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Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6
[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
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:
1da177e4
LT		 34 * Develop test procedures for USB net interfaces
35 * Run test procedures
36 * Fix bugs from previous two steps
37 * Snoop other OSs for any tricks we're not doing
1da177e4
LT		 38 * Reduce arbitrary timeouts
39 * Smart multicast support
40 * Temporary MAC change support
41 * Tunable SOFs parameter - ioctl()?
42 * Ethernet stats collection
43 * Code formatting improvements
44 */
45
46#include <linux/module.h>
1da177e4
LT		 47#include <linux/slab.h>
48#include <linux/string.h>
49#include <linux/init.h>
50#include <linux/delay.h>
51#include <linux/netdevice.h>
52#include <linux/etherdevice.h>
53#include <linux/usb.h>
54#include <linux/types.h>
55#include <linux/ethtool.h>
1da177e4
LT		 56#include <linux/dma-mapping.h>
57#include <linux/wait.h>
79682499 58#include <linux/firmware.h>
1da177e4 59#include <asm/uaccess.h>
1da177e4
LT		 60#include <asm/byteorder.h>
61
62#undef DEBUG
63
1da177e4
LT		 64#define KAWETH_MTU 1514
65#define KAWETH_BUF_SIZE 1664
66#define KAWETH_TX_TIMEOUT (5 * HZ)
67#define KAWETH_SCRATCH_SIZE 32
68#define KAWETH_FIRMWARE_BUF_SIZE 4096
2b2b2e35 69#define KAWETH_CONTROL_TIMEOUT (30000)
1da177e4
LT		 70
71#define KAWETH_STATUS_BROKEN 0x0000001
72#define KAWETH_STATUS_CLOSING 0x0000002
1a2ea1df
ON		 73#define KAWETH_STATUS_SUSPENDING 0x0000004
74
75#define KAWETH_STATUS_BLOCKED (KAWETH_STATUS_CLOSING | KAWETH_STATUS_SUSPENDING)
1da177e4
LT		 76
77#define KAWETH_PACKET_FILTER_PROMISCUOUS 0x01
78#define KAWETH_PACKET_FILTER_ALL_MULTICAST 0x02
79#define KAWETH_PACKET_FILTER_DIRECTED 0x04
80#define KAWETH_PACKET_FILTER_BROADCAST 0x08
81#define KAWETH_PACKET_FILTER_MULTICAST 0x10
82
83/* Table 7 */
84#define KAWETH_COMMAND_GET_ETHERNET_DESC 0x00
85#define KAWETH_COMMAND_MULTICAST_FILTERS 0x01
86#define KAWETH_COMMAND_SET_PACKET_FILTER 0x02
87#define KAWETH_COMMAND_STATISTICS 0x03
88#define KAWETH_COMMAND_SET_TEMP_MAC 0x06
89#define KAWETH_COMMAND_GET_TEMP_MAC 0x07
90#define KAWETH_COMMAND_SET_URB_SIZE 0x08
91#define KAWETH_COMMAND_SET_SOFS_WAIT 0x09
92#define KAWETH_COMMAND_SCAN 0xFF
93
94#define KAWETH_SOFS_TO_WAIT 0x05
95
96#define INTBUFFERSIZE 4
97
98#define STATE_OFFSET 0
99#define STATE_MASK 0x40
100#define STATE_SHIFT 5
101
1a2ea1df
ON		 102#define IS_BLOCKED(s) (s & KAWETH_STATUS_BLOCKED)
103
1da177e4
LT		 104
105MODULE_AUTHOR("Michael Zappe <zapman@interlan.net>, Stephane Alnet <stephane@u-picardie.fr>, Brad Hards <bhards@bigpond.net.au> and Oliver Neukum <oliver@neukum.org>");
106MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver");
107MODULE_LICENSE("GPL");
79682499
DW		 108MODULE_FIRMWARE("kaweth/new_code.bin");
109MODULE_FIRMWARE("kaweth/new_code_fix.bin");
110MODULE_FIRMWARE("kaweth/trigger_code.bin");
111MODULE_FIRMWARE("kaweth/trigger_code_fix.bin");
1da177e4
LT		 112
113static const char driver_name[] = "kaweth";
114
115static int kaweth_probe(
116 struct usb_interface *intf,
117 const struct usb_device_id *id /* from id_table */
118 );
119static void kaweth_disconnect(struct usb_interface *intf);
120static int kaweth_internal_control_msg(struct usb_device *usb_dev,
121 unsigned int pipe,
122 struct usb_ctrlrequest *cmd, void *data,
123 int len, int timeout);
1a2ea1df
ON		 124static int kaweth_suspend(struct usb_interface *intf, pm_message_t message);
125static int kaweth_resume(struct usb_interface *intf);
1da177e4
LT		 126
127/****************************************************************
128 * usb_device_id
129 ****************************************************************/
130static struct usb_device_id usb_klsi_table[] = {
131 { USB_DEVICE(0x03e8, 0x0008) }, /* AOX Endpoints USB Ethernet */
132 { USB_DEVICE(0x04bb, 0x0901) }, /* I-O DATA USB-ET/T */
133 { USB_DEVICE(0x0506, 0x03e8) }, /* 3Com 3C19250 */
134 { USB_DEVICE(0x0506, 0x11f8) }, /* 3Com 3C460 */
135 { USB_DEVICE(0x0557, 0x2002) }, /* ATEN USB Ethernet */
136 { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */
137 { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */
138 { USB_DEVICE(0x0565, 0x0003) }, /* Optus@Home UEP1045A */
139 { USB_DEVICE(0x0565, 0x0005) }, /* Peracom Enet2 */
140 { USB_DEVICE(0x05e9, 0x0008) }, /* KLSI KL5KUSB101B */
141 { USB_DEVICE(0x05e9, 0x0009) }, /* KLSI KL5KUSB101B (Board change) */
142 { USB_DEVICE(0x066b, 0x2202) }, /* Linksys USB10T */
143 { USB_DEVICE(0x06e1, 0x0008) }, /* ADS USB-10BT */
144 { USB_DEVICE(0x06e1, 0x0009) }, /* ADS USB-10BT */
145 { USB_DEVICE(0x0707, 0x0100) }, /* SMC 2202USB */
146 { USB_DEVICE(0x07aa, 0x0001) }, /* Correga K.K. */
147 { USB_DEVICE(0x07b8, 0x4000) }, /* D-Link DU-E10 */
dacf4fc8 148 { USB_DEVICE(0x07c9, 0xb010) }, /* Allied Telesyn AT-USB10 USB Ethernet Adapter */
1da177e4
LT		 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,
e1f12eb6 182 .disable_hub_initiated_lpm = 1,
1da177e4
LT		 183};
184
185typedef __u8 eth_addr_t[6];
186
187/****************************************************************
188 * usb_eth_dev
189 ****************************************************************/
190struct usb_eth_dev {
191 char *name;
192 __u16 vendor;
193 __u16 device;
194 void *pdata;
195};
196
197/****************************************************************
198 * kaweth_ethernet_configuration
199 * Refer Table 8
200 ****************************************************************/
201struct kaweth_ethernet_configuration
202{
203 __u8 size;
204 __u8 reserved1;
205 __u8 reserved2;
206 eth_addr_t hw_addr;
207 __u32 statistics_mask;
208 __le16 segment_size;
209 __u16 max_multicast_filters;
210 __u8 reserved3;
ba2d3587 211} __packed;
1da177e4
LT		 212
213/****************************************************************
214 * kaweth_device
215 ****************************************************************/
216struct kaweth_device
217{
218 spinlock_t device_lock;
219
220 __u32 status;
221 int end;
1da177e4
LT		 222 int suspend_lowmem_rx;
223 int suspend_lowmem_ctrl;
224 int linkstate;
1a2ea1df 225 int opened;
c4028958 226 struct delayed_work lowmem_work;
1da177e4
LT		 227
228 struct usb_device *dev;
b98b98f9 229 struct usb_interface *intf;
1da177e4
LT		 230 struct net_device *net;
231 wait_queue_head_t term_wait;
232
233 struct urb *rx_urb;
234 struct urb *tx_urb;
235 struct urb *irq_urb;
236
237 dma_addr_t intbufferhandle;
238 __u8 *intbuffer;
239 dma_addr_t rxbufferhandle;
240 __u8 *rx_buf;
241
242
243 struct sk_buff *tx_skb;
244
245 __u8 *firmware_buf;
246 __u8 scratch[KAWETH_SCRATCH_SIZE];
247 __u16 packet_filter_bitmap;
248
249 struct kaweth_ethernet_configuration configuration;
250
251 struct net_device_stats stats;
252};
253
1da177e4
LT		 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;
051b982b 268 int retval;
1da177e4 269
49ae25b0 270 netdev_dbg(kaweth->net, "kaweth_control()\n");
1da177e4
LT		 271
272 if(in_interrupt()) {
49ae25b0 273 netdev_dbg(kaweth->net, "in_interrupt()\n");
1da177e4
LT		 274 return -EBUSY;
275 }
276
277 dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
49ae25b0 278 if (!dr)
1da177e4 279 return -ENOMEM;
1da177e4 280
051b982b 281 dr->bRequestType = requesttype;
1da177e4 282 dr->bRequest = request;
da2bbdcc
HH		 283 dr->wValue = cpu_to_le16(value);
284 dr->wIndex = cpu_to_le16(index);
285 dr->wLength = cpu_to_le16(size);
1da177e4 286
051b982b
KC		 287 retval = kaweth_internal_control_msg(kaweth->dev,
288 pipe,
289 dr,
290 data,
291 size,
292 timeout);
293
294 kfree(dr);
295 return retval;
1da177e4
LT		 296}
297
298/****************************************************************
299 * kaweth_read_configuration
300 ****************************************************************/
301static int kaweth_read_configuration(struct kaweth_device *kaweth)
302{
303 int retval;
304
49ae25b0 305 netdev_dbg(kaweth->net, "Reading kaweth configuration\n");
1da177e4
LT		 306
307 retval = kaweth_control(kaweth,
308 usb_rcvctrlpipe(kaweth->dev, 0),
309 KAWETH_COMMAND_GET_ETHERNET_DESC,
310 USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
311 0,
312 0,
313 (void *)&kaweth->configuration,
314 sizeof(kaweth->configuration),
315 KAWETH_CONTROL_TIMEOUT);
316
317 return retval;
318}
319
320/****************************************************************
321 * kaweth_set_urb_size
322 ****************************************************************/
323static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size)
324{
325 int retval;
326
49ae25b0 327 netdev_dbg(kaweth->net, "Setting URB size to %d\n", (unsigned)urb_size);
1da177e4
LT		 328
329 retval = kaweth_control(kaweth,
330 usb_sndctrlpipe(kaweth->dev, 0),
331 KAWETH_COMMAND_SET_URB_SIZE,
332 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
333 urb_size,
334 0,
335 (void *)&kaweth->scratch,
336 0,
337 KAWETH_CONTROL_TIMEOUT);
338
339 return retval;
340}
341
342/****************************************************************
343 * kaweth_set_sofs_wait
344 ****************************************************************/
345static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait)
346{
347 int retval;
348
49ae25b0 349 netdev_dbg(kaweth->net, "Set SOFS wait to %d\n", (unsigned)sofs_wait);
1da177e4
LT		 350
351 retval = kaweth_control(kaweth,
352 usb_sndctrlpipe(kaweth->dev, 0),
353 KAWETH_COMMAND_SET_SOFS_WAIT,
354 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
355 sofs_wait,
356 0,
357 (void *)&kaweth->scratch,
358 0,
359 KAWETH_CONTROL_TIMEOUT);
360
361 return retval;
362}
363
364/****************************************************************
365 * kaweth_set_receive_filter
366 ****************************************************************/
367static int kaweth_set_receive_filter(struct kaweth_device *kaweth,
368 __u16 receive_filter)
369{
370 int retval;
371
49ae25b0
GKH		 372 netdev_dbg(kaweth->net, "Set receive filter to %d\n",
373 (unsigned)receive_filter);
1da177e4
LT		 374
375 retval = kaweth_control(kaweth,
376 usb_sndctrlpipe(kaweth->dev, 0),
377 KAWETH_COMMAND_SET_PACKET_FILTER,
378 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
379 receive_filter,
380 0,
381 (void *)&kaweth->scratch,
382 0,
383 KAWETH_CONTROL_TIMEOUT);
384
385 return retval;
386}
387
388/****************************************************************
389 * kaweth_download_firmware
390 ****************************************************************/
391static int kaweth_download_firmware(struct kaweth_device *kaweth,
79682499 392 const char *fwname,
1da177e4
LT		 393 __u8 interrupt,
394 __u8 type)
395{
79682499
DW		 396 const struct firmware *fw;
397 int data_len;
398 int ret;
399
400 ret = request_firmware(&fw, fwname, &kaweth->dev->dev);
401 if (ret) {
db6b2219 402 dev_err(&kaweth->intf->dev, "Firmware request failed\n");
79682499
DW		 403 return ret;
404 }
405
406 if (fw->size > KAWETH_FIRMWARE_BUF_SIZE) {
db6b2219
GKH		 407 dev_err(&kaweth->intf->dev, "Firmware too big: %zu\n",
408 fw->size);
986e3f6e 409 release_firmware(fw);
1da177e4
LT		 410 return -ENOSPC;
411 }
79682499
DW		 412 data_len = fw->size;
413 memcpy(kaweth->firmware_buf, fw->data, fw->size);
1da177e4 414
79682499 415 release_firmware(fw);
1da177e4
LT		 416
417 kaweth->firmware_buf[2] = (data_len & 0xFF) - 7;
418 kaweth->firmware_buf[3] = data_len >> 8;
419 kaweth->firmware_buf[4] = type;
420 kaweth->firmware_buf[5] = interrupt;
421
49ae25b0 422 netdev_dbg(kaweth->net, "High: %i, Low:%i\n", kaweth->firmware_buf[3],
1da177e4
LT		 423 kaweth->firmware_buf[2]);
424
49ae25b0
GKH		 425 netdev_dbg(kaweth->net,
426 "Downloading firmware at %p to kaweth device at %p\n",
0abc1cee 427 kaweth->firmware_buf, kaweth);
49ae25b0 428 netdev_dbg(kaweth->net, "Firmware length: %d\n", data_len);
1da177e4
LT		 429
430 return kaweth_control(kaweth,
431 usb_sndctrlpipe(kaweth->dev, 0),
432 KAWETH_COMMAND_SCAN,
433 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
434 0,
435 0,
436 (void *)kaweth->firmware_buf,
437 data_len,
438 KAWETH_CONTROL_TIMEOUT);
439}
440
441/****************************************************************
442 * kaweth_trigger_firmware
443 ****************************************************************/
444static int kaweth_trigger_firmware(struct kaweth_device *kaweth,
445 __u8 interrupt)
446{
447 kaweth->firmware_buf[0] = 0xB6;
448 kaweth->firmware_buf[1] = 0xC3;
449 kaweth->firmware_buf[2] = 0x01;
450 kaweth->firmware_buf[3] = 0x00;
451 kaweth->firmware_buf[4] = 0x06;
452 kaweth->firmware_buf[5] = interrupt;
453 kaweth->firmware_buf[6] = 0x00;
454 kaweth->firmware_buf[7] = 0x00;
455
49ae25b0 456 netdev_dbg(kaweth->net, "Triggering firmware\n");
1da177e4
LT		 457
458 return kaweth_control(kaweth,
459 usb_sndctrlpipe(kaweth->dev, 0),
460 KAWETH_COMMAND_SCAN,
461 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
462 0,
463 0,
464 (void *)kaweth->firmware_buf,
465 8,
466 KAWETH_CONTROL_TIMEOUT);
467}
468
469/****************************************************************
470 * kaweth_reset
471 ****************************************************************/
472static int kaweth_reset(struct kaweth_device *kaweth)
473{
474 int result;
475
49ae25b0 476 netdev_dbg(kaweth->net, "kaweth_reset(%p)\n", kaweth);
f0816ce3 477 result = usb_reset_configuration(kaweth->dev);
f2d45cd9 478 mdelay(10);
1da177e4 479
49ae25b0 480 netdev_dbg(kaweth->net, "kaweth_reset() returns %d.\n", result);
1da177e4
LT		 481
482 return result;
483}
484
7d12e780 485static void kaweth_usb_receive(struct urb *);
55016f10 486static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t);
1da177e4
LT		 487
488/****************************************************************
489 int_callback
490*****************************************************************/
491
55016f10 492static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t mf)
1da177e4
LT		 493{
494 int status;
495
496 status = usb_submit_urb (kaweth->irq_urb, mf);
497 if (unlikely(status == -ENOMEM)) {
498 kaweth->suspend_lowmem_ctrl = 1;
499 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
500 } else {
501 kaweth->suspend_lowmem_ctrl = 0;
502 }
503
504 if (status)
db6b2219
GKH		 505 dev_err(&kaweth->intf->dev,
506 "can't resubmit intr, %s-%s, status %d\n",
507 kaweth->dev->bus->bus_name,
508 kaweth->dev->devpath, status);
1da177e4
LT		 509}
510
7d12e780 511static void int_callback(struct urb *u)
1da177e4
LT		 512{
513 struct kaweth_device *kaweth = u->context;
514 int act_state;
c94cb314 515 int status = u->status;
1da177e4 516
c94cb314 517 switch (status) {
1da177e4
LT		 518 case 0: /* success */
519 break;
520 case -ECONNRESET: /* unlink */
521 case -ENOENT:
522 case -ESHUTDOWN:
523 return;
524 /* -EPIPE: should clear the halt */
525 default: /* error */
526 goto resubmit;
527 }
528
529 /* we check the link state to report changes */
530 if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) {
58125f95 531 if (act_state)
1da177e4
LT		 532 netif_carrier_on(kaweth->net);
533 else
534 netif_carrier_off(kaweth->net);
535
536 kaweth->linkstate = act_state;
537 }
538resubmit:
539 kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC);
540}
541
c4028958 542static void kaweth_resubmit_tl(struct work_struct *work)
1da177e4 543{
c4028958
DH		 544 struct kaweth_device *kaweth =
545 container_of(work, struct kaweth_device, lowmem_work.work);
1da177e4 546
1a2ea1df 547 if (IS_BLOCKED(kaweth->status))
1da177e4
LT		 548 return;
549
550 if (kaweth->suspend_lowmem_rx)
551 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
552
553 if (kaweth->suspend_lowmem_ctrl)
554 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
555}
556
557
558/****************************************************************
559 * kaweth_resubmit_rx_urb
560 ****************************************************************/
561static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth,
55016f10 562 gfp_t mem_flags)
1da177e4
LT		 563{
564 int result;
565
566 usb_fill_bulk_urb(kaweth->rx_urb,
567 kaweth->dev,
568 usb_rcvbulkpipe(kaweth->dev, 1),
569 kaweth->rx_buf,
570 KAWETH_BUF_SIZE,
571 kaweth_usb_receive,
572 kaweth);
573 kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
574 kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle;
575
576 if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) {
577 if (result == -ENOMEM) {
578 kaweth->suspend_lowmem_rx = 1;
579 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
580 }
db6b2219
GKH		 581 dev_err(&kaweth->intf->dev, "resubmitting rx_urb %d failed\n",
582 result);
1da177e4
LT		 583 } else {
584 kaweth->suspend_lowmem_rx = 0;
585 }
586
587 return result;
588}
589
590static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth);
591
592/****************************************************************
593 * kaweth_usb_receive
594 ****************************************************************/
7d12e780 595static void kaweth_usb_receive(struct urb *urb)
1da177e4 596{
49ae25b0 597 struct device *dev = &urb->dev->dev;
1da177e4
LT		 598 struct kaweth_device *kaweth = urb->context;
599 struct net_device *net = kaweth->net;
c94cb314 600 int status = urb->status;
1da177e4
LT		 601
602 int count = urb->actual_length;
603 int count2 = urb->transfer_buffer_length;
604
605 __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf);
606
607 struct sk_buff *skb;
608
710b523a
LF		 609 if (unlikely(status == -EPIPE)) {
610 kaweth->stats.rx_errors++;
1da177e4
LT		 611 kaweth->end = 1;
612 wake_up(&kaweth->term_wait);
49ae25b0 613 dev_dbg(dev, "Status was -EPIPE.\n");
1da177e4
LT		 614 return;
615 }
710b523a
LF		 616 if (unlikely(status == -ECONNRESET || status == -ESHUTDOWN)) {
617 /* we are killed - set a flag and wake the disconnect handler */
618 kaweth->end = 1;
619 wake_up(&kaweth->term_wait);
49ae25b0 620 dev_dbg(dev, "Status was -ECONNRESET or -ESHUTDOWN.\n");
710b523a
LF		 621 return;
622 }
623 if (unlikely(status == -EPROTO || status == -ETIME ||
624 status == -EILSEQ)) {
625 kaweth->stats.rx_errors++;
49ae25b0 626 dev_dbg(dev, "Status was -EPROTO, -ETIME, or -EILSEQ.\n");
710b523a
LF		 627 return;
628 }
629 if (unlikely(status == -EOVERFLOW)) {
630 kaweth->stats.rx_errors++;
49ae25b0 631 dev_dbg(dev, "Status was -EOVERFLOW.\n");
710b523a 632 }
1a2ea1df
ON		 633 spin_lock(&kaweth->device_lock);
634 if (IS_BLOCKED(kaweth->status)) {
635 spin_unlock(&kaweth->device_lock);
1da177e4 636 return;
1a2ea1df
ON		 637 }
638 spin_unlock(&kaweth->device_lock);
1da177e4 639
c94cb314 640 if(status && status != -EREMOTEIO && count != 1) {
db6b2219
GKH		 641 dev_err(&kaweth->intf->dev,
642 "%s RX status: %d count: %d packet_len: %d\n",
643 net->name, status, count, (int)pkt_len);
1da177e4
LT		 644 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
645 return;
646 }
647
648 if(kaweth->net && (count > 2)) {
649 if(pkt_len > (count - 2)) {
db6b2219
GKH		 650 dev_err(&kaweth->intf->dev,
651 "Packet length too long for USB frame (pkt_len: %x, count: %x)\n",
652 pkt_len, count);
653 dev_err(&kaweth->intf->dev, "Packet len & 2047: %x\n",
654 pkt_len & 2047);
655 dev_err(&kaweth->intf->dev, "Count 2: %x\n", count2);
1da177e4
LT		 656 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
657 return;
658 }
659
660 if(!(skb = dev_alloc_skb(pkt_len+2))) {
661 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
662 return;
663 }
664
665 skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
666
8c7b7faa 667 skb_copy_to_linear_data(skb, kaweth->rx_buf + 2, pkt_len);
1da177e4
LT		 668
669 skb_put(skb, pkt_len);
670
671 skb->protocol = eth_type_trans(skb, net);
672
673 netif_rx(skb);
674
675 kaweth->stats.rx_packets++;
676 kaweth->stats.rx_bytes += pkt_len;
677 }
678
679 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
680}
681
682/****************************************************************
683 * kaweth_open
684 ****************************************************************/
685static int kaweth_open(struct net_device *net)
686{
687 struct kaweth_device *kaweth = netdev_priv(net);
688 int res;
689
49ae25b0 690 netdev_dbg(kaweth->net, "Opening network device.\n");
1da177e4 691
b98b98f9
ON		 692 res = usb_autopm_get_interface(kaweth->intf);
693 if (res) {
db6b2219 694 dev_err(&kaweth->intf->dev, "Interface cannot be resumed.\n");
b98b98f9
ON		 695 return -EIO;
696 }
1da177e4
LT		 697 res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL);
698 if (res)
b98b98f9 699 goto err_out;
1da177e4
LT		 700
701 usb_fill_int_urb(
702 kaweth->irq_urb,
703 kaweth->dev,
704 usb_rcvintpipe(kaweth->dev, 3),
705 kaweth->intbuffer,
706 INTBUFFERSIZE,
707 int_callback,
708 kaweth,
709 250); /* overriding the descriptor */
710 kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle;
711 kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
712
713 res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL);
714 if (res) {
715 usb_kill_urb(kaweth->rx_urb);
b98b98f9 716 goto err_out;
1da177e4 717 }
1a2ea1df 718 kaweth->opened = 1;
1da177e4
LT		 719
720 netif_start_queue(net);
721
722 kaweth_async_set_rx_mode(kaweth);
723 return 0;
b98b98f9
ON		 724
725err_out:
ceb0c77e 726 usb_autopm_put_interface(kaweth->intf);
b98b98f9 727 return -EIO;
1da177e4
LT		 728}
729
730/****************************************************************
b98b98f9 731 * kaweth_kill_urbs
1da177e4 732 ****************************************************************/
1a2ea1df 733static void kaweth_kill_urbs(struct kaweth_device *kaweth)
1da177e4 734{
1da177e4
LT		 735 usb_kill_urb(kaweth->irq_urb);
736 usb_kill_urb(kaweth->rx_urb);
d23b536b 737 usb_kill_urb(kaweth->tx_urb);
1da177e4 738
4bb073c0 739 cancel_delayed_work_sync(&kaweth->lowmem_work);
1da177e4
LT		 740
741 /* a scheduled work may have resubmitted,
742 we hit them again */
743 usb_kill_urb(kaweth->irq_urb);
744 usb_kill_urb(kaweth->rx_urb);
1a2ea1df
ON		 745}
746
747/****************************************************************
748 * kaweth_close
749 ****************************************************************/
750static int kaweth_close(struct net_device *net)
751{
752 struct kaweth_device *kaweth = netdev_priv(net);
753
754 netif_stop_queue(net);
755 kaweth->opened = 0;
756
757 kaweth->status |= KAWETH_STATUS_CLOSING;
758
759 kaweth_kill_urbs(kaweth);
1da177e4
LT		 760
761 kaweth->status &= ~KAWETH_STATUS_CLOSING;
762
ceb0c77e 763 usb_autopm_put_interface(kaweth->intf);
b98b98f9 764
1da177e4
LT		 765 return 0;
766}
767
b3ebd522
ON		 768static u32 kaweth_get_link(struct net_device *dev)
769{
770 struct kaweth_device *kaweth = netdev_priv(dev);
771
772 return kaweth->linkstate;
1da177e4
LT		 773}
774
0fc0b732 775static const struct ethtool_ops ops = {
b3ebd522 776 .get_link = kaweth_get_link
1da177e4
LT		 777};
778
779/****************************************************************
780 * kaweth_usb_transmit_complete
781 ****************************************************************/
7d12e780 782static void kaweth_usb_transmit_complete(struct urb *urb)
1da177e4
LT		 783{
784 struct kaweth_device *kaweth = urb->context;
785 struct sk_buff *skb = kaweth->tx_skb;
c94cb314 786 int status = urb->status;
1da177e4 787
c94cb314
ON		 788 if (unlikely(status != 0))
789 if (status != -ENOENT)
49ae25b0
GKH		 790 dev_dbg(&urb->dev->dev, "%s: TX status %d.\n",
791 kaweth->net->name, status);
1da177e4
LT		 792
793 netif_wake_queue(kaweth->net);
794 dev_kfree_skb_irq(skb);
795}
796
797/****************************************************************
798 * kaweth_start_xmit
799 ****************************************************************/
25a79c41
SH		 800static netdev_tx_t kaweth_start_xmit(struct sk_buff *skb,
801 struct net_device *net)
1da177e4
LT		 802{
803 struct kaweth_device *kaweth = netdev_priv(net);
804 __le16 *private_header;
805
806 int res;
807
4ff61c8f 808 spin_lock_irq(&kaweth->device_lock);
1da177e4 809
1da177e4
LT		 810 kaweth_async_set_rx_mode(kaweth);
811 netif_stop_queue(net);
1a2ea1df
ON		 812 if (IS_BLOCKED(kaweth->status)) {
813 goto skip;
814 }
1da177e4
LT		 815
816 /* We now decide whether we can put our special header into the sk_buff */
817 if (skb_cloned(skb) || skb_headroom(skb) < 2) {
818 /* no such luck - we make our own */
819 struct sk_buff *copied_skb;
820 copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC);
821 dev_kfree_skb_irq(skb);
822 skb = copied_skb;
823 if (!copied_skb) {
824 kaweth->stats.tx_errors++;
825 netif_start_queue(net);
4ff61c8f 826 spin_unlock_irq(&kaweth->device_lock);
6ed10654 827 return NETDEV_TX_OK;
1da177e4
LT		 828 }
829 }
830
831 private_header = (__le16 *)__skb_push(skb, 2);
832 *private_header = cpu_to_le16(skb->len-2);
833 kaweth->tx_skb = skb;
834
835 usb_fill_bulk_urb(kaweth->tx_urb,
836 kaweth->dev,
837 usb_sndbulkpipe(kaweth->dev, 2),
838 private_header,
839 skb->len,
840 kaweth_usb_transmit_complete,
841 kaweth);
842 kaweth->end = 0;
1da177e4
LT		 843
844 if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC)))
845 {
4dc89948 846 dev_warn(&net->dev, "kaweth failed tx_urb %d\n", res);
1a2ea1df 847skip:
1da177e4
LT		 848 kaweth->stats.tx_errors++;
849
850 netif_start_queue(net);
851 dev_kfree_skb_irq(skb);
852 }
853 else
854 {
855 kaweth->stats.tx_packets++;
856 kaweth->stats.tx_bytes += skb->len;
1da177e4
LT		 857 }
858
4ff61c8f 859 spin_unlock_irq(&kaweth->device_lock);
1da177e4 860
6ed10654 861 return NETDEV_TX_OK;
1da177e4
LT		 862}
863
864/****************************************************************
865 * kaweth_set_rx_mode
866 ****************************************************************/
867static void kaweth_set_rx_mode(struct net_device *net)
868{
869 struct kaweth_device *kaweth = netdev_priv(net);
870
871 __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED |
872 KAWETH_PACKET_FILTER_BROADCAST |
873 KAWETH_PACKET_FILTER_MULTICAST;
874
49ae25b0 875 netdev_dbg(net, "Setting Rx mode to %d\n", packet_filter_bitmap);
1da177e4
LT		 876
877 netif_stop_queue(net);
878
879 if (net->flags & IFF_PROMISC) {
880 packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS;
881 }
4cd24eaf 882 else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1da177e4
LT		 883 packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST;
884 }
885
886 kaweth->packet_filter_bitmap = packet_filter_bitmap;
887 netif_wake_queue(net);
888}
889
890/****************************************************************
891 * kaweth_async_set_rx_mode
892 ****************************************************************/
893static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth)
894{
710b523a 895 int result;
1da177e4 896 __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap;
710b523a 897
1da177e4
LT		 898 kaweth->packet_filter_bitmap = 0;
899 if (packet_filter_bitmap == 0)
900 return;
901
710b523a
LF		 902 if (in_interrupt())
903 return;
904
1da177e4
LT		 905 result = kaweth_control(kaweth,
906 usb_sndctrlpipe(kaweth->dev, 0),
907 KAWETH_COMMAND_SET_PACKET_FILTER,
908 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
909 packet_filter_bitmap,
910 0,
911 (void *)&kaweth->scratch,
912 0,
913 KAWETH_CONTROL_TIMEOUT);
914
915 if(result < 0) {
db6b2219
GKH		 916 dev_err(&kaweth->intf->dev, "Failed to set Rx mode: %d\n",
917 result);
1da177e4
LT		 918 }
919 else {
49ae25b0
GKH		 920 netdev_dbg(kaweth->net, "Set Rx mode to %d\n",
921 packet_filter_bitmap);
1da177e4 922 }
1da177e4
LT		 923}
924
925/****************************************************************
926 * kaweth_netdev_stats
927 ****************************************************************/
928static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev)
929{
930 struct kaweth_device *kaweth = netdev_priv(dev);
931 return &kaweth->stats;
932}
933
934/****************************************************************
935 * kaweth_tx_timeout
936 ****************************************************************/
937static void kaweth_tx_timeout(struct net_device *net)
938{
939 struct kaweth_device *kaweth = netdev_priv(net);
940
4dc89948 941 dev_warn(&net->dev, "%s: Tx timed out. Resetting.\n", net->name);
1da177e4
LT		 942 kaweth->stats.tx_errors++;
943 net->trans_start = jiffies;
944
945 usb_unlink_urb(kaweth->tx_urb);
946}
947
1a2ea1df
ON		 948/****************************************************************
949 * kaweth_suspend
950 ****************************************************************/
951static int kaweth_suspend(struct usb_interface *intf, pm_message_t message)
952{
953 struct kaweth_device *kaweth = usb_get_intfdata(intf);
954 unsigned long flags;
955
49ae25b0 956 dev_dbg(&intf->dev, "Suspending device\n");
1a2ea1df
ON		 957 spin_lock_irqsave(&kaweth->device_lock, flags);
958 kaweth->status |= KAWETH_STATUS_SUSPENDING;
959 spin_unlock_irqrestore(&kaweth->device_lock, flags);
960
961 kaweth_kill_urbs(kaweth);
962 return 0;
963}
964
965/****************************************************************
966 * kaweth_resume
967 ****************************************************************/
968static int kaweth_resume(struct usb_interface *intf)
969{
970 struct kaweth_device *kaweth = usb_get_intfdata(intf);
971 unsigned long flags;
972
49ae25b0 973 dev_dbg(&intf->dev, "Resuming device\n");
1a2ea1df
ON		 974 spin_lock_irqsave(&kaweth->device_lock, flags);
975 kaweth->status &= ~KAWETH_STATUS_SUSPENDING;
976 spin_unlock_irqrestore(&kaweth->device_lock, flags);
977
978 if (!kaweth->opened)
979 return 0;
980 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
981 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
982
983 return 0;
984}
985
1da177e4
LT		 986/****************************************************************
987 * kaweth_probe
988 ****************************************************************/
321ea8b2
ON		 989
990
991static const struct net_device_ops kaweth_netdev_ops = {
992 .ndo_open = kaweth_open,
993 .ndo_stop = kaweth_close,
994 .ndo_start_xmit = kaweth_start_xmit,
995 .ndo_tx_timeout = kaweth_tx_timeout,
afc4b13d 996 .ndo_set_rx_mode = kaweth_set_rx_mode,
321ea8b2 997 .ndo_get_stats = kaweth_netdev_stats,
635ecaa7 998 .ndo_change_mtu = eth_change_mtu,
240c102d
BH		 999 .ndo_set_mac_address = eth_mac_addr,
1000 .ndo_validate_addr = eth_validate_addr,
321ea8b2
ON		 1001};
1002
1da177e4
LT		 1003static int kaweth_probe(
1004 struct usb_interface *intf,
1005 const struct usb_device_id *id /* from id_table */
1006 )
1007{
49ae25b0
GKH		 1008 struct device *dev = &intf->dev;
1009 struct usb_device *udev = interface_to_usbdev(intf);
1da177e4
LT		 1010 struct kaweth_device *kaweth;
1011 struct net_device *netdev;
1012 const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
1013 int result = 0;
1014
49ae25b0
GKH		 1015 dev_dbg(dev,
1016 "Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x\n",
1017 udev->devnum, le16_to_cpu(udev->descriptor.idVendor),
1018 le16_to_cpu(udev->descriptor.idProduct),
1019 le16_to_cpu(udev->descriptor.bcdDevice));
1da177e4 1020
49ae25b0 1021 dev_dbg(dev, "Device at %p\n", udev);
1da177e4 1022
49ae25b0
GKH		 1023 dev_dbg(dev, "Descriptor length: %x type: %x\n",
1024 (int)udev->descriptor.bLength,
1025 (int)udev->descriptor.bDescriptorType);
1da177e4
LT		 1026
1027 netdev = alloc_etherdev(sizeof(*kaweth));
1028 if (!netdev)
1029 return -ENOMEM;
1030
1031 kaweth = netdev_priv(netdev);
49ae25b0 1032 kaweth->dev = udev;
1da177e4
LT		 1033 kaweth->net = netdev;
1034
1035 spin_lock_init(&kaweth->device_lock);
1036 init_waitqueue_head(&kaweth->term_wait);
1037
49ae25b0 1038 dev_dbg(dev, "Resetting.\n");
1da177e4
LT		 1039
1040 kaweth_reset(kaweth);
1041
1042 /*
1043 * If high byte of bcdDevice is nonzero, firmware is already
1044 * downloaded. Don't try to do it again, or we'll hang the device.
1045 */
1046
49ae25b0
GKH		 1047 if (le16_to_cpu(udev->descriptor.bcdDevice) >> 8) {
1048 dev_info(dev, "Firmware present in device.\n");
1da177e4
LT		 1049 } else {
1050 /* Download the firmware */
49ae25b0 1051 dev_info(dev, "Downloading firmware...\n");
1da177e4
LT		 1052 kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL);
1053 if ((result = kaweth_download_firmware(kaweth,
79682499 1054 "kaweth/new_code.bin",
1da177e4
LT		 1055 100,
1056 2)) < 0) {
49ae25b0 1057 dev_err(dev, "Error downloading firmware (%d)\n",
db6b2219 1058 result);
1da177e4
LT		 1059 goto err_fw;
1060 }
1061
1062 if ((result = kaweth_download_firmware(kaweth,
79682499 1063 "kaweth/new_code_fix.bin",
1da177e4
LT		 1064 100,
1065 3)) < 0) {
49ae25b0 1066 dev_err(dev, "Error downloading firmware fix (%d)\n",
db6b2219 1067 result);
1da177e4
LT		 1068 goto err_fw;
1069 }
1070
1071 if ((result = kaweth_download_firmware(kaweth,
79682499 1072 "kaweth/trigger_code.bin",
1da177e4
LT		 1073 126,
1074 2)) < 0) {
49ae25b0 1075 dev_err(dev, "Error downloading trigger code (%d)\n",
db6b2219 1076 result);
1da177e4
LT		 1077 goto err_fw;
1078
1079 }
1080
1081 if ((result = kaweth_download_firmware(kaweth,
79682499 1082 "kaweth/trigger_code_fix.bin",
1da177e4
LT		 1083 126,
1084 3)) < 0) {
49ae25b0 1085 dev_err(dev, "Error downloading trigger code fix (%d)\n", result);
1da177e4
LT		 1086 goto err_fw;
1087 }
1088
1089
1090 if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
49ae25b0 1091 dev_err(dev, "Error triggering firmware (%d)\n", result);
1da177e4
LT		 1092 goto err_fw;
1093 }
1094
1095 /* Device will now disappear for a moment... */
49ae25b0 1096 dev_info(dev, "Firmware loaded. I'll be back...\n");
1da177e4
LT		 1097err_fw:
1098 free_page((unsigned long)kaweth->firmware_buf);
1099 free_netdev(netdev);
1100 return -EIO;
1101 }
1102
1103 result = kaweth_read_configuration(kaweth);
1104
1105 if(result < 0) {
49ae25b0 1106 dev_err(dev, "Error reading configuration (%d), no net device created\n", result);
1da177e4
LT		 1107 goto err_free_netdev;
1108 }
1109
49ae25b0
GKH		 1110 dev_info(dev, "Statistics collection: %x\n", kaweth->configuration.statistics_mask);
1111 dev_info(dev, "Multicast filter limit: %x\n", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
1112 dev_info(dev, "MTU: %d\n", le16_to_cpu(kaweth->configuration.segment_size));
1113 dev_info(dev, "Read MAC address %pM\n", kaweth->configuration.hw_addr);
1da177e4
LT		 1114
1115 if(!memcmp(&kaweth->configuration.hw_addr,
1116 &bcast_addr,
1117 sizeof(bcast_addr))) {
49ae25b0 1118 dev_err(dev, "Firmware not functioning properly, no net device created\n");
1da177e4
LT		 1119 goto err_free_netdev;
1120 }
1121
1122 if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
49ae25b0 1123 dev_dbg(dev, "Error setting URB size\n");
1da177e4
LT		 1124 goto err_free_netdev;
1125 }
1126
1127 if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
49ae25b0 1128 dev_err(dev, "Error setting SOFS wait\n");
1da177e4
LT		 1129 goto err_free_netdev;
1130 }
1131
1132 result = kaweth_set_receive_filter(kaweth,
1133 KAWETH_PACKET_FILTER_DIRECTED |
1134 KAWETH_PACKET_FILTER_BROADCAST |
1135 KAWETH_PACKET_FILTER_MULTICAST);
1136
1137 if(result < 0) {
49ae25b0 1138 dev_err(dev, "Error setting receive filter\n");
1da177e4
LT		 1139 goto err_free_netdev;
1140 }
1141
49ae25b0 1142 dev_dbg(dev, "Initializing net device.\n");
1da177e4 1143
b98b98f9
ON		 1144 kaweth->intf = intf;
1145
1da177e4
LT		 1146 kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1147 if (!kaweth->tx_urb)
1148 goto err_free_netdev;
1149 kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1150 if (!kaweth->rx_urb)
1151 goto err_only_tx;
1152 kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
1153 if (!kaweth->irq_urb)
1154 goto err_tx_and_rx;
1155
997ea58e 1156 kaweth->intbuffer = usb_alloc_coherent( kaweth->dev,
1da177e4
LT		 1157 INTBUFFERSIZE,
1158 GFP_KERNEL,
1159 &kaweth->intbufferhandle);
1160 if (!kaweth->intbuffer)
1161 goto err_tx_and_rx_and_irq;
997ea58e 1162 kaweth->rx_buf = usb_alloc_coherent( kaweth->dev,
1da177e4
LT		 1163 KAWETH_BUF_SIZE,
1164 GFP_KERNEL,
1165 &kaweth->rxbufferhandle);
1166 if (!kaweth->rx_buf)
1167 goto err_all_but_rxbuf;
1168
1169 memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr));
1170 memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr,
1171 sizeof(kaweth->configuration.hw_addr));
1172
321ea8b2 1173 netdev->netdev_ops = &kaweth_netdev_ops;
1da177e4 1174 netdev->watchdog_timeo = KAWETH_TX_TIMEOUT;
1da177e4
LT		 1175 netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size);
1176 SET_ETHTOOL_OPS(netdev, &ops);
1177
1178 /* kaweth is zeroed as part of alloc_netdev */
c4028958 1179 INIT_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl);
1da177e4
LT		 1180 usb_set_intfdata(intf, kaweth);
1181
1182#if 0
1183// dma_supported() is deeply broken on almost all architectures
49ae25b0 1184 if (dma_supported (dev, 0xffffffffffffffffULL))
1da177e4
LT		 1185 kaweth->net->features |= NETIF_F_HIGHDMA;
1186#endif
1187
49ae25b0 1188 SET_NETDEV_DEV(netdev, dev);
1da177e4 1189 if (register_netdev(netdev) != 0) {
49ae25b0 1190 dev_err(dev, "Error registering netdev.\n");
1da177e4
LT		 1191 goto err_intfdata;
1192 }
1193
49ae25b0 1194 dev_info(dev, "kaweth interface created at %s\n",
880c9c66 1195 kaweth->net->name);
1da177e4 1196
49ae25b0 1197 dev_dbg(dev, "Kaweth probe returning.\n");
1da177e4
LT		 1198
1199 return 0;
1200
1201err_intfdata:
1202 usb_set_intfdata(intf, NULL);
997ea58e 1203 usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1da177e4 1204err_all_but_rxbuf:
997ea58e 1205 usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1da177e4
LT		 1206err_tx_and_rx_and_irq:
1207 usb_free_urb(kaweth->irq_urb);
1208err_tx_and_rx:
1209 usb_free_urb(kaweth->rx_urb);
1210err_only_tx:
1211 usb_free_urb(kaweth->tx_urb);
1212err_free_netdev:
1213 free_netdev(netdev);
1214
1215 return -EIO;
1216}
1217
1218/****************************************************************
1219 * kaweth_disconnect
1220 ****************************************************************/
1221static void kaweth_disconnect(struct usb_interface *intf)
1222{
1223 struct kaweth_device *kaweth = usb_get_intfdata(intf);
1224 struct net_device *netdev;
1225
880c9c66 1226 dev_info(&intf->dev, "Unregistering\n");
1da177e4
LT		 1227
1228 usb_set_intfdata(intf, NULL);
1229 if (!kaweth) {
25985edc 1230 dev_warn(&intf->dev, "unregistering non-existent device\n");
1da177e4
LT		 1231 return;
1232 }
1233 netdev = kaweth->net;
1da177e4 1234
49ae25b0 1235 netdev_dbg(kaweth->net, "Unregistering net device\n");
1da177e4
LT		 1236 unregister_netdev(netdev);
1237
1238 usb_free_urb(kaweth->rx_urb);
1239 usb_free_urb(kaweth->tx_urb);
1240 usb_free_urb(kaweth->irq_urb);
1241
997ea58e
DM		 1242 usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1243 usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1da177e4
LT		 1244
1245 free_netdev(netdev);
1246}
1247
1248
1249// FIXME this completion stuff is a modified clone of
1250// an OLD version of some stuff in usb.c ...
1251struct usb_api_data {
1252 wait_queue_head_t wqh;
1253 int done;
1254};
1255
1256/*-------------------------------------------------------------------*
1257 * completion handler for compatibility wrappers (sync control/bulk) *
1258 *-------------------------------------------------------------------*/
7d12e780 1259static void usb_api_blocking_completion(struct urb *urb)
1da177e4
LT		 1260{
1261 struct usb_api_data *awd = (struct usb_api_data *)urb->context;
1262
1263 awd->done=1;
1264 wake_up(&awd->wqh);
1265}
1266
1267/*-------------------------------------------------------------------*
1268 * COMPATIBILITY STUFF *
1269 *-------------------------------------------------------------------*/
1270
1271// Starts urb and waits for completion or timeout
1272static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length)
1273{
1274 struct usb_api_data awd;
1275 int status;
1276
1277 init_waitqueue_head(&awd.wqh);
1278 awd.done = 0;
1279
1280 urb->context = &awd;
1281 status = usb_submit_urb(urb, GFP_NOIO);
1282 if (status) {
1283 // something went wrong
1284 usb_free_urb(urb);
1285 return status;
1286 }
1287
1288 if (!wait_event_timeout(awd.wqh, awd.done, timeout)) {
1289 // timeout
4dc89948 1290 dev_warn(&urb->dev->dev, "usb_control/bulk_msg: timeout\n");
1da177e4
LT		 1291 usb_kill_urb(urb); // remove urb safely
1292 status = -ETIMEDOUT;
1293 }
1294 else {
1295 status = urb->status;
1296 }
1297
1298 if (actual_length) {
1299 *actual_length = urb->actual_length;
1300 }
1301
1302 usb_free_urb(urb);
1303 return status;
1304}
1305
1306/*-------------------------------------------------------------------*/
1307// returns status (negative) or length (positive)
1308static int kaweth_internal_control_msg(struct usb_device *usb_dev,
1309 unsigned int pipe,
1310 struct usb_ctrlrequest *cmd, void *data,
1311 int len, int timeout)
1312{
1313 struct urb *urb;
1314 int retv;
b98b98f9 1315 int length = 0; /* shut up GCC */
1da177e4 1316
e4c7f259 1317 urb = usb_alloc_urb(0, GFP_ATOMIC);
1da177e4
LT		 1318 if (!urb)
1319 return -ENOMEM;
1320
1321 usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data,
1322 len, usb_api_blocking_completion, NULL);
1323
1324 retv = usb_start_wait_urb(urb, timeout, &length);
1325 if (retv < 0) {
1326 return retv;
1327 }
1328 else {
1329 return length;
1330 }
1331}
1332
d632eb1b 1333module_usb_driver(kaweth_driver);
Linux kernel - Deliverables
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