drivers/usb/catc.c

   1 /*
   2  *  Copyright (c) 2001 Vojtech Pavlik
   3  *
   4  *  CATC EL1210A NetMate USB Ethernet driver
   5  *
   6  *  Sponsored by SuSE
   7  *
   8  *  Based on the work of
   9  *              Donald Becker
  10  *
  11  *  Old chipset support added by Simon Evans <spse@secret.org.uk> 2002
  12  *    - adds support for Belkin F5U011
  13  */
  14
  15 /*
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  29  *
  30  * Should you need to contact me, the author, you can do so either by
  31  * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
  32  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  33  */
  34
  35 #include <linux/init.h>
  36 #include <linux/module.h>
  37 #include <linux/kernel.h>
  38 #include <linux/string.h>
  39 #include <linux/slab.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/skbuff.h>
  43 #include <linux/spinlock.h>
  44 #include <linux/ethtool.h>
  45 #include <linux/crc32.h>
  46 #include <asm/bitops.h>
  47 #include <asm/uaccess.h>
  48
  49 #undef DEBUG
  50
  51 #include <linux/usb.h>
  52
  53 /*
  54  * Version information.
  55  */
  56
  57 #define DRIVER_VERSION "v2.8"
  58 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>"
  59 #define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver"
  60 #define SHORT_DRIVER_DESC "EL1210A NetMate USB Ethernet"
  61
  62 MODULE_AUTHOR(DRIVER_AUTHOR);
  63 MODULE_DESCRIPTION(DRIVER_DESC);
  64 MODULE_LICENSE("GPL");
  65
  66 static const char driver_name[] = "catc";
  67
  68 /*
  69  * Some defines.
  70  */
  71
  72 #define STATS_UPDATE            (HZ)    /* Time between stats updates */
  73 #define TX_TIMEOUT              (5*HZ)  /* Max time the queue can be stopped */
  74 #define PKT_SZ                  1536    /* Max Ethernet packet size */
  75 #define RX_MAX_BURST            15      /* Max packets per rx buffer (> 0, < 16) */
  76 #define TX_MAX_BURST            15      /* Max full sized packets per tx buffer (> 0) */
  77 #define CTRL_QUEUE              16      /* Max control requests in flight (power of two) */
  78 #define RX_PKT_SZ               1600    /* Max size of receive packet for F5U011 */
  79
  80 /*
  81  * Control requests.
  82  */
  83
  84 enum control_requests {
  85         ReadMem =       0xf1,
  86         GetMac =        0xf2,
  87         Reset =         0xf4,
  88         SetMac =        0xf5,
  89         SetRxMode =     0xf5,  /* F5U011 only */
  90         WriteROM =      0xf8,
  91         SetReg =        0xfa,
  92         GetReg =        0xfb,
  93         WriteMem =      0xfc,
  94         ReadROM =       0xfd,
  95 };
  96
  97 /*
  98  * Registers.
  99  */
 100
 101 enum register_offsets {
 102         TxBufCount =    0x20,
 103         RxBufCount =    0x21,
 104         OpModes =       0x22,
 105         TxQed =         0x23,
 106         RxQed =         0x24,
 107         MaxBurst =      0x25,
 108         RxUnit =        0x60,
 109         EthStatus =     0x61,
 110         StationAddr0 =  0x67,
 111         EthStats =      0x69,
 112         LEDCtrl =       0x81,
 113 };
 114
 115 enum eth_stats {
 116         TxSingleColl =  0x00,
 117         TxMultiColl =   0x02,
 118         TxExcessColl =  0x04,
 119         RxFramErr =     0x06,
 120 };
 121
 122 enum op_mode_bits {
 123         Op3MemWaits =   0x03,
 124         OpLenInclude =  0x08,
 125         OpRxMerge =     0x10,
 126         OpTxMerge =     0x20,
 127         OpWin95bugfix = 0x40,
 128         OpLoopback =    0x80,
 129 };
 130
 131 enum rx_filter_bits {
 132         RxEnable =      0x01,
 133         RxPolarity =    0x02,
 134         RxForceOK =     0x04,
 135         RxMultiCast =   0x08,
 136         RxPromisc =     0x10,
 137         AltRxPromisc =  0x20, /* F5U011 uses different bit */
 138 };
 139
 140 enum led_values {
 141         LEDFast =       0x01,
 142         LEDSlow =       0x02,
 143         LEDFlash =      0x03,
 144         LEDPulse =      0x04,
 145         LEDLink =       0x08,
 146 };
 147
 148 enum link_status {
 149         LinkNoChange = 0,
 150         LinkGood     = 1,
 151         LinkBad      = 2
 152 };
 153
 154 /*
 155  * The catc struct.
 156  */
 157
 158 #define CTRL_RUNNING    0
 159 #define RX_RUNNING      1
 160 #define TX_RUNNING      2
 161
 162 struct catc {
 163         struct net_device *netdev;
 164         struct usb_device *usbdev;
 165
 166         struct net_device_stats stats;
 167         unsigned long flags;
 168
 169         unsigned int tx_ptr, tx_idx;
 170         unsigned int ctrl_head, ctrl_tail;
 171         spinlock_t tx_lock, ctrl_lock;
 172
 173         u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)];
 174         u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)];
 175         u8 irq_buf[2];
 176         u8 ctrl_buf[64];
 177         struct usb_ctrlrequest ctrl_dr;
 178
 179         struct timer_list timer;
 180         u8 stats_buf[8];
 181         u16 stats_vals[4];
 182         unsigned long last_stats;
 183
 184         u8 multicast[64];
 185
 186         struct ctrl_queue {
 187                 u8 dir;
 188                 u8 request;
 189                 u16 value;
 190                 u16 index;
 191                 void *buf;
 192                 int len;
 193                 void (*callback)(struct catc *catc, struct ctrl_queue *q);
 194         } ctrl_queue[CTRL_QUEUE];
 195
 196         struct urb tx_urb, rx_urb, irq_urb, ctrl_urb;
 197
 198         u8 is_f5u011;   /* Set if device is an F5U011 */
 199         u8 rxmode[2];   /* Used for F5U011 */
 200         atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */
 201 };
 202
 203 /*
 204  * Useful macros.
 205  */
 206
 207 #define catc_get_mac(catc, mac)                         catc_ctrl_msg(catc, USB_DIR_IN,  GetMac, 0, 0, mac,  6)
 208 #define catc_reset(catc)                                catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0)
 209 #define catc_set_reg(catc, reg, val)                    catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0)
 210 #define catc_get_reg(catc, reg, buf)                    catc_ctrl_msg(catc, USB_DIR_IN,  GetReg, 0, reg, buf, 1)
 211 #define catc_write_mem(catc, addr, buf, size)           catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size)
 212 #define catc_read_mem(catc, addr, buf, size)            catc_ctrl_msg(catc, USB_DIR_IN,  ReadMem, 0, addr, buf, size)
 213
 214 #define f5u011_rxmode(catc, rxmode)                     catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2)
 215 #define f5u011_rxmode_async(catc, rxmode)               catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL)
 216 #define f5u011_mchash_async(catc, hash)                 catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL)
 217
 218 #define catc_set_reg_async(catc, reg, val)              catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL)
 219 #define catc_get_reg_async(catc, reg, cb)               catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb)
 220 #define catc_write_mem_async(catc, addr, buf, size)     catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL)
 221
 222 /*
 223  * Receive routines.
 224  */
 225
 226 static void catc_rx_done(struct urb *urb)
 227 {
 228         struct catc *catc = urb->context;
 229         u8 *pkt_start = urb->transfer_buffer;
 230         struct sk_buff *skb;
 231         int pkt_len, pkt_offset = 0;
 232
 233         if (!catc->is_f5u011) {
 234                 clear_bit(RX_RUNNING, &catc->flags);
 235                 pkt_offset = 2;
 236         }
 237
 238         if (urb->status) {
 239                 dbg("rx_done, status %d, length %d", urb->status, urb->actual_length);
 240                 return;
 241         }
 242
 243         do {
 244                 if(!catc->is_f5u011) {
 245                         pkt_len = le16_to_cpup((u16*)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)) < 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)
 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((u16*)data) & 0x0fff);
 307                 if (data[0] == 0x90)
 308                         linksts = LinkGood;
 309                 else if (data[0] == 0xA0)
 310                         linksts = LinkBad;
 311         }
 312
 313         if (urb->status) {
 314                 dbg("irq_done, status %d, data %02x %02x.", urb->status, data[0], data[1]);
 315                 return;
 316         }
 317
 318         if (linksts == LinkGood) {
 319                 netif_carrier_on(catc->netdev);
 320                 dbg("link ok");
 321         }
 322
 323         if (linksts == LinkBad) {
 324                 netif_carrier_off(catc->netdev);
 325                 dbg("link bad");
 326         }
 327
 328         if (hasdata) {
 329                 if (test_and_set_bit(RX_RUNNING, &catc->flags)) {
 330                         if (catc->is_f5u011)
 331                                 atomic_inc(&catc->recq_sz);
 332                 } else {
 333                         catc->rx_urb.dev = catc->usbdev;
 334                         if ((status = usb_submit_urb(&catc->rx_urb)) < 0) {
 335                                 err("submit(rx_urb) status %d", status);
 336                         }
 337                 }
 338         }
 339 }
 340
 341 /*
 342  * Transmit routines.
 343  */
 344
 345 static void catc_tx_run(struct catc *catc)
 346 {
 347         int status;
 348
 349         if (catc->is_f5u011)
 350                 catc->tx_ptr = (catc->tx_ptr + 63) & ~63;
 351
 352         catc->tx_urb.transfer_buffer_length = catc->tx_ptr;
 353         catc->tx_urb.transfer_buffer = catc->tx_buf[catc->tx_idx];
 354         catc->tx_urb.dev = catc->usbdev;
 355
 356         if ((status = usb_submit_urb(&catc->tx_urb)) < 0)
 357                 err("submit(tx_urb), status %d", status);
 358
 359         catc->tx_idx = !catc->tx_idx;
 360         catc->tx_ptr = 0;
 361
 362         catc->netdev->trans_start = jiffies;
 363 }
 364
 365 static void catc_tx_done(struct urb *urb)
 366 {
 367         struct catc *catc = urb->context;
 368         unsigned long flags;
 369
 370         if (urb->status == -ECONNRESET) {
 371                 dbg("Tx Reset.");
 372                 urb->transfer_flags &= ~USB_ASYNC_UNLINK;
 373                 urb->status = 0;
 374                 catc->netdev->trans_start = jiffies;
 375                 catc->stats.tx_errors++;
 376                 clear_bit(TX_RUNNING, &catc->flags);
 377                 netif_wake_queue(catc->netdev);
 378                 return;
 379         }
 380
 381         if (urb->status) {
 382                 dbg("tx_done, status %d, length %d", urb->status, urb->actual_length);
 383                 return;
 384         }
 385
 386         spin_lock_irqsave(&catc->tx_lock, flags);
 387
 388         if (catc->tx_ptr)
 389                 catc_tx_run(catc);
 390         else
 391                 clear_bit(TX_RUNNING, &catc->flags);
 392
 393         netif_wake_queue(catc->netdev);
 394
 395         spin_unlock_irqrestore(&catc->tx_lock, flags);
 396 }
 397
 398 static int catc_hard_start_xmit(struct sk_buff *skb, struct net_device *netdev)
 399 {
 400         struct catc *catc = netdev->priv;
 401         unsigned long flags;
 402         char *tx_buf;
 403
 404         spin_lock_irqsave(&catc->tx_lock, flags);
 405
 406         catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
 407         tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
 408         *((u16*)tx_buf) = (catc->is_f5u011) ?
 409                 cpu_to_be16((u16)skb->len) : cpu_to_le16((u16)skb->len);
 410         memcpy(tx_buf + 2, skb->data, skb->len);
 411         catc->tx_ptr += skb->len + 2;
 412
 413         if (!test_and_set_bit(TX_RUNNING, &catc->flags))
 414                 catc_tx_run(catc);
 415
 416         if ((catc->is_f5u011 && catc->tx_ptr)
 417              || (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
 418                 netif_stop_queue(netdev);
 419
 420         spin_unlock_irqrestore(&catc->tx_lock, flags);
 421
 422         catc->stats.tx_bytes += skb->len;
 423         catc->stats.tx_packets++;
 424
 425         dev_kfree_skb(skb);
 426
 427         return 0;
 428 }
 429
 430 static void catc_tx_timeout(struct net_device *netdev)
 431 {
 432         struct catc *catc = netdev->priv;
 433
 434         warn("Transmit timed out.");
 435         catc->tx_urb.transfer_flags |= USB_ASYNC_UNLINK;
 436         usb_unlink_urb(&catc->tx_urb);
 437 }
 438
 439 /*
 440  * Control messages.
 441  */
 442
 443 static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
 444 {
 445         int retval = usb_control_msg(catc->usbdev,
 446                 dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),
 447                  request, 0x40 | dir, value, index, buf, len, HZ);
 448         return retval < 0 ? retval : 0;
 449 }
 450
 451 static void catc_ctrl_run(struct catc *catc)
 452 {
 453         struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;
 454         struct usb_device *usbdev = catc->usbdev;
 455         struct urb *urb = &catc->ctrl_urb;
 456         struct usb_ctrlrequest *dr = &catc->ctrl_dr;
 457         int status;
 458
 459         dr->bRequest = q->request;
 460         dr->bRequestType = 0x40 | q->dir;
 461         dr->wValue = cpu_to_le16(q->value);
 462         dr->wIndex = cpu_to_le16(q->index);
 463         dr->wLength = cpu_to_le16(q->len);
 464
 465         urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);
 466         urb->transfer_buffer_length = q->len;
 467         urb->transfer_buffer = catc->ctrl_buf;
 468         urb->setup_packet = (void *) dr;
 469         urb->dev = usbdev;
 470
 471         if (!q->dir && q->buf && q->len)
 472                 memcpy(catc->ctrl_buf, q->buf, q->len);
 473
 474         if ((status = usb_submit_urb(&catc->ctrl_urb)))
 475                 err("submit(ctrl_urb) status %d", status);
 476 }
 477
 478 static void catc_ctrl_done(struct urb *urb)
 479 {
 480         struct catc *catc = urb->context;
 481         struct ctrl_queue *q;
 482         unsigned long flags;
 483
 484         if (urb->status)
 485                 dbg("ctrl_done, status %d, len %d.", urb->status, urb->actual_length);
 486
 487         spin_lock_irqsave(&catc->ctrl_lock, flags);
 488
 489         q = catc->ctrl_queue + catc->ctrl_tail;
 490
 491         if (q->dir) {
 492                 if (q->buf && q->len)
 493                         memcpy(q->buf, catc->ctrl_buf, q->len);
 494                 else
 495                         q->buf = catc->ctrl_buf;
 496         }
 497
 498         if (q->callback)
 499                 q->callback(catc, q);
 500
 501         catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
 502
 503         if (catc->ctrl_head != catc->ctrl_tail)
 504                 catc_ctrl_run(catc);
 505         else
 506                 clear_bit(CTRL_RUNNING, &catc->flags);
 507
 508         spin_unlock_irqrestore(&catc->ctrl_lock, flags);
 509 }
 510
 511 static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,
 512         u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))
 513 {
 514         struct ctrl_queue *q;
 515         int retval = 0;
 516         unsigned long flags;
 517
 518         spin_lock_irqsave(&catc->ctrl_lock, flags);
 519
 520         q = catc->ctrl_queue + catc->ctrl_head;
 521
 522         q->dir = dir;
 523         q->request = request;
 524         q->value = value;
 525         q->index = index;
 526         q->buf = buf;
 527         q->len = len;
 528         q->callback = callback;
 529
 530         catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);
 531
 532         if (catc->ctrl_head == catc->ctrl_tail) {
 533                 err("ctrl queue full");
 534                 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
 535                 retval = -1;
 536         }
 537
 538         if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))
 539                 catc_ctrl_run(catc);
 540
 541         spin_unlock_irqrestore(&catc->ctrl_lock, flags);
 542
 543         return retval;
 544 }
 545
 546 /*
 547  * Statistics.
 548  */
 549
 550 static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)
 551 {
 552         int index = q->index - EthStats;
 553         u16 data, last;
 554
 555         catc->stats_buf[index] = *((char *)q->buf);
 556
 557         if (index & 1)
 558                 return;
 559
 560         data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];
 561         last = catc->stats_vals[index >> 1];
 562
 563         switch (index) {
 564                 case TxSingleColl:
 565                 case TxMultiColl:
 566                         catc->stats.collisions += data - last;
 567                         break;
 568                 case TxExcessColl:
 569                         catc->stats.tx_aborted_errors += data - last;
 570                         catc->stats.tx_errors += data - last;
 571                         break;
 572                 case RxFramErr:
 573                         catc->stats.rx_frame_errors += data - last;
 574                         catc->stats.rx_errors += data - last;
 575                         break;
 576         }
 577
 578         catc->stats_vals[index >> 1] = data;
 579 }
 580
 581 static void catc_stats_timer(unsigned long data)
 582 {
 583         struct catc *catc = (void *) data;
 584         int i;
 585
 586         for (i = 0; i < 8; i++)
 587                 catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);
 588
 589         mod_timer(&catc->timer, jiffies + STATS_UPDATE);
 590 }
 591
 592 static struct net_device_stats *catc_get_stats(struct net_device *netdev)
 593 {
 594         struct catc *catc = netdev->priv;
 595         return &catc->stats;
 596 }
 597
 598 /*
 599  * Receive modes. Broadcast, Multicast, Promisc.
 600  */
 601
 602 static void catc_multicast(unsigned char *addr, u8 *multicast)
 603 {
 604         u32 crc = ether_crc_le(6, addr);
 605         multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
 606 }
 607
 608 static void catc_set_multicast_list(struct net_device *netdev)
 609 {
 610         struct catc *catc = netdev->priv;
 611         struct dev_mc_list *mc;
 612         u8 broadcast[6];
 613         u8 rx = RxEnable | RxPolarity | RxMultiCast;
 614         int i;
 615
 616         memset(broadcast, 0xff, 6);
 617         memset(catc->multicast, 0, 64);
 618
 619         catc_multicast(broadcast, catc->multicast);
 620         catc_multicast(netdev->dev_addr, catc->multicast);
 621
 622         if (netdev->flags & IFF_PROMISC) {
 623                 memset(catc->multicast, 0xff, 64);
 624                 rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;
 625         }
 626
 627         if (netdev->flags & IFF_ALLMULTI) {
 628                 memset(catc->multicast, 0xff, 64);
 629         } else {
 630                 for (i = 0, mc = netdev->mc_list; mc && i < netdev->mc_count; i++, mc = mc->next) {
 631                         u32 crc = ether_crc_le(6, mc->dmi_addr);
 632                         if (!catc->is_f5u011) {
 633                                 catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
 634                         } else {
 635                                 catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);
 636                         }
 637                 }
 638         }
 639         if (!catc->is_f5u011) {
 640                 catc_set_reg_async(catc, RxUnit, rx);
 641                 catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);
 642         } else {
 643                 f5u011_mchash_async(catc, catc->multicast);
 644                 if (catc->rxmode[0] != rx) {
 645                         catc->rxmode[0] = rx;
 646                         dbg("Setting RX mode to %2.2X %2.2X", catc->rxmode[0],
 647                             catc->rxmode[1]);
 648                         f5u011_rxmode_async(catc, catc->rxmode);
 649                 }
 650         }
 651 }
 652
 653 /*
 654  * ioctl's
 655  */
 656 static int netdev_ethtool_ioctl(struct net_device *dev, void *useraddr)
 657 {
 658         struct catc *catc = dev->priv;
 659         u32 cmd;
 660         char tmp[40];
 661
 662         if (get_user(cmd, (u32 *)useraddr))
 663                 return -EFAULT;
 664
 665         switch (cmd) {
 666         /* get driver info */
 667         case ETHTOOL_GDRVINFO: {
 668                 struct ethtool_drvinfo info = {ETHTOOL_GDRVINFO};
 669                 strncpy(info.driver, driver_name, ETHTOOL_BUSINFO_LEN);
 670                 strncpy(info.version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
 671                 sprintf(tmp, "usb%d:%d", catc->usbdev->bus->busnum, catc->usbdev->devnum);
 672                 strncpy(info.bus_info, tmp,ETHTOOL_BUSINFO_LEN);
 673                 if (copy_to_user(useraddr, &info, sizeof(info)))
 674                         return -EFAULT;
 675                 return 0;
 676         }
 677
 678         /* get settings */
 679         case ETHTOOL_GSET:
 680                 if (catc->is_f5u011) {
 681                         struct ethtool_cmd ecmd = {
 682                                 ETHTOOL_GSET,
 683                                 SUPPORTED_10baseT_Half | SUPPORTED_TP,
 684                                 ADVERTISED_10baseT_Half | ADVERTISED_TP,
 685                                 SPEED_10,
 686                                 DUPLEX_HALF,
 687                                 PORT_TP,
 688                                 0,
 689                                 XCVR_INTERNAL,
 690                                 AUTONEG_DISABLE,
 691                                 1,
 692                                 1
 693                         };
 694                         if (copy_to_user(useraddr, &ecmd, sizeof(ecmd)))
 695                                 return -EFAULT;
 696                         return 0;
 697                 } else {
 698                         return -EOPNOTSUPP;
 699                 }
 700
 701         /* get link status */
 702         case ETHTOOL_GLINK: {
 703                 struct ethtool_value edata = {ETHTOOL_GLINK};
 704                 edata.data = netif_carrier_ok(dev);
 705                 if (copy_to_user(useraddr, &edata, sizeof(edata)))
 706                         return -EFAULT;
 707                 return 0;
 708         }
 709         }
 710         /* Note that the ethtool user space code requires EOPNOTSUPP */
 711         return -EOPNOTSUPP;
 712 }
 713
 714 static int catc_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 715 {
 716         switch(cmd) {
 717         case SIOCETHTOOL:
 718                return netdev_ethtool_ioctl(dev, (void *) rq->ifr_data);
 719         default:
 720                return -ENOTTY; /* Apparently this is the standard ioctl errno */
 721         }
 722 }
 723
 724
 725 /*
 726  * Open, close.
 727  */
 728
 729 static int catc_open(struct net_device *netdev)
 730 {
 731         struct catc *catc = netdev->priv;
 732         int status;
 733
 734         catc->irq_urb.dev = catc->usbdev;
 735         if ((status = usb_submit_urb(&catc->irq_urb)) < 0) {
 736                 err("submit(irq_urb) status %d", status);
 737                 return -1;
 738         }
 739
 740         netif_start_queue(netdev);
 741
 742         if (!catc->is_f5u011)
 743                 mod_timer(&catc->timer, jiffies + STATS_UPDATE);
 744
 745         return 0;
 746 }
 747
 748 static int catc_stop(struct net_device *netdev)
 749 {
 750         struct catc *catc = netdev->priv;
 751
 752         netif_stop_queue(netdev);
 753
 754         if (!catc->is_f5u011)
 755                 del_timer_sync(&catc->timer);
 756
 757         usb_unlink_urb(&catc->rx_urb);
 758         usb_unlink_urb(&catc->tx_urb);
 759         usb_unlink_urb(&catc->irq_urb);
 760         usb_unlink_urb(&catc->ctrl_urb);
 761
 762         return 0;
 763 }
 764
 765 /*
 766  * USB probe, disconnect.
 767  */
 768
 769 static void *catc_probe(struct usb_device *usbdev, unsigned int ifnum, const struct usb_device_id *id)
 770 {
 771         struct net_device *netdev;
 772         struct catc *catc;
 773         u8 broadcast[6];
 774         int i, pktsz;
 775
 776         if (usb_set_interface(usbdev, ifnum, 1)) {
 777                 err("Can't set altsetting 1.");
 778                 return NULL;
 779         }
 780
 781         catc = kmalloc(sizeof(struct catc), GFP_KERNEL);
 782         if (!catc)
 783                 return NULL;
 784
 785         memset(catc, 0, sizeof(struct catc));
 786
 787         netdev = init_etherdev(0, 0);
 788         if (!netdev) {
 789                 kfree(catc);
 790                 return NULL;
 791         }
 792
 793         netdev->open = catc_open;
 794         netdev->hard_start_xmit = catc_hard_start_xmit;
 795         netdev->stop = catc_stop;
 796         netdev->get_stats = catc_get_stats;
 797         netdev->tx_timeout = catc_tx_timeout;
 798         netdev->watchdog_timeo = TX_TIMEOUT;
 799         netdev->set_multicast_list = catc_set_multicast_list;
 800         netdev->do_ioctl = catc_ioctl;
 801         netdev->priv = catc;
 802
 803         catc->usbdev = usbdev;
 804         catc->netdev = netdev;
 805
 806         catc->tx_lock = SPIN_LOCK_UNLOCKED;
 807         catc->ctrl_lock = SPIN_LOCK_UNLOCKED;
 808
 809         init_timer(&catc->timer);
 810         catc->timer.data = (long) catc;
 811         catc->timer.function = catc_stats_timer;
 812
 813         /* The F5U011 has the same vendor/product as the netmate
 814          *  but a device version of 0x130
 815          */
 816         if (usbdev->descriptor.idVendor == 0x0423 &&
 817             usbdev->descriptor.idProduct == 0xa &&
 818             catc->usbdev->descriptor.bcdDevice == 0x0130) {
 819                 dbg("Testing for f5u011");
 820                 catc->is_f5u011 = 1;
 821                 atomic_set(&catc->recq_sz, 0);
 822                 pktsz = RX_PKT_SZ;
 823         } else {
 824                 pktsz = RX_MAX_BURST * (PKT_SZ + 2);
 825         }
 826
 827         FILL_CONTROL_URB(&catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
 828                 NULL, NULL, 0, catc_ctrl_done, catc);
 829
 830         FILL_BULK_URB(&catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
 831                 NULL, 0, catc_tx_done, catc);
 832
 833         FILL_BULK_URB(&catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
 834                 catc->rx_buf, pktsz, catc_rx_done, catc);
 835
 836         FILL_INT_URB(&catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
 837                 catc->irq_buf, 2, catc_irq_done, catc, 1);
 838
 839         if (!catc->is_f5u011) {
 840                 dbg("Checking memory size\n");
 841
 842                 i = 0x12345678;
 843                 catc_write_mem(catc, 0x7a80, &i, 4);
 844                 i = 0x87654321;
 845                 catc_write_mem(catc, 0xfa80, &i, 4);
 846                 catc_read_mem(catc, 0x7a80, &i, 4);
 847
 848                 switch (i) {
 849                 case 0x12345678:
 850                         catc_set_reg(catc, TxBufCount, 8);
 851                         catc_set_reg(catc, RxBufCount, 32);
 852                         dbg("64k Memory\n");
 853                         break;
 854                 default:
 855                         warn("Couldn't detect memory size, assuming 32k");
 856                 case 0x87654321:
 857                         catc_set_reg(catc, TxBufCount, 4);
 858                         catc_set_reg(catc, RxBufCount, 16);
 859                         dbg("32k Memory\n");
 860                         break;
 861                 }
 862
 863                 dbg("Getting MAC from SEEROM.");
 864
 865                 catc_get_mac(catc, netdev->dev_addr);
 866
 867                 dbg("Setting MAC into registers.");
 868
 869                 for (i = 0; i < 6; i++)
 870                         catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
 871
 872                 dbg("Filling the multicast list.");
 873
 874                 memset(broadcast, 0xff, 6);
 875                 catc_multicast(broadcast, catc->multicast);
 876                 catc_multicast(netdev->dev_addr, catc->multicast);
 877                 catc_write_mem(catc, 0xfa80, catc->multicast, 64);
 878
 879                 dbg("Clearing error counters.");
 880
 881                 for (i = 0; i < 8; i++)
 882                         catc_set_reg(catc, EthStats + i, 0);
 883                 catc->last_stats = jiffies;
 884
 885                 dbg("Enabling.");
 886
 887                 catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
 888                 catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
 889                 catc_set_reg(catc, LEDCtrl, LEDLink);
 890                 catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
 891         } else {
 892                 dbg("Performing reset\n");
 893                 catc_reset(catc);
 894                 catc_get_mac(catc, netdev->dev_addr);
 895
 896                 dbg("Setting RX Mode");
 897                 catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
 898                 catc->rxmode[1] = 0;
 899                 f5u011_rxmode(catc, catc->rxmode);
 900         }
 901         dbg("Init done.");
 902         printk(KERN_INFO "%s: %s USB Ethernet at usb%d:%d.%d, ",
 903                netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
 904                usbdev->bus->busnum, usbdev->devnum, ifnum);
 905         for (i = 0; i < 5; i++) printk("%2.2x:", netdev->dev_addr[i]);
 906         printk("%2.2x.\n", netdev->dev_addr[i]);
 907         return catc;
 908 }
 909
 910 static void catc_disconnect(struct usb_device *usbdev, void *dev_ptr)
 911 {
 912         struct catc *catc = dev_ptr;
 913         unregister_netdev(catc->netdev);
 914         kfree(catc->netdev);
 915         kfree(catc);
 916 }
 917
 918 /*
 919  * Module functions and tables.
 920  */
 921
 922 static struct usb_device_id catc_id_table [] = {
 923         { USB_DEVICE(0x0423, 0xa) },    /* CATC Netmate, Belkin F5U011 */
 924         { USB_DEVICE(0x0423, 0xc) },    /* CATC Netmate II, Belkin F5U111 */
 925         { USB_DEVICE(0x08d1, 0x1) },    /* smartBridges smartNIC */
 926         { }
 927 };
 928
 929 MODULE_DEVICE_TABLE(usb, catc_id_table);
 930
 931 static struct usb_driver catc_driver = {
 932         name:           driver_name,
 933         probe:          catc_probe,
 934         disconnect:     catc_disconnect,
 935         id_table:       catc_id_table,
 936 };
 937
 938 static int __init catc_init(void)
 939 {
 940         info(DRIVER_VERSION " " DRIVER_DESC);
 941         usb_register(&catc_driver);
 942         return 0;
 943 }
 944
 945 static void __exit catc_exit(void)
 946 {
 947         usb_deregister(&catc_driver);
 948 }
 949
 950 module_init(catc_init);
 951 module_exit(catc_exit);