]> git.ipfire.org Git - people/arne_f/kernel.git/blame - drivers/net/usb/kaweth.c
projects / people / arne_f / kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
kaweth: use skb_cow_head() to deal with cloned skbs
[people/arne_f/kernel.git] / drivers / net / usb / 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 <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
9cb00073 28 * along with this program; if not, see <http://www.gnu.org/licenses/>.
1da177e4
LT		 29 *
30 ****************************************************************/
31
32/* TODO:
1da177e4
LT		 33 * Develop test procedures for USB net interfaces
34 * Run test procedures
35 * Fix bugs from previous two steps
36 * Snoop other OSs for any tricks we're not doing
1da177e4
LT		 37 * Reduce arbitrary timeouts
38 * Smart multicast support
39 * Temporary MAC change support
40 * Tunable SOFs parameter - ioctl()?
41 * Ethernet stats collection
42 * Code formatting improvements
43 */
44
45#include <linux/module.h>
1da177e4
LT		 46#include <linux/slab.h>
47#include <linux/string.h>
1da177e4
LT		 48#include <linux/delay.h>
49#include <linux/netdevice.h>
50#include <linux/etherdevice.h>
51#include <linux/usb.h>
52#include <linux/types.h>
53#include <linux/ethtool.h>
1da177e4
LT		 54#include <linux/dma-mapping.h>
55#include <linux/wait.h>
79682499 56#include <linux/firmware.h>
1da177e4 57#include <asm/uaccess.h>
1da177e4
LT		 58#include <asm/byteorder.h>
59
60#undef DEBUG
61
1da177e4
LT		 62#define KAWETH_MTU 1514
63#define KAWETH_BUF_SIZE 1664
64#define KAWETH_TX_TIMEOUT (5 * HZ)
65#define KAWETH_SCRATCH_SIZE 32
66#define KAWETH_FIRMWARE_BUF_SIZE 4096
2b2b2e35 67#define KAWETH_CONTROL_TIMEOUT (30000)
1da177e4
LT		 68
69#define KAWETH_STATUS_BROKEN 0x0000001
70#define KAWETH_STATUS_CLOSING 0x0000002
1a2ea1df
ON		 71#define KAWETH_STATUS_SUSPENDING 0x0000004
72
73#define KAWETH_STATUS_BLOCKED (KAWETH_STATUS_CLOSING | KAWETH_STATUS_SUSPENDING)
1da177e4
LT		 74
75#define KAWETH_PACKET_FILTER_PROMISCUOUS 0x01
76#define KAWETH_PACKET_FILTER_ALL_MULTICAST 0x02
77#define KAWETH_PACKET_FILTER_DIRECTED 0x04
78#define KAWETH_PACKET_FILTER_BROADCAST 0x08
79#define KAWETH_PACKET_FILTER_MULTICAST 0x10
80
81/* Table 7 */
82#define KAWETH_COMMAND_GET_ETHERNET_DESC 0x00
83#define KAWETH_COMMAND_MULTICAST_FILTERS 0x01
84#define KAWETH_COMMAND_SET_PACKET_FILTER 0x02
85#define KAWETH_COMMAND_STATISTICS 0x03
86#define KAWETH_COMMAND_SET_TEMP_MAC 0x06
87#define KAWETH_COMMAND_GET_TEMP_MAC 0x07
88#define KAWETH_COMMAND_SET_URB_SIZE 0x08
89#define KAWETH_COMMAND_SET_SOFS_WAIT 0x09
90#define KAWETH_COMMAND_SCAN 0xFF
91
92#define KAWETH_SOFS_TO_WAIT 0x05
93
94#define INTBUFFERSIZE 4
95
96#define STATE_OFFSET 0
97#define STATE_MASK 0x40
98#define STATE_SHIFT 5
99
1a2ea1df
ON		 100#define IS_BLOCKED(s) (s & KAWETH_STATUS_BLOCKED)
101
1da177e4
LT		 102
103MODULE_AUTHOR("Michael Zappe <zapman@interlan.net>, Stephane Alnet <stephane@u-picardie.fr>, Brad Hards <bhards@bigpond.net.au> and Oliver Neukum <oliver@neukum.org>");
104MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver");
105MODULE_LICENSE("GPL");
79682499
DW		 106MODULE_FIRMWARE("kaweth/new_code.bin");
107MODULE_FIRMWARE("kaweth/new_code_fix.bin");
108MODULE_FIRMWARE("kaweth/trigger_code.bin");
109MODULE_FIRMWARE("kaweth/trigger_code_fix.bin");
1da177e4
LT		 110
111static const char driver_name[] = "kaweth";
112
113static int kaweth_probe(
114 struct usb_interface *intf,
115 const struct usb_device_id *id /* from id_table */
116 );
117static void kaweth_disconnect(struct usb_interface *intf);
118static int kaweth_internal_control_msg(struct usb_device *usb_dev,
119 unsigned int pipe,
120 struct usb_ctrlrequest *cmd, void *data,
121 int len, int timeout);
1a2ea1df
ON		 122static int kaweth_suspend(struct usb_interface *intf, pm_message_t message);
123static int kaweth_resume(struct usb_interface *intf);
1da177e4
LT		 124
125/****************************************************************
126 * usb_device_id
127 ****************************************************************/
128static struct usb_device_id usb_klsi_table[] = {
129 { USB_DEVICE(0x03e8, 0x0008) }, /* AOX Endpoints USB Ethernet */
130 { USB_DEVICE(0x04bb, 0x0901) }, /* I-O DATA USB-ET/T */
131 { USB_DEVICE(0x0506, 0x03e8) }, /* 3Com 3C19250 */
132 { USB_DEVICE(0x0506, 0x11f8) }, /* 3Com 3C460 */
133 { USB_DEVICE(0x0557, 0x2002) }, /* ATEN USB Ethernet */
134 { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */
135 { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */
136 { USB_DEVICE(0x0565, 0x0003) }, /* Optus@Home UEP1045A */
137 { USB_DEVICE(0x0565, 0x0005) }, /* Peracom Enet2 */
138 { USB_DEVICE(0x05e9, 0x0008) }, /* KLSI KL5KUSB101B */
139 { USB_DEVICE(0x05e9, 0x0009) }, /* KLSI KL5KUSB101B (Board change) */
140 { USB_DEVICE(0x066b, 0x2202) }, /* Linksys USB10T */
141 { USB_DEVICE(0x06e1, 0x0008) }, /* ADS USB-10BT */
142 { USB_DEVICE(0x06e1, 0x0009) }, /* ADS USB-10BT */
143 { USB_DEVICE(0x0707, 0x0100) }, /* SMC 2202USB */
144 { USB_DEVICE(0x07aa, 0x0001) }, /* Correga K.K. */
145 { USB_DEVICE(0x07b8, 0x4000) }, /* D-Link DU-E10 */
dacf4fc8 146 { USB_DEVICE(0x07c9, 0xb010) }, /* Allied Telesyn AT-USB10 USB Ethernet Adapter */
1da177e4
LT		 147 { USB_DEVICE(0x0846, 0x1001) }, /* NetGear EA-101 */
148 { USB_DEVICE(0x0846, 0x1002) }, /* NetGear EA-101 */
149 { USB_DEVICE(0x085a, 0x0008) }, /* PortGear Ethernet Adapter */
150 { USB_DEVICE(0x085a, 0x0009) }, /* PortGear Ethernet Adapter */
151 { USB_DEVICE(0x087d, 0x5704) }, /* Jaton USB Ethernet Device Adapter */
152 { USB_DEVICE(0x0951, 0x0008) }, /* Kingston Technology USB Ethernet Adapter */
153 { USB_DEVICE(0x095a, 0x3003) }, /* Portsmith Express Ethernet Adapter */
154 { USB_DEVICE(0x10bd, 0x1427) }, /* ASANTE USB To Ethernet Adapter */
155 { USB_DEVICE(0x1342, 0x0204) }, /* Mobility USB-Ethernet Adapter */
156 { USB_DEVICE(0x13d2, 0x0400) }, /* Shark Pocket Adapter */
157 { USB_DEVICE(0x1485, 0x0001) }, /* Silicom U2E */
158 { USB_DEVICE(0x1485, 0x0002) }, /* Psion Dacom Gold Port Ethernet */
159 { USB_DEVICE(0x1645, 0x0005) }, /* Entrega E45 */
160 { USB_DEVICE(0x1645, 0x0008) }, /* Entrega USB Ethernet Adapter */
161 { USB_DEVICE(0x1645, 0x8005) }, /* PortGear Ethernet Adapter */
486ba2a9 162 { USB_DEVICE(0x1668, 0x0323) }, /* Actiontec USB Ethernet */
1da177e4
LT		 163 { USB_DEVICE(0x2001, 0x4000) }, /* D-link DSB-650C */
164 {} /* Null terminator */
165};
166
167MODULE_DEVICE_TABLE (usb, usb_klsi_table);
168
169/****************************************************************
170 * kaweth_driver
171 ****************************************************************/
172static struct usb_driver kaweth_driver = {
1da177e4
LT		 173 .name = driver_name,
174 .probe = kaweth_probe,
175 .disconnect = kaweth_disconnect,
1a2ea1df
ON		 176 .suspend = kaweth_suspend,
177 .resume = kaweth_resume,
1da177e4 178 .id_table = usb_klsi_table,
b98b98f9 179 .supports_autosuspend = 1,
e1f12eb6 180 .disable_hub_initiated_lpm = 1,
1da177e4
LT		 181};
182
183typedef __u8 eth_addr_t[6];
184
185/****************************************************************
186 * usb_eth_dev
187 ****************************************************************/
188struct 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 ****************************************************************/
199struct 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;
ba2d3587 209} __packed;
1da177e4
LT		 210
211/****************************************************************
212 * kaweth_device
213 ****************************************************************/
214struct kaweth_device
215{
216 spinlock_t device_lock;
217
218 __u32 status;
219 int end;
1da177e4
LT		 220 int suspend_lowmem_rx;
221 int suspend_lowmem_ctrl;
222 int linkstate;
1a2ea1df 223 int opened;
c4028958 224 struct delayed_work lowmem_work;
1da177e4
LT		 225
226 struct usb_device *dev;
b98b98f9 227 struct usb_interface *intf;
1da177e4
LT		 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
1da177e4
LT		 252/****************************************************************
253 * kaweth_control
254 ****************************************************************/
255static 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;
051b982b 266 int retval;
1da177e4 267
1da177e4 268 if(in_interrupt()) {
49ae25b0 269 netdev_dbg(kaweth->net, "in_interrupt()\n");
1da177e4
LT		 270 return -EBUSY;
271 }
272
273 dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
49ae25b0 274 if (!dr)
1da177e4 275 return -ENOMEM;
1da177e4 276
051b982b 277 dr->bRequestType = requesttype;
1da177e4 278 dr->bRequest = request;
da2bbdcc
HH		 279 dr->wValue = cpu_to_le16(value);
280 dr->wIndex = cpu_to_le16(index);
281 dr->wLength = cpu_to_le16(size);
1da177e4 282
051b982b
KC		 283 retval = kaweth_internal_control_msg(kaweth->dev,
284 pipe,
285 dr,
286 data,
287 size,
288 timeout);
289
290 kfree(dr);
291 return retval;
1da177e4
LT		 292}
293
294/****************************************************************
295 * kaweth_read_configuration
296 ****************************************************************/
297static int kaweth_read_configuration(struct kaweth_device *kaweth)
298{
299 int retval;
300
1da177e4
LT		 301 retval = kaweth_control(kaweth,
302 usb_rcvctrlpipe(kaweth->dev, 0),
303 KAWETH_COMMAND_GET_ETHERNET_DESC,
304 USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
305 0,
306 0,
307 (void *)&kaweth->configuration,
308 sizeof(kaweth->configuration),
309 KAWETH_CONTROL_TIMEOUT);
310
311 return retval;
312}
313
314/****************************************************************
315 * kaweth_set_urb_size
316 ****************************************************************/
317static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size)
318{
319 int retval;
320
49ae25b0 321 netdev_dbg(kaweth->net, "Setting URB size to %d\n", (unsigned)urb_size);
1da177e4
LT		 322
323 retval = kaweth_control(kaweth,
324 usb_sndctrlpipe(kaweth->dev, 0),
325 KAWETH_COMMAND_SET_URB_SIZE,
326 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
327 urb_size,
328 0,
329 (void *)&kaweth->scratch,
330 0,
331 KAWETH_CONTROL_TIMEOUT);
332
333 return retval;
334}
335
336/****************************************************************
337 * kaweth_set_sofs_wait
338 ****************************************************************/
339static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait)
340{
341 int retval;
342
49ae25b0 343 netdev_dbg(kaweth->net, "Set SOFS wait to %d\n", (unsigned)sofs_wait);
1da177e4
LT		 344
345 retval = kaweth_control(kaweth,
346 usb_sndctrlpipe(kaweth->dev, 0),
347 KAWETH_COMMAND_SET_SOFS_WAIT,
348 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
349 sofs_wait,
350 0,
351 (void *)&kaweth->scratch,
352 0,
353 KAWETH_CONTROL_TIMEOUT);
354
355 return retval;
356}
357
358/****************************************************************
359 * kaweth_set_receive_filter
360 ****************************************************************/
361static int kaweth_set_receive_filter(struct kaweth_device *kaweth,
362 __u16 receive_filter)
363{
364 int retval;
365
49ae25b0
GKH		 366 netdev_dbg(kaweth->net, "Set receive filter to %d\n",
367 (unsigned)receive_filter);
1da177e4
LT		 368
369 retval = kaweth_control(kaweth,
370 usb_sndctrlpipe(kaweth->dev, 0),
371 KAWETH_COMMAND_SET_PACKET_FILTER,
372 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
373 receive_filter,
374 0,
375 (void *)&kaweth->scratch,
376 0,
377 KAWETH_CONTROL_TIMEOUT);
378
379 return retval;
380}
381
382/****************************************************************
383 * kaweth_download_firmware
384 ****************************************************************/
385static int kaweth_download_firmware(struct kaweth_device *kaweth,
79682499 386 const char *fwname,
1da177e4
LT		 387 __u8 interrupt,
388 __u8 type)
389{
79682499
DW		 390 const struct firmware *fw;
391 int data_len;
392 int ret;
393
394 ret = request_firmware(&fw, fwname, &kaweth->dev->dev);
395 if (ret) {
db6b2219 396 dev_err(&kaweth->intf->dev, "Firmware request failed\n");
79682499
DW		 397 return ret;
398 }
399
400 if (fw->size > KAWETH_FIRMWARE_BUF_SIZE) {
db6b2219
GKH		 401 dev_err(&kaweth->intf->dev, "Firmware too big: %zu\n",
402 fw->size);
986e3f6e 403 release_firmware(fw);
1da177e4
LT		 404 return -ENOSPC;
405 }
79682499
DW		 406 data_len = fw->size;
407 memcpy(kaweth->firmware_buf, fw->data, fw->size);
1da177e4 408
79682499 409 release_firmware(fw);
1da177e4
LT		 410
411 kaweth->firmware_buf[2] = (data_len & 0xFF) - 7;
412 kaweth->firmware_buf[3] = data_len >> 8;
413 kaweth->firmware_buf[4] = type;
414 kaweth->firmware_buf[5] = interrupt;
415
49ae25b0 416 netdev_dbg(kaweth->net, "High: %i, Low:%i\n", kaweth->firmware_buf[3],
1da177e4
LT		 417 kaweth->firmware_buf[2]);
418
49ae25b0
GKH		 419 netdev_dbg(kaweth->net,
420 "Downloading firmware at %p to kaweth device at %p\n",
0abc1cee 421 kaweth->firmware_buf, kaweth);
49ae25b0 422 netdev_dbg(kaweth->net, "Firmware length: %d\n", data_len);
1da177e4
LT		 423
424 return kaweth_control(kaweth,
425 usb_sndctrlpipe(kaweth->dev, 0),
426 KAWETH_COMMAND_SCAN,
427 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
428 0,
429 0,
430 (void *)kaweth->firmware_buf,
431 data_len,
432 KAWETH_CONTROL_TIMEOUT);
433}
434
435/****************************************************************
436 * kaweth_trigger_firmware
437 ****************************************************************/
438static int kaweth_trigger_firmware(struct kaweth_device *kaweth,
439 __u8 interrupt)
440{
441 kaweth->firmware_buf[0] = 0xB6;
442 kaweth->firmware_buf[1] = 0xC3;
443 kaweth->firmware_buf[2] = 0x01;
444 kaweth->firmware_buf[3] = 0x00;
445 kaweth->firmware_buf[4] = 0x06;
446 kaweth->firmware_buf[5] = interrupt;
447 kaweth->firmware_buf[6] = 0x00;
448 kaweth->firmware_buf[7] = 0x00;
449
1da177e4
LT		 450 return kaweth_control(kaweth,
451 usb_sndctrlpipe(kaweth->dev, 0),
452 KAWETH_COMMAND_SCAN,
453 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
454 0,
455 0,
456 (void *)kaweth->firmware_buf,
457 8,
458 KAWETH_CONTROL_TIMEOUT);
459}
460
461/****************************************************************
462 * kaweth_reset
463 ****************************************************************/
464static int kaweth_reset(struct kaweth_device *kaweth)
465{
466 int result;
467
f0816ce3 468 result = usb_reset_configuration(kaweth->dev);
f2d45cd9 469 mdelay(10);
1da177e4 470
49ae25b0 471 netdev_dbg(kaweth->net, "kaweth_reset() returns %d.\n", result);
1da177e4
LT		 472
473 return result;
474}
475
7d12e780 476static void kaweth_usb_receive(struct urb *);
55016f10 477static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t);
1da177e4
LT		 478
479/****************************************************************
480 int_callback
481*****************************************************************/
482
55016f10 483static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t mf)
1da177e4
LT		 484{
485 int status;
486
487 status = usb_submit_urb (kaweth->irq_urb, mf);
488 if (unlikely(status == -ENOMEM)) {
489 kaweth->suspend_lowmem_ctrl = 1;
490 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
491 } else {
492 kaweth->suspend_lowmem_ctrl = 0;
493 }
494
495 if (status)
db6b2219
GKH		 496 dev_err(&kaweth->intf->dev,
497 "can't resubmit intr, %s-%s, status %d\n",
498 kaweth->dev->bus->bus_name,
499 kaweth->dev->devpath, status);
1da177e4
LT		 500}
501
7d12e780 502static void int_callback(struct urb *u)
1da177e4
LT		 503{
504 struct kaweth_device *kaweth = u->context;
505 int act_state;
c94cb314 506 int status = u->status;
1da177e4 507
c94cb314 508 switch (status) {
1da177e4
LT		 509 case 0: /* success */
510 break;
511 case -ECONNRESET: /* unlink */
512 case -ENOENT:
513 case -ESHUTDOWN:
514 return;
515 /* -EPIPE: should clear the halt */
516 default: /* error */
517 goto resubmit;
518 }
519
520 /* we check the link state to report changes */
521 if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) {
58125f95 522 if (act_state)
1da177e4
LT		 523 netif_carrier_on(kaweth->net);
524 else
525 netif_carrier_off(kaweth->net);
526
527 kaweth->linkstate = act_state;
528 }
529resubmit:
530 kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC);
531}
532
c4028958 533static void kaweth_resubmit_tl(struct work_struct *work)
1da177e4 534{
c4028958
DH		 535 struct kaweth_device *kaweth =
536 container_of(work, struct kaweth_device, lowmem_work.work);
1da177e4 537
1a2ea1df 538 if (IS_BLOCKED(kaweth->status))
1da177e4
LT		 539 return;
540
541 if (kaweth->suspend_lowmem_rx)
542 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
543
544 if (kaweth->suspend_lowmem_ctrl)
545 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
546}
547
548
549/****************************************************************
550 * kaweth_resubmit_rx_urb
551 ****************************************************************/
552static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth,
55016f10 553 gfp_t mem_flags)
1da177e4
LT		 554{
555 int result;
556
557 usb_fill_bulk_urb(kaweth->rx_urb,
558 kaweth->dev,
559 usb_rcvbulkpipe(kaweth->dev, 1),
560 kaweth->rx_buf,
561 KAWETH_BUF_SIZE,
562 kaweth_usb_receive,
563 kaweth);
564 kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
565 kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle;
566
567 if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) {
568 if (result == -ENOMEM) {
569 kaweth->suspend_lowmem_rx = 1;
570 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
571 }
db6b2219
GKH		 572 dev_err(&kaweth->intf->dev, "resubmitting rx_urb %d failed\n",
573 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 587{
49ae25b0 588 struct device *dev = &urb->dev->dev;
1da177e4
LT		 589 struct kaweth_device *kaweth = urb->context;
590 struct net_device *net = kaweth->net;
c94cb314 591 int status = urb->status;
1da177e4
LT		 592
593 int count = urb->actual_length;
594 int count2 = urb->transfer_buffer_length;
595
596 __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf);
597
598 struct sk_buff *skb;
599
710b523a
LF		 600 if (unlikely(status == -EPIPE)) {
601 kaweth->stats.rx_errors++;
1da177e4
LT		 602 kaweth->end = 1;
603 wake_up(&kaweth->term_wait);
49ae25b0 604 dev_dbg(dev, "Status was -EPIPE.\n");
1da177e4
LT		 605 return;
606 }
710b523a
LF		 607 if (unlikely(status == -ECONNRESET || status == -ESHUTDOWN)) {
608 /* we are killed - set a flag and wake the disconnect handler */
609 kaweth->end = 1;
610 wake_up(&kaweth->term_wait);
49ae25b0 611 dev_dbg(dev, "Status was -ECONNRESET or -ESHUTDOWN.\n");
710b523a
LF		 612 return;
613 }
614 if (unlikely(status == -EPROTO || status == -ETIME ||
615 status == -EILSEQ)) {
616 kaweth->stats.rx_errors++;
49ae25b0 617 dev_dbg(dev, "Status was -EPROTO, -ETIME, or -EILSEQ.\n");
710b523a
LF		 618 return;
619 }
620 if (unlikely(status == -EOVERFLOW)) {
621 kaweth->stats.rx_errors++;
49ae25b0 622 dev_dbg(dev, "Status was -EOVERFLOW.\n");
710b523a 623 }
1a2ea1df
ON		 624 spin_lock(&kaweth->device_lock);
625 if (IS_BLOCKED(kaweth->status)) {
626 spin_unlock(&kaweth->device_lock);
1da177e4 627 return;
1a2ea1df
ON		 628 }
629 spin_unlock(&kaweth->device_lock);
1da177e4 630
c94cb314 631 if(status && status != -EREMOTEIO && count != 1) {
db6b2219
GKH		 632 dev_err(&kaweth->intf->dev,
633 "%s RX status: %d count: %d packet_len: %d\n",
634 net->name, status, count, (int)pkt_len);
1da177e4
LT		 635 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
636 return;
637 }
638
639 if(kaweth->net && (count > 2)) {
640 if(pkt_len > (count - 2)) {
db6b2219
GKH		 641 dev_err(&kaweth->intf->dev,
642 "Packet length too long for USB frame (pkt_len: %x, count: %x)\n",
643 pkt_len, count);
644 dev_err(&kaweth->intf->dev, "Packet len & 2047: %x\n",
645 pkt_len & 2047);
646 dev_err(&kaweth->intf->dev, "Count 2: %x\n", count2);
1da177e4
LT		 647 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
648 return;
649 }
650
651 if(!(skb = dev_alloc_skb(pkt_len+2))) {
652 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
653 return;
654 }
655
656 skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
657
8c7b7faa 658 skb_copy_to_linear_data(skb, kaweth->rx_buf + 2, pkt_len);
1da177e4
LT		 659
660 skb_put(skb, pkt_len);
661
662 skb->protocol = eth_type_trans(skb, net);
663
664 netif_rx(skb);
665
666 kaweth->stats.rx_packets++;
667 kaweth->stats.rx_bytes += pkt_len;
668 }
669
670 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
671}
672
673/****************************************************************
674 * kaweth_open
675 ****************************************************************/
676static int kaweth_open(struct net_device *net)
677{
678 struct kaweth_device *kaweth = netdev_priv(net);
679 int res;
680
b98b98f9
ON		 681 res = usb_autopm_get_interface(kaweth->intf);
682 if (res) {
db6b2219 683 dev_err(&kaweth->intf->dev, "Interface cannot be resumed.\n");
b98b98f9
ON		 684 return -EIO;
685 }
1da177e4
LT		 686 res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL);
687 if (res)
b98b98f9 688 goto err_out;
1da177e4
LT		 689
690 usb_fill_int_urb(
691 kaweth->irq_urb,
692 kaweth->dev,
693 usb_rcvintpipe(kaweth->dev, 3),
694 kaweth->intbuffer,
695 INTBUFFERSIZE,
696 int_callback,
697 kaweth,
698 250); /* overriding the descriptor */
699 kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle;
700 kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
701
702 res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL);
703 if (res) {
704 usb_kill_urb(kaweth->rx_urb);
b98b98f9 705 goto err_out;
1da177e4 706 }
1a2ea1df 707 kaweth->opened = 1;
1da177e4
LT		 708
709 netif_start_queue(net);
710
711 kaweth_async_set_rx_mode(kaweth);
712 return 0;
b98b98f9
ON		 713
714err_out:
ceb0c77e 715 usb_autopm_put_interface(kaweth->intf);
b98b98f9 716 return -EIO;
1da177e4
LT		 717}
718
719/****************************************************************
b98b98f9 720 * kaweth_kill_urbs
1da177e4 721 ****************************************************************/
1a2ea1df 722static void kaweth_kill_urbs(struct kaweth_device *kaweth)
1da177e4 723{
1da177e4
LT		 724 usb_kill_urb(kaweth->irq_urb);
725 usb_kill_urb(kaweth->rx_urb);
d23b536b 726 usb_kill_urb(kaweth->tx_urb);
1da177e4 727
4bb073c0 728 cancel_delayed_work_sync(&kaweth->lowmem_work);
1da177e4
LT		 729
730 /* a scheduled work may have resubmitted,
731 we hit them again */
732 usb_kill_urb(kaweth->irq_urb);
733 usb_kill_urb(kaweth->rx_urb);
1a2ea1df
ON		 734}
735
736/****************************************************************
737 * kaweth_close
738 ****************************************************************/
739static int kaweth_close(struct net_device *net)
740{
741 struct kaweth_device *kaweth = netdev_priv(net);
742
743 netif_stop_queue(net);
744 kaweth->opened = 0;
745
746 kaweth->status |= KAWETH_STATUS_CLOSING;
747
748 kaweth_kill_urbs(kaweth);
1da177e4
LT		 749
750 kaweth->status &= ~KAWETH_STATUS_CLOSING;
751
ceb0c77e 752 usb_autopm_put_interface(kaweth->intf);
b98b98f9 753
1da177e4
LT		 754 return 0;
755}
756
b3ebd522
ON		 757static u32 kaweth_get_link(struct net_device *dev)
758{
759 struct kaweth_device *kaweth = netdev_priv(dev);
760
761 return kaweth->linkstate;
1da177e4
LT		 762}
763
0fc0b732 764static const struct ethtool_ops ops = {
b3ebd522 765 .get_link = kaweth_get_link
1da177e4
LT		 766};
767
768/****************************************************************
769 * kaweth_usb_transmit_complete
770 ****************************************************************/
7d12e780 771static void kaweth_usb_transmit_complete(struct urb *urb)
1da177e4
LT		 772{
773 struct kaweth_device *kaweth = urb->context;
774 struct sk_buff *skb = kaweth->tx_skb;
c94cb314 775 int status = urb->status;
1da177e4 776
c94cb314
ON		 777 if (unlikely(status != 0))
778 if (status != -ENOENT)
49ae25b0
GKH		 779 dev_dbg(&urb->dev->dev, "%s: TX status %d.\n",
780 kaweth->net->name, status);
1da177e4
LT		 781
782 netif_wake_queue(kaweth->net);
783 dev_kfree_skb_irq(skb);
784}
785
786/****************************************************************
787 * kaweth_start_xmit
788 ****************************************************************/
25a79c41
SH		 789static netdev_tx_t kaweth_start_xmit(struct sk_buff *skb,
790 struct net_device *net)
1da177e4
LT		 791{
792 struct kaweth_device *kaweth = netdev_priv(net);
793 __le16 *private_header;
794
795 int res;
796
4ff61c8f 797 spin_lock_irq(&kaweth->device_lock);
1da177e4 798
1da177e4
LT		 799 kaweth_async_set_rx_mode(kaweth);
800 netif_stop_queue(net);
1a2ea1df
ON		 801 if (IS_BLOCKED(kaweth->status)) {
802 goto skip;
803 }
1da177e4
LT		 804
805 /* We now decide whether we can put our special header into the sk_buff */
6db331eb
ED		 806 if (skb_cow_head(skb, 2)) {
807 kaweth->stats.tx_errors++;
808 netif_start_queue(net);
809 spin_unlock_irq(&kaweth->device_lock);
810 dev_kfree_skb_any(skb);
811 return NETDEV_TX_OK;
1da177e4
LT		 812 }
813
814 private_header = (__le16 *)__skb_push(skb, 2);
815 *private_header = cpu_to_le16(skb->len-2);
816 kaweth->tx_skb = skb;
817
818 usb_fill_bulk_urb(kaweth->tx_urb,
819 kaweth->dev,
820 usb_sndbulkpipe(kaweth->dev, 2),
821 private_header,
822 skb->len,
823 kaweth_usb_transmit_complete,
824 kaweth);
825 kaweth->end = 0;
1da177e4
LT		 826
827 if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC)))
828 {
4dc89948 829 dev_warn(&net->dev, "kaweth failed tx_urb %d\n", res);
1a2ea1df 830skip:
1da177e4
LT		 831 kaweth->stats.tx_errors++;
832
833 netif_start_queue(net);
834 dev_kfree_skb_irq(skb);
835 }
836 else
837 {
838 kaweth->stats.tx_packets++;
839 kaweth->stats.tx_bytes += skb->len;
1da177e4
LT		 840 }
841
4ff61c8f 842 spin_unlock_irq(&kaweth->device_lock);
1da177e4 843
6ed10654 844 return NETDEV_TX_OK;
1da177e4
LT		 845}
846
847/****************************************************************
848 * kaweth_set_rx_mode
849 ****************************************************************/
850static void kaweth_set_rx_mode(struct net_device *net)
851{
852 struct kaweth_device *kaweth = netdev_priv(net);
853
854 __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED |
855 KAWETH_PACKET_FILTER_BROADCAST |
856 KAWETH_PACKET_FILTER_MULTICAST;
857
49ae25b0 858 netdev_dbg(net, "Setting Rx mode to %d\n", packet_filter_bitmap);
1da177e4
LT		 859
860 netif_stop_queue(net);
861
862 if (net->flags & IFF_PROMISC) {
863 packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS;
864 }
4cd24eaf 865 else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1da177e4
LT		 866 packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST;
867 }
868
869 kaweth->packet_filter_bitmap = packet_filter_bitmap;
870 netif_wake_queue(net);
871}
872
873/****************************************************************
874 * kaweth_async_set_rx_mode
875 ****************************************************************/
876static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth)
877{
710b523a 878 int result;
1da177e4 879 __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap;
710b523a 880
1da177e4
LT		 881 kaweth->packet_filter_bitmap = 0;
882 if (packet_filter_bitmap == 0)
883 return;
884
710b523a
LF		 885 if (in_interrupt())
886 return;
887
1da177e4
LT		 888 result = kaweth_control(kaweth,
889 usb_sndctrlpipe(kaweth->dev, 0),
890 KAWETH_COMMAND_SET_PACKET_FILTER,
891 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
892 packet_filter_bitmap,
893 0,
894 (void *)&kaweth->scratch,
895 0,
896 KAWETH_CONTROL_TIMEOUT);
897
898 if(result < 0) {
db6b2219
GKH		 899 dev_err(&kaweth->intf->dev, "Failed to set Rx mode: %d\n",
900 result);
1da177e4
LT		 901 }
902 else {
49ae25b0
GKH		 903 netdev_dbg(kaweth->net, "Set Rx mode to %d\n",
904 packet_filter_bitmap);
1da177e4 905 }
1da177e4
LT		 906}
907
908/****************************************************************
909 * kaweth_netdev_stats
910 ****************************************************************/
911static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev)
912{
913 struct kaweth_device *kaweth = netdev_priv(dev);
914 return &kaweth->stats;
915}
916
917/****************************************************************
918 * kaweth_tx_timeout
919 ****************************************************************/
920static void kaweth_tx_timeout(struct net_device *net)
921{
922 struct kaweth_device *kaweth = netdev_priv(net);
923
4dc89948 924 dev_warn(&net->dev, "%s: Tx timed out. Resetting.\n", net->name);
1da177e4 925 kaweth->stats.tx_errors++;
860e9538 926 netif_trans_update(net);
1da177e4
LT		 927
928 usb_unlink_urb(kaweth->tx_urb);
929}
930
1a2ea1df
ON		 931/****************************************************************
932 * kaweth_suspend
933 ****************************************************************/
934static int kaweth_suspend(struct usb_interface *intf, pm_message_t message)
935{
936 struct kaweth_device *kaweth = usb_get_intfdata(intf);
937 unsigned long flags;
938
939 spin_lock_irqsave(&kaweth->device_lock, flags);
940 kaweth->status |= KAWETH_STATUS_SUSPENDING;
941 spin_unlock_irqrestore(&kaweth->device_lock, flags);
942
943 kaweth_kill_urbs(kaweth);
944 return 0;
945}
946
947/****************************************************************
948 * kaweth_resume
949 ****************************************************************/
950static int kaweth_resume(struct usb_interface *intf)
951{
952 struct kaweth_device *kaweth = usb_get_intfdata(intf);
953 unsigned long flags;
954
955 spin_lock_irqsave(&kaweth->device_lock, flags);
956 kaweth->status &= ~KAWETH_STATUS_SUSPENDING;
957 spin_unlock_irqrestore(&kaweth->device_lock, flags);
958
959 if (!kaweth->opened)
960 return 0;
961 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
962 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
963
964 return 0;
965}
966
1da177e4
LT		 967/****************************************************************
968 * kaweth_probe
969 ****************************************************************/
321ea8b2
ON		 970
971
972static const struct net_device_ops kaweth_netdev_ops = {
973 .ndo_open = kaweth_open,
974 .ndo_stop = kaweth_close,
975 .ndo_start_xmit = kaweth_start_xmit,
976 .ndo_tx_timeout = kaweth_tx_timeout,
afc4b13d 977 .ndo_set_rx_mode = kaweth_set_rx_mode,
321ea8b2 978 .ndo_get_stats = kaweth_netdev_stats,
635ecaa7 979 .ndo_change_mtu = eth_change_mtu,
240c102d
BH		 980 .ndo_set_mac_address = eth_mac_addr,
981 .ndo_validate_addr = eth_validate_addr,
321ea8b2
ON		 982};
983
1da177e4
LT		 984static int kaweth_probe(
985 struct usb_interface *intf,
986 const struct usb_device_id *id /* from id_table */
987 )
988{
49ae25b0
GKH		 989 struct device *dev = &intf->dev;
990 struct usb_device *udev = interface_to_usbdev(intf);
1da177e4
LT		 991 struct kaweth_device *kaweth;
992 struct net_device *netdev;
993 const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
994 int result = 0;
575ced7f 995 int rv = -EIO;
1da177e4 996
49ae25b0
GKH		 997 dev_dbg(dev,
998 "Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x\n",
999 udev->devnum, le16_to_cpu(udev->descriptor.idVendor),
1000 le16_to_cpu(udev->descriptor.idProduct),
1001 le16_to_cpu(udev->descriptor.bcdDevice));
1da177e4 1002
49ae25b0 1003 dev_dbg(dev, "Device at %p\n", udev);
1da177e4 1004
49ae25b0
GKH		 1005 dev_dbg(dev, "Descriptor length: %x type: %x\n",
1006 (int)udev->descriptor.bLength,
1007 (int)udev->descriptor.bDescriptorType);
1da177e4
LT		 1008
1009 netdev = alloc_etherdev(sizeof(*kaweth));
1010 if (!netdev)
1011 return -ENOMEM;
1012
1013 kaweth = netdev_priv(netdev);
49ae25b0 1014 kaweth->dev = udev;
1da177e4 1015 kaweth->net = netdev;
60bcabd0 1016 kaweth->intf = intf;
1da177e4
LT		 1017
1018 spin_lock_init(&kaweth->device_lock);
1019 init_waitqueue_head(&kaweth->term_wait);
1020
49ae25b0 1021 dev_dbg(dev, "Resetting.\n");
1da177e4
LT		 1022
1023 kaweth_reset(kaweth);
1024
1025 /*
1026 * If high byte of bcdDevice is nonzero, firmware is already
1027 * downloaded. Don't try to do it again, or we'll hang the device.
1028 */
1029
49ae25b0
GKH		 1030 if (le16_to_cpu(udev->descriptor.bcdDevice) >> 8) {
1031 dev_info(dev, "Firmware present in device.\n");
1da177e4
LT		 1032 } else {
1033 /* Download the firmware */
49ae25b0 1034 dev_info(dev, "Downloading firmware...\n");
1da177e4 1035 kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL);
575ced7f
ON		 1036 if (!kaweth->firmware_buf) {
1037 rv = -ENOMEM;
1038 goto err_free_netdev;
1039 }
1da177e4 1040 if ((result = kaweth_download_firmware(kaweth,
79682499 1041 "kaweth/new_code.bin",
1da177e4
LT		 1042 100,
1043 2)) < 0) {
49ae25b0 1044 dev_err(dev, "Error downloading firmware (%d)\n",
db6b2219 1045 result);
1da177e4
LT		 1046 goto err_fw;
1047 }
1048
1049 if ((result = kaweth_download_firmware(kaweth,
79682499 1050 "kaweth/new_code_fix.bin",
1da177e4
LT		 1051 100,
1052 3)) < 0) {
49ae25b0 1053 dev_err(dev, "Error downloading firmware fix (%d)\n",
db6b2219 1054 result);
1da177e4
LT		 1055 goto err_fw;
1056 }
1057
1058 if ((result = kaweth_download_firmware(kaweth,
79682499 1059 "kaweth/trigger_code.bin",
1da177e4
LT		 1060 126,
1061 2)) < 0) {
49ae25b0 1062 dev_err(dev, "Error downloading trigger code (%d)\n",
db6b2219 1063 result);
1da177e4
LT		 1064 goto err_fw;
1065
1066 }
1067
1068 if ((result = kaweth_download_firmware(kaweth,
79682499 1069 "kaweth/trigger_code_fix.bin",
1da177e4
LT		 1070 126,
1071 3)) < 0) {
49ae25b0 1072 dev_err(dev, "Error downloading trigger code fix (%d)\n", result);
1da177e4
LT		 1073 goto err_fw;
1074 }
1075
1076
1077 if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
49ae25b0 1078 dev_err(dev, "Error triggering firmware (%d)\n", result);
1da177e4
LT		 1079 goto err_fw;
1080 }
1081
1082 /* Device will now disappear for a moment... */
49ae25b0 1083 dev_info(dev, "Firmware loaded. I'll be back...\n");
1da177e4
LT		 1084err_fw:
1085 free_page((unsigned long)kaweth->firmware_buf);
1086 free_netdev(netdev);
1087 return -EIO;
1088 }
1089
1090 result = kaweth_read_configuration(kaweth);
1091
1092 if(result < 0) {
49ae25b0 1093 dev_err(dev, "Error reading configuration (%d), no net device created\n", result);
1da177e4
LT		 1094 goto err_free_netdev;
1095 }
1096
49ae25b0
GKH		 1097 dev_info(dev, "Statistics collection: %x\n", kaweth->configuration.statistics_mask);
1098 dev_info(dev, "Multicast filter limit: %x\n", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
1099 dev_info(dev, "MTU: %d\n", le16_to_cpu(kaweth->configuration.segment_size));
1100 dev_info(dev, "Read MAC address %pM\n", kaweth->configuration.hw_addr);
1da177e4
LT		 1101
1102 if(!memcmp(&kaweth->configuration.hw_addr,
1103 &bcast_addr,
1104 sizeof(bcast_addr))) {
49ae25b0 1105 dev_err(dev, "Firmware not functioning properly, no net device created\n");
1da177e4
LT		 1106 goto err_free_netdev;
1107 }
1108
1109 if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
49ae25b0 1110 dev_dbg(dev, "Error setting URB size\n");
1da177e4
LT		 1111 goto err_free_netdev;
1112 }
1113
1114 if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
49ae25b0 1115 dev_err(dev, "Error setting SOFS wait\n");
1da177e4
LT		 1116 goto err_free_netdev;
1117 }
1118
1119 result = kaweth_set_receive_filter(kaweth,
1120 KAWETH_PACKET_FILTER_DIRECTED |
1121 KAWETH_PACKET_FILTER_BROADCAST |
1122 KAWETH_PACKET_FILTER_MULTICAST);
1123
1124 if(result < 0) {
49ae25b0 1125 dev_err(dev, "Error setting receive filter\n");
1da177e4
LT		 1126 goto err_free_netdev;
1127 }
1128
49ae25b0 1129 dev_dbg(dev, "Initializing net device.\n");
1da177e4
LT		 1130
1131 kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1132 if (!kaweth->tx_urb)
1133 goto err_free_netdev;
1134 kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1135 if (!kaweth->rx_urb)
1136 goto err_only_tx;
1137 kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
1138 if (!kaweth->irq_urb)
1139 goto err_tx_and_rx;
1140
997ea58e 1141 kaweth->intbuffer = usb_alloc_coherent( kaweth->dev,
1da177e4
LT		 1142 INTBUFFERSIZE,
1143 GFP_KERNEL,
1144 &kaweth->intbufferhandle);
1145 if (!kaweth->intbuffer)
1146 goto err_tx_and_rx_and_irq;
997ea58e 1147 kaweth->rx_buf = usb_alloc_coherent( kaweth->dev,
1da177e4
LT		 1148 KAWETH_BUF_SIZE,
1149 GFP_KERNEL,
1150 &kaweth->rxbufferhandle);
1151 if (!kaweth->rx_buf)
1152 goto err_all_but_rxbuf;
1153
1154 memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr));
1155 memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr,
1156 sizeof(kaweth->configuration.hw_addr));
1157
321ea8b2 1158 netdev->netdev_ops = &kaweth_netdev_ops;
1da177e4 1159 netdev->watchdog_timeo = KAWETH_TX_TIMEOUT;
1da177e4 1160 netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size);
7ad24ea4 1161 netdev->ethtool_ops = &ops;
1da177e4
LT		 1162
1163 /* kaweth is zeroed as part of alloc_netdev */
c4028958 1164 INIT_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl);
1da177e4
LT		 1165 usb_set_intfdata(intf, kaweth);
1166
49ae25b0 1167 SET_NETDEV_DEV(netdev, dev);
1da177e4 1168 if (register_netdev(netdev) != 0) {
49ae25b0 1169 dev_err(dev, "Error registering netdev.\n");
1da177e4
LT		 1170 goto err_intfdata;
1171 }
1172
49ae25b0 1173 dev_info(dev, "kaweth interface created at %s\n",
880c9c66 1174 kaweth->net->name);
1da177e4 1175
1da177e4
LT		 1176 return 0;
1177
1178err_intfdata:
1179 usb_set_intfdata(intf, NULL);
997ea58e 1180 usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1da177e4 1181err_all_but_rxbuf:
997ea58e 1182 usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1da177e4
LT		 1183err_tx_and_rx_and_irq:
1184 usb_free_urb(kaweth->irq_urb);
1185err_tx_and_rx:
1186 usb_free_urb(kaweth->rx_urb);
1187err_only_tx:
1188 usb_free_urb(kaweth->tx_urb);
1189err_free_netdev:
1190 free_netdev(netdev);
1191
575ced7f 1192 return rv;
1da177e4
LT		 1193}
1194
1195/****************************************************************
1196 * kaweth_disconnect
1197 ****************************************************************/
1198static void kaweth_disconnect(struct usb_interface *intf)
1199{
1200 struct kaweth_device *kaweth = usb_get_intfdata(intf);
1201 struct net_device *netdev;
1202
1da177e4
LT		 1203 usb_set_intfdata(intf, NULL);
1204 if (!kaweth) {
25985edc 1205 dev_warn(&intf->dev, "unregistering non-existent device\n");
1da177e4
LT		 1206 return;
1207 }
1208 netdev = kaweth->net;
1da177e4 1209
49ae25b0 1210 netdev_dbg(kaweth->net, "Unregistering net device\n");
1da177e4
LT		 1211 unregister_netdev(netdev);
1212
1213 usb_free_urb(kaweth->rx_urb);
1214 usb_free_urb(kaweth->tx_urb);
1215 usb_free_urb(kaweth->irq_urb);
1216
997ea58e
DM		 1217 usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1218 usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1da177e4
LT		 1219
1220 free_netdev(netdev);
1221}
1222
1223
1224// FIXME this completion stuff is a modified clone of
1225// an OLD version of some stuff in usb.c ...
1226struct usb_api_data {
1227 wait_queue_head_t wqh;
1228 int done;
1229};
1230
1231/*-------------------------------------------------------------------*
1232 * completion handler for compatibility wrappers (sync control/bulk) *
1233 *-------------------------------------------------------------------*/
7d12e780 1234static void usb_api_blocking_completion(struct urb *urb)
1da177e4
LT		 1235{
1236 struct usb_api_data *awd = (struct usb_api_data *)urb->context;
1237
1238 awd->done=1;
1239 wake_up(&awd->wqh);
1240}
1241
1242/*-------------------------------------------------------------------*
1243 * COMPATIBILITY STUFF *
1244 *-------------------------------------------------------------------*/
1245
1246// Starts urb and waits for completion or timeout
1247static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length)
1248{
1249 struct usb_api_data awd;
1250 int status;
1251
1252 init_waitqueue_head(&awd.wqh);
1253 awd.done = 0;
1254
1255 urb->context = &awd;
49c9e7c2 1256 status = usb_submit_urb(urb, GFP_ATOMIC);
1da177e4
LT		 1257 if (status) {
1258 // something went wrong
1259 usb_free_urb(urb);
1260 return status;
1261 }
1262
1263 if (!wait_event_timeout(awd.wqh, awd.done, timeout)) {
1264 // timeout
4dc89948 1265 dev_warn(&urb->dev->dev, "usb_control/bulk_msg: timeout\n");
1da177e4
LT		 1266 usb_kill_urb(urb); // remove urb safely
1267 status = -ETIMEDOUT;
1268 }
1269 else {
1270 status = urb->status;
1271 }
1272
1273 if (actual_length) {
1274 *actual_length = urb->actual_length;
1275 }
1276
1277 usb_free_urb(urb);
1278 return status;
1279}
1280
1281/*-------------------------------------------------------------------*/
1282// returns status (negative) or length (positive)
1283static int kaweth_internal_control_msg(struct usb_device *usb_dev,
1284 unsigned int pipe,
1285 struct usb_ctrlrequest *cmd, void *data,
1286 int len, int timeout)
1287{
1288 struct urb *urb;
1289 int retv;
b98b98f9 1290 int length = 0; /* shut up GCC */
1da177e4 1291
e4c7f259 1292 urb = usb_alloc_urb(0, GFP_ATOMIC);
1da177e4
LT		 1293 if (!urb)
1294 return -ENOMEM;
1295
1296 usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data,
1297 len, usb_api_blocking_completion, NULL);
1298
1299 retv = usb_start_wait_urb(urb, timeout, &length);
1300 if (retv < 0) {
1301 return retv;
1302 }
1303 else {
1304 return length;
1305 }
1306}
1307
d632eb1b 1308module_usb_driver(kaweth_driver);
Arne's tree of linux kernel.