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net: typhoon: Use net_device_stats from struct net_device
[linux-block.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>
7c0f6ba6 57#include <linux/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 */
806 if (skb_cloned(skb) || skb_headroom(skb) < 2) {
807 /* no such luck - we make our own */
808 struct sk_buff *copied_skb;
809 copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC);
810 dev_kfree_skb_irq(skb);
811 skb = copied_skb;
812 if (!copied_skb) {
813 kaweth->stats.tx_errors++;
814 netif_start_queue(net);
4ff61c8f 815 spin_unlock_irq(&kaweth->device_lock);
6ed10654 816 return NETDEV_TX_OK;
1da177e4
LT		 817 }
818 }
819
820 private_header = (__le16 *)__skb_push(skb, 2);
821 *private_header = cpu_to_le16(skb->len-2);
822 kaweth->tx_skb = skb;
823
824 usb_fill_bulk_urb(kaweth->tx_urb,
825 kaweth->dev,
826 usb_sndbulkpipe(kaweth->dev, 2),
827 private_header,
828 skb->len,
829 kaweth_usb_transmit_complete,
830 kaweth);
831 kaweth->end = 0;
1da177e4
LT		 832
833 if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC)))
834 {
4dc89948 835 dev_warn(&net->dev, "kaweth failed tx_urb %d\n", res);
1a2ea1df 836skip:
1da177e4
LT		 837 kaweth->stats.tx_errors++;
838
839 netif_start_queue(net);
840 dev_kfree_skb_irq(skb);
841 }
842 else
843 {
844 kaweth->stats.tx_packets++;
845 kaweth->stats.tx_bytes += skb->len;
1da177e4
LT		 846 }
847
4ff61c8f 848 spin_unlock_irq(&kaweth->device_lock);
1da177e4 849
6ed10654 850 return NETDEV_TX_OK;
1da177e4
LT		 851}
852
853/****************************************************************
854 * kaweth_set_rx_mode
855 ****************************************************************/
856static void kaweth_set_rx_mode(struct net_device *net)
857{
858 struct kaweth_device *kaweth = netdev_priv(net);
859
860 __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED |
861 KAWETH_PACKET_FILTER_BROADCAST |
862 KAWETH_PACKET_FILTER_MULTICAST;
863
49ae25b0 864 netdev_dbg(net, "Setting Rx mode to %d\n", packet_filter_bitmap);
1da177e4
LT		 865
866 netif_stop_queue(net);
867
868 if (net->flags & IFF_PROMISC) {
869 packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS;
870 }
4cd24eaf 871 else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1da177e4
LT		 872 packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST;
873 }
874
875 kaweth->packet_filter_bitmap = packet_filter_bitmap;
876 netif_wake_queue(net);
877}
878
879/****************************************************************
880 * kaweth_async_set_rx_mode
881 ****************************************************************/
882static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth)
883{
710b523a 884 int result;
1da177e4 885 __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap;
710b523a 886
1da177e4
LT		 887 kaweth->packet_filter_bitmap = 0;
888 if (packet_filter_bitmap == 0)
889 return;
890
710b523a
LF		 891 if (in_interrupt())
892 return;
893
1da177e4
LT		 894 result = kaweth_control(kaweth,
895 usb_sndctrlpipe(kaweth->dev, 0),
896 KAWETH_COMMAND_SET_PACKET_FILTER,
897 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
898 packet_filter_bitmap,
899 0,
900 (void *)&kaweth->scratch,
901 0,
902 KAWETH_CONTROL_TIMEOUT);
903
904 if(result < 0) {
db6b2219
GKH		 905 dev_err(&kaweth->intf->dev, "Failed to set Rx mode: %d\n",
906 result);
1da177e4
LT		 907 }
908 else {
49ae25b0
GKH		 909 netdev_dbg(kaweth->net, "Set Rx mode to %d\n",
910 packet_filter_bitmap);
1da177e4 911 }
1da177e4
LT		 912}
913
914/****************************************************************
915 * kaweth_netdev_stats
916 ****************************************************************/
917static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev)
918{
919 struct kaweth_device *kaweth = netdev_priv(dev);
920 return &kaweth->stats;
921}
922
923/****************************************************************
924 * kaweth_tx_timeout
925 ****************************************************************/
926static void kaweth_tx_timeout(struct net_device *net)
927{
928 struct kaweth_device *kaweth = netdev_priv(net);
929
4dc89948 930 dev_warn(&net->dev, "%s: Tx timed out. Resetting.\n", net->name);
1da177e4 931 kaweth->stats.tx_errors++;
860e9538 932 netif_trans_update(net);
1da177e4
LT		 933
934 usb_unlink_urb(kaweth->tx_urb);
935}
936
1a2ea1df
ON		 937/****************************************************************
938 * kaweth_suspend
939 ****************************************************************/
940static int kaweth_suspend(struct usb_interface *intf, pm_message_t message)
941{
942 struct kaweth_device *kaweth = usb_get_intfdata(intf);
943 unsigned long flags;
944
945 spin_lock_irqsave(&kaweth->device_lock, flags);
946 kaweth->status |= KAWETH_STATUS_SUSPENDING;
947 spin_unlock_irqrestore(&kaweth->device_lock, flags);
948
949 kaweth_kill_urbs(kaweth);
950 return 0;
951}
952
953/****************************************************************
954 * kaweth_resume
955 ****************************************************************/
956static int kaweth_resume(struct usb_interface *intf)
957{
958 struct kaweth_device *kaweth = usb_get_intfdata(intf);
959 unsigned long flags;
960
961 spin_lock_irqsave(&kaweth->device_lock, flags);
962 kaweth->status &= ~KAWETH_STATUS_SUSPENDING;
963 spin_unlock_irqrestore(&kaweth->device_lock, flags);
964
965 if (!kaweth->opened)
966 return 0;
967 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
968 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
969
970 return 0;
971}
972
1da177e4
LT		 973/****************************************************************
974 * kaweth_probe
975 ****************************************************************/
321ea8b2
ON		 976
977
978static const struct net_device_ops kaweth_netdev_ops = {
979 .ndo_open = kaweth_open,
980 .ndo_stop = kaweth_close,
981 .ndo_start_xmit = kaweth_start_xmit,
982 .ndo_tx_timeout = kaweth_tx_timeout,
afc4b13d 983 .ndo_set_rx_mode = kaweth_set_rx_mode,
321ea8b2 984 .ndo_get_stats = kaweth_netdev_stats,
240c102d
BH		 985 .ndo_set_mac_address = eth_mac_addr,
986 .ndo_validate_addr = eth_validate_addr,
321ea8b2
ON		 987};
988
1da177e4
LT		 989static int kaweth_probe(
990 struct usb_interface *intf,
991 const struct usb_device_id *id /* from id_table */
992 )
993{
49ae25b0
GKH		 994 struct device *dev = &intf->dev;
995 struct usb_device *udev = interface_to_usbdev(intf);
1da177e4
LT		 996 struct kaweth_device *kaweth;
997 struct net_device *netdev;
998 const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
999 int result = 0;
575ced7f 1000 int rv = -EIO;
1da177e4 1001
49ae25b0
GKH		 1002 dev_dbg(dev,
1003 "Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x\n",
1004 udev->devnum, le16_to_cpu(udev->descriptor.idVendor),
1005 le16_to_cpu(udev->descriptor.idProduct),
1006 le16_to_cpu(udev->descriptor.bcdDevice));
1da177e4 1007
49ae25b0 1008 dev_dbg(dev, "Device at %p\n", udev);
1da177e4 1009
49ae25b0
GKH		 1010 dev_dbg(dev, "Descriptor length: %x type: %x\n",
1011 (int)udev->descriptor.bLength,
1012 (int)udev->descriptor.bDescriptorType);
1da177e4
LT		 1013
1014 netdev = alloc_etherdev(sizeof(*kaweth));
1015 if (!netdev)
1016 return -ENOMEM;
1017
1018 kaweth = netdev_priv(netdev);
49ae25b0 1019 kaweth->dev = udev;
1da177e4 1020 kaweth->net = netdev;
60bcabd0 1021 kaweth->intf = intf;
1da177e4
LT		 1022
1023 spin_lock_init(&kaweth->device_lock);
1024 init_waitqueue_head(&kaweth->term_wait);
1025
49ae25b0 1026 dev_dbg(dev, "Resetting.\n");
1da177e4
LT		 1027
1028 kaweth_reset(kaweth);
1029
1030 /*
1031 * If high byte of bcdDevice is nonzero, firmware is already
1032 * downloaded. Don't try to do it again, or we'll hang the device.
1033 */
1034
49ae25b0
GKH		 1035 if (le16_to_cpu(udev->descriptor.bcdDevice) >> 8) {
1036 dev_info(dev, "Firmware present in device.\n");
1da177e4
LT		 1037 } else {
1038 /* Download the firmware */
49ae25b0 1039 dev_info(dev, "Downloading firmware...\n");
1da177e4 1040 kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL);
575ced7f
ON		 1041 if (!kaweth->firmware_buf) {
1042 rv = -ENOMEM;
1043 goto err_free_netdev;
1044 }
1da177e4 1045 if ((result = kaweth_download_firmware(kaweth,
79682499 1046 "kaweth/new_code.bin",
1da177e4
LT		 1047 100,
1048 2)) < 0) {
49ae25b0 1049 dev_err(dev, "Error downloading firmware (%d)\n",
db6b2219 1050 result);
1da177e4
LT		 1051 goto err_fw;
1052 }
1053
1054 if ((result = kaweth_download_firmware(kaweth,
79682499 1055 "kaweth/new_code_fix.bin",
1da177e4
LT		 1056 100,
1057 3)) < 0) {
49ae25b0 1058 dev_err(dev, "Error downloading firmware fix (%d)\n",
db6b2219 1059 result);
1da177e4
LT		 1060 goto err_fw;
1061 }
1062
1063 if ((result = kaweth_download_firmware(kaweth,
79682499 1064 "kaweth/trigger_code.bin",
1da177e4
LT		 1065 126,
1066 2)) < 0) {
49ae25b0 1067 dev_err(dev, "Error downloading trigger code (%d)\n",
db6b2219 1068 result);
1da177e4
LT		 1069 goto err_fw;
1070
1071 }
1072
1073 if ((result = kaweth_download_firmware(kaweth,
79682499 1074 "kaweth/trigger_code_fix.bin",
1da177e4
LT		 1075 126,
1076 3)) < 0) {
49ae25b0 1077 dev_err(dev, "Error downloading trigger code fix (%d)\n", result);
1da177e4
LT		 1078 goto err_fw;
1079 }
1080
1081
1082 if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
49ae25b0 1083 dev_err(dev, "Error triggering firmware (%d)\n", result);
1da177e4
LT		 1084 goto err_fw;
1085 }
1086
1087 /* Device will now disappear for a moment... */
49ae25b0 1088 dev_info(dev, "Firmware loaded. I'll be back...\n");
1da177e4
LT		 1089err_fw:
1090 free_page((unsigned long)kaweth->firmware_buf);
1091 free_netdev(netdev);
1092 return -EIO;
1093 }
1094
1095 result = kaweth_read_configuration(kaweth);
1096
1097 if(result < 0) {
49ae25b0 1098 dev_err(dev, "Error reading configuration (%d), no net device created\n", result);
1da177e4
LT		 1099 goto err_free_netdev;
1100 }
1101
49ae25b0
GKH		 1102 dev_info(dev, "Statistics collection: %x\n", kaweth->configuration.statistics_mask);
1103 dev_info(dev, "Multicast filter limit: %x\n", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
1104 dev_info(dev, "MTU: %d\n", le16_to_cpu(kaweth->configuration.segment_size));
1105 dev_info(dev, "Read MAC address %pM\n", kaweth->configuration.hw_addr);
1da177e4
LT		 1106
1107 if(!memcmp(&kaweth->configuration.hw_addr,
1108 &bcast_addr,
1109 sizeof(bcast_addr))) {
49ae25b0 1110 dev_err(dev, "Firmware not functioning properly, no net device created\n");
1da177e4
LT		 1111 goto err_free_netdev;
1112 }
1113
1114 if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
49ae25b0 1115 dev_dbg(dev, "Error setting URB size\n");
1da177e4
LT		 1116 goto err_free_netdev;
1117 }
1118
1119 if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
49ae25b0 1120 dev_err(dev, "Error setting SOFS wait\n");
1da177e4
LT		 1121 goto err_free_netdev;
1122 }
1123
1124 result = kaweth_set_receive_filter(kaweth,
1125 KAWETH_PACKET_FILTER_DIRECTED |
1126 KAWETH_PACKET_FILTER_BROADCAST |
1127 KAWETH_PACKET_FILTER_MULTICAST);
1128
1129 if(result < 0) {
49ae25b0 1130 dev_err(dev, "Error setting receive filter\n");
1da177e4
LT		 1131 goto err_free_netdev;
1132 }
1133
49ae25b0 1134 dev_dbg(dev, "Initializing net device.\n");
1da177e4
LT		 1135
1136 kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1137 if (!kaweth->tx_urb)
1138 goto err_free_netdev;
1139 kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1140 if (!kaweth->rx_urb)
1141 goto err_only_tx;
1142 kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
1143 if (!kaweth->irq_urb)
1144 goto err_tx_and_rx;
1145
997ea58e 1146 kaweth->intbuffer = usb_alloc_coherent( kaweth->dev,
1da177e4
LT		 1147 INTBUFFERSIZE,
1148 GFP_KERNEL,
1149 &kaweth->intbufferhandle);
1150 if (!kaweth->intbuffer)
1151 goto err_tx_and_rx_and_irq;
997ea58e 1152 kaweth->rx_buf = usb_alloc_coherent( kaweth->dev,
1da177e4
LT		 1153 KAWETH_BUF_SIZE,
1154 GFP_KERNEL,
1155 &kaweth->rxbufferhandle);
1156 if (!kaweth->rx_buf)
1157 goto err_all_but_rxbuf;
1158
1159 memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr));
1160 memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr,
1161 sizeof(kaweth->configuration.hw_addr));
1162
321ea8b2 1163 netdev->netdev_ops = &kaweth_netdev_ops;
1da177e4 1164 netdev->watchdog_timeo = KAWETH_TX_TIMEOUT;
1da177e4 1165 netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size);
7ad24ea4 1166 netdev->ethtool_ops = &ops;
1da177e4
LT		 1167
1168 /* kaweth is zeroed as part of alloc_netdev */
c4028958 1169 INIT_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl);
1da177e4
LT		 1170 usb_set_intfdata(intf, kaweth);
1171
49ae25b0 1172 SET_NETDEV_DEV(netdev, dev);
1da177e4 1173 if (register_netdev(netdev) != 0) {
49ae25b0 1174 dev_err(dev, "Error registering netdev.\n");
1da177e4
LT		 1175 goto err_intfdata;
1176 }
1177
49ae25b0 1178 dev_info(dev, "kaweth interface created at %s\n",
880c9c66 1179 kaweth->net->name);
1da177e4 1180
1da177e4
LT		 1181 return 0;
1182
1183err_intfdata:
1184 usb_set_intfdata(intf, NULL);
997ea58e 1185 usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1da177e4 1186err_all_but_rxbuf:
997ea58e 1187 usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1da177e4
LT		 1188err_tx_and_rx_and_irq:
1189 usb_free_urb(kaweth->irq_urb);
1190err_tx_and_rx:
1191 usb_free_urb(kaweth->rx_urb);
1192err_only_tx:
1193 usb_free_urb(kaweth->tx_urb);
1194err_free_netdev:
1195 free_netdev(netdev);
1196
575ced7f 1197 return rv;
1da177e4
LT		 1198}
1199
1200/****************************************************************
1201 * kaweth_disconnect
1202 ****************************************************************/
1203static void kaweth_disconnect(struct usb_interface *intf)
1204{
1205 struct kaweth_device *kaweth = usb_get_intfdata(intf);
1206 struct net_device *netdev;
1207
1da177e4
LT		 1208 usb_set_intfdata(intf, NULL);
1209 if (!kaweth) {
25985edc 1210 dev_warn(&intf->dev, "unregistering non-existent device\n");
1da177e4
LT		 1211 return;
1212 }
1213 netdev = kaweth->net;
1da177e4 1214
49ae25b0 1215 netdev_dbg(kaweth->net, "Unregistering net device\n");
1da177e4
LT		 1216 unregister_netdev(netdev);
1217
1218 usb_free_urb(kaweth->rx_urb);
1219 usb_free_urb(kaweth->tx_urb);
1220 usb_free_urb(kaweth->irq_urb);
1221
997ea58e
DM		 1222 usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1223 usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1da177e4
LT		 1224
1225 free_netdev(netdev);
1226}
1227
1228
1229// FIXME this completion stuff is a modified clone of
1230// an OLD version of some stuff in usb.c ...
1231struct usb_api_data {
1232 wait_queue_head_t wqh;
1233 int done;
1234};
1235
1236/*-------------------------------------------------------------------*
1237 * completion handler for compatibility wrappers (sync control/bulk) *
1238 *-------------------------------------------------------------------*/
7d12e780 1239static void usb_api_blocking_completion(struct urb *urb)
1da177e4
LT		 1240{
1241 struct usb_api_data *awd = (struct usb_api_data *)urb->context;
1242
1243 awd->done=1;
1244 wake_up(&awd->wqh);
1245}
1246
1247/*-------------------------------------------------------------------*
1248 * COMPATIBILITY STUFF *
1249 *-------------------------------------------------------------------*/
1250
1251// Starts urb and waits for completion or timeout
1252static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length)
1253{
1254 struct usb_api_data awd;
1255 int status;
1256
1257 init_waitqueue_head(&awd.wqh);
1258 awd.done = 0;
1259
1260 urb->context = &awd;
49c9e7c2 1261 status = usb_submit_urb(urb, GFP_ATOMIC);
1da177e4
LT		 1262 if (status) {
1263 // something went wrong
1264 usb_free_urb(urb);
1265 return status;
1266 }
1267
1268 if (!wait_event_timeout(awd.wqh, awd.done, timeout)) {
1269 // timeout
4dc89948 1270 dev_warn(&urb->dev->dev, "usb_control/bulk_msg: timeout\n");
1da177e4
LT		 1271 usb_kill_urb(urb); // remove urb safely
1272 status = -ETIMEDOUT;
1273 }
1274 else {
1275 status = urb->status;
1276 }
1277
1278 if (actual_length) {
1279 *actual_length = urb->actual_length;
1280 }
1281
1282 usb_free_urb(urb);
1283 return status;
1284}
1285
1286/*-------------------------------------------------------------------*/
1287// returns status (negative) or length (positive)
1288static int kaweth_internal_control_msg(struct usb_device *usb_dev,
1289 unsigned int pipe,
1290 struct usb_ctrlrequest *cmd, void *data,
1291 int len, int timeout)
1292{
1293 struct urb *urb;
1294 int retv;
b98b98f9 1295 int length = 0; /* shut up GCC */
1da177e4 1296
e4c7f259 1297 urb = usb_alloc_urb(0, GFP_ATOMIC);
1da177e4
LT		 1298 if (!urb)
1299 return -ENOMEM;
1300
1301 usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data,
1302 len, usb_api_blocking_completion, NULL);
1303
1304 retv = usb_start_wait_urb(urb, timeout, &length);
1305 if (retv < 0) {
1306 return retv;
1307 }
1308 else {
1309 return length;
1310 }
1311}
1312
d632eb1b 1313module_usb_driver(kaweth_driver);
Linux 6.x block layer and io_uring tree(s)