Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/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, see <http://www.gnu.org/licenses/>.
 28  * 
 29  * Should you need to contact me, the author, you can do so either by
 30  * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
 31  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
 32  */
 33 
 34 #include <linux/module.h>
 35 #include <linux/kernel.h>
 36 #include <linux/string.h>
 37 #include <linux/netdevice.h>
 38 #include <linux/etherdevice.h>
 39 #include <linux/skbuff.h>
 40 #include <linux/spinlock.h>
 41 #include <linux/ethtool.h>
 42 #include <linux/crc32.h>
 43 #include <linux/bitops.h>
 44 #include <linux/gfp.h>
 45 #include <asm/uaccess.h>
 46 
 47 #undef DEBUG
 48 
 49 #include <linux/usb.h>
 50 
 51 /*
 52  * Version information.
 53  */
 54 
 55 #define DRIVER_VERSION "v2.8"
 56 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>"
 57 #define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver"
 58 #define SHORT_DRIVER_DESC "EL1210A NetMate USB Ethernet"
 59 
 60 MODULE_AUTHOR(DRIVER_AUTHOR);
 61 MODULE_DESCRIPTION(DRIVER_DESC);
 62 MODULE_LICENSE("GPL");
 63 
 64 static const char driver_name[] = "catc";
 65 
 66 /*
 67  * Some defines.
 68  */ 
 69 
 70 #define STATS_UPDATE            (HZ)    /* Time between stats updates */
 71 #define TX_TIMEOUT              (5*HZ)  /* Max time the queue can be stopped */
 72 #define PKT_SZ                  1536    /* Max Ethernet packet size */
 73 #define RX_MAX_BURST            15      /* Max packets per rx buffer (> 0, < 16) */
 74 #define TX_MAX_BURST            15      /* Max full sized packets per tx buffer (> 0) */
 75 #define CTRL_QUEUE              16      /* Max control requests in flight (power of two) */
 76 #define RX_PKT_SZ               1600    /* Max size of receive packet for F5U011 */
 77 
 78 /*
 79  * Control requests.
 80  */
 81 
 82 enum control_requests {
 83         ReadMem =       0xf1,
 84         GetMac =        0xf2,
 85         Reset =         0xf4,
 86         SetMac =        0xf5,
 87         SetRxMode =     0xf5,  /* F5U011 only */
 88         WriteROM =      0xf8,
 89         SetReg =        0xfa,
 90         GetReg =        0xfb,
 91         WriteMem =      0xfc,
 92         ReadROM =       0xfd,
 93 };
 94 
 95 /*
 96  * Registers.
 97  */
 98 
 99 enum register_offsets {
100         TxBufCount =    0x20,
101         RxBufCount =    0x21,
102         OpModes =       0x22,
103         TxQed =         0x23,
104         RxQed =         0x24,
105         MaxBurst =      0x25,
106         RxUnit =        0x60,
107         EthStatus =     0x61,
108         StationAddr0 =  0x67,
109         EthStats =      0x69,
110         LEDCtrl =       0x81,
111 };
112 
113 enum eth_stats {
114         TxSingleColl =  0x00,
115         TxMultiColl =   0x02,
116         TxExcessColl =  0x04,
117         RxFramErr =     0x06,
118 };
119 
120 enum op_mode_bits {
121         Op3MemWaits =   0x03,
122         OpLenInclude =  0x08,
123         OpRxMerge =     0x10,
124         OpTxMerge =     0x20,
125         OpWin95bugfix = 0x40,
126         OpLoopback =    0x80,
127 };
128 
129 enum rx_filter_bits {
130         RxEnable =      0x01,
131         RxPolarity =    0x02,
132         RxForceOK =     0x04,
133         RxMultiCast =   0x08,
134         RxPromisc =     0x10,
135         AltRxPromisc =  0x20, /* F5U011 uses different bit */
136 };
137 
138 enum led_values {
139         LEDFast =       0x01,
140         LEDSlow =       0x02,
141         LEDFlash =      0x03,
142         LEDPulse =      0x04,
143         LEDLink =       0x08,
144 };
145 
146 enum link_status {
147         LinkNoChange = 0,
148         LinkGood     = 1,
149         LinkBad      = 2
150 };
151 
152 /*
153  * The catc struct.
154  */
155 
156 #define CTRL_RUNNING    0
157 #define RX_RUNNING      1
158 #define TX_RUNNING      2
159 
160 struct catc {
161         struct net_device *netdev;
162         struct usb_device *usbdev;
163 
164         unsigned long flags;
165 
166         unsigned int tx_ptr, tx_idx;
167         unsigned int ctrl_head, ctrl_tail;
168         spinlock_t tx_lock, ctrl_lock;
169 
170         u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)];
171         u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)];
172         u8 irq_buf[2];
173         u8 ctrl_buf[64];
174         struct usb_ctrlrequest ctrl_dr;
175 
176         struct timer_list timer;
177         u8 stats_buf[8];
178         u16 stats_vals[4];
179         unsigned long last_stats;
180 
181         u8 multicast[64];
182 
183         struct ctrl_queue {
184                 u8 dir;
185                 u8 request;
186                 u16 value;
187                 u16 index;
188                 void *buf;
189                 int len;
190                 void (*callback)(struct catc *catc, struct ctrl_queue *q);
191         } ctrl_queue[CTRL_QUEUE];
192 
193         struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb;
194 
195         u8 is_f5u011;   /* Set if device is an F5U011 */
196         u8 rxmode[2];   /* Used for F5U011 */
197         atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */
198 };
199 
200 /*
201  * Useful macros.
202  */
203 
204 #define catc_get_mac(catc, mac)                         catc_ctrl_msg(catc, USB_DIR_IN,  GetMac, 0, 0, mac,  6)
205 #define catc_reset(catc)                                catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0)
206 #define catc_set_reg(catc, reg, val)                    catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0)
207 #define catc_get_reg(catc, reg, buf)                    catc_ctrl_msg(catc, USB_DIR_IN,  GetReg, 0, reg, buf, 1)
208 #define catc_write_mem(catc, addr, buf, size)           catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size)
209 #define catc_read_mem(catc, addr, buf, size)            catc_ctrl_msg(catc, USB_DIR_IN,  ReadMem, 0, addr, buf, size)
210 
211 #define f5u011_rxmode(catc, rxmode)                     catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2)
212 #define f5u011_rxmode_async(catc, rxmode)               catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL)
213 #define f5u011_mchash_async(catc, hash)                 catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL)
214 
215 #define catc_set_reg_async(catc, reg, val)              catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL)
216 #define catc_get_reg_async(catc, reg, cb)               catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb)
217 #define catc_write_mem_async(catc, addr, buf, size)     catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL)
218 
219 /*
220  * Receive routines.
221  */
222 
223 static void catc_rx_done(struct urb *urb)
224 {
225         struct catc *catc = urb->context;
226         u8 *pkt_start = urb->transfer_buffer;
227         struct sk_buff *skb;
228         int pkt_len, pkt_offset = 0;
229         int status = urb->status;
230 
231         if (!catc->is_f5u011) {
232                 clear_bit(RX_RUNNING, &catc->flags);
233                 pkt_offset = 2;
234         }
235 
236         if (status) {
237                 dev_dbg(&urb->dev->dev, "rx_done, status %d, length %d\n",
238                         status, urb->actual_length);
239                 return;
240         }
241 
242         do {
243                 if(!catc->is_f5u011) {
244                         pkt_len = le16_to_cpup((__le16*)pkt_start);
245                         if (pkt_len > urb->actual_length) {
246                                 catc->netdev->stats.rx_length_errors++;
247                                 catc->netdev->stats.rx_errors++;
248                                 break;
249                         }
250                 } else {
251                         pkt_len = urb->actual_length;
252                 }
253 
254                 if (!(skb = dev_alloc_skb(pkt_len)))
255                         return;
256 
257                 skb_copy_to_linear_data(skb, pkt_start + pkt_offset, pkt_len);
258                 skb_put(skb, pkt_len);
259 
260                 skb->protocol = eth_type_trans(skb, catc->netdev);
261                 netif_rx(skb);
262 
263                 catc->netdev->stats.rx_packets++;
264                 catc->netdev->stats.rx_bytes += pkt_len;
265 
266                 /* F5U011 only does one packet per RX */
267                 if (catc->is_f5u011)
268                         break;
269                 pkt_start += (((pkt_len + 1) >> 6) + 1) << 6;
270 
271         } while (pkt_start - (u8 *) urb->transfer_buffer < urb->actual_length);
272 
273         if (catc->is_f5u011) {
274                 if (atomic_read(&catc->recq_sz)) {
275                         int state;
276                         atomic_dec(&catc->recq_sz);
277                         netdev_dbg(catc->netdev, "getting extra packet\n");
278                         urb->dev = catc->usbdev;
279                         if ((state = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
280                                 netdev_dbg(catc->netdev,
281                                            "submit(rx_urb) status %d\n", state);
282                         }
283                 } else {
284                         clear_bit(RX_RUNNING, &catc->flags);
285                 }
286         }
287 }
288 
289 static void catc_irq_done(struct urb *urb)
290 {
291         struct catc *catc = urb->context;
292         u8 *data = urb->transfer_buffer;
293         int status = urb->status;
294         unsigned int hasdata = 0, linksts = LinkNoChange;
295         int res;
296 
297         if (!catc->is_f5u011) {
298                 hasdata = data[1] & 0x80;
299                 if (data[1] & 0x40)
300                         linksts = LinkGood;
301                 else if (data[1] & 0x20)
302                         linksts = LinkBad;
303         } else {
304                 hasdata = (unsigned int)(be16_to_cpup((__be16*)data) & 0x0fff);
305                 if (data[0] == 0x90)
306                         linksts = LinkGood;
307                 else if (data[0] == 0xA0)
308                         linksts = LinkBad;
309         }
310 
311         switch (status) {
312         case 0:                 /* success */
313                 break;
314         case -ECONNRESET:       /* unlink */
315         case -ENOENT:
316         case -ESHUTDOWN:
317                 return;
318         /* -EPIPE:  should clear the halt */
319         default:                /* error */
320                 dev_dbg(&urb->dev->dev,
321                         "irq_done, status %d, data %02x %02x.\n",
322                         status, data[0], data[1]);
323                 goto resubmit;
324         }
325 
326         if (linksts == LinkGood) {
327                 netif_carrier_on(catc->netdev);
328                 netdev_dbg(catc->netdev, "link ok\n");
329         }
330 
331         if (linksts == LinkBad) {
332                 netif_carrier_off(catc->netdev);
333                 netdev_dbg(catc->netdev, "link bad\n");
334         }
335 
336         if (hasdata) {
337                 if (test_and_set_bit(RX_RUNNING, &catc->flags)) {
338                         if (catc->is_f5u011)
339                                 atomic_inc(&catc->recq_sz);
340                 } else {
341                         catc->rx_urb->dev = catc->usbdev;
342                         if ((res = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {
343                                 dev_err(&catc->usbdev->dev,
344                                         "submit(rx_urb) status %d\n", res);
345                         }
346                 } 
347         }
348 resubmit:
349         res = usb_submit_urb (urb, GFP_ATOMIC);
350         if (res)
351                 dev_err(&catc->usbdev->dev,
352                         "can't resubmit intr, %s-%s, status %d\n",
353                         catc->usbdev->bus->bus_name,
354                         catc->usbdev->devpath, res);
355 }
356 
357 /*
358  * Transmit routines.
359  */
360 
361 static int catc_tx_run(struct catc *catc)
362 {
363         int status;
364 
365         if (catc->is_f5u011)
366                 catc->tx_ptr = (catc->tx_ptr + 63) & ~63;
367 
368         catc->tx_urb->transfer_buffer_length = catc->tx_ptr;
369         catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx];
370         catc->tx_urb->dev = catc->usbdev;
371 
372         if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0)
373                 dev_err(&catc->usbdev->dev, "submit(tx_urb), status %d\n",
374                         status);
375 
376         catc->tx_idx = !catc->tx_idx;
377         catc->tx_ptr = 0;
378 
379         catc->netdev->trans_start = jiffies;
380         return status;
381 }
382 
383 static void catc_tx_done(struct urb *urb)
384 {
385         struct catc *catc = urb->context;
386         unsigned long flags;
387         int r, status = urb->status;
388 
389         if (status == -ECONNRESET) {
390                 dev_dbg(&urb->dev->dev, "Tx Reset.\n");
391                 urb->status = 0;
392                 catc->netdev->trans_start = jiffies;
393                 catc->netdev->stats.tx_errors++;
394                 clear_bit(TX_RUNNING, &catc->flags);
395                 netif_wake_queue(catc->netdev);
396                 return;
397         }
398 
399         if (status) {
400                 dev_dbg(&urb->dev->dev, "tx_done, status %d, length %d\n",
401                         status, urb->actual_length);
402                 return;
403         }
404 
405         spin_lock_irqsave(&catc->tx_lock, flags);
406 
407         if (catc->tx_ptr) {
408                 r = catc_tx_run(catc);
409                 if (unlikely(r < 0))
410                         clear_bit(TX_RUNNING, &catc->flags);
411         } else {
412                 clear_bit(TX_RUNNING, &catc->flags);
413         }
414 
415         netif_wake_queue(catc->netdev);
416 
417         spin_unlock_irqrestore(&catc->tx_lock, flags);
418 }
419 
420 static netdev_tx_t catc_start_xmit(struct sk_buff *skb,
421                                          struct net_device *netdev)
422 {
423         struct catc *catc = netdev_priv(netdev);
424         unsigned long flags;
425         int r = 0;
426         char *tx_buf;
427 
428         spin_lock_irqsave(&catc->tx_lock, flags);
429 
430         catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
431         tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
432         if (catc->is_f5u011)
433                 *(__be16 *)tx_buf = cpu_to_be16(skb->len);
434         else
435                 *(__le16 *)tx_buf = cpu_to_le16(skb->len);
436         skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
437         catc->tx_ptr += skb->len + 2;
438 
439         if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {
440                 r = catc_tx_run(catc);
441                 if (r < 0)
442                         clear_bit(TX_RUNNING, &catc->flags);
443         }
444 
445         if ((catc->is_f5u011 && catc->tx_ptr) ||
446             (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
447                 netif_stop_queue(netdev);
448 
449         spin_unlock_irqrestore(&catc->tx_lock, flags);
450 
451         if (r >= 0) {
452                 catc->netdev->stats.tx_bytes += skb->len;
453                 catc->netdev->stats.tx_packets++;
454         }
455 
456         dev_kfree_skb(skb);
457 
458         return NETDEV_TX_OK;
459 }
460 
461 static void catc_tx_timeout(struct net_device *netdev)
462 {
463         struct catc *catc = netdev_priv(netdev);
464 
465         dev_warn(&netdev->dev, "Transmit timed out.\n");
466         usb_unlink_urb(catc->tx_urb);
467 }
468 
469 /*
470  * Control messages.
471  */
472 
473 static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
474 {
475         int retval = usb_control_msg(catc->usbdev,
476                 dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),
477                  request, 0x40 | dir, value, index, buf, len, 1000);
478         return retval < 0 ? retval : 0;
479 }
480 
481 static void catc_ctrl_run(struct catc *catc)
482 {
483         struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;
484         struct usb_device *usbdev = catc->usbdev;
485         struct urb *urb = catc->ctrl_urb;
486         struct usb_ctrlrequest *dr = &catc->ctrl_dr;
487         int status;
488 
489         dr->bRequest = q->request;
490         dr->bRequestType = 0x40 | q->dir;
491         dr->wValue = cpu_to_le16(q->value);
492         dr->wIndex = cpu_to_le16(q->index);
493         dr->wLength = cpu_to_le16(q->len);
494 
495         urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);
496         urb->transfer_buffer_length = q->len;
497         urb->transfer_buffer = catc->ctrl_buf;
498         urb->setup_packet = (void *) dr;
499         urb->dev = usbdev;
500 
501         if (!q->dir && q->buf && q->len)
502                 memcpy(catc->ctrl_buf, q->buf, q->len);
503 
504         if ((status = usb_submit_urb(catc->ctrl_urb, GFP_ATOMIC)))
505                 dev_err(&catc->usbdev->dev, "submit(ctrl_urb) status %d\n",
506                         status);
507 }
508 
509 static void catc_ctrl_done(struct urb *urb)
510 {
511         struct catc *catc = urb->context;
512         struct ctrl_queue *q;
513         unsigned long flags;
514         int status = urb->status;
515 
516         if (status)
517                 dev_dbg(&urb->dev->dev, "ctrl_done, status %d, len %d.\n",
518                         status, urb->actual_length);
519 
520         spin_lock_irqsave(&catc->ctrl_lock, flags);
521 
522         q = catc->ctrl_queue + catc->ctrl_tail;
523 
524         if (q->dir) {
525                 if (q->buf && q->len)
526                         memcpy(q->buf, catc->ctrl_buf, q->len);
527                 else
528                         q->buf = catc->ctrl_buf;
529         }
530 
531         if (q->callback)
532                 q->callback(catc, q);
533 
534         catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
535 
536         if (catc->ctrl_head != catc->ctrl_tail)
537                 catc_ctrl_run(catc);
538         else
539                 clear_bit(CTRL_RUNNING, &catc->flags);
540 
541         spin_unlock_irqrestore(&catc->ctrl_lock, flags);
542 }
543 
544 static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,
545         u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))
546 {
547         struct ctrl_queue *q;
548         int retval = 0;
549         unsigned long flags;
550 
551         spin_lock_irqsave(&catc->ctrl_lock, flags);
552         
553         q = catc->ctrl_queue + catc->ctrl_head;
554 
555         q->dir = dir;
556         q->request = request;
557         q->value = value;
558         q->index = index;
559         q->buf = buf;
560         q->len = len;
561         q->callback = callback;
562 
563         catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);
564 
565         if (catc->ctrl_head == catc->ctrl_tail) {
566                 dev_err(&catc->usbdev->dev, "ctrl queue full\n");
567                 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
568                 retval = -1;
569         }
570 
571         if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))
572                 catc_ctrl_run(catc);
573 
574         spin_unlock_irqrestore(&catc->ctrl_lock, flags);
575 
576         return retval;
577 }
578 
579 /*
580  * Statistics.
581  */
582 
583 static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)
584 {
585         int index = q->index - EthStats;
586         u16 data, last;
587 
588         catc->stats_buf[index] = *((char *)q->buf);
589 
590         if (index & 1)
591                 return;
592 
593         data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];
594         last = catc->stats_vals[index >> 1];
595 
596         switch (index) {
597                 case TxSingleColl:
598                 case TxMultiColl:
599                         catc->netdev->stats.collisions += data - last;
600                         break;
601                 case TxExcessColl:
602                         catc->netdev->stats.tx_aborted_errors += data - last;
603                         catc->netdev->stats.tx_errors += data - last;
604                         break;
605                 case RxFramErr:
606                         catc->netdev->stats.rx_frame_errors += data - last;
607                         catc->netdev->stats.rx_errors += data - last;
608                         break;
609         }
610 
611         catc->stats_vals[index >> 1] = data;
612 }
613 
614 static void catc_stats_timer(unsigned long data)
615 {
616         struct catc *catc = (void *) data;
617         int i;
618 
619         for (i = 0; i < 8; i++)
620                 catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);
621 
622         mod_timer(&catc->timer, jiffies + STATS_UPDATE);
623 }
624 
625 /*
626  * Receive modes. Broadcast, Multicast, Promisc.
627  */
628 
629 static void catc_multicast(unsigned char *addr, u8 *multicast)
630 {
631         u32 crc;
632 
633         crc = ether_crc_le(6, addr);
634         multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
635 }
636 
637 static void catc_set_multicast_list(struct net_device *netdev)
638 {
639         struct catc *catc = netdev_priv(netdev);
640         struct netdev_hw_addr *ha;
641         u8 broadcast[ETH_ALEN];
642         u8 rx = RxEnable | RxPolarity | RxMultiCast;
643 
644         memset(broadcast, 0xff, ETH_ALEN);
645         memset(catc->multicast, 0, 64);
646 
647         catc_multicast(broadcast, catc->multicast);
648         catc_multicast(netdev->dev_addr, catc->multicast);
649 
650         if (netdev->flags & IFF_PROMISC) {
651                 memset(catc->multicast, 0xff, 64);
652                 rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;
653         } 
654 
655         if (netdev->flags & IFF_ALLMULTI) {
656                 memset(catc->multicast, 0xff, 64);
657         } else {
658                 netdev_for_each_mc_addr(ha, netdev) {
659                         u32 crc = ether_crc_le(6, ha->addr);
660                         if (!catc->is_f5u011) {
661                                 catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
662                         } else {
663                                 catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);
664                         }
665                 }
666         }
667         if (!catc->is_f5u011) {
668                 catc_set_reg_async(catc, RxUnit, rx);
669                 catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);
670         } else {
671                 f5u011_mchash_async(catc, catc->multicast);
672                 if (catc->rxmode[0] != rx) {
673                         catc->rxmode[0] = rx;
674                         netdev_dbg(catc->netdev,
675                                    "Setting RX mode to %2.2X %2.2X\n",
676                                    catc->rxmode[0], catc->rxmode[1]);
677                         f5u011_rxmode_async(catc, catc->rxmode);
678                 }
679         }
680 }
681 
682 static void catc_get_drvinfo(struct net_device *dev,
683                              struct ethtool_drvinfo *info)
684 {
685         struct catc *catc = netdev_priv(dev);
686         strlcpy(info->driver, driver_name, sizeof(info->driver));
687         strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
688         usb_make_path(catc->usbdev, info->bus_info, sizeof(info->bus_info));
689 }
690 
691 static int catc_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
692 {
693         struct catc *catc = netdev_priv(dev);
694         if (!catc->is_f5u011)
695                 return -EOPNOTSUPP;
696 
697         cmd->supported = SUPPORTED_10baseT_Half | SUPPORTED_TP;
698         cmd->advertising = ADVERTISED_10baseT_Half | ADVERTISED_TP;
699         ethtool_cmd_speed_set(cmd, SPEED_10);
700         cmd->duplex = DUPLEX_HALF;
701         cmd->port = PORT_TP; 
702         cmd->phy_address = 0;
703         cmd->transceiver = XCVR_INTERNAL;
704         cmd->autoneg = AUTONEG_DISABLE;
705         cmd->maxtxpkt = 1;
706         cmd->maxrxpkt = 1;
707         return 0;
708 }
709 
710 static const struct ethtool_ops ops = {
711         .get_drvinfo = catc_get_drvinfo,
712         .get_settings = catc_get_settings,
713         .get_link = ethtool_op_get_link
714 };
715 
716 /*
717  * Open, close.
718  */
719 
720 static int catc_open(struct net_device *netdev)
721 {
722         struct catc *catc = netdev_priv(netdev);
723         int status;
724 
725         catc->irq_urb->dev = catc->usbdev;
726         if ((status = usb_submit_urb(catc->irq_urb, GFP_KERNEL)) < 0) {
727                 dev_err(&catc->usbdev->dev, "submit(irq_urb) status %d\n",
728                         status);
729                 return -1;
730         }
731 
732         netif_start_queue(netdev);
733 
734         if (!catc->is_f5u011)
735                 mod_timer(&catc->timer, jiffies + STATS_UPDATE);
736 
737         return 0;
738 }
739 
740 static int catc_stop(struct net_device *netdev)
741 {
742         struct catc *catc = netdev_priv(netdev);
743 
744         netif_stop_queue(netdev);
745 
746         if (!catc->is_f5u011)
747                 del_timer_sync(&catc->timer);
748 
749         usb_kill_urb(catc->rx_urb);
750         usb_kill_urb(catc->tx_urb);
751         usb_kill_urb(catc->irq_urb);
752         usb_kill_urb(catc->ctrl_urb);
753 
754         return 0;
755 }
756 
757 static const struct net_device_ops catc_netdev_ops = {
758         .ndo_open               = catc_open,
759         .ndo_stop               = catc_stop,
760         .ndo_start_xmit         = catc_start_xmit,
761 
762         .ndo_tx_timeout         = catc_tx_timeout,
763         .ndo_set_rx_mode        = catc_set_multicast_list,
764         .ndo_change_mtu         = eth_change_mtu,
765         .ndo_set_mac_address    = eth_mac_addr,
766         .ndo_validate_addr      = eth_validate_addr,
767 };
768 
769 /*
770  * USB probe, disconnect.
771  */
772 
773 static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)
774 {
775         struct device *dev = &intf->dev;
776         struct usb_device *usbdev = interface_to_usbdev(intf);
777         struct net_device *netdev;
778         struct catc *catc;
779         u8 broadcast[ETH_ALEN];
780         int i, pktsz;
781 
782         if (usb_set_interface(usbdev,
783                         intf->altsetting->desc.bInterfaceNumber, 1)) {
784                 dev_err(dev, "Can't set altsetting 1.\n");
785                 return -EIO;
786         }
787 
788         netdev = alloc_etherdev(sizeof(struct catc));
789         if (!netdev)
790                 return -ENOMEM;
791 
792         catc = netdev_priv(netdev);
793 
794         netdev->netdev_ops = &catc_netdev_ops;
795         netdev->watchdog_timeo = TX_TIMEOUT;
796         SET_ETHTOOL_OPS(netdev, &ops);
797 
798         catc->usbdev = usbdev;
799         catc->netdev = netdev;
800 
801         spin_lock_init(&catc->tx_lock);
802         spin_lock_init(&catc->ctrl_lock);
803 
804         init_timer(&catc->timer);
805         catc->timer.data = (long) catc;
806         catc->timer.function = catc_stats_timer;
807 
808         catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
809         catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
810         catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
811         catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
812         if ((!catc->ctrl_urb) || (!catc->tx_urb) || 
813             (!catc->rx_urb) || (!catc->irq_urb)) {
814                 dev_err(&intf->dev, "No free urbs available.\n");
815                 usb_free_urb(catc->ctrl_urb);
816                 usb_free_urb(catc->tx_urb);
817                 usb_free_urb(catc->rx_urb);
818                 usb_free_urb(catc->irq_urb);
819                 free_netdev(netdev);
820                 return -ENOMEM;
821         }
822 
823         /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
824         if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 && 
825             le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
826             le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
827                 dev_dbg(dev, "Testing for f5u011\n");
828                 catc->is_f5u011 = 1;            
829                 atomic_set(&catc->recq_sz, 0);
830                 pktsz = RX_PKT_SZ;
831         } else {
832                 pktsz = RX_MAX_BURST * (PKT_SZ + 2);
833         }
834         
835         usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
836                 NULL, NULL, 0, catc_ctrl_done, catc);
837 
838         usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
839                 NULL, 0, catc_tx_done, catc);
840 
841         usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
842                 catc->rx_buf, pktsz, catc_rx_done, catc);
843 
844         usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
845                 catc->irq_buf, 2, catc_irq_done, catc, 1);
846 
847         if (!catc->is_f5u011) {
848                 dev_dbg(dev, "Checking memory size\n");
849 
850                 i = 0x12345678;
851                 catc_write_mem(catc, 0x7a80, &i, 4);
852                 i = 0x87654321; 
853                 catc_write_mem(catc, 0xfa80, &i, 4);
854                 catc_read_mem(catc, 0x7a80, &i, 4);
855           
856                 switch (i) {
857                 case 0x12345678:
858                         catc_set_reg(catc, TxBufCount, 8);
859                         catc_set_reg(catc, RxBufCount, 32);
860                         dev_dbg(dev, "64k Memory\n");
861                         break;
862                 default:
863                         dev_warn(&intf->dev,
864                                  "Couldn't detect memory size, assuming 32k\n");
865                 case 0x87654321:
866                         catc_set_reg(catc, TxBufCount, 4);
867                         catc_set_reg(catc, RxBufCount, 16);
868                         dev_dbg(dev, "32k Memory\n");
869                         break;
870                 }
871           
872                 dev_dbg(dev, "Getting MAC from SEEROM.\n");
873           
874                 catc_get_mac(catc, netdev->dev_addr);
875                 
876                 dev_dbg(dev, "Setting MAC into registers.\n");
877           
878                 for (i = 0; i < 6; i++)
879                         catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
880                 
881                 dev_dbg(dev, "Filling the multicast list.\n");
882           
883                 memset(broadcast, 0xff, ETH_ALEN);
884                 catc_multicast(broadcast, catc->multicast);
885                 catc_multicast(netdev->dev_addr, catc->multicast);
886                 catc_write_mem(catc, 0xfa80, catc->multicast, 64);
887                 
888                 dev_dbg(dev, "Clearing error counters.\n");
889                 
890                 for (i = 0; i < 8; i++)
891                         catc_set_reg(catc, EthStats + i, 0);
892                 catc->last_stats = jiffies;
893                 
894                 dev_dbg(dev, "Enabling.\n");
895                 
896                 catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
897                 catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
898                 catc_set_reg(catc, LEDCtrl, LEDLink);
899                 catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
900         } else {
901                 dev_dbg(dev, "Performing reset\n");
902                 catc_reset(catc);
903                 catc_get_mac(catc, netdev->dev_addr);
904                 
905                 dev_dbg(dev, "Setting RX Mode\n");
906                 catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
907                 catc->rxmode[1] = 0;
908                 f5u011_rxmode(catc, catc->rxmode);
909         }
910         dev_dbg(dev, "Init done.\n");
911         printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n",
912                netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
913                usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr);
914         usb_set_intfdata(intf, catc);
915 
916         SET_NETDEV_DEV(netdev, &intf->dev);
917         if (register_netdev(netdev) != 0) {
918                 usb_set_intfdata(intf, NULL);
919                 usb_free_urb(catc->ctrl_urb);
920                 usb_free_urb(catc->tx_urb);
921                 usb_free_urb(catc->rx_urb);
922                 usb_free_urb(catc->irq_urb);
923                 free_netdev(netdev);
924                 return -EIO;
925         }
926         return 0;
927 }
928 
929 static void catc_disconnect(struct usb_interface *intf)
930 {
931         struct catc *catc = usb_get_intfdata(intf);
932 
933         usb_set_intfdata(intf, NULL);
934         if (catc) {
935                 unregister_netdev(catc->netdev);
936                 usb_free_urb(catc->ctrl_urb);
937                 usb_free_urb(catc->tx_urb);
938                 usb_free_urb(catc->rx_urb);
939                 usb_free_urb(catc->irq_urb);
940                 free_netdev(catc->netdev);
941         }
942 }
943 
944 /*
945  * Module functions and tables.
946  */
947 
948 static struct usb_device_id catc_id_table [] = {
949         { USB_DEVICE(0x0423, 0xa) },    /* CATC Netmate, Belkin F5U011 */
950         { USB_DEVICE(0x0423, 0xc) },    /* CATC Netmate II, Belkin F5U111 */
951         { USB_DEVICE(0x08d1, 0x1) },    /* smartBridges smartNIC */
952         { }
953 };
954 
955 MODULE_DEVICE_TABLE(usb, catc_id_table);
956 
957 static struct usb_driver catc_driver = {
958         .name =         driver_name,
959         .probe =        catc_probe,
960         .disconnect =   catc_disconnect,
961         .id_table =     catc_id_table,
962         .disable_hub_initiated_lpm = 1,
963 };
964 
965 module_usb_driver(catc_driver);
966 

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