linux/drivers/net/usb/catc.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  Copyright (c) 2001 Vojtech Pavlik
   4 *
   5 *  CATC EL1210A NetMate USB Ethernet driver
   6 *
   7 *  Sponsored by SuSE
   8 *
   9 *  Based on the work of
  10 *              Donald Becker
  11 * 
  12 *  Old chipset support added by Simon Evans <spse@secret.org.uk> 2002
  13 *    - adds support for Belkin F5U011
  14 */
  15
  16/*
  17 * 
  18 * Should you need to contact me, the author, you can do so either by
  19 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
  20 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  21 */
  22
  23#include <linux/module.h>
  24#include <linux/kernel.h>
  25#include <linux/string.h>
  26#include <linux/netdevice.h>
  27#include <linux/etherdevice.h>
  28#include <linux/skbuff.h>
  29#include <linux/spinlock.h>
  30#include <linux/ethtool.h>
  31#include <linux/crc32.h>
  32#include <linux/bitops.h>
  33#include <linux/gfp.h>
  34#include <linux/uaccess.h>
  35
  36#undef DEBUG
  37
  38#include <linux/usb.h>
  39
  40/*
  41 * Version information.
  42 */
  43
  44#define DRIVER_VERSION "v2.8"
  45#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>"
  46#define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver"
  47#define SHORT_DRIVER_DESC "EL1210A NetMate USB Ethernet"
  48
  49MODULE_AUTHOR(DRIVER_AUTHOR);
  50MODULE_DESCRIPTION(DRIVER_DESC);
  51MODULE_LICENSE("GPL");
  52
  53static const char driver_name[] = "catc";
  54
  55/*
  56 * Some defines.
  57 */ 
  58
  59#define STATS_UPDATE            (HZ)    /* Time between stats updates */
  60#define TX_TIMEOUT              (5*HZ)  /* Max time the queue can be stopped */
  61#define PKT_SZ                  1536    /* Max Ethernet packet size */
  62#define RX_MAX_BURST            15      /* Max packets per rx buffer (> 0, < 16) */
  63#define TX_MAX_BURST            15      /* Max full sized packets per tx buffer (> 0) */
  64#define CTRL_QUEUE              16      /* Max control requests in flight (power of two) */
  65#define RX_PKT_SZ               1600    /* Max size of receive packet for F5U011 */
  66
  67/*
  68 * Control requests.
  69 */
  70
  71enum control_requests {
  72        ReadMem =       0xf1,
  73        GetMac =        0xf2,
  74        Reset =         0xf4,
  75        SetMac =        0xf5,
  76        SetRxMode =     0xf5,  /* F5U011 only */
  77        WriteROM =      0xf8,
  78        SetReg =        0xfa,
  79        GetReg =        0xfb,
  80        WriteMem =      0xfc,
  81        ReadROM =       0xfd,
  82};
  83
  84/*
  85 * Registers.
  86 */
  87
  88enum register_offsets {
  89        TxBufCount =    0x20,
  90        RxBufCount =    0x21,
  91        OpModes =       0x22,
  92        TxQed =         0x23,
  93        RxQed =         0x24,
  94        MaxBurst =      0x25,
  95        RxUnit =        0x60,
  96        EthStatus =     0x61,
  97        StationAddr0 =  0x67,
  98        EthStats =      0x69,
  99        LEDCtrl =       0x81,
 100};
 101
 102enum eth_stats {
 103        TxSingleColl =  0x00,
 104        TxMultiColl =   0x02,
 105        TxExcessColl =  0x04,
 106        RxFramErr =     0x06,
 107};
 108
 109enum op_mode_bits {
 110        Op3MemWaits =   0x03,
 111        OpLenInclude =  0x08,
 112        OpRxMerge =     0x10,
 113        OpTxMerge =     0x20,
 114        OpWin95bugfix = 0x40,
 115        OpLoopback =    0x80,
 116};
 117
 118enum rx_filter_bits {
 119        RxEnable =      0x01,
 120        RxPolarity =    0x02,
 121        RxForceOK =     0x04,
 122        RxMultiCast =   0x08,
 123        RxPromisc =     0x10,
 124        AltRxPromisc =  0x20, /* F5U011 uses different bit */
 125};
 126
 127enum led_values {
 128        LEDFast =       0x01,
 129        LEDSlow =       0x02,
 130        LEDFlash =      0x03,
 131        LEDPulse =      0x04,
 132        LEDLink =       0x08,
 133};
 134
 135enum link_status {
 136        LinkNoChange = 0,
 137        LinkGood     = 1,
 138        LinkBad      = 2
 139};
 140
 141/*
 142 * The catc struct.
 143 */
 144
 145#define CTRL_RUNNING    0
 146#define RX_RUNNING      1
 147#define TX_RUNNING      2
 148
 149struct catc {
 150        struct net_device *netdev;
 151        struct usb_device *usbdev;
 152
 153        unsigned long flags;
 154
 155        unsigned int tx_ptr, tx_idx;
 156        unsigned int ctrl_head, ctrl_tail;
 157        spinlock_t tx_lock, ctrl_lock;
 158
 159        u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)];
 160        u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)];
 161        u8 irq_buf[2];
 162        u8 ctrl_buf[64];
 163        struct usb_ctrlrequest ctrl_dr;
 164
 165        struct timer_list timer;
 166        u8 stats_buf[8];
 167        u16 stats_vals[4];
 168        unsigned long last_stats;
 169
 170        u8 multicast[64];
 171
 172        struct ctrl_queue {
 173                u8 dir;
 174                u8 request;
 175                u16 value;
 176                u16 index;
 177                void *buf;
 178                int len;
 179                void (*callback)(struct catc *catc, struct ctrl_queue *q);
 180        } ctrl_queue[CTRL_QUEUE];
 181
 182        struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb;
 183
 184        u8 is_f5u011;   /* Set if device is an F5U011 */
 185        u8 rxmode[2];   /* Used for F5U011 */
 186        atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */
 187};
 188
 189/*
 190 * Useful macros.
 191 */
 192
 193#define catc_get_mac(catc, mac)                         catc_ctrl_msg(catc, USB_DIR_IN,  GetMac, 0, 0, mac,  6)
 194#define catc_reset(catc)                                catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0)
 195#define catc_set_reg(catc, reg, val)                    catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0)
 196#define catc_get_reg(catc, reg, buf)                    catc_ctrl_msg(catc, USB_DIR_IN,  GetReg, 0, reg, buf, 1)
 197#define catc_write_mem(catc, addr, buf, size)           catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size)
 198#define catc_read_mem(catc, addr, buf, size)            catc_ctrl_msg(catc, USB_DIR_IN,  ReadMem, 0, addr, buf, size)
 199
 200#define f5u011_rxmode(catc, rxmode)                     catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2)
 201#define f5u011_rxmode_async(catc, rxmode)               catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL)
 202#define f5u011_mchash_async(catc, hash)                 catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL)
 203
 204#define catc_set_reg_async(catc, reg, val)              catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL)
 205#define catc_get_reg_async(catc, reg, cb)               catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb)
 206#define catc_write_mem_async(catc, addr, buf, size)     catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL)
 207
 208/*
 209 * Receive routines.
 210 */
 211
 212static void catc_rx_done(struct urb *urb)
 213{
 214        struct catc *catc = urb->context;
 215        u8 *pkt_start = urb->transfer_buffer;
 216        struct sk_buff *skb;
 217        int pkt_len, pkt_offset = 0;
 218        int status = urb->status;
 219
 220        if (!catc->is_f5u011) {
 221                clear_bit(RX_RUNNING, &catc->flags);
 222                pkt_offset = 2;
 223        }
 224
 225        if (status) {
 226                dev_dbg(&urb->dev->dev, "rx_done, status %d, length %d\n",
 227                        status, urb->actual_length);
 228                return;
 229        }
 230
 231        do {
 232                if(!catc->is_f5u011) {
 233                        pkt_len = le16_to_cpup((__le16*)pkt_start);
 234                        if (pkt_len > urb->actual_length) {
 235                                catc->netdev->stats.rx_length_errors++;
 236                                catc->netdev->stats.rx_errors++;
 237                                break;
 238                        }
 239                } else {
 240                        pkt_len = urb->actual_length;
 241                }
 242
 243                if (!(skb = dev_alloc_skb(pkt_len)))
 244                        return;
 245
 246                skb_copy_to_linear_data(skb, pkt_start + pkt_offset, pkt_len);
 247                skb_put(skb, pkt_len);
 248
 249                skb->protocol = eth_type_trans(skb, catc->netdev);
 250                netif_rx(skb);
 251
 252                catc->netdev->stats.rx_packets++;
 253                catc->netdev->stats.rx_bytes += pkt_len;
 254
 255                /* F5U011 only does one packet per RX */
 256                if (catc->is_f5u011)
 257                        break;
 258                pkt_start += (((pkt_len + 1) >> 6) + 1) << 6;
 259
 260        } while (pkt_start - (u8 *) urb->transfer_buffer < urb->actual_length);
 261
 262        if (catc->is_f5u011) {
 263                if (atomic_read(&catc->recq_sz)) {
 264                        int state;
 265                        atomic_dec(&catc->recq_sz);
 266                        netdev_dbg(catc->netdev, "getting extra packet\n");
 267                        urb->dev = catc->usbdev;
 268                        if ((state = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
 269                                netdev_dbg(catc->netdev,
 270                                           "submit(rx_urb) status %d\n", state);
 271                        }
 272                } else {
 273                        clear_bit(RX_RUNNING, &catc->flags);
 274                }
 275        }
 276}
 277
 278static void catc_irq_done(struct urb *urb)
 279{
 280        struct catc *catc = urb->context;
 281        u8 *data = urb->transfer_buffer;
 282        int status = urb->status;
 283        unsigned int hasdata = 0, linksts = LinkNoChange;
 284        int res;
 285
 286        if (!catc->is_f5u011) {
 287                hasdata = data[1] & 0x80;
 288                if (data[1] & 0x40)
 289                        linksts = LinkGood;
 290                else if (data[1] & 0x20)
 291                        linksts = LinkBad;
 292        } else {
 293                hasdata = (unsigned int)(be16_to_cpup((__be16*)data) & 0x0fff);
 294                if (data[0] == 0x90)
 295                        linksts = LinkGood;
 296                else if (data[0] == 0xA0)
 297                        linksts = LinkBad;
 298        }
 299
 300        switch (status) {
 301        case 0:                 /* success */
 302                break;
 303        case -ECONNRESET:       /* unlink */
 304        case -ENOENT:
 305        case -ESHUTDOWN:
 306                return;
 307        /* -EPIPE:  should clear the halt */
 308        default:                /* error */
 309                dev_dbg(&urb->dev->dev,
 310                        "irq_done, status %d, data %02x %02x.\n",
 311                        status, data[0], data[1]);
 312                goto resubmit;
 313        }
 314
 315        if (linksts == LinkGood) {
 316                netif_carrier_on(catc->netdev);
 317                netdev_dbg(catc->netdev, "link ok\n");
 318        }
 319
 320        if (linksts == LinkBad) {
 321                netif_carrier_off(catc->netdev);
 322                netdev_dbg(catc->netdev, "link bad\n");
 323        }
 324
 325        if (hasdata) {
 326                if (test_and_set_bit(RX_RUNNING, &catc->flags)) {
 327                        if (catc->is_f5u011)
 328                                atomic_inc(&catc->recq_sz);
 329                } else {
 330                        catc->rx_urb->dev = catc->usbdev;
 331                        if ((res = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {
 332                                dev_err(&catc->usbdev->dev,
 333                                        "submit(rx_urb) status %d\n", res);
 334                        }
 335                } 
 336        }
 337resubmit:
 338        res = usb_submit_urb (urb, GFP_ATOMIC);
 339        if (res)
 340                dev_err(&catc->usbdev->dev,
 341                        "can't resubmit intr, %s-%s, status %d\n",
 342                        catc->usbdev->bus->bus_name,
 343                        catc->usbdev->devpath, res);
 344}
 345
 346/*
 347 * Transmit routines.
 348 */
 349
 350static int catc_tx_run(struct catc *catc)
 351{
 352        int status;
 353
 354        if (catc->is_f5u011)
 355                catc->tx_ptr = (catc->tx_ptr + 63) & ~63;
 356
 357        catc->tx_urb->transfer_buffer_length = catc->tx_ptr;
 358        catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx];
 359        catc->tx_urb->dev = catc->usbdev;
 360
 361        if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0)
 362                dev_err(&catc->usbdev->dev, "submit(tx_urb), status %d\n",
 363                        status);
 364
 365        catc->tx_idx = !catc->tx_idx;
 366        catc->tx_ptr = 0;
 367
 368        netif_trans_update(catc->netdev);
 369        return status;
 370}
 371
 372static void catc_tx_done(struct urb *urb)
 373{
 374        struct catc *catc = urb->context;
 375        unsigned long flags;
 376        int r, status = urb->status;
 377
 378        if (status == -ECONNRESET) {
 379                dev_dbg(&urb->dev->dev, "Tx Reset.\n");
 380                urb->status = 0;
 381                netif_trans_update(catc->netdev);
 382                catc->netdev->stats.tx_errors++;
 383                clear_bit(TX_RUNNING, &catc->flags);
 384                netif_wake_queue(catc->netdev);
 385                return;
 386        }
 387
 388        if (status) {
 389                dev_dbg(&urb->dev->dev, "tx_done, status %d, length %d\n",
 390                        status, urb->actual_length);
 391                return;
 392        }
 393
 394        spin_lock_irqsave(&catc->tx_lock, flags);
 395
 396        if (catc->tx_ptr) {
 397                r = catc_tx_run(catc);
 398                if (unlikely(r < 0))
 399                        clear_bit(TX_RUNNING, &catc->flags);
 400        } else {
 401                clear_bit(TX_RUNNING, &catc->flags);
 402        }
 403
 404        netif_wake_queue(catc->netdev);
 405
 406        spin_unlock_irqrestore(&catc->tx_lock, flags);
 407}
 408
 409static netdev_tx_t catc_start_xmit(struct sk_buff *skb,
 410                                         struct net_device *netdev)
 411{
 412        struct catc *catc = netdev_priv(netdev);
 413        unsigned long flags;
 414        int r = 0;
 415        char *tx_buf;
 416
 417        spin_lock_irqsave(&catc->tx_lock, flags);
 418
 419        catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
 420        tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
 421        if (catc->is_f5u011)
 422                *(__be16 *)tx_buf = cpu_to_be16(skb->len);
 423        else
 424                *(__le16 *)tx_buf = cpu_to_le16(skb->len);
 425        skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
 426        catc->tx_ptr += skb->len + 2;
 427
 428        if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {
 429                r = catc_tx_run(catc);
 430                if (r < 0)
 431                        clear_bit(TX_RUNNING, &catc->flags);
 432        }
 433
 434        if ((catc->is_f5u011 && catc->tx_ptr) ||
 435            (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
 436                netif_stop_queue(netdev);
 437
 438        spin_unlock_irqrestore(&catc->tx_lock, flags);
 439
 440        if (r >= 0) {
 441                catc->netdev->stats.tx_bytes += skb->len;
 442                catc->netdev->stats.tx_packets++;
 443        }
 444
 445        dev_kfree_skb(skb);
 446
 447        return NETDEV_TX_OK;
 448}
 449
 450static void catc_tx_timeout(struct net_device *netdev, unsigned int txqueue)
 451{
 452        struct catc *catc = netdev_priv(netdev);
 453
 454        dev_warn(&netdev->dev, "Transmit timed out.\n");
 455        usb_unlink_urb(catc->tx_urb);
 456}
 457
 458/*
 459 * Control messages.
 460 */
 461
 462static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
 463{
 464        int retval = usb_control_msg(catc->usbdev,
 465                dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),
 466                 request, 0x40 | dir, value, index, buf, len, 1000);
 467        return retval < 0 ? retval : 0;
 468}
 469
 470static void catc_ctrl_run(struct catc *catc)
 471{
 472        struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;
 473        struct usb_device *usbdev = catc->usbdev;
 474        struct urb *urb = catc->ctrl_urb;
 475        struct usb_ctrlrequest *dr = &catc->ctrl_dr;
 476        int status;
 477
 478        dr->bRequest = q->request;
 479        dr->bRequestType = 0x40 | q->dir;
 480        dr->wValue = cpu_to_le16(q->value);
 481        dr->wIndex = cpu_to_le16(q->index);
 482        dr->wLength = cpu_to_le16(q->len);
 483
 484        urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);
 485        urb->transfer_buffer_length = q->len;
 486        urb->transfer_buffer = catc->ctrl_buf;
 487        urb->setup_packet = (void *) dr;
 488        urb->dev = usbdev;
 489
 490        if (!q->dir && q->buf && q->len)
 491                memcpy(catc->ctrl_buf, q->buf, q->len);
 492
 493        if ((status = usb_submit_urb(catc->ctrl_urb, GFP_ATOMIC)))
 494                dev_err(&catc->usbdev->dev, "submit(ctrl_urb) status %d\n",
 495                        status);
 496}
 497
 498static void catc_ctrl_done(struct urb *urb)
 499{
 500        struct catc *catc = urb->context;
 501        struct ctrl_queue *q;
 502        unsigned long flags;
 503        int status = urb->status;
 504
 505        if (status)
 506                dev_dbg(&urb->dev->dev, "ctrl_done, status %d, len %d.\n",
 507                        status, urb->actual_length);
 508
 509        spin_lock_irqsave(&catc->ctrl_lock, flags);
 510
 511        q = catc->ctrl_queue + catc->ctrl_tail;
 512
 513        if (q->dir) {
 514                if (q->buf && q->len)
 515                        memcpy(q->buf, catc->ctrl_buf, q->len);
 516                else
 517                        q->buf = catc->ctrl_buf;
 518        }
 519
 520        if (q->callback)
 521                q->callback(catc, q);
 522
 523        catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
 524
 525        if (catc->ctrl_head != catc->ctrl_tail)
 526                catc_ctrl_run(catc);
 527        else
 528                clear_bit(CTRL_RUNNING, &catc->flags);
 529
 530        spin_unlock_irqrestore(&catc->ctrl_lock, flags);
 531}
 532
 533static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,
 534        u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))
 535{
 536        struct ctrl_queue *q;
 537        int retval = 0;
 538        unsigned long flags;
 539
 540        spin_lock_irqsave(&catc->ctrl_lock, flags);
 541        
 542        q = catc->ctrl_queue + catc->ctrl_head;
 543
 544        q->dir = dir;
 545        q->request = request;
 546        q->value = value;
 547        q->index = index;
 548        q->buf = buf;
 549        q->len = len;
 550        q->callback = callback;
 551
 552        catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);
 553
 554        if (catc->ctrl_head == catc->ctrl_tail) {
 555                dev_err(&catc->usbdev->dev, "ctrl queue full\n");
 556                catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);
 557                retval = -1;
 558        }
 559
 560        if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))
 561                catc_ctrl_run(catc);
 562
 563        spin_unlock_irqrestore(&catc->ctrl_lock, flags);
 564
 565        return retval;
 566}
 567
 568/*
 569 * Statistics.
 570 */
 571
 572static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)
 573{
 574        int index = q->index - EthStats;
 575        u16 data, last;
 576
 577        catc->stats_buf[index] = *((char *)q->buf);
 578
 579        if (index & 1)
 580                return;
 581
 582        data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];
 583        last = catc->stats_vals[index >> 1];
 584
 585        switch (index) {
 586                case TxSingleColl:
 587                case TxMultiColl:
 588                        catc->netdev->stats.collisions += data - last;
 589                        break;
 590                case TxExcessColl:
 591                        catc->netdev->stats.tx_aborted_errors += data - last;
 592                        catc->netdev->stats.tx_errors += data - last;
 593                        break;
 594                case RxFramErr:
 595                        catc->netdev->stats.rx_frame_errors += data - last;
 596                        catc->netdev->stats.rx_errors += data - last;
 597                        break;
 598        }
 599
 600        catc->stats_vals[index >> 1] = data;
 601}
 602
 603static void catc_stats_timer(struct timer_list *t)
 604{
 605        struct catc *catc = from_timer(catc, t, timer);
 606        int i;
 607
 608        for (i = 0; i < 8; i++)
 609                catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);
 610
 611        mod_timer(&catc->timer, jiffies + STATS_UPDATE);
 612}
 613
 614/*
 615 * Receive modes. Broadcast, Multicast, Promisc.
 616 */
 617
 618static void catc_multicast(unsigned char *addr, u8 *multicast)
 619{
 620        u32 crc;
 621
 622        crc = ether_crc_le(6, addr);
 623        multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
 624}
 625
 626static void catc_set_multicast_list(struct net_device *netdev)
 627{
 628        struct catc *catc = netdev_priv(netdev);
 629        struct netdev_hw_addr *ha;
 630        u8 broadcast[ETH_ALEN];
 631        u8 rx = RxEnable | RxPolarity | RxMultiCast;
 632
 633        eth_broadcast_addr(broadcast);
 634        memset(catc->multicast, 0, 64);
 635
 636        catc_multicast(broadcast, catc->multicast);
 637        catc_multicast(netdev->dev_addr, catc->multicast);
 638
 639        if (netdev->flags & IFF_PROMISC) {
 640                memset(catc->multicast, 0xff, 64);
 641                rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;
 642        } 
 643
 644        if (netdev->flags & IFF_ALLMULTI) {
 645                memset(catc->multicast, 0xff, 64);
 646        } else {
 647                netdev_for_each_mc_addr(ha, netdev) {
 648                        u32 crc = ether_crc_le(6, ha->addr);
 649                        if (!catc->is_f5u011) {
 650                                catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);
 651                        } else {
 652                                catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);
 653                        }
 654                }
 655        }
 656        if (!catc->is_f5u011) {
 657                catc_set_reg_async(catc, RxUnit, rx);
 658                catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);
 659        } else {
 660                f5u011_mchash_async(catc, catc->multicast);
 661                if (catc->rxmode[0] != rx) {
 662                        catc->rxmode[0] = rx;
 663                        netdev_dbg(catc->netdev,
 664                                   "Setting RX mode to %2.2X %2.2X\n",
 665                                   catc->rxmode[0], catc->rxmode[1]);
 666                        f5u011_rxmode_async(catc, catc->rxmode);
 667                }
 668        }
 669}
 670
 671static void catc_get_drvinfo(struct net_device *dev,
 672                             struct ethtool_drvinfo *info)
 673{
 674        struct catc *catc = netdev_priv(dev);
 675        strlcpy(info->driver, driver_name, sizeof(info->driver));
 676        strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
 677        usb_make_path(catc->usbdev, info->bus_info, sizeof(info->bus_info));
 678}
 679
 680static int catc_get_link_ksettings(struct net_device *dev,
 681                                   struct ethtool_link_ksettings *cmd)
 682{
 683        struct catc *catc = netdev_priv(dev);
 684        if (!catc->is_f5u011)
 685                return -EOPNOTSUPP;
 686
 687        ethtool_link_ksettings_zero_link_mode(cmd, supported);
 688        ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);
 689        ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
 690
 691        ethtool_link_ksettings_zero_link_mode(cmd, advertising);
 692        ethtool_link_ksettings_add_link_mode(cmd, advertising, 10baseT_Half);
 693        ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
 694
 695        cmd->base.speed = SPEED_10;
 696        cmd->base.duplex = DUPLEX_HALF;
 697        cmd->base.port = PORT_TP;
 698        cmd->base.phy_address = 0;
 699        cmd->base.autoneg = AUTONEG_DISABLE;
 700
 701        return 0;
 702}
 703
 704static const struct ethtool_ops ops = {
 705        .get_drvinfo = catc_get_drvinfo,
 706        .get_link = ethtool_op_get_link,
 707        .get_link_ksettings = catc_get_link_ksettings,
 708};
 709
 710/*
 711 * Open, close.
 712 */
 713
 714static int catc_open(struct net_device *netdev)
 715{
 716        struct catc *catc = netdev_priv(netdev);
 717        int status;
 718
 719        catc->irq_urb->dev = catc->usbdev;
 720        if ((status = usb_submit_urb(catc->irq_urb, GFP_KERNEL)) < 0) {
 721                dev_err(&catc->usbdev->dev, "submit(irq_urb) status %d\n",
 722                        status);
 723                return -1;
 724        }
 725
 726        netif_start_queue(netdev);
 727
 728        if (!catc->is_f5u011)
 729                mod_timer(&catc->timer, jiffies + STATS_UPDATE);
 730
 731        return 0;
 732}
 733
 734static int catc_stop(struct net_device *netdev)
 735{
 736        struct catc *catc = netdev_priv(netdev);
 737
 738        netif_stop_queue(netdev);
 739
 740        if (!catc->is_f5u011)
 741                del_timer_sync(&catc->timer);
 742
 743        usb_kill_urb(catc->rx_urb);
 744        usb_kill_urb(catc->tx_urb);
 745        usb_kill_urb(catc->irq_urb);
 746        usb_kill_urb(catc->ctrl_urb);
 747
 748        return 0;
 749}
 750
 751static const struct net_device_ops catc_netdev_ops = {
 752        .ndo_open               = catc_open,
 753        .ndo_stop               = catc_stop,
 754        .ndo_start_xmit         = catc_start_xmit,
 755
 756        .ndo_tx_timeout         = catc_tx_timeout,
 757        .ndo_set_rx_mode        = catc_set_multicast_list,
 758        .ndo_set_mac_address    = eth_mac_addr,
 759        .ndo_validate_addr      = eth_validate_addr,
 760};
 761
 762/*
 763 * USB probe, disconnect.
 764 */
 765
 766static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)
 767{
 768        struct device *dev = &intf->dev;
 769        struct usb_device *usbdev = interface_to_usbdev(intf);
 770        struct net_device *netdev;
 771        struct catc *catc;
 772        u8 broadcast[ETH_ALEN];
 773        int pktsz, ret;
 774
 775        if (usb_set_interface(usbdev,
 776                        intf->altsetting->desc.bInterfaceNumber, 1)) {
 777                dev_err(dev, "Can't set altsetting 1.\n");
 778                return -EIO;
 779        }
 780
 781        netdev = alloc_etherdev(sizeof(struct catc));
 782        if (!netdev)
 783                return -ENOMEM;
 784
 785        catc = netdev_priv(netdev);
 786
 787        netdev->netdev_ops = &catc_netdev_ops;
 788        netdev->watchdog_timeo = TX_TIMEOUT;
 789        netdev->ethtool_ops = &ops;
 790
 791        catc->usbdev = usbdev;
 792        catc->netdev = netdev;
 793
 794        spin_lock_init(&catc->tx_lock);
 795        spin_lock_init(&catc->ctrl_lock);
 796
 797        timer_setup(&catc->timer, catc_stats_timer, 0);
 798
 799        catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
 800        catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
 801        catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
 802        catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
 803        if ((!catc->ctrl_urb) || (!catc->tx_urb) || 
 804            (!catc->rx_urb) || (!catc->irq_urb)) {
 805                dev_err(&intf->dev, "No free urbs available.\n");
 806                ret = -ENOMEM;
 807                goto fail_free;
 808        }
 809
 810        /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */
 811        if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 && 
 812            le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&
 813            le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {
 814                dev_dbg(dev, "Testing for f5u011\n");
 815                catc->is_f5u011 = 1;            
 816                atomic_set(&catc->recq_sz, 0);
 817                pktsz = RX_PKT_SZ;
 818        } else {
 819                pktsz = RX_MAX_BURST * (PKT_SZ + 2);
 820        }
 821        
 822        usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),
 823                NULL, NULL, 0, catc_ctrl_done, catc);
 824
 825        usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),
 826                NULL, 0, catc_tx_done, catc);
 827
 828        usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),
 829                catc->rx_buf, pktsz, catc_rx_done, catc);
 830
 831        usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),
 832                catc->irq_buf, 2, catc_irq_done, catc, 1);
 833
 834        if (!catc->is_f5u011) {
 835                u32 *buf;
 836                int i;
 837
 838                dev_dbg(dev, "Checking memory size\n");
 839
 840                buf = kmalloc(4, GFP_KERNEL);
 841                if (!buf) {
 842                        ret = -ENOMEM;
 843                        goto fail_free;
 844                }
 845
 846                *buf = 0x12345678;
 847                catc_write_mem(catc, 0x7a80, buf, 4);
 848                *buf = 0x87654321;
 849                catc_write_mem(catc, 0xfa80, buf, 4);
 850                catc_read_mem(catc, 0x7a80, buf, 4);
 851          
 852                switch (*buf) {
 853                case 0x12345678:
 854                        catc_set_reg(catc, TxBufCount, 8);
 855                        catc_set_reg(catc, RxBufCount, 32);
 856                        dev_dbg(dev, "64k Memory\n");
 857                        break;
 858                default:
 859                        dev_warn(&intf->dev,
 860                                 "Couldn't detect memory size, assuming 32k\n");
 861                        /* fall through */
 862                case 0x87654321:
 863                        catc_set_reg(catc, TxBufCount, 4);
 864                        catc_set_reg(catc, RxBufCount, 16);
 865                        dev_dbg(dev, "32k Memory\n");
 866                        break;
 867                }
 868
 869                kfree(buf);
 870          
 871                dev_dbg(dev, "Getting MAC from SEEROM.\n");
 872          
 873                catc_get_mac(catc, netdev->dev_addr);
 874                
 875                dev_dbg(dev, "Setting MAC into registers.\n");
 876          
 877                for (i = 0; i < 6; i++)
 878                        catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);
 879                
 880                dev_dbg(dev, "Filling the multicast list.\n");
 881          
 882                eth_broadcast_addr(broadcast);
 883                catc_multicast(broadcast, catc->multicast);
 884                catc_multicast(netdev->dev_addr, catc->multicast);
 885                catc_write_mem(catc, 0xfa80, catc->multicast, 64);
 886                
 887                dev_dbg(dev, "Clearing error counters.\n");
 888                
 889                for (i = 0; i < 8; i++)
 890                        catc_set_reg(catc, EthStats + i, 0);
 891                catc->last_stats = jiffies;
 892                
 893                dev_dbg(dev, "Enabling.\n");
 894                
 895                catc_set_reg(catc, MaxBurst, RX_MAX_BURST);
 896                catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);
 897                catc_set_reg(catc, LEDCtrl, LEDLink);
 898                catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);
 899        } else {
 900                dev_dbg(dev, "Performing reset\n");
 901                catc_reset(catc);
 902                catc_get_mac(catc, netdev->dev_addr);
 903                
 904                dev_dbg(dev, "Setting RX Mode\n");
 905                catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
 906                catc->rxmode[1] = 0;
 907                f5u011_rxmode(catc, catc->rxmode);
 908        }
 909        dev_dbg(dev, "Init done.\n");
 910        printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n",
 911               netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",
 912               usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr);
 913        usb_set_intfdata(intf, catc);
 914
 915        SET_NETDEV_DEV(netdev, &intf->dev);
 916        ret = register_netdev(netdev);
 917        if (ret)
 918                goto fail_clear_intfdata;
 919
 920        return 0;
 921
 922fail_clear_intfdata:
 923        usb_set_intfdata(intf, NULL);
 924fail_free:
 925        usb_free_urb(catc->ctrl_urb);
 926        usb_free_urb(catc->tx_urb);
 927        usb_free_urb(catc->rx_urb);
 928        usb_free_urb(catc->irq_urb);
 929        free_netdev(netdev);
 930        return ret;
 931}
 932
 933static void catc_disconnect(struct usb_interface *intf)
 934{
 935        struct catc *catc = usb_get_intfdata(intf);
 936
 937        usb_set_intfdata(intf, NULL);
 938        if (catc) {
 939                unregister_netdev(catc->netdev);
 940                usb_free_urb(catc->ctrl_urb);
 941                usb_free_urb(catc->tx_urb);
 942                usb_free_urb(catc->rx_urb);
 943                usb_free_urb(catc->irq_urb);
 944                free_netdev(catc->netdev);
 945        }
 946}
 947
 948/*
 949 * Module functions and tables.
 950 */
 951
 952static const struct usb_device_id catc_id_table[] = {
 953        { USB_DEVICE(0x0423, 0xa) },    /* CATC Netmate, Belkin F5U011 */
 954        { USB_DEVICE(0x0423, 0xc) },    /* CATC Netmate II, Belkin F5U111 */
 955        { USB_DEVICE(0x08d1, 0x1) },    /* smartBridges smartNIC */
 956        { }
 957};
 958
 959MODULE_DEVICE_TABLE(usb, catc_id_table);
 960
 961static struct usb_driver catc_driver = {
 962        .name =         driver_name,
 963        .probe =        catc_probe,
 964        .disconnect =   catc_disconnect,
 965        .id_table =     catc_id_table,
 966        .disable_hub_initiated_lpm = 1,
 967};
 968
 969module_usb_driver(catc_driver);
 970