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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
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 "v0.6.14 (2006/09/27)"
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;
59static int mii_mode;
60static char *devid;
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#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
66 PEGASUS_DEV(pn, vid, pid, flags)
67#include "pegasus.h"
68#undef PEGASUS_DEV
69#undef PEGASUS_DEV_CLASS
70 {NULL, 0, 0, 0},
71 {NULL, 0, 0, 0}
72};
73
74static struct usb_device_id pegasus_ids[] = {
75#define PEGASUS_DEV(pn, vid, pid, flags) \
76 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
77/*
78 * The Belkin F8T012xx1 bluetooth adaptor has the same vendor and product
79 * IDs as the Belkin F5D5050, so we need to teach the pegasus driver to
80 * ignore adaptors belonging to the "Wireless" class 0xE0. For this one
81 * case anyway, seeing as the pegasus is for "Wired" adaptors.
82 */
83#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
84 {.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_CLASS), \
85 .idVendor = vid, .idProduct = pid, .bDeviceClass = dclass},
86#include "pegasus.h"
87#undef PEGASUS_DEV
88#undef PEGASUS_DEV_CLASS
89 {},
90 {}
91};
92
93MODULE_AUTHOR(DRIVER_AUTHOR);
94MODULE_DESCRIPTION(DRIVER_DESC);
95MODULE_LICENSE("GPL");
96module_param(loopback, bool, 0);
97module_param(mii_mode, bool, 0);
98module_param(devid, charp, 0);
99MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
100MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
101MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
102
103/* use ethtool to change the level for any given device */
104static int msg_level = -1;
105module_param(msg_level, int, 0);
106MODULE_PARM_DESC(msg_level, "Override default message level");
107
108MODULE_DEVICE_TABLE(usb, pegasus_ids);
109static const struct net_device_ops pegasus_netdev_ops;
110
111static int update_eth_regs_async(pegasus_t *);
112/* Aargh!!! I _really_ hate such tweaks */
113static void ctrl_callback(struct urb *urb)
114{
115 pegasus_t *pegasus = urb->context;
116 int status = urb->status;
117
118 if (!pegasus)
119 return;
120
121 switch (status) {
122 case 0:
123 if (pegasus->flags & ETH_REGS_CHANGE) {
124 pegasus->flags &= ~ETH_REGS_CHANGE;
125 pegasus->flags |= ETH_REGS_CHANGED;
126 update_eth_regs_async(pegasus);
127 return;
128 }
129 break;
130 case -EINPROGRESS:
131 return;
132 case -ENOENT:
133 break;
134 default:
135 if (net_ratelimit())
136 netif_dbg(pegasus, drv, pegasus->net,
137 "%s, status %d\n", __func__, status);
138 break;
139 }
140 pegasus->flags &= ~ETH_REGS_CHANGED;
141 wake_up(&pegasus->ctrl_wait);
142}
143
144static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size,
145 void *data)
146{
147 int ret;
148 char *buffer;
149 DECLARE_WAITQUEUE(wait, current);
150
151 buffer = kmalloc(size, GFP_KERNEL);
152 if (!buffer) {
153 netif_warn(pegasus, drv, pegasus->net,
154 "out of memory in %s\n", __func__);
155 return -ENOMEM;
156 }
157 add_wait_queue(&pegasus->ctrl_wait, &wait);
158 set_current_state(TASK_UNINTERRUPTIBLE);
159 while (pegasus->flags & ETH_REGS_CHANGED)
160 schedule();
161 remove_wait_queue(&pegasus->ctrl_wait, &wait);
162 set_current_state(TASK_RUNNING);
163
164 pegasus->dr.bRequestType = PEGASUS_REQT_READ;
165 pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
166 pegasus->dr.wValue = cpu_to_le16(0);
167 pegasus->dr.wIndex = cpu_to_le16(indx);
168 pegasus->dr.wLength = cpu_to_le16(size);
169 pegasus->ctrl_urb->transfer_buffer_length = size;
170
171 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
172 usb_rcvctrlpipe(pegasus->usb, 0),
173 (char *) &pegasus->dr,
174 buffer, size, ctrl_callback, pegasus);
175
176 add_wait_queue(&pegasus->ctrl_wait, &wait);
177 set_current_state(TASK_UNINTERRUPTIBLE);
178
179 /* using ATOMIC, we'd never wake up if we slept */
180 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
181 set_current_state(TASK_RUNNING);
182 if (ret == -ENODEV)
183 netif_device_detach(pegasus->net);
184 if (net_ratelimit())
185 netif_err(pegasus, drv, pegasus->net,
186 "%s, status %d\n", __func__, ret);
187 goto out;
188 }
189
190 schedule();
191out:
192 remove_wait_queue(&pegasus->ctrl_wait, &wait);
193 memcpy(data, buffer, size);
194 kfree(buffer);
195
196 return ret;
197}
198
199static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size,
200 void *data)
201{
202 int ret;
203 char *buffer;
204 DECLARE_WAITQUEUE(wait, current);
205
206 buffer = kmemdup(data, size, GFP_KERNEL);
207 if (!buffer) {
208 netif_warn(pegasus, drv, pegasus->net,
209 "out of memory in %s\n", __func__);
210 return -ENOMEM;
211 }
212
213 add_wait_queue(&pegasus->ctrl_wait, &wait);
214 set_current_state(TASK_UNINTERRUPTIBLE);
215 while (pegasus->flags & ETH_REGS_CHANGED)
216 schedule();
217 remove_wait_queue(&pegasus->ctrl_wait, &wait);
218 set_current_state(TASK_RUNNING);
219
220 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
221 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
222 pegasus->dr.wValue = cpu_to_le16(0);
223 pegasus->dr.wIndex = cpu_to_le16(indx);
224 pegasus->dr.wLength = cpu_to_le16(size);
225 pegasus->ctrl_urb->transfer_buffer_length = size;
226
227 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
228 usb_sndctrlpipe(pegasus->usb, 0),
229 (char *) &pegasus->dr,
230 buffer, size, ctrl_callback, pegasus);
231
232 add_wait_queue(&pegasus->ctrl_wait, &wait);
233 set_current_state(TASK_UNINTERRUPTIBLE);
234
235 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
236 if (ret == -ENODEV)
237 netif_device_detach(pegasus->net);
238 netif_err(pegasus, drv, pegasus->net,
239 "%s, status %d\n", __func__, ret);
240 goto out;
241 }
242
243 schedule();
244out:
245 remove_wait_queue(&pegasus->ctrl_wait, &wait);
246 kfree(buffer);
247
248 return ret;
249}
250
251static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data)
252{
253 int ret;
254 char *tmp;
255 DECLARE_WAITQUEUE(wait, current);
256
257 tmp = kmemdup(&data, 1, GFP_KERNEL);
258 if (!tmp) {
259 netif_warn(pegasus, drv, pegasus->net,
260 "out of memory in %s\n", __func__);
261 return -ENOMEM;
262 }
263 add_wait_queue(&pegasus->ctrl_wait, &wait);
264 set_current_state(TASK_UNINTERRUPTIBLE);
265 while (pegasus->flags & ETH_REGS_CHANGED)
266 schedule();
267 remove_wait_queue(&pegasus->ctrl_wait, &wait);
268 set_current_state(TASK_RUNNING);
269
270 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
271 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
272 pegasus->dr.wValue = cpu_to_le16(data);
273 pegasus->dr.wIndex = cpu_to_le16(indx);
274 pegasus->dr.wLength = cpu_to_le16(1);
275 pegasus->ctrl_urb->transfer_buffer_length = 1;
276
277 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
278 usb_sndctrlpipe(pegasus->usb, 0),
279 (char *) &pegasus->dr,
280 tmp, 1, ctrl_callback, pegasus);
281
282 add_wait_queue(&pegasus->ctrl_wait, &wait);
283 set_current_state(TASK_UNINTERRUPTIBLE);
284
285 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
286 if (ret == -ENODEV)
287 netif_device_detach(pegasus->net);
288 if (net_ratelimit())
289 netif_err(pegasus, drv, pegasus->net,
290 "%s, status %d\n", __func__, ret);
291 goto out;
292 }
293
294 schedule();
295out:
296 remove_wait_queue(&pegasus->ctrl_wait, &wait);
297 kfree(tmp);
298
299 return ret;
300}
301
302static int update_eth_regs_async(pegasus_t *pegasus)
303{
304 int ret;
305
306 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
307 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
308 pegasus->dr.wValue = cpu_to_le16(0);
309 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
310 pegasus->dr.wLength = cpu_to_le16(3);
311 pegasus->ctrl_urb->transfer_buffer_length = 3;
312
313 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
314 usb_sndctrlpipe(pegasus->usb, 0),
315 (char *) &pegasus->dr,
316 pegasus->eth_regs, 3, ctrl_callback, pegasus);
317
318 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
319 if (ret == -ENODEV)
320 netif_device_detach(pegasus->net);
321 netif_err(pegasus, drv, pegasus->net,
322 "%s, status %d\n", __func__, ret);
323 }
324
325 return ret;
326}
327
328/* Returns 0 on success, error on failure */
329static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
330{
331 int i;
332 __u8 data[4] = { phy, 0, 0, indx };
333 __le16 regdi;
334 int ret;
335
336 set_register(pegasus, PhyCtrl, 0);
337 set_registers(pegasus, PhyAddr, sizeof(data), data);
338 set_register(pegasus, PhyCtrl, (indx | PHY_READ));
339 for (i = 0; i < REG_TIMEOUT; i++) {
340 ret = get_registers(pegasus, PhyCtrl, 1, data);
341 if (ret == -ESHUTDOWN)
342 goto fail;
343 if (data[0] & PHY_DONE)
344 break;
345 }
346
347 if (i >= REG_TIMEOUT)
348 goto fail;
349
350 ret = get_registers(pegasus, PhyData, 2, ®di);
351 *regd = le16_to_cpu(regdi);
352 return ret;
353
354fail:
355 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
356
357 return ret;
358}
359
360static int mdio_read(struct net_device *dev, int phy_id, int loc)
361{
362 pegasus_t *pegasus = netdev_priv(dev);
363 u16 res;
364
365 read_mii_word(pegasus, phy_id, loc, &res);
366 return (int)res;
367}
368
369static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 regd)
370{
371 int i;
372 __u8 data[4] = { phy, 0, 0, indx };
373 int ret;
374
375 data[1] = (u8) regd;
376 data[2] = (u8) (regd >> 8);
377 set_register(pegasus, PhyCtrl, 0);
378 set_registers(pegasus, PhyAddr, sizeof(data), data);
379 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
380 for (i = 0; i < REG_TIMEOUT; i++) {
381 ret = get_registers(pegasus, PhyCtrl, 1, data);
382 if (ret == -ESHUTDOWN)
383 goto fail;
384 if (data[0] & PHY_DONE)
385 break;
386 }
387
388 if (i >= REG_TIMEOUT)
389 goto fail;
390
391 return ret;
392
393fail:
394 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
395 return -ETIMEDOUT;
396}
397
398static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
399{
400 pegasus_t *pegasus = netdev_priv(dev);
401
402 write_mii_word(pegasus, phy_id, loc, val);
403}
404
405static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
406{
407 int i;
408 __u8 tmp;
409 __le16 retdatai;
410 int ret;
411
412 set_register(pegasus, EpromCtrl, 0);
413 set_register(pegasus, EpromOffset, index);
414 set_register(pegasus, EpromCtrl, EPROM_READ);
415
416 for (i = 0; i < REG_TIMEOUT; i++) {
417 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
418 if (tmp & EPROM_DONE)
419 break;
420 if (ret == -ESHUTDOWN)
421 goto fail;
422 }
423 if (i >= REG_TIMEOUT)
424 goto fail;
425
426 ret = get_registers(pegasus, EpromData, 2, &retdatai);
427 *retdata = le16_to_cpu(retdatai);
428 return ret;
429
430fail:
431 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
432 return -ETIMEDOUT;
433}
434
435#ifdef PEGASUS_WRITE_EEPROM
436static inline void enable_eprom_write(pegasus_t *pegasus)
437{
438 __u8 tmp;
439 int ret;
440
441 get_registers(pegasus, EthCtrl2, 1, &tmp);
442 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
443}
444
445static inline void disable_eprom_write(pegasus_t *pegasus)
446{
447 __u8 tmp;
448 int ret;
449
450 get_registers(pegasus, EthCtrl2, 1, &tmp);
451 set_register(pegasus, EpromCtrl, 0);
452 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
453}
454
455static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data)
456{
457 int i;
458 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
459 int ret;
460 __le16 le_data = cpu_to_le16(data);
461
462 set_registers(pegasus, EpromOffset, 4, d);
463 enable_eprom_write(pegasus);
464 set_register(pegasus, EpromOffset, index);
465 set_registers(pegasus, EpromData, 2, &le_data);
466 set_register(pegasus, EpromCtrl, EPROM_WRITE);
467
468 for (i = 0; i < REG_TIMEOUT; i++) {
469 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
470 if (ret == -ESHUTDOWN)
471 goto fail;
472 if (tmp & EPROM_DONE)
473 break;
474 }
475 disable_eprom_write(pegasus);
476 if (i >= REG_TIMEOUT)
477 goto fail;
478
479 return ret;
480
481fail:
482 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
483 return -ETIMEDOUT;
484}
485#endif /* PEGASUS_WRITE_EEPROM */
486
487static inline void get_node_id(pegasus_t *pegasus, __u8 *id)
488{
489 int i;
490 __u16 w16;
491
492 for (i = 0; i < 3; i++) {
493 read_eprom_word(pegasus, i, &w16);
494 ((__le16 *) id)[i] = cpu_to_le16(w16);
495 }
496}
497
498static void set_ethernet_addr(pegasus_t *pegasus)
499{
500 __u8 node_id[6];
501
502 if (pegasus->features & PEGASUS_II) {
503 get_registers(pegasus, 0x10, sizeof(node_id), node_id);
504 } else {
505 get_node_id(pegasus, node_id);
506 set_registers(pegasus, EthID, sizeof(node_id), node_id);
507 }
508 memcpy(pegasus->net->dev_addr, node_id, sizeof(node_id));
509}
510
511static inline int reset_mac(pegasus_t *pegasus)
512{
513 __u8 data = 0x8;
514 int i;
515
516 set_register(pegasus, EthCtrl1, data);
517 for (i = 0; i < REG_TIMEOUT; i++) {
518 get_registers(pegasus, EthCtrl1, 1, &data);
519 if (~data & 0x08) {
520 if (loopback & 1)
521 break;
522 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
523 set_register(pegasus, Gpio1, 0x34);
524 else
525 set_register(pegasus, Gpio1, 0x26);
526 set_register(pegasus, Gpio0, pegasus->features);
527 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
528 break;
529 }
530 }
531 if (i == REG_TIMEOUT)
532 return -ETIMEDOUT;
533
534 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
535 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
536 set_register(pegasus, Gpio0, 0x24);
537 set_register(pegasus, Gpio0, 0x26);
538 }
539 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
540 __u16 auxmode;
541 read_mii_word(pegasus, 3, 0x1b, &auxmode);
542 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
543 }
544
545 return 0;
546}
547
548static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
549{
550 __u16 linkpart;
551 __u8 data[4];
552 pegasus_t *pegasus = netdev_priv(dev);
553 int ret;
554
555 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
556 data[0] = 0xc9;
557 data[1] = 0;
558 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
559 data[1] |= 0x20; /* set full duplex */
560 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
561 data[1] |= 0x10; /* set 100 Mbps */
562 if (mii_mode)
563 data[1] = 0;
564 data[2] = (loopback & 1) ? 0x09 : 0x01;
565
566 memcpy(pegasus->eth_regs, data, sizeof(data));
567 ret = set_registers(pegasus, EthCtrl0, 3, data);
568
569 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
570 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
571 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
572 u16 auxmode;
573 read_mii_word(pegasus, 0, 0x1b, &auxmode);
574 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
575 }
576
577 return ret;
578}
579
580static void fill_skb_pool(pegasus_t *pegasus)
581{
582 int i;
583
584 for (i = 0; i < RX_SKBS; i++) {
585 if (pegasus->rx_pool[i])
586 continue;
587 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
588 /*
589 ** we give up if the allocation fail. the tasklet will be
590 ** rescheduled again anyway...
591 */
592 if (pegasus->rx_pool[i] == NULL)
593 return;
594 skb_reserve(pegasus->rx_pool[i], 2);
595 }
596}
597
598static void free_skb_pool(pegasus_t *pegasus)
599{
600 int i;
601
602 for (i = 0; i < RX_SKBS; i++) {
603 if (pegasus->rx_pool[i]) {
604 dev_kfree_skb(pegasus->rx_pool[i]);
605 pegasus->rx_pool[i] = NULL;
606 }
607 }
608}
609
610static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
611{
612 int i;
613 struct sk_buff *skb;
614
615 for (i = 0; i < RX_SKBS; i++) {
616 if (likely(pegasus->rx_pool[i] != NULL)) {
617 skb = pegasus->rx_pool[i];
618 pegasus->rx_pool[i] = NULL;
619 return skb;
620 }
621 }
622 return NULL;
623}
624
625static void read_bulk_callback(struct urb *urb)
626{
627 pegasus_t *pegasus = urb->context;
628 struct net_device *net;
629 int rx_status, count = urb->actual_length;
630 int status = urb->status;
631 u8 *buf = urb->transfer_buffer;
632 __u16 pkt_len;
633
634 if (!pegasus)
635 return;
636
637 net = pegasus->net;
638 if (!netif_device_present(net) || !netif_running(net))
639 return;
640
641 switch (status) {
642 case 0:
643 break;
644 case -ETIME:
645 netif_dbg(pegasus, rx_err, net, "reset MAC\n");
646 pegasus->flags &= ~PEGASUS_RX_BUSY;
647 break;
648 case -EPIPE: /* stall, or disconnect from TT */
649 /* FIXME schedule work to clear the halt */
650 netif_warn(pegasus, rx_err, net, "no rx stall recovery\n");
651 return;
652 case -ENOENT:
653 case -ECONNRESET:
654 case -ESHUTDOWN:
655 netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status);
656 return;
657 default:
658 netif_dbg(pegasus, rx_err, net, "RX status %d\n", status);
659 goto goon;
660 }
661
662 if (!count || count < 4)
663 goto goon;
664
665 rx_status = buf[count - 2];
666 if (rx_status & 0x1e) {
667 netif_dbg(pegasus, rx_err, net,
668 "RX packet error %x\n", rx_status);
669 pegasus->stats.rx_errors++;
670 if (rx_status & 0x06) /* long or runt */
671 pegasus->stats.rx_length_errors++;
672 if (rx_status & 0x08)
673 pegasus->stats.rx_crc_errors++;
674 if (rx_status & 0x10) /* extra bits */
675 pegasus->stats.rx_frame_errors++;
676 goto goon;
677 }
678 if (pegasus->chip == 0x8513) {
679 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
680 pkt_len &= 0x0fff;
681 pegasus->rx_skb->data += 2;
682 } else {
683 pkt_len = buf[count - 3] << 8;
684 pkt_len += buf[count - 4];
685 pkt_len &= 0xfff;
686 pkt_len -= 8;
687 }
688
689 /*
690 * If the packet is unreasonably long, quietly drop it rather than
691 * kernel panicing by calling skb_put.
692 */
693 if (pkt_len > PEGASUS_MTU)
694 goto goon;
695
696 /*
697 * at this point we are sure pegasus->rx_skb != NULL
698 * so we go ahead and pass up the packet.
699 */
700 skb_put(pegasus->rx_skb, pkt_len);
701 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
702 netif_rx(pegasus->rx_skb);
703 pegasus->stats.rx_packets++;
704 pegasus->stats.rx_bytes += pkt_len;
705
706 if (pegasus->flags & PEGASUS_UNPLUG)
707 return;
708
709 spin_lock(&pegasus->rx_pool_lock);
710 pegasus->rx_skb = pull_skb(pegasus);
711 spin_unlock(&pegasus->rx_pool_lock);
712
713 if (pegasus->rx_skb == NULL)
714 goto tl_sched;
715goon:
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);
720 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
721 if (rx_status == -ENODEV)
722 netif_device_detach(pegasus->net);
723 else if (rx_status) {
724 pegasus->flags |= PEGASUS_RX_URB_FAIL;
725 goto tl_sched;
726 } else {
727 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
728 }
729
730 return;
731
732tl_sched:
733 tasklet_schedule(&pegasus->rx_tl);
734}
735
736static void rx_fixup(unsigned long data)
737{
738 pegasus_t *pegasus;
739 unsigned long flags;
740 int status;
741
742 pegasus = (pegasus_t *) data;
743 if (pegasus->flags & PEGASUS_UNPLUG)
744 return;
745
746 spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
747 fill_skb_pool(pegasus);
748 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
749 if (pegasus->rx_skb)
750 goto try_again;
751 if (pegasus->rx_skb == NULL)
752 pegasus->rx_skb = pull_skb(pegasus);
753 if (pegasus->rx_skb == NULL) {
754 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n");
755 tasklet_schedule(&pegasus->rx_tl);
756 goto done;
757 }
758 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
759 usb_rcvbulkpipe(pegasus->usb, 1),
760 pegasus->rx_skb->data, PEGASUS_MTU + 8,
761 read_bulk_callback, pegasus);
762try_again:
763 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
764 if (status == -ENODEV)
765 netif_device_detach(pegasus->net);
766 else if (status) {
767 pegasus->flags |= PEGASUS_RX_URB_FAIL;
768 tasklet_schedule(&pegasus->rx_tl);
769 } else {
770 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
771 }
772done:
773 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
774}
775
776static void write_bulk_callback(struct urb *urb)
777{
778 pegasus_t *pegasus = urb->context;
779 struct net_device *net;
780 int status = urb->status;
781
782 if (!pegasus)
783 return;
784
785 net = pegasus->net;
786
787 if (!netif_device_present(net) || !netif_running(net))
788 return;
789
790 switch (status) {
791 case -EPIPE:
792 /* FIXME schedule_work() to clear the tx halt */
793 netif_stop_queue(net);
794 netif_warn(pegasus, tx_err, net, "no tx stall recovery\n");
795 return;
796 case -ENOENT:
797 case -ECONNRESET:
798 case -ESHUTDOWN:
799 netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status);
800 return;
801 default:
802 netif_info(pegasus, tx_err, net, "TX status %d\n", status);
803 /* FALL THROUGH */
804 case 0:
805 break;
806 }
807
808 net->trans_start = jiffies; /* prevent tx timeout */
809 netif_wake_queue(net);
810}
811
812static void intr_callback(struct urb *urb)
813{
814 pegasus_t *pegasus = urb->context;
815 struct net_device *net;
816 int res, status = urb->status;
817
818 if (!pegasus)
819 return;
820 net = pegasus->net;
821
822 switch (status) {
823 case 0:
824 break;
825 case -ECONNRESET: /* unlink */
826 case -ENOENT:
827 case -ESHUTDOWN:
828 return;
829 default:
830 /* some Pegasus-I products report LOTS of data
831 * toggle errors... avoid log spamming
832 */
833 netif_dbg(pegasus, timer, net, "intr status %d\n", status);
834 }
835
836 if (urb->actual_length >= 6) {
837 u8 *d = urb->transfer_buffer;
838
839 /* byte 0 == tx_status1, reg 2B */
840 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
841 |LATE_COL|JABBER_TIMEOUT)) {
842 pegasus->stats.tx_errors++;
843 if (d[0] & TX_UNDERRUN)
844 pegasus->stats.tx_fifo_errors++;
845 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
846 pegasus->stats.tx_aborted_errors++;
847 if (d[0] & LATE_COL)
848 pegasus->stats.tx_window_errors++;
849 }
850
851 /* d[5].LINK_STATUS lies on some adapters.
852 * d[0].NO_CARRIER kicks in only with failed TX.
853 * ... so monitoring with MII may be safest.
854 */
855
856 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
857 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
858 }
859
860 res = usb_submit_urb(urb, GFP_ATOMIC);
861 if (res == -ENODEV)
862 netif_device_detach(pegasus->net);
863 if (res)
864 netif_err(pegasus, timer, net,
865 "can't resubmit interrupt urb, %d\n", res);
866}
867
868static void pegasus_tx_timeout(struct net_device *net)
869{
870 pegasus_t *pegasus = netdev_priv(net);
871 netif_warn(pegasus, timer, net, "tx timeout\n");
872 usb_unlink_urb(pegasus->tx_urb);
873 pegasus->stats.tx_errors++;
874}
875
876static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb,
877 struct net_device *net)
878{
879 pegasus_t *pegasus = netdev_priv(net);
880 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
881 int res;
882 __u16 l16 = skb->len;
883
884 netif_stop_queue(net);
885
886 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
887 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
888 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
889 usb_sndbulkpipe(pegasus->usb, 2),
890 pegasus->tx_buff, count,
891 write_bulk_callback, pegasus);
892 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
893 netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res);
894 switch (res) {
895 case -EPIPE: /* stall, or disconnect from TT */
896 /* cleanup should already have been scheduled */
897 break;
898 case -ENODEV: /* disconnect() upcoming */
899 case -EPERM:
900 netif_device_detach(pegasus->net);
901 break;
902 default:
903 pegasus->stats.tx_errors++;
904 netif_start_queue(net);
905 }
906 } else {
907 pegasus->stats.tx_packets++;
908 pegasus->stats.tx_bytes += skb->len;
909 }
910 dev_kfree_skb(skb);
911
912 return NETDEV_TX_OK;
913}
914
915static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
916{
917 return &((pegasus_t *) netdev_priv(dev))->stats;
918}
919
920static inline void disable_net_traffic(pegasus_t *pegasus)
921{
922 __le16 tmp = cpu_to_le16(0);
923
924 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp);
925}
926
927static inline void get_interrupt_interval(pegasus_t *pegasus)
928{
929 u16 data;
930 u8 interval;
931
932 read_eprom_word(pegasus, 4, &data);
933 interval = data >> 8;
934 if (pegasus->usb->speed != USB_SPEED_HIGH) {
935 if (interval < 0x80) {
936 netif_info(pegasus, timer, pegasus->net,
937 "intr interval changed from %ums to %ums\n",
938 interval, 0x80);
939 interval = 0x80;
940 data = (data & 0x00FF) | ((u16)interval << 8);
941#ifdef PEGASUS_WRITE_EEPROM
942 write_eprom_word(pegasus, 4, data);
943#endif
944 }
945 }
946 pegasus->intr_interval = interval;
947}
948
949static void set_carrier(struct net_device *net)
950{
951 pegasus_t *pegasus = netdev_priv(net);
952 u16 tmp;
953
954 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
955 return;
956
957 if (tmp & BMSR_LSTATUS)
958 netif_carrier_on(net);
959 else
960 netif_carrier_off(net);
961}
962
963static void free_all_urbs(pegasus_t *pegasus)
964{
965 usb_free_urb(pegasus->intr_urb);
966 usb_free_urb(pegasus->tx_urb);
967 usb_free_urb(pegasus->rx_urb);
968 usb_free_urb(pegasus->ctrl_urb);
969}
970
971static void unlink_all_urbs(pegasus_t *pegasus)
972{
973 usb_kill_urb(pegasus->intr_urb);
974 usb_kill_urb(pegasus->tx_urb);
975 usb_kill_urb(pegasus->rx_urb);
976 usb_kill_urb(pegasus->ctrl_urb);
977}
978
979static int alloc_urbs(pegasus_t *pegasus)
980{
981 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
982 if (!pegasus->ctrl_urb)
983 return 0;
984 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
985 if (!pegasus->rx_urb) {
986 usb_free_urb(pegasus->ctrl_urb);
987 return 0;
988 }
989 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
990 if (!pegasus->tx_urb) {
991 usb_free_urb(pegasus->rx_urb);
992 usb_free_urb(pegasus->ctrl_urb);
993 return 0;
994 }
995 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
996 if (!pegasus->intr_urb) {
997 usb_free_urb(pegasus->tx_urb);
998 usb_free_urb(pegasus->rx_urb);
999 usb_free_urb(pegasus->ctrl_urb);
1000 return 0;
1001 }
1002
1003 return 1;
1004}
1005
1006static int pegasus_open(struct net_device *net)
1007{
1008 pegasus_t *pegasus = netdev_priv(net);
1009 int res;
1010
1011 if (pegasus->rx_skb == NULL)
1012 pegasus->rx_skb = pull_skb(pegasus);
1013 /*
1014 ** Note: no point to free the pool. it is empty :-)
1015 */
1016 if (!pegasus->rx_skb)
1017 return -ENOMEM;
1018
1019 res = set_registers(pegasus, EthID, 6, net->dev_addr);
1020
1021 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
1022 usb_rcvbulkpipe(pegasus->usb, 1),
1023 pegasus->rx_skb->data, PEGASUS_MTU + 8,
1024 read_bulk_callback, pegasus);
1025 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
1026 if (res == -ENODEV)
1027 netif_device_detach(pegasus->net);
1028 netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res);
1029 goto exit;
1030 }
1031
1032 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
1033 usb_rcvintpipe(pegasus->usb, 3),
1034 pegasus->intr_buff, sizeof(pegasus->intr_buff),
1035 intr_callback, pegasus, pegasus->intr_interval);
1036 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
1037 if (res == -ENODEV)
1038 netif_device_detach(pegasus->net);
1039 netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res);
1040 usb_kill_urb(pegasus->rx_urb);
1041 goto exit;
1042 }
1043 if ((res = enable_net_traffic(net, pegasus->usb))) {
1044 netif_dbg(pegasus, ifup, net,
1045 "can't enable_net_traffic() - %d\n", res);
1046 res = -EIO;
1047 usb_kill_urb(pegasus->rx_urb);
1048 usb_kill_urb(pegasus->intr_urb);
1049 free_skb_pool(pegasus);
1050 goto exit;
1051 }
1052 set_carrier(net);
1053 netif_start_queue(net);
1054 netif_dbg(pegasus, ifup, net, "open\n");
1055 res = 0;
1056exit:
1057 return res;
1058}
1059
1060static int pegasus_close(struct net_device *net)
1061{
1062 pegasus_t *pegasus = netdev_priv(net);
1063
1064 netif_stop_queue(net);
1065 if (!(pegasus->flags & PEGASUS_UNPLUG))
1066 disable_net_traffic(pegasus);
1067 tasklet_kill(&pegasus->rx_tl);
1068 unlink_all_urbs(pegasus);
1069
1070 return 0;
1071}
1072
1073static void pegasus_get_drvinfo(struct net_device *dev,
1074 struct ethtool_drvinfo *info)
1075{
1076 pegasus_t *pegasus = netdev_priv(dev);
1077 strncpy(info->driver, driver_name, sizeof(info->driver) - 1);
1078 strncpy(info->version, DRIVER_VERSION, sizeof(info->version) - 1);
1079 usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info));
1080}
1081
1082/* also handles three patterns of some kind in hardware */
1083#define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
1084
1085static void
1086pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1087{
1088 pegasus_t *pegasus = netdev_priv(dev);
1089
1090 wol->supported = WAKE_MAGIC | WAKE_PHY;
1091 wol->wolopts = pegasus->wolopts;
1092}
1093
1094static int
1095pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1096{
1097 pegasus_t *pegasus = netdev_priv(dev);
1098 u8 reg78 = 0x04;
1099
1100 if (wol->wolopts & ~WOL_SUPPORTED)
1101 return -EINVAL;
1102
1103 if (wol->wolopts & WAKE_MAGIC)
1104 reg78 |= 0x80;
1105 if (wol->wolopts & WAKE_PHY)
1106 reg78 |= 0x40;
1107 /* FIXME this 0x10 bit still needs to get set in the chip... */
1108 if (wol->wolopts)
1109 pegasus->eth_regs[0] |= 0x10;
1110 else
1111 pegasus->eth_regs[0] &= ~0x10;
1112 pegasus->wolopts = wol->wolopts;
1113 return set_register(pegasus, WakeupControl, reg78);
1114}
1115
1116static inline void pegasus_reset_wol(struct net_device *dev)
1117{
1118 struct ethtool_wolinfo wol;
1119
1120 memset(&wol, 0, sizeof wol);
1121 (void) pegasus_set_wol(dev, &wol);
1122}
1123
1124static int
1125pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1126{
1127 pegasus_t *pegasus;
1128
1129 pegasus = netdev_priv(dev);
1130 mii_ethtool_gset(&pegasus->mii, ecmd);
1131 return 0;
1132}
1133
1134static int
1135pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1136{
1137 pegasus_t *pegasus = netdev_priv(dev);
1138 return mii_ethtool_sset(&pegasus->mii, ecmd);
1139}
1140
1141static int pegasus_nway_reset(struct net_device *dev)
1142{
1143 pegasus_t *pegasus = netdev_priv(dev);
1144 return mii_nway_restart(&pegasus->mii);
1145}
1146
1147static u32 pegasus_get_link(struct net_device *dev)
1148{
1149 pegasus_t *pegasus = netdev_priv(dev);
1150 return mii_link_ok(&pegasus->mii);
1151}
1152
1153static u32 pegasus_get_msglevel(struct net_device *dev)
1154{
1155 pegasus_t *pegasus = netdev_priv(dev);
1156 return pegasus->msg_enable;
1157}
1158
1159static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1160{
1161 pegasus_t *pegasus = netdev_priv(dev);
1162 pegasus->msg_enable = v;
1163}
1164
1165static const struct ethtool_ops ops = {
1166 .get_drvinfo = pegasus_get_drvinfo,
1167 .get_settings = pegasus_get_settings,
1168 .set_settings = pegasus_set_settings,
1169 .nway_reset = pegasus_nway_reset,
1170 .get_link = pegasus_get_link,
1171 .get_msglevel = pegasus_get_msglevel,
1172 .set_msglevel = pegasus_set_msglevel,
1173 .get_wol = pegasus_get_wol,
1174 .set_wol = pegasus_set_wol,
1175};
1176
1177static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1178{
1179 __u16 *data = (__u16 *) &rq->ifr_ifru;
1180 pegasus_t *pegasus = netdev_priv(net);
1181 int res;
1182
1183 switch (cmd) {
1184 case SIOCDEVPRIVATE:
1185 data[0] = pegasus->phy;
1186 case SIOCDEVPRIVATE + 1:
1187 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1188 res = 0;
1189 break;
1190 case SIOCDEVPRIVATE + 2:
1191 if (!capable(CAP_NET_ADMIN))
1192 return -EPERM;
1193 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1194 res = 0;
1195 break;
1196 default:
1197 res = -EOPNOTSUPP;
1198 }
1199 return res;
1200}
1201
1202static void pegasus_set_multicast(struct net_device *net)
1203{
1204 pegasus_t *pegasus = netdev_priv(net);
1205
1206 if (net->flags & IFF_PROMISC) {
1207 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1208 netif_info(pegasus, link, net, "Promiscuous mode enabled\n");
1209 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1210 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1211 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1212 netif_dbg(pegasus, link, net, "set allmulti\n");
1213 } else {
1214 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1215 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1216 }
1217
1218 pegasus->ctrl_urb->status = 0;
1219
1220 pegasus->flags |= ETH_REGS_CHANGE;
1221 ctrl_callback(pegasus->ctrl_urb);
1222}
1223
1224static __u8 mii_phy_probe(pegasus_t *pegasus)
1225{
1226 int i;
1227 __u16 tmp;
1228
1229 for (i = 0; i < 32; i++) {
1230 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1231 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1232 continue;
1233 else
1234 return i;
1235 }
1236
1237 return 0xff;
1238}
1239
1240static inline void setup_pegasus_II(pegasus_t *pegasus)
1241{
1242 __u8 data = 0xa5;
1243
1244 set_register(pegasus, Reg1d, 0);
1245 set_register(pegasus, Reg7b, 1);
1246 mdelay(100);
1247 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1248 set_register(pegasus, Reg7b, 0);
1249 else
1250 set_register(pegasus, Reg7b, 2);
1251
1252 set_register(pegasus, 0x83, data);
1253 get_registers(pegasus, 0x83, 1, &data);
1254
1255 if (data == 0xa5)
1256 pegasus->chip = 0x8513;
1257 else
1258 pegasus->chip = 0;
1259
1260 set_register(pegasus, 0x80, 0xc0);
1261 set_register(pegasus, 0x83, 0xff);
1262 set_register(pegasus, 0x84, 0x01);
1263
1264 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1265 set_register(pegasus, Reg81, 6);
1266 else
1267 set_register(pegasus, Reg81, 2);
1268}
1269
1270
1271static int pegasus_count;
1272static struct workqueue_struct *pegasus_workqueue;
1273#define CARRIER_CHECK_DELAY (2 * HZ)
1274
1275static void check_carrier(struct work_struct *work)
1276{
1277 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1278 set_carrier(pegasus->net);
1279 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1280 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1281 CARRIER_CHECK_DELAY);
1282 }
1283}
1284
1285static int pegasus_blacklisted(struct usb_device *udev)
1286{
1287 struct usb_device_descriptor *udd = &udev->descriptor;
1288
1289 /* Special quirk to keep the driver from handling the Belkin Bluetooth
1290 * dongle which happens to have the same ID.
1291 */
1292 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) &&
1293 (udd->idProduct == cpu_to_le16(0x0121)) &&
1294 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
1295 (udd->bDeviceProtocol == 1))
1296 return 1;
1297
1298 return 0;
1299}
1300
1301/* we rely on probe() and remove() being serialized so we
1302 * don't need extra locking on pegasus_count.
1303 */
1304static void pegasus_dec_workqueue(void)
1305{
1306 pegasus_count--;
1307 if (pegasus_count == 0) {
1308 destroy_workqueue(pegasus_workqueue);
1309 pegasus_workqueue = NULL;
1310 }
1311}
1312
1313static int pegasus_probe(struct usb_interface *intf,
1314 const struct usb_device_id *id)
1315{
1316 struct usb_device *dev = interface_to_usbdev(intf);
1317 struct net_device *net;
1318 pegasus_t *pegasus;
1319 int dev_index = id - pegasus_ids;
1320 int res = -ENOMEM;
1321
1322 if (pegasus_blacklisted(dev))
1323 return -ENODEV;
1324
1325 if (pegasus_count == 0) {
1326 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1327 if (!pegasus_workqueue)
1328 return -ENOMEM;
1329 }
1330 pegasus_count++;
1331
1332 usb_get_dev(dev);
1333
1334 net = alloc_etherdev(sizeof(struct pegasus));
1335 if (!net) {
1336 dev_err(&intf->dev, "can't allocate %s\n", "device");
1337 goto out;
1338 }
1339
1340 pegasus = netdev_priv(net);
1341 pegasus->dev_index = dev_index;
1342 init_waitqueue_head(&pegasus->ctrl_wait);
1343
1344 if (!alloc_urbs(pegasus)) {
1345 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1346 goto out1;
1347 }
1348
1349 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1350
1351 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1352
1353 pegasus->intf = intf;
1354 pegasus->usb = dev;
1355 pegasus->net = net;
1356
1357
1358 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1359 net->netdev_ops = &pegasus_netdev_ops;
1360 SET_ETHTOOL_OPS(net, &ops);
1361 pegasus->mii.dev = net;
1362 pegasus->mii.mdio_read = mdio_read;
1363 pegasus->mii.mdio_write = mdio_write;
1364 pegasus->mii.phy_id_mask = 0x1f;
1365 pegasus->mii.reg_num_mask = 0x1f;
1366 spin_lock_init(&pegasus->rx_pool_lock);
1367 pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
1368 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1369
1370 pegasus->features = usb_dev_id[dev_index].private;
1371 get_interrupt_interval(pegasus);
1372 if (reset_mac(pegasus)) {
1373 dev_err(&intf->dev, "can't reset MAC\n");
1374 res = -EIO;
1375 goto out2;
1376 }
1377 set_ethernet_addr(pegasus);
1378 fill_skb_pool(pegasus);
1379 if (pegasus->features & PEGASUS_II) {
1380 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1381 setup_pegasus_II(pegasus);
1382 }
1383 pegasus->phy = mii_phy_probe(pegasus);
1384 if (pegasus->phy == 0xff) {
1385 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1386 pegasus->phy = 1;
1387 }
1388 pegasus->mii.phy_id = pegasus->phy;
1389 usb_set_intfdata(intf, pegasus);
1390 SET_NETDEV_DEV(net, &intf->dev);
1391 pegasus_reset_wol(net);
1392 res = register_netdev(net);
1393 if (res)
1394 goto out3;
1395 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1396 CARRIER_CHECK_DELAY);
1397
1398 dev_info(&intf->dev, "%s, %s, %pM\n",
1399 net->name,
1400 usb_dev_id[dev_index].name,
1401 net->dev_addr);
1402 return 0;
1403
1404out3:
1405 usb_set_intfdata(intf, NULL);
1406 free_skb_pool(pegasus);
1407out2:
1408 free_all_urbs(pegasus);
1409out1:
1410 free_netdev(net);
1411out:
1412 usb_put_dev(dev);
1413 pegasus_dec_workqueue();
1414 return res;
1415}
1416
1417static void pegasus_disconnect(struct usb_interface *intf)
1418{
1419 struct pegasus *pegasus = usb_get_intfdata(intf);
1420
1421 usb_set_intfdata(intf, NULL);
1422 if (!pegasus) {
1423 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1424 return;
1425 }
1426
1427 pegasus->flags |= PEGASUS_UNPLUG;
1428 cancel_delayed_work(&pegasus->carrier_check);
1429 unregister_netdev(pegasus->net);
1430 usb_put_dev(interface_to_usbdev(intf));
1431 unlink_all_urbs(pegasus);
1432 free_all_urbs(pegasus);
1433 free_skb_pool(pegasus);
1434 if (pegasus->rx_skb != NULL) {
1435 dev_kfree_skb(pegasus->rx_skb);
1436 pegasus->rx_skb = NULL;
1437 }
1438 free_netdev(pegasus->net);
1439 pegasus_dec_workqueue();
1440}
1441
1442static int pegasus_suspend(struct usb_interface *intf, pm_message_t message)
1443{
1444 struct pegasus *pegasus = usb_get_intfdata(intf);
1445
1446 netif_device_detach(pegasus->net);
1447 cancel_delayed_work(&pegasus->carrier_check);
1448 if (netif_running(pegasus->net)) {
1449 usb_kill_urb(pegasus->rx_urb);
1450 usb_kill_urb(pegasus->intr_urb);
1451 }
1452 return 0;
1453}
1454
1455static int pegasus_resume(struct usb_interface *intf)
1456{
1457 struct pegasus *pegasus = usb_get_intfdata(intf);
1458
1459 netif_device_attach(pegasus->net);
1460 if (netif_running(pegasus->net)) {
1461 pegasus->rx_urb->status = 0;
1462 pegasus->rx_urb->actual_length = 0;
1463 read_bulk_callback(pegasus->rx_urb);
1464
1465 pegasus->intr_urb->status = 0;
1466 pegasus->intr_urb->actual_length = 0;
1467 intr_callback(pegasus->intr_urb);
1468 }
1469 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1470 CARRIER_CHECK_DELAY);
1471 return 0;
1472}
1473
1474static const struct net_device_ops pegasus_netdev_ops = {
1475 .ndo_open = pegasus_open,
1476 .ndo_stop = pegasus_close,
1477 .ndo_do_ioctl = pegasus_ioctl,
1478 .ndo_start_xmit = pegasus_start_xmit,
1479 .ndo_set_multicast_list = pegasus_set_multicast,
1480 .ndo_get_stats = pegasus_netdev_stats,
1481 .ndo_tx_timeout = pegasus_tx_timeout,
1482 .ndo_change_mtu = eth_change_mtu,
1483 .ndo_set_mac_address = eth_mac_addr,
1484 .ndo_validate_addr = eth_validate_addr,
1485};
1486
1487static struct usb_driver pegasus_driver = {
1488 .name = driver_name,
1489 .probe = pegasus_probe,
1490 .disconnect = pegasus_disconnect,
1491 .id_table = pegasus_ids,
1492 .suspend = pegasus_suspend,
1493 .resume = pegasus_resume,
1494};
1495
1496static void __init parse_id(char *id)
1497{
1498 unsigned int vendor_id = 0, device_id = 0, flags = 0, i = 0;
1499 char *token, *name = NULL;
1500
1501 if ((token = strsep(&id, ":")) != NULL)
1502 name = token;
1503 /* name now points to a null terminated string*/
1504 if ((token = strsep(&id, ":")) != NULL)
1505 vendor_id = simple_strtoul(token, NULL, 16);
1506 if ((token = strsep(&id, ":")) != NULL)
1507 device_id = simple_strtoul(token, NULL, 16);
1508 flags = simple_strtoul(id, NULL, 16);
1509 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1510 driver_name, name, vendor_id, device_id, flags);
1511
1512 if (vendor_id > 0x10000 || vendor_id == 0)
1513 return;
1514 if (device_id > 0x10000 || device_id == 0)
1515 return;
1516
1517 for (i = 0; usb_dev_id[i].name; i++);
1518 usb_dev_id[i].name = name;
1519 usb_dev_id[i].vendor = vendor_id;
1520 usb_dev_id[i].device = device_id;
1521 usb_dev_id[i].private = flags;
1522 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1523 pegasus_ids[i].idVendor = vendor_id;
1524 pegasus_ids[i].idProduct = device_id;
1525}
1526
1527static int __init pegasus_init(void)
1528{
1529 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1530 if (devid)
1531 parse_id(devid);
1532 return usb_register(&pegasus_driver);
1533}
1534
1535static void __exit pegasus_exit(void)
1536{
1537 usb_deregister(&pegasus_driver);
1538}
1539
1540module_init(pegasus_init);
1541module_exit(pegasus_exit);
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 1999-2021 Petko Manolov (petkan@nucleusys.com)
4 *
5 */
6
7#include <linux/sched.h>
8#include <linux/slab.h>
9#include <linux/init.h>
10#include <linux/delay.h>
11#include <linux/netdevice.h>
12#include <linux/etherdevice.h>
13#include <linux/ethtool.h>
14#include <linux/mii.h>
15#include <linux/usb.h>
16#include <linux/module.h>
17#include <asm/byteorder.h>
18#include <linux/uaccess.h>
19#include "pegasus.h"
20
21/*
22 * Version Information
23 */
24#define DRIVER_AUTHOR "Petko Manolov <petkan@nucleusys.com>"
25#define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
26
27static const char driver_name[] = "pegasus";
28
29#undef PEGASUS_WRITE_EEPROM
30#define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
31 BMSR_100FULL | BMSR_ANEGCAPABLE)
32#define CARRIER_CHECK_DELAY (2 * HZ)
33
34static bool loopback;
35static bool mii_mode;
36static char *devid;
37
38static struct usb_eth_dev usb_dev_id[] = {
39#define PEGASUS_DEV(pn, vid, pid, flags) \
40 {.name = pn, .vendor = vid, .device = pid, .private = flags},
41#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
42 PEGASUS_DEV(pn, vid, pid, flags)
43#include "pegasus.h"
44#undef PEGASUS_DEV
45#undef PEGASUS_DEV_CLASS
46 {NULL, 0, 0, 0},
47 {NULL, 0, 0, 0}
48};
49
50static struct usb_device_id pegasus_ids[] = {
51#define PEGASUS_DEV(pn, vid, pid, flags) \
52 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
53/*
54 * The Belkin F8T012xx1 bluetooth adaptor has the same vendor and product
55 * IDs as the Belkin F5D5050, so we need to teach the pegasus driver to
56 * ignore adaptors belonging to the "Wireless" class 0xE0. For this one
57 * case anyway, seeing as the pegasus is for "Wired" adaptors.
58 */
59#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
60 {.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_CLASS), \
61 .idVendor = vid, .idProduct = pid, .bDeviceClass = dclass},
62#include "pegasus.h"
63#undef PEGASUS_DEV
64#undef PEGASUS_DEV_CLASS
65 {},
66 {}
67};
68
69MODULE_AUTHOR(DRIVER_AUTHOR);
70MODULE_DESCRIPTION(DRIVER_DESC);
71MODULE_LICENSE("GPL");
72module_param(loopback, bool, 0);
73module_param(mii_mode, bool, 0);
74module_param(devid, charp, 0);
75MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
76MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
77MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
78
79/* use ethtool to change the level for any given device */
80static int msg_level = -1;
81module_param(msg_level, int, 0);
82MODULE_PARM_DESC(msg_level, "Override default message level");
83
84MODULE_DEVICE_TABLE(usb, pegasus_ids);
85static const struct net_device_ops pegasus_netdev_ops;
86
87/*****/
88
89static void async_ctrl_callback(struct urb *urb)
90{
91 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
92 int status = urb->status;
93
94 if (status < 0)
95 dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status);
96 kfree(req);
97 usb_free_urb(urb);
98}
99
100static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *data)
101{
102 return usb_control_msg_recv(pegasus->usb, 0, PEGASUS_REQ_GET_REGS,
103 PEGASUS_REQT_READ, 0, indx, data, size,
104 1000, GFP_NOIO);
105}
106
107static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size,
108 const void *data)
109{
110 int ret;
111
112 ret = usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REGS,
113 PEGASUS_REQT_WRITE, 0, indx, data, size,
114 1000, GFP_NOIO);
115 if (ret < 0)
116 netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n", __func__, ret);
117
118 return ret;
119}
120
121/*
122 * There is only one way to write to a single ADM8511 register and this is via
123 * specific control request. 'data' is ignored by the device, but it is here to
124 * not break the API.
125 */
126static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data)
127{
128 void *buf = &data;
129 int ret;
130
131 ret = usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REG,
132 PEGASUS_REQT_WRITE, data, indx, buf, 1,
133 1000, GFP_NOIO);
134 if (ret < 0)
135 netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n", __func__, ret);
136
137 return ret;
138}
139
140static int update_eth_regs_async(pegasus_t *pegasus)
141{
142 int ret = -ENOMEM;
143 struct urb *async_urb;
144 struct usb_ctrlrequest *req;
145
146 req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
147 if (req == NULL)
148 return ret;
149
150 async_urb = usb_alloc_urb(0, GFP_ATOMIC);
151 if (async_urb == NULL) {
152 kfree(req);
153 return ret;
154 }
155 req->bRequestType = PEGASUS_REQT_WRITE;
156 req->bRequest = PEGASUS_REQ_SET_REGS;
157 req->wValue = cpu_to_le16(0);
158 req->wIndex = cpu_to_le16(EthCtrl0);
159 req->wLength = cpu_to_le16(3);
160
161 usb_fill_control_urb(async_urb, pegasus->usb,
162 usb_sndctrlpipe(pegasus->usb, 0), (void *)req,
163 pegasus->eth_regs, 3, async_ctrl_callback, req);
164
165 ret = usb_submit_urb(async_urb, GFP_ATOMIC);
166 if (ret) {
167 if (ret == -ENODEV)
168 netif_device_detach(pegasus->net);
169 netif_err(pegasus, drv, pegasus->net,
170 "%s returned %d\n", __func__, ret);
171 }
172 return ret;
173}
174
175static int __mii_op(pegasus_t *p, __u8 phy, __u8 indx, __u16 *regd, __u8 cmd)
176{
177 int i, ret;
178 __le16 regdi;
179 __u8 data[4] = { phy, 0, 0, indx };
180
181 if (cmd & PHY_WRITE) {
182 __le16 *t = (__le16 *) & data[1];
183 *t = cpu_to_le16(*regd);
184 }
185 set_register(p, PhyCtrl, 0);
186 set_registers(p, PhyAddr, sizeof(data), data);
187 set_register(p, PhyCtrl, (indx | cmd));
188 for (i = 0; i < REG_TIMEOUT; i++) {
189 ret = get_registers(p, PhyCtrl, 1, data);
190 if (ret < 0)
191 goto fail;
192 if (data[0] & PHY_DONE)
193 break;
194 }
195 if (i >= REG_TIMEOUT) {
196 ret = -ETIMEDOUT;
197 goto fail;
198 }
199 if (cmd & PHY_READ) {
200 ret = get_registers(p, PhyData, 2, ®di);
201 if (ret < 0)
202 goto fail;
203 *regd = le16_to_cpu(regdi);
204 }
205 return 0;
206fail:
207 netif_dbg(p, drv, p->net, "%s failed\n", __func__);
208 return ret;
209}
210
211/* Returns non-negative int on success, error on failure */
212static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
213{
214 return __mii_op(pegasus, phy, indx, regd, PHY_READ);
215}
216
217/* Returns zero on success, error on failure */
218static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
219{
220 return __mii_op(pegasus, phy, indx, regd, PHY_WRITE);
221}
222
223static int mdio_read(struct net_device *dev, int phy_id, int loc)
224{
225 pegasus_t *pegasus = netdev_priv(dev);
226 int ret;
227 u16 res;
228
229 ret = read_mii_word(pegasus, phy_id, loc, &res);
230 if (ret < 0)
231 return ret;
232
233 return (int)res;
234}
235
236static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
237{
238 pegasus_t *pegasus = netdev_priv(dev);
239 u16 data = val;
240
241 write_mii_word(pegasus, phy_id, loc, &data);
242}
243
244static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
245{
246 int ret, i;
247 __le16 retdatai;
248 __u8 tmp = 0;
249
250 set_register(pegasus, EpromCtrl, 0);
251 set_register(pegasus, EpromOffset, index);
252 set_register(pegasus, EpromCtrl, EPROM_READ);
253
254 for (i = 0; i < REG_TIMEOUT; i++) {
255 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
256 if (ret < 0)
257 goto fail;
258 if (tmp & EPROM_DONE)
259 break;
260 }
261 if (i >= REG_TIMEOUT) {
262 ret = -ETIMEDOUT;
263 goto fail;
264 }
265
266 ret = get_registers(pegasus, EpromData, 2, &retdatai);
267 if (ret < 0)
268 goto fail;
269 *retdata = le16_to_cpu(retdatai);
270 return ret;
271
272fail:
273 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
274 return ret;
275}
276
277#ifdef PEGASUS_WRITE_EEPROM
278static inline void enable_eprom_write(pegasus_t *pegasus)
279{
280 __u8 tmp;
281
282 get_registers(pegasus, EthCtrl2, 1, &tmp);
283 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
284}
285
286static inline void disable_eprom_write(pegasus_t *pegasus)
287{
288 __u8 tmp;
289
290 get_registers(pegasus, EthCtrl2, 1, &tmp);
291 set_register(pegasus, EpromCtrl, 0);
292 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
293}
294
295static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data)
296{
297 int i;
298 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
299 int ret;
300 __le16 le_data = cpu_to_le16(data);
301
302 set_registers(pegasus, EpromOffset, 4, d);
303 enable_eprom_write(pegasus);
304 set_register(pegasus, EpromOffset, index);
305 set_registers(pegasus, EpromData, 2, &le_data);
306 set_register(pegasus, EpromCtrl, EPROM_WRITE);
307
308 for (i = 0; i < REG_TIMEOUT; i++) {
309 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
310 if (ret == -ESHUTDOWN)
311 goto fail;
312 if (tmp & EPROM_DONE)
313 break;
314 }
315 disable_eprom_write(pegasus);
316 if (i >= REG_TIMEOUT)
317 goto fail;
318
319 return ret;
320
321fail:
322 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
323 return -ETIMEDOUT;
324}
325#endif /* PEGASUS_WRITE_EEPROM */
326
327static inline int get_node_id(pegasus_t *pegasus, u8 *id)
328{
329 int i, ret;
330 u16 w16;
331
332 for (i = 0; i < 3; i++) {
333 ret = read_eprom_word(pegasus, i, &w16);
334 if (ret < 0)
335 return ret;
336 ((__le16 *) id)[i] = cpu_to_le16(w16);
337 }
338
339 return 0;
340}
341
342static void set_ethernet_addr(pegasus_t *pegasus)
343{
344 int ret;
345 u8 node_id[6];
346
347 if (pegasus->features & PEGASUS_II) {
348 ret = get_registers(pegasus, 0x10, sizeof(node_id), node_id);
349 if (ret < 0)
350 goto err;
351 } else {
352 ret = get_node_id(pegasus, node_id);
353 if (ret < 0)
354 goto err;
355 ret = set_registers(pegasus, EthID, sizeof(node_id), node_id);
356 if (ret < 0)
357 goto err;
358 }
359
360 eth_hw_addr_set(pegasus->net, node_id);
361
362 return;
363err:
364 eth_hw_addr_random(pegasus->net);
365 netif_dbg(pegasus, drv, pegasus->net, "software assigned MAC address.\n");
366
367 return;
368}
369
370static inline int reset_mac(pegasus_t *pegasus)
371{
372 int ret, i;
373 __u8 data = 0x8;
374
375 set_register(pegasus, EthCtrl1, data);
376 for (i = 0; i < REG_TIMEOUT; i++) {
377 ret = get_registers(pegasus, EthCtrl1, 1, &data);
378 if (ret < 0)
379 goto fail;
380 if (~data & 0x08) {
381 if (loopback)
382 break;
383 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
384 set_register(pegasus, Gpio1, 0x34);
385 else
386 set_register(pegasus, Gpio1, 0x26);
387 set_register(pegasus, Gpio0, pegasus->features);
388 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
389 break;
390 }
391 }
392 if (i == REG_TIMEOUT)
393 return -ETIMEDOUT;
394
395 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
396 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
397 set_register(pegasus, Gpio0, 0x24);
398 set_register(pegasus, Gpio0, 0x26);
399 }
400 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
401 __u16 auxmode;
402 ret = read_mii_word(pegasus, 3, 0x1b, &auxmode);
403 if (ret < 0)
404 goto fail;
405 auxmode |= 4;
406 write_mii_word(pegasus, 3, 0x1b, &auxmode);
407 }
408
409 return 0;
410fail:
411 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
412 return ret;
413}
414
415static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
416{
417 pegasus_t *pegasus = netdev_priv(dev);
418 int ret;
419 __u16 linkpart;
420 __u8 data[4];
421
422 ret = read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
423 if (ret < 0)
424 goto fail;
425 data[0] = 0xc8; /* TX & RX enable, append status, no CRC */
426 data[1] = 0;
427 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
428 data[1] |= 0x20; /* set full duplex */
429 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
430 data[1] |= 0x10; /* set 100 Mbps */
431 if (mii_mode)
432 data[1] = 0;
433 data[2] = loopback ? 0x09 : 0x01;
434
435 memcpy(pegasus->eth_regs, data, sizeof(data));
436 ret = set_registers(pegasus, EthCtrl0, 3, data);
437
438 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
439 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
440 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
441 u16 auxmode;
442 ret = read_mii_word(pegasus, 0, 0x1b, &auxmode);
443 if (ret < 0)
444 goto fail;
445 auxmode |= 4;
446 write_mii_word(pegasus, 0, 0x1b, &auxmode);
447 }
448
449 return ret;
450fail:
451 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
452 return ret;
453}
454
455static void read_bulk_callback(struct urb *urb)
456{
457 pegasus_t *pegasus = urb->context;
458 struct net_device *net;
459 u8 *buf = urb->transfer_buffer;
460 int rx_status, count = urb->actual_length;
461 int status = urb->status;
462 __u16 pkt_len;
463
464 if (!pegasus)
465 return;
466
467 net = pegasus->net;
468 if (!netif_device_present(net) || !netif_running(net))
469 return;
470
471 switch (status) {
472 case 0:
473 break;
474 case -ETIME:
475 netif_dbg(pegasus, rx_err, net, "reset MAC\n");
476 pegasus->flags &= ~PEGASUS_RX_BUSY;
477 break;
478 case -EPIPE: /* stall, or disconnect from TT */
479 /* FIXME schedule work to clear the halt */
480 netif_warn(pegasus, rx_err, net, "no rx stall recovery\n");
481 return;
482 case -ENOENT:
483 case -ECONNRESET:
484 case -ESHUTDOWN:
485 netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status);
486 return;
487 default:
488 netif_dbg(pegasus, rx_err, net, "RX status %d\n", status);
489 goto goon;
490 }
491
492 if (count < 4)
493 goto goon;
494
495 rx_status = buf[count - 2];
496 if (rx_status & 0x1c) {
497 netif_dbg(pegasus, rx_err, net,
498 "RX packet error %x\n", rx_status);
499 net->stats.rx_errors++;
500 if (rx_status & 0x04) /* runt */
501 net->stats.rx_length_errors++;
502 if (rx_status & 0x08)
503 net->stats.rx_crc_errors++;
504 if (rx_status & 0x10) /* extra bits */
505 net->stats.rx_frame_errors++;
506 goto goon;
507 }
508 if (pegasus->chip == 0x8513) {
509 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
510 pkt_len &= 0x0fff;
511 pegasus->rx_skb->data += 2;
512 } else {
513 pkt_len = buf[count - 3] << 8;
514 pkt_len += buf[count - 4];
515 pkt_len &= 0xfff;
516 pkt_len -= 4;
517 }
518
519 /*
520 * If the packet is unreasonably long, quietly drop it rather than
521 * kernel panicing by calling skb_put.
522 */
523 if (pkt_len > PEGASUS_MTU)
524 goto goon;
525
526 /*
527 * at this point we are sure pegasus->rx_skb != NULL
528 * so we go ahead and pass up the packet.
529 */
530 skb_put(pegasus->rx_skb, pkt_len);
531 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
532 netif_rx(pegasus->rx_skb);
533 net->stats.rx_packets++;
534 net->stats.rx_bytes += pkt_len;
535
536 if (pegasus->flags & PEGASUS_UNPLUG)
537 return;
538
539 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, PEGASUS_MTU,
540 GFP_ATOMIC);
541
542 if (pegasus->rx_skb == NULL)
543 goto tl_sched;
544goon:
545 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
546 usb_rcvbulkpipe(pegasus->usb, 1),
547 pegasus->rx_skb->data, PEGASUS_MTU,
548 read_bulk_callback, pegasus);
549 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
550 if (rx_status == -ENODEV)
551 netif_device_detach(pegasus->net);
552 else if (rx_status) {
553 pegasus->flags |= PEGASUS_RX_URB_FAIL;
554 goto tl_sched;
555 } else {
556 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
557 }
558
559 return;
560
561tl_sched:
562 tasklet_schedule(&pegasus->rx_tl);
563}
564
565static void rx_fixup(struct tasklet_struct *t)
566{
567 pegasus_t *pegasus = from_tasklet(pegasus, t, rx_tl);
568 int status;
569
570 if (pegasus->flags & PEGASUS_UNPLUG)
571 return;
572
573 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
574 if (pegasus->rx_skb)
575 goto try_again;
576 if (pegasus->rx_skb == NULL)
577 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
578 PEGASUS_MTU,
579 GFP_ATOMIC);
580 if (pegasus->rx_skb == NULL) {
581 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n");
582 tasklet_schedule(&pegasus->rx_tl);
583 return;
584 }
585 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
586 usb_rcvbulkpipe(pegasus->usb, 1),
587 pegasus->rx_skb->data, PEGASUS_MTU,
588 read_bulk_callback, pegasus);
589try_again:
590 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
591 if (status == -ENODEV)
592 netif_device_detach(pegasus->net);
593 else if (status) {
594 pegasus->flags |= PEGASUS_RX_URB_FAIL;
595 tasklet_schedule(&pegasus->rx_tl);
596 } else {
597 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
598 }
599}
600
601static void write_bulk_callback(struct urb *urb)
602{
603 pegasus_t *pegasus = urb->context;
604 struct net_device *net;
605 int status = urb->status;
606
607 if (!pegasus)
608 return;
609
610 net = pegasus->net;
611
612 if (!netif_device_present(net) || !netif_running(net))
613 return;
614
615 switch (status) {
616 case -EPIPE:
617 /* FIXME schedule_work() to clear the tx halt */
618 netif_stop_queue(net);
619 netif_warn(pegasus, tx_err, net, "no tx stall recovery\n");
620 return;
621 case -ENOENT:
622 case -ECONNRESET:
623 case -ESHUTDOWN:
624 netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status);
625 return;
626 default:
627 netif_info(pegasus, tx_err, net, "TX status %d\n", status);
628 fallthrough;
629 case 0:
630 break;
631 }
632
633 netif_trans_update(net); /* prevent tx timeout */
634 netif_wake_queue(net);
635}
636
637static void intr_callback(struct urb *urb)
638{
639 pegasus_t *pegasus = urb->context;
640 struct net_device *net;
641 int res, status = urb->status;
642
643 if (!pegasus)
644 return;
645 net = pegasus->net;
646
647 switch (status) {
648 case 0:
649 break;
650 case -ECONNRESET: /* unlink */
651 case -ENOENT:
652 case -ESHUTDOWN:
653 return;
654 default:
655 /* some Pegasus-I products report LOTS of data
656 * toggle errors... avoid log spamming
657 */
658 netif_dbg(pegasus, timer, net, "intr status %d\n", status);
659 }
660
661 if (urb->actual_length >= 6) {
662 u8 *d = urb->transfer_buffer;
663
664 /* byte 0 == tx_status1, reg 2B */
665 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
666 |LATE_COL|JABBER_TIMEOUT)) {
667 net->stats.tx_errors++;
668 if (d[0] & TX_UNDERRUN)
669 net->stats.tx_fifo_errors++;
670 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
671 net->stats.tx_aborted_errors++;
672 if (d[0] & LATE_COL)
673 net->stats.tx_window_errors++;
674 }
675
676 /* d[5].LINK_STATUS lies on some adapters.
677 * d[0].NO_CARRIER kicks in only with failed TX.
678 * ... so monitoring with MII may be safest.
679 */
680
681 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
682 net->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
683 }
684
685 res = usb_submit_urb(urb, GFP_ATOMIC);
686 if (res == -ENODEV)
687 netif_device_detach(pegasus->net);
688 if (res)
689 netif_err(pegasus, timer, net,
690 "can't resubmit interrupt urb, %d\n", res);
691}
692
693static void pegasus_tx_timeout(struct net_device *net, unsigned int txqueue)
694{
695 pegasus_t *pegasus = netdev_priv(net);
696 netif_warn(pegasus, timer, net, "tx timeout\n");
697 usb_unlink_urb(pegasus->tx_urb);
698 net->stats.tx_errors++;
699}
700
701static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb,
702 struct net_device *net)
703{
704 pegasus_t *pegasus = netdev_priv(net);
705 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
706 int res;
707 __u16 l16 = skb->len;
708
709 netif_stop_queue(net);
710
711 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
712 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
713 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
714 usb_sndbulkpipe(pegasus->usb, 2),
715 pegasus->tx_buff, count,
716 write_bulk_callback, pegasus);
717 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
718 netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res);
719 switch (res) {
720 case -EPIPE: /* stall, or disconnect from TT */
721 /* cleanup should already have been scheduled */
722 break;
723 case -ENODEV: /* disconnect() upcoming */
724 case -EPERM:
725 netif_device_detach(pegasus->net);
726 break;
727 default:
728 net->stats.tx_errors++;
729 netif_start_queue(net);
730 }
731 } else {
732 net->stats.tx_packets++;
733 net->stats.tx_bytes += skb->len;
734 }
735 dev_kfree_skb(skb);
736
737 return NETDEV_TX_OK;
738}
739
740static inline void disable_net_traffic(pegasus_t *pegasus)
741{
742 __le16 tmp = cpu_to_le16(0);
743
744 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp);
745}
746
747static inline int get_interrupt_interval(pegasus_t *pegasus)
748{
749 u16 data;
750 u8 interval;
751 int ret;
752
753 ret = read_eprom_word(pegasus, 4, &data);
754 if (ret < 0)
755 return ret;
756
757 interval = data >> 8;
758 if (pegasus->usb->speed != USB_SPEED_HIGH) {
759 if (interval < 0x80) {
760 netif_info(pegasus, timer, pegasus->net,
761 "intr interval changed from %ums to %ums\n",
762 interval, 0x80);
763 interval = 0x80;
764 data = (data & 0x00FF) | ((u16)interval << 8);
765#ifdef PEGASUS_WRITE_EEPROM
766 write_eprom_word(pegasus, 4, data);
767#endif
768 }
769 }
770 pegasus->intr_interval = interval;
771
772 return 0;
773}
774
775static void set_carrier(struct net_device *net)
776{
777 pegasus_t *pegasus = netdev_priv(net);
778 u16 tmp;
779
780 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
781 return;
782
783 if (tmp & BMSR_LSTATUS)
784 netif_carrier_on(net);
785 else
786 netif_carrier_off(net);
787}
788
789static void free_all_urbs(pegasus_t *pegasus)
790{
791 usb_free_urb(pegasus->intr_urb);
792 usb_free_urb(pegasus->tx_urb);
793 usb_free_urb(pegasus->rx_urb);
794}
795
796static void unlink_all_urbs(pegasus_t *pegasus)
797{
798 usb_kill_urb(pegasus->intr_urb);
799 usb_kill_urb(pegasus->tx_urb);
800 usb_kill_urb(pegasus->rx_urb);
801}
802
803static int alloc_urbs(pegasus_t *pegasus)
804{
805 int res = -ENOMEM;
806
807 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
808 if (!pegasus->rx_urb) {
809 return res;
810 }
811 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
812 if (!pegasus->tx_urb) {
813 usb_free_urb(pegasus->rx_urb);
814 return res;
815 }
816 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
817 if (!pegasus->intr_urb) {
818 usb_free_urb(pegasus->tx_urb);
819 usb_free_urb(pegasus->rx_urb);
820 return res;
821 }
822
823 return 0;
824}
825
826static int pegasus_open(struct net_device *net)
827{
828 pegasus_t *pegasus = netdev_priv(net);
829 int res=-ENOMEM;
830
831 if (pegasus->rx_skb == NULL)
832 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
833 PEGASUS_MTU,
834 GFP_KERNEL);
835 if (!pegasus->rx_skb)
836 goto exit;
837
838 set_registers(pegasus, EthID, 6, net->dev_addr);
839
840 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
841 usb_rcvbulkpipe(pegasus->usb, 1),
842 pegasus->rx_skb->data, PEGASUS_MTU,
843 read_bulk_callback, pegasus);
844 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
845 if (res == -ENODEV)
846 netif_device_detach(pegasus->net);
847 netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res);
848 goto exit;
849 }
850
851 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
852 usb_rcvintpipe(pegasus->usb, 3),
853 pegasus->intr_buff, sizeof(pegasus->intr_buff),
854 intr_callback, pegasus, pegasus->intr_interval);
855 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
856 if (res == -ENODEV)
857 netif_device_detach(pegasus->net);
858 netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res);
859 usb_kill_urb(pegasus->rx_urb);
860 goto exit;
861 }
862 res = enable_net_traffic(net, pegasus->usb);
863 if (res < 0) {
864 netif_dbg(pegasus, ifup, net,
865 "can't enable_net_traffic() - %d\n", res);
866 res = -EIO;
867 usb_kill_urb(pegasus->rx_urb);
868 usb_kill_urb(pegasus->intr_urb);
869 goto exit;
870 }
871 set_carrier(net);
872 netif_start_queue(net);
873 netif_dbg(pegasus, ifup, net, "open\n");
874 res = 0;
875exit:
876 return res;
877}
878
879static int pegasus_close(struct net_device *net)
880{
881 pegasus_t *pegasus = netdev_priv(net);
882
883 netif_stop_queue(net);
884 if (!(pegasus->flags & PEGASUS_UNPLUG))
885 disable_net_traffic(pegasus);
886 tasklet_kill(&pegasus->rx_tl);
887 unlink_all_urbs(pegasus);
888
889 return 0;
890}
891
892static void pegasus_get_drvinfo(struct net_device *dev,
893 struct ethtool_drvinfo *info)
894{
895 pegasus_t *pegasus = netdev_priv(dev);
896
897 strscpy(info->driver, driver_name, sizeof(info->driver));
898 usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info));
899}
900
901/* also handles three patterns of some kind in hardware */
902#define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
903
904static void
905pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
906{
907 pegasus_t *pegasus = netdev_priv(dev);
908
909 wol->supported = WAKE_MAGIC | WAKE_PHY;
910 wol->wolopts = pegasus->wolopts;
911}
912
913static int
914pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
915{
916 pegasus_t *pegasus = netdev_priv(dev);
917 u8 reg78 = 0x04;
918 int ret;
919
920 if (wol->wolopts & ~WOL_SUPPORTED)
921 return -EINVAL;
922
923 if (wol->wolopts & WAKE_MAGIC)
924 reg78 |= 0x80;
925 if (wol->wolopts & WAKE_PHY)
926 reg78 |= 0x40;
927 /* FIXME this 0x10 bit still needs to get set in the chip... */
928 if (wol->wolopts)
929 pegasus->eth_regs[0] |= 0x10;
930 else
931 pegasus->eth_regs[0] &= ~0x10;
932 pegasus->wolopts = wol->wolopts;
933
934 ret = set_register(pegasus, WakeupControl, reg78);
935 if (!ret)
936 ret = device_set_wakeup_enable(&pegasus->usb->dev,
937 wol->wolopts);
938 return ret;
939}
940
941static inline void pegasus_reset_wol(struct net_device *dev)
942{
943 struct ethtool_wolinfo wol;
944
945 memset(&wol, 0, sizeof wol);
946 (void) pegasus_set_wol(dev, &wol);
947}
948
949static int
950pegasus_get_link_ksettings(struct net_device *dev,
951 struct ethtool_link_ksettings *ecmd)
952{
953 pegasus_t *pegasus;
954
955 pegasus = netdev_priv(dev);
956 mii_ethtool_get_link_ksettings(&pegasus->mii, ecmd);
957 return 0;
958}
959
960static int
961pegasus_set_link_ksettings(struct net_device *dev,
962 const struct ethtool_link_ksettings *ecmd)
963{
964 pegasus_t *pegasus = netdev_priv(dev);
965 return mii_ethtool_set_link_ksettings(&pegasus->mii, ecmd);
966}
967
968static int pegasus_nway_reset(struct net_device *dev)
969{
970 pegasus_t *pegasus = netdev_priv(dev);
971 return mii_nway_restart(&pegasus->mii);
972}
973
974static u32 pegasus_get_link(struct net_device *dev)
975{
976 pegasus_t *pegasus = netdev_priv(dev);
977 return mii_link_ok(&pegasus->mii);
978}
979
980static u32 pegasus_get_msglevel(struct net_device *dev)
981{
982 pegasus_t *pegasus = netdev_priv(dev);
983 return pegasus->msg_enable;
984}
985
986static void pegasus_set_msglevel(struct net_device *dev, u32 v)
987{
988 pegasus_t *pegasus = netdev_priv(dev);
989 pegasus->msg_enable = v;
990}
991
992static const struct ethtool_ops ops = {
993 .get_drvinfo = pegasus_get_drvinfo,
994 .nway_reset = pegasus_nway_reset,
995 .get_link = pegasus_get_link,
996 .get_msglevel = pegasus_get_msglevel,
997 .set_msglevel = pegasus_set_msglevel,
998 .get_wol = pegasus_get_wol,
999 .set_wol = pegasus_set_wol,
1000 .get_link_ksettings = pegasus_get_link_ksettings,
1001 .set_link_ksettings = pegasus_set_link_ksettings,
1002};
1003
1004static int pegasus_siocdevprivate(struct net_device *net, struct ifreq *rq,
1005 void __user *udata, int cmd)
1006{
1007 __u16 *data = (__u16 *) &rq->ifr_ifru;
1008 pegasus_t *pegasus = netdev_priv(net);
1009 int res;
1010
1011 switch (cmd) {
1012 case SIOCDEVPRIVATE:
1013 data[0] = pegasus->phy;
1014 fallthrough;
1015 case SIOCDEVPRIVATE + 1:
1016 res = read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1017 break;
1018 case SIOCDEVPRIVATE + 2:
1019 if (!capable(CAP_NET_ADMIN))
1020 return -EPERM;
1021 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, &data[2]);
1022 res = 0;
1023 break;
1024 default:
1025 res = -EOPNOTSUPP;
1026 }
1027 return res;
1028}
1029
1030static void pegasus_set_multicast(struct net_device *net)
1031{
1032 pegasus_t *pegasus = netdev_priv(net);
1033
1034 if (net->flags & IFF_PROMISC) {
1035 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1036 netif_info(pegasus, link, net, "Promiscuous mode enabled\n");
1037 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1038 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1039 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1040 netif_dbg(pegasus, link, net, "set allmulti\n");
1041 } else {
1042 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1043 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1044 }
1045 update_eth_regs_async(pegasus);
1046}
1047
1048static __u8 mii_phy_probe(pegasus_t *pegasus)
1049{
1050 int i, ret;
1051 __u16 tmp;
1052
1053 for (i = 0; i < 32; i++) {
1054 ret = read_mii_word(pegasus, i, MII_BMSR, &tmp);
1055 if (ret < 0)
1056 goto fail;
1057 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1058 continue;
1059 else
1060 return i;
1061 }
1062fail:
1063 return 0xff;
1064}
1065
1066static inline void setup_pegasus_II(pegasus_t *pegasus)
1067{
1068 int ret;
1069 __u8 data = 0xa5;
1070
1071 set_register(pegasus, Reg1d, 0);
1072 set_register(pegasus, Reg7b, 1);
1073 msleep(100);
1074 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1075 set_register(pegasus, Reg7b, 0);
1076 else
1077 set_register(pegasus, Reg7b, 2);
1078
1079 set_register(pegasus, 0x83, data);
1080 ret = get_registers(pegasus, 0x83, 1, &data);
1081 if (ret < 0)
1082 goto fail;
1083
1084 if (data == 0xa5)
1085 pegasus->chip = 0x8513;
1086 else
1087 pegasus->chip = 0;
1088
1089 set_register(pegasus, 0x80, 0xc0);
1090 set_register(pegasus, 0x83, 0xff);
1091 set_register(pegasus, 0x84, 0x01);
1092
1093 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1094 set_register(pegasus, Reg81, 6);
1095 else
1096 set_register(pegasus, Reg81, 2);
1097
1098 return;
1099fail:
1100 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
1101}
1102
1103static void check_carrier(struct work_struct *work)
1104{
1105 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1106 set_carrier(pegasus->net);
1107 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1108 queue_delayed_work(system_long_wq, &pegasus->carrier_check,
1109 CARRIER_CHECK_DELAY);
1110 }
1111}
1112
1113static int pegasus_blacklisted(struct usb_device *udev)
1114{
1115 struct usb_device_descriptor *udd = &udev->descriptor;
1116
1117 /* Special quirk to keep the driver from handling the Belkin Bluetooth
1118 * dongle which happens to have the same ID.
1119 */
1120 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) &&
1121 (udd->idProduct == cpu_to_le16(0x0121)) &&
1122 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
1123 (udd->bDeviceProtocol == 1))
1124 return 1;
1125
1126 return 0;
1127}
1128
1129static int pegasus_probe(struct usb_interface *intf,
1130 const struct usb_device_id *id)
1131{
1132 struct usb_device *dev = interface_to_usbdev(intf);
1133 struct net_device *net;
1134 pegasus_t *pegasus;
1135 int dev_index = id - pegasus_ids;
1136 int res = -ENOMEM;
1137
1138 if (pegasus_blacklisted(dev))
1139 return -ENODEV;
1140
1141 net = alloc_etherdev(sizeof(struct pegasus));
1142 if (!net)
1143 goto out;
1144
1145 pegasus = netdev_priv(net);
1146 pegasus->dev_index = dev_index;
1147
1148 res = alloc_urbs(pegasus);
1149 if (res < 0) {
1150 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1151 goto out1;
1152 }
1153
1154 tasklet_setup(&pegasus->rx_tl, rx_fixup);
1155
1156 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1157
1158 pegasus->intf = intf;
1159 pegasus->usb = dev;
1160 pegasus->net = net;
1161
1162
1163 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1164 net->netdev_ops = &pegasus_netdev_ops;
1165 net->ethtool_ops = &ops;
1166 pegasus->mii.dev = net;
1167 pegasus->mii.mdio_read = mdio_read;
1168 pegasus->mii.mdio_write = mdio_write;
1169 pegasus->mii.phy_id_mask = 0x1f;
1170 pegasus->mii.reg_num_mask = 0x1f;
1171 pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
1172 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1173
1174 pegasus->features = usb_dev_id[dev_index].private;
1175 res = get_interrupt_interval(pegasus);
1176 if (res)
1177 goto out2;
1178 if (reset_mac(pegasus)) {
1179 dev_err(&intf->dev, "can't reset MAC\n");
1180 res = -EIO;
1181 goto out2;
1182 }
1183 set_ethernet_addr(pegasus);
1184 if (pegasus->features & PEGASUS_II) {
1185 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1186 setup_pegasus_II(pegasus);
1187 }
1188 pegasus->phy = mii_phy_probe(pegasus);
1189 if (pegasus->phy == 0xff) {
1190 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1191 pegasus->phy = 1;
1192 }
1193 pegasus->mii.phy_id = pegasus->phy;
1194 usb_set_intfdata(intf, pegasus);
1195 SET_NETDEV_DEV(net, &intf->dev);
1196 pegasus_reset_wol(net);
1197 res = register_netdev(net);
1198 if (res)
1199 goto out3;
1200 queue_delayed_work(system_long_wq, &pegasus->carrier_check,
1201 CARRIER_CHECK_DELAY);
1202 dev_info(&intf->dev, "%s, %s, %pM\n", net->name,
1203 usb_dev_id[dev_index].name, net->dev_addr);
1204 return 0;
1205
1206out3:
1207 usb_set_intfdata(intf, NULL);
1208out2:
1209 free_all_urbs(pegasus);
1210out1:
1211 free_netdev(net);
1212out:
1213 return res;
1214}
1215
1216static void pegasus_disconnect(struct usb_interface *intf)
1217{
1218 struct pegasus *pegasus = usb_get_intfdata(intf);
1219
1220 usb_set_intfdata(intf, NULL);
1221 if (!pegasus) {
1222 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1223 return;
1224 }
1225
1226 pegasus->flags |= PEGASUS_UNPLUG;
1227 cancel_delayed_work_sync(&pegasus->carrier_check);
1228 unregister_netdev(pegasus->net);
1229 unlink_all_urbs(pegasus);
1230 free_all_urbs(pegasus);
1231 if (pegasus->rx_skb != NULL) {
1232 dev_kfree_skb(pegasus->rx_skb);
1233 pegasus->rx_skb = NULL;
1234 }
1235 free_netdev(pegasus->net);
1236}
1237
1238static int pegasus_suspend(struct usb_interface *intf, pm_message_t message)
1239{
1240 struct pegasus *pegasus = usb_get_intfdata(intf);
1241
1242 netif_device_detach(pegasus->net);
1243 cancel_delayed_work_sync(&pegasus->carrier_check);
1244 if (netif_running(pegasus->net)) {
1245 usb_kill_urb(pegasus->rx_urb);
1246 usb_kill_urb(pegasus->intr_urb);
1247 }
1248 return 0;
1249}
1250
1251static int pegasus_resume(struct usb_interface *intf)
1252{
1253 struct pegasus *pegasus = usb_get_intfdata(intf);
1254
1255 netif_device_attach(pegasus->net);
1256 if (netif_running(pegasus->net)) {
1257 pegasus->rx_urb->status = 0;
1258 pegasus->rx_urb->actual_length = 0;
1259 read_bulk_callback(pegasus->rx_urb);
1260
1261 pegasus->intr_urb->status = 0;
1262 pegasus->intr_urb->actual_length = 0;
1263 intr_callback(pegasus->intr_urb);
1264 }
1265 queue_delayed_work(system_long_wq, &pegasus->carrier_check,
1266 CARRIER_CHECK_DELAY);
1267 return 0;
1268}
1269
1270static const struct net_device_ops pegasus_netdev_ops = {
1271 .ndo_open = pegasus_open,
1272 .ndo_stop = pegasus_close,
1273 .ndo_siocdevprivate = pegasus_siocdevprivate,
1274 .ndo_start_xmit = pegasus_start_xmit,
1275 .ndo_set_rx_mode = pegasus_set_multicast,
1276 .ndo_tx_timeout = pegasus_tx_timeout,
1277 .ndo_set_mac_address = eth_mac_addr,
1278 .ndo_validate_addr = eth_validate_addr,
1279};
1280
1281static struct usb_driver pegasus_driver = {
1282 .name = driver_name,
1283 .probe = pegasus_probe,
1284 .disconnect = pegasus_disconnect,
1285 .id_table = pegasus_ids,
1286 .suspend = pegasus_suspend,
1287 .resume = pegasus_resume,
1288 .disable_hub_initiated_lpm = 1,
1289};
1290
1291static void __init parse_id(char *id)
1292{
1293 unsigned int vendor_id = 0, device_id = 0, flags = 0, i = 0;
1294 char *token, *name = NULL;
1295
1296 if ((token = strsep(&id, ":")) != NULL)
1297 name = token;
1298 /* name now points to a null terminated string*/
1299 if ((token = strsep(&id, ":")) != NULL)
1300 vendor_id = simple_strtoul(token, NULL, 16);
1301 if ((token = strsep(&id, ":")) != NULL)
1302 device_id = simple_strtoul(token, NULL, 16);
1303 flags = simple_strtoul(id, NULL, 16);
1304 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1305 driver_name, name, vendor_id, device_id, flags);
1306
1307 if (vendor_id > 0x10000 || vendor_id == 0)
1308 return;
1309 if (device_id > 0x10000 || device_id == 0)
1310 return;
1311
1312 for (i = 0; usb_dev_id[i].name; i++);
1313 usb_dev_id[i].name = name;
1314 usb_dev_id[i].vendor = vendor_id;
1315 usb_dev_id[i].device = device_id;
1316 usb_dev_id[i].private = flags;
1317 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1318 pegasus_ids[i].idVendor = vendor_id;
1319 pegasus_ids[i].idProduct = device_id;
1320}
1321
1322static int __init pegasus_init(void)
1323{
1324 pr_info("%s: " DRIVER_DESC "\n", driver_name);
1325 if (devid)
1326 parse_id(devid);
1327 return usb_register(&pegasus_driver);
1328}
1329
1330static void __exit pegasus_exit(void)
1331{
1332 usb_deregister(&pegasus_driver);
1333}
1334
1335module_init(pegasus_init);
1336module_exit(pegasus_exit);