drivers/net/usb/catc.c

   1 /*
   2  *  Copyright (c) 2001 Vojtech Pavlik
   3  *
   4  *  CATC EL1210A NetMate USB Ethernet driver
   5  *
   6  *  Sponsored by SuSE
   7  *
   8  *  Based on the work of
   9  *              Donald Becker
  10  *
  11  *  Old chipset support added by Simon Evans <spse@secret.org.uk> 2002
  12  *    - adds support for Belkin F5U011
  13  */
  14
  15 /*
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  28  *
  29  * Should you need to contact me, the author, you can do so either by
  30  * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
  31  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  32  */
  33
  34 #include <linux/init.h>
  35 #include <linux/module.h>
  36 #include <linux/kernel.h>
  37 #include <linux/string.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/etherdevice.h>
  40 #include <linux/skbuff.h>
  41 #include <linux/spinlock.h>
  42 #include <linux/ethtool.h>
  43 #include <linux/crc32.h>
  44 #include <linux/bitops.h>
  45 #include <linux/gfp.h>
  46 #include <asm/uaccess.h>
  47
  48 #undef DEBUG
  49
  50 #include <linux/usb.h>
  51
  52 /*
  53  * Version information.
  54  */
  55
  56 #define DRIVER_VERSION "v2.8"
  57 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>"
  58 #define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver"
  59 #define SHORT_DRIVER_DESC "EL1210A NetMate USB Ethernet"
  60
  61 MODULE_AUTHOR(DRIVER_AUTHOR);
  62 MODULE_DESCRIPTION(DRIVER_DESC);
  63 MODULE_LICENSE("GPL");
  64
  65 static const char driver_name[] = "catc";
  66
  67 /*
  68  * Some defines.
  69  */
  70
  71 #define STATS_UPDATE            (HZ)    /* Time between stats updates */
  72 #define TX_TIMEOUT              (5*HZ)  /* Max time the queue can be stopped */
  73 #define PKT_SZ                  1536    /* Max Ethernet packet size */
  74 #define RX_MAX_BURST            15      /* Max packets per rx buffer (> 0, < 16) */
  75 #define TX_MAX_BURST            15      /* Max full sized packets per tx buffer (> 0) */
  76 #define CTRL_QUEUE              16      /* Max control requests in flight (power of two) */
  77 #define RX_PKT_SZ               1600    /* Max size of receive packet for F5U011 */
  78
  79 /*
  80  * Control requests.
  81  */
  82
  83 enum control_requests {
  84         ReadMem =       0xf1,
  85         GetMac =        0xf2,
  86         Reset =         0xf4,
  87         SetMac =        0xf5,
  88         SetRxMode =     0xf5,  /* F5U011 only */
  89         WriteROM =      0xf8,
  90         SetReg =        0xfa,
  91         GetReg =        0xfb,
  92         WriteMem =      0xfc,
  93         ReadROM =       0xfd,
  94 };
  95
  96 /*
  97  * Registers.
  98  */
  99
 100 enum register_offsets {
 101         TxBufCount =    0x20,
 102         RxBufCount =    0x21,
 103         OpModes =       0x22,
 104         TxQed =         0x23,
 105         RxQed =         0x24,
 106         MaxBurst =      0x25,
 107         RxUnit =        0x60,
 108         EthStatus =     0x61,
 109         StationAddr0 =  0x67,
 110         EthStats =      0x69,
 111         LEDCtrl =       0x81,
 112 };
 113
 114 enum eth_stats {
 115         TxSingleColl =  0x00,
 116         TxMultiColl =   0x02,
 117         TxExcessColl =  0x04,
 118         RxFramErr =     0x06,
 119 };
 120
 121 enum op_mode_bits {
 122         Op3MemWaits =   0x03,
 123         OpLenInclude =  0x08,
 124         OpRxMerge =     0x10,
 125         OpTxMerge =     0x20,
 126         OpWin95bugfix = 0x40,
 127         OpLoopback =    0x80,
 128 };
 129
 130 enum rx_filter_bits {
 131         RxEnable =      0x01,
 132         RxPolarity =    0x02,
 133         RxForceOK =     0x04,
 134         RxMultiCast =   0x08,
 135         RxPromisc =     0x10,
 136         AltRxPromisc =  0x20, /* F5U011 uses different bit */
 137 };
 138
 139 enum led_values {
 140         LEDFast =       0x01,
 141         LEDSlow =       0x02,
 142         LEDFlash =      0x03,
 143         LEDPulse =      0x04,
 144         LEDLink =       0x08,
 145 };
 146
 147 enum link_status {
 148         LinkNoChange = 0,
 149         LinkGood     = 1,
 150         LinkBad      = 2
 151 };
 152
 153 /*
 154  * The catc struct.
 155  */
 156
 157 #define CTRL_RUNNING    0
 158 #define RX_RUNNING      1
 159 #define TX_RUNNING      2
 160
 161 struct catc {
 162         struct net_device *netdev;
 163         struct usb_device *usbdev;
 164
 165         unsigned long flags;
 166
 167         unsigned int tx_ptr, tx_idx;
 168         unsigned int ctrl_head, ctrl_tail;
 169         spinlock_t tx_lock, ctrl_lock;
 170
 171         u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)];
 172         u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)];
 173         u8 irq_buf[2];
 174         u8 ctrl_buf[64];
 175         struct usb_ctrlrequest ctrl_dr;
 176
 177         struct timer_list timer;
 178         u8 stats_buf[8];
 179         u16 stats_vals[4];
 180         unsigned long last_stats;
 181
 182         u8 multicast[64];
 183
 184         struct ctrl_queue {
 185                 u8 dir;
 186                 u8 request;
 187                 u16 value;
 188                 u16 index;
 189                 void *buf;
 190                 int len;
 191                 void (*callback)(struct catc *catc, struct ctrl_queue *q);
 192         } ctrl_queue[CTRL_QUEUE];
 193
 194         struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb;
 195
 196         u8 is_f5u011;   /* Set if device is an F5U011 */
 197         u8 rxmode[2];   /* Used for F5U011 */
 198         atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */
 199 };
 200
 201 /*
 202  * Useful macros.
 203  */
 204
 205 #define catc_get_mac(catc, mac)                         catc_ctrl_msg(catc, USB_DIR_IN,  GetMac, 0, 0, mac,  6)
 206 #define catc_reset(catc)                                catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0)
 207 #define catc_set_reg(catc, reg, val)                    catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0)
 208 #define catc_get_reg(catc, reg, buf)                    catc_ctrl_msg(catc, USB_DIR_IN,  GetReg, 0, reg, buf, 1)
 209 #define catc_write_mem(catc, addr, buf, size)           catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size)
 210 #define catc_read_mem(catc, addr, buf, size)            catc_ctrl_msg(catc, USB_DIR_IN,  ReadMem, 0, addr, buf, size)
 211
 212 #define f5u011_rxmode(catc, rxmode)                     catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2)
 213 #define f5u011_rxmode_async(catc, rxmode)               catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL)
 214 #define f5u011_mchash_async(catc, hash)                 catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL)
 215
 216 #define catc_set_reg_async(catc, reg, val)              catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL)
 217 #define catc_get_reg_async(catc, reg, cb)               catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb)
 218 #define catc_write_mem_async(catc, addr, buf, size)     catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL)
 219
 220 /*
 221  * Receive routines.
 222  */
 223
 224 static void catc_rx_done(struct urb *urb)
 225 {
 226         struct catc *catc = urb->context;
 227         u8 *pkt_start = urb->transfer_buffer;
 228         struct sk_buff *skb;
 229         int pkt_len, pkt_offset = 0;
 230         int status = urb->status;
 231
 232         if (!catc->is_f5u011) {
 233                 clear_bit(RX_RUNNING, &catc->flags);
 234                 pkt_offset = 2;
 235         }
 236
 237         if (status) {
 238                 dev_dbg(&urb->dev->dev, "rx_done, status %d, length %d\n",
 239                         status, urb->actual_length);
 240                 return;
 241         }
 242
 243         do {
 244                 if(!catc->is_f5u011) {
 245                         pkt_len = le16_to_cpup((__le16*)pkt_start);
 246                         if (pkt_len > urb->actual_length) {
 247                                 catc->netdev->stats.rx_length_errors++;
 248                                 catc->netdev->stats.rx_errors++;
 249                                 break;
 250                         }
 251                 } else {
 252                         pkt_len = urb->actual_length;
 253                 }
 254
 255                 if (!(skb = dev_alloc_skb(pkt_len)))
 256                         return;
 257
 258                 skb_copy_to_linear_data(skb, pkt_start + pkt_offset, pkt_len);
 259                 skb_put(skb, pkt_len);
 260
 261                 skb->protocol = eth_type_trans(skb, catc->netdev);
 262                 netif_rx(skb);
 263
 264                 catc->netdev->stats.rx_packets++;
 265                 catc->netdev->stats.rx_bytes += pkt_len;
 266
 267                 /* F5U011 only does one packet per RX */
 268                 if (catc->is_f5u011)
 269                         break;
 270                 pkt_start += (((pkt_len + 1) >> 6) + 1) << 6;
 271
 272         } while (pkt_start - (u8 *) urb->transfer_buffer < urb->actual_length);
 273
 274         if (catc->is_f5u011) {
 275                 if (atomic_read(&catc->recq_sz)) {
 276                         int state;
 277                         atomic_dec(&catc->recq_sz);
 278                         netdev_dbg(catc->netdev, "getting extra packet\n");
 279                         urb->dev = catc->usbdev;
 280                         if ((state = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
 281                                 netdev_dbg(catc->netdev,
 282                                            "submit(rx_urb) status %d\n", 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                 dev_dbg(&urb->dev->dev,
 322                         "irq_done, status %d, data %02x %02x.\n",
 323                         status, data[0], data[1]);
 324                 goto resubmit;
 325         }
 326
 327         if (linksts == LinkGood) {
 328                 netif_carrier_on(catc->netdev);
 329                 netdev_dbg(catc->netdev, "link ok\n");
 330         }
 331
 332         if (linksts == LinkBad) {
 333                 netif_carrier_off(catc->netdev);
 334                 netdev_dbg(catc->netdev, "link bad\n");
 335         }
 336
 337         if (hasdata) {
 338                 if (test_and_set_bit(RX_RUNNING, &catc->flags)) {
 339                         if (catc->is_f5u011)
 340                                 atomic_inc(&catc->recq_sz);
 341                 } else {
 342                         catc->rx_urb->dev = catc->usbdev;
 343                         if ((res = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {
 344                                 dev_err(&catc->usbdev->dev,
 345                                         "submit(rx_urb) status %d\n", res);
 346                         }
 347                 }
 348         }
 349 resubmit:
 350         res = usb_submit_urb (urb, GFP_ATOMIC);
 351         if (res)
 352                 dev_err(&catc->usbdev->dev,
 353                         "can't resubmit intr, %s-%s, status %d\n",
 354                         catc->usbdev->bus->bus_name,
 355                         catc->usbdev->devpath, res);
 356 }
 357
 358 /*
 359  * Transmit routines.
 360  */
 361
 362 static int catc_tx_run(struct catc *catc)
 363 {
 364         int status;
 365
 366         if (catc->is_f5u011)
 367                 catc->tx_ptr = (catc->tx_ptr + 63) & ~63;
 368
 369         catc->tx_urb->transfer_buffer_length = catc->tx_ptr;
 370         catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx];
 371         catc->tx_urb->dev = catc->usbdev;
 372
 373         if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0)
 374                 dev_err(&catc->usbdev->dev, "submit(tx_urb), status %d\n",
 375                         status);
 376
 377         catc->tx_idx = !catc->tx_idx;
 378         catc->tx_ptr = 0;
 379
 380         catc->netdev->trans_start = jiffies;
 381         return status;
 382 }
 383
 384 static void catc_tx_done(struct urb *urb)
 385 {
 386         struct catc *catc = urb->context;
 387         unsigned long flags;
 388         int r, status = urb->status;
 389
 390         if (status == -ECONNRESET) {
 391                 dev_dbg(&urb->dev->dev, "Tx Reset.\n");
 392                 urb->status = 0;
 393                 catc->netdev->trans_start = jiffies;
 394                 catc->netdev->stats.tx_errors++;
 395                 clear_bit(TX_RUNNING, &catc->flags);
 396                 netif_wake_queue(catc->netdev);
 397                 return;
 398         }
 399
 400         if (status) {
 401                 dev_dbg(&urb->dev->dev, "tx_done, status %d, length %d\n",
 402                         status, urb->actual_length);
 403                 return;
 404         }
 405
 406         spin_lock_irqsave(&catc->tx_lock, flags);
 407
 408         if (catc->tx_ptr) {
 409                 r = catc_tx_run(catc);
 410                 if (unlikely(r < 0))
 411                         clear_bit(TX_RUNNING, &catc->flags);
 412         } else {
 413                 clear_bit(TX_RUNNING, &catc->flags);
 414         }
 415
 416         netif_wake_queue(catc->netdev);
 417
 418         spin_unlock_irqrestore(&catc->tx_lock, flags);
 419 }
 420
 421 static netdev_tx_t catc_start_xmit(struct sk_buff *skb,
 422                                          struct net_device *netdev)
 423 {
 424         struct catc *catc = netdev_priv(netdev);
 425         unsigned long flags;
 426         int r = 0;
 427         char *tx_buf;
 428
 429         spin_lock_irqsave(&catc->tx_lock, flags);
 430
 431         catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
 432         tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
 433         if (catc->is_f5u011)
 434                 *(__be16 *)tx_buf = cpu_to_be16(skb->len);
 435         else
 436                 *(__le16 *)tx_buf = cpu_to_le16(skb->len);
 437         skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
 438         catc->tx_ptr += skb->len + 2;
 439
 440         if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {
 441                 r = catc_tx_run(catc);
 442                 if (r < 0)
 443                         clear_bit(TX_RUNNING, &catc->flags);
 444         }
 445
 446         if ((catc->is_f5u011 && catc->tx_ptr) ||
 447             (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
 448                 netif_stop_queue(netdev);
 449
 450         spin_unlock_irqrestore(&catc->tx_lock, flags);
 451
 452         if (r >= 0) {
 453                 catc->netdev->stats.tx_bytes += skb->len;
 454                 catc->netdev->stats.tx_packets++;
 455         }
 456
 457         dev_kfree_skb(skb);
 458
 459         return NETDEV_TX_OK;
 460 }
 461
 462 static void catc_tx_timeout(struct net_device *netdev)
 463 {
 464         struct catc *catc = netdev_priv(netdev);
 465
 466         dev_warn(&netdev->dev, "Transmit timed out.\n");
 467         usb_unlink_urb(catc->tx_urb);
 468 }
 469
 470 /*
 471  * Control messages.
 472  */
 473
 474 static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
 475 {
 476         int retval = usb_control_msg(catc->usbdev,
 477                 dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),
 478                  request, 0x40 | dir, value, index, buf, len, 1000);
 479         return retval < 0 ? retval : 0;
 480 }
 481
 482 static void catc_ctrl_run(struct catc *catc)
 483 {
 484         struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;
 485         struct usb_device *usbdev = catc->usbdev;
 486         struct urb *urb = catc->ctrl_urb;
 487         struct usb_ctrlrequest *dr = &catc->ctrl_dr;
 488         int status;
 489
 490         dr->bRequest = q->request;
 491         dr->bRequestType = 0x40 | q->dir;
 492         dr->wValue = cpu_to_le16(q->value);
 493         dr->wIndex = cpu_to_le16(q->index);
 494         dr->wLength = cpu_to_le16(q->len);
 495
 496         urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);
 497         urb->transfer_buffer_length = q->len;
 498         urb->transfer_buffer = catc->ctrl_buf;
 499         urb->setup_packet = (void *) dr;
 500         urb->dev = usbdev;
 501
 502         if (!q->dir && q->buf && q->len)
 503                 memcpy(catc->ctrl_buf, q->buf, q->len);
 504
 505         if ((status = usb_submit_urb(catc->ctrl_urb, GFP_ATOMIC)))
 506                 dev_err(&catc->usbdev->dev, "submit(ctrl_urb) status %d\n",
 507                         status);
 508 }
 509
 510 static void catc_ctrl_done(struct urb *urb)
 511 {
 512         struct catc *catc = urb->context;
 513         struct ctrl_queue *q;
 514         unsigned long flags;
 515         int status = urb->status;
 516
 517         if (status)
 518                 dev_dbg(&urb->dev->dev, "ctrl_done, status %d, len %d.\n",
 519                         status, urb->actual_length);
 520
 521         spin_lock_irqsave(&catc->ctrl_lock, flags);
 522
 523         q = catc->ctrl_queue + catc->ctrl_tail;
 524
 525         if (q->dir) {
 526                 if (q->buf && q->len)
 527                         memcpy(q->buf, catc->ctrl_buf, q->len);
 528                 else
 529                         q->buf = catc->ctrl_buf;
 530         }
 531
 532         if (q->callback)
 533                 q->callback(catc, q);
 534
 535         catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
 536
 537         if (catc->ctrl_head != catc->ctrl_tail)
 538                 catc_ctrl_run(catc);
 539         else
 540                 clear_bit(CTRL_RUNNING, &catc->flags);
 541
 542         spin_unlock_irqrestore(&catc->ctrl_lock, flags);
 543 }
 544
 545 static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,
 546         u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))
 547 {
 548         struct ctrl_queue *q;
 549         int retval = 0;
 550         unsigned long flags;
 551
 552         spin_lock_irqsave(&catc->ctrl_lock, flags);
 553
 554         q = catc->ctrl_queue + catc->ctrl_head;
 555
 556         q->dir = dir;
 557         q->request = request;
 558         q->value = value;
 559         q->index = index;
 560         q->buf = buf;
 561         q->len = len;
 562         q->callback = callback;
 563
 564         catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);
 565
 566         if (catc->ctrl_head == catc->ctrl_tail) {
 567                 dev_err(&catc->usbdev->dev, "ctrl queue full\n");
 568                 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
 569                 retval = -1;
 570         }
 571
 572         if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))
 573                 catc_ctrl_run(catc);
 574
 575         spin_unlock_irqrestore(&catc->ctrl_lock, flags);
 576
 577         return retval;
 578 }
 579
 580 /*
 581  * Statistics.
 582  */
 583
 584 static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)
 585 {
 586         int index = q->index - EthStats;
 587         u16 data, last;
 588
 589         catc->stats_buf[index] = *((char *)q->buf);
 590
 591         if (index & 1)
 592                 return;
 593
 594         data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];
 595         last = catc->stats_vals[index >> 1];
 596
 597         switch (index) {
 598                 case TxSingleColl:
 599                 case TxMultiColl:
 600                         catc->netdev->stats.collisions += data - last;
 601                         break;
 602                 case TxExcessColl:
 603                         catc->netdev->stats.tx_aborted_errors += data - last;
 604                         catc->netdev->stats.tx_errors += data - last;
 605                         break;
 606                 case RxFramErr:
 607                         catc->netdev->stats.rx_frame_errors += data - last;
 608                         catc->netdev->stats.rx_errors += data - last;
 609                         break;
 610         }
 611
 612         catc->stats_vals[index >> 1] = data;
 613 }
 614
 615 static void catc_stats_timer(unsigned long data)
 616 {
 617         struct catc *catc = (void *) data;
 618         int i;
 619
 620         for (i = 0; i < 8; i++)
 621                 catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);
 622
 623         mod_timer(&catc->timer, jiffies + STATS_UPDATE);
 624 }
 625
 626 /*
 627  * Receive modes. Broadcast, Multicast, Promisc.
 628  */
 629
 630 static void catc_multicast(unsigned char *addr, u8 *multicast)
 631 {
 632         u32 crc;
 633
 634         crc = ether_crc_le(6, addr);
 635         multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
 636 }
 637
 638 static void catc_set_multicast_list(struct net_device *netdev)
 639 {
 640         struct catc *catc = netdev_priv(netdev);
 641         struct netdev_hw_addr *ha;
 642         u8 broadcast[ETH_ALEN];
 643         u8 rx = RxEnable | RxPolarity | RxMultiCast;
 644
 645         memset(broadcast, 0xff, ETH_ALEN);
 646         memset(catc->multicast, 0, 64);
 647
 648         catc_multicast(broadcast, catc->multicast);
 649         catc_multicast(netdev->dev_addr, catc->multicast);
 650
 651         if (netdev->flags & IFF_PROMISC) {
 652                 memset(catc->multicast, 0xff, 64);
 653                 rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;
 654         }
 655
 656         if (netdev->flags & IFF_ALLMULTI) {
 657                 memset(catc->multicast, 0xff, 64);
 658         } else {
 659                 netdev_for_each_mc_addr(ha, netdev) {
 660                         u32 crc = ether_crc_le(6, ha->addr);
 661                         if (!catc->is_f5u011) {
 662                                 catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
 663                         } else {
 664                                 catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);
 665                         }
 666                 }
 667         }
 668         if (!catc->is_f5u011) {
 669                 catc_set_reg_async(catc, RxUnit, rx);
 670                 catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);
 671         } else {
 672                 f5u011_mchash_async(catc, catc->multicast);
 673                 if (catc->rxmode[0] != rx) {
 674                         catc->rxmode[0] = rx;
 675                         netdev_dbg(catc->netdev,
 676                                    "Setting RX mode to %2.2X %2.2X\n",
 677                                    catc->rxmode[0], catc->rxmode[1]);
 678                         f5u011_rxmode_async(catc, catc->rxmode);
 679                 }
 680         }
 681 }
 682
 683 static void catc_get_drvinfo(struct net_device *dev,
 684                              struct ethtool_drvinfo *info)
 685 {
 686         struct catc *catc = netdev_priv(dev);
 687         strlcpy(info->driver, driver_name, sizeof(info->driver));
 688         strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
 689         usb_make_path(catc->usbdev, info->bus_info, sizeof(info->bus_info));
 690 }
 691
 692 static int catc_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 693 {
 694         struct catc *catc = netdev_priv(dev);
 695         if (!catc->is_f5u011)
 696                 return -EOPNOTSUPP;
 697
 698         cmd->supported = SUPPORTED_10baseT_Half | SUPPORTED_TP;
 699         cmd->advertising = ADVERTISED_10baseT_Half | ADVERTISED_TP;
 700         ethtool_cmd_speed_set(cmd, SPEED_10);
 701         cmd->duplex = DUPLEX_HALF;
 702         cmd->port = PORT_TP;
 703         cmd->phy_address = 0;
 704         cmd->transceiver = XCVR_INTERNAL;
 705         cmd->autoneg = AUTONEG_DISABLE;
 706         cmd->maxtxpkt = 1;
 707         cmd->maxrxpkt = 1;
 708         return 0;
 709 }
 710
 711 static const struct ethtool_ops ops = {
 712         .get_drvinfo = catc_get_drvinfo,
 713         .get_settings = catc_get_settings,
 714         .get_link = ethtool_op_get_link
 715 };
 716
 717 /*
 718  * Open, close.
 719  */
 720
 721 static int catc_open(struct net_device *netdev)
 722 {
 723         struct catc *catc = netdev_priv(netdev);
 724         int status;
 725
 726         catc->irq_urb->dev = catc->usbdev;
 727         if ((status = usb_submit_urb(catc->irq_urb, GFP_KERNEL)) < 0) {
 728                 dev_err(&catc->usbdev->dev, "submit(irq_urb) status %d\n",
 729                         status);
 730                 return -1;
 731         }
 732
 733         netif_start_queue(netdev);
 734
 735         if (!catc->is_f5u011)
 736                 mod_timer(&catc->timer, jiffies + STATS_UPDATE);
 737
 738         return 0;
 739 }
 740
 741 static int catc_stop(struct net_device *netdev)
 742 {
 743         struct catc *catc = netdev_priv(netdev);
 744
 745         netif_stop_queue(netdev);
 746
 747         if (!catc->is_f5u011)
 748                 del_timer_sync(&catc->timer);
 749
 750         usb_kill_urb(catc->rx_urb);
 751         usb_kill_urb(catc->tx_urb);
 752         usb_kill_urb(catc->irq_urb);
 753         usb_kill_urb(catc->ctrl_urb);
 754
 755         return 0;
 756 }
 757
 758 static const struct net_device_ops catc_netdev_ops = {
 759         .ndo_open               = catc_open,
 760         .ndo_stop               = catc_stop,
 761         .ndo_start_xmit         = catc_start_xmit,
 762
 763         .ndo_tx_timeout         = catc_tx_timeout,
 764         .ndo_set_rx_mode        = catc_set_multicast_list,
 765         .ndo_change_mtu         = eth_change_mtu,
 766         .ndo_set_mac_address    = eth_mac_addr,
 767         .ndo_validate_addr      = eth_validate_addr,
 768 };
 769
 770 /*
 771  * USB probe, disconnect.
 772  */
 773
 774 static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)
 775 {
 776         struct device *dev = &intf->dev;
 777         struct usb_device *usbdev = interface_to_usbdev(intf);
 778         struct net_device *netdev;
 779         struct catc *catc;
 780         u8 broadcast[ETH_ALEN];
 781         int i, pktsz;
 782
 783         if (usb_set_interface(usbdev,
 784                         intf->altsetting->desc.bInterfaceNumber, 1)) {
 785                 dev_err(dev, "Can't set altsetting 1.\n");
 786                 return -EIO;
 787         }
 788
 789         netdev = alloc_etherdev(sizeof(struct catc));
 790         if (!netdev)
 791                 return -ENOMEM;
 792
 793         catc = netdev_priv(netdev);
 794
 795         netdev->netdev_ops = &catc_netdev_ops;
 796         netdev->watchdog_timeo = TX_TIMEOUT;
 797         SET_ETHTOOL_OPS(netdev, &ops);
 798
 799         catc->usbdev = usbdev;
 800         catc->netdev = netdev;
 801
 802         spin_lock_init(&catc->tx_lock);
 803         spin_lock_init(&catc->ctrl_lock);
 804
 805         init_timer(&catc->timer);
 806         catc->timer.data = (long) catc;
 807         catc->timer.function = catc_stats_timer;
 808
 809         catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
 810         catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
 811         catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
 812         catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
 813         if ((!catc->ctrl_urb) || (!catc->tx_urb) ||
 814             (!catc->rx_urb) || (!catc->irq_urb)) {
 815                 dev_err(&intf->dev, "No free urbs available.\n");
 816                 usb_free_urb(catc->ctrl_urb);
 817                 usb_free_urb(catc->tx_urb);
 818                 usb_free_urb(catc->rx_urb);
 819                 usb_free_urb(catc->irq_urb);
 820                 free_netdev(netdev);
 821                 return -ENOMEM;
 822         }
 823
 824         /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
 825         if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 &&
 826             le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
 827             le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
 828                 dev_dbg(dev, "Testing for f5u011\n");
 829                 catc->is_f5u011 = 1;
 830                 atomic_set(&catc->recq_sz, 0);
 831                 pktsz = RX_PKT_SZ;
 832         } else {
 833                 pktsz = RX_MAX_BURST * (PKT_SZ + 2);
 834         }
 835
 836         usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
 837                 NULL, NULL, 0, catc_ctrl_done, catc);
 838
 839         usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
 840                 NULL, 0, catc_tx_done, catc);
 841
 842         usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
 843                 catc->rx_buf, pktsz, catc_rx_done, catc);
 844
 845         usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
 846                 catc->irq_buf, 2, catc_irq_done, catc, 1);
 847
 848         if (!catc->is_f5u011) {
 849                 dev_dbg(dev, "Checking memory size\n");
 850
 851                 i = 0x12345678;
 852                 catc_write_mem(catc, 0x7a80, &i, 4);
 853                 i = 0x87654321;
 854                 catc_write_mem(catc, 0xfa80, &i, 4);
 855                 catc_read_mem(catc, 0x7a80, &i, 4);
 856
 857                 switch (i) {
 858                 case 0x12345678:
 859                         catc_set_reg(catc, TxBufCount, 8);
 860                         catc_set_reg(catc, RxBufCount, 32);
 861                         dev_dbg(dev, "64k Memory\n");
 862                         break;
 863                 default:
 864                         dev_warn(&intf->dev,
 865                                  "Couldn't detect memory size, assuming 32k\n");
 866                 case 0x87654321:
 867                         catc_set_reg(catc, TxBufCount, 4);
 868                         catc_set_reg(catc, RxBufCount, 16);
 869                         dev_dbg(dev, "32k Memory\n");
 870                         break;
 871                 }
 872
 873                 dev_dbg(dev, "Getting MAC from SEEROM.\n");
 874
 875                 catc_get_mac(catc, netdev->dev_addr);
 876
 877                 dev_dbg(dev, "Setting MAC into registers.\n");
 878
 879                 for (i = 0; i < 6; i++)
 880                         catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
 881
 882                 dev_dbg(dev, "Filling the multicast list.\n");
 883
 884                 memset(broadcast, 0xff, ETH_ALEN);
 885                 catc_multicast(broadcast, catc->multicast);
 886                 catc_multicast(netdev->dev_addr, catc->multicast);
 887                 catc_write_mem(catc, 0xfa80, catc->multicast, 64);
 888
 889                 dev_dbg(dev, "Clearing error counters.\n");
 890
 891                 for (i = 0; i < 8; i++)
 892                         catc_set_reg(catc, EthStats + i, 0);
 893                 catc->last_stats = jiffies;
 894
 895                 dev_dbg(dev, "Enabling.\n");
 896
 897                 catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
 898                 catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
 899                 catc_set_reg(catc, LEDCtrl, LEDLink);
 900                 catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
 901         } else {
 902                 dev_dbg(dev, "Performing reset\n");
 903                 catc_reset(catc);
 904                 catc_get_mac(catc, netdev->dev_addr);
 905
 906                 dev_dbg(dev, "Setting RX Mode\n");
 907                 catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
 908                 catc->rxmode[1] = 0;
 909                 f5u011_rxmode(catc, catc->rxmode);
 910         }
 911         dev_dbg(dev, "Init done.\n");
 912         printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n",
 913                netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
 914                usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr);
 915         usb_set_intfdata(intf, catc);
 916
 917         SET_NETDEV_DEV(netdev, &intf->dev);
 918         if (register_netdev(netdev) != 0) {
 919                 usb_set_intfdata(intf, NULL);
 920                 usb_free_urb(catc->ctrl_urb);
 921                 usb_free_urb(catc->tx_urb);
 922                 usb_free_urb(catc->rx_urb);
 923                 usb_free_urb(catc->irq_urb);
 924                 free_netdev(netdev);
 925                 return -EIO;
 926         }
 927         return 0;
 928 }
 929
 930 static void catc_disconnect(struct usb_interface *intf)
 931 {
 932         struct catc *catc = usb_get_intfdata(intf);
 933
 934         usb_set_intfdata(intf, NULL);
 935         if (catc) {
 936                 unregister_netdev(catc->netdev);
 937                 usb_free_urb(catc->ctrl_urb);
 938                 usb_free_urb(catc->tx_urb);
 939                 usb_free_urb(catc->rx_urb);
 940                 usb_free_urb(catc->irq_urb);
 941                 free_netdev(catc->netdev);
 942         }
 943 }
 944
 945 /*
 946  * Module functions and tables.
 947  */
 948
 949 static struct usb_device_id catc_id_table [] = {
 950         { USB_DEVICE(0x0423, 0xa) },    /* CATC Netmate, Belkin F5U011 */
 951         { USB_DEVICE(0x0423, 0xc) },    /* CATC Netmate II, Belkin F5U111 */
 952         { USB_DEVICE(0x08d1, 0x1) },    /* smartBridges smartNIC */
 953         { }
 954 };
 955
 956 MODULE_DEVICE_TABLE(usb, catc_id_table);
 957
 958 static struct usb_driver catc_driver = {
 959         .name =         driver_name,
 960         .probe =        catc_probe,
 961         .disconnect =   catc_disconnect,
 962         .id_table =     catc_id_table,
 963         .disable_hub_initiated_lpm = 1,
 964 };
 965
 966 module_usb_driver(catc_driver);