Merge branch 'x86-kdump-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-microblaze.git] / drivers / net / usb / catc.c
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
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
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 = 0, 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
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
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
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
450 static void catc_tx_timeout(struct net_device *netdev)
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
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
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
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
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
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
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
618 static void catc_multicast(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
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
671 static void catc_get_drvinfo(struct net_device *dev,
672                              struct ethtool_drvinfo *info)
673 {
674         struct catc *catc = netdev_priv(dev);
675         strlcpy(info->driver, driver_name, sizeof(info->driver));
676         strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
677         usb_make_path(catc->usbdev, info->bus_info, sizeof(info->bus_info));
678 }
679
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
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
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
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         int pktsz, ret;
774
775         if (usb_set_interface(usbdev,
776                         intf->altsetting->desc.bInterfaceNumber, 1)) {
777                 dev_err(dev, "Can't set altsetting 1.\n");
778                 return -EIO;
779         }
780
781         netdev = alloc_etherdev(sizeof(struct catc));
782         if (!netdev)
783                 return -ENOMEM;
784
785         catc = netdev_priv(netdev);
786
787         netdev->netdev_ops = &catc_netdev_ops;
788         netdev->watchdog_timeo = TX_TIMEOUT;
789         netdev->ethtool_ops = &ops;
790
791         catc->usbdev = usbdev;
792         catc->netdev = netdev;
793
794         spin_lock_init(&catc->tx_lock);
795         spin_lock_init(&catc->ctrl_lock);
796
797         timer_setup(&catc->timer, catc_stats_timer, 0);
798
799         catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
800         catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
801         catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
802         catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
803         if ((!catc->ctrl_urb) || (!catc->tx_urb) || 
804             (!catc->rx_urb) || (!catc->irq_urb)) {
805                 dev_err(&intf->dev, "No free urbs available.\n");
806                 ret = -ENOMEM;
807                 goto fail_free;
808         }
809
810         /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
811         if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 && 
812             le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
813             le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
814                 dev_dbg(dev, "Testing for f5u011\n");
815                 catc->is_f5u011 = 1;            
816                 atomic_set(&catc->recq_sz, 0);
817                 pktsz = RX_PKT_SZ;
818         } else {
819                 pktsz = RX_MAX_BURST * (PKT_SZ + 2);
820         }
821         
822         usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
823                 NULL, NULL, 0, catc_ctrl_done, catc);
824
825         usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
826                 NULL, 0, catc_tx_done, catc);
827
828         usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
829                 catc->rx_buf, pktsz, catc_rx_done, catc);
830
831         usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
832                 catc->irq_buf, 2, catc_irq_done, catc, 1);
833
834         if (!catc->is_f5u011) {
835                 u32 *buf;
836                 int i;
837
838                 dev_dbg(dev, "Checking memory size\n");
839
840                 buf = kmalloc(4, GFP_KERNEL);
841                 if (!buf) {
842                         ret = -ENOMEM;
843                         goto fail_free;
844                 }
845
846                 *buf = 0x12345678;
847                 catc_write_mem(catc, 0x7a80, buf, 4);
848                 *buf = 0x87654321;
849                 catc_write_mem(catc, 0xfa80, buf, 4);
850                 catc_read_mem(catc, 0x7a80, buf, 4);
851           
852                 switch (*buf) {
853                 case 0x12345678:
854                         catc_set_reg(catc, TxBufCount, 8);
855                         catc_set_reg(catc, RxBufCount, 32);
856                         dev_dbg(dev, "64k Memory\n");
857                         break;
858                 default:
859                         dev_warn(&intf->dev,
860                                  "Couldn't detect memory size, assuming 32k\n");
861                         /* fall through */
862                 case 0x87654321:
863                         catc_set_reg(catc, TxBufCount, 4);
864                         catc_set_reg(catc, RxBufCount, 16);
865                         dev_dbg(dev, "32k Memory\n");
866                         break;
867                 }
868
869                 kfree(buf);
870           
871                 dev_dbg(dev, "Getting MAC from SEEROM.\n");
872           
873                 catc_get_mac(catc, netdev->dev_addr);
874                 
875                 dev_dbg(dev, "Setting MAC into registers.\n");
876           
877                 for (i = 0; i < 6; i++)
878                         catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
879                 
880                 dev_dbg(dev, "Filling the multicast list.\n");
881           
882                 eth_broadcast_addr(broadcast);
883                 catc_multicast(broadcast, catc->multicast);
884                 catc_multicast(netdev->dev_addr, catc->multicast);
885                 catc_write_mem(catc, 0xfa80, catc->multicast, 64);
886                 
887                 dev_dbg(dev, "Clearing error counters.\n");
888                 
889                 for (i = 0; i < 8; i++)
890                         catc_set_reg(catc, EthStats + i, 0);
891                 catc->last_stats = jiffies;
892                 
893                 dev_dbg(dev, "Enabling.\n");
894                 
895                 catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
896                 catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
897                 catc_set_reg(catc, LEDCtrl, LEDLink);
898                 catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
899         } else {
900                 dev_dbg(dev, "Performing reset\n");
901                 catc_reset(catc);
902                 catc_get_mac(catc, netdev->dev_addr);
903                 
904                 dev_dbg(dev, "Setting RX Mode\n");
905                 catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
906                 catc->rxmode[1] = 0;
907                 f5u011_rxmode(catc, catc->rxmode);
908         }
909         dev_dbg(dev, "Init done.\n");
910         printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n",
911                netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
912                usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr);
913         usb_set_intfdata(intf, catc);
914
915         SET_NETDEV_DEV(netdev, &intf->dev);
916         ret = register_netdev(netdev);
917         if (ret)
918                 goto fail_clear_intfdata;
919
920         return 0;
921
922 fail_clear_intfdata:
923         usb_set_intfdata(intf, NULL);
924 fail_free:
925         usb_free_urb(catc->ctrl_urb);
926         usb_free_urb(catc->tx_urb);
927         usb_free_urb(catc->rx_urb);
928         usb_free_urb(catc->irq_urb);
929         free_netdev(netdev);
930         return ret;
931 }
932
933 static void catc_disconnect(struct usb_interface *intf)
934 {
935         struct catc *catc = usb_get_intfdata(intf);
936
937         usb_set_intfdata(intf, NULL);
938         if (catc) {
939                 unregister_netdev(catc->netdev);
940                 usb_free_urb(catc->ctrl_urb);
941                 usb_free_urb(catc->tx_urb);
942                 usb_free_urb(catc->rx_urb);
943                 usb_free_urb(catc->irq_urb);
944                 free_netdev(catc->netdev);
945         }
946 }
947
948 /*
949  * Module functions and tables.
950  */
951
952 static const struct usb_device_id catc_id_table[] = {
953         { USB_DEVICE(0x0423, 0xa) },    /* CATC Netmate, Belkin F5U011 */
954         { USB_DEVICE(0x0423, 0xc) },    /* CATC Netmate II, Belkin F5U111 */
955         { USB_DEVICE(0x08d1, 0x1) },    /* smartBridges smartNIC */
956         { }
957 };
958
959 MODULE_DEVICE_TABLE(usb, catc_id_table);
960
961 static struct usb_driver catc_driver = {
962         .name =         driver_name,
963         .probe =        catc_probe,
964         .disconnect =   catc_disconnect,
965         .id_table =     catc_id_table,
966         .disable_hub_initiated_lpm = 1,
967 };
968
969 module_usb_driver(catc_driver);