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[mirror_ubuntu-bionic-kernel.git] / drivers / net / usb / kaweth.c
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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 */
148 { USB_DEVICE(0x0846, 0x1001) }, /* NetGear EA-101 */
149 { USB_DEVICE(0x0846, 0x1002) }, /* NetGear EA-101 */
150 { USB_DEVICE(0x085a, 0x0008) }, /* PortGear Ethernet Adapter */
151 { USB_DEVICE(0x085a, 0x0009) }, /* PortGear Ethernet Adapter */
152 { USB_DEVICE(0x087d, 0x5704) }, /* Jaton USB Ethernet Device Adapter */
153 { USB_DEVICE(0x0951, 0x0008) }, /* Kingston Technology USB Ethernet Adapter */
154 { USB_DEVICE(0x095a, 0x3003) }, /* Portsmith Express Ethernet Adapter */
155 { USB_DEVICE(0x10bd, 0x1427) }, /* ASANTE USB To Ethernet Adapter */
156 { USB_DEVICE(0x1342, 0x0204) }, /* Mobility USB-Ethernet Adapter */
157 { USB_DEVICE(0x13d2, 0x0400) }, /* Shark Pocket Adapter */
158 { USB_DEVICE(0x1485, 0x0001) }, /* Silicom U2E */
159 { USB_DEVICE(0x1485, 0x0002) }, /* Psion Dacom Gold Port Ethernet */
160 { USB_DEVICE(0x1645, 0x0005) }, /* Entrega E45 */
161 { USB_DEVICE(0x1645, 0x0008) }, /* Entrega USB Ethernet Adapter */
162 { USB_DEVICE(0x1645, 0x8005) }, /* PortGear Ethernet Adapter */
486ba2a9 163 { USB_DEVICE(0x1668, 0x0323) }, /* Actiontec USB Ethernet */
1da177e4
LT		 164 { USB_DEVICE(0x2001, 0x4000) }, /* D-link DSB-650C */
165 {} /* Null terminator */
166};
167
168MODULE_DEVICE_TABLE (usb, usb_klsi_table);
169
170/****************************************************************
171 * kaweth_driver
172 ****************************************************************/
173static struct usb_driver kaweth_driver = {
1da177e4
LT		 174 .name = driver_name,
175 .probe = kaweth_probe,
176 .disconnect = kaweth_disconnect,
1a2ea1df
ON		 177 .suspend = kaweth_suspend,
178 .resume = kaweth_resume,
1da177e4 179 .id_table = usb_klsi_table,
b98b98f9 180 .supports_autosuspend = 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;
209} __attribute__ ((packed));
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;
266
fbe2bafc 267 dbg("kaweth_control()");
1da177e4
LT		 268
269 if(in_interrupt()) {
fbe2bafc 270 dbg("in_interrupt()");
1da177e4
LT		 271 return -EBUSY;
272 }
273
274 dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
275
276 if (!dr) {
fbe2bafc 277 dbg("kmalloc() failed");
1da177e4
LT		 278 return -ENOMEM;
279 }
280
281 dr->bRequestType= requesttype;
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
LT		 286
287 return kaweth_internal_control_msg(kaweth->dev,
288 pipe,
289 dr,
290 data,
291 size,
292 timeout);
293}
294
295/****************************************************************
296 * kaweth_read_configuration
297 ****************************************************************/
298static int kaweth_read_configuration(struct kaweth_device *kaweth)
299{
300 int retval;
301
fbe2bafc 302 dbg("Reading kaweth configuration");
1da177e4
LT		 303
304 retval = kaweth_control(kaweth,
305 usb_rcvctrlpipe(kaweth->dev, 0),
306 KAWETH_COMMAND_GET_ETHERNET_DESC,
307 USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
308 0,
309 0,
310 (void *)&kaweth->configuration,
311 sizeof(kaweth->configuration),
312 KAWETH_CONTROL_TIMEOUT);
313
314 return retval;
315}
316
317/****************************************************************
318 * kaweth_set_urb_size
319 ****************************************************************/
320static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size)
321{
322 int retval;
323
fbe2bafc 324 dbg("Setting URB size to %d", (unsigned)urb_size);
1da177e4
LT		 325
326 retval = kaweth_control(kaweth,
327 usb_sndctrlpipe(kaweth->dev, 0),
328 KAWETH_COMMAND_SET_URB_SIZE,
329 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
330 urb_size,
331 0,
332 (void *)&kaweth->scratch,
333 0,
334 KAWETH_CONTROL_TIMEOUT);
335
336 return retval;
337}
338
339/****************************************************************
340 * kaweth_set_sofs_wait
341 ****************************************************************/
342static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait)
343{
344 int retval;
345
fbe2bafc 346 dbg("Set SOFS wait to %d", (unsigned)sofs_wait);
1da177e4
LT		 347
348 retval = kaweth_control(kaweth,
349 usb_sndctrlpipe(kaweth->dev, 0),
350 KAWETH_COMMAND_SET_SOFS_WAIT,
351 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
352 sofs_wait,
353 0,
354 (void *)&kaweth->scratch,
355 0,
356 KAWETH_CONTROL_TIMEOUT);
357
358 return retval;
359}
360
361/****************************************************************
362 * kaweth_set_receive_filter
363 ****************************************************************/
364static int kaweth_set_receive_filter(struct kaweth_device *kaweth,
365 __u16 receive_filter)
366{
367 int retval;
368
fbe2bafc 369 dbg("Set receive filter to %d", (unsigned)receive_filter);
1da177e4
LT		 370
371 retval = kaweth_control(kaweth,
372 usb_sndctrlpipe(kaweth->dev, 0),
373 KAWETH_COMMAND_SET_PACKET_FILTER,
374 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
375 receive_filter,
376 0,
377 (void *)&kaweth->scratch,
378 0,
379 KAWETH_CONTROL_TIMEOUT);
380
381 return retval;
382}
383
384/****************************************************************
385 * kaweth_download_firmware
386 ****************************************************************/
387static int kaweth_download_firmware(struct kaweth_device *kaweth,
79682499 388 const char *fwname,
1da177e4
LT		 389 __u8 interrupt,
390 __u8 type)
391{
79682499
DW		 392 const struct firmware *fw;
393 int data_len;
394 int ret;
395
396 ret = request_firmware(&fw, fwname, &kaweth->dev->dev);
397 if (ret) {
398 err("Firmware request failed\n");
399 return ret;
400 }
401
402 if (fw->size > KAWETH_FIRMWARE_BUF_SIZE) {
403 err("Firmware too big: %zu", fw->size);
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
fbe2bafc 416 dbg("High: %i, Low:%i", kaweth->firmware_buf[3],
1da177e4
LT		 417 kaweth->firmware_buf[2]);
418
fbe2bafc 419 dbg("Downloading firmware at %p to kaweth device at %p",
79682499 420 fw->data, kaweth);
fbe2bafc 421 dbg("Firmware length: %d", data_len);
1da177e4
LT		 422
423 return kaweth_control(kaweth,
424 usb_sndctrlpipe(kaweth->dev, 0),
425 KAWETH_COMMAND_SCAN,
426 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
427 0,
428 0,
429 (void *)kaweth->firmware_buf,
430 data_len,
431 KAWETH_CONTROL_TIMEOUT);
432}
433
434/****************************************************************
435 * kaweth_trigger_firmware
436 ****************************************************************/
437static int kaweth_trigger_firmware(struct kaweth_device *kaweth,
438 __u8 interrupt)
439{
440 kaweth->firmware_buf[0] = 0xB6;
441 kaweth->firmware_buf[1] = 0xC3;
442 kaweth->firmware_buf[2] = 0x01;
443 kaweth->firmware_buf[3] = 0x00;
444 kaweth->firmware_buf[4] = 0x06;
445 kaweth->firmware_buf[5] = interrupt;
446 kaweth->firmware_buf[6] = 0x00;
447 kaweth->firmware_buf[7] = 0x00;
448
fbe2bafc 449 dbg("Triggering firmware");
1da177e4
LT		 450
451 return kaweth_control(kaweth,
452 usb_sndctrlpipe(kaweth->dev, 0),
453 KAWETH_COMMAND_SCAN,
454 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
455 0,
456 0,
457 (void *)kaweth->firmware_buf,
458 8,
459 KAWETH_CONTROL_TIMEOUT);
460}
461
462/****************************************************************
463 * kaweth_reset
464 ****************************************************************/
465static int kaweth_reset(struct kaweth_device *kaweth)
466{
467 int result;
468
fbe2bafc 469 dbg("kaweth_reset(%p)", kaweth);
1da177e4
LT		 470 result = kaweth_control(kaweth,
471 usb_sndctrlpipe(kaweth->dev, 0),
472 USB_REQ_SET_CONFIGURATION,
473 0,
474 kaweth->dev->config[0].desc.bConfigurationValue,
475 0,
476 NULL,
477 0,
478 KAWETH_CONTROL_TIMEOUT);
479
f2d45cd9 480 mdelay(10);
1da177e4 481
fbe2bafc 482 dbg("kaweth_reset() returns %d.",result);
1da177e4
LT		 483
484 return result;
485}
486
7d12e780 487static void kaweth_usb_receive(struct urb *);
55016f10 488static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t);
1da177e4
LT		 489
490/****************************************************************
491 int_callback
492*****************************************************************/
493
55016f10 494static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t mf)
1da177e4
LT		 495{
496 int status;
497
498 status = usb_submit_urb (kaweth->irq_urb, mf);
499 if (unlikely(status == -ENOMEM)) {
500 kaweth->suspend_lowmem_ctrl = 1;
501 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
502 } else {
503 kaweth->suspend_lowmem_ctrl = 0;
504 }
505
506 if (status)
507 err ("can't resubmit intr, %s-%s, status %d",
508 kaweth->dev->bus->bus_name,
509 kaweth->dev->devpath, status);
510}
511
7d12e780 512static void int_callback(struct urb *u)
1da177e4
LT		 513{
514 struct kaweth_device *kaweth = u->context;
515 int act_state;
c94cb314 516 int status = u->status;
1da177e4 517
c94cb314 518 switch (status) {
1da177e4
LT		 519 case 0: /* success */
520 break;
521 case -ECONNRESET: /* unlink */
522 case -ENOENT:
523 case -ESHUTDOWN:
524 return;
525 /* -EPIPE: should clear the halt */
526 default: /* error */
527 goto resubmit;
528 }
529
530 /* we check the link state to report changes */
531 if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) {
58125f95 532 if (act_state)
1da177e4
LT		 533 netif_carrier_on(kaweth->net);
534 else
535 netif_carrier_off(kaweth->net);
536
537 kaweth->linkstate = act_state;
538 }
539resubmit:
540 kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC);
541}
542
c4028958 543static void kaweth_resubmit_tl(struct work_struct *work)
1da177e4 544{
c4028958
DH		 545 struct kaweth_device *kaweth =
546 container_of(work, struct kaweth_device, lowmem_work.work);
1da177e4 547
1a2ea1df 548 if (IS_BLOCKED(kaweth->status))
1da177e4
LT		 549 return;
550
551 if (kaweth->suspend_lowmem_rx)
552 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
553
554 if (kaweth->suspend_lowmem_ctrl)
555 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
556}
557
558
559/****************************************************************
560 * kaweth_resubmit_rx_urb
561 ****************************************************************/
562static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth,
55016f10 563 gfp_t mem_flags)
1da177e4
LT		 564{
565 int result;
566
567 usb_fill_bulk_urb(kaweth->rx_urb,
568 kaweth->dev,
569 usb_rcvbulkpipe(kaweth->dev, 1),
570 kaweth->rx_buf,
571 KAWETH_BUF_SIZE,
572 kaweth_usb_receive,
573 kaweth);
574 kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
575 kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle;
576
577 if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) {
578 if (result == -ENOMEM) {
579 kaweth->suspend_lowmem_rx = 1;
580 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
581 }
fbe2bafc 582 err("resubmitting rx_urb %d failed", 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
LT		 596{
597 struct kaweth_device *kaweth = urb->context;
598 struct net_device *net = kaweth->net;
c94cb314 599 int status = urb->status;
1da177e4
LT		 600
601 int count = urb->actual_length;
602 int count2 = urb->transfer_buffer_length;
603
604 __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf);
605
606 struct sk_buff *skb;
607
710b523a
LF		 608 if (unlikely(status == -EPIPE)) {
609 kaweth->stats.rx_errors++;
1da177e4
LT		 610 kaweth->end = 1;
611 wake_up(&kaweth->term_wait);
710b523a 612 dbg("Status was -EPIPE.");
1da177e4
LT		 613 return;
614 }
710b523a
LF		 615 if (unlikely(status == -ECONNRESET || status == -ESHUTDOWN)) {
616 /* we are killed - set a flag and wake the disconnect handler */
617 kaweth->end = 1;
618 wake_up(&kaweth->term_wait);
619 dbg("Status was -ECONNRESET or -ESHUTDOWN.");
620 return;
621 }
622 if (unlikely(status == -EPROTO || status == -ETIME ||
623 status == -EILSEQ)) {
624 kaweth->stats.rx_errors++;
625 dbg("Status was -EPROTO, -ETIME, or -EILSEQ.");
626 return;
627 }
628 if (unlikely(status == -EOVERFLOW)) {
629 kaweth->stats.rx_errors++;
630 dbg("Status was -EOVERFLOW.");
631 }
1a2ea1df
ON		 632 spin_lock(&kaweth->device_lock);
633 if (IS_BLOCKED(kaweth->status)) {
634 spin_unlock(&kaweth->device_lock);
1da177e4 635 return;
1a2ea1df
ON		 636 }
637 spin_unlock(&kaweth->device_lock);
1da177e4 638
c94cb314 639 if(status && status != -EREMOTEIO && count != 1) {
fbe2bafc 640 err("%s RX status: %d count: %d packet_len: %d",
1da177e4 641 net->name,
c94cb314 642 status,
1da177e4
LT		 643 count,
644 (int)pkt_len);
645 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
646 return;
647 }
648
649 if(kaweth->net && (count > 2)) {
650 if(pkt_len > (count - 2)) {
fbe2bafc
ON		 651 err("Packet length too long for USB frame (pkt_len: %x, count: %x)",pkt_len, count);
652 err("Packet len & 2047: %x", pkt_len & 2047);
653 err("Count 2: %x", 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
fbe2bafc 688 dbg("Opening network device.");
1da177e4 689
b98b98f9
ON		 690 res = usb_autopm_get_interface(kaweth->intf);
691 if (res) {
692 err("Interface cannot be resumed.");
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:
724 usb_autopm_enable(kaweth->intf);
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
b98b98f9
ON		 761 usb_autopm_enable(kaweth->intf);
762
1da177e4
LT		 763 return 0;
764}
765
766static void kaweth_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
767{
b3ebd522 768 struct kaweth_device *kaweth = netdev_priv(dev);
1da177e4
LT		 769
770 strlcpy(info->driver, driver_name, sizeof(info->driver));
b3ebd522
ON		 771 usb_make_path(kaweth->dev, info->bus_info, sizeof (info->bus_info));
772}
773
774static u32 kaweth_get_link(struct net_device *dev)
775{
776 struct kaweth_device *kaweth = netdev_priv(dev);
777
778 return kaweth->linkstate;
1da177e4
LT		 779}
780
781static struct ethtool_ops ops = {
b3ebd522
ON		 782 .get_drvinfo = kaweth_get_drvinfo,
783 .get_link = kaweth_get_link
1da177e4
LT		 784};
785
786/****************************************************************
787 * kaweth_usb_transmit_complete
788 ****************************************************************/
7d12e780 789static void kaweth_usb_transmit_complete(struct urb *urb)
1da177e4
LT		 790{
791 struct kaweth_device *kaweth = urb->context;
792 struct sk_buff *skb = kaweth->tx_skb;
c94cb314 793 int status = urb->status;
1da177e4 794
c94cb314
ON		 795 if (unlikely(status != 0))
796 if (status != -ENOENT)
797 dbg("%s: TX status %d.", kaweth->net->name, status);
1da177e4
LT		 798
799 netif_wake_queue(kaweth->net);
800 dev_kfree_skb_irq(skb);
801}
802
803/****************************************************************
804 * kaweth_start_xmit
805 ****************************************************************/
806static int kaweth_start_xmit(struct sk_buff *skb, struct net_device *net)
807{
808 struct kaweth_device *kaweth = netdev_priv(net);
809 __le16 *private_header;
810
811 int res;
812
4ff61c8f 813 spin_lock_irq(&kaweth->device_lock);
1da177e4 814
1da177e4
LT		 815 kaweth_async_set_rx_mode(kaweth);
816 netif_stop_queue(net);
1a2ea1df
ON		 817 if (IS_BLOCKED(kaweth->status)) {
818 goto skip;
819 }
1da177e4
LT		 820
821 /* We now decide whether we can put our special header into the sk_buff */
822 if (skb_cloned(skb) || skb_headroom(skb) < 2) {
823 /* no such luck - we make our own */
824 struct sk_buff *copied_skb;
825 copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC);
826 dev_kfree_skb_irq(skb);
827 skb = copied_skb;
828 if (!copied_skb) {
829 kaweth->stats.tx_errors++;
830 netif_start_queue(net);
4ff61c8f 831 spin_unlock_irq(&kaweth->device_lock);
1da177e4
LT		 832 return 0;
833 }
834 }
835
836 private_header = (__le16 *)__skb_push(skb, 2);
837 *private_header = cpu_to_le16(skb->len-2);
838 kaweth->tx_skb = skb;
839
840 usb_fill_bulk_urb(kaweth->tx_urb,
841 kaweth->dev,
842 usb_sndbulkpipe(kaweth->dev, 2),
843 private_header,
844 skb->len,
845 kaweth_usb_transmit_complete,
846 kaweth);
847 kaweth->end = 0;
1da177e4
LT		 848
849 if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC)))
850 {
4dc89948 851 dev_warn(&net->dev, "kaweth failed tx_urb %d\n", res);
1a2ea1df 852skip:
1da177e4
LT		 853 kaweth->stats.tx_errors++;
854
855 netif_start_queue(net);
856 dev_kfree_skb_irq(skb);
857 }
858 else
859 {
860 kaweth->stats.tx_packets++;
861 kaweth->stats.tx_bytes += skb->len;
862 net->trans_start = jiffies;
863 }
864
4ff61c8f 865 spin_unlock_irq(&kaweth->device_lock);
1da177e4
LT		 866
867 return 0;
868}
869
870/****************************************************************
871 * kaweth_set_rx_mode
872 ****************************************************************/
873static void kaweth_set_rx_mode(struct net_device *net)
874{
875 struct kaweth_device *kaweth = netdev_priv(net);
876
877 __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED |
878 KAWETH_PACKET_FILTER_BROADCAST |
879 KAWETH_PACKET_FILTER_MULTICAST;
880
fbe2bafc 881 dbg("Setting Rx mode to %d", packet_filter_bitmap);
1da177e4
LT		 882
883 netif_stop_queue(net);
884
885 if (net->flags & IFF_PROMISC) {
886 packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS;
887 }
888 else if ((net->mc_count) || (net->flags & IFF_ALLMULTI)) {
889 packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST;
890 }
891
892 kaweth->packet_filter_bitmap = packet_filter_bitmap;
893 netif_wake_queue(net);
894}
895
896/****************************************************************
897 * kaweth_async_set_rx_mode
898 ****************************************************************/
899static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth)
900{
710b523a 901 int result;
1da177e4 902 __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap;
710b523a 903
1da177e4
LT		 904 kaweth->packet_filter_bitmap = 0;
905 if (packet_filter_bitmap == 0)
906 return;
907
710b523a
LF		 908 if (in_interrupt())
909 return;
910
1da177e4
LT		 911 result = kaweth_control(kaweth,
912 usb_sndctrlpipe(kaweth->dev, 0),
913 KAWETH_COMMAND_SET_PACKET_FILTER,
914 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
915 packet_filter_bitmap,
916 0,
917 (void *)&kaweth->scratch,
918 0,
919 KAWETH_CONTROL_TIMEOUT);
920
921 if(result < 0) {
fbe2bafc 922 err("Failed to set Rx mode: %d", result);
1da177e4
LT		 923 }
924 else {
fbe2bafc 925 dbg("Set Rx mode to %d", packet_filter_bitmap);
1da177e4 926 }
1da177e4
LT		 927}
928
929/****************************************************************
930 * kaweth_netdev_stats
931 ****************************************************************/
932static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev)
933{
934 struct kaweth_device *kaweth = netdev_priv(dev);
935 return &kaweth->stats;
936}
937
938/****************************************************************
939 * kaweth_tx_timeout
940 ****************************************************************/
941static void kaweth_tx_timeout(struct net_device *net)
942{
943 struct kaweth_device *kaweth = netdev_priv(net);
944
4dc89948 945 dev_warn(&net->dev, "%s: Tx timed out. Resetting.\n", net->name);
1da177e4
LT		 946 kaweth->stats.tx_errors++;
947 net->trans_start = jiffies;
948
949 usb_unlink_urb(kaweth->tx_urb);
950}
951
1a2ea1df
ON		 952/****************************************************************
953 * kaweth_suspend
954 ****************************************************************/
955static int kaweth_suspend(struct usb_interface *intf, pm_message_t message)
956{
957 struct kaweth_device *kaweth = usb_get_intfdata(intf);
958 unsigned long flags;
959
b98b98f9 960 dbg("Suspending device");
1a2ea1df
ON		 961 spin_lock_irqsave(&kaweth->device_lock, flags);
962 kaweth->status |= KAWETH_STATUS_SUSPENDING;
963 spin_unlock_irqrestore(&kaweth->device_lock, flags);
964
965 kaweth_kill_urbs(kaweth);
966 return 0;
967}
968
969/****************************************************************
970 * kaweth_resume
971 ****************************************************************/
972static int kaweth_resume(struct usb_interface *intf)
973{
974 struct kaweth_device *kaweth = usb_get_intfdata(intf);
975 unsigned long flags;
976
b98b98f9 977 dbg("Resuming device");
1a2ea1df
ON		 978 spin_lock_irqsave(&kaweth->device_lock, flags);
979 kaweth->status &= ~KAWETH_STATUS_SUSPENDING;
980 spin_unlock_irqrestore(&kaweth->device_lock, flags);
981
982 if (!kaweth->opened)
983 return 0;
984 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
985 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
986
987 return 0;
988}
989
1da177e4
LT		 990/****************************************************************
991 * kaweth_probe
992 ****************************************************************/
321ea8b2
ON		 993
994
995static const struct net_device_ops kaweth_netdev_ops = {
996 .ndo_open = kaweth_open,
997 .ndo_stop = kaweth_close,
998 .ndo_start_xmit = kaweth_start_xmit,
999 .ndo_tx_timeout = kaweth_tx_timeout,
1000 .ndo_set_multicast_list = kaweth_set_rx_mode,
1001 .ndo_get_stats = kaweth_netdev_stats,
1002};
1003
1da177e4
LT		 1004static int kaweth_probe(
1005 struct usb_interface *intf,
1006 const struct usb_device_id *id /* from id_table */
1007 )
1008{
1009 struct usb_device *dev = interface_to_usbdev(intf);
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
fbe2bafc 1015 dbg("Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x",
1da177e4
LT		 1016 dev->devnum,
1017 le16_to_cpu(dev->descriptor.idVendor),
1018 le16_to_cpu(dev->descriptor.idProduct),
1019 le16_to_cpu(dev->descriptor.bcdDevice));
1020
fbe2bafc 1021 dbg("Device at %p", dev);
1da177e4 1022
fbe2bafc 1023 dbg("Descriptor length: %x type: %x",
1da177e4
LT		 1024 (int)dev->descriptor.bLength,
1025 (int)dev->descriptor.bDescriptorType);
1026
1027 netdev = alloc_etherdev(sizeof(*kaweth));
1028 if (!netdev)
1029 return -ENOMEM;
1030
1031 kaweth = netdev_priv(netdev);
1032 kaweth->dev = dev;
1033 kaweth->net = netdev;
1034
1035 spin_lock_init(&kaweth->device_lock);
1036 init_waitqueue_head(&kaweth->term_wait);
1037
fbe2bafc 1038 dbg("Resetting.");
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
1047 if (le16_to_cpu(dev->descriptor.bcdDevice) >> 8) {
880c9c66 1048 dev_info(&intf->dev, "Firmware present in device.\n");
1da177e4
LT		 1049 } else {
1050 /* Download the firmware */
880c9c66 1051 dev_info(&intf->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) {
fbe2bafc 1057 err("Error downloading firmware (%d)", 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) {
fbe2bafc 1065 err("Error downloading firmware fix (%d)", result);
1da177e4
LT		 1066 goto err_fw;
1067 }
1068
1069 if ((result = kaweth_download_firmware(kaweth,
79682499 1070 "kaweth/trigger_code.bin",
1da177e4
LT		 1071 126,
1072 2)) < 0) {
fbe2bafc 1073 err("Error downloading trigger code (%d)", result);
1da177e4
LT		 1074 goto err_fw;
1075
1076 }
1077
1078 if ((result = kaweth_download_firmware(kaweth,
79682499 1079 "kaweth/trigger_code_fix.bin",
1da177e4
LT		 1080 126,
1081 3)) < 0) {
fbe2bafc 1082 err("Error downloading trigger code fix (%d)", result);
1da177e4
LT		 1083 goto err_fw;
1084 }
1085
1086
1087 if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
fbe2bafc 1088 err("Error triggering firmware (%d)", result);
1da177e4
LT		 1089 goto err_fw;
1090 }
1091
1092 /* Device will now disappear for a moment... */
880c9c66 1093 dev_info(&intf->dev, "Firmware loaded. I'll be back...\n");
1da177e4
LT		 1094err_fw:
1095 free_page((unsigned long)kaweth->firmware_buf);
1096 free_netdev(netdev);
1097 return -EIO;
1098 }
1099
1100 result = kaweth_read_configuration(kaweth);
1101
1102 if(result < 0) {
fbe2bafc 1103 err("Error reading configuration (%d), no net device created", result);
1da177e4
LT		 1104 goto err_free_netdev;
1105 }
1106
880c9c66
GKH		 1107 dev_info(&intf->dev, "Statistics collection: %x\n", kaweth->configuration.statistics_mask);
1108 dev_info(&intf->dev, "Multicast filter limit: %x\n", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
1109 dev_info(&intf->dev, "MTU: %d\n", le16_to_cpu(kaweth->configuration.segment_size));
1110 dev_info(&intf->dev, "Read MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
1da177e4
LT		 1111 (int)kaweth->configuration.hw_addr[0],
1112 (int)kaweth->configuration.hw_addr[1],
1113 (int)kaweth->configuration.hw_addr[2],
1114 (int)kaweth->configuration.hw_addr[3],
1115 (int)kaweth->configuration.hw_addr[4],
1116 (int)kaweth->configuration.hw_addr[5]);
1117
1118 if(!memcmp(&kaweth->configuration.hw_addr,
1119 &bcast_addr,
1120 sizeof(bcast_addr))) {
fbe2bafc 1121 err("Firmware not functioning properly, no net device created");
1da177e4
LT		 1122 goto err_free_netdev;
1123 }
1124
1125 if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
fbe2bafc 1126 dbg("Error setting URB size");
1da177e4
LT		 1127 goto err_free_netdev;
1128 }
1129
1130 if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
fbe2bafc 1131 err("Error setting SOFS wait");
1da177e4
LT		 1132 goto err_free_netdev;
1133 }
1134
1135 result = kaweth_set_receive_filter(kaweth,
1136 KAWETH_PACKET_FILTER_DIRECTED |
1137 KAWETH_PACKET_FILTER_BROADCAST |
1138 KAWETH_PACKET_FILTER_MULTICAST);
1139
1140 if(result < 0) {
fbe2bafc 1141 err("Error setting receive filter");
1da177e4
LT		 1142 goto err_free_netdev;
1143 }
1144
fbe2bafc 1145 dbg("Initializing net device.");
1da177e4 1146
b98b98f9
ON		 1147 kaweth->intf = intf;
1148
1da177e4
LT		 1149 kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1150 if (!kaweth->tx_urb)
1151 goto err_free_netdev;
1152 kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1153 if (!kaweth->rx_urb)
1154 goto err_only_tx;
1155 kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
1156 if (!kaweth->irq_urb)
1157 goto err_tx_and_rx;
1158
1159 kaweth->intbuffer = usb_buffer_alloc( kaweth->dev,
1160 INTBUFFERSIZE,
1161 GFP_KERNEL,
1162 &kaweth->intbufferhandle);
1163 if (!kaweth->intbuffer)
1164 goto err_tx_and_rx_and_irq;
1165 kaweth->rx_buf = usb_buffer_alloc( kaweth->dev,
1166 KAWETH_BUF_SIZE,
1167 GFP_KERNEL,
1168 &kaweth->rxbufferhandle);
1169 if (!kaweth->rx_buf)
1170 goto err_all_but_rxbuf;
1171
1172 memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr));
1173 memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr,
1174 sizeof(kaweth->configuration.hw_addr));
1175
321ea8b2 1176 netdev->netdev_ops = &kaweth_netdev_ops;
1da177e4 1177 netdev->watchdog_timeo = KAWETH_TX_TIMEOUT;
1da177e4
LT		 1178 netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size);
1179 SET_ETHTOOL_OPS(netdev, &ops);
1180
1181 /* kaweth is zeroed as part of alloc_netdev */
c4028958 1182 INIT_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl);
1da177e4
LT		 1183 usb_set_intfdata(intf, kaweth);
1184
1185#if 0
1186// dma_supported() is deeply broken on almost all architectures
1187 if (dma_supported (&intf->dev, 0xffffffffffffffffULL))
1188 kaweth->net->features |= NETIF_F_HIGHDMA;
1189#endif
1190
1191 SET_NETDEV_DEV(netdev, &intf->dev);
1192 if (register_netdev(netdev) != 0) {
fbe2bafc 1193 err("Error registering netdev.");
1da177e4
LT		 1194 goto err_intfdata;
1195 }
1196
880c9c66
GKH		 1197 dev_info(&intf->dev, "kaweth interface created at %s\n",
1198 kaweth->net->name);
1da177e4 1199
fbe2bafc 1200 dbg("Kaweth probe returning.");
1da177e4
LT		 1201
1202 return 0;
1203
1204err_intfdata:
1205 usb_set_intfdata(intf, NULL);
1206 usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1207err_all_but_rxbuf:
1208 usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1209err_tx_and_rx_and_irq:
1210 usb_free_urb(kaweth->irq_urb);
1211err_tx_and_rx:
1212 usb_free_urb(kaweth->rx_urb);
1213err_only_tx:
1214 usb_free_urb(kaweth->tx_urb);
1215err_free_netdev:
1216 free_netdev(netdev);
1217
1218 return -EIO;
1219}
1220
1221/****************************************************************
1222 * kaweth_disconnect
1223 ****************************************************************/
1224static void kaweth_disconnect(struct usb_interface *intf)
1225{
1226 struct kaweth_device *kaweth = usb_get_intfdata(intf);
1227 struct net_device *netdev;
1228
880c9c66 1229 dev_info(&intf->dev, "Unregistering\n");
1da177e4
LT		 1230
1231 usb_set_intfdata(intf, NULL);
1232 if (!kaweth) {
4dc89948 1233 dev_warn(&intf->dev, "unregistering non-existant device\n");
1da177e4
LT		 1234 return;
1235 }
1236 netdev = kaweth->net;
1da177e4 1237
fbe2bafc 1238 dbg("Unregistering net device");
1da177e4
LT		 1239 unregister_netdev(netdev);
1240
1241 usb_free_urb(kaweth->rx_urb);
1242 usb_free_urb(kaweth->tx_urb);
1243 usb_free_urb(kaweth->irq_urb);
1244
1245 usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1246 usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1247
1248 free_netdev(netdev);
1249}
1250
1251
1252// FIXME this completion stuff is a modified clone of
1253// an OLD version of some stuff in usb.c ...
1254struct usb_api_data {
1255 wait_queue_head_t wqh;
1256 int done;
1257};
1258
1259/*-------------------------------------------------------------------*
1260 * completion handler for compatibility wrappers (sync control/bulk) *
1261 *-------------------------------------------------------------------*/
7d12e780 1262static void usb_api_blocking_completion(struct urb *urb)
1da177e4
LT		 1263{
1264 struct usb_api_data *awd = (struct usb_api_data *)urb->context;
1265
1266 awd->done=1;
1267 wake_up(&awd->wqh);
1268}
1269
1270/*-------------------------------------------------------------------*
1271 * COMPATIBILITY STUFF *
1272 *-------------------------------------------------------------------*/
1273
1274// Starts urb and waits for completion or timeout
1275static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length)
1276{
1277 struct usb_api_data awd;
1278 int status;
1279
1280 init_waitqueue_head(&awd.wqh);
1281 awd.done = 0;
1282
1283 urb->context = &awd;
1284 status = usb_submit_urb(urb, GFP_NOIO);
1285 if (status) {
1286 // something went wrong
1287 usb_free_urb(urb);
1288 return status;
1289 }
1290
1291 if (!wait_event_timeout(awd.wqh, awd.done, timeout)) {
1292 // timeout
4dc89948 1293 dev_warn(&urb->dev->dev, "usb_control/bulk_msg: timeout\n");
1da177e4
LT		 1294 usb_kill_urb(urb); // remove urb safely
1295 status = -ETIMEDOUT;
1296 }
1297 else {
1298 status = urb->status;
1299 }
1300
1301 if (actual_length) {
1302 *actual_length = urb->actual_length;
1303 }
1304
1305 usb_free_urb(urb);
1306 return status;
1307}
1308
1309/*-------------------------------------------------------------------*/
1310// returns status (negative) or length (positive)
1311static int kaweth_internal_control_msg(struct usb_device *usb_dev,
1312 unsigned int pipe,
1313 struct usb_ctrlrequest *cmd, void *data,
1314 int len, int timeout)
1315{
1316 struct urb *urb;
1317 int retv;
b98b98f9 1318 int length = 0; /* shut up GCC */
1da177e4
LT		 1319
1320 urb = usb_alloc_urb(0, GFP_NOIO);
1321 if (!urb)
1322 return -ENOMEM;
1323
1324 usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data,
1325 len, usb_api_blocking_completion, NULL);
1326
1327 retv = usb_start_wait_urb(urb, timeout, &length);
1328 if (retv < 0) {
1329 return retv;
1330 }
1331 else {
1332 return length;
1333 }
1334}
1335
1336
1337/****************************************************************
1338 * kaweth_init
1339 ****************************************************************/
1340static int __init kaweth_init(void)
1341{
fbe2bafc 1342 dbg("Driver loading");
1da177e4
LT		 1343 return usb_register(&kaweth_driver);
1344}
1345
1346/****************************************************************
1347 * kaweth_exit
1348 ****************************************************************/
1349static void __exit kaweth_exit(void)
1350{
1351 usb_deregister(&kaweth_driver);
1352}
1353
1354module_init(kaweth_init);
1355module_exit(kaweth_exit);
1356
1357
1358
1359
1360
1361
1362
1363
1364
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