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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 <[email protected]> 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 <[email protected]>, 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#define DRIVER_AUTHOR "Vojtech Pavlik <[email protected]>"
41#define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver"
42
43MODULE_AUTHOR(DRIVER_AUTHOR);
44MODULE_DESCRIPTION(DRIVER_DESC);
45MODULE_LICENSE("GPL");
46
47static const char driver_name[] = "catc";
48
49/*
50 * Some defines.
51 */
52
53#define STATS_UPDATE (HZ) /* Time between stats updates */
54#define TX_TIMEOUT (5*HZ) /* Max time the queue can be stopped */
55#define PKT_SZ 1536 /* Max Ethernet packet size */
56#define RX_MAX_BURST 15 /* Max packets per rx buffer (> 0, < 16) */
57#define TX_MAX_BURST 15 /* Max full sized packets per tx buffer (> 0) */
58#define CTRL_QUEUE 16 /* Max control requests in flight (power of two) */
59#define RX_PKT_SZ 1600 /* Max size of receive packet for F5U011 */
60
61/*
62 * USB endpoints.
63 */
64
65enum catc_usb_ep {
66 CATC_USB_EP_CONTROL = 0,
67 CATC_USB_EP_BULK = 1,
68 CATC_USB_EP_INT_IN = 2,
69};
70
71/*
72 * Control requests.
73 */
74
75enum control_requests {
76 ReadMem = 0xf1,
77 GetMac = 0xf2,
78 Reset = 0xf4,
79 SetMac = 0xf5,
80 SetRxMode = 0xf5, /* F5U011 only */
81 WriteROM = 0xf8,
82 SetReg = 0xfa,
83 GetReg = 0xfb,
84 WriteMem = 0xfc,
85 ReadROM = 0xfd,
86};
87
88/*
89 * Registers.
90 */
91
92enum register_offsets {
93 TxBufCount = 0x20,
94 RxBufCount = 0x21,
95 OpModes = 0x22,
96 TxQed = 0x23,
97 RxQed = 0x24,
98 MaxBurst = 0x25,
99 RxUnit = 0x60,
100 EthStatus = 0x61,
101 StationAddr0 = 0x67,
102 EthStats = 0x69,
103 LEDCtrl = 0x81,
104};
105
106enum eth_stats {
107 TxSingleColl = 0x00,
108 TxMultiColl = 0x02,
109 TxExcessColl = 0x04,
110 RxFramErr = 0x06,
111};
112
113enum op_mode_bits {
114 Op3MemWaits = 0x03,
115 OpLenInclude = 0x08,
116 OpRxMerge = 0x10,
117 OpTxMerge = 0x20,
118 OpWin95bugfix = 0x40,
119 OpLoopback = 0x80,
120};
121
122enum rx_filter_bits {
123 RxEnable = 0x01,
124 RxPolarity = 0x02,
125 RxForceOK = 0x04,
126 RxMultiCast = 0x08,
127 RxPromisc = 0x10,
128 AltRxPromisc = 0x20, /* F5U011 uses different bit */
129};
130
131enum led_values {
132 LEDFast = 0x01,
133 LEDSlow = 0x02,
134 LEDFlash = 0x03,
135 LEDPulse = 0x04,
136 LEDLink = 0x08,
137};
138
139enum link_status {
140 LinkNoChange = 0,
141 LinkGood = 1,
142 LinkBad = 2
143};
144
145/*
146 * The catc struct.
147 */
148
149#define CTRL_RUNNING 0
150#define RX_RUNNING 1
151#define TX_RUNNING 2
152
153struct catc {
154 struct net_device *netdev;
155 struct usb_device *usbdev;
156
157 unsigned long flags;
158
159 unsigned int tx_ptr, tx_idx;
160 unsigned int ctrl_head, ctrl_tail;
161 spinlock_t tx_lock, ctrl_lock;
162
163 u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)];
164 u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)];
165 u8 irq_buf[2];
166 u8 ctrl_buf[64];
167 struct usb_ctrlrequest ctrl_dr;
168
169 struct timer_list timer;
170 u8 stats_buf[8];
171 u16 stats_vals[4];
172 unsigned long last_stats;
173
174 u8 multicast[64];
175
176 struct ctrl_queue {
177 u8 dir;
178 u8 request;
179 u16 value;
180 u16 index;
181 void *buf;
182 int len;
183 void (*callback)(struct catc *catc, struct ctrl_queue *q);
184 } ctrl_queue[CTRL_QUEUE];
185
186 struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb;
187
188 u8 is_f5u011; /* Set if device is an F5U011 */
189 u8 rxmode[2]; /* Used for F5U011 */
190 atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */
191};
192
193/*
194 * Useful macros.
195 */
196
197#define catc_get_mac(catc, mac) catc_ctrl_msg(catc, USB_DIR_IN, GetMac, 0, 0, mac, 6)
198#define catc_reset(catc) catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0)
199#define catc_set_reg(catc, reg, val) catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0)
200#define catc_get_reg(catc, reg, buf) catc_ctrl_msg(catc, USB_DIR_IN, GetReg, 0, reg, buf, 1)
201#define catc_write_mem(catc, addr, buf, size) catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size)
202#define catc_read_mem(catc, addr, buf, size) catc_ctrl_msg(catc, USB_DIR_IN, ReadMem, 0, addr, buf, size)
203
204#define f5u011_rxmode(catc, rxmode) catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2)
205#define f5u011_rxmode_async(catc, rxmode) catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL)
206#define f5u011_mchash_async(catc, hash) catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL)
207
208#define catc_set_reg_async(catc, reg, val) catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL)
209#define catc_get_reg_async(catc, reg, cb) catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb)
210#define catc_write_mem_async(catc, addr, buf, size) catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL)
211
212/*
213 * Receive routines.
214 */
215
216static void catc_rx_done(struct urb *urb)
217{
218 struct catc *catc = urb->context;
219 u8 *pkt_start = urb->transfer_buffer;
220 struct sk_buff *skb;
221 int pkt_len, pkt_offset = 0;
222 int status = urb->status;
223
224 if (!catc->is_f5u011) {
225 clear_bit(RX_RUNNING, &catc->flags);
226 pkt_offset = 2;
227 }
228
229 if (status) {
230 dev_dbg(&urb->dev->dev, "rx_done, status %d, length %d\n",
231 status, urb->actual_length);
232 return;
233 }
234
235 do {
236 int remaining = urb->actual_length -
237 (pkt_start - (u8 *)urb->transfer_buffer);
238
239 if (!catc->is_f5u011) {
240 if (remaining < pkt_offset) {
241 catc->netdev->stats.rx_length_errors++;
242 catc->netdev->stats.rx_errors++;
243 break;
244 }
245 pkt_len = le16_to_cpup((__le16 *)pkt_start);
246 } else {
247 pkt_len = urb->actual_length;
248 }
249
250 if (pkt_len < ETH_HLEN || pkt_len + pkt_offset > remaining) {
251 catc->netdev->stats.rx_length_errors++;
252 catc->netdev->stats.rx_errors++;
253 break;
254 }
255
256 if (!(skb = dev_alloc_skb(pkt_len)))
257 return;
258
259 skb_copy_to_linear_data(skb, pkt_start + pkt_offset, pkt_len);
260 skb_put(skb, pkt_len);
261
262 skb->protocol = eth_type_trans(skb, catc->netdev);
263 netif_rx(skb);
264
265 catc->netdev->stats.rx_packets++;
266 catc->netdev->stats.rx_bytes += pkt_len;
267
268 /* F5U011 only does one packet per RX */
269 if (catc->is_f5u011)
270 break;
271 pkt_start += (((pkt_len + 1) >> 6) + 1) << 6;
272
273 } while (pkt_start - (u8 *) urb->transfer_buffer < urb->actual_length);
274
275 if (catc->is_f5u011) {
276 if (atomic_read(&catc->recq_sz)) {
277 int state;
278 atomic_dec(&catc->recq_sz);
279 netdev_dbg(catc->netdev, "getting extra packet\n");
280 urb->dev = catc->usbdev;
281 if ((state = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
282 netdev_dbg(catc->netdev,
283 "submit(rx_urb) status %d\n", state);
284 }
285 } else {
286 clear_bit(RX_RUNNING, &catc->flags);
287 }
288 }
289}
290
291static void catc_irq_done(struct urb *urb)
292{
293 struct catc *catc = urb->context;
294 u8 *data = urb->transfer_buffer;
295 int status = urb->status;
296 unsigned int hasdata, linksts = LinkNoChange;
297 int res;
298
299 if (!catc->is_f5u011) {
300 hasdata = data[1] & 0x80;
301 if (data[1] & 0x40)
302 linksts = LinkGood;
303 else if (data[1] & 0x20)
304 linksts = LinkBad;
305 } else {
306 hasdata = (unsigned int)(be16_to_cpup((__be16*)data) & 0x0fff);
307 if (data[0] == 0x90)
308 linksts = LinkGood;
309 else if (data[0] == 0xA0)
310 linksts = LinkBad;
311 }
312
313 switch (status) {
314 case 0: /* success */
315 break;
316 case -ECONNRESET: /* unlink */
317 case -ENOENT:
318 case -ESHUTDOWN:
319 return;
320 /* -EPIPE: should clear the halt */
321 default: /* error */
322 dev_dbg(&urb->dev->dev,
323 "irq_done, status %d, data %02x %02x.\n",
324 status, data[0], data[1]);
325 goto resubmit;
326 }
327
328 if (linksts == LinkGood) {
329 netif_carrier_on(catc->netdev);
330 netdev_dbg(catc->netdev, "link ok\n");
331 }
332
333 if (linksts == LinkBad) {
334 netif_carrier_off(catc->netdev);
335 netdev_dbg(catc->netdev, "link bad\n");
336 }
337
338 if (hasdata) {
339 if (test_and_set_bit(RX_RUNNING, &catc->flags)) {
340 if (catc->is_f5u011)
341 atomic_inc(&catc->recq_sz);
342 } else {
343 catc->rx_urb->dev = catc->usbdev;
344 if ((res = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {
345 dev_err(&catc->usbdev->dev,
346 "submit(rx_urb) status %d\n", res);
347 }
348 }
349 }
350resubmit:
351 res = usb_submit_urb (urb, GFP_ATOMIC);
352 if (res)
353 dev_err(&catc->usbdev->dev,
354 "can't resubmit intr, %s-%s, status %d\n",
355 catc->usbdev->bus->bus_name,
356 catc->usbdev->devpath, res);
357}
358
359/*
360 * Transmit routines.
361 */
362
363static int catc_tx_run(struct catc *catc)
364{
365 int status;
366
367 if (catc->is_f5u011)
368 catc->tx_ptr = (catc->tx_ptr + 63) & ~63;
369
370 catc->tx_urb->transfer_buffer_length = catc->tx_ptr;
371 catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx];
372 catc->tx_urb->dev = catc->usbdev;
373
374 if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0)
375 dev_err(&catc->usbdev->dev, "submit(tx_urb), status %d\n",
376 status);
377
378 catc->tx_idx = !catc->tx_idx;
379 catc->tx_ptr = 0;
380
381 netif_trans_update(catc->netdev);
382 return status;
383}
384
385static void catc_tx_done(struct urb *urb)
386{
387 struct catc *catc = urb->context;
388 unsigned long flags;
389 int r, status = urb->status;
390
391 if (status == -ECONNRESET) {
392 dev_dbg(&urb->dev->dev, "Tx Reset.\n");
393 urb->status = 0;
394 netif_trans_update(catc->netdev);
395 catc->netdev->stats.tx_errors++;
396 clear_bit(TX_RUNNING, &catc->flags);
397 netif_wake_queue(catc->netdev);
398 return;
399 }
400
401 if (status) {
402 dev_dbg(&urb->dev->dev, "tx_done, status %d, length %d\n",
403 status, urb->actual_length);
404 return;
405 }
406
407 spin_lock_irqsave(&catc->tx_lock, flags);
408
409 if (catc->tx_ptr) {
410 r = catc_tx_run(catc);
411 if (unlikely(r < 0))
412 clear_bit(TX_RUNNING, &catc->flags);
413 } else {
414 clear_bit(TX_RUNNING, &catc->flags);
415 }
416
417 netif_wake_queue(catc->netdev);
418
419 spin_unlock_irqrestore(&catc->tx_lock, flags);
420}
421
422static netdev_tx_t catc_start_xmit(struct sk_buff *skb,
423 struct net_device *netdev)
424{
425 struct catc *catc = netdev_priv(netdev);
426 unsigned long flags;
427 int r = 0;
428 char *tx_buf;
429
430 spin_lock_irqsave(&catc->tx_lock, flags);
431
432 catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
433 tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
434 if (catc->is_f5u011)
435 *(__be16 *)tx_buf = cpu_to_be16(skb->len);
436 else
437 *(__le16 *)tx_buf = cpu_to_le16(skb->len);
438 skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
439 catc->tx_ptr += skb->len + 2;
440
441 if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {
442 r = catc_tx_run(catc);
443 if (r < 0)
444 clear_bit(TX_RUNNING, &catc->flags);
445 }
446
447 if ((catc->is_f5u011 && catc->tx_ptr) ||
448 (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
449 netif_stop_queue(netdev);
450
451 spin_unlock_irqrestore(&catc->tx_lock, flags);
452
453 if (r >= 0) {
454 catc->netdev->stats.tx_bytes += skb->len;
455 catc->netdev->stats.tx_packets++;
456 }
457
458 dev_kfree_skb(skb);
459
460 return NETDEV_TX_OK;
461}
462
463static void catc_tx_timeout(struct net_device *netdev, unsigned int txqueue)
464{
465 struct catc *catc = netdev_priv(netdev);
466
467 dev_warn(&netdev->dev, "Transmit timed out.\n");
468 usb_unlink_urb(catc->tx_urb);
469}
470
471/*
472 * Control messages.
473 */
474
475static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
476{
477 int retval = usb_control_msg(catc->usbdev,
478 dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),
479 request, 0x40 | dir, value, index, buf, len, 1000);
480 return retval < 0 ? retval : 0;
481}
482
483static void catc_ctrl_run(struct catc *catc)
484{
485 struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;
486 struct usb_device *usbdev = catc->usbdev;
487 struct urb *urb = catc->ctrl_urb;
488 struct usb_ctrlrequest *dr = &catc->ctrl_dr;
489 int status;
490
491 dr->bRequest = q->request;
492 dr->bRequestType = 0x40 | q->dir;
493 dr->wValue = cpu_to_le16(q->value);
494 dr->wIndex = cpu_to_le16(q->index);
495 dr->wLength = cpu_to_le16(q->len);
496
497 urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);
498 urb->transfer_buffer_length = q->len;
499 urb->transfer_buffer = catc->ctrl_buf;
500 urb->setup_packet = (void *) dr;
501 urb->dev = usbdev;
502
503 if (!q->dir && q->buf && q->len)
504 memcpy(catc->ctrl_buf, q->buf, q->len);
505
506 if ((status = usb_submit_urb(catc->ctrl_urb, GFP_ATOMIC)))
507 dev_err(&catc->usbdev->dev, "submit(ctrl_urb) status %d\n",
508 status);
509}
510
511static void catc_ctrl_done(struct urb *urb)
512{
513 struct catc *catc = urb->context;
514 struct ctrl_queue *q;
515 unsigned long flags;
516 int status = urb->status;
517
518 if (status)
519 dev_dbg(&urb->dev->dev, "ctrl_done, status %d, len %d.\n",
520 status, urb->actual_length);
521
522 spin_lock_irqsave(&catc->ctrl_lock, flags);
523
524 q = catc->ctrl_queue + catc->ctrl_tail;
525
526 if (q->dir) {
527 if (q->buf && q->len)
528 memcpy(q->buf, catc->ctrl_buf, q->len);
529 else
530 q->buf = catc->ctrl_buf;
531 }
532
533 if (q->callback)
534 q->callback(catc, q);
535
536 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
537
538 if (catc->ctrl_head != catc->ctrl_tail)
539 catc_ctrl_run(catc);
540 else
541 clear_bit(CTRL_RUNNING, &catc->flags);
542
543 spin_unlock_irqrestore(&catc->ctrl_lock, flags);
544}
545
546static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,
547 u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))
548{
549 struct ctrl_queue *q;
550 int retval = 0;
551 unsigned long flags;
552
553 spin_lock_irqsave(&catc->ctrl_lock, flags);
554
555 q = catc->ctrl_queue + catc->ctrl_head;
556
557 q->dir = dir;
558 q->request = request;
559 q->value = value;
560 q->index = index;
561 q->buf = buf;
562 q->len = len;
563 q->callback = callback;
564
565 catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);
566
567 if (catc->ctrl_head == catc->ctrl_tail) {
568 dev_err(&catc->usbdev->dev, "ctrl queue full\n");
569 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
570 retval = -1;
571 }
572
573 if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))
574 catc_ctrl_run(catc);
575
576 spin_unlock_irqrestore(&catc->ctrl_lock, flags);
577
578 return retval;
579}
580
581/*
582 * Statistics.
583 */
584
585static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)
586{
587 int index = q->index - EthStats;
588 u16 data, last;
589
590 catc->stats_buf[index] = *((char *)q->buf);
591
592 if (index & 1)
593 return;
594
595 data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];
596 last = catc->stats_vals[index >> 1];
597
598 switch (index) {
599 case TxSingleColl:
600 case TxMultiColl:
601 catc->netdev->stats.collisions += data - last;
602 break;
603 case TxExcessColl:
604 catc->netdev->stats.tx_aborted_errors += data - last;
605 catc->netdev->stats.tx_errors += data - last;
606 break;
607 case RxFramErr:
608 catc->netdev->stats.rx_frame_errors += data - last;
609 catc->netdev->stats.rx_errors += data - last;
610 break;
611 }
612
613 catc->stats_vals[index >> 1] = data;
614}
615
616static void catc_stats_timer(struct timer_list *t)
617{
618 struct catc *catc = timer_container_of(catc, t, timer);
619 int i;
620
621 for (i = 0; i < 8; i++)
622 catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);
623
624 mod_timer(&catc->timer, jiffies + STATS_UPDATE);
625}
626
627/*
628 * Receive modes. Broadcast, Multicast, Promisc.
629 */
630
631static void catc_multicast(const unsigned char *addr, u8 *multicast)
632{
633 u32 crc;
634
635 crc = ether_crc_le(6, addr);
636 multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
637}
638
639static void catc_set_multicast_list(struct net_device *netdev)
640{
641 struct catc *catc = netdev_priv(netdev);
642 struct netdev_hw_addr *ha;
643 u8 broadcast[ETH_ALEN];
644 u8 rx = RxEnable | RxPolarity | RxMultiCast;
645
646 eth_broadcast_addr(broadcast);
647 memset(catc->multicast, 0, 64);
648
649 catc_multicast(broadcast, catc->multicast);
650 catc_multicast(netdev->dev_addr, catc->multicast);
651
652 if (netdev->flags & IFF_PROMISC) {
653 memset(catc->multicast, 0xff, 64);
654 rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;
655 }
656
657 if (netdev->flags & IFF_ALLMULTI) {
658 memset(catc->multicast, 0xff, 64);
659 } else {
660 netdev_for_each_mc_addr(ha, netdev) {
661 u32 crc = ether_crc_le(6, ha->addr);
662 if (!catc->is_f5u011) {
663 catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
664 } else {
665 catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);
666 }
667 }
668 }
669 if (!catc->is_f5u011) {
670 catc_set_reg_async(catc, RxUnit, rx);
671 catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);
672 } else {
673 f5u011_mchash_async(catc, catc->multicast);
674 if (catc->rxmode[0] != rx) {
675 catc->rxmode[0] = rx;
676 netdev_dbg(catc->netdev,
677 "Setting RX mode to %2.2X %2.2X\n",
678 catc->rxmode[0], catc->rxmode[1]);
679 f5u011_rxmode_async(catc, catc->rxmode);
680 }
681 }
682}
683
684static void catc_get_drvinfo(struct net_device *dev,
685 struct ethtool_drvinfo *info)
686{
687 struct catc *catc = netdev_priv(dev);
688 strscpy(info->driver, driver_name, sizeof(info->driver));
689 usb_make_path(catc->usbdev, info->bus_info, sizeof(info->bus_info));
690}
691
692static int catc_get_link_ksettings(struct net_device *dev,
693 struct ethtool_link_ksettings *cmd)
694{
695 struct catc *catc = netdev_priv(dev);
696 if (!catc->is_f5u011)
697 return -EOPNOTSUPP;
698
699 ethtool_link_ksettings_zero_link_mode(cmd, supported);
700 ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);
701 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
702
703 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
704 ethtool_link_ksettings_add_link_mode(cmd, advertising, 10baseT_Half);
705 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
706
707 cmd->base.speed = SPEED_10;
708 cmd->base.duplex = DUPLEX_HALF;
709 cmd->base.port = PORT_TP;
710 cmd->base.phy_address = 0;
711 cmd->base.autoneg = AUTONEG_DISABLE;
712
713 return 0;
714}
715
716static const struct ethtool_ops ops = {
717 .get_drvinfo = catc_get_drvinfo,
718 .get_link = ethtool_op_get_link,
719 .get_link_ksettings = catc_get_link_ksettings,
720};
721
722/*
723 * Open, close.
724 */
725
726static int catc_open(struct net_device *netdev)
727{
728 struct catc *catc = netdev_priv(netdev);
729 int status;
730
731 catc->irq_urb->dev = catc->usbdev;
732 if ((status = usb_submit_urb(catc->irq_urb, GFP_KERNEL)) < 0) {
733 dev_err(&catc->usbdev->dev, "submit(irq_urb) status %d\n",
734 status);
735 return -1;
736 }
737
738 netif_start_queue(netdev);
739
740 if (!catc->is_f5u011)
741 mod_timer(&catc->timer, jiffies + STATS_UPDATE);
742
743 return 0;
744}
745
746static int catc_stop(struct net_device *netdev)
747{
748 struct catc *catc = netdev_priv(netdev);
749
750 netif_stop_queue(netdev);
751
752 if (!catc->is_f5u011)
753 timer_delete_sync(&catc->timer);
754
755 usb_kill_urb(catc->rx_urb);
756 usb_kill_urb(catc->tx_urb);
757 usb_kill_urb(catc->irq_urb);
758 usb_kill_urb(catc->ctrl_urb);
759
760 return 0;
761}
762
763static const struct net_device_ops catc_netdev_ops = {
764 .ndo_open = catc_open,
765 .ndo_stop = catc_stop,
766 .ndo_start_xmit = catc_start_xmit,
767
768 .ndo_tx_timeout = catc_tx_timeout,
769 .ndo_set_rx_mode = catc_set_multicast_list,
770 .ndo_set_mac_address = eth_mac_addr,
771 .ndo_validate_addr = eth_validate_addr,
772};
773
774/*
775 * USB probe, disconnect.
776 */
777
778static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)
779{
780 struct device *dev = &intf->dev;
781 struct usb_device *usbdev = interface_to_usbdev(intf);
782 struct net_device *netdev;
783 struct catc *catc;
784 u8 broadcast[ETH_ALEN];
785 u8 *macbuf;
786 int pktsz, ret = -ENOMEM;
787 static const u8 bulk_ep_addr[] = {
788 CATC_USB_EP_BULK | USB_DIR_OUT,
789 CATC_USB_EP_BULK | USB_DIR_IN,
790 0};
791 static const u8 int_ep_addr[] = {
792 CATC_USB_EP_INT_IN | USB_DIR_IN,
793 0};
794
795 macbuf = kmalloc(ETH_ALEN, GFP_KERNEL);
796 if (!macbuf)
797 goto error;
798
799 if (usb_set_interface(usbdev,
800 intf->altsetting->desc.bInterfaceNumber, 1)) {
801 dev_err(dev, "Can't set altsetting 1.\n");
802 ret = -EIO;
803 goto fail_mem;
804 }
805
806 /* Verify that all required endpoints are present */
807 if (!usb_check_bulk_endpoints(intf, bulk_ep_addr) ||
808 !usb_check_int_endpoints(intf, int_ep_addr)) {
809 dev_err(dev, "Missing or invalid endpoints\n");
810 ret = -ENODEV;
811 goto fail_mem;
812 }
813
814 netdev = alloc_etherdev(sizeof(struct catc));
815 if (!netdev)
816 goto fail_mem;
817
818 catc = netdev_priv(netdev);
819
820 netdev->netdev_ops = &catc_netdev_ops;
821 netdev->watchdog_timeo = TX_TIMEOUT;
822 netdev->ethtool_ops = &ops;
823
824 catc->usbdev = usbdev;
825 catc->netdev = netdev;
826
827 spin_lock_init(&catc->tx_lock);
828 spin_lock_init(&catc->ctrl_lock);
829
830 timer_setup(&catc->timer, catc_stats_timer, 0);
831
832 catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
833 catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
834 catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
835 catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
836 if ((!catc->ctrl_urb) || (!catc->tx_urb) ||
837 (!catc->rx_urb) || (!catc->irq_urb)) {
838 dev_err(&intf->dev, "No free urbs available.\n");
839 ret = -ENOMEM;
840 goto fail_free;
841 }
842
843 /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
844 if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 &&
845 le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
846 le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
847 dev_dbg(dev, "Testing for f5u011\n");
848 catc->is_f5u011 = 1;
849 atomic_set(&catc->recq_sz, 0);
850 pktsz = RX_PKT_SZ;
851 } else {
852 pktsz = RX_MAX_BURST * (PKT_SZ + 2);
853 }
854
855 usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
856 NULL, NULL, 0, catc_ctrl_done, catc);
857
858 usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, CATC_USB_EP_BULK),
859 NULL, 0, catc_tx_done, catc);
860
861 usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, CATC_USB_EP_BULK),
862 catc->rx_buf, pktsz, catc_rx_done, catc);
863
864 usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, CATC_USB_EP_INT_IN),
865 catc->irq_buf, 2, catc_irq_done, catc, 1);
866
867 if (!catc->is_f5u011) {
868 u32 *buf;
869 int i;
870
871 dev_dbg(dev, "Checking memory size\n");
872
873 buf = kmalloc(4, GFP_KERNEL);
874 if (!buf) {
875 ret = -ENOMEM;
876 goto fail_free;
877 }
878
879 *buf = 0x12345678;
880 catc_write_mem(catc, 0x7a80, buf, 4);
881 *buf = 0x87654321;
882 catc_write_mem(catc, 0xfa80, buf, 4);
883 catc_read_mem(catc, 0x7a80, buf, 4);
884
885 switch (*buf) {
886 case 0x12345678:
887 catc_set_reg(catc, TxBufCount, 8);
888 catc_set_reg(catc, RxBufCount, 32);
889 dev_dbg(dev, "64k Memory\n");
890 break;
891 default:
892 dev_warn(&intf->dev,
893 "Couldn't detect memory size, assuming 32k\n");
894 fallthrough;
895 case 0x87654321:
896 catc_set_reg(catc, TxBufCount, 4);
897 catc_set_reg(catc, RxBufCount, 16);
898 dev_dbg(dev, "32k Memory\n");
899 break;
900 }
901
902 kfree(buf);
903
904 dev_dbg(dev, "Getting MAC from SEEROM.\n");
905
906 catc_get_mac(catc, macbuf);
907 eth_hw_addr_set(netdev, macbuf);
908
909 dev_dbg(dev, "Setting MAC into registers.\n");
910
911 for (i = 0; i < 6; i++)
912 catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
913
914 dev_dbg(dev, "Filling the multicast list.\n");
915
916 eth_broadcast_addr(broadcast);
917 catc_multicast(broadcast, catc->multicast);
918 catc_multicast(netdev->dev_addr, catc->multicast);
919 catc_write_mem(catc, 0xfa80, catc->multicast, 64);
920
921 dev_dbg(dev, "Clearing error counters.\n");
922
923 for (i = 0; i < 8; i++)
924 catc_set_reg(catc, EthStats + i, 0);
925 catc->last_stats = jiffies;
926
927 dev_dbg(dev, "Enabling.\n");
928
929 catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
930 catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
931 catc_set_reg(catc, LEDCtrl, LEDLink);
932 catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
933 } else {
934 dev_dbg(dev, "Performing reset\n");
935 catc_reset(catc);
936 catc_get_mac(catc, macbuf);
937 eth_hw_addr_set(netdev, macbuf);
938
939 dev_dbg(dev, "Setting RX Mode\n");
940 catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
941 catc->rxmode[1] = 0;
942 f5u011_rxmode(catc, catc->rxmode);
943 }
944 dev_dbg(dev, "Init done.\n");
945 printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n",
946 netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
947 usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr);
948 usb_set_intfdata(intf, catc);
949
950 SET_NETDEV_DEV(netdev, &intf->dev);
951 ret = register_netdev(netdev);
952 if (ret)
953 goto fail_clear_intfdata;
954
955 kfree(macbuf);
956 return 0;
957
958fail_clear_intfdata:
959 usb_set_intfdata(intf, NULL);
960fail_free:
961 usb_free_urb(catc->ctrl_urb);
962 usb_free_urb(catc->tx_urb);
963 usb_free_urb(catc->rx_urb);
964 usb_free_urb(catc->irq_urb);
965 free_netdev(netdev);
966fail_mem:
967 kfree(macbuf);
968error:
969 return ret;
970}
971
972static void catc_disconnect(struct usb_interface *intf)
973{
974 struct catc *catc = usb_get_intfdata(intf);
975
976 usb_set_intfdata(intf, NULL);
977 if (catc) {
978 unregister_netdev(catc->netdev);
979 usb_free_urb(catc->ctrl_urb);
980 usb_free_urb(catc->tx_urb);
981 usb_free_urb(catc->rx_urb);
982 usb_free_urb(catc->irq_urb);
983 free_netdev(catc->netdev);
984 }
985}
986
987/*
988 * Module functions and tables.
989 */
990
991static const struct usb_device_id catc_id_table[] = {
992 { USB_DEVICE(0x0423, 0xa) }, /* CATC Netmate, Belkin F5U011 */
993 { USB_DEVICE(0x0423, 0xc) }, /* CATC Netmate II, Belkin F5U111 */
994 { USB_DEVICE(0x08d1, 0x1) }, /* smartBridges smartNIC */
995 { }
996};
997
998MODULE_DEVICE_TABLE(usb, catc_id_table);
999
1000static struct usb_driver catc_driver = {
1001 .name = driver_name,
1002 .probe = catc_probe,
1003 .disconnect = catc_disconnect,
1004 .id_table = catc_id_table,
1005 .disable_hub_initiated_lpm = 1,
1006};
1007
1008module_usb_driver(catc_driver);