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[PATCH] remove many unneeded #includes of sched.h
[linux.git] / drivers / usb / net / kaweth.c
CommitLineData
1da177e4
LT		 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 <[email protected]>
11 * Inspired by, and much credit goes to Michael Rothwell
12 * <[email protected]> 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 * Fix in_interrupt() problem
35 * Develop test procedures for USB net interfaces
36 * Run test procedures
37 * Fix bugs from previous two steps
38 * Snoop other OSs for any tricks we're not doing
39 * SMP locking
40 * Reduce arbitrary timeouts
41 * Smart multicast support
42 * Temporary MAC change support
43 * Tunable SOFs parameter - ioctl()?
44 * Ethernet stats collection
45 * Code formatting improvements
46 */
47
48#include <linux/module.h>
1da177e4
LT		 49#include <linux/slab.h>
50#include <linux/string.h>
51#include <linux/init.h>
52#include <linux/delay.h>
53#include <linux/netdevice.h>
54#include <linux/etherdevice.h>
55#include <linux/usb.h>
56#include <linux/types.h>
57#include <linux/ethtool.h>
58#include <linux/pci.h>
59#include <linux/dma-mapping.h>
60#include <linux/wait.h>
61#include <asm/uaccess.h>
62#include <asm/semaphore.h>
63#include <asm/byteorder.h>
64
65#undef DEBUG
66
1da177e4
LT		 67#include "kawethfw.h"
68
69#define KAWETH_MTU 1514
70#define KAWETH_BUF_SIZE 1664
71#define KAWETH_TX_TIMEOUT (5 * HZ)
72#define KAWETH_SCRATCH_SIZE 32
73#define KAWETH_FIRMWARE_BUF_SIZE 4096
74#define KAWETH_CONTROL_TIMEOUT (30 * HZ)
75
76#define KAWETH_STATUS_BROKEN 0x0000001
77#define KAWETH_STATUS_CLOSING 0x0000002
1a2ea1df
ON		 78#define KAWETH_STATUS_SUSPENDING 0x0000004
79
80#define KAWETH_STATUS_BLOCKED (KAWETH_STATUS_CLOSING | KAWETH_STATUS_SUSPENDING)
1da177e4
LT		 81
82#define KAWETH_PACKET_FILTER_PROMISCUOUS 0x01
83#define KAWETH_PACKET_FILTER_ALL_MULTICAST 0x02
84#define KAWETH_PACKET_FILTER_DIRECTED 0x04
85#define KAWETH_PACKET_FILTER_BROADCAST 0x08
86#define KAWETH_PACKET_FILTER_MULTICAST 0x10
87
88/* Table 7 */
89#define KAWETH_COMMAND_GET_ETHERNET_DESC 0x00
90#define KAWETH_COMMAND_MULTICAST_FILTERS 0x01
91#define KAWETH_COMMAND_SET_PACKET_FILTER 0x02
92#define KAWETH_COMMAND_STATISTICS 0x03
93#define KAWETH_COMMAND_SET_TEMP_MAC 0x06
94#define KAWETH_COMMAND_GET_TEMP_MAC 0x07
95#define KAWETH_COMMAND_SET_URB_SIZE 0x08
96#define KAWETH_COMMAND_SET_SOFS_WAIT 0x09
97#define KAWETH_COMMAND_SCAN 0xFF
98
99#define KAWETH_SOFS_TO_WAIT 0x05
100
101#define INTBUFFERSIZE 4
102
103#define STATE_OFFSET 0
104#define STATE_MASK 0x40
105#define STATE_SHIFT 5
106
1a2ea1df
ON		 107#define IS_BLOCKED(s) (s & KAWETH_STATUS_BLOCKED)
108
1da177e4
LT		 109
110MODULE_AUTHOR("Michael Zappe <[email protected]>, Stephane Alnet <[email protected]>, Brad Hards <[email protected]> and Oliver Neukum <[email protected]>");
111MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver");
112MODULE_LICENSE("GPL");
113
114static const char driver_name[] = "kaweth";
115
116static int kaweth_probe(
117 struct usb_interface *intf,
118 const struct usb_device_id *id /* from id_table */
119 );
120static void kaweth_disconnect(struct usb_interface *intf);
121static int kaweth_internal_control_msg(struct usb_device *usb_dev,
122 unsigned int pipe,
123 struct usb_ctrlrequest *cmd, void *data,
124 int len, int timeout);
1a2ea1df
ON		 125static int kaweth_suspend(struct usb_interface *intf, pm_message_t message);
126static int kaweth_resume(struct usb_interface *intf);
1da177e4
LT		 127
128/****************************************************************
129 * usb_device_id
130 ****************************************************************/
131static struct usb_device_id usb_klsi_table[] = {
132 { USB_DEVICE(0x03e8, 0x0008) }, /* AOX Endpoints USB Ethernet */
133 { USB_DEVICE(0x04bb, 0x0901) }, /* I-O DATA USB-ET/T */
134 { USB_DEVICE(0x0506, 0x03e8) }, /* 3Com 3C19250 */
135 { USB_DEVICE(0x0506, 0x11f8) }, /* 3Com 3C460 */
136 { USB_DEVICE(0x0557, 0x2002) }, /* ATEN USB Ethernet */
137 { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */
138 { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */
139 { USB_DEVICE(0x0565, 0x0003) }, /* Optus@Home UEP1045A */
140 { USB_DEVICE(0x0565, 0x0005) }, /* Peracom Enet2 */
141 { USB_DEVICE(0x05e9, 0x0008) }, /* KLSI KL5KUSB101B */
142 { USB_DEVICE(0x05e9, 0x0009) }, /* KLSI KL5KUSB101B (Board change) */
143 { USB_DEVICE(0x066b, 0x2202) }, /* Linksys USB10T */
144 { USB_DEVICE(0x06e1, 0x0008) }, /* ADS USB-10BT */
145 { USB_DEVICE(0x06e1, 0x0009) }, /* ADS USB-10BT */
146 { USB_DEVICE(0x0707, 0x0100) }, /* SMC 2202USB */
147 { USB_DEVICE(0x07aa, 0x0001) }, /* Correga K.K. */
148 { USB_DEVICE(0x07b8, 0x4000) }, /* D-Link DU-E10 */
149 { USB_DEVICE(0x0846, 0x1001) }, /* NetGear EA-101 */
150 { USB_DEVICE(0x0846, 0x1002) }, /* NetGear EA-101 */
151 { USB_DEVICE(0x085a, 0x0008) }, /* PortGear Ethernet Adapter */
152 { USB_DEVICE(0x085a, 0x0009) }, /* PortGear Ethernet Adapter */
153 { USB_DEVICE(0x087d, 0x5704) }, /* Jaton USB Ethernet Device Adapter */
154 { USB_DEVICE(0x0951, 0x0008) }, /* Kingston Technology USB Ethernet Adapter */
155 { USB_DEVICE(0x095a, 0x3003) }, /* Portsmith Express Ethernet Adapter */
156 { USB_DEVICE(0x10bd, 0x1427) }, /* ASANTE USB To Ethernet Adapter */
157 { USB_DEVICE(0x1342, 0x0204) }, /* Mobility USB-Ethernet Adapter */
158 { USB_DEVICE(0x13d2, 0x0400) }, /* Shark Pocket Adapter */
159 { USB_DEVICE(0x1485, 0x0001) }, /* Silicom U2E */
160 { USB_DEVICE(0x1485, 0x0002) }, /* Psion Dacom Gold Port Ethernet */
161 { USB_DEVICE(0x1645, 0x0005) }, /* Entrega E45 */
162 { USB_DEVICE(0x1645, 0x0008) }, /* Entrega USB Ethernet Adapter */
163 { USB_DEVICE(0x1645, 0x8005) }, /* PortGear Ethernet Adapter */
486ba2a9 164 { USB_DEVICE(0x1668, 0x0323) }, /* Actiontec USB Ethernet */
1da177e4
LT		 165 { USB_DEVICE(0x2001, 0x4000) }, /* D-link DSB-650C */
166 {} /* Null terminator */
167};
168
169MODULE_DEVICE_TABLE (usb, usb_klsi_table);
170
171/****************************************************************
172 * kaweth_driver
173 ****************************************************************/
174static struct usb_driver kaweth_driver = {
1da177e4
LT		 175 .name = driver_name,
176 .probe = kaweth_probe,
177 .disconnect = kaweth_disconnect,
1a2ea1df
ON		 178 .suspend = kaweth_suspend,
179 .resume = kaweth_resume,
1da177e4 180 .id_table = usb_klsi_table,
b98b98f9 181 .supports_autosuspend = 1,
1da177e4
LT		 182};
183
184typedef __u8 eth_addr_t[6];
185
186/****************************************************************
187 * usb_eth_dev
188 ****************************************************************/
189struct usb_eth_dev {
190 char *name;
191 __u16 vendor;
192 __u16 device;
193 void *pdata;
194};
195
196/****************************************************************
197 * kaweth_ethernet_configuration
198 * Refer Table 8
199 ****************************************************************/
200struct kaweth_ethernet_configuration
201{
202 __u8 size;
203 __u8 reserved1;
204 __u8 reserved2;
205 eth_addr_t hw_addr;
206 __u32 statistics_mask;
207 __le16 segment_size;
208 __u16 max_multicast_filters;
209 __u8 reserved3;
210} __attribute__ ((packed));
211
212/****************************************************************
213 * kaweth_device
214 ****************************************************************/
215struct kaweth_device
216{
217 spinlock_t device_lock;
218
219 __u32 status;
220 int end;
1da177e4
LT		 221 int suspend_lowmem_rx;
222 int suspend_lowmem_ctrl;
223 int linkstate;
1a2ea1df 224 int opened;
c4028958 225 struct delayed_work lowmem_work;
1da177e4
LT		 226
227 struct usb_device *dev;
b98b98f9 228 struct usb_interface *intf;
1da177e4
LT		 229 struct net_device *net;
230 wait_queue_head_t term_wait;
231
232 struct urb *rx_urb;
233 struct urb *tx_urb;
234 struct urb *irq_urb;
235
236 dma_addr_t intbufferhandle;
237 __u8 *intbuffer;
238 dma_addr_t rxbufferhandle;
239 __u8 *rx_buf;
240
241
242 struct sk_buff *tx_skb;
243
244 __u8 *firmware_buf;
245 __u8 scratch[KAWETH_SCRATCH_SIZE];
246 __u16 packet_filter_bitmap;
247
248 struct kaweth_ethernet_configuration configuration;
249
250 struct net_device_stats stats;
251};
252
253
254/****************************************************************
255 * kaweth_control
256 ****************************************************************/
257static int kaweth_control(struct kaweth_device *kaweth,
258 unsigned int pipe,
259 __u8 request,
260 __u8 requesttype,
261 __u16 value,
262 __u16 index,
263 void *data,
264 __u16 size,
265 int timeout)
266{
267 struct usb_ctrlrequest *dr;
268
fbe2bafc 269 dbg("kaweth_control()");
1da177e4
LT		 270
271 if(in_interrupt()) {
fbe2bafc 272 dbg("in_interrupt()");
1da177e4
LT		 273 return -EBUSY;
274 }
275
276 dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
277
278 if (!dr) {
fbe2bafc 279 dbg("kmalloc() failed");
1da177e4
LT		 280 return -ENOMEM;
281 }
282
283 dr->bRequestType= requesttype;
284 dr->bRequest = request;
285 dr->wValue = cpu_to_le16p(&value);
286 dr->wIndex = cpu_to_le16p(&index);
287 dr->wLength = cpu_to_le16p(&size);
288
289 return kaweth_internal_control_msg(kaweth->dev,
290 pipe,
291 dr,
292 data,
293 size,
294 timeout);
295}
296
297/****************************************************************
298 * kaweth_read_configuration
299 ****************************************************************/
300static int kaweth_read_configuration(struct kaweth_device *kaweth)
301{
302 int retval;
303
fbe2bafc 304 dbg("Reading kaweth configuration");
1da177e4
LT		 305
306 retval = kaweth_control(kaweth,
307 usb_rcvctrlpipe(kaweth->dev, 0),
308 KAWETH_COMMAND_GET_ETHERNET_DESC,
309 USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
310 0,
311 0,
312 (void *)&kaweth->configuration,
313 sizeof(kaweth->configuration),
314 KAWETH_CONTROL_TIMEOUT);
315
316 return retval;
317}
318
319/****************************************************************
320 * kaweth_set_urb_size
321 ****************************************************************/
322static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size)
323{
324 int retval;
325
fbe2bafc 326 dbg("Setting URB size to %d", (unsigned)urb_size);
1da177e4
LT		 327
328 retval = kaweth_control(kaweth,
329 usb_sndctrlpipe(kaweth->dev, 0),
330 KAWETH_COMMAND_SET_URB_SIZE,
331 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
332 urb_size,
333 0,
334 (void *)&kaweth->scratch,
335 0,
336 KAWETH_CONTROL_TIMEOUT);
337
338 return retval;
339}
340
341/****************************************************************
342 * kaweth_set_sofs_wait
343 ****************************************************************/
344static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait)
345{
346 int retval;
347
fbe2bafc 348 dbg("Set SOFS wait to %d", (unsigned)sofs_wait);
1da177e4
LT		 349
350 retval = kaweth_control(kaweth,
351 usb_sndctrlpipe(kaweth->dev, 0),
352 KAWETH_COMMAND_SET_SOFS_WAIT,
353 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
354 sofs_wait,
355 0,
356 (void *)&kaweth->scratch,
357 0,
358 KAWETH_CONTROL_TIMEOUT);
359
360 return retval;
361}
362
363/****************************************************************
364 * kaweth_set_receive_filter
365 ****************************************************************/
366static int kaweth_set_receive_filter(struct kaweth_device *kaweth,
367 __u16 receive_filter)
368{
369 int retval;
370
fbe2bafc 371 dbg("Set receive filter to %d", (unsigned)receive_filter);
1da177e4
LT		 372
373 retval = kaweth_control(kaweth,
374 usb_sndctrlpipe(kaweth->dev, 0),
375 KAWETH_COMMAND_SET_PACKET_FILTER,
376 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
377 receive_filter,
378 0,
379 (void *)&kaweth->scratch,
380 0,
381 KAWETH_CONTROL_TIMEOUT);
382
383 return retval;
384}
385
386/****************************************************************
387 * kaweth_download_firmware
388 ****************************************************************/
389static int kaweth_download_firmware(struct kaweth_device *kaweth,
390 __u8 *data,
391 __u16 data_len,
392 __u8 interrupt,
393 __u8 type)
394{
395 if(data_len > KAWETH_FIRMWARE_BUF_SIZE) {
fbe2bafc 396 err("Firmware too big: %d", data_len);
1da177e4
LT		 397 return -ENOSPC;
398 }
399
400 memcpy(kaweth->firmware_buf, data, data_len);
401
402 kaweth->firmware_buf[2] = (data_len & 0xFF) - 7;
403 kaweth->firmware_buf[3] = data_len >> 8;
404 kaweth->firmware_buf[4] = type;
405 kaweth->firmware_buf[5] = interrupt;
406
fbe2bafc 407 dbg("High: %i, Low:%i", kaweth->firmware_buf[3],
1da177e4
LT		 408 kaweth->firmware_buf[2]);
409
fbe2bafc 410 dbg("Downloading firmware at %p to kaweth device at %p",
1da177e4
LT		 411 data,
412 kaweth);
fbe2bafc 413 dbg("Firmware length: %d", data_len);
1da177e4
LT		 414
415 return kaweth_control(kaweth,
416 usb_sndctrlpipe(kaweth->dev, 0),
417 KAWETH_COMMAND_SCAN,
418 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
419 0,
420 0,
421 (void *)kaweth->firmware_buf,
422 data_len,
423 KAWETH_CONTROL_TIMEOUT);
424}
425
426/****************************************************************
427 * kaweth_trigger_firmware
428 ****************************************************************/
429static int kaweth_trigger_firmware(struct kaweth_device *kaweth,
430 __u8 interrupt)
431{
432 kaweth->firmware_buf[0] = 0xB6;
433 kaweth->firmware_buf[1] = 0xC3;
434 kaweth->firmware_buf[2] = 0x01;
435 kaweth->firmware_buf[3] = 0x00;
436 kaweth->firmware_buf[4] = 0x06;
437 kaweth->firmware_buf[5] = interrupt;
438 kaweth->firmware_buf[6] = 0x00;
439 kaweth->firmware_buf[7] = 0x00;
440
fbe2bafc 441 dbg("Triggering firmware");
1da177e4
LT		 442
443 return kaweth_control(kaweth,
444 usb_sndctrlpipe(kaweth->dev, 0),
445 KAWETH_COMMAND_SCAN,
446 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
447 0,
448 0,
449 (void *)kaweth->firmware_buf,
450 8,
451 KAWETH_CONTROL_TIMEOUT);
452}
453
454/****************************************************************
455 * kaweth_reset
456 ****************************************************************/
457static int kaweth_reset(struct kaweth_device *kaweth)
458{
459 int result;
460
fbe2bafc 461 dbg("kaweth_reset(%p)", kaweth);
1da177e4
LT		 462 result = kaweth_control(kaweth,
463 usb_sndctrlpipe(kaweth->dev, 0),
464 USB_REQ_SET_CONFIGURATION,
465 0,
466 kaweth->dev->config[0].desc.bConfigurationValue,
467 0,
468 NULL,
469 0,
470 KAWETH_CONTROL_TIMEOUT);
471
f2d45cd9 472 mdelay(10);
1da177e4 473
fbe2bafc 474 dbg("kaweth_reset() returns %d.",result);
1da177e4
LT		 475
476 return result;
477}
478
7d12e780 479static void kaweth_usb_receive(struct urb *);
55016f10 480static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t);
1da177e4
LT		 481
482/****************************************************************
483 int_callback
484*****************************************************************/
485
55016f10 486static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t mf)
1da177e4
LT		 487{
488 int status;
489
490 status = usb_submit_urb (kaweth->irq_urb, mf);
491 if (unlikely(status == -ENOMEM)) {
492 kaweth->suspend_lowmem_ctrl = 1;
493 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
494 } else {
495 kaweth->suspend_lowmem_ctrl = 0;
496 }
497
498 if (status)
499 err ("can't resubmit intr, %s-%s, status %d",
500 kaweth->dev->bus->bus_name,
501 kaweth->dev->devpath, status);
502}
503
7d12e780 504static void int_callback(struct urb *u)
1da177e4
LT		 505{
506 struct kaweth_device *kaweth = u->context;
507 int act_state;
508
509 switch (u->status) {
510 case 0: /* success */
511 break;
512 case -ECONNRESET: /* unlink */
513 case -ENOENT:
514 case -ESHUTDOWN:
515 return;
516 /* -EPIPE: should clear the halt */
517 default: /* error */
518 goto resubmit;
519 }
520
521 /* we check the link state to report changes */
522 if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) {
58125f95 523 if (act_state)
1da177e4
LT		 524 netif_carrier_on(kaweth->net);
525 else
526 netif_carrier_off(kaweth->net);
527
528 kaweth->linkstate = act_state;
529 }
530resubmit:
531 kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC);
532}
533
c4028958 534static void kaweth_resubmit_tl(struct work_struct *work)
1da177e4 535{
c4028958
DH		 536 struct kaweth_device *kaweth =
537 container_of(work, struct kaweth_device, lowmem_work.work);
1da177e4 538
1a2ea1df 539 if (IS_BLOCKED(kaweth->status))
1da177e4
LT		 540 return;
541
542 if (kaweth->suspend_lowmem_rx)
543 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
544
545 if (kaweth->suspend_lowmem_ctrl)
546 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
547}
548
549
550/****************************************************************
551 * kaweth_resubmit_rx_urb
552 ****************************************************************/
553static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth,
55016f10 554 gfp_t mem_flags)
1da177e4
LT		 555{
556 int result;
557
558 usb_fill_bulk_urb(kaweth->rx_urb,
559 kaweth->dev,
560 usb_rcvbulkpipe(kaweth->dev, 1),
561 kaweth->rx_buf,
562 KAWETH_BUF_SIZE,
563 kaweth_usb_receive,
564 kaweth);
565 kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
566 kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle;
567
568 if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) {
569 if (result == -ENOMEM) {
570 kaweth->suspend_lowmem_rx = 1;
571 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
572 }
fbe2bafc 573 err("resubmitting rx_urb %d failed", result);
1da177e4
LT		 574 } else {
575 kaweth->suspend_lowmem_rx = 0;
576 }
577
578 return result;
579}
580
581static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth);
582
583/****************************************************************
584 * kaweth_usb_receive
585 ****************************************************************/
7d12e780 586static void kaweth_usb_receive(struct urb *urb)
1da177e4
LT		 587{
588 struct kaweth_device *kaweth = urb->context;
589 struct net_device *net = kaweth->net;
590
591 int count = urb->actual_length;
592 int count2 = urb->transfer_buffer_length;
593
594 __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf);
595
596 struct sk_buff *skb;
597
598 if(unlikely(urb->status == -ECONNRESET || urb->status == -ESHUTDOWN))
599 /* we are killed - set a flag and wake the disconnect handler */
600 {
601 kaweth->end = 1;
602 wake_up(&kaweth->term_wait);
603 return;
604 }
605
1a2ea1df
ON		 606 spin_lock(&kaweth->device_lock);
607 if (IS_BLOCKED(kaweth->status)) {
608 spin_unlock(&kaweth->device_lock);
1da177e4 609 return;
1a2ea1df
ON		 610 }
611 spin_unlock(&kaweth->device_lock);
1da177e4
LT		 612
613 if(urb->status && urb->status != -EREMOTEIO && count != 1) {
fbe2bafc 614 err("%s RX status: %d count: %d packet_len: %d",
1da177e4
LT		 615 net->name,
616 urb->status,
617 count,
618 (int)pkt_len);
619 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
620 return;
621 }
622
623 if(kaweth->net && (count > 2)) {
624 if(pkt_len > (count - 2)) {
fbe2bafc
ON		 625 err("Packet length too long for USB frame (pkt_len: %x, count: %x)",pkt_len, count);
626 err("Packet len & 2047: %x", pkt_len & 2047);
627 err("Count 2: %x", count2);
1da177e4
LT		 628 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
629 return;
630 }
631
632 if(!(skb = dev_alloc_skb(pkt_len+2))) {
633 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
634 return;
635 }
636
637 skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
638
639 skb->dev = net;
640
641 eth_copy_and_sum(skb, kaweth->rx_buf + 2, pkt_len, 0);
642
643 skb_put(skb, pkt_len);
644
645 skb->protocol = eth_type_trans(skb, net);
646
647 netif_rx(skb);
648
649 kaweth->stats.rx_packets++;
650 kaweth->stats.rx_bytes += pkt_len;
651 }
652
653 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
654}
655
656/****************************************************************
657 * kaweth_open
658 ****************************************************************/
659static int kaweth_open(struct net_device *net)
660{
661 struct kaweth_device *kaweth = netdev_priv(net);
662 int res;
663
fbe2bafc 664 dbg("Opening network device.");
1da177e4 665
b98b98f9
ON		 666 res = usb_autopm_get_interface(kaweth->intf);
667 if (res) {
668 err("Interface cannot be resumed.");
669 return -EIO;
670 }
1da177e4
LT		 671 res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL);
672 if (res)
b98b98f9 673 goto err_out;
1da177e4
LT		 674
675 usb_fill_int_urb(
676 kaweth->irq_urb,
677 kaweth->dev,
678 usb_rcvintpipe(kaweth->dev, 3),
679 kaweth->intbuffer,
680 INTBUFFERSIZE,
681 int_callback,
682 kaweth,
683 250); /* overriding the descriptor */
684 kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle;
685 kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
686
687 res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL);
688 if (res) {
689 usb_kill_urb(kaweth->rx_urb);
b98b98f9 690 goto err_out;
1da177e4 691 }
1a2ea1df 692 kaweth->opened = 1;
1da177e4
LT		 693
694 netif_start_queue(net);
695
696 kaweth_async_set_rx_mode(kaweth);
697 return 0;
b98b98f9
ON		 698
699err_out:
700 usb_autopm_enable(kaweth->intf);
701 return -EIO;
1da177e4
LT		 702}
703
704/****************************************************************
b98b98f9 705 * kaweth_kill_urbs
1da177e4 706 ****************************************************************/
1a2ea1df 707static void kaweth_kill_urbs(struct kaweth_device *kaweth)
1da177e4 708{
1da177e4
LT		 709 usb_kill_urb(kaweth->irq_urb);
710 usb_kill_urb(kaweth->rx_urb);
d23b536b 711 usb_kill_urb(kaweth->tx_urb);
1da177e4
LT		 712
713 flush_scheduled_work();
714
715 /* a scheduled work may have resubmitted,
716 we hit them again */
717 usb_kill_urb(kaweth->irq_urb);
718 usb_kill_urb(kaweth->rx_urb);
1a2ea1df
ON		 719}
720
721/****************************************************************
722 * kaweth_close
723 ****************************************************************/
724static int kaweth_close(struct net_device *net)
725{
726 struct kaweth_device *kaweth = netdev_priv(net);
727
728 netif_stop_queue(net);
729 kaweth->opened = 0;
730
731 kaweth->status |= KAWETH_STATUS_CLOSING;
732
733 kaweth_kill_urbs(kaweth);
1da177e4
LT		 734
735 kaweth->status &= ~KAWETH_STATUS_CLOSING;
736
b98b98f9
ON		 737 usb_autopm_enable(kaweth->intf);
738
1da177e4
LT		 739 return 0;
740}
741
742static void kaweth_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
743{
b3ebd522 744 struct kaweth_device *kaweth = netdev_priv(dev);
1da177e4
LT		 745
746 strlcpy(info->driver, driver_name, sizeof(info->driver));
b3ebd522
ON		 747 usb_make_path(kaweth->dev, info->bus_info, sizeof (info->bus_info));
748}
749
750static u32 kaweth_get_link(struct net_device *dev)
751{
752 struct kaweth_device *kaweth = netdev_priv(dev);
753
754 return kaweth->linkstate;
1da177e4
LT		 755}
756
757static struct ethtool_ops ops = {
b3ebd522
ON		 758 .get_drvinfo = kaweth_get_drvinfo,
759 .get_link = kaweth_get_link
1da177e4
LT		 760};
761
762/****************************************************************
763 * kaweth_usb_transmit_complete
764 ****************************************************************/
7d12e780 765static void kaweth_usb_transmit_complete(struct urb *urb)
1da177e4
LT		 766{
767 struct kaweth_device *kaweth = urb->context;
768 struct sk_buff *skb = kaweth->tx_skb;
769
770 if (unlikely(urb->status != 0))
771 if (urb->status != -ENOENT)
fbe2bafc 772 dbg("%s: TX status %d.", kaweth->net->name, urb->status);
1da177e4
LT		 773
774 netif_wake_queue(kaweth->net);
775 dev_kfree_skb_irq(skb);
776}
777
778/****************************************************************
779 * kaweth_start_xmit
780 ****************************************************************/
781static int kaweth_start_xmit(struct sk_buff *skb, struct net_device *net)
782{
783 struct kaweth_device *kaweth = netdev_priv(net);
784 __le16 *private_header;
785
786 int res;
787
788 spin_lock(&kaweth->device_lock);
789
1da177e4
LT		 790 kaweth_async_set_rx_mode(kaweth);
791 netif_stop_queue(net);
1a2ea1df
ON		 792 if (IS_BLOCKED(kaweth->status)) {
793 goto skip;
794 }
1da177e4
LT		 795
796 /* We now decide whether we can put our special header into the sk_buff */
797 if (skb_cloned(skb) || skb_headroom(skb) < 2) {
798 /* no such luck - we make our own */
799 struct sk_buff *copied_skb;
800 copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC);
801 dev_kfree_skb_irq(skb);
802 skb = copied_skb;
803 if (!copied_skb) {
804 kaweth->stats.tx_errors++;
805 netif_start_queue(net);
806 spin_unlock(&kaweth->device_lock);
807 return 0;
808 }
809 }
810
811 private_header = (__le16 *)__skb_push(skb, 2);
812 *private_header = cpu_to_le16(skb->len-2);
813 kaweth->tx_skb = skb;
814
815 usb_fill_bulk_urb(kaweth->tx_urb,
816 kaweth->dev,
817 usb_sndbulkpipe(kaweth->dev, 2),
818 private_header,
819 skb->len,
820 kaweth_usb_transmit_complete,
821 kaweth);
822 kaweth->end = 0;
1da177e4
LT		 823
824 if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC)))
825 {
fbe2bafc 826 warn("kaweth failed tx_urb %d", res);
1a2ea1df 827skip:
1da177e4
LT		 828 kaweth->stats.tx_errors++;
829
830 netif_start_queue(net);
831 dev_kfree_skb_irq(skb);
832 }
833 else
834 {
835 kaweth->stats.tx_packets++;
836 kaweth->stats.tx_bytes += skb->len;
837 net->trans_start = jiffies;
838 }
839
840 spin_unlock(&kaweth->device_lock);
841
842 return 0;
843}
844
845/****************************************************************
846 * kaweth_set_rx_mode
847 ****************************************************************/
848static void kaweth_set_rx_mode(struct net_device *net)
849{
850 struct kaweth_device *kaweth = netdev_priv(net);
851
852 __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED |
853 KAWETH_PACKET_FILTER_BROADCAST |
854 KAWETH_PACKET_FILTER_MULTICAST;
855
fbe2bafc 856 dbg("Setting Rx mode to %d", packet_filter_bitmap);
1da177e4
LT		 857
858 netif_stop_queue(net);
859
860 if (net->flags & IFF_PROMISC) {
861 packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS;
862 }
863 else if ((net->mc_count) || (net->flags & IFF_ALLMULTI)) {
864 packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST;
865 }
866
867 kaweth->packet_filter_bitmap = packet_filter_bitmap;
868 netif_wake_queue(net);
869}
870
871/****************************************************************
872 * kaweth_async_set_rx_mode
873 ****************************************************************/
874static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth)
875{
876 __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap;
877 kaweth->packet_filter_bitmap = 0;
878 if (packet_filter_bitmap == 0)
879 return;
880
881 {
882 int result;
883 result = kaweth_control(kaweth,
884 usb_sndctrlpipe(kaweth->dev, 0),
885 KAWETH_COMMAND_SET_PACKET_FILTER,
886 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
887 packet_filter_bitmap,
888 0,
889 (void *)&kaweth->scratch,
890 0,
891 KAWETH_CONTROL_TIMEOUT);
892
893 if(result < 0) {
fbe2bafc 894 err("Failed to set Rx mode: %d", result);
1da177e4
LT		 895 }
896 else {
fbe2bafc 897 dbg("Set Rx mode to %d", packet_filter_bitmap);
1da177e4
LT		 898 }
899 }
900}
901
902/****************************************************************
903 * kaweth_netdev_stats
904 ****************************************************************/
905static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev)
906{
907 struct kaweth_device *kaweth = netdev_priv(dev);
908 return &kaweth->stats;
909}
910
911/****************************************************************
912 * kaweth_tx_timeout
913 ****************************************************************/
914static void kaweth_tx_timeout(struct net_device *net)
915{
916 struct kaweth_device *kaweth = netdev_priv(net);
917
fbe2bafc 918 warn("%s: Tx timed out. Resetting.", net->name);
1da177e4
LT		 919 kaweth->stats.tx_errors++;
920 net->trans_start = jiffies;
921
922 usb_unlink_urb(kaweth->tx_urb);
923}
924
1a2ea1df
ON		 925/****************************************************************
926 * kaweth_suspend
927 ****************************************************************/
928static int kaweth_suspend(struct usb_interface *intf, pm_message_t message)
929{
930 struct kaweth_device *kaweth = usb_get_intfdata(intf);
931 unsigned long flags;
932
b98b98f9 933 dbg("Suspending device");
1a2ea1df
ON		 934 spin_lock_irqsave(&kaweth->device_lock, flags);
935 kaweth->status |= KAWETH_STATUS_SUSPENDING;
936 spin_unlock_irqrestore(&kaweth->device_lock, flags);
937
938 kaweth_kill_urbs(kaweth);
939 return 0;
940}
941
942/****************************************************************
943 * kaweth_resume
944 ****************************************************************/
945static int kaweth_resume(struct usb_interface *intf)
946{
947 struct kaweth_device *kaweth = usb_get_intfdata(intf);
948 unsigned long flags;
949
b98b98f9 950 dbg("Resuming device");
1a2ea1df
ON		 951 spin_lock_irqsave(&kaweth->device_lock, flags);
952 kaweth->status &= ~KAWETH_STATUS_SUSPENDING;
953 spin_unlock_irqrestore(&kaweth->device_lock, flags);
954
955 if (!kaweth->opened)
956 return 0;
957 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
958 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
959
960 return 0;
961}
962
1da177e4
LT		 963/****************************************************************
964 * kaweth_probe
965 ****************************************************************/
966static int kaweth_probe(
967 struct usb_interface *intf,
968 const struct usb_device_id *id /* from id_table */
969 )
970{
971 struct usb_device *dev = interface_to_usbdev(intf);
972 struct kaweth_device *kaweth;
973 struct net_device *netdev;
974 const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
975 int result = 0;
976
fbe2bafc 977 dbg("Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x",
1da177e4
LT		 978 dev->devnum,
979 le16_to_cpu(dev->descriptor.idVendor),
980 le16_to_cpu(dev->descriptor.idProduct),
981 le16_to_cpu(dev->descriptor.bcdDevice));
982
fbe2bafc 983 dbg("Device at %p", dev);
1da177e4 984
fbe2bafc 985 dbg("Descriptor length: %x type: %x",
1da177e4
LT		 986 (int)dev->descriptor.bLength,
987 (int)dev->descriptor.bDescriptorType);
988
989 netdev = alloc_etherdev(sizeof(*kaweth));
990 if (!netdev)
991 return -ENOMEM;
992
993 kaweth = netdev_priv(netdev);
994 kaweth->dev = dev;
995 kaweth->net = netdev;
996
997 spin_lock_init(&kaweth->device_lock);
998 init_waitqueue_head(&kaweth->term_wait);
999
fbe2bafc 1000 dbg("Resetting.");
1da177e4
LT		 1001
1002 kaweth_reset(kaweth);
1003
1004 /*
1005 * If high byte of bcdDevice is nonzero, firmware is already
1006 * downloaded. Don't try to do it again, or we'll hang the device.
1007 */
1008
1009 if (le16_to_cpu(dev->descriptor.bcdDevice) >> 8) {
fbe2bafc 1010 info("Firmware present in device.");
1da177e4
LT		 1011 } else {
1012 /* Download the firmware */
fbe2bafc 1013 info("Downloading firmware...");
1da177e4
LT		 1014 kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL);
1015 if ((result = kaweth_download_firmware(kaweth,
1016 kaweth_new_code,
1017 len_kaweth_new_code,
1018 100,
1019 2)) < 0) {
fbe2bafc 1020 err("Error downloading firmware (%d)", result);
1da177e4
LT		 1021 goto err_fw;
1022 }
1023
1024 if ((result = kaweth_download_firmware(kaweth,
1025 kaweth_new_code_fix,
1026 len_kaweth_new_code_fix,
1027 100,
1028 3)) < 0) {
fbe2bafc 1029 err("Error downloading firmware fix (%d)", result);
1da177e4
LT		 1030 goto err_fw;
1031 }
1032
1033 if ((result = kaweth_download_firmware(kaweth,
1034 kaweth_trigger_code,
1035 len_kaweth_trigger_code,
1036 126,
1037 2)) < 0) {
fbe2bafc 1038 err("Error downloading trigger code (%d)", result);
1da177e4
LT		 1039 goto err_fw;
1040
1041 }
1042
1043 if ((result = kaweth_download_firmware(kaweth,
1044 kaweth_trigger_code_fix,
1045 len_kaweth_trigger_code_fix,
1046 126,
1047 3)) < 0) {
fbe2bafc 1048 err("Error downloading trigger code fix (%d)", result);
1da177e4
LT		 1049 goto err_fw;
1050 }
1051
1052
1053 if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
fbe2bafc 1054 err("Error triggering firmware (%d)", result);
1da177e4
LT		 1055 goto err_fw;
1056 }
1057
1058 /* Device will now disappear for a moment... */
fbe2bafc 1059 info("Firmware loaded. I'll be back...");
1da177e4
LT		 1060err_fw:
1061 free_page((unsigned long)kaweth->firmware_buf);
1062 free_netdev(netdev);
1063 return -EIO;
1064 }
1065
1066 result = kaweth_read_configuration(kaweth);
1067
1068 if(result < 0) {
fbe2bafc 1069 err("Error reading configuration (%d), no net device created", result);
1da177e4
LT		 1070 goto err_free_netdev;
1071 }
1072
fbe2bafc
ON		 1073 info("Statistics collection: %x", kaweth->configuration.statistics_mask);
1074 info("Multicast filter limit: %x", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
1075 info("MTU: %d", le16_to_cpu(kaweth->configuration.segment_size));
1076 info("Read MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
1da177e4
LT		 1077 (int)kaweth->configuration.hw_addr[0],
1078 (int)kaweth->configuration.hw_addr[1],
1079 (int)kaweth->configuration.hw_addr[2],
1080 (int)kaweth->configuration.hw_addr[3],
1081 (int)kaweth->configuration.hw_addr[4],
1082 (int)kaweth->configuration.hw_addr[5]);
1083
1084 if(!memcmp(&kaweth->configuration.hw_addr,
1085 &bcast_addr,
1086 sizeof(bcast_addr))) {
fbe2bafc 1087 err("Firmware not functioning properly, no net device created");
1da177e4
LT		 1088 goto err_free_netdev;
1089 }
1090
1091 if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
fbe2bafc 1092 dbg("Error setting URB size");
1da177e4
LT		 1093 goto err_free_netdev;
1094 }
1095
1096 if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
fbe2bafc 1097 err("Error setting SOFS wait");
1da177e4
LT		 1098 goto err_free_netdev;
1099 }
1100
1101 result = kaweth_set_receive_filter(kaweth,
1102 KAWETH_PACKET_FILTER_DIRECTED |
1103 KAWETH_PACKET_FILTER_BROADCAST |
1104 KAWETH_PACKET_FILTER_MULTICAST);
1105
1106 if(result < 0) {
fbe2bafc 1107 err("Error setting receive filter");
1da177e4
LT		 1108 goto err_free_netdev;
1109 }
1110
fbe2bafc 1111 dbg("Initializing net device.");
1da177e4 1112
b98b98f9
ON		 1113 kaweth->intf = intf;
1114
1da177e4
LT		 1115 kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1116 if (!kaweth->tx_urb)
1117 goto err_free_netdev;
1118 kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1119 if (!kaweth->rx_urb)
1120 goto err_only_tx;
1121 kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
1122 if (!kaweth->irq_urb)
1123 goto err_tx_and_rx;
1124
1125 kaweth->intbuffer = usb_buffer_alloc( kaweth->dev,
1126 INTBUFFERSIZE,
1127 GFP_KERNEL,
1128 &kaweth->intbufferhandle);
1129 if (!kaweth->intbuffer)
1130 goto err_tx_and_rx_and_irq;
1131 kaweth->rx_buf = usb_buffer_alloc( kaweth->dev,
1132 KAWETH_BUF_SIZE,
1133 GFP_KERNEL,
1134 &kaweth->rxbufferhandle);
1135 if (!kaweth->rx_buf)
1136 goto err_all_but_rxbuf;
1137
1138 memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr));
1139 memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr,
1140 sizeof(kaweth->configuration.hw_addr));
1141
1142 netdev->open = kaweth_open;
1143 netdev->stop = kaweth_close;
1144
1145 netdev->watchdog_timeo = KAWETH_TX_TIMEOUT;
1146 netdev->tx_timeout = kaweth_tx_timeout;
1147
1148 netdev->hard_start_xmit = kaweth_start_xmit;
1149 netdev->set_multicast_list = kaweth_set_rx_mode;
1150 netdev->get_stats = kaweth_netdev_stats;
1151 netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size);
1152 SET_ETHTOOL_OPS(netdev, &ops);
1153
1154 /* kaweth is zeroed as part of alloc_netdev */
1155
c4028958 1156 INIT_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl);
1da177e4
LT		 1157
1158 SET_MODULE_OWNER(netdev);
1159
1160 usb_set_intfdata(intf, kaweth);
1161
1162#if 0
1163// dma_supported() is deeply broken on almost all architectures
1164 if (dma_supported (&intf->dev, 0xffffffffffffffffULL))
1165 kaweth->net->features |= NETIF_F_HIGHDMA;
1166#endif
1167
1168 SET_NETDEV_DEV(netdev, &intf->dev);
1169 if (register_netdev(netdev) != 0) {
fbe2bafc 1170 err("Error registering netdev.");
1da177e4
LT		 1171 goto err_intfdata;
1172 }
1173
fbe2bafc 1174 info("kaweth interface created at %s", kaweth->net->name);
1da177e4 1175
fbe2bafc 1176 dbg("Kaweth probe returning.");
1da177e4
LT		 1177
1178 return 0;
1179
1180err_intfdata:
1181 usb_set_intfdata(intf, NULL);
1182 usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1183err_all_but_rxbuf:
1184 usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1185err_tx_and_rx_and_irq:
1186 usb_free_urb(kaweth->irq_urb);
1187err_tx_and_rx:
1188 usb_free_urb(kaweth->rx_urb);
1189err_only_tx:
1190 usb_free_urb(kaweth->tx_urb);
1191err_free_netdev:
1192 free_netdev(netdev);
1193
1194 return -EIO;
1195}
1196
1197/****************************************************************
1198 * kaweth_disconnect
1199 ****************************************************************/
1200static void kaweth_disconnect(struct usb_interface *intf)
1201{
1202 struct kaweth_device *kaweth = usb_get_intfdata(intf);
1203 struct net_device *netdev;
1204
fbe2bafc 1205 info("Unregistering");
1da177e4
LT		 1206
1207 usb_set_intfdata(intf, NULL);
1208 if (!kaweth) {
fbe2bafc 1209 warn("unregistering non-existant device");
1da177e4
LT		 1210 return;
1211 }
1212 netdev = kaweth->net;
1da177e4 1213
fbe2bafc 1214 dbg("Unregistering net device");
1da177e4
LT		 1215 unregister_netdev(netdev);
1216
1217 usb_free_urb(kaweth->rx_urb);
1218 usb_free_urb(kaweth->tx_urb);
1219 usb_free_urb(kaweth->irq_urb);
1220
1221 usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1222 usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1223
1224 free_netdev(netdev);
1225}
1226
1227
1228// FIXME this completion stuff is a modified clone of
1229// an OLD version of some stuff in usb.c ...
1230struct usb_api_data {
1231 wait_queue_head_t wqh;
1232 int done;
1233};
1234
1235/*-------------------------------------------------------------------*
1236 * completion handler for compatibility wrappers (sync control/bulk) *
1237 *-------------------------------------------------------------------*/
7d12e780 1238static void usb_api_blocking_completion(struct urb *urb)
1da177e4
LT		 1239{
1240 struct usb_api_data *awd = (struct usb_api_data *)urb->context;
1241
1242 awd->done=1;
1243 wake_up(&awd->wqh);
1244}
1245
1246/*-------------------------------------------------------------------*
1247 * COMPATIBILITY STUFF *
1248 *-------------------------------------------------------------------*/
1249
1250// Starts urb and waits for completion or timeout
1251static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length)
1252{
1253 struct usb_api_data awd;
1254 int status;
1255
1256 init_waitqueue_head(&awd.wqh);
1257 awd.done = 0;
1258
1259 urb->context = &awd;
1260 status = usb_submit_urb(urb, GFP_NOIO);
1261 if (status) {
1262 // something went wrong
1263 usb_free_urb(urb);
1264 return status;
1265 }
1266
1267 if (!wait_event_timeout(awd.wqh, awd.done, timeout)) {
1268 // timeout
fbe2bafc 1269 warn("usb_control/bulk_msg: timeout");
1da177e4
LT		 1270 usb_kill_urb(urb); // remove urb safely
1271 status = -ETIMEDOUT;
1272 }
1273 else {
1274 status = urb->status;
1275 }
1276
1277 if (actual_length) {
1278 *actual_length = urb->actual_length;
1279 }
1280
1281 usb_free_urb(urb);
1282 return status;
1283}
1284
1285/*-------------------------------------------------------------------*/
1286// returns status (negative) or length (positive)
1287static int kaweth_internal_control_msg(struct usb_device *usb_dev,
1288 unsigned int pipe,
1289 struct usb_ctrlrequest *cmd, void *data,
1290 int len, int timeout)
1291{
1292 struct urb *urb;
1293 int retv;
b98b98f9 1294 int length = 0; /* shut up GCC */
1da177e4
LT		 1295
1296 urb = usb_alloc_urb(0, GFP_NOIO);
1297 if (!urb)
1298 return -ENOMEM;
1299
1300 usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data,
1301 len, usb_api_blocking_completion, NULL);
1302
1303 retv = usb_start_wait_urb(urb, timeout, &length);
1304 if (retv < 0) {
1305 return retv;
1306 }
1307 else {
1308 return length;
1309 }
1310}
1311
1312
1313/****************************************************************
1314 * kaweth_init
1315 ****************************************************************/
1316static int __init kaweth_init(void)
1317{
fbe2bafc 1318 dbg("Driver loading");
1da177e4
LT		 1319 return usb_register(&kaweth_driver);
1320}
1321
1322/****************************************************************
1323 * kaweth_exit
1324 ****************************************************************/
1325static void __exit kaweth_exit(void)
1326{
1327 usb_deregister(&kaweth_driver);
1328}
1329
1330module_init(kaweth_init);
1331module_exit(kaweth_exit);
1332
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