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x86: fix bootup crash in native_read_tsc()
[wrt350n-kernel.git] / drivers / net / usb / catc.c
blob76752d84a30f80f7cfcafc2bce6437c6f582bbe8
1 /*
2 * Copyright (c) 2001 Vojtech Pavlik
3 *
4 * CATC EL1210A NetMate USB Ethernet driver
5 *
6 * Sponsored by SuSE
7 *
8 * Based on the work of
9 * Donald Becker
10 *
11 * Old chipset support added by Simon Evans <spse@secret.org.uk> 2002
12 * - adds support for Belkin F5U011
13 */
14
15 /*
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 *
30 * Should you need to contact me, the author, you can do so either by
31 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
32 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
33 */
34
35 #include <linux/init.h>
36 #include <linux/module.h>
37 #include <linux/kernel.h>
38 #include <linux/string.h>
39 #include <linux/slab.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/skbuff.h>
43 #include <linux/spinlock.h>
44 #include <linux/ethtool.h>
45 #include <linux/crc32.h>
46 #include <linux/bitops.h>
47 #include <asm/uaccess.h>
48
49 #undef DEBUG
50
51 #include <linux/usb.h>
52
53 /*
54 * Version information.
55 */
56
57 #define DRIVER_VERSION "v2.8"
58 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>"
59 #define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver"
60 #define SHORT_DRIVER_DESC "EL1210A NetMate USB Ethernet"
61
62 MODULE_AUTHOR(DRIVER_AUTHOR);
63 MODULE_DESCRIPTION(DRIVER_DESC);
64 MODULE_LICENSE("GPL");
65
66 static const char driver_name[] = "catc";
67
68 /*
69 * Some defines.
70 */
71
72 #define STATS_UPDATE (HZ) /* Time between stats updates */
73 #define TX_TIMEOUT (5*HZ) /* Max time the queue can be stopped */
74 #define PKT_SZ 1536 /* Max Ethernet packet size */
75 #define RX_MAX_BURST 15 /* Max packets per rx buffer (> 0, < 16) */
76 #define TX_MAX_BURST 15 /* Max full sized packets per tx buffer (> 0) */
77 #define CTRL_QUEUE 16 /* Max control requests in flight (power of two) */
78 #define RX_PKT_SZ 1600 /* Max size of receive packet for F5U011 */
79
80 /*
81 * Control requests.
82 */
83
84 enum control_requests {
85 ReadMem = 0xf1,
86 GetMac = 0xf2,
87 Reset = 0xf4,
88 SetMac = 0xf5,
89 SetRxMode = 0xf5, /* F5U011 only */
90 WriteROM = 0xf8,
91 SetReg = 0xfa,
92 GetReg = 0xfb,
93 WriteMem = 0xfc,
94 ReadROM = 0xfd,
95 };
96
97 /*
98 * Registers.
99 */
100
101 enum register_offsets {
102 TxBufCount = 0x20,
103 RxBufCount = 0x21,
104 OpModes = 0x22,
105 TxQed = 0x23,
106 RxQed = 0x24,
107 MaxBurst = 0x25,
108 RxUnit = 0x60,
109 EthStatus = 0x61,
110 StationAddr0 = 0x67,
111 EthStats = 0x69,
112 LEDCtrl = 0x81,
113 };
114
115 enum eth_stats {
116 TxSingleColl = 0x00,
117 TxMultiColl = 0x02,
118 TxExcessColl = 0x04,
119 RxFramErr = 0x06,
120 };
121
122 enum op_mode_bits {
123 Op3MemWaits = 0x03,
124 OpLenInclude = 0x08,
125 OpRxMerge = 0x10,
126 OpTxMerge = 0x20,
127 OpWin95bugfix = 0x40,
128 OpLoopback = 0x80,
129 };
130
131 enum rx_filter_bits {
132 RxEnable = 0x01,
133 RxPolarity = 0x02,
134 RxForceOK = 0x04,
135 RxMultiCast = 0x08,
136 RxPromisc = 0x10,
137 AltRxPromisc = 0x20, /* F5U011 uses different bit */
138 };
139
140 enum led_values {
141 LEDFast = 0x01,
142 LEDSlow = 0x02,
143 LEDFlash = 0x03,
144 LEDPulse = 0x04,
145 LEDLink = 0x08,
146 };
147
148 enum link_status {
149 LinkNoChange = 0,
150 LinkGood = 1,
151 LinkBad = 2
152 };
153
154 /*
155 * The catc struct.
156 */
157
158 #define CTRL_RUNNING 0
159 #define RX_RUNNING 1
160 #define TX_RUNNING 2
161
162 struct catc {
163 struct net_device *netdev;
164 struct usb_device *usbdev;
165
166 struct net_device_stats stats;
167 unsigned long flags;
168
169 unsigned int tx_ptr, tx_idx;
170 unsigned int ctrl_head, ctrl_tail;
171 spinlock_t tx_lock, ctrl_lock;
172
173 u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)];
174 u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)];
175 u8 irq_buf[2];
176 u8 ctrl_buf[64];
177 struct usb_ctrlrequest ctrl_dr;
178
179 struct timer_list timer;
180 u8 stats_buf[8];
181 u16 stats_vals[4];
182 unsigned long last_stats;
183
184 u8 multicast[64];
185
186 struct ctrl_queue {
187 u8 dir;
188 u8 request;
189 u16 value;
190 u16 index;
191 void *buf;
192 int len;
193 void (*callback)(struct catc *catc, struct ctrl_queue *q);
194 } ctrl_queue[CTRL_QUEUE];
195
196 struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb;
197
198 u8 is_f5u011; /* Set if device is an F5U011 */
199 u8 rxmode[2]; /* Used for F5U011 */
200 atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */
201 };
202
203 /*
204 * Useful macros.
205 */
206
207 #define catc_get_mac(catc, mac) catc_ctrl_msg(catc, USB_DIR_IN, GetMac, 0, 0, mac, 6)
208 #define catc_reset(catc) catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0)
209 #define catc_set_reg(catc, reg, val) catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0)
210 #define catc_get_reg(catc, reg, buf) catc_ctrl_msg(catc, USB_DIR_IN, GetReg, 0, reg, buf, 1)
211 #define catc_write_mem(catc, addr, buf, size) catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size)
212 #define catc_read_mem(catc, addr, buf, size) catc_ctrl_msg(catc, USB_DIR_IN, ReadMem, 0, addr, buf, size)
213
214 #define f5u011_rxmode(catc, rxmode) catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2)
215 #define f5u011_rxmode_async(catc, rxmode) catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL)
216 #define f5u011_mchash_async(catc, hash) catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL)
217
218 #define catc_set_reg_async(catc, reg, val) catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL)
219 #define catc_get_reg_async(catc, reg, cb) catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb)
220 #define catc_write_mem_async(catc, addr, buf, size) catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL)
221
222 /*
223 * Receive routines.
224 */
225
226 static void catc_rx_done(struct urb *urb)
227 {
228 struct catc *catc = urb->context;
229 u8 *pkt_start = urb->transfer_buffer;
230 struct sk_buff *skb;
231 int pkt_len, pkt_offset = 0;
232
233 if (!catc->is_f5u011) {
234 clear_bit(RX_RUNNING, &catc->flags);
235 pkt_offset = 2;
236 }
237
238 if (urb->status) {
239 dbg("rx_done, status %d, length %d", urb->status, urb->actual_length);
240 return;
241 }
242
243 do {
244 if(!catc->is_f5u011) {
245 pkt_len = le16_to_cpup((__le16*)pkt_start);
246 if (pkt_len > urb->actual_length) {
247 catc->stats.rx_length_errors++;
248 catc->stats.rx_errors++;
249 break;
250 }
251 } else {
252 pkt_len = urb->actual_length;
253 }
254
255 if (!(skb = dev_alloc_skb(pkt_len)))
256 return;
257
258 skb_copy_to_linear_data(skb, pkt_start + pkt_offset, pkt_len);
259 skb_put(skb, pkt_len);
260
261 skb->protocol = eth_type_trans(skb, catc->netdev);
262 netif_rx(skb);
263
264 catc->stats.rx_packets++;
265 catc->stats.rx_bytes += pkt_len;
266
267 /* F5U011 only does one packet per RX */
268 if (catc->is_f5u011)
269 break;
270 pkt_start += (((pkt_len + 1) >> 6) + 1) << 6;
271
272 } while (pkt_start - (u8 *) urb->transfer_buffer < urb->actual_length);
273
274 catc->netdev->last_rx = jiffies;
275
276 if (catc->is_f5u011) {
277 if (atomic_read(&catc->recq_sz)) {
278 int status;
279 atomic_dec(&catc->recq_sz);
280 dbg("getting extra packet");
281 urb->dev = catc->usbdev;
282 if ((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
283 dbg("submit(rx_urb) status %d", status);
284 }
285 } else {
286 clear_bit(RX_RUNNING, &catc->flags);
287 }
288 }
289 }
290
291 static void catc_irq_done(struct urb *urb)
292 {
293 struct catc *catc = urb->context;
294 u8 *data = urb->transfer_buffer;
295 int status;
296 unsigned int hasdata = 0, linksts = LinkNoChange;
297
298 if (!catc->is_f5u011) {
299 hasdata = data[1] & 0x80;
300 if (data[1] & 0x40)
301 linksts = LinkGood;
302 else if (data[1] & 0x20)
303 linksts = LinkBad;
304 } else {
305 hasdata = (unsigned int)(be16_to_cpup((__be16*)data) & 0x0fff);
306 if (data[0] == 0x90)
307 linksts = LinkGood;
308 else if (data[0] == 0xA0)
309 linksts = LinkBad;
310 }
311
312 switch (urb->status) {
313 case 0: /* success */
314 break;
315 case -ECONNRESET: /* unlink */
316 case -ENOENT:
317 case -ESHUTDOWN:
318 return;
319 /* -EPIPE: should clear the halt */
320 default: /* error */
321 dbg("irq_done, status %d, data %02x %02x.", urb->status, data[0], data[1]);
322 goto resubmit;
323 }
324
325 if (linksts == LinkGood) {
326 netif_carrier_on(catc->netdev);
327 dbg("link ok");
328 }
329
330 if (linksts == LinkBad) {
331 netif_carrier_off(catc->netdev);
332 dbg("link bad");
333 }
334
335 if (hasdata) {
336 if (test_and_set_bit(RX_RUNNING, &catc->flags)) {
337 if (catc->is_f5u011)
338 atomic_inc(&catc->recq_sz);
339 } else {
340 catc->rx_urb->dev = catc->usbdev;
341 if ((status = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {
342 err("submit(rx_urb) status %d", status);
343 }
344 }
345 }
346 resubmit:
347 status = usb_submit_urb (urb, GFP_ATOMIC);
348 if (status)
349 err ("can't resubmit intr, %s-%s, status %d",
350 catc->usbdev->bus->bus_name,
351 catc->usbdev->devpath, status);
352 }
353
354 /*
355 * Transmit routines.
356 */
357
358 static int catc_tx_run(struct catc *catc)
359 {
360 int status;
361
362 if (catc->is_f5u011)
363 catc->tx_ptr = (catc->tx_ptr + 63) & ~63;
364
365 catc->tx_urb->transfer_buffer_length = catc->tx_ptr;
366 catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx];
367 catc->tx_urb->dev = catc->usbdev;
368
369 if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0)
370 err("submit(tx_urb), status %d", status);
371
372 catc->tx_idx = !catc->tx_idx;
373 catc->tx_ptr = 0;
374
375 catc->netdev->trans_start = jiffies;
376 return status;
377 }
378
379 static void catc_tx_done(struct urb *urb)
380 {
381 struct catc *catc = urb->context;
382 unsigned long flags;
383 int r;
384
385 if (urb->status == -ECONNRESET) {
386 dbg("Tx Reset.");
387 urb->status = 0;
388 catc->netdev->trans_start = jiffies;
389 catc->stats.tx_errors++;
390 clear_bit(TX_RUNNING, &catc->flags);
391 netif_wake_queue(catc->netdev);
392 return;
393 }
394
395 if (urb->status) {
396 dbg("tx_done, status %d, length %d", urb->status, urb->actual_length);
397 return;
398 }
399
400 spin_lock_irqsave(&catc->tx_lock, flags);
401
402 if (catc->tx_ptr) {
403 r = catc_tx_run(catc);
404 if (unlikely(r < 0))
405 clear_bit(TX_RUNNING, &catc->flags);
406 } else {
407 clear_bit(TX_RUNNING, &catc->flags);
408 }
409
410 netif_wake_queue(catc->netdev);
411
412 spin_unlock_irqrestore(&catc->tx_lock, flags);
413 }
414
415 static int catc_hard_start_xmit(struct sk_buff *skb, struct net_device *netdev)
416 {
417 struct catc *catc = netdev_priv(netdev);
418 unsigned long flags;
419 int r = 0;
420 char *tx_buf;
421
422 spin_lock_irqsave(&catc->tx_lock, flags);
423
424 catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
425 tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
426 *((u16*)tx_buf) = (catc->is_f5u011) ? cpu_to_be16((u16)skb->len) : cpu_to_le16((u16)skb->len);
427 skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
428 catc->tx_ptr += skb->len + 2;
429
430 if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {
431 r = catc_tx_run(catc);
432 if (r < 0)
433 clear_bit(TX_RUNNING, &catc->flags);
434 }
435
436 if ((catc->is_f5u011 && catc->tx_ptr)
437 || (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
438 netif_stop_queue(netdev);
439
440 spin_unlock_irqrestore(&catc->tx_lock, flags);
441
442 if (r >= 0) {
443 catc->stats.tx_bytes += skb->len;
444 catc->stats.tx_packets++;
445 }
446
447 dev_kfree_skb(skb);
448
449 return 0;
450 }
451
452 static void catc_tx_timeout(struct net_device *netdev)
453 {
454 struct catc *catc = netdev_priv(netdev);
455
456 warn("Transmit timed out.");
457 usb_unlink_urb(catc->tx_urb);
458 }
459
460 /*
461 * Control messages.
462 */
463
464 static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
465 {
466 int retval = usb_control_msg(catc->usbdev,
467 dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),
468 request, 0x40 | dir, value, index, buf, len, 1000);
469 return retval < 0 ? retval : 0;
470 }
471
472 static void catc_ctrl_run(struct catc *catc)
473 {
474 struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;
475 struct usb_device *usbdev = catc->usbdev;
476 struct urb *urb = catc->ctrl_urb;
477 struct usb_ctrlrequest *dr = &catc->ctrl_dr;
478 int status;
479
480 dr->bRequest = q->request;
481 dr->bRequestType = 0x40 | q->dir;
482 dr->wValue = cpu_to_le16(q->value);
483 dr->wIndex = cpu_to_le16(q->index);
484 dr->wLength = cpu_to_le16(q->len);
485
486 urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);
487 urb->transfer_buffer_length = q->len;
488 urb->transfer_buffer = catc->ctrl_buf;
489 urb->setup_packet = (void *) dr;
490 urb->dev = usbdev;
491
492 if (!q->dir && q->buf && q->len)
493 memcpy(catc->ctrl_buf, q->buf, q->len);
494
495 if ((status = usb_submit_urb(catc->ctrl_urb, GFP_KERNEL)))
496 err("submit(ctrl_urb) status %d", status);
497 }
498
499 static void catc_ctrl_done(struct urb *urb)
500 {
501 struct catc *catc = urb->context;
502 struct ctrl_queue *q;
503 unsigned long flags;
504
505 if (urb->status)
506 dbg("ctrl_done, status %d, len %d.", urb->status, urb->actual_length);
507
508 spin_lock_irqsave(&catc->ctrl_lock, flags);
509
510 q = catc->ctrl_queue + catc->ctrl_tail;
511
512 if (q->dir) {
513 if (q->buf && q->len)
514 memcpy(q->buf, catc->ctrl_buf, q->len);
515 else
516 q->buf = catc->ctrl_buf;
517 }
518
519 if (q->callback)
520 q->callback(catc, q);
521
522 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
523
524 if (catc->ctrl_head != catc->ctrl_tail)
525 catc_ctrl_run(catc);
526 else
527 clear_bit(CTRL_RUNNING, &catc->flags);
528
529 spin_unlock_irqrestore(&catc->ctrl_lock, flags);
530 }
531
532 static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,
533 u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))
534 {
535 struct ctrl_queue *q;
536 int retval = 0;
537 unsigned long flags;
538
539 spin_lock_irqsave(&catc->ctrl_lock, flags);
540
541 q = catc->ctrl_queue + catc->ctrl_head;
542
543 q->dir = dir;
544 q->request = request;
545 q->value = value;
546 q->index = index;
547 q->buf = buf;
548 q->len = len;
549 q->callback = callback;
550
551 catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);
552
553 if (catc->ctrl_head == catc->ctrl_tail) {
554 err("ctrl queue full");
555 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
556 retval = -1;
557 }
558
559 if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))
560 catc_ctrl_run(catc);
561
562 spin_unlock_irqrestore(&catc->ctrl_lock, flags);
563
564 return retval;
565 }
566
567 /*
568 * Statistics.
569 */
570
571 static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)
572 {
573 int index = q->index - EthStats;
574 u16 data, last;
575
576 catc->stats_buf[index] = *((char *)q->buf);
577
578 if (index & 1)
579 return;
580
581 data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];
582 last = catc->stats_vals[index >> 1];
583
584 switch (index) {
585 case TxSingleColl:
586 case TxMultiColl:
587 catc->stats.collisions += data - last;
588 break;
589 case TxExcessColl:
590 catc->stats.tx_aborted_errors += data - last;
591 catc->stats.tx_errors += data - last;
592 break;
593 case RxFramErr:
594 catc->stats.rx_frame_errors += data - last;
595 catc->stats.rx_errors += data - last;
596 break;
597 }
598
599 catc->stats_vals[index >> 1] = data;
600 }
601
602 static void catc_stats_timer(unsigned long data)
603 {
604 struct catc *catc = (void *) data;
605 int i;
606
607 for (i = 0; i < 8; i++)
608 catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);
609
610 mod_timer(&catc->timer, jiffies + STATS_UPDATE);
611 }
612
613 static struct net_device_stats *catc_get_stats(struct net_device *netdev)
614 {
615 struct catc *catc = netdev_priv(netdev);
616 return &catc->stats;
617 }
618
619 /*
620 * Receive modes. Broadcast, Multicast, Promisc.
621 */
622
623 static void catc_multicast(unsigned char *addr, u8 *multicast)
624 {
625 u32 crc;
626
627 crc = ether_crc_le(6, addr);
628 multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
629 }
630
631 static void catc_set_multicast_list(struct net_device *netdev)
632 {
633 struct catc *catc = netdev_priv(netdev);
634 struct dev_mc_list *mc;
635 u8 broadcast[6];
636 u8 rx = RxEnable | RxPolarity | RxMultiCast;
637 int i;
638
639 memset(broadcast, 0xff, 6);
640 memset(catc->multicast, 0, 64);
641
642 catc_multicast(broadcast, catc->multicast);
643 catc_multicast(netdev->dev_addr, catc->multicast);
644
645 if (netdev->flags & IFF_PROMISC) {
646 memset(catc->multicast, 0xff, 64);
647 rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;
648 }
649
650 if (netdev->flags & IFF_ALLMULTI) {
651 memset(catc->multicast, 0xff, 64);
652 } else {
653 for (i = 0, mc = netdev->mc_list; mc && i < netdev->mc_count; i++, mc = mc->next) {
654 u32 crc = ether_crc_le(6, mc->dmi_addr);
655 if (!catc->is_f5u011) {
656 catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
657 } else {
658 catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);
659 }
660 }
661 }
662 if (!catc->is_f5u011) {
663 catc_set_reg_async(catc, RxUnit, rx);
664 catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);
665 } else {
666 f5u011_mchash_async(catc, catc->multicast);
667 if (catc->rxmode[0] != rx) {
668 catc->rxmode[0] = rx;
669 dbg("Setting RX mode to %2.2X %2.2X", catc->rxmode[0], catc->rxmode[1]);
670 f5u011_rxmode_async(catc, catc->rxmode);
671 }
672 }
673 }
674
675 static void catc_get_drvinfo(struct net_device *dev,
676 struct ethtool_drvinfo *info)
677 {
678 struct catc *catc = netdev_priv(dev);
679 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
680 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
681 usb_make_path (catc->usbdev, info->bus_info, sizeof info->bus_info);
682 }
683
684 static int catc_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
685 {
686 struct catc *catc = netdev_priv(dev);
687 if (!catc->is_f5u011)
688 return -EOPNOTSUPP;
689
690 cmd->supported = SUPPORTED_10baseT_Half | SUPPORTED_TP;
691 cmd->advertising = ADVERTISED_10baseT_Half | ADVERTISED_TP;
692 cmd->speed = SPEED_10;
693 cmd->duplex = DUPLEX_HALF;
694 cmd->port = PORT_TP;
695 cmd->phy_address = 0;
696 cmd->transceiver = XCVR_INTERNAL;
697 cmd->autoneg = AUTONEG_DISABLE;
698 cmd->maxtxpkt = 1;
699 cmd->maxrxpkt = 1;
700 return 0;
701 }
702
703 static struct ethtool_ops ops = {
704 .get_drvinfo = catc_get_drvinfo,
705 .get_settings = catc_get_settings,
706 .get_link = ethtool_op_get_link
707 };
708
709 /*
710 * Open, close.
711 */
712
713 static int catc_open(struct net_device *netdev)
714 {
715 struct catc *catc = netdev_priv(netdev);
716 int status;
717
718 catc->irq_urb->dev = catc->usbdev;
719 if ((status = usb_submit_urb(catc->irq_urb, GFP_KERNEL)) < 0) {
720 err("submit(irq_urb) status %d", status);
721 return -1;
722 }
723
724 netif_start_queue(netdev);
725
726 if (!catc->is_f5u011)
727 mod_timer(&catc->timer, jiffies + STATS_UPDATE);
728
729 return 0;
730 }
731
732 static int catc_stop(struct net_device *netdev)
733 {
734 struct catc *catc = netdev_priv(netdev);
735
736 netif_stop_queue(netdev);
737
738 if (!catc->is_f5u011)
739 del_timer_sync(&catc->timer);
740
741 usb_kill_urb(catc->rx_urb);
742 usb_kill_urb(catc->tx_urb);
743 usb_kill_urb(catc->irq_urb);
744 usb_kill_urb(catc->ctrl_urb);
745
746 return 0;
747 }
748
749 /*
750 * USB probe, disconnect.
751 */
752
753 static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)
754 {
755 struct usb_device *usbdev = interface_to_usbdev(intf);
756 struct net_device *netdev;
757 struct catc *catc;
758 u8 broadcast[6];
759 int i, pktsz;
760
761 if (usb_set_interface(usbdev,
762 intf->altsetting->desc.bInterfaceNumber, 1)) {
763 err("Can't set altsetting 1.");
764 return -EIO;
765 }
766
767 netdev = alloc_etherdev(sizeof(struct catc));
768 if (!netdev)
769 return -ENOMEM;
770
771 catc = netdev_priv(netdev);
772
773 netdev->open = catc_open;
774 netdev->hard_start_xmit = catc_hard_start_xmit;
775 netdev->stop = catc_stop;
776 netdev->get_stats = catc_get_stats;
777 netdev->tx_timeout = catc_tx_timeout;
778 netdev->watchdog_timeo = TX_TIMEOUT;
779 netdev->set_multicast_list = catc_set_multicast_list;
780 SET_ETHTOOL_OPS(netdev, &ops);
781
782 catc->usbdev = usbdev;
783 catc->netdev = netdev;
784
785 spin_lock_init(&catc->tx_lock);
786 spin_lock_init(&catc->ctrl_lock);
787
788 init_timer(&catc->timer);
789 catc->timer.data = (long) catc;
790 catc->timer.function = catc_stats_timer;
791
792 catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
793 catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
794 catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
795 catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
796 if ((!catc->ctrl_urb) || (!catc->tx_urb) ||
797 (!catc->rx_urb) || (!catc->irq_urb)) {
798 err("No free urbs available.");
799 usb_free_urb(catc->ctrl_urb);
800 usb_free_urb(catc->tx_urb);
801 usb_free_urb(catc->rx_urb);
802 usb_free_urb(catc->irq_urb);
803 free_netdev(netdev);
804 return -ENOMEM;
805 }
806
807 /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
808 if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 &&
809 le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
810 le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
811 dbg("Testing for f5u011");
812 catc->is_f5u011 = 1;
813 atomic_set(&catc->recq_sz, 0);
814 pktsz = RX_PKT_SZ;
815 } else {
816 pktsz = RX_MAX_BURST * (PKT_SZ + 2);
817 }
818
819 usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
820 NULL, NULL, 0, catc_ctrl_done, catc);
821
822 usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
823 NULL, 0, catc_tx_done, catc);
824
825 usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
826 catc->rx_buf, pktsz, catc_rx_done, catc);
827
828 usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
829 catc->irq_buf, 2, catc_irq_done, catc, 1);
830
831 if (!catc->is_f5u011) {
832 dbg("Checking memory size\n");
833
834 i = 0x12345678;
835 catc_write_mem(catc, 0x7a80, &i, 4);
836 i = 0x87654321;
837 catc_write_mem(catc, 0xfa80, &i, 4);
838 catc_read_mem(catc, 0x7a80, &i, 4);
839
840 switch (i) {
841 case 0x12345678:
842 catc_set_reg(catc, TxBufCount, 8);
843 catc_set_reg(catc, RxBufCount, 32);
844 dbg("64k Memory\n");
845 break;
846 default:
847 warn("Couldn't detect memory size, assuming 32k");
848 case 0x87654321:
849 catc_set_reg(catc, TxBufCount, 4);
850 catc_set_reg(catc, RxBufCount, 16);
851 dbg("32k Memory\n");
852 break;
853 }
854
855 dbg("Getting MAC from SEEROM.");
856
857 catc_get_mac(catc, netdev->dev_addr);
858
859 dbg("Setting MAC into registers.");
860
861 for (i = 0; i < 6; i++)
862 catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
863
864 dbg("Filling the multicast list.");
865
866 memset(broadcast, 0xff, 6);
867 catc_multicast(broadcast, catc->multicast);
868 catc_multicast(netdev->dev_addr, catc->multicast);
869 catc_write_mem(catc, 0xfa80, catc->multicast, 64);
870
871 dbg("Clearing error counters.");
872
873 for (i = 0; i < 8; i++)
874 catc_set_reg(catc, EthStats + i, 0);
875 catc->last_stats = jiffies;
876
877 dbg("Enabling.");
878
879 catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
880 catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
881 catc_set_reg(catc, LEDCtrl, LEDLink);
882 catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
883 } else {
884 dbg("Performing reset\n");
885 catc_reset(catc);
886 catc_get_mac(catc, netdev->dev_addr);
887
888 dbg("Setting RX Mode");
889 catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
890 catc->rxmode[1] = 0;
891 f5u011_rxmode(catc, catc->rxmode);
892 }
893 dbg("Init done.");
894 printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, ",
895 netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
896 usbdev->bus->bus_name, usbdev->devpath);
897 for (i = 0; i < 5; i++) printk("%2.2x:", netdev->dev_addr[i]);
898 printk("%2.2x.\n", netdev->dev_addr[i]);
899 usb_set_intfdata(intf, catc);
900
901 SET_NETDEV_DEV(netdev, &intf->dev);
902 if (register_netdev(netdev) != 0) {
903 usb_set_intfdata(intf, NULL);
904 usb_free_urb(catc->ctrl_urb);
905 usb_free_urb(catc->tx_urb);
906 usb_free_urb(catc->rx_urb);
907 usb_free_urb(catc->irq_urb);
908 free_netdev(netdev);
909 return -EIO;
910 }
911 return 0;
912 }
913
914 static void catc_disconnect(struct usb_interface *intf)
915 {
916 struct catc *catc = usb_get_intfdata(intf);
917
918 usb_set_intfdata(intf, NULL);
919 if (catc) {
920 unregister_netdev(catc->netdev);
921 usb_free_urb(catc->ctrl_urb);
922 usb_free_urb(catc->tx_urb);
923 usb_free_urb(catc->rx_urb);
924 usb_free_urb(catc->irq_urb);
925 free_netdev(catc->netdev);
926 }
927 }
928
929 /*
930 * Module functions and tables.
931 */
932
933 static struct usb_device_id catc_id_table [] = {
934 { USB_DEVICE(0x0423, 0xa) }, /* CATC Netmate, Belkin F5U011 */
935 { USB_DEVICE(0x0423, 0xc) }, /* CATC Netmate II, Belkin F5U111 */
936 { USB_DEVICE(0x08d1, 0x1) }, /* smartBridges smartNIC */
937 { }
938 };
939
940 MODULE_DEVICE_TABLE(usb, catc_id_table);
941
942 static struct usb_driver catc_driver = {
943 .name = driver_name,
944 .probe = catc_probe,
945 .disconnect = catc_disconnect,
946 .id_table = catc_id_table,
947 };
948
949 static int __init catc_init(void)
950 {
951 int result = usb_register(&catc_driver);
952 if (result == 0)
953 info(DRIVER_VERSION " " DRIVER_DESC);
954 return result;
955 }
956
957 static void __exit catc_exit(void)
958 {
959 usb_deregister(&catc_driver);
960 }
961
962 module_init(catc_init);
963 module_exit(catc_exit);
WRT350N Kernel Patches