drivers/net/usb/catc.c

   1 /*
   2  *  Copyright (c) 2001 Vojtech Pavlik
   3  *
   4  *  CATC EL1210A NetMate USB Ethernet driver
   5  *
   6  *  Sponsored by SuSE
   7  *
   8  *  Based on the work of
   9  *              Donald Becker
  10  *
  11  *  Old chipset support added by Simon Evans <spse@secret.org.uk> 2002
  12  *    - adds support for Belkin F5U011
  13  */
  14
  15 /*
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  29  *
  30  * Should you need to contact me, the author, you can do so either by
  31  * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
  32  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  33  */
  34
  35 #include <linux/init.h>
  36 #include <linux/module.h>
  37 #include <linux/kernel.h>
  38 #include <linux/string.h>
  39 #include <linux/slab.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/skbuff.h>
  43 #include <linux/spinlock.h>
  44 #include <linux/ethtool.h>
  45 #include <linux/crc32.h>
  46 #include <linux/bitops.h>
  47 #include <asm/uaccess.h>
  48
  49 #undef DEBUG
  50
  51 #include <linux/usb.h>
  52
  53 /*
  54  * Version information.
  55  */
  56
  57 #define DRIVER_VERSION "v2.8"
  58 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>"
  59 #define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver"
  60 #define SHORT_DRIVER_DESC "EL1210A NetMate USB Ethernet"
  61
  62 MODULE_AUTHOR(DRIVER_AUTHOR);
  63 MODULE_DESCRIPTION(DRIVER_DESC);
  64 MODULE_LICENSE("GPL");
  65
  66 static const char driver_name[] = "catc";
  67
  68 /*
  69  * Some defines.
  70  */
  71
  72 #define STATS_UPDATE            (HZ)    /* Time between stats updates */
  73 #define TX_TIMEOUT              (5*HZ)  /* Max time the queue can be stopped */
  74 #define PKT_SZ                  1536    /* Max Ethernet packet size */
  75 #define RX_MAX_BURST            15      /* Max packets per rx buffer (> 0, < 16) */
  76 #define TX_MAX_BURST            15      /* Max full sized packets per tx buffer (> 0) */
  77 #define CTRL_QUEUE              16      /* Max control requests in flight (power of two) */
  78 #define RX_PKT_SZ               1600    /* Max size of receive packet for F5U011 */
  79
  80 /*
  81  * Control requests.
  82  */
  83
  84 enum control_requests {
  85         ReadMem =       0xf1,
  86         GetMac =        0xf2,
  87         Reset =         0xf4,
  88         SetMac =        0xf5,
  89         SetRxMode =     0xf5,  /* F5U011 only */
  90         WriteROM =      0xf8,
  91         SetReg =        0xfa,
  92         GetReg =        0xfb,
  93         WriteMem =      0xfc,
  94         ReadROM =       0xfd,
  95 };
  96
  97 /*
  98  * Registers.
  99  */
 100
 101 enum register_offsets {
 102         TxBufCount =    0x20,
 103         RxBufCount =    0x21,
 104         OpModes =       0x22,
 105         TxQed =         0x23,
 106         RxQed =         0x24,
 107         MaxBurst =      0x25,
 108         RxUnit =        0x60,
 109         EthStatus =     0x61,
 110         StationAddr0 =  0x67,
 111         EthStats =      0x69,
 112         LEDCtrl =       0x81,
 113 };
 114
 115 enum eth_stats {
 116         TxSingleColl =  0x00,
 117         TxMultiColl =   0x02,
 118         TxExcessColl =  0x04,
 119         RxFramErr =     0x06,
 120 };
 121
 122 enum op_mode_bits {
 123         Op3MemWaits =   0x03,
 124         OpLenInclude =  0x08,
 125         OpRxMerge =     0x10,
 126         OpTxMerge =     0x20,
 127         OpWin95bugfix = 0x40,
 128         OpLoopback =    0x80,
 129 };
 130
 131 enum rx_filter_bits {
 132         RxEnable =      0x01,
 133         RxPolarity =    0x02,
 134         RxForceOK =     0x04,
 135         RxMultiCast =   0x08,
 136         RxPromisc =     0x10,
 137         AltRxPromisc =  0x20, /* F5U011 uses different bit */
 138 };
 139
 140 enum led_values {
 141         LEDFast =       0x01,
 142         LEDSlow =       0x02,
 143         LEDFlash =      0x03,
 144         LEDPulse =      0x04,
 145         LEDLink =       0x08,
 146 };
 147
 148 enum link_status {
 149         LinkNoChange = 0,
 150         LinkGood     = 1,
 151         LinkBad      = 2
 152 };
 153
 154 /*
 155  * The catc struct.
 156  */
 157
 158 #define CTRL_RUNNING    0
 159 #define RX_RUNNING      1
 160 #define TX_RUNNING      2
 161
 162 struct catc {
 163         struct net_device *netdev;
 164         struct usb_device *usbdev;
 165
 166         struct net_device_stats stats;
 167         unsigned long flags;
 168
 169         unsigned int tx_ptr, tx_idx;
 170         unsigned int ctrl_head, ctrl_tail;
 171         spinlock_t tx_lock, ctrl_lock;
 172
 173         u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)];
 174         u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)];
 175         u8 irq_buf[2];
 176         u8 ctrl_buf[64];
 177         struct usb_ctrlrequest ctrl_dr;
 178
 179         struct timer_list timer;
 180         u8 stats_buf[8];
 181         u16 stats_vals[4];
 182         unsigned long last_stats;
 183
 184         u8 multicast[64];
 185
 186         struct ctrl_queue {
 187                 u8 dir;
 188                 u8 request;
 189                 u16 value;
 190                 u16 index;
 191                 void *buf;
 192                 int len;
 193                 void (*callback)(struct catc *catc, struct ctrl_queue *q);
 194         } ctrl_queue[CTRL_QUEUE];
 195
 196         struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb;
 197
 198         u8 is_f5u011;   /* Set if device is an F5U011 */
 199         u8 rxmode[2];   /* Used for F5U011 */
 200         atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */
 201 };
 202
 203 /*
 204  * Useful macros.
 205  */
 206
 207 #define catc_get_mac(catc, mac)                         catc_ctrl_msg(catc, USB_DIR_IN,  GetMac, 0, 0, mac,  6)
 208 #define catc_reset(catc)                                catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0)
 209 #define catc_set_reg(catc, reg, val)                    catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0)
 210 #define catc_get_reg(catc, reg, buf)                    catc_ctrl_msg(catc, USB_DIR_IN,  GetReg, 0, reg, buf, 1)
 211 #define catc_write_mem(catc, addr, buf, size)           catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size)
 212 #define catc_read_mem(catc, addr, buf, size)            catc_ctrl_msg(catc, USB_DIR_IN,  ReadMem, 0, addr, buf, size)
 213
 214 #define f5u011_rxmode(catc, rxmode)                     catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2)
 215 #define f5u011_rxmode_async(catc, rxmode)               catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL)
 216 #define f5u011_mchash_async(catc, hash)                 catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL)
 217
 218 #define catc_set_reg_async(catc, reg, val)              catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL)
 219 #define catc_get_reg_async(catc, reg, cb)               catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb)
 220 #define catc_write_mem_async(catc, addr, buf, size)     catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL)
 221
 222 /*
 223  * Receive routines.
 224  */
 225
 226 static void catc_rx_done(struct urb *urb)
 227 {
 228         struct catc *catc = urb->context;
 229         u8 *pkt_start = urb->transfer_buffer;
 230         struct sk_buff *skb;
 231         int pkt_len, pkt_offset = 0;
 232         int status = urb->status;
 233
 234         if (!catc->is_f5u011) {
 235                 clear_bit(RX_RUNNING, &catc->flags);
 236                 pkt_offset = 2;
 237         }
 238
 239         if (status) {
 240                 dbg("rx_done, status %d, length %d", status, urb->actual_length);
 241                 return;
 242         }
 243
 244         do {
 245                 if(!catc->is_f5u011) {
 246                         pkt_len = le16_to_cpup((__le16*)pkt_start);
 247                         if (pkt_len > urb->actual_length) {
 248                                 catc->stats.rx_length_errors++;
 249                                 catc->stats.rx_errors++;
 250                                 break;
 251                         }
 252                 } else {
 253                         pkt_len = urb->actual_length;
 254                 }
 255
 256                 if (!(skb = dev_alloc_skb(pkt_len)))
 257                         return;
 258
 259                 skb_copy_to_linear_data(skb, pkt_start + pkt_offset, pkt_len);
 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         if (catc->is_f5u011) {
 276                 if (atomic_read(&catc->recq_sz)) {
 277                         int state;
 278                         atomic_dec(&catc->recq_sz);
 279                         dbg("getting extra packet");
 280                         urb->dev = catc->usbdev;
 281                         if ((state = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
 282                                 dbg("submit(rx_urb) status %d", state);
 283                         }
 284                 } else {
 285                         clear_bit(RX_RUNNING, &catc->flags);
 286                 }
 287         }
 288 }
 289
 290 static void catc_irq_done(struct urb *urb)
 291 {
 292         struct catc *catc = urb->context;
 293         u8 *data = urb->transfer_buffer;
 294         int status = urb->status;
 295         unsigned int hasdata = 0, linksts = LinkNoChange;
 296         int res;
 297
 298         if (!catc->is_f5u011) {
 299                 hasdata = data[1] & 0x80;
 300                 if (data[1] & 0x40)
 301                         linksts = LinkGood;
 302                 else if (data[1] & 0x20)
 303                         linksts = LinkBad;
 304         } else {
 305                 hasdata = (unsigned int)(be16_to_cpup((__be16*)data) & 0x0fff);
 306                 if (data[0] == 0x90)
 307                         linksts = LinkGood;
 308                 else if (data[0] == 0xA0)
 309                         linksts = LinkBad;
 310         }
 311
 312         switch (status) {
 313         case 0:                 /* success */
 314                 break;
 315         case -ECONNRESET:       /* unlink */
 316         case -ENOENT:
 317         case -ESHUTDOWN:
 318                 return;
 319         /* -EPIPE:  should clear the halt */
 320         default:                /* error */
 321                 dbg("irq_done, status %d, data %02x %02x.", status, data[0], data[1]);
 322                 goto resubmit;
 323         }
 324
 325         if (linksts == LinkGood) {
 326                 netif_carrier_on(catc->netdev);
 327                 dbg("link ok");
 328         }
 329
 330         if (linksts == LinkBad) {
 331                 netif_carrier_off(catc->netdev);
 332                 dbg("link bad");
 333         }
 334
 335         if (hasdata) {
 336                 if (test_and_set_bit(RX_RUNNING, &catc->flags)) {
 337                         if (catc->is_f5u011)
 338                                 atomic_inc(&catc->recq_sz);
 339                 } else {
 340                         catc->rx_urb->dev = catc->usbdev;
 341                         if ((res = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {
 342                                 err("submit(rx_urb) status %d", res);
 343                         }
 344                 }
 345         }
 346 resubmit:
 347         res = usb_submit_urb (urb, GFP_ATOMIC);
 348         if (res)
 349                 err ("can't resubmit intr, %s-%s, status %d",
 350                                 catc->usbdev->bus->bus_name,
 351                                 catc->usbdev->devpath, res);
 352 }
 353
 354 /*
 355  * Transmit routines.
 356  */
 357
 358 static int catc_tx_run(struct catc *catc)
 359 {
 360         int status;
 361
 362         if (catc->is_f5u011)
 363                 catc->tx_ptr = (catc->tx_ptr + 63) & ~63;
 364
 365         catc->tx_urb->transfer_buffer_length = catc->tx_ptr;
 366         catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx];
 367         catc->tx_urb->dev = catc->usbdev;
 368
 369         if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0)
 370                 err("submit(tx_urb), status %d", status);
 371
 372         catc->tx_idx = !catc->tx_idx;
 373         catc->tx_ptr = 0;
 374
 375         catc->netdev->trans_start = jiffies;
 376         return status;
 377 }
 378
 379 static void catc_tx_done(struct urb *urb)
 380 {
 381         struct catc *catc = urb->context;
 382         unsigned long flags;
 383         int r, status = urb->status;
 384
 385         if (status == -ECONNRESET) {
 386                 dbg("Tx Reset.");
 387                 urb->status = 0;
 388                 catc->netdev->trans_start = jiffies;
 389                 catc->stats.tx_errors++;
 390                 clear_bit(TX_RUNNING, &catc->flags);
 391                 netif_wake_queue(catc->netdev);
 392                 return;
 393         }
 394
 395         if (status) {
 396                 dbg("tx_done, status %d, length %d", status, urb->actual_length);
 397                 return;
 398         }
 399
 400         spin_lock_irqsave(&catc->tx_lock, flags);
 401
 402         if (catc->tx_ptr) {
 403                 r = catc_tx_run(catc);
 404                 if (unlikely(r < 0))
 405                         clear_bit(TX_RUNNING, &catc->flags);
 406         } else {
 407                 clear_bit(TX_RUNNING, &catc->flags);
 408         }
 409
 410         netif_wake_queue(catc->netdev);
 411
 412         spin_unlock_irqrestore(&catc->tx_lock, flags);
 413 }
 414
 415 static int catc_hard_start_xmit(struct sk_buff *skb, struct net_device *netdev)
 416 {
 417         struct catc *catc = netdev_priv(netdev);
 418         unsigned long flags;
 419         int r = 0;
 420         char *tx_buf;
 421
 422         spin_lock_irqsave(&catc->tx_lock, flags);
 423
 424         catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
 425         tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
 426         if (catc->is_f5u011)
 427                 *(__be16 *)tx_buf = cpu_to_be16(skb->len);
 428         else
 429                 *(__le16 *)tx_buf = cpu_to_le16(skb->len);
 430         skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
 431         catc->tx_ptr += skb->len + 2;
 432
 433         if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {
 434                 r = catc_tx_run(catc);
 435                 if (r < 0)
 436                         clear_bit(TX_RUNNING, &catc->flags);
 437         }
 438
 439         if ((catc->is_f5u011 && catc->tx_ptr)
 440              || (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
 441                 netif_stop_queue(netdev);
 442
 443         spin_unlock_irqrestore(&catc->tx_lock, flags);
 444
 445         if (r >= 0) {
 446                 catc->stats.tx_bytes += skb->len;
 447                 catc->stats.tx_packets++;
 448         }
 449
 450         dev_kfree_skb(skb);
 451
 452         return 0;
 453 }
 454
 455 static void catc_tx_timeout(struct net_device *netdev)
 456 {
 457         struct catc *catc = netdev_priv(netdev);
 458
 459         dev_warn(&netdev->dev, "Transmit timed out.\n");
 460         usb_unlink_urb(catc->tx_urb);
 461 }
 462
 463 /*
 464  * Control messages.
 465  */
 466
 467 static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
 468 {
 469         int retval = usb_control_msg(catc->usbdev,
 470                 dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),
 471                  request, 0x40 | dir, value, index, buf, len, 1000);
 472         return retval < 0 ? retval : 0;
 473 }
 474
 475 static void catc_ctrl_run(struct catc *catc)
 476 {
 477         struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;
 478         struct usb_device *usbdev = catc->usbdev;
 479         struct urb *urb = catc->ctrl_urb;
 480         struct usb_ctrlrequest *dr = &catc->ctrl_dr;
 481         int status;
 482
 483         dr->bRequest = q->request;
 484         dr->bRequestType = 0x40 | q->dir;
 485         dr->wValue = cpu_to_le16(q->value);
 486         dr->wIndex = cpu_to_le16(q->index);
 487         dr->wLength = cpu_to_le16(q->len);
 488
 489         urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);
 490         urb->transfer_buffer_length = q->len;
 491         urb->transfer_buffer = catc->ctrl_buf;
 492         urb->setup_packet = (void *) dr;
 493         urb->dev = usbdev;
 494
 495         if (!q->dir && q->buf && q->len)
 496                 memcpy(catc->ctrl_buf, q->buf, q->len);
 497
 498         if ((status = usb_submit_urb(catc->ctrl_urb, GFP_KERNEL)))
 499                 err("submit(ctrl_urb) status %d", status);
 500 }
 501
 502 static void catc_ctrl_done(struct urb *urb)
 503 {
 504         struct catc *catc = urb->context;
 505         struct ctrl_queue *q;
 506         unsigned long flags;
 507         int status = urb->status;
 508
 509         if (status)
 510                 dbg("ctrl_done, status %d, len %d.", status, urb->actual_length);
 511
 512         spin_lock_irqsave(&catc->ctrl_lock, flags);
 513
 514         q = catc->ctrl_queue + catc->ctrl_tail;
 515
 516         if (q->dir) {
 517                 if (q->buf && q->len)
 518                         memcpy(q->buf, catc->ctrl_buf, q->len);
 519                 else
 520                         q->buf = catc->ctrl_buf;
 521         }
 522
 523         if (q->callback)
 524                 q->callback(catc, q);
 525
 526         catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
 527
 528         if (catc->ctrl_head != catc->ctrl_tail)
 529                 catc_ctrl_run(catc);
 530         else
 531                 clear_bit(CTRL_RUNNING, &catc->flags);
 532
 533         spin_unlock_irqrestore(&catc->ctrl_lock, flags);
 534 }
 535
 536 static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,
 537         u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))
 538 {
 539         struct ctrl_queue *q;
 540         int retval = 0;
 541         unsigned long flags;
 542
 543         spin_lock_irqsave(&catc->ctrl_lock, flags);
 544
 545         q = catc->ctrl_queue + catc->ctrl_head;
 546
 547         q->dir = dir;
 548         q->request = request;
 549         q->value = value;
 550         q->index = index;
 551         q->buf = buf;
 552         q->len = len;
 553         q->callback = callback;
 554
 555         catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);
 556
 557         if (catc->ctrl_head == catc->ctrl_tail) {
 558                 err("ctrl queue full");
 559                 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
 560                 retval = -1;
 561         }
 562
 563         if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))
 564                 catc_ctrl_run(catc);
 565
 566         spin_unlock_irqrestore(&catc->ctrl_lock, flags);
 567
 568         return retval;
 569 }
 570
 571 /*
 572  * Statistics.
 573  */
 574
 575 static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)
 576 {
 577         int index = q->index - EthStats;
 578         u16 data, last;
 579
 580         catc->stats_buf[index] = *((char *)q->buf);
 581
 582         if (index & 1)
 583                 return;
 584
 585         data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];
 586         last = catc->stats_vals[index >> 1];
 587
 588         switch (index) {
 589                 case TxSingleColl:
 590                 case TxMultiColl:
 591                         catc->stats.collisions += data - last;
 592                         break;
 593                 case TxExcessColl:
 594                         catc->stats.tx_aborted_errors += data - last;
 595                         catc->stats.tx_errors += data - last;
 596                         break;
 597                 case RxFramErr:
 598                         catc->stats.rx_frame_errors += data - last;
 599                         catc->stats.rx_errors += data - last;
 600                         break;
 601         }
 602
 603         catc->stats_vals[index >> 1] = data;
 604 }
 605
 606 static void catc_stats_timer(unsigned long data)
 607 {
 608         struct catc *catc = (void *) data;
 609         int i;
 610
 611         for (i = 0; i < 8; i++)
 612                 catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);
 613
 614         mod_timer(&catc->timer, jiffies + STATS_UPDATE);
 615 }
 616
 617 static struct net_device_stats *catc_get_stats(struct net_device *netdev)
 618 {
 619         struct catc *catc = netdev_priv(netdev);
 620         return &catc->stats;
 621 }
 622
 623 /*
 624  * Receive modes. Broadcast, Multicast, Promisc.
 625  */
 626
 627 static void catc_multicast(unsigned char *addr, u8 *multicast)
 628 {
 629         u32 crc;
 630
 631         crc = ether_crc_le(6, addr);
 632         multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
 633 }
 634
 635 static void catc_set_multicast_list(struct net_device *netdev)
 636 {
 637         struct catc *catc = netdev_priv(netdev);
 638         struct dev_mc_list *mc;
 639         u8 broadcast[6];
 640         u8 rx = RxEnable | RxPolarity | RxMultiCast;
 641         int i;
 642
 643         memset(broadcast, 0xff, 6);
 644         memset(catc->multicast, 0, 64);
 645
 646         catc_multicast(broadcast, catc->multicast);
 647         catc_multicast(netdev->dev_addr, catc->multicast);
 648
 649         if (netdev->flags & IFF_PROMISC) {
 650                 memset(catc->multicast, 0xff, 64);
 651                 rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;
 652         }
 653
 654         if (netdev->flags & IFF_ALLMULTI) {
 655                 memset(catc->multicast, 0xff, 64);
 656         } else {
 657                 for (i = 0, mc = netdev->mc_list; mc && i < netdev->mc_count; i++, mc = mc->next) {
 658                         u32 crc = ether_crc_le(6, mc->dmi_addr);
 659                         if (!catc->is_f5u011) {
 660                                 catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
 661                         } else {
 662                                 catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);
 663                         }
 664                 }
 665         }
 666         if (!catc->is_f5u011) {
 667                 catc_set_reg_async(catc, RxUnit, rx);
 668                 catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);
 669         } else {
 670                 f5u011_mchash_async(catc, catc->multicast);
 671                 if (catc->rxmode[0] != rx) {
 672                         catc->rxmode[0] = rx;
 673                         dbg("Setting RX mode to %2.2X %2.2X", catc->rxmode[0], catc->rxmode[1]);
 674                         f5u011_rxmode_async(catc, catc->rxmode);
 675                 }
 676         }
 677 }
 678
 679 static void catc_get_drvinfo(struct net_device *dev,
 680                              struct ethtool_drvinfo *info)
 681 {
 682         struct catc *catc = netdev_priv(dev);
 683         strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
 684         strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
 685         usb_make_path (catc->usbdev, info->bus_info, sizeof info->bus_info);
 686 }
 687
 688 static int catc_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 689 {
 690         struct catc *catc = netdev_priv(dev);
 691         if (!catc->is_f5u011)
 692                 return -EOPNOTSUPP;
 693
 694         cmd->supported = SUPPORTED_10baseT_Half | SUPPORTED_TP;
 695         cmd->advertising = ADVERTISED_10baseT_Half | ADVERTISED_TP;
 696         cmd->speed = SPEED_10;
 697         cmd->duplex = DUPLEX_HALF;
 698         cmd->port = PORT_TP;
 699         cmd->phy_address = 0;
 700         cmd->transceiver = XCVR_INTERNAL;
 701         cmd->autoneg = AUTONEG_DISABLE;
 702         cmd->maxtxpkt = 1;
 703         cmd->maxrxpkt = 1;
 704         return 0;
 705 }
 706
 707 static struct ethtool_ops ops = {
 708         .get_drvinfo = catc_get_drvinfo,
 709         .get_settings = catc_get_settings,
 710         .get_link = ethtool_op_get_link
 711 };
 712
 713 /*
 714  * Open, close.
 715  */
 716
 717 static int catc_open(struct net_device *netdev)
 718 {
 719         struct catc *catc = netdev_priv(netdev);
 720         int status;
 721
 722         catc->irq_urb->dev = catc->usbdev;
 723         if ((status = usb_submit_urb(catc->irq_urb, GFP_KERNEL)) < 0) {
 724                 err("submit(irq_urb) status %d", status);
 725                 return -1;
 726         }
 727
 728         netif_start_queue(netdev);
 729
 730         if (!catc->is_f5u011)
 731                 mod_timer(&catc->timer, jiffies + STATS_UPDATE);
 732
 733         return 0;
 734 }
 735
 736 static int catc_stop(struct net_device *netdev)
 737 {
 738         struct catc *catc = netdev_priv(netdev);
 739
 740         netif_stop_queue(netdev);
 741
 742         if (!catc->is_f5u011)
 743                 del_timer_sync(&catc->timer);
 744
 745         usb_kill_urb(catc->rx_urb);
 746         usb_kill_urb(catc->tx_urb);
 747         usb_kill_urb(catc->irq_urb);
 748         usb_kill_urb(catc->ctrl_urb);
 749
 750         return 0;
 751 }
 752
 753 /*
 754  * USB probe, disconnect.
 755  */
 756
 757 static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)
 758 {
 759         struct usb_device *usbdev = interface_to_usbdev(intf);
 760         struct net_device *netdev;
 761         struct catc *catc;
 762         u8 broadcast[6];
 763         int i, pktsz;
 764
 765         if (usb_set_interface(usbdev,
 766                         intf->altsetting->desc.bInterfaceNumber, 1)) {
 767                 err("Can't set altsetting 1.");
 768                 return -EIO;
 769         }
 770
 771         netdev = alloc_etherdev(sizeof(struct catc));
 772         if (!netdev)
 773                 return -ENOMEM;
 774
 775         catc = netdev_priv(netdev);
 776
 777         netdev->open = catc_open;
 778         netdev->hard_start_xmit = catc_hard_start_xmit;
 779         netdev->stop = catc_stop;
 780         netdev->get_stats = catc_get_stats;
 781         netdev->tx_timeout = catc_tx_timeout;
 782         netdev->watchdog_timeo = TX_TIMEOUT;
 783         netdev->set_multicast_list = catc_set_multicast_list;
 784         SET_ETHTOOL_OPS(netdev, &ops);
 785
 786         catc->usbdev = usbdev;
 787         catc->netdev = netdev;
 788
 789         spin_lock_init(&catc->tx_lock);
 790         spin_lock_init(&catc->ctrl_lock);
 791
 792         init_timer(&catc->timer);
 793         catc->timer.data = (long) catc;
 794         catc->timer.function = catc_stats_timer;
 795
 796         catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
 797         catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
 798         catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
 799         catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
 800         if ((!catc->ctrl_urb) || (!catc->tx_urb) ||
 801             (!catc->rx_urb) || (!catc->irq_urb)) {
 802                 err("No free urbs available.");
 803                 usb_free_urb(catc->ctrl_urb);
 804                 usb_free_urb(catc->tx_urb);
 805                 usb_free_urb(catc->rx_urb);
 806                 usb_free_urb(catc->irq_urb);
 807                 free_netdev(netdev);
 808                 return -ENOMEM;
 809         }
 810
 811         /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
 812         if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 &&
 813             le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
 814             le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
 815                 dbg("Testing for f5u011");
 816                 catc->is_f5u011 = 1;
 817                 atomic_set(&catc->recq_sz, 0);
 818                 pktsz = RX_PKT_SZ;
 819         } else {
 820                 pktsz = RX_MAX_BURST * (PKT_SZ + 2);
 821         }
 822
 823         usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
 824                 NULL, NULL, 0, catc_ctrl_done, catc);
 825
 826         usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
 827                 NULL, 0, catc_tx_done, catc);
 828
 829         usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
 830                 catc->rx_buf, pktsz, catc_rx_done, catc);
 831
 832         usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
 833                 catc->irq_buf, 2, catc_irq_done, catc, 1);
 834
 835         if (!catc->is_f5u011) {
 836                 dbg("Checking memory size\n");
 837
 838                 i = 0x12345678;
 839                 catc_write_mem(catc, 0x7a80, &i, 4);
 840                 i = 0x87654321;
 841                 catc_write_mem(catc, 0xfa80, &i, 4);
 842                 catc_read_mem(catc, 0x7a80, &i, 4);
 843
 844                 switch (i) {
 845                 case 0x12345678:
 846                         catc_set_reg(catc, TxBufCount, 8);
 847                         catc_set_reg(catc, RxBufCount, 32);
 848                         dbg("64k Memory\n");
 849                         break;
 850                 default:
 851                         dev_warn(&intf->dev,
 852                                  "Couldn't detect memory size, assuming 32k\n");
 853                 case 0x87654321:
 854                         catc_set_reg(catc, TxBufCount, 4);
 855                         catc_set_reg(catc, RxBufCount, 16);
 856                         dbg("32k Memory\n");
 857                         break;
 858                 }
 859
 860                 dbg("Getting MAC from SEEROM.");
 861
 862                 catc_get_mac(catc, netdev->dev_addr);
 863
 864                 dbg("Setting MAC into registers.");
 865
 866                 for (i = 0; i < 6; i++)
 867                         catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
 868
 869                 dbg("Filling the multicast list.");
 870
 871                 memset(broadcast, 0xff, 6);
 872                 catc_multicast(broadcast, catc->multicast);
 873                 catc_multicast(netdev->dev_addr, catc->multicast);
 874                 catc_write_mem(catc, 0xfa80, catc->multicast, 64);
 875
 876                 dbg("Clearing error counters.");
 877
 878                 for (i = 0; i < 8; i++)
 879                         catc_set_reg(catc, EthStats + i, 0);
 880                 catc->last_stats = jiffies;
 881
 882                 dbg("Enabling.");
 883
 884                 catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
 885                 catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
 886                 catc_set_reg(catc, LEDCtrl, LEDLink);
 887                 catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
 888         } else {
 889                 dbg("Performing reset\n");
 890                 catc_reset(catc);
 891                 catc_get_mac(catc, netdev->dev_addr);
 892
 893                 dbg("Setting RX Mode");
 894                 catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
 895                 catc->rxmode[1] = 0;
 896                 f5u011_rxmode(catc, catc->rxmode);
 897         }
 898         dbg("Init done.");
 899         printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, ",
 900                netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
 901                usbdev->bus->bus_name, usbdev->devpath);
 902         for (i = 0; i < 5; i++) printk("%2.2x:", netdev->dev_addr[i]);
 903         printk("%2.2x.\n", netdev->dev_addr[i]);
 904         usb_set_intfdata(intf, catc);
 905
 906         SET_NETDEV_DEV(netdev, &intf->dev);
 907         if (register_netdev(netdev) != 0) {
 908                 usb_set_intfdata(intf, NULL);
 909                 usb_free_urb(catc->ctrl_urb);
 910                 usb_free_urb(catc->tx_urb);
 911                 usb_free_urb(catc->rx_urb);
 912                 usb_free_urb(catc->irq_urb);
 913                 free_netdev(netdev);
 914                 return -EIO;
 915         }
 916         return 0;
 917 }
 918
 919 static void catc_disconnect(struct usb_interface *intf)
 920 {
 921         struct catc *catc = usb_get_intfdata(intf);
 922
 923         usb_set_intfdata(intf, NULL);
 924         if (catc) {
 925                 unregister_netdev(catc->netdev);
 926                 usb_free_urb(catc->ctrl_urb);
 927                 usb_free_urb(catc->tx_urb);
 928                 usb_free_urb(catc->rx_urb);
 929                 usb_free_urb(catc->irq_urb);
 930                 free_netdev(catc->netdev);
 931         }
 932 }
 933
 934 /*
 935  * Module functions and tables.
 936  */
 937
 938 static struct usb_device_id catc_id_table [] = {
 939         { USB_DEVICE(0x0423, 0xa) },    /* CATC Netmate, Belkin F5U011 */
 940         { USB_DEVICE(0x0423, 0xc) },    /* CATC Netmate II, Belkin F5U111 */
 941         { USB_DEVICE(0x08d1, 0x1) },    /* smartBridges smartNIC */
 942         { }
 943 };
 944
 945 MODULE_DEVICE_TABLE(usb, catc_id_table);
 946
 947 static struct usb_driver catc_driver = {
 948         .name =         driver_name,
 949         .probe =        catc_probe,
 950         .disconnect =   catc_disconnect,
 951         .id_table =     catc_id_table,
 952 };
 953
 954 static int __init catc_init(void)
 955 {
 956         int result = usb_register(&catc_driver);
 957         if (result == 0)
 958                 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
 959                        DRIVER_DESC "\n");
 960         return result;
 961 }
 962
 963 static void __exit catc_exit(void)
 964 {
 965         usb_deregister(&catc_driver);
 966 }
 967
 968 module_init(catc_init);
 969 module_exit(catc_exit);