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[PATCH] ub: random cleanups
[deliverable/linux.git] / drivers / usb / net / pegasus.c
CommitLineData
1da177e4
LT		 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
1da177e4
LT		 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 */
4a1728a2 48#define DRIVER_VERSION "v0.6.13 (2005/11/13)"
1da177e4
LT		 49#define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
50#define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
51
52static 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
58static int loopback = 0;
59static int mii_mode = 0;
a4f81a61 60static char *devid=NULL;
1da177e4
LT		 61
62static 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
a4f81a61 67 {NULL, 0, 0, 0},
1da177e4
LT		 68 {NULL, 0, 0, 0}
69};
70
71static 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
a4f81a61 76 {},
1da177e4
LT		 77 {}
78};
79
80MODULE_AUTHOR(DRIVER_AUTHOR);
81MODULE_DESCRIPTION(DRIVER_DESC);
82MODULE_LICENSE("GPL");
83module_param(loopback, bool, 0);
84module_param(mii_mode, bool, 0);
a4f81a61 85module_param(devid, charp, 0);
1da177e4
LT		 86MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
87MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
a4f81a61 88MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
1da177e4
LT		 89
90/* use ethtool to change the level for any given device */
91static int msg_level = -1;
92module_param (msg_level, int, 0);
93MODULE_PARM_DESC (msg_level, "Override default message level");
94
95MODULE_DEVICE_TABLE(usb, pegasus_ids);
96
97static int update_eth_regs_async(pegasus_t *);
98/* Aargh!!! I _really_ hate such tweaks */
99static void ctrl_callback(struct urb *urb, struct pt_regs *regs)
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))
4a1728a2 121 dev_dbg(&pegasus->intf->dev, "%s, status %d\n",
1da177e4
LT		 122 __FUNCTION__, urb->status);
123 }
124 pegasus->flags &= ~ETH_REGS_CHANGED;
125 wake_up(&pegasus->ctrl_wait);
126}
127
128static 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 if (netif_msg_drv(pegasus))
167 dev_err(&pegasus->intf->dev, "%s, status %d\n",
168 __FUNCTION__, ret);
169 goto out;
170 }
171
172 schedule();
173out:
174 remove_wait_queue(&pegasus->ctrl_wait, &wait);
175 memcpy(data, buffer, size);
176 kfree(buffer);
177
178 return ret;
179}
180
181static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
182 void *data)
183{
184 int ret;
185 char *buffer;
186 DECLARE_WAITQUEUE(wait, current);
187
188 buffer = kmalloc(size, GFP_KERNEL);
189 if (!buffer) {
190 if (netif_msg_drv(pegasus))
191 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
192 __FUNCTION__);
193 return -ENOMEM;
194 }
195 memcpy(buffer, data, size);
196
197 add_wait_queue(&pegasus->ctrl_wait, &wait);
198 set_current_state(TASK_UNINTERRUPTIBLE);
199 while (pegasus->flags & ETH_REGS_CHANGED)
200 schedule();
201 remove_wait_queue(&pegasus->ctrl_wait, &wait);
202 set_current_state(TASK_RUNNING);
203
204 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
205 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
206 pegasus->dr.wValue = cpu_to_le16(0);
207 pegasus->dr.wIndex = cpu_to_le16p(&indx);
208 pegasus->dr.wLength = cpu_to_le16p(&size);
209 pegasus->ctrl_urb->transfer_buffer_length = size;
210
211 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
212 usb_sndctrlpipe(pegasus->usb, 0),
213 (char *) &pegasus->dr,
214 buffer, size, ctrl_callback, pegasus);
215
216 add_wait_queue(&pegasus->ctrl_wait, &wait);
217 set_current_state(TASK_UNINTERRUPTIBLE);
218
219 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
220 if (netif_msg_drv(pegasus))
221 dev_err(&pegasus->intf->dev, "%s, status %d\n",
222 __FUNCTION__, ret);
223 goto out;
224 }
225
226 schedule();
227out:
228 remove_wait_queue(&pegasus->ctrl_wait, &wait);
229 kfree(buffer);
230
231 return ret;
232}
233
234static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
235{
236 int ret;
237 char *tmp;
238 DECLARE_WAITQUEUE(wait, current);
239
240 tmp = kmalloc(1, GFP_KERNEL);
241 if (!tmp) {
242 if (netif_msg_drv(pegasus))
243 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
244 __FUNCTION__);
245 return -ENOMEM;
246 }
247 memcpy(tmp, &data, 1);
248 add_wait_queue(&pegasus->ctrl_wait, &wait);
249 set_current_state(TASK_UNINTERRUPTIBLE);
250 while (pegasus->flags & ETH_REGS_CHANGED)
251 schedule();
252 remove_wait_queue(&pegasus->ctrl_wait, &wait);
253 set_current_state(TASK_RUNNING);
254
255 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
256 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
257 pegasus->dr.wValue = cpu_to_le16(data);
258 pegasus->dr.wIndex = cpu_to_le16p(&indx);
259 pegasus->dr.wLength = cpu_to_le16(1);
260 pegasus->ctrl_urb->transfer_buffer_length = 1;
261
262 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
263 usb_sndctrlpipe(pegasus->usb, 0),
264 (char *) &pegasus->dr,
016534cf 265 tmp, 1, ctrl_callback, pegasus);
1da177e4
LT		 266
267 add_wait_queue(&pegasus->ctrl_wait, &wait);
268 set_current_state(TASK_UNINTERRUPTIBLE);
269
270 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
271 if (netif_msg_drv(pegasus))
272 dev_err(&pegasus->intf->dev, "%s, status %d\n",
273 __FUNCTION__, ret);
274 goto out;
275 }
276
277 schedule();
278out:
279 remove_wait_queue(&pegasus->ctrl_wait, &wait);
280 kfree(tmp);
281
282 return ret;
283}
284
285static int update_eth_regs_async(pegasus_t * pegasus)
286{
287 int ret;
288
289 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
290 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
291 pegasus->dr.wValue = 0;
292 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
293 pegasus->dr.wLength = cpu_to_le16(3);
294 pegasus->ctrl_urb->transfer_buffer_length = 3;
295
296 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
297 usb_sndctrlpipe(pegasus->usb, 0),
298 (char *) &pegasus->dr,
299 pegasus->eth_regs, 3, ctrl_callback, pegasus);
300
301 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC)))
302 if (netif_msg_drv(pegasus))
303 dev_err(&pegasus->intf->dev, "%s, status %d\n",
304 __FUNCTION__, ret);
305
306 return ret;
307}
308
309static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
310{
311 int i;
312 __u8 data[4] = { phy, 0, 0, indx };
313 __le16 regdi;
314 int ret;
315
4a1728a2
PM		 316 set_register(pegasus, PhyCtrl, 0);
317 set_registers(pegasus, PhyAddr, sizeof (data), data);
318 set_register(pegasus, PhyCtrl, (indx | PHY_READ));
1da177e4
LT		 319 for (i = 0; i < REG_TIMEOUT; i++) {
320 ret = get_registers(pegasus, PhyCtrl, 1, data);
7e713b82
DB		 321 if (ret == -ESHUTDOWN)
322 goto fail;
1da177e4
LT		 323 if (data[0] & PHY_DONE)
324 break;
325 }
326 if (i < REG_TIMEOUT) {
327 ret = get_registers(pegasus, PhyData, 2, &regdi);
328 *regd = le16_to_cpu(regdi);
4a1728a2 329 return ret;
1da177e4 330 }
7e713b82 331fail:
1da177e4
LT		 332 if (netif_msg_drv(pegasus))
333 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
334
4a1728a2 335 return ret;
1da177e4
LT		 336}
337
338static int mdio_read(struct net_device *dev, int phy_id, int loc)
339{
340 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
341 u16 res;
342
343 read_mii_word(pegasus, phy_id, loc, &res);
344 return (int)res;
345}
346
347static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
348{
349 int i;
350 __u8 data[4] = { phy, 0, 0, indx };
351 int ret;
352
353 data[1] = (u8) regd;
354 data[2] = (u8) (regd >> 8);
4a1728a2
PM		 355 set_register(pegasus, PhyCtrl, 0);
356 set_registers(pegasus, PhyAddr, sizeof(data), data);
357 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
1da177e4
LT		 358 for (i = 0; i < REG_TIMEOUT; i++) {
359 ret = get_registers(pegasus, PhyCtrl, 1, data);
7e713b82
DB		 360 if (ret == -ESHUTDOWN)
361 goto fail;
1da177e4
LT		 362 if (data[0] & PHY_DONE)
363 break;
364 }
365 if (i < REG_TIMEOUT)
4a1728a2 366 return ret;
1da177e4 367
7e713b82 368fail:
1da177e4
LT		 369 if (netif_msg_drv(pegasus))
370 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
4a1728a2 371 return -ETIMEDOUT;
1da177e4
LT		 372}
373
374static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
375{
376 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
377
378 write_mii_word(pegasus, phy_id, loc, val);
379}
380
381static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
382{
383 int i;
384 __u8 tmp;
385 __le16 retdatai;
386 int ret;
387
4a1728a2
PM		 388 set_register(pegasus, EpromCtrl, 0);
389 set_register(pegasus, EpromOffset, index);
390 set_register(pegasus, EpromCtrl, EPROM_READ);
1da177e4
LT		 391
392 for (i = 0; i < REG_TIMEOUT; i++) {
393 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
394 if (tmp & EPROM_DONE)
395 break;
7e713b82
DB		 396 if (ret == -ESHUTDOWN)
397 goto fail;
1da177e4
LT		 398 }
399 if (i < REG_TIMEOUT) {
400 ret = get_registers(pegasus, EpromData, 2, &retdatai);
401 *retdata = le16_to_cpu(retdatai);
4a1728a2 402 return ret;
1da177e4
LT		 403 }
404
7e713b82 405fail:
1da177e4
LT		 406 if (netif_msg_drv(pegasus))
407 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
4a1728a2 408 return -ETIMEDOUT;
1da177e4
LT		 409}
410
411#ifdef PEGASUS_WRITE_EEPROM
412static inline void enable_eprom_write(pegasus_t * pegasus)
413{
414 __u8 tmp;
415 int ret;
416
4a1728a2
PM		 417 get_registers(pegasus, EthCtrl2, 1, &tmp);
418 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
1da177e4
LT		 419}
420
421static inline void disable_eprom_write(pegasus_t * pegasus)
422{
423 __u8 tmp;
424 int ret;
425
4a1728a2
PM		 426 get_registers(pegasus, EthCtrl2, 1, &tmp);
427 set_register(pegasus, EpromCtrl, 0);
428 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
1da177e4
LT		 429}
430
431static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
432{
433 int i;
434 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
435 int ret;
436
4a1728a2 437 set_registers(pegasus, EpromOffset, 4, d);
1da177e4 438 enable_eprom_write(pegasus);
4a1728a2
PM		 439 set_register(pegasus, EpromOffset, index);
440 set_registers(pegasus, EpromData, 2, &data);
441 set_register(pegasus, EpromCtrl, EPROM_WRITE);
1da177e4
LT		 442
443 for (i = 0; i < REG_TIMEOUT; i++) {
444 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
7e713b82
DB		 445 if (ret == -ESHUTDOWN)
446 goto fail;
1da177e4
LT		 447 if (tmp & EPROM_DONE)
448 break;
449 }
450 disable_eprom_write(pegasus);
451 if (i < REG_TIMEOUT)
4a1728a2 452 return ret;
7e713b82 453fail:
1da177e4
LT		 454 if (netif_msg_drv(pegasus))
455 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
4a1728a2 456 return -ETIMEDOUT;
1da177e4
LT		 457}
458#endif /* PEGASUS_WRITE_EEPROM */
459
460static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
461{
462 int i;
463 __u16 w16;
464
465 for (i = 0; i < 3; i++) {
466 read_eprom_word(pegasus, i, &w16);
467 ((__le16 *) id)[i] = cpu_to_le16p(&w16);
468 }
469}
470
471static void set_ethernet_addr(pegasus_t * pegasus)
472{
473 __u8 node_id[6];
1da177e4
LT		 474
475 get_node_id(pegasus, node_id);
4a1728a2 476 set_registers(pegasus, EthID, sizeof (node_id), node_id);
1da177e4
LT		 477 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
478}
479
480static inline int reset_mac(pegasus_t * pegasus)
481{
482 __u8 data = 0x8;
483 int i;
1da177e4 484
4a1728a2 485 set_register(pegasus, EthCtrl1, data);
1da177e4 486 for (i = 0; i < REG_TIMEOUT; i++) {
4a1728a2 487 get_registers(pegasus, EthCtrl1, 1, &data);
1da177e4
LT		 488 if (~data & 0x08) {
489 if (loopback & 1)
490 break;
491 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
4a1728a2 492 set_register(pegasus, Gpio1, 0x34);
1da177e4 493 else
4a1728a2
PM		 494 set_register(pegasus, Gpio1, 0x26);
495 set_register(pegasus, Gpio0, pegasus->features);
496 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
1da177e4
LT		 497 break;
498 }
499 }
500 if (i == REG_TIMEOUT)
4a1728a2 501 return -ETIMEDOUT;
1da177e4
LT		 502
503 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
504 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
4a1728a2
PM		 505 set_register(pegasus, Gpio0, 0x24);
506 set_register(pegasus, Gpio0, 0x26);
1da177e4
LT		 507 }
508 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
509 __u16 auxmode;
510 read_mii_word(pegasus, 3, 0x1b, &auxmode);
511 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
512 }
513
514 return 0;
515}
516
517static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
518{
519 __u16 linkpart;
520 __u8 data[4];
521 pegasus_t *pegasus = netdev_priv(dev);
522 int ret;
523
524 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
525 data[0] = 0xc9;
526 data[1] = 0;
527 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
528 data[1] |= 0x20; /* set full duplex */
529 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
530 data[1] |= 0x10; /* set 100 Mbps */
531 if (mii_mode)
532 data[1] = 0;
533 data[2] = (loopback & 1) ? 0x09 : 0x01;
534
535 memcpy(pegasus->eth_regs, data, sizeof (data));
536 ret = set_registers(pegasus, EthCtrl0, 3, data);
537
538 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
efafe6fb 539 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
1da177e4
LT		 540 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
541 u16 auxmode;
542 read_mii_word(pegasus, 0, 0x1b, &auxmode);
543 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
544 }
545
4a1728a2 546 return ret;
1da177e4
LT		 547}
548
549static void fill_skb_pool(pegasus_t * pegasus)
550{
551 int i;
552
553 for (i = 0; i < RX_SKBS; i++) {
554 if (pegasus->rx_pool[i])
555 continue;
556 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
557 /*
558 ** we give up if the allocation fail. the tasklet will be
559 ** rescheduled again anyway...
560 */
561 if (pegasus->rx_pool[i] == NULL)
562 return;
563 pegasus->rx_pool[i]->dev = pegasus->net;
564 skb_reserve(pegasus->rx_pool[i], 2);
565 }
566}
567
568static void free_skb_pool(pegasus_t * pegasus)
569{
570 int i;
571
572 for (i = 0; i < RX_SKBS; i++) {
573 if (pegasus->rx_pool[i]) {
574 dev_kfree_skb(pegasus->rx_pool[i]);
575 pegasus->rx_pool[i] = NULL;
576 }
577 }
578}
579
580static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
581{
582 int i;
583 struct sk_buff *skb;
584
585 for (i = 0; i < RX_SKBS; i++) {
586 if (likely(pegasus->rx_pool[i] != NULL)) {
587 skb = pegasus->rx_pool[i];
588 pegasus->rx_pool[i] = NULL;
589 return skb;
590 }
591 }
592 return NULL;
593}
594
595static void read_bulk_callback(struct urb *urb, struct pt_regs *regs)
596{
597 pegasus_t *pegasus = urb->context;
598 struct net_device *net;
599 int rx_status, count = urb->actual_length;
600 u8 *buf = urb->transfer_buffer;
601 __u16 pkt_len;
602
603 if (!pegasus)
604 return;
605
606 net = pegasus->net;
607 if (!netif_device_present(net) || !netif_running(net))
608 return;
609
610 switch (urb->status) {
611 case 0:
612 break;
613 case -ETIMEDOUT:
614 if (netif_msg_rx_err(pegasus))
615 pr_debug("%s: reset MAC\n", net->name);
616 pegasus->flags &= ~PEGASUS_RX_BUSY;
617 break;
618 case -EPIPE: /* stall, or disconnect from TT */
619 /* FIXME schedule work to clear the halt */
620 if (netif_msg_rx_err(pegasus))
621 printk(KERN_WARNING "%s: no rx stall recovery\n",
622 net->name);
623 return;
624 case -ENOENT:
625 case -ECONNRESET:
626 case -ESHUTDOWN:
627 if (netif_msg_ifdown(pegasus))
628 pr_debug("%s: rx unlink, %d\n", net->name, urb->status);
629 return;
630 default:
631 if (netif_msg_rx_err(pegasus))
632 pr_debug("%s: RX status %d\n", net->name, urb->status);
633 goto goon;
634 }
635
636 if (!count || count < 4)
637 goto goon;
638
639 rx_status = buf[count - 2];
640 if (rx_status & 0x1e) {
641 if (netif_msg_rx_err(pegasus))
642 pr_debug("%s: RX packet error %x\n",
643 net->name, rx_status);
644 pegasus->stats.rx_errors++;
645 if (rx_status & 0x06) // long or runt
646 pegasus->stats.rx_length_errors++;
647 if (rx_status & 0x08)
648 pegasus->stats.rx_crc_errors++;
649 if (rx_status & 0x10) // extra bits
650 pegasus->stats.rx_frame_errors++;
651 goto goon;
652 }
653 if (pegasus->chip == 0x8513) {
654 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
655 pkt_len &= 0x0fff;
656 pegasus->rx_skb->data += 2;
657 } else {
658 pkt_len = buf[count - 3] << 8;
659 pkt_len += buf[count - 4];
660 pkt_len &= 0xfff;
661 pkt_len -= 8;
662 }
663
a85a46f2
KV		 664 /*
665 * If the packet is unreasonably long, quietly drop it rather than
666 * kernel panicing by calling skb_put.
667 */
668 if (pkt_len > PEGASUS_MTU)
669 goto goon;
670
1da177e4
LT		 671 /*
672 * at this point we are sure pegasus->rx_skb != NULL
673 * so we go ahead and pass up the packet.
674 */
675 skb_put(pegasus->rx_skb, pkt_len);
676 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
677 netif_rx(pegasus->rx_skb);
678 pegasus->stats.rx_packets++;
679 pegasus->stats.rx_bytes += pkt_len;
680
681 if (pegasus->flags & PEGASUS_UNPLUG)
682 return;
683
684 spin_lock(&pegasus->rx_pool_lock);
685 pegasus->rx_skb = pull_skb(pegasus);
686 spin_unlock(&pegasus->rx_pool_lock);
687
688 if (pegasus->rx_skb == NULL)
689 goto tl_sched;
690goon:
691 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
692 usb_rcvbulkpipe(pegasus->usb, 1),
693 pegasus->rx_skb->data, PEGASUS_MTU + 8,
694 read_bulk_callback, pegasus);
695 if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
696 pegasus->flags |= PEGASUS_RX_URB_FAIL;
697 goto tl_sched;
698 } else {
699 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
700 }
701
702 return;
703
704tl_sched:
705 tasklet_schedule(&pegasus->rx_tl);
706}
707
708static void rx_fixup(unsigned long data)
709{
710 pegasus_t *pegasus;
711 unsigned long flags;
712
713 pegasus = (pegasus_t *) data;
714 if (pegasus->flags & PEGASUS_UNPLUG)
715 return;
716
717 spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
718 fill_skb_pool(pegasus);
719 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
720 if (pegasus->rx_skb)
721 goto try_again;
722 if (pegasus->rx_skb == NULL) {
723 pegasus->rx_skb = pull_skb(pegasus);
724 }
725 if (pegasus->rx_skb == NULL) {
726 if (netif_msg_rx_err(pegasus))
727 printk(KERN_WARNING "%s: low on memory\n",
728 pegasus->net->name);
729 tasklet_schedule(&pegasus->rx_tl);
730 goto done;
731 }
732 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
733 usb_rcvbulkpipe(pegasus->usb, 1),
734 pegasus->rx_skb->data, PEGASUS_MTU + 8,
735 read_bulk_callback, pegasus);
736try_again:
737 if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
738 pegasus->flags |= PEGASUS_RX_URB_FAIL;
739 tasklet_schedule(&pegasus->rx_tl);
740 } else {
741 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
742 }
743done:
744 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
745}
746
747static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
748{
749 pegasus_t *pegasus = urb->context;
750 struct net_device *net = pegasus->net;
751
752 if (!pegasus)
753 return;
754
755 if (!netif_device_present(net) || !netif_running(net))
756 return;
757
758 switch (urb->status) {
759 case -EPIPE:
760 /* FIXME schedule_work() to clear the tx halt */
761 netif_stop_queue(net);
762 if (netif_msg_tx_err(pegasus))
763 printk(KERN_WARNING "%s: no tx stall recovery\n",
764 net->name);
765 return;
766 case -ENOENT:
767 case -ECONNRESET:
768 case -ESHUTDOWN:
769 if (netif_msg_ifdown(pegasus))
770 pr_debug("%s: tx unlink, %d\n", net->name, urb->status);
771 return;
772 default:
773 if (netif_msg_tx_err(pegasus))
774 pr_info("%s: TX status %d\n", net->name, urb->status);
775 /* FALL THROUGH */
776 case 0:
777 break;
778 }
779
780 net->trans_start = jiffies;
781 netif_wake_queue(net);
782}
783
784static void intr_callback(struct urb *urb, struct pt_regs *regs)
785{
786 pegasus_t *pegasus = urb->context;
787 struct net_device *net;
788 int status;
789
790 if (!pegasus)
791 return;
792 net = pegasus->net;
793
794 switch (urb->status) {
795 case 0:
796 break;
797 case -ECONNRESET: /* unlink */
798 case -ENOENT:
799 case -ESHUTDOWN:
800 return;
801 default:
802 /* some Pegasus-I products report LOTS of data
803 * toggle errors... avoid log spamming
804 */
805 if (netif_msg_timer(pegasus))
806 pr_debug("%s: intr status %d\n", net->name,
807 urb->status);
808 }
809
810 if (urb->actual_length >= 6) {
811 u8 * d = urb->transfer_buffer;
812
813 /* byte 0 == tx_status1, reg 2B */
814 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
815 |LATE_COL|JABBER_TIMEOUT)) {
816 pegasus->stats.tx_errors++;
817 if (d[0] & TX_UNDERRUN)
818 pegasus->stats.tx_fifo_errors++;
819 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
820 pegasus->stats.tx_aborted_errors++;
821 if (d[0] & LATE_COL)
822 pegasus->stats.tx_window_errors++;
823 }
824
825 /* d[5].LINK_STATUS lies on some adapters.
826 * d[0].NO_CARRIER kicks in only with failed TX.
827 * ... so monitoring with MII may be safest.
828 */
829 if (d[0] & NO_CARRIER)
830 netif_carrier_off(net);
831 else
832 netif_carrier_on(net);
833
834 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
835 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
836 }
837
838 status = usb_submit_urb(urb, SLAB_ATOMIC);
839 if (status && netif_msg_timer(pegasus))
840 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
841 net->name, status);
842}
843
844static void pegasus_tx_timeout(struct net_device *net)
845{
846 pegasus_t *pegasus = netdev_priv(net);
847 if (netif_msg_timer(pegasus))
848 printk(KERN_WARNING "%s: tx timeout\n", net->name);
1da177e4
LT		 849 usb_unlink_urb(pegasus->tx_urb);
850 pegasus->stats.tx_errors++;
851}
852
853static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
854{
855 pegasus_t *pegasus = netdev_priv(net);
856 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
857 int res;
858 __u16 l16 = skb->len;
859
860 netif_stop_queue(net);
861
862 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
863 memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
864 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
865 usb_sndbulkpipe(pegasus->usb, 2),
866 pegasus->tx_buff, count,
867 write_bulk_callback, pegasus);
868 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
869 if (netif_msg_tx_err(pegasus))
870 printk(KERN_WARNING "%s: fail tx, %d\n",
871 net->name, res);
872 switch (res) {
873 case -EPIPE: /* stall, or disconnect from TT */
874 /* cleanup should already have been scheduled */
875 break;
876 case -ENODEV: /* disconnect() upcoming */
877 break;
878 default:
879 pegasus->stats.tx_errors++;
880 netif_start_queue(net);
881 }
882 } else {
883 pegasus->stats.tx_packets++;
884 pegasus->stats.tx_bytes += skb->len;
885 net->trans_start = jiffies;
886 }
887 dev_kfree_skb(skb);
888
889 return 0;
890}
891
892static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
893{
894 return &((pegasus_t *) netdev_priv(dev))->stats;
895}
896
897static inline void disable_net_traffic(pegasus_t * pegasus)
898{
899 int tmp = 0;
1da177e4 900
4a1728a2 901 set_registers(pegasus, EthCtrl0, 2, &tmp);
1da177e4
LT		 902}
903
904static inline void get_interrupt_interval(pegasus_t * pegasus)
905{
906 __u8 data[2];
907
908 read_eprom_word(pegasus, 4, (__u16 *) data);
a85a46f2
KV		 909 if (pegasus->usb->speed != USB_SPEED_HIGH) {
910 if (data[1] < 0x80) {
911 if (netif_msg_timer(pegasus))
912 dev_info(&pegasus->intf->dev, "intr interval "
913 "changed from %ums to %ums\n",
914 data[1], 0x80);
915 data[1] = 0x80;
916#ifdef PEGASUS_WRITE_EEPROM
917 write_eprom_word(pegasus, 4, *(__u16 *) data);
1da177e4 918#endif
a85a46f2 919 }
1da177e4
LT		 920 }
921 pegasus->intr_interval = data[1];
922}
923
924static void set_carrier(struct net_device *net)
925{
926 pegasus_t *pegasus = netdev_priv(net);
927 u16 tmp;
928
a85a46f2 929 if (!read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
1da177e4 930 return;
a85a46f2 931
1da177e4
LT		 932 if (tmp & BMSR_LSTATUS)
933 netif_carrier_on(net);
934 else
935 netif_carrier_off(net);
936}
937
938static void free_all_urbs(pegasus_t * pegasus)
939{
940 usb_free_urb(pegasus->intr_urb);
941 usb_free_urb(pegasus->tx_urb);
942 usb_free_urb(pegasus->rx_urb);
943 usb_free_urb(pegasus->ctrl_urb);
944}
945
946static void unlink_all_urbs(pegasus_t * pegasus)
947{
948 usb_kill_urb(pegasus->intr_urb);
949 usb_kill_urb(pegasus->tx_urb);
950 usb_kill_urb(pegasus->rx_urb);
951 usb_kill_urb(pegasus->ctrl_urb);
952}
953
954static int alloc_urbs(pegasus_t * pegasus)
955{
956 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
957 if (!pegasus->ctrl_urb) {
958 return 0;
959 }
960 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
961 if (!pegasus->rx_urb) {
962 usb_free_urb(pegasus->ctrl_urb);
963 return 0;
964 }
965 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
966 if (!pegasus->tx_urb) {
967 usb_free_urb(pegasus->rx_urb);
968 usb_free_urb(pegasus->ctrl_urb);
969 return 0;
970 }
971 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
972 if (!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 return 0;
977 }
978
979 return 1;
980}
981
982static int pegasus_open(struct net_device *net)
983{
984 pegasus_t *pegasus = netdev_priv(net);
985 int res;
986
987 if (pegasus->rx_skb == NULL)
988 pegasus->rx_skb = pull_skb(pegasus);
989 /*
990 ** Note: no point to free the pool. it is empty :-)
991 */
992 if (!pegasus->rx_skb)
993 return -ENOMEM;
994
995 res = set_registers(pegasus, EthID, 6, net->dev_addr);
996
997 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
998 usb_rcvbulkpipe(pegasus->usb, 1),
999 pegasus->rx_skb->data, PEGASUS_MTU + 8,
1000 read_bulk_callback, pegasus);
1001 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
1002 if (netif_msg_ifup(pegasus))
1003 pr_debug("%s: failed rx_urb, %d", net->name, res);
1004 goto exit;
1005 }
1006
1007 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
1008 usb_rcvintpipe(pegasus->usb, 3),
1009 pegasus->intr_buff, sizeof (pegasus->intr_buff),
1010 intr_callback, pegasus, pegasus->intr_interval);
1011 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
1012 if (netif_msg_ifup(pegasus))
1013 pr_debug("%s: failed intr_urb, %d\n", net->name, res);
1014 usb_kill_urb(pegasus->rx_urb);
1015 goto exit;
1016 }
1017 if ((res = enable_net_traffic(net, pegasus->usb))) {
1018 if (netif_msg_ifup(pegasus))
1019 pr_debug("%s: can't enable_net_traffic() - %d\n",
1020 net->name, res);
1021 res = -EIO;
1022 usb_kill_urb(pegasus->rx_urb);
1023 usb_kill_urb(pegasus->intr_urb);
1024 free_skb_pool(pegasus);
1025 goto exit;
1026 }
1027 set_carrier(net);
1028 netif_start_queue(net);
1029 if (netif_msg_ifup(pegasus))
1030 pr_debug("%s: open\n", net->name);
1031 res = 0;
1032exit:
1033 return res;
1034}
1035
1036static int pegasus_close(struct net_device *net)
1037{
1038 pegasus_t *pegasus = netdev_priv(net);
1039
1040 netif_stop_queue(net);
1041 if (!(pegasus->flags & PEGASUS_UNPLUG))
1042 disable_net_traffic(pegasus);
1043 tasklet_kill(&pegasus->rx_tl);
1044 unlink_all_urbs(pegasus);
1045
1046 return 0;
1047}
1048
1049static void pegasus_get_drvinfo(struct net_device *dev,
1050 struct ethtool_drvinfo *info)
1051{
1052 pegasus_t *pegasus = netdev_priv(dev);
1053 strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1054 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1055 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1056}
1057
1058/* also handles three patterns of some kind in hardware */
1059#define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
1060
1061static void
1062pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1063{
1064 pegasus_t *pegasus = netdev_priv(dev);
1065
1066 wol->supported = WAKE_MAGIC | WAKE_PHY;
1067 wol->wolopts = pegasus->wolopts;
1068}
1069
1070static int
1071pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1072{
1073 pegasus_t *pegasus = netdev_priv(dev);
1074 u8 reg78 = 0x04;
1075
1076 if (wol->wolopts & ~WOL_SUPPORTED)
1077 return -EINVAL;
1078
1079 if (wol->wolopts & WAKE_MAGIC)
1080 reg78 |= 0x80;
1081 if (wol->wolopts & WAKE_PHY)
1082 reg78 |= 0x40;
1083 /* FIXME this 0x10 bit still needs to get set in the chip... */
1084 if (wol->wolopts)
1085 pegasus->eth_regs[0] |= 0x10;
1086 else
1087 pegasus->eth_regs[0] &= ~0x10;
1088 pegasus->wolopts = wol->wolopts;
1089 return set_register(pegasus, WakeupControl, reg78);
1090}
1091
1092static inline void pegasus_reset_wol(struct net_device *dev)
1093{
1094 struct ethtool_wolinfo wol;
1095
1096 memset(&wol, 0, sizeof wol);
1097 (void) pegasus_set_wol(dev, &wol);
1098}
1099
1100static int
1101pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1102{
1103 pegasus_t *pegasus;
1104
1105 if (in_atomic())
1106 return 0;
1107
1108 pegasus = netdev_priv(dev);
1109 mii_ethtool_gset(&pegasus->mii, ecmd);
1110
1111 return 0;
1112}
1113
1114static int
1115pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1116{
1117 pegasus_t *pegasus = netdev_priv(dev);
1118 return mii_ethtool_sset(&pegasus->mii, ecmd);
1119}
1120
1121static int pegasus_nway_reset(struct net_device *dev)
1122{
1123 pegasus_t *pegasus = netdev_priv(dev);
1124 return mii_nway_restart(&pegasus->mii);
1125}
1126
1127static u32 pegasus_get_link(struct net_device *dev)
1128{
1129 pegasus_t *pegasus = netdev_priv(dev);
1130 return mii_link_ok(&pegasus->mii);
1131}
1132
1133static u32 pegasus_get_msglevel(struct net_device *dev)
1134{
1135 pegasus_t *pegasus = netdev_priv(dev);
1136 return pegasus->msg_enable;
1137}
1138
1139static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1140{
1141 pegasus_t *pegasus = netdev_priv(dev);
1142 pegasus->msg_enable = v;
1143}
1144
1145static struct ethtool_ops ops = {
1146 .get_drvinfo = pegasus_get_drvinfo,
1147 .get_settings = pegasus_get_settings,
1148 .set_settings = pegasus_set_settings,
1149 .nway_reset = pegasus_nway_reset,
1150 .get_link = pegasus_get_link,
1151 .get_msglevel = pegasus_get_msglevel,
1152 .set_msglevel = pegasus_set_msglevel,
1153 .get_wol = pegasus_get_wol,
1154 .set_wol = pegasus_set_wol,
1155};
1156
1157static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1158{
1159 __u16 *data = (__u16 *) & rq->ifr_ifru;
1160 pegasus_t *pegasus = netdev_priv(net);
1161 int res;
1162
1163 switch (cmd) {
1164 case SIOCDEVPRIVATE:
1165 data[0] = pegasus->phy;
1166 case SIOCDEVPRIVATE + 1:
1167 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1168 res = 0;
1169 break;
1170 case SIOCDEVPRIVATE + 2:
1171 if (!capable(CAP_NET_ADMIN))
1172 return -EPERM;
1173 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1174 res = 0;
1175 break;
1176 default:
1177 res = -EOPNOTSUPP;
1178 }
1179 return res;
1180}
1181
1182static void pegasus_set_multicast(struct net_device *net)
1183{
1184 pegasus_t *pegasus = netdev_priv(net);
1185
1186 if (net->flags & IFF_PROMISC) {
1187 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1188 if (netif_msg_link(pegasus))
1189 pr_info("%s: Promiscuous mode enabled.\n", net->name);
ae0a97bf 1190 } else if (net->mc_count ||
1da177e4
LT		 1191 (net->flags & IFF_ALLMULTI)) {
1192 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1193 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1194 if (netif_msg_link(pegasus))
1195 pr_info("%s: set allmulti\n", net->name);
1196 } else {
1197 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1198 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1199 }
1200
1201 pegasus->flags |= ETH_REGS_CHANGE;
1202 ctrl_callback(pegasus->ctrl_urb, NULL);
1203}
1204
1205static __u8 mii_phy_probe(pegasus_t * pegasus)
1206{
1207 int i;
1208 __u16 tmp;
1209
1210 for (i = 0; i < 32; i++) {
1211 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1212 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1213 continue;
1214 else
1215 return i;
1216 }
1217
1218 return 0xff;
1219}
1220
1221static inline void setup_pegasus_II(pegasus_t * pegasus)
1222{
1223 __u8 data = 0xa5;
1da177e4 1224
4a1728a2
PM		 1225 set_register(pegasus, Reg1d, 0);
1226 set_register(pegasus, Reg7b, 1);
1da177e4
LT		 1227 mdelay(100);
1228 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
4a1728a2 1229 set_register(pegasus, Reg7b, 0);
1da177e4 1230 else
4a1728a2 1231 set_register(pegasus, Reg7b, 2);
1da177e4 1232
4a1728a2
PM		 1233 set_register(pegasus, 0x83, data);
1234 get_registers(pegasus, 0x83, 1, &data);
1da177e4
LT		 1235
1236 if (data == 0xa5) {
1237 pegasus->chip = 0x8513;
1238 } else {
1239 pegasus->chip = 0;
1240 }
1241
4a1728a2
PM		 1242 set_register(pegasus, 0x80, 0xc0);
1243 set_register(pegasus, 0x83, 0xff);
1244 set_register(pegasus, 0x84, 0x01);
1da177e4
LT		 1245
1246 if (pegasus->features & HAS_HOME_PNA && mii_mode)
4a1728a2 1247 set_register(pegasus, Reg81, 6);
1da177e4 1248 else
4a1728a2 1249 set_register(pegasus, Reg81, 2);
1da177e4
LT		 1250}
1251
1252
1253static struct workqueue_struct *pegasus_workqueue = NULL;
1254#define CARRIER_CHECK_DELAY (2 * HZ)
1255
1256static void check_carrier(void *data)
1257{
1258 pegasus_t *pegasus = data;
1259 set_carrier(pegasus->net);
1260 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1261 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1262 CARRIER_CHECK_DELAY);
1263 }
1264}
1265
1266static int pegasus_probe(struct usb_interface *intf,
1267 const struct usb_device_id *id)
1268{
1269 struct usb_device *dev = interface_to_usbdev(intf);
1270 struct net_device *net;
1271 pegasus_t *pegasus;
1272 int dev_index = id - pegasus_ids;
1273 int res = -ENOMEM;
1274
1275 usb_get_dev(dev);
1276 net = alloc_etherdev(sizeof(struct pegasus));
1277 if (!net) {
1278 dev_err(&intf->dev, "can't allocate %s\n", "device");
1279 goto out;
1280 }
1281
1282 pegasus = netdev_priv(net);
1283 memset(pegasus, 0, sizeof (struct pegasus));
1284 pegasus->dev_index = dev_index;
1285 init_waitqueue_head(&pegasus->ctrl_wait);
1286
1287 if (!alloc_urbs(pegasus)) {
1288 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1289 goto out1;
1290 }
1291
1292 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1293
1294 INIT_WORK(&pegasus->carrier_check, check_carrier, pegasus);
1295
1296 pegasus->intf = intf;
1297 pegasus->usb = dev;
1298 pegasus->net = net;
1299 SET_MODULE_OWNER(net);
1300 net->open = pegasus_open;
1301 net->stop = pegasus_close;
1302 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1303 net->tx_timeout = pegasus_tx_timeout;
1304 net->do_ioctl = pegasus_ioctl;
1305 net->hard_start_xmit = pegasus_start_xmit;
1306 net->set_multicast_list = pegasus_set_multicast;
1307 net->get_stats = pegasus_netdev_stats;
1308 SET_ETHTOOL_OPS(net, &ops);
1309 pegasus->mii.dev = net;
1310 pegasus->mii.mdio_read = mdio_read;
1311 pegasus->mii.mdio_write = mdio_write;
1312 pegasus->mii.phy_id_mask = 0x1f;
1313 pegasus->mii.reg_num_mask = 0x1f;
1314 spin_lock_init(&pegasus->rx_pool_lock);
1315 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1316 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1317
1318 pegasus->features = usb_dev_id[dev_index].private;
1319 get_interrupt_interval(pegasus);
1320 if (reset_mac(pegasus)) {
1321 dev_err(&intf->dev, "can't reset MAC\n");
1322 res = -EIO;
1323 goto out2;
1324 }
1325 set_ethernet_addr(pegasus);
1326 fill_skb_pool(pegasus);
1327 if (pegasus->features & PEGASUS_II) {
1328 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1329 setup_pegasus_II(pegasus);
1330 }
1331 pegasus->phy = mii_phy_probe(pegasus);
1332 if (pegasus->phy == 0xff) {
1333 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1334 pegasus->phy = 1;
1335 }
1336 pegasus->mii.phy_id = pegasus->phy;
1337 usb_set_intfdata(intf, pegasus);
1338 SET_NETDEV_DEV(net, &intf->dev);
1339 pegasus_reset_wol(net);
1340 res = register_netdev(net);
1341 if (res)
1342 goto out3;
1343 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1344 CARRIER_CHECK_DELAY);
1345
1346 dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n",
1347 net->name,
1348 usb_dev_id[dev_index].name,
1349 net->dev_addr [0], net->dev_addr [1],
1350 net->dev_addr [2], net->dev_addr [3],
1351 net->dev_addr [4], net->dev_addr [5]);
1352 return 0;
1353
1354out3:
1355 usb_set_intfdata(intf, NULL);
1356 free_skb_pool(pegasus);
1357out2:
1358 free_all_urbs(pegasus);
1359out1:
1360 free_netdev(net);
1361out:
1362 usb_put_dev(dev);
1363 return res;
1364}
1365
1366static void pegasus_disconnect(struct usb_interface *intf)
1367{
1368 struct pegasus *pegasus = usb_get_intfdata(intf);
1369
1370 usb_set_intfdata(intf, NULL);
1371 if (!pegasus) {
1372 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1373 return;
1374 }
1375
1376 pegasus->flags |= PEGASUS_UNPLUG;
1377 cancel_delayed_work(&pegasus->carrier_check);
1378 unregister_netdev(pegasus->net);
1379 usb_put_dev(interface_to_usbdev(intf));
a85a46f2 1380 unlink_all_urbs(pegasus);
1da177e4
LT		 1381 free_all_urbs(pegasus);
1382 free_skb_pool(pegasus);
1383 if (pegasus->rx_skb)
1384 dev_kfree_skb(pegasus->rx_skb);
1385 free_netdev(pegasus->net);
1386}
1387
27d72e85 1388static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1da177e4
LT		 1389{
1390 struct pegasus *pegasus = usb_get_intfdata(intf);
1391
1392 netif_device_detach (pegasus->net);
7e713b82 1393 cancel_delayed_work(&pegasus->carrier_check);
27d72e85 1394 if (netif_running(pegasus->net)) {
27d72e85
DB		 1395 usb_kill_urb(pegasus->rx_urb);
1396 usb_kill_urb(pegasus->intr_urb);
1397 }
1da177e4
LT		 1398 return 0;
1399}
1400
1401static int pegasus_resume (struct usb_interface *intf)
1402{
1403 struct pegasus *pegasus = usb_get_intfdata(intf);
1404
1405 netif_device_attach (pegasus->net);
27d72e85
DB		 1406 if (netif_running(pegasus->net)) {
1407 pegasus->rx_urb->status = 0;
1408 pegasus->rx_urb->actual_length = 0;
9727d04a 1409 read_bulk_callback(pegasus->rx_urb, NULL);
27d72e85
DB		 1410
1411 pegasus->intr_urb->status = 0;
1412 pegasus->intr_urb->actual_length = 0;
9727d04a 1413 intr_callback(pegasus->intr_urb, NULL);
27d72e85 1414 }
7e713b82
DB		 1415 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1416 CARRIER_CHECK_DELAY);
1da177e4
LT		 1417 return 0;
1418}
1419
1420static struct usb_driver pegasus_driver = {
1421 .name = driver_name,
1422 .probe = pegasus_probe,
1423 .disconnect = pegasus_disconnect,
1424 .id_table = pegasus_ids,
1425 .suspend = pegasus_suspend,
1426 .resume = pegasus_resume,
1427};
1428
a4f81a61
Y		 1429static void parse_id(char *id)
1430{
1431 unsigned int vendor_id=0, device_id=0, flags=0, i=0;
1432 char *token, *name=NULL;
1433
1434 if ((token = strsep(&id, ":")) != NULL)
1435 name = token;
1436 /* name now points to a null terminated string*/
1437 if ((token = strsep(&id, ":")) != NULL)
1438 vendor_id = simple_strtoul(token, NULL, 16);
1439 if ((token = strsep(&id, ":")) != NULL)
1440 device_id = simple_strtoul(token, NULL, 16);
1441 flags = simple_strtoul(id, NULL, 16);
1442 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1443 driver_name, name, vendor_id, device_id, flags);
1444
1445 if (vendor_id > 0x10000 || vendor_id == 0)
1446 return;
1447 if (device_id > 0x10000 || device_id == 0)
1448 return;
1449
1450 for (i=0; usb_dev_id[i].name; i++);
1451 usb_dev_id[i].name = name;
1452 usb_dev_id[i].vendor = vendor_id;
1453 usb_dev_id[i].device = device_id;
1454 usb_dev_id[i].private = flags;
1455 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1456 pegasus_ids[i].idVendor = vendor_id;
1457 pegasus_ids[i].idProduct = device_id;
1458}
1459
1da177e4
LT		 1460static int __init pegasus_init(void)
1461{
1462 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
a4f81a61
Y		 1463 if (devid)
1464 parse_id(devid);
1da177e4
LT		 1465 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1466 if (!pegasus_workqueue)
1467 return -ENOMEM;
1468 return usb_register(&pegasus_driver);
1469}
1470
1471static void __exit pegasus_exit(void)
1472{
1473 destroy_workqueue(pegasus_workqueue);
1474 usb_deregister(&pegasus_driver);
1475}
1476
1477module_init(pegasus_init);
1478module_exit(pegasus_exit);
Linux kernel - Deliverables
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