drivers/usb/net/pegasus.c

   1 /*
   2  *  Copyright (c) 1999-2005 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  *      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
  31 #include <linux/sched.h>
  32 #include <linux/slab.h>
  33 #include <linux/init.h>
  34 #include <linux/delay.h>
  35 #include <linux/netdevice.h>
  36 #include <linux/etherdevice.h>
  37 #include <linux/ethtool.h>
  38 #include <linux/mii.h>
  39 #include <linux/usb.h>
  40 #include <linux/module.h>
  41 #include <asm/byteorder.h>
  42 #include <asm/uaccess.h>
  43 #include "pegasus.h"
  44
  45 /*
  46  * Version Information
  47  */
  48 #define DRIVER_VERSION "v0.6.13 (2005/11/13)"
  49 #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
  50 #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
  51
  52 static const char driver_name[] = "pegasus";
  53
  54 #undef  PEGASUS_WRITE_EEPROM
  55 #define BMSR_MEDIA      (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
  56                         BMSR_100FULL | BMSR_ANEGCAPABLE)
  57
  58 static int loopback = 0;
  59 static int mii_mode = 0;
  60 static char *devid=NULL;
  61
  62 static struct usb_eth_dev usb_dev_id[] = {
  63 #define PEGASUS_DEV(pn, vid, pid, flags)        \
  64         {.name = pn, .vendor = vid, .device = pid, .private = flags},
  65 #include "pegasus.h"
  66 #undef  PEGASUS_DEV
  67         {NULL, 0, 0, 0},
  68         {NULL, 0, 0, 0}
  69 };
  70
  71 static struct usb_device_id pegasus_ids[] = {
  72 #define PEGASUS_DEV(pn, vid, pid, flags) \
  73         {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
  74 #include "pegasus.h"
  75 #undef  PEGASUS_DEV
  76         {},
  77         {}
  78 };
  79
  80 MODULE_AUTHOR(DRIVER_AUTHOR);
  81 MODULE_DESCRIPTION(DRIVER_DESC);
  82 MODULE_LICENSE("GPL");
  83 module_param(loopback, bool, 0);
  84 module_param(mii_mode, bool, 0);
  85 module_param(devid, charp, 0);
  86 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
  87 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
  88 MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
  89
  90 /* use ethtool to change the level for any given device */
  91 static int msg_level = -1;
  92 module_param (msg_level, int, 0);
  93 MODULE_PARM_DESC (msg_level, "Override default message level");
  94
  95 MODULE_DEVICE_TABLE(usb, pegasus_ids);
  96
  97 static int update_eth_regs_async(pegasus_t *);
  98 /* Aargh!!! I _really_ hate such tweaks */
  99 static void ctrl_callback(struct urb *urb, struct pt_regs *regs)
 100 {
 101         pegasus_t *pegasus = urb->context;
 102
 103         if (!pegasus)
 104                 return;
 105
 106         switch (urb->status) {
 107         case 0:
 108                 if (pegasus->flags & ETH_REGS_CHANGE) {
 109                         pegasus->flags &= ~ETH_REGS_CHANGE;
 110                         pegasus->flags |= ETH_REGS_CHANGED;
 111                         update_eth_regs_async(pegasus);
 112                         return;
 113                 }
 114                 break;
 115         case -EINPROGRESS:
 116                 return;
 117         case -ENOENT:
 118                 break;
 119         default:
 120                 if (netif_msg_drv(pegasus))
 121                         dev_dbg(&pegasus->intf->dev, "%s, status %d\n",
 122                                 __FUNCTION__, urb->status);
 123         }
 124         pegasus->flags &= ~ETH_REGS_CHANGED;
 125         wake_up(&pegasus->ctrl_wait);
 126 }
 127
 128 static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
 129                          void *data)
 130 {
 131         int ret;
 132         char *buffer;
 133         DECLARE_WAITQUEUE(wait, current);
 134
 135         buffer = kmalloc(size, GFP_KERNEL);
 136         if (!buffer) {
 137                 if (netif_msg_drv(pegasus))
 138                         dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
 139                                         __FUNCTION__);
 140                 return -ENOMEM;
 141         }
 142         add_wait_queue(&pegasus->ctrl_wait, &wait);
 143         set_current_state(TASK_UNINTERRUPTIBLE);
 144         while (pegasus->flags & ETH_REGS_CHANGED)
 145                 schedule();
 146         remove_wait_queue(&pegasus->ctrl_wait, &wait);
 147         set_current_state(TASK_RUNNING);
 148
 149         pegasus->dr.bRequestType = PEGASUS_REQT_READ;
 150         pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
 151         pegasus->dr.wValue = cpu_to_le16(0);
 152         pegasus->dr.wIndex = cpu_to_le16p(&indx);
 153         pegasus->dr.wLength = cpu_to_le16p(&size);
 154         pegasus->ctrl_urb->transfer_buffer_length = size;
 155
 156         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
 157                              usb_rcvctrlpipe(pegasus->usb, 0),
 158                              (char *) &pegasus->dr,
 159                              buffer, size, ctrl_callback, pegasus);
 160
 161         add_wait_queue(&pegasus->ctrl_wait, &wait);
 162         set_current_state(TASK_UNINTERRUPTIBLE);
 163
 164         /* using ATOMIC, we'd never wake up if we slept */
 165         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
 166                 if (netif_msg_drv(pegasus))
 167                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
 168                                         __FUNCTION__, ret);
 169                 goto out;
 170         }
 171
 172         schedule();
 173 out:
 174         remove_wait_queue(&pegasus->ctrl_wait, &wait);
 175         memcpy(data, buffer, size);
 176         kfree(buffer);
 177
 178         return ret;
 179 }
 180
 181 static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
 182                          void *data)
 183 {
 184         int ret;
 185         char *buffer;
 186         DECLARE_WAITQUEUE(wait, current);
 187
 188         buffer = kmalloc(size, GFP_KERNEL);
 189         if (!buffer) {
 190                 if (netif_msg_drv(pegasus))
 191                         dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
 192                                         __FUNCTION__);
 193                 return -ENOMEM;
 194         }
 195         memcpy(buffer, data, size);
 196
 197         add_wait_queue(&pegasus->ctrl_wait, &wait);
 198         set_current_state(TASK_UNINTERRUPTIBLE);
 199         while (pegasus->flags & ETH_REGS_CHANGED)
 200                 schedule();
 201         remove_wait_queue(&pegasus->ctrl_wait, &wait);
 202         set_current_state(TASK_RUNNING);
 203
 204         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
 205         pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
 206         pegasus->dr.wValue = cpu_to_le16(0);
 207         pegasus->dr.wIndex = cpu_to_le16p(&indx);
 208         pegasus->dr.wLength = cpu_to_le16p(&size);
 209         pegasus->ctrl_urb->transfer_buffer_length = size;
 210
 211         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
 212                              usb_sndctrlpipe(pegasus->usb, 0),
 213                              (char *) &pegasus->dr,
 214                              buffer, size, ctrl_callback, pegasus);
 215
 216         add_wait_queue(&pegasus->ctrl_wait, &wait);
 217         set_current_state(TASK_UNINTERRUPTIBLE);
 218
 219         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
 220                 if (netif_msg_drv(pegasus))
 221                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
 222                                         __FUNCTION__, ret);
 223                 goto out;
 224         }
 225
 226         schedule();
 227 out:
 228         remove_wait_queue(&pegasus->ctrl_wait, &wait);
 229         kfree(buffer);
 230
 231         return ret;
 232 }
 233
 234 static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
 235 {
 236         int ret;
 237         char *tmp;
 238         DECLARE_WAITQUEUE(wait, current);
 239
 240         tmp = kmalloc(1, GFP_KERNEL);
 241         if (!tmp) {
 242                 if (netif_msg_drv(pegasus))
 243                         dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
 244                                         __FUNCTION__);
 245                 return -ENOMEM;
 246         }
 247         memcpy(tmp, &data, 1);
 248         add_wait_queue(&pegasus->ctrl_wait, &wait);
 249         set_current_state(TASK_UNINTERRUPTIBLE);
 250         while (pegasus->flags & ETH_REGS_CHANGED)
 251                 schedule();
 252         remove_wait_queue(&pegasus->ctrl_wait, &wait);
 253         set_current_state(TASK_RUNNING);
 254
 255         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
 256         pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
 257         pegasus->dr.wValue = cpu_to_le16(data);
 258         pegasus->dr.wIndex = cpu_to_le16p(&indx);
 259         pegasus->dr.wLength = cpu_to_le16(1);
 260         pegasus->ctrl_urb->transfer_buffer_length = 1;
 261
 262         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
 263                              usb_sndctrlpipe(pegasus->usb, 0),
 264                              (char *) &pegasus->dr,
 265                              tmp, 1, ctrl_callback, pegasus);
 266
 267         add_wait_queue(&pegasus->ctrl_wait, &wait);
 268         set_current_state(TASK_UNINTERRUPTIBLE);
 269
 270         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
 271                 if (netif_msg_drv(pegasus))
 272                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
 273                                         __FUNCTION__, ret);
 274                 goto out;
 275         }
 276
 277         schedule();
 278 out:
 279         remove_wait_queue(&pegasus->ctrl_wait, &wait);
 280         kfree(tmp);
 281
 282         return ret;
 283 }
 284
 285 static int update_eth_regs_async(pegasus_t * pegasus)
 286 {
 287         int ret;
 288
 289         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
 290         pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
 291         pegasus->dr.wValue = 0;
 292         pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
 293         pegasus->dr.wLength = cpu_to_le16(3);
 294         pegasus->ctrl_urb->transfer_buffer_length = 3;
 295
 296         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
 297                              usb_sndctrlpipe(pegasus->usb, 0),
 298                              (char *) &pegasus->dr,
 299                              pegasus->eth_regs, 3, ctrl_callback, pegasus);
 300
 301         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC)))
 302                 if (netif_msg_drv(pegasus))
 303                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
 304                                         __FUNCTION__, ret);
 305
 306         return ret;
 307 }
 308
 309 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
 310 {
 311         int i;
 312         __u8 data[4] = { phy, 0, 0, indx };
 313         __le16 regdi;
 314         int ret;
 315
 316         set_register(pegasus, PhyCtrl, 0);
 317         set_registers(pegasus, PhyAddr, sizeof (data), data);
 318         set_register(pegasus, PhyCtrl, (indx | PHY_READ));
 319         for (i = 0; i < REG_TIMEOUT; i++) {
 320                 ret = get_registers(pegasus, PhyCtrl, 1, data);
 321                 if (ret == -ESHUTDOWN)
 322                         goto fail;
 323                 if (data[0] & PHY_DONE)
 324                         break;
 325         }
 326         if (i < REG_TIMEOUT) {
 327                 ret = get_registers(pegasus, PhyData, 2, &regdi);
 328                 *regd = le16_to_cpu(regdi);
 329                 return ret;
 330         }
 331 fail:
 332         if (netif_msg_drv(pegasus))
 333                 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
 334
 335         return ret;
 336 }
 337
 338 static int mdio_read(struct net_device *dev, int phy_id, int loc)
 339 {
 340         pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
 341         u16 res;
 342
 343         read_mii_word(pegasus, phy_id, loc, &res);
 344         return (int)res;
 345 }
 346
 347 static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
 348 {
 349         int i;
 350         __u8 data[4] = { phy, 0, 0, indx };
 351         int ret;
 352
 353         data[1] = (u8) regd;
 354         data[2] = (u8) (regd >> 8);
 355         set_register(pegasus, PhyCtrl, 0);
 356         set_registers(pegasus, PhyAddr, sizeof(data), data);
 357         set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
 358         for (i = 0; i < REG_TIMEOUT; i++) {
 359                 ret = get_registers(pegasus, PhyCtrl, 1, data);
 360                 if (ret == -ESHUTDOWN)
 361                         goto fail;
 362                 if (data[0] & PHY_DONE)
 363                         break;
 364         }
 365         if (i < REG_TIMEOUT)
 366                 return ret;
 367
 368 fail:
 369         if (netif_msg_drv(pegasus))
 370                 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
 371         return -ETIMEDOUT;
 372 }
 373
 374 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
 375 {
 376         pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
 377
 378         write_mii_word(pegasus, phy_id, loc, val);
 379 }
 380
 381 static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
 382 {
 383         int i;
 384         __u8 tmp;
 385         __le16 retdatai;
 386         int ret;
 387
 388         set_register(pegasus, EpromCtrl, 0);
 389         set_register(pegasus, EpromOffset, index);
 390         set_register(pegasus, EpromCtrl, EPROM_READ);
 391
 392         for (i = 0; i < REG_TIMEOUT; i++) {
 393                 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
 394                 if (tmp & EPROM_DONE)
 395                         break;
 396                 if (ret == -ESHUTDOWN)
 397                         goto fail;
 398         }
 399         if (i < REG_TIMEOUT) {
 400                 ret = get_registers(pegasus, EpromData, 2, &retdatai);
 401                 *retdata = le16_to_cpu(retdatai);
 402                 return ret;
 403         }
 404
 405 fail:
 406         if (netif_msg_drv(pegasus))
 407                 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
 408         return -ETIMEDOUT;
 409 }
 410
 411 #ifdef  PEGASUS_WRITE_EEPROM
 412 static inline void enable_eprom_write(pegasus_t * pegasus)
 413 {
 414         __u8 tmp;
 415         int ret;
 416
 417         get_registers(pegasus, EthCtrl2, 1, &tmp);
 418         set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
 419 }
 420
 421 static inline void disable_eprom_write(pegasus_t * pegasus)
 422 {
 423         __u8 tmp;
 424         int ret;
 425
 426         get_registers(pegasus, EthCtrl2, 1, &tmp);
 427         set_register(pegasus, EpromCtrl, 0);
 428         set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
 429 }
 430
 431 static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
 432 {
 433         int i;
 434         __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
 435         int ret;
 436
 437         set_registers(pegasus, EpromOffset, 4, d);
 438         enable_eprom_write(pegasus);
 439         set_register(pegasus, EpromOffset, index);
 440         set_registers(pegasus, EpromData, 2, &data);
 441         set_register(pegasus, EpromCtrl, EPROM_WRITE);
 442
 443         for (i = 0; i < REG_TIMEOUT; i++) {
 444                 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
 445                 if (ret == -ESHUTDOWN)
 446                         goto fail;
 447                 if (tmp & EPROM_DONE)
 448                         break;
 449         }
 450         disable_eprom_write(pegasus);
 451         if (i < REG_TIMEOUT)
 452                 return ret;
 453 fail:
 454         if (netif_msg_drv(pegasus))
 455                 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
 456         return -ETIMEDOUT;
 457 }
 458 #endif                          /* PEGASUS_WRITE_EEPROM */
 459
 460 static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
 461 {
 462         int i;
 463         __u16 w16;
 464
 465         for (i = 0; i < 3; i++) {
 466                 read_eprom_word(pegasus, i, &w16);
 467                 ((__le16 *) id)[i] = cpu_to_le16p(&w16);
 468         }
 469 }
 470
 471 static void set_ethernet_addr(pegasus_t * pegasus)
 472 {
 473         __u8 node_id[6];
 474
 475         get_node_id(pegasus, node_id);
 476         set_registers(pegasus, EthID, sizeof (node_id), node_id);
 477         memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
 478 }
 479
 480 static inline int reset_mac(pegasus_t * pegasus)
 481 {
 482         __u8 data = 0x8;
 483         int i;
 484
 485         set_register(pegasus, EthCtrl1, data);
 486         for (i = 0; i < REG_TIMEOUT; i++) {
 487                 get_registers(pegasus, EthCtrl1, 1, &data);
 488                 if (~data & 0x08) {
 489                         if (loopback & 1)
 490                                 break;
 491                         if (mii_mode && (pegasus->features & HAS_HOME_PNA))
 492                                 set_register(pegasus, Gpio1, 0x34);
 493                         else
 494                                 set_register(pegasus, Gpio1, 0x26);
 495                         set_register(pegasus, Gpio0, pegasus->features);
 496                         set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
 497                         break;
 498                 }
 499         }
 500         if (i == REG_TIMEOUT)
 501                 return -ETIMEDOUT;
 502
 503         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
 504             usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
 505                 set_register(pegasus, Gpio0, 0x24);
 506                 set_register(pegasus, Gpio0, 0x26);
 507         }
 508         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
 509                 __u16 auxmode;
 510                 read_mii_word(pegasus, 3, 0x1b, &auxmode);
 511                 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
 512         }
 513
 514         return 0;
 515 }
 516
 517 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
 518 {
 519         __u16 linkpart;
 520         __u8 data[4];
 521         pegasus_t *pegasus = netdev_priv(dev);
 522         int ret;
 523
 524         read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
 525         data[0] = 0xc9;
 526         data[1] = 0;
 527         if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
 528                 data[1] |= 0x20;        /* set full duplex */
 529         if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
 530                 data[1] |= 0x10;        /* set 100 Mbps */
 531         if (mii_mode)
 532                 data[1] = 0;
 533         data[2] = (loopback & 1) ? 0x09 : 0x01;
 534
 535         memcpy(pegasus->eth_regs, data, sizeof (data));
 536         ret = set_registers(pegasus, EthCtrl0, 3, data);
 537
 538         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
 539             usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
 540             usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
 541                 u16 auxmode;
 542                 read_mii_word(pegasus, 0, 0x1b, &auxmode);
 543                 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
 544         }
 545
 546         return ret;
 547 }
 548
 549 static void fill_skb_pool(pegasus_t * pegasus)
 550 {
 551         int i;
 552
 553         for (i = 0; i < RX_SKBS; i++) {
 554                 if (pegasus->rx_pool[i])
 555                         continue;
 556                 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
 557                 /*
 558                  ** we give up if the allocation fail. the tasklet will be
 559                  ** rescheduled again anyway...
 560                  */
 561                 if (pegasus->rx_pool[i] == NULL)
 562                         return;
 563                 pegasus->rx_pool[i]->dev = pegasus->net;
 564                 skb_reserve(pegasus->rx_pool[i], 2);
 565         }
 566 }
 567
 568 static void free_skb_pool(pegasus_t * pegasus)
 569 {
 570         int i;
 571
 572         for (i = 0; i < RX_SKBS; i++) {
 573                 if (pegasus->rx_pool[i]) {
 574                         dev_kfree_skb(pegasus->rx_pool[i]);
 575                         pegasus->rx_pool[i] = NULL;
 576                 }
 577         }
 578 }
 579
 580 static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
 581 {
 582         int i;
 583         struct sk_buff *skb;
 584
 585         for (i = 0; i < RX_SKBS; i++) {
 586                 if (likely(pegasus->rx_pool[i] != NULL)) {
 587                         skb = pegasus->rx_pool[i];
 588                         pegasus->rx_pool[i] = NULL;
 589                         return skb;
 590                 }
 591         }
 592         return NULL;
 593 }
 594
 595 static void read_bulk_callback(struct urb *urb, struct pt_regs *regs)
 596 {
 597         pegasus_t *pegasus = urb->context;
 598         struct net_device *net;
 599         int rx_status, count = urb->actual_length;
 600         u8 *buf = urb->transfer_buffer;
 601         __u16 pkt_len;
 602
 603         if (!pegasus)
 604                 return;
 605
 606         net = pegasus->net;
 607         if (!netif_device_present(net) || !netif_running(net))
 608                 return;
 609
 610         switch (urb->status) {
 611         case 0:
 612                 break;
 613         case -ETIMEDOUT:
 614                 if (netif_msg_rx_err(pegasus))
 615                         pr_debug("%s: reset MAC\n", net->name);
 616                 pegasus->flags &= ~PEGASUS_RX_BUSY;
 617                 break;
 618         case -EPIPE:            /* stall, or disconnect from TT */
 619                 /* FIXME schedule work to clear the halt */
 620                 if (netif_msg_rx_err(pegasus))
 621                         printk(KERN_WARNING "%s: no rx stall recovery\n",
 622                                         net->name);
 623                 return;
 624         case -ENOENT:
 625         case -ECONNRESET:
 626         case -ESHUTDOWN:
 627                 if (netif_msg_ifdown(pegasus))
 628                         pr_debug("%s: rx unlink, %d\n", net->name, urb->status);
 629                 return;
 630         default:
 631                 if (netif_msg_rx_err(pegasus))
 632                         pr_debug("%s: RX status %d\n", net->name, urb->status);
 633                 goto goon;
 634         }
 635
 636         if (!count || count < 4)
 637                 goto goon;
 638
 639         rx_status = buf[count - 2];
 640         if (rx_status & 0x1e) {
 641                 if (netif_msg_rx_err(pegasus))
 642                         pr_debug("%s: RX packet error %x\n",
 643                                         net->name, rx_status);
 644                 pegasus->stats.rx_errors++;
 645                 if (rx_status & 0x06)   // long or runt
 646                         pegasus->stats.rx_length_errors++;
 647                 if (rx_status & 0x08)
 648                         pegasus->stats.rx_crc_errors++;
 649                 if (rx_status & 0x10)   // extra bits
 650                         pegasus->stats.rx_frame_errors++;
 651                 goto goon;
 652         }
 653         if (pegasus->chip == 0x8513) {
 654                 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
 655                 pkt_len &= 0x0fff;
 656                 pegasus->rx_skb->data += 2;
 657         } else {
 658                 pkt_len = buf[count - 3] << 8;
 659                 pkt_len += buf[count - 4];
 660                 pkt_len &= 0xfff;
 661                 pkt_len -= 8;
 662         }
 663
 664         /*
 665          * If the packet is unreasonably long, quietly drop it rather than
 666          * kernel panicing by calling skb_put.
 667          */
 668         if (pkt_len > PEGASUS_MTU)
 669                 goto goon;
 670
 671         /*
 672          * at this point we are sure pegasus->rx_skb != NULL
 673          * so we go ahead and pass up the packet.
 674          */
 675         skb_put(pegasus->rx_skb, pkt_len);
 676         pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
 677         netif_rx(pegasus->rx_skb);
 678         pegasus->stats.rx_packets++;
 679         pegasus->stats.rx_bytes += pkt_len;
 680
 681         if (pegasus->flags & PEGASUS_UNPLUG)
 682                 return;
 683
 684         spin_lock(&pegasus->rx_pool_lock);
 685         pegasus->rx_skb = pull_skb(pegasus);
 686         spin_unlock(&pegasus->rx_pool_lock);
 687
 688         if (pegasus->rx_skb == NULL)
 689                 goto tl_sched;
 690 goon:
 691         usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
 692                           usb_rcvbulkpipe(pegasus->usb, 1),
 693                           pegasus->rx_skb->data, PEGASUS_MTU + 8,
 694                           read_bulk_callback, pegasus);
 695         if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
 696                 pegasus->flags |= PEGASUS_RX_URB_FAIL;
 697                 goto tl_sched;
 698         } else {
 699                 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
 700         }
 701
 702         return;
 703
 704 tl_sched:
 705         tasklet_schedule(&pegasus->rx_tl);
 706 }
 707
 708 static void rx_fixup(unsigned long data)
 709 {
 710         pegasus_t *pegasus;
 711         unsigned long flags;
 712
 713         pegasus = (pegasus_t *) data;
 714         if (pegasus->flags & PEGASUS_UNPLUG)
 715                 return;
 716
 717         spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
 718         fill_skb_pool(pegasus);
 719         if (pegasus->flags & PEGASUS_RX_URB_FAIL)
 720                 if (pegasus->rx_skb)
 721                         goto try_again;
 722         if (pegasus->rx_skb == NULL) {
 723                 pegasus->rx_skb = pull_skb(pegasus);
 724         }
 725         if (pegasus->rx_skb == NULL) {
 726                 if (netif_msg_rx_err(pegasus))
 727                         printk(KERN_WARNING "%s: low on memory\n",
 728                                         pegasus->net->name);
 729                 tasklet_schedule(&pegasus->rx_tl);
 730                 goto done;
 731         }
 732         usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
 733                           usb_rcvbulkpipe(pegasus->usb, 1),
 734                           pegasus->rx_skb->data, PEGASUS_MTU + 8,
 735                           read_bulk_callback, pegasus);
 736 try_again:
 737         if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
 738                 pegasus->flags |= PEGASUS_RX_URB_FAIL;
 739                 tasklet_schedule(&pegasus->rx_tl);
 740         } else {
 741                 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
 742         }
 743 done:
 744         spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
 745 }
 746
 747 static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
 748 {
 749         pegasus_t *pegasus = urb->context;
 750         struct net_device *net = pegasus->net;
 751
 752         if (!pegasus)
 753                 return;
 754
 755         if (!netif_device_present(net) || !netif_running(net))
 756                 return;
 757
 758         switch (urb->status) {
 759         case -EPIPE:
 760                 /* FIXME schedule_work() to clear the tx halt */
 761                 netif_stop_queue(net);
 762                 if (netif_msg_tx_err(pegasus))
 763                         printk(KERN_WARNING "%s: no tx stall recovery\n",
 764                                         net->name);
 765                 return;
 766         case -ENOENT:
 767         case -ECONNRESET:
 768         case -ESHUTDOWN:
 769                 if (netif_msg_ifdown(pegasus))
 770                         pr_debug("%s: tx unlink, %d\n", net->name, urb->status);
 771                 return;
 772         default:
 773                 if (netif_msg_tx_err(pegasus))
 774                         pr_info("%s: TX status %d\n", net->name, urb->status);
 775                 /* FALL THROUGH */
 776         case 0:
 777                 break;
 778         }
 779
 780         net->trans_start = jiffies;
 781         netif_wake_queue(net);
 782 }
 783
 784 static void intr_callback(struct urb *urb, struct pt_regs *regs)
 785 {
 786         pegasus_t *pegasus = urb->context;
 787         struct net_device *net;
 788         int status;
 789
 790         if (!pegasus)
 791                 return;
 792         net = pegasus->net;
 793
 794         switch (urb->status) {
 795         case 0:
 796                 break;
 797         case -ECONNRESET:       /* unlink */
 798         case -ENOENT:
 799         case -ESHUTDOWN:
 800                 return;
 801         default:
 802                 /* some Pegasus-I products report LOTS of data
 803                  * toggle errors... avoid log spamming
 804                  */
 805                 if (netif_msg_timer(pegasus))
 806                         pr_debug("%s: intr status %d\n", net->name,
 807                                         urb->status);
 808         }
 809
 810         if (urb->actual_length >= 6) {
 811                 u8      * d = urb->transfer_buffer;
 812
 813                 /* byte 0 == tx_status1, reg 2B */
 814                 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
 815                                         |LATE_COL|JABBER_TIMEOUT)) {
 816                         pegasus->stats.tx_errors++;
 817                         if (d[0] & TX_UNDERRUN)
 818                                 pegasus->stats.tx_fifo_errors++;
 819                         if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
 820                                 pegasus->stats.tx_aborted_errors++;
 821                         if (d[0] & LATE_COL)
 822                                 pegasus->stats.tx_window_errors++;
 823                 }
 824
 825                 /* d[5].LINK_STATUS lies on some adapters.
 826                  * d[0].NO_CARRIER kicks in only with failed TX.
 827                  * ... so monitoring with MII may be safest.
 828                  */
 829                 if (d[0] & NO_CARRIER)
 830                         netif_carrier_off(net);
 831                 else
 832                         netif_carrier_on(net);
 833
 834                 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
 835                 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
 836         }
 837
 838         status = usb_submit_urb(urb, SLAB_ATOMIC);
 839         if (status && netif_msg_timer(pegasus))
 840                 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
 841                                 net->name, status);
 842 }
 843
 844 static void pegasus_tx_timeout(struct net_device *net)
 845 {
 846         pegasus_t *pegasus = netdev_priv(net);
 847         if (netif_msg_timer(pegasus))
 848                 printk(KERN_WARNING "%s: tx timeout\n", net->name);
 849         usb_unlink_urb(pegasus->tx_urb);
 850         pegasus->stats.tx_errors++;
 851 }
 852
 853 static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
 854 {
 855         pegasus_t *pegasus = netdev_priv(net);
 856         int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
 857         int res;
 858         __u16 l16 = skb->len;
 859
 860         netif_stop_queue(net);
 861
 862         ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
 863         memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
 864         usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
 865                           usb_sndbulkpipe(pegasus->usb, 2),
 866                           pegasus->tx_buff, count,
 867                           write_bulk_callback, pegasus);
 868         if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
 869                 if (netif_msg_tx_err(pegasus))
 870                         printk(KERN_WARNING "%s: fail tx, %d\n",
 871                                         net->name, res);
 872                 switch (res) {
 873                 case -EPIPE:            /* stall, or disconnect from TT */
 874                         /* cleanup should already have been scheduled */
 875                         break;
 876                 case -ENODEV:           /* disconnect() upcoming */
 877                         break;
 878                 default:
 879                         pegasus->stats.tx_errors++;
 880                         netif_start_queue(net);
 881                 }
 882         } else {
 883                 pegasus->stats.tx_packets++;
 884                 pegasus->stats.tx_bytes += skb->len;
 885                 net->trans_start = jiffies;
 886         }
 887         dev_kfree_skb(skb);
 888
 889         return 0;
 890 }
 891
 892 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
 893 {
 894         return &((pegasus_t *) netdev_priv(dev))->stats;
 895 }
 896
 897 static inline void disable_net_traffic(pegasus_t * pegasus)
 898 {
 899         int tmp = 0;
 900
 901         set_registers(pegasus, EthCtrl0, 2, &tmp);
 902 }
 903
 904 static inline void get_interrupt_interval(pegasus_t * pegasus)
 905 {
 906         __u8 data[2];
 907
 908         read_eprom_word(pegasus, 4, (__u16 *) data);
 909         if (pegasus->usb->speed != USB_SPEED_HIGH) {
 910                 if (data[1] < 0x80) {
 911                         if (netif_msg_timer(pegasus))
 912                                 dev_info(&pegasus->intf->dev, "intr interval "
 913                                         "changed from %ums to %ums\n",
 914                                         data[1], 0x80);
 915                         data[1] = 0x80;
 916 #ifdef PEGASUS_WRITE_EEPROM
 917                         write_eprom_word(pegasus, 4, *(__u16 *) data);
 918 #endif
 919                 }
 920         }
 921         pegasus->intr_interval = data[1];
 922 }
 923
 924 static void set_carrier(struct net_device *net)
 925 {
 926         pegasus_t *pegasus = netdev_priv(net);
 927         u16 tmp;
 928
 929         if (!read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
 930                 return;
 931
 932         if (tmp & BMSR_LSTATUS)
 933                 netif_carrier_on(net);
 934         else
 935                 netif_carrier_off(net);
 936 }
 937
 938 static void free_all_urbs(pegasus_t * pegasus)
 939 {
 940         usb_free_urb(pegasus->intr_urb);
 941         usb_free_urb(pegasus->tx_urb);
 942         usb_free_urb(pegasus->rx_urb);
 943         usb_free_urb(pegasus->ctrl_urb);
 944 }
 945
 946 static void unlink_all_urbs(pegasus_t * pegasus)
 947 {
 948         usb_kill_urb(pegasus->intr_urb);
 949         usb_kill_urb(pegasus->tx_urb);
 950         usb_kill_urb(pegasus->rx_urb);
 951         usb_kill_urb(pegasus->ctrl_urb);
 952 }
 953
 954 static int alloc_urbs(pegasus_t * pegasus)
 955 {
 956         pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
 957         if (!pegasus->ctrl_urb) {
 958                 return 0;
 959         }
 960         pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
 961         if (!pegasus->rx_urb) {
 962                 usb_free_urb(pegasus->ctrl_urb);
 963                 return 0;
 964         }
 965         pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
 966         if (!pegasus->tx_urb) {
 967                 usb_free_urb(pegasus->rx_urb);
 968                 usb_free_urb(pegasus->ctrl_urb);
 969                 return 0;
 970         }
 971         pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
 972         if (!pegasus->intr_urb) {
 973                 usb_free_urb(pegasus->tx_urb);
 974                 usb_free_urb(pegasus->rx_urb);
 975                 usb_free_urb(pegasus->ctrl_urb);
 976                 return 0;
 977         }
 978
 979         return 1;
 980 }
 981
 982 static int pegasus_open(struct net_device *net)
 983 {
 984         pegasus_t *pegasus = netdev_priv(net);
 985         int res;
 986
 987         if (pegasus->rx_skb == NULL)
 988                 pegasus->rx_skb = pull_skb(pegasus);
 989         /*
 990          ** Note: no point to free the pool.  it is empty :-)
 991          */
 992         if (!pegasus->rx_skb)
 993                 return -ENOMEM;
 994
 995         res = set_registers(pegasus, EthID, 6, net->dev_addr);
 996
 997         usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
 998                           usb_rcvbulkpipe(pegasus->usb, 1),
 999                           pegasus->rx_skb->data, PEGASUS_MTU + 8,
1000                           read_bulk_callback, pegasus);
1001         if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
1002                 if (netif_msg_ifup(pegasus))
1003                         pr_debug("%s: failed rx_urb, %d", net->name, res);
1004                 goto exit;
1005         }
1006
1007         usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
1008                          usb_rcvintpipe(pegasus->usb, 3),
1009                          pegasus->intr_buff, sizeof (pegasus->intr_buff),
1010                          intr_callback, pegasus, pegasus->intr_interval);
1011         if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
1012                 if (netif_msg_ifup(pegasus))
1013                         pr_debug("%s: failed intr_urb, %d\n", net->name, res);
1014                 usb_kill_urb(pegasus->rx_urb);
1015                 goto exit;
1016         }
1017         if ((res = enable_net_traffic(net, pegasus->usb))) {
1018                 if (netif_msg_ifup(pegasus))
1019                         pr_debug("%s: can't enable_net_traffic() - %d\n",
1020                                         net->name, res);
1021                 res = -EIO;
1022                 usb_kill_urb(pegasus->rx_urb);
1023                 usb_kill_urb(pegasus->intr_urb);
1024                 free_skb_pool(pegasus);
1025                 goto exit;
1026         }
1027         set_carrier(net);
1028         netif_start_queue(net);
1029         if (netif_msg_ifup(pegasus))
1030                 pr_debug("%s: open\n", net->name);
1031         res = 0;
1032 exit:
1033         return res;
1034 }
1035
1036 static int pegasus_close(struct net_device *net)
1037 {
1038         pegasus_t *pegasus = netdev_priv(net);
1039
1040         netif_stop_queue(net);
1041         if (!(pegasus->flags & PEGASUS_UNPLUG))
1042                 disable_net_traffic(pegasus);
1043         tasklet_kill(&pegasus->rx_tl);
1044         unlink_all_urbs(pegasus);
1045
1046         return 0;
1047 }
1048
1049 static void pegasus_get_drvinfo(struct net_device *dev,
1050                                 struct ethtool_drvinfo *info)
1051 {
1052         pegasus_t *pegasus = netdev_priv(dev);
1053         strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1054         strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1055         usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1056 }
1057
1058 /* also handles three patterns of some kind in hardware */
1059 #define WOL_SUPPORTED   (WAKE_MAGIC|WAKE_PHY)
1060
1061 static void
1062 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1063 {
1064         pegasus_t       *pegasus = netdev_priv(dev);
1065
1066         wol->supported = WAKE_MAGIC | WAKE_PHY;
1067         wol->wolopts = pegasus->wolopts;
1068 }
1069
1070 static int
1071 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1072 {
1073         pegasus_t       *pegasus = netdev_priv(dev);
1074         u8              reg78 = 0x04;
1075
1076         if (wol->wolopts & ~WOL_SUPPORTED)
1077                 return -EINVAL;
1078
1079         if (wol->wolopts & WAKE_MAGIC)
1080                 reg78 |= 0x80;
1081         if (wol->wolopts & WAKE_PHY)
1082                 reg78 |= 0x40;
1083         /* FIXME this 0x10 bit still needs to get set in the chip... */
1084         if (wol->wolopts)
1085                 pegasus->eth_regs[0] |= 0x10;
1086         else
1087                 pegasus->eth_regs[0] &= ~0x10;
1088         pegasus->wolopts = wol->wolopts;
1089         return set_register(pegasus, WakeupControl, reg78);
1090 }
1091
1092 static inline void pegasus_reset_wol(struct net_device *dev)
1093 {
1094         struct ethtool_wolinfo wol;
1095
1096         memset(&wol, 0, sizeof wol);
1097         (void) pegasus_set_wol(dev, &wol);
1098 }
1099
1100 static int
1101 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1102 {
1103         pegasus_t *pegasus;
1104
1105         if (in_atomic())
1106                 return 0;
1107
1108         pegasus = netdev_priv(dev);
1109         mii_ethtool_gset(&pegasus->mii, ecmd);
1110
1111         return 0;
1112 }
1113
1114 static int
1115 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1116 {
1117         pegasus_t *pegasus = netdev_priv(dev);
1118         return mii_ethtool_sset(&pegasus->mii, ecmd);
1119 }
1120
1121 static int pegasus_nway_reset(struct net_device *dev)
1122 {
1123         pegasus_t *pegasus = netdev_priv(dev);
1124         return mii_nway_restart(&pegasus->mii);
1125 }
1126
1127 static u32 pegasus_get_link(struct net_device *dev)
1128 {
1129         pegasus_t *pegasus = netdev_priv(dev);
1130         return mii_link_ok(&pegasus->mii);
1131 }
1132
1133 static u32 pegasus_get_msglevel(struct net_device *dev)
1134 {
1135         pegasus_t *pegasus = netdev_priv(dev);
1136         return pegasus->msg_enable;
1137 }
1138
1139 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1140 {
1141         pegasus_t *pegasus = netdev_priv(dev);
1142         pegasus->msg_enable = v;
1143 }
1144
1145 static struct ethtool_ops ops = {
1146         .get_drvinfo = pegasus_get_drvinfo,
1147         .get_settings = pegasus_get_settings,
1148         .set_settings = pegasus_set_settings,
1149         .nway_reset = pegasus_nway_reset,
1150         .get_link = pegasus_get_link,
1151         .get_msglevel = pegasus_get_msglevel,
1152         .set_msglevel = pegasus_set_msglevel,
1153         .get_wol = pegasus_get_wol,
1154         .set_wol = pegasus_set_wol,
1155 };
1156
1157 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1158 {
1159         __u16 *data = (__u16 *) & rq->ifr_ifru;
1160         pegasus_t *pegasus = netdev_priv(net);
1161         int res;
1162
1163         switch (cmd) {
1164         case SIOCDEVPRIVATE:
1165                 data[0] = pegasus->phy;
1166         case SIOCDEVPRIVATE + 1:
1167                 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1168                 res = 0;
1169                 break;
1170         case SIOCDEVPRIVATE + 2:
1171                 if (!capable(CAP_NET_ADMIN))
1172                         return -EPERM;
1173                 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1174                 res = 0;
1175                 break;
1176         default:
1177                 res = -EOPNOTSUPP;
1178         }
1179         return res;
1180 }
1181
1182 static void pegasus_set_multicast(struct net_device *net)
1183 {
1184         pegasus_t *pegasus = netdev_priv(net);
1185
1186         if (net->flags & IFF_PROMISC) {
1187                 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1188                 if (netif_msg_link(pegasus))
1189                         pr_info("%s: Promiscuous mode enabled.\n", net->name);
1190         } else if (net->mc_count ||
1191                    (net->flags & IFF_ALLMULTI)) {
1192                 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1193                 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1194                 if (netif_msg_link(pegasus))
1195                         pr_info("%s: set allmulti\n", net->name);
1196         } else {
1197                 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1198                 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1199         }
1200
1201         pegasus->flags |= ETH_REGS_CHANGE;
1202         ctrl_callback(pegasus->ctrl_urb, NULL);
1203 }
1204
1205 static __u8 mii_phy_probe(pegasus_t * pegasus)
1206 {
1207         int i;
1208         __u16 tmp;
1209
1210         for (i = 0; i < 32; i++) {
1211                 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1212                 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1213                         continue;
1214                 else
1215                         return i;
1216         }
1217
1218         return 0xff;
1219 }
1220
1221 static inline void setup_pegasus_II(pegasus_t * pegasus)
1222 {
1223         __u8 data = 0xa5;
1224
1225         set_register(pegasus, Reg1d, 0);
1226         set_register(pegasus, Reg7b, 1);
1227         mdelay(100);
1228         if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1229                 set_register(pegasus, Reg7b, 0);
1230         else
1231                 set_register(pegasus, Reg7b, 2);
1232
1233         set_register(pegasus, 0x83, data);
1234         get_registers(pegasus, 0x83, 1, &data);
1235
1236         if (data == 0xa5) {
1237                 pegasus->chip = 0x8513;
1238         } else {
1239                 pegasus->chip = 0;
1240         }
1241
1242         set_register(pegasus, 0x80, 0xc0);
1243         set_register(pegasus, 0x83, 0xff);
1244         set_register(pegasus, 0x84, 0x01);
1245
1246         if (pegasus->features & HAS_HOME_PNA && mii_mode)
1247                 set_register(pegasus, Reg81, 6);
1248         else
1249                 set_register(pegasus, Reg81, 2);
1250 }
1251
1252
1253 static struct workqueue_struct *pegasus_workqueue = NULL;
1254 #define CARRIER_CHECK_DELAY (2 * HZ)
1255
1256 static void check_carrier(void *data)
1257 {
1258         pegasus_t *pegasus = data;
1259         set_carrier(pegasus->net);
1260         if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1261                 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1262                         CARRIER_CHECK_DELAY);
1263         }
1264 }
1265
1266 static int pegasus_probe(struct usb_interface *intf,
1267                          const struct usb_device_id *id)
1268 {
1269         struct usb_device *dev = interface_to_usbdev(intf);
1270         struct net_device *net;
1271         pegasus_t *pegasus;
1272         int dev_index = id - pegasus_ids;
1273         int res = -ENOMEM;
1274
1275         usb_get_dev(dev);
1276         net = alloc_etherdev(sizeof(struct pegasus));
1277         if (!net) {
1278                 dev_err(&intf->dev, "can't allocate %s\n", "device");
1279                 goto out;
1280         }
1281
1282         pegasus = netdev_priv(net);
1283         memset(pegasus, 0, sizeof (struct pegasus));
1284         pegasus->dev_index = dev_index;
1285         init_waitqueue_head(&pegasus->ctrl_wait);
1286
1287         if (!alloc_urbs(pegasus)) {
1288                 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1289                 goto out1;
1290         }
1291
1292         tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1293
1294         INIT_WORK(&pegasus->carrier_check, check_carrier, pegasus);
1295
1296         pegasus->intf = intf;
1297         pegasus->usb = dev;
1298         pegasus->net = net;
1299         SET_MODULE_OWNER(net);
1300         net->open = pegasus_open;
1301         net->stop = pegasus_close;
1302         net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1303         net->tx_timeout = pegasus_tx_timeout;
1304         net->do_ioctl = pegasus_ioctl;
1305         net->hard_start_xmit = pegasus_start_xmit;
1306         net->set_multicast_list = pegasus_set_multicast;
1307         net->get_stats = pegasus_netdev_stats;
1308         SET_ETHTOOL_OPS(net, &ops);
1309         pegasus->mii.dev = net;
1310         pegasus->mii.mdio_read = mdio_read;
1311         pegasus->mii.mdio_write = mdio_write;
1312         pegasus->mii.phy_id_mask = 0x1f;
1313         pegasus->mii.reg_num_mask = 0x1f;
1314         spin_lock_init(&pegasus->rx_pool_lock);
1315         pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1316                                 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1317
1318         pegasus->features = usb_dev_id[dev_index].private;
1319         get_interrupt_interval(pegasus);
1320         if (reset_mac(pegasus)) {
1321                 dev_err(&intf->dev, "can't reset MAC\n");
1322                 res = -EIO;
1323                 goto out2;
1324         }
1325         set_ethernet_addr(pegasus);
1326         fill_skb_pool(pegasus);
1327         if (pegasus->features & PEGASUS_II) {
1328                 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1329                 setup_pegasus_II(pegasus);
1330         }
1331         pegasus->phy = mii_phy_probe(pegasus);
1332         if (pegasus->phy == 0xff) {
1333                 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1334                 pegasus->phy = 1;
1335         }
1336         pegasus->mii.phy_id = pegasus->phy;
1337         usb_set_intfdata(intf, pegasus);
1338         SET_NETDEV_DEV(net, &intf->dev);
1339         pegasus_reset_wol(net);
1340         res = register_netdev(net);
1341         if (res)
1342                 goto out3;
1343         queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1344                                 CARRIER_CHECK_DELAY);
1345
1346         dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n",
1347                 net->name,
1348                 usb_dev_id[dev_index].name,
1349                 net->dev_addr [0], net->dev_addr [1],
1350                 net->dev_addr [2], net->dev_addr [3],
1351                 net->dev_addr [4], net->dev_addr [5]);
1352         return 0;
1353
1354 out3:
1355         usb_set_intfdata(intf, NULL);
1356         free_skb_pool(pegasus);
1357 out2:
1358         free_all_urbs(pegasus);
1359 out1:
1360         free_netdev(net);
1361 out:
1362         usb_put_dev(dev);
1363         return res;
1364 }
1365
1366 static void pegasus_disconnect(struct usb_interface *intf)
1367 {
1368         struct pegasus *pegasus = usb_get_intfdata(intf);
1369
1370         usb_set_intfdata(intf, NULL);
1371         if (!pegasus) {
1372                 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1373                 return;
1374         }
1375
1376         pegasus->flags |= PEGASUS_UNPLUG;
1377         cancel_delayed_work(&pegasus->carrier_check);
1378         unregister_netdev(pegasus->net);
1379         usb_put_dev(interface_to_usbdev(intf));
1380         unlink_all_urbs(pegasus);
1381         free_all_urbs(pegasus);
1382         free_skb_pool(pegasus);
1383         if (pegasus->rx_skb)
1384                 dev_kfree_skb(pegasus->rx_skb);
1385         free_netdev(pegasus->net);
1386 }
1387
1388 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1389 {
1390         struct pegasus *pegasus = usb_get_intfdata(intf);
1391
1392         netif_device_detach (pegasus->net);
1393         cancel_delayed_work(&pegasus->carrier_check);
1394         if (netif_running(pegasus->net)) {
1395                 usb_kill_urb(pegasus->rx_urb);
1396                 usb_kill_urb(pegasus->intr_urb);
1397         }
1398         return 0;
1399 }
1400
1401 static int pegasus_resume (struct usb_interface *intf)
1402 {
1403         struct pegasus *pegasus = usb_get_intfdata(intf);
1404
1405         netif_device_attach (pegasus->net);
1406         if (netif_running(pegasus->net)) {
1407                 pegasus->rx_urb->status = 0;
1408                 pegasus->rx_urb->actual_length = 0;
1409                 read_bulk_callback(pegasus->rx_urb, NULL);
1410
1411                 pegasus->intr_urb->status = 0;
1412                 pegasus->intr_urb->actual_length = 0;
1413                 intr_callback(pegasus->intr_urb, NULL);
1414         }
1415         queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1416                                 CARRIER_CHECK_DELAY);
1417         return 0;
1418 }
1419
1420 static struct usb_driver pegasus_driver = {
1421         .name = driver_name,
1422         .probe = pegasus_probe,
1423         .disconnect = pegasus_disconnect,
1424         .id_table = pegasus_ids,
1425         .suspend = pegasus_suspend,
1426         .resume = pegasus_resume,
1427 };
1428
1429 static void parse_id(char *id)
1430 {
1431         unsigned int vendor_id=0, device_id=0, flags=0, i=0;
1432         char *token, *name=NULL;
1433
1434         if ((token = strsep(&id, ":")) != NULL)
1435                 name = token;
1436         /* name now points to a null terminated string*/
1437         if ((token = strsep(&id, ":")) != NULL)
1438                 vendor_id = simple_strtoul(token, NULL, 16);
1439         if ((token = strsep(&id, ":")) != NULL)
1440                 device_id = simple_strtoul(token, NULL, 16);
1441         flags = simple_strtoul(id, NULL, 16);
1442         pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1443                 driver_name, name, vendor_id, device_id, flags);
1444
1445         if (vendor_id > 0x10000 || vendor_id == 0)
1446                 return;
1447         if (device_id > 0x10000 || device_id == 0)
1448                 return;
1449
1450         for (i=0; usb_dev_id[i].name; i++);
1451         usb_dev_id[i].name = name;
1452         usb_dev_id[i].vendor = vendor_id;
1453         usb_dev_id[i].device = device_id;
1454         usb_dev_id[i].private = flags;
1455         pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1456         pegasus_ids[i].idVendor = vendor_id;
1457         pegasus_ids[i].idProduct = device_id;
1458 }
1459
1460 static int __init pegasus_init(void)
1461 {
1462         pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1463         if (devid)
1464                 parse_id(devid);
1465         pegasus_workqueue = create_singlethread_workqueue("pegasus");
1466         if (!pegasus_workqueue)
1467                 return -ENOMEM;
1468         return usb_register(&pegasus_driver);
1469 }
1470
1471 static void __exit pegasus_exit(void)
1472 {
1473         destroy_workqueue(pegasus_workqueue);
1474         usb_deregister(&pegasus_driver);
1475 }
1476
1477 module_init(pegasus_init);
1478 module_exit(pegasus_exit);