drivers/usb/net/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, struct pt_regs *regs)
 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->dev = catc->netdev;
 259                 eth_copy_and_sum(skb, pkt_start + pkt_offset, pkt_len, 0);
 260                 skb_put(skb, pkt_len);
 261
 262                 skb->protocol = eth_type_trans(skb, catc->netdev);
 263                 netif_rx(skb);
 264
 265                 catc->stats.rx_packets++;
 266                 catc->stats.rx_bytes += pkt_len;
 267
 268                 /* F5U011 only does one packet per RX */
 269                 if (catc->is_f5u011)
 270                         break;
 271                 pkt_start += (((pkt_len + 1) >> 6) + 1) << 6;
 272
 273         } while (pkt_start - (u8 *) urb->transfer_buffer < urb->actual_length);
 274
 275         catc->netdev->last_rx = jiffies;
 276
 277         if (catc->is_f5u011) {
 278                 if (atomic_read(&catc->recq_sz)) {
 279                         int status;
 280                         atomic_dec(&catc->recq_sz);
 281                         dbg("getting extra packet");
 282                         urb->dev = catc->usbdev;
 283                         if ((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
 284                                 dbg("submit(rx_urb) status %d", status);
 285                         }
 286                 } else {
 287                         clear_bit(RX_RUNNING, &catc->flags);
 288                 }
 289         }
 290 }
 291
 292 static void catc_irq_done(struct urb *urb, struct pt_regs *regs)
 293 {
 294         struct catc *catc = urb->context;
 295         u8 *data = urb->transfer_buffer;
 296         int status;
 297         unsigned int hasdata = 0, linksts = LinkNoChange;
 298
 299         if (!catc->is_f5u011) {
 300                 hasdata = data[1] & 0x80;
 301                 if (data[1] & 0x40)
 302                         linksts = LinkGood;
 303                 else if (data[1] & 0x20)
 304                         linksts = LinkBad;
 305         } else {
 306                 hasdata = (unsigned int)(be16_to_cpup((__be16*)data) & 0x0fff);
 307                 if (data[0] == 0x90)
 308                         linksts = LinkGood;
 309                 else if (data[0] == 0xA0)
 310                         linksts = LinkBad;
 311         }
 312
 313         switch (urb->status) {
 314         case 0:                 /* success */
 315                 break;
 316         case -ECONNRESET:       /* unlink */
 317         case -ENOENT:
 318         case -ESHUTDOWN:
 319                 return;
 320         /* -EPIPE:  should clear the halt */
 321         default:                /* error */
 322                 dbg("irq_done, status %d, data %02x %02x.", urb->status, data[0], data[1]);
 323                 goto resubmit;
 324         }
 325
 326         if (linksts == LinkGood) {
 327                 netif_carrier_on(catc->netdev);
 328                 dbg("link ok");
 329         }
 330
 331         if (linksts == LinkBad) {
 332                 netif_carrier_off(catc->netdev);
 333                 dbg("link bad");
 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 ((status = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {
 343                                 err("submit(rx_urb) status %d", status);
 344                         }
 345                 }
 346         }
 347 resubmit:
 348         status = usb_submit_urb (urb, SLAB_ATOMIC);
 349         if (status)
 350                 err ("can't resubmit intr, %s-%s, status %d",
 351                                 catc->usbdev->bus->bus_name,
 352                                 catc->usbdev->devpath, status);
 353 }
 354
 355 /*
 356  * Transmit routines.
 357  */
 358
 359 static void 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                 err("submit(tx_urb), status %d", status);
 372
 373         catc->tx_idx = !catc->tx_idx;
 374         catc->tx_ptr = 0;
 375
 376         catc->netdev->trans_start = jiffies;
 377 }
 378
 379 static void catc_tx_done(struct urb *urb, struct pt_regs *regs)
 380 {
 381         struct catc *catc = urb->context;
 382         unsigned long flags;
 383
 384         if (urb->status == -ECONNRESET) {
 385                 dbg("Tx Reset.");
 386                 urb->status = 0;
 387                 catc->netdev->trans_start = jiffies;
 388                 catc->stats.tx_errors++;
 389                 clear_bit(TX_RUNNING, &catc->flags);
 390                 netif_wake_queue(catc->netdev);
 391                 return;
 392         }
 393
 394         if (urb->status) {
 395                 dbg("tx_done, status %d, length %d", urb->status, urb->actual_length);
 396                 return;
 397         }
 398
 399         spin_lock_irqsave(&catc->tx_lock, flags);
 400
 401         if (catc->tx_ptr)
 402                 catc_tx_run(catc);
 403         else
 404                 clear_bit(TX_RUNNING, &catc->flags);
 405
 406         netif_wake_queue(catc->netdev);
 407
 408         spin_unlock_irqrestore(&catc->tx_lock, flags);
 409 }
 410
 411 static int catc_hard_start_xmit(struct sk_buff *skb, struct net_device *netdev)
 412 {
 413         struct catc *catc = netdev_priv(netdev);
 414         unsigned long flags;
 415         char *tx_buf;
 416
 417         spin_lock_irqsave(&catc->tx_lock, flags);
 418
 419         catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
 420         tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
 421         *((u16*)tx_buf) = (catc->is_f5u011) ? cpu_to_be16((u16)skb->len) : cpu_to_le16((u16)skb->len);
 422         memcpy(tx_buf + 2, skb->data, skb->len);
 423         catc->tx_ptr += skb->len + 2;
 424
 425         if (!test_and_set_bit(TX_RUNNING, &catc->flags))
 426                 catc_tx_run(catc);
 427
 428         if ((catc->is_f5u011 && catc->tx_ptr)
 429              || (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
 430                 netif_stop_queue(netdev);
 431
 432         spin_unlock_irqrestore(&catc->tx_lock, flags);
 433
 434         catc->stats.tx_bytes += skb->len;
 435         catc->stats.tx_packets++;
 436
 437         dev_kfree_skb(skb);
 438
 439         return 0;
 440 }
 441
 442 static void catc_tx_timeout(struct net_device *netdev)
 443 {
 444         struct catc *catc = netdev_priv(netdev);
 445
 446         warn("Transmit timed out.");
 447         usb_unlink_urb(catc->tx_urb);
 448 }
 449
 450 /*
 451  * Control messages.
 452  */
 453
 454 static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
 455 {
 456         int retval = usb_control_msg(catc->usbdev,
 457                 dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),
 458                  request, 0x40 | dir, value, index, buf, len, 1000);
 459         return retval < 0 ? retval : 0;
 460 }
 461
 462 static void catc_ctrl_run(struct catc *catc)
 463 {
 464         struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;
 465         struct usb_device *usbdev = catc->usbdev;
 466         struct urb *urb = catc->ctrl_urb;
 467         struct usb_ctrlrequest *dr = &catc->ctrl_dr;
 468         int status;
 469
 470         dr->bRequest = q->request;
 471         dr->bRequestType = 0x40 | q->dir;
 472         dr->wValue = cpu_to_le16(q->value);
 473         dr->wIndex = cpu_to_le16(q->index);
 474         dr->wLength = cpu_to_le16(q->len);
 475
 476         urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);
 477         urb->transfer_buffer_length = q->len;
 478         urb->transfer_buffer = catc->ctrl_buf;
 479         urb->setup_packet = (void *) dr;
 480         urb->dev = usbdev;
 481
 482         if (!q->dir && q->buf && q->len)
 483                 memcpy(catc->ctrl_buf, q->buf, q->len);
 484
 485         if ((status = usb_submit_urb(catc->ctrl_urb, GFP_KERNEL)))
 486                 err("submit(ctrl_urb) status %d", status);
 487 }
 488
 489 static void catc_ctrl_done(struct urb *urb, struct pt_regs *regs)
 490 {
 491         struct catc *catc = urb->context;
 492         struct ctrl_queue *q;
 493         unsigned long flags;
 494
 495         if (urb->status)
 496                 dbg("ctrl_done, status %d, len %d.", urb->status, urb->actual_length);
 497
 498         spin_lock_irqsave(&catc->ctrl_lock, flags);
 499
 500         q = catc->ctrl_queue + catc->ctrl_tail;
 501
 502         if (q->dir) {
 503                 if (q->buf && q->len)
 504                         memcpy(q->buf, catc->ctrl_buf, q->len);
 505                 else
 506                         q->buf = catc->ctrl_buf;
 507         }
 508
 509         if (q->callback)
 510                 q->callback(catc, q);
 511
 512         catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
 513
 514         if (catc->ctrl_head != catc->ctrl_tail)
 515                 catc_ctrl_run(catc);
 516         else
 517                 clear_bit(CTRL_RUNNING, &catc->flags);
 518
 519         spin_unlock_irqrestore(&catc->ctrl_lock, flags);
 520 }
 521
 522 static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,
 523         u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))
 524 {
 525         struct ctrl_queue *q;
 526         int retval = 0;
 527         unsigned long flags;
 528
 529         spin_lock_irqsave(&catc->ctrl_lock, flags);
 530
 531         q = catc->ctrl_queue + catc->ctrl_head;
 532
 533         q->dir = dir;
 534         q->request = request;
 535         q->value = value;
 536         q->index = index;
 537         q->buf = buf;
 538         q->len = len;
 539         q->callback = callback;
 540
 541         catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);
 542
 543         if (catc->ctrl_head == catc->ctrl_tail) {
 544                 err("ctrl queue full");
 545                 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
 546                 retval = -1;
 547         }
 548
 549         if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))
 550                 catc_ctrl_run(catc);
 551
 552         spin_unlock_irqrestore(&catc->ctrl_lock, flags);
 553
 554         return retval;
 555 }
 556
 557 /*
 558  * Statistics.
 559  */
 560
 561 static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)
 562 {
 563         int index = q->index - EthStats;
 564         u16 data, last;
 565
 566         catc->stats_buf[index] = *((char *)q->buf);
 567
 568         if (index & 1)
 569                 return;
 570
 571         data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];
 572         last = catc->stats_vals[index >> 1];
 573
 574         switch (index) {
 575                 case TxSingleColl:
 576                 case TxMultiColl:
 577                         catc->stats.collisions += data - last;
 578                         break;
 579                 case TxExcessColl:
 580                         catc->stats.tx_aborted_errors += data - last;
 581                         catc->stats.tx_errors += data - last;
 582                         break;
 583                 case RxFramErr:
 584                         catc->stats.rx_frame_errors += data - last;
 585                         catc->stats.rx_errors += data - last;
 586                         break;
 587         }
 588
 589         catc->stats_vals[index >> 1] = data;
 590 }
 591
 592 static void catc_stats_timer(unsigned long data)
 593 {
 594         struct catc *catc = (void *) data;
 595         int i;
 596
 597         for (i = 0; i < 8; i++)
 598                 catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);
 599
 600         mod_timer(&catc->timer, jiffies + STATS_UPDATE);
 601 }
 602
 603 static struct net_device_stats *catc_get_stats(struct net_device *netdev)
 604 {
 605         struct catc *catc = netdev_priv(netdev);
 606         return &catc->stats;
 607 }
 608
 609 /*
 610  * Receive modes. Broadcast, Multicast, Promisc.
 611  */
 612
 613 static void catc_multicast(unsigned char *addr, u8 *multicast)
 614 {
 615         u32 crc;
 616
 617         crc = ether_crc_le(6, addr);
 618         multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
 619 }
 620
 621 static void catc_set_multicast_list(struct net_device *netdev)
 622 {
 623         struct catc *catc = netdev_priv(netdev);
 624         struct dev_mc_list *mc;
 625         u8 broadcast[6];
 626         u8 rx = RxEnable | RxPolarity | RxMultiCast;
 627         int i;
 628
 629         memset(broadcast, 0xff, 6);
 630         memset(catc->multicast, 0, 64);
 631
 632         catc_multicast(broadcast, catc->multicast);
 633         catc_multicast(netdev->dev_addr, catc->multicast);
 634
 635         if (netdev->flags & IFF_PROMISC) {
 636                 memset(catc->multicast, 0xff, 64);
 637                 rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;
 638         }
 639
 640         if (netdev->flags & IFF_ALLMULTI) {
 641                 memset(catc->multicast, 0xff, 64);
 642         } else {
 643                 for (i = 0, mc = netdev->mc_list; mc && i < netdev->mc_count; i++, mc = mc->next) {
 644                         u32 crc = ether_crc_le(6, mc->dmi_addr);
 645                         if (!catc->is_f5u011) {
 646                                 catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
 647                         } else {
 648                                 catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);
 649                         }
 650                 }
 651         }
 652         if (!catc->is_f5u011) {
 653                 catc_set_reg_async(catc, RxUnit, rx);
 654                 catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);
 655         } else {
 656                 f5u011_mchash_async(catc, catc->multicast);
 657                 if (catc->rxmode[0] != rx) {
 658                         catc->rxmode[0] = rx;
 659                         dbg("Setting RX mode to %2.2X %2.2X", catc->rxmode[0], catc->rxmode[1]);
 660                         f5u011_rxmode_async(catc, catc->rxmode);
 661                 }
 662         }
 663 }
 664
 665 static void catc_get_drvinfo(struct net_device *dev,
 666                              struct ethtool_drvinfo *info)
 667 {
 668         struct catc *catc = netdev_priv(dev);
 669         strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
 670         strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
 671         usb_make_path (catc->usbdev, info->bus_info, sizeof info->bus_info);
 672 }
 673
 674 static int catc_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 675 {
 676         struct catc *catc = netdev_priv(dev);
 677         if (!catc->is_f5u011)
 678                 return -EOPNOTSUPP;
 679
 680         cmd->supported = SUPPORTED_10baseT_Half | SUPPORTED_TP;
 681         cmd->advertising = ADVERTISED_10baseT_Half | ADVERTISED_TP;
 682         cmd->speed = SPEED_10;
 683         cmd->duplex = DUPLEX_HALF;
 684         cmd->port = PORT_TP;
 685         cmd->phy_address = 0;
 686         cmd->transceiver = XCVR_INTERNAL;
 687         cmd->autoneg = AUTONEG_DISABLE;
 688         cmd->maxtxpkt = 1;
 689         cmd->maxrxpkt = 1;
 690         return 0;
 691 }
 692
 693 static struct ethtool_ops ops = {
 694         .get_drvinfo = catc_get_drvinfo,
 695         .get_settings = catc_get_settings,
 696         .get_link = ethtool_op_get_link
 697 };
 698
 699 /*
 700  * Open, close.
 701  */
 702
 703 static int catc_open(struct net_device *netdev)
 704 {
 705         struct catc *catc = netdev_priv(netdev);
 706         int status;
 707
 708         catc->irq_urb->dev = catc->usbdev;
 709         if ((status = usb_submit_urb(catc->irq_urb, GFP_KERNEL)) < 0) {
 710                 err("submit(irq_urb) status %d", status);
 711                 return -1;
 712         }
 713
 714         netif_start_queue(netdev);
 715
 716         if (!catc->is_f5u011)
 717                 mod_timer(&catc->timer, jiffies + STATS_UPDATE);
 718
 719         return 0;
 720 }
 721
 722 static int catc_stop(struct net_device *netdev)
 723 {
 724         struct catc *catc = netdev_priv(netdev);
 725
 726         netif_stop_queue(netdev);
 727
 728         if (!catc->is_f5u011)
 729                 del_timer_sync(&catc->timer);
 730
 731         usb_kill_urb(catc->rx_urb);
 732         usb_kill_urb(catc->tx_urb);
 733         usb_kill_urb(catc->irq_urb);
 734         usb_kill_urb(catc->ctrl_urb);
 735
 736         return 0;
 737 }
 738
 739 /*
 740  * USB probe, disconnect.
 741  */
 742
 743 static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)
 744 {
 745         struct usb_device *usbdev = interface_to_usbdev(intf);
 746         struct net_device *netdev;
 747         struct catc *catc;
 748         u8 broadcast[6];
 749         int i, pktsz;
 750
 751         if (usb_set_interface(usbdev,
 752                         intf->altsetting->desc.bInterfaceNumber, 1)) {
 753                 err("Can't set altsetting 1.");
 754                 return -EIO;
 755         }
 756
 757         netdev = alloc_etherdev(sizeof(struct catc));
 758         if (!netdev)
 759                 return -ENOMEM;
 760
 761         catc = netdev_priv(netdev);
 762
 763         netdev->open = catc_open;
 764         netdev->hard_start_xmit = catc_hard_start_xmit;
 765         netdev->stop = catc_stop;
 766         netdev->get_stats = catc_get_stats;
 767         netdev->tx_timeout = catc_tx_timeout;
 768         netdev->watchdog_timeo = TX_TIMEOUT;
 769         netdev->set_multicast_list = catc_set_multicast_list;
 770         SET_ETHTOOL_OPS(netdev, &ops);
 771
 772         catc->usbdev = usbdev;
 773         catc->netdev = netdev;
 774
 775         spin_lock_init(&catc->tx_lock);
 776         spin_lock_init(&catc->ctrl_lock);
 777
 778         init_timer(&catc->timer);
 779         catc->timer.data = (long) catc;
 780         catc->timer.function = catc_stats_timer;
 781
 782         catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
 783         catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
 784         catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
 785         catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
 786         if ((!catc->ctrl_urb) || (!catc->tx_urb) ||
 787             (!catc->rx_urb) || (!catc->irq_urb)) {
 788                 err("No free urbs available.");
 789                 if (catc->ctrl_urb)
 790                         usb_free_urb(catc->ctrl_urb);
 791                 if (catc->tx_urb)
 792                         usb_free_urb(catc->tx_urb);
 793                 if (catc->rx_urb)
 794                         usb_free_urb(catc->rx_urb);
 795                 if (catc->irq_urb)
 796                         usb_free_urb(catc->irq_urb);
 797                 free_netdev(netdev);
 798                 return -ENOMEM;
 799         }
 800
 801         /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
 802         if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 &&
 803             le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
 804             le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
 805                 dbg("Testing for f5u011");
 806                 catc->is_f5u011 = 1;
 807                 atomic_set(&catc->recq_sz, 0);
 808                 pktsz = RX_PKT_SZ;
 809         } else {
 810                 pktsz = RX_MAX_BURST * (PKT_SZ + 2);
 811         }
 812
 813         usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
 814                 NULL, NULL, 0, catc_ctrl_done, catc);
 815
 816         usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
 817                 NULL, 0, catc_tx_done, catc);
 818
 819         usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
 820                 catc->rx_buf, pktsz, catc_rx_done, catc);
 821
 822         usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
 823                 catc->irq_buf, 2, catc_irq_done, catc, 1);
 824
 825         if (!catc->is_f5u011) {
 826                 dbg("Checking memory size\n");
 827
 828                 i = 0x12345678;
 829                 catc_write_mem(catc, 0x7a80, &i, 4);
 830                 i = 0x87654321;
 831                 catc_write_mem(catc, 0xfa80, &i, 4);
 832                 catc_read_mem(catc, 0x7a80, &i, 4);
 833
 834                 switch (i) {
 835                 case 0x12345678:
 836                         catc_set_reg(catc, TxBufCount, 8);
 837                         catc_set_reg(catc, RxBufCount, 32);
 838                         dbg("64k Memory\n");
 839                         break;
 840                 default:
 841                         warn("Couldn't detect memory size, assuming 32k");
 842                 case 0x87654321:
 843                         catc_set_reg(catc, TxBufCount, 4);
 844                         catc_set_reg(catc, RxBufCount, 16);
 845                         dbg("32k Memory\n");
 846                         break;
 847                 }
 848
 849                 dbg("Getting MAC from SEEROM.");
 850
 851                 catc_get_mac(catc, netdev->dev_addr);
 852
 853                 dbg("Setting MAC into registers.");
 854
 855                 for (i = 0; i < 6; i++)
 856                         catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
 857
 858                 dbg("Filling the multicast list.");
 859
 860                 memset(broadcast, 0xff, 6);
 861                 catc_multicast(broadcast, catc->multicast);
 862                 catc_multicast(netdev->dev_addr, catc->multicast);
 863                 catc_write_mem(catc, 0xfa80, catc->multicast, 64);
 864
 865                 dbg("Clearing error counters.");
 866
 867                 for (i = 0; i < 8; i++)
 868                         catc_set_reg(catc, EthStats + i, 0);
 869                 catc->last_stats = jiffies;
 870
 871                 dbg("Enabling.");
 872
 873                 catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
 874                 catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
 875                 catc_set_reg(catc, LEDCtrl, LEDLink);
 876                 catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
 877         } else {
 878                 dbg("Performing reset\n");
 879                 catc_reset(catc);
 880                 catc_get_mac(catc, netdev->dev_addr);
 881
 882                 dbg("Setting RX Mode");
 883                 catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
 884                 catc->rxmode[1] = 0;
 885                 f5u011_rxmode(catc, catc->rxmode);
 886         }
 887         dbg("Init done.");
 888         printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, ",
 889                netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
 890                usbdev->bus->bus_name, usbdev->devpath);
 891         for (i = 0; i < 5; i++) printk("%2.2x:", netdev->dev_addr[i]);
 892         printk("%2.2x.\n", netdev->dev_addr[i]);
 893         usb_set_intfdata(intf, catc);
 894
 895         SET_NETDEV_DEV(netdev, &intf->dev);
 896         if (register_netdev(netdev) != 0) {
 897                 usb_set_intfdata(intf, NULL);
 898                 usb_free_urb(catc->ctrl_urb);
 899                 usb_free_urb(catc->tx_urb);
 900                 usb_free_urb(catc->rx_urb);
 901                 usb_free_urb(catc->irq_urb);
 902                 free_netdev(netdev);
 903                 return -EIO;
 904         }
 905         return 0;
 906 }
 907
 908 static void catc_disconnect(struct usb_interface *intf)
 909 {
 910         struct catc *catc = usb_get_intfdata(intf);
 911
 912         usb_set_intfdata(intf, NULL);
 913         if (catc) {
 914                 unregister_netdev(catc->netdev);
 915                 usb_free_urb(catc->ctrl_urb);
 916                 usb_free_urb(catc->tx_urb);
 917                 usb_free_urb(catc->rx_urb);
 918                 usb_free_urb(catc->irq_urb);
 919                 free_netdev(catc->netdev);
 920         }
 921 }
 922
 923 /*
 924  * Module functions and tables.
 925  */
 926
 927 static struct usb_device_id catc_id_table [] = {
 928         { USB_DEVICE(0x0423, 0xa) },    /* CATC Netmate, Belkin F5U011 */
 929         { USB_DEVICE(0x0423, 0xc) },    /* CATC Netmate II, Belkin F5U111 */
 930         { USB_DEVICE(0x08d1, 0x1) },    /* smartBridges smartNIC */
 931         { }
 932 };
 933
 934 MODULE_DEVICE_TABLE(usb, catc_id_table);
 935
 936 static struct usb_driver catc_driver = {
 937         .owner =        THIS_MODULE,
 938         .name =         driver_name,
 939         .probe =        catc_probe,
 940         .disconnect =   catc_disconnect,
 941         .id_table =     catc_id_table,
 942 };
 943
 944 static int __init catc_init(void)
 945 {
 946         int result = usb_register(&catc_driver);
 947         if (result == 0)
 948                 info(DRIVER_VERSION " " DRIVER_DESC);
 949         return result;
 950 }
 951
 952 static void __exit catc_exit(void)
 953 {
 954         usb_deregister(&catc_driver);
 955 }
 956
 957 module_init(catc_init);
 958 module_exit(catc_exit);