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#include <linux/module.h>
34#include <linux/slab.h>
35#include <linux/string.h>
36#include <linux/delay.h>
37#include <linux/netdevice.h>
38#include <linux/etherdevice.h>
39#include <linux/usb.h>
40#include <linux/types.h>
41#include <linux/ethtool.h>
42#include <linux/dma-mapping.h>
43#include <linux/wait.h>
44#include <linux/firmware.h>
45#include <linux/uaccess.h>
46#include <asm/byteorder.h>
47
48#undef DEBUG
49
50#define KAWETH_MTU 1514
51#define KAWETH_BUF_SIZE 1664
52#define KAWETH_TX_TIMEOUT (5 * HZ)
53#define KAWETH_SCRATCH_SIZE 32
54#define KAWETH_FIRMWARE_BUF_SIZE 4096
55#define KAWETH_CONTROL_TIMEOUT (30000)
56
57#define KAWETH_STATUS_BROKEN 0x0000001
58#define KAWETH_STATUS_CLOSING 0x0000002
59#define KAWETH_STATUS_SUSPENDING 0x0000004
60
61#define KAWETH_STATUS_BLOCKED (KAWETH_STATUS_CLOSING | KAWETH_STATUS_SUSPENDING)
62
63#define KAWETH_PACKET_FILTER_PROMISCUOUS 0x01
64#define KAWETH_PACKET_FILTER_ALL_MULTICAST 0x02
65#define KAWETH_PACKET_FILTER_DIRECTED 0x04
66#define KAWETH_PACKET_FILTER_BROADCAST 0x08
67#define KAWETH_PACKET_FILTER_MULTICAST 0x10
68
69
70#define KAWETH_COMMAND_GET_ETHERNET_DESC 0x00
71#define KAWETH_COMMAND_MULTICAST_FILTERS 0x01
72#define KAWETH_COMMAND_SET_PACKET_FILTER 0x02
73#define KAWETH_COMMAND_STATISTICS 0x03
74#define KAWETH_COMMAND_SET_TEMP_MAC 0x06
75#define KAWETH_COMMAND_GET_TEMP_MAC 0x07
76#define KAWETH_COMMAND_SET_URB_SIZE 0x08
77#define KAWETH_COMMAND_SET_SOFS_WAIT 0x09
78#define KAWETH_COMMAND_SCAN 0xFF
79
80#define KAWETH_SOFS_TO_WAIT 0x05
81
82#define INTBUFFERSIZE 4
83
84#define STATE_OFFSET 0
85#define STATE_MASK 0x40
86#define STATE_SHIFT 5
87
88#define IS_BLOCKED(s) (s & KAWETH_STATUS_BLOCKED)
89
90
91MODULE_AUTHOR("Michael Zappe <zapman@interlan.net>, Stephane Alnet <stephane@u-picardie.fr>, Brad Hards <bhards@bigpond.net.au> and Oliver Neukum <oliver@neukum.org>");
92MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver");
93MODULE_LICENSE("GPL");
94MODULE_FIRMWARE("kaweth/new_code.bin");
95MODULE_FIRMWARE("kaweth/new_code_fix.bin");
96MODULE_FIRMWARE("kaweth/trigger_code.bin");
97MODULE_FIRMWARE("kaweth/trigger_code_fix.bin");
98
99static const char driver_name[] = "kaweth";
100
101static int kaweth_probe(
102 struct usb_interface *intf,
103 const struct usb_device_id *id
104 );
105static void kaweth_disconnect(struct usb_interface *intf);
106static int kaweth_suspend(struct usb_interface *intf, pm_message_t message);
107static int kaweth_resume(struct usb_interface *intf);
108
109
110
111
112static const struct usb_device_id usb_klsi_table[] = {
113 { USB_DEVICE(0x03e8, 0x0008) },
114 { USB_DEVICE(0x04bb, 0x0901) },
115 { USB_DEVICE(0x0506, 0x03e8) },
116 { USB_DEVICE(0x0506, 0x11f8) },
117 { USB_DEVICE(0x0557, 0x2002) },
118 { USB_DEVICE(0x0557, 0x4000) },
119 { USB_DEVICE(0x0565, 0x0002) },
120 { USB_DEVICE(0x0565, 0x0003) },
121 { USB_DEVICE(0x0565, 0x0005) },
122 { USB_DEVICE(0x05e9, 0x0008) },
123 { USB_DEVICE(0x05e9, 0x0009) },
124 { USB_DEVICE(0x066b, 0x2202) },
125 { USB_DEVICE(0x06e1, 0x0008) },
126 { USB_DEVICE(0x06e1, 0x0009) },
127 { USB_DEVICE(0x0707, 0x0100) },
128 { USB_DEVICE(0x07aa, 0x0001) },
129 { USB_DEVICE(0x07b8, 0x4000) },
130 { USB_DEVICE(0x07c9, 0xb010) },
131 { USB_DEVICE(0x0846, 0x1001) },
132 { USB_DEVICE(0x0846, 0x1002) },
133 { USB_DEVICE(0x085a, 0x0008) },
134 { USB_DEVICE(0x085a, 0x0009) },
135 { USB_DEVICE(0x087d, 0x5704) },
136 { USB_DEVICE(0x0951, 0x0008) },
137 { USB_DEVICE(0x095a, 0x3003) },
138 { USB_DEVICE(0x10bd, 0x1427) },
139 { USB_DEVICE(0x1342, 0x0204) },
140 { USB_DEVICE(0x13d2, 0x0400) },
141 { USB_DEVICE(0x1485, 0x0001) },
142 { USB_DEVICE(0x1485, 0x0002) },
143 { USB_DEVICE(0x1645, 0x0005) },
144 { USB_DEVICE(0x1645, 0x0008) },
145 { USB_DEVICE(0x1645, 0x8005) },
146 { USB_DEVICE(0x1668, 0x0323) },
147 { USB_DEVICE(0x2001, 0x4000) },
148 {}
149};
150
151MODULE_DEVICE_TABLE (usb, usb_klsi_table);
152
153
154
155
156static struct usb_driver kaweth_driver = {
157 .name = driver_name,
158 .probe = kaweth_probe,
159 .disconnect = kaweth_disconnect,
160 .suspend = kaweth_suspend,
161 .resume = kaweth_resume,
162 .id_table = usb_klsi_table,
163 .supports_autosuspend = 1,
164 .disable_hub_initiated_lpm = 1,
165};
166
167typedef __u8 eth_addr_t[6];
168
169
170
171
172struct usb_eth_dev {
173 char *name;
174 __u16 vendor;
175 __u16 device;
176 void *pdata;
177};
178
179
180
181
182
183struct kaweth_ethernet_configuration
184{
185 __u8 size;
186 __u8 reserved1;
187 __u8 reserved2;
188 eth_addr_t hw_addr;
189 __u32 statistics_mask;
190 __le16 segment_size;
191 __u16 max_multicast_filters;
192 __u8 reserved3;
193} __packed;
194
195
196
197
198struct kaweth_device
199{
200 spinlock_t device_lock;
201
202 __u32 status;
203 int end;
204 int suspend_lowmem_rx;
205 int suspend_lowmem_ctrl;
206 int linkstate;
207 int opened;
208 struct delayed_work lowmem_work;
209
210 struct usb_device *dev;
211 struct usb_interface *intf;
212 struct net_device *net;
213 wait_queue_head_t term_wait;
214
215 struct urb *rx_urb;
216 struct urb *tx_urb;
217 struct urb *irq_urb;
218
219 dma_addr_t intbufferhandle;
220 __u8 *intbuffer;
221 dma_addr_t rxbufferhandle;
222 __u8 *rx_buf;
223
224
225 struct sk_buff *tx_skb;
226
227 __u8 *firmware_buf;
228 __u8 scratch[KAWETH_SCRATCH_SIZE];
229 __u16 packet_filter_bitmap;
230
231 struct kaweth_ethernet_configuration configuration;
232};
233
234
235
236
237static int kaweth_read_configuration(struct kaweth_device *kaweth)
238{
239 return usb_control_msg(kaweth->dev, usb_rcvctrlpipe(kaweth->dev, 0),
240 KAWETH_COMMAND_GET_ETHERNET_DESC,
241 USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE,
242 0, 0,
243 &kaweth->configuration,
244 sizeof(kaweth->configuration),
245 KAWETH_CONTROL_TIMEOUT);
246}
247
248
249
250
251static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size)
252{
253 netdev_dbg(kaweth->net, "Setting URB size to %d\n", (unsigned)urb_size);
254
255 return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0),
256 KAWETH_COMMAND_SET_URB_SIZE,
257 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
258 urb_size, 0,
259 &kaweth->scratch, 0,
260 KAWETH_CONTROL_TIMEOUT);
261}
262
263
264
265
266static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait)
267{
268 netdev_dbg(kaweth->net, "Set SOFS wait to %d\n", (unsigned)sofs_wait);
269
270 return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0),
271 KAWETH_COMMAND_SET_SOFS_WAIT,
272 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
273 sofs_wait, 0,
274 &kaweth->scratch, 0,
275 KAWETH_CONTROL_TIMEOUT);
276}
277
278
279
280
281static int kaweth_set_receive_filter(struct kaweth_device *kaweth,
282 __u16 receive_filter)
283{
284 netdev_dbg(kaweth->net, "Set receive filter to %d\n",
285 (unsigned)receive_filter);
286
287 return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0),
288 KAWETH_COMMAND_SET_PACKET_FILTER,
289 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
290 receive_filter, 0,
291 &kaweth->scratch, 0,
292 KAWETH_CONTROL_TIMEOUT);
293}
294
295
296
297
298static int kaweth_download_firmware(struct kaweth_device *kaweth,
299 const char *fwname,
300 __u8 interrupt,
301 __u8 type)
302{
303 const struct firmware *fw;
304 int data_len;
305 int ret;
306
307 ret = request_firmware(&fw, fwname, &kaweth->dev->dev);
308 if (ret) {
309 dev_err(&kaweth->intf->dev, "Firmware request failed\n");
310 return ret;
311 }
312
313 if (fw->size > KAWETH_FIRMWARE_BUF_SIZE) {
314 dev_err(&kaweth->intf->dev, "Firmware too big: %zu\n",
315 fw->size);
316 release_firmware(fw);
317 return -ENOSPC;
318 }
319 data_len = fw->size;
320 memcpy(kaweth->firmware_buf, fw->data, fw->size);
321
322 release_firmware(fw);
323
324 kaweth->firmware_buf[2] = (data_len & 0xFF) - 7;
325 kaweth->firmware_buf[3] = data_len >> 8;
326 kaweth->firmware_buf[4] = type;
327 kaweth->firmware_buf[5] = interrupt;
328
329 netdev_dbg(kaweth->net, "High: %i, Low:%i\n", kaweth->firmware_buf[3],
330 kaweth->firmware_buf[2]);
331
332 netdev_dbg(kaweth->net,
333 "Downloading firmware at %p to kaweth device at %p\n",
334 kaweth->firmware_buf, kaweth);
335 netdev_dbg(kaweth->net, "Firmware length: %d\n", data_len);
336
337 return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0),
338 KAWETH_COMMAND_SCAN,
339 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
340 0, 0,
341 kaweth->firmware_buf, data_len,
342 KAWETH_CONTROL_TIMEOUT);
343}
344
345
346
347
348static int kaweth_trigger_firmware(struct kaweth_device *kaweth,
349 __u8 interrupt)
350{
351 kaweth->firmware_buf[0] = 0xB6;
352 kaweth->firmware_buf[1] = 0xC3;
353 kaweth->firmware_buf[2] = 0x01;
354 kaweth->firmware_buf[3] = 0x00;
355 kaweth->firmware_buf[4] = 0x06;
356 kaweth->firmware_buf[5] = interrupt;
357 kaweth->firmware_buf[6] = 0x00;
358 kaweth->firmware_buf[7] = 0x00;
359
360 return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0),
361 KAWETH_COMMAND_SCAN,
362 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
363 0, 0,
364 (void *)kaweth->firmware_buf, 8,
365 KAWETH_CONTROL_TIMEOUT);
366}
367
368
369
370
371static int kaweth_reset(struct kaweth_device *kaweth)
372{
373 int result;
374
375 result = usb_reset_configuration(kaweth->dev);
376 mdelay(10);
377
378 netdev_dbg(kaweth->net, "kaweth_reset() returns %d.\n", result);
379
380 return result;
381}
382
383static void kaweth_usb_receive(struct urb *);
384static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t);
385
386
387
388
389
390static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t mf)
391{
392 int status;
393
394 status = usb_submit_urb (kaweth->irq_urb, mf);
395 if (unlikely(status == -ENOMEM)) {
396 kaweth->suspend_lowmem_ctrl = 1;
397 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
398 } else {
399 kaweth->suspend_lowmem_ctrl = 0;
400 }
401
402 if (status)
403 dev_err(&kaweth->intf->dev,
404 "can't resubmit intr, %s-%s, status %d\n",
405 kaweth->dev->bus->bus_name,
406 kaweth->dev->devpath, status);
407}
408
409static void int_callback(struct urb *u)
410{
411 struct kaweth_device *kaweth = u->context;
412 int act_state;
413 int status = u->status;
414
415 switch (status) {
416 case 0:
417 break;
418 case -ECONNRESET:
419 case -ENOENT:
420 case -ESHUTDOWN:
421 return;
422
423 default:
424 goto resubmit;
425 }
426
427
428 if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) {
429 if (act_state)
430 netif_carrier_on(kaweth->net);
431 else
432 netif_carrier_off(kaweth->net);
433
434 kaweth->linkstate = act_state;
435 }
436resubmit:
437 kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC);
438}
439
440static void kaweth_resubmit_tl(struct work_struct *work)
441{
442 struct kaweth_device *kaweth =
443 container_of(work, struct kaweth_device, lowmem_work.work);
444
445 if (IS_BLOCKED(kaweth->status))
446 return;
447
448 if (kaweth->suspend_lowmem_rx)
449 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
450
451 if (kaweth->suspend_lowmem_ctrl)
452 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
453}
454
455
456
457
458
459static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth,
460 gfp_t mem_flags)
461{
462 int result;
463
464 usb_fill_bulk_urb(kaweth->rx_urb,
465 kaweth->dev,
466 usb_rcvbulkpipe(kaweth->dev, 1),
467 kaweth->rx_buf,
468 KAWETH_BUF_SIZE,
469 kaweth_usb_receive,
470 kaweth);
471 kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
472 kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle;
473
474 if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) {
475 if (result == -ENOMEM) {
476 kaweth->suspend_lowmem_rx = 1;
477 schedule_delayed_work(&kaweth->lowmem_work, HZ/4);
478 }
479 dev_err(&kaweth->intf->dev, "resubmitting rx_urb %d failed\n",
480 result);
481 } else {
482 kaweth->suspend_lowmem_rx = 0;
483 }
484
485 return result;
486}
487
488static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth,
489 bool may_sleep);
490
491
492
493
494static void kaweth_usb_receive(struct urb *urb)
495{
496 struct device *dev = &urb->dev->dev;
497 struct kaweth_device *kaweth = urb->context;
498 struct net_device *net = kaweth->net;
499 int status = urb->status;
500 unsigned long flags;
501 int count = urb->actual_length;
502 int count2 = urb->transfer_buffer_length;
503
504 __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf);
505
506 struct sk_buff *skb;
507
508 if (unlikely(status == -EPIPE)) {
509 net->stats.rx_errors++;
510 kaweth->end = 1;
511 wake_up(&kaweth->term_wait);
512 dev_dbg(dev, "Status was -EPIPE.\n");
513 return;
514 }
515 if (unlikely(status == -ECONNRESET || status == -ESHUTDOWN)) {
516
517 kaweth->end = 1;
518 wake_up(&kaweth->term_wait);
519 dev_dbg(dev, "Status was -ECONNRESET or -ESHUTDOWN.\n");
520 return;
521 }
522 if (unlikely(status == -EPROTO || status == -ETIME ||
523 status == -EILSEQ)) {
524 net->stats.rx_errors++;
525 dev_dbg(dev, "Status was -EPROTO, -ETIME, or -EILSEQ.\n");
526 return;
527 }
528 if (unlikely(status == -EOVERFLOW)) {
529 net->stats.rx_errors++;
530 dev_dbg(dev, "Status was -EOVERFLOW.\n");
531 }
532 spin_lock_irqsave(&kaweth->device_lock, flags);
533 if (IS_BLOCKED(kaweth->status)) {
534 spin_unlock_irqrestore(&kaweth->device_lock, flags);
535 return;
536 }
537 spin_unlock_irqrestore(&kaweth->device_lock, flags);
538
539 if(status && status != -EREMOTEIO && count != 1) {
540 dev_err(&kaweth->intf->dev,
541 "%s RX status: %d count: %d packet_len: %d\n",
542 net->name, status, count, (int)pkt_len);
543 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
544 return;
545 }
546
547 if(kaweth->net && (count > 2)) {
548 if(pkt_len > (count - 2)) {
549 dev_err(&kaweth->intf->dev,
550 "Packet length too long for USB frame (pkt_len: %x, count: %x)\n",
551 pkt_len, count);
552 dev_err(&kaweth->intf->dev, "Packet len & 2047: %x\n",
553 pkt_len & 2047);
554 dev_err(&kaweth->intf->dev, "Count 2: %x\n", count2);
555 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
556 return;
557 }
558
559 if(!(skb = dev_alloc_skb(pkt_len+2))) {
560 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
561 return;
562 }
563
564 skb_reserve(skb, 2);
565
566 skb_copy_to_linear_data(skb, kaweth->rx_buf + 2, pkt_len);
567
568 skb_put(skb, pkt_len);
569
570 skb->protocol = eth_type_trans(skb, net);
571
572 netif_rx(skb);
573
574 net->stats.rx_packets++;
575 net->stats.rx_bytes += pkt_len;
576 }
577
578 kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC);
579}
580
581
582
583
584static int kaweth_open(struct net_device *net)
585{
586 struct kaweth_device *kaweth = netdev_priv(net);
587 int res;
588
589 res = usb_autopm_get_interface(kaweth->intf);
590 if (res) {
591 dev_err(&kaweth->intf->dev, "Interface cannot be resumed.\n");
592 return -EIO;
593 }
594 res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL);
595 if (res)
596 goto err_out;
597
598 usb_fill_int_urb(
599 kaweth->irq_urb,
600 kaweth->dev,
601 usb_rcvintpipe(kaweth->dev, 3),
602 kaweth->intbuffer,
603 INTBUFFERSIZE,
604 int_callback,
605 kaweth,
606 250);
607 kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle;
608 kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
609
610 res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL);
611 if (res) {
612 usb_kill_urb(kaweth->rx_urb);
613 goto err_out;
614 }
615 kaweth->opened = 1;
616
617 netif_start_queue(net);
618
619 kaweth_async_set_rx_mode(kaweth, true);
620 return 0;
621
622err_out:
623 usb_autopm_put_interface(kaweth->intf);
624 return -EIO;
625}
626
627
628
629
630static void kaweth_kill_urbs(struct kaweth_device *kaweth)
631{
632 usb_kill_urb(kaweth->irq_urb);
633 usb_kill_urb(kaweth->rx_urb);
634 usb_kill_urb(kaweth->tx_urb);
635
636 cancel_delayed_work_sync(&kaweth->lowmem_work);
637
638
639
640 usb_kill_urb(kaweth->irq_urb);
641 usb_kill_urb(kaweth->rx_urb);
642}
643
644
645
646
647static int kaweth_close(struct net_device *net)
648{
649 struct kaweth_device *kaweth = netdev_priv(net);
650
651 netif_stop_queue(net);
652 kaweth->opened = 0;
653
654 kaweth->status |= KAWETH_STATUS_CLOSING;
655
656 kaweth_kill_urbs(kaweth);
657
658 kaweth->status &= ~KAWETH_STATUS_CLOSING;
659
660 usb_autopm_put_interface(kaweth->intf);
661
662 return 0;
663}
664
665static u32 kaweth_get_link(struct net_device *dev)
666{
667 struct kaweth_device *kaweth = netdev_priv(dev);
668
669 return kaweth->linkstate;
670}
671
672static const struct ethtool_ops ops = {
673 .get_link = kaweth_get_link
674};
675
676
677
678
679static void kaweth_usb_transmit_complete(struct urb *urb)
680{
681 struct kaweth_device *kaweth = urb->context;
682 struct sk_buff *skb = kaweth->tx_skb;
683 int status = urb->status;
684
685 if (unlikely(status != 0))
686 if (status != -ENOENT)
687 dev_dbg(&urb->dev->dev, "%s: TX status %d.\n",
688 kaweth->net->name, status);
689
690 netif_wake_queue(kaweth->net);
691 dev_kfree_skb_irq(skb);
692}
693
694
695
696
697static netdev_tx_t kaweth_start_xmit(struct sk_buff *skb,
698 struct net_device *net)
699{
700 struct kaweth_device *kaweth = netdev_priv(net);
701 __le16 *private_header;
702
703 int res;
704
705 spin_lock_irq(&kaweth->device_lock);
706
707 kaweth_async_set_rx_mode(kaweth, false);
708 netif_stop_queue(net);
709 if (IS_BLOCKED(kaweth->status)) {
710 goto skip;
711 }
712
713
714 if (skb_cow_head(skb, 2)) {
715 net->stats.tx_errors++;
716 netif_start_queue(net);
717 spin_unlock_irq(&kaweth->device_lock);
718 dev_kfree_skb_any(skb);
719 return NETDEV_TX_OK;
720 }
721
722 private_header = __skb_push(skb, 2);
723 *private_header = cpu_to_le16(skb->len-2);
724 kaweth->tx_skb = skb;
725
726 usb_fill_bulk_urb(kaweth->tx_urb,
727 kaweth->dev,
728 usb_sndbulkpipe(kaweth->dev, 2),
729 private_header,
730 skb->len,
731 kaweth_usb_transmit_complete,
732 kaweth);
733 kaweth->end = 0;
734
735 if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC)))
736 {
737 dev_warn(&net->dev, "kaweth failed tx_urb %d\n", res);
738skip:
739 net->stats.tx_errors++;
740
741 netif_start_queue(net);
742 dev_kfree_skb_irq(skb);
743 }
744 else
745 {
746 net->stats.tx_packets++;
747 net->stats.tx_bytes += skb->len;
748 }
749
750 spin_unlock_irq(&kaweth->device_lock);
751
752 return NETDEV_TX_OK;
753}
754
755
756
757
758static void kaweth_set_rx_mode(struct net_device *net)
759{
760 struct kaweth_device *kaweth = netdev_priv(net);
761
762 __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED |
763 KAWETH_PACKET_FILTER_BROADCAST |
764 KAWETH_PACKET_FILTER_MULTICAST;
765
766 netdev_dbg(net, "Setting Rx mode to %d\n", packet_filter_bitmap);
767
768 netif_stop_queue(net);
769
770 if (net->flags & IFF_PROMISC) {
771 packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS;
772 }
773 else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
774 packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST;
775 }
776
777 kaweth->packet_filter_bitmap = packet_filter_bitmap;
778 netif_wake_queue(net);
779}
780
781
782
783
784static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth,
785 bool may_sleep)
786{
787 int ret;
788 __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap;
789
790 kaweth->packet_filter_bitmap = 0;
791 if (packet_filter_bitmap == 0)
792 return;
793
794 if (!may_sleep)
795 return;
796
797 ret = usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0),
798 KAWETH_COMMAND_SET_PACKET_FILTER,
799 USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
800 packet_filter_bitmap, 0,
801 &kaweth->scratch, 0,
802 KAWETH_CONTROL_TIMEOUT);
803 if (ret < 0)
804 dev_err(&kaweth->intf->dev, "Failed to set Rx mode: %d\n",
805 ret);
806 else
807 netdev_dbg(kaweth->net, "Set Rx mode to %d\n",
808 packet_filter_bitmap);
809}
810
811
812
813
814static void kaweth_tx_timeout(struct net_device *net, unsigned int txqueue)
815{
816 struct kaweth_device *kaweth = netdev_priv(net);
817
818 dev_warn(&net->dev, "%s: Tx timed out. Resetting.\n", net->name);
819 net->stats.tx_errors++;
820 netif_trans_update(net);
821
822 usb_unlink_urb(kaweth->tx_urb);
823}
824
825
826
827
828static int kaweth_suspend(struct usb_interface *intf, pm_message_t message)
829{
830 struct kaweth_device *kaweth = usb_get_intfdata(intf);
831 unsigned long flags;
832
833 spin_lock_irqsave(&kaweth->device_lock, flags);
834 kaweth->status |= KAWETH_STATUS_SUSPENDING;
835 spin_unlock_irqrestore(&kaweth->device_lock, flags);
836
837 kaweth_kill_urbs(kaweth);
838 return 0;
839}
840
841
842
843
844static int kaweth_resume(struct usb_interface *intf)
845{
846 struct kaweth_device *kaweth = usb_get_intfdata(intf);
847 unsigned long flags;
848
849 spin_lock_irqsave(&kaweth->device_lock, flags);
850 kaweth->status &= ~KAWETH_STATUS_SUSPENDING;
851 spin_unlock_irqrestore(&kaweth->device_lock, flags);
852
853 if (!kaweth->opened)
854 return 0;
855 kaweth_resubmit_rx_urb(kaweth, GFP_NOIO);
856 kaweth_resubmit_int_urb(kaweth, GFP_NOIO);
857
858 return 0;
859}
860
861
862
863
864
865
866static const struct net_device_ops kaweth_netdev_ops = {
867 .ndo_open = kaweth_open,
868 .ndo_stop = kaweth_close,
869 .ndo_start_xmit = kaweth_start_xmit,
870 .ndo_tx_timeout = kaweth_tx_timeout,
871 .ndo_set_rx_mode = kaweth_set_rx_mode,
872 .ndo_set_mac_address = eth_mac_addr,
873 .ndo_validate_addr = eth_validate_addr,
874};
875
876static int kaweth_probe(
877 struct usb_interface *intf,
878 const struct usb_device_id *id
879 )
880{
881 struct device *dev = &intf->dev;
882 struct usb_device *udev = interface_to_usbdev(intf);
883 struct kaweth_device *kaweth;
884 struct net_device *netdev;
885 const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
886 int result = 0;
887 int rv = -EIO;
888
889 dev_dbg(dev,
890 "Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x\n",
891 udev->devnum, le16_to_cpu(udev->descriptor.idVendor),
892 le16_to_cpu(udev->descriptor.idProduct),
893 le16_to_cpu(udev->descriptor.bcdDevice));
894
895 dev_dbg(dev, "Device at %p\n", udev);
896
897 dev_dbg(dev, "Descriptor length: %x type: %x\n",
898 (int)udev->descriptor.bLength,
899 (int)udev->descriptor.bDescriptorType);
900
901 netdev = alloc_etherdev(sizeof(*kaweth));
902 if (!netdev)
903 return -ENOMEM;
904
905 kaweth = netdev_priv(netdev);
906 kaweth->dev = udev;
907 kaweth->net = netdev;
908 kaweth->intf = intf;
909
910 spin_lock_init(&kaweth->device_lock);
911 init_waitqueue_head(&kaweth->term_wait);
912
913 dev_dbg(dev, "Resetting.\n");
914
915 kaweth_reset(kaweth);
916
917
918
919
920
921
922 if (le16_to_cpu(udev->descriptor.bcdDevice) >> 8) {
923 dev_info(dev, "Firmware present in device.\n");
924 } else {
925
926 dev_info(dev, "Downloading firmware...\n");
927 kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL);
928 if (!kaweth->firmware_buf) {
929 rv = -ENOMEM;
930 goto err_free_netdev;
931 }
932 if ((result = kaweth_download_firmware(kaweth,
933 "kaweth/new_code.bin",
934 100,
935 2)) < 0) {
936 dev_err(dev, "Error downloading firmware (%d)\n",
937 result);
938 goto err_fw;
939 }
940
941 if ((result = kaweth_download_firmware(kaweth,
942 "kaweth/new_code_fix.bin",
943 100,
944 3)) < 0) {
945 dev_err(dev, "Error downloading firmware fix (%d)\n",
946 result);
947 goto err_fw;
948 }
949
950 if ((result = kaweth_download_firmware(kaweth,
951 "kaweth/trigger_code.bin",
952 126,
953 2)) < 0) {
954 dev_err(dev, "Error downloading trigger code (%d)\n",
955 result);
956 goto err_fw;
957
958 }
959
960 if ((result = kaweth_download_firmware(kaweth,
961 "kaweth/trigger_code_fix.bin",
962 126,
963 3)) < 0) {
964 dev_err(dev, "Error downloading trigger code fix (%d)\n", result);
965 goto err_fw;
966 }
967
968
969 if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) {
970 dev_err(dev, "Error triggering firmware (%d)\n", result);
971 goto err_fw;
972 }
973
974
975 dev_info(dev, "Firmware loaded. I'll be back...\n");
976err_fw:
977 free_page((unsigned long)kaweth->firmware_buf);
978 free_netdev(netdev);
979 return -EIO;
980 }
981
982 result = kaweth_read_configuration(kaweth);
983
984 if(result < 0) {
985 dev_err(dev, "Error reading configuration (%d), no net device created\n", result);
986 goto err_free_netdev;
987 }
988
989 dev_info(dev, "Statistics collection: %x\n", kaweth->configuration.statistics_mask);
990 dev_info(dev, "Multicast filter limit: %x\n", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1));
991 dev_info(dev, "MTU: %d\n", le16_to_cpu(kaweth->configuration.segment_size));
992 dev_info(dev, "Read MAC address %pM\n", kaweth->configuration.hw_addr);
993
994 if(!memcmp(&kaweth->configuration.hw_addr,
995 &bcast_addr,
996 sizeof(bcast_addr))) {
997 dev_err(dev, "Firmware not functioning properly, no net device created\n");
998 goto err_free_netdev;
999 }
1000
1001 if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) {
1002 dev_dbg(dev, "Error setting URB size\n");
1003 goto err_free_netdev;
1004 }
1005
1006 if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) {
1007 dev_err(dev, "Error setting SOFS wait\n");
1008 goto err_free_netdev;
1009 }
1010
1011 result = kaweth_set_receive_filter(kaweth,
1012 KAWETH_PACKET_FILTER_DIRECTED |
1013 KAWETH_PACKET_FILTER_BROADCAST |
1014 KAWETH_PACKET_FILTER_MULTICAST);
1015
1016 if(result < 0) {
1017 dev_err(dev, "Error setting receive filter\n");
1018 goto err_free_netdev;
1019 }
1020
1021 dev_dbg(dev, "Initializing net device.\n");
1022
1023 kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1024 if (!kaweth->tx_urb)
1025 goto err_free_netdev;
1026 kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1027 if (!kaweth->rx_urb)
1028 goto err_only_tx;
1029 kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
1030 if (!kaweth->irq_urb)
1031 goto err_tx_and_rx;
1032
1033 kaweth->intbuffer = usb_alloc_coherent( kaweth->dev,
1034 INTBUFFERSIZE,
1035 GFP_KERNEL,
1036 &kaweth->intbufferhandle);
1037 if (!kaweth->intbuffer)
1038 goto err_tx_and_rx_and_irq;
1039 kaweth->rx_buf = usb_alloc_coherent( kaweth->dev,
1040 KAWETH_BUF_SIZE,
1041 GFP_KERNEL,
1042 &kaweth->rxbufferhandle);
1043 if (!kaweth->rx_buf)
1044 goto err_all_but_rxbuf;
1045
1046 memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr));
1047 memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr,
1048 sizeof(kaweth->configuration.hw_addr));
1049
1050 netdev->netdev_ops = &kaweth_netdev_ops;
1051 netdev->watchdog_timeo = KAWETH_TX_TIMEOUT;
1052 netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size);
1053 netdev->ethtool_ops = &ops;
1054
1055
1056 INIT_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl);
1057 usb_set_intfdata(intf, kaweth);
1058
1059 SET_NETDEV_DEV(netdev, dev);
1060 if (register_netdev(netdev) != 0) {
1061 dev_err(dev, "Error registering netdev.\n");
1062 goto err_intfdata;
1063 }
1064
1065 dev_info(dev, "kaweth interface created at %s\n",
1066 kaweth->net->name);
1067
1068 return 0;
1069
1070err_intfdata:
1071 usb_set_intfdata(intf, NULL);
1072 usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1073err_all_but_rxbuf:
1074 usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1075err_tx_and_rx_and_irq:
1076 usb_free_urb(kaweth->irq_urb);
1077err_tx_and_rx:
1078 usb_free_urb(kaweth->rx_urb);
1079err_only_tx:
1080 usb_free_urb(kaweth->tx_urb);
1081err_free_netdev:
1082 free_netdev(netdev);
1083
1084 return rv;
1085}
1086
1087
1088
1089
1090static void kaweth_disconnect(struct usb_interface *intf)
1091{
1092 struct kaweth_device *kaweth = usb_get_intfdata(intf);
1093 struct net_device *netdev;
1094
1095 usb_set_intfdata(intf, NULL);
1096 if (!kaweth) {
1097 dev_warn(&intf->dev, "unregistering non-existent device\n");
1098 return;
1099 }
1100 netdev = kaweth->net;
1101
1102 netdev_dbg(kaweth->net, "Unregistering net device\n");
1103 unregister_netdev(netdev);
1104
1105 usb_free_urb(kaweth->rx_urb);
1106 usb_free_urb(kaweth->tx_urb);
1107 usb_free_urb(kaweth->irq_urb);
1108
1109 usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle);
1110 usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle);
1111
1112 free_netdev(netdev);
1113}
1114
1115
1116module_usb_driver(kaweth_driver);
1117
