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[BLUETOOTH]: Introduce skb->data accessor methods for hci_{acl,event,sco}_hdr
[linux-2.6-block.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 */
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);
96
97static int update_eth_regs_async(pegasus_t *);
98/* Aargh!!! I _really_ hate such tweaks */
7d12e780 99static void ctrl_callback(struct urb *urb)
1da177e4
LT		 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))) {
10c8211c 166 set_current_state(TASK_RUNNING);
955a2608
DB		 167 if (ret == -ENODEV)
168 netif_device_detach(pegasus->net);
1da177e4
LT		 169 if (netif_msg_drv(pegasus))
170 dev_err(&pegasus->intf->dev, "%s, status %d\n",
171 __FUNCTION__, ret);
172 goto out;
173 }
174
175 schedule();
176out:
177 remove_wait_queue(&pegasus->ctrl_wait, &wait);
178 memcpy(data, buffer, size);
179 kfree(buffer);
180
181 return ret;
182}
183
184static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
185 void *data)
186{
187 int ret;
188 char *buffer;
189 DECLARE_WAITQUEUE(wait, current);
190
191 buffer = kmalloc(size, GFP_KERNEL);
192 if (!buffer) {
193 if (netif_msg_drv(pegasus))
194 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
195 __FUNCTION__);
196 return -ENOMEM;
197 }
198 memcpy(buffer, data, size);
199
200 add_wait_queue(&pegasus->ctrl_wait, &wait);
201 set_current_state(TASK_UNINTERRUPTIBLE);
202 while (pegasus->flags & ETH_REGS_CHANGED)
203 schedule();
204 remove_wait_queue(&pegasus->ctrl_wait, &wait);
205 set_current_state(TASK_RUNNING);
206
207 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
208 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
209 pegasus->dr.wValue = cpu_to_le16(0);
210 pegasus->dr.wIndex = cpu_to_le16p(&indx);
211 pegasus->dr.wLength = cpu_to_le16p(&size);
212 pegasus->ctrl_urb->transfer_buffer_length = size;
213
214 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
215 usb_sndctrlpipe(pegasus->usb, 0),
216 (char *) &pegasus->dr,
217 buffer, size, ctrl_callback, pegasus);
218
219 add_wait_queue(&pegasus->ctrl_wait, &wait);
220 set_current_state(TASK_UNINTERRUPTIBLE);
221
222 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
955a2608
DB		 223 if (ret == -ENODEV)
224 netif_device_detach(pegasus->net);
1da177e4
LT		 225 if (netif_msg_drv(pegasus))
226 dev_err(&pegasus->intf->dev, "%s, status %d\n",
227 __FUNCTION__, ret);
228 goto out;
229 }
230
231 schedule();
232out:
233 remove_wait_queue(&pegasus->ctrl_wait, &wait);
234 kfree(buffer);
235
236 return ret;
237}
238
239static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
240{
241 int ret;
242 char *tmp;
243 DECLARE_WAITQUEUE(wait, current);
244
245 tmp = kmalloc(1, GFP_KERNEL);
246 if (!tmp) {
247 if (netif_msg_drv(pegasus))
248 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
249 __FUNCTION__);
250 return -ENOMEM;
251 }
252 memcpy(tmp, &data, 1);
253 add_wait_queue(&pegasus->ctrl_wait, &wait);
254 set_current_state(TASK_UNINTERRUPTIBLE);
255 while (pegasus->flags & ETH_REGS_CHANGED)
256 schedule();
257 remove_wait_queue(&pegasus->ctrl_wait, &wait);
258 set_current_state(TASK_RUNNING);
259
260 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
261 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
262 pegasus->dr.wValue = cpu_to_le16(data);
263 pegasus->dr.wIndex = cpu_to_le16p(&indx);
264 pegasus->dr.wLength = cpu_to_le16(1);
265 pegasus->ctrl_urb->transfer_buffer_length = 1;
266
267 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
268 usb_sndctrlpipe(pegasus->usb, 0),
269 (char *) &pegasus->dr,
016534cf 270 tmp, 1, ctrl_callback, pegasus);
1da177e4
LT		 271
272 add_wait_queue(&pegasus->ctrl_wait, &wait);
273 set_current_state(TASK_UNINTERRUPTIBLE);
274
275 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
955a2608
DB		 276 if (ret == -ENODEV)
277 netif_device_detach(pegasus->net);
1da177e4
LT		 278 if (netif_msg_drv(pegasus))
279 dev_err(&pegasus->intf->dev, "%s, status %d\n",
280 __FUNCTION__, ret);
281 goto out;
282 }
283
284 schedule();
285out:
286 remove_wait_queue(&pegasus->ctrl_wait, &wait);
287 kfree(tmp);
288
289 return ret;
290}
291
292static int update_eth_regs_async(pegasus_t * pegasus)
293{
294 int ret;
295
296 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
297 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
298 pegasus->dr.wValue = 0;
299 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
300 pegasus->dr.wLength = cpu_to_le16(3);
301 pegasus->ctrl_urb->transfer_buffer_length = 3;
302
303 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
304 usb_sndctrlpipe(pegasus->usb, 0),
305 (char *) &pegasus->dr,
306 pegasus->eth_regs, 3, ctrl_callback, pegasus);
307
955a2608
DB		 308 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
309 if (ret == -ENODEV)
310 netif_device_detach(pegasus->net);
1da177e4
LT		 311 if (netif_msg_drv(pegasus))
312 dev_err(&pegasus->intf->dev, "%s, status %d\n",
313 __FUNCTION__, ret);
955a2608 314 }
1da177e4
LT		 315
316 return ret;
317}
318
c43c49bd 319/* Returns 0 on success, error on failure */
1da177e4
LT		 320static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
321{
322 int i;
323 __u8 data[4] = { phy, 0, 0, indx };
324 __le16 regdi;
325 int ret;
326
4a1728a2
PM		 327 set_register(pegasus, PhyCtrl, 0);
328 set_registers(pegasus, PhyAddr, sizeof (data), data);
329 set_register(pegasus, PhyCtrl, (indx | PHY_READ));
1da177e4
LT		 330 for (i = 0; i < REG_TIMEOUT; i++) {
331 ret = get_registers(pegasus, PhyCtrl, 1, data);
7e713b82
DB		 332 if (ret == -ESHUTDOWN)
333 goto fail;
1da177e4
LT		 334 if (data[0] & PHY_DONE)
335 break;
336 }
337 if (i < REG_TIMEOUT) {
338 ret = get_registers(pegasus, PhyData, 2, &regdi);
339 *regd = le16_to_cpu(regdi);
4a1728a2 340 return ret;
1da177e4 341 }
7e713b82 342fail:
1da177e4 343 if (netif_msg_drv(pegasus))
37cf3477 344 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
1da177e4 345
4a1728a2 346 return ret;
1da177e4
LT		 347}
348
349static int mdio_read(struct net_device *dev, int phy_id, int loc)
350{
351 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
352 u16 res;
353
354 read_mii_word(pegasus, phy_id, loc, &res);
355 return (int)res;
356}
357
358static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
359{
360 int i;
361 __u8 data[4] = { phy, 0, 0, indx };
362 int ret;
363
364 data[1] = (u8) regd;
365 data[2] = (u8) (regd >> 8);
4a1728a2
PM		 366 set_register(pegasus, PhyCtrl, 0);
367 set_registers(pegasus, PhyAddr, sizeof(data), data);
368 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
1da177e4
LT		 369 for (i = 0; i < REG_TIMEOUT; i++) {
370 ret = get_registers(pegasus, PhyCtrl, 1, data);
7e713b82
DB		 371 if (ret == -ESHUTDOWN)
372 goto fail;
1da177e4
LT		 373 if (data[0] & PHY_DONE)
374 break;
375 }
376 if (i < REG_TIMEOUT)
4a1728a2 377 return ret;
1da177e4 378
7e713b82 379fail:
1da177e4 380 if (netif_msg_drv(pegasus))
37cf3477 381 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
4a1728a2 382 return -ETIMEDOUT;
1da177e4
LT		 383}
384
385static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
386{
387 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
388
389 write_mii_word(pegasus, phy_id, loc, val);
390}
391
392static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
393{
394 int i;
395 __u8 tmp;
396 __le16 retdatai;
397 int ret;
398
4a1728a2
PM		 399 set_register(pegasus, EpromCtrl, 0);
400 set_register(pegasus, EpromOffset, index);
401 set_register(pegasus, EpromCtrl, EPROM_READ);
1da177e4
LT		 402
403 for (i = 0; i < REG_TIMEOUT; i++) {
404 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
405 if (tmp & EPROM_DONE)
406 break;
7e713b82
DB		 407 if (ret == -ESHUTDOWN)
408 goto fail;
1da177e4
LT		 409 }
410 if (i < REG_TIMEOUT) {
411 ret = get_registers(pegasus, EpromData, 2, &retdatai);
412 *retdata = le16_to_cpu(retdatai);
4a1728a2 413 return ret;
1da177e4
LT		 414 }
415
7e713b82 416fail:
1da177e4 417 if (netif_msg_drv(pegasus))
37cf3477 418 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
4a1728a2 419 return -ETIMEDOUT;
1da177e4
LT		 420}
421
422#ifdef PEGASUS_WRITE_EEPROM
423static inline void enable_eprom_write(pegasus_t * pegasus)
424{
425 __u8 tmp;
426 int ret;
427
4a1728a2
PM		 428 get_registers(pegasus, EthCtrl2, 1, &tmp);
429 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
1da177e4
LT		 430}
431
432static inline void disable_eprom_write(pegasus_t * pegasus)
433{
434 __u8 tmp;
435 int ret;
436
4a1728a2
PM		 437 get_registers(pegasus, EthCtrl2, 1, &tmp);
438 set_register(pegasus, EpromCtrl, 0);
439 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
1da177e4
LT		 440}
441
442static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
443{
444 int i;
445 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
446 int ret;
447
4a1728a2 448 set_registers(pegasus, EpromOffset, 4, d);
1da177e4 449 enable_eprom_write(pegasus);
4a1728a2
PM		 450 set_register(pegasus, EpromOffset, index);
451 set_registers(pegasus, EpromData, 2, &data);
452 set_register(pegasus, EpromCtrl, EPROM_WRITE);
1da177e4
LT		 453
454 for (i = 0; i < REG_TIMEOUT; i++) {
455 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
7e713b82
DB		 456 if (ret == -ESHUTDOWN)
457 goto fail;
1da177e4
LT		 458 if (tmp & EPROM_DONE)
459 break;
460 }
461 disable_eprom_write(pegasus);
462 if (i < REG_TIMEOUT)
4a1728a2 463 return ret;
7e713b82 464fail:
1da177e4 465 if (netif_msg_drv(pegasus))
37cf3477 466 dev_warn(&pegasus->intf->dev, "%s failed\n", __FUNCTION__);
4a1728a2 467 return -ETIMEDOUT;
1da177e4
LT		 468}
469#endif /* PEGASUS_WRITE_EEPROM */
470
471static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
472{
473 int i;
474 __u16 w16;
475
476 for (i = 0; i < 3; i++) {
477 read_eprom_word(pegasus, i, &w16);
478 ((__le16 *) id)[i] = cpu_to_le16p(&w16);
479 }
480}
481
482static void set_ethernet_addr(pegasus_t * pegasus)
483{
484 __u8 node_id[6];
1da177e4 485
37cf3477
PM		 486 if (pegasus->features & PEGASUS_II) {
487 get_registers(pegasus, 0x10, sizeof(node_id), node_id);
488 } else {
489 get_node_id(pegasus, node_id);
490 set_registers(pegasus, EthID, sizeof (node_id), node_id);
491 }
1da177e4
LT		 492 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
493}
494
495static inline int reset_mac(pegasus_t * pegasus)
496{
497 __u8 data = 0x8;
498 int i;
1da177e4 499
4a1728a2 500 set_register(pegasus, EthCtrl1, data);
1da177e4 501 for (i = 0; i < REG_TIMEOUT; i++) {
4a1728a2 502 get_registers(pegasus, EthCtrl1, 1, &data);
1da177e4
LT		 503 if (~data & 0x08) {
504 if (loopback & 1)
505 break;
506 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
4a1728a2 507 set_register(pegasus, Gpio1, 0x34);
1da177e4 508 else
4a1728a2
PM		 509 set_register(pegasus, Gpio1, 0x26);
510 set_register(pegasus, Gpio0, pegasus->features);
511 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
1da177e4
LT		 512 break;
513 }
514 }
515 if (i == REG_TIMEOUT)
4a1728a2 516 return -ETIMEDOUT;
1da177e4
LT		 517
518 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
519 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
4a1728a2
PM		 520 set_register(pegasus, Gpio0, 0x24);
521 set_register(pegasus, Gpio0, 0x26);
1da177e4
LT		 522 }
523 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
524 __u16 auxmode;
525 read_mii_word(pegasus, 3, 0x1b, &auxmode);
526 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
527 }
528
529 return 0;
530}
531
532static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
533{
534 __u16 linkpart;
535 __u8 data[4];
536 pegasus_t *pegasus = netdev_priv(dev);
537 int ret;
538
539 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
540 data[0] = 0xc9;
541 data[1] = 0;
542 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
543 data[1] |= 0x20; /* set full duplex */
544 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
545 data[1] |= 0x10; /* set 100 Mbps */
546 if (mii_mode)
547 data[1] = 0;
548 data[2] = (loopback & 1) ? 0x09 : 0x01;
549
550 memcpy(pegasus->eth_regs, data, sizeof (data));
551 ret = set_registers(pegasus, EthCtrl0, 3, data);
552
553 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
efafe6fb 554 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
1da177e4
LT		 555 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
556 u16 auxmode;
557 read_mii_word(pegasus, 0, 0x1b, &auxmode);
558 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
559 }
560
4a1728a2 561 return ret;
1da177e4
LT		 562}
563
564static void fill_skb_pool(pegasus_t * pegasus)
565{
566 int i;
567
568 for (i = 0; i < RX_SKBS; i++) {
569 if (pegasus->rx_pool[i])
570 continue;
571 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
572 /*
573 ** we give up if the allocation fail. the tasklet will be
574 ** rescheduled again anyway...
575 */
576 if (pegasus->rx_pool[i] == NULL)
577 return;
1da177e4
LT		 578 skb_reserve(pegasus->rx_pool[i], 2);
579 }
580}
581
582static void free_skb_pool(pegasus_t * pegasus)
583{
584 int i;
585
586 for (i = 0; i < RX_SKBS; i++) {
587 if (pegasus->rx_pool[i]) {
588 dev_kfree_skb(pegasus->rx_pool[i]);
589 pegasus->rx_pool[i] = NULL;
590 }
591 }
592}
593
594static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
595{
596 int i;
597 struct sk_buff *skb;
598
599 for (i = 0; i < RX_SKBS; i++) {
600 if (likely(pegasus->rx_pool[i] != NULL)) {
601 skb = pegasus->rx_pool[i];
602 pegasus->rx_pool[i] = NULL;
603 return skb;
604 }
605 }
606 return NULL;
607}
608
7d12e780 609static void read_bulk_callback(struct urb *urb)
1da177e4
LT		 610{
611 pegasus_t *pegasus = urb->context;
612 struct net_device *net;
613 int rx_status, count = urb->actual_length;
614 u8 *buf = urb->transfer_buffer;
615 __u16 pkt_len;
616
617 if (!pegasus)
618 return;
619
620 net = pegasus->net;
621 if (!netif_device_present(net) || !netif_running(net))
622 return;
623
624 switch (urb->status) {
625 case 0:
626 break;
38e2bfc9 627 case -ETIME:
1da177e4
LT		 628 if (netif_msg_rx_err(pegasus))
629 pr_debug("%s: reset MAC\n", net->name);
630 pegasus->flags &= ~PEGASUS_RX_BUSY;
631 break;
632 case -EPIPE: /* stall, or disconnect from TT */
633 /* FIXME schedule work to clear the halt */
634 if (netif_msg_rx_err(pegasus))
635 printk(KERN_WARNING "%s: no rx stall recovery\n",
636 net->name);
637 return;
638 case -ENOENT:
639 case -ECONNRESET:
640 case -ESHUTDOWN:
641 if (netif_msg_ifdown(pegasus))
642 pr_debug("%s: rx unlink, %d\n", net->name, urb->status);
643 return;
644 default:
645 if (netif_msg_rx_err(pegasus))
646 pr_debug("%s: RX status %d\n", net->name, urb->status);
647 goto goon;
648 }
649
650 if (!count || count < 4)
651 goto goon;
652
653 rx_status = buf[count - 2];
654 if (rx_status & 0x1e) {
655 if (netif_msg_rx_err(pegasus))
656 pr_debug("%s: RX packet error %x\n",
657 net->name, rx_status);
658 pegasus->stats.rx_errors++;
659 if (rx_status & 0x06) // long or runt
660 pegasus->stats.rx_length_errors++;
661 if (rx_status & 0x08)
662 pegasus->stats.rx_crc_errors++;
663 if (rx_status & 0x10) // extra bits
664 pegasus->stats.rx_frame_errors++;
665 goto goon;
666 }
667 if (pegasus->chip == 0x8513) {
668 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
669 pkt_len &= 0x0fff;
670 pegasus->rx_skb->data += 2;
671 } else {
672 pkt_len = buf[count - 3] << 8;
673 pkt_len += buf[count - 4];
674 pkt_len &= 0xfff;
675 pkt_len -= 8;
676 }
677
a85a46f2
KV		 678 /*
679 * If the packet is unreasonably long, quietly drop it rather than
680 * kernel panicing by calling skb_put.
681 */
682 if (pkt_len > PEGASUS_MTU)
683 goto goon;
684
1da177e4
LT		 685 /*
686 * at this point we are sure pegasus->rx_skb != NULL
687 * so we go ahead and pass up the packet.
688 */
689 skb_put(pegasus->rx_skb, pkt_len);
690 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
691 netif_rx(pegasus->rx_skb);
692 pegasus->stats.rx_packets++;
693 pegasus->stats.rx_bytes += pkt_len;
694
695 if (pegasus->flags & PEGASUS_UNPLUG)
696 return;
697
698 spin_lock(&pegasus->rx_pool_lock);
699 pegasus->rx_skb = pull_skb(pegasus);
700 spin_unlock(&pegasus->rx_pool_lock);
701
702 if (pegasus->rx_skb == NULL)
703 goto tl_sched;
704goon:
705 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
706 usb_rcvbulkpipe(pegasus->usb, 1),
707 pegasus->rx_skb->data, PEGASUS_MTU + 8,
708 read_bulk_callback, pegasus);
955a2608
DB		 709 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
710 if (rx_status == -ENODEV)
711 netif_device_detach(pegasus->net);
712 else if (rx_status) {
1da177e4
LT		 713 pegasus->flags |= PEGASUS_RX_URB_FAIL;
714 goto tl_sched;
715 } else {
716 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
717 }
718
719 return;
720
721tl_sched:
722 tasklet_schedule(&pegasus->rx_tl);
723}
724
725static void rx_fixup(unsigned long data)
726{
727 pegasus_t *pegasus;
728 unsigned long flags;
955a2608 729 int status;
1da177e4
LT		 730
731 pegasus = (pegasus_t *) data;
732 if (pegasus->flags & PEGASUS_UNPLUG)
733 return;
734
735 spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
736 fill_skb_pool(pegasus);
737 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
738 if (pegasus->rx_skb)
739 goto try_again;
740 if (pegasus->rx_skb == NULL) {
741 pegasus->rx_skb = pull_skb(pegasus);
742 }
743 if (pegasus->rx_skb == NULL) {
744 if (netif_msg_rx_err(pegasus))
745 printk(KERN_WARNING "%s: low on memory\n",
746 pegasus->net->name);
747 tasklet_schedule(&pegasus->rx_tl);
748 goto done;
749 }
750 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
751 usb_rcvbulkpipe(pegasus->usb, 1),
752 pegasus->rx_skb->data, PEGASUS_MTU + 8,
753 read_bulk_callback, pegasus);
754try_again:
955a2608
DB		 755 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
756 if (status == -ENODEV)
757 netif_device_detach(pegasus->net);
758 else if (status) {
1da177e4
LT		 759 pegasus->flags |= PEGASUS_RX_URB_FAIL;
760 tasklet_schedule(&pegasus->rx_tl);
761 } else {
762 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
763 }
764done:
765 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
766}
767
7d12e780 768static void write_bulk_callback(struct urb *urb)
1da177e4
LT		 769{
770 pegasus_t *pegasus = urb->context;
771 struct net_device *net = pegasus->net;
772
773 if (!pegasus)
774 return;
775
776 if (!netif_device_present(net) || !netif_running(net))
777 return;
778
779 switch (urb->status) {
780 case -EPIPE:
781 /* FIXME schedule_work() to clear the tx halt */
782 netif_stop_queue(net);
783 if (netif_msg_tx_err(pegasus))
784 printk(KERN_WARNING "%s: no tx stall recovery\n",
785 net->name);
786 return;
787 case -ENOENT:
788 case -ECONNRESET:
789 case -ESHUTDOWN:
790 if (netif_msg_ifdown(pegasus))
791 pr_debug("%s: tx unlink, %d\n", net->name, urb->status);
792 return;
793 default:
794 if (netif_msg_tx_err(pegasus))
795 pr_info("%s: TX status %d\n", net->name, urb->status);
796 /* FALL THROUGH */
797 case 0:
798 break;
799 }
800
801 net->trans_start = jiffies;
802 netif_wake_queue(net);
803}
804
7d12e780 805static void intr_callback(struct urb *urb)
1da177e4
LT		 806{
807 pegasus_t *pegasus = urb->context;
808 struct net_device *net;
809 int status;
810
811 if (!pegasus)
812 return;
813 net = pegasus->net;
814
815 switch (urb->status) {
816 case 0:
817 break;
818 case -ECONNRESET: /* unlink */
819 case -ENOENT:
820 case -ESHUTDOWN:
821 return;
822 default:
823 /* some Pegasus-I products report LOTS of data
824 * toggle errors... avoid log spamming
825 */
826 if (netif_msg_timer(pegasus))
827 pr_debug("%s: intr status %d\n", net->name,
828 urb->status);
829 }
830
831 if (urb->actual_length >= 6) {
832 u8 * d = urb->transfer_buffer;
833
834 /* byte 0 == tx_status1, reg 2B */
835 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
836 |LATE_COL|JABBER_TIMEOUT)) {
837 pegasus->stats.tx_errors++;
838 if (d[0] & TX_UNDERRUN)
839 pegasus->stats.tx_fifo_errors++;
840 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
841 pegasus->stats.tx_aborted_errors++;
842 if (d[0] & LATE_COL)
843 pegasus->stats.tx_window_errors++;
844 }
845
846 /* d[5].LINK_STATUS lies on some adapters.
847 * d[0].NO_CARRIER kicks in only with failed TX.
848 * ... so monitoring with MII may be safest.
849 */
c43c49bd
DW		 850 if (pegasus->features & TRUST_LINK_STATUS) {
851 if (d[5] & LINK_STATUS)
852 netif_carrier_on(net);
853 else
854 netif_carrier_off(net);
855 } else {
856 /* Never set carrier _on_ based on ! NO_CARRIER */
857 if (d[0] & NO_CARRIER)
858 netif_carrier_off(net);
859 }
1da177e4
LT		 860
861 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
862 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
863 }
864
54e6ecb2 865 status = usb_submit_urb(urb, GFP_ATOMIC);
955a2608
DB		 866 if (status == -ENODEV)
867 netif_device_detach(pegasus->net);
1da177e4
LT		 868 if (status && netif_msg_timer(pegasus))
869 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
870 net->name, status);
871}
872
873static void pegasus_tx_timeout(struct net_device *net)
874{
875 pegasus_t *pegasus = netdev_priv(net);
876 if (netif_msg_timer(pegasus))
877 printk(KERN_WARNING "%s: tx timeout\n", net->name);
1da177e4
LT		 878 usb_unlink_urb(pegasus->tx_urb);
879 pegasus->stats.tx_errors++;
880}
881
882static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
883{
884 pegasus_t *pegasus = netdev_priv(net);
885 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
886 int res;
887 __u16 l16 = skb->len;
888
889 netif_stop_queue(net);
890
891 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
892 memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
893 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
894 usb_sndbulkpipe(pegasus->usb, 2),
895 pegasus->tx_buff, count,
896 write_bulk_callback, pegasus);
897 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
898 if (netif_msg_tx_err(pegasus))
899 printk(KERN_WARNING "%s: fail tx, %d\n",
900 net->name, res);
901 switch (res) {
902 case -EPIPE: /* stall, or disconnect from TT */
903 /* cleanup should already have been scheduled */
904 break;
905 case -ENODEV: /* disconnect() upcoming */
955a2608 906 netif_device_detach(pegasus->net);
1da177e4
LT		 907 break;
908 default:
909 pegasus->stats.tx_errors++;
910 netif_start_queue(net);
911 }
912 } else {
913 pegasus->stats.tx_packets++;
914 pegasus->stats.tx_bytes += skb->len;
915 net->trans_start = jiffies;
916 }
917 dev_kfree_skb(skb);
918
919 return 0;
920}
921
922static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
923{
924 return &((pegasus_t *) netdev_priv(dev))->stats;
925}
926
927static inline void disable_net_traffic(pegasus_t * pegasus)
928{
929 int tmp = 0;
1da177e4 930
4a1728a2 931 set_registers(pegasus, EthCtrl0, 2, &tmp);
1da177e4
LT		 932}
933
934static inline void get_interrupt_interval(pegasus_t * pegasus)
935{
936 __u8 data[2];
937
938 read_eprom_word(pegasus, 4, (__u16 *) data);
a85a46f2
KV		 939 if (pegasus->usb->speed != USB_SPEED_HIGH) {
940 if (data[1] < 0x80) {
941 if (netif_msg_timer(pegasus))
942 dev_info(&pegasus->intf->dev, "intr interval "
943 "changed from %ums to %ums\n",
944 data[1], 0x80);
945 data[1] = 0x80;
946#ifdef PEGASUS_WRITE_EEPROM
947 write_eprom_word(pegasus, 4, *(__u16 *) data);
1da177e4 948#endif
a85a46f2 949 }
1da177e4
LT		 950 }
951 pegasus->intr_interval = data[1];
952}
953
954static void set_carrier(struct net_device *net)
955{
956 pegasus_t *pegasus = netdev_priv(net);
957 u16 tmp;
958
c43c49bd 959 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
1da177e4 960 return;
a85a46f2 961
1da177e4
LT		 962 if (tmp & BMSR_LSTATUS)
963 netif_carrier_on(net);
964 else
965 netif_carrier_off(net);
966}
967
968static void free_all_urbs(pegasus_t * pegasus)
969{
970 usb_free_urb(pegasus->intr_urb);
971 usb_free_urb(pegasus->tx_urb);
972 usb_free_urb(pegasus->rx_urb);
973 usb_free_urb(pegasus->ctrl_urb);
974}
975
976static void unlink_all_urbs(pegasus_t * pegasus)
977{
978 usb_kill_urb(pegasus->intr_urb);
979 usb_kill_urb(pegasus->tx_urb);
980 usb_kill_urb(pegasus->rx_urb);
981 usb_kill_urb(pegasus->ctrl_urb);
982}
983
984static int alloc_urbs(pegasus_t * pegasus)
985{
986 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
987 if (!pegasus->ctrl_urb) {
988 return 0;
989 }
990 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
991 if (!pegasus->rx_urb) {
992 usb_free_urb(pegasus->ctrl_urb);
993 return 0;
994 }
995 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
996 if (!pegasus->tx_urb) {
997 usb_free_urb(pegasus->rx_urb);
998 usb_free_urb(pegasus->ctrl_urb);
999 return 0;
1000 }
1001 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
1002 if (!pegasus->intr_urb) {
1003 usb_free_urb(pegasus->tx_urb);
1004 usb_free_urb(pegasus->rx_urb);
1005 usb_free_urb(pegasus->ctrl_urb);
1006 return 0;
1007 }
1008
1009 return 1;
1010}
1011
1012static int pegasus_open(struct net_device *net)
1013{
1014 pegasus_t *pegasus = netdev_priv(net);
1015 int res;
1016
1017 if (pegasus->rx_skb == NULL)
1018 pegasus->rx_skb = pull_skb(pegasus);
1019 /*
1020 ** Note: no point to free the pool. it is empty :-)
1021 */
1022 if (!pegasus->rx_skb)
1023 return -ENOMEM;
1024
1025 res = set_registers(pegasus, EthID, 6, net->dev_addr);
1026
1027 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
1028 usb_rcvbulkpipe(pegasus->usb, 1),
1029 pegasus->rx_skb->data, PEGASUS_MTU + 8,
1030 read_bulk_callback, pegasus);
1031 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
955a2608
DB		 1032 if (res == -ENODEV)
1033 netif_device_detach(pegasus->net);
1da177e4
LT		 1034 if (netif_msg_ifup(pegasus))
1035 pr_debug("%s: failed rx_urb, %d", net->name, res);
1036 goto exit;
1037 }
1038
1039 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
1040 usb_rcvintpipe(pegasus->usb, 3),
1041 pegasus->intr_buff, sizeof (pegasus->intr_buff),
1042 intr_callback, pegasus, pegasus->intr_interval);
1043 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
955a2608
DB		 1044 if (res == -ENODEV)
1045 netif_device_detach(pegasus->net);
1da177e4
LT		 1046 if (netif_msg_ifup(pegasus))
1047 pr_debug("%s: failed intr_urb, %d\n", net->name, res);
1048 usb_kill_urb(pegasus->rx_urb);
1049 goto exit;
1050 }
1051 if ((res = enable_net_traffic(net, pegasus->usb))) {
1052 if (netif_msg_ifup(pegasus))
1053 pr_debug("%s: can't enable_net_traffic() - %d\n",
1054 net->name, res);
1055 res = -EIO;
1056 usb_kill_urb(pegasus->rx_urb);
1057 usb_kill_urb(pegasus->intr_urb);
1058 free_skb_pool(pegasus);
1059 goto exit;
1060 }
1061 set_carrier(net);
1062 netif_start_queue(net);
1063 if (netif_msg_ifup(pegasus))
1064 pr_debug("%s: open\n", net->name);
1065 res = 0;
1066exit:
1067 return res;
1068}
1069
1070static int pegasus_close(struct net_device *net)
1071{
1072 pegasus_t *pegasus = netdev_priv(net);
1073
1074 netif_stop_queue(net);
1075 if (!(pegasus->flags & PEGASUS_UNPLUG))
1076 disable_net_traffic(pegasus);
1077 tasklet_kill(&pegasus->rx_tl);
1078 unlink_all_urbs(pegasus);
1079
1080 return 0;
1081}
1082
1083static void pegasus_get_drvinfo(struct net_device *dev,
1084 struct ethtool_drvinfo *info)
1085{
1086 pegasus_t *pegasus = netdev_priv(dev);
1087 strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1088 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1089 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1090}
1091
1092/* also handles three patterns of some kind in hardware */
1093#define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
1094
1095static void
1096pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1097{
1098 pegasus_t *pegasus = netdev_priv(dev);
1099
1100 wol->supported = WAKE_MAGIC | WAKE_PHY;
1101 wol->wolopts = pegasus->wolopts;
1102}
1103
1104static int
1105pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1106{
1107 pegasus_t *pegasus = netdev_priv(dev);
1108 u8 reg78 = 0x04;
1109
1110 if (wol->wolopts & ~WOL_SUPPORTED)
1111 return -EINVAL;
1112
1113 if (wol->wolopts & WAKE_MAGIC)
1114 reg78 |= 0x80;
1115 if (wol->wolopts & WAKE_PHY)
1116 reg78 |= 0x40;
1117 /* FIXME this 0x10 bit still needs to get set in the chip... */
1118 if (wol->wolopts)
1119 pegasus->eth_regs[0] |= 0x10;
1120 else
1121 pegasus->eth_regs[0] &= ~0x10;
1122 pegasus->wolopts = wol->wolopts;
1123 return set_register(pegasus, WakeupControl, reg78);
1124}
1125
1126static inline void pegasus_reset_wol(struct net_device *dev)
1127{
1128 struct ethtool_wolinfo wol;
1129
1130 memset(&wol, 0, sizeof wol);
1131 (void) pegasus_set_wol(dev, &wol);
1132}
1133
1134static int
1135pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1136{
1137 pegasus_t *pegasus;
1138
1139 if (in_atomic())
1140 return 0;
1141
1142 pegasus = netdev_priv(dev);
1143 mii_ethtool_gset(&pegasus->mii, ecmd);
1144
1145 return 0;
1146}
1147
1148static int
1149pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1150{
1151 pegasus_t *pegasus = netdev_priv(dev);
1152 return mii_ethtool_sset(&pegasus->mii, ecmd);
1153}
1154
1155static int pegasus_nway_reset(struct net_device *dev)
1156{
1157 pegasus_t *pegasus = netdev_priv(dev);
1158 return mii_nway_restart(&pegasus->mii);
1159}
1160
1161static u32 pegasus_get_link(struct net_device *dev)
1162{
1163 pegasus_t *pegasus = netdev_priv(dev);
1164 return mii_link_ok(&pegasus->mii);
1165}
1166
1167static u32 pegasus_get_msglevel(struct net_device *dev)
1168{
1169 pegasus_t *pegasus = netdev_priv(dev);
1170 return pegasus->msg_enable;
1171}
1172
1173static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1174{
1175 pegasus_t *pegasus = netdev_priv(dev);
1176 pegasus->msg_enable = v;
1177}
1178
1179static struct ethtool_ops ops = {
1180 .get_drvinfo = pegasus_get_drvinfo,
1181 .get_settings = pegasus_get_settings,
1182 .set_settings = pegasus_set_settings,
1183 .nway_reset = pegasus_nway_reset,
1184 .get_link = pegasus_get_link,
1185 .get_msglevel = pegasus_get_msglevel,
1186 .set_msglevel = pegasus_set_msglevel,
1187 .get_wol = pegasus_get_wol,
1188 .set_wol = pegasus_set_wol,
1189};
1190
1191static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1192{
1193 __u16 *data = (__u16 *) & rq->ifr_ifru;
1194 pegasus_t *pegasus = netdev_priv(net);
1195 int res;
1196
1197 switch (cmd) {
1198 case SIOCDEVPRIVATE:
1199 data[0] = pegasus->phy;
1200 case SIOCDEVPRIVATE + 1:
1201 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1202 res = 0;
1203 break;
1204 case SIOCDEVPRIVATE + 2:
1205 if (!capable(CAP_NET_ADMIN))
1206 return -EPERM;
1207 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1208 res = 0;
1209 break;
1210 default:
1211 res = -EOPNOTSUPP;
1212 }
1213 return res;
1214}
1215
1216static void pegasus_set_multicast(struct net_device *net)
1217{
1218 pegasus_t *pegasus = netdev_priv(net);
1219
1220 if (net->flags & IFF_PROMISC) {
1221 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1222 if (netif_msg_link(pegasus))
1223 pr_info("%s: Promiscuous mode enabled.\n", net->name);
ae0a97bf 1224 } else if (net->mc_count ||
1da177e4
LT		 1225 (net->flags & IFF_ALLMULTI)) {
1226 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1227 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1228 if (netif_msg_link(pegasus))
1229 pr_info("%s: set allmulti\n", net->name);
1230 } else {
1231 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1232 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1233 }
1234
1235 pegasus->flags |= ETH_REGS_CHANGE;
7d12e780 1236 ctrl_callback(pegasus->ctrl_urb);
1da177e4
LT		 1237}
1238
1239static __u8 mii_phy_probe(pegasus_t * pegasus)
1240{
1241 int i;
1242 __u16 tmp;
1243
1244 for (i = 0; i < 32; i++) {
1245 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1246 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1247 continue;
1248 else
1249 return i;
1250 }
1251
1252 return 0xff;
1253}
1254
1255static inline void setup_pegasus_II(pegasus_t * pegasus)
1256{
1257 __u8 data = 0xa5;
1da177e4 1258
4a1728a2
PM		 1259 set_register(pegasus, Reg1d, 0);
1260 set_register(pegasus, Reg7b, 1);
1da177e4
LT		 1261 mdelay(100);
1262 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
4a1728a2 1263 set_register(pegasus, Reg7b, 0);
1da177e4 1264 else
4a1728a2 1265 set_register(pegasus, Reg7b, 2);
1da177e4 1266
4a1728a2
PM		 1267 set_register(pegasus, 0x83, data);
1268 get_registers(pegasus, 0x83, 1, &data);
1da177e4
LT		 1269
1270 if (data == 0xa5) {
1271 pegasus->chip = 0x8513;
1272 } else {
1273 pegasus->chip = 0;
1274 }
1275
4a1728a2
PM		 1276 set_register(pegasus, 0x80, 0xc0);
1277 set_register(pegasus, 0x83, 0xff);
1278 set_register(pegasus, 0x84, 0x01);
1da177e4
LT		 1279
1280 if (pegasus->features & HAS_HOME_PNA && mii_mode)
4a1728a2 1281 set_register(pegasus, Reg81, 6);
1da177e4 1282 else
4a1728a2 1283 set_register(pegasus, Reg81, 2);
1da177e4
LT		 1284}
1285
1286
1287static struct workqueue_struct *pegasus_workqueue = NULL;
1288#define CARRIER_CHECK_DELAY (2 * HZ)
1289
c4028958 1290static void check_carrier(struct work_struct *work)
1da177e4 1291{
c4028958 1292 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1da177e4
LT		 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
1300static int pegasus_probe(struct usb_interface *intf,
1301 const struct usb_device_id *id)
1302{
1303 struct usb_device *dev = interface_to_usbdev(intf);
1304 struct net_device *net;
1305 pegasus_t *pegasus;
1306 int dev_index = id - pegasus_ids;
1307 int res = -ENOMEM;
1308
1309 usb_get_dev(dev);
1310 net = alloc_etherdev(sizeof(struct pegasus));
1311 if (!net) {
1312 dev_err(&intf->dev, "can't allocate %s\n", "device");
1313 goto out;
1314 }
1315
1316 pegasus = netdev_priv(net);
1317 memset(pegasus, 0, sizeof (struct pegasus));
1318 pegasus->dev_index = dev_index;
1319 init_waitqueue_head(&pegasus->ctrl_wait);
1320
1321 if (!alloc_urbs(pegasus)) {
1322 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1323 goto out1;
1324 }
1325
1326 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1327
c4028958 1328 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1da177e4
LT		 1329
1330 pegasus->intf = intf;
1331 pegasus->usb = dev;
1332 pegasus->net = net;
1333 SET_MODULE_OWNER(net);
1334 net->open = pegasus_open;
1335 net->stop = pegasus_close;
1336 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1337 net->tx_timeout = pegasus_tx_timeout;
1338 net->do_ioctl = pegasus_ioctl;
1339 net->hard_start_xmit = pegasus_start_xmit;
1340 net->set_multicast_list = pegasus_set_multicast;
1341 net->get_stats = pegasus_netdev_stats;
1342 SET_ETHTOOL_OPS(net, &ops);
1343 pegasus->mii.dev = net;
1344 pegasus->mii.mdio_read = mdio_read;
1345 pegasus->mii.mdio_write = mdio_write;
1346 pegasus->mii.phy_id_mask = 0x1f;
1347 pegasus->mii.reg_num_mask = 0x1f;
1348 spin_lock_init(&pegasus->rx_pool_lock);
1349 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1350 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1351
1352 pegasus->features = usb_dev_id[dev_index].private;
1353 get_interrupt_interval(pegasus);
1354 if (reset_mac(pegasus)) {
1355 dev_err(&intf->dev, "can't reset MAC\n");
1356 res = -EIO;
1357 goto out2;
1358 }
1359 set_ethernet_addr(pegasus);
1360 fill_skb_pool(pegasus);
1361 if (pegasus->features & PEGASUS_II) {
1362 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1363 setup_pegasus_II(pegasus);
1364 }
1365 pegasus->phy = mii_phy_probe(pegasus);
1366 if (pegasus->phy == 0xff) {
1367 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1368 pegasus->phy = 1;
1369 }
1370 pegasus->mii.phy_id = pegasus->phy;
1371 usb_set_intfdata(intf, pegasus);
1372 SET_NETDEV_DEV(net, &intf->dev);
1373 pegasus_reset_wol(net);
1374 res = register_netdev(net);
1375 if (res)
1376 goto out3;
1377 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1378 CARRIER_CHECK_DELAY);
1379
1380 dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n",
1381 net->name,
1382 usb_dev_id[dev_index].name,
1383 net->dev_addr [0], net->dev_addr [1],
1384 net->dev_addr [2], net->dev_addr [3],
1385 net->dev_addr [4], net->dev_addr [5]);
1386 return 0;
1387
1388out3:
1389 usb_set_intfdata(intf, NULL);
1390 free_skb_pool(pegasus);
1391out2:
1392 free_all_urbs(pegasus);
1393out1:
1394 free_netdev(net);
1395out:
1396 usb_put_dev(dev);
1397 return res;
1398}
1399
1400static void pegasus_disconnect(struct usb_interface *intf)
1401{
1402 struct pegasus *pegasus = usb_get_intfdata(intf);
1403
1404 usb_set_intfdata(intf, NULL);
1405 if (!pegasus) {
1406 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1407 return;
1408 }
1409
1410 pegasus->flags |= PEGASUS_UNPLUG;
1411 cancel_delayed_work(&pegasus->carrier_check);
1412 unregister_netdev(pegasus->net);
1413 usb_put_dev(interface_to_usbdev(intf));
a85a46f2 1414 unlink_all_urbs(pegasus);
1da177e4
LT		 1415 free_all_urbs(pegasus);
1416 free_skb_pool(pegasus);
4c13eb66 1417 if (pegasus->rx_skb != NULL) {
1da177e4 1418 dev_kfree_skb(pegasus->rx_skb);
4c13eb66
ACM		 1419 pegasus->rx_skb = NULL;
1420 }
1da177e4
LT		 1421 free_netdev(pegasus->net);
1422}
1423
27d72e85 1424static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1da177e4
LT		 1425{
1426 struct pegasus *pegasus = usb_get_intfdata(intf);
1427
1428 netif_device_detach (pegasus->net);
7e713b82 1429 cancel_delayed_work(&pegasus->carrier_check);
27d72e85 1430 if (netif_running(pegasus->net)) {
27d72e85
DB		 1431 usb_kill_urb(pegasus->rx_urb);
1432 usb_kill_urb(pegasus->intr_urb);
1433 }
1da177e4
LT		 1434 return 0;
1435}
1436
1437static int pegasus_resume (struct usb_interface *intf)
1438{
1439 struct pegasus *pegasus = usb_get_intfdata(intf);
1440
1441 netif_device_attach (pegasus->net);
27d72e85
DB		 1442 if (netif_running(pegasus->net)) {
1443 pegasus->rx_urb->status = 0;
1444 pegasus->rx_urb->actual_length = 0;
7d12e780 1445 read_bulk_callback(pegasus->rx_urb);
27d72e85
DB		 1446
1447 pegasus->intr_urb->status = 0;
1448 pegasus->intr_urb->actual_length = 0;
7d12e780 1449 intr_callback(pegasus->intr_urb);
27d72e85 1450 }
7e713b82
DB		 1451 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1452 CARRIER_CHECK_DELAY);
1da177e4
LT		 1453 return 0;
1454}
1455
1456static struct usb_driver pegasus_driver = {
1457 .name = driver_name,
1458 .probe = pegasus_probe,
1459 .disconnect = pegasus_disconnect,
1460 .id_table = pegasus_ids,
1461 .suspend = pegasus_suspend,
1462 .resume = pegasus_resume,
1463};
1464
a4f81a61
Y		 1465static void parse_id(char *id)
1466{
1467 unsigned int vendor_id=0, device_id=0, flags=0, i=0;
1468 char *token, *name=NULL;
1469
1470 if ((token = strsep(&id, ":")) != NULL)
1471 name = token;
1472 /* name now points to a null terminated string*/
1473 if ((token = strsep(&id, ":")) != NULL)
1474 vendor_id = simple_strtoul(token, NULL, 16);
1475 if ((token = strsep(&id, ":")) != NULL)
1476 device_id = simple_strtoul(token, NULL, 16);
1477 flags = simple_strtoul(id, NULL, 16);
1478 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1479 driver_name, name, vendor_id, device_id, flags);
1480
1481 if (vendor_id > 0x10000 || vendor_id == 0)
1482 return;
1483 if (device_id > 0x10000 || device_id == 0)
1484 return;
1485
1486 for (i=0; usb_dev_id[i].name; i++);
1487 usb_dev_id[i].name = name;
1488 usb_dev_id[i].vendor = vendor_id;
1489 usb_dev_id[i].device = device_id;
1490 usb_dev_id[i].private = flags;
1491 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1492 pegasus_ids[i].idVendor = vendor_id;
1493 pegasus_ids[i].idProduct = device_id;
1494}
1495
1da177e4
LT		 1496static int __init pegasus_init(void)
1497{
1498 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
a4f81a61
Y		 1499 if (devid)
1500 parse_id(devid);
1da177e4
LT		 1501 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1502 if (!pegasus_workqueue)
1503 return -ENOMEM;
1504 return usb_register(&pegasus_driver);
1505}
1506
1507static void __exit pegasus_exit(void)
1508{
1509 destroy_workqueue(pegasus_workqueue);
1510 usb_deregister(&pegasus_driver);
1511}
1512
1513module_init(pegasus_init);
1514module_exit(pegasus_exit);
Linux 6.x block layer and io_uring tree(s)