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MOXA linux-2.6.x / linux-2.6.9-uc0 from sdlinux-moxaart.tgz
[linux-2.6.9-moxart.git] / drivers / usb / net / kaweth.c
blob40e921ade8c8adb5d285e1ab60c2338875fd0347
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:
34 * Fix in_interrupt() problem
35 * Develop test procedures for USB net interfaces
36 * Run test procedures
37 * Fix bugs from previous two steps
38 * Snoop other OSs for any tricks we're not doing
39 * SMP locking
40 * Reduce arbitrary timeouts
41 * Smart multicast support
42 * Temporary MAC change support
43 * Tunable SOFs parameter - ioctl()?
44 * Ethernet stats collection
45 * Code formatting improvements
46 */
47
48 #include <linux/module.h>
49 #include <linux/sched.h>
50 #include <linux/slab.h>
51 #include <linux/string.h>
52 #include <linux/init.h>
53 #include <linux/delay.h>
54 #include <linux/netdevice.h>
55 #include <linux/etherdevice.h>
56 #include <linux/usb.h>
57 #include <linux/types.h>
58 #include <linux/ethtool.h>
59 #include <linux/pci.h>
60 #include <linux/dma-mapping.h>
61 #include <asm/uaccess.h>
62 #include <asm/semaphore.h>
63 #include <asm/byteorder.h>
64
65 #undef DEBUG
66
67 #ifdef DEBUG
68 #define kaweth_dbg(format, arg...) printk(KERN_DEBUG __FILE__ ": " format "\n" ,##arg)
69 #else
70 #define kaweth_dbg(format, arg...) do {} while (0)
71 #endif
72 #define kaweth_err(format, arg...) printk(KERN_ERR __FILE__ ": " format "\n" ,##arg)
73 #define kaweth_info(format, arg...) printk(KERN_INFO __FILE__ ": " format "\n" , ##arg)
74 #define kaweth_warn(format, arg...) printk(KERN_WARNING __FILE__ ": " format "\n" , ##arg)
75
76
77 #include "kawethfw.h"
78
79 #define KAWETH_MTU 1514
80 #define KAWETH_BUF_SIZE 1664
81 #define KAWETH_TX_TIMEOUT (5 * HZ)
82 #define KAWETH_SCRATCH_SIZE 32
83 #define KAWETH_FIRMWARE_BUF_SIZE 4096
84 #define KAWETH_CONTROL_TIMEOUT (30 * HZ)
85
86 #define KAWETH_STATUS_BROKEN 0x0000001
87 #define KAWETH_STATUS_CLOSING 0x0000002
88
89 #define KAWETH_PACKET_FILTER_PROMISCUOUS 0x01
90 #define KAWETH_PACKET_FILTER_ALL_MULTICAST 0x02
91 #define KAWETH_PACKET_FILTER_DIRECTED 0x04
92 #define KAWETH_PACKET_FILTER_BROADCAST 0x08
93 #define KAWETH_PACKET_FILTER_MULTICAST 0x10
94
95 /* Table 7 */
96 #define KAWETH_COMMAND_GET_ETHERNET_DESC 0x00
97 #define KAWETH_COMMAND_MULTICAST_FILTERS 0x01
98 #define KAWETH_COMMAND_SET_PACKET_FILTER 0x02
99 #define KAWETH_COMMAND_STATISTICS 0x03
100 #define KAWETH_COMMAND_SET_TEMP_MAC 0x06
101 #define KAWETH_COMMAND_GET_TEMP_MAC 0x07
102 #define KAWETH_COMMAND_SET_URB_SIZE 0x08
103 #define KAWETH_COMMAND_SET_SOFS_WAIT 0x09
104 #define KAWETH_COMMAND_SCAN 0xFF
105
106 #define KAWETH_SOFS_TO_WAIT 0x05
107
108 #define INTBUFFERSIZE 4
109
110 #define STATE_OFFSET 0
111 #define STATE_MASK 0x40
112 #define STATE_SHIFT 5
113
114
115 MODULE_AUTHOR("Michael Zappe <zapman@interlan.net>, Stephane Alnet <stephane@u-picardie.fr>, Brad Hards <bhards@bigpond.net.au> and Oliver Neukum <oliver@neukum.org>");
116 MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver");
117 MODULE_LICENSE("GPL");
118
119 static const char driver_name[] = "kaweth";
120
121 static int kaweth_probe(
122 struct usb_interface *intf,
123 const struct usb_device_id *id /* from id_table */
124 );
125 static void kaweth_disconnect(struct usb_interface *intf);
126 static int kaweth_internal_control_msg(struct usb_device *usb_dev,
127 unsigned int pipe,
128 struct usb_ctrlrequest *cmd, void *data,
129 int len, int timeout);
130
131 /****************************************************************
132 * usb_device_id
133 ****************************************************************/
134 static struct usb_device_id usb_klsi_table[] = {
135 { USB_DEVICE(0x03e8, 0x0008) }, /* AOX Endpoints USB Ethernet */
136 { USB_DEVICE(0x04bb, 0x0901) }, /* I-O DATA USB-ET/T */
137 { USB_DEVICE(0x0506, 0x03e8) }, /* 3Com 3C19250 */
138 { USB_DEVICE(0x0506, 0x11f8) }, /* 3Com 3C460 */
139 { USB_DEVICE(0x0557, 0x2002) }, /* ATEN USB Ethernet */
140 { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */
141 { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */
142 { USB_DEVICE(0x0565, 0x0003) }, /* Optus@Home UEP1045A */
143 { USB_DEVICE(0x0565, 0x0005) }, /* Peracom Enet2 */
144 { USB_DEVICE(0x05e9, 0x0008) }, /* KLSI KL5KUSB101B */
145 { USB_DEVICE(0x05e9, 0x0009) }, /* KLSI KL5KUSB101B (Board change) */
146 { USB_DEVICE(0x066b, 0x2202) }, /* Linksys USB10T */
147 { USB_DEVICE(0x06e1, 0x0008) }, /* ADS USB-10BT */
148 { USB_DEVICE(0x06e1, 0x0009) }, /* ADS USB-10BT */
149 { USB_DEVICE(0x0707, 0x0100) }, /* SMC 2202USB */
150 { USB_DEVICE(0x07aa, 0x0001) }, /* Correga K.K. */
151 { USB_DEVICE(0x07b8, 0x4000) }, /* D-Link DU-E10 */
152 { USB_DEVICE(0x0846, 0x1001) }, /* NetGear EA-101 */
153 { USB_DEVICE(0x0846, 0x1002) }, /* NetGear EA-101 */
154 { USB_DEVICE(0x085a, 0x0008) }, /* PortGear Ethernet Adapter */
155 { USB_DEVICE(0x085a, 0x0009) }, /* PortGear Ethernet Adapter */
156 { USB_DEVICE(0x087d, 0x5704) }, /* Jaton USB Ethernet Device Adapter */
157 { USB_DEVICE(0x0951, 0x0008) }, /* Kingston Technology USB Ethernet Adapter */
158 { USB_DEVICE(0x095a, 0x3003) }, /* Portsmith Express Ethernet Adapter */
159 { USB_DEVICE(0x10bd, 0x1427) }, /* ASANTE USB To Ethernet Adapter */
160 { USB_DEVICE(0x1342, 0x0204) }, /* Mobility USB-Ethernet Adapter */
161 { USB_DEVICE(0x13d2, 0x0400) }, /* Shark Pocket Adapter */
162 { USB_DEVICE(0x1485, 0x0001) }, /* Silicom U2E */
163 { USB_DEVICE(0x1645, 0x0005) }, /* Entrega E45 */
164 { USB_DEVICE(0x1645, 0x0008) }, /* Entrega USB Ethernet Adapter */
165 { USB_DEVICE(0x1645, 0x8005) }, /* PortGear Ethernet Adapter */
166 { USB_DEVICE(0x2001, 0x4000) }, /* D-link DSB-650C */
167 {} /* Null terminator */
168 };
169
170 MODULE_DEVICE_TABLE (usb, usb_klsi_table);
171
172 /****************************************************************
173 * kaweth_driver
174 ****************************************************************/
175 static struct usb_driver kaweth_driver = {
176 .owner = THIS_MODULE,
177 .name = driver_name,
178 .probe = kaweth_probe,
179 .disconnect = kaweth_disconnect,
180 .id_table = usb_klsi_table,
181 };
182
183 typedef __u8 eth_addr_t[6];
184
185 /****************************************************************
186 * usb_eth_dev
187 ****************************************************************/
188 struct 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 ****************************************************************/
199 struct 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 ****************************************************************/
214 struct kaweth_device
215 {
216 spinlock_t device_lock;
217
218 __u32 status;
219 int end;
220 int removed;
221 int suspend_lowmem_rx;
222 int suspend_lowmem_ctrl;
223 int linkstate;
224 struct work_struct lowmem_work;
225
226 struct usb_device *dev;
227 struct net_device *net;
228 wait_queue_head_t term_wait;
229
230 struct urb *rx_urb;
231 struct urb *tx_urb;
232 struct urb *irq_urb;
233
234 dma_addr_t intbufferhandle;
235 __u8 *intbuffer;
236 dma_addr_t rxbufferhandle;
237 __u8 *rx_buf;
238
239
240 struct sk_buff *tx_skb;
241
242 __u8 *firmware_buf;
243 __u8 scratch[KAWETH_SCRATCH_SIZE];
244 __u16 packet_filter_bitmap;
245
246 struct kaweth_ethernet_configuration configuration;
247
248 struct net_device_stats stats;
249 } __attribute__ ((packed));
250
251
252 /****************************************************************
253 * kaweth_control
254 ****************************************************************/
255 static 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
267 kaweth_dbg("kaweth_control()");
268
269 if(in_interrupt()) {
270 kaweth_dbg("in_interrupt()");
271 return -EBUSY;
272 }
273
274 dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
275
276 if (!dr) {
277 kaweth_dbg("kmalloc() failed");
278 return -ENOMEM;
279 }
280
281 dr->bRequestType= requesttype;
282 dr->bRequest = request;
283 dr->wValue = cpu_to_le16p(&value);
284 dr->wIndex = cpu_to_le16p(&index);
285 dr->wLength = cpu_to_le16p(&size);
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 ****************************************************************/
298 static int kaweth_read_configuration(struct kaweth_device *kaweth)
299 {
300 int retval;
301
302 kaweth_dbg("Reading kaweth configuration");
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 ****************************************************************/
320 static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size)
321 {
322 int retval;
323
324 kaweth_dbg("Setting URB size to %d", (unsigned)urb_size);
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 ****************************************************************/
342 static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait)
343 {
344 int retval;
345
346 kaweth_dbg("Set SOFS wait to %d", (unsigned)sofs_wait);
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 ****************************************************************/
364 static int kaweth_set_receive_filter(struct kaweth_device *kaweth,
365 __u16 receive_filter)
366 {
367 int retval;
368
369 kaweth_dbg("Set receive filter to %d", (unsigned)receive_filter);
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 ****************************************************************/
387 static int kaweth_download_firmware(struct kaweth_device *kaweth,
388 __u8 *data,
389 __u16 data_len,
390 __u8 interrupt,
391 __u8 type)
392 {
393 if(data_len > KAWETH_FIRMWARE_BUF_SIZE) {
394 kaweth_err("Firmware too big: %d", data_len);
395 return -ENOSPC;
396 }
397
398 memcpy(kaweth->firmware_buf, data, data_len);
399
400 kaweth->firmware_buf[2] = (data_len & 0xFF) - 7;
401 kaweth->firmware_buf[3] = data_len >> 8;
402 kaweth->firmware_buf[4] = type;
403 kaweth->firmware_buf[5] = interrupt;
404
405 kaweth_dbg("High: %i, Low:%i", kaweth->firmware_buf[3],
406 kaweth->firmware_buf[2]);
407
408 kaweth_dbg("Downloading firmware at %p to kaweth device at %p",
409 data,
410 kaweth);
411 kaweth_dbg("Firmware length: %d", data_len);
412
413 return kaweth_control(kaweth,
414 usb_sndctrlpipe(kaweth->dev, 0),
415 KAWETH_COMMAND_SCAN,
416 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
417 0,
418 0,
419 (void *)kaweth->firmware_buf,
420 data_len,
421 KAWETH_CONTROL_TIMEOUT);
422 }
423
424 /****************************************************************
425 * kaweth_trigger_firmware
426 ****************************************************************/
427 static int kaweth_trigger_firmware(struct kaweth_device *kaweth,
428 __u8 interrupt)
429 {
430 kaweth->firmware_buf[0] = 0xB6;
431 kaweth->firmware_buf[1] = 0xC3;
432 kaweth->firmware_buf[2] = 0x01;
433 kaweth->firmware_buf[3] = 0x00;
434 kaweth->firmware_buf[4] = 0x06;
435 kaweth->firmware_buf[5] = interrupt;
436 kaweth->firmware_buf[6] = 0x00;
437 kaweth->firmware_buf[7] = 0x00;
438
439 kaweth_dbg("Triggering firmware");
440
441 return kaweth_control(kaweth,
442 usb_sndctrlpipe(kaweth->dev, 0),
443 KAWETH_COMMAND_SCAN,
444 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
445 0,
446 0,
447 (void *)kaweth->firmware_buf,
448 8,
449 KAWETH_CONTROL_TIMEOUT);
450 }
451
452 /****************************************************************
453 * kaweth_reset
454 ****************************************************************/
455 static int kaweth_reset(struct kaweth_device *kaweth)
456 {
457 int result;
458
459 kaweth_dbg("kaweth_reset(%p)", kaweth);
460 result = kaweth_control(kaweth,
461 usb_sndctrlpipe(kaweth->dev, 0),
462 USB_REQ_SET_CONFIGURATION,
463 0,
464 kaweth->dev->config[0].desc.bConfigurationValue,
465 0,
466 NULL,
467 0,
468 KAWETH_CONTROL_TIMEOUT);
469
470 udelay(10000);
471
472 kaweth_dbg("kaweth_reset() returns %d.",result);
473
474 return result;
475 }
476
477 static void kaweth_usb_receive(struct urb *, struct pt_regs *regs);
478 static int kaweth_resubmit_rx_urb(struct kaweth_device *, int);
479
480 /****************************************************************
481 int_callback
482 *****************************************************************/
483
484 static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, int mf)
485 {
486 int status;
487
488 status = usb_submit_urb (kaweth->irq_urb, mf);
489 if (unlikely(status == -ENOMEM)) {
490 kaweth->suspend_lowmem_ctrl = 1;
491 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
492 } else {
493 kaweth->suspend_lowmem_ctrl = 0;
494 }
495
496 if (status)
497 err ("can't resubmit intr, %s-%s, status %d",
498 kaweth->dev->bus->bus_name,
499 kaweth->dev->devpath, status);
500 }
501
502 static void int_callback(struct urb *u, struct pt_regs *regs)
503 {
504 struct kaweth_device *kaweth = u->context;
505 int act_state;
506
507 switch (u->status) {
508 case 0: /* success */
509 break;
510 case -ECONNRESET: /* unlink */
511 case -ENOENT:
512 case -ESHUTDOWN:
513 return;
514 /* -EPIPE: should clear the halt */
515 default: /* error */
516 goto resubmit;
517 }
518
519 /* we check the link state to report changes */
520 if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) {
521 if (!act_state)
522 netif_carrier_on(kaweth->net);
523 else
524 netif_carrier_off(kaweth->net);
525
526 kaweth->linkstate = act_state;
527 }
528 resubmit:
529 kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC);
530 }
531
532 static void kaweth_resubmit_tl(void *d)
533 {
534 struct kaweth_device *kaweth = (struct kaweth_device *)d;
535
536 if (kaweth->status | KAWETH_STATUS_CLOSING)
537 return;
538
539 if (kaweth->suspend_lowmem_rx)
540 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
541
542 if (kaweth->suspend_lowmem_ctrl)
543 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
544 }
545
546
547 /****************************************************************
548 * kaweth_resubmit_rx_urb
549 ****************************************************************/
550 static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth,
551 int mem_flags)
552 {
553 int result;
554
555 usb_fill_bulk_urb(kaweth->rx_urb,
556 kaweth->dev,
557 usb_rcvbulkpipe(kaweth->dev, 1),
558 kaweth->rx_buf,
559 KAWETH_BUF_SIZE,
560 kaweth_usb_receive,
561 kaweth);
562 kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
563 kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle;
564
565 if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) {
566 if (result == -ENOMEM) {
567 kaweth->suspend_lowmem_rx = 1;
568 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
569 }
570 kaweth_err("resubmitting rx_urb %d failed", result);
571 } else {
572 kaweth->suspend_lowmem_rx = 0;
573 }
574
575 return result;
576 }
577
578 static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth);
579
580 /****************************************************************
581 * kaweth_usb_receive
582 ****************************************************************/
583 static void kaweth_usb_receive(struct urb *urb, struct pt_regs *regs)
584 {
585 struct kaweth_device *kaweth = urb->context;
586 struct net_device *net = kaweth->net;
587
588 int count = urb->actual_length;
589 int count2 = urb->transfer_buffer_length;
590
591 __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf);
592
593 struct sk_buff *skb;
594
595 if(unlikely(urb->status == -ECONNRESET || urb->status == -ECONNABORTED || urb->status == -ESHUTDOWN))
596 /* we are killed - set a flag and wake the disconnect handler */
597 {
598 kaweth->end = 1;
599 wake_up(&kaweth->term_wait);
600 return;
601 }
602
603 if (kaweth->status & KAWETH_STATUS_CLOSING)
604 return;
605
606 if(urb->status && urb->status != -EREMOTEIO && count != 1) {
607 kaweth_err("%s RX status: %d count: %d packet_len: %d",
608 net->name,
609 urb->status,
610 count,
611 (int)pkt_len);
612 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
613 return;
614 }
615
616 if(kaweth->net && (count > 2)) {
617 if(pkt_len > (count - 2)) {
618 kaweth_err("Packet length too long for USB frame (pkt_len: %x, count: %x)",pkt_len, count);
619 kaweth_err("Packet len & 2047: %x", pkt_len & 2047);
620 kaweth_err("Count 2: %x", count2);
621 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
622 return;
623 }
624
625 if(!(skb = dev_alloc_skb(pkt_len+2))) {
626 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
627 return;
628 }
629
630 skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
631
632 skb->dev = net;
633
634 eth_copy_and_sum(skb, kaweth->rx_buf + 2, pkt_len, 0);
635
636 skb_put(skb, pkt_len);
637
638 skb->protocol = eth_type_trans(skb, net);
639
640 netif_rx(skb);
641
642 kaweth->stats.rx_packets++;
643 kaweth->stats.rx_bytes += pkt_len;
644 }
645
646 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
647 }
648
649 /****************************************************************
650 * kaweth_open
651 ****************************************************************/
652 static int kaweth_open(struct net_device *net)
653 {
654 struct kaweth_device *kaweth = (struct kaweth_device *)net->priv;
655 int res;
656
657 kaweth_dbg("Opening network device.");
658
659 res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL);
660 if (res)
661 return -EIO;
662
663 usb_fill_int_urb(
664 kaweth->irq_urb,
665 kaweth->dev,
666 usb_rcvintpipe(kaweth->dev, 3),
667 kaweth->intbuffer,
668 INTBUFFERSIZE,
669 int_callback,
670 kaweth,
671 8);
672 kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle;
673 kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
674
675 res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL);
676 if (res) {
677 usb_unlink_urb(kaweth->rx_urb);
678 return -EIO;
679 }
680
681 netif_start_queue(net);
682
683 kaweth_async_set_rx_mode(kaweth);
684 return 0;
685 }
686
687 /****************************************************************
688 * kaweth_close
689 ****************************************************************/
690 static int kaweth_close(struct net_device *net)
691 {
692 struct kaweth_device *kaweth = net->priv;
693
694 netif_stop_queue(net);
695
696 kaweth->status |= KAWETH_STATUS_CLOSING;
697
698 usb_unlink_urb(kaweth->irq_urb);
699 usb_unlink_urb(kaweth->rx_urb);
700
701 flush_scheduled_work();
702
703 /* a scheduled work may have resubmitted,
704 we hit them again */
705 usb_unlink_urb(kaweth->irq_urb);
706 usb_unlink_urb(kaweth->rx_urb);
707
708 kaweth->status &= ~KAWETH_STATUS_CLOSING;
709
710 return 0;
711 }
712
713 static int netdev_ethtool_ioctl(struct net_device *dev, void __user *useraddr)
714 {
715 u32 ethcmd;
716
717 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
718 return -EFAULT;
719
720 switch (ethcmd) {
721 case ETHTOOL_GDRVINFO: {
722 struct ethtool_drvinfo info = {ETHTOOL_GDRVINFO};
723 strlcpy(info.driver, driver_name, sizeof(info.driver));
724 if (copy_to_user(useraddr, &info, sizeof(info)))
725 return -EFAULT;
726 return 0;
727 }
728 }
729
730 return -EOPNOTSUPP;
731 }
732
733 /****************************************************************
734 * kaweth_ioctl
735 ****************************************************************/
736 static int kaweth_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
737 {
738 switch (cmd) {
739 case SIOCETHTOOL:
740 return netdev_ethtool_ioctl(net, rq->ifr_data);
741 }
742 return -EOPNOTSUPP;
743 }
744
745 /****************************************************************
746 * kaweth_usb_transmit_complete
747 ****************************************************************/
748 static void kaweth_usb_transmit_complete(struct urb *urb, struct pt_regs *regs)
749 {
750 struct kaweth_device *kaweth = urb->context;
751 struct sk_buff *skb = kaweth->tx_skb;
752
753 if (unlikely(urb->status != 0))
754 kaweth_dbg("%s: TX status %d.", kaweth->net->name, urb->status);
755
756 netif_wake_queue(kaweth->net);
757 dev_kfree_skb_irq(skb);
758 }
759
760 /****************************************************************
761 * kaweth_start_xmit
762 ****************************************************************/
763 static int kaweth_start_xmit(struct sk_buff *skb, struct net_device *net)
764 {
765 struct kaweth_device *kaweth = net->priv;
766 __le16 *private_header;
767
768 int res;
769
770 spin_lock(&kaweth->device_lock);
771
772 if (kaweth->removed) {
773 /* our device is undergoing disconnection - we bail out */
774 spin_unlock(&kaweth->device_lock);
775 dev_kfree_skb_irq(skb);
776 return 0;
777 }
778
779 kaweth_async_set_rx_mode(kaweth);
780 netif_stop_queue(net);
781
782 /* We now decide whether we can put our special header into the sk_buff */
783 if (skb_cloned(skb) || skb_headroom(skb) < 2) {
784 /* no such luck - we make our own */
785 struct sk_buff *copied_skb;
786 copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC);
787 dev_kfree_skb_irq(skb);
788 skb = copied_skb;
789 if (!copied_skb) {
790 kaweth->stats.tx_errors++;
791 netif_start_queue(net);
792 spin_unlock(&kaweth->device_lock);
793 return 0;
794 }
795 }
796
797 private_header = (__le16 *)__skb_push(skb, 2);
798 *private_header = cpu_to_le16(skb->len-2);
799 kaweth->tx_skb = skb;
800
801 usb_fill_bulk_urb(kaweth->tx_urb,
802 kaweth->dev,
803 usb_sndbulkpipe(kaweth->dev, 2),
804 private_header,
805 skb->len,
806 kaweth_usb_transmit_complete,
807 kaweth);
808 kaweth->end = 0;
809 kaweth->tx_urb->transfer_flags |= URB_ASYNC_UNLINK;
810
811 if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC)))
812 {
813 kaweth_warn("kaweth failed tx_urb %d", res);
814 kaweth->stats.tx_errors++;
815
816 netif_start_queue(net);
817 dev_kfree_skb_irq(skb);
818 }
819 else
820 {
821 kaweth->stats.tx_packets++;
822 kaweth->stats.tx_bytes += skb->len;
823 net->trans_start = jiffies;
824 }
825
826 spin_unlock(&kaweth->device_lock);
827
828 return 0;
829 }
830
831 /****************************************************************
832 * kaweth_set_rx_mode
833 ****************************************************************/
834 static void kaweth_set_rx_mode(struct net_device *net)
835 {
836 struct kaweth_device *kaweth = net->priv;
837
838 __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED |
839 KAWETH_PACKET_FILTER_BROADCAST |
840 KAWETH_PACKET_FILTER_MULTICAST;
841
842 kaweth_dbg("Setting Rx mode to %d", packet_filter_bitmap);
843
844 netif_stop_queue(net);
845
846 if (net->flags & IFF_PROMISC) {
847 packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS;
848 }
849 else if ((net->mc_count) || (net->flags & IFF_ALLMULTI)) {
850 packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST;
851 }
852
853 kaweth->packet_filter_bitmap = packet_filter_bitmap;
854 netif_wake_queue(net);
855 }
856
857 /****************************************************************
858 * kaweth_async_set_rx_mode
859 ****************************************************************/
860 static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth)
861 {
862 __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap;
863 kaweth->packet_filter_bitmap = 0;
864 if (packet_filter_bitmap == 0)
865 return;
866
867 {
868 int result;
869 result = kaweth_control(kaweth,
870 usb_sndctrlpipe(kaweth->dev, 0),
871 KAWETH_COMMAND_SET_PACKET_FILTER,
872 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
873 packet_filter_bitmap,
874 0,
875 (void *)&kaweth->scratch,
876 0,
877 KAWETH_CONTROL_TIMEOUT);
878
879 if(result < 0) {
880 kaweth_err("Failed to set Rx mode: %d", result);
881 }
882 else {
883 kaweth_dbg("Set Rx mode to %d", packet_filter_bitmap);
884 }
885 }
886 }
887
888 /****************************************************************
889 * kaweth_netdev_stats
890 ****************************************************************/
891 static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev)
892 {
893 return &((struct kaweth_device *)dev->priv)->stats;
894 }
895
896 /****************************************************************
897 * kaweth_tx_timeout
898 ****************************************************************/
899 static void kaweth_tx_timeout(struct net_device *net)
900 {
901 struct kaweth_device *kaweth = net->priv;
902
903 kaweth_warn("%s: Tx timed out. Resetting.", net->name);
904 kaweth->stats.tx_errors++;
905 net->trans_start = jiffies;
906
907 usb_unlink_urb(kaweth->tx_urb);
908 }
909
910 /****************************************************************
911 * kaweth_probe
912 ****************************************************************/
913 static int kaweth_probe(
914 struct usb_interface *intf,
915 const struct usb_device_id *id /* from id_table */
916 )
917 {
918 struct usb_device *dev = interface_to_usbdev(intf);
919 struct kaweth_device *kaweth;
920 struct net_device *netdev;
921 const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
922 int result = 0;
923
924 kaweth_dbg("Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x",
925 dev->devnum,
926 (int)dev->descriptor.idVendor,
927 (int)dev->descriptor.idProduct,
928 (int)dev->descriptor.bcdDevice);
929
930 kaweth_dbg("Device at %p", dev);
931
932 kaweth_dbg("Descriptor length: %x type: %x",
933 (int)dev->descriptor.bLength,
934 (int)dev->descriptor.bDescriptorType);
935
936 if(!(kaweth = kmalloc(sizeof(struct kaweth_device), GFP_KERNEL)))
937 return -ENOMEM;
938
939 memset(kaweth, 0, sizeof(struct kaweth_device));
940
941 kaweth->dev = dev;
942 spin_lock_init(&kaweth->device_lock);
943 init_waitqueue_head(&kaweth->term_wait);
944
945 kaweth_dbg("Resetting.");
946
947 kaweth_reset(kaweth);
948
949 /*
950 * If high byte of bcdDevice is nonzero, firmware is already
951 * downloaded. Don't try to do it again, or we'll hang the device.
952 */
953
954 if (dev->descriptor.bcdDevice >> 8) {
955 kaweth_info("Firmware present in device.");
956 } else {
957 /* Download the firmware */
958 kaweth_info("Downloading firmware...");
959 kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL);
960 if ((result = kaweth_download_firmware(kaweth,
961 kaweth_new_code,
962 len_kaweth_new_code,
963 100,
964 2)) < 0) {
965 kaweth_err("Error downloading firmware (%d)", result);
966 free_page((unsigned long)kaweth->firmware_buf);
967 kfree(kaweth);
968 return -EIO;
969 }
970
971 if ((result = kaweth_download_firmware(kaweth,
972 kaweth_new_code_fix,
973 len_kaweth_new_code_fix,
974 100,
975 3)) < 0) {
976 kaweth_err("Error downloading firmware fix (%d)", result);
977 free_page((unsigned long)kaweth->firmware_buf);
978 kfree(kaweth);
979 return -EIO;
980 }
981
982 if ((result = kaweth_download_firmware(kaweth,
983 kaweth_trigger_code,
984 len_kaweth_trigger_code,
985 126,
986 2)) < 0) {
987 kaweth_err("Error downloading trigger code (%d)", result);
988 free_page((unsigned long)kaweth->firmware_buf);
989 kfree(kaweth);
990 return -EIO;
991 }
992
993 if ((result = kaweth_download_firmware(kaweth,
994 kaweth_trigger_code_fix,
995 len_kaweth_trigger_code_fix,
996 126,
997 3)) < 0) {
998 kaweth_err("Error downloading trigger code fix (%d)", result);
999 free_page((unsigned long)kaweth->firmware_buf);
1000 kfree(kaweth);
1001 return -EIO;
1002 }
1003
1004
1005 if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
1006 kaweth_err("Error triggering firmware (%d)", result);
1007 free_page((unsigned long)kaweth->firmware_buf);
1008 kfree(kaweth);
1009 return -EIO;
1010 }
1011
1012 /* Device will now disappear for a moment... */
1013 kaweth_info("Firmware loaded. I'll be back...");
1014 free_page((unsigned long)kaweth->firmware_buf);
1015 kfree(kaweth);
1016 return -EIO;
1017 }
1018
1019 result = kaweth_read_configuration(kaweth);
1020
1021 if(result < 0) {
1022 kaweth_err("Error reading configuration (%d), no net device created", result);
1023 kfree(kaweth);
1024 return -EIO;
1025 }
1026
1027 kaweth_info("Statistics collection: %x", kaweth->configuration.statistics_mask);
1028 kaweth_info("Multicast filter limit: %x", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
1029 kaweth_info("MTU: %d", le16_to_cpu(kaweth->configuration.segment_size));
1030 kaweth_info("Read MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
1031 (int)kaweth->configuration.hw_addr[0],
1032 (int)kaweth->configuration.hw_addr[1],
1033 (int)kaweth->configuration.hw_addr[2],
1034 (int)kaweth->configuration.hw_addr[3],
1035 (int)kaweth->configuration.hw_addr[4],
1036 (int)kaweth->configuration.hw_addr[5]);
1037
1038 if(!memcmp(&kaweth->configuration.hw_addr,
1039 &bcast_addr,
1040 sizeof(bcast_addr))) {
1041 kaweth_err("Firmware not functioning properly, no net device created");
1042 kfree(kaweth);
1043 return -EIO;
1044 }
1045
1046 if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
1047 kaweth_dbg("Error setting URB size");
1048 goto err_no_netdev;
1049 }
1050
1051 if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
1052 kaweth_err("Error setting SOFS wait");
1053 goto err_no_netdev;
1054 }
1055
1056 result = kaweth_set_receive_filter(kaweth,
1057 KAWETH_PACKET_FILTER_DIRECTED |
1058 KAWETH_PACKET_FILTER_BROADCAST |
1059 KAWETH_PACKET_FILTER_MULTICAST);
1060
1061 if(result < 0) {
1062 kaweth_err("Error setting receive filter");
1063 kfree(kaweth);
1064 return -EIO;
1065 }
1066
1067 kaweth_dbg("Initializing net device.");
1068
1069 if (!(netdev = alloc_etherdev(0))) {
1070 kfree(kaweth);
1071 return -ENOMEM;
1072 }
1073
1074 kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1075 if (!kaweth->tx_urb)
1076 goto err_no_urb;
1077 kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1078 if (!kaweth->rx_urb)
1079 goto err_only_tx;
1080 kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
1081 if (!kaweth->irq_urb)
1082 goto err_tx_and_rx;
1083
1084 kaweth->intbuffer = usb_buffer_alloc( kaweth->dev,
1085 INTBUFFERSIZE,
1086 GFP_KERNEL,
1087 &kaweth->intbufferhandle);
1088 if (!kaweth->intbuffer)
1089 goto err_tx_and_rx_and_irq;
1090 kaweth->rx_buf = usb_buffer_alloc( kaweth->dev,
1091 KAWETH_BUF_SIZE,
1092 GFP_KERNEL,
1093 &kaweth->rxbufferhandle);
1094 if (!kaweth->rx_buf)
1095 goto err_all_but_rxbuf;
1096
1097 kaweth->net = netdev;
1098 memcpy(kaweth->net->broadcast, &bcast_addr, sizeof(bcast_addr));
1099 memcpy(kaweth->net->dev_addr,
1100 &kaweth->configuration.hw_addr,
1101 sizeof(kaweth->configuration.hw_addr));
1102
1103 kaweth->net->priv = kaweth;
1104 kaweth->net->open = kaweth_open;
1105 kaweth->net->stop = kaweth_close;
1106
1107 kaweth->net->watchdog_timeo = KAWETH_TX_TIMEOUT;
1108 kaweth->net->tx_timeout = kaweth_tx_timeout;
1109
1110 kaweth->net->do_ioctl = kaweth_ioctl;
1111 kaweth->net->hard_start_xmit = kaweth_start_xmit;
1112 kaweth->net->set_multicast_list = kaweth_set_rx_mode;
1113 kaweth->net->get_stats = kaweth_netdev_stats;
1114 kaweth->net->mtu = le16_to_cpu(kaweth->configuration.segment_size);
1115
1116 memset(&kaweth->stats, 0, sizeof(kaweth->stats));
1117
1118 INIT_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl, (void *)kaweth);
1119
1120 SET_MODULE_OWNER(netdev);
1121
1122 usb_set_intfdata(intf, kaweth);
1123
1124 #if 0
1125 // dma_supported() is deeply broken on almost all architectures
1126 if (dma_supported (&intf->dev, 0xffffffffffffffffULL))
1127 kaweth->net->features |= NETIF_F_HIGHDMA;
1128 #endif
1129
1130 SET_NETDEV_DEV(netdev, &intf->dev);
1131 if (register_netdev(netdev) != 0) {
1132 kaweth_err("Error registering netdev.");
1133 goto err_intfdata;
1134 }
1135
1136 kaweth_info("kaweth interface created at %s", kaweth->net->name);
1137
1138 kaweth_dbg("Kaweth probe returning.");
1139
1140 return 0;
1141
1142 err_intfdata:
1143 usb_set_intfdata(intf, NULL);
1144 usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1145 err_all_but_rxbuf:
1146 usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1147 err_tx_and_rx_and_irq:
1148 usb_free_urb(kaweth->irq_urb);
1149 err_tx_and_rx:
1150 usb_free_urb(kaweth->rx_urb);
1151 err_only_tx:
1152 usb_free_urb(kaweth->tx_urb);
1153 err_no_urb:
1154 free_netdev(netdev);
1155 err_no_netdev:
1156 kfree(kaweth);
1157 return -EIO;
1158 }
1159
1160 /****************************************************************
1161 * kaweth_disconnect
1162 ****************************************************************/
1163 static void kaweth_disconnect(struct usb_interface *intf)
1164 {
1165 struct kaweth_device *kaweth = usb_get_intfdata(intf);
1166
1167 kaweth_info("Unregistering");
1168
1169 usb_set_intfdata(intf, NULL);
1170 if (!kaweth) {
1171 kaweth_warn("unregistering non-existant device");
1172 return;
1173 }
1174
1175 kaweth->removed = 1;
1176 usb_unlink_urb(kaweth->irq_urb);
1177 usb_unlink_urb(kaweth->rx_urb);
1178
1179 /* we need to wait for the urb to be cancelled, if it is active */
1180 spin_lock(&kaweth->device_lock);
1181 if (usb_unlink_urb(kaweth->tx_urb) == -EINPROGRESS) {
1182 spin_unlock(&kaweth->device_lock);
1183 wait_event(kaweth->term_wait, kaweth->end);
1184 } else {
1185 spin_unlock(&kaweth->device_lock);
1186 }
1187
1188 if(kaweth->net) {
1189 if(kaweth->net->flags & IFF_UP) {
1190 kaweth_dbg("Closing net device");
1191 dev_close(kaweth->net);
1192 }
1193
1194 kaweth_dbg("Unregistering net device");
1195 unregister_netdev(kaweth->net);
1196 free_netdev(kaweth->net);
1197 }
1198
1199 usb_free_urb(kaweth->rx_urb);
1200 usb_free_urb(kaweth->tx_urb);
1201 usb_free_urb(kaweth->irq_urb);
1202
1203
1204 usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1205 usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1206
1207 kfree(kaweth);
1208 }
1209
1210
1211 // FIXME this completion stuff is a modified clone of
1212 // an OLD version of some stuff in usb.c ...
1213 struct usb_api_data {
1214 wait_queue_head_t wqh;
1215 int done;
1216 };
1217
1218 /*-------------------------------------------------------------------*
1219 * completion handler for compatibility wrappers (sync control/bulk) *
1220 *-------------------------------------------------------------------*/
1221 static void usb_api_blocking_completion(struct urb *urb, struct pt_regs *regs)
1222 {
1223 struct usb_api_data *awd = (struct usb_api_data *)urb->context;
1224
1225 awd->done=1;
1226 wake_up(&awd->wqh);
1227 }
1228
1229 /*-------------------------------------------------------------------*
1230 * COMPATIBILITY STUFF *
1231 *-------------------------------------------------------------------*/
1232
1233 // Starts urb and waits for completion or timeout
1234 static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length)
1235 {
1236 DECLARE_WAITQUEUE(wait, current);
1237 struct usb_api_data awd;
1238 int status;
1239
1240 init_waitqueue_head(&awd.wqh);
1241 awd.done = 0;
1242
1243 add_wait_queue(&awd.wqh, &wait);
1244 urb->context = &awd;
1245 status = usb_submit_urb(urb, GFP_NOIO);
1246 if (status) {
1247 // something went wrong
1248 usb_free_urb(urb);
1249 remove_wait_queue(&awd.wqh, &wait);
1250 return status;
1251 }
1252
1253 set_current_state(TASK_UNINTERRUPTIBLE);
1254 while (timeout && !awd.done) {
1255 timeout = schedule_timeout(timeout);
1256 set_current_state(TASK_UNINTERRUPTIBLE);
1257 }
1258
1259 set_current_state(TASK_RUNNING);
1260 remove_wait_queue(&awd.wqh, &wait);
1261
1262 if (!timeout) {
1263 // timeout
1264 kaweth_warn("usb_control/bulk_msg: timeout");
1265 usb_unlink_urb(urb); // remove urb safely
1266 status = -ETIMEDOUT;
1267 }
1268 else {
1269 status = urb->status;
1270 }
1271
1272 if (actual_length) {
1273 *actual_length = urb->actual_length;
1274 }
1275
1276 usb_free_urb(urb);
1277 return status;
1278 }
1279
1280 /*-------------------------------------------------------------------*/
1281 // returns status (negative) or length (positive)
1282 static int kaweth_internal_control_msg(struct usb_device *usb_dev,
1283 unsigned int pipe,
1284 struct usb_ctrlrequest *cmd, void *data,
1285 int len, int timeout)
1286 {
1287 struct urb *urb;
1288 int retv;
1289 int length;
1290
1291 urb = usb_alloc_urb(0, GFP_NOIO);
1292 if (!urb)
1293 return -ENOMEM;
1294
1295 usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data,
1296 len, usb_api_blocking_completion, NULL);
1297
1298 retv = usb_start_wait_urb(urb, timeout, &length);
1299 if (retv < 0) {
1300 return retv;
1301 }
1302 else {
1303 return length;
1304 }
1305 }
1306
1307
1308 /****************************************************************
1309 * kaweth_init
1310 ****************************************************************/
1311 static int __init kaweth_init(void)
1312 {
1313 kaweth_dbg("Driver loading");
1314 return usb_register(&kaweth_driver);
1315 }
1316
1317 /****************************************************************
1318 * kaweth_exit
1319 ****************************************************************/
1320 static void __exit kaweth_exit(void)
1321 {
1322 usb_deregister(&kaweth_driver);
1323 }
1324
1325 module_init(kaweth_init);
1326 module_exit(kaweth_exit);
1327
1328
1329
1330
1331
1332
1333
1334
1335
MOXA 2.6.9 from sdlinux-moxaart.tgz