linux/drivers/net/usb/pegasus.c
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   1/*
   2 *  Copyright (c) 1999-2013 Petko Manolov (petkan@nucleusys.com)
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License version 2 as
   6 * published by the Free Software Foundation.
   7 *
   8 *      ChangeLog:
   9 *              ....    Most of the time spent on reading sources & docs.
  10 *              v0.2.x  First official release for the Linux kernel.
  11 *              v0.3.0  Beutified and structured, some bugs fixed.
  12 *              v0.3.x  URBifying bulk requests and bugfixing. First relatively
  13 *                      stable release. Still can touch device's registers only
  14 *                      from top-halves.
  15 *              v0.4.0  Control messages remained unurbified are now URBs.
  16 *                      Now we can touch the HW at any time.
  17 *              v0.4.9  Control urbs again use process context to wait. Argh...
  18 *                      Some long standing bugs (enable_net_traffic) fixed.
  19 *                      Also nasty trick about resubmiting control urb from
  20 *                      interrupt context used. Please let me know how it
  21 *                      behaves. Pegasus II support added since this version.
  22 *                      TODO: suppressing HCD warnings spewage on disconnect.
  23 *              v0.4.13 Ethernet address is now set at probe(), not at open()
  24 *                      time as this seems to break dhcpd.
  25 *              v0.5.0  branch to 2.5.x kernels
  26 *              v0.5.1  ethtool support added
  27 *              v0.5.5  rx socket buffers are in a pool and the their allocation
  28 *                      is out of the interrupt routine.
  29 *              ...
  30 *              v0.9.3  simplified [get|set]_register(s), async update registers
  31 *                      logic revisited, receive skb_pool removed.
  32 */
  33
  34#include <linux/sched.h>
  35#include <linux/slab.h>
  36#include <linux/init.h>
  37#include <linux/delay.h>
  38#include <linux/netdevice.h>
  39#include <linux/etherdevice.h>
  40#include <linux/ethtool.h>
  41#include <linux/mii.h>
  42#include <linux/usb.h>
  43#include <linux/module.h>
  44#include <asm/byteorder.h>
  45#include <asm/uaccess.h>
  46#include "pegasus.h"
  47
  48/*
  49 * Version Information
  50 */
  51#define DRIVER_VERSION "v0.9.3 (2013/04/25)"
  52#define DRIVER_AUTHOR "Petko Manolov <petkan@nucleusys.com>"
  53#define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
  54
  55static const char driver_name[] = "pegasus";
  56
  57#undef  PEGASUS_WRITE_EEPROM
  58#define BMSR_MEDIA      (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
  59                        BMSR_100FULL | BMSR_ANEGCAPABLE)
  60
  61static bool loopback;
  62static bool mii_mode;
  63static char *devid;
  64
  65static struct usb_eth_dev usb_dev_id[] = {
  66#define PEGASUS_DEV(pn, vid, pid, flags)        \
  67        {.name = pn, .vendor = vid, .device = pid, .private = flags},
  68#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
  69        PEGASUS_DEV(pn, vid, pid, flags)
  70#include "pegasus.h"
  71#undef  PEGASUS_DEV
  72#undef  PEGASUS_DEV_CLASS
  73        {NULL, 0, 0, 0},
  74        {NULL, 0, 0, 0}
  75};
  76
  77static struct usb_device_id pegasus_ids[] = {
  78#define PEGASUS_DEV(pn, vid, pid, flags) \
  79        {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
  80/*
  81 * The Belkin F8T012xx1 bluetooth adaptor has the same vendor and product
  82 * IDs as the Belkin F5D5050, so we need to teach the pegasus driver to
  83 * ignore adaptors belonging to the "Wireless" class 0xE0. For this one
  84 * case anyway, seeing as the pegasus is for "Wired" adaptors.
  85 */
  86#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
  87        {.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_CLASS), \
  88        .idVendor = vid, .idProduct = pid, .bDeviceClass = dclass},
  89#include "pegasus.h"
  90#undef  PEGASUS_DEV
  91#undef  PEGASUS_DEV_CLASS
  92        {},
  93        {}
  94};
  95
  96MODULE_AUTHOR(DRIVER_AUTHOR);
  97MODULE_DESCRIPTION(DRIVER_DESC);
  98MODULE_LICENSE("GPL");
  99module_param(loopback, bool, 0);
 100module_param(mii_mode, bool, 0);
 101module_param(devid, charp, 0);
 102MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
 103MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
 104MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
 105
 106/* use ethtool to change the level for any given device */
 107static int msg_level = -1;
 108module_param(msg_level, int, 0);
 109MODULE_PARM_DESC(msg_level, "Override default message level");
 110
 111MODULE_DEVICE_TABLE(usb, pegasus_ids);
 112static const struct net_device_ops pegasus_netdev_ops;
 113
 114/*****/
 115
 116static void async_ctrl_callback(struct urb *urb)
 117{
 118        struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
 119        int status = urb->status;
 120
 121        if (status < 0)
 122                dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status);
 123        kfree(req);
 124        usb_free_urb(urb);
 125}
 126
 127static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *data)
 128{
 129        int ret;
 130
 131        ret = usb_control_msg(pegasus->usb, usb_rcvctrlpipe(pegasus->usb, 0),
 132                              PEGASUS_REQ_GET_REGS, PEGASUS_REQT_READ, 0,
 133                              indx, data, size, 1000);
 134        if (ret < 0)
 135                netif_dbg(pegasus, drv, pegasus->net,
 136                          "%s returned %d\n", __func__, ret);
 137        return ret;
 138}
 139
 140static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *data)
 141{
 142        int ret;
 143
 144        ret = usb_control_msg(pegasus->usb, usb_sndctrlpipe(pegasus->usb, 0),
 145                              PEGASUS_REQ_SET_REGS, PEGASUS_REQT_WRITE, 0,
 146                              indx, data, size, 100);
 147        if (ret < 0)
 148                netif_dbg(pegasus, drv, pegasus->net,
 149                          "%s returned %d\n", __func__, ret);
 150        return ret;
 151}
 152
 153static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data)
 154{
 155        int ret;
 156
 157        ret = usb_control_msg(pegasus->usb, usb_sndctrlpipe(pegasus->usb, 0),
 158                              PEGASUS_REQ_SET_REG, PEGASUS_REQT_WRITE, data,
 159                              indx, &data, 1, 1000);
 160        if (ret < 0)
 161                netif_dbg(pegasus, drv, pegasus->net,
 162                          "%s returned %d\n", __func__, ret);
 163        return ret;
 164}
 165
 166static int update_eth_regs_async(pegasus_t *pegasus)
 167{
 168        int ret = -ENOMEM;
 169        struct urb *async_urb;
 170        struct usb_ctrlrequest *req;
 171
 172        req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
 173        if (req == NULL)
 174                return ret;
 175
 176        async_urb = usb_alloc_urb(0, GFP_ATOMIC);
 177        if (async_urb == NULL) {
 178                kfree(req);
 179                return ret;
 180        }
 181        req->bRequestType = PEGASUS_REQT_WRITE;
 182        req->bRequest = PEGASUS_REQ_SET_REGS;
 183        req->wValue = cpu_to_le16(0);
 184        req->wIndex = cpu_to_le16(EthCtrl0);
 185        req->wLength = cpu_to_le16(3);
 186
 187        usb_fill_control_urb(async_urb, pegasus->usb,
 188                             usb_sndctrlpipe(pegasus->usb, 0), (void *)req,
 189                             pegasus->eth_regs, 3, async_ctrl_callback, req);
 190
 191        ret = usb_submit_urb(async_urb, GFP_ATOMIC);
 192        if (ret) {
 193                if (ret == -ENODEV)
 194                        netif_device_detach(pegasus->net);
 195                netif_err(pegasus, drv, pegasus->net,
 196                          "%s returned %d\n", __func__, ret);
 197        }
 198        return ret;
 199}
 200
 201static int __mii_op(pegasus_t *p, __u8 phy, __u8 indx, __u16 *regd, __u8 cmd)
 202{
 203        int i;
 204        __u8 data[4] = { phy, 0, 0, indx };
 205        __le16 regdi;
 206        int ret = -ETIMEDOUT;
 207
 208        if (cmd & PHY_WRITE) {
 209                __le16 *t = (__le16 *) & data[1];
 210                *t = cpu_to_le16(*regd);
 211        }
 212        set_register(p, PhyCtrl, 0);
 213        set_registers(p, PhyAddr, sizeof(data), data);
 214        set_register(p, PhyCtrl, (indx | cmd));
 215        for (i = 0; i < REG_TIMEOUT; i++) {
 216                ret = get_registers(p, PhyCtrl, 1, data);
 217                if (ret < 0)
 218                        goto fail;
 219                if (data[0] & PHY_DONE)
 220                        break;
 221        }
 222        if (i >= REG_TIMEOUT)
 223                goto fail;
 224        if (cmd & PHY_READ) {
 225                ret = get_registers(p, PhyData, 2, &regdi);
 226                *regd = le16_to_cpu(regdi);
 227                return ret;
 228        }
 229        return 0;
 230fail:
 231        netif_dbg(p, drv, p->net, "%s failed\n", __func__);
 232        return ret;
 233}
 234
 235/* Returns non-negative int on success, error on failure */
 236static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
 237{
 238        return __mii_op(pegasus, phy, indx, regd, PHY_READ);
 239}
 240
 241/* Returns zero on success, error on failure */
 242static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
 243{
 244        return __mii_op(pegasus, phy, indx, regd, PHY_WRITE);
 245}
 246
 247static int mdio_read(struct net_device *dev, int phy_id, int loc)
 248{
 249        pegasus_t *pegasus = netdev_priv(dev);
 250        u16 res;
 251
 252        read_mii_word(pegasus, phy_id, loc, &res);
 253        return (int)res;
 254}
 255
 256static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
 257{
 258        pegasus_t *pegasus = netdev_priv(dev);
 259        u16 data = val;
 260
 261        write_mii_word(pegasus, phy_id, loc, &data);
 262}
 263
 264static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
 265{
 266        int i;
 267        __u8 tmp;
 268        __le16 retdatai;
 269        int ret;
 270
 271        set_register(pegasus, EpromCtrl, 0);
 272        set_register(pegasus, EpromOffset, index);
 273        set_register(pegasus, EpromCtrl, EPROM_READ);
 274
 275        for (i = 0; i < REG_TIMEOUT; i++) {
 276                ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
 277                if (tmp & EPROM_DONE)
 278                        break;
 279                if (ret == -ESHUTDOWN)
 280                        goto fail;
 281        }
 282        if (i >= REG_TIMEOUT)
 283                goto fail;
 284
 285        ret = get_registers(pegasus, EpromData, 2, &retdatai);
 286        *retdata = le16_to_cpu(retdatai);
 287        return ret;
 288
 289fail:
 290        netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
 291        return -ETIMEDOUT;
 292}
 293
 294#ifdef  PEGASUS_WRITE_EEPROM
 295static inline void enable_eprom_write(pegasus_t *pegasus)
 296{
 297        __u8 tmp;
 298
 299        get_registers(pegasus, EthCtrl2, 1, &tmp);
 300        set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
 301}
 302
 303static inline void disable_eprom_write(pegasus_t *pegasus)
 304{
 305        __u8 tmp;
 306
 307        get_registers(pegasus, EthCtrl2, 1, &tmp);
 308        set_register(pegasus, EpromCtrl, 0);
 309        set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
 310}
 311
 312static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data)
 313{
 314        int i;
 315        __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
 316        int ret;
 317        __le16 le_data = cpu_to_le16(data);
 318
 319        set_registers(pegasus, EpromOffset, 4, d);
 320        enable_eprom_write(pegasus);
 321        set_register(pegasus, EpromOffset, index);
 322        set_registers(pegasus, EpromData, 2, &le_data);
 323        set_register(pegasus, EpromCtrl, EPROM_WRITE);
 324
 325        for (i = 0; i < REG_TIMEOUT; i++) {
 326                ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
 327                if (ret == -ESHUTDOWN)
 328                        goto fail;
 329                if (tmp & EPROM_DONE)
 330                        break;
 331        }
 332        disable_eprom_write(pegasus);
 333        if (i >= REG_TIMEOUT)
 334                goto fail;
 335
 336        return ret;
 337
 338fail:
 339        netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
 340        return -ETIMEDOUT;
 341}
 342#endif                          /* PEGASUS_WRITE_EEPROM */
 343
 344static inline void get_node_id(pegasus_t *pegasus, __u8 *id)
 345{
 346        int i;
 347        __u16 w16;
 348
 349        for (i = 0; i < 3; i++) {
 350                read_eprom_word(pegasus, i, &w16);
 351                ((__le16 *) id)[i] = cpu_to_le16(w16);
 352        }
 353}
 354
 355static void set_ethernet_addr(pegasus_t *pegasus)
 356{
 357        __u8 node_id[6];
 358
 359        if (pegasus->features & PEGASUS_II) {
 360                get_registers(pegasus, 0x10, sizeof(node_id), node_id);
 361        } else {
 362                get_node_id(pegasus, node_id);
 363                set_registers(pegasus, EthID, sizeof(node_id), node_id);
 364        }
 365        memcpy(pegasus->net->dev_addr, node_id, sizeof(node_id));
 366}
 367
 368static inline int reset_mac(pegasus_t *pegasus)
 369{
 370        __u8 data = 0x8;
 371        int i;
 372
 373        set_register(pegasus, EthCtrl1, data);
 374        for (i = 0; i < REG_TIMEOUT; i++) {
 375                get_registers(pegasus, EthCtrl1, 1, &data);
 376                if (~data & 0x08) {
 377                        if (loopback)
 378                                break;
 379                        if (mii_mode && (pegasus->features & HAS_HOME_PNA))
 380                                set_register(pegasus, Gpio1, 0x34);
 381                        else
 382                                set_register(pegasus, Gpio1, 0x26);
 383                        set_register(pegasus, Gpio0, pegasus->features);
 384                        set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
 385                        break;
 386                }
 387        }
 388        if (i == REG_TIMEOUT)
 389                return -ETIMEDOUT;
 390
 391        if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
 392            usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
 393                set_register(pegasus, Gpio0, 0x24);
 394                set_register(pegasus, Gpio0, 0x26);
 395        }
 396        if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
 397                __u16 auxmode;
 398                read_mii_word(pegasus, 3, 0x1b, &auxmode);
 399                auxmode |= 4;
 400                write_mii_word(pegasus, 3, 0x1b, &auxmode);
 401        }
 402
 403        return 0;
 404}
 405
 406static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
 407{
 408        __u16 linkpart;
 409        __u8 data[4];
 410        pegasus_t *pegasus = netdev_priv(dev);
 411        int ret;
 412
 413        read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
 414        data[0] = 0xc9;
 415        data[1] = 0;
 416        if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
 417                data[1] |= 0x20;        /* set full duplex */
 418        if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
 419                data[1] |= 0x10;        /* set 100 Mbps */
 420        if (mii_mode)
 421                data[1] = 0;
 422        data[2] = loopback ? 0x09 : 0x01;
 423
 424        memcpy(pegasus->eth_regs, data, sizeof(data));
 425        ret = set_registers(pegasus, EthCtrl0, 3, data);
 426
 427        if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
 428            usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
 429            usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
 430                u16 auxmode;
 431                read_mii_word(pegasus, 0, 0x1b, &auxmode);
 432                auxmode |= 4;
 433                write_mii_word(pegasus, 0, 0x1b, &auxmode);
 434        }
 435
 436        return ret;
 437}
 438
 439static void read_bulk_callback(struct urb *urb)
 440{
 441        pegasus_t *pegasus = urb->context;
 442        struct net_device *net;
 443        int rx_status, count = urb->actual_length;
 444        int status = urb->status;
 445        u8 *buf = urb->transfer_buffer;
 446        __u16 pkt_len;
 447
 448        if (!pegasus)
 449                return;
 450
 451        net = pegasus->net;
 452        if (!netif_device_present(net) || !netif_running(net))
 453                return;
 454
 455        switch (status) {
 456        case 0:
 457                break;
 458        case -ETIME:
 459                netif_dbg(pegasus, rx_err, net, "reset MAC\n");
 460                pegasus->flags &= ~PEGASUS_RX_BUSY;
 461                break;
 462        case -EPIPE:            /* stall, or disconnect from TT */
 463                /* FIXME schedule work to clear the halt */
 464                netif_warn(pegasus, rx_err, net, "no rx stall recovery\n");
 465                return;
 466        case -ENOENT:
 467        case -ECONNRESET:
 468        case -ESHUTDOWN:
 469                netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status);
 470                return;
 471        default:
 472                netif_dbg(pegasus, rx_err, net, "RX status %d\n", status);
 473                goto goon;
 474        }
 475
 476        if (!count || count < 4)
 477                goto goon;
 478
 479        rx_status = buf[count - 2];
 480        if (rx_status & 0x1e) {
 481                netif_dbg(pegasus, rx_err, net,
 482                          "RX packet error %x\n", rx_status);
 483                pegasus->stats.rx_errors++;
 484                if (rx_status & 0x06)   /* long or runt */
 485                        pegasus->stats.rx_length_errors++;
 486                if (rx_status & 0x08)
 487                        pegasus->stats.rx_crc_errors++;
 488                if (rx_status & 0x10)   /* extra bits   */
 489                        pegasus->stats.rx_frame_errors++;
 490                goto goon;
 491        }
 492        if (pegasus->chip == 0x8513) {
 493                pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
 494                pkt_len &= 0x0fff;
 495                pegasus->rx_skb->data += 2;
 496        } else {
 497                pkt_len = buf[count - 3] << 8;
 498                pkt_len += buf[count - 4];
 499                pkt_len &= 0xfff;
 500                pkt_len -= 8;
 501        }
 502
 503        /*
 504         * If the packet is unreasonably long, quietly drop it rather than
 505         * kernel panicing by calling skb_put.
 506         */
 507        if (pkt_len > PEGASUS_MTU)
 508                goto goon;
 509
 510        /*
 511         * at this point we are sure pegasus->rx_skb != NULL
 512         * so we go ahead and pass up the packet.
 513         */
 514        skb_put(pegasus->rx_skb, pkt_len);
 515        pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
 516        netif_rx(pegasus->rx_skb);
 517        pegasus->stats.rx_packets++;
 518        pegasus->stats.rx_bytes += pkt_len;
 519
 520        if (pegasus->flags & PEGASUS_UNPLUG)
 521                return;
 522
 523        pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, PEGASUS_MTU,
 524                                                      GFP_ATOMIC);
 525
 526        if (pegasus->rx_skb == NULL)
 527                goto tl_sched;
 528goon:
 529        usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
 530                          usb_rcvbulkpipe(pegasus->usb, 1),
 531                          pegasus->rx_skb->data, PEGASUS_MTU + 8,
 532                          read_bulk_callback, pegasus);
 533        rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
 534        if (rx_status == -ENODEV)
 535                netif_device_detach(pegasus->net);
 536        else if (rx_status) {
 537                pegasus->flags |= PEGASUS_RX_URB_FAIL;
 538                goto tl_sched;
 539        } else {
 540                pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
 541        }
 542
 543        return;
 544
 545tl_sched:
 546        tasklet_schedule(&pegasus->rx_tl);
 547}
 548
 549static void rx_fixup(unsigned long data)
 550{
 551        pegasus_t *pegasus;
 552        int status;
 553
 554        pegasus = (pegasus_t *) data;
 555        if (pegasus->flags & PEGASUS_UNPLUG)
 556                return;
 557
 558        if (pegasus->flags & PEGASUS_RX_URB_FAIL)
 559                if (pegasus->rx_skb)
 560                        goto try_again;
 561        if (pegasus->rx_skb == NULL)
 562                pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
 563                                                              PEGASUS_MTU,
 564                                                              GFP_ATOMIC);
 565        if (pegasus->rx_skb == NULL) {
 566                netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n");
 567                tasklet_schedule(&pegasus->rx_tl);
 568                return;
 569        }
 570        usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
 571                          usb_rcvbulkpipe(pegasus->usb, 1),
 572                          pegasus->rx_skb->data, PEGASUS_MTU + 8,
 573                          read_bulk_callback, pegasus);
 574try_again:
 575        status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
 576        if (status == -ENODEV)
 577                netif_device_detach(pegasus->net);
 578        else if (status) {
 579                pegasus->flags |= PEGASUS_RX_URB_FAIL;
 580                tasklet_schedule(&pegasus->rx_tl);
 581        } else {
 582                pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
 583        }
 584}
 585
 586static void write_bulk_callback(struct urb *urb)
 587{
 588        pegasus_t *pegasus = urb->context;
 589        struct net_device *net;
 590        int status = urb->status;
 591
 592        if (!pegasus)
 593                return;
 594
 595        net = pegasus->net;
 596
 597        if (!netif_device_present(net) || !netif_running(net))
 598                return;
 599
 600        switch (status) {
 601        case -EPIPE:
 602                /* FIXME schedule_work() to clear the tx halt */
 603                netif_stop_queue(net);
 604                netif_warn(pegasus, tx_err, net, "no tx stall recovery\n");
 605                return;
 606        case -ENOENT:
 607        case -ECONNRESET:
 608        case -ESHUTDOWN:
 609                netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status);
 610                return;
 611        default:
 612                netif_info(pegasus, tx_err, net, "TX status %d\n", status);
 613                /* FALL THROUGH */
 614        case 0:
 615                break;
 616        }
 617
 618        net->trans_start = jiffies; /* prevent tx timeout */
 619        netif_wake_queue(net);
 620}
 621
 622static void intr_callback(struct urb *urb)
 623{
 624        pegasus_t *pegasus = urb->context;
 625        struct net_device *net;
 626        int res, status = urb->status;
 627
 628        if (!pegasus)
 629                return;
 630        net = pegasus->net;
 631
 632        switch (status) {
 633        case 0:
 634                break;
 635        case -ECONNRESET:       /* unlink */
 636        case -ENOENT:
 637        case -ESHUTDOWN:
 638                return;
 639        default:
 640                /* some Pegasus-I products report LOTS of data
 641                 * toggle errors... avoid log spamming
 642                 */
 643                netif_dbg(pegasus, timer, net, "intr status %d\n", status);
 644        }
 645
 646        if (urb->actual_length >= 6) {
 647                u8 *d = urb->transfer_buffer;
 648
 649                /* byte 0 == tx_status1, reg 2B */
 650                if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
 651                                        |LATE_COL|JABBER_TIMEOUT)) {
 652                        pegasus->stats.tx_errors++;
 653                        if (d[0] & TX_UNDERRUN)
 654                                pegasus->stats.tx_fifo_errors++;
 655                        if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
 656                                pegasus->stats.tx_aborted_errors++;
 657                        if (d[0] & LATE_COL)
 658                                pegasus->stats.tx_window_errors++;
 659                }
 660
 661                /* d[5].LINK_STATUS lies on some adapters.
 662                 * d[0].NO_CARRIER kicks in only with failed TX.
 663                 * ... so monitoring with MII may be safest.
 664                 */
 665
 666                /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
 667                pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
 668        }
 669
 670        res = usb_submit_urb(urb, GFP_ATOMIC);
 671        if (res == -ENODEV)
 672                netif_device_detach(pegasus->net);
 673        if (res)
 674                netif_err(pegasus, timer, net,
 675                          "can't resubmit interrupt urb, %d\n", res);
 676}
 677
 678static void pegasus_tx_timeout(struct net_device *net)
 679{
 680        pegasus_t *pegasus = netdev_priv(net);
 681        netif_warn(pegasus, timer, net, "tx timeout\n");
 682        usb_unlink_urb(pegasus->tx_urb);
 683        pegasus->stats.tx_errors++;
 684}
 685
 686static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb,
 687                                            struct net_device *net)
 688{
 689        pegasus_t *pegasus = netdev_priv(net);
 690        int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
 691        int res;
 692        __u16 l16 = skb->len;
 693
 694        netif_stop_queue(net);
 695
 696        ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
 697        skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
 698        usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
 699                          usb_sndbulkpipe(pegasus->usb, 2),
 700                          pegasus->tx_buff, count,
 701                          write_bulk_callback, pegasus);
 702        if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
 703                netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res);
 704                switch (res) {
 705                case -EPIPE:            /* stall, or disconnect from TT */
 706                        /* cleanup should already have been scheduled */
 707                        break;
 708                case -ENODEV:           /* disconnect() upcoming */
 709                case -EPERM:
 710                        netif_device_detach(pegasus->net);
 711                        break;
 712                default:
 713                        pegasus->stats.tx_errors++;
 714                        netif_start_queue(net);
 715                }
 716        } else {
 717                pegasus->stats.tx_packets++;
 718                pegasus->stats.tx_bytes += skb->len;
 719        }
 720        dev_kfree_skb(skb);
 721
 722        return NETDEV_TX_OK;
 723}
 724
 725static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
 726{
 727        return &((pegasus_t *) netdev_priv(dev))->stats;
 728}
 729
 730static inline void disable_net_traffic(pegasus_t *pegasus)
 731{
 732        __le16 tmp = cpu_to_le16(0);
 733
 734        set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp);
 735}
 736
 737static inline void get_interrupt_interval(pegasus_t *pegasus)
 738{
 739        u16 data;
 740        u8 interval;
 741
 742        read_eprom_word(pegasus, 4, &data);
 743        interval = data >> 8;
 744        if (pegasus->usb->speed != USB_SPEED_HIGH) {
 745                if (interval < 0x80) {
 746                        netif_info(pegasus, timer, pegasus->net,
 747                                   "intr interval changed from %ums to %ums\n",
 748                                   interval, 0x80);
 749                        interval = 0x80;
 750                        data = (data & 0x00FF) | ((u16)interval << 8);
 751#ifdef PEGASUS_WRITE_EEPROM
 752                        write_eprom_word(pegasus, 4, data);
 753#endif
 754                }
 755        }
 756        pegasus->intr_interval = interval;
 757}
 758
 759static void set_carrier(struct net_device *net)
 760{
 761        pegasus_t *pegasus = netdev_priv(net);
 762        u16 tmp;
 763
 764        if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
 765                return;
 766
 767        if (tmp & BMSR_LSTATUS)
 768                netif_carrier_on(net);
 769        else
 770                netif_carrier_off(net);
 771}
 772
 773static void free_all_urbs(pegasus_t *pegasus)
 774{
 775        usb_free_urb(pegasus->intr_urb);
 776        usb_free_urb(pegasus->tx_urb);
 777        usb_free_urb(pegasus->rx_urb);
 778}
 779
 780static void unlink_all_urbs(pegasus_t *pegasus)
 781{
 782        usb_kill_urb(pegasus->intr_urb);
 783        usb_kill_urb(pegasus->tx_urb);
 784        usb_kill_urb(pegasus->rx_urb);
 785}
 786
 787static int alloc_urbs(pegasus_t *pegasus)
 788{
 789        int res = -ENOMEM;
 790
 791        pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
 792        if (!pegasus->rx_urb) {
 793                return res;
 794        }
 795        pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
 796        if (!pegasus->tx_urb) {
 797                usb_free_urb(pegasus->rx_urb);
 798                return res;
 799        }
 800        pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
 801        if (!pegasus->intr_urb) {
 802                usb_free_urb(pegasus->tx_urb);
 803                usb_free_urb(pegasus->rx_urb);
 804                return res;
 805        }
 806
 807        return 0;
 808}
 809
 810static int pegasus_open(struct net_device *net)
 811{
 812        pegasus_t *pegasus = netdev_priv(net);
 813        int res=-ENOMEM;
 814
 815        if (pegasus->rx_skb == NULL)
 816                pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
 817                                                              PEGASUS_MTU,
 818                                                              GFP_KERNEL);
 819        if (!pegasus->rx_skb)
 820                goto exit;
 821
 822        res = set_registers(pegasus, EthID, 6, net->dev_addr);
 823
 824        usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
 825                          usb_rcvbulkpipe(pegasus->usb, 1),
 826                          pegasus->rx_skb->data, PEGASUS_MTU + 8,
 827                          read_bulk_callback, pegasus);
 828        if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
 829                if (res == -ENODEV)
 830                        netif_device_detach(pegasus->net);
 831                netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res);
 832                goto exit;
 833        }
 834
 835        usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
 836                         usb_rcvintpipe(pegasus->usb, 3),
 837                         pegasus->intr_buff, sizeof(pegasus->intr_buff),
 838                         intr_callback, pegasus, pegasus->intr_interval);
 839        if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
 840                if (res == -ENODEV)
 841                        netif_device_detach(pegasus->net);
 842                netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res);
 843                usb_kill_urb(pegasus->rx_urb);
 844                goto exit;
 845        }
 846        res = enable_net_traffic(net, pegasus->usb);
 847        if (res < 0) {
 848                netif_dbg(pegasus, ifup, net,
 849                          "can't enable_net_traffic() - %d\n", res);
 850                res = -EIO;
 851                usb_kill_urb(pegasus->rx_urb);
 852                usb_kill_urb(pegasus->intr_urb);
 853                goto exit;
 854        }
 855        set_carrier(net);
 856        netif_start_queue(net);
 857        netif_dbg(pegasus, ifup, net, "open\n");
 858        res = 0;
 859exit:
 860        return res;
 861}
 862
 863static int pegasus_close(struct net_device *net)
 864{
 865        pegasus_t *pegasus = netdev_priv(net);
 866
 867        netif_stop_queue(net);
 868        if (!(pegasus->flags & PEGASUS_UNPLUG))
 869                disable_net_traffic(pegasus);
 870        tasklet_kill(&pegasus->rx_tl);
 871        unlink_all_urbs(pegasus);
 872
 873        return 0;
 874}
 875
 876static void pegasus_get_drvinfo(struct net_device *dev,
 877                                struct ethtool_drvinfo *info)
 878{
 879        pegasus_t *pegasus = netdev_priv(dev);
 880
 881        strlcpy(info->driver, driver_name, sizeof(info->driver));
 882        strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
 883        usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info));
 884}
 885
 886/* also handles three patterns of some kind in hardware */
 887#define WOL_SUPPORTED   (WAKE_MAGIC|WAKE_PHY)
 888
 889static void
 890pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 891{
 892        pegasus_t       *pegasus = netdev_priv(dev);
 893
 894        wol->supported = WAKE_MAGIC | WAKE_PHY;
 895        wol->wolopts = pegasus->wolopts;
 896}
 897
 898static int
 899pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 900{
 901        pegasus_t       *pegasus = netdev_priv(dev);
 902        u8              reg78 = 0x04;
 903        int             ret;
 904
 905        if (wol->wolopts & ~WOL_SUPPORTED)
 906                return -EINVAL;
 907
 908        if (wol->wolopts & WAKE_MAGIC)
 909                reg78 |= 0x80;
 910        if (wol->wolopts & WAKE_PHY)
 911                reg78 |= 0x40;
 912        /* FIXME this 0x10 bit still needs to get set in the chip... */
 913        if (wol->wolopts)
 914                pegasus->eth_regs[0] |= 0x10;
 915        else
 916                pegasus->eth_regs[0] &= ~0x10;
 917        pegasus->wolopts = wol->wolopts;
 918
 919        ret = set_register(pegasus, WakeupControl, reg78);
 920        if (!ret)
 921                ret = device_set_wakeup_enable(&pegasus->usb->dev,
 922                                                wol->wolopts);
 923        return ret;
 924}
 925
 926static inline void pegasus_reset_wol(struct net_device *dev)
 927{
 928        struct ethtool_wolinfo wol;
 929
 930        memset(&wol, 0, sizeof wol);
 931        (void) pegasus_set_wol(dev, &wol);
 932}
 933
 934static int
 935pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
 936{
 937        pegasus_t *pegasus;
 938
 939        pegasus = netdev_priv(dev);
 940        mii_ethtool_gset(&pegasus->mii, ecmd);
 941        return 0;
 942}
 943
 944static int
 945pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
 946{
 947        pegasus_t *pegasus = netdev_priv(dev);
 948        return mii_ethtool_sset(&pegasus->mii, ecmd);
 949}
 950
 951static int pegasus_nway_reset(struct net_device *dev)
 952{
 953        pegasus_t *pegasus = netdev_priv(dev);
 954        return mii_nway_restart(&pegasus->mii);
 955}
 956
 957static u32 pegasus_get_link(struct net_device *dev)
 958{
 959        pegasus_t *pegasus = netdev_priv(dev);
 960        return mii_link_ok(&pegasus->mii);
 961}
 962
 963static u32 pegasus_get_msglevel(struct net_device *dev)
 964{
 965        pegasus_t *pegasus = netdev_priv(dev);
 966        return pegasus->msg_enable;
 967}
 968
 969static void pegasus_set_msglevel(struct net_device *dev, u32 v)
 970{
 971        pegasus_t *pegasus = netdev_priv(dev);
 972        pegasus->msg_enable = v;
 973}
 974
 975static const struct ethtool_ops ops = {
 976        .get_drvinfo = pegasus_get_drvinfo,
 977        .get_settings = pegasus_get_settings,
 978        .set_settings = pegasus_set_settings,
 979        .nway_reset = pegasus_nway_reset,
 980        .get_link = pegasus_get_link,
 981        .get_msglevel = pegasus_get_msglevel,
 982        .set_msglevel = pegasus_set_msglevel,
 983        .get_wol = pegasus_get_wol,
 984        .set_wol = pegasus_set_wol,
 985};
 986
 987static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
 988{
 989        __u16 *data = (__u16 *) &rq->ifr_ifru;
 990        pegasus_t *pegasus = netdev_priv(net);
 991        int res;
 992
 993        switch (cmd) {
 994        case SIOCDEVPRIVATE:
 995                data[0] = pegasus->phy;
 996        case SIOCDEVPRIVATE + 1:
 997                read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
 998                res = 0;
 999                break;
1000        case SIOCDEVPRIVATE + 2:
1001                if (!capable(CAP_NET_ADMIN))
1002                        return -EPERM;
1003                write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, &data[2]);
1004                res = 0;
1005                break;
1006        default:
1007                res = -EOPNOTSUPP;
1008        }
1009        return res;
1010}
1011
1012static void pegasus_set_multicast(struct net_device *net)
1013{
1014        pegasus_t *pegasus = netdev_priv(net);
1015
1016        if (net->flags & IFF_PROMISC) {
1017                pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1018                netif_info(pegasus, link, net, "Promiscuous mode enabled\n");
1019        } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1020                pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1021                pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1022                netif_dbg(pegasus, link, net, "set allmulti\n");
1023        } else {
1024                pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1025                pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1026        }
1027        update_eth_regs_async(pegasus);
1028}
1029
1030static __u8 mii_phy_probe(pegasus_t *pegasus)
1031{
1032        int i;
1033        __u16 tmp;
1034
1035        for (i = 0; i < 32; i++) {
1036                read_mii_word(pegasus, i, MII_BMSR, &tmp);
1037                if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1038                        continue;
1039                else
1040                        return i;
1041        }
1042
1043        return 0xff;
1044}
1045
1046static inline void setup_pegasus_II(pegasus_t *pegasus)
1047{
1048        __u8 data = 0xa5;
1049
1050        set_register(pegasus, Reg1d, 0);
1051        set_register(pegasus, Reg7b, 1);
1052        mdelay(100);
1053        if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1054                set_register(pegasus, Reg7b, 0);
1055        else
1056                set_register(pegasus, Reg7b, 2);
1057
1058        set_register(pegasus, 0x83, data);
1059        get_registers(pegasus, 0x83, 1, &data);
1060
1061        if (data == 0xa5)
1062                pegasus->chip = 0x8513;
1063        else
1064                pegasus->chip = 0;
1065
1066        set_register(pegasus, 0x80, 0xc0);
1067        set_register(pegasus, 0x83, 0xff);
1068        set_register(pegasus, 0x84, 0x01);
1069
1070        if (pegasus->features & HAS_HOME_PNA && mii_mode)
1071                set_register(pegasus, Reg81, 6);
1072        else
1073                set_register(pegasus, Reg81, 2);
1074}
1075
1076
1077static int pegasus_count;
1078static struct workqueue_struct *pegasus_workqueue;
1079#define CARRIER_CHECK_DELAY (2 * HZ)
1080
1081static void check_carrier(struct work_struct *work)
1082{
1083        pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1084        set_carrier(pegasus->net);
1085        if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1086                queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1087                        CARRIER_CHECK_DELAY);
1088        }
1089}
1090
1091static int pegasus_blacklisted(struct usb_device *udev)
1092{
1093        struct usb_device_descriptor *udd = &udev->descriptor;
1094
1095        /* Special quirk to keep the driver from handling the Belkin Bluetooth
1096         * dongle which happens to have the same ID.
1097         */
1098        if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) &&
1099            (udd->idProduct == cpu_to_le16(0x0121)) &&
1100            (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
1101            (udd->bDeviceProtocol == 1))
1102                return 1;
1103
1104        return 0;
1105}
1106
1107/* we rely on probe() and remove() being serialized so we
1108 * don't need extra locking on pegasus_count.
1109 */
1110static void pegasus_dec_workqueue(void)
1111{
1112        pegasus_count--;
1113        if (pegasus_count == 0) {
1114                destroy_workqueue(pegasus_workqueue);
1115                pegasus_workqueue = NULL;
1116        }
1117}
1118
1119static int pegasus_probe(struct usb_interface *intf,
1120                         const struct usb_device_id *id)
1121{
1122        struct usb_device *dev = interface_to_usbdev(intf);
1123        struct net_device *net;
1124        pegasus_t *pegasus;
1125        int dev_index = id - pegasus_ids;
1126        int res = -ENOMEM;
1127
1128        if (pegasus_blacklisted(dev))
1129                return -ENODEV;
1130
1131        if (pegasus_count == 0) {
1132                pegasus_workqueue = create_singlethread_workqueue("pegasus");
1133                if (!pegasus_workqueue)
1134                        return -ENOMEM;
1135        }
1136        pegasus_count++;
1137
1138        net = alloc_etherdev(sizeof(struct pegasus));
1139        if (!net)
1140                goto out;
1141
1142        pegasus = netdev_priv(net);
1143        pegasus->dev_index = dev_index;
1144
1145        res = alloc_urbs(pegasus);
1146        if (res < 0) {
1147                dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1148                goto out1;
1149        }
1150
1151        tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1152
1153        INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1154
1155        pegasus->intf = intf;
1156        pegasus->usb = dev;
1157        pegasus->net = net;
1158
1159
1160        net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1161        net->netdev_ops = &pegasus_netdev_ops;
1162        net->ethtool_ops = &ops;
1163        pegasus->mii.dev = net;
1164        pegasus->mii.mdio_read = mdio_read;
1165        pegasus->mii.mdio_write = mdio_write;
1166        pegasus->mii.phy_id_mask = 0x1f;
1167        pegasus->mii.reg_num_mask = 0x1f;
1168        pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
1169                                | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1170
1171        pegasus->features = usb_dev_id[dev_index].private;
1172        get_interrupt_interval(pegasus);
1173        if (reset_mac(pegasus)) {
1174                dev_err(&intf->dev, "can't reset MAC\n");
1175                res = -EIO;
1176                goto out2;
1177        }
1178        set_ethernet_addr(pegasus);
1179        if (pegasus->features & PEGASUS_II) {
1180                dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1181                setup_pegasus_II(pegasus);
1182        }
1183        pegasus->phy = mii_phy_probe(pegasus);
1184        if (pegasus->phy == 0xff) {
1185                dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1186                pegasus->phy = 1;
1187        }
1188        pegasus->mii.phy_id = pegasus->phy;
1189        usb_set_intfdata(intf, pegasus);
1190        SET_NETDEV_DEV(net, &intf->dev);
1191        pegasus_reset_wol(net);
1192        res = register_netdev(net);
1193        if (res)
1194                goto out3;
1195        queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1196                           CARRIER_CHECK_DELAY);
1197        dev_info(&intf->dev, "%s, %s, %pM\n", net->name,
1198                 usb_dev_id[dev_index].name, net->dev_addr);
1199        return 0;
1200
1201out3:
1202        usb_set_intfdata(intf, NULL);
1203out2:
1204        free_all_urbs(pegasus);
1205out1:
1206        free_netdev(net);
1207out:
1208        pegasus_dec_workqueue();
1209        return res;
1210}
1211
1212static void pegasus_disconnect(struct usb_interface *intf)
1213{
1214        struct pegasus *pegasus = usb_get_intfdata(intf);
1215
1216        usb_set_intfdata(intf, NULL);
1217        if (!pegasus) {
1218                dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1219                return;
1220        }
1221
1222        pegasus->flags |= PEGASUS_UNPLUG;
1223        cancel_delayed_work(&pegasus->carrier_check);
1224        unregister_netdev(pegasus->net);
1225        unlink_all_urbs(pegasus);
1226        free_all_urbs(pegasus);
1227        if (pegasus->rx_skb != NULL) {
1228                dev_kfree_skb(pegasus->rx_skb);
1229                pegasus->rx_skb = NULL;
1230        }
1231        free_netdev(pegasus->net);
1232        pegasus_dec_workqueue();
1233}
1234
1235static int pegasus_suspend(struct usb_interface *intf, pm_message_t message)
1236{
1237        struct pegasus *pegasus = usb_get_intfdata(intf);
1238
1239        netif_device_detach(pegasus->net);
1240        cancel_delayed_work(&pegasus->carrier_check);
1241        if (netif_running(pegasus->net)) {
1242                usb_kill_urb(pegasus->rx_urb);
1243                usb_kill_urb(pegasus->intr_urb);
1244        }
1245        return 0;
1246}
1247
1248static int pegasus_resume(struct usb_interface *intf)
1249{
1250        struct pegasus *pegasus = usb_get_intfdata(intf);
1251
1252        netif_device_attach(pegasus->net);
1253        if (netif_running(pegasus->net)) {
1254                pegasus->rx_urb->status = 0;
1255                pegasus->rx_urb->actual_length = 0;
1256                read_bulk_callback(pegasus->rx_urb);
1257
1258                pegasus->intr_urb->status = 0;
1259                pegasus->intr_urb->actual_length = 0;
1260                intr_callback(pegasus->intr_urb);
1261        }
1262        queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1263                                CARRIER_CHECK_DELAY);
1264        return 0;
1265}
1266
1267static const struct net_device_ops pegasus_netdev_ops = {
1268        .ndo_open =                     pegasus_open,
1269        .ndo_stop =                     pegasus_close,
1270        .ndo_do_ioctl =                 pegasus_ioctl,
1271        .ndo_start_xmit =               pegasus_start_xmit,
1272        .ndo_set_rx_mode =              pegasus_set_multicast,
1273        .ndo_get_stats =                pegasus_netdev_stats,
1274        .ndo_tx_timeout =               pegasus_tx_timeout,
1275        .ndo_change_mtu =               eth_change_mtu,
1276        .ndo_set_mac_address =          eth_mac_addr,
1277        .ndo_validate_addr =            eth_validate_addr,
1278};
1279
1280static struct usb_driver pegasus_driver = {
1281        .name = driver_name,
1282        .probe = pegasus_probe,
1283        .disconnect = pegasus_disconnect,
1284        .id_table = pegasus_ids,
1285        .suspend = pegasus_suspend,
1286        .resume = pegasus_resume,
1287        .disable_hub_initiated_lpm = 1,
1288};
1289
1290static void __init parse_id(char *id)
1291{
1292        unsigned int vendor_id = 0, device_id = 0, flags = 0, i = 0;
1293        char *token, *name = NULL;
1294
1295        if ((token = strsep(&id, ":")) != NULL)
1296                name = token;
1297        /* name now points to a null terminated string*/
1298        if ((token = strsep(&id, ":")) != NULL)
1299                vendor_id = simple_strtoul(token, NULL, 16);
1300        if ((token = strsep(&id, ":")) != NULL)
1301                device_id = simple_strtoul(token, NULL, 16);
1302        flags = simple_strtoul(id, NULL, 16);
1303        pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1304                driver_name, name, vendor_id, device_id, flags);
1305
1306        if (vendor_id > 0x10000 || vendor_id == 0)
1307                return;
1308        if (device_id > 0x10000 || device_id == 0)
1309                return;
1310
1311        for (i = 0; usb_dev_id[i].name; i++);
1312        usb_dev_id[i].name = name;
1313        usb_dev_id[i].vendor = vendor_id;
1314        usb_dev_id[i].device = device_id;
1315        usb_dev_id[i].private = flags;
1316        pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1317        pegasus_ids[i].idVendor = vendor_id;
1318        pegasus_ids[i].idProduct = device_id;
1319}
1320
1321static int __init pegasus_init(void)
1322{
1323        pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1324        if (devid)
1325                parse_id(devid);
1326        return usb_register(&pegasus_driver);
1327}
1328
1329static void __exit pegasus_exit(void)
1330{
1331        usb_deregister(&pegasus_driver);
1332}
1333
1334module_init(pegasus_init);
1335module_exit(pegasus_exit);
1336