Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
[linux-2.6] / drivers / net / usb / kaweth.c
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/slab.h>
50 #include <linux/string.h>
51 #include <linux/init.h>
52 #include <linux/delay.h>
53 #include <linux/netdevice.h>
54 #include <linux/etherdevice.h>
55 #include <linux/usb.h>
56 #include <linux/types.h>
57 #include <linux/ethtool.h>
58 #include <linux/dma-mapping.h>
59 #include <linux/wait.h>
60 #include <asm/uaccess.h>
61 #include <asm/byteorder.h>
62
63 #undef DEBUG
64
65 #include "kawethfw.h"
66
67 #define KAWETH_MTU                      1514
68 #define KAWETH_BUF_SIZE                 1664
69 #define KAWETH_TX_TIMEOUT               (5 * HZ)
70 #define KAWETH_SCRATCH_SIZE             32
71 #define KAWETH_FIRMWARE_BUF_SIZE        4096
72 #define KAWETH_CONTROL_TIMEOUT          (30000)
73
74 #define KAWETH_STATUS_BROKEN            0x0000001
75 #define KAWETH_STATUS_CLOSING           0x0000002
76 #define KAWETH_STATUS_SUSPENDING        0x0000004
77
78 #define KAWETH_STATUS_BLOCKED (KAWETH_STATUS_CLOSING | KAWETH_STATUS_SUSPENDING)
79
80 #define KAWETH_PACKET_FILTER_PROMISCUOUS        0x01
81 #define KAWETH_PACKET_FILTER_ALL_MULTICAST      0x02
82 #define KAWETH_PACKET_FILTER_DIRECTED           0x04
83 #define KAWETH_PACKET_FILTER_BROADCAST          0x08
84 #define KAWETH_PACKET_FILTER_MULTICAST          0x10
85
86 /* Table 7 */
87 #define KAWETH_COMMAND_GET_ETHERNET_DESC        0x00
88 #define KAWETH_COMMAND_MULTICAST_FILTERS        0x01
89 #define KAWETH_COMMAND_SET_PACKET_FILTER        0x02
90 #define KAWETH_COMMAND_STATISTICS               0x03
91 #define KAWETH_COMMAND_SET_TEMP_MAC             0x06
92 #define KAWETH_COMMAND_GET_TEMP_MAC             0x07
93 #define KAWETH_COMMAND_SET_URB_SIZE             0x08
94 #define KAWETH_COMMAND_SET_SOFS_WAIT            0x09
95 #define KAWETH_COMMAND_SCAN                     0xFF
96
97 #define KAWETH_SOFS_TO_WAIT                     0x05
98
99 #define INTBUFFERSIZE                           4
100
101 #define STATE_OFFSET                            0
102 #define STATE_MASK                              0x40
103 #define STATE_SHIFT                             5
104
105 #define IS_BLOCKED(s) (s & KAWETH_STATUS_BLOCKED)
106
107
108 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>");
109 MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver");
110 MODULE_LICENSE("GPL");
111
112 static const char driver_name[] = "kaweth";
113
114 static int kaweth_probe(
115                 struct usb_interface *intf,
116                 const struct usb_device_id *id  /* from id_table */
117         );
118 static void kaweth_disconnect(struct usb_interface *intf);
119 static int kaweth_internal_control_msg(struct usb_device *usb_dev,
120                                        unsigned int pipe,
121                                        struct usb_ctrlrequest *cmd, void *data,
122                                        int len, int timeout);
123 static int kaweth_suspend(struct usb_interface *intf, pm_message_t message);
124 static int kaweth_resume(struct usb_interface *intf);
125
126 /****************************************************************
127  *     usb_device_id
128  ****************************************************************/
129 static struct usb_device_id usb_klsi_table[] = {
130         { USB_DEVICE(0x03e8, 0x0008) }, /* AOX Endpoints USB Ethernet */
131         { USB_DEVICE(0x04bb, 0x0901) }, /* I-O DATA USB-ET/T */
132         { USB_DEVICE(0x0506, 0x03e8) }, /* 3Com 3C19250 */
133         { USB_DEVICE(0x0506, 0x11f8) }, /* 3Com 3C460 */
134         { USB_DEVICE(0x0557, 0x2002) }, /* ATEN USB Ethernet */
135         { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */
136         { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */
137         { USB_DEVICE(0x0565, 0x0003) }, /* Optus@Home UEP1045A */
138         { USB_DEVICE(0x0565, 0x0005) }, /* Peracom Enet2 */
139         { USB_DEVICE(0x05e9, 0x0008) }, /* KLSI KL5KUSB101B */
140         { USB_DEVICE(0x05e9, 0x0009) }, /* KLSI KL5KUSB101B (Board change) */
141         { USB_DEVICE(0x066b, 0x2202) }, /* Linksys USB10T */
142         { USB_DEVICE(0x06e1, 0x0008) }, /* ADS USB-10BT */
143         { USB_DEVICE(0x06e1, 0x0009) }, /* ADS USB-10BT */
144         { USB_DEVICE(0x0707, 0x0100) }, /* SMC 2202USB */
145         { USB_DEVICE(0x07aa, 0x0001) }, /* Correga K.K. */
146         { USB_DEVICE(0x07b8, 0x4000) }, /* D-Link DU-E10 */
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 */
162         { USB_DEVICE(0x1668, 0x0323) }, /* Actiontec USB Ethernet */
163         { USB_DEVICE(0x2001, 0x4000) }, /* D-link DSB-650C */
164         {} /* Null terminator */
165 };
166
167 MODULE_DEVICE_TABLE (usb, usb_klsi_table);
168
169 /****************************************************************
170  *     kaweth_driver
171  ****************************************************************/
172 static struct usb_driver kaweth_driver = {
173         .name =         driver_name,
174         .probe =        kaweth_probe,
175         .disconnect =   kaweth_disconnect,
176         .suspend =      kaweth_suspend,
177         .resume =       kaweth_resume,
178         .id_table =     usb_klsi_table,
179         .supports_autosuspend = 1,
180 };
181
182 typedef __u8 eth_addr_t[6];
183
184 /****************************************************************
185  *     usb_eth_dev
186  ****************************************************************/
187 struct usb_eth_dev {
188         char *name;
189         __u16 vendor;
190         __u16 device;
191         void *pdata;
192 };
193
194 /****************************************************************
195  *     kaweth_ethernet_configuration
196  *     Refer Table 8
197  ****************************************************************/
198 struct kaweth_ethernet_configuration
199 {
200         __u8 size;
201         __u8 reserved1;
202         __u8 reserved2;
203         eth_addr_t hw_addr;
204         __u32 statistics_mask;
205         __le16 segment_size;
206         __u16 max_multicast_filters;
207         __u8 reserved3;
208 } __attribute__ ((packed));
209
210 /****************************************************************
211  *     kaweth_device
212  ****************************************************************/
213 struct kaweth_device
214 {
215         spinlock_t device_lock;
216
217         __u32 status;
218         int end;
219         int suspend_lowmem_rx;
220         int suspend_lowmem_ctrl;
221         int linkstate;
222         int opened;
223         struct delayed_work lowmem_work;
224
225         struct usb_device *dev;
226         struct usb_interface *intf;
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 };
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         dbg("kaweth_control()");
268
269         if(in_interrupt()) {
270                 dbg("in_interrupt()");
271                 return -EBUSY;
272         }
273
274         dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
275
276         if (!dr) {
277                 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         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         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         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         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                 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         dbg("High: %i, Low:%i", kaweth->firmware_buf[3],
406                    kaweth->firmware_buf[2]);
407
408         dbg("Downloading firmware at %p to kaweth device at %p",
409             data,
410             kaweth);
411         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         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         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         mdelay(10);
471
472         dbg("kaweth_reset() returns %d.",result);
473
474         return result;
475 }
476
477 static void kaweth_usb_receive(struct urb *);
478 static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t);
479
480 /****************************************************************
481         int_callback
482 *****************************************************************/
483
484 static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t 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)
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(struct work_struct *work)
533 {
534         struct kaweth_device *kaweth =
535                 container_of(work, struct kaweth_device, lowmem_work.work);
536
537         if (IS_BLOCKED(kaweth->status))
538                 return;
539
540         if (kaweth->suspend_lowmem_rx)
541                 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
542
543         if (kaweth->suspend_lowmem_ctrl)
544                 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
545 }
546
547
548 /****************************************************************
549  *     kaweth_resubmit_rx_urb
550  ****************************************************************/
551 static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth,
552                                                 gfp_t mem_flags)
553 {
554         int result;
555
556         usb_fill_bulk_urb(kaweth->rx_urb,
557                       kaweth->dev,
558                       usb_rcvbulkpipe(kaweth->dev, 1),
559                       kaweth->rx_buf,
560                       KAWETH_BUF_SIZE,
561                       kaweth_usb_receive,
562                       kaweth);
563         kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
564         kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle;
565
566         if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) {
567                 if (result == -ENOMEM) {
568                         kaweth->suspend_lowmem_rx = 1;
569                         schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
570                 }
571                 err("resubmitting rx_urb %d failed", result);
572         } else {
573                 kaweth->suspend_lowmem_rx = 0;
574         }
575
576         return result;
577 }
578
579 static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth);
580
581 /****************************************************************
582  *     kaweth_usb_receive
583  ****************************************************************/
584 static void kaweth_usb_receive(struct urb *urb)
585 {
586         struct kaweth_device *kaweth = urb->context;
587         struct net_device *net = kaweth->net;
588
589         int count = urb->actual_length;
590         int count2 = urb->transfer_buffer_length;
591
592         __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf);
593
594         struct sk_buff *skb;
595
596         if(unlikely(urb->status == -ECONNRESET || urb->status == -ESHUTDOWN))
597         /* we are killed - set a flag and wake the disconnect handler */
598         {
599                 kaweth->end = 1;
600                 wake_up(&kaweth->term_wait);
601                 return;
602         }
603
604         spin_lock(&kaweth->device_lock);
605         if (IS_BLOCKED(kaweth->status)) {
606                 spin_unlock(&kaweth->device_lock);
607                 return;
608         }
609         spin_unlock(&kaweth->device_lock);
610
611         if(urb->status && urb->status != -EREMOTEIO && count != 1) {
612                 err("%s RX status: %d count: %d packet_len: %d",
613                            net->name,
614                            urb->status,
615                            count,
616                            (int)pkt_len);
617                 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
618                 return;
619         }
620
621         if(kaweth->net && (count > 2)) {
622                 if(pkt_len > (count - 2)) {
623                         err("Packet length too long for USB frame (pkt_len: %x, count: %x)",pkt_len, count);
624                         err("Packet len & 2047: %x", pkt_len & 2047);
625                         err("Count 2: %x", count2);
626                         kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
627                         return;
628                 }
629
630                 if(!(skb = dev_alloc_skb(pkt_len+2))) {
631                         kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
632                         return;
633                 }
634
635                 skb_reserve(skb, 2);    /* Align IP on 16 byte boundaries */
636
637                 skb_copy_to_linear_data(skb, kaweth->rx_buf + 2, pkt_len);
638
639                 skb_put(skb, pkt_len);
640
641                 skb->protocol = eth_type_trans(skb, net);
642
643                 netif_rx(skb);
644
645                 kaweth->stats.rx_packets++;
646                 kaweth->stats.rx_bytes += pkt_len;
647         }
648
649         kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
650 }
651
652 /****************************************************************
653  *     kaweth_open
654  ****************************************************************/
655 static int kaweth_open(struct net_device *net)
656 {
657         struct kaweth_device *kaweth = netdev_priv(net);
658         int res;
659
660         dbg("Opening network device.");
661
662         res = usb_autopm_get_interface(kaweth->intf);
663         if (res) {
664                 err("Interface cannot be resumed.");
665                 return -EIO;
666         }
667         res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL);
668         if (res)
669                 goto err_out;
670
671         usb_fill_int_urb(
672                 kaweth->irq_urb,
673                 kaweth->dev,
674                 usb_rcvintpipe(kaweth->dev, 3),
675                 kaweth->intbuffer,
676                 INTBUFFERSIZE,
677                 int_callback,
678                 kaweth,
679                 250); /* overriding the descriptor */
680         kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle;
681         kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
682
683         res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL);
684         if (res) {
685                 usb_kill_urb(kaweth->rx_urb);
686                 goto err_out;
687         }
688         kaweth->opened = 1;
689
690         netif_start_queue(net);
691
692         kaweth_async_set_rx_mode(kaweth);
693         return 0;
694
695 err_out:
696         usb_autopm_enable(kaweth->intf);
697         return -EIO;
698 }
699
700 /****************************************************************
701  *     kaweth_kill_urbs
702  ****************************************************************/
703 static void kaweth_kill_urbs(struct kaweth_device *kaweth)
704 {
705         usb_kill_urb(kaweth->irq_urb);
706         usb_kill_urb(kaweth->rx_urb);
707         usb_kill_urb(kaweth->tx_urb);
708
709         cancel_delayed_work_sync(&kaweth->lowmem_work);
710
711         /* a scheduled work may have resubmitted,
712            we hit them again */
713         usb_kill_urb(kaweth->irq_urb);
714         usb_kill_urb(kaweth->rx_urb);
715 }
716
717 /****************************************************************
718  *     kaweth_close
719  ****************************************************************/
720 static int kaweth_close(struct net_device *net)
721 {
722         struct kaweth_device *kaweth = netdev_priv(net);
723
724         netif_stop_queue(net);
725         kaweth->opened = 0;
726
727         kaweth->status |= KAWETH_STATUS_CLOSING;
728
729         kaweth_kill_urbs(kaweth);
730
731         kaweth->status &= ~KAWETH_STATUS_CLOSING;
732
733         usb_autopm_enable(kaweth->intf);
734
735         return 0;
736 }
737
738 static void kaweth_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
739 {
740         struct kaweth_device *kaweth = netdev_priv(dev);
741
742         strlcpy(info->driver, driver_name, sizeof(info->driver));
743         usb_make_path(kaweth->dev, info->bus_info, sizeof (info->bus_info));
744 }
745
746 static u32 kaweth_get_link(struct net_device *dev)
747 {
748         struct kaweth_device *kaweth = netdev_priv(dev);
749
750         return kaweth->linkstate;
751 }
752
753 static struct ethtool_ops ops = {
754         .get_drvinfo    = kaweth_get_drvinfo,
755         .get_link       = kaweth_get_link
756 };
757
758 /****************************************************************
759  *     kaweth_usb_transmit_complete
760  ****************************************************************/
761 static void kaweth_usb_transmit_complete(struct urb *urb)
762 {
763         struct kaweth_device *kaweth = urb->context;
764         struct sk_buff *skb = kaweth->tx_skb;
765
766         if (unlikely(urb->status != 0))
767                 if (urb->status != -ENOENT)
768                         dbg("%s: TX status %d.", kaweth->net->name, urb->status);
769
770         netif_wake_queue(kaweth->net);
771         dev_kfree_skb_irq(skb);
772 }
773
774 /****************************************************************
775  *     kaweth_start_xmit
776  ****************************************************************/
777 static int kaweth_start_xmit(struct sk_buff *skb, struct net_device *net)
778 {
779         struct kaweth_device *kaweth = netdev_priv(net);
780         __le16 *private_header;
781
782         int res;
783
784         spin_lock(&kaweth->device_lock);
785
786         kaweth_async_set_rx_mode(kaweth);
787         netif_stop_queue(net);
788         if (IS_BLOCKED(kaweth->status)) {
789                 goto skip;
790         }
791
792         /* We now decide whether we can put our special header into the sk_buff */
793         if (skb_cloned(skb) || skb_headroom(skb) < 2) {
794                 /* no such luck - we make our own */
795                 struct sk_buff *copied_skb;
796                 copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC);
797                 dev_kfree_skb_irq(skb);
798                 skb = copied_skb;
799                 if (!copied_skb) {
800                         kaweth->stats.tx_errors++;
801                         netif_start_queue(net);
802                         spin_unlock(&kaweth->device_lock);
803                         return 0;
804                 }
805         }
806
807         private_header = (__le16 *)__skb_push(skb, 2);
808         *private_header = cpu_to_le16(skb->len-2);
809         kaweth->tx_skb = skb;
810
811         usb_fill_bulk_urb(kaweth->tx_urb,
812                       kaweth->dev,
813                       usb_sndbulkpipe(kaweth->dev, 2),
814                       private_header,
815                       skb->len,
816                       kaweth_usb_transmit_complete,
817                       kaweth);
818         kaweth->end = 0;
819
820         if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC)))
821         {
822                 warn("kaweth failed tx_urb %d", res);
823 skip:
824                 kaweth->stats.tx_errors++;
825
826                 netif_start_queue(net);
827                 dev_kfree_skb_irq(skb);
828         }
829         else
830         {
831                 kaweth->stats.tx_packets++;
832                 kaweth->stats.tx_bytes += skb->len;
833                 net->trans_start = jiffies;
834         }
835
836         spin_unlock(&kaweth->device_lock);
837
838         return 0;
839 }
840
841 /****************************************************************
842  *     kaweth_set_rx_mode
843  ****************************************************************/
844 static void kaweth_set_rx_mode(struct net_device *net)
845 {
846         struct kaweth_device *kaweth = netdev_priv(net);
847
848         __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED |
849                                      KAWETH_PACKET_FILTER_BROADCAST |
850                                      KAWETH_PACKET_FILTER_MULTICAST;
851
852         dbg("Setting Rx mode to %d", packet_filter_bitmap);
853
854         netif_stop_queue(net);
855
856         if (net->flags & IFF_PROMISC) {
857                 packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS;
858         }
859         else if ((net->mc_count) || (net->flags & IFF_ALLMULTI)) {
860                 packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST;
861         }
862
863         kaweth->packet_filter_bitmap = packet_filter_bitmap;
864         netif_wake_queue(net);
865 }
866
867 /****************************************************************
868  *     kaweth_async_set_rx_mode
869  ****************************************************************/
870 static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth)
871 {
872         __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap;
873         kaweth->packet_filter_bitmap = 0;
874         if (packet_filter_bitmap == 0)
875                 return;
876
877         {
878         int result;
879         result = kaweth_control(kaweth,
880                                 usb_sndctrlpipe(kaweth->dev, 0),
881                                 KAWETH_COMMAND_SET_PACKET_FILTER,
882                                 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
883                                 packet_filter_bitmap,
884                                 0,
885                                 (void *)&kaweth->scratch,
886                                 0,
887                                 KAWETH_CONTROL_TIMEOUT);
888
889         if(result < 0) {
890                 err("Failed to set Rx mode: %d", result);
891         }
892         else {
893                 dbg("Set Rx mode to %d", packet_filter_bitmap);
894         }
895         }
896 }
897
898 /****************************************************************
899  *     kaweth_netdev_stats
900  ****************************************************************/
901 static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev)
902 {
903         struct kaweth_device *kaweth = netdev_priv(dev);
904         return &kaweth->stats;
905 }
906
907 /****************************************************************
908  *     kaweth_tx_timeout
909  ****************************************************************/
910 static void kaweth_tx_timeout(struct net_device *net)
911 {
912         struct kaweth_device *kaweth = netdev_priv(net);
913
914         warn("%s: Tx timed out. Resetting.", net->name);
915         kaweth->stats.tx_errors++;
916         net->trans_start = jiffies;
917
918         usb_unlink_urb(kaweth->tx_urb);
919 }
920
921 /****************************************************************
922  *     kaweth_suspend
923  ****************************************************************/
924 static int kaweth_suspend(struct usb_interface *intf, pm_message_t message)
925 {
926         struct kaweth_device *kaweth = usb_get_intfdata(intf);
927         unsigned long flags;
928
929         dbg("Suspending device");
930         spin_lock_irqsave(&kaweth->device_lock, flags);
931         kaweth->status |= KAWETH_STATUS_SUSPENDING;
932         spin_unlock_irqrestore(&kaweth->device_lock, flags);
933
934         kaweth_kill_urbs(kaweth);
935         return 0;
936 }
937
938 /****************************************************************
939  *     kaweth_resume
940  ****************************************************************/
941 static int kaweth_resume(struct usb_interface *intf)
942 {
943         struct kaweth_device *kaweth = usb_get_intfdata(intf);
944         unsigned long flags;
945
946         dbg("Resuming device");
947         spin_lock_irqsave(&kaweth->device_lock, flags);
948         kaweth->status &= ~KAWETH_STATUS_SUSPENDING;
949         spin_unlock_irqrestore(&kaweth->device_lock, flags);
950
951         if (!kaweth->opened)
952                 return 0;
953         kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
954         kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
955
956         return 0;
957 }
958
959 /****************************************************************
960  *     kaweth_probe
961  ****************************************************************/
962 static int kaweth_probe(
963                 struct usb_interface *intf,
964                 const struct usb_device_id *id      /* from id_table */
965         )
966 {
967         struct usb_device *dev = interface_to_usbdev(intf);
968         struct kaweth_device *kaweth;
969         struct net_device *netdev;
970         const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
971         int result = 0;
972
973         dbg("Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x",
974                  dev->devnum,
975                  le16_to_cpu(dev->descriptor.idVendor),
976                  le16_to_cpu(dev->descriptor.idProduct),
977                  le16_to_cpu(dev->descriptor.bcdDevice));
978
979         dbg("Device at %p", dev);
980
981         dbg("Descriptor length: %x type: %x",
982                  (int)dev->descriptor.bLength,
983                  (int)dev->descriptor.bDescriptorType);
984
985         netdev = alloc_etherdev(sizeof(*kaweth));
986         if (!netdev)
987                 return -ENOMEM;
988
989         kaweth = netdev_priv(netdev);
990         kaweth->dev = dev;
991         kaweth->net = netdev;
992
993         spin_lock_init(&kaweth->device_lock);
994         init_waitqueue_head(&kaweth->term_wait);
995
996         dbg("Resetting.");
997
998         kaweth_reset(kaweth);
999
1000         /*
1001          * If high byte of bcdDevice is nonzero, firmware is already
1002          * downloaded. Don't try to do it again, or we'll hang the device.
1003          */
1004
1005         if (le16_to_cpu(dev->descriptor.bcdDevice) >> 8) {
1006                 info("Firmware present in device.");
1007         } else {
1008                 /* Download the firmware */
1009                 info("Downloading firmware...");
1010                 kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL);
1011                 if ((result = kaweth_download_firmware(kaweth,
1012                                                       kaweth_new_code,
1013                                                       len_kaweth_new_code,
1014                                                       100,
1015                                                       2)) < 0) {
1016                         err("Error downloading firmware (%d)", result);
1017                         goto err_fw;
1018                 }
1019
1020                 if ((result = kaweth_download_firmware(kaweth,
1021                                                       kaweth_new_code_fix,
1022                                                       len_kaweth_new_code_fix,
1023                                                       100,
1024                                                       3)) < 0) {
1025                         err("Error downloading firmware fix (%d)", result);
1026                         goto err_fw;
1027                 }
1028
1029                 if ((result = kaweth_download_firmware(kaweth,
1030                                                       kaweth_trigger_code,
1031                                                       len_kaweth_trigger_code,
1032                                                       126,
1033                                                       2)) < 0) {
1034                         err("Error downloading trigger code (%d)", result);
1035                         goto err_fw;
1036
1037                 }
1038
1039                 if ((result = kaweth_download_firmware(kaweth,
1040                                                       kaweth_trigger_code_fix,
1041                                                       len_kaweth_trigger_code_fix,
1042                                                       126,
1043                                                       3)) < 0) {
1044                         err("Error downloading trigger code fix (%d)", result);
1045                         goto err_fw;
1046                 }
1047
1048
1049                 if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
1050                         err("Error triggering firmware (%d)", result);
1051                         goto err_fw;
1052                 }
1053
1054                 /* Device will now disappear for a moment...  */
1055                 info("Firmware loaded.  I'll be back...");
1056 err_fw:
1057                 free_page((unsigned long)kaweth->firmware_buf);
1058                 free_netdev(netdev);
1059                 return -EIO;
1060         }
1061
1062         result = kaweth_read_configuration(kaweth);
1063
1064         if(result < 0) {
1065                 err("Error reading configuration (%d), no net device created", result);
1066                 goto err_free_netdev;
1067         }
1068
1069         info("Statistics collection: %x", kaweth->configuration.statistics_mask);
1070         info("Multicast filter limit: %x", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
1071         info("MTU: %d", le16_to_cpu(kaweth->configuration.segment_size));
1072         info("Read MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
1073                  (int)kaweth->configuration.hw_addr[0],
1074                  (int)kaweth->configuration.hw_addr[1],
1075                  (int)kaweth->configuration.hw_addr[2],
1076                  (int)kaweth->configuration.hw_addr[3],
1077                  (int)kaweth->configuration.hw_addr[4],
1078                  (int)kaweth->configuration.hw_addr[5]);
1079
1080         if(!memcmp(&kaweth->configuration.hw_addr,
1081                    &bcast_addr,
1082                    sizeof(bcast_addr))) {
1083                 err("Firmware not functioning properly, no net device created");
1084                 goto err_free_netdev;
1085         }
1086
1087         if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
1088                 dbg("Error setting URB size");
1089                 goto err_free_netdev;
1090         }
1091
1092         if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
1093                 err("Error setting SOFS wait");
1094                 goto err_free_netdev;
1095         }
1096
1097         result = kaweth_set_receive_filter(kaweth,
1098                                            KAWETH_PACKET_FILTER_DIRECTED |
1099                                            KAWETH_PACKET_FILTER_BROADCAST |
1100                                            KAWETH_PACKET_FILTER_MULTICAST);
1101
1102         if(result < 0) {
1103                 err("Error setting receive filter");
1104                 goto err_free_netdev;
1105         }
1106
1107         dbg("Initializing net device.");
1108
1109         kaweth->intf = intf;
1110
1111         kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1112         if (!kaweth->tx_urb)
1113                 goto err_free_netdev;
1114         kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1115         if (!kaweth->rx_urb)
1116                 goto err_only_tx;
1117         kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
1118         if (!kaweth->irq_urb)
1119                 goto err_tx_and_rx;
1120
1121         kaweth->intbuffer = usb_buffer_alloc(   kaweth->dev,
1122                                                 INTBUFFERSIZE,
1123                                                 GFP_KERNEL,
1124                                                 &kaweth->intbufferhandle);
1125         if (!kaweth->intbuffer)
1126                 goto err_tx_and_rx_and_irq;
1127         kaweth->rx_buf = usb_buffer_alloc(      kaweth->dev,
1128                                                 KAWETH_BUF_SIZE,
1129                                                 GFP_KERNEL,
1130                                                 &kaweth->rxbufferhandle);
1131         if (!kaweth->rx_buf)
1132                 goto err_all_but_rxbuf;
1133
1134         memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr));
1135         memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr,
1136                sizeof(kaweth->configuration.hw_addr));
1137
1138         netdev->open = kaweth_open;
1139         netdev->stop = kaweth_close;
1140
1141         netdev->watchdog_timeo = KAWETH_TX_TIMEOUT;
1142         netdev->tx_timeout = kaweth_tx_timeout;
1143
1144         netdev->hard_start_xmit = kaweth_start_xmit;
1145         netdev->set_multicast_list = kaweth_set_rx_mode;
1146         netdev->get_stats = kaweth_netdev_stats;
1147         netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size);
1148         SET_ETHTOOL_OPS(netdev, &ops);
1149
1150         /* kaweth is zeroed as part of alloc_netdev */
1151
1152         INIT_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl);
1153
1154         usb_set_intfdata(intf, kaweth);
1155
1156 #if 0
1157 // dma_supported() is deeply broken on almost all architectures
1158         if (dma_supported (&intf->dev, 0xffffffffffffffffULL))
1159                 kaweth->net->features |= NETIF_F_HIGHDMA;
1160 #endif
1161
1162         SET_NETDEV_DEV(netdev, &intf->dev);
1163         if (register_netdev(netdev) != 0) {
1164                 err("Error registering netdev.");
1165                 goto err_intfdata;
1166         }
1167
1168         info("kaweth interface created at %s", kaweth->net->name);
1169
1170         dbg("Kaweth probe returning.");
1171
1172         return 0;
1173
1174 err_intfdata:
1175         usb_set_intfdata(intf, NULL);
1176         usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1177 err_all_but_rxbuf:
1178         usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1179 err_tx_and_rx_and_irq:
1180         usb_free_urb(kaweth->irq_urb);
1181 err_tx_and_rx:
1182         usb_free_urb(kaweth->rx_urb);
1183 err_only_tx:
1184         usb_free_urb(kaweth->tx_urb);
1185 err_free_netdev:
1186         free_netdev(netdev);
1187
1188         return -EIO;
1189 }
1190
1191 /****************************************************************
1192  *     kaweth_disconnect
1193  ****************************************************************/
1194 static void kaweth_disconnect(struct usb_interface *intf)
1195 {
1196         struct kaweth_device *kaweth = usb_get_intfdata(intf);
1197         struct net_device *netdev;
1198
1199         info("Unregistering");
1200
1201         usb_set_intfdata(intf, NULL);
1202         if (!kaweth) {
1203                 warn("unregistering non-existant device");
1204                 return;
1205         }
1206         netdev = kaweth->net;
1207
1208         dbg("Unregistering net device");
1209         unregister_netdev(netdev);
1210
1211         usb_free_urb(kaweth->rx_urb);
1212         usb_free_urb(kaweth->tx_urb);
1213         usb_free_urb(kaweth->irq_urb);
1214
1215         usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1216         usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1217
1218         free_netdev(netdev);
1219 }
1220
1221
1222 // FIXME this completion stuff is a modified clone of
1223 // an OLD version of some stuff in usb.c ...
1224 struct usb_api_data {
1225         wait_queue_head_t wqh;
1226         int done;
1227 };
1228
1229 /*-------------------------------------------------------------------*
1230  * completion handler for compatibility wrappers (sync control/bulk) *
1231  *-------------------------------------------------------------------*/
1232 static void usb_api_blocking_completion(struct urb *urb)
1233 {
1234         struct usb_api_data *awd = (struct usb_api_data *)urb->context;
1235
1236         awd->done=1;
1237         wake_up(&awd->wqh);
1238 }
1239
1240 /*-------------------------------------------------------------------*
1241  *                         COMPATIBILITY STUFF                       *
1242  *-------------------------------------------------------------------*/
1243
1244 // Starts urb and waits for completion or timeout
1245 static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length)
1246 {
1247         struct usb_api_data awd;
1248         int status;
1249
1250         init_waitqueue_head(&awd.wqh);
1251         awd.done = 0;
1252
1253         urb->context = &awd;
1254         status = usb_submit_urb(urb, GFP_NOIO);
1255         if (status) {
1256                 // something went wrong
1257                 usb_free_urb(urb);
1258                 return status;
1259         }
1260
1261         if (!wait_event_timeout(awd.wqh, awd.done, timeout)) {
1262                 // timeout
1263                 warn("usb_control/bulk_msg: timeout");
1264                 usb_kill_urb(urb);  // remove urb safely
1265                 status = -ETIMEDOUT;
1266         }
1267         else {
1268                 status = urb->status;
1269         }
1270
1271         if (actual_length) {
1272                 *actual_length = urb->actual_length;
1273         }
1274
1275         usb_free_urb(urb);
1276         return status;
1277 }
1278
1279 /*-------------------------------------------------------------------*/
1280 // returns status (negative) or length (positive)
1281 static int kaweth_internal_control_msg(struct usb_device *usb_dev,
1282                                        unsigned int pipe,
1283                                        struct usb_ctrlrequest *cmd, void *data,
1284                                        int len, int timeout)
1285 {
1286         struct urb *urb;
1287         int retv;
1288         int length = 0; /* shut up GCC */
1289
1290         urb = usb_alloc_urb(0, GFP_NOIO);
1291         if (!urb)
1292                 return -ENOMEM;
1293
1294         usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data,
1295                          len, usb_api_blocking_completion, NULL);
1296
1297         retv = usb_start_wait_urb(urb, timeout, &length);
1298         if (retv < 0) {
1299                 return retv;
1300         }
1301         else {
1302                 return length;
1303         }
1304 }
1305
1306
1307 /****************************************************************
1308  *     kaweth_init
1309  ****************************************************************/
1310 static int __init kaweth_init(void)
1311 {
1312         dbg("Driver loading");
1313         return usb_register(&kaweth_driver);
1314 }
1315
1316 /****************************************************************
1317  *     kaweth_exit
1318  ****************************************************************/
1319 static void __exit kaweth_exit(void)
1320 {
1321         usb_deregister(&kaweth_driver);
1322 }
1323
1324 module_init(kaweth_init);
1325 module_exit(kaweth_exit);
1326
1327
1328
1329
1330
1331
1332
1333
1334