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/netdevice.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/skbuff.h>
  42 #include <linux/spinlock.h>
  43 #include <linux/ethtool.h>
  44 #include <linux/crc32.h>
  45 #include <linux/bitops.h>
  46 #include <linux/gfp.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         unsigned long flags;
 167
 168         unsigned int tx_ptr, tx_idx;
 169         unsigned int ctrl_head, ctrl_tail;
 170         spinlock_t tx_lock, ctrl_lock;
 171
 172         u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)];
 173         u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)];
 174         u8 irq_buf[2];
 175         u8 ctrl_buf[64];
 176         struct usb_ctrlrequest ctrl_dr;
 177
 178         struct timer_list timer;
 179         u8 stats_buf[8];
 180         u16 stats_vals[4];
 181         unsigned long last_stats;
 182
 183         u8 multicast[64];
 184
 185         struct ctrl_queue {
 186                 u8 dir;
 187                 u8 request;
 188                 u16 value;
 189                 u16 index;
 190                 void *buf;
 191                 int len;
 192                 void (*callback)(struct catc *catc, struct ctrl_queue *q);
 193         } ctrl_queue[CTRL_QUEUE];
 194
 195         struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb;
 196
 197         u8 is_f5u011;   /* Set if device is an F5U011 */
 198         u8 rxmode[2];   /* Used for F5U011 */
 199         atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */
 200 };
 201
 202 /*
 203  * Useful macros.
 204  */
 205
 206 #define catc_get_mac(catc, mac)                         catc_ctrl_msg(catc, USB_DIR_IN,  GetMac, 0, 0, mac,  6)
 207 #define catc_reset(catc)                                catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0)
 208 #define catc_set_reg(catc, reg, val)                    catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0)
 209 #define catc_get_reg(catc, reg, buf)                    catc_ctrl_msg(catc, USB_DIR_IN,  GetReg, 0, reg, buf, 1)
 210 #define catc_write_mem(catc, addr, buf, size)           catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size)
 211 #define catc_read_mem(catc, addr, buf, size)            catc_ctrl_msg(catc, USB_DIR_IN,  ReadMem, 0, addr, buf, size)
 212
 213 #define f5u011_rxmode(catc, rxmode)                     catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2)
 214 #define f5u011_rxmode_async(catc, rxmode)               catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL)
 215 #define f5u011_mchash_async(catc, hash)                 catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL)
 216
 217 #define catc_set_reg_async(catc, reg, val)              catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL)
 218 #define catc_get_reg_async(catc, reg, cb)               catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb)
 219 #define catc_write_mem_async(catc, addr, buf, size)     catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL)
 220
 221 /*
 222  * Receive routines.
 223  */
 224
 225 static void catc_rx_done(struct urb *urb)
 226 {
 227         struct catc *catc = urb->context;
 228         u8 *pkt_start = urb->transfer_buffer;
 229         struct sk_buff *skb;
 230         int pkt_len, pkt_offset = 0;
 231         int status = urb->status;
 232
 233         if (!catc->is_f5u011) {
 234                 clear_bit(RX_RUNNING, &catc->flags);
 235                 pkt_offset = 2;
 236         }
 237
 238         if (status) {
 239                 dbg("rx_done, status %d, length %d", 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->netdev->stats.rx_length_errors++;
 248                                 catc->netdev->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->netdev->stats.rx_packets++;
 265                 catc->netdev->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         if (catc->is_f5u011) {
 275                 if (atomic_read(&catc->recq_sz)) {
 276                         int state;
 277                         atomic_dec(&catc->recq_sz);
 278                         dbg("getting extra packet");
 279                         urb->dev = catc->usbdev;
 280                         if ((state = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
 281                                 dbg("submit(rx_urb) status %d", 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                 dbg("irq_done, status %d, data %02x %02x.", status, data[0], data[1]);
 321                 goto resubmit;
 322         }
 323
 324         if (linksts == LinkGood) {
 325                 netif_carrier_on(catc->netdev);
 326                 dbg("link ok");
 327         }
 328
 329         if (linksts == LinkBad) {
 330                 netif_carrier_off(catc->netdev);
 331                 dbg("link bad");
 332         }
 333
 334         if (hasdata) {
 335                 if (test_and_set_bit(RX_RUNNING, &catc->flags)) {
 336                         if (catc->is_f5u011)
 337                                 atomic_inc(&catc->recq_sz);
 338                 } else {
 339                         catc->rx_urb->dev = catc->usbdev;
 340                         if ((res = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {
 341                                 dev_err(&catc->usbdev->dev,
 342                                         "submit(rx_urb) status %d\n", res);
 343                         }
 344                 }
 345         }
 346 resubmit:
 347         res = usb_submit_urb (urb, GFP_ATOMIC);
 348         if (res)
 349                 dev_err(&catc->usbdev->dev,
 350                         "can't resubmit intr, %s-%s, status %d\n",
 351                         catc->usbdev->bus->bus_name,
 352                         catc->usbdev->devpath, res);
 353 }
 354
 355 /*
 356  * Transmit routines.
 357  */
 358
 359 static int catc_tx_run(struct catc *catc)
 360 {
 361         int status;
 362
 363         if (catc->is_f5u011)
 364                 catc->tx_ptr = (catc->tx_ptr + 63) & ~63;
 365
 366         catc->tx_urb->transfer_buffer_length = catc->tx_ptr;
 367         catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx];
 368         catc->tx_urb->dev = catc->usbdev;
 369
 370         if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0)
 371                 dev_err(&catc->usbdev->dev, "submit(tx_urb), status %d\n",
 372                         status);
 373
 374         catc->tx_idx = !catc->tx_idx;
 375         catc->tx_ptr = 0;
 376
 377         catc->netdev->trans_start = jiffies;
 378         return status;
 379 }
 380
 381 static void catc_tx_done(struct urb *urb)
 382 {
 383         struct catc *catc = urb->context;
 384         unsigned long flags;
 385         int r, status = urb->status;
 386
 387         if (status == -ECONNRESET) {
 388                 dbg("Tx Reset.");
 389                 urb->status = 0;
 390                 catc->netdev->trans_start = jiffies;
 391                 catc->netdev->stats.tx_errors++;
 392                 clear_bit(TX_RUNNING, &catc->flags);
 393                 netif_wake_queue(catc->netdev);
 394                 return;
 395         }
 396
 397         if (status) {
 398                 dbg("tx_done, status %d, length %d", status, urb->actual_length);
 399                 return;
 400         }
 401
 402         spin_lock_irqsave(&catc->tx_lock, flags);
 403
 404         if (catc->tx_ptr) {
 405                 r = catc_tx_run(catc);
 406                 if (unlikely(r < 0))
 407                         clear_bit(TX_RUNNING, &catc->flags);
 408         } else {
 409                 clear_bit(TX_RUNNING, &catc->flags);
 410         }
 411
 412         netif_wake_queue(catc->netdev);
 413
 414         spin_unlock_irqrestore(&catc->tx_lock, flags);
 415 }
 416
 417 static netdev_tx_t catc_start_xmit(struct sk_buff *skb,
 418                                          struct net_device *netdev)
 419 {
 420         struct catc *catc = netdev_priv(netdev);
 421         unsigned long flags;
 422         int r = 0;
 423         char *tx_buf;
 424
 425         spin_lock_irqsave(&catc->tx_lock, flags);
 426
 427         catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
 428         tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
 429         if (catc->is_f5u011)
 430                 *(__be16 *)tx_buf = cpu_to_be16(skb->len);
 431         else
 432                 *(__le16 *)tx_buf = cpu_to_le16(skb->len);
 433         skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
 434         catc->tx_ptr += skb->len + 2;
 435
 436         if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {
 437                 r = catc_tx_run(catc);
 438                 if (r < 0)
 439                         clear_bit(TX_RUNNING, &catc->flags);
 440         }
 441
 442         if ((catc->is_f5u011 && catc->tx_ptr) ||
 443             (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
 444                 netif_stop_queue(netdev);
 445
 446         spin_unlock_irqrestore(&catc->tx_lock, flags);
 447
 448         if (r >= 0) {
 449                 catc->netdev->stats.tx_bytes += skb->len;
 450                 catc->netdev->stats.tx_packets++;
 451         }
 452
 453         dev_kfree_skb(skb);
 454
 455         return NETDEV_TX_OK;
 456 }
 457
 458 static void catc_tx_timeout(struct net_device *netdev)
 459 {
 460         struct catc *catc = netdev_priv(netdev);
 461
 462         dev_warn(&netdev->dev, "Transmit timed out.\n");
 463         usb_unlink_urb(catc->tx_urb);
 464 }
 465
 466 /*
 467  * Control messages.
 468  */
 469
 470 static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
 471 {
 472         int retval = usb_control_msg(catc->usbdev,
 473                 dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),
 474                  request, 0x40 | dir, value, index, buf, len, 1000);
 475         return retval < 0 ? retval : 0;
 476 }
 477
 478 static void catc_ctrl_run(struct catc *catc)
 479 {
 480         struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;
 481         struct usb_device *usbdev = catc->usbdev;
 482         struct urb *urb = catc->ctrl_urb;
 483         struct usb_ctrlrequest *dr = &catc->ctrl_dr;
 484         int status;
 485
 486         dr->bRequest = q->request;
 487         dr->bRequestType = 0x40 | q->dir;
 488         dr->wValue = cpu_to_le16(q->value);
 489         dr->wIndex = cpu_to_le16(q->index);
 490         dr->wLength = cpu_to_le16(q->len);
 491
 492         urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);
 493         urb->transfer_buffer_length = q->len;
 494         urb->transfer_buffer = catc->ctrl_buf;
 495         urb->setup_packet = (void *) dr;
 496         urb->dev = usbdev;
 497
 498         if (!q->dir && q->buf && q->len)
 499                 memcpy(catc->ctrl_buf, q->buf, q->len);
 500
 501         if ((status = usb_submit_urb(catc->ctrl_urb, GFP_ATOMIC)))
 502                 dev_err(&catc->usbdev->dev, "submit(ctrl_urb) status %d\n",
 503                         status);
 504 }
 505
 506 static void catc_ctrl_done(struct urb *urb)
 507 {
 508         struct catc *catc = urb->context;
 509         struct ctrl_queue *q;
 510         unsigned long flags;
 511         int status = urb->status;
 512
 513         if (status)
 514                 dbg("ctrl_done, status %d, len %d.", status, urb->actual_length);
 515
 516         spin_lock_irqsave(&catc->ctrl_lock, flags);
 517
 518         q = catc->ctrl_queue + catc->ctrl_tail;
 519
 520         if (q->dir) {
 521                 if (q->buf && q->len)
 522                         memcpy(q->buf, catc->ctrl_buf, q->len);
 523                 else
 524                         q->buf = catc->ctrl_buf;
 525         }
 526
 527         if (q->callback)
 528                 q->callback(catc, q);
 529
 530         catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
 531
 532         if (catc->ctrl_head != catc->ctrl_tail)
 533                 catc_ctrl_run(catc);
 534         else
 535                 clear_bit(CTRL_RUNNING, &catc->flags);
 536
 537         spin_unlock_irqrestore(&catc->ctrl_lock, flags);
 538 }
 539
 540 static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,
 541         u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))
 542 {
 543         struct ctrl_queue *q;
 544         int retval = 0;
 545         unsigned long flags;
 546
 547         spin_lock_irqsave(&catc->ctrl_lock, flags);
 548
 549         q = catc->ctrl_queue + catc->ctrl_head;
 550
 551         q->dir = dir;
 552         q->request = request;
 553         q->value = value;
 554         q->index = index;
 555         q->buf = buf;
 556         q->len = len;
 557         q->callback = callback;
 558
 559         catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);
 560
 561         if (catc->ctrl_head == catc->ctrl_tail) {
 562                 dev_err(&catc->usbdev->dev, "ctrl queue full\n");
 563                 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
 564                 retval = -1;
 565         }
 566
 567         if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))
 568                 catc_ctrl_run(catc);
 569
 570         spin_unlock_irqrestore(&catc->ctrl_lock, flags);
 571
 572         return retval;
 573 }
 574
 575 /*
 576  * Statistics.
 577  */
 578
 579 static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)
 580 {
 581         int index = q->index - EthStats;
 582         u16 data, last;
 583
 584         catc->stats_buf[index] = *((char *)q->buf);
 585
 586         if (index & 1)
 587                 return;
 588
 589         data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];
 590         last = catc->stats_vals[index >> 1];
 591
 592         switch (index) {
 593                 case TxSingleColl:
 594                 case TxMultiColl:
 595                         catc->netdev->stats.collisions += data - last;
 596                         break;
 597                 case TxExcessColl:
 598                         catc->netdev->stats.tx_aborted_errors += data - last;
 599                         catc->netdev->stats.tx_errors += data - last;
 600                         break;
 601                 case RxFramErr:
 602                         catc->netdev->stats.rx_frame_errors += data - last;
 603                         catc->netdev->stats.rx_errors += data - last;
 604                         break;
 605         }
 606
 607         catc->stats_vals[index >> 1] = data;
 608 }
 609
 610 static void catc_stats_timer(unsigned long data)
 611 {
 612         struct catc *catc = (void *) data;
 613         int i;
 614
 615         for (i = 0; i < 8; i++)
 616                 catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);
 617
 618         mod_timer(&catc->timer, jiffies + STATS_UPDATE);
 619 }
 620
 621 /*
 622  * Receive modes. Broadcast, Multicast, Promisc.
 623  */
 624
 625 static void catc_multicast(unsigned char *addr, u8 *multicast)
 626 {
 627         u32 crc;
 628
 629         crc = ether_crc_le(6, addr);
 630         multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
 631 }
 632
 633 static void catc_set_multicast_list(struct net_device *netdev)
 634 {
 635         struct catc *catc = netdev_priv(netdev);
 636         struct netdev_hw_addr *ha;
 637         u8 broadcast[6];
 638         u8 rx = RxEnable | RxPolarity | RxMultiCast;
 639
 640         memset(broadcast, 0xff, 6);
 641         memset(catc->multicast, 0, 64);
 642
 643         catc_multicast(broadcast, catc->multicast);
 644         catc_multicast(netdev->dev_addr, catc->multicast);
 645
 646         if (netdev->flags & IFF_PROMISC) {
 647                 memset(catc->multicast, 0xff, 64);
 648                 rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;
 649         }
 650
 651         if (netdev->flags & IFF_ALLMULTI) {
 652                 memset(catc->multicast, 0xff, 64);
 653         } else {
 654                 netdev_for_each_mc_addr(ha, netdev) {
 655                         u32 crc = ether_crc_le(6, ha->addr);
 656                         if (!catc->is_f5u011) {
 657                                 catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
 658                         } else {
 659                                 catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);
 660                         }
 661                 }
 662         }
 663         if (!catc->is_f5u011) {
 664                 catc_set_reg_async(catc, RxUnit, rx);
 665                 catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);
 666         } else {
 667                 f5u011_mchash_async(catc, catc->multicast);
 668                 if (catc->rxmode[0] != rx) {
 669                         catc->rxmode[0] = rx;
 670                         dbg("Setting RX mode to %2.2X %2.2X", catc->rxmode[0], catc->rxmode[1]);
 671                         f5u011_rxmode_async(catc, catc->rxmode);
 672                 }
 673         }
 674 }
 675
 676 static void catc_get_drvinfo(struct net_device *dev,
 677                              struct ethtool_drvinfo *info)
 678 {
 679         struct catc *catc = netdev_priv(dev);
 680         strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
 681         strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
 682         usb_make_path (catc->usbdev, info->bus_info, sizeof info->bus_info);
 683 }
 684
 685 static int catc_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 686 {
 687         struct catc *catc = netdev_priv(dev);
 688         if (!catc->is_f5u011)
 689                 return -EOPNOTSUPP;
 690
 691         cmd->supported = SUPPORTED_10baseT_Half | SUPPORTED_TP;
 692         cmd->advertising = ADVERTISED_10baseT_Half | ADVERTISED_TP;
 693         ethtool_cmd_speed_set(cmd, SPEED_10);
 694         cmd->duplex = DUPLEX_HALF;
 695         cmd->port = PORT_TP;
 696         cmd->phy_address = 0;
 697         cmd->transceiver = XCVR_INTERNAL;
 698         cmd->autoneg = AUTONEG_DISABLE;
 699         cmd->maxtxpkt = 1;
 700         cmd->maxrxpkt = 1;
 701         return 0;
 702 }
 703
 704 static const struct ethtool_ops ops = {
 705         .get_drvinfo = catc_get_drvinfo,
 706         .get_settings = catc_get_settings,
 707         .get_link = ethtool_op_get_link
 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_change_mtu         = eth_change_mtu,
 759         .ndo_set_mac_address    = eth_mac_addr,
 760         .ndo_validate_addr      = eth_validate_addr,
 761 };
 762
 763 /*
 764  * USB probe, disconnect.
 765  */
 766
 767 static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)
 768 {
 769         struct usb_device *usbdev = interface_to_usbdev(intf);
 770         struct net_device *netdev;
 771         struct catc *catc;
 772         u8 broadcast[6];
 773         int i, pktsz;
 774
 775         if (usb_set_interface(usbdev,
 776                         intf->altsetting->desc.bInterfaceNumber, 1)) {
 777                 dev_err(&intf->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         SET_ETHTOOL_OPS(netdev, &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         init_timer(&catc->timer);
 798         catc->timer.data = (long) catc;
 799         catc->timer.function = catc_stats_timer;
 800
 801         catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
 802         catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
 803         catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
 804         catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
 805         if ((!catc->ctrl_urb) || (!catc->tx_urb) ||
 806             (!catc->rx_urb) || (!catc->irq_urb)) {
 807                 dev_err(&intf->dev, "No free urbs available.\n");
 808                 usb_free_urb(catc->ctrl_urb);
 809                 usb_free_urb(catc->tx_urb);
 810                 usb_free_urb(catc->rx_urb);
 811                 usb_free_urb(catc->irq_urb);
 812                 free_netdev(netdev);
 813                 return -ENOMEM;
 814         }
 815
 816         /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
 817         if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 &&
 818             le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
 819             le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
 820                 dbg("Testing for f5u011");
 821                 catc->is_f5u011 = 1;
 822                 atomic_set(&catc->recq_sz, 0);
 823                 pktsz = RX_PKT_SZ;
 824         } else {
 825                 pktsz = RX_MAX_BURST * (PKT_SZ + 2);
 826         }
 827
 828         usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
 829                 NULL, NULL, 0, catc_ctrl_done, catc);
 830
 831         usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
 832                 NULL, 0, catc_tx_done, catc);
 833
 834         usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
 835                 catc->rx_buf, pktsz, catc_rx_done, catc);
 836
 837         usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
 838                 catc->irq_buf, 2, catc_irq_done, catc, 1);
 839
 840         if (!catc->is_f5u011) {
 841                 dbg("Checking memory size\n");
 842
 843                 i = 0x12345678;
 844                 catc_write_mem(catc, 0x7a80, &i, 4);
 845                 i = 0x87654321;
 846                 catc_write_mem(catc, 0xfa80, &i, 4);
 847                 catc_read_mem(catc, 0x7a80, &i, 4);
 848
 849                 switch (i) {
 850                 case 0x12345678:
 851                         catc_set_reg(catc, TxBufCount, 8);
 852                         catc_set_reg(catc, RxBufCount, 32);
 853                         dbg("64k Memory\n");
 854                         break;
 855                 default:
 856                         dev_warn(&intf->dev,
 857                                  "Couldn't detect memory size, assuming 32k\n");
 858                 case 0x87654321:
 859                         catc_set_reg(catc, TxBufCount, 4);
 860                         catc_set_reg(catc, RxBufCount, 16);
 861                         dbg("32k Memory\n");
 862                         break;
 863                 }
 864
 865                 dbg("Getting MAC from SEEROM.");
 866
 867                 catc_get_mac(catc, netdev->dev_addr);
 868
 869                 dbg("Setting MAC into registers.");
 870
 871                 for (i = 0; i < 6; i++)
 872                         catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
 873
 874                 dbg("Filling the multicast list.");
 875
 876                 memset(broadcast, 0xff, 6);
 877                 catc_multicast(broadcast, catc->multicast);
 878                 catc_multicast(netdev->dev_addr, catc->multicast);
 879                 catc_write_mem(catc, 0xfa80, catc->multicast, 64);
 880
 881                 dbg("Clearing error counters.");
 882
 883                 for (i = 0; i < 8; i++)
 884                         catc_set_reg(catc, EthStats + i, 0);
 885                 catc->last_stats = jiffies;
 886
 887                 dbg("Enabling.");
 888
 889                 catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
 890                 catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
 891                 catc_set_reg(catc, LEDCtrl, LEDLink);
 892                 catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
 893         } else {
 894                 dbg("Performing reset\n");
 895                 catc_reset(catc);
 896                 catc_get_mac(catc, netdev->dev_addr);
 897
 898                 dbg("Setting RX Mode");
 899                 catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
 900                 catc->rxmode[1] = 0;
 901                 f5u011_rxmode(catc, catc->rxmode);
 902         }
 903         dbg("Init done.");
 904         printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n",
 905                netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
 906                usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr);
 907         usb_set_intfdata(intf, catc);
 908
 909         SET_NETDEV_DEV(netdev, &intf->dev);
 910         if (register_netdev(netdev) != 0) {
 911                 usb_set_intfdata(intf, NULL);
 912                 usb_free_urb(catc->ctrl_urb);
 913                 usb_free_urb(catc->tx_urb);
 914                 usb_free_urb(catc->rx_urb);
 915                 usb_free_urb(catc->irq_urb);
 916                 free_netdev(netdev);
 917                 return -EIO;
 918         }
 919         return 0;
 920 }
 921
 922 static void catc_disconnect(struct usb_interface *intf)
 923 {
 924         struct catc *catc = usb_get_intfdata(intf);
 925
 926         usb_set_intfdata(intf, NULL);
 927         if (catc) {
 928                 unregister_netdev(catc->netdev);
 929                 usb_free_urb(catc->ctrl_urb);
 930                 usb_free_urb(catc->tx_urb);
 931                 usb_free_urb(catc->rx_urb);
 932                 usb_free_urb(catc->irq_urb);
 933                 free_netdev(catc->netdev);
 934         }
 935 }
 936
 937 /*
 938  * Module functions and tables.
 939  */
 940
 941 static struct usb_device_id catc_id_table [] = {
 942         { USB_DEVICE(0x0423, 0xa) },    /* CATC Netmate, Belkin F5U011 */
 943         { USB_DEVICE(0x0423, 0xc) },    /* CATC Netmate II, Belkin F5U111 */
 944         { USB_DEVICE(0x08d1, 0x1) },    /* smartBridges smartNIC */
 945         { }
 946 };
 947
 948 MODULE_DEVICE_TABLE(usb, catc_id_table);
 949
 950 static struct usb_driver catc_driver = {
 951         .name =         driver_name,
 952         .probe =        catc_probe,
 953         .disconnect =   catc_disconnect,
 954         .id_table =     catc_id_table,
 955         .disable_hub_initiated_lpm = 1,
 956 };
 957
 958 module_usb_driver(catc_driver);