drivers/usb/pegasus.c

   1 /*
   2  *  Copyright (c) 1999-2003 Petko Manolov (petkan@users.sourceforge.net)
   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  *
   9  *      ChangeLog:
  10  *              ....    Most of the time spend reading sources & docs.
  11  *              v0.2.x  First official release for the Linux kernel.
  12  *              v0.3.0  Beutified and structured, some bugs fixed.
  13  *              v0.3.x  URBifying bulk requests and bugfixing. First relatively
  14  *                      stable release. Still can touch device's registers only
  15  *                      from top-halves.
  16  *              v0.4.0  Control messages remained unurbified are now URBs.
  17  *                      Now we can touch the HW at any time.
  18  *              v0.4.9  Control urbs again use process context to wait. Argh...
  19  *                      Some long standing bugs (enable_net_traffic) fixed.
  20  *                      Also nasty trick about resubmiting control urb from
  21  *                      interrupt context used. Please let me know how it
  22  *                      behaves. Pegasus II support added since this version.
  23  *                      TODO: suppressing HCD warnings spewage on disconnect.
  24  *              v0.4.13 Ethernet address is now set at probe(), not at open()
  25  *                      time as this seems to break dhcpd.
  26  *              v0.4.25 ethtool support added.
  27  */
  28
  29 #include <linux/sched.h>
  30 #include <linux/slab.h>
  31 #include <linux/init.h>
  32 #include <linux/delay.h>
  33 #include <linux/netdevice.h>
  34 #include <linux/etherdevice.h>
  35 #include <linux/ethtool.h>
  36 #include <linux/mii.h>
  37 #include <linux/usb.h>
  38 #include <linux/module.h>
  39 #include <asm/uaccess.h>
  40 #include "pegasus.h"
  41
  42 /*
  43  * Version Information
  44  */
  45 #define DRIVER_VERSION "v0.4.32 (2003/06/06)"
  46 #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
  47 #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
  48
  49 static const char driver_name[] = "pegasus";
  50
  51 #define PEGASUS_USE_INTR
  52 #define PEGASUS_WRITE_EEPROM
  53 #define BMSR_MEDIA      (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
  54                         BMSR_100FULL | BMSR_ANEGCAPABLE)
  55
  56 static int loopback = 0;
  57 static int mii_mode = 0;
  58 static int multicast_filter_limit = 32;
  59
  60 static struct usb_eth_dev usb_dev_id[] = {
  61 #define PEGASUS_DEV(pn, vid, pid, flags)        \
  62         {name:pn, vendor:vid, device:pid, private:flags},
  63 #include "pegasus.h"
  64 #undef  PEGASUS_DEV
  65         {NULL, 0, 0, 0}
  66 };
  67
  68 static struct usb_device_id pegasus_ids[] = {
  69 #define PEGASUS_DEV(pn, vid, pid, flags) \
  70         {match_flags: USB_DEVICE_ID_MATCH_DEVICE, idVendor:vid, idProduct:pid},
  71 #include "pegasus.h"
  72 #undef  PEGASUS_DEV
  73         {}
  74 };
  75
  76 MODULE_AUTHOR(DRIVER_AUTHOR);
  77 MODULE_DESCRIPTION(DRIVER_DESC);
  78 MODULE_LICENSE("GPL");
  79 MODULE_PARM(loopback, "i");
  80 MODULE_PARM(mii_mode, "i");
  81 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
  82 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
  83
  84 MODULE_DEVICE_TABLE(usb, pegasus_ids);
  85
  86 static int update_eth_regs_async(pegasus_t *);
  87 /* Aargh!!! I _really_ hate such tweaks */
  88 static void ctrl_callback(struct urb *urb)
  89 {
  90         pegasus_t *pegasus = urb->context;
  91
  92         if (!pegasus)
  93                 return;
  94
  95         switch (urb->status) {
  96         case 0:
  97                 if (pegasus->flags & ETH_REGS_CHANGE) {
  98                         pegasus->flags &= ~ETH_REGS_CHANGE;
  99                         pegasus->flags |= ETH_REGS_CHANGED;
 100                         update_eth_regs_async(pegasus);
 101                         return;
 102                 }
 103                 break;
 104         case -EINPROGRESS:
 105                 return;
 106         case -ENOENT:
 107                 break;
 108         default:
 109                 warn("%s: status %d", __FUNCTION__, urb->status);
 110         }
 111         pegasus->flags &= ~ETH_REGS_CHANGED;
 112         wake_up(&pegasus->ctrl_wait);
 113 }
 114
 115 static int get_registers(pegasus_t * pegasus, u16 indx, u16 size,
 116                          void *data)
 117 {
 118         int ret;
 119         char *buffer;
 120         DECLARE_WAITQUEUE(wait, current);
 121
 122         buffer = kmalloc(size, GFP_DMA);
 123         if (!buffer) {
 124                 warn("%s: looks like we're out of memory", __FUNCTION__);
 125                 return -ENOMEM;
 126         }
 127         add_wait_queue(&pegasus->ctrl_wait, &wait);
 128         set_current_state(TASK_UNINTERRUPTIBLE);
 129         while (pegasus->flags & ETH_REGS_CHANGED)
 130                 schedule();
 131         remove_wait_queue(&pegasus->ctrl_wait, &wait);
 132         set_current_state(TASK_RUNNING);
 133
 134         pegasus->dr.bRequestType = PEGASUS_REQT_READ;
 135         pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
 136         pegasus->dr.wValue = cpu_to_le16(0);
 137         pegasus->dr.wIndex = cpu_to_le16p(&indx);
 138         pegasus->dr.wLength = cpu_to_le16p(&size);
 139         pegasus->ctrl_urb->transfer_buffer_length = size;
 140
 141         FILL_CONTROL_URB(pegasus->ctrl_urb, pegasus->usb,
 142                          usb_rcvctrlpipe(pegasus->usb, 0),
 143                          (char *) &pegasus->dr,
 144                          buffer, size, ctrl_callback, pegasus);
 145
 146         add_wait_queue(&pegasus->ctrl_wait, &wait);
 147         set_current_state(TASK_UNINTERRUPTIBLE);
 148
 149         if ((ret = usb_submit_urb(pegasus->ctrl_urb))) {
 150                 set_current_state(TASK_RUNNING);
 151                 err("%s: BAD CTRLs %d", __FUNCTION__, ret);
 152                 goto out;
 153         }
 154
 155         schedule();
 156 out:
 157         remove_wait_queue(&pegasus->ctrl_wait, &wait);
 158         memcpy(data, buffer, size);
 159         kfree(buffer);
 160
 161         return ret;
 162 }
 163
 164 static int set_registers(pegasus_t * pegasus, u16 indx, u16 size,
 165                          void *data)
 166 {
 167         int ret;
 168         char *buffer;
 169         DECLARE_WAITQUEUE(wait, current);
 170
 171         buffer = kmalloc(size, GFP_DMA);
 172         if (!buffer) {
 173                 warn("%s: looks like we're out of memory", __FUNCTION__);
 174                 return -ENOMEM;
 175         }
 176         memcpy(buffer, data, size);
 177
 178         add_wait_queue(&pegasus->ctrl_wait, &wait);
 179         set_current_state(TASK_UNINTERRUPTIBLE);
 180         while (pegasus->flags & ETH_REGS_CHANGED)
 181                 schedule();
 182         remove_wait_queue(&pegasus->ctrl_wait, &wait);
 183         set_current_state(TASK_RUNNING);
 184
 185         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
 186         pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
 187         pegasus->dr.wValue = cpu_to_le16(0);
 188         pegasus->dr.wIndex = cpu_to_le16p(&indx);
 189         pegasus->dr.wLength = cpu_to_le16p(&size);
 190         pegasus->ctrl_urb->transfer_buffer_length = size;
 191
 192         FILL_CONTROL_URB(pegasus->ctrl_urb, pegasus->usb,
 193                          usb_sndctrlpipe(pegasus->usb, 0),
 194                          (char *) &pegasus->dr,
 195                          buffer, size, ctrl_callback, pegasus);
 196
 197         add_wait_queue(&pegasus->ctrl_wait, &wait);
 198         set_current_state(TASK_UNINTERRUPTIBLE);
 199
 200         if ((ret = usb_submit_urb(pegasus->ctrl_urb))) {
 201                 set_current_state(TASK_RUNNING);
 202                 err("%s: BAD CTRL %d", __FUNCTION__, ret);
 203                 goto out;
 204         }
 205
 206         schedule();
 207 out:
 208         remove_wait_queue(&pegasus->ctrl_wait, &wait);
 209         kfree(buffer);
 210
 211         return ret;
 212 }
 213
 214 static int set_register(pegasus_t * pegasus, u16 indx, u8 data)
 215 {
 216         int ret;
 217         char *tmp;
 218         DECLARE_WAITQUEUE(wait, current);
 219
 220         tmp = kmalloc(1, GFP_DMA);
 221         if (!tmp) {
 222                 warn("%s: looks like we're out of memory", __FUNCTION__);
 223                 return -ENOMEM;
 224         }
 225         memcpy(tmp, &data, 1);
 226         add_wait_queue(&pegasus->ctrl_wait, &wait);
 227         set_current_state(TASK_UNINTERRUPTIBLE);
 228         while (pegasus->flags & ETH_REGS_CHANGED)
 229                 schedule();
 230         remove_wait_queue(&pegasus->ctrl_wait, &wait);
 231         set_current_state(TASK_RUNNING);
 232
 233         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
 234         pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
 235         pegasus->dr.wValue = cpu_to_le16(data);
 236         pegasus->dr.wIndex = cpu_to_le16p(&indx);
 237         pegasus->dr.wLength = cpu_to_le16(1);
 238         pegasus->ctrl_urb->transfer_buffer_length = 1;
 239
 240         FILL_CONTROL_URB(pegasus->ctrl_urb, pegasus->usb,
 241                          usb_sndctrlpipe(pegasus->usb, 0),
 242                          (char *) &pegasus->dr,
 243                          tmp, 1, ctrl_callback, pegasus);
 244
 245         add_wait_queue(&pegasus->ctrl_wait, &wait);
 246         set_current_state(TASK_UNINTERRUPTIBLE);
 247
 248         if ((ret = usb_submit_urb(pegasus->ctrl_urb))) {
 249                 set_current_state(TASK_RUNNING);
 250                 err("%s: BAD CTRL %d", __FUNCTION__, ret);
 251                 goto out;
 252         }
 253
 254         schedule();
 255 out:
 256         remove_wait_queue(&pegasus->ctrl_wait, &wait);
 257         kfree(tmp);
 258
 259         return ret;
 260 }
 261
 262 static int update_eth_regs_async(pegasus_t * pegasus)
 263 {
 264         int ret;
 265
 266         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
 267         pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
 268         pegasus->dr.wValue = 0;
 269         pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
 270         pegasus->dr.wLength = cpu_to_le16(3);
 271         pegasus->ctrl_urb->transfer_buffer_length = 3;
 272
 273         FILL_CONTROL_URB(pegasus->ctrl_urb, pegasus->usb,
 274                          usb_sndctrlpipe(pegasus->usb, 0),
 275                          (char *) &pegasus->dr,
 276                          pegasus->eth_regs, 3, ctrl_callback, pegasus);
 277
 278         if ((ret = usb_submit_urb(pegasus->ctrl_urb)))
 279                 err("%s: BAD CTRL %d, flgs %x", __FUNCTION__, ret,
 280                     pegasus->flags);
 281
 282         return ret;
 283 }
 284
 285 static int read_mii_word(pegasus_t * pegasus, u8 phy, u8 indx, u16 * regd)
 286 {
 287         int i;
 288         u8 data[4] = { phy, 0, 0, indx };
 289         u16 regdi;
 290
 291         set_register(pegasus, PhyCtrl, 0);
 292         set_registers(pegasus, PhyAddr, sizeof(data), data);
 293         set_register(pegasus, PhyCtrl, (indx | PHY_READ));
 294         for (i = 0; i < REG_TIMEOUT; i++) {
 295                 get_registers(pegasus, PhyCtrl, 1, data);
 296                 if (data[0] & PHY_DONE)
 297                         break;
 298         }
 299         if (i < REG_TIMEOUT) {
 300                 get_registers(pegasus, PhyData, 2, &regdi);
 301                 *regd = le16_to_cpu(regdi);
 302                 return 0;
 303         }
 304         warn("%s: failed", __FUNCTION__);
 305
 306         return 1;
 307 }
 308
 309 static int mdio_read(struct net_device *dev, int phy_id, int loc)
 310 {
 311         pegasus_t *pegasus = (pegasus_t *) dev->priv;
 312         int res;
 313
 314         read_mii_word(pegasus, phy_id, loc, (u16 *) & res);
 315         return res & 0xffff;
 316 }
 317
 318 static int write_mii_word(pegasus_t * pegasus, u8 phy, u8 indx, u16 regd)
 319 {
 320         int i;
 321         u8 data[4] = { phy, 0, 0, indx };
 322
 323         *(data + 1) = cpu_to_le16p(&regd);
 324         set_register(pegasus, PhyCtrl, 0);
 325         set_registers(pegasus, PhyAddr, 4, data);
 326         set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
 327         for (i = 0; i < REG_TIMEOUT; i++) {
 328                 get_registers(pegasus, PhyCtrl, 1, data);
 329                 if (data[0] & PHY_DONE)
 330                         break;
 331         }
 332         if (i < REG_TIMEOUT)
 333                 return 0;
 334         warn("%s: failed", __FUNCTION__);
 335
 336         return 1;
 337 }
 338
 339 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
 340 {
 341         pegasus_t *pegasus = (pegasus_t *) dev->priv;
 342
 343         write_mii_word(pegasus, phy_id, loc, val);
 344 }
 345
 346 static int read_eprom_word(pegasus_t * pegasus, u8 index, u16 * retdata)
 347 {
 348         int i;
 349         u8 tmp;
 350         u16 retdatai;
 351
 352         set_register(pegasus, EpromCtrl, 0);
 353         set_register(pegasus, EpromOffset, index);
 354         set_register(pegasus, EpromCtrl, EPROM_READ);
 355
 356         for (i = 0; i < REG_TIMEOUT; i++) {
 357                 get_registers(pegasus, EpromCtrl, 1, &tmp);
 358                 if (tmp & EPROM_DONE)
 359                         break;
 360         }
 361         if (i < REG_TIMEOUT) {
 362                 get_registers(pegasus, EpromData, 2, &retdatai);
 363                 *retdata = le16_to_cpu(retdatai);
 364                 return 0;
 365         }
 366         warn("%s: failed", __FUNCTION__);
 367
 368         return -1;
 369 }
 370
 371 #ifdef  PEGASUS_WRITE_EEPROM
 372 static inline void enable_eprom_write(pegasus_t * pegasus)
 373 {
 374         u8 tmp;
 375
 376         get_registers(pegasus, EthCtrl2, 1, &tmp);
 377         set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
 378 }
 379
 380 static inline void disable_eprom_write(pegasus_t * pegasus)
 381 {
 382         u8 tmp;
 383
 384         get_registers(pegasus, EthCtrl2, 1, &tmp);
 385         set_register(pegasus, EpromCtrl, 0);
 386         set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
 387 }
 388
 389 static int write_eprom_word(pegasus_t * pegasus, u8 index, u16 data)
 390 {
 391         int i, tmp;
 392         u8 d[4] = { 0x3f, 0, 0, EPROM_WRITE };
 393
 394         set_registers(pegasus, EpromOffset, 4, d);
 395         enable_eprom_write(pegasus);
 396         set_register(pegasus, EpromOffset, index);
 397         set_registers(pegasus, EpromData, 2, &data);
 398         set_register(pegasus, EpromCtrl, EPROM_WRITE);
 399
 400         for (i = 0; i < REG_TIMEOUT; i++) {
 401                 get_registers(pegasus, EpromCtrl, 1, &tmp);
 402                 if (tmp & EPROM_DONE)
 403                         break;
 404         }
 405         disable_eprom_write(pegasus);
 406         if (i < REG_TIMEOUT)
 407                 return 0;
 408         warn("%s: failed", __FUNCTION__);
 409         return -1;
 410 }
 411 #endif                          /* PEGASUS_WRITE_EEPROM */
 412
 413 static inline void get_node_id(pegasus_t * pegasus, u8 * id)
 414 {
 415         int i;
 416         u16 w16;
 417
 418         for (i = 0; i < 3; i++) {
 419                 read_eprom_word(pegasus, i, &w16);
 420                 ((u16 *) id)[i] = cpu_to_le16p(&w16);
 421         }
 422 }
 423
 424 static void set_ethernet_addr(pegasus_t * pegasus)
 425 {
 426         u8 node_id[6];
 427
 428         get_node_id(pegasus, node_id);
 429         set_registers(pegasus, EthID, sizeof(node_id), node_id);
 430         memcpy(pegasus->net->dev_addr, node_id, sizeof(node_id));
 431 }
 432
 433 static inline int reset_mac(pegasus_t * pegasus)
 434 {
 435         u8 data = 0x8;
 436         int i;
 437
 438         set_register(pegasus, EthCtrl1, data);
 439         for (i = 0; i < REG_TIMEOUT; i++) {
 440                 get_registers(pegasus, EthCtrl1, 1, &data);
 441                 if (~data & 0x08) {
 442                         if (loopback & 1)
 443                                 break;
 444                         if (mii_mode && (pegasus->features & HAS_HOME_PNA))
 445                                 set_register(pegasus, Gpio1, 0x34);
 446                         else
 447                                 set_register(pegasus, Gpio1, 0x26);
 448                         set_register(pegasus, Gpio0, pegasus->features);
 449                         set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
 450                         break;
 451                 }
 452         }
 453         if (i == REG_TIMEOUT)
 454                 return 1;
 455
 456         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
 457             usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
 458                 u16 auxmode;
 459
 460                 read_mii_word(pegasus, 1, 0x1b, &auxmode);
 461                 write_mii_word(pegasus, 1, 0x1b, auxmode | 4);
 462         }
 463         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
 464                 u16 auxmode;
 465                 read_mii_word(pegasus, 3, 0x1b, &auxmode);
 466                 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
 467         }
 468         return 0;
 469 }
 470
 471 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
 472 {
 473         u16 linkpart, bmsr;
 474         u8 data[4];
 475         pegasus_t *pegasus = dev->priv;
 476
 477         /* read twice 'cos this is a latch bit */
 478         read_mii_word(pegasus, pegasus->phy, MII_BMSR, &bmsr);
 479         read_mii_word(pegasus, pegasus->phy, MII_BMSR, &bmsr);
 480         if (read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart))
 481                 return 2;
 482         if (!(linkpart & 1))
 483                 warn("link partner stat %x", linkpart);
 484
 485         data[0] = 0xc9;
 486         data[1] = 0;
 487         if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
 488                 data[1] |= 0x20;        /* set full duplex */
 489         if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
 490                 data[1] |= 0x10;        /* set 100 Mbps */
 491         if (mii_mode)
 492                 data[1] |= 1;
 493         data[2] = (loopback & 1) ? 0x09 : 0x01;
 494         memcpy(pegasus->eth_regs, data, sizeof(data));
 495         set_registers(pegasus, EthCtrl0, 3, data);
 496
 497         return 0;
 498 }
 499
 500 static void read_bulk_callback(struct urb *urb)
 501 {
 502         pegasus_t *pegasus = urb->context;
 503         struct net_device *net;
 504         int count = urb->actual_length, res;
 505         int rx_status;
 506         struct sk_buff *skb;
 507         u16 pkt_len;
 508
 509         if (!pegasus || !(pegasus->flags & PEGASUS_RUNNING))
 510                 return;
 511
 512         net = pegasus->net;
 513         if (!netif_device_present(net))
 514                 return;
 515
 516         if (pegasus->flags & PEGASUS_RX_BUSY) {
 517                 pegasus->stats.rx_errors++;
 518                 dbg("pegasus Rx busy");
 519                 return;
 520         }
 521         pegasus->flags |= PEGASUS_RX_BUSY;
 522
 523         switch (urb->status) {
 524         case 0:
 525                 break;
 526         case -ETIMEDOUT:
 527                 dbg("reset MAC");
 528                 pegasus->flags &= ~PEGASUS_RX_BUSY;
 529                 break;
 530         default:
 531                 dbg("%s: RX status %d", net->name, urb->status);
 532                 goto goon;
 533         }
 534
 535         if (!count)
 536                 goto goon;
 537
 538         rx_status = le32_to_cpu(*(int *) (pegasus->rx_buff + count - 4));
 539         if (rx_status & 0x000e0000) {
 540                 dbg("%s: RX packet error %x", net->name, rx_status & 0xe0000);
 541                 pegasus->stats.rx_errors++;
 542                 if (rx_status & 0x060000)
 543                         pegasus->stats.rx_length_errors++;
 544                 if (rx_status & 0x080000)
 545                         pegasus->stats.rx_crc_errors++;
 546                 if (rx_status & 0x100000)
 547                         pegasus->stats.rx_frame_errors++;
 548                 goto goon;
 549         }
 550
 551         if (pegasus->chip == 0x8513) {
 552                 pkt_len = le32_to_cpu(*(int *)pegasus->rx_buff);
 553                 pkt_len &= 0x0fff;
 554         } else {
 555                 pkt_len = (rx_status & 0x0fff) - 8;
 556         }
 557
 558         if (!(skb = dev_alloc_skb(pkt_len + 2)))
 559                 goto goon;
 560
 561         skb->dev = net;
 562         skb_reserve(skb, 2);
 563         eth_copy_and_sum(skb, pegasus->rx_buff, pkt_len, 0);
 564         skb_put(skb, pkt_len);
 565
 566         if (pegasus->chip == 0x8513) {
 567                 skb->data += 2;
 568         }
 569
 570         skb->protocol = eth_type_trans(skb, net);
 571         netif_rx(skb);
 572         pegasus->stats.rx_packets++;
 573         pegasus->stats.rx_bytes += pkt_len;
 574
 575 goon:
 576         FILL_BULK_URB(pegasus->rx_urb, pegasus->usb,
 577                       usb_rcvbulkpipe(pegasus->usb, 1),
 578                       pegasus->rx_buff, PEGASUS_MAX_MTU,
 579                       read_bulk_callback, pegasus);
 580         if ((res = usb_submit_urb(pegasus->rx_urb)))
 581                 warn("%s: failed submint rx_urb %d", __FUNCTION__, res);
 582         pegasus->flags &= ~PEGASUS_RX_BUSY;
 583 }
 584
 585 static void write_bulk_callback(struct urb *urb)
 586 {
 587         pegasus_t *pegasus = urb->context;
 588         struct net_device *net = pegasus->net;
 589
 590         if (!pegasus || !(pegasus->flags & PEGASUS_RUNNING))
 591                 return;
 592
 593         if (!netif_device_present(net))
 594                 return;
 595
 596         switch (urb->status) {
 597         case -EPIPE:
 598                 /* FIXME schedule_work() to clear the tx halt */
 599                 netif_stop_queue(net);
 600                 warn("%s: no tx stall recovery", net->name);
 601                 return;
 602         case -ENOENT:
 603         case -ECONNRESET:
 604         case -ESHUTDOWN:
 605                 dbg("%s: tx unlink, %d", net->name, urb->status);
 606                 return;
 607         default:
 608                 info("%s: TX status %d", net->name, urb->status);
 609                 /* FALL THROUGH */
 610         case 0:
 611                 break;
 612         }
 613
 614         net->trans_start = jiffies;
 615         netif_wake_queue(net);
 616 }
 617
 618 #ifdef  PEGASUS_USE_INTR
 619 static void intr_callback(struct urb *urb)
 620 {
 621         pegasus_t *pegasus = urb->context;
 622         struct net_device *net;
 623         u8 *d;
 624
 625         if (!pegasus)
 626                 return;
 627
 628         switch (urb->status) {
 629         case 0:
 630                 break;
 631         case -ENOENT:
 632                 return;
 633         default:
 634                 info("intr status %d", urb->status);
 635         }
 636
 637         d = urb->transfer_buffer;
 638         net = pegasus->net;
 639         if (d[0] & 0xfc) {
 640                 pegasus->stats.tx_errors++;
 641                 if (d[0] & TX_UNDERRUN)
 642                         pegasus->stats.tx_fifo_errors++;
 643                 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
 644                         pegasus->stats.tx_aborted_errors++;
 645                 if (d[0] & LATE_COL)
 646                         pegasus->stats.tx_window_errors++;
 647                 if (d[5] & LINK_STATUS) {
 648                         netif_carrier_on(net);
 649                 } else {
 650                         netif_carrier_off(net);
 651                         pegasus->stats.tx_carrier_errors++;
 652                 }
 653         }
 654 }
 655 #endif
 656
 657 static void pegasus_tx_timeout(struct net_device *net)
 658 {
 659         pegasus_t *pegasus = net->priv;
 660
 661         if (!pegasus)
 662                 return;
 663
 664         warn("%s: Tx timed out.", net->name);
 665         pegasus->tx_urb->transfer_flags |= USB_ASYNC_UNLINK;
 666         usb_unlink_urb(pegasus->tx_urb);
 667         pegasus->stats.tx_errors++;
 668 }
 669
 670 static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
 671 {
 672         pegasus_t *pegasus = net->priv;
 673         int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
 674         int res;
 675         u16 l16 = skb->len;
 676
 677         netif_stop_queue(net);
 678
 679         ((u16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
 680         memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
 681         FILL_BULK_URB(pegasus->tx_urb, pegasus->usb,
 682                       usb_sndbulkpipe(pegasus->usb, 2),
 683                       pegasus->tx_buff, PEGASUS_MAX_MTU,
 684                       write_bulk_callback, pegasus);
 685         pegasus->tx_urb->transfer_buffer_length = count;
 686         if ((res = usb_submit_urb(pegasus->tx_urb))) {
 687                 switch (res) {
 688                 case -EPIPE:    /* stall, or disconnect from TT */
 689                         /* cleanup should already have been scheduled */
 690                         break;
 691                 case -ENODEV:   /* disconnect() upcoming */
 692                         break;
 693                 default:
 694                         pegasus->stats.tx_errors++;
 695                         netif_start_queue(net);
 696                 }
 697         } else {
 698                 pegasus->stats.tx_packets++;
 699                 pegasus->stats.tx_bytes += skb->len;
 700                 net->trans_start = jiffies;
 701         }
 702
 703         dev_kfree_skb(skb);
 704
 705         return 0;
 706 }
 707
 708 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
 709 {
 710         return &((pegasus_t *) dev->priv)->stats;
 711 }
 712
 713 static inline void disable_net_traffic(pegasus_t * pegasus)
 714 {
 715         int tmp = 0;
 716
 717         set_registers(pegasus, EthCtrl0, 2, &tmp);
 718 }
 719
 720 static inline void get_interrupt_interval(pegasus_t * pegasus)
 721 {
 722         u8 data[2];
 723
 724         read_eprom_word(pegasus, 4, (u16 *) data);
 725         if (data[1] < 0x80) {
 726                 info("intr interval will be changed from %ums to %ums",
 727                      data[1], 0x80);
 728                 data[1] = 0x80;
 729 #ifdef  PEGASUS_WRITE_EEPROM
 730                 write_eprom_word(pegasus, 4, *(u16 *) data);
 731 #endif
 732         }
 733         pegasus->intr_interval = data[1];
 734 }
 735
 736 static void set_carrier(struct net_device *net)
 737 {
 738         pegasus_t *pegasus;
 739         short tmp;
 740
 741         pegasus = net->priv;
 742         read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp);
 743         if (tmp & BMSR_LSTATUS)
 744                 netif_carrier_on(net);
 745         else
 746                 netif_carrier_off(net);
 747
 748 }
 749
 750 static int pegasus_open(struct net_device *net)
 751 {
 752         pegasus_t *pegasus = (pegasus_t *) net->priv;
 753         int res;
 754
 755         down(&pegasus->sem);
 756
 757         set_registers(pegasus, EthID, 6, net->dev_addr);
 758
 759         FILL_BULK_URB(pegasus->rx_urb, pegasus->usb,
 760                       usb_rcvbulkpipe(pegasus->usb, 1),
 761                       pegasus->rx_buff, PEGASUS_MAX_MTU,
 762                       read_bulk_callback, pegasus);
 763         if ((res = usb_submit_urb(pegasus->rx_urb)))
 764                 warn("%s: failed rx_urb %d", __FUNCTION__, res);
 765 #ifdef  PEGASUS_USE_INTR
 766         FILL_INT_URB(pegasus->intr_urb, pegasus->usb,
 767                      usb_rcvintpipe(pegasus->usb, 3),
 768                      pegasus->intr_buff, sizeof(pegasus->intr_buff),
 769                      intr_callback, pegasus, pegasus->intr_interval);
 770         if ((res = usb_submit_urb(pegasus->intr_urb)))
 771                 warn("%s: failed intr_urb %d", __FUNCTION__, res);
 772 #endif
 773         netif_start_queue(net);
 774         pegasus->flags |= PEGASUS_RUNNING;
 775         if ((res = enable_net_traffic(net, pegasus->usb))) {
 776                 err("can't enable_net_traffic() - %d", res);
 777                 res = -EIO;
 778                 goto exit;
 779         }
 780
 781         set_carrier(net);
 782         res = 0;
 783 exit:
 784         up(&pegasus->sem);
 785
 786         return res;
 787 }
 788
 789 static int pegasus_close(struct net_device *net)
 790 {
 791         pegasus_t *pegasus = net->priv;
 792
 793         down(&pegasus->sem);
 794         pegasus->flags &= ~PEGASUS_RUNNING;
 795         netif_stop_queue(net);
 796         if (!(pegasus->flags & PEGASUS_UNPLUG))
 797                 disable_net_traffic(pegasus);
 798
 799         usb_unlink_urb(pegasus->rx_urb);
 800         usb_unlink_urb(pegasus->tx_urb);
 801         usb_unlink_urb(pegasus->ctrl_urb);
 802 #ifdef  PEGASUS_USE_INTR
 803         usb_unlink_urb(pegasus->intr_urb);
 804 #endif
 805         up(&pegasus->sem);
 806
 807         return 0;
 808 }
 809 #if CONFIG_MII
 810 static int pegasus_ethtool_ioctl(struct net_device *dev, void *useraddr)
 811 {
 812
 813         u32 ethcmd;
 814         pegasus_t *pegasus = dev->priv;
 815
 816         if (copy_from_user(&ethcmd, useraddr, sizeof (ethcmd)))
 817                 return -EFAULT;
 818
 819         switch (ethcmd) {
 820         /* get driver-specific version/etc. info */
 821         case ETHTOOL_GDRVINFO:{
 822                         struct ethtool_drvinfo info;
 823
 824                         memset (&info, 0, sizeof info);
 825                         info.cmd = ETHTOOL_GDRVINFO;
 826                         strncpy(info.driver, driver_name,
 827                                 sizeof (info.driver) - 1);
 828                         strncpy(info.version, DRIVER_VERSION,
 829                                 sizeof (info.version) - 1);
 830                         usb_make_path(pegasus->usb, info.bus_info,
 831                                       sizeof info.bus_info);
 832                         if (copy_to_user(useraddr, &info, sizeof (info)))
 833                                 return -EFAULT;
 834                         return 0;
 835                 }
 836
 837         /* get settings */
 838         case ETHTOOL_GSET:{
 839                         struct ethtool_cmd ecmd = { ETHTOOL_GSET };
 840                         mii_ethtool_gset(&pegasus->mii, &ecmd);
 841                         if (copy_to_user(useraddr, &ecmd, sizeof (ecmd)))
 842                                 return -EFAULT;
 843                         return 0;
 844                 }
 845         /* set settings */
 846         case ETHTOOL_SSET:{
 847                         int r;
 848                         struct ethtool_cmd ecmd;
 849                         if (copy_from_user(&ecmd, useraddr, sizeof (ecmd)))
 850                                 return -EFAULT;
 851                         r = mii_ethtool_sset(&pegasus->mii, &ecmd);
 852                         return r;
 853                 }
 854         /* restart autonegotiation */
 855         case ETHTOOL_NWAY_RST:{
 856                         return mii_nway_restart(&pegasus->mii);
 857                 }
 858
 859         /* get link status */
 860         case ETHTOOL_GLINK:{
 861                         struct ethtool_value edata = { ETHTOOL_GLINK };
 862                         edata.data = mii_link_ok(&pegasus->mii);
 863                         if (copy_to_user(useraddr, &edata, sizeof (edata)))
 864                                 return -EFAULT;
 865                         return 0;
 866                 }
 867         /* get message-level */
 868         case ETHTOOL_GMSGLVL:{
 869                         struct ethtool_value edata = { ETHTOOL_GMSGLVL };
 870                         /* edata.data = pegasus->msg_enable; FIXME */
 871                         if (copy_to_user(useraddr, &edata, sizeof (edata)))
 872                                 return -EFAULT;
 873                         return 0;
 874                 }
 875         /* set message-level */
 876         case ETHTOOL_SMSGLVL:{
 877                         struct ethtool_value edata;
 878                         if (copy_from_user(&edata, useraddr, sizeof (edata)))
 879                                 return -EFAULT;
 880                         /* sp->msg_enable = edata.data; FIXME */
 881                         return 0;
 882                 }
 883
 884         }
 885
 886         return -EOPNOTSUPP;
 887
 888 }
 889 #else
 890 static int pegasus_ethtool_ioctl(struct net_device *net, void *uaddr)
 891 {
 892         pegasus_t *pegasus;
 893         int cmd;
 894
 895         pegasus = net->priv;
 896         if (get_user(cmd, (int *) uaddr))
 897                 return -EFAULT;
 898         switch (cmd) {
 899         case ETHTOOL_GDRVINFO:{
 900                         struct ethtool_drvinfo info;
 901
 902                         memset (&info, 0, sizeof info);
 903                         info.cmd = ETHTOOL_GDRVINFO;
 904                         strncpy(info.driver, driver_name,
 905                                 sizeof (info.driver) - 1);
 906                         strncpy(info.driver, DRIVER_DESC, ETHTOOL_BUSINFO_LEN);
 907                         strncpy(info.version, DRIVER_VERSION,
 908                                 sizeof (info.version) - 1);
 909                         usb_make_path(pegasus->usb, info.bus_info,
 910                                       sizeof (info.bus_info) -1);
 911                         if (copy_to_user(uaddr, &info, sizeof(info)))
 912                                 return -EFAULT;
 913                         return 0;
 914                 }
 915         case ETHTOOL_GSET:{
 916                         struct ethtool_cmd ecmd;
 917                         short lpa, bmcr;
 918                         u8 port;
 919
 920                         if (copy_from_user(&ecmd, uaddr, sizeof(ecmd)))
 921                                 return -EFAULT;
 922                         ecmd.supported = (SUPPORTED_10baseT_Half |
 923                                           SUPPORTED_10baseT_Full |
 924                                           SUPPORTED_100baseT_Half |
 925                                           SUPPORTED_100baseT_Full |
 926                                           SUPPORTED_Autoneg |
 927                                           SUPPORTED_TP | SUPPORTED_MII);
 928                         get_registers(pegasus, Reg7b, 1, &port);
 929                         if (port == 0)
 930                                 ecmd.port = PORT_MII;
 931                         else
 932                                 ecmd.port = PORT_TP;
 933                         ecmd.transceiver = XCVR_INTERNAL;
 934                         ecmd.phy_address = pegasus->phy;
 935                         read_mii_word(pegasus, pegasus->phy, MII_BMCR, &bmcr);
 936                         read_mii_word(pegasus, pegasus->phy, MII_LPA, &lpa);
 937                         if (bmcr & BMCR_ANENABLE) {
 938                                 ecmd.autoneg = AUTONEG_ENABLE;
 939                                 ecmd.speed = lpa & (LPA_100HALF | LPA_100FULL) ?
 940                                     SPEED_100 : SPEED_10;
 941                                 if (ecmd.speed == SPEED_100)
 942                                         ecmd.duplex = lpa & LPA_100FULL ?
 943                                             DUPLEX_FULL : DUPLEX_HALF;
 944                                 else
 945                                         ecmd.duplex = lpa & LPA_10FULL ?
 946                                             DUPLEX_FULL : DUPLEX_HALF;
 947                         } else {
 948                                 ecmd.autoneg = AUTONEG_DISABLE;
 949                                 ecmd.speed = bmcr & BMCR_SPEED100 ?
 950                                     SPEED_100 : SPEED_10;
 951                                 ecmd.duplex = bmcr & BMCR_FULLDPLX ?
 952                                     DUPLEX_FULL : DUPLEX_HALF;
 953                         }
 954                         if (copy_to_user(uaddr, &ecmd, sizeof(ecmd)))
 955                                 return -EFAULT;
 956
 957                         return 0;
 958                 }
 959         case ETHTOOL_SSET:{
 960                         return -EOPNOTSUPP;
 961                 }
 962         case ETHTOOL_GLINK:{
 963                         struct ethtool_value edata = { ETHTOOL_GLINK };
 964                         edata.data = netif_carrier_ok(net);
 965                         if (copy_to_user(uaddr, &edata, sizeof(edata)))
 966                                 return -EFAULT;
 967                         return 0;
 968                 }
 969         default:
 970                 return -EOPNOTSUPP;
 971         }
 972 }
 973 #endif
 974 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
 975 {
 976         u16 *data = (u16 *) & rq->ifr_data;
 977         pegasus_t *pegasus = net->priv;
 978         int res;
 979
 980         down(&pegasus->sem);
 981         switch (cmd) {
 982         case SIOCETHTOOL:
 983                 res = pegasus_ethtool_ioctl(net, rq->ifr_data);
 984                 break;
 985         case SIOCDEVPRIVATE:
 986                 data[0] = pegasus->phy;
 987         case SIOCDEVPRIVATE + 1:
 988                 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
 989                 res = 0;
 990                 break;
 991         case SIOCDEVPRIVATE + 2:
 992                 if (!capable(CAP_NET_ADMIN)) {
 993                         up(&pegasus->sem);
 994                         return -EPERM;
 995                 }
 996                 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
 997                 res = 0;
 998                 break;
 999         default:
1000                 res = -EOPNOTSUPP;
1001         }
1002         up(&pegasus->sem);
1003
1004         return res;
1005 }
1006
1007 static void pegasus_set_multicast(struct net_device *net)
1008 {
1009         pegasus_t *pegasus = net->priv;
1010
1011         netif_stop_queue(net);
1012
1013         if (net->flags & IFF_PROMISC) {
1014                 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1015                 info("%s: Promiscuous mode enabled", net->name);
1016         } else if ((net->mc_count > multicast_filter_limit) ||
1017                    (net->flags & IFF_ALLMULTI)) {
1018                 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1019                 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1020                 info("%s set allmulti", net->name);
1021         } else {
1022                 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1023                 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1024         }
1025
1026         pegasus->flags |= ETH_REGS_CHANGE;
1027         ctrl_callback(pegasus->ctrl_urb);
1028
1029         netif_wake_queue(net);
1030 }
1031
1032 static u8 mii_phy_probe(pegasus_t * pegasus)
1033 {
1034         int i;
1035         u16 tmp;
1036
1037         for (i = 0; i < 32; i++) {
1038                 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1039                 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1040                         continue;
1041                 else
1042                         return i;
1043         }
1044
1045         return 0xff;
1046 }
1047
1048 static inline void setup_pegasus_II(pegasus_t * pegasus)
1049 {
1050         u16 data = 0xa5;
1051
1052         set_register(pegasus, Reg1d, 0);
1053         set_register(pegasus, Reg7b, 1);
1054         mdelay(100);
1055         if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1056                 set_register(pegasus, Reg7b, 0);
1057         else
1058                 set_register(pegasus, Reg7b, 2);
1059
1060         set_register(pegasus, 0x83, data);
1061         get_registers(pegasus, 0x83, 1, &data);
1062
1063         if (data & 0xa5) {
1064                 pegasus->chip = 0x8513;
1065         } else {
1066                 pegasus->chip = 0;
1067         }
1068
1069         set_register( pegasus, 0x80, 0xc0 );
1070         set_register( pegasus, 0x83, 0xff );
1071         set_register( pegasus, 0x84, 0x01 );
1072
1073         if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1074                 set_register(pegasus, Reg81, 6);
1075         else
1076                 set_register(pegasus, Reg81, 2);
1077 }
1078
1079 static void *pegasus_probe(struct usb_device *dev, unsigned int ifnum,
1080                            const struct usb_device_id *id)
1081 {
1082         struct net_device *net;
1083         pegasus_t *pegasus;
1084         int dev_index = id - pegasus_ids;
1085
1086         if (usb_set_configuration(dev, dev->config[0].bConfigurationValue)) {
1087                 err("usb_set_configuration() failed");
1088                 return NULL;
1089         }
1090
1091         if (!(pegasus = kmalloc(sizeof(struct pegasus), GFP_KERNEL))) {
1092                 err("out of memory allocating device structure");
1093                 return NULL;
1094         }
1095
1096         usb_inc_dev_use(dev);
1097         memset(pegasus, 0, sizeof(struct pegasus));
1098         pegasus->dev_index = dev_index;
1099         init_waitqueue_head(&pegasus->ctrl_wait);
1100
1101         pegasus->ctrl_urb = usb_alloc_urb(0);
1102         if (!pegasus->ctrl_urb) {
1103                 kfree(pegasus);
1104                 return NULL;
1105         }
1106         pegasus->rx_urb = usb_alloc_urb(0);
1107         if (!pegasus->rx_urb) {
1108                 usb_free_urb(pegasus->ctrl_urb);
1109                 kfree(pegasus);
1110                 return NULL;
1111         }
1112         pegasus->tx_urb = usb_alloc_urb(0);
1113         if (!pegasus->tx_urb) {
1114                 usb_free_urb(pegasus->rx_urb);
1115                 usb_free_urb(pegasus->ctrl_urb);
1116                 kfree(pegasus);
1117                 return NULL;
1118         }
1119         pegasus->intr_urb = usb_alloc_urb(0);
1120         if (!pegasus->intr_urb) {
1121                 usb_free_urb(pegasus->tx_urb);
1122                 usb_free_urb(pegasus->rx_urb);
1123                 usb_free_urb(pegasus->ctrl_urb);
1124                 kfree(pegasus);
1125                 return NULL;
1126         }
1127
1128         net = init_etherdev(NULL, 0);
1129         if (!net) {
1130                 usb_free_urb(pegasus->tx_urb);
1131                 usb_free_urb(pegasus->rx_urb);
1132                 usb_free_urb(pegasus->ctrl_urb);
1133                 kfree(pegasus);
1134                 return NULL;
1135         }
1136
1137         init_MUTEX(&pegasus->sem);
1138         down(&pegasus->sem);
1139         pegasus->usb = dev;
1140         pegasus->net = net;
1141         SET_MODULE_OWNER(net);
1142         net->priv = pegasus;
1143         net->open = pegasus_open;
1144         net->stop = pegasus_close;
1145         net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1146         net->tx_timeout = pegasus_tx_timeout;
1147         net->do_ioctl = pegasus_ioctl;
1148         net->hard_start_xmit = pegasus_start_xmit;
1149         net->set_multicast_list = pegasus_set_multicast;
1150         net->get_stats = pegasus_netdev_stats;
1151         net->mtu = PEGASUS_MTU;
1152         pegasus->mii.dev = net;
1153         pegasus->mii.mdio_read = mdio_read;
1154         pegasus->mii.mdio_write = mdio_write;
1155         pegasus->mii.phy_id_mask = 0x1f;
1156         pegasus->mii.reg_num_mask = 0x1f;
1157
1158         pegasus->features = usb_dev_id[dev_index].private;
1159 #ifdef  PEGASUS_USE_INTR
1160         get_interrupt_interval(pegasus);
1161 #endif
1162         if (reset_mac(pegasus)) {
1163                 err("can't reset MAC");
1164                 unregister_netdev(pegasus->net);
1165                 usb_free_urb(pegasus->tx_urb);
1166                 usb_free_urb(pegasus->rx_urb);
1167                 usb_free_urb(pegasus->ctrl_urb);
1168                 kfree(pegasus->net);
1169                 kfree(pegasus);
1170                 pegasus = NULL;
1171                 goto exit;
1172         }
1173
1174         info("%s: %s", net->name, usb_dev_id[dev_index].name);
1175
1176         set_ethernet_addr(pegasus);
1177
1178         if (pegasus->features & PEGASUS_II) {
1179                 info("setup Pegasus II specific registers");
1180                 setup_pegasus_II(pegasus);
1181         }
1182
1183         pegasus->phy = mii_phy_probe(pegasus);
1184         if (pegasus->phy == 0xff) {
1185                 warn("can't locate MII phy, using default");
1186                 pegasus->phy = 1;
1187         }
1188 exit:
1189         up(&pegasus->sem);
1190
1191         return pegasus;
1192 }
1193
1194 static void pegasus_disconnect(struct usb_device *dev, void *ptr)
1195 {
1196         struct pegasus *pegasus = ptr;
1197
1198         if (!pegasus) {
1199                 warn("unregistering non-existant device");
1200                 return;
1201         }
1202
1203         pegasus->flags |= PEGASUS_UNPLUG;
1204         unregister_netdev(pegasus->net);
1205         usb_dec_dev_use(dev);
1206         usb_unlink_urb(pegasus->intr_urb);
1207         usb_unlink_urb(pegasus->tx_urb);
1208         usb_unlink_urb(pegasus->rx_urb);
1209         usb_unlink_urb(pegasus->ctrl_urb);
1210         usb_free_urb(pegasus->intr_urb);
1211         usb_free_urb(pegasus->tx_urb);
1212         usb_free_urb(pegasus->rx_urb);
1213         usb_free_urb(pegasus->ctrl_urb);
1214         kfree(pegasus->net);
1215         kfree(pegasus);
1216         pegasus = NULL;
1217 }
1218
1219 static struct usb_driver pegasus_driver = {
1220         name:           driver_name,
1221         probe:          pegasus_probe,
1222         disconnect:     pegasus_disconnect,
1223         id_table:       pegasus_ids,
1224 };
1225
1226 int __init pegasus_init(void)
1227 {
1228         info(DRIVER_VERSION ":" DRIVER_DESC);
1229         return usb_register(&pegasus_driver);
1230 }
1231
1232 void __exit pegasus_exit(void)
1233 {
1234         usb_deregister(&pegasus_driver);
1235 }
1236
1237 module_init(pegasus_init);
1238 module_exit(pegasus_exit);