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net: use netdev_mc_count and netdev_mc_empty when appropriate
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / usb / kaweth.c
1 /****************************************************************
2 *
3 * kaweth.c - driver for KL5KUSB101 based USB->Ethernet
4 *
5 * (c) 2000 Interlan Communications
6 * (c) 2000 Stephane Alnet
7 * (C) 2001 Brad Hards
8 * (C) 2002 Oliver Neukum
9 *
10 * Original author: The Zapman <zapman@interlan.net>
11 * Inspired by, and much credit goes to Michael Rothwell
12 * <rothwell@interlan.net> for the test equipment, help, and patience
13 * Based off of (and with thanks to) Petko Manolov's pegaus.c driver.
14 * Also many thanks to Joel Silverman and Ed Surprenant at Kawasaki
15 * for providing the firmware and driver resources.
16 *
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2, or
20 * (at your option) any later version.
21 *
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 *
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software Foundation,
29 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 *
31 ****************************************************************/
32
33 /* TODO:
34 * Develop test procedures for USB net interfaces
35 * Run test procedures
36 * Fix bugs from previous two steps
37 * Snoop other OSs for any tricks we're not doing
38 * Reduce arbitrary timeouts
39 * Smart multicast support
40 * Temporary MAC change support
41 * Tunable SOFs parameter - ioctl()?
42 * Ethernet stats collection
43 * Code formatting improvements
44 */
45
46 #include <linux/module.h>
47 #include <linux/slab.h>
48 #include <linux/string.h>
49 #include <linux/init.h>
50 #include <linux/delay.h>
51 #include <linux/netdevice.h>
52 #include <linux/etherdevice.h>
53 #include <linux/usb.h>
54 #include <linux/types.h>
55 #include <linux/ethtool.h>
56 #include <linux/dma-mapping.h>
57 #include <linux/wait.h>
58 #include <linux/firmware.h>
59 #include <asm/uaccess.h>
60 #include <asm/byteorder.h>
61
62 #undef DEBUG
63
64 #define KAWETH_MTU 1514
65 #define KAWETH_BUF_SIZE 1664
66 #define KAWETH_TX_TIMEOUT (5 * HZ)
67 #define KAWETH_SCRATCH_SIZE 32
68 #define KAWETH_FIRMWARE_BUF_SIZE 4096
69 #define KAWETH_CONTROL_TIMEOUT (30000)
70
71 #define KAWETH_STATUS_BROKEN 0x0000001
72 #define KAWETH_STATUS_CLOSING 0x0000002
73 #define KAWETH_STATUS_SUSPENDING 0x0000004
74
75 #define KAWETH_STATUS_BLOCKED (KAWETH_STATUS_CLOSING | KAWETH_STATUS_SUSPENDING)
76
77 #define KAWETH_PACKET_FILTER_PROMISCUOUS 0x01
78 #define KAWETH_PACKET_FILTER_ALL_MULTICAST 0x02
79 #define KAWETH_PACKET_FILTER_DIRECTED 0x04
80 #define KAWETH_PACKET_FILTER_BROADCAST 0x08
81 #define KAWETH_PACKET_FILTER_MULTICAST 0x10
82
83 /* Table 7 */
84 #define KAWETH_COMMAND_GET_ETHERNET_DESC 0x00
85 #define KAWETH_COMMAND_MULTICAST_FILTERS 0x01
86 #define KAWETH_COMMAND_SET_PACKET_FILTER 0x02
87 #define KAWETH_COMMAND_STATISTICS 0x03
88 #define KAWETH_COMMAND_SET_TEMP_MAC 0x06
89 #define KAWETH_COMMAND_GET_TEMP_MAC 0x07
90 #define KAWETH_COMMAND_SET_URB_SIZE 0x08
91 #define KAWETH_COMMAND_SET_SOFS_WAIT 0x09
92 #define KAWETH_COMMAND_SCAN 0xFF
93
94 #define KAWETH_SOFS_TO_WAIT 0x05
95
96 #define INTBUFFERSIZE 4
97
98 #define STATE_OFFSET 0
99 #define STATE_MASK 0x40
100 #define STATE_SHIFT 5
101
102 #define IS_BLOCKED(s) (s & KAWETH_STATUS_BLOCKED)
103
104
105 MODULE_AUTHOR("Michael Zappe <zapman@interlan.net>, Stephane Alnet <stephane@u-picardie.fr>, Brad Hards <bhards@bigpond.net.au> and Oliver Neukum <oliver@neukum.org>");
106 MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver");
107 MODULE_LICENSE("GPL");
108 MODULE_FIRMWARE("kaweth/new_code.bin");
109 MODULE_FIRMWARE("kaweth/new_code_fix.bin");
110 MODULE_FIRMWARE("kaweth/trigger_code.bin");
111 MODULE_FIRMWARE("kaweth/trigger_code_fix.bin");
112
113 static const char driver_name[] = "kaweth";
114
115 static int kaweth_probe(
116 struct usb_interface *intf,
117 const struct usb_device_id *id /* from id_table */
118 );
119 static void kaweth_disconnect(struct usb_interface *intf);
120 static int kaweth_internal_control_msg(struct usb_device *usb_dev,
121 unsigned int pipe,
122 struct usb_ctrlrequest *cmd, void *data,
123 int len, int timeout);
124 static int kaweth_suspend(struct usb_interface *intf, pm_message_t message);
125 static int kaweth_resume(struct usb_interface *intf);
126
127 /****************************************************************
128 * usb_device_id
129 ****************************************************************/
130 static struct usb_device_id usb_klsi_table[] = {
131 { USB_DEVICE(0x03e8, 0x0008) }, /* AOX Endpoints USB Ethernet */
132 { USB_DEVICE(0x04bb, 0x0901) }, /* I-O DATA USB-ET/T */
133 { USB_DEVICE(0x0506, 0x03e8) }, /* 3Com 3C19250 */
134 { USB_DEVICE(0x0506, 0x11f8) }, /* 3Com 3C460 */
135 { USB_DEVICE(0x0557, 0x2002) }, /* ATEN USB Ethernet */
136 { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */
137 { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */
138 { USB_DEVICE(0x0565, 0x0003) }, /* Optus@Home UEP1045A */
139 { USB_DEVICE(0x0565, 0x0005) }, /* Peracom Enet2 */
140 { USB_DEVICE(0x05e9, 0x0008) }, /* KLSI KL5KUSB101B */
141 { USB_DEVICE(0x05e9, 0x0009) }, /* KLSI KL5KUSB101B (Board change) */
142 { USB_DEVICE(0x066b, 0x2202) }, /* Linksys USB10T */
143 { USB_DEVICE(0x06e1, 0x0008) }, /* ADS USB-10BT */
144 { USB_DEVICE(0x06e1, 0x0009) }, /* ADS USB-10BT */
145 { USB_DEVICE(0x0707, 0x0100) }, /* SMC 2202USB */
146 { USB_DEVICE(0x07aa, 0x0001) }, /* Correga K.K. */
147 { USB_DEVICE(0x07b8, 0x4000) }, /* D-Link DU-E10 */
148 { USB_DEVICE(0x0846, 0x1001) }, /* NetGear EA-101 */
149 { USB_DEVICE(0x0846, 0x1002) }, /* NetGear EA-101 */
150 { USB_DEVICE(0x085a, 0x0008) }, /* PortGear Ethernet Adapter */
151 { USB_DEVICE(0x085a, 0x0009) }, /* PortGear Ethernet Adapter */
152 { USB_DEVICE(0x087d, 0x5704) }, /* Jaton USB Ethernet Device Adapter */
153 { USB_DEVICE(0x0951, 0x0008) }, /* Kingston Technology USB Ethernet Adapter */
154 { USB_DEVICE(0x095a, 0x3003) }, /* Portsmith Express Ethernet Adapter */
155 { USB_DEVICE(0x10bd, 0x1427) }, /* ASANTE USB To Ethernet Adapter */
156 { USB_DEVICE(0x1342, 0x0204) }, /* Mobility USB-Ethernet Adapter */
157 { USB_DEVICE(0x13d2, 0x0400) }, /* Shark Pocket Adapter */
158 { USB_DEVICE(0x1485, 0x0001) }, /* Silicom U2E */
159 { USB_DEVICE(0x1485, 0x0002) }, /* Psion Dacom Gold Port Ethernet */
160 { USB_DEVICE(0x1645, 0x0005) }, /* Entrega E45 */
161 { USB_DEVICE(0x1645, 0x0008) }, /* Entrega USB Ethernet Adapter */
162 { USB_DEVICE(0x1645, 0x8005) }, /* PortGear Ethernet Adapter */
163 { USB_DEVICE(0x1668, 0x0323) }, /* Actiontec USB Ethernet */
164 { USB_DEVICE(0x2001, 0x4000) }, /* D-link DSB-650C */
165 {} /* Null terminator */
166 };
167
168 MODULE_DEVICE_TABLE (usb, usb_klsi_table);
169
170 /****************************************************************
171 * kaweth_driver
172 ****************************************************************/
173 static struct usb_driver kaweth_driver = {
174 .name = driver_name,
175 .probe = kaweth_probe,
176 .disconnect = kaweth_disconnect,
177 .suspend = kaweth_suspend,
178 .resume = kaweth_resume,
179 .id_table = usb_klsi_table,
180 .supports_autosuspend = 1,
181 };
182
183 typedef __u8 eth_addr_t[6];
184
185 /****************************************************************
186 * usb_eth_dev
187 ****************************************************************/
188 struct usb_eth_dev {
189 char *name;
190 __u16 vendor;
191 __u16 device;
192 void *pdata;
193 };
194
195 /****************************************************************
196 * kaweth_ethernet_configuration
197 * Refer Table 8
198 ****************************************************************/
199 struct kaweth_ethernet_configuration
200 {
201 __u8 size;
202 __u8 reserved1;
203 __u8 reserved2;
204 eth_addr_t hw_addr;
205 __u32 statistics_mask;
206 __le16 segment_size;
207 __u16 max_multicast_filters;
208 __u8 reserved3;
209 } __attribute__ ((packed));
210
211 /****************************************************************
212 * kaweth_device
213 ****************************************************************/
214 struct kaweth_device
215 {
216 spinlock_t device_lock;
217
218 __u32 status;
219 int end;
220 int suspend_lowmem_rx;
221 int suspend_lowmem_ctrl;
222 int linkstate;
223 int opened;
224 struct delayed_work lowmem_work;
225
226 struct usb_device *dev;
227 struct usb_interface *intf;
228 struct net_device *net;
229 wait_queue_head_t term_wait;
230
231 struct urb *rx_urb;
232 struct urb *tx_urb;
233 struct urb *irq_urb;
234
235 dma_addr_t intbufferhandle;
236 __u8 *intbuffer;
237 dma_addr_t rxbufferhandle;
238 __u8 *rx_buf;
239
240
241 struct sk_buff *tx_skb;
242
243 __u8 *firmware_buf;
244 __u8 scratch[KAWETH_SCRATCH_SIZE];
245 __u16 packet_filter_bitmap;
246
247 struct kaweth_ethernet_configuration configuration;
248
249 struct net_device_stats stats;
250 };
251
252 /****************************************************************
253 * kaweth_control
254 ****************************************************************/
255 static int kaweth_control(struct kaweth_device *kaweth,
256 unsigned int pipe,
257 __u8 request,
258 __u8 requesttype,
259 __u16 value,
260 __u16 index,
261 void *data,
262 __u16 size,
263 int timeout)
264 {
265 struct usb_ctrlrequest *dr;
266 int retval;
267
268 dbg("kaweth_control()");
269
270 if(in_interrupt()) {
271 dbg("in_interrupt()");
272 return -EBUSY;
273 }
274
275 dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
276
277 if (!dr) {
278 dbg("kmalloc() failed");
279 return -ENOMEM;
280 }
281
282 dr->bRequestType = requesttype;
283 dr->bRequest = request;
284 dr->wValue = cpu_to_le16(value);
285 dr->wIndex = cpu_to_le16(index);
286 dr->wLength = cpu_to_le16(size);
287
288 retval = kaweth_internal_control_msg(kaweth->dev,
289 pipe,
290 dr,
291 data,
292 size,
293 timeout);
294
295 kfree(dr);
296 return retval;
297 }
298
299 /****************************************************************
300 * kaweth_read_configuration
301 ****************************************************************/
302 static int kaweth_read_configuration(struct kaweth_device *kaweth)
303 {
304 int retval;
305
306 dbg("Reading kaweth configuration");
307
308 retval = kaweth_control(kaweth,
309 usb_rcvctrlpipe(kaweth->dev, 0),
310 KAWETH_COMMAND_GET_ETHERNET_DESC,
311 USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
312 0,
313 0,
314 (void *)&kaweth->configuration,
315 sizeof(kaweth->configuration),
316 KAWETH_CONTROL_TIMEOUT);
317
318 return retval;
319 }
320
321 /****************************************************************
322 * kaweth_set_urb_size
323 ****************************************************************/
324 static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size)
325 {
326 int retval;
327
328 dbg("Setting URB size to %d", (unsigned)urb_size);
329
330 retval = kaweth_control(kaweth,
331 usb_sndctrlpipe(kaweth->dev, 0),
332 KAWETH_COMMAND_SET_URB_SIZE,
333 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
334 urb_size,
335 0,
336 (void *)&kaweth->scratch,
337 0,
338 KAWETH_CONTROL_TIMEOUT);
339
340 return retval;
341 }
342
343 /****************************************************************
344 * kaweth_set_sofs_wait
345 ****************************************************************/
346 static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait)
347 {
348 int retval;
349
350 dbg("Set SOFS wait to %d", (unsigned)sofs_wait);
351
352 retval = kaweth_control(kaweth,
353 usb_sndctrlpipe(kaweth->dev, 0),
354 KAWETH_COMMAND_SET_SOFS_WAIT,
355 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
356 sofs_wait,
357 0,
358 (void *)&kaweth->scratch,
359 0,
360 KAWETH_CONTROL_TIMEOUT);
361
362 return retval;
363 }
364
365 /****************************************************************
366 * kaweth_set_receive_filter
367 ****************************************************************/
368 static int kaweth_set_receive_filter(struct kaweth_device *kaweth,
369 __u16 receive_filter)
370 {
371 int retval;
372
373 dbg("Set receive filter to %d", (unsigned)receive_filter);
374
375 retval = kaweth_control(kaweth,
376 usb_sndctrlpipe(kaweth->dev, 0),
377 KAWETH_COMMAND_SET_PACKET_FILTER,
378 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
379 receive_filter,
380 0,
381 (void *)&kaweth->scratch,
382 0,
383 KAWETH_CONTROL_TIMEOUT);
384
385 return retval;
386 }
387
388 /****************************************************************
389 * kaweth_download_firmware
390 ****************************************************************/
391 static int kaweth_download_firmware(struct kaweth_device *kaweth,
392 const char *fwname,
393 __u8 interrupt,
394 __u8 type)
395 {
396 const struct firmware *fw;
397 int data_len;
398 int ret;
399
400 ret = request_firmware(&fw, fwname, &kaweth->dev->dev);
401 if (ret) {
402 err("Firmware request failed\n");
403 return ret;
404 }
405
406 if (fw->size > KAWETH_FIRMWARE_BUF_SIZE) {
407 err("Firmware too big: %zu", fw->size);
408 return -ENOSPC;
409 }
410 data_len = fw->size;
411 memcpy(kaweth->firmware_buf, fw->data, fw->size);
412
413 release_firmware(fw);
414
415 kaweth->firmware_buf[2] = (data_len & 0xFF) - 7;
416 kaweth->firmware_buf[3] = data_len >> 8;
417 kaweth->firmware_buf[4] = type;
418 kaweth->firmware_buf[5] = interrupt;
419
420 dbg("High: %i, Low:%i", kaweth->firmware_buf[3],
421 kaweth->firmware_buf[2]);
422
423 dbg("Downloading firmware at %p to kaweth device at %p",
424 fw->data, kaweth);
425 dbg("Firmware length: %d", data_len);
426
427 return kaweth_control(kaweth,
428 usb_sndctrlpipe(kaweth->dev, 0),
429 KAWETH_COMMAND_SCAN,
430 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
431 0,
432 0,
433 (void *)kaweth->firmware_buf,
434 data_len,
435 KAWETH_CONTROL_TIMEOUT);
436 }
437
438 /****************************************************************
439 * kaweth_trigger_firmware
440 ****************************************************************/
441 static int kaweth_trigger_firmware(struct kaweth_device *kaweth,
442 __u8 interrupt)
443 {
444 kaweth->firmware_buf[0] = 0xB6;
445 kaweth->firmware_buf[1] = 0xC3;
446 kaweth->firmware_buf[2] = 0x01;
447 kaweth->firmware_buf[3] = 0x00;
448 kaweth->firmware_buf[4] = 0x06;
449 kaweth->firmware_buf[5] = interrupt;
450 kaweth->firmware_buf[6] = 0x00;
451 kaweth->firmware_buf[7] = 0x00;
452
453 dbg("Triggering firmware");
454
455 return kaweth_control(kaweth,
456 usb_sndctrlpipe(kaweth->dev, 0),
457 KAWETH_COMMAND_SCAN,
458 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
459 0,
460 0,
461 (void *)kaweth->firmware_buf,
462 8,
463 KAWETH_CONTROL_TIMEOUT);
464 }
465
466 /****************************************************************
467 * kaweth_reset
468 ****************************************************************/
469 static int kaweth_reset(struct kaweth_device *kaweth)
470 {
471 int result;
472
473 dbg("kaweth_reset(%p)", kaweth);
474 result = usb_reset_configuration(kaweth->dev);
475 mdelay(10);
476
477 dbg("kaweth_reset() returns %d.",result);
478
479 return result;
480 }
481
482 static void kaweth_usb_receive(struct urb *);
483 static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t);
484
485 /****************************************************************
486 int_callback
487 *****************************************************************/
488
489 static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t mf)
490 {
491 int status;
492
493 status = usb_submit_urb (kaweth->irq_urb, mf);
494 if (unlikely(status == -ENOMEM)) {
495 kaweth->suspend_lowmem_ctrl = 1;
496 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
497 } else {
498 kaweth->suspend_lowmem_ctrl = 0;
499 }
500
501 if (status)
502 err ("can't resubmit intr, %s-%s, status %d",
503 kaweth->dev->bus->bus_name,
504 kaweth->dev->devpath, status);
505 }
506
507 static void int_callback(struct urb *u)
508 {
509 struct kaweth_device *kaweth = u->context;
510 int act_state;
511 int status = u->status;
512
513 switch (status) {
514 case 0: /* success */
515 break;
516 case -ECONNRESET: /* unlink */
517 case -ENOENT:
518 case -ESHUTDOWN:
519 return;
520 /* -EPIPE: should clear the halt */
521 default: /* error */
522 goto resubmit;
523 }
524
525 /* we check the link state to report changes */
526 if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) {
527 if (act_state)
528 netif_carrier_on(kaweth->net);
529 else
530 netif_carrier_off(kaweth->net);
531
532 kaweth->linkstate = act_state;
533 }
534 resubmit:
535 kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC);
536 }
537
538 static void kaweth_resubmit_tl(struct work_struct *work)
539 {
540 struct kaweth_device *kaweth =
541 container_of(work, struct kaweth_device, lowmem_work.work);
542
543 if (IS_BLOCKED(kaweth->status))
544 return;
545
546 if (kaweth->suspend_lowmem_rx)
547 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
548
549 if (kaweth->suspend_lowmem_ctrl)
550 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
551 }
552
553
554 /****************************************************************
555 * kaweth_resubmit_rx_urb
556 ****************************************************************/
557 static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth,
558 gfp_t mem_flags)
559 {
560 int result;
561
562 usb_fill_bulk_urb(kaweth->rx_urb,
563 kaweth->dev,
564 usb_rcvbulkpipe(kaweth->dev, 1),
565 kaweth->rx_buf,
566 KAWETH_BUF_SIZE,
567 kaweth_usb_receive,
568 kaweth);
569 kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
570 kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle;
571
572 if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) {
573 if (result == -ENOMEM) {
574 kaweth->suspend_lowmem_rx = 1;
575 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
576 }
577 err("resubmitting rx_urb %d failed", result);
578 } else {
579 kaweth->suspend_lowmem_rx = 0;
580 }
581
582 return result;
583 }
584
585 static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth);
586
587 /****************************************************************
588 * kaweth_usb_receive
589 ****************************************************************/
590 static void kaweth_usb_receive(struct urb *urb)
591 {
592 struct kaweth_device *kaweth = urb->context;
593 struct net_device *net = kaweth->net;
594 int status = urb->status;
595
596 int count = urb->actual_length;
597 int count2 = urb->transfer_buffer_length;
598
599 __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf);
600
601 struct sk_buff *skb;
602
603 if (unlikely(status == -EPIPE)) {
604 kaweth->stats.rx_errors++;
605 kaweth->end = 1;
606 wake_up(&kaweth->term_wait);
607 dbg("Status was -EPIPE.");
608 return;
609 }
610 if (unlikely(status == -ECONNRESET || status == -ESHUTDOWN)) {
611 /* we are killed - set a flag and wake the disconnect handler */
612 kaweth->end = 1;
613 wake_up(&kaweth->term_wait);
614 dbg("Status was -ECONNRESET or -ESHUTDOWN.");
615 return;
616 }
617 if (unlikely(status == -EPROTO || status == -ETIME ||
618 status == -EILSEQ)) {
619 kaweth->stats.rx_errors++;
620 dbg("Status was -EPROTO, -ETIME, or -EILSEQ.");
621 return;
622 }
623 if (unlikely(status == -EOVERFLOW)) {
624 kaweth->stats.rx_errors++;
625 dbg("Status was -EOVERFLOW.");
626 }
627 spin_lock(&kaweth->device_lock);
628 if (IS_BLOCKED(kaweth->status)) {
629 spin_unlock(&kaweth->device_lock);
630 return;
631 }
632 spin_unlock(&kaweth->device_lock);
633
634 if(status && status != -EREMOTEIO && count != 1) {
635 err("%s RX status: %d count: %d packet_len: %d",
636 net->name,
637 status,
638 count,
639 (int)pkt_len);
640 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
641 return;
642 }
643
644 if(kaweth->net && (count > 2)) {
645 if(pkt_len > (count - 2)) {
646 err("Packet length too long for USB frame (pkt_len: %x, count: %x)",pkt_len, count);
647 err("Packet len & 2047: %x", pkt_len & 2047);
648 err("Count 2: %x", count2);
649 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
650 return;
651 }
652
653 if(!(skb = dev_alloc_skb(pkt_len+2))) {
654 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
655 return;
656 }
657
658 skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
659
660 skb_copy_to_linear_data(skb, kaweth->rx_buf + 2, pkt_len);
661
662 skb_put(skb, pkt_len);
663
664 skb->protocol = eth_type_trans(skb, net);
665
666 netif_rx(skb);
667
668 kaweth->stats.rx_packets++;
669 kaweth->stats.rx_bytes += pkt_len;
670 }
671
672 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
673 }
674
675 /****************************************************************
676 * kaweth_open
677 ****************************************************************/
678 static int kaweth_open(struct net_device *net)
679 {
680 struct kaweth_device *kaweth = netdev_priv(net);
681 int res;
682
683 dbg("Opening network device.");
684
685 res = usb_autopm_get_interface(kaweth->intf);
686 if (res) {
687 err("Interface cannot be resumed.");
688 return -EIO;
689 }
690 res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL);
691 if (res)
692 goto err_out;
693
694 usb_fill_int_urb(
695 kaweth->irq_urb,
696 kaweth->dev,
697 usb_rcvintpipe(kaweth->dev, 3),
698 kaweth->intbuffer,
699 INTBUFFERSIZE,
700 int_callback,
701 kaweth,
702 250); /* overriding the descriptor */
703 kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle;
704 kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
705
706 res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL);
707 if (res) {
708 usb_kill_urb(kaweth->rx_urb);
709 goto err_out;
710 }
711 kaweth->opened = 1;
712
713 netif_start_queue(net);
714
715 kaweth_async_set_rx_mode(kaweth);
716 return 0;
717
718 err_out:
719 usb_autopm_put_interface(kaweth->intf);
720 return -EIO;
721 }
722
723 /****************************************************************
724 * kaweth_kill_urbs
725 ****************************************************************/
726 static void kaweth_kill_urbs(struct kaweth_device *kaweth)
727 {
728 usb_kill_urb(kaweth->irq_urb);
729 usb_kill_urb(kaweth->rx_urb);
730 usb_kill_urb(kaweth->tx_urb);
731
732 cancel_delayed_work_sync(&kaweth->lowmem_work);
733
734 /* a scheduled work may have resubmitted,
735 we hit them again */
736 usb_kill_urb(kaweth->irq_urb);
737 usb_kill_urb(kaweth->rx_urb);
738 }
739
740 /****************************************************************
741 * kaweth_close
742 ****************************************************************/
743 static int kaweth_close(struct net_device *net)
744 {
745 struct kaweth_device *kaweth = netdev_priv(net);
746
747 netif_stop_queue(net);
748 kaweth->opened = 0;
749
750 kaweth->status |= KAWETH_STATUS_CLOSING;
751
752 kaweth_kill_urbs(kaweth);
753
754 kaweth->status &= ~KAWETH_STATUS_CLOSING;
755
756 usb_autopm_put_interface(kaweth->intf);
757
758 return 0;
759 }
760
761 static void kaweth_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
762 {
763 struct kaweth_device *kaweth = netdev_priv(dev);
764
765 strlcpy(info->driver, driver_name, sizeof(info->driver));
766 usb_make_path(kaweth->dev, info->bus_info, sizeof (info->bus_info));
767 }
768
769 static u32 kaweth_get_link(struct net_device *dev)
770 {
771 struct kaweth_device *kaweth = netdev_priv(dev);
772
773 return kaweth->linkstate;
774 }
775
776 static const struct ethtool_ops ops = {
777 .get_drvinfo = kaweth_get_drvinfo,
778 .get_link = kaweth_get_link
779 };
780
781 /****************************************************************
782 * kaweth_usb_transmit_complete
783 ****************************************************************/
784 static void kaweth_usb_transmit_complete(struct urb *urb)
785 {
786 struct kaweth_device *kaweth = urb->context;
787 struct sk_buff *skb = kaweth->tx_skb;
788 int status = urb->status;
789
790 if (unlikely(status != 0))
791 if (status != -ENOENT)
792 dbg("%s: TX status %d.", kaweth->net->name, status);
793
794 netif_wake_queue(kaweth->net);
795 dev_kfree_skb_irq(skb);
796 }
797
798 /****************************************************************
799 * kaweth_start_xmit
800 ****************************************************************/
801 static netdev_tx_t kaweth_start_xmit(struct sk_buff *skb,
802 struct net_device *net)
803 {
804 struct kaweth_device *kaweth = netdev_priv(net);
805 __le16 *private_header;
806
807 int res;
808
809 spin_lock_irq(&kaweth->device_lock);
810
811 kaweth_async_set_rx_mode(kaweth);
812 netif_stop_queue(net);
813 if (IS_BLOCKED(kaweth->status)) {
814 goto skip;
815 }
816
817 /* We now decide whether we can put our special header into the sk_buff */
818 if (skb_cloned(skb) || skb_headroom(skb) < 2) {
819 /* no such luck - we make our own */
820 struct sk_buff *copied_skb;
821 copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC);
822 dev_kfree_skb_irq(skb);
823 skb = copied_skb;
824 if (!copied_skb) {
825 kaweth->stats.tx_errors++;
826 netif_start_queue(net);
827 spin_unlock_irq(&kaweth->device_lock);
828 return NETDEV_TX_OK;
829 }
830 }
831
832 private_header = (__le16 *)__skb_push(skb, 2);
833 *private_header = cpu_to_le16(skb->len-2);
834 kaweth->tx_skb = skb;
835
836 usb_fill_bulk_urb(kaweth->tx_urb,
837 kaweth->dev,
838 usb_sndbulkpipe(kaweth->dev, 2),
839 private_header,
840 skb->len,
841 kaweth_usb_transmit_complete,
842 kaweth);
843 kaweth->end = 0;
844
845 if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC)))
846 {
847 dev_warn(&net->dev, "kaweth failed tx_urb %d\n", res);
848 skip:
849 kaweth->stats.tx_errors++;
850
851 netif_start_queue(net);
852 dev_kfree_skb_irq(skb);
853 }
854 else
855 {
856 kaweth->stats.tx_packets++;
857 kaweth->stats.tx_bytes += skb->len;
858 net->trans_start = jiffies;
859 }
860
861 spin_unlock_irq(&kaweth->device_lock);
862
863 return NETDEV_TX_OK;
864 }
865
866 /****************************************************************
867 * kaweth_set_rx_mode
868 ****************************************************************/
869 static void kaweth_set_rx_mode(struct net_device *net)
870 {
871 struct kaweth_device *kaweth = netdev_priv(net);
872
873 __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED |
874 KAWETH_PACKET_FILTER_BROADCAST |
875 KAWETH_PACKET_FILTER_MULTICAST;
876
877 dbg("Setting Rx mode to %d", packet_filter_bitmap);
878
879 netif_stop_queue(net);
880
881 if (net->flags & IFF_PROMISC) {
882 packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS;
883 }
884 else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
885 packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST;
886 }
887
888 kaweth->packet_filter_bitmap = packet_filter_bitmap;
889 netif_wake_queue(net);
890 }
891
892 /****************************************************************
893 * kaweth_async_set_rx_mode
894 ****************************************************************/
895 static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth)
896 {
897 int result;
898 __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap;
899
900 kaweth->packet_filter_bitmap = 0;
901 if (packet_filter_bitmap == 0)
902 return;
903
904 if (in_interrupt())
905 return;
906
907 result = kaweth_control(kaweth,
908 usb_sndctrlpipe(kaweth->dev, 0),
909 KAWETH_COMMAND_SET_PACKET_FILTER,
910 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
911 packet_filter_bitmap,
912 0,
913 (void *)&kaweth->scratch,
914 0,
915 KAWETH_CONTROL_TIMEOUT);
916
917 if(result < 0) {
918 err("Failed to set Rx mode: %d", result);
919 }
920 else {
921 dbg("Set Rx mode to %d", packet_filter_bitmap);
922 }
923 }
924
925 /****************************************************************
926 * kaweth_netdev_stats
927 ****************************************************************/
928 static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev)
929 {
930 struct kaweth_device *kaweth = netdev_priv(dev);
931 return &kaweth->stats;
932 }
933
934 /****************************************************************
935 * kaweth_tx_timeout
936 ****************************************************************/
937 static void kaweth_tx_timeout(struct net_device *net)
938 {
939 struct kaweth_device *kaweth = netdev_priv(net);
940
941 dev_warn(&net->dev, "%s: Tx timed out. Resetting.\n", net->name);
942 kaweth->stats.tx_errors++;
943 net->trans_start = jiffies;
944
945 usb_unlink_urb(kaweth->tx_urb);
946 }
947
948 /****************************************************************
949 * kaweth_suspend
950 ****************************************************************/
951 static int kaweth_suspend(struct usb_interface *intf, pm_message_t message)
952 {
953 struct kaweth_device *kaweth = usb_get_intfdata(intf);
954 unsigned long flags;
955
956 dbg("Suspending device");
957 spin_lock_irqsave(&kaweth->device_lock, flags);
958 kaweth->status |= KAWETH_STATUS_SUSPENDING;
959 spin_unlock_irqrestore(&kaweth->device_lock, flags);
960
961 kaweth_kill_urbs(kaweth);
962 return 0;
963 }
964
965 /****************************************************************
966 * kaweth_resume
967 ****************************************************************/
968 static int kaweth_resume(struct usb_interface *intf)
969 {
970 struct kaweth_device *kaweth = usb_get_intfdata(intf);
971 unsigned long flags;
972
973 dbg("Resuming device");
974 spin_lock_irqsave(&kaweth->device_lock, flags);
975 kaweth->status &= ~KAWETH_STATUS_SUSPENDING;
976 spin_unlock_irqrestore(&kaweth->device_lock, flags);
977
978 if (!kaweth->opened)
979 return 0;
980 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
981 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
982
983 return 0;
984 }
985
986 /****************************************************************
987 * kaweth_probe
988 ****************************************************************/
989
990
991 static const struct net_device_ops kaweth_netdev_ops = {
992 .ndo_open = kaweth_open,
993 .ndo_stop = kaweth_close,
994 .ndo_start_xmit = kaweth_start_xmit,
995 .ndo_tx_timeout = kaweth_tx_timeout,
996 .ndo_set_multicast_list = kaweth_set_rx_mode,
997 .ndo_get_stats = kaweth_netdev_stats,
998 .ndo_change_mtu = eth_change_mtu,
999 .ndo_set_mac_address = eth_mac_addr,
1000 .ndo_validate_addr = eth_validate_addr,
1001 };
1002
1003 static int kaweth_probe(
1004 struct usb_interface *intf,
1005 const struct usb_device_id *id /* from id_table */
1006 )
1007 {
1008 struct usb_device *dev = interface_to_usbdev(intf);
1009 struct kaweth_device *kaweth;
1010 struct net_device *netdev;
1011 const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
1012 int result = 0;
1013
1014 dbg("Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x",
1015 dev->devnum,
1016 le16_to_cpu(dev->descriptor.idVendor),
1017 le16_to_cpu(dev->descriptor.idProduct),
1018 le16_to_cpu(dev->descriptor.bcdDevice));
1019
1020 dbg("Device at %p", dev);
1021
1022 dbg("Descriptor length: %x type: %x",
1023 (int)dev->descriptor.bLength,
1024 (int)dev->descriptor.bDescriptorType);
1025
1026 netdev = alloc_etherdev(sizeof(*kaweth));
1027 if (!netdev)
1028 return -ENOMEM;
1029
1030 kaweth = netdev_priv(netdev);
1031 kaweth->dev = dev;
1032 kaweth->net = netdev;
1033
1034 spin_lock_init(&kaweth->device_lock);
1035 init_waitqueue_head(&kaweth->term_wait);
1036
1037 dbg("Resetting.");
1038
1039 kaweth_reset(kaweth);
1040
1041 /*
1042 * If high byte of bcdDevice is nonzero, firmware is already
1043 * downloaded. Don't try to do it again, or we'll hang the device.
1044 */
1045
1046 if (le16_to_cpu(dev->descriptor.bcdDevice) >> 8) {
1047 dev_info(&intf->dev, "Firmware present in device.\n");
1048 } else {
1049 /* Download the firmware */
1050 dev_info(&intf->dev, "Downloading firmware...\n");
1051 kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL);
1052 if ((result = kaweth_download_firmware(kaweth,
1053 "kaweth/new_code.bin",
1054 100,
1055 2)) < 0) {
1056 err("Error downloading firmware (%d)", result);
1057 goto err_fw;
1058 }
1059
1060 if ((result = kaweth_download_firmware(kaweth,
1061 "kaweth/new_code_fix.bin",
1062 100,
1063 3)) < 0) {
1064 err("Error downloading firmware fix (%d)", result);
1065 goto err_fw;
1066 }
1067
1068 if ((result = kaweth_download_firmware(kaweth,
1069 "kaweth/trigger_code.bin",
1070 126,
1071 2)) < 0) {
1072 err("Error downloading trigger code (%d)", result);
1073 goto err_fw;
1074
1075 }
1076
1077 if ((result = kaweth_download_firmware(kaweth,
1078 "kaweth/trigger_code_fix.bin",
1079 126,
1080 3)) < 0) {
1081 err("Error downloading trigger code fix (%d)", result);
1082 goto err_fw;
1083 }
1084
1085
1086 if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
1087 err("Error triggering firmware (%d)", result);
1088 goto err_fw;
1089 }
1090
1091 /* Device will now disappear for a moment... */
1092 dev_info(&intf->dev, "Firmware loaded. I'll be back...\n");
1093 err_fw:
1094 free_page((unsigned long)kaweth->firmware_buf);
1095 free_netdev(netdev);
1096 return -EIO;
1097 }
1098
1099 result = kaweth_read_configuration(kaweth);
1100
1101 if(result < 0) {
1102 err("Error reading configuration (%d), no net device created", result);
1103 goto err_free_netdev;
1104 }
1105
1106 dev_info(&intf->dev, "Statistics collection: %x\n", kaweth->configuration.statistics_mask);
1107 dev_info(&intf->dev, "Multicast filter limit: %x\n", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
1108 dev_info(&intf->dev, "MTU: %d\n", le16_to_cpu(kaweth->configuration.segment_size));
1109 dev_info(&intf->dev, "Read MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
1110 (int)kaweth->configuration.hw_addr[0],
1111 (int)kaweth->configuration.hw_addr[1],
1112 (int)kaweth->configuration.hw_addr[2],
1113 (int)kaweth->configuration.hw_addr[3],
1114 (int)kaweth->configuration.hw_addr[4],
1115 (int)kaweth->configuration.hw_addr[5]);
1116
1117 if(!memcmp(&kaweth->configuration.hw_addr,
1118 &bcast_addr,
1119 sizeof(bcast_addr))) {
1120 err("Firmware not functioning properly, no net device created");
1121 goto err_free_netdev;
1122 }
1123
1124 if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
1125 dbg("Error setting URB size");
1126 goto err_free_netdev;
1127 }
1128
1129 if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
1130 err("Error setting SOFS wait");
1131 goto err_free_netdev;
1132 }
1133
1134 result = kaweth_set_receive_filter(kaweth,
1135 KAWETH_PACKET_FILTER_DIRECTED |
1136 KAWETH_PACKET_FILTER_BROADCAST |
1137 KAWETH_PACKET_FILTER_MULTICAST);
1138
1139 if(result < 0) {
1140 err("Error setting receive filter");
1141 goto err_free_netdev;
1142 }
1143
1144 dbg("Initializing net device.");
1145
1146 kaweth->intf = intf;
1147
1148 kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1149 if (!kaweth->tx_urb)
1150 goto err_free_netdev;
1151 kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1152 if (!kaweth->rx_urb)
1153 goto err_only_tx;
1154 kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
1155 if (!kaweth->irq_urb)
1156 goto err_tx_and_rx;
1157
1158 kaweth->intbuffer = usb_buffer_alloc( kaweth->dev,
1159 INTBUFFERSIZE,
1160 GFP_KERNEL,
1161 &kaweth->intbufferhandle);
1162 if (!kaweth->intbuffer)
1163 goto err_tx_and_rx_and_irq;
1164 kaweth->rx_buf = usb_buffer_alloc( kaweth->dev,
1165 KAWETH_BUF_SIZE,
1166 GFP_KERNEL,
1167 &kaweth->rxbufferhandle);
1168 if (!kaweth->rx_buf)
1169 goto err_all_but_rxbuf;
1170
1171 memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr));
1172 memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr,
1173 sizeof(kaweth->configuration.hw_addr));
1174
1175 netdev->netdev_ops = &kaweth_netdev_ops;
1176 netdev->watchdog_timeo = KAWETH_TX_TIMEOUT;
1177 netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size);
1178 SET_ETHTOOL_OPS(netdev, &ops);
1179
1180 /* kaweth is zeroed as part of alloc_netdev */
1181 INIT_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl);
1182 usb_set_intfdata(intf, kaweth);
1183
1184 #if 0
1185 // dma_supported() is deeply broken on almost all architectures
1186 if (dma_supported (&intf->dev, 0xffffffffffffffffULL))
1187 kaweth->net->features |= NETIF_F_HIGHDMA;
1188 #endif
1189
1190 SET_NETDEV_DEV(netdev, &intf->dev);
1191 if (register_netdev(netdev) != 0) {
1192 err("Error registering netdev.");
1193 goto err_intfdata;
1194 }
1195
1196 dev_info(&intf->dev, "kaweth interface created at %s\n",
1197 kaweth->net->name);
1198
1199 dbg("Kaweth probe returning.");
1200
1201 return 0;
1202
1203 err_intfdata:
1204 usb_set_intfdata(intf, NULL);
1205 usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1206 err_all_but_rxbuf:
1207 usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1208 err_tx_and_rx_and_irq:
1209 usb_free_urb(kaweth->irq_urb);
1210 err_tx_and_rx:
1211 usb_free_urb(kaweth->rx_urb);
1212 err_only_tx:
1213 usb_free_urb(kaweth->tx_urb);
1214 err_free_netdev:
1215 free_netdev(netdev);
1216
1217 return -EIO;
1218 }
1219
1220 /****************************************************************
1221 * kaweth_disconnect
1222 ****************************************************************/
1223 static void kaweth_disconnect(struct usb_interface *intf)
1224 {
1225 struct kaweth_device *kaweth = usb_get_intfdata(intf);
1226 struct net_device *netdev;
1227
1228 dev_info(&intf->dev, "Unregistering\n");
1229
1230 usb_set_intfdata(intf, NULL);
1231 if (!kaweth) {
1232 dev_warn(&intf->dev, "unregistering non-existant device\n");
1233 return;
1234 }
1235 netdev = kaweth->net;
1236
1237 dbg("Unregistering net device");
1238 unregister_netdev(netdev);
1239
1240 usb_free_urb(kaweth->rx_urb);
1241 usb_free_urb(kaweth->tx_urb);
1242 usb_free_urb(kaweth->irq_urb);
1243
1244 usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1245 usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1246
1247 free_netdev(netdev);
1248 }
1249
1250
1251 // FIXME this completion stuff is a modified clone of
1252 // an OLD version of some stuff in usb.c ...
1253 struct usb_api_data {
1254 wait_queue_head_t wqh;
1255 int done;
1256 };
1257
1258 /*-------------------------------------------------------------------*
1259 * completion handler for compatibility wrappers (sync control/bulk) *
1260 *-------------------------------------------------------------------*/
1261 static void usb_api_blocking_completion(struct urb *urb)
1262 {
1263 struct usb_api_data *awd = (struct usb_api_data *)urb->context;
1264
1265 awd->done=1;
1266 wake_up(&awd->wqh);
1267 }
1268
1269 /*-------------------------------------------------------------------*
1270 * COMPATIBILITY STUFF *
1271 *-------------------------------------------------------------------*/
1272
1273 // Starts urb and waits for completion or timeout
1274 static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length)
1275 {
1276 struct usb_api_data awd;
1277 int status;
1278
1279 init_waitqueue_head(&awd.wqh);
1280 awd.done = 0;
1281
1282 urb->context = &awd;
1283 status = usb_submit_urb(urb, GFP_NOIO);
1284 if (status) {
1285 // something went wrong
1286 usb_free_urb(urb);
1287 return status;
1288 }
1289
1290 if (!wait_event_timeout(awd.wqh, awd.done, timeout)) {
1291 // timeout
1292 dev_warn(&urb->dev->dev, "usb_control/bulk_msg: timeout\n");
1293 usb_kill_urb(urb); // remove urb safely
1294 status = -ETIMEDOUT;
1295 }
1296 else {
1297 status = urb->status;
1298 }
1299
1300 if (actual_length) {
1301 *actual_length = urb->actual_length;
1302 }
1303
1304 usb_free_urb(urb);
1305 return status;
1306 }
1307
1308 /*-------------------------------------------------------------------*/
1309 // returns status (negative) or length (positive)
1310 static int kaweth_internal_control_msg(struct usb_device *usb_dev,
1311 unsigned int pipe,
1312 struct usb_ctrlrequest *cmd, void *data,
1313 int len, int timeout)
1314 {
1315 struct urb *urb;
1316 int retv;
1317 int length = 0; /* shut up GCC */
1318
1319 urb = usb_alloc_urb(0, GFP_NOIO);
1320 if (!urb)
1321 return -ENOMEM;
1322
1323 usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data,
1324 len, usb_api_blocking_completion, NULL);
1325
1326 retv = usb_start_wait_urb(urb, timeout, &length);
1327 if (retv < 0) {
1328 return retv;
1329 }
1330 else {
1331 return length;
1332 }
1333 }
1334
1335
1336 /****************************************************************
1337 * kaweth_init
1338 ****************************************************************/
1339 static int __init kaweth_init(void)
1340 {
1341 dbg("Driver loading");
1342 return usb_register(&kaweth_driver);
1343 }
1344
1345 /****************************************************************
1346 * kaweth_exit
1347 ****************************************************************/
1348 static void __exit kaweth_exit(void)
1349 {
1350 usb_deregister(&kaweth_driver);
1351 }
1352
1353 module_init(kaweth_init);
1354 module_exit(kaweth_exit);
1355
1356
1357
1358
1359
1360
1361
1362
1363
kernel source for telekom puls (alcatel/mediatek)