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af_iucv: Return -EAGAIN if iucv msg limit is exceeded
[linux-2.6-block.git] / drivers / net / usb / 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 */
37cf3477 48#define DRIVER_VERSION "v0.6.14 (2006/09/27)"
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);
8cb89571 96static const struct net_device_ops pegasus_netdev_ops;
1da177e4
LT		 97
98static int update_eth_regs_async(pegasus_t *);
99/* Aargh!!! I _really_ hate such tweaks */
7d12e780 100static void ctrl_callback(struct urb *urb)
1da177e4
LT		 101{
102 pegasus_t *pegasus = urb->context;
c94cb314 103 int status = urb->status;
1da177e4
LT		 104
105 if (!pegasus)
106 return;
107
c94cb314 108 switch (status) {
1da177e4
LT		 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:
e000ea13 122 if (netif_msg_drv(pegasus) && printk_ratelimit())
4a1728a2 123 dev_dbg(&pegasus->intf->dev, "%s, status %d\n",
c94cb314 124 __func__, status);
1da177e4
LT		 125 }
126 pegasus->flags &= ~ETH_REGS_CHANGED;
127 wake_up(&pegasus->ctrl_wait);
128}
129
130static 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",
b39d66a8 141 __func__);
1da177e4
LT		 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);
da2bbdcc
HH		 154 pegasus->dr.wIndex = cpu_to_le16(indx);
155 pegasus->dr.wLength = cpu_to_le16(size);
1da177e4
LT		 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))) {
10c8211c 168 set_current_state(TASK_RUNNING);
955a2608
DB		 169 if (ret == -ENODEV)
170 netif_device_detach(pegasus->net);
e000ea13 171 if (netif_msg_drv(pegasus) && printk_ratelimit())
1da177e4 172 dev_err(&pegasus->intf->dev, "%s, status %d\n",
653c0316 173 __func__, ret);
1da177e4
LT		 174 goto out;
175 }
176
177 schedule();
178out:
179 remove_wait_queue(&pegasus->ctrl_wait, &wait);
180 memcpy(data, buffer, size);
181 kfree(buffer);
182
183 return ret;
184}
185
186static 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",
653c0316 197 __func__);
1da177e4
LT		 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);
da2bbdcc
HH		 212 pegasus->dr.wIndex = cpu_to_le16(indx);
213 pegasus->dr.wLength = cpu_to_le16(size);
1da177e4
LT		 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))) {
955a2608
DB		 225 if (ret == -ENODEV)
226 netif_device_detach(pegasus->net);
1da177e4
LT		 227 if (netif_msg_drv(pegasus))
228 dev_err(&pegasus->intf->dev, "%s, status %d\n",
b39d66a8 229 __func__, ret);
1da177e4
LT		 230 goto out;
231 }
232
233 schedule();
234out:
235 remove_wait_queue(&pegasus->ctrl_wait, &wait);
236 kfree(buffer);
237
238 return ret;
239}
240
241static 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",
b39d66a8 251 __func__);
1da177e4
LT		 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);
da2bbdcc 265 pegasus->dr.wIndex = cpu_to_le16(indx);
1da177e4
LT		 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,
016534cf 272 tmp, 1, ctrl_callback, pegasus);
1da177e4
LT		 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))) {
955a2608
DB		 278 if (ret == -ENODEV)
279 netif_device_detach(pegasus->net);
e000ea13 280 if (netif_msg_drv(pegasus) && printk_ratelimit())
1da177e4 281 dev_err(&pegasus->intf->dev, "%s, status %d\n",
b39d66a8 282 __func__, ret);
1da177e4
LT		 283 goto out;
284 }
285
286 schedule();
287out:
288 remove_wait_queue(&pegasus->ctrl_wait, &wait);
289 kfree(tmp);
290
291 return ret;
292}
293
294static 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 = 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
955a2608
DB		 310 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
311 if (ret == -ENODEV)
312 netif_device_detach(pegasus->net);
1da177e4
LT		 313 if (netif_msg_drv(pegasus))
314 dev_err(&pegasus->intf->dev, "%s, status %d\n",
b39d66a8 315 __func__, ret);
955a2608 316 }
1da177e4
LT		 317
318 return ret;
319}
320
c43c49bd 321/* Returns 0 on success, error on failure */
1da177e4
LT		 322static 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
4a1728a2
PM		 329 set_register(pegasus, PhyCtrl, 0);
330 set_registers(pegasus, PhyAddr, sizeof (data), data);
331 set_register(pegasus, PhyCtrl, (indx | PHY_READ));
1da177e4
LT		 332 for (i = 0; i < REG_TIMEOUT; i++) {
333 ret = get_registers(pegasus, PhyCtrl, 1, data);
7e713b82
DB		 334 if (ret == -ESHUTDOWN)
335 goto fail;
1da177e4
LT		 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);
4a1728a2 342 return ret;
1da177e4 343 }
7e713b82 344fail:
1da177e4 345 if (netif_msg_drv(pegasus))
b39d66a8 346 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__);
1da177e4 347
4a1728a2 348 return ret;
1da177e4
LT		 349}
350
351static 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
360static 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);
4a1728a2
PM		 368 set_register(pegasus, PhyCtrl, 0);
369 set_registers(pegasus, PhyAddr, sizeof(data), data);
370 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
1da177e4
LT		 371 for (i = 0; i < REG_TIMEOUT; i++) {
372 ret = get_registers(pegasus, PhyCtrl, 1, data);
7e713b82
DB		 373 if (ret == -ESHUTDOWN)
374 goto fail;
1da177e4
LT		 375 if (data[0] & PHY_DONE)
376 break;
377 }
378 if (i < REG_TIMEOUT)
4a1728a2 379 return ret;
1da177e4 380
7e713b82 381fail:
1da177e4 382 if (netif_msg_drv(pegasus))
b39d66a8 383 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__);
4a1728a2 384 return -ETIMEDOUT;
1da177e4
LT		 385}
386
387static 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
394static 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
4a1728a2
PM		 401 set_register(pegasus, EpromCtrl, 0);
402 set_register(pegasus, EpromOffset, index);
403 set_register(pegasus, EpromCtrl, EPROM_READ);
1da177e4
LT		 404
405 for (i = 0; i < REG_TIMEOUT; i++) {
406 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
407 if (tmp & EPROM_DONE)
408 break;
7e713b82
DB		 409 if (ret == -ESHUTDOWN)
410 goto fail;
1da177e4
LT		 411 }
412 if (i < REG_TIMEOUT) {
413 ret = get_registers(pegasus, EpromData, 2, &retdatai);
414 *retdata = le16_to_cpu(retdatai);
4a1728a2 415 return ret;
1da177e4
LT		 416 }
417
7e713b82 418fail:
1da177e4 419 if (netif_msg_drv(pegasus))
b39d66a8 420 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__);
4a1728a2 421 return -ETIMEDOUT;
1da177e4
LT		 422}
423
424#ifdef PEGASUS_WRITE_EEPROM
425static inline void enable_eprom_write(pegasus_t * pegasus)
426{
427 __u8 tmp;
428 int ret;
429
4a1728a2
PM		 430 get_registers(pegasus, EthCtrl2, 1, &tmp);
431 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
1da177e4
LT		 432}
433
434static inline void disable_eprom_write(pegasus_t * pegasus)
435{
436 __u8 tmp;
437 int ret;
438
4a1728a2
PM		 439 get_registers(pegasus, EthCtrl2, 1, &tmp);
440 set_register(pegasus, EpromCtrl, 0);
441 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
1da177e4
LT		 442}
443
444static 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
4a1728a2 450 set_registers(pegasus, EpromOffset, 4, d);
1da177e4 451 enable_eprom_write(pegasus);
4a1728a2
PM		 452 set_register(pegasus, EpromOffset, index);
453 set_registers(pegasus, EpromData, 2, &data);
454 set_register(pegasus, EpromCtrl, EPROM_WRITE);
1da177e4
LT		 455
456 for (i = 0; i < REG_TIMEOUT; i++) {
457 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
7e713b82
DB		 458 if (ret == -ESHUTDOWN)
459 goto fail;
1da177e4
LT		 460 if (tmp & EPROM_DONE)
461 break;
462 }
463 disable_eprom_write(pegasus);
464 if (i < REG_TIMEOUT)
4a1728a2 465 return ret;
7e713b82 466fail:
1da177e4 467 if (netif_msg_drv(pegasus))
b39d66a8 468 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__);
4a1728a2 469 return -ETIMEDOUT;
1da177e4
LT		 470}
471#endif /* PEGASUS_WRITE_EEPROM */
472
473static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
474{
475 int i;
476 __u16 w16;
477
478 for (i = 0; i < 3; i++) {
479 read_eprom_word(pegasus, i, &w16);
da2bbdcc 480 ((__le16 *) id)[i] = cpu_to_le16(w16);
1da177e4
LT		 481 }
482}
483
484static void set_ethernet_addr(pegasus_t * pegasus)
485{
486 __u8 node_id[6];
1da177e4 487
37cf3477
PM		 488 if (pegasus->features & PEGASUS_II) {
489 get_registers(pegasus, 0x10, sizeof(node_id), node_id);
490 } else {
491 get_node_id(pegasus, node_id);
492 set_registers(pegasus, EthID, sizeof (node_id), node_id);
493 }
1da177e4
LT		 494 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
495}
496
497static inline int reset_mac(pegasus_t * pegasus)
498{
499 __u8 data = 0x8;
500 int i;
1da177e4 501
4a1728a2 502 set_register(pegasus, EthCtrl1, data);
1da177e4 503 for (i = 0; i < REG_TIMEOUT; i++) {
4a1728a2 504 get_registers(pegasus, EthCtrl1, 1, &data);
1da177e4
LT		 505 if (~data & 0x08) {
506 if (loopback & 1)
507 break;
508 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
4a1728a2 509 set_register(pegasus, Gpio1, 0x34);
1da177e4 510 else
4a1728a2
PM		 511 set_register(pegasus, Gpio1, 0x26);
512 set_register(pegasus, Gpio0, pegasus->features);
513 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
1da177e4
LT		 514 break;
515 }
516 }
517 if (i == REG_TIMEOUT)
4a1728a2 518 return -ETIMEDOUT;
1da177e4
LT		 519
520 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
521 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
4a1728a2
PM		 522 set_register(pegasus, Gpio0, 0x24);
523 set_register(pegasus, Gpio0, 0x26);
1da177e4
LT		 524 }
525 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
526 __u16 auxmode;
527 read_mii_word(pegasus, 3, 0x1b, &auxmode);
528 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
529 }
530
531 return 0;
532}
533
534static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
535{
536 __u16 linkpart;
537 __u8 data[4];
538 pegasus_t *pegasus = netdev_priv(dev);
539 int ret;
540
541 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
542 data[0] = 0xc9;
543 data[1] = 0;
544 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
545 data[1] |= 0x20; /* set full duplex */
546 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
547 data[1] |= 0x10; /* set 100 Mbps */
548 if (mii_mode)
549 data[1] = 0;
550 data[2] = (loopback & 1) ? 0x09 : 0x01;
551
552 memcpy(pegasus->eth_regs, data, sizeof (data));
553 ret = set_registers(pegasus, EthCtrl0, 3, data);
554
555 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
efafe6fb 556 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
1da177e4
LT		 557 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
558 u16 auxmode;
559 read_mii_word(pegasus, 0, 0x1b, &auxmode);
560 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
561 }
562
4a1728a2 563 return ret;
1da177e4
LT		 564}
565
566static void fill_skb_pool(pegasus_t * pegasus)
567{
568 int i;
569
570 for (i = 0; i < RX_SKBS; i++) {
571 if (pegasus->rx_pool[i])
572 continue;
573 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
574 /*
575 ** we give up if the allocation fail. the tasklet will be
576 ** rescheduled again anyway...
577 */
578 if (pegasus->rx_pool[i] == NULL)
579 return;
1da177e4
LT		 580 skb_reserve(pegasus->rx_pool[i], 2);
581 }
582}
583
584static void free_skb_pool(pegasus_t * pegasus)
585{
586 int i;
587
588 for (i = 0; i < RX_SKBS; i++) {
589 if (pegasus->rx_pool[i]) {
590 dev_kfree_skb(pegasus->rx_pool[i]);
591 pegasus->rx_pool[i] = NULL;
592 }
593 }
594}
595
596static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
597{
598 int i;
599 struct sk_buff *skb;
600
601 for (i = 0; i < RX_SKBS; i++) {
602 if (likely(pegasus->rx_pool[i] != NULL)) {
603 skb = pegasus->rx_pool[i];
604 pegasus->rx_pool[i] = NULL;
605 return skb;
606 }
607 }
608 return NULL;
609}
610
7d12e780 611static void read_bulk_callback(struct urb *urb)
1da177e4
LT		 612{
613 pegasus_t *pegasus = urb->context;
614 struct net_device *net;
615 int rx_status, count = urb->actual_length;
c94cb314 616 int status = urb->status;
1da177e4
LT		 617 u8 *buf = urb->transfer_buffer;
618 __u16 pkt_len;
619
620 if (!pegasus)
621 return;
622
623 net = pegasus->net;
624 if (!netif_device_present(net) || !netif_running(net))
625 return;
626
c94cb314 627 switch (status) {
1da177e4
LT		 628 case 0:
629 break;
38e2bfc9 630 case -ETIME:
1da177e4
LT		 631 if (netif_msg_rx_err(pegasus))
632 pr_debug("%s: reset MAC\n", net->name);
633 pegasus->flags &= ~PEGASUS_RX_BUSY;
634 break;
635 case -EPIPE: /* stall, or disconnect from TT */
636 /* FIXME schedule work to clear the halt */
637 if (netif_msg_rx_err(pegasus))
638 printk(KERN_WARNING "%s: no rx stall recovery\n",
639 net->name);
640 return;
641 case -ENOENT:
642 case -ECONNRESET:
643 case -ESHUTDOWN:
644 if (netif_msg_ifdown(pegasus))
c94cb314 645 pr_debug("%s: rx unlink, %d\n", net->name, status);
1da177e4
LT		 646 return;
647 default:
648 if (netif_msg_rx_err(pegasus))
c94cb314 649 pr_debug("%s: RX status %d\n", net->name, status);
1da177e4
LT		 650 goto goon;
651 }
652
653 if (!count || count < 4)
654 goto goon;
655
656 rx_status = buf[count - 2];
657 if (rx_status & 0x1e) {
658 if (netif_msg_rx_err(pegasus))
659 pr_debug("%s: RX packet error %x\n",
660 net->name, rx_status);
661 pegasus->stats.rx_errors++;
662 if (rx_status & 0x06) // long or runt
663 pegasus->stats.rx_length_errors++;
664 if (rx_status & 0x08)
665 pegasus->stats.rx_crc_errors++;
666 if (rx_status & 0x10) // extra bits
667 pegasus->stats.rx_frame_errors++;
668 goto goon;
669 }
670 if (pegasus->chip == 0x8513) {
671 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
672 pkt_len &= 0x0fff;
673 pegasus->rx_skb->data += 2;
674 } else {
675 pkt_len = buf[count - 3] << 8;
676 pkt_len += buf[count - 4];
677 pkt_len &= 0xfff;
678 pkt_len -= 8;
679 }
680
a85a46f2
KV		 681 /*
682 * If the packet is unreasonably long, quietly drop it rather than
683 * kernel panicing by calling skb_put.
684 */
685 if (pkt_len > PEGASUS_MTU)
686 goto goon;
687
1da177e4
LT		 688 /*
689 * at this point we are sure pegasus->rx_skb != NULL
690 * so we go ahead and pass up the packet.
691 */
692 skb_put(pegasus->rx_skb, pkt_len);
693 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
694 netif_rx(pegasus->rx_skb);
695 pegasus->stats.rx_packets++;
696 pegasus->stats.rx_bytes += pkt_len;
697
698 if (pegasus->flags & PEGASUS_UNPLUG)
699 return;
700
701 spin_lock(&pegasus->rx_pool_lock);
702 pegasus->rx_skb = pull_skb(pegasus);
703 spin_unlock(&pegasus->rx_pool_lock);
704
705 if (pegasus->rx_skb == NULL)
706 goto tl_sched;
707goon:
708 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
709 usb_rcvbulkpipe(pegasus->usb, 1),
710 pegasus->rx_skb->data, PEGASUS_MTU + 8,
711 read_bulk_callback, pegasus);
955a2608
DB		 712 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
713 if (rx_status == -ENODEV)
714 netif_device_detach(pegasus->net);
715 else if (rx_status) {
1da177e4
LT		 716 pegasus->flags |= PEGASUS_RX_URB_FAIL;
717 goto tl_sched;
718 } else {
719 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
720 }
721
722 return;
723
724tl_sched:
725 tasklet_schedule(&pegasus->rx_tl);
726}
727
728static void rx_fixup(unsigned long data)
729{
730 pegasus_t *pegasus;
731 unsigned long flags;
955a2608 732 int status;
1da177e4
LT		 733
734 pegasus = (pegasus_t *) data;
735 if (pegasus->flags & PEGASUS_UNPLUG)
736 return;
737
738 spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
739 fill_skb_pool(pegasus);
740 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
741 if (pegasus->rx_skb)
742 goto try_again;
743 if (pegasus->rx_skb == NULL) {
744 pegasus->rx_skb = pull_skb(pegasus);
745 }
746 if (pegasus->rx_skb == NULL) {
747 if (netif_msg_rx_err(pegasus))
748 printk(KERN_WARNING "%s: low on memory\n",
749 pegasus->net->name);
750 tasklet_schedule(&pegasus->rx_tl);
751 goto done;
752 }
753 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
754 usb_rcvbulkpipe(pegasus->usb, 1),
755 pegasus->rx_skb->data, PEGASUS_MTU + 8,
756 read_bulk_callback, pegasus);
757try_again:
955a2608
DB		 758 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
759 if (status == -ENODEV)
760 netif_device_detach(pegasus->net);
761 else if (status) {
1da177e4
LT		 762 pegasus->flags |= PEGASUS_RX_URB_FAIL;
763 tasklet_schedule(&pegasus->rx_tl);
764 } else {
765 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
766 }
767done:
768 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
769}
770
7d12e780 771static void write_bulk_callback(struct urb *urb)
1da177e4
LT		 772{
773 pegasus_t *pegasus = urb->context;
9351982b 774 struct net_device *net;
c94cb314 775 int status = urb->status;
1da177e4
LT		 776
777 if (!pegasus)
778 return;
779
9351982b
MG		 780 net = pegasus->net;
781
1da177e4
LT		 782 if (!netif_device_present(net) || !netif_running(net))
783 return;
784
c94cb314 785 switch (status) {
1da177e4
LT		 786 case -EPIPE:
787 /* FIXME schedule_work() to clear the tx halt */
788 netif_stop_queue(net);
789 if (netif_msg_tx_err(pegasus))
790 printk(KERN_WARNING "%s: no tx stall recovery\n",
791 net->name);
792 return;
793 case -ENOENT:
794 case -ECONNRESET:
795 case -ESHUTDOWN:
796 if (netif_msg_ifdown(pegasus))
c94cb314 797 pr_debug("%s: tx unlink, %d\n", net->name, status);
1da177e4
LT		 798 return;
799 default:
800 if (netif_msg_tx_err(pegasus))
c94cb314 801 pr_info("%s: TX status %d\n", net->name, status);
1da177e4
LT		 802 /* FALL THROUGH */
803 case 0:
804 break;
805 }
806
807 net->trans_start = jiffies;
808 netif_wake_queue(net);
809}
810
7d12e780 811static void intr_callback(struct urb *urb)
1da177e4
LT		 812{
813 pegasus_t *pegasus = urb->context;
814 struct net_device *net;
c94cb314 815 int res, status = urb->status;
1da177e4
LT		 816
817 if (!pegasus)
818 return;
819 net = pegasus->net;
820
c94cb314 821 switch (status) {
1da177e4
LT		 822 case 0:
823 break;
824 case -ECONNRESET: /* unlink */
825 case -ENOENT:
826 case -ESHUTDOWN:
827 return;
828 default:
829 /* some Pegasus-I products report LOTS of data
830 * toggle errors... avoid log spamming
831 */
832 if (netif_msg_timer(pegasus))
833 pr_debug("%s: intr status %d\n", net->name,
c94cb314 834 status);
1da177e4
LT		 835 }
836
837 if (urb->actual_length >= 6) {
838 u8 * d = urb->transfer_buffer;
839
840 /* byte 0 == tx_status1, reg 2B */
841 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
842 |LATE_COL|JABBER_TIMEOUT)) {
843 pegasus->stats.tx_errors++;
844 if (d[0] & TX_UNDERRUN)
845 pegasus->stats.tx_fifo_errors++;
846 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
847 pegasus->stats.tx_aborted_errors++;
848 if (d[0] & LATE_COL)
849 pegasus->stats.tx_window_errors++;
850 }
851
852 /* d[5].LINK_STATUS lies on some adapters.
853 * d[0].NO_CARRIER kicks in only with failed TX.
854 * ... so monitoring with MII may be safest.
855 */
1da177e4
LT		 856
857 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
858 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
859 }
860
c94cb314
ON		 861 res = usb_submit_urb(urb, GFP_ATOMIC);
862 if (res == -ENODEV)
955a2608 863 netif_device_detach(pegasus->net);
c94cb314 864 if (res && netif_msg_timer(pegasus))
1da177e4 865 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
c94cb314 866 net->name, res);
1da177e4
LT		 867}
868
869static void pegasus_tx_timeout(struct net_device *net)
870{
871 pegasus_t *pegasus = netdev_priv(net);
872 if (netif_msg_timer(pegasus))
873 printk(KERN_WARNING "%s: tx timeout\n", net->name);
1da177e4
LT		 874 usb_unlink_urb(pegasus->tx_urb);
875 pegasus->stats.tx_errors++;
876}
877
878static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
879{
880 pegasus_t *pegasus = netdev_priv(net);
881 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
882 int res;
883 __u16 l16 = skb->len;
884
885 netif_stop_queue(net);
886
887 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
d626f62b 888 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
1da177e4
LT		 889 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
890 usb_sndbulkpipe(pegasus->usb, 2),
891 pegasus->tx_buff, count,
892 write_bulk_callback, pegasus);
893 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
894 if (netif_msg_tx_err(pegasus))
895 printk(KERN_WARNING "%s: fail tx, %d\n",
896 net->name, res);
897 switch (res) {
898 case -EPIPE: /* stall, or disconnect from TT */
899 /* cleanup should already have been scheduled */
900 break;
901 case -ENODEV: /* disconnect() upcoming */
9dd014eb 902 case -EPERM:
955a2608 903 netif_device_detach(pegasus->net);
1da177e4
LT		 904 break;
905 default:
906 pegasus->stats.tx_errors++;
907 netif_start_queue(net);
908 }
909 } else {
910 pegasus->stats.tx_packets++;
911 pegasus->stats.tx_bytes += skb->len;
912 net->trans_start = jiffies;
913 }
914 dev_kfree_skb(skb);
915
916 return 0;
917}
918
919static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
920{
921 return &((pegasus_t *) netdev_priv(dev))->stats;
922}
923
924static inline void disable_net_traffic(pegasus_t * pegasus)
925{
926 int tmp = 0;
1da177e4 927
4a1728a2 928 set_registers(pegasus, EthCtrl0, 2, &tmp);
1da177e4
LT		 929}
930
931static inline void get_interrupt_interval(pegasus_t * pegasus)
932{
933 __u8 data[2];
934
935 read_eprom_word(pegasus, 4, (__u16 *) data);
a85a46f2
KV		 936 if (pegasus->usb->speed != USB_SPEED_HIGH) {
937 if (data[1] < 0x80) {
938 if (netif_msg_timer(pegasus))
939 dev_info(&pegasus->intf->dev, "intr interval "
940 "changed from %ums to %ums\n",
941 data[1], 0x80);
942 data[1] = 0x80;
943#ifdef PEGASUS_WRITE_EEPROM
944 write_eprom_word(pegasus, 4, *(__u16 *) data);
1da177e4 945#endif
a85a46f2 946 }
1da177e4
LT		 947 }
948 pegasus->intr_interval = data[1];
949}
950
951static void set_carrier(struct net_device *net)
952{
953 pegasus_t *pegasus = netdev_priv(net);
954 u16 tmp;
955
c43c49bd 956 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
1da177e4 957 return;
a85a46f2 958
1da177e4
LT		 959 if (tmp & BMSR_LSTATUS)
960 netif_carrier_on(net);
961 else
962 netif_carrier_off(net);
963}
964
965static void free_all_urbs(pegasus_t * pegasus)
966{
967 usb_free_urb(pegasus->intr_urb);
968 usb_free_urb(pegasus->tx_urb);
969 usb_free_urb(pegasus->rx_urb);
970 usb_free_urb(pegasus->ctrl_urb);
971}
972
973static void unlink_all_urbs(pegasus_t * pegasus)
974{
975 usb_kill_urb(pegasus->intr_urb);
976 usb_kill_urb(pegasus->tx_urb);
977 usb_kill_urb(pegasus->rx_urb);
978 usb_kill_urb(pegasus->ctrl_urb);
979}
980
981static int alloc_urbs(pegasus_t * pegasus)
982{
983 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
984 if (!pegasus->ctrl_urb) {
985 return 0;
986 }
987 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
988 if (!pegasus->rx_urb) {
989 usb_free_urb(pegasus->ctrl_urb);
990 return 0;
991 }
992 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
993 if (!pegasus->tx_urb) {
994 usb_free_urb(pegasus->rx_urb);
995 usb_free_urb(pegasus->ctrl_urb);
996 return 0;
997 }
998 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
999 if (!pegasus->intr_urb) {
1000 usb_free_urb(pegasus->tx_urb);
1001 usb_free_urb(pegasus->rx_urb);
1002 usb_free_urb(pegasus->ctrl_urb);
1003 return 0;
1004 }
1005
1006 return 1;
1007}
1008
1009static int pegasus_open(struct net_device *net)
1010{
1011 pegasus_t *pegasus = netdev_priv(net);
1012 int res;
1013
1014 if (pegasus->rx_skb == NULL)
1015 pegasus->rx_skb = pull_skb(pegasus);
1016 /*
1017 ** Note: no point to free the pool. it is empty :-)
1018 */
1019 if (!pegasus->rx_skb)
1020 return -ENOMEM;
1021
1022 res = set_registers(pegasus, EthID, 6, net->dev_addr);
1023
1024 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
1025 usb_rcvbulkpipe(pegasus->usb, 1),
1026 pegasus->rx_skb->data, PEGASUS_MTU + 8,
1027 read_bulk_callback, pegasus);
1028 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
955a2608
DB		 1029 if (res == -ENODEV)
1030 netif_device_detach(pegasus->net);
1da177e4
LT		 1031 if (netif_msg_ifup(pegasus))
1032 pr_debug("%s: failed rx_urb, %d", net->name, res);
1033 goto exit;
1034 }
1035
1036 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
1037 usb_rcvintpipe(pegasus->usb, 3),
1038 pegasus->intr_buff, sizeof (pegasus->intr_buff),
1039 intr_callback, pegasus, pegasus->intr_interval);
1040 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
955a2608
DB		 1041 if (res == -ENODEV)
1042 netif_device_detach(pegasus->net);
1da177e4
LT		 1043 if (netif_msg_ifup(pegasus))
1044 pr_debug("%s: failed intr_urb, %d\n", net->name, res);
1045 usb_kill_urb(pegasus->rx_urb);
1046 goto exit;
1047 }
1048 if ((res = enable_net_traffic(net, pegasus->usb))) {
1049 if (netif_msg_ifup(pegasus))
1050 pr_debug("%s: can't enable_net_traffic() - %d\n",
1051 net->name, res);
1052 res = -EIO;
1053 usb_kill_urb(pegasus->rx_urb);
1054 usb_kill_urb(pegasus->intr_urb);
1055 free_skb_pool(pegasus);
1056 goto exit;
1057 }
1058 set_carrier(net);
1059 netif_start_queue(net);
1060 if (netif_msg_ifup(pegasus))
1061 pr_debug("%s: open\n", net->name);
1062 res = 0;
1063exit:
1064 return res;
1065}
1066
1067static int pegasus_close(struct net_device *net)
1068{
1069 pegasus_t *pegasus = netdev_priv(net);
1070
1071 netif_stop_queue(net);
1072 if (!(pegasus->flags & PEGASUS_UNPLUG))
1073 disable_net_traffic(pegasus);
1074 tasklet_kill(&pegasus->rx_tl);
1075 unlink_all_urbs(pegasus);
1076
1077 return 0;
1078}
1079
1080static void pegasus_get_drvinfo(struct net_device *dev,
1081 struct ethtool_drvinfo *info)
1082{
1083 pegasus_t *pegasus = netdev_priv(dev);
1084 strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1085 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1086 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1087}
1088
1089/* also handles three patterns of some kind in hardware */
1090#define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
1091
1092static void
1093pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1094{
1095 pegasus_t *pegasus = netdev_priv(dev);
1096
1097 wol->supported = WAKE_MAGIC | WAKE_PHY;
1098 wol->wolopts = pegasus->wolopts;
1099}
1100
1101static int
1102pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1103{
1104 pegasus_t *pegasus = netdev_priv(dev);
1105 u8 reg78 = 0x04;
1106
1107 if (wol->wolopts & ~WOL_SUPPORTED)
1108 return -EINVAL;
1109
1110 if (wol->wolopts & WAKE_MAGIC)
1111 reg78 |= 0x80;
1112 if (wol->wolopts & WAKE_PHY)
1113 reg78 |= 0x40;
1114 /* FIXME this 0x10 bit still needs to get set in the chip... */
1115 if (wol->wolopts)
1116 pegasus->eth_regs[0] |= 0x10;
1117 else
1118 pegasus->eth_regs[0] &= ~0x10;
1119 pegasus->wolopts = wol->wolopts;
1120 return set_register(pegasus, WakeupControl, reg78);
1121}
1122
1123static inline void pegasus_reset_wol(struct net_device *dev)
1124{
1125 struct ethtool_wolinfo wol;
1126
1127 memset(&wol, 0, sizeof wol);
1128 (void) pegasus_set_wol(dev, &wol);
1129}
1130
1131static int
1132pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1133{
1134 pegasus_t *pegasus;
1135
1da177e4
LT		 1136 pegasus = netdev_priv(dev);
1137 mii_ethtool_gset(&pegasus->mii, ecmd);
1da177e4
LT		 1138 return 0;
1139}
1140
1141static int
1142pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1143{
1144 pegasus_t *pegasus = netdev_priv(dev);
1145 return mii_ethtool_sset(&pegasus->mii, ecmd);
1146}
1147
1148static int pegasus_nway_reset(struct net_device *dev)
1149{
1150 pegasus_t *pegasus = netdev_priv(dev);
1151 return mii_nway_restart(&pegasus->mii);
1152}
1153
1154static u32 pegasus_get_link(struct net_device *dev)
1155{
1156 pegasus_t *pegasus = netdev_priv(dev);
1157 return mii_link_ok(&pegasus->mii);
1158}
1159
1160static u32 pegasus_get_msglevel(struct net_device *dev)
1161{
1162 pegasus_t *pegasus = netdev_priv(dev);
1163 return pegasus->msg_enable;
1164}
1165
1166static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1167{
1168 pegasus_t *pegasus = netdev_priv(dev);
1169 pegasus->msg_enable = v;
1170}
1171
1172static struct ethtool_ops ops = {
1173 .get_drvinfo = pegasus_get_drvinfo,
1174 .get_settings = pegasus_get_settings,
1175 .set_settings = pegasus_set_settings,
1176 .nway_reset = pegasus_nway_reset,
1177 .get_link = pegasus_get_link,
1178 .get_msglevel = pegasus_get_msglevel,
1179 .set_msglevel = pegasus_set_msglevel,
1180 .get_wol = pegasus_get_wol,
1181 .set_wol = pegasus_set_wol,
1182};
1183
1184static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1185{
1186 __u16 *data = (__u16 *) & rq->ifr_ifru;
1187 pegasus_t *pegasus = netdev_priv(net);
1188 int res;
1189
1190 switch (cmd) {
1191 case SIOCDEVPRIVATE:
1192 data[0] = pegasus->phy;
1193 case SIOCDEVPRIVATE + 1:
1194 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1195 res = 0;
1196 break;
1197 case SIOCDEVPRIVATE + 2:
1198 if (!capable(CAP_NET_ADMIN))
1199 return -EPERM;
1200 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1201 res = 0;
1202 break;
1203 default:
1204 res = -EOPNOTSUPP;
1205 }
1206 return res;
1207}
1208
1209static void pegasus_set_multicast(struct net_device *net)
1210{
1211 pegasus_t *pegasus = netdev_priv(net);
1212
1213 if (net->flags & IFF_PROMISC) {
1214 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1215 if (netif_msg_link(pegasus))
1216 pr_info("%s: Promiscuous mode enabled.\n", net->name);
e000ea13 1217 } else if (net->mc_count || (net->flags & IFF_ALLMULTI)) {
1da177e4
LT		 1218 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1219 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1220 if (netif_msg_link(pegasus))
cda2836d 1221 pr_debug("%s: set allmulti\n", net->name);
1da177e4
LT		 1222 } else {
1223 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1224 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1225 }
1226
e000ea13
DB		 1227 pegasus->ctrl_urb->status = 0;
1228
1da177e4 1229 pegasus->flags |= ETH_REGS_CHANGE;
7d12e780 1230 ctrl_callback(pegasus->ctrl_urb);
1da177e4
LT		 1231}
1232
1233static __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
1249static inline void setup_pegasus_II(pegasus_t * pegasus)
1250{
1251 __u8 data = 0xa5;
1da177e4 1252
4a1728a2
PM		 1253 set_register(pegasus, Reg1d, 0);
1254 set_register(pegasus, Reg7b, 1);
1da177e4
LT		 1255 mdelay(100);
1256 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
4a1728a2 1257 set_register(pegasus, Reg7b, 0);
1da177e4 1258 else
4a1728a2 1259 set_register(pegasus, Reg7b, 2);
1da177e4 1260
4a1728a2
PM		 1261 set_register(pegasus, 0x83, data);
1262 get_registers(pegasus, 0x83, 1, &data);
1da177e4
LT		 1263
1264 if (data == 0xa5) {
1265 pegasus->chip = 0x8513;
1266 } else {
1267 pegasus->chip = 0;
1268 }
1269
4a1728a2
PM		 1270 set_register(pegasus, 0x80, 0xc0);
1271 set_register(pegasus, 0x83, 0xff);
1272 set_register(pegasus, 0x84, 0x01);
1da177e4
LT		 1273
1274 if (pegasus->features & HAS_HOME_PNA && mii_mode)
4a1728a2 1275 set_register(pegasus, Reg81, 6);
1da177e4 1276 else
4a1728a2 1277 set_register(pegasus, Reg81, 2);
1da177e4
LT		 1278}
1279
1280
cda2836d 1281static int pegasus_count;
1da177e4
LT		 1282static struct workqueue_struct *pegasus_workqueue = NULL;
1283#define CARRIER_CHECK_DELAY (2 * HZ)
1284
c4028958 1285static void check_carrier(struct work_struct *work)
1da177e4 1286{
c4028958 1287 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1da177e4
LT		 1288 set_carrier(pegasus->net);
1289 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1290 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1291 CARRIER_CHECK_DELAY);
1292 }
1293}
1294
4f63135e
BC		 1295static int pegasus_blacklisted(struct usb_device *udev)
1296{
1297 struct usb_device_descriptor *udd = &udev->descriptor;
1298
1299 /* Special quirk to keep the driver from handling the Belkin Bluetooth
1300 * dongle which happens to have the same ID.
1301 */
1302 if ((udd->idVendor == VENDOR_BELKIN && udd->idProduct == 0x0121) &&
1303 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
1304 (udd->bDeviceProtocol == 1))
1305 return 1;
1306
1307 return 0;
1308}
1309
cda2836d
DB		 1310/* we rely on probe() and remove() being serialized so we
1311 * don't need extra locking on pegasus_count.
1312 */
1313static void pegasus_dec_workqueue(void)
1314{
1315 pegasus_count--;
1316 if (pegasus_count == 0) {
1317 destroy_workqueue(pegasus_workqueue);
1318 pegasus_workqueue = NULL;
1319 }
1320}
1321
1da177e4
LT		 1322static int pegasus_probe(struct usb_interface *intf,
1323 const struct usb_device_id *id)
1324{
1325 struct usb_device *dev = interface_to_usbdev(intf);
1326 struct net_device *net;
1327 pegasus_t *pegasus;
1328 int dev_index = id - pegasus_ids;
1329 int res = -ENOMEM;
1330
cda2836d
DB		 1331 if (pegasus_blacklisted(dev))
1332 return -ENODEV;
4f63135e 1333
cda2836d
DB		 1334 if (pegasus_count == 0) {
1335 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1336 if (!pegasus_workqueue)
1337 return -ENOMEM;
4f63135e 1338 }
cda2836d
DB		 1339 pegasus_count++;
1340
1341 usb_get_dev(dev);
4f63135e 1342
1da177e4
LT		 1343 net = alloc_etherdev(sizeof(struct pegasus));
1344 if (!net) {
1345 dev_err(&intf->dev, "can't allocate %s\n", "device");
1346 goto out;
1347 }
1348
1349 pegasus = netdev_priv(net);
1da177e4
LT		 1350 pegasus->dev_index = dev_index;
1351 init_waitqueue_head(&pegasus->ctrl_wait);
1352
1353 if (!alloc_urbs(pegasus)) {
1354 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1355 goto out1;
1356 }
1357
1358 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1359
c4028958 1360 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1da177e4
LT		 1361
1362 pegasus->intf = intf;
1363 pegasus->usb = dev;
1364 pegasus->net = net;
8cb89571
ON		 1365
1366
1da177e4 1367 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
8cb89571 1368 net->netdev_ops = &pegasus_netdev_ops;
1da177e4
LT		 1369 SET_ETHTOOL_OPS(net, &ops);
1370 pegasus->mii.dev = net;
1371 pegasus->mii.mdio_read = mdio_read;
1372 pegasus->mii.mdio_write = mdio_write;
1373 pegasus->mii.phy_id_mask = 0x1f;
1374 pegasus->mii.reg_num_mask = 0x1f;
1375 spin_lock_init(&pegasus->rx_pool_lock);
1376 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1377 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1378
1379 pegasus->features = usb_dev_id[dev_index].private;
1380 get_interrupt_interval(pegasus);
1381 if (reset_mac(pegasus)) {
1382 dev_err(&intf->dev, "can't reset MAC\n");
1383 res = -EIO;
1384 goto out2;
1385 }
1386 set_ethernet_addr(pegasus);
1387 fill_skb_pool(pegasus);
1388 if (pegasus->features & PEGASUS_II) {
1389 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1390 setup_pegasus_II(pegasus);
1391 }
1392 pegasus->phy = mii_phy_probe(pegasus);
1393 if (pegasus->phy == 0xff) {
1394 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1395 pegasus->phy = 1;
1396 }
1397 pegasus->mii.phy_id = pegasus->phy;
1398 usb_set_intfdata(intf, pegasus);
1399 SET_NETDEV_DEV(net, &intf->dev);
1400 pegasus_reset_wol(net);
1401 res = register_netdev(net);
1402 if (res)
1403 goto out3;
1404 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1405 CARRIER_CHECK_DELAY);
1406
e174961c 1407 dev_info(&intf->dev, "%s, %s, %pM\n",
0795af57
JP		 1408 net->name,
1409 usb_dev_id[dev_index].name,
e174961c 1410 net->dev_addr);
1da177e4
LT		 1411 return 0;
1412
1413out3:
1414 usb_set_intfdata(intf, NULL);
1415 free_skb_pool(pegasus);
1416out2:
1417 free_all_urbs(pegasus);
1418out1:
1419 free_netdev(net);
1420out:
1421 usb_put_dev(dev);
cda2836d 1422 pegasus_dec_workqueue();
1da177e4
LT		 1423 return res;
1424}
1425
1426static void pegasus_disconnect(struct usb_interface *intf)
1427{
1428 struct pegasus *pegasus = usb_get_intfdata(intf);
1429
1430 usb_set_intfdata(intf, NULL);
1431 if (!pegasus) {
1432 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1433 return;
1434 }
1435
1436 pegasus->flags |= PEGASUS_UNPLUG;
1437 cancel_delayed_work(&pegasus->carrier_check);
1438 unregister_netdev(pegasus->net);
1439 usb_put_dev(interface_to_usbdev(intf));
a85a46f2 1440 unlink_all_urbs(pegasus);
1da177e4
LT		 1441 free_all_urbs(pegasus);
1442 free_skb_pool(pegasus);
4c13eb66 1443 if (pegasus->rx_skb != NULL) {
1da177e4 1444 dev_kfree_skb(pegasus->rx_skb);
4c13eb66
ACM		 1445 pegasus->rx_skb = NULL;
1446 }
1da177e4 1447 free_netdev(pegasus->net);
cda2836d 1448 pegasus_dec_workqueue();
1da177e4
LT		 1449}
1450
27d72e85 1451static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1da177e4
LT		 1452{
1453 struct pegasus *pegasus = usb_get_intfdata(intf);
1454
1455 netif_device_detach (pegasus->net);
7e713b82 1456 cancel_delayed_work(&pegasus->carrier_check);
27d72e85 1457 if (netif_running(pegasus->net)) {
27d72e85
DB		 1458 usb_kill_urb(pegasus->rx_urb);
1459 usb_kill_urb(pegasus->intr_urb);
1460 }
1da177e4
LT		 1461 return 0;
1462}
1463
1464static int pegasus_resume (struct usb_interface *intf)
1465{
1466 struct pegasus *pegasus = usb_get_intfdata(intf);
1467
1468 netif_device_attach (pegasus->net);
27d72e85
DB		 1469 if (netif_running(pegasus->net)) {
1470 pegasus->rx_urb->status = 0;
1471 pegasus->rx_urb->actual_length = 0;
7d12e780 1472 read_bulk_callback(pegasus->rx_urb);
27d72e85
DB		 1473
1474 pegasus->intr_urb->status = 0;
1475 pegasus->intr_urb->actual_length = 0;
7d12e780 1476 intr_callback(pegasus->intr_urb);
27d72e85 1477 }
7e713b82
DB		 1478 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1479 CARRIER_CHECK_DELAY);
1da177e4
LT		 1480 return 0;
1481}
1482
8cb89571
ON		 1483static const struct net_device_ops pegasus_netdev_ops = {
1484 .ndo_open = pegasus_open,
1485 .ndo_stop = pegasus_close,
1486 .ndo_do_ioctl = pegasus_ioctl,
1487 .ndo_start_xmit = pegasus_start_xmit,
1488 .ndo_set_multicast_list = pegasus_set_multicast,
1489 .ndo_get_stats = pegasus_netdev_stats,
1490 .ndo_tx_timeout = pegasus_tx_timeout,
1491};
1492
1da177e4
LT		 1493static struct usb_driver pegasus_driver = {
1494 .name = driver_name,
1495 .probe = pegasus_probe,
1496 .disconnect = pegasus_disconnect,
1497 .id_table = pegasus_ids,
1498 .suspend = pegasus_suspend,
1499 .resume = pegasus_resume,
1500};
1501
cda2836d 1502static void __init parse_id(char *id)
a4f81a61
Y		 1503{
1504 unsigned int vendor_id=0, device_id=0, flags=0, i=0;
1505 char *token, *name=NULL;
1506
1507 if ((token = strsep(&id, ":")) != NULL)
1508 name = token;
1509 /* name now points to a null terminated string*/
1510 if ((token = strsep(&id, ":")) != NULL)
1511 vendor_id = simple_strtoul(token, NULL, 16);
1512 if ((token = strsep(&id, ":")) != NULL)
1513 device_id = simple_strtoul(token, NULL, 16);
1514 flags = simple_strtoul(id, NULL, 16);
1515 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1516 driver_name, name, vendor_id, device_id, flags);
1517
1518 if (vendor_id > 0x10000 || vendor_id == 0)
1519 return;
1520 if (device_id > 0x10000 || device_id == 0)
1521 return;
1522
1523 for (i=0; usb_dev_id[i].name; i++);
1524 usb_dev_id[i].name = name;
1525 usb_dev_id[i].vendor = vendor_id;
1526 usb_dev_id[i].device = device_id;
1527 usb_dev_id[i].private = flags;
1528 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1529 pegasus_ids[i].idVendor = vendor_id;
1530 pegasus_ids[i].idProduct = device_id;
1531}
1532
1da177e4
LT		 1533static int __init pegasus_init(void)
1534{
1535 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
a4f81a61
Y		 1536 if (devid)
1537 parse_id(devid);
1da177e4
LT		 1538 return usb_register(&pegasus_driver);
1539}
1540
1541static void __exit pegasus_exit(void)
1542{
1da177e4
LT		 1543 usb_deregister(&pegasus_driver);
1544}
1545
1546module_init(pegasus_init);
1547module_exit(pegasus_exit);
Linux 6.x block layer and io_uring tree(s)