pasemi_mac: don't enable rx before there are buffers on the ring
[linux-2.6] / drivers / net / usb / catc.c
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);