1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2001 Vojtech Pavlik
4 *
5 * CATC EL1210A NetMate USB Ethernet driver
6 *
7 * Sponsored by SuSE
8 *
9 * Based on the work of
10 * Donald Becker
11 *
12 * Old chipset support added by Simon Evans <spse@secret.org.uk> 2002
13 * - adds support for Belkin F5U011
14 */
15
16 /*
17 *
18 * Should you need to contact me, the author, you can do so either by
19 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
20 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
21 */
22
23 #include <linux/module.h>
24 #include <linux/kernel.h>
25 #include <linux/string.h>
26 #include <linux/netdevice.h>
27 #include <linux/etherdevice.h>
28 #include <linux/skbuff.h>
29 #include <linux/spinlock.h>
30 #include <linux/ethtool.h>
31 #include <linux/crc32.h>
32 #include <linux/bitops.h>
33 #include <linux/gfp.h>
34 #include <linux/uaccess.h>
35
36 #undef DEBUG
37
38 #include <linux/usb.h>
39
40 /*
41 * Version information.
42 */
43
44 #define DRIVER_VERSION "v2.8"
45 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>"
46 #define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver"
47 #define SHORT_DRIVER_DESC "EL1210A NetMate USB Ethernet"
48
49 MODULE_AUTHOR(DRIVER_AUTHOR);
50 MODULE_DESCRIPTION(DRIVER_DESC);
51 MODULE_LICENSE("GPL");
52
53 static const char driver_name[] = "catc";
54
55 /*
56 * Some defines.
57 */
58
59 #define STATS_UPDATE (HZ) /* Time between stats updates */
60 #define TX_TIMEOUT (5*HZ) /* Max time the queue can be stopped */
61 #define PKT_SZ 1536 /* Max Ethernet packet size */
62 #define RX_MAX_BURST 15 /* Max packets per rx buffer (> 0, < 16) */
63 #define TX_MAX_BURST 15 /* Max full sized packets per tx buffer (> 0) */
64 #define CTRL_QUEUE 16 /* Max control requests in flight (power of two) */
65 #define RX_PKT_SZ 1600 /* Max size of receive packet for F5U011 */
66
67 /*
68 * Control requests.
69 */
70
71 enum control_requests {
72 ReadMem = 0xf1,
73 GetMac = 0xf2,
74 Reset = 0xf4,
75 SetMac = 0xf5,
76 SetRxMode = 0xf5, /* F5U011 only */
77 WriteROM = 0xf8,
78 SetReg = 0xfa,
79 GetReg = 0xfb,
80 WriteMem = 0xfc,
81 ReadROM = 0xfd,
82 };
83
84 /*
85 * Registers.
86 */
87
88 enum register_offsets {
89 TxBufCount = 0x20,
90 RxBufCount = 0x21,
91 OpModes = 0x22,
92 TxQed = 0x23,
93 RxQed = 0x24,
94 MaxBurst = 0x25,
95 RxUnit = 0x60,
96 EthStatus = 0x61,
97 StationAddr0 = 0x67,
98 EthStats = 0x69,
99 LEDCtrl = 0x81,
100 };
101
102 enum eth_stats {
103 TxSingleColl = 0x00,
104 TxMultiColl = 0x02,
105 TxExcessColl = 0x04,
106 RxFramErr = 0x06,
107 };
108
109 enum op_mode_bits {
110 Op3MemWaits = 0x03,
111 OpLenInclude = 0x08,
112 OpRxMerge = 0x10,
113 OpTxMerge = 0x20,
114 OpWin95bugfix = 0x40,
115 OpLoopback = 0x80,
116 };
117
118 enum rx_filter_bits {
119 RxEnable = 0x01,
120 RxPolarity = 0x02,
121 RxForceOK = 0x04,
122 RxMultiCast = 0x08,
123 RxPromisc = 0x10,
124 AltRxPromisc = 0x20, /* F5U011 uses different bit */
125 };
126
127 enum led_values {
128 LEDFast = 0x01,
129 LEDSlow = 0x02,
130 LEDFlash = 0x03,
131 LEDPulse = 0x04,
132 LEDLink = 0x08,
133 };
134
135 enum link_status {
136 LinkNoChange = 0,
137 LinkGood = 1,
138 LinkBad = 2
139 };
140
141 /*
142 * The catc struct.
143 */
144
145 #define CTRL_RUNNING 0
146 #define RX_RUNNING 1
147 #define TX_RUNNING 2
148
149 struct catc {
150 struct net_device *netdev;
151 struct usb_device *usbdev;
152
153 unsigned long flags;
154
155 unsigned int tx_ptr, tx_idx;
156 unsigned int ctrl_head, ctrl_tail;
157 spinlock_t tx_lock, ctrl_lock;
158
159 u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)];
160 u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)];
161 u8 irq_buf[2];
162 u8 ctrl_buf[64];
163 struct usb_ctrlrequest ctrl_dr;
164
165 struct timer_list timer;
166 u8 stats_buf[8];
167 u16 stats_vals[4];
168 unsigned long last_stats;
169
170 u8 multicast[64];
171
172 struct ctrl_queue {
173 u8 dir;
174 u8 request;
175 u16 value;
176 u16 index;
177 void *buf;
178 int len;
179 void (*callback)(struct catc *catc, struct ctrl_queue *q);
180 } ctrl_queue[CTRL_QUEUE];
181
182 struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb;
183
184 u8 is_f5u011; /* Set if device is an F5U011 */
185 u8 rxmode[2]; /* Used for F5U011 */
186 atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */
187 };
188
189 /*
190 * Useful macros.
191 */
192
193 #define catc_get_mac(catc, mac) catc_ctrl_msg(catc, USB_DIR_IN, GetMac, 0, 0, mac, 6)
194 #define catc_reset(catc) catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0)
195 #define catc_set_reg(catc, reg, val) catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0)
196 #define catc_get_reg(catc, reg, buf) catc_ctrl_msg(catc, USB_DIR_IN, GetReg, 0, reg, buf, 1)
197 #define catc_write_mem(catc, addr, buf, size) catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size)
198 #define catc_read_mem(catc, addr, buf, size) catc_ctrl_msg(catc, USB_DIR_IN, ReadMem, 0, addr, buf, size)
199
200 #define f5u011_rxmode(catc, rxmode) catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2)
201 #define f5u011_rxmode_async(catc, rxmode) catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL)
202 #define f5u011_mchash_async(catc, hash) catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL)
203
204 #define catc_set_reg_async(catc, reg, val) catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL)
205 #define catc_get_reg_async(catc, reg, cb) catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb)
206 #define catc_write_mem_async(catc, addr, buf, size) catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL)
207
208 /*
209 * Receive routines.
210 */
211
catc_rx_done(struct urb * urb)212 static void catc_rx_done(struct urb *urb)
213 {
214 struct catc *catc = urb->context;
215 u8 *pkt_start = urb->transfer_buffer;
216 struct sk_buff *skb;
217 int pkt_len, pkt_offset = 0;
218 int status = urb->status;
219
220 if (!catc->is_f5u011) {
221 clear_bit(RX_RUNNING, &catc->flags);
222 pkt_offset = 2;
223 }
224
225 if (status) {
226 dev_dbg(&urb->dev->dev, "rx_done, status %d, length %d\n",
227 status, urb->actual_length);
228 return;
229 }
230
231 do {
232 if(!catc->is_f5u011) {
233 pkt_len = le16_to_cpup((__le16*)pkt_start);
234 if (pkt_len > urb->actual_length) {
235 catc->netdev->stats.rx_length_errors++;
236 catc->netdev->stats.rx_errors++;
237 break;
238 }
239 } else {
240 pkt_len = urb->actual_length;
241 }
242
243 if (!(skb = dev_alloc_skb(pkt_len)))
244 return;
245
246 skb_copy_to_linear_data(skb, pkt_start + pkt_offset, pkt_len);
247 skb_put(skb, pkt_len);
248
249 skb->protocol = eth_type_trans(skb, catc->netdev);
250 netif_rx(skb);
251
252 catc->netdev->stats.rx_packets++;
253 catc->netdev->stats.rx_bytes += pkt_len;
254
255 /* F5U011 only does one packet per RX */
256 if (catc->is_f5u011)
257 break;
258 pkt_start += (((pkt_len + 1) >> 6) + 1) << 6;
259
260 } while (pkt_start - (u8 *) urb->transfer_buffer < urb->actual_length);
261
262 if (catc->is_f5u011) {
263 if (atomic_read(&catc->recq_sz)) {
264 int state;
265 atomic_dec(&catc->recq_sz);
266 netdev_dbg(catc->netdev, "getting extra packet\n");
267 urb->dev = catc->usbdev;
268 if ((state = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
269 netdev_dbg(catc->netdev,
270 "submit(rx_urb) status %d\n", state);
271 }
272 } else {
273 clear_bit(RX_RUNNING, &catc->flags);
274 }
275 }
276 }
277
catc_irq_done(struct urb * urb)278 static void catc_irq_done(struct urb *urb)
279 {
280 struct catc *catc = urb->context;
281 u8 *data = urb->transfer_buffer;
282 int status = urb->status;
283 unsigned int hasdata, linksts = LinkNoChange;
284 int res;
285
286 if (!catc->is_f5u011) {
287 hasdata = data[1] & 0x80;
288 if (data[1] & 0x40)
289 linksts = LinkGood;
290 else if (data[1] & 0x20)
291 linksts = LinkBad;
292 } else {
293 hasdata = (unsigned int)(be16_to_cpup((__be16*)data) & 0x0fff);
294 if (data[0] == 0x90)
295 linksts = LinkGood;
296 else if (data[0] == 0xA0)
297 linksts = LinkBad;
298 }
299
300 switch (status) {
301 case 0: /* success */
302 break;
303 case -ECONNRESET: /* unlink */
304 case -ENOENT:
305 case -ESHUTDOWN:
306 return;
307 /* -EPIPE: should clear the halt */
308 default: /* error */
309 dev_dbg(&urb->dev->dev,
310 "irq_done, status %d, data %02x %02x.\n",
311 status, data[0], data[1]);
312 goto resubmit;
313 }
314
315 if (linksts == LinkGood) {
316 netif_carrier_on(catc->netdev);
317 netdev_dbg(catc->netdev, "link ok\n");
318 }
319
320 if (linksts == LinkBad) {
321 netif_carrier_off(catc->netdev);
322 netdev_dbg(catc->netdev, "link bad\n");
323 }
324
325 if (hasdata) {
326 if (test_and_set_bit(RX_RUNNING, &catc->flags)) {
327 if (catc->is_f5u011)
328 atomic_inc(&catc->recq_sz);
329 } else {
330 catc->rx_urb->dev = catc->usbdev;
331 if ((res = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {
332 dev_err(&catc->usbdev->dev,
333 "submit(rx_urb) status %d\n", res);
334 }
335 }
336 }
337 resubmit:
338 res = usb_submit_urb (urb, GFP_ATOMIC);
339 if (res)
340 dev_err(&catc->usbdev->dev,
341 "can't resubmit intr, %s-%s, status %d\n",
342 catc->usbdev->bus->bus_name,
343 catc->usbdev->devpath, res);
344 }
345
346 /*
347 * Transmit routines.
348 */
349
catc_tx_run(struct catc * catc)350 static int catc_tx_run(struct catc *catc)
351 {
352 int status;
353
354 if (catc->is_f5u011)
355 catc->tx_ptr = (catc->tx_ptr + 63) & ~63;
356
357 catc->tx_urb->transfer_buffer_length = catc->tx_ptr;
358 catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx];
359 catc->tx_urb->dev = catc->usbdev;
360
361 if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0)
362 dev_err(&catc->usbdev->dev, "submit(tx_urb), status %d\n",
363 status);
364
365 catc->tx_idx = !catc->tx_idx;
366 catc->tx_ptr = 0;
367
368 netif_trans_update(catc->netdev);
369 return status;
370 }
371
catc_tx_done(struct urb * urb)372 static void catc_tx_done(struct urb *urb)
373 {
374 struct catc *catc = urb->context;
375 unsigned long flags;
376 int r, status = urb->status;
377
378 if (status == -ECONNRESET) {
379 dev_dbg(&urb->dev->dev, "Tx Reset.\n");
380 urb->status = 0;
381 netif_trans_update(catc->netdev);
382 catc->netdev->stats.tx_errors++;
383 clear_bit(TX_RUNNING, &catc->flags);
384 netif_wake_queue(catc->netdev);
385 return;
386 }
387
388 if (status) {
389 dev_dbg(&urb->dev->dev, "tx_done, status %d, length %d\n",
390 status, urb->actual_length);
391 return;
392 }
393
394 spin_lock_irqsave(&catc->tx_lock, flags);
395
396 if (catc->tx_ptr) {
397 r = catc_tx_run(catc);
398 if (unlikely(r < 0))
399 clear_bit(TX_RUNNING, &catc->flags);
400 } else {
401 clear_bit(TX_RUNNING, &catc->flags);
402 }
403
404 netif_wake_queue(catc->netdev);
405
406 spin_unlock_irqrestore(&catc->tx_lock, flags);
407 }
408
catc_start_xmit(struct sk_buff * skb,struct net_device * netdev)409 static netdev_tx_t catc_start_xmit(struct sk_buff *skb,
410 struct net_device *netdev)
411 {
412 struct catc *catc = netdev_priv(netdev);
413 unsigned long flags;
414 int r = 0;
415 char *tx_buf;
416
417 spin_lock_irqsave(&catc->tx_lock, flags);
418
419 catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
420 tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
421 if (catc->is_f5u011)
422 *(__be16 *)tx_buf = cpu_to_be16(skb->len);
423 else
424 *(__le16 *)tx_buf = cpu_to_le16(skb->len);
425 skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
426 catc->tx_ptr += skb->len + 2;
427
428 if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {
429 r = catc_tx_run(catc);
430 if (r < 0)
431 clear_bit(TX_RUNNING, &catc->flags);
432 }
433
434 if ((catc->is_f5u011 && catc->tx_ptr) ||
435 (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
436 netif_stop_queue(netdev);
437
438 spin_unlock_irqrestore(&catc->tx_lock, flags);
439
440 if (r >= 0) {
441 catc->netdev->stats.tx_bytes += skb->len;
442 catc->netdev->stats.tx_packets++;
443 }
444
445 dev_kfree_skb(skb);
446
447 return NETDEV_TX_OK;
448 }
449
catc_tx_timeout(struct net_device * netdev,unsigned int txqueue)450 static void catc_tx_timeout(struct net_device *netdev, unsigned int txqueue)
451 {
452 struct catc *catc = netdev_priv(netdev);
453
454 dev_warn(&netdev->dev, "Transmit timed out.\n");
455 usb_unlink_urb(catc->tx_urb);
456 }
457
458 /*
459 * Control messages.
460 */
461
catc_ctrl_msg(struct catc * catc,u8 dir,u8 request,u16 value,u16 index,void * buf,int len)462 static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
463 {
464 int retval = usb_control_msg(catc->usbdev,
465 dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),
466 request, 0x40 | dir, value, index, buf, len, 1000);
467 return retval < 0 ? retval : 0;
468 }
469
catc_ctrl_run(struct catc * catc)470 static void catc_ctrl_run(struct catc *catc)
471 {
472 struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;
473 struct usb_device *usbdev = catc->usbdev;
474 struct urb *urb = catc->ctrl_urb;
475 struct usb_ctrlrequest *dr = &catc->ctrl_dr;
476 int status;
477
478 dr->bRequest = q->request;
479 dr->bRequestType = 0x40 | q->dir;
480 dr->wValue = cpu_to_le16(q->value);
481 dr->wIndex = cpu_to_le16(q->index);
482 dr->wLength = cpu_to_le16(q->len);
483
484 urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);
485 urb->transfer_buffer_length = q->len;
486 urb->transfer_buffer = catc->ctrl_buf;
487 urb->setup_packet = (void *) dr;
488 urb->dev = usbdev;
489
490 if (!q->dir && q->buf && q->len)
491 memcpy(catc->ctrl_buf, q->buf, q->len);
492
493 if ((status = usb_submit_urb(catc->ctrl_urb, GFP_ATOMIC)))
494 dev_err(&catc->usbdev->dev, "submit(ctrl_urb) status %d\n",
495 status);
496 }
497
catc_ctrl_done(struct urb * urb)498 static void catc_ctrl_done(struct urb *urb)
499 {
500 struct catc *catc = urb->context;
501 struct ctrl_queue *q;
502 unsigned long flags;
503 int status = urb->status;
504
505 if (status)
506 dev_dbg(&urb->dev->dev, "ctrl_done, status %d, len %d.\n",
507 status, urb->actual_length);
508
509 spin_lock_irqsave(&catc->ctrl_lock, flags);
510
511 q = catc->ctrl_queue + catc->ctrl_tail;
512
513 if (q->dir) {
514 if (q->buf && q->len)
515 memcpy(q->buf, catc->ctrl_buf, q->len);
516 else
517 q->buf = catc->ctrl_buf;
518 }
519
520 if (q->callback)
521 q->callback(catc, q);
522
523 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
524
525 if (catc->ctrl_head != catc->ctrl_tail)
526 catc_ctrl_run(catc);
527 else
528 clear_bit(CTRL_RUNNING, &catc->flags);
529
530 spin_unlock_irqrestore(&catc->ctrl_lock, flags);
531 }
532
catc_ctrl_async(struct catc * catc,u8 dir,u8 request,u16 value,u16 index,void * buf,int len,void (* callback)(struct catc * catc,struct ctrl_queue * q))533 static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,
534 u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))
535 {
536 struct ctrl_queue *q;
537 int retval = 0;
538 unsigned long flags;
539
540 spin_lock_irqsave(&catc->ctrl_lock, flags);
541
542 q = catc->ctrl_queue + catc->ctrl_head;
543
544 q->dir = dir;
545 q->request = request;
546 q->value = value;
547 q->index = index;
548 q->buf = buf;
549 q->len = len;
550 q->callback = callback;
551
552 catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);
553
554 if (catc->ctrl_head == catc->ctrl_tail) {
555 dev_err(&catc->usbdev->dev, "ctrl queue full\n");
556 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
557 retval = -1;
558 }
559
560 if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))
561 catc_ctrl_run(catc);
562
563 spin_unlock_irqrestore(&catc->ctrl_lock, flags);
564
565 return retval;
566 }
567
568 /*
569 * Statistics.
570 */
571
catc_stats_done(struct catc * catc,struct ctrl_queue * q)572 static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)
573 {
574 int index = q->index - EthStats;
575 u16 data, last;
576
577 catc->stats_buf[index] = *((char *)q->buf);
578
579 if (index & 1)
580 return;
581
582 data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];
583 last = catc->stats_vals[index >> 1];
584
585 switch (index) {
586 case TxSingleColl:
587 case TxMultiColl:
588 catc->netdev->stats.collisions += data - last;
589 break;
590 case TxExcessColl:
591 catc->netdev->stats.tx_aborted_errors += data - last;
592 catc->netdev->stats.tx_errors += data - last;
593 break;
594 case RxFramErr:
595 catc->netdev->stats.rx_frame_errors += data - last;
596 catc->netdev->stats.rx_errors += data - last;
597 break;
598 }
599
600 catc->stats_vals[index >> 1] = data;
601 }
602
catc_stats_timer(struct timer_list * t)603 static void catc_stats_timer(struct timer_list *t)
604 {
605 struct catc *catc = from_timer(catc, t, timer);
606 int i;
607
608 for (i = 0; i < 8; i++)
609 catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);
610
611 mod_timer(&catc->timer, jiffies + STATS_UPDATE);
612 }
613
614 /*
615 * Receive modes. Broadcast, Multicast, Promisc.
616 */
617
catc_multicast(const unsigned char * addr,u8 * multicast)618 static void catc_multicast(const unsigned char *addr, u8 *multicast)
619 {
620 u32 crc;
621
622 crc = ether_crc_le(6, addr);
623 multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
624 }
625
catc_set_multicast_list(struct net_device * netdev)626 static void catc_set_multicast_list(struct net_device *netdev)
627 {
628 struct catc *catc = netdev_priv(netdev);
629 struct netdev_hw_addr *ha;
630 u8 broadcast[ETH_ALEN];
631 u8 rx = RxEnable | RxPolarity | RxMultiCast;
632
633 eth_broadcast_addr(broadcast);
634 memset(catc->multicast, 0, 64);
635
636 catc_multicast(broadcast, catc->multicast);
637 catc_multicast(netdev->dev_addr, catc->multicast);
638
639 if (netdev->flags & IFF_PROMISC) {
640 memset(catc->multicast, 0xff, 64);
641 rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;
642 }
643
644 if (netdev->flags & IFF_ALLMULTI) {
645 memset(catc->multicast, 0xff, 64);
646 } else {
647 netdev_for_each_mc_addr(ha, netdev) {
648 u32 crc = ether_crc_le(6, ha->addr);
649 if (!catc->is_f5u011) {
650 catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
651 } else {
652 catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);
653 }
654 }
655 }
656 if (!catc->is_f5u011) {
657 catc_set_reg_async(catc, RxUnit, rx);
658 catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);
659 } else {
660 f5u011_mchash_async(catc, catc->multicast);
661 if (catc->rxmode[0] != rx) {
662 catc->rxmode[0] = rx;
663 netdev_dbg(catc->netdev,
664 "Setting RX mode to %2.2X %2.2X\n",
665 catc->rxmode[0], catc->rxmode[1]);
666 f5u011_rxmode_async(catc, catc->rxmode);
667 }
668 }
669 }
670
catc_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)671 static void catc_get_drvinfo(struct net_device *dev,
672 struct ethtool_drvinfo *info)
673 {
674 struct catc *catc = netdev_priv(dev);
675 strscpy(info->driver, driver_name, sizeof(info->driver));
676 strscpy(info->version, DRIVER_VERSION, sizeof(info->version));
677 usb_make_path(catc->usbdev, info->bus_info, sizeof(info->bus_info));
678 }
679
catc_get_link_ksettings(struct net_device * dev,struct ethtool_link_ksettings * cmd)680 static int catc_get_link_ksettings(struct net_device *dev,
681 struct ethtool_link_ksettings *cmd)
682 {
683 struct catc *catc = netdev_priv(dev);
684 if (!catc->is_f5u011)
685 return -EOPNOTSUPP;
686
687 ethtool_link_ksettings_zero_link_mode(cmd, supported);
688 ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);
689 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
690
691 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
692 ethtool_link_ksettings_add_link_mode(cmd, advertising, 10baseT_Half);
693 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
694
695 cmd->base.speed = SPEED_10;
696 cmd->base.duplex = DUPLEX_HALF;
697 cmd->base.port = PORT_TP;
698 cmd->base.phy_address = 0;
699 cmd->base.autoneg = AUTONEG_DISABLE;
700
701 return 0;
702 }
703
704 static const struct ethtool_ops ops = {
705 .get_drvinfo = catc_get_drvinfo,
706 .get_link = ethtool_op_get_link,
707 .get_link_ksettings = catc_get_link_ksettings,
708 };
709
710 /*
711 * Open, close.
712 */
713
catc_open(struct net_device * netdev)714 static int catc_open(struct net_device *netdev)
715 {
716 struct catc *catc = netdev_priv(netdev);
717 int status;
718
719 catc->irq_urb->dev = catc->usbdev;
720 if ((status = usb_submit_urb(catc->irq_urb, GFP_KERNEL)) < 0) {
721 dev_err(&catc->usbdev->dev, "submit(irq_urb) status %d\n",
722 status);
723 return -1;
724 }
725
726 netif_start_queue(netdev);
727
728 if (!catc->is_f5u011)
729 mod_timer(&catc->timer, jiffies + STATS_UPDATE);
730
731 return 0;
732 }
733
catc_stop(struct net_device * netdev)734 static int catc_stop(struct net_device *netdev)
735 {
736 struct catc *catc = netdev_priv(netdev);
737
738 netif_stop_queue(netdev);
739
740 if (!catc->is_f5u011)
741 del_timer_sync(&catc->timer);
742
743 usb_kill_urb(catc->rx_urb);
744 usb_kill_urb(catc->tx_urb);
745 usb_kill_urb(catc->irq_urb);
746 usb_kill_urb(catc->ctrl_urb);
747
748 return 0;
749 }
750
751 static const struct net_device_ops catc_netdev_ops = {
752 .ndo_open = catc_open,
753 .ndo_stop = catc_stop,
754 .ndo_start_xmit = catc_start_xmit,
755
756 .ndo_tx_timeout = catc_tx_timeout,
757 .ndo_set_rx_mode = catc_set_multicast_list,
758 .ndo_set_mac_address = eth_mac_addr,
759 .ndo_validate_addr = eth_validate_addr,
760 };
761
762 /*
763 * USB probe, disconnect.
764 */
765
catc_probe(struct usb_interface * intf,const struct usb_device_id * id)766 static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)
767 {
768 struct device *dev = &intf->dev;
769 struct usb_device *usbdev = interface_to_usbdev(intf);
770 struct net_device *netdev;
771 struct catc *catc;
772 u8 broadcast[ETH_ALEN];
773 u8 *macbuf;
774 int pktsz, ret = -ENOMEM;
775
776 macbuf = kmalloc(ETH_ALEN, GFP_KERNEL);
777 if (!macbuf)
778 goto error;
779
780 if (usb_set_interface(usbdev,
781 intf->altsetting->desc.bInterfaceNumber, 1)) {
782 dev_err(dev, "Can't set altsetting 1.\n");
783 ret = -EIO;
784 goto fail_mem;
785 }
786
787 netdev = alloc_etherdev(sizeof(struct catc));
788 if (!netdev)
789 goto fail_mem;
790
791 catc = netdev_priv(netdev);
792
793 netdev->netdev_ops = &catc_netdev_ops;
794 netdev->watchdog_timeo = TX_TIMEOUT;
795 netdev->ethtool_ops = &ops;
796
797 catc->usbdev = usbdev;
798 catc->netdev = netdev;
799
800 spin_lock_init(&catc->tx_lock);
801 spin_lock_init(&catc->ctrl_lock);
802
803 timer_setup(&catc->timer, catc_stats_timer, 0);
804
805 catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
806 catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
807 catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
808 catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
809 if ((!catc->ctrl_urb) || (!catc->tx_urb) ||
810 (!catc->rx_urb) || (!catc->irq_urb)) {
811 dev_err(&intf->dev, "No free urbs available.\n");
812 ret = -ENOMEM;
813 goto fail_free;
814 }
815
816 /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
817 if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 &&
818 le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
819 le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
820 dev_dbg(dev, "Testing for f5u011\n");
821 catc->is_f5u011 = 1;
822 atomic_set(&catc->recq_sz, 0);
823 pktsz = RX_PKT_SZ;
824 } else {
825 pktsz = RX_MAX_BURST * (PKT_SZ + 2);
826 }
827
828 usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
829 NULL, NULL, 0, catc_ctrl_done, catc);
830
831 usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
832 NULL, 0, catc_tx_done, catc);
833
834 usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
835 catc->rx_buf, pktsz, catc_rx_done, catc);
836
837 usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
838 catc->irq_buf, 2, catc_irq_done, catc, 1);
839
840 if (!catc->is_f5u011) {
841 u32 *buf;
842 int i;
843
844 dev_dbg(dev, "Checking memory size\n");
845
846 buf = kmalloc(4, GFP_KERNEL);
847 if (!buf) {
848 ret = -ENOMEM;
849 goto fail_free;
850 }
851
852 *buf = 0x12345678;
853 catc_write_mem(catc, 0x7a80, buf, 4);
854 *buf = 0x87654321;
855 catc_write_mem(catc, 0xfa80, buf, 4);
856 catc_read_mem(catc, 0x7a80, buf, 4);
857
858 switch (*buf) {
859 case 0x12345678:
860 catc_set_reg(catc, TxBufCount, 8);
861 catc_set_reg(catc, RxBufCount, 32);
862 dev_dbg(dev, "64k Memory\n");
863 break;
864 default:
865 dev_warn(&intf->dev,
866 "Couldn't detect memory size, assuming 32k\n");
867 fallthrough;
868 case 0x87654321:
869 catc_set_reg(catc, TxBufCount, 4);
870 catc_set_reg(catc, RxBufCount, 16);
871 dev_dbg(dev, "32k Memory\n");
872 break;
873 }
874
875 kfree(buf);
876
877 dev_dbg(dev, "Getting MAC from SEEROM.\n");
878
879 catc_get_mac(catc, macbuf);
880 eth_hw_addr_set(netdev, macbuf);
881
882 dev_dbg(dev, "Setting MAC into registers.\n");
883
884 for (i = 0; i < 6; i++)
885 catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
886
887 dev_dbg(dev, "Filling the multicast list.\n");
888
889 eth_broadcast_addr(broadcast);
890 catc_multicast(broadcast, catc->multicast);
891 catc_multicast(netdev->dev_addr, catc->multicast);
892 catc_write_mem(catc, 0xfa80, catc->multicast, 64);
893
894 dev_dbg(dev, "Clearing error counters.\n");
895
896 for (i = 0; i < 8; i++)
897 catc_set_reg(catc, EthStats + i, 0);
898 catc->last_stats = jiffies;
899
900 dev_dbg(dev, "Enabling.\n");
901
902 catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
903 catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
904 catc_set_reg(catc, LEDCtrl, LEDLink);
905 catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
906 } else {
907 dev_dbg(dev, "Performing reset\n");
908 catc_reset(catc);
909 catc_get_mac(catc, macbuf);
910 eth_hw_addr_set(netdev, macbuf);
911
912 dev_dbg(dev, "Setting RX Mode\n");
913 catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
914 catc->rxmode[1] = 0;
915 f5u011_rxmode(catc, catc->rxmode);
916 }
917 dev_dbg(dev, "Init done.\n");
918 printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n",
919 netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
920 usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr);
921 usb_set_intfdata(intf, catc);
922
923 SET_NETDEV_DEV(netdev, &intf->dev);
924 ret = register_netdev(netdev);
925 if (ret)
926 goto fail_clear_intfdata;
927
928 kfree(macbuf);
929 return 0;
930
931 fail_clear_intfdata:
932 usb_set_intfdata(intf, NULL);
933 fail_free:
934 usb_free_urb(catc->ctrl_urb);
935 usb_free_urb(catc->tx_urb);
936 usb_free_urb(catc->rx_urb);
937 usb_free_urb(catc->irq_urb);
938 free_netdev(netdev);
939 fail_mem:
940 kfree(macbuf);
941 error:
942 return ret;
943 }
944
catc_disconnect(struct usb_interface * intf)945 static void catc_disconnect(struct usb_interface *intf)
946 {
947 struct catc *catc = usb_get_intfdata(intf);
948
949 usb_set_intfdata(intf, NULL);
950 if (catc) {
951 unregister_netdev(catc->netdev);
952 usb_free_urb(catc->ctrl_urb);
953 usb_free_urb(catc->tx_urb);
954 usb_free_urb(catc->rx_urb);
955 usb_free_urb(catc->irq_urb);
956 free_netdev(catc->netdev);
957 }
958 }
959
960 /*
961 * Module functions and tables.
962 */
963
964 static const struct usb_device_id catc_id_table[] = {
965 { USB_DEVICE(0x0423, 0xa) }, /* CATC Netmate, Belkin F5U011 */
966 { USB_DEVICE(0x0423, 0xc) }, /* CATC Netmate II, Belkin F5U111 */
967 { USB_DEVICE(0x08d1, 0x1) }, /* smartBridges smartNIC */
968 { }
969 };
970
971 MODULE_DEVICE_TABLE(usb, catc_id_table);
972
973 static struct usb_driver catc_driver = {
974 .name = driver_name,
975 .probe = catc_probe,
976 .disconnect = catc_disconnect,
977 .id_table = catc_id_table,
978 .disable_hub_initiated_lpm = 1,
979 };
980
981 module_usb_driver(catc_driver);
982