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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / usb / pegasus.c
blob8783e2ab3ec062266e162f5b0583e0343129e2ef
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 1999-2013 Petko Manolov (petkan@nucleusys.com)
4 *
5 * ChangeLog:
6 * .... Most of the time spent on reading sources & docs.
7 * v0.2.x First official release for the Linux kernel.
8 * v0.3.0 Beutified and structured, some bugs fixed.
9 * v0.3.x URBifying bulk requests and bugfixing. First relatively
10 * stable release. Still can touch device's registers only
11 * from top-halves.
12 * v0.4.0 Control messages remained unurbified are now URBs.
13 * Now we can touch the HW at any time.
14 * v0.4.9 Control urbs again use process context to wait. Argh...
15 * Some long standing bugs (enable_net_traffic) fixed.
16 * Also nasty trick about resubmiting control urb from
17 * interrupt context used. Please let me know how it
18 * behaves. Pegasus II support added since this version.
19 * TODO: suppressing HCD warnings spewage on disconnect.
20 * v0.4.13 Ethernet address is now set at probe(), not at open()
21 * time as this seems to break dhcpd.
22 * v0.5.0 branch to 2.5.x kernels
23 * v0.5.1 ethtool support added
24 * v0.5.5 rx socket buffers are in a pool and the their allocation
25 * is out of the interrupt routine.
26 * ...
27 * v0.9.3 simplified [get|set]_register(s), async update registers
28 * logic revisited, receive skb_pool removed.
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 <linux/uaccess.h>
43 #include "pegasus.h"
44
45 /*
46 * Version Information
47 */
48 #define DRIVER_VERSION "v0.9.3 (2013/04/25)"
49 #define DRIVER_AUTHOR "Petko Manolov <petkan@nucleusys.com>"
50 #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
51
52 static 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
58 static bool loopback;
59 static bool mii_mode;
60 static char *devid;
61
62 static 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
74 static 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
93 MODULE_AUTHOR(DRIVER_AUTHOR);
94 MODULE_DESCRIPTION(DRIVER_DESC);
95 MODULE_LICENSE("GPL");
96 module_param(loopback, bool, 0);
97 module_param(mii_mode, bool, 0);
98 module_param(devid, charp, 0);
99 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
100 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
101 MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
102
103 /* use ethtool to change the level for any given device */
104 static int msg_level = -1;
105 module_param(msg_level, int, 0);
106 MODULE_PARM_DESC(msg_level, "Override default message level");
107
108 MODULE_DEVICE_TABLE(usb, pegasus_ids);
109 static const struct net_device_ops pegasus_netdev_ops;
110
111 /*****/
112
113 static void async_ctrl_callback(struct urb *urb)
114 {
115 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
116 int status = urb->status;
117
118 if (status < 0)
119 dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status);
120 kfree(req);
121 usb_free_urb(urb);
122 }
123
124 static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *data)
125 {
126 u8 *buf;
127 int ret;
128
129 buf = kmalloc(size, GFP_NOIO);
130 if (!buf)
131 return -ENOMEM;
132
133 ret = usb_control_msg(pegasus->usb, usb_rcvctrlpipe(pegasus->usb, 0),
134 PEGASUS_REQ_GET_REGS, PEGASUS_REQT_READ, 0,
135 indx, buf, size, 1000);
136 if (ret < 0)
137 netif_dbg(pegasus, drv, pegasus->net,
138 "%s returned %d\n", __func__, ret);
139 else if (ret <= size)
140 memcpy(data, buf, ret);
141 kfree(buf);
142 return ret;
143 }
144
145 static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size,
146 const void *data)
147 {
148 u8 *buf;
149 int ret;
150
151 buf = kmemdup(data, size, GFP_NOIO);
152 if (!buf)
153 return -ENOMEM;
154
155 ret = usb_control_msg(pegasus->usb, usb_sndctrlpipe(pegasus->usb, 0),
156 PEGASUS_REQ_SET_REGS, PEGASUS_REQT_WRITE, 0,
157 indx, buf, size, 100);
158 if (ret < 0)
159 netif_dbg(pegasus, drv, pegasus->net,
160 "%s returned %d\n", __func__, ret);
161 kfree(buf);
162 return ret;
163 }
164
165 static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data)
166 {
167 u8 *buf;
168 int ret;
169
170 buf = kmemdup(&data, 1, GFP_NOIO);
171 if (!buf)
172 return -ENOMEM;
173
174 ret = usb_control_msg(pegasus->usb, usb_sndctrlpipe(pegasus->usb, 0),
175 PEGASUS_REQ_SET_REG, PEGASUS_REQT_WRITE, data,
176 indx, buf, 1, 1000);
177 if (ret < 0)
178 netif_dbg(pegasus, drv, pegasus->net,
179 "%s returned %d\n", __func__, ret);
180 kfree(buf);
181 return ret;
182 }
183
184 static int update_eth_regs_async(pegasus_t *pegasus)
185 {
186 int ret = -ENOMEM;
187 struct urb *async_urb;
188 struct usb_ctrlrequest *req;
189
190 req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
191 if (req == NULL)
192 return ret;
193
194 async_urb = usb_alloc_urb(0, GFP_ATOMIC);
195 if (async_urb == NULL) {
196 kfree(req);
197 return ret;
198 }
199 req->bRequestType = PEGASUS_REQT_WRITE;
200 req->bRequest = PEGASUS_REQ_SET_REGS;
201 req->wValue = cpu_to_le16(0);
202 req->wIndex = cpu_to_le16(EthCtrl0);
203 req->wLength = cpu_to_le16(3);
204
205 usb_fill_control_urb(async_urb, pegasus->usb,
206 usb_sndctrlpipe(pegasus->usb, 0), (void *)req,
207 pegasus->eth_regs, 3, async_ctrl_callback, req);
208
209 ret = usb_submit_urb(async_urb, GFP_ATOMIC);
210 if (ret) {
211 if (ret == -ENODEV)
212 netif_device_detach(pegasus->net);
213 netif_err(pegasus, drv, pegasus->net,
214 "%s returned %d\n", __func__, ret);
215 }
216 return ret;
217 }
218
219 static int __mii_op(pegasus_t *p, __u8 phy, __u8 indx, __u16 *regd, __u8 cmd)
220 {
221 int i;
222 __u8 data[4] = { phy, 0, 0, indx };
223 __le16 regdi;
224 int ret = -ETIMEDOUT;
225
226 if (cmd & PHY_WRITE) {
227 __le16 *t = (__le16 *) & data[1];
228 *t = cpu_to_le16(*regd);
229 }
230 set_register(p, PhyCtrl, 0);
231 set_registers(p, PhyAddr, sizeof(data), data);
232 set_register(p, PhyCtrl, (indx | cmd));
233 for (i = 0; i < REG_TIMEOUT; i++) {
234 ret = get_registers(p, PhyCtrl, 1, data);
235 if (ret < 0)
236 goto fail;
237 if (data[0] & PHY_DONE)
238 break;
239 }
240 if (i >= REG_TIMEOUT)
241 goto fail;
242 if (cmd & PHY_READ) {
243 ret = get_registers(p, PhyData, 2, &regdi);
244 *regd = le16_to_cpu(regdi);
245 return ret;
246 }
247 return 0;
248 fail:
249 netif_dbg(p, drv, p->net, "%s failed\n", __func__);
250 return ret;
251 }
252
253 /* Returns non-negative int on success, error on failure */
254 static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
255 {
256 return __mii_op(pegasus, phy, indx, regd, PHY_READ);
257 }
258
259 /* Returns zero on success, error on failure */
260 static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
261 {
262 return __mii_op(pegasus, phy, indx, regd, PHY_WRITE);
263 }
264
265 static int mdio_read(struct net_device *dev, int phy_id, int loc)
266 {
267 pegasus_t *pegasus = netdev_priv(dev);
268 u16 res;
269
270 read_mii_word(pegasus, phy_id, loc, &res);
271 return (int)res;
272 }
273
274 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
275 {
276 pegasus_t *pegasus = netdev_priv(dev);
277 u16 data = val;
278
279 write_mii_word(pegasus, phy_id, loc, &data);
280 }
281
282 static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
283 {
284 int i;
285 __u8 tmp = 0;
286 __le16 retdatai;
287 int ret;
288
289 set_register(pegasus, EpromCtrl, 0);
290 set_register(pegasus, EpromOffset, index);
291 set_register(pegasus, EpromCtrl, EPROM_READ);
292
293 for (i = 0; i < REG_TIMEOUT; i++) {
294 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
295 if (tmp & EPROM_DONE)
296 break;
297 if (ret == -ESHUTDOWN)
298 goto fail;
299 }
300 if (i >= REG_TIMEOUT)
301 goto fail;
302
303 ret = get_registers(pegasus, EpromData, 2, &retdatai);
304 *retdata = le16_to_cpu(retdatai);
305 return ret;
306
307 fail:
308 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
309 return -ETIMEDOUT;
310 }
311
312 #ifdef PEGASUS_WRITE_EEPROM
313 static inline void enable_eprom_write(pegasus_t *pegasus)
314 {
315 __u8 tmp;
316
317 get_registers(pegasus, EthCtrl2, 1, &tmp);
318 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
319 }
320
321 static inline void disable_eprom_write(pegasus_t *pegasus)
322 {
323 __u8 tmp;
324
325 get_registers(pegasus, EthCtrl2, 1, &tmp);
326 set_register(pegasus, EpromCtrl, 0);
327 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
328 }
329
330 static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data)
331 {
332 int i;
333 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
334 int ret;
335 __le16 le_data = cpu_to_le16(data);
336
337 set_registers(pegasus, EpromOffset, 4, d);
338 enable_eprom_write(pegasus);
339 set_register(pegasus, EpromOffset, index);
340 set_registers(pegasus, EpromData, 2, &le_data);
341 set_register(pegasus, EpromCtrl, EPROM_WRITE);
342
343 for (i = 0; i < REG_TIMEOUT; i++) {
344 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
345 if (ret == -ESHUTDOWN)
346 goto fail;
347 if (tmp & EPROM_DONE)
348 break;
349 }
350 disable_eprom_write(pegasus);
351 if (i >= REG_TIMEOUT)
352 goto fail;
353
354 return ret;
355
356 fail:
357 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
358 return -ETIMEDOUT;
359 }
360 #endif /* PEGASUS_WRITE_EEPROM */
361
362 static inline void get_node_id(pegasus_t *pegasus, __u8 *id)
363 {
364 int i;
365 __u16 w16;
366
367 for (i = 0; i < 3; i++) {
368 read_eprom_word(pegasus, i, &w16);
369 ((__le16 *) id)[i] = cpu_to_le16(w16);
370 }
371 }
372
373 static void set_ethernet_addr(pegasus_t *pegasus)
374 {
375 __u8 node_id[6];
376
377 if (pegasus->features & PEGASUS_II) {
378 get_registers(pegasus, 0x10, sizeof(node_id), node_id);
379 } else {
380 get_node_id(pegasus, node_id);
381 set_registers(pegasus, EthID, sizeof(node_id), node_id);
382 }
383 memcpy(pegasus->net->dev_addr, node_id, sizeof(node_id));
384 }
385
386 static inline int reset_mac(pegasus_t *pegasus)
387 {
388 __u8 data = 0x8;
389 int i;
390
391 set_register(pegasus, EthCtrl1, data);
392 for (i = 0; i < REG_TIMEOUT; i++) {
393 get_registers(pegasus, EthCtrl1, 1, &data);
394 if (~data & 0x08) {
395 if (loopback)
396 break;
397 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
398 set_register(pegasus, Gpio1, 0x34);
399 else
400 set_register(pegasus, Gpio1, 0x26);
401 set_register(pegasus, Gpio0, pegasus->features);
402 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
403 break;
404 }
405 }
406 if (i == REG_TIMEOUT)
407 return -ETIMEDOUT;
408
409 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
410 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
411 set_register(pegasus, Gpio0, 0x24);
412 set_register(pegasus, Gpio0, 0x26);
413 }
414 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
415 __u16 auxmode;
416 read_mii_word(pegasus, 3, 0x1b, &auxmode);
417 auxmode |= 4;
418 write_mii_word(pegasus, 3, 0x1b, &auxmode);
419 }
420
421 return 0;
422 }
423
424 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
425 {
426 __u16 linkpart;
427 __u8 data[4];
428 pegasus_t *pegasus = netdev_priv(dev);
429 int ret;
430
431 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
432 data[0] = 0xc8; /* TX & RX enable, append status, no CRC */
433 data[1] = 0;
434 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
435 data[1] |= 0x20; /* set full duplex */
436 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
437 data[1] |= 0x10; /* set 100 Mbps */
438 if (mii_mode)
439 data[1] = 0;
440 data[2] = loopback ? 0x09 : 0x01;
441
442 memcpy(pegasus->eth_regs, data, sizeof(data));
443 ret = set_registers(pegasus, EthCtrl0, 3, data);
444
445 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
446 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
447 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
448 u16 auxmode;
449 read_mii_word(pegasus, 0, 0x1b, &auxmode);
450 auxmode |= 4;
451 write_mii_word(pegasus, 0, 0x1b, &auxmode);
452 }
453
454 return ret;
455 }
456
457 static void read_bulk_callback(struct urb *urb)
458 {
459 pegasus_t *pegasus = urb->context;
460 struct net_device *net;
461 int rx_status, count = urb->actual_length;
462 int status = urb->status;
463 u8 *buf = urb->transfer_buffer;
464 __u16 pkt_len;
465
466 if (!pegasus)
467 return;
468
469 net = pegasus->net;
470 if (!netif_device_present(net) || !netif_running(net))
471 return;
472
473 switch (status) {
474 case 0:
475 break;
476 case -ETIME:
477 netif_dbg(pegasus, rx_err, net, "reset MAC\n");
478 pegasus->flags &= ~PEGASUS_RX_BUSY;
479 break;
480 case -EPIPE: /* stall, or disconnect from TT */
481 /* FIXME schedule work to clear the halt */
482 netif_warn(pegasus, rx_err, net, "no rx stall recovery\n");
483 return;
484 case -ENOENT:
485 case -ECONNRESET:
486 case -ESHUTDOWN:
487 netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status);
488 return;
489 default:
490 netif_dbg(pegasus, rx_err, net, "RX status %d\n", status);
491 goto goon;
492 }
493
494 if (count < 4)
495 goto goon;
496
497 rx_status = buf[count - 2];
498 if (rx_status & 0x1e) {
499 netif_dbg(pegasus, rx_err, net,
500 "RX packet error %x\n", rx_status);
501 net->stats.rx_errors++;
502 if (rx_status & 0x06) /* long or runt */
503 net->stats.rx_length_errors++;
504 if (rx_status & 0x08)
505 net->stats.rx_crc_errors++;
506 if (rx_status & 0x10) /* extra bits */
507 net->stats.rx_frame_errors++;
508 goto goon;
509 }
510 if (pegasus->chip == 0x8513) {
511 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
512 pkt_len &= 0x0fff;
513 pegasus->rx_skb->data += 2;
514 } else {
515 pkt_len = buf[count - 3] << 8;
516 pkt_len += buf[count - 4];
517 pkt_len &= 0xfff;
518 pkt_len -= 4;
519 }
520
521 /*
522 * If the packet is unreasonably long, quietly drop it rather than
523 * kernel panicing by calling skb_put.
524 */
525 if (pkt_len > PEGASUS_MTU)
526 goto goon;
527
528 /*
529 * at this point we are sure pegasus->rx_skb != NULL
530 * so we go ahead and pass up the packet.
531 */
532 skb_put(pegasus->rx_skb, pkt_len);
533 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
534 netif_rx(pegasus->rx_skb);
535 net->stats.rx_packets++;
536 net->stats.rx_bytes += pkt_len;
537
538 if (pegasus->flags & PEGASUS_UNPLUG)
539 return;
540
541 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, PEGASUS_MTU,
542 GFP_ATOMIC);
543
544 if (pegasus->rx_skb == NULL)
545 goto tl_sched;
546 goon:
547 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
548 usb_rcvbulkpipe(pegasus->usb, 1),
549 pegasus->rx_skb->data, PEGASUS_MTU,
550 read_bulk_callback, pegasus);
551 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
552 if (rx_status == -ENODEV)
553 netif_device_detach(pegasus->net);
554 else if (rx_status) {
555 pegasus->flags |= PEGASUS_RX_URB_FAIL;
556 goto tl_sched;
557 } else {
558 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
559 }
560
561 return;
562
563 tl_sched:
564 tasklet_schedule(&pegasus->rx_tl);
565 }
566
567 static void rx_fixup(unsigned long data)
568 {
569 pegasus_t *pegasus;
570 int status;
571
572 pegasus = (pegasus_t *) data;
573 if (pegasus->flags & PEGASUS_UNPLUG)
574 return;
575
576 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
577 if (pegasus->rx_skb)
578 goto try_again;
579 if (pegasus->rx_skb == NULL)
580 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
581 PEGASUS_MTU,
582 GFP_ATOMIC);
583 if (pegasus->rx_skb == NULL) {
584 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n");
585 tasklet_schedule(&pegasus->rx_tl);
586 return;
587 }
588 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
589 usb_rcvbulkpipe(pegasus->usb, 1),
590 pegasus->rx_skb->data, PEGASUS_MTU,
591 read_bulk_callback, pegasus);
592 try_again:
593 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
594 if (status == -ENODEV)
595 netif_device_detach(pegasus->net);
596 else if (status) {
597 pegasus->flags |= PEGASUS_RX_URB_FAIL;
598 tasklet_schedule(&pegasus->rx_tl);
599 } else {
600 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
601 }
602 }
603
604 static void write_bulk_callback(struct urb *urb)
605 {
606 pegasus_t *pegasus = urb->context;
607 struct net_device *net;
608 int status = urb->status;
609
610 if (!pegasus)
611 return;
612
613 net = pegasus->net;
614
615 if (!netif_device_present(net) || !netif_running(net))
616 return;
617
618 switch (status) {
619 case -EPIPE:
620 /* FIXME schedule_work() to clear the tx halt */
621 netif_stop_queue(net);
622 netif_warn(pegasus, tx_err, net, "no tx stall recovery\n");
623 return;
624 case -ENOENT:
625 case -ECONNRESET:
626 case -ESHUTDOWN:
627 netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status);
628 return;
629 default:
630 netif_info(pegasus, tx_err, net, "TX status %d\n", status);
631 /* FALL THROUGH */
632 case 0:
633 break;
634 }
635
636 netif_trans_update(net); /* prevent tx timeout */
637 netif_wake_queue(net);
638 }
639
640 static void intr_callback(struct urb *urb)
641 {
642 pegasus_t *pegasus = urb->context;
643 struct net_device *net;
644 int res, status = urb->status;
645
646 if (!pegasus)
647 return;
648 net = pegasus->net;
649
650 switch (status) {
651 case 0:
652 break;
653 case -ECONNRESET: /* unlink */
654 case -ENOENT:
655 case -ESHUTDOWN:
656 return;
657 default:
658 /* some Pegasus-I products report LOTS of data
659 * toggle errors... avoid log spamming
660 */
661 netif_dbg(pegasus, timer, net, "intr status %d\n", status);
662 }
663
664 if (urb->actual_length >= 6) {
665 u8 *d = urb->transfer_buffer;
666
667 /* byte 0 == tx_status1, reg 2B */
668 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
669 |LATE_COL|JABBER_TIMEOUT)) {
670 net->stats.tx_errors++;
671 if (d[0] & TX_UNDERRUN)
672 net->stats.tx_fifo_errors++;
673 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
674 net->stats.tx_aborted_errors++;
675 if (d[0] & LATE_COL)
676 net->stats.tx_window_errors++;
677 }
678
679 /* d[5].LINK_STATUS lies on some adapters.
680 * d[0].NO_CARRIER kicks in only with failed TX.
681 * ... so monitoring with MII may be safest.
682 */
683
684 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
685 net->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
686 }
687
688 res = usb_submit_urb(urb, GFP_ATOMIC);
689 if (res == -ENODEV)
690 netif_device_detach(pegasus->net);
691 if (res)
692 netif_err(pegasus, timer, net,
693 "can't resubmit interrupt urb, %d\n", res);
694 }
695
696 static void pegasus_tx_timeout(struct net_device *net, unsigned int txqueue)
697 {
698 pegasus_t *pegasus = netdev_priv(net);
699 netif_warn(pegasus, timer, net, "tx timeout\n");
700 usb_unlink_urb(pegasus->tx_urb);
701 net->stats.tx_errors++;
702 }
703
704 static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb,
705 struct net_device *net)
706 {
707 pegasus_t *pegasus = netdev_priv(net);
708 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
709 int res;
710 __u16 l16 = skb->len;
711
712 netif_stop_queue(net);
713
714 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
715 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
716 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
717 usb_sndbulkpipe(pegasus->usb, 2),
718 pegasus->tx_buff, count,
719 write_bulk_callback, pegasus);
720 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
721 netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res);
722 switch (res) {
723 case -EPIPE: /* stall, or disconnect from TT */
724 /* cleanup should already have been scheduled */
725 break;
726 case -ENODEV: /* disconnect() upcoming */
727 case -EPERM:
728 netif_device_detach(pegasus->net);
729 break;
730 default:
731 net->stats.tx_errors++;
732 netif_start_queue(net);
733 }
734 } else {
735 net->stats.tx_packets++;
736 net->stats.tx_bytes += skb->len;
737 }
738 dev_kfree_skb(skb);
739
740 return NETDEV_TX_OK;
741 }
742
743 static inline void disable_net_traffic(pegasus_t *pegasus)
744 {
745 __le16 tmp = cpu_to_le16(0);
746
747 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp);
748 }
749
750 static inline void get_interrupt_interval(pegasus_t *pegasus)
751 {
752 u16 data;
753 u8 interval;
754
755 read_eprom_word(pegasus, 4, &data);
756 interval = data >> 8;
757 if (pegasus->usb->speed != USB_SPEED_HIGH) {
758 if (interval < 0x80) {
759 netif_info(pegasus, timer, pegasus->net,
760 "intr interval changed from %ums to %ums\n",
761 interval, 0x80);
762 interval = 0x80;
763 data = (data & 0x00FF) | ((u16)interval << 8);
764 #ifdef PEGASUS_WRITE_EEPROM
765 write_eprom_word(pegasus, 4, data);
766 #endif
767 }
768 }
769 pegasus->intr_interval = interval;
770 }
771
772 static void set_carrier(struct net_device *net)
773 {
774 pegasus_t *pegasus = netdev_priv(net);
775 u16 tmp;
776
777 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
778 return;
779
780 if (tmp & BMSR_LSTATUS)
781 netif_carrier_on(net);
782 else
783 netif_carrier_off(net);
784 }
785
786 static void free_all_urbs(pegasus_t *pegasus)
787 {
788 usb_free_urb(pegasus->intr_urb);
789 usb_free_urb(pegasus->tx_urb);
790 usb_free_urb(pegasus->rx_urb);
791 }
792
793 static void unlink_all_urbs(pegasus_t *pegasus)
794 {
795 usb_kill_urb(pegasus->intr_urb);
796 usb_kill_urb(pegasus->tx_urb);
797 usb_kill_urb(pegasus->rx_urb);
798 }
799
800 static int alloc_urbs(pegasus_t *pegasus)
801 {
802 int res = -ENOMEM;
803
804 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
805 if (!pegasus->rx_urb) {
806 return res;
807 }
808 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
809 if (!pegasus->tx_urb) {
810 usb_free_urb(pegasus->rx_urb);
811 return res;
812 }
813 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
814 if (!pegasus->intr_urb) {
815 usb_free_urb(pegasus->tx_urb);
816 usb_free_urb(pegasus->rx_urb);
817 return res;
818 }
819
820 return 0;
821 }
822
823 static int pegasus_open(struct net_device *net)
824 {
825 pegasus_t *pegasus = netdev_priv(net);
826 int res=-ENOMEM;
827
828 if (pegasus->rx_skb == NULL)
829 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
830 PEGASUS_MTU,
831 GFP_KERNEL);
832 if (!pegasus->rx_skb)
833 goto exit;
834
835 res = set_registers(pegasus, EthID, 6, net->dev_addr);
836
837 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
838 usb_rcvbulkpipe(pegasus->usb, 1),
839 pegasus->rx_skb->data, PEGASUS_MTU,
840 read_bulk_callback, pegasus);
841 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
842 if (res == -ENODEV)
843 netif_device_detach(pegasus->net);
844 netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res);
845 goto exit;
846 }
847
848 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
849 usb_rcvintpipe(pegasus->usb, 3),
850 pegasus->intr_buff, sizeof(pegasus->intr_buff),
851 intr_callback, pegasus, pegasus->intr_interval);
852 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
853 if (res == -ENODEV)
854 netif_device_detach(pegasus->net);
855 netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res);
856 usb_kill_urb(pegasus->rx_urb);
857 goto exit;
858 }
859 res = enable_net_traffic(net, pegasus->usb);
860 if (res < 0) {
861 netif_dbg(pegasus, ifup, net,
862 "can't enable_net_traffic() - %d\n", res);
863 res = -EIO;
864 usb_kill_urb(pegasus->rx_urb);
865 usb_kill_urb(pegasus->intr_urb);
866 goto exit;
867 }
868 set_carrier(net);
869 netif_start_queue(net);
870 netif_dbg(pegasus, ifup, net, "open\n");
871 res = 0;
872 exit:
873 return res;
874 }
875
876 static int pegasus_close(struct net_device *net)
877 {
878 pegasus_t *pegasus = netdev_priv(net);
879
880 netif_stop_queue(net);
881 if (!(pegasus->flags & PEGASUS_UNPLUG))
882 disable_net_traffic(pegasus);
883 tasklet_kill(&pegasus->rx_tl);
884 unlink_all_urbs(pegasus);
885
886 return 0;
887 }
888
889 static void pegasus_get_drvinfo(struct net_device *dev,
890 struct ethtool_drvinfo *info)
891 {
892 pegasus_t *pegasus = netdev_priv(dev);
893
894 strlcpy(info->driver, driver_name, sizeof(info->driver));
895 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
896 usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info));
897 }
898
899 /* also handles three patterns of some kind in hardware */
900 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
901
902 static void
903 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
904 {
905 pegasus_t *pegasus = netdev_priv(dev);
906
907 wol->supported = WAKE_MAGIC | WAKE_PHY;
908 wol->wolopts = pegasus->wolopts;
909 }
910
911 static int
912 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
913 {
914 pegasus_t *pegasus = netdev_priv(dev);
915 u8 reg78 = 0x04;
916 int ret;
917
918 if (wol->wolopts & ~WOL_SUPPORTED)
919 return -EINVAL;
920
921 if (wol->wolopts & WAKE_MAGIC)
922 reg78 |= 0x80;
923 if (wol->wolopts & WAKE_PHY)
924 reg78 |= 0x40;
925 /* FIXME this 0x10 bit still needs to get set in the chip... */
926 if (wol->wolopts)
927 pegasus->eth_regs[0] |= 0x10;
928 else
929 pegasus->eth_regs[0] &= ~0x10;
930 pegasus->wolopts = wol->wolopts;
931
932 ret = set_register(pegasus, WakeupControl, reg78);
933 if (!ret)
934 ret = device_set_wakeup_enable(&pegasus->usb->dev,
935 wol->wolopts);
936 return ret;
937 }
938
939 static inline void pegasus_reset_wol(struct net_device *dev)
940 {
941 struct ethtool_wolinfo wol;
942
943 memset(&wol, 0, sizeof wol);
944 (void) pegasus_set_wol(dev, &wol);
945 }
946
947 static int
948 pegasus_get_link_ksettings(struct net_device *dev,
949 struct ethtool_link_ksettings *ecmd)
950 {
951 pegasus_t *pegasus;
952
953 pegasus = netdev_priv(dev);
954 mii_ethtool_get_link_ksettings(&pegasus->mii, ecmd);
955 return 0;
956 }
957
958 static int
959 pegasus_set_link_ksettings(struct net_device *dev,
960 const struct ethtool_link_ksettings *ecmd)
961 {
962 pegasus_t *pegasus = netdev_priv(dev);
963 return mii_ethtool_set_link_ksettings(&pegasus->mii, ecmd);
964 }
965
966 static int pegasus_nway_reset(struct net_device *dev)
967 {
968 pegasus_t *pegasus = netdev_priv(dev);
969 return mii_nway_restart(&pegasus->mii);
970 }
971
972 static u32 pegasus_get_link(struct net_device *dev)
973 {
974 pegasus_t *pegasus = netdev_priv(dev);
975 return mii_link_ok(&pegasus->mii);
976 }
977
978 static u32 pegasus_get_msglevel(struct net_device *dev)
979 {
980 pegasus_t *pegasus = netdev_priv(dev);
981 return pegasus->msg_enable;
982 }
983
984 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
985 {
986 pegasus_t *pegasus = netdev_priv(dev);
987 pegasus->msg_enable = v;
988 }
989
990 static const struct ethtool_ops ops = {
991 .get_drvinfo = pegasus_get_drvinfo,
992 .nway_reset = pegasus_nway_reset,
993 .get_link = pegasus_get_link,
994 .get_msglevel = pegasus_get_msglevel,
995 .set_msglevel = pegasus_set_msglevel,
996 .get_wol = pegasus_get_wol,
997 .set_wol = pegasus_set_wol,
998 .get_link_ksettings = pegasus_get_link_ksettings,
999 .set_link_ksettings = pegasus_set_link_ksettings,
1000 };
1001
1002 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1003 {
1004 __u16 *data = (__u16 *) &rq->ifr_ifru;
1005 pegasus_t *pegasus = netdev_priv(net);
1006 int res;
1007
1008 switch (cmd) {
1009 case SIOCDEVPRIVATE:
1010 data[0] = pegasus->phy;
1011 /* fall through */
1012 case SIOCDEVPRIVATE + 1:
1013 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1014 res = 0;
1015 break;
1016 case SIOCDEVPRIVATE + 2:
1017 if (!capable(CAP_NET_ADMIN))
1018 return -EPERM;
1019 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, &data[2]);
1020 res = 0;
1021 break;
1022 default:
1023 res = -EOPNOTSUPP;
1024 }
1025 return res;
1026 }
1027
1028 static void pegasus_set_multicast(struct net_device *net)
1029 {
1030 pegasus_t *pegasus = netdev_priv(net);
1031
1032 if (net->flags & IFF_PROMISC) {
1033 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1034 netif_info(pegasus, link, net, "Promiscuous mode enabled\n");
1035 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1036 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1037 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1038 netif_dbg(pegasus, link, net, "set allmulti\n");
1039 } else {
1040 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1041 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1042 }
1043 update_eth_regs_async(pegasus);
1044 }
1045
1046 static __u8 mii_phy_probe(pegasus_t *pegasus)
1047 {
1048 int i;
1049 __u16 tmp;
1050
1051 for (i = 0; i < 32; i++) {
1052 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1053 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1054 continue;
1055 else
1056 return i;
1057 }
1058
1059 return 0xff;
1060 }
1061
1062 static inline void setup_pegasus_II(pegasus_t *pegasus)
1063 {
1064 __u8 data = 0xa5;
1065
1066 set_register(pegasus, Reg1d, 0);
1067 set_register(pegasus, Reg7b, 1);
1068 msleep(100);
1069 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1070 set_register(pegasus, Reg7b, 0);
1071 else
1072 set_register(pegasus, Reg7b, 2);
1073
1074 set_register(pegasus, 0x83, data);
1075 get_registers(pegasus, 0x83, 1, &data);
1076
1077 if (data == 0xa5)
1078 pegasus->chip = 0x8513;
1079 else
1080 pegasus->chip = 0;
1081
1082 set_register(pegasus, 0x80, 0xc0);
1083 set_register(pegasus, 0x83, 0xff);
1084 set_register(pegasus, 0x84, 0x01);
1085
1086 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1087 set_register(pegasus, Reg81, 6);
1088 else
1089 set_register(pegasus, Reg81, 2);
1090 }
1091
1092
1093 static int pegasus_count;
1094 static struct workqueue_struct *pegasus_workqueue;
1095 #define CARRIER_CHECK_DELAY (2 * HZ)
1096
1097 static void check_carrier(struct work_struct *work)
1098 {
1099 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1100 set_carrier(pegasus->net);
1101 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1102 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1103 CARRIER_CHECK_DELAY);
1104 }
1105 }
1106
1107 static int pegasus_blacklisted(struct usb_device *udev)
1108 {
1109 struct usb_device_descriptor *udd = &udev->descriptor;
1110
1111 /* Special quirk to keep the driver from handling the Belkin Bluetooth
1112 * dongle which happens to have the same ID.
1113 */
1114 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) &&
1115 (udd->idProduct == cpu_to_le16(0x0121)) &&
1116 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
1117 (udd->bDeviceProtocol == 1))
1118 return 1;
1119
1120 return 0;
1121 }
1122
1123 /* we rely on probe() and remove() being serialized so we
1124 * don't need extra locking on pegasus_count.
1125 */
1126 static void pegasus_dec_workqueue(void)
1127 {
1128 pegasus_count--;
1129 if (pegasus_count == 0) {
1130 destroy_workqueue(pegasus_workqueue);
1131 pegasus_workqueue = NULL;
1132 }
1133 }
1134
1135 static int pegasus_probe(struct usb_interface *intf,
1136 const struct usb_device_id *id)
1137 {
1138 struct usb_device *dev = interface_to_usbdev(intf);
1139 struct net_device *net;
1140 pegasus_t *pegasus;
1141 int dev_index = id - pegasus_ids;
1142 int res = -ENOMEM;
1143
1144 if (pegasus_blacklisted(dev))
1145 return -ENODEV;
1146
1147 if (pegasus_count == 0) {
1148 pegasus_workqueue = alloc_workqueue("pegasus", WQ_MEM_RECLAIM,
1149 0);
1150 if (!pegasus_workqueue)
1151 return -ENOMEM;
1152 }
1153 pegasus_count++;
1154
1155 net = alloc_etherdev(sizeof(struct pegasus));
1156 if (!net)
1157 goto out;
1158
1159 pegasus = netdev_priv(net);
1160 pegasus->dev_index = dev_index;
1161
1162 res = alloc_urbs(pegasus);
1163 if (res < 0) {
1164 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1165 goto out1;
1166 }
1167
1168 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1169
1170 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1171
1172 pegasus->intf = intf;
1173 pegasus->usb = dev;
1174 pegasus->net = net;
1175
1176
1177 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1178 net->netdev_ops = &pegasus_netdev_ops;
1179 net->ethtool_ops = &ops;
1180 pegasus->mii.dev = net;
1181 pegasus->mii.mdio_read = mdio_read;
1182 pegasus->mii.mdio_write = mdio_write;
1183 pegasus->mii.phy_id_mask = 0x1f;
1184 pegasus->mii.reg_num_mask = 0x1f;
1185 pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
1186 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1187
1188 pegasus->features = usb_dev_id[dev_index].private;
1189 get_interrupt_interval(pegasus);
1190 if (reset_mac(pegasus)) {
1191 dev_err(&intf->dev, "can't reset MAC\n");
1192 res = -EIO;
1193 goto out2;
1194 }
1195 set_ethernet_addr(pegasus);
1196 if (pegasus->features & PEGASUS_II) {
1197 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1198 setup_pegasus_II(pegasus);
1199 }
1200 pegasus->phy = mii_phy_probe(pegasus);
1201 if (pegasus->phy == 0xff) {
1202 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1203 pegasus->phy = 1;
1204 }
1205 pegasus->mii.phy_id = pegasus->phy;
1206 usb_set_intfdata(intf, pegasus);
1207 SET_NETDEV_DEV(net, &intf->dev);
1208 pegasus_reset_wol(net);
1209 res = register_netdev(net);
1210 if (res)
1211 goto out3;
1212 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1213 CARRIER_CHECK_DELAY);
1214 dev_info(&intf->dev, "%s, %s, %pM\n", net->name,
1215 usb_dev_id[dev_index].name, net->dev_addr);
1216 return 0;
1217
1218 out3:
1219 usb_set_intfdata(intf, NULL);
1220 out2:
1221 free_all_urbs(pegasus);
1222 out1:
1223 free_netdev(net);
1224 out:
1225 pegasus_dec_workqueue();
1226 return res;
1227 }
1228
1229 static void pegasus_disconnect(struct usb_interface *intf)
1230 {
1231 struct pegasus *pegasus = usb_get_intfdata(intf);
1232
1233 usb_set_intfdata(intf, NULL);
1234 if (!pegasus) {
1235 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1236 return;
1237 }
1238
1239 pegasus->flags |= PEGASUS_UNPLUG;
1240 cancel_delayed_work(&pegasus->carrier_check);
1241 unregister_netdev(pegasus->net);
1242 unlink_all_urbs(pegasus);
1243 free_all_urbs(pegasus);
1244 if (pegasus->rx_skb != NULL) {
1245 dev_kfree_skb(pegasus->rx_skb);
1246 pegasus->rx_skb = NULL;
1247 }
1248 free_netdev(pegasus->net);
1249 pegasus_dec_workqueue();
1250 }
1251
1252 static int pegasus_suspend(struct usb_interface *intf, pm_message_t message)
1253 {
1254 struct pegasus *pegasus = usb_get_intfdata(intf);
1255
1256 netif_device_detach(pegasus->net);
1257 cancel_delayed_work(&pegasus->carrier_check);
1258 if (netif_running(pegasus->net)) {
1259 usb_kill_urb(pegasus->rx_urb);
1260 usb_kill_urb(pegasus->intr_urb);
1261 }
1262 return 0;
1263 }
1264
1265 static int pegasus_resume(struct usb_interface *intf)
1266 {
1267 struct pegasus *pegasus = usb_get_intfdata(intf);
1268
1269 netif_device_attach(pegasus->net);
1270 if (netif_running(pegasus->net)) {
1271 pegasus->rx_urb->status = 0;
1272 pegasus->rx_urb->actual_length = 0;
1273 read_bulk_callback(pegasus->rx_urb);
1274
1275 pegasus->intr_urb->status = 0;
1276 pegasus->intr_urb->actual_length = 0;
1277 intr_callback(pegasus->intr_urb);
1278 }
1279 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1280 CARRIER_CHECK_DELAY);
1281 return 0;
1282 }
1283
1284 static const struct net_device_ops pegasus_netdev_ops = {
1285 .ndo_open = pegasus_open,
1286 .ndo_stop = pegasus_close,
1287 .ndo_do_ioctl = pegasus_ioctl,
1288 .ndo_start_xmit = pegasus_start_xmit,
1289 .ndo_set_rx_mode = pegasus_set_multicast,
1290 .ndo_tx_timeout = pegasus_tx_timeout,
1291 .ndo_set_mac_address = eth_mac_addr,
1292 .ndo_validate_addr = eth_validate_addr,
1293 };
1294
1295 static struct usb_driver pegasus_driver = {
1296 .name = driver_name,
1297 .probe = pegasus_probe,
1298 .disconnect = pegasus_disconnect,
1299 .id_table = pegasus_ids,
1300 .suspend = pegasus_suspend,
1301 .resume = pegasus_resume,
1302 .disable_hub_initiated_lpm = 1,
1303 };
1304
1305 static void __init parse_id(char *id)
1306 {
1307 unsigned int vendor_id = 0, device_id = 0, flags = 0, i = 0;
1308 char *token, *name = NULL;
1309
1310 if ((token = strsep(&id, ":")) != NULL)
1311 name = token;
1312 /* name now points to a null terminated string*/
1313 if ((token = strsep(&id, ":")) != NULL)
1314 vendor_id = simple_strtoul(token, NULL, 16);
1315 if ((token = strsep(&id, ":")) != NULL)
1316 device_id = simple_strtoul(token, NULL, 16);
1317 flags = simple_strtoul(id, NULL, 16);
1318 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1319 driver_name, name, vendor_id, device_id, flags);
1320
1321 if (vendor_id > 0x10000 || vendor_id == 0)
1322 return;
1323 if (device_id > 0x10000 || device_id == 0)
1324 return;
1325
1326 for (i = 0; usb_dev_id[i].name; i++);
1327 usb_dev_id[i].name = name;
1328 usb_dev_id[i].vendor = vendor_id;
1329 usb_dev_id[i].device = device_id;
1330 usb_dev_id[i].private = flags;
1331 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1332 pegasus_ids[i].idVendor = vendor_id;
1333 pegasus_ids[i].idProduct = device_id;
1334 }
1335
1336 static int __init pegasus_init(void)
1337 {
1338 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1339 if (devid)
1340 parse_id(devid);
1341 return usb_register(&pegasus_driver);
1342 }
1343
1344 static void __exit pegasus_exit(void)
1345 {
1346 usb_deregister(&pegasus_driver);
1347 }
1348
1349 module_init(pegasus_init);
1350 module_exit(pegasus_exit);
Linux with added FPC-III support