1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48#include <linux/module.h>
49#include <linux/sched.h>
50#include <linux/slab.h>
51#include <linux/string.h>
52#include <linux/init.h>
53#include <linux/delay.h>
54#include <linux/netdevice.h>
55#include <linux/etherdevice.h>
56#include <linux/usb.h>
57#include <linux/types.h>
58#include <linux/ethtool.h>
59#include <asm/uaccess.h>
60#include <asm/semaphore.h>
61#include <asm/byteorder.h>
62
63#define DEBUG
64
65#ifdef DEBUG
66#define kaweth_dbg(format, arg...) printk(KERN_DEBUG __FILE__ ": " format "\n" ,##arg)
67#else
68#define kaweth_dbg(format, arg...) do {} while (0)
69#endif
70#define kaweth_err(format, arg...) printk(KERN_ERR __FILE__ ": " format "\n" ,##arg)
71#define kaweth_info(format, arg...) printk(KERN_INFO __FILE__ ": " format "\n" , ##arg)
72#define kaweth_warn(format, arg...) printk(KERN_WARNING __FILE__ ": " format "\n" , ##arg)
73
74
75#include "kawethfw.h"
76
77#define KAWETH_MTU 1500
78#define KAWETH_BUF_SIZE 1664
79#define KAWETH_TX_TIMEOUT (5 * HZ)
80#define KAWETH_SCRATCH_SIZE 32
81#define KAWETH_FIRMWARE_BUF_SIZE 4096
82#define KAWETH_CONTROL_TIMEOUT (30 * HZ)
83
84#define KAWETH_STATUS_BROKEN 0x0000001
85#define KAWETH_STATUS_CLOSING 0x0000002
86
87#define KAWETH_PACKET_FILTER_PROMISCUOUS 0x01
88#define KAWETH_PACKET_FILTER_ALL_MULTICAST 0x02
89#define KAWETH_PACKET_FILTER_DIRECTED 0x04
90#define KAWETH_PACKET_FILTER_BROADCAST 0x08
91#define KAWETH_PACKET_FILTER_MULTICAST 0x10
92
93
94#define KAWETH_COMMAND_GET_ETHERNET_DESC 0x00
95#define KAWETH_COMMAND_MULTICAST_FILTERS 0x01
96#define KAWETH_COMMAND_SET_PACKET_FILTER 0x02
97#define KAWETH_COMMAND_STATISTICS 0x03
98#define KAWETH_COMMAND_SET_TEMP_MAC 0x06
99#define KAWETH_COMMAND_GET_TEMP_MAC 0x07
100#define KAWETH_COMMAND_SET_URB_SIZE 0x08
101#define KAWETH_COMMAND_SET_SOFS_WAIT 0x09
102#define KAWETH_COMMAND_SCAN 0xFF
103
104#define KAWETH_SOFS_TO_WAIT 0x05
105
106#define INTBUFFERSIZE 4
107
108#define STATE_OFFSET 0
109#define STATE_MASK 0x40
110#define STATE_SHIFT 5
111
112
113MODULE_AUTHOR("Michael Zappe <zapman@interlan.net>, Stephane Alnet <stephane@u-picardie.fr>, Brad Hards <bhards@bigpond.net.au> and Oliver Neukum <oliver@neukum.org>");
114MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver");
115MODULE_LICENSE("GPL");
116
117static const char driver_name[] = "kaweth";
118
119static void *kaweth_probe(
120 struct usb_device *dev,
121 unsigned ifnum,
122 const struct usb_device_id *id
123 );
124static void kaweth_disconnect(struct usb_device *dev, void *ptr);
125int kaweth_internal_control_msg(struct usb_device *usb_dev, unsigned int pipe,
126 struct usb_ctrlrequest *cmd, void *data,
127 int len, int timeout);
128
129
130
131
132static struct usb_device_id usb_klsi_table[] = {
133 { USB_DEVICE(0x03e8, 0x0008) },
134 { USB_DEVICE(0x04bb, 0x0901) },
135 { USB_DEVICE(0x0506, 0x03e8) },
136 { USB_DEVICE(0x0506, 0x11f8) },
137 { USB_DEVICE(0x0557, 0x2002) },
138 { USB_DEVICE(0x0557, 0x4000) },
139 { USB_DEVICE(0x0565, 0x0002) },
140 { USB_DEVICE(0x0565, 0x0003) },
141 { USB_DEVICE(0x0565, 0x0005) },
142 { USB_DEVICE(0x05e9, 0x0008) },
143 { USB_DEVICE(0x05e9, 0x0009) },
144 { USB_DEVICE(0x066b, 0x2202) },
145 { USB_DEVICE(0x06e1, 0x0008) },
146 { USB_DEVICE(0x06e1, 0x0009) },
147 { USB_DEVICE(0x0707, 0x0100) },
148 { USB_DEVICE(0x0785, 0x0002) },
149 { USB_DEVICE(0x07aa, 0x0001) },
150 { USB_DEVICE(0x07b8, 0x4000) },
151 { USB_DEVICE(0x0846, 0x1001) },
152 { USB_DEVICE(0x0846, 0x1002) },
153 { USB_DEVICE(0x085a, 0x0008) },
154 { USB_DEVICE(0x085a, 0x0009) },
155 { USB_DEVICE(0x087d, 0x5704) },
156 { USB_DEVICE(0x0951, 0x0008) },
157 { USB_DEVICE(0x095a, 0x3003) },
158 { USB_DEVICE(0x10bd, 0x1427) },
159 { USB_DEVICE(0x1342, 0x0204) },
160 { USB_DEVICE(0x13d2, 0x0400) },
161 { USB_DEVICE(0x1485, 0x0001) },
162 { USB_DEVICE(0x1645, 0x0005) },
163 { USB_DEVICE(0x1645, 0x0008) },
164 { USB_DEVICE(0x1645, 0x8005) },
165 { USB_DEVICE(0x2001, 0x4000) },
166 {}
167};
168
169MODULE_DEVICE_TABLE (usb, usb_klsi_table);
170
171
172
173
174static struct usb_driver kaweth_driver = {
175 .name = driver_name,
176 .probe = kaweth_probe,
177 .disconnect = kaweth_disconnect,
178 .id_table = usb_klsi_table,
179};
180
181typedef __u8 eth_addr_t[6];
182
183
184
185
186struct usb_eth_dev {
187 char *name;
188 __u16 vendor;
189 __u16 device;
190 void *pdata;
191};
192
193
194
195
196
197struct kaweth_ethernet_configuration
198{
199 __u8 size;
200 __u8 reserved1;
201 __u8 reserved2;
202 eth_addr_t hw_addr;
203 __u32 statistics_mask;
204 __u16 segment_size;
205 __u16 max_multicast_filters;
206 __u8 reserved3;
207} __attribute__ ((packed));
208
209
210
211
212struct kaweth_device
213{
214 spinlock_t device_lock;
215
216 __u32 status;
217 int end;
218 int removed;
219 int suspend_lowmem;
220 int linkstate;
221
222 struct usb_device *dev;
223 struct net_device *net;
224 wait_queue_head_t term_wait;
225
226 struct urb *rx_urb;
227 struct urb *tx_urb;
228 struct urb *irq_urb;
229
230 struct sk_buff *tx_skb;
231
232 __u8 *firmware_buf;
233 __u8 scratch[KAWETH_SCRATCH_SIZE];
234 __u8 rx_buf[KAWETH_BUF_SIZE];
235 __u8 intbuffer[INTBUFFERSIZE];
236 __u16 packet_filter_bitmap;
237
238 struct kaweth_ethernet_configuration configuration;
239
240 struct net_device_stats stats;
241} __attribute__ ((packed));
242
243
244
245
246
247static int kaweth_control(struct kaweth_device *kaweth,
248 unsigned int pipe,
249 __u8 request,
250 __u8 requesttype,
251 __u16 value,
252 __u16 index,
253 void *data,
254 __u16 size,
255 int timeout)
256{
257 struct usb_ctrlrequest *dr;
258
259 kaweth_dbg("kaweth_control()");
260
261 if(in_interrupt()) {
262 kaweth_dbg("in_interrupt()");
263 return -EBUSY;
264 }
265
266 dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
267
268 if (!dr) {
269 kaweth_dbg("kmalloc() failed");
270 return -ENOMEM;
271 }
272
273 dr->bRequestType= requesttype;
274 dr->bRequest = request;
275 dr->wValue = cpu_to_le16p(&value);
276 dr->wIndex = cpu_to_le16p(&index);
277 dr->wLength = cpu_to_le16p(&size);
278
279 return kaweth_internal_control_msg(kaweth->dev,
280 pipe,
281 dr,
282 data,
283 size,
284 timeout);
285}
286
287
288
289
290static int kaweth_read_configuration(struct kaweth_device *kaweth)
291{
292 int retval;
293
294 kaweth_dbg("Reading kaweth configuration");
295
296 retval = kaweth_control(kaweth,
297 usb_rcvctrlpipe(kaweth->dev, 0),
298 KAWETH_COMMAND_GET_ETHERNET_DESC,
299 USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
300 0,
301 0,
302 (void *)&kaweth->configuration,
303 sizeof(kaweth->configuration),
304 KAWETH_CONTROL_TIMEOUT);
305
306 return retval;
307}
308
309
310
311
312static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size)
313{
314 int retval;
315
316 kaweth_dbg("Setting URB size to %d", (unsigned)urb_size);
317
318 retval = kaweth_control(kaweth,
319 usb_sndctrlpipe(kaweth->dev, 0),
320 KAWETH_COMMAND_SET_URB_SIZE,
321 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
322 urb_size,
323 0,
324 (void *)&kaweth->scratch,
325 0,
326 KAWETH_CONTROL_TIMEOUT);
327
328 return retval;
329}
330
331
332
333
334static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait)
335{
336 int retval;
337
338 kaweth_dbg("Set SOFS wait to %d", (unsigned)sofs_wait);
339
340 retval = kaweth_control(kaweth,
341 usb_sndctrlpipe(kaweth->dev, 0),
342 KAWETH_COMMAND_SET_SOFS_WAIT,
343 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
344 sofs_wait,
345 0,
346 (void *)&kaweth->scratch,
347 0,
348 KAWETH_CONTROL_TIMEOUT);
349
350 return retval;
351}
352
353
354
355
356static int kaweth_set_receive_filter(struct kaweth_device *kaweth,
357 __u16 receive_filter)
358{
359 int retval;
360
361 kaweth_dbg("Set receive filter to %d", (unsigned)receive_filter);
362
363 retval = kaweth_control(kaweth,
364 usb_sndctrlpipe(kaweth->dev, 0),
365 KAWETH_COMMAND_SET_PACKET_FILTER,
366 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
367 receive_filter,
368 0,
369 (void *)&kaweth->scratch,
370 0,
371 KAWETH_CONTROL_TIMEOUT);
372
373 return retval;
374}
375
376
377
378
379static int kaweth_download_firmware(struct kaweth_device *kaweth,
380 __u8 *data,
381 __u16 data_len,
382 __u8 interrupt,
383 __u8 type)
384{
385 if(data_len > KAWETH_FIRMWARE_BUF_SIZE) {
386 kaweth_err("Firmware too big: %d", data_len);
387 return -ENOSPC;
388 }
389
390 memcpy(kaweth->firmware_buf, data, data_len);
391
392 kaweth->firmware_buf[2] = (data_len & 0xFF) - 7;
393 kaweth->firmware_buf[3] = data_len >> 8;
394 kaweth->firmware_buf[4] = type;
395 kaweth->firmware_buf[5] = interrupt;
396
397 kaweth_dbg("High: %i, Low:%i", kaweth->firmware_buf[3],
398 kaweth->firmware_buf[2]);
399
400 kaweth_dbg("Downloading firmware at %p to kaweth device at %p",
401 data,
402 kaweth);
403 kaweth_dbg("Firmware length: %d", data_len);
404
405 return kaweth_control(kaweth,
406 usb_sndctrlpipe(kaweth->dev, 0),
407 KAWETH_COMMAND_SCAN,
408 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
409 0,
410 0,
411 (void *)kaweth->firmware_buf,
412 data_len,
413 KAWETH_CONTROL_TIMEOUT);
414}
415
416
417
418
419static int kaweth_trigger_firmware(struct kaweth_device *kaweth,
420 __u8 interrupt)
421{
422 kaweth->firmware_buf[0] = 0xB6;
423 kaweth->firmware_buf[1] = 0xC3;
424 kaweth->firmware_buf[2] = 0x01;
425 kaweth->firmware_buf[3] = 0x00;
426 kaweth->firmware_buf[4] = 0x06;
427 kaweth->firmware_buf[5] = interrupt;
428 kaweth->firmware_buf[6] = 0x00;
429 kaweth->firmware_buf[7] = 0x00;
430
431 kaweth_dbg("Triggering firmware");
432
433 return kaweth_control(kaweth,
434 usb_sndctrlpipe(kaweth->dev, 0),
435 KAWETH_COMMAND_SCAN,
436 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
437 0,
438 0,
439 (void *)kaweth->firmware_buf,
440 8,
441 KAWETH_CONTROL_TIMEOUT);
442}
443
444
445
446
447static int kaweth_reset(struct kaweth_device *kaweth)
448{
449 int result;
450
451 kaweth_dbg("kaweth_reset(%p)", kaweth);
452 result = kaweth_control(kaweth,
453 usb_sndctrlpipe(kaweth->dev, 0),
454 USB_REQ_SET_CONFIGURATION,
455 0,
456 kaweth->dev->config[0].bConfigurationValue,
457 0,
458 NULL,
459 0,
460 KAWETH_CONTROL_TIMEOUT);
461
462 udelay(10000);
463
464 kaweth_dbg("kaweth_reset() returns %d.",result);
465
466 return result;
467}
468
469static void kaweth_usb_receive(struct urb *);
470static void kaweth_resubmit_rx_urb(struct kaweth_device *);
471
472
473
474
475static void int_callback(struct urb *u)
476{
477 struct kaweth_device *kaweth = u->context;
478 int act_state;
479
480
481 if (kaweth->suspend_lowmem)
482 kaweth_resubmit_rx_urb(kaweth);
483
484
485 if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) {
486 if (!act_state)
487 netif_carrier_on(kaweth->net);
488 else
489 netif_carrier_off(kaweth->net);
490
491 kaweth->linkstate = act_state;
492 }
493
494}
495
496
497
498
499static void kaweth_resubmit_rx_urb(struct kaweth_device *kaweth)
500{
501 int result;
502 long flags;
503
504 FILL_BULK_URB(kaweth->rx_urb,
505 kaweth->dev,
506 usb_rcvbulkpipe(kaweth->dev, 1),
507 kaweth->rx_buf,
508 KAWETH_BUF_SIZE,
509 kaweth_usb_receive,
510 kaweth);
511
512 spin_lock_irqsave(&kaweth->device_lock, flags);
513 if (!kaweth->removed) {
514 if((result = usb_submit_urb(kaweth->rx_urb))) {
515 if (result == -ENOMEM)
516 kaweth->suspend_lowmem = 1;
517 kaweth_err("resubmitting rx_urb %d failed", result);
518 } else {
519 kaweth->suspend_lowmem = 0;
520 }
521 }
522 spin_unlock_irqrestore(&kaweth->device_lock, flags);
523}
524
525static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth);
526
527
528
529
530static void kaweth_usb_receive(struct urb *urb)
531{
532 struct kaweth_device *kaweth = urb->context;
533 struct net_device *net = kaweth->net;
534
535 int count = urb->actual_length;
536 int count2 = urb->transfer_buffer_length;
537
538 __u16 pkt_len = le16_to_cpup((u16 *)kaweth->rx_buf);
539
540 struct sk_buff *skb;
541
542 if(urb->status == -ECONNRESET || urb->status == -ECONNABORTED)
543
544 {
545 kaweth->end = 1;
546 wake_up(&kaweth->term_wait);
547 return;
548 }
549
550 if (kaweth->status & KAWETH_STATUS_CLOSING)
551 return;
552
553 if(urb->status && urb->status != -EREMOTEIO && count != 1) {
554 kaweth_err("%s RX status: %d count: %d packet_len: %d",
555 net->name,
556 urb->status,
557 count,
558 (int)pkt_len);
559 kaweth_resubmit_rx_urb(kaweth);
560 return;
561 }
562
563 if(kaweth->net && (count > 2)) {
564 if(pkt_len > (count - 2)) {
565 kaweth_err("Packet length too long for USB frame (pkt_len: %x, count: %x)",pkt_len, count);
566 kaweth_err("Packet len & 2047: %x", pkt_len & 2047);
567 kaweth_err("Count 2: %x", count2);
568 kaweth_resubmit_rx_urb(kaweth);
569 return;
570 }
571
572 if(!(skb = dev_alloc_skb(pkt_len+2))) {
573 kaweth_resubmit_rx_urb(kaweth);
574 return;
575 }
576
577 skb_reserve(skb, 2);
578
579 skb->dev = net;
580
581 eth_copy_and_sum(skb, kaweth->rx_buf + 2, pkt_len, 0);
582
583 skb_put(skb, pkt_len);
584
585 skb->protocol = eth_type_trans(skb, net);
586
587 netif_rx(skb);
588
589 kaweth->stats.rx_packets++;
590 kaweth->stats.rx_bytes += pkt_len;
591 }
592
593 kaweth_resubmit_rx_urb(kaweth);
594}
595
596
597
598
599static int kaweth_open(struct net_device *net)
600{
601 struct kaweth_device *kaweth = (struct kaweth_device *)net->priv;
602
603 kaweth_dbg("Dev usage: %d", kaweth->dev->refcnt.counter);
604
605 kaweth_dbg("Opening network device.");
606
607 MOD_INC_USE_COUNT;
608
609 kaweth_resubmit_rx_urb(kaweth);
610
611 FILL_INT_URB(
612 kaweth->irq_urb,
613 kaweth->dev,
614 usb_rcvintpipe(kaweth->dev, 3),
615 kaweth->intbuffer,
616 INTBUFFERSIZE,
617 int_callback,
618 kaweth,
619 HZ/4);
620
621 usb_submit_urb(kaweth->irq_urb);
622
623 netif_start_queue(net);
624
625 kaweth_async_set_rx_mode(kaweth);
626 return 0;
627}
628
629
630
631
632static int kaweth_close(struct net_device *net)
633{
634 struct kaweth_device *kaweth = net->priv;
635
636 netif_stop_queue(net);
637
638 spin_lock_irq(&kaweth->device_lock);
639 kaweth->status |= KAWETH_STATUS_CLOSING;
640 spin_unlock_irq(&kaweth->device_lock);
641
642 usb_unlink_urb(kaweth->irq_urb);
643 usb_unlink_urb(kaweth->rx_urb);
644
645 kaweth->status &= ~KAWETH_STATUS_CLOSING;
646
647 MOD_DEC_USE_COUNT;
648
649 printk("Dev usage: %d", kaweth->dev->refcnt.counter);
650
651 return 0;
652}
653
654static int netdev_ethtool_ioctl(struct net_device *dev, void *useraddr)
655{
656 u32 ethcmd;
657
658 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
659 return -EFAULT;
660
661 switch (ethcmd) {
662 case ETHTOOL_GDRVINFO: {
663 struct ethtool_drvinfo info = {ETHTOOL_GDRVINFO};
664 strncpy(info.driver, driver_name, sizeof(info.driver)-1);
665 if (copy_to_user(useraddr, &info, sizeof(info)))
666 return -EFAULT;
667 return 0;
668 }
669 }
670
671 return -EOPNOTSUPP;
672}
673
674
675
676
677static int kaweth_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
678{
679 switch (cmd) {
680 case SIOCETHTOOL:
681 return netdev_ethtool_ioctl(net, (void *) rq->ifr_data);
682 }
683 return -EOPNOTSUPP;
684}
685
686
687
688
689static void kaweth_usb_transmit_complete(struct urb *urb)
690{
691 struct kaweth_device *kaweth = urb->context;
692 struct sk_buff *skb = kaweth->tx_skb;
693
694 if (urb->status != 0)
695 kaweth_dbg("%s: TX status %d.", kaweth->net->name, urb->status);
696
697 netif_wake_queue(kaweth->net);
698 dev_kfree_skb_irq(skb);
699}
700
701
702
703
704static int kaweth_start_xmit(struct sk_buff *skb, struct net_device *net)
705{
706 struct kaweth_device *kaweth = net->priv;
707 u16 *private_header;
708
709 int res;
710
711 spin_lock(&kaweth->device_lock);
712
713 if (kaweth->removed) {
714
715 spin_unlock(&kaweth->device_lock);
716 dev_kfree_skb_irq(skb);
717 return 0;
718 }
719
720 kaweth_async_set_rx_mode(kaweth);
721 netif_stop_queue(net);
722
723
724 if (skb_cloned(skb) || skb_headroom(skb) < 2) {
725
726 struct sk_buff *copied_skb;
727 copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC);
728 dev_kfree_skb_irq(skb);
729 skb = copied_skb;
730 if (!copied_skb) {
731 kaweth->stats.tx_errors++;
732 netif_start_queue(net);
733 spin_unlock(&kaweth->device_lock);
734 return 0;
735 }
736 }
737
738 private_header = (u16 *)__skb_push(skb, 2);
739 *private_header = cpu_to_le16(skb->len-2);
740 kaweth->tx_skb = skb;
741
742 FILL_BULK_URB(kaweth->tx_urb,
743 kaweth->dev,
744 usb_sndbulkpipe(kaweth->dev, 2),
745 private_header,
746 skb->len,
747 kaweth_usb_transmit_complete,
748 kaweth);
749 kaweth->end = 0;
750 kaweth->tx_urb->transfer_flags |= USB_ASYNC_UNLINK;
751
752 if((res = usb_submit_urb(kaweth->tx_urb)))
753 {
754 kaweth_warn("kaweth failed tx_urb %d", res);
755 kaweth->stats.tx_errors++;
756
757 netif_start_queue(net);
758 dev_kfree_skb_irq(skb);
759 }
760 else
761 {
762 kaweth->stats.tx_packets++;
763 kaweth->stats.tx_bytes += skb->len;
764 net->trans_start = jiffies;
765 }
766
767 spin_unlock(&kaweth->device_lock);
768
769 return 0;
770}
771
772
773
774
775static void kaweth_set_rx_mode(struct net_device *net)
776{
777 struct kaweth_device *kaweth = net->priv;
778
779 __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED |
780 KAWETH_PACKET_FILTER_BROADCAST |
781 KAWETH_PACKET_FILTER_MULTICAST;
782
783 kaweth_dbg("Setting Rx mode to %d", packet_filter_bitmap);
784
785 netif_stop_queue(net);
786
787 if (net->flags & IFF_PROMISC) {
788 packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS;
789 }
790 else if ((net->mc_count) || (net->flags & IFF_ALLMULTI)) {
791 packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST;
792 }
793
794 kaweth->packet_filter_bitmap = packet_filter_bitmap;
795 netif_wake_queue(net);
796}
797
798
799
800
801static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth)
802{
803 __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap;
804 kaweth->packet_filter_bitmap = 0;
805 if(packet_filter_bitmap == 0) return;
806
807 {
808 int result;
809 result = kaweth_control(kaweth,
810 usb_sndctrlpipe(kaweth->dev, 0),
811 KAWETH_COMMAND_SET_PACKET_FILTER,
812 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
813 packet_filter_bitmap,
814 0,
815 (void *)&kaweth->scratch,
816 0,
817 KAWETH_CONTROL_TIMEOUT);
818
819 if(result < 0) {
820 kaweth_err("Failed to set Rx mode: %d", result);
821 }
822 else {
823 kaweth_dbg("Set Rx mode to %d", packet_filter_bitmap);
824 }
825 }
826}
827
828
829
830
831static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev)
832{
833 return &((struct kaweth_device *)dev->priv)->stats;
834}
835
836
837
838
839static void kaweth_tx_timeout(struct net_device *net)
840{
841 struct kaweth_device *kaweth = net->priv;
842
843 kaweth_warn("%s: Tx timed out. Resetting.", net->name);
844 kaweth->stats.tx_errors++;
845 net->trans_start = jiffies;
846
847 usb_unlink_urb(kaweth->tx_urb);
848}
849
850
851
852
853static void *kaweth_probe(
854 struct usb_device *dev,
855 unsigned ifnum,
856 const struct usb_device_id *id
857 )
858{
859 struct kaweth_device *kaweth;
860 const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
861 int result = 0;
862
863 kaweth_dbg("Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x",
864 dev->devnum,
865 (int)dev->descriptor.idVendor,
866 (int)dev->descriptor.idProduct,
867 (int)dev->descriptor.bcdDevice);
868
869 kaweth_dbg("Device at %p", dev);
870
871 kaweth_dbg("Descriptor length: %x type: %x",
872 (int)dev->descriptor.bLength,
873 (int)dev->descriptor.bDescriptorType);
874
875 if(!(kaweth = kmalloc(sizeof(struct kaweth_device), GFP_KERNEL))) {
876 kaweth_dbg("out of memory allocating device structure\n");
877 return NULL;
878 }
879
880 memset(kaweth, 0, sizeof(struct kaweth_device));
881
882 kaweth->dev = dev;
883 spin_lock_init(&kaweth->device_lock);
884 init_waitqueue_head(&kaweth->term_wait);
885
886 kaweth_dbg("Resetting.");
887
888 kaweth_reset(kaweth);
889
890
891
892
893
894
895 if (dev->descriptor.bcdDevice >> 8) {
896 kaweth_info("Firmware present in device.");
897 } else {
898
899 kaweth_info("Downloading firmware...");
900 kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL);
901 if ((result = kaweth_download_firmware(kaweth,
902 kaweth_new_code,
903 len_kaweth_new_code,
904 100,
905 2)) < 0) {
906 kaweth_err("Error downloading firmware (%d)", result);
907 free_page((unsigned long)kaweth->firmware_buf);
908 kfree(kaweth);
909 return NULL;
910 }
911
912 if ((result = kaweth_download_firmware(kaweth,
913 kaweth_new_code_fix,
914 len_kaweth_new_code_fix,
915 100,
916 3)) < 0) {
917 kaweth_err("Error downloading firmware fix (%d)", result);
918 free_page((unsigned long)kaweth->firmware_buf);
919 kfree(kaweth);
920 return NULL;
921 }
922
923 if ((result = kaweth_download_firmware(kaweth,
924 kaweth_trigger_code,
925 len_kaweth_trigger_code,
926 126,
927 2)) < 0) {
928 kaweth_err("Error downloading trigger code (%d)", result);
929 free_page((unsigned long)kaweth->firmware_buf);
930 kfree(kaweth);
931 return NULL;
932 }
933
934 if ((result = kaweth_download_firmware(kaweth,
935 kaweth_trigger_code_fix,
936 len_kaweth_trigger_code_fix,
937 126,
938 3)) < 0) {
939 kaweth_err("Error downloading trigger code fix (%d)", result);
940 free_page((unsigned long)kaweth->firmware_buf);
941 kfree(kaweth);
942 return NULL;
943 }
944
945
946 if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
947 kaweth_err("Error triggering firmware (%d)", result);
948 free_page((unsigned long)kaweth->firmware_buf);
949 kfree(kaweth);
950 return NULL;
951 }
952
953
954 kaweth_info("Firmware loaded. I'll be back...");
955 free_page((unsigned long)kaweth->firmware_buf);
956 kfree(kaweth);
957 return NULL;
958 }
959
960 result = kaweth_read_configuration(kaweth);
961
962 if(result < 0) {
963 kaweth_err("Error reading configuration (%d), no net device created", result);
964 kfree(kaweth);
965 return NULL;
966 }
967
968 kaweth_info("Statistics collection: %x", kaweth->configuration.statistics_mask);
969 kaweth_info("Multicast filter limit: %x", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
970 kaweth_info("MTU: %d", le16_to_cpu(kaweth->configuration.segment_size));
971 kaweth_info("Read MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
972 (int)kaweth->configuration.hw_addr[0],
973 (int)kaweth->configuration.hw_addr[1],
974 (int)kaweth->configuration.hw_addr[2],
975 (int)kaweth->configuration.hw_addr[3],
976 (int)kaweth->configuration.hw_addr[4],
977 (int)kaweth->configuration.hw_addr[5]);
978
979 if(!memcmp(&kaweth->configuration.hw_addr,
980 &bcast_addr,
981 sizeof(bcast_addr))) {
982 kaweth_err("Firmware not functioning properly, no net device created");
983 kfree(kaweth);
984 return NULL;
985 }
986
987 if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
988 kaweth_dbg("Error setting URB size");
989 return kaweth;
990 }
991
992 if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
993 kaweth_err("Error setting SOFS wait");
994 return kaweth;
995 }
996
997 result = kaweth_set_receive_filter(kaweth,
998 KAWETH_PACKET_FILTER_DIRECTED |
999 KAWETH_PACKET_FILTER_BROADCAST |
1000 KAWETH_PACKET_FILTER_MULTICAST);
1001
1002 if(result < 0) {
1003 kaweth_err("Error setting receive filter");
1004 return kaweth;
1005 }
1006
1007 kaweth_dbg("Initializing net device.");
1008
1009 kaweth->tx_urb = usb_alloc_urb(0);
1010 if (!kaweth->tx_urb)
1011 goto err_no_urb;
1012 kaweth->rx_urb = usb_alloc_urb(0);
1013 if (!kaweth->rx_urb)
1014 goto err_only_tx;
1015 kaweth->irq_urb = usb_alloc_urb(0);
1016 if (!kaweth->irq_urb)
1017 goto err_tx_and_rx;
1018
1019 kaweth->net = init_etherdev(0, 0);
1020 if (!kaweth->net) {
1021 kaweth_err("Error calling init_etherdev.");
1022 return kaweth;
1023 }
1024
1025 memcpy(kaweth->net->broadcast, &bcast_addr, sizeof(bcast_addr));
1026 memcpy(kaweth->net->dev_addr,
1027 &kaweth->configuration.hw_addr,
1028 sizeof(kaweth->configuration.hw_addr));
1029
1030 kaweth->net->priv = kaweth;
1031 kaweth->net->open = kaweth_open;
1032 kaweth->net->stop = kaweth_close;
1033
1034 kaweth->net->watchdog_timeo = KAWETH_TX_TIMEOUT;
1035 kaweth->net->tx_timeout = kaweth_tx_timeout;
1036
1037 kaweth->net->do_ioctl = kaweth_ioctl;
1038 kaweth->net->hard_start_xmit = kaweth_start_xmit;
1039 kaweth->net->set_multicast_list = kaweth_set_rx_mode;
1040 kaweth->net->get_stats = kaweth_netdev_stats;
1041 kaweth->net->mtu = le16_to_cpu(kaweth->configuration.segment_size < KAWETH_MTU ?
1042 kaweth->configuration.segment_size : KAWETH_MTU);
1043
1044 memset(&kaweth->stats, 0, sizeof(kaweth->stats));
1045
1046 kaweth_info("kaweth interface created at %s", kaweth->net->name);
1047
1048 kaweth_dbg("Kaweth probe returning.");
1049
1050 return kaweth;
1051
1052err_tx_and_rx:
1053 usb_free_urb(kaweth->rx_urb);
1054err_only_tx:
1055 usb_free_urb(kaweth->tx_urb);
1056err_no_urb:
1057 kfree(kaweth);
1058 return NULL;
1059}
1060
1061
1062
1063
1064static void kaweth_disconnect(struct usb_device *dev, void *ptr)
1065{
1066 struct kaweth_device *kaweth = ptr;
1067
1068 kaweth_info("Unregistering");
1069
1070 if (!kaweth) {
1071 kaweth_warn("unregistering non-existant device");
1072 return;
1073 }
1074
1075 kaweth->removed = 1;
1076 usb_unlink_urb(kaweth->irq_urb);
1077 usb_unlink_urb(kaweth->rx_urb);
1078
1079
1080 spin_lock_irq(&kaweth->device_lock);
1081 if (usb_unlink_urb(kaweth->tx_urb) == -EINPROGRESS) {
1082 spin_unlock_irq(&kaweth->device_lock);
1083 wait_event(kaweth->term_wait, kaweth->end);
1084 } else {
1085 spin_unlock_irq(&kaweth->device_lock);
1086 }
1087
1088 if(kaweth->net) {
1089 if(kaweth->net->flags & IFF_UP) {
1090 kaweth_dbg("Closing net device");
1091 dev_close(kaweth->net);
1092 }
1093
1094 kaweth_dbg("Unregistering net device");
1095 unregister_netdev(kaweth->net);
1096 }
1097
1098 usb_free_urb(kaweth->rx_urb);
1099 usb_free_urb(kaweth->tx_urb);
1100
1101 kfree(kaweth);
1102}
1103
1104
1105
1106
1107struct kw_api_data {
1108 wait_queue_head_t wqh;
1109 int done;
1110};
1111
1112
1113
1114
1115static void usb_api_blocking_completion(struct urb *urb)
1116{
1117 struct kw_api_data *awd = (struct kw_api_data *)urb->context;
1118
1119 awd->done=1;
1120 wake_up(&awd->wqh);
1121}
1122
1123
1124
1125
1126
1127
1128static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length)
1129{
1130 DECLARE_WAITQUEUE(wait, current);
1131 struct kw_api_data awd;
1132 int status;
1133
1134 init_waitqueue_head(&awd.wqh);
1135 awd.done = 0;
1136
1137 set_current_state(TASK_INTERRUPTIBLE);
1138 add_wait_queue(&awd.wqh, &wait);
1139 urb->context = &awd;
1140 status = usb_submit_urb(urb);
1141 if (status) {
1142
1143 usb_free_urb(urb);
1144 set_current_state(TASK_RUNNING);
1145 remove_wait_queue(&awd.wqh, &wait);
1146 return status;
1147 }
1148
1149 while (timeout && !awd.done)
1150 timeout = schedule_timeout(timeout);
1151
1152 set_current_state(TASK_RUNNING);
1153 remove_wait_queue(&awd.wqh, &wait);
1154
1155 if (!timeout) {
1156
1157 kaweth_warn("usb_control/bulk_msg: timeout");
1158 usb_unlink_urb(urb);
1159 status = -ETIMEDOUT;
1160 }
1161 else {
1162 status = urb->status;
1163 }
1164
1165 if (actual_length) {
1166 *actual_length = urb->actual_length;
1167 }
1168
1169 usb_free_urb(urb);
1170 return status;
1171}
1172
1173
1174
1175int kaweth_internal_control_msg(struct usb_device *usb_dev, unsigned int pipe,
1176 struct usb_ctrlrequest *cmd, void *data, int len,
1177 int timeout)
1178{
1179 struct urb *urb;
1180 int retv;
1181 int length;
1182
1183 urb = usb_alloc_urb(0);
1184 if (!urb)
1185 return -ENOMEM;
1186
1187 FILL_CONTROL_URB(urb, usb_dev, pipe, (unsigned char*)cmd, data,
1188 len, (usb_complete_t)usb_api_blocking_completion,0);
1189
1190 retv = usb_start_wait_urb(urb, timeout, &length);
1191 if (retv < 0) {
1192 return retv;
1193 }
1194 else {
1195 return length;
1196 }
1197}
1198
1199
1200
1201
1202
1203int __init kaweth_init(void)
1204{
1205 kaweth_dbg("Driver loading");
1206 return usb_register(&kaweth_driver);
1207}
1208
1209
1210
1211
1212void __exit kaweth_exit(void)
1213{
1214 usb_deregister(&kaweth_driver);
1215}
1216
1217module_init(kaweth_init);
1218module_exit(kaweth_exit);
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
