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USB: Remove unneeded void * casts in core files
[net-next-2.6.git] / drivers / usb / net / pegasus.c
CommitLineData
1da177e4
LT		 1/*
2 * Copyright (c) 1999-2005 Petko Manolov (petkan@users.sourceforge.net)
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * ChangeLog:
9 * .... Most of the time spent on reading sources & docs.
10 * v0.2.x First official release for the Linux kernel.
11 * v0.3.0 Beutified and structured, some bugs fixed.
12 * v0.3.x URBifying bulk requests and bugfixing. First relatively
13 * stable release. Still can touch device's registers only
14 * from top-halves.
15 * v0.4.0 Control messages remained unurbified are now URBs.
16 * Now we can touch the HW at any time.
17 * v0.4.9 Control urbs again use process context to wait. Argh...
18 * Some long standing bugs (enable_net_traffic) fixed.
19 * Also nasty trick about resubmiting control urb from
20 * interrupt context used. Please let me know how it
21 * behaves. Pegasus II support added since this version.
22 * TODO: suppressing HCD warnings spewage on disconnect.
23 * v0.4.13 Ethernet address is now set at probe(), not at open()
24 * time as this seems to break dhcpd.
25 * v0.5.0 branch to 2.5.x kernels
26 * v0.5.1 ethtool support added
27 * v0.5.5 rx socket buffers are in a pool and the their allocation
28 * is out of the interrupt routine.
29 */
30
1da177e4
LT		 31#include <linux/sched.h>
32#include <linux/slab.h>
33#include <linux/init.h>
34#include <linux/delay.h>
35#include <linux/netdevice.h>
36#include <linux/etherdevice.h>
37#include <linux/ethtool.h>
38#include <linux/mii.h>
39#include <linux/usb.h>
40#include <linux/module.h>
41#include <asm/byteorder.h>
42#include <asm/uaccess.h>
43#include "pegasus.h"
44
45/*
46 * Version Information
47 */
4a1728a2 48#define DRIVER_VERSION "v0.6.13 (2005/11/13)"
1da177e4
LT		 49#define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
50#define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
51
52static const char driver_name[] = "pegasus";
53
54#undef PEGASUS_WRITE_EEPROM
55#define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
56 BMSR_100FULL | BMSR_ANEGCAPABLE)
57
58static int loopback = 0;
59static int mii_mode = 0;
a4f81a61 60static char *devid=NULL;
1da177e4
LT		 61
62static struct usb_eth_dev usb_dev_id[] = {
63#define PEGASUS_DEV(pn, vid, pid, flags) \
64 {.name = pn, .vendor = vid, .device = pid, .private = flags},
65#include "pegasus.h"
66#undef PEGASUS_DEV
a4f81a61 67 {NULL, 0, 0, 0},
1da177e4
LT		 68 {NULL, 0, 0, 0}
69};
70
71static struct usb_device_id pegasus_ids[] = {
72#define PEGASUS_DEV(pn, vid, pid, flags) \
73 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
74#include "pegasus.h"
75#undef PEGASUS_DEV
a4f81a61 76 {},
1da177e4
LT		 77 {}
78};
79
80MODULE_AUTHOR(DRIVER_AUTHOR);
81MODULE_DESCRIPTION(DRIVER_DESC);
82MODULE_LICENSE("GPL");
83module_param(loopback, bool, 0);
84module_param(mii_mode, bool, 0);
a4f81a61 85module_param(devid, charp, 0);
1da177e4
LT		 86MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
87MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
a4f81a61 88MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
1da177e4
LT		 89
90/* use ethtool to change the level for any given device */
91static int msg_level = -1;
92module_param (msg_level, int, 0);
93MODULE_PARM_DESC (msg_level, "Override default message level");
94
95MODULE_DEVICE_TABLE(usb, pegasus_ids);
96
97static int update_eth_regs_async(pegasus_t *);
98/* Aargh!!! I _really_ hate such tweaks */
99static void ctrl_callback(struct urb *urb, struct pt_regs *regs)
100{
101 pegasus_t *pegasus = urb->context;
102
103 if (!pegasus)
104 return;
105
106 switch (urb->status) {
107 case 0:
108 if (pegasus->flags & ETH_REGS_CHANGE) {
109 pegasus->flags &= ~ETH_REGS_CHANGE;
110 pegasus->flags |= ETH_REGS_CHANGED;
111 update_eth_regs_async(pegasus);
112 return;
113 }
114 break;
115 case -EINPROGRESS:
116 return;
117 case -ENOENT:
118 break;
119 default:
120 if (netif_msg_drv(pegasus))
4a1728a2 121 dev_dbg(&pegasus->intf->dev, "%s, status %d\n",
1da177e4
LT		 122 __FUNCTION__, urb->status);
123 }
124 pegasus->flags &= ~ETH_REGS_CHANGED;
125 wake_up(&pegasus->ctrl_wait);
126}
127
128static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
129 void *data)
130{
131 int ret;
132 char *buffer;
133 DECLARE_WAITQUEUE(wait, current);
134
135 buffer = kmalloc(size, GFP_KERNEL);
136 if (!buffer) {
137 if (netif_msg_drv(pegasus))
138 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
139 __FUNCTION__);
140 return -ENOMEM;
141 }
142 add_wait_queue(&pegasus->ctrl_wait, &wait);
143 set_current_state(TASK_UNINTERRUPTIBLE);
144 while (pegasus->flags & ETH_REGS_CHANGED)
145 schedule();
146 remove_wait_queue(&pegasus->ctrl_wait, &wait);
147 set_current_state(TASK_RUNNING);
148
149 pegasus->dr.bRequestType = PEGASUS_REQT_READ;
150 pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
151 pegasus->dr.wValue = cpu_to_le16(0);
152 pegasus->dr.wIndex = cpu_to_le16p(&indx);
153 pegasus->dr.wLength = cpu_to_le16p(&size);
154 pegasus->ctrl_urb->transfer_buffer_length = size;
155
156 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
157 usb_rcvctrlpipe(pegasus->usb, 0),
158 (char *) &pegasus->dr,
159 buffer, size, ctrl_callback, pegasus);
160
161 add_wait_queue(&pegasus->ctrl_wait, &wait);
162 set_current_state(TASK_UNINTERRUPTIBLE);
163
164 /* using ATOMIC, we'd never wake up if we slept */
165 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
955a2608
DB		 166 if (ret == -ENODEV)
167 netif_device_detach(pegasus->net);
1da177e4
LT		 168 if (netif_msg_drv(pegasus))
169 dev_err(&pegasus->intf->dev, "%s, status %d\n",
170 __FUNCTION__, ret);
171 goto out;
172 }
173
174 schedule();
175out:
176 remove_wait_queue(&pegasus->ctrl_wait, &wait);
177 memcpy(data, buffer, size);
178 kfree(buffer);
179
180 return ret;
181}
182
183static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
184 void *data)
185{
186 int ret;
187 char *buffer;
188 DECLARE_WAITQUEUE(wait, current);
189
190 buffer = kmalloc(size, GFP_KERNEL);
191 if (!buffer) {
192 if (netif_msg_drv(pegasus))
193 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
194 __FUNCTION__);
195 return -ENOMEM;
196 }
197 memcpy(buffer, data, size);
198
199 add_wait_queue(&pegasus->ctrl_wait, &wait);
200 set_current_state(TASK_UNINTERRUPTIBLE);
201 while (pegasus->flags & ETH_REGS_CHANGED)
202 schedule();
203 remove_wait_queue(&pegasus->ctrl_wait, &wait);
204 set_current_state(TASK_RUNNING);
205
206 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
207 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
208 pegasus->dr.wValue = cpu_to_le16(0);
209 pegasus->dr.wIndex = cpu_to_le16p(&indx);
210 pegasus->dr.wLength = cpu_to_le16p(&size);
211 pegasus->ctrl_urb->transfer_buffer_length = size;
212
213 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
214 usb_sndctrlpipe(pegasus->usb, 0),
215 (char *) &pegasus->dr,
216 buffer, size, ctrl_callback, pegasus);
217
218 add_wait_queue(&pegasus->ctrl_wait, &wait);
219 set_current_state(TASK_UNINTERRUPTIBLE);
220
221 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
955a2608
DB		 222 if (ret == -ENODEV)
223 netif_device_detach(pegasus->net);
1da177e4
LT		 224 if (netif_msg_drv(pegasus))
225 dev_err(&pegasus->intf->dev, "%s, status %d\n",
226 __FUNCTION__, ret);
227 goto out;
228 }
229
230 schedule();
231out:
232 remove_wait_queue(&pegasus->ctrl_wait, &wait);
233 kfree(buffer);
234
235 return ret;
236}
237
238static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
239{
240 int ret;
241 char *tmp;
242 DECLARE_WAITQUEUE(wait, current);
243
244 tmp = kmalloc(1, GFP_KERNEL);
245 if (!tmp) {
246 if (netif_msg_drv(pegasus))
247 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
248 __FUNCTION__);
249 return -ENOMEM;
250 }
251 memcpy(tmp, &data, 1);
252 add_wait_queue(&pegasus->ctrl_wait, &wait);
253 set_current_state(TASK_UNINTERRUPTIBLE);
254 while (pegasus->flags & ETH_REGS_CHANGED)
255 schedule();
256 remove_wait_queue(&pegasus->ctrl_wait, &wait);
257 set_current_state(TASK_RUNNING);
258
259 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
260 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
261 pegasus->dr.wValue = cpu_to_le16(data);
262 pegasus->dr.wIndex = cpu_to_le16p(&indx);
263 pegasus->dr.wLength = cpu_to_le16(1);
264 pegasus->ctrl_urb->transfer_buffer_length = 1;
265
266 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
267 usb_sndctrlpipe(pegasus->usb, 0),
268 (char *) &pegasus->dr,
016534cf 269 tmp, 1, ctrl_callback, pegasus);
1da177e4
LT		 270
271 add_wait_queue(&pegasus->ctrl_wait, &wait);
272 set_current_state(TASK_UNINTERRUPTIBLE);
273
274 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
955a2608
DB		 275 if (ret == -ENODEV)
276 netif_device_detach(pegasus->net);
1da177e4
LT		 277 if (netif_msg_drv(pegasus))
278 dev_err(&pegasus->intf->dev, "%s, status %d\n",
279 __FUNCTION__, ret);
280 goto out;
281 }
282
283 schedule();
284out:
285 remove_wait_queue(&pegasus->ctrl_wait, &wait);
286 kfree(tmp);
287
288 return ret;
289}
290
291static int update_eth_regs_async(pegasus_t * pegasus)
292{
293 int ret;
294
295 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
296 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
297 pegasus->dr.wValue = 0;
298 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
299 pegasus->dr.wLength = cpu_to_le16(3);
300 pegasus->ctrl_urb->transfer_buffer_length = 3;
301
302 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
303 usb_sndctrlpipe(pegasus->usb, 0),
304 (char *) &pegasus->dr,
305 pegasus->eth_regs, 3, ctrl_callback, pegasus);
306
955a2608
DB		 307 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
308 if (ret == -ENODEV)
309 netif_device_detach(pegasus->net);
1da177e4
LT		 310 if (netif_msg_drv(pegasus))
311 dev_err(&pegasus->intf->dev, "%s, status %d\n",
312 __FUNCTION__, ret);
955a2608 313 }
1da177e4
LT		 314
315 return ret;
316}
317
318static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
319{
320 int i;
321 __u8 data[4] = { phy, 0, 0, indx };
322 __le16 regdi;
323 int ret;
324
4a1728a2
PM		 325 set_register(pegasus, PhyCtrl, 0);
326 set_registers(pegasus, PhyAddr, sizeof (data), data);
327 set_register(pegasus, PhyCtrl, (indx | PHY_READ));
1da177e4
LT		 328 for (i = 0; i < REG_TIMEOUT; i++) {
329 ret = get_registers(pegasus, PhyCtrl, 1, data);
7e713b82
DB		 330 if (ret == -ESHUTDOWN)
331 goto fail;
1da177e4
LT		 332 if (data[0] & PHY_DONE)
333 break;
334 }
335 if (i < REG_TIMEOUT) {
336 ret = get_registers(pegasus, PhyData, 2, &regdi);
337 *regd = le16_to_cpu(regdi);
4a1728a2 338 return ret;
1da177e4 339 }
7e713b82 340fail:
1da177e4
LT		 341 if (netif_msg_drv(pegasus))
342 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
343
4a1728a2 344 return ret;
1da177e4
LT		 345}
346
347static int mdio_read(struct net_device *dev, int phy_id, int loc)
348{
349 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
350 u16 res;
351
352 read_mii_word(pegasus, phy_id, loc, &res);
353 return (int)res;
354}
355
356static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
357{
358 int i;
359 __u8 data[4] = { phy, 0, 0, indx };
360 int ret;
361
362 data[1] = (u8) regd;
363 data[2] = (u8) (regd >> 8);
4a1728a2
PM		 364 set_register(pegasus, PhyCtrl, 0);
365 set_registers(pegasus, PhyAddr, sizeof(data), data);
366 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
1da177e4
LT		 367 for (i = 0; i < REG_TIMEOUT; i++) {
368 ret = get_registers(pegasus, PhyCtrl, 1, data);
7e713b82
DB		 369 if (ret == -ESHUTDOWN)
370 goto fail;
1da177e4
LT		 371 if (data[0] & PHY_DONE)
372 break;
373 }
374 if (i < REG_TIMEOUT)
4a1728a2 375 return ret;
1da177e4 376
7e713b82 377fail:
1da177e4
LT		 378 if (netif_msg_drv(pegasus))
379 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
4a1728a2 380 return -ETIMEDOUT;
1da177e4
LT		 381}
382
383static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
384{
385 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
386
387 write_mii_word(pegasus, phy_id, loc, val);
388}
389
390static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
391{
392 int i;
393 __u8 tmp;
394 __le16 retdatai;
395 int ret;
396
4a1728a2
PM		 397 set_register(pegasus, EpromCtrl, 0);
398 set_register(pegasus, EpromOffset, index);
399 set_register(pegasus, EpromCtrl, EPROM_READ);
1da177e4
LT		 400
401 for (i = 0; i < REG_TIMEOUT; i++) {
402 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
403 if (tmp & EPROM_DONE)
404 break;
7e713b82
DB		 405 if (ret == -ESHUTDOWN)
406 goto fail;
1da177e4
LT		 407 }
408 if (i < REG_TIMEOUT) {
409 ret = get_registers(pegasus, EpromData, 2, &retdatai);
410 *retdata = le16_to_cpu(retdatai);
4a1728a2 411 return ret;
1da177e4
LT		 412 }
413
7e713b82 414fail:
1da177e4
LT		 415 if (netif_msg_drv(pegasus))
416 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
4a1728a2 417 return -ETIMEDOUT;
1da177e4
LT		 418}
419
420#ifdef PEGASUS_WRITE_EEPROM
421static inline void enable_eprom_write(pegasus_t * pegasus)
422{
423 __u8 tmp;
424 int ret;
425
4a1728a2
PM		 426 get_registers(pegasus, EthCtrl2, 1, &tmp);
427 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
1da177e4
LT		 428}
429
430static inline void disable_eprom_write(pegasus_t * pegasus)
431{
432 __u8 tmp;
433 int ret;
434
4a1728a2
PM		 435 get_registers(pegasus, EthCtrl2, 1, &tmp);
436 set_register(pegasus, EpromCtrl, 0);
437 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
1da177e4
LT		 438}
439
440static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
441{
442 int i;
443 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
444 int ret;
445
4a1728a2 446 set_registers(pegasus, EpromOffset, 4, d);
1da177e4 447 enable_eprom_write(pegasus);
4a1728a2
PM		 448 set_register(pegasus, EpromOffset, index);
449 set_registers(pegasus, EpromData, 2, &data);
450 set_register(pegasus, EpromCtrl, EPROM_WRITE);
1da177e4
LT		 451
452 for (i = 0; i < REG_TIMEOUT; i++) {
453 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
7e713b82
DB		 454 if (ret == -ESHUTDOWN)
455 goto fail;
1da177e4
LT		 456 if (tmp & EPROM_DONE)
457 break;
458 }
459 disable_eprom_write(pegasus);
460 if (i < REG_TIMEOUT)
4a1728a2 461 return ret;
7e713b82 462fail:
1da177e4
LT		 463 if (netif_msg_drv(pegasus))
464 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
4a1728a2 465 return -ETIMEDOUT;
1da177e4
LT		 466}
467#endif /* PEGASUS_WRITE_EEPROM */
468
469static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
470{
471 int i;
472 __u16 w16;
473
474 for (i = 0; i < 3; i++) {
475 read_eprom_word(pegasus, i, &w16);
476 ((__le16 *) id)[i] = cpu_to_le16p(&w16);
477 }
478}
479
480static void set_ethernet_addr(pegasus_t * pegasus)
481{
482 __u8 node_id[6];
1da177e4
LT		 483
484 get_node_id(pegasus, node_id);
4a1728a2 485 set_registers(pegasus, EthID, sizeof (node_id), node_id);
1da177e4
LT		 486 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
487}
488
489static inline int reset_mac(pegasus_t * pegasus)
490{
491 __u8 data = 0x8;
492 int i;
1da177e4 493
4a1728a2 494 set_register(pegasus, EthCtrl1, data);
1da177e4 495 for (i = 0; i < REG_TIMEOUT; i++) {
4a1728a2 496 get_registers(pegasus, EthCtrl1, 1, &data);
1da177e4
LT		 497 if (~data & 0x08) {
498 if (loopback & 1)
499 break;
500 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
4a1728a2 501 set_register(pegasus, Gpio1, 0x34);
1da177e4 502 else
4a1728a2
PM		 503 set_register(pegasus, Gpio1, 0x26);
504 set_register(pegasus, Gpio0, pegasus->features);
505 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
1da177e4
LT		 506 break;
507 }
508 }
509 if (i == REG_TIMEOUT)
4a1728a2 510 return -ETIMEDOUT;
1da177e4
LT		 511
512 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
513 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
4a1728a2
PM		 514 set_register(pegasus, Gpio0, 0x24);
515 set_register(pegasus, Gpio0, 0x26);
1da177e4
LT		 516 }
517 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
518 __u16 auxmode;
519 read_mii_word(pegasus, 3, 0x1b, &auxmode);
520 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
521 }
522
523 return 0;
524}
525
526static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
527{
528 __u16 linkpart;
529 __u8 data[4];
530 pegasus_t *pegasus = netdev_priv(dev);
531 int ret;
532
533 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
534 data[0] = 0xc9;
535 data[1] = 0;
536 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
537 data[1] |= 0x20; /* set full duplex */
538 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
539 data[1] |= 0x10; /* set 100 Mbps */
540 if (mii_mode)
541 data[1] = 0;
542 data[2] = (loopback & 1) ? 0x09 : 0x01;
543
544 memcpy(pegasus->eth_regs, data, sizeof (data));
545 ret = set_registers(pegasus, EthCtrl0, 3, data);
546
547 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
efafe6fb 548 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
1da177e4
LT		 549 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
550 u16 auxmode;
551 read_mii_word(pegasus, 0, 0x1b, &auxmode);
552 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
553 }
554
4a1728a2 555 return ret;
1da177e4
LT		 556}
557
558static void fill_skb_pool(pegasus_t * pegasus)
559{
560 int i;
561
562 for (i = 0; i < RX_SKBS; i++) {
563 if (pegasus->rx_pool[i])
564 continue;
565 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
566 /*
567 ** we give up if the allocation fail. the tasklet will be
568 ** rescheduled again anyway...
569 */
570 if (pegasus->rx_pool[i] == NULL)
571 return;
572 pegasus->rx_pool[i]->dev = pegasus->net;
573 skb_reserve(pegasus->rx_pool[i], 2);
574 }
575}
576
577static void free_skb_pool(pegasus_t * pegasus)
578{
579 int i;
580
581 for (i = 0; i < RX_SKBS; i++) {
582 if (pegasus->rx_pool[i]) {
583 dev_kfree_skb(pegasus->rx_pool[i]);
584 pegasus->rx_pool[i] = NULL;
585 }
586 }
587}
588
589static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
590{
591 int i;
592 struct sk_buff *skb;
593
594 for (i = 0; i < RX_SKBS; i++) {
595 if (likely(pegasus->rx_pool[i] != NULL)) {
596 skb = pegasus->rx_pool[i];
597 pegasus->rx_pool[i] = NULL;
598 return skb;
599 }
600 }
601 return NULL;
602}
603
604static void read_bulk_callback(struct urb *urb, struct pt_regs *regs)
605{
606 pegasus_t *pegasus = urb->context;
607 struct net_device *net;
608 int rx_status, count = urb->actual_length;
609 u8 *buf = urb->transfer_buffer;
610 __u16 pkt_len;
611
612 if (!pegasus)
613 return;
614
615 net = pegasus->net;
616 if (!netif_device_present(net) || !netif_running(net))
617 return;
618
619 switch (urb->status) {
620 case 0:
621 break;
622 case -ETIMEDOUT:
623 if (netif_msg_rx_err(pegasus))
624 pr_debug("%s: reset MAC\n", net->name);
625 pegasus->flags &= ~PEGASUS_RX_BUSY;
626 break;
627 case -EPIPE: /* stall, or disconnect from TT */
628 /* FIXME schedule work to clear the halt */
629 if (netif_msg_rx_err(pegasus))
630 printk(KERN_WARNING "%s: no rx stall recovery\n",
631 net->name);
632 return;
633 case -ENOENT:
634 case -ECONNRESET:
635 case -ESHUTDOWN:
636 if (netif_msg_ifdown(pegasus))
637 pr_debug("%s: rx unlink, %d\n", net->name, urb->status);
638 return;
639 default:
640 if (netif_msg_rx_err(pegasus))
641 pr_debug("%s: RX status %d\n", net->name, urb->status);
642 goto goon;
643 }
644
645 if (!count || count < 4)
646 goto goon;
647
648 rx_status = buf[count - 2];
649 if (rx_status & 0x1e) {
650 if (netif_msg_rx_err(pegasus))
651 pr_debug("%s: RX packet error %x\n",
652 net->name, rx_status);
653 pegasus->stats.rx_errors++;
654 if (rx_status & 0x06) // long or runt
655 pegasus->stats.rx_length_errors++;
656 if (rx_status & 0x08)
657 pegasus->stats.rx_crc_errors++;
658 if (rx_status & 0x10) // extra bits
659 pegasus->stats.rx_frame_errors++;
660 goto goon;
661 }
662 if (pegasus->chip == 0x8513) {
663 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
664 pkt_len &= 0x0fff;
665 pegasus->rx_skb->data += 2;
666 } else {
667 pkt_len = buf[count - 3] << 8;
668 pkt_len += buf[count - 4];
669 pkt_len &= 0xfff;
670 pkt_len -= 8;
671 }
672
a85a46f2
KV		 673 /*
674 * If the packet is unreasonably long, quietly drop it rather than
675 * kernel panicing by calling skb_put.
676 */
677 if (pkt_len > PEGASUS_MTU)
678 goto goon;
679
1da177e4
LT		 680 /*
681 * at this point we are sure pegasus->rx_skb != NULL
682 * so we go ahead and pass up the packet.
683 */
684 skb_put(pegasus->rx_skb, pkt_len);
685 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
686 netif_rx(pegasus->rx_skb);
687 pegasus->stats.rx_packets++;
688 pegasus->stats.rx_bytes += pkt_len;
689
690 if (pegasus->flags & PEGASUS_UNPLUG)
691 return;
692
693 spin_lock(&pegasus->rx_pool_lock);
694 pegasus->rx_skb = pull_skb(pegasus);
695 spin_unlock(&pegasus->rx_pool_lock);
696
697 if (pegasus->rx_skb == NULL)
698 goto tl_sched;
699goon:
700 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
701 usb_rcvbulkpipe(pegasus->usb, 1),
702 pegasus->rx_skb->data, PEGASUS_MTU + 8,
703 read_bulk_callback, pegasus);
955a2608
DB		 704 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
705 if (rx_status == -ENODEV)
706 netif_device_detach(pegasus->net);
707 else if (rx_status) {
1da177e4
LT		 708 pegasus->flags |= PEGASUS_RX_URB_FAIL;
709 goto tl_sched;
710 } else {
711 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
712 }
713
714 return;
715
716tl_sched:
717 tasklet_schedule(&pegasus->rx_tl);
718}
719
720static void rx_fixup(unsigned long data)
721{
722 pegasus_t *pegasus;
723 unsigned long flags;
955a2608 724 int status;
1da177e4
LT		 725
726 pegasus = (pegasus_t *) data;
727 if (pegasus->flags & PEGASUS_UNPLUG)
728 return;
729
730 spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
731 fill_skb_pool(pegasus);
732 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
733 if (pegasus->rx_skb)
734 goto try_again;
735 if (pegasus->rx_skb == NULL) {
736 pegasus->rx_skb = pull_skb(pegasus);
737 }
738 if (pegasus->rx_skb == NULL) {
739 if (netif_msg_rx_err(pegasus))
740 printk(KERN_WARNING "%s: low on memory\n",
741 pegasus->net->name);
742 tasklet_schedule(&pegasus->rx_tl);
743 goto done;
744 }
745 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
746 usb_rcvbulkpipe(pegasus->usb, 1),
747 pegasus->rx_skb->data, PEGASUS_MTU + 8,
748 read_bulk_callback, pegasus);
749try_again:
955a2608
DB		 750 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
751 if (status == -ENODEV)
752 netif_device_detach(pegasus->net);
753 else if (status) {
1da177e4
LT		 754 pegasus->flags |= PEGASUS_RX_URB_FAIL;
755 tasklet_schedule(&pegasus->rx_tl);
756 } else {
757 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
758 }
759done:
760 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
761}
762
763static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
764{
765 pegasus_t *pegasus = urb->context;
766 struct net_device *net = pegasus->net;
767
768 if (!pegasus)
769 return;
770
771 if (!netif_device_present(net) || !netif_running(net))
772 return;
773
774 switch (urb->status) {
775 case -EPIPE:
776 /* FIXME schedule_work() to clear the tx halt */
777 netif_stop_queue(net);
778 if (netif_msg_tx_err(pegasus))
779 printk(KERN_WARNING "%s: no tx stall recovery\n",
780 net->name);
781 return;
782 case -ENOENT:
783 case -ECONNRESET:
784 case -ESHUTDOWN:
785 if (netif_msg_ifdown(pegasus))
786 pr_debug("%s: tx unlink, %d\n", net->name, urb->status);
787 return;
788 default:
789 if (netif_msg_tx_err(pegasus))
790 pr_info("%s: TX status %d\n", net->name, urb->status);
791 /* FALL THROUGH */
792 case 0:
793 break;
794 }
795
796 net->trans_start = jiffies;
797 netif_wake_queue(net);
798}
799
800static void intr_callback(struct urb *urb, struct pt_regs *regs)
801{
802 pegasus_t *pegasus = urb->context;
803 struct net_device *net;
804 int status;
805
806 if (!pegasus)
807 return;
808 net = pegasus->net;
809
810 switch (urb->status) {
811 case 0:
812 break;
813 case -ECONNRESET: /* unlink */
814 case -ENOENT:
815 case -ESHUTDOWN:
816 return;
817 default:
818 /* some Pegasus-I products report LOTS of data
819 * toggle errors... avoid log spamming
820 */
821 if (netif_msg_timer(pegasus))
822 pr_debug("%s: intr status %d\n", net->name,
823 urb->status);
824 }
825
826 if (urb->actual_length >= 6) {
827 u8 * d = urb->transfer_buffer;
828
829 /* byte 0 == tx_status1, reg 2B */
830 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
831 |LATE_COL|JABBER_TIMEOUT)) {
832 pegasus->stats.tx_errors++;
833 if (d[0] & TX_UNDERRUN)
834 pegasus->stats.tx_fifo_errors++;
835 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
836 pegasus->stats.tx_aborted_errors++;
837 if (d[0] & LATE_COL)
838 pegasus->stats.tx_window_errors++;
839 }
840
841 /* d[5].LINK_STATUS lies on some adapters.
842 * d[0].NO_CARRIER kicks in only with failed TX.
843 * ... so monitoring with MII may be safest.
844 */
845 if (d[0] & NO_CARRIER)
846 netif_carrier_off(net);
847 else
848 netif_carrier_on(net);
849
850 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
851 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
852 }
853
854 status = usb_submit_urb(urb, SLAB_ATOMIC);
955a2608
DB		 855 if (status == -ENODEV)
856 netif_device_detach(pegasus->net);
1da177e4
LT		 857 if (status && netif_msg_timer(pegasus))
858 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
859 net->name, status);
860}
861
862static void pegasus_tx_timeout(struct net_device *net)
863{
864 pegasus_t *pegasus = netdev_priv(net);
865 if (netif_msg_timer(pegasus))
866 printk(KERN_WARNING "%s: tx timeout\n", net->name);
1da177e4
LT		 867 usb_unlink_urb(pegasus->tx_urb);
868 pegasus->stats.tx_errors++;
869}
870
871static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
872{
873 pegasus_t *pegasus = netdev_priv(net);
874 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
875 int res;
876 __u16 l16 = skb->len;
877
878 netif_stop_queue(net);
879
880 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
881 memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
882 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
883 usb_sndbulkpipe(pegasus->usb, 2),
884 pegasus->tx_buff, count,
885 write_bulk_callback, pegasus);
886 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
887 if (netif_msg_tx_err(pegasus))
888 printk(KERN_WARNING "%s: fail tx, %d\n",
889 net->name, res);
890 switch (res) {
891 case -EPIPE: /* stall, or disconnect from TT */
892 /* cleanup should already have been scheduled */
893 break;
894 case -ENODEV: /* disconnect() upcoming */
955a2608 895 netif_device_detach(pegasus->net);
1da177e4
LT		 896 break;
897 default:
898 pegasus->stats.tx_errors++;
899 netif_start_queue(net);
900 }
901 } else {
902 pegasus->stats.tx_packets++;
903 pegasus->stats.tx_bytes += skb->len;
904 net->trans_start = jiffies;
905 }
906 dev_kfree_skb(skb);
907
908 return 0;
909}
910
911static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
912{
913 return &((pegasus_t *) netdev_priv(dev))->stats;
914}
915
916static inline void disable_net_traffic(pegasus_t * pegasus)
917{
918 int tmp = 0;
1da177e4 919
4a1728a2 920 set_registers(pegasus, EthCtrl0, 2, &tmp);
1da177e4
LT		 921}
922
923static inline void get_interrupt_interval(pegasus_t * pegasus)
924{
925 __u8 data[2];
926
927 read_eprom_word(pegasus, 4, (__u16 *) data);
a85a46f2
KV		 928 if (pegasus->usb->speed != USB_SPEED_HIGH) {
929 if (data[1] < 0x80) {
930 if (netif_msg_timer(pegasus))
931 dev_info(&pegasus->intf->dev, "intr interval "
932 "changed from %ums to %ums\n",
933 data[1], 0x80);
934 data[1] = 0x80;
935#ifdef PEGASUS_WRITE_EEPROM
936 write_eprom_word(pegasus, 4, *(__u16 *) data);
1da177e4 937#endif
a85a46f2 938 }
1da177e4
LT		 939 }
940 pegasus->intr_interval = data[1];
941}
942
943static void set_carrier(struct net_device *net)
944{
945 pegasus_t *pegasus = netdev_priv(net);
946 u16 tmp;
947
a85a46f2 948 if (!read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
1da177e4 949 return;
a85a46f2 950
1da177e4
LT		 951 if (tmp & BMSR_LSTATUS)
952 netif_carrier_on(net);
953 else
954 netif_carrier_off(net);
955}
956
957static void free_all_urbs(pegasus_t * pegasus)
958{
959 usb_free_urb(pegasus->intr_urb);
960 usb_free_urb(pegasus->tx_urb);
961 usb_free_urb(pegasus->rx_urb);
962 usb_free_urb(pegasus->ctrl_urb);
963}
964
965static void unlink_all_urbs(pegasus_t * pegasus)
966{
967 usb_kill_urb(pegasus->intr_urb);
968 usb_kill_urb(pegasus->tx_urb);
969 usb_kill_urb(pegasus->rx_urb);
970 usb_kill_urb(pegasus->ctrl_urb);
971}
972
973static int alloc_urbs(pegasus_t * pegasus)
974{
975 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
976 if (!pegasus->ctrl_urb) {
977 return 0;
978 }
979 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
980 if (!pegasus->rx_urb) {
981 usb_free_urb(pegasus->ctrl_urb);
982 return 0;
983 }
984 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
985 if (!pegasus->tx_urb) {
986 usb_free_urb(pegasus->rx_urb);
987 usb_free_urb(pegasus->ctrl_urb);
988 return 0;
989 }
990 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
991 if (!pegasus->intr_urb) {
992 usb_free_urb(pegasus->tx_urb);
993 usb_free_urb(pegasus->rx_urb);
994 usb_free_urb(pegasus->ctrl_urb);
995 return 0;
996 }
997
998 return 1;
999}
1000
1001static int pegasus_open(struct net_device *net)
1002{
1003 pegasus_t *pegasus = netdev_priv(net);
1004 int res;
1005
1006 if (pegasus->rx_skb == NULL)
1007 pegasus->rx_skb = pull_skb(pegasus);
1008 /*
1009 ** Note: no point to free the pool. it is empty :-)
1010 */
1011 if (!pegasus->rx_skb)
1012 return -ENOMEM;
1013
1014 res = set_registers(pegasus, EthID, 6, net->dev_addr);
1015
1016 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
1017 usb_rcvbulkpipe(pegasus->usb, 1),
1018 pegasus->rx_skb->data, PEGASUS_MTU + 8,
1019 read_bulk_callback, pegasus);
1020 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
955a2608
DB		 1021 if (res == -ENODEV)
1022 netif_device_detach(pegasus->net);
1da177e4
LT		 1023 if (netif_msg_ifup(pegasus))
1024 pr_debug("%s: failed rx_urb, %d", net->name, res);
1025 goto exit;
1026 }
1027
1028 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
1029 usb_rcvintpipe(pegasus->usb, 3),
1030 pegasus->intr_buff, sizeof (pegasus->intr_buff),
1031 intr_callback, pegasus, pegasus->intr_interval);
1032 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
955a2608
DB		 1033 if (res == -ENODEV)
1034 netif_device_detach(pegasus->net);
1da177e4
LT		 1035 if (netif_msg_ifup(pegasus))
1036 pr_debug("%s: failed intr_urb, %d\n", net->name, res);
1037 usb_kill_urb(pegasus->rx_urb);
1038 goto exit;
1039 }
1040 if ((res = enable_net_traffic(net, pegasus->usb))) {
1041 if (netif_msg_ifup(pegasus))
1042 pr_debug("%s: can't enable_net_traffic() - %d\n",
1043 net->name, res);
1044 res = -EIO;
1045 usb_kill_urb(pegasus->rx_urb);
1046 usb_kill_urb(pegasus->intr_urb);
1047 free_skb_pool(pegasus);
1048 goto exit;
1049 }
1050 set_carrier(net);
1051 netif_start_queue(net);
1052 if (netif_msg_ifup(pegasus))
1053 pr_debug("%s: open\n", net->name);
1054 res = 0;
1055exit:
1056 return res;
1057}
1058
1059static int pegasus_close(struct net_device *net)
1060{
1061 pegasus_t *pegasus = netdev_priv(net);
1062
1063 netif_stop_queue(net);
1064 if (!(pegasus->flags & PEGASUS_UNPLUG))
1065 disable_net_traffic(pegasus);
1066 tasklet_kill(&pegasus->rx_tl);
1067 unlink_all_urbs(pegasus);
1068
1069 return 0;
1070}
1071
1072static void pegasus_get_drvinfo(struct net_device *dev,
1073 struct ethtool_drvinfo *info)
1074{
1075 pegasus_t *pegasus = netdev_priv(dev);
1076 strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1077 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1078 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1079}
1080
1081/* also handles three patterns of some kind in hardware */
1082#define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
1083
1084static void
1085pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1086{
1087 pegasus_t *pegasus = netdev_priv(dev);
1088
1089 wol->supported = WAKE_MAGIC | WAKE_PHY;
1090 wol->wolopts = pegasus->wolopts;
1091}
1092
1093static int
1094pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1095{
1096 pegasus_t *pegasus = netdev_priv(dev);
1097 u8 reg78 = 0x04;
1098
1099 if (wol->wolopts & ~WOL_SUPPORTED)
1100 return -EINVAL;
1101
1102 if (wol->wolopts & WAKE_MAGIC)
1103 reg78 |= 0x80;
1104 if (wol->wolopts & WAKE_PHY)
1105 reg78 |= 0x40;
1106 /* FIXME this 0x10 bit still needs to get set in the chip... */
1107 if (wol->wolopts)
1108 pegasus->eth_regs[0] |= 0x10;
1109 else
1110 pegasus->eth_regs[0] &= ~0x10;
1111 pegasus->wolopts = wol->wolopts;
1112 return set_register(pegasus, WakeupControl, reg78);
1113}
1114
1115static inline void pegasus_reset_wol(struct net_device *dev)
1116{
1117 struct ethtool_wolinfo wol;
1118
1119 memset(&wol, 0, sizeof wol);
1120 (void) pegasus_set_wol(dev, &wol);
1121}
1122
1123static int
1124pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1125{
1126 pegasus_t *pegasus;
1127
1128 if (in_atomic())
1129 return 0;
1130
1131 pegasus = netdev_priv(dev);
1132 mii_ethtool_gset(&pegasus->mii, ecmd);
1133
1134 return 0;
1135}
1136
1137static int
1138pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1139{
1140 pegasus_t *pegasus = netdev_priv(dev);
1141 return mii_ethtool_sset(&pegasus->mii, ecmd);
1142}
1143
1144static int pegasus_nway_reset(struct net_device *dev)
1145{
1146 pegasus_t *pegasus = netdev_priv(dev);
1147 return mii_nway_restart(&pegasus->mii);
1148}
1149
1150static u32 pegasus_get_link(struct net_device *dev)
1151{
1152 pegasus_t *pegasus = netdev_priv(dev);
1153 return mii_link_ok(&pegasus->mii);
1154}
1155
1156static u32 pegasus_get_msglevel(struct net_device *dev)
1157{
1158 pegasus_t *pegasus = netdev_priv(dev);
1159 return pegasus->msg_enable;
1160}
1161
1162static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1163{
1164 pegasus_t *pegasus = netdev_priv(dev);
1165 pegasus->msg_enable = v;
1166}
1167
1168static struct ethtool_ops ops = {
1169 .get_drvinfo = pegasus_get_drvinfo,
1170 .get_settings = pegasus_get_settings,
1171 .set_settings = pegasus_set_settings,
1172 .nway_reset = pegasus_nway_reset,
1173 .get_link = pegasus_get_link,
1174 .get_msglevel = pegasus_get_msglevel,
1175 .set_msglevel = pegasus_set_msglevel,
1176 .get_wol = pegasus_get_wol,
1177 .set_wol = pegasus_set_wol,
1178};
1179
1180static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1181{
1182 __u16 *data = (__u16 *) & rq->ifr_ifru;
1183 pegasus_t *pegasus = netdev_priv(net);
1184 int res;
1185
1186 switch (cmd) {
1187 case SIOCDEVPRIVATE:
1188 data[0] = pegasus->phy;
1189 case SIOCDEVPRIVATE + 1:
1190 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1191 res = 0;
1192 break;
1193 case SIOCDEVPRIVATE + 2:
1194 if (!capable(CAP_NET_ADMIN))
1195 return -EPERM;
1196 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1197 res = 0;
1198 break;
1199 default:
1200 res = -EOPNOTSUPP;
1201 }
1202 return res;
1203}
1204
1205static void pegasus_set_multicast(struct net_device *net)
1206{
1207 pegasus_t *pegasus = netdev_priv(net);
1208
1209 if (net->flags & IFF_PROMISC) {
1210 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1211 if (netif_msg_link(pegasus))
1212 pr_info("%s: Promiscuous mode enabled.\n", net->name);
ae0a97bf 1213 } else if (net->mc_count ||
1da177e4
LT		 1214 (net->flags & IFF_ALLMULTI)) {
1215 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1216 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1217 if (netif_msg_link(pegasus))
1218 pr_info("%s: set allmulti\n", net->name);
1219 } else {
1220 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1221 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1222 }
1223
1224 pegasus->flags |= ETH_REGS_CHANGE;
1225 ctrl_callback(pegasus->ctrl_urb, NULL);
1226}
1227
1228static __u8 mii_phy_probe(pegasus_t * pegasus)
1229{
1230 int i;
1231 __u16 tmp;
1232
1233 for (i = 0; i < 32; i++) {
1234 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1235 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1236 continue;
1237 else
1238 return i;
1239 }
1240
1241 return 0xff;
1242}
1243
1244static inline void setup_pegasus_II(pegasus_t * pegasus)
1245{
1246 __u8 data = 0xa5;
1da177e4 1247
4a1728a2
PM		 1248 set_register(pegasus, Reg1d, 0);
1249 set_register(pegasus, Reg7b, 1);
1da177e4
LT		 1250 mdelay(100);
1251 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
4a1728a2 1252 set_register(pegasus, Reg7b, 0);
1da177e4 1253 else
4a1728a2 1254 set_register(pegasus, Reg7b, 2);
1da177e4 1255
4a1728a2
PM		 1256 set_register(pegasus, 0x83, data);
1257 get_registers(pegasus, 0x83, 1, &data);
1da177e4
LT		 1258
1259 if (data == 0xa5) {
1260 pegasus->chip = 0x8513;
1261 } else {
1262 pegasus->chip = 0;
1263 }
1264
4a1728a2
PM		 1265 set_register(pegasus, 0x80, 0xc0);
1266 set_register(pegasus, 0x83, 0xff);
1267 set_register(pegasus, 0x84, 0x01);
1da177e4
LT		 1268
1269 if (pegasus->features & HAS_HOME_PNA && mii_mode)
4a1728a2 1270 set_register(pegasus, Reg81, 6);
1da177e4 1271 else
4a1728a2 1272 set_register(pegasus, Reg81, 2);
1da177e4
LT		 1273}
1274
1275
1276static struct workqueue_struct *pegasus_workqueue = NULL;
1277#define CARRIER_CHECK_DELAY (2 * HZ)
1278
1279static void check_carrier(void *data)
1280{
1281 pegasus_t *pegasus = data;
1282 set_carrier(pegasus->net);
1283 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1284 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1285 CARRIER_CHECK_DELAY);
1286 }
1287}
1288
1289static int pegasus_probe(struct usb_interface *intf,
1290 const struct usb_device_id *id)
1291{
1292 struct usb_device *dev = interface_to_usbdev(intf);
1293 struct net_device *net;
1294 pegasus_t *pegasus;
1295 int dev_index = id - pegasus_ids;
1296 int res = -ENOMEM;
1297
1298 usb_get_dev(dev);
1299 net = alloc_etherdev(sizeof(struct pegasus));
1300 if (!net) {
1301 dev_err(&intf->dev, "can't allocate %s\n", "device");
1302 goto out;
1303 }
1304
1305 pegasus = netdev_priv(net);
1306 memset(pegasus, 0, sizeof (struct pegasus));
1307 pegasus->dev_index = dev_index;
1308 init_waitqueue_head(&pegasus->ctrl_wait);
1309
1310 if (!alloc_urbs(pegasus)) {
1311 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1312 goto out1;
1313 }
1314
1315 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1316
1317 INIT_WORK(&pegasus->carrier_check, check_carrier, pegasus);
1318
1319 pegasus->intf = intf;
1320 pegasus->usb = dev;
1321 pegasus->net = net;
1322 SET_MODULE_OWNER(net);
1323 net->open = pegasus_open;
1324 net->stop = pegasus_close;
1325 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1326 net->tx_timeout = pegasus_tx_timeout;
1327 net->do_ioctl = pegasus_ioctl;
1328 net->hard_start_xmit = pegasus_start_xmit;
1329 net->set_multicast_list = pegasus_set_multicast;
1330 net->get_stats = pegasus_netdev_stats;
1331 SET_ETHTOOL_OPS(net, &ops);
1332 pegasus->mii.dev = net;
1333 pegasus->mii.mdio_read = mdio_read;
1334 pegasus->mii.mdio_write = mdio_write;
1335 pegasus->mii.phy_id_mask = 0x1f;
1336 pegasus->mii.reg_num_mask = 0x1f;
1337 spin_lock_init(&pegasus->rx_pool_lock);
1338 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1339 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1340
1341 pegasus->features = usb_dev_id[dev_index].private;
1342 get_interrupt_interval(pegasus);
1343 if (reset_mac(pegasus)) {
1344 dev_err(&intf->dev, "can't reset MAC\n");
1345 res = -EIO;
1346 goto out2;
1347 }
1348 set_ethernet_addr(pegasus);
1349 fill_skb_pool(pegasus);
1350 if (pegasus->features & PEGASUS_II) {
1351 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1352 setup_pegasus_II(pegasus);
1353 }
1354 pegasus->phy = mii_phy_probe(pegasus);
1355 if (pegasus->phy == 0xff) {
1356 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1357 pegasus->phy = 1;
1358 }
1359 pegasus->mii.phy_id = pegasus->phy;
1360 usb_set_intfdata(intf, pegasus);
1361 SET_NETDEV_DEV(net, &intf->dev);
1362 pegasus_reset_wol(net);
1363 res = register_netdev(net);
1364 if (res)
1365 goto out3;
1366 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1367 CARRIER_CHECK_DELAY);
1368
1369 dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n",
1370 net->name,
1371 usb_dev_id[dev_index].name,
1372 net->dev_addr [0], net->dev_addr [1],
1373 net->dev_addr [2], net->dev_addr [3],
1374 net->dev_addr [4], net->dev_addr [5]);
1375 return 0;
1376
1377out3:
1378 usb_set_intfdata(intf, NULL);
1379 free_skb_pool(pegasus);
1380out2:
1381 free_all_urbs(pegasus);
1382out1:
1383 free_netdev(net);
1384out:
1385 usb_put_dev(dev);
1386 return res;
1387}
1388
1389static void pegasus_disconnect(struct usb_interface *intf)
1390{
1391 struct pegasus *pegasus = usb_get_intfdata(intf);
1392
1393 usb_set_intfdata(intf, NULL);
1394 if (!pegasus) {
1395 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1396 return;
1397 }
1398
1399 pegasus->flags |= PEGASUS_UNPLUG;
1400 cancel_delayed_work(&pegasus->carrier_check);
1401 unregister_netdev(pegasus->net);
1402 usb_put_dev(interface_to_usbdev(intf));
a85a46f2 1403 unlink_all_urbs(pegasus);
1da177e4
LT		 1404 free_all_urbs(pegasus);
1405 free_skb_pool(pegasus);
1406 if (pegasus->rx_skb)
1407 dev_kfree_skb(pegasus->rx_skb);
1408 free_netdev(pegasus->net);
1409}
1410
27d72e85 1411static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1da177e4
LT		 1412{
1413 struct pegasus *pegasus = usb_get_intfdata(intf);
1414
1415 netif_device_detach (pegasus->net);
7e713b82 1416 cancel_delayed_work(&pegasus->carrier_check);
27d72e85 1417 if (netif_running(pegasus->net)) {
27d72e85
DB		 1418 usb_kill_urb(pegasus->rx_urb);
1419 usb_kill_urb(pegasus->intr_urb);
1420 }
1da177e4
LT		 1421 return 0;
1422}
1423
1424static int pegasus_resume (struct usb_interface *intf)
1425{
1426 struct pegasus *pegasus = usb_get_intfdata(intf);
1427
1428 netif_device_attach (pegasus->net);
27d72e85
DB		 1429 if (netif_running(pegasus->net)) {
1430 pegasus->rx_urb->status = 0;
1431 pegasus->rx_urb->actual_length = 0;
9727d04a 1432 read_bulk_callback(pegasus->rx_urb, NULL);
27d72e85
DB		 1433
1434 pegasus->intr_urb->status = 0;
1435 pegasus->intr_urb->actual_length = 0;
9727d04a 1436 intr_callback(pegasus->intr_urb, NULL);
27d72e85 1437 }
7e713b82
DB		 1438 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1439 CARRIER_CHECK_DELAY);
1da177e4
LT		 1440 return 0;
1441}
1442
1443static struct usb_driver pegasus_driver = {
1444 .name = driver_name,
1445 .probe = pegasus_probe,
1446 .disconnect = pegasus_disconnect,
1447 .id_table = pegasus_ids,
1448 .suspend = pegasus_suspend,
1449 .resume = pegasus_resume,
1450};
1451
a4f81a61
Y		 1452static void parse_id(char *id)
1453{
1454 unsigned int vendor_id=0, device_id=0, flags=0, i=0;
1455 char *token, *name=NULL;
1456
1457 if ((token = strsep(&id, ":")) != NULL)
1458 name = token;
1459 /* name now points to a null terminated string*/
1460 if ((token = strsep(&id, ":")) != NULL)
1461 vendor_id = simple_strtoul(token, NULL, 16);
1462 if ((token = strsep(&id, ":")) != NULL)
1463 device_id = simple_strtoul(token, NULL, 16);
1464 flags = simple_strtoul(id, NULL, 16);
1465 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1466 driver_name, name, vendor_id, device_id, flags);
1467
1468 if (vendor_id > 0x10000 || vendor_id == 0)
1469 return;
1470 if (device_id > 0x10000 || device_id == 0)
1471 return;
1472
1473 for (i=0; usb_dev_id[i].name; i++);
1474 usb_dev_id[i].name = name;
1475 usb_dev_id[i].vendor = vendor_id;
1476 usb_dev_id[i].device = device_id;
1477 usb_dev_id[i].private = flags;
1478 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1479 pegasus_ids[i].idVendor = vendor_id;
1480 pegasus_ids[i].idProduct = device_id;
1481}
1482
1da177e4
LT		 1483static int __init pegasus_init(void)
1484{
1485 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
a4f81a61
Y		 1486 if (devid)
1487 parse_id(devid);
1da177e4
LT		 1488 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1489 if (!pegasus_workqueue)
1490 return -ENOMEM;
1491 return usb_register(&pegasus_driver);
1492}
1493
1494static void __exit pegasus_exit(void)
1495{
1496 destroy_workqueue(pegasus_workqueue);
1497 usb_deregister(&pegasus_driver);
1498}
1499
1500module_init(pegasus_init);
1501module_exit(pegasus_exit);
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