projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[PATCH] USB: file-storage gadget: Add reference count for children
[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 */
48#define DRIVER_VERSION "v0.6.12 (2005/01/13)"
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;
1da177e4
LT		 60
61static struct usb_eth_dev usb_dev_id[] = {
62#define PEGASUS_DEV(pn, vid, pid, flags) \
63 {.name = pn, .vendor = vid, .device = pid, .private = flags},
64#include "pegasus.h"
65#undef PEGASUS_DEV
66 {NULL, 0, 0, 0}
67};
68
69static struct usb_device_id pegasus_ids[] = {
70#define PEGASUS_DEV(pn, vid, pid, flags) \
71 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
72#include "pegasus.h"
73#undef PEGASUS_DEV
74 {}
75};
76
77MODULE_AUTHOR(DRIVER_AUTHOR);
78MODULE_DESCRIPTION(DRIVER_DESC);
79MODULE_LICENSE("GPL");
80module_param(loopback, bool, 0);
81module_param(mii_mode, bool, 0);
82MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
83MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
84
85/* use ethtool to change the level for any given device */
86static int msg_level = -1;
87module_param (msg_level, int, 0);
88MODULE_PARM_DESC (msg_level, "Override default message level");
89
90MODULE_DEVICE_TABLE(usb, pegasus_ids);
91
92static int update_eth_regs_async(pegasus_t *);
93/* Aargh!!! I _really_ hate such tweaks */
94static void ctrl_callback(struct urb *urb, struct pt_regs *regs)
95{
96 pegasus_t *pegasus = urb->context;
97
98 if (!pegasus)
99 return;
100
101 switch (urb->status) {
102 case 0:
103 if (pegasus->flags & ETH_REGS_CHANGE) {
104 pegasus->flags &= ~ETH_REGS_CHANGE;
105 pegasus->flags |= ETH_REGS_CHANGED;
106 update_eth_regs_async(pegasus);
107 return;
108 }
109 break;
110 case -EINPROGRESS:
111 return;
112 case -ENOENT:
113 break;
114 default:
115 if (netif_msg_drv(pegasus))
116 dev_err(&pegasus->intf->dev, "%s, status %d\n",
117 __FUNCTION__, urb->status);
118 }
119 pegasus->flags &= ~ETH_REGS_CHANGED;
120 wake_up(&pegasus->ctrl_wait);
121}
122
123static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
124 void *data)
125{
126 int ret;
127 char *buffer;
128 DECLARE_WAITQUEUE(wait, current);
129
130 buffer = kmalloc(size, GFP_KERNEL);
131 if (!buffer) {
132 if (netif_msg_drv(pegasus))
133 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
134 __FUNCTION__);
135 return -ENOMEM;
136 }
137 add_wait_queue(&pegasus->ctrl_wait, &wait);
138 set_current_state(TASK_UNINTERRUPTIBLE);
139 while (pegasus->flags & ETH_REGS_CHANGED)
140 schedule();
141 remove_wait_queue(&pegasus->ctrl_wait, &wait);
142 set_current_state(TASK_RUNNING);
143
144 pegasus->dr.bRequestType = PEGASUS_REQT_READ;
145 pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
146 pegasus->dr.wValue = cpu_to_le16(0);
147 pegasus->dr.wIndex = cpu_to_le16p(&indx);
148 pegasus->dr.wLength = cpu_to_le16p(&size);
149 pegasus->ctrl_urb->transfer_buffer_length = size;
150
151 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
152 usb_rcvctrlpipe(pegasus->usb, 0),
153 (char *) &pegasus->dr,
154 buffer, size, ctrl_callback, pegasus);
155
156 add_wait_queue(&pegasus->ctrl_wait, &wait);
157 set_current_state(TASK_UNINTERRUPTIBLE);
158
159 /* using ATOMIC, we'd never wake up if we slept */
160 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
161 if (netif_msg_drv(pegasus))
162 dev_err(&pegasus->intf->dev, "%s, status %d\n",
163 __FUNCTION__, ret);
164 goto out;
165 }
166
167 schedule();
168out:
169 remove_wait_queue(&pegasus->ctrl_wait, &wait);
170 memcpy(data, buffer, size);
171 kfree(buffer);
172
173 return ret;
174}
175
176static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
177 void *data)
178{
179 int ret;
180 char *buffer;
181 DECLARE_WAITQUEUE(wait, current);
182
183 buffer = kmalloc(size, GFP_KERNEL);
184 if (!buffer) {
185 if (netif_msg_drv(pegasus))
186 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
187 __FUNCTION__);
188 return -ENOMEM;
189 }
190 memcpy(buffer, data, size);
191
192 add_wait_queue(&pegasus->ctrl_wait, &wait);
193 set_current_state(TASK_UNINTERRUPTIBLE);
194 while (pegasus->flags & ETH_REGS_CHANGED)
195 schedule();
196 remove_wait_queue(&pegasus->ctrl_wait, &wait);
197 set_current_state(TASK_RUNNING);
198
199 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
200 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
201 pegasus->dr.wValue = cpu_to_le16(0);
202 pegasus->dr.wIndex = cpu_to_le16p(&indx);
203 pegasus->dr.wLength = cpu_to_le16p(&size);
204 pegasus->ctrl_urb->transfer_buffer_length = size;
205
206 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
207 usb_sndctrlpipe(pegasus->usb, 0),
208 (char *) &pegasus->dr,
209 buffer, size, ctrl_callback, pegasus);
210
211 add_wait_queue(&pegasus->ctrl_wait, &wait);
212 set_current_state(TASK_UNINTERRUPTIBLE);
213
214 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
215 if (netif_msg_drv(pegasus))
216 dev_err(&pegasus->intf->dev, "%s, status %d\n",
217 __FUNCTION__, ret);
218 goto out;
219 }
220
221 schedule();
222out:
223 remove_wait_queue(&pegasus->ctrl_wait, &wait);
224 kfree(buffer);
225
226 return ret;
227}
228
229static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
230{
231 int ret;
232 char *tmp;
233 DECLARE_WAITQUEUE(wait, current);
234
235 tmp = kmalloc(1, GFP_KERNEL);
236 if (!tmp) {
237 if (netif_msg_drv(pegasus))
238 dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
239 __FUNCTION__);
240 return -ENOMEM;
241 }
242 memcpy(tmp, &data, 1);
243 add_wait_queue(&pegasus->ctrl_wait, &wait);
244 set_current_state(TASK_UNINTERRUPTIBLE);
245 while (pegasus->flags & ETH_REGS_CHANGED)
246 schedule();
247 remove_wait_queue(&pegasus->ctrl_wait, &wait);
248 set_current_state(TASK_RUNNING);
249
250 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
251 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
252 pegasus->dr.wValue = cpu_to_le16(data);
253 pegasus->dr.wIndex = cpu_to_le16p(&indx);
254 pegasus->dr.wLength = cpu_to_le16(1);
255 pegasus->ctrl_urb->transfer_buffer_length = 1;
256
257 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
258 usb_sndctrlpipe(pegasus->usb, 0),
259 (char *) &pegasus->dr,
260 &tmp, 1, ctrl_callback, pegasus);
261
262 add_wait_queue(&pegasus->ctrl_wait, &wait);
263 set_current_state(TASK_UNINTERRUPTIBLE);
264
265 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
266 if (netif_msg_drv(pegasus))
267 dev_err(&pegasus->intf->dev, "%s, status %d\n",
268 __FUNCTION__, ret);
269 goto out;
270 }
271
272 schedule();
273out:
274 remove_wait_queue(&pegasus->ctrl_wait, &wait);
275 kfree(tmp);
276
277 return ret;
278}
279
280static int update_eth_regs_async(pegasus_t * pegasus)
281{
282 int ret;
283
284 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
285 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
286 pegasus->dr.wValue = 0;
287 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
288 pegasus->dr.wLength = cpu_to_le16(3);
289 pegasus->ctrl_urb->transfer_buffer_length = 3;
290
291 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
292 usb_sndctrlpipe(pegasus->usb, 0),
293 (char *) &pegasus->dr,
294 pegasus->eth_regs, 3, ctrl_callback, pegasus);
295
296 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC)))
297 if (netif_msg_drv(pegasus))
298 dev_err(&pegasus->intf->dev, "%s, status %d\n",
299 __FUNCTION__, ret);
300
301 return ret;
302}
303
304static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
305{
306 int i;
307 __u8 data[4] = { phy, 0, 0, indx };
308 __le16 regdi;
309 int ret;
310
311 ret = set_register(pegasus, PhyCtrl, 0);
312 ret = set_registers(pegasus, PhyAddr, sizeof (data), data);
313 ret = set_register(pegasus, PhyCtrl, (indx | PHY_READ));
314 for (i = 0; i < REG_TIMEOUT; i++) {
315 ret = get_registers(pegasus, PhyCtrl, 1, data);
316 if (data[0] & PHY_DONE)
317 break;
318 }
319 if (i < REG_TIMEOUT) {
320 ret = get_registers(pegasus, PhyData, 2, &regdi);
321 *regd = le16_to_cpu(regdi);
322 return 1;
323 }
324 if (netif_msg_drv(pegasus))
325 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
326
327 return 0;
328}
329
330static int mdio_read(struct net_device *dev, int phy_id, int loc)
331{
332 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
333 u16 res;
334
335 read_mii_word(pegasus, phy_id, loc, &res);
336 return (int)res;
337}
338
339static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
340{
341 int i;
342 __u8 data[4] = { phy, 0, 0, indx };
343 int ret;
344
345 data[1] = (u8) regd;
346 data[2] = (u8) (regd >> 8);
347 ret = set_register(pegasus, PhyCtrl, 0);
348 ret = set_registers(pegasus, PhyAddr, sizeof(data), data);
349 ret = set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
350 for (i = 0; i < REG_TIMEOUT; i++) {
351 ret = get_registers(pegasus, PhyCtrl, 1, data);
352 if (data[0] & PHY_DONE)
353 break;
354 }
355 if (i < REG_TIMEOUT)
356 return 0;
357
358 if (netif_msg_drv(pegasus))
359 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
360 return 1;
361}
362
363static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
364{
365 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
366
367 write_mii_word(pegasus, phy_id, loc, val);
368}
369
370static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
371{
372 int i;
373 __u8 tmp;
374 __le16 retdatai;
375 int ret;
376
377 ret = set_register(pegasus, EpromCtrl, 0);
378 ret = set_register(pegasus, EpromOffset, index);
379 ret = set_register(pegasus, EpromCtrl, EPROM_READ);
380
381 for (i = 0; i < REG_TIMEOUT; i++) {
382 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
383 if (tmp & EPROM_DONE)
384 break;
385 }
386 if (i < REG_TIMEOUT) {
387 ret = get_registers(pegasus, EpromData, 2, &retdatai);
388 *retdata = le16_to_cpu(retdatai);
389 return 0;
390 }
391
392 if (netif_msg_drv(pegasus))
393 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
394 return -1;
395}
396
397#ifdef PEGASUS_WRITE_EEPROM
398static inline void enable_eprom_write(pegasus_t * pegasus)
399{
400 __u8 tmp;
401 int ret;
402
403 ret = get_registers(pegasus, EthCtrl2, 1, &tmp);
404 ret = set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
405}
406
407static inline void disable_eprom_write(pegasus_t * pegasus)
408{
409 __u8 tmp;
410 int ret;
411
412 ret = get_registers(pegasus, EthCtrl2, 1, &tmp);
413 ret = set_register(pegasus, EpromCtrl, 0);
414 ret = set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
415}
416
417static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
418{
419 int i;
420 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
421 int ret;
422
423 ret = set_registers(pegasus, EpromOffset, 4, d);
424 enable_eprom_write(pegasus);
425 ret = set_register(pegasus, EpromOffset, index);
426 ret = set_registers(pegasus, EpromData, 2, &data);
427 ret = set_register(pegasus, EpromCtrl, EPROM_WRITE);
428
429 for (i = 0; i < REG_TIMEOUT; i++) {
430 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
431 if (tmp & EPROM_DONE)
432 break;
433 }
434 disable_eprom_write(pegasus);
435 if (i < REG_TIMEOUT)
436 return 0;
437 if (netif_msg_drv(pegasus))
438 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
439 return -1;
440}
441#endif /* PEGASUS_WRITE_EEPROM */
442
443static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
444{
445 int i;
446 __u16 w16;
447
448 for (i = 0; i < 3; i++) {
449 read_eprom_word(pegasus, i, &w16);
450 ((__le16 *) id)[i] = cpu_to_le16p(&w16);
451 }
452}
453
454static void set_ethernet_addr(pegasus_t * pegasus)
455{
456 __u8 node_id[6];
457 int ret;
458
459 get_node_id(pegasus, node_id);
460 ret = set_registers(pegasus, EthID, sizeof (node_id), node_id);
461 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
462}
463
464static inline int reset_mac(pegasus_t * pegasus)
465{
466 __u8 data = 0x8;
467 int i;
468 int ret;
469
470 ret = set_register(pegasus, EthCtrl1, data);
471 for (i = 0; i < REG_TIMEOUT; i++) {
472 ret = get_registers(pegasus, EthCtrl1, 1, &data);
473 if (~data & 0x08) {
474 if (loopback & 1)
475 break;
476 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
477 ret = set_register(pegasus, Gpio1, 0x34);
478 else
479 ret = set_register(pegasus, Gpio1, 0x26);
480 ret = set_register(pegasus, Gpio0, pegasus->features);
481 ret = set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
482 break;
483 }
484 }
485 if (i == REG_TIMEOUT)
486 return 1;
487
488 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
489 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
490 ret = set_register(pegasus, Gpio0, 0x24);
491 ret = set_register(pegasus, Gpio0, 0x26);
492 }
493 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
494 __u16 auxmode;
495 read_mii_word(pegasus, 3, 0x1b, &auxmode);
496 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
497 }
498
499 return 0;
500}
501
502static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
503{
504 __u16 linkpart;
505 __u8 data[4];
506 pegasus_t *pegasus = netdev_priv(dev);
507 int ret;
508
509 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
510 data[0] = 0xc9;
511 data[1] = 0;
512 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
513 data[1] |= 0x20; /* set full duplex */
514 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
515 data[1] |= 0x10; /* set 100 Mbps */
516 if (mii_mode)
517 data[1] = 0;
518 data[2] = (loopback & 1) ? 0x09 : 0x01;
519
520 memcpy(pegasus->eth_regs, data, sizeof (data));
521 ret = set_registers(pegasus, EthCtrl0, 3, data);
522
523 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
524 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
525 u16 auxmode;
526 read_mii_word(pegasus, 0, 0x1b, &auxmode);
527 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
528 }
529
530 return 0;
531}
532
533static void fill_skb_pool(pegasus_t * pegasus)
534{
535 int i;
536
537 for (i = 0; i < RX_SKBS; i++) {
538 if (pegasus->rx_pool[i])
539 continue;
540 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
541 /*
542 ** we give up if the allocation fail. the tasklet will be
543 ** rescheduled again anyway...
544 */
545 if (pegasus->rx_pool[i] == NULL)
546 return;
547 pegasus->rx_pool[i]->dev = pegasus->net;
548 skb_reserve(pegasus->rx_pool[i], 2);
549 }
550}
551
552static void free_skb_pool(pegasus_t * pegasus)
553{
554 int i;
555
556 for (i = 0; i < RX_SKBS; i++) {
557 if (pegasus->rx_pool[i]) {
558 dev_kfree_skb(pegasus->rx_pool[i]);
559 pegasus->rx_pool[i] = NULL;
560 }
561 }
562}
563
564static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
565{
566 int i;
567 struct sk_buff *skb;
568
569 for (i = 0; i < RX_SKBS; i++) {
570 if (likely(pegasus->rx_pool[i] != NULL)) {
571 skb = pegasus->rx_pool[i];
572 pegasus->rx_pool[i] = NULL;
573 return skb;
574 }
575 }
576 return NULL;
577}
578
579static void read_bulk_callback(struct urb *urb, struct pt_regs *regs)
580{
581 pegasus_t *pegasus = urb->context;
582 struct net_device *net;
583 int rx_status, count = urb->actual_length;
584 u8 *buf = urb->transfer_buffer;
585 __u16 pkt_len;
586
587 if (!pegasus)
588 return;
589
590 net = pegasus->net;
591 if (!netif_device_present(net) || !netif_running(net))
592 return;
593
594 switch (urb->status) {
595 case 0:
596 break;
597 case -ETIMEDOUT:
598 if (netif_msg_rx_err(pegasus))
599 pr_debug("%s: reset MAC\n", net->name);
600 pegasus->flags &= ~PEGASUS_RX_BUSY;
601 break;
602 case -EPIPE: /* stall, or disconnect from TT */
603 /* FIXME schedule work to clear the halt */
604 if (netif_msg_rx_err(pegasus))
605 printk(KERN_WARNING "%s: no rx stall recovery\n",
606 net->name);
607 return;
608 case -ENOENT:
609 case -ECONNRESET:
610 case -ESHUTDOWN:
611 if (netif_msg_ifdown(pegasus))
612 pr_debug("%s: rx unlink, %d\n", net->name, urb->status);
613 return;
614 default:
615 if (netif_msg_rx_err(pegasus))
616 pr_debug("%s: RX status %d\n", net->name, urb->status);
617 goto goon;
618 }
619
620 if (!count || count < 4)
621 goto goon;
622
623 rx_status = buf[count - 2];
624 if (rx_status & 0x1e) {
625 if (netif_msg_rx_err(pegasus))
626 pr_debug("%s: RX packet error %x\n",
627 net->name, rx_status);
628 pegasus->stats.rx_errors++;
629 if (rx_status & 0x06) // long or runt
630 pegasus->stats.rx_length_errors++;
631 if (rx_status & 0x08)
632 pegasus->stats.rx_crc_errors++;
633 if (rx_status & 0x10) // extra bits
634 pegasus->stats.rx_frame_errors++;
635 goto goon;
636 }
637 if (pegasus->chip == 0x8513) {
638 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
639 pkt_len &= 0x0fff;
640 pegasus->rx_skb->data += 2;
641 } else {
642 pkt_len = buf[count - 3] << 8;
643 pkt_len += buf[count - 4];
644 pkt_len &= 0xfff;
645 pkt_len -= 8;
646 }
647
a85a46f2
KV		 648 /*
649 * If the packet is unreasonably long, quietly drop it rather than
650 * kernel panicing by calling skb_put.
651 */
652 if (pkt_len > PEGASUS_MTU)
653 goto goon;
654
1da177e4
LT		 655 /*
656 * at this point we are sure pegasus->rx_skb != NULL
657 * so we go ahead and pass up the packet.
658 */
659 skb_put(pegasus->rx_skb, pkt_len);
660 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
661 netif_rx(pegasus->rx_skb);
662 pegasus->stats.rx_packets++;
663 pegasus->stats.rx_bytes += pkt_len;
664
665 if (pegasus->flags & PEGASUS_UNPLUG)
666 return;
667
668 spin_lock(&pegasus->rx_pool_lock);
669 pegasus->rx_skb = pull_skb(pegasus);
670 spin_unlock(&pegasus->rx_pool_lock);
671
672 if (pegasus->rx_skb == NULL)
673 goto tl_sched;
674goon:
675 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
676 usb_rcvbulkpipe(pegasus->usb, 1),
677 pegasus->rx_skb->data, PEGASUS_MTU + 8,
678 read_bulk_callback, pegasus);
679 if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
680 pegasus->flags |= PEGASUS_RX_URB_FAIL;
681 goto tl_sched;
682 } else {
683 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
684 }
685
686 return;
687
688tl_sched:
689 tasklet_schedule(&pegasus->rx_tl);
690}
691
692static void rx_fixup(unsigned long data)
693{
694 pegasus_t *pegasus;
695 unsigned long flags;
696
697 pegasus = (pegasus_t *) data;
698 if (pegasus->flags & PEGASUS_UNPLUG)
699 return;
700
701 spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
702 fill_skb_pool(pegasus);
703 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
704 if (pegasus->rx_skb)
705 goto try_again;
706 if (pegasus->rx_skb == NULL) {
707 pegasus->rx_skb = pull_skb(pegasus);
708 }
709 if (pegasus->rx_skb == NULL) {
710 if (netif_msg_rx_err(pegasus))
711 printk(KERN_WARNING "%s: low on memory\n",
712 pegasus->net->name);
713 tasklet_schedule(&pegasus->rx_tl);
714 goto done;
715 }
716 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
717 usb_rcvbulkpipe(pegasus->usb, 1),
718 pegasus->rx_skb->data, PEGASUS_MTU + 8,
719 read_bulk_callback, pegasus);
720try_again:
721 if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
722 pegasus->flags |= PEGASUS_RX_URB_FAIL;
723 tasklet_schedule(&pegasus->rx_tl);
724 } else {
725 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
726 }
727done:
728 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
729}
730
731static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
732{
733 pegasus_t *pegasus = urb->context;
734 struct net_device *net = pegasus->net;
735
736 if (!pegasus)
737 return;
738
739 if (!netif_device_present(net) || !netif_running(net))
740 return;
741
742 switch (urb->status) {
743 case -EPIPE:
744 /* FIXME schedule_work() to clear the tx halt */
745 netif_stop_queue(net);
746 if (netif_msg_tx_err(pegasus))
747 printk(KERN_WARNING "%s: no tx stall recovery\n",
748 net->name);
749 return;
750 case -ENOENT:
751 case -ECONNRESET:
752 case -ESHUTDOWN:
753 if (netif_msg_ifdown(pegasus))
754 pr_debug("%s: tx unlink, %d\n", net->name, urb->status);
755 return;
756 default:
757 if (netif_msg_tx_err(pegasus))
758 pr_info("%s: TX status %d\n", net->name, urb->status);
759 /* FALL THROUGH */
760 case 0:
761 break;
762 }
763
764 net->trans_start = jiffies;
765 netif_wake_queue(net);
766}
767
768static void intr_callback(struct urb *urb, struct pt_regs *regs)
769{
770 pegasus_t *pegasus = urb->context;
771 struct net_device *net;
772 int status;
773
774 if (!pegasus)
775 return;
776 net = pegasus->net;
777
778 switch (urb->status) {
779 case 0:
780 break;
781 case -ECONNRESET: /* unlink */
782 case -ENOENT:
783 case -ESHUTDOWN:
784 return;
785 default:
786 /* some Pegasus-I products report LOTS of data
787 * toggle errors... avoid log spamming
788 */
789 if (netif_msg_timer(pegasus))
790 pr_debug("%s: intr status %d\n", net->name,
791 urb->status);
792 }
793
794 if (urb->actual_length >= 6) {
795 u8 * d = urb->transfer_buffer;
796
797 /* byte 0 == tx_status1, reg 2B */
798 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
799 |LATE_COL|JABBER_TIMEOUT)) {
800 pegasus->stats.tx_errors++;
801 if (d[0] & TX_UNDERRUN)
802 pegasus->stats.tx_fifo_errors++;
803 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
804 pegasus->stats.tx_aborted_errors++;
805 if (d[0] & LATE_COL)
806 pegasus->stats.tx_window_errors++;
807 }
808
809 /* d[5].LINK_STATUS lies on some adapters.
810 * d[0].NO_CARRIER kicks in only with failed TX.
811 * ... so monitoring with MII may be safest.
812 */
813 if (d[0] & NO_CARRIER)
814 netif_carrier_off(net);
815 else
816 netif_carrier_on(net);
817
818 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
819 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
820 }
821
822 status = usb_submit_urb(urb, SLAB_ATOMIC);
823 if (status && netif_msg_timer(pegasus))
824 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
825 net->name, status);
826}
827
828static void pegasus_tx_timeout(struct net_device *net)
829{
830 pegasus_t *pegasus = netdev_priv(net);
831 if (netif_msg_timer(pegasus))
832 printk(KERN_WARNING "%s: tx timeout\n", net->name);
1da177e4
LT		 833 usb_unlink_urb(pegasus->tx_urb);
834 pegasus->stats.tx_errors++;
835}
836
837static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
838{
839 pegasus_t *pegasus = netdev_priv(net);
840 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
841 int res;
842 __u16 l16 = skb->len;
843
844 netif_stop_queue(net);
845
846 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
847 memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
848 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
849 usb_sndbulkpipe(pegasus->usb, 2),
850 pegasus->tx_buff, count,
851 write_bulk_callback, pegasus);
852 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
853 if (netif_msg_tx_err(pegasus))
854 printk(KERN_WARNING "%s: fail tx, %d\n",
855 net->name, res);
856 switch (res) {
857 case -EPIPE: /* stall, or disconnect from TT */
858 /* cleanup should already have been scheduled */
859 break;
860 case -ENODEV: /* disconnect() upcoming */
861 break;
862 default:
863 pegasus->stats.tx_errors++;
864 netif_start_queue(net);
865 }
866 } else {
867 pegasus->stats.tx_packets++;
868 pegasus->stats.tx_bytes += skb->len;
869 net->trans_start = jiffies;
870 }
871 dev_kfree_skb(skb);
872
873 return 0;
874}
875
876static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
877{
878 return &((pegasus_t *) netdev_priv(dev))->stats;
879}
880
881static inline void disable_net_traffic(pegasus_t * pegasus)
882{
883 int tmp = 0;
884 int ret;
885
886 ret = set_registers(pegasus, EthCtrl0, 2, &tmp);
887}
888
889static inline void get_interrupt_interval(pegasus_t * pegasus)
890{
891 __u8 data[2];
892
893 read_eprom_word(pegasus, 4, (__u16 *) data);
a85a46f2
KV		 894 if (pegasus->usb->speed != USB_SPEED_HIGH) {
895 if (data[1] < 0x80) {
896 if (netif_msg_timer(pegasus))
897 dev_info(&pegasus->intf->dev, "intr interval "
898 "changed from %ums to %ums\n",
899 data[1], 0x80);
900 data[1] = 0x80;
901#ifdef PEGASUS_WRITE_EEPROM
902 write_eprom_word(pegasus, 4, *(__u16 *) data);
1da177e4 903#endif
a85a46f2 904 }
1da177e4
LT		 905 }
906 pegasus->intr_interval = data[1];
907}
908
909static void set_carrier(struct net_device *net)
910{
911 pegasus_t *pegasus = netdev_priv(net);
912 u16 tmp;
913
a85a46f2 914 if (!read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
1da177e4 915 return;
a85a46f2 916
1da177e4
LT		 917 if (tmp & BMSR_LSTATUS)
918 netif_carrier_on(net);
919 else
920 netif_carrier_off(net);
921}
922
923static void free_all_urbs(pegasus_t * pegasus)
924{
925 usb_free_urb(pegasus->intr_urb);
926 usb_free_urb(pegasus->tx_urb);
927 usb_free_urb(pegasus->rx_urb);
928 usb_free_urb(pegasus->ctrl_urb);
929}
930
931static void unlink_all_urbs(pegasus_t * pegasus)
932{
933 usb_kill_urb(pegasus->intr_urb);
934 usb_kill_urb(pegasus->tx_urb);
935 usb_kill_urb(pegasus->rx_urb);
936 usb_kill_urb(pegasus->ctrl_urb);
937}
938
939static int alloc_urbs(pegasus_t * pegasus)
940{
941 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
942 if (!pegasus->ctrl_urb) {
943 return 0;
944 }
945 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
946 if (!pegasus->rx_urb) {
947 usb_free_urb(pegasus->ctrl_urb);
948 return 0;
949 }
950 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
951 if (!pegasus->tx_urb) {
952 usb_free_urb(pegasus->rx_urb);
953 usb_free_urb(pegasus->ctrl_urb);
954 return 0;
955 }
956 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
957 if (!pegasus->intr_urb) {
958 usb_free_urb(pegasus->tx_urb);
959 usb_free_urb(pegasus->rx_urb);
960 usb_free_urb(pegasus->ctrl_urb);
961 return 0;
962 }
963
964 return 1;
965}
966
967static int pegasus_open(struct net_device *net)
968{
969 pegasus_t *pegasus = netdev_priv(net);
970 int res;
971
972 if (pegasus->rx_skb == NULL)
973 pegasus->rx_skb = pull_skb(pegasus);
974 /*
975 ** Note: no point to free the pool. it is empty :-)
976 */
977 if (!pegasus->rx_skb)
978 return -ENOMEM;
979
980 res = set_registers(pegasus, EthID, 6, net->dev_addr);
981
982 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
983 usb_rcvbulkpipe(pegasus->usb, 1),
984 pegasus->rx_skb->data, PEGASUS_MTU + 8,
985 read_bulk_callback, pegasus);
986 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
987 if (netif_msg_ifup(pegasus))
988 pr_debug("%s: failed rx_urb, %d", net->name, res);
989 goto exit;
990 }
991
992 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
993 usb_rcvintpipe(pegasus->usb, 3),
994 pegasus->intr_buff, sizeof (pegasus->intr_buff),
995 intr_callback, pegasus, pegasus->intr_interval);
996 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
997 if (netif_msg_ifup(pegasus))
998 pr_debug("%s: failed intr_urb, %d\n", net->name, res);
999 usb_kill_urb(pegasus->rx_urb);
1000 goto exit;
1001 }
1002 if ((res = enable_net_traffic(net, pegasus->usb))) {
1003 if (netif_msg_ifup(pegasus))
1004 pr_debug("%s: can't enable_net_traffic() - %d\n",
1005 net->name, res);
1006 res = -EIO;
1007 usb_kill_urb(pegasus->rx_urb);
1008 usb_kill_urb(pegasus->intr_urb);
1009 free_skb_pool(pegasus);
1010 goto exit;
1011 }
1012 set_carrier(net);
1013 netif_start_queue(net);
1014 if (netif_msg_ifup(pegasus))
1015 pr_debug("%s: open\n", net->name);
1016 res = 0;
1017exit:
1018 return res;
1019}
1020
1021static int pegasus_close(struct net_device *net)
1022{
1023 pegasus_t *pegasus = netdev_priv(net);
1024
1025 netif_stop_queue(net);
1026 if (!(pegasus->flags & PEGASUS_UNPLUG))
1027 disable_net_traffic(pegasus);
1028 tasklet_kill(&pegasus->rx_tl);
1029 unlink_all_urbs(pegasus);
1030
1031 return 0;
1032}
1033
1034static void pegasus_get_drvinfo(struct net_device *dev,
1035 struct ethtool_drvinfo *info)
1036{
1037 pegasus_t *pegasus = netdev_priv(dev);
1038 strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1039 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1040 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1041}
1042
1043/* also handles three patterns of some kind in hardware */
1044#define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
1045
1046static void
1047pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1048{
1049 pegasus_t *pegasus = netdev_priv(dev);
1050
1051 wol->supported = WAKE_MAGIC | WAKE_PHY;
1052 wol->wolopts = pegasus->wolopts;
1053}
1054
1055static int
1056pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1057{
1058 pegasus_t *pegasus = netdev_priv(dev);
1059 u8 reg78 = 0x04;
1060
1061 if (wol->wolopts & ~WOL_SUPPORTED)
1062 return -EINVAL;
1063
1064 if (wol->wolopts & WAKE_MAGIC)
1065 reg78 |= 0x80;
1066 if (wol->wolopts & WAKE_PHY)
1067 reg78 |= 0x40;
1068 /* FIXME this 0x10 bit still needs to get set in the chip... */
1069 if (wol->wolopts)
1070 pegasus->eth_regs[0] |= 0x10;
1071 else
1072 pegasus->eth_regs[0] &= ~0x10;
1073 pegasus->wolopts = wol->wolopts;
1074 return set_register(pegasus, WakeupControl, reg78);
1075}
1076
1077static inline void pegasus_reset_wol(struct net_device *dev)
1078{
1079 struct ethtool_wolinfo wol;
1080
1081 memset(&wol, 0, sizeof wol);
1082 (void) pegasus_set_wol(dev, &wol);
1083}
1084
1085static int
1086pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1087{
1088 pegasus_t *pegasus;
1089
1090 if (in_atomic())
1091 return 0;
1092
1093 pegasus = netdev_priv(dev);
1094 mii_ethtool_gset(&pegasus->mii, ecmd);
1095
1096 return 0;
1097}
1098
1099static int
1100pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1101{
1102 pegasus_t *pegasus = netdev_priv(dev);
1103 return mii_ethtool_sset(&pegasus->mii, ecmd);
1104}
1105
1106static int pegasus_nway_reset(struct net_device *dev)
1107{
1108 pegasus_t *pegasus = netdev_priv(dev);
1109 return mii_nway_restart(&pegasus->mii);
1110}
1111
1112static u32 pegasus_get_link(struct net_device *dev)
1113{
1114 pegasus_t *pegasus = netdev_priv(dev);
1115 return mii_link_ok(&pegasus->mii);
1116}
1117
1118static u32 pegasus_get_msglevel(struct net_device *dev)
1119{
1120 pegasus_t *pegasus = netdev_priv(dev);
1121 return pegasus->msg_enable;
1122}
1123
1124static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1125{
1126 pegasus_t *pegasus = netdev_priv(dev);
1127 pegasus->msg_enable = v;
1128}
1129
1130static struct ethtool_ops ops = {
1131 .get_drvinfo = pegasus_get_drvinfo,
1132 .get_settings = pegasus_get_settings,
1133 .set_settings = pegasus_set_settings,
1134 .nway_reset = pegasus_nway_reset,
1135 .get_link = pegasus_get_link,
1136 .get_msglevel = pegasus_get_msglevel,
1137 .set_msglevel = pegasus_set_msglevel,
1138 .get_wol = pegasus_get_wol,
1139 .set_wol = pegasus_set_wol,
1140};
1141
1142static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1143{
1144 __u16 *data = (__u16 *) & rq->ifr_ifru;
1145 pegasus_t *pegasus = netdev_priv(net);
1146 int res;
1147
1148 switch (cmd) {
1149 case SIOCDEVPRIVATE:
1150 data[0] = pegasus->phy;
1151 case SIOCDEVPRIVATE + 1:
1152 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1153 res = 0;
1154 break;
1155 case SIOCDEVPRIVATE + 2:
1156 if (!capable(CAP_NET_ADMIN))
1157 return -EPERM;
1158 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1159 res = 0;
1160 break;
1161 default:
1162 res = -EOPNOTSUPP;
1163 }
1164 return res;
1165}
1166
1167static void pegasus_set_multicast(struct net_device *net)
1168{
1169 pegasus_t *pegasus = netdev_priv(net);
1170
1171 if (net->flags & IFF_PROMISC) {
1172 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1173 if (netif_msg_link(pegasus))
1174 pr_info("%s: Promiscuous mode enabled.\n", net->name);
ae0a97bf 1175 } else if (net->mc_count ||
1da177e4
LT		 1176 (net->flags & IFF_ALLMULTI)) {
1177 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1178 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1179 if (netif_msg_link(pegasus))
1180 pr_info("%s: set allmulti\n", net->name);
1181 } else {
1182 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1183 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1184 }
1185
1186 pegasus->flags |= ETH_REGS_CHANGE;
1187 ctrl_callback(pegasus->ctrl_urb, NULL);
1188}
1189
1190static __u8 mii_phy_probe(pegasus_t * pegasus)
1191{
1192 int i;
1193 __u16 tmp;
1194
1195 for (i = 0; i < 32; i++) {
1196 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1197 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1198 continue;
1199 else
1200 return i;
1201 }
1202
1203 return 0xff;
1204}
1205
1206static inline void setup_pegasus_II(pegasus_t * pegasus)
1207{
1208 __u8 data = 0xa5;
1209 int ret;
1210
1211 ret = set_register(pegasus, Reg1d, 0);
1212 ret = set_register(pegasus, Reg7b, 1);
1213 mdelay(100);
1214 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1215 ret = set_register(pegasus, Reg7b, 0);
1216 else
1217 ret = set_register(pegasus, Reg7b, 2);
1218
1219 ret = set_register(pegasus, 0x83, data);
1220 ret = get_registers(pegasus, 0x83, 1, &data);
1221
1222 if (data == 0xa5) {
1223 pegasus->chip = 0x8513;
1224 } else {
1225 pegasus->chip = 0;
1226 }
1227
1228 ret = set_register(pegasus, 0x80, 0xc0);
1229 ret = set_register(pegasus, 0x83, 0xff);
1230 ret = set_register(pegasus, 0x84, 0x01);
1231
1232 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1233 ret = set_register(pegasus, Reg81, 6);
1234 else
1235 ret = set_register(pegasus, Reg81, 2);
1236}
1237
1238
1239static struct workqueue_struct *pegasus_workqueue = NULL;
1240#define CARRIER_CHECK_DELAY (2 * HZ)
1241
1242static void check_carrier(void *data)
1243{
1244 pegasus_t *pegasus = data;
1245 set_carrier(pegasus->net);
1246 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1247 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1248 CARRIER_CHECK_DELAY);
1249 }
1250}
1251
1252static int pegasus_probe(struct usb_interface *intf,
1253 const struct usb_device_id *id)
1254{
1255 struct usb_device *dev = interface_to_usbdev(intf);
1256 struct net_device *net;
1257 pegasus_t *pegasus;
1258 int dev_index = id - pegasus_ids;
1259 int res = -ENOMEM;
1260
1261 usb_get_dev(dev);
1262 net = alloc_etherdev(sizeof(struct pegasus));
1263 if (!net) {
1264 dev_err(&intf->dev, "can't allocate %s\n", "device");
1265 goto out;
1266 }
1267
1268 pegasus = netdev_priv(net);
1269 memset(pegasus, 0, sizeof (struct pegasus));
1270 pegasus->dev_index = dev_index;
1271 init_waitqueue_head(&pegasus->ctrl_wait);
1272
1273 if (!alloc_urbs(pegasus)) {
1274 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1275 goto out1;
1276 }
1277
1278 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1279
1280 INIT_WORK(&pegasus->carrier_check, check_carrier, pegasus);
1281
1282 pegasus->intf = intf;
1283 pegasus->usb = dev;
1284 pegasus->net = net;
1285 SET_MODULE_OWNER(net);
1286 net->open = pegasus_open;
1287 net->stop = pegasus_close;
1288 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1289 net->tx_timeout = pegasus_tx_timeout;
1290 net->do_ioctl = pegasus_ioctl;
1291 net->hard_start_xmit = pegasus_start_xmit;
1292 net->set_multicast_list = pegasus_set_multicast;
1293 net->get_stats = pegasus_netdev_stats;
1294 SET_ETHTOOL_OPS(net, &ops);
1295 pegasus->mii.dev = net;
1296 pegasus->mii.mdio_read = mdio_read;
1297 pegasus->mii.mdio_write = mdio_write;
1298 pegasus->mii.phy_id_mask = 0x1f;
1299 pegasus->mii.reg_num_mask = 0x1f;
1300 spin_lock_init(&pegasus->rx_pool_lock);
1301 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1302 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1303
1304 pegasus->features = usb_dev_id[dev_index].private;
1305 get_interrupt_interval(pegasus);
1306 if (reset_mac(pegasus)) {
1307 dev_err(&intf->dev, "can't reset MAC\n");
1308 res = -EIO;
1309 goto out2;
1310 }
1311 set_ethernet_addr(pegasus);
1312 fill_skb_pool(pegasus);
1313 if (pegasus->features & PEGASUS_II) {
1314 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1315 setup_pegasus_II(pegasus);
1316 }
1317 pegasus->phy = mii_phy_probe(pegasus);
1318 if (pegasus->phy == 0xff) {
1319 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1320 pegasus->phy = 1;
1321 }
1322 pegasus->mii.phy_id = pegasus->phy;
1323 usb_set_intfdata(intf, pegasus);
1324 SET_NETDEV_DEV(net, &intf->dev);
1325 pegasus_reset_wol(net);
1326 res = register_netdev(net);
1327 if (res)
1328 goto out3;
1329 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1330 CARRIER_CHECK_DELAY);
1331
1332 dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n",
1333 net->name,
1334 usb_dev_id[dev_index].name,
1335 net->dev_addr [0], net->dev_addr [1],
1336 net->dev_addr [2], net->dev_addr [3],
1337 net->dev_addr [4], net->dev_addr [5]);
1338 return 0;
1339
1340out3:
1341 usb_set_intfdata(intf, NULL);
1342 free_skb_pool(pegasus);
1343out2:
1344 free_all_urbs(pegasus);
1345out1:
1346 free_netdev(net);
1347out:
1348 usb_put_dev(dev);
1349 return res;
1350}
1351
1352static void pegasus_disconnect(struct usb_interface *intf)
1353{
1354 struct pegasus *pegasus = usb_get_intfdata(intf);
1355
1356 usb_set_intfdata(intf, NULL);
1357 if (!pegasus) {
1358 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1359 return;
1360 }
1361
1362 pegasus->flags |= PEGASUS_UNPLUG;
1363 cancel_delayed_work(&pegasus->carrier_check);
1364 unregister_netdev(pegasus->net);
1365 usb_put_dev(interface_to_usbdev(intf));
a85a46f2 1366 unlink_all_urbs(pegasus);
1da177e4
LT		 1367 free_all_urbs(pegasus);
1368 free_skb_pool(pegasus);
1369 if (pegasus->rx_skb)
1370 dev_kfree_skb(pegasus->rx_skb);
1371 free_netdev(pegasus->net);
1372}
1373
27d72e85 1374static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1da177e4
LT		 1375{
1376 struct pegasus *pegasus = usb_get_intfdata(intf);
1377
1378 netif_device_detach (pegasus->net);
27d72e85
DB		 1379 if (netif_running(pegasus->net)) {
1380 cancel_delayed_work(&pegasus->carrier_check);
1381
1382 usb_kill_urb(pegasus->rx_urb);
1383 usb_kill_urb(pegasus->intr_urb);
1384 }
1da177e4
LT		 1385 return 0;
1386}
1387
1388static int pegasus_resume (struct usb_interface *intf)
1389{
1390 struct pegasus *pegasus = usb_get_intfdata(intf);
1391
1392 netif_device_attach (pegasus->net);
27d72e85
DB		 1393 if (netif_running(pegasus->net)) {
1394 pegasus->rx_urb->status = 0;
1395 pegasus->rx_urb->actual_length = 0;
9727d04a 1396 read_bulk_callback(pegasus->rx_urb, NULL);
27d72e85
DB		 1397
1398 pegasus->intr_urb->status = 0;
1399 pegasus->intr_urb->actual_length = 0;
9727d04a 1400 intr_callback(pegasus->intr_urb, NULL);
27d72e85
DB		 1401
1402 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1403 CARRIER_CHECK_DELAY);
1404 }
1da177e4
LT		 1405 return 0;
1406}
1407
1408static struct usb_driver pegasus_driver = {
1409 .name = driver_name,
1410 .probe = pegasus_probe,
1411 .disconnect = pegasus_disconnect,
1412 .id_table = pegasus_ids,
1413 .suspend = pegasus_suspend,
1414 .resume = pegasus_resume,
1415};
1416
1417static int __init pegasus_init(void)
1418{
1419 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1420 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1421 if (!pegasus_workqueue)
1422 return -ENOMEM;
1423 return usb_register(&pegasus_driver);
1424}
1425
1426static void __exit pegasus_exit(void)
1427{
1428 destroy_workqueue(pegasus_workqueue);
1429 usb_deregister(&pegasus_driver);
1430}
1431
1432module_init(pegasus_init);
1433module_exit(pegasus_exit);
Linux 6.x block layer and io_uring tree(s)