasus_ioctl,
1493 .ndo_start_xmit = pegasus_start_xmit,
1494 .ndo_set_multicast_list = pegasus_set_multicast,
1495 .ndo_get_stats = pegasus_netdev_stats,
1496 .ndo_tx_timeout = pegasus_tx_timeout,
1497 .ndo_change_mtu = eth_change_mtu,
1498 .ndo_set_mac_address = eth_mac_addr,
1499 .ndo_validate_addr = eth_validate_addr,
1500 };
1501
1502 static struct usb_driver pegasus_driver = {
1503 .name = driver_name,
1504 .probe = pegasus_probe,
1505 .disconnect = pegasus_disconnect,
1506 .id_table = pegasus_ids,
1507 .suspend = pegasus_suspend,
1508 .resume = pegasus_resume,
1509 };
1510
1511 static void __init parse_id(char *id)
1512 {
1513 unsigned int vendor_id=0, device_id=0, flags=0, i=0;
1514 char *token, *name=NULL;
1515
1516 if ((token = strsep(&id, ":")) != NULL)
1517 name = token;
1518 /* name now points to a null terminated string*/
1519 if ((token = strsep(&id, ":")) != NULL)
1520 vendor_id = simple_strtoul(token, NULL, 16);
1521 if ((token = strsep(&id, ":")) != NULL)
1522 device_id = simple_strtoul(token, NULL, 16);
1523 flags = simple_strtoul(id, NULL, 16);
1524 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1525 driver_name, name, vendor_id, device_id, flags);
1526
1527 if (vendor_id > 0x10000 || vendor_id == 0)
1528 return;
1529 if (device_id > 0x10000 || device_id == 0)
1530 return;
1531
1532 for (i=0; usb_dev_id[i].name; i++);
1533 usb_dev_id[i].name = name;
1534 usb_dev_id[i].vendor = vendor_id;
1535 usb_dev_id[i].device = device_id;
1536 usb_dev_id[i].private = flags;
1537 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1538 pegasus_ids[i].idVendor = vendor_id;
1539 pegasus_ids[i].idProduct = device_id;
1540 }
1541
1542 static int __init pegasus_init(void)
1543 {
1544 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1545 if (devid)
1546 parse_id(devid);
1547 return usb_register(&pegasus_driver);
1548 }
1549
1550 static void __exit pegasus_exit(void)
1551 {
1552 usb_deregister(&pegasus_driver);
1553 }
1554
1555 module_init(pegasus_init);
1556 module_exit(pegasus_exit);
Linux with added FPC-III support