[XFS] Fix merge failures
[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 <linux/firmware.h>
61 #include <asm/uaccess.h>
62 #include <asm/byteorder.h>
63
64 #undef DEBUG
65
66 #define KAWETH_MTU                      1514
67 #define KAWETH_BUF_SIZE                 1664
68 #define KAWETH_TX_TIMEOUT               (5 * HZ)
69 #define KAWETH_SCRATCH_SIZE             32
70 #define KAWETH_FIRMWARE_BUF_SIZE        4096
71 #define KAWETH_CONTROL_TIMEOUT          (30000)
72
73 #define KAWETH_STATUS_BROKEN            0x0000001
74 #define KAWETH_STATUS_CLOSING           0x0000002
75 #define KAWETH_STATUS_SUSPENDING        0x0000004
76
77 #define KAWETH_STATUS_BLOCKED (KAWETH_STATUS_CLOSING | KAWETH_STATUS_SUSPENDING)
78
79 #define KAWETH_PACKET_FILTER_PROMISCUOUS        0x01
80 #define KAWETH_PACKET_FILTER_ALL_MULTICAST      0x02
81 #define KAWETH_PACKET_FILTER_DIRECTED           0x04
82 #define KAWETH_PACKET_FILTER_BROADCAST          0x08
83 #define KAWETH_PACKET_FILTER_MULTICAST          0x10
84
85 /* Table 7 */
86 #define KAWETH_COMMAND_GET_ETHERNET_DESC        0x00
87 #define KAWETH_COMMAND_MULTICAST_FILTERS        0x01
88 #define KAWETH_COMMAND_SET_PACKET_FILTER        0x02
89 #define KAWETH_COMMAND_STATISTICS               0x03
90 #define KAWETH_COMMAND_SET_TEMP_MAC             0x06
91 #define KAWETH_COMMAND_GET_TEMP_MAC             0x07
92 #define KAWETH_COMMAND_SET_URB_SIZE             0x08
93 #define KAWETH_COMMAND_SET_SOFS_WAIT            0x09
94 #define KAWETH_COMMAND_SCAN                     0xFF
95
96 #define KAWETH_SOFS_TO_WAIT                     0x05
97
98 #define INTBUFFERSIZE                           4
99
100 #define STATE_OFFSET                            0
101 #define STATE_MASK                              0x40
102 #define STATE_SHIFT                             5
103
104 #define IS_BLOCKED(s) (s & KAWETH_STATUS_BLOCKED)
105
106
107 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>");
108 MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver");
109 MODULE_LICENSE("GPL");
110 MODULE_FIRMWARE("kaweth/new_code.bin");
111 MODULE_FIRMWARE("kaweth/new_code_fix.bin");
112 MODULE_FIRMWARE("kaweth/trigger_code.bin");
113 MODULE_FIRMWARE("kaweth/trigger_code_fix.bin");
114
115 static const char driver_name[] = "kaweth";
116
117 static int kaweth_probe(
118                 struct usb_interface *intf,
119                 const struct usb_device_id *id  /* from id_table */
120         );
121 static void kaweth_disconnect(struct usb_interface *intf);
122 static int kaweth_internal_control_msg(struct usb_device *usb_dev,
123                                        unsigned int pipe,
124                                        struct usb_ctrlrequest *cmd, void *data,
125                                        int len, int timeout);
126 static int kaweth_suspend(struct usb_interface *intf, pm_message_t message);
127 static int kaweth_resume(struct usb_interface *intf);
128
129 /****************************************************************
130  *     usb_device_id
131  ****************************************************************/
132 static struct usb_device_id usb_klsi_table[] = {
133         { USB_DEVICE(0x03e8, 0x0008) }, /* AOX Endpoints USB Ethernet */
134         { USB_DEVICE(0x04bb, 0x0901) }, /* I-O DATA USB-ET/T */
135         { USB_DEVICE(0x0506, 0x03e8) }, /* 3Com 3C19250 */
136         { USB_DEVICE(0x0506, 0x11f8) }, /* 3Com 3C460 */
137         { USB_DEVICE(0x0557, 0x2002) }, /* ATEN USB Ethernet */
138         { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */
139         { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */
140         { USB_DEVICE(0x0565, 0x0003) }, /* Optus@Home UEP1045A */
141         { USB_DEVICE(0x0565, 0x0005) }, /* Peracom Enet2 */
142         { USB_DEVICE(0x05e9, 0x0008) }, /* KLSI KL5KUSB101B */
143         { USB_DEVICE(0x05e9, 0x0009) }, /* KLSI KL5KUSB101B (Board change) */
144         { USB_DEVICE(0x066b, 0x2202) }, /* Linksys USB10T */
145         { USB_DEVICE(0x06e1, 0x0008) }, /* ADS USB-10BT */
146         { USB_DEVICE(0x06e1, 0x0009) }, /* ADS USB-10BT */
147         { USB_DEVICE(0x0707, 0x0100) }, /* SMC 2202USB */
148         { USB_DEVICE(0x07aa, 0x0001) }, /* Correga K.K. */
149         { USB_DEVICE(0x07b8, 0x4000) }, /* D-Link DU-E10 */
150         { USB_DEVICE(0x0846, 0x1001) }, /* NetGear EA-101 */
151         { USB_DEVICE(0x0846, 0x1002) }, /* NetGear EA-101 */
152         { USB_DEVICE(0x085a, 0x0008) }, /* PortGear Ethernet Adapter */
153         { USB_DEVICE(0x085a, 0x0009) }, /* PortGear Ethernet Adapter */
154         { USB_DEVICE(0x087d, 0x5704) }, /* Jaton USB Ethernet Device Adapter */
155         { USB_DEVICE(0x0951, 0x0008) }, /* Kingston Technology USB Ethernet Adapter */
156         { USB_DEVICE(0x095a, 0x3003) }, /* Portsmith Express Ethernet Adapter */
157         { USB_DEVICE(0x10bd, 0x1427) }, /* ASANTE USB To Ethernet Adapter */
158         { USB_DEVICE(0x1342, 0x0204) }, /* Mobility USB-Ethernet Adapter */
159         { USB_DEVICE(0x13d2, 0x0400) }, /* Shark Pocket Adapter */
160         { USB_DEVICE(0x1485, 0x0001) }, /* Silicom U2E */
161         { USB_DEVICE(0x1485, 0x0002) }, /* Psion Dacom Gold Port Ethernet */
162         { USB_DEVICE(0x1645, 0x0005) }, /* Entrega E45 */
163         { USB_DEVICE(0x1645, 0x0008) }, /* Entrega USB Ethernet Adapter */
164         { USB_DEVICE(0x1645, 0x8005) }, /* PortGear Ethernet Adapter */
165         { USB_DEVICE(0x1668, 0x0323) }, /* Actiontec USB Ethernet */
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         .name =         driver_name,
177         .probe =        kaweth_probe,
178         .disconnect =   kaweth_disconnect,
179         .suspend =      kaweth_suspend,
180         .resume =       kaweth_resume,
181         .id_table =     usb_klsi_table,
182         .supports_autosuspend = 1,
183 };
184
185 typedef __u8 eth_addr_t[6];
186
187 /****************************************************************
188  *     usb_eth_dev
189  ****************************************************************/
190 struct usb_eth_dev {
191         char *name;
192         __u16 vendor;
193         __u16 device;
194         void *pdata;
195 };
196
197 /****************************************************************
198  *     kaweth_ethernet_configuration
199  *     Refer Table 8
200  ****************************************************************/
201 struct kaweth_ethernet_configuration
202 {
203         __u8 size;
204         __u8 reserved1;
205         __u8 reserved2;
206         eth_addr_t hw_addr;
207         __u32 statistics_mask;
208         __le16 segment_size;
209         __u16 max_multicast_filters;
210         __u8 reserved3;
211 } __attribute__ ((packed));
212
213 /****************************************************************
214  *     kaweth_device
215  ****************************************************************/
216 struct kaweth_device
217 {
218         spinlock_t device_lock;
219
220         __u32 status;
221         int end;
222         int suspend_lowmem_rx;
223         int suspend_lowmem_ctrl;
224         int linkstate;
225         int opened;
226         struct delayed_work lowmem_work;
227
228         struct usb_device *dev;
229         struct usb_interface *intf;
230         struct net_device *net;
231         wait_queue_head_t term_wait;
232
233         struct urb *rx_urb;
234         struct urb *tx_urb;
235         struct urb *irq_urb;
236
237         dma_addr_t intbufferhandle;
238         __u8 *intbuffer;
239         dma_addr_t rxbufferhandle;
240         __u8 *rx_buf;
241
242         
243         struct sk_buff *tx_skb;
244
245         __u8 *firmware_buf;
246         __u8 scratch[KAWETH_SCRATCH_SIZE];
247         __u16 packet_filter_bitmap;
248
249         struct kaweth_ethernet_configuration configuration;
250
251         struct net_device_stats stats;
252 };
253
254
255 /****************************************************************
256  *     kaweth_control
257  ****************************************************************/
258 static int kaweth_control(struct kaweth_device *kaweth,
259                           unsigned int pipe,
260                           __u8 request,
261                           __u8 requesttype,
262                           __u16 value,
263                           __u16 index,
264                           void *data,
265                           __u16 size,
266                           int timeout)
267 {
268         struct usb_ctrlrequest *dr;
269
270         dbg("kaweth_control()");
271
272         if(in_interrupt()) {
273                 dbg("in_interrupt()");
274                 return -EBUSY;
275         }
276
277         dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
278
279         if (!dr) {
280                 dbg("kmalloc() failed");
281                 return -ENOMEM;
282         }
283
284         dr->bRequestType= requesttype;
285         dr->bRequest = request;
286         dr->wValue = cpu_to_le16p(&value);
287         dr->wIndex = cpu_to_le16p(&index);
288         dr->wLength = cpu_to_le16p(&size);
289
290         return kaweth_internal_control_msg(kaweth->dev,
291                                         pipe,
292                                         dr,
293                                         data,
294                                         size,
295                                         timeout);
296 }
297
298 /****************************************************************
299  *     kaweth_read_configuration
300  ****************************************************************/
301 static int kaweth_read_configuration(struct kaweth_device *kaweth)
302 {
303         int retval;
304
305         dbg("Reading kaweth configuration");
306
307         retval = kaweth_control(kaweth,
308                                 usb_rcvctrlpipe(kaweth->dev, 0),
309                                 KAWETH_COMMAND_GET_ETHERNET_DESC,
310                                 USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
311                                 0,
312                                 0,
313                                 (void *)&kaweth->configuration,
314                                 sizeof(kaweth->configuration),
315                                 KAWETH_CONTROL_TIMEOUT);
316
317         return retval;
318 }
319
320 /****************************************************************
321  *     kaweth_set_urb_size
322  ****************************************************************/
323 static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size)
324 {
325         int retval;
326
327         dbg("Setting URB size to %d", (unsigned)urb_size);
328
329         retval = kaweth_control(kaweth,
330                                 usb_sndctrlpipe(kaweth->dev, 0),
331                                 KAWETH_COMMAND_SET_URB_SIZE,
332                                 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
333                                 urb_size,
334                                 0,
335                                 (void *)&kaweth->scratch,
336                                 0,
337                                 KAWETH_CONTROL_TIMEOUT);
338
339         return retval;
340 }
341
342 /****************************************************************
343  *     kaweth_set_sofs_wait
344  ****************************************************************/
345 static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait)
346 {
347         int retval;
348
349         dbg("Set SOFS wait to %d", (unsigned)sofs_wait);
350
351         retval = kaweth_control(kaweth,
352                                 usb_sndctrlpipe(kaweth->dev, 0),
353                                 KAWETH_COMMAND_SET_SOFS_WAIT,
354                                 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
355                                 sofs_wait,
356                                 0,
357                                 (void *)&kaweth->scratch,
358                                 0,
359                                 KAWETH_CONTROL_TIMEOUT);
360
361         return retval;
362 }
363
364 /****************************************************************
365  *     kaweth_set_receive_filter
366  ****************************************************************/
367 static int kaweth_set_receive_filter(struct kaweth_device *kaweth,
368                                      __u16 receive_filter)
369 {
370         int retval;
371
372         dbg("Set receive filter to %d", (unsigned)receive_filter);
373
374         retval = kaweth_control(kaweth,
375                                 usb_sndctrlpipe(kaweth->dev, 0),
376                                 KAWETH_COMMAND_SET_PACKET_FILTER,
377                                 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
378                                 receive_filter,
379                                 0,
380                                 (void *)&kaweth->scratch,
381                                 0,
382                                 KAWETH_CONTROL_TIMEOUT);
383
384         return retval;
385 }
386
387 /****************************************************************
388  *     kaweth_download_firmware
389  ****************************************************************/
390 static int kaweth_download_firmware(struct kaweth_device *kaweth,
391                                     const char *fwname,
392                                     __u8 interrupt,
393                                     __u8 type)
394 {
395         const struct firmware *fw;
396         int data_len;
397         int ret;
398
399         ret = request_firmware(&fw, fwname, &kaweth->dev->dev);
400         if (ret) {
401                 err("Firmware request failed\n");
402                 return ret;
403         }
404
405         if (fw->size > KAWETH_FIRMWARE_BUF_SIZE) {
406                 err("Firmware too big: %zu", fw->size);
407                 return -ENOSPC;
408         }
409         data_len = fw->size;
410         memcpy(kaweth->firmware_buf, fw->data, fw->size);
411
412         release_firmware(fw);
413
414         kaweth->firmware_buf[2] = (data_len & 0xFF) - 7;
415         kaweth->firmware_buf[3] = data_len >> 8;
416         kaweth->firmware_buf[4] = type;
417         kaweth->firmware_buf[5] = interrupt;
418
419         dbg("High: %i, Low:%i", kaweth->firmware_buf[3],
420                    kaweth->firmware_buf[2]);
421
422         dbg("Downloading firmware at %p to kaweth device at %p",
423             fw->data, kaweth);
424         dbg("Firmware length: %d", data_len);
425
426         return kaweth_control(kaweth,
427                               usb_sndctrlpipe(kaweth->dev, 0),
428                               KAWETH_COMMAND_SCAN,
429                               USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
430                               0,
431                               0,
432                               (void *)kaweth->firmware_buf,
433                               data_len,
434                               KAWETH_CONTROL_TIMEOUT);
435 }
436
437 /****************************************************************
438  *     kaweth_trigger_firmware
439  ****************************************************************/
440 static int kaweth_trigger_firmware(struct kaweth_device *kaweth,
441                                    __u8 interrupt)
442 {
443         kaweth->firmware_buf[0] = 0xB6;
444         kaweth->firmware_buf[1] = 0xC3;
445         kaweth->firmware_buf[2] = 0x01;
446         kaweth->firmware_buf[3] = 0x00;
447         kaweth->firmware_buf[4] = 0x06;
448         kaweth->firmware_buf[5] = interrupt;
449         kaweth->firmware_buf[6] = 0x00;
450         kaweth->firmware_buf[7] = 0x00;
451
452         dbg("Triggering firmware");
453
454         return kaweth_control(kaweth,
455                               usb_sndctrlpipe(kaweth->dev, 0),
456                               KAWETH_COMMAND_SCAN,
457                               USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
458                               0,
459                               0,
460                               (void *)kaweth->firmware_buf,
461                               8,
462                               KAWETH_CONTROL_TIMEOUT);
463 }
464
465 /****************************************************************
466  *     kaweth_reset
467  ****************************************************************/
468 static int kaweth_reset(struct kaweth_device *kaweth)
469 {
470         int result;
471
472         dbg("kaweth_reset(%p)", kaweth);
473         result = kaweth_control(kaweth,
474                                 usb_sndctrlpipe(kaweth->dev, 0),
475                                 USB_REQ_SET_CONFIGURATION,
476                                 0,
477                                 kaweth->dev->config[0].desc.bConfigurationValue,
478                                 0,
479                                 NULL,
480                                 0,
481                                 KAWETH_CONTROL_TIMEOUT);
482
483         mdelay(10);
484
485         dbg("kaweth_reset() returns %d.",result);
486
487         return result;
488 }
489
490 static void kaweth_usb_receive(struct urb *);
491 static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t);
492
493 /****************************************************************
494         int_callback
495 *****************************************************************/
496
497 static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t mf)
498 {
499         int status;
500
501         status = usb_submit_urb (kaweth->irq_urb, mf);
502         if (unlikely(status == -ENOMEM)) {
503                 kaweth->suspend_lowmem_ctrl = 1;
504                 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
505         } else {
506                 kaweth->suspend_lowmem_ctrl = 0;
507         }
508
509         if (status)
510                 err ("can't resubmit intr, %s-%s, status %d",
511                                 kaweth->dev->bus->bus_name,
512                                 kaweth->dev->devpath, status);
513 }
514
515 static void int_callback(struct urb *u)
516 {
517         struct kaweth_device *kaweth = u->context;
518         int act_state;
519         int status = u->status;
520
521         switch (status) {
522         case 0:                 /* success */
523                 break;
524         case -ECONNRESET:       /* unlink */
525         case -ENOENT:
526         case -ESHUTDOWN:
527                 return;
528         /* -EPIPE:  should clear the halt */
529         default:                /* error */
530                 goto resubmit;
531         }
532
533         /* we check the link state to report changes */
534         if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) {
535                 if (act_state)
536                         netif_carrier_on(kaweth->net);
537                 else
538                         netif_carrier_off(kaweth->net);
539
540                 kaweth->linkstate = act_state;
541         }
542 resubmit:
543         kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC);
544 }
545
546 static void kaweth_resubmit_tl(struct work_struct *work)
547 {
548         struct kaweth_device *kaweth =
549                 container_of(work, struct kaweth_device, lowmem_work.work);
550
551         if (IS_BLOCKED(kaweth->status))
552                 return;
553
554         if (kaweth->suspend_lowmem_rx)
555                 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
556
557         if (kaweth->suspend_lowmem_ctrl)
558                 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
559 }
560
561
562 /****************************************************************
563  *     kaweth_resubmit_rx_urb
564  ****************************************************************/
565 static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth,
566                                                 gfp_t mem_flags)
567 {
568         int result;
569
570         usb_fill_bulk_urb(kaweth->rx_urb,
571                       kaweth->dev,
572                       usb_rcvbulkpipe(kaweth->dev, 1),
573                       kaweth->rx_buf,
574                       KAWETH_BUF_SIZE,
575                       kaweth_usb_receive,
576                       kaweth);
577         kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
578         kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle;
579
580         if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) {
581                 if (result == -ENOMEM) {
582                         kaweth->suspend_lowmem_rx = 1;
583                         schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
584                 }
585                 err("resubmitting rx_urb %d failed", result);
586         } else {
587                 kaweth->suspend_lowmem_rx = 0;
588         }
589
590         return result;
591 }
592
593 static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth);
594
595 /****************************************************************
596  *     kaweth_usb_receive
597  ****************************************************************/
598 static void kaweth_usb_receive(struct urb *urb)
599 {
600         struct kaweth_device *kaweth = urb->context;
601         struct net_device *net = kaweth->net;
602         int status = urb->status;
603
604         int count = urb->actual_length;
605         int count2 = urb->transfer_buffer_length;
606
607         __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf);
608
609         struct sk_buff *skb;
610
611         if(unlikely(status == -ECONNRESET || status == -ESHUTDOWN))
612         /* we are killed - set a flag and wake the disconnect handler */
613         {
614                 kaweth->end = 1;
615                 wake_up(&kaweth->term_wait);
616                 return;
617         }
618
619         spin_lock(&kaweth->device_lock);
620         if (IS_BLOCKED(kaweth->status)) {
621                 spin_unlock(&kaweth->device_lock);
622                 return;
623         }
624         spin_unlock(&kaweth->device_lock);
625
626         if(status && status != -EREMOTEIO && count != 1) {
627                 err("%s RX status: %d count: %d packet_len: %d",
628                            net->name,
629                            status,
630                            count,
631                            (int)pkt_len);
632                 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
633                 return;
634         }
635
636         if(kaweth->net && (count > 2)) {
637                 if(pkt_len > (count - 2)) {
638                         err("Packet length too long for USB frame (pkt_len: %x, count: %x)",pkt_len, count);
639                         err("Packet len & 2047: %x", pkt_len & 2047);
640                         err("Count 2: %x", count2);
641                         kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
642                         return;
643                 }
644
645                 if(!(skb = dev_alloc_skb(pkt_len+2))) {
646                         kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
647                         return;
648                 }
649
650                 skb_reserve(skb, 2);    /* Align IP on 16 byte boundaries */
651
652                 skb_copy_to_linear_data(skb, kaweth->rx_buf + 2, pkt_len);
653
654                 skb_put(skb, pkt_len);
655
656                 skb->protocol = eth_type_trans(skb, net);
657
658                 netif_rx(skb);
659
660                 kaweth->stats.rx_packets++;
661                 kaweth->stats.rx_bytes += pkt_len;
662         }
663
664         kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
665 }
666
667 /****************************************************************
668  *     kaweth_open
669  ****************************************************************/
670 static int kaweth_open(struct net_device *net)
671 {
672         struct kaweth_device *kaweth = netdev_priv(net);
673         int res;
674
675         dbg("Opening network device.");
676
677         res = usb_autopm_get_interface(kaweth->intf);
678         if (res) {
679                 err("Interface cannot be resumed.");
680                 return -EIO;
681         }
682         res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL);
683         if (res)
684                 goto err_out;
685
686         usb_fill_int_urb(
687                 kaweth->irq_urb,
688                 kaweth->dev,
689                 usb_rcvintpipe(kaweth->dev, 3),
690                 kaweth->intbuffer,
691                 INTBUFFERSIZE,
692                 int_callback,
693                 kaweth,
694                 250); /* overriding the descriptor */
695         kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle;
696         kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
697
698         res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL);
699         if (res) {
700                 usb_kill_urb(kaweth->rx_urb);
701                 goto err_out;
702         }
703         kaweth->opened = 1;
704
705         netif_start_queue(net);
706
707         kaweth_async_set_rx_mode(kaweth);
708         return 0;
709
710 err_out:
711         usb_autopm_enable(kaweth->intf);
712         return -EIO;
713 }
714
715 /****************************************************************
716  *     kaweth_kill_urbs
717  ****************************************************************/
718 static void kaweth_kill_urbs(struct kaweth_device *kaweth)
719 {
720         usb_kill_urb(kaweth->irq_urb);
721         usb_kill_urb(kaweth->rx_urb);
722         usb_kill_urb(kaweth->tx_urb);
723
724         cancel_delayed_work_sync(&kaweth->lowmem_work);
725
726         /* a scheduled work may have resubmitted,
727            we hit them again */
728         usb_kill_urb(kaweth->irq_urb);
729         usb_kill_urb(kaweth->rx_urb);
730 }
731
732 /****************************************************************
733  *     kaweth_close
734  ****************************************************************/
735 static int kaweth_close(struct net_device *net)
736 {
737         struct kaweth_device *kaweth = netdev_priv(net);
738
739         netif_stop_queue(net);
740         kaweth->opened = 0;
741
742         kaweth->status |= KAWETH_STATUS_CLOSING;
743
744         kaweth_kill_urbs(kaweth);
745
746         kaweth->status &= ~KAWETH_STATUS_CLOSING;
747
748         usb_autopm_enable(kaweth->intf);
749
750         return 0;
751 }
752
753 static void kaweth_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
754 {
755         struct kaweth_device *kaweth = netdev_priv(dev);
756
757         strlcpy(info->driver, driver_name, sizeof(info->driver));
758         usb_make_path(kaweth->dev, info->bus_info, sizeof (info->bus_info));
759 }
760
761 static u32 kaweth_get_link(struct net_device *dev)
762 {
763         struct kaweth_device *kaweth = netdev_priv(dev);
764
765         return kaweth->linkstate;
766 }
767
768 static struct ethtool_ops ops = {
769         .get_drvinfo    = kaweth_get_drvinfo,
770         .get_link       = kaweth_get_link
771 };
772
773 /****************************************************************
774  *     kaweth_usb_transmit_complete
775  ****************************************************************/
776 static void kaweth_usb_transmit_complete(struct urb *urb)
777 {
778         struct kaweth_device *kaweth = urb->context;
779         struct sk_buff *skb = kaweth->tx_skb;
780         int status = urb->status;
781
782         if (unlikely(status != 0))
783                 if (status != -ENOENT)
784                         dbg("%s: TX status %d.", kaweth->net->name, status);
785
786         netif_wake_queue(kaweth->net);
787         dev_kfree_skb_irq(skb);
788 }
789
790 /****************************************************************
791  *     kaweth_start_xmit
792  ****************************************************************/
793 static int kaweth_start_xmit(struct sk_buff *skb, struct net_device *net)
794 {
795         struct kaweth_device *kaweth = netdev_priv(net);
796         __le16 *private_header;
797
798         int res;
799
800         spin_lock(&kaweth->device_lock);
801
802         kaweth_async_set_rx_mode(kaweth);
803         netif_stop_queue(net);
804         if (IS_BLOCKED(kaweth->status)) {
805                 goto skip;
806         }
807
808         /* We now decide whether we can put our special header into the sk_buff */
809         if (skb_cloned(skb) || skb_headroom(skb) < 2) {
810                 /* no such luck - we make our own */
811                 struct sk_buff *copied_skb;
812                 copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC);
813                 dev_kfree_skb_irq(skb);
814                 skb = copied_skb;
815                 if (!copied_skb) {
816                         kaweth->stats.tx_errors++;
817                         netif_start_queue(net);
818                         spin_unlock(&kaweth->device_lock);
819                         return 0;
820                 }
821         }
822
823         private_header = (__le16 *)__skb_push(skb, 2);
824         *private_header = cpu_to_le16(skb->len-2);
825         kaweth->tx_skb = skb;
826
827         usb_fill_bulk_urb(kaweth->tx_urb,
828                       kaweth->dev,
829                       usb_sndbulkpipe(kaweth->dev, 2),
830                       private_header,
831                       skb->len,
832                       kaweth_usb_transmit_complete,
833                       kaweth);
834         kaweth->end = 0;
835
836         if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC)))
837         {
838                 dev_warn(&net->dev, "kaweth failed tx_urb %d\n", res);
839 skip:
840                 kaweth->stats.tx_errors++;
841
842                 netif_start_queue(net);
843                 dev_kfree_skb_irq(skb);
844         }
845         else
846         {
847                 kaweth->stats.tx_packets++;
848                 kaweth->stats.tx_bytes += skb->len;
849                 net->trans_start = jiffies;
850         }
851
852         spin_unlock(&kaweth->device_lock);
853
854         return 0;
855 }
856
857 /****************************************************************
858  *     kaweth_set_rx_mode
859  ****************************************************************/
860 static void kaweth_set_rx_mode(struct net_device *net)
861 {
862         struct kaweth_device *kaweth = netdev_priv(net);
863
864         __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED |
865                                      KAWETH_PACKET_FILTER_BROADCAST |
866                                      KAWETH_PACKET_FILTER_MULTICAST;
867
868         dbg("Setting Rx mode to %d", packet_filter_bitmap);
869
870         netif_stop_queue(net);
871
872         if (net->flags & IFF_PROMISC) {
873                 packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS;
874         }
875         else if ((net->mc_count) || (net->flags & IFF_ALLMULTI)) {
876                 packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST;
877         }
878
879         kaweth->packet_filter_bitmap = packet_filter_bitmap;
880         netif_wake_queue(net);
881 }
882
883 /****************************************************************
884  *     kaweth_async_set_rx_mode
885  ****************************************************************/
886 static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth)
887 {
888         __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap;
889         kaweth->packet_filter_bitmap = 0;
890         if (packet_filter_bitmap == 0)
891                 return;
892
893         {
894         int result;
895         result = kaweth_control(kaweth,
896                                 usb_sndctrlpipe(kaweth->dev, 0),
897                                 KAWETH_COMMAND_SET_PACKET_FILTER,
898                                 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
899                                 packet_filter_bitmap,
900                                 0,
901                                 (void *)&kaweth->scratch,
902                                 0,
903                                 KAWETH_CONTROL_TIMEOUT);
904
905         if(result < 0) {
906                 err("Failed to set Rx mode: %d", result);
907         }
908         else {
909                 dbg("Set Rx mode to %d", packet_filter_bitmap);
910         }
911         }
912 }
913
914 /****************************************************************
915  *     kaweth_netdev_stats
916  ****************************************************************/
917 static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev)
918 {
919         struct kaweth_device *kaweth = netdev_priv(dev);
920         return &kaweth->stats;
921 }
922
923 /****************************************************************
924  *     kaweth_tx_timeout
925  ****************************************************************/
926 static void kaweth_tx_timeout(struct net_device *net)
927 {
928         struct kaweth_device *kaweth = netdev_priv(net);
929
930         dev_warn(&net->dev, "%s: Tx timed out. Resetting.\n", net->name);
931         kaweth->stats.tx_errors++;
932         net->trans_start = jiffies;
933
934         usb_unlink_urb(kaweth->tx_urb);
935 }
936
937 /****************************************************************
938  *     kaweth_suspend
939  ****************************************************************/
940 static int kaweth_suspend(struct usb_interface *intf, pm_message_t message)
941 {
942         struct kaweth_device *kaweth = usb_get_intfdata(intf);
943         unsigned long flags;
944
945         dbg("Suspending device");
946         spin_lock_irqsave(&kaweth->device_lock, flags);
947         kaweth->status |= KAWETH_STATUS_SUSPENDING;
948         spin_unlock_irqrestore(&kaweth->device_lock, flags);
949
950         kaweth_kill_urbs(kaweth);
951         return 0;
952 }
953
954 /****************************************************************
955  *     kaweth_resume
956  ****************************************************************/
957 static int kaweth_resume(struct usb_interface *intf)
958 {
959         struct kaweth_device *kaweth = usb_get_intfdata(intf);
960         unsigned long flags;
961
962         dbg("Resuming device");
963         spin_lock_irqsave(&kaweth->device_lock, flags);
964         kaweth->status &= ~KAWETH_STATUS_SUSPENDING;
965         spin_unlock_irqrestore(&kaweth->device_lock, flags);
966
967         if (!kaweth->opened)
968                 return 0;
969         kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
970         kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
971
972         return 0;
973 }
974
975 /****************************************************************
976  *     kaweth_probe
977  ****************************************************************/
978 static int kaweth_probe(
979                 struct usb_interface *intf,
980                 const struct usb_device_id *id      /* from id_table */
981         )
982 {
983         struct usb_device *dev = interface_to_usbdev(intf);
984         struct kaweth_device *kaweth;
985         struct net_device *netdev;
986         const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
987         int result = 0;
988
989         dbg("Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x",
990                  dev->devnum,
991                  le16_to_cpu(dev->descriptor.idVendor),
992                  le16_to_cpu(dev->descriptor.idProduct),
993                  le16_to_cpu(dev->descriptor.bcdDevice));
994
995         dbg("Device at %p", dev);
996
997         dbg("Descriptor length: %x type: %x",
998                  (int)dev->descriptor.bLength,
999                  (int)dev->descriptor.bDescriptorType);
1000
1001         netdev = alloc_etherdev(sizeof(*kaweth));
1002         if (!netdev)
1003                 return -ENOMEM;
1004
1005         kaweth = netdev_priv(netdev);
1006         kaweth->dev = dev;
1007         kaweth->net = netdev;
1008
1009         spin_lock_init(&kaweth->device_lock);
1010         init_waitqueue_head(&kaweth->term_wait);
1011
1012         dbg("Resetting.");
1013
1014         kaweth_reset(kaweth);
1015
1016         /*
1017          * If high byte of bcdDevice is nonzero, firmware is already
1018          * downloaded. Don't try to do it again, or we'll hang the device.
1019          */
1020
1021         if (le16_to_cpu(dev->descriptor.bcdDevice) >> 8) {
1022                 dev_info(&intf->dev, "Firmware present in device.\n");
1023         } else {
1024                 /* Download the firmware */
1025                 dev_info(&intf->dev, "Downloading firmware...\n");
1026                 kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL);
1027                 if ((result = kaweth_download_firmware(kaweth,
1028                                                       "kaweth/new_code.bin",
1029                                                       100,
1030                                                       2)) < 0) {
1031                         err("Error downloading firmware (%d)", result);
1032                         goto err_fw;
1033                 }
1034
1035                 if ((result = kaweth_download_firmware(kaweth,
1036                                                       "kaweth/new_code_fix.bin",
1037                                                       100,
1038                                                       3)) < 0) {
1039                         err("Error downloading firmware fix (%d)", result);
1040                         goto err_fw;
1041                 }
1042
1043                 if ((result = kaweth_download_firmware(kaweth,
1044                                                       "kaweth/trigger_code.bin",
1045                                                       126,
1046                                                       2)) < 0) {
1047                         err("Error downloading trigger code (%d)", result);
1048                         goto err_fw;
1049
1050                 }
1051
1052                 if ((result = kaweth_download_firmware(kaweth,
1053                                                       "kaweth/trigger_code_fix.bin",
1054                                                       126,
1055                                                       3)) < 0) {
1056                         err("Error downloading trigger code fix (%d)", result);
1057                         goto err_fw;
1058                 }
1059
1060
1061                 if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
1062                         err("Error triggering firmware (%d)", result);
1063                         goto err_fw;
1064                 }
1065
1066                 /* Device will now disappear for a moment...  */
1067                 dev_info(&intf->dev, "Firmware loaded.  I'll be back...\n");
1068 err_fw:
1069                 free_page((unsigned long)kaweth->firmware_buf);
1070                 free_netdev(netdev);
1071                 return -EIO;
1072         }
1073
1074         result = kaweth_read_configuration(kaweth);
1075
1076         if(result < 0) {
1077                 err("Error reading configuration (%d), no net device created", result);
1078                 goto err_free_netdev;
1079         }
1080
1081         dev_info(&intf->dev, "Statistics collection: %x\n", kaweth->configuration.statistics_mask);
1082         dev_info(&intf->dev, "Multicast filter limit: %x\n", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
1083         dev_info(&intf->dev, "MTU: %d\n", le16_to_cpu(kaweth->configuration.segment_size));
1084         dev_info(&intf->dev, "Read MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
1085                  (int)kaweth->configuration.hw_addr[0],
1086                  (int)kaweth->configuration.hw_addr[1],
1087                  (int)kaweth->configuration.hw_addr[2],
1088                  (int)kaweth->configuration.hw_addr[3],
1089                  (int)kaweth->configuration.hw_addr[4],
1090                  (int)kaweth->configuration.hw_addr[5]);
1091
1092         if(!memcmp(&kaweth->configuration.hw_addr,
1093                    &bcast_addr,
1094                    sizeof(bcast_addr))) {
1095                 err("Firmware not functioning properly, no net device created");
1096                 goto err_free_netdev;
1097         }
1098
1099         if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
1100                 dbg("Error setting URB size");
1101                 goto err_free_netdev;
1102         }
1103
1104         if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
1105                 err("Error setting SOFS wait");
1106                 goto err_free_netdev;
1107         }
1108
1109         result = kaweth_set_receive_filter(kaweth,
1110                                            KAWETH_PACKET_FILTER_DIRECTED |
1111                                            KAWETH_PACKET_FILTER_BROADCAST |
1112                                            KAWETH_PACKET_FILTER_MULTICAST);
1113
1114         if(result < 0) {
1115                 err("Error setting receive filter");
1116                 goto err_free_netdev;
1117         }
1118
1119         dbg("Initializing net device.");
1120
1121         kaweth->intf = intf;
1122
1123         kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1124         if (!kaweth->tx_urb)
1125                 goto err_free_netdev;
1126         kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1127         if (!kaweth->rx_urb)
1128                 goto err_only_tx;
1129         kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
1130         if (!kaweth->irq_urb)
1131                 goto err_tx_and_rx;
1132
1133         kaweth->intbuffer = usb_buffer_alloc(   kaweth->dev,
1134                                                 INTBUFFERSIZE,
1135                                                 GFP_KERNEL,
1136                                                 &kaweth->intbufferhandle);
1137         if (!kaweth->intbuffer)
1138                 goto err_tx_and_rx_and_irq;
1139         kaweth->rx_buf = usb_buffer_alloc(      kaweth->dev,
1140                                                 KAWETH_BUF_SIZE,
1141                                                 GFP_KERNEL,
1142                                                 &kaweth->rxbufferhandle);
1143         if (!kaweth->rx_buf)
1144                 goto err_all_but_rxbuf;
1145
1146         memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr));
1147         memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr,
1148                sizeof(kaweth->configuration.hw_addr));
1149
1150         netdev->open = kaweth_open;
1151         netdev->stop = kaweth_close;
1152
1153         netdev->watchdog_timeo = KAWETH_TX_TIMEOUT;
1154         netdev->tx_timeout = kaweth_tx_timeout;
1155
1156         netdev->hard_start_xmit = kaweth_start_xmit;
1157         netdev->set_multicast_list = kaweth_set_rx_mode;
1158         netdev->get_stats = kaweth_netdev_stats;
1159         netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size);
1160         SET_ETHTOOL_OPS(netdev, &ops);
1161
1162         /* kaweth is zeroed as part of alloc_netdev */
1163
1164         INIT_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl);
1165
1166         usb_set_intfdata(intf, kaweth);
1167
1168 #if 0
1169 // dma_supported() is deeply broken on almost all architectures
1170         if (dma_supported (&intf->dev, 0xffffffffffffffffULL))
1171                 kaweth->net->features |= NETIF_F_HIGHDMA;
1172 #endif
1173
1174         SET_NETDEV_DEV(netdev, &intf->dev);
1175         if (register_netdev(netdev) != 0) {
1176                 err("Error registering netdev.");
1177                 goto err_intfdata;
1178         }
1179
1180         dev_info(&intf->dev, "kaweth interface created at %s\n",
1181                  kaweth->net->name);
1182
1183         dbg("Kaweth probe returning.");
1184
1185         return 0;
1186
1187 err_intfdata:
1188         usb_set_intfdata(intf, NULL);
1189         usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1190 err_all_but_rxbuf:
1191         usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1192 err_tx_and_rx_and_irq:
1193         usb_free_urb(kaweth->irq_urb);
1194 err_tx_and_rx:
1195         usb_free_urb(kaweth->rx_urb);
1196 err_only_tx:
1197         usb_free_urb(kaweth->tx_urb);
1198 err_free_netdev:
1199         free_netdev(netdev);
1200
1201         return -EIO;
1202 }
1203
1204 /****************************************************************
1205  *     kaweth_disconnect
1206  ****************************************************************/
1207 static void kaweth_disconnect(struct usb_interface *intf)
1208 {
1209         struct kaweth_device *kaweth = usb_get_intfdata(intf);
1210         struct net_device *netdev;
1211
1212         dev_info(&intf->dev, "Unregistering\n");
1213
1214         usb_set_intfdata(intf, NULL);
1215         if (!kaweth) {
1216                 dev_warn(&intf->dev, "unregistering non-existant device\n");
1217                 return;
1218         }
1219         netdev = kaweth->net;
1220
1221         dbg("Unregistering net device");
1222         unregister_netdev(netdev);
1223
1224         usb_free_urb(kaweth->rx_urb);
1225         usb_free_urb(kaweth->tx_urb);
1226         usb_free_urb(kaweth->irq_urb);
1227
1228         usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1229         usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1230
1231         free_netdev(netdev);
1232 }
1233
1234
1235 // FIXME this completion stuff is a modified clone of
1236 // an OLD version of some stuff in usb.c ...
1237 struct usb_api_data {
1238         wait_queue_head_t wqh;
1239         int done;
1240 };
1241
1242 /*-------------------------------------------------------------------*
1243  * completion handler for compatibility wrappers (sync control/bulk) *
1244  *-------------------------------------------------------------------*/
1245 static void usb_api_blocking_completion(struct urb *urb)
1246 {
1247         struct usb_api_data *awd = (struct usb_api_data *)urb->context;
1248
1249         awd->done=1;
1250         wake_up(&awd->wqh);
1251 }
1252
1253 /*-------------------------------------------------------------------*
1254  *                         COMPATIBILITY STUFF                       *
1255  *-------------------------------------------------------------------*/
1256
1257 // Starts urb and waits for completion or timeout
1258 static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length)
1259 {
1260         struct usb_api_data awd;
1261         int status;
1262
1263         init_waitqueue_head(&awd.wqh);
1264         awd.done = 0;
1265
1266         urb->context = &awd;
1267         status = usb_submit_urb(urb, GFP_NOIO);
1268         if (status) {
1269                 // something went wrong
1270                 usb_free_urb(urb);
1271                 return status;
1272         }
1273
1274         if (!wait_event_timeout(awd.wqh, awd.done, timeout)) {
1275                 // timeout
1276                 dev_warn(&urb->dev->dev, "usb_control/bulk_msg: timeout\n");
1277                 usb_kill_urb(urb);  // remove urb safely
1278                 status = -ETIMEDOUT;
1279         }
1280         else {
1281                 status = urb->status;
1282         }
1283
1284         if (actual_length) {
1285                 *actual_length = urb->actual_length;
1286         }
1287
1288         usb_free_urb(urb);
1289         return status;
1290 }
1291
1292 /*-------------------------------------------------------------------*/
1293 // returns status (negative) or length (positive)
1294 static int kaweth_internal_control_msg(struct usb_device *usb_dev,
1295                                        unsigned int pipe,
1296                                        struct usb_ctrlrequest *cmd, void *data,
1297                                        int len, int timeout)
1298 {
1299         struct urb *urb;
1300         int retv;
1301         int length = 0; /* shut up GCC */
1302
1303         urb = usb_alloc_urb(0, GFP_NOIO);
1304         if (!urb)
1305                 return -ENOMEM;
1306
1307         usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data,
1308                          len, usb_api_blocking_completion, NULL);
1309
1310         retv = usb_start_wait_urb(urb, timeout, &length);
1311         if (retv < 0) {
1312                 return retv;
1313         }
1314         else {
1315                 return length;
1316         }
1317 }
1318
1319
1320 /****************************************************************
1321  *     kaweth_init
1322  ****************************************************************/
1323 static int __init kaweth_init(void)
1324 {
1325         dbg("Driver loading");
1326         return usb_register(&kaweth_driver);
1327 }
1328
1329 /****************************************************************
1330  *     kaweth_exit
1331  ****************************************************************/
1332 static void __exit kaweth_exit(void)
1333 {
1334         usb_deregister(&kaweth_driver);
1335 }
1336
1337 module_init(kaweth_init);
1338 module_exit(kaweth_exit);
1339
1340
1341
1342
1343
1344
1345
1346
1347