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kaweth: fix firmware download
[deliverable/linux.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
49ae25b0 268 netdev_dbg(kaweth->net, "kaweth_control()\n");
1da177e4
LT		 269
270 if(in_interrupt()) {
49ae25b0 271 netdev_dbg(kaweth->net, "in_interrupt()\n");
1da177e4
LT		 272 return -EBUSY;
273 }
274
275 dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
49ae25b0 276 if (!dr)
1da177e4 277 return -ENOMEM;
1da177e4 278
051b982b 279 dr->bRequestType = requesttype;
1da177e4 280 dr->bRequest = request;
da2bbdcc
HH		 281 dr->wValue = cpu_to_le16(value);
282 dr->wIndex = cpu_to_le16(index);
283 dr->wLength = cpu_to_le16(size);
1da177e4 284
051b982b
KC		 285 retval = kaweth_internal_control_msg(kaweth->dev,
286 pipe,
287 dr,
288 data,
289 size,
290 timeout);
291
292 kfree(dr);
293 return retval;
1da177e4
LT		 294}
295
296/****************************************************************
297 * kaweth_read_configuration
298 ****************************************************************/
299static int kaweth_read_configuration(struct kaweth_device *kaweth)
300{
301 int retval;
302
49ae25b0 303 netdev_dbg(kaweth->net, "Reading kaweth configuration\n");
1da177e4
LT		 304
305 retval = kaweth_control(kaweth,
306 usb_rcvctrlpipe(kaweth->dev, 0),
307 KAWETH_COMMAND_GET_ETHERNET_DESC,
308 USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
309 0,
310 0,
311 (void *)&kaweth->configuration,
312 sizeof(kaweth->configuration),
313 KAWETH_CONTROL_TIMEOUT);
314
315 return retval;
316}
317
318/****************************************************************
319 * kaweth_set_urb_size
320 ****************************************************************/
321static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size)
322{
323 int retval;
324
49ae25b0 325 netdev_dbg(kaweth->net, "Setting URB size to %d\n", (unsigned)urb_size);
1da177e4
LT		 326
327 retval = kaweth_control(kaweth,
328 usb_sndctrlpipe(kaweth->dev, 0),
329 KAWETH_COMMAND_SET_URB_SIZE,
330 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
331 urb_size,
332 0,
333 (void *)&kaweth->scratch,
334 0,
335 KAWETH_CONTROL_TIMEOUT);
336
337 return retval;
338}
339
340/****************************************************************
341 * kaweth_set_sofs_wait
342 ****************************************************************/
343static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait)
344{
345 int retval;
346
49ae25b0 347 netdev_dbg(kaweth->net, "Set SOFS wait to %d\n", (unsigned)sofs_wait);
1da177e4
LT		 348
349 retval = kaweth_control(kaweth,
350 usb_sndctrlpipe(kaweth->dev, 0),
351 KAWETH_COMMAND_SET_SOFS_WAIT,
352 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
353 sofs_wait,
354 0,
355 (void *)&kaweth->scratch,
356 0,
357 KAWETH_CONTROL_TIMEOUT);
358
359 return retval;
360}
361
362/****************************************************************
363 * kaweth_set_receive_filter
364 ****************************************************************/
365static int kaweth_set_receive_filter(struct kaweth_device *kaweth,
366 __u16 receive_filter)
367{
368 int retval;
369
49ae25b0
GKH		 370 netdev_dbg(kaweth->net, "Set receive filter to %d\n",
371 (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,
79682499 390 const char *fwname,
1da177e4
LT		 391 __u8 interrupt,
392 __u8 type)
393{
79682499
DW		 394 const struct firmware *fw;
395 int data_len;
396 int ret;
397
398 ret = request_firmware(&fw, fwname, &kaweth->dev->dev);
399 if (ret) {
db6b2219 400 dev_err(&kaweth->intf->dev, "Firmware request failed\n");
79682499
DW		 401 return ret;
402 }
403
404 if (fw->size > KAWETH_FIRMWARE_BUF_SIZE) {
db6b2219
GKH		 405 dev_err(&kaweth->intf->dev, "Firmware too big: %zu\n",
406 fw->size);
986e3f6e 407 release_firmware(fw);
1da177e4
LT		 408 return -ENOSPC;
409 }
79682499
DW		 410 data_len = fw->size;
411 memcpy(kaweth->firmware_buf, fw->data, fw->size);
1da177e4 412
79682499 413 release_firmware(fw);
1da177e4
LT		 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
49ae25b0 420 netdev_dbg(kaweth->net, "High: %i, Low:%i\n", kaweth->firmware_buf[3],
1da177e4
LT		 421 kaweth->firmware_buf[2]);
422
49ae25b0
GKH		 423 netdev_dbg(kaweth->net,
424 "Downloading firmware at %p to kaweth device at %p\n",
0abc1cee 425 kaweth->firmware_buf, kaweth);
49ae25b0 426 netdev_dbg(kaweth->net, "Firmware length: %d\n", data_len);
1da177e4
LT		 427
428 return kaweth_control(kaweth,
429 usb_sndctrlpipe(kaweth->dev, 0),
430 KAWETH_COMMAND_SCAN,
431 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
432 0,
433 0,
434 (void *)kaweth->firmware_buf,
435 data_len,
436 KAWETH_CONTROL_TIMEOUT);
437}
438
439/****************************************************************
440 * kaweth_trigger_firmware
441 ****************************************************************/
442static int kaweth_trigger_firmware(struct kaweth_device *kaweth,
443 __u8 interrupt)
444{
445 kaweth->firmware_buf[0] = 0xB6;
446 kaweth->firmware_buf[1] = 0xC3;
447 kaweth->firmware_buf[2] = 0x01;
448 kaweth->firmware_buf[3] = 0x00;
449 kaweth->firmware_buf[4] = 0x06;
450 kaweth->firmware_buf[5] = interrupt;
451 kaweth->firmware_buf[6] = 0x00;
452 kaweth->firmware_buf[7] = 0x00;
453
49ae25b0 454 netdev_dbg(kaweth->net, "Triggering firmware\n");
1da177e4
LT		 455
456 return kaweth_control(kaweth,
457 usb_sndctrlpipe(kaweth->dev, 0),
458 KAWETH_COMMAND_SCAN,
459 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
460 0,
461 0,
462 (void *)kaweth->firmware_buf,
463 8,
464 KAWETH_CONTROL_TIMEOUT);
465}
466
467/****************************************************************
468 * kaweth_reset
469 ****************************************************************/
470static int kaweth_reset(struct kaweth_device *kaweth)
471{
472 int result;
473
49ae25b0 474 netdev_dbg(kaweth->net, "kaweth_reset(%p)\n", kaweth);
f0816ce3 475 result = usb_reset_configuration(kaweth->dev);
f2d45cd9 476 mdelay(10);
1da177e4 477
49ae25b0 478 netdev_dbg(kaweth->net, "kaweth_reset() returns %d.\n", result);
1da177e4
LT		 479
480 return result;
481}
482
7d12e780 483static void kaweth_usb_receive(struct urb *);
55016f10 484static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t);
1da177e4
LT		 485
486/****************************************************************
487 int_callback
488*****************************************************************/
489
55016f10 490static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t mf)
1da177e4
LT		 491{
492 int status;
493
494 status = usb_submit_urb (kaweth->irq_urb, mf);
495 if (unlikely(status == -ENOMEM)) {
496 kaweth->suspend_lowmem_ctrl = 1;
497 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
498 } else {
499 kaweth->suspend_lowmem_ctrl = 0;
500 }
501
502 if (status)
db6b2219
GKH		 503 dev_err(&kaweth->intf->dev,
504 "can't resubmit intr, %s-%s, status %d\n",
505 kaweth->dev->bus->bus_name,
506 kaweth->dev->devpath, status);
1da177e4
LT		 507}
508
7d12e780 509static void int_callback(struct urb *u)
1da177e4
LT		 510{
511 struct kaweth_device *kaweth = u->context;
512 int act_state;
c94cb314 513 int status = u->status;
1da177e4 514
c94cb314 515 switch (status) {
1da177e4
LT		 516 case 0: /* success */
517 break;
518 case -ECONNRESET: /* unlink */
519 case -ENOENT:
520 case -ESHUTDOWN:
521 return;
522 /* -EPIPE: should clear the halt */
523 default: /* error */
524 goto resubmit;
525 }
526
527 /* we check the link state to report changes */
528 if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) {
58125f95 529 if (act_state)
1da177e4
LT		 530 netif_carrier_on(kaweth->net);
531 else
532 netif_carrier_off(kaweth->net);
533
534 kaweth->linkstate = act_state;
535 }
536resubmit:
537 kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC);
538}
539
c4028958 540static void kaweth_resubmit_tl(struct work_struct *work)
1da177e4 541{
c4028958
DH		 542 struct kaweth_device *kaweth =
543 container_of(work, struct kaweth_device, lowmem_work.work);
1da177e4 544
1a2ea1df 545 if (IS_BLOCKED(kaweth->status))
1da177e4
LT		 546 return;
547
548 if (kaweth->suspend_lowmem_rx)
549 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
550
551 if (kaweth->suspend_lowmem_ctrl)
552 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
553}
554
555
556/****************************************************************
557 * kaweth_resubmit_rx_urb
558 ****************************************************************/
559static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth,
55016f10 560 gfp_t mem_flags)
1da177e4
LT		 561{
562 int result;
563
564 usb_fill_bulk_urb(kaweth->rx_urb,
565 kaweth->dev,
566 usb_rcvbulkpipe(kaweth->dev, 1),
567 kaweth->rx_buf,
568 KAWETH_BUF_SIZE,
569 kaweth_usb_receive,
570 kaweth);
571 kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
572 kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle;
573
574 if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) {
575 if (result == -ENOMEM) {
576 kaweth->suspend_lowmem_rx = 1;
577 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
578 }
db6b2219
GKH		 579 dev_err(&kaweth->intf->dev, "resubmitting rx_urb %d failed\n",
580 result);
1da177e4
LT		 581 } else {
582 kaweth->suspend_lowmem_rx = 0;
583 }
584
585 return result;
586}
587
588static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth);
589
590/****************************************************************
591 * kaweth_usb_receive
592 ****************************************************************/
7d12e780 593static void kaweth_usb_receive(struct urb *urb)
1da177e4 594{
49ae25b0 595 struct device *dev = &urb->dev->dev;
1da177e4
LT		 596 struct kaweth_device *kaweth = urb->context;
597 struct net_device *net = kaweth->net;
c94cb314 598 int status = urb->status;
1da177e4
LT		 599
600 int count = urb->actual_length;
601 int count2 = urb->transfer_buffer_length;
602
603 __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf);
604
605 struct sk_buff *skb;
606
710b523a
LF		 607 if (unlikely(status == -EPIPE)) {
608 kaweth->stats.rx_errors++;
1da177e4
LT		 609 kaweth->end = 1;
610 wake_up(&kaweth->term_wait);
49ae25b0 611 dev_dbg(dev, "Status was -EPIPE.\n");
1da177e4
LT		 612 return;
613 }
710b523a
LF		 614 if (unlikely(status == -ECONNRESET || status == -ESHUTDOWN)) {
615 /* we are killed - set a flag and wake the disconnect handler */
616 kaweth->end = 1;
617 wake_up(&kaweth->term_wait);
49ae25b0 618 dev_dbg(dev, "Status was -ECONNRESET or -ESHUTDOWN.\n");
710b523a
LF		 619 return;
620 }
621 if (unlikely(status == -EPROTO || status == -ETIME ||
622 status == -EILSEQ)) {
623 kaweth->stats.rx_errors++;
49ae25b0 624 dev_dbg(dev, "Status was -EPROTO, -ETIME, or -EILSEQ.\n");
710b523a
LF		 625 return;
626 }
627 if (unlikely(status == -EOVERFLOW)) {
628 kaweth->stats.rx_errors++;
49ae25b0 629 dev_dbg(dev, "Status was -EOVERFLOW.\n");
710b523a 630 }
1a2ea1df
ON		 631 spin_lock(&kaweth->device_lock);
632 if (IS_BLOCKED(kaweth->status)) {
633 spin_unlock(&kaweth->device_lock);
1da177e4 634 return;
1a2ea1df
ON		 635 }
636 spin_unlock(&kaweth->device_lock);
1da177e4 637
c94cb314 638 if(status && status != -EREMOTEIO && count != 1) {
db6b2219
GKH		 639 dev_err(&kaweth->intf->dev,
640 "%s RX status: %d count: %d packet_len: %d\n",
641 net->name, status, count, (int)pkt_len);
1da177e4
LT		 642 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
643 return;
644 }
645
646 if(kaweth->net && (count > 2)) {
647 if(pkt_len > (count - 2)) {
db6b2219
GKH		 648 dev_err(&kaweth->intf->dev,
649 "Packet length too long for USB frame (pkt_len: %x, count: %x)\n",
650 pkt_len, count);
651 dev_err(&kaweth->intf->dev, "Packet len & 2047: %x\n",
652 pkt_len & 2047);
653 dev_err(&kaweth->intf->dev, "Count 2: %x\n", count2);
1da177e4
LT		 654 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
655 return;
656 }
657
658 if(!(skb = dev_alloc_skb(pkt_len+2))) {
659 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
660 return;
661 }
662
663 skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
664
8c7b7faa 665 skb_copy_to_linear_data(skb, kaweth->rx_buf + 2, pkt_len);
1da177e4
LT		 666
667 skb_put(skb, pkt_len);
668
669 skb->protocol = eth_type_trans(skb, net);
670
671 netif_rx(skb);
672
673 kaweth->stats.rx_packets++;
674 kaweth->stats.rx_bytes += pkt_len;
675 }
676
677 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
678}
679
680/****************************************************************
681 * kaweth_open
682 ****************************************************************/
683static int kaweth_open(struct net_device *net)
684{
685 struct kaweth_device *kaweth = netdev_priv(net);
686 int res;
687
49ae25b0 688 netdev_dbg(kaweth->net, "Opening network device.\n");
1da177e4 689
b98b98f9
ON		 690 res = usb_autopm_get_interface(kaweth->intf);
691 if (res) {
db6b2219 692 dev_err(&kaweth->intf->dev, "Interface cannot be resumed.\n");
b98b98f9
ON		 693 return -EIO;
694 }
1da177e4
LT		 695 res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL);
696 if (res)
b98b98f9 697 goto err_out;
1da177e4
LT		 698
699 usb_fill_int_urb(
700 kaweth->irq_urb,
701 kaweth->dev,
702 usb_rcvintpipe(kaweth->dev, 3),
703 kaweth->intbuffer,
704 INTBUFFERSIZE,
705 int_callback,
706 kaweth,
707 250); /* overriding the descriptor */
708 kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle;
709 kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
710
711 res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL);
712 if (res) {
713 usb_kill_urb(kaweth->rx_urb);
b98b98f9 714 goto err_out;
1da177e4 715 }
1a2ea1df 716 kaweth->opened = 1;
1da177e4
LT		 717
718 netif_start_queue(net);
719
720 kaweth_async_set_rx_mode(kaweth);
721 return 0;
b98b98f9
ON		 722
723err_out:
ceb0c77e 724 usb_autopm_put_interface(kaweth->intf);
b98b98f9 725 return -EIO;
1da177e4
LT		 726}
727
728/****************************************************************
b98b98f9 729 * kaweth_kill_urbs
1da177e4 730 ****************************************************************/
1a2ea1df 731static void kaweth_kill_urbs(struct kaweth_device *kaweth)
1da177e4 732{
1da177e4
LT		 733 usb_kill_urb(kaweth->irq_urb);
734 usb_kill_urb(kaweth->rx_urb);
d23b536b 735 usb_kill_urb(kaweth->tx_urb);
1da177e4 736
4bb073c0 737 cancel_delayed_work_sync(&kaweth->lowmem_work);
1da177e4
LT		 738
739 /* a scheduled work may have resubmitted,
740 we hit them again */
741 usb_kill_urb(kaweth->irq_urb);
742 usb_kill_urb(kaweth->rx_urb);
1a2ea1df
ON		 743}
744
745/****************************************************************
746 * kaweth_close
747 ****************************************************************/
748static int kaweth_close(struct net_device *net)
749{
750 struct kaweth_device *kaweth = netdev_priv(net);
751
752 netif_stop_queue(net);
753 kaweth->opened = 0;
754
755 kaweth->status |= KAWETH_STATUS_CLOSING;
756
757 kaweth_kill_urbs(kaweth);
1da177e4
LT		 758
759 kaweth->status &= ~KAWETH_STATUS_CLOSING;
760
ceb0c77e 761 usb_autopm_put_interface(kaweth->intf);
b98b98f9 762
1da177e4
LT		 763 return 0;
764}
765
b3ebd522
ON		 766static u32 kaweth_get_link(struct net_device *dev)
767{
768 struct kaweth_device *kaweth = netdev_priv(dev);
769
770 return kaweth->linkstate;
1da177e4
LT		 771}
772
0fc0b732 773static const struct ethtool_ops ops = {
b3ebd522 774 .get_link = kaweth_get_link
1da177e4
LT		 775};
776
777/****************************************************************
778 * kaweth_usb_transmit_complete
779 ****************************************************************/
7d12e780 780static void kaweth_usb_transmit_complete(struct urb *urb)
1da177e4
LT		 781{
782 struct kaweth_device *kaweth = urb->context;
783 struct sk_buff *skb = kaweth->tx_skb;
c94cb314 784 int status = urb->status;
1da177e4 785
c94cb314
ON		 786 if (unlikely(status != 0))
787 if (status != -ENOENT)
49ae25b0
GKH		 788 dev_dbg(&urb->dev->dev, "%s: TX status %d.\n",
789 kaweth->net->name, status);
1da177e4
LT		 790
791 netif_wake_queue(kaweth->net);
792 dev_kfree_skb_irq(skb);
793}
794
795/****************************************************************
796 * kaweth_start_xmit
797 ****************************************************************/
25a79c41
SH		 798static netdev_tx_t kaweth_start_xmit(struct sk_buff *skb,
799 struct net_device *net)
1da177e4
LT		 800{
801 struct kaweth_device *kaweth = netdev_priv(net);
802 __le16 *private_header;
803
804 int res;
805
4ff61c8f 806 spin_lock_irq(&kaweth->device_lock);
1da177e4 807
1da177e4
LT		 808 kaweth_async_set_rx_mode(kaweth);
809 netif_stop_queue(net);
1a2ea1df
ON		 810 if (IS_BLOCKED(kaweth->status)) {
811 goto skip;
812 }
1da177e4
LT		 813
814 /* We now decide whether we can put our special header into the sk_buff */
815 if (skb_cloned(skb) || skb_headroom(skb) < 2) {
816 /* no such luck - we make our own */
817 struct sk_buff *copied_skb;
818 copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC);
819 dev_kfree_skb_irq(skb);
820 skb = copied_skb;
821 if (!copied_skb) {
822 kaweth->stats.tx_errors++;
823 netif_start_queue(net);
4ff61c8f 824 spin_unlock_irq(&kaweth->device_lock);
6ed10654 825 return NETDEV_TX_OK;
1da177e4
LT		 826 }
827 }
828
829 private_header = (__le16 *)__skb_push(skb, 2);
830 *private_header = cpu_to_le16(skb->len-2);
831 kaweth->tx_skb = skb;
832
833 usb_fill_bulk_urb(kaweth->tx_urb,
834 kaweth->dev,
835 usb_sndbulkpipe(kaweth->dev, 2),
836 private_header,
837 skb->len,
838 kaweth_usb_transmit_complete,
839 kaweth);
840 kaweth->end = 0;
1da177e4
LT		 841
842 if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC)))
843 {
4dc89948 844 dev_warn(&net->dev, "kaweth failed tx_urb %d\n", res);
1a2ea1df 845skip:
1da177e4
LT		 846 kaweth->stats.tx_errors++;
847
848 netif_start_queue(net);
849 dev_kfree_skb_irq(skb);
850 }
851 else
852 {
853 kaweth->stats.tx_packets++;
854 kaweth->stats.tx_bytes += skb->len;
1da177e4
LT		 855 }
856
4ff61c8f 857 spin_unlock_irq(&kaweth->device_lock);
1da177e4 858
6ed10654 859 return NETDEV_TX_OK;
1da177e4
LT		 860}
861
862/****************************************************************
863 * kaweth_set_rx_mode
864 ****************************************************************/
865static void kaweth_set_rx_mode(struct net_device *net)
866{
867 struct kaweth_device *kaweth = netdev_priv(net);
868
869 __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED |
870 KAWETH_PACKET_FILTER_BROADCAST |
871 KAWETH_PACKET_FILTER_MULTICAST;
872
49ae25b0 873 netdev_dbg(net, "Setting Rx mode to %d\n", packet_filter_bitmap);
1da177e4
LT		 874
875 netif_stop_queue(net);
876
877 if (net->flags & IFF_PROMISC) {
878 packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS;
879 }
4cd24eaf 880 else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1da177e4
LT		 881 packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST;
882 }
883
884 kaweth->packet_filter_bitmap = packet_filter_bitmap;
885 netif_wake_queue(net);
886}
887
888/****************************************************************
889 * kaweth_async_set_rx_mode
890 ****************************************************************/
891static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth)
892{
710b523a 893 int result;
1da177e4 894 __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap;
710b523a 895
1da177e4
LT		 896 kaweth->packet_filter_bitmap = 0;
897 if (packet_filter_bitmap == 0)
898 return;
899
710b523a
LF		 900 if (in_interrupt())
901 return;
902
1da177e4
LT		 903 result = kaweth_control(kaweth,
904 usb_sndctrlpipe(kaweth->dev, 0),
905 KAWETH_COMMAND_SET_PACKET_FILTER,
906 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
907 packet_filter_bitmap,
908 0,
909 (void *)&kaweth->scratch,
910 0,
911 KAWETH_CONTROL_TIMEOUT);
912
913 if(result < 0) {
db6b2219
GKH		 914 dev_err(&kaweth->intf->dev, "Failed to set Rx mode: %d\n",
915 result);
1da177e4
LT		 916 }
917 else {
49ae25b0
GKH		 918 netdev_dbg(kaweth->net, "Set Rx mode to %d\n",
919 packet_filter_bitmap);
1da177e4 920 }
1da177e4
LT		 921}
922
923/****************************************************************
924 * kaweth_netdev_stats
925 ****************************************************************/
926static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev)
927{
928 struct kaweth_device *kaweth = netdev_priv(dev);
929 return &kaweth->stats;
930}
931
932/****************************************************************
933 * kaweth_tx_timeout
934 ****************************************************************/
935static void kaweth_tx_timeout(struct net_device *net)
936{
937 struct kaweth_device *kaweth = netdev_priv(net);
938
4dc89948 939 dev_warn(&net->dev, "%s: Tx timed out. Resetting.\n", net->name);
1da177e4 940 kaweth->stats.tx_errors++;
860e9538 941 netif_trans_update(net);
1da177e4
LT		 942
943 usb_unlink_urb(kaweth->tx_urb);
944}
945
1a2ea1df
ON		 946/****************************************************************
947 * kaweth_suspend
948 ****************************************************************/
949static int kaweth_suspend(struct usb_interface *intf, pm_message_t message)
950{
951 struct kaweth_device *kaweth = usb_get_intfdata(intf);
952 unsigned long flags;
953
49ae25b0 954 dev_dbg(&intf->dev, "Suspending device\n");
1a2ea1df
ON		 955 spin_lock_irqsave(&kaweth->device_lock, flags);
956 kaweth->status |= KAWETH_STATUS_SUSPENDING;
957 spin_unlock_irqrestore(&kaweth->device_lock, flags);
958
959 kaweth_kill_urbs(kaweth);
960 return 0;
961}
962
963/****************************************************************
964 * kaweth_resume
965 ****************************************************************/
966static int kaweth_resume(struct usb_interface *intf)
967{
968 struct kaweth_device *kaweth = usb_get_intfdata(intf);
969 unsigned long flags;
970
49ae25b0 971 dev_dbg(&intf->dev, "Resuming device\n");
1a2ea1df
ON		 972 spin_lock_irqsave(&kaweth->device_lock, flags);
973 kaweth->status &= ~KAWETH_STATUS_SUSPENDING;
974 spin_unlock_irqrestore(&kaweth->device_lock, flags);
975
976 if (!kaweth->opened)
977 return 0;
978 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
979 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
980
981 return 0;
982}
983
1da177e4
LT		 984/****************************************************************
985 * kaweth_probe
986 ****************************************************************/
321ea8b2
ON		 987
988
989static const struct net_device_ops kaweth_netdev_ops = {
990 .ndo_open = kaweth_open,
991 .ndo_stop = kaweth_close,
992 .ndo_start_xmit = kaweth_start_xmit,
993 .ndo_tx_timeout = kaweth_tx_timeout,
afc4b13d 994 .ndo_set_rx_mode = kaweth_set_rx_mode,
321ea8b2 995 .ndo_get_stats = kaweth_netdev_stats,
635ecaa7 996 .ndo_change_mtu = eth_change_mtu,
240c102d
BH		 997 .ndo_set_mac_address = eth_mac_addr,
998 .ndo_validate_addr = eth_validate_addr,
321ea8b2
ON		 999};
1000
1da177e4
LT		 1001static int kaweth_probe(
1002 struct usb_interface *intf,
1003 const struct usb_device_id *id /* from id_table */
1004 )
1005{
49ae25b0
GKH		 1006 struct device *dev = &intf->dev;
1007 struct usb_device *udev = interface_to_usbdev(intf);
1da177e4
LT		 1008 struct kaweth_device *kaweth;
1009 struct net_device *netdev;
1010 const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
1011 int result = 0;
1012
49ae25b0
GKH		 1013 dev_dbg(dev,
1014 "Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x\n",
1015 udev->devnum, le16_to_cpu(udev->descriptor.idVendor),
1016 le16_to_cpu(udev->descriptor.idProduct),
1017 le16_to_cpu(udev->descriptor.bcdDevice));
1da177e4 1018
49ae25b0 1019 dev_dbg(dev, "Device at %p\n", udev);
1da177e4 1020
49ae25b0
GKH		 1021 dev_dbg(dev, "Descriptor length: %x type: %x\n",
1022 (int)udev->descriptor.bLength,
1023 (int)udev->descriptor.bDescriptorType);
1da177e4
LT		 1024
1025 netdev = alloc_etherdev(sizeof(*kaweth));
1026 if (!netdev)
1027 return -ENOMEM;
1028
1029 kaweth = netdev_priv(netdev);
49ae25b0 1030 kaweth->dev = udev;
1da177e4 1031 kaweth->net = netdev;
60bcabd0 1032 kaweth->intf = intf;
1da177e4
LT		 1033
1034 spin_lock_init(&kaweth->device_lock);
1035 init_waitqueue_head(&kaweth->term_wait);
1036
49ae25b0 1037 dev_dbg(dev, "Resetting.\n");
1da177e4
LT		 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
49ae25b0
GKH		 1046 if (le16_to_cpu(udev->descriptor.bcdDevice) >> 8) {
1047 dev_info(dev, "Firmware present in device.\n");
1da177e4
LT		 1048 } else {
1049 /* Download the firmware */
49ae25b0 1050 dev_info(dev, "Downloading firmware...\n");
1da177e4
LT		 1051 kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL);
1052 if ((result = kaweth_download_firmware(kaweth,
79682499 1053 "kaweth/new_code.bin",
1da177e4
LT		 1054 100,
1055 2)) < 0) {
49ae25b0 1056 dev_err(dev, "Error downloading firmware (%d)\n",
db6b2219 1057 result);
1da177e4
LT		 1058 goto err_fw;
1059 }
1060
1061 if ((result = kaweth_download_firmware(kaweth,
79682499 1062 "kaweth/new_code_fix.bin",
1da177e4
LT		 1063 100,
1064 3)) < 0) {
49ae25b0 1065 dev_err(dev, "Error downloading firmware fix (%d)\n",
db6b2219 1066 result);
1da177e4
LT		 1067 goto err_fw;
1068 }
1069
1070 if ((result = kaweth_download_firmware(kaweth,
79682499 1071 "kaweth/trigger_code.bin",
1da177e4
LT		 1072 126,
1073 2)) < 0) {
49ae25b0 1074 dev_err(dev, "Error downloading trigger code (%d)\n",
db6b2219 1075 result);
1da177e4
LT		 1076 goto err_fw;
1077
1078 }
1079
1080 if ((result = kaweth_download_firmware(kaweth,
79682499 1081 "kaweth/trigger_code_fix.bin",
1da177e4
LT		 1082 126,
1083 3)) < 0) {
49ae25b0 1084 dev_err(dev, "Error downloading trigger code fix (%d)\n", result);
1da177e4
LT		 1085 goto err_fw;
1086 }
1087
1088
1089 if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
49ae25b0 1090 dev_err(dev, "Error triggering firmware (%d)\n", result);
1da177e4
LT		 1091 goto err_fw;
1092 }
1093
1094 /* Device will now disappear for a moment... */
49ae25b0 1095 dev_info(dev, "Firmware loaded. I'll be back...\n");
1da177e4
LT		 1096err_fw:
1097 free_page((unsigned long)kaweth->firmware_buf);
1098 free_netdev(netdev);
1099 return -EIO;
1100 }
1101
1102 result = kaweth_read_configuration(kaweth);
1103
1104 if(result < 0) {
49ae25b0 1105 dev_err(dev, "Error reading configuration (%d), no net device created\n", result);
1da177e4
LT		 1106 goto err_free_netdev;
1107 }
1108
49ae25b0
GKH		 1109 dev_info(dev, "Statistics collection: %x\n", kaweth->configuration.statistics_mask);
1110 dev_info(dev, "Multicast filter limit: %x\n", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
1111 dev_info(dev, "MTU: %d\n", le16_to_cpu(kaweth->configuration.segment_size));
1112 dev_info(dev, "Read MAC address %pM\n", kaweth->configuration.hw_addr);
1da177e4
LT		 1113
1114 if(!memcmp(&kaweth->configuration.hw_addr,
1115 &bcast_addr,
1116 sizeof(bcast_addr))) {
49ae25b0 1117 dev_err(dev, "Firmware not functioning properly, no net device created\n");
1da177e4
LT		 1118 goto err_free_netdev;
1119 }
1120
1121 if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
49ae25b0 1122 dev_dbg(dev, "Error setting URB size\n");
1da177e4
LT		 1123 goto err_free_netdev;
1124 }
1125
1126 if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
49ae25b0 1127 dev_err(dev, "Error setting SOFS wait\n");
1da177e4
LT		 1128 goto err_free_netdev;
1129 }
1130
1131 result = kaweth_set_receive_filter(kaweth,
1132 KAWETH_PACKET_FILTER_DIRECTED |
1133 KAWETH_PACKET_FILTER_BROADCAST |
1134 KAWETH_PACKET_FILTER_MULTICAST);
1135
1136 if(result < 0) {
49ae25b0 1137 dev_err(dev, "Error setting receive filter\n");
1da177e4
LT		 1138 goto err_free_netdev;
1139 }
1140
49ae25b0 1141 dev_dbg(dev, "Initializing net device.\n");
1da177e4
LT		 1142
1143 kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1144 if (!kaweth->tx_urb)
1145 goto err_free_netdev;
1146 kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1147 if (!kaweth->rx_urb)
1148 goto err_only_tx;
1149 kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
1150 if (!kaweth->irq_urb)
1151 goto err_tx_and_rx;
1152
997ea58e 1153 kaweth->intbuffer = usb_alloc_coherent( kaweth->dev,
1da177e4
LT		 1154 INTBUFFERSIZE,
1155 GFP_KERNEL,
1156 &kaweth->intbufferhandle);
1157 if (!kaweth->intbuffer)
1158 goto err_tx_and_rx_and_irq;
997ea58e 1159 kaweth->rx_buf = usb_alloc_coherent( kaweth->dev,
1da177e4
LT		 1160 KAWETH_BUF_SIZE,
1161 GFP_KERNEL,
1162 &kaweth->rxbufferhandle);
1163 if (!kaweth->rx_buf)
1164 goto err_all_but_rxbuf;
1165
1166 memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr));
1167 memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr,
1168 sizeof(kaweth->configuration.hw_addr));
1169
321ea8b2 1170 netdev->netdev_ops = &kaweth_netdev_ops;
1da177e4 1171 netdev->watchdog_timeo = KAWETH_TX_TIMEOUT;
1da177e4 1172 netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size);
7ad24ea4 1173 netdev->ethtool_ops = &ops;
1da177e4
LT		 1174
1175 /* kaweth is zeroed as part of alloc_netdev */
c4028958 1176 INIT_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl);
1da177e4
LT		 1177 usb_set_intfdata(intf, kaweth);
1178
49ae25b0 1179 SET_NETDEV_DEV(netdev, dev);
1da177e4 1180 if (register_netdev(netdev) != 0) {
49ae25b0 1181 dev_err(dev, "Error registering netdev.\n");
1da177e4
LT		 1182 goto err_intfdata;
1183 }
1184
49ae25b0 1185 dev_info(dev, "kaweth interface created at %s\n",
880c9c66 1186 kaweth->net->name);
1da177e4 1187
49ae25b0 1188 dev_dbg(dev, "Kaweth probe returning.\n");
1da177e4
LT		 1189
1190 return 0;
1191
1192err_intfdata:
1193 usb_set_intfdata(intf, NULL);
997ea58e 1194 usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1da177e4 1195err_all_but_rxbuf:
997ea58e 1196 usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1da177e4
LT		 1197err_tx_and_rx_and_irq:
1198 usb_free_urb(kaweth->irq_urb);
1199err_tx_and_rx:
1200 usb_free_urb(kaweth->rx_urb);
1201err_only_tx:
1202 usb_free_urb(kaweth->tx_urb);
1203err_free_netdev:
1204 free_netdev(netdev);
1205
1206 return -EIO;
1207}
1208
1209/****************************************************************
1210 * kaweth_disconnect
1211 ****************************************************************/
1212static void kaweth_disconnect(struct usb_interface *intf)
1213{
1214 struct kaweth_device *kaweth = usb_get_intfdata(intf);
1215 struct net_device *netdev;
1216
880c9c66 1217 dev_info(&intf->dev, "Unregistering\n");
1da177e4
LT		 1218
1219 usb_set_intfdata(intf, NULL);
1220 if (!kaweth) {
25985edc 1221 dev_warn(&intf->dev, "unregistering non-existent device\n");
1da177e4
LT		 1222 return;
1223 }
1224 netdev = kaweth->net;
1da177e4 1225
49ae25b0 1226 netdev_dbg(kaweth->net, "Unregistering net device\n");
1da177e4
LT		 1227 unregister_netdev(netdev);
1228
1229 usb_free_urb(kaweth->rx_urb);
1230 usb_free_urb(kaweth->tx_urb);
1231 usb_free_urb(kaweth->irq_urb);
1232
997ea58e
DM		 1233 usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1234 usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1da177e4
LT		 1235
1236 free_netdev(netdev);
1237}
1238
1239
1240// FIXME this completion stuff is a modified clone of
1241// an OLD version of some stuff in usb.c ...
1242struct usb_api_data {
1243 wait_queue_head_t wqh;
1244 int done;
1245};
1246
1247/*-------------------------------------------------------------------*
1248 * completion handler for compatibility wrappers (sync control/bulk) *
1249 *-------------------------------------------------------------------*/
7d12e780 1250static void usb_api_blocking_completion(struct urb *urb)
1da177e4
LT		 1251{
1252 struct usb_api_data *awd = (struct usb_api_data *)urb->context;
1253
1254 awd->done=1;
1255 wake_up(&awd->wqh);
1256}
1257
1258/*-------------------------------------------------------------------*
1259 * COMPATIBILITY STUFF *
1260 *-------------------------------------------------------------------*/
1261
1262// Starts urb and waits for completion or timeout
1263static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length)
1264{
1265 struct usb_api_data awd;
1266 int status;
1267
1268 init_waitqueue_head(&awd.wqh);
1269 awd.done = 0;
1270
1271 urb->context = &awd;
49c9e7c2 1272 status = usb_submit_urb(urb, GFP_ATOMIC);
1da177e4
LT		 1273 if (status) {
1274 // something went wrong
1275 usb_free_urb(urb);
1276 return status;
1277 }
1278
1279 if (!wait_event_timeout(awd.wqh, awd.done, timeout)) {
1280 // timeout
4dc89948 1281 dev_warn(&urb->dev->dev, "usb_control/bulk_msg: timeout\n");
1da177e4
LT		 1282 usb_kill_urb(urb); // remove urb safely
1283 status = -ETIMEDOUT;
1284 }
1285 else {
1286 status = urb->status;
1287 }
1288
1289 if (actual_length) {
1290 *actual_length = urb->actual_length;
1291 }
1292
1293 usb_free_urb(urb);
1294 return status;
1295}
1296
1297/*-------------------------------------------------------------------*/
1298// returns status (negative) or length (positive)
1299static int kaweth_internal_control_msg(struct usb_device *usb_dev,
1300 unsigned int pipe,
1301 struct usb_ctrlrequest *cmd, void *data,
1302 int len, int timeout)
1303{
1304 struct urb *urb;
1305 int retv;
b98b98f9 1306 int length = 0; /* shut up GCC */
1da177e4 1307
e4c7f259 1308 urb = usb_alloc_urb(0, GFP_ATOMIC);
1da177e4
LT		 1309 if (!urb)
1310 return -ENOMEM;
1311
1312 usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data,
1313 len, usb_api_blocking_completion, NULL);
1314
1315 retv = usb_start_wait_urb(urb, timeout, &length);
1316 if (retv < 0) {
1317 return retv;
1318 }
1319 else {
1320 return length;
1321 }
1322}
1323
d632eb1b 1324module_usb_driver(kaweth_driver);
Linux kernel - Deliverables
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