drivers/usb/net/rtl8150.c

   1 /*
   2  *  Copyright (c) 2002 Petko Manolov (petkan@users.sourceforge.net)
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * version 2 as published by the Free Software Foundation.
   7  */
   8
   9 #include <linux/config.h>
  10 #include <linux/sched.h>
  11 #include <linux/init.h>
  12 #include <linux/signal.h>
  13 #include <linux/slab.h>
  14 #include <linux/module.h>
  15 #include <linux/netdevice.h>
  16 #include <linux/etherdevice.h>
  17 #include <linux/mii.h>
  18 #include <linux/ethtool.h>
  19 #include <linux/usb.h>
  20 #include <asm/uaccess.h>
  21
  22 /* Version Information */
  23 #define DRIVER_VERSION "v0.5.7 (2002/12/31)"
  24 #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
  25 #define DRIVER_DESC "rtl8150 based usb-ethernet driver"
  26
  27 #define IDR                     0x0120
  28 #define MAR                     0x0126
  29 #define CR                      0x012e
  30 #define TCR                     0x012f
  31 #define RCR                     0x0130
  32 #define TSR                     0x0132
  33 #define RSR                     0x0133
  34 #define CON0                    0x0135
  35 #define CON1                    0x0136
  36 #define MSR                     0x0137
  37 #define PHYADD                  0x0138
  38 #define PHYDAT                  0x0139
  39 #define PHYCNT                  0x013b
  40 #define GPPC                    0x013d
  41 #define BMCR                    0x0140
  42 #define BMSR                    0x0142
  43 #define ANAR                    0x0144
  44 #define ANLP                    0x0146
  45 #define AER                     0x0148
  46
  47 #define IDR_EEPROM              0x1202
  48
  49 #define PHY_READ                0
  50 #define PHY_WRITE               0x20
  51 #define PHY_GO                  0x40
  52
  53 #define MII_TIMEOUT             10
  54
  55 #define RTL8150_REQT_READ       0xc0
  56 #define RTL8150_REQT_WRITE      0x40
  57 #define RTL8150_REQ_GET_REGS    0x05
  58 #define RTL8150_REQ_SET_REGS    0x05
  59
  60 #define RTL8150_MTU             1540
  61 #define RTL8150_TX_TIMEOUT      (HZ)
  62 #define RX_SKB_POOL_SIZE        4
  63
  64 /* rtl8150 flags */
  65 #define RTL8150_HW_CRC          0
  66 #define RX_REG_SET              1
  67 #define RTL8150_UNPLUG          2
  68 #define RX_URB_FAIL             3
  69
  70 /* Define these values to match your device */
  71 #define VENDOR_ID_REALTEK               0x0bda
  72 #define VENDOR_ID_MELCO                 0x0411
  73
  74 #define PRODUCT_ID_RTL8150              0x8150
  75 #define PRODUCT_ID_LUAKTX               0x0012
  76
  77 #undef  EEPROM_WRITE
  78
  79 /* table of devices that work with this driver */
  80 static struct usb_device_id rtl8150_table[] = {
  81         {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)},
  82         {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)},
  83         {}
  84 };
  85
  86 MODULE_DEVICE_TABLE(usb, rtl8150_table);
  87
  88 struct rtl8150 {
  89         unsigned long flags;
  90         struct usb_device *udev;
  91         struct tasklet_struct tl;
  92         struct net_device_stats stats;
  93         struct net_device *netdev;
  94         struct urb *rx_urb, *tx_urb, *intr_urb, *ctrl_urb;
  95         struct sk_buff *tx_skb, *rx_skb;
  96         struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE];
  97         spinlock_t rx_pool_lock;
  98         struct usb_ctrlrequest dr;
  99         int intr_interval;
 100         u16 rx_creg;
 101         u8 intr_buff[8];
 102         u8 phy;
 103 };
 104
 105 typedef struct rtl8150 rtl8150_t;
 106
 107 unsigned long multicast_filter_limit = 32;
 108
 109 static void fill_skb_pool(rtl8150_t *);
 110 static void free_skb_pool(rtl8150_t *);
 111 static inline struct sk_buff *pull_skb(rtl8150_t *);
 112 static void rtl8150_disconnect(struct usb_interface *intf);
 113 static int rtl8150_probe(struct usb_interface *intf,
 114                            const struct usb_device_id *id);
 115
 116 static const char driver_name [] = "rtl8150";
 117
 118 static struct usb_driver rtl8150_driver = {
 119         .owner =        THIS_MODULE,
 120         .name =         driver_name,
 121         .probe =        rtl8150_probe,
 122         .disconnect =   rtl8150_disconnect,
 123         .id_table =     rtl8150_table,
 124 };
 125
 126 /*
 127 **
 128 **      device related part of the code
 129 **
 130 */
 131 static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
 132 {
 133         return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
 134                                RTL8150_REQ_GET_REGS, RTL8150_REQT_READ,
 135                                indx, 0, data, size, HZ / 2);
 136 }
 137
 138 static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
 139 {
 140         return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
 141                                RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE,
 142                                indx, 0, data, size, HZ / 2);
 143 }
 144
 145 static void ctrl_callback(struct urb *urb, struct pt_regs *regs)
 146 {
 147         rtl8150_t *dev;
 148
 149         switch (urb->status) {
 150         case 0:
 151                 break;
 152         case -EINPROGRESS:
 153                 break;
 154         case -ENOENT:
 155                 break;
 156         default:
 157                 warn("ctrl urb status %d", urb->status);
 158         }
 159         dev = urb->context;
 160         clear_bit(RX_REG_SET, &dev->flags);
 161 }
 162
 163 static int async_set_registers(rtl8150_t * dev, u16 indx, u16 size)
 164 {
 165         int ret;
 166
 167         if (test_bit(RX_REG_SET, &dev->flags))
 168                 return -EAGAIN;
 169
 170         dev->dr.bRequestType = RTL8150_REQT_WRITE;
 171         dev->dr.bRequest = RTL8150_REQ_SET_REGS;
 172         dev->dr.wValue = cpu_to_le16(indx);
 173         dev->dr.wIndex = 0;
 174         dev->dr.wLength = cpu_to_le16(size);
 175         dev->ctrl_urb->transfer_buffer_length = size;
 176         usb_fill_control_urb(dev->ctrl_urb, dev->udev,
 177                          usb_sndctrlpipe(dev->udev, 0), (char *) &dev->dr,
 178                          &dev->rx_creg, size, ctrl_callback, dev);
 179         if ((ret = usb_submit_urb(dev->ctrl_urb, GFP_ATOMIC)))
 180                 err("control request submission failed: %d", ret);
 181         else
 182                 set_bit(RX_REG_SET, &dev->flags);
 183
 184         return ret;
 185 }
 186
 187 static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg)
 188 {
 189         int i;
 190         u8 data[3], tmp;
 191
 192         data[0] = phy;
 193         data[1] = data[2] = 0;
 194         tmp = indx | PHY_READ | PHY_GO;
 195         i = 0;
 196
 197         set_registers(dev, PHYADD, sizeof(data), data);
 198         set_registers(dev, PHYCNT, 1, &tmp);
 199         do {
 200                 get_registers(dev, PHYCNT, 1, data);
 201         } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
 202
 203         if (i < MII_TIMEOUT) {
 204                 get_registers(dev, PHYDAT, 2, data);
 205                 *reg = le16_to_cpup(data);
 206                 return 0;
 207         } else
 208                 return 1;
 209 }
 210
 211 static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg)
 212 {
 213         int i;
 214         u8 data[3], tmp;
 215
 216         data[0] = phy;
 217         *(data + 1) = cpu_to_le16p(&reg);
 218         tmp = indx | PHY_WRITE | PHY_GO;
 219         i = 0;
 220
 221         set_registers(dev, PHYADD, sizeof(data), data);
 222         set_registers(dev, PHYCNT, 1, &tmp);
 223         do {
 224                 get_registers(dev, PHYCNT, 1, data);
 225         } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
 226
 227         if (i < MII_TIMEOUT)
 228                 return 0;
 229         else
 230                 return 1;
 231 }
 232
 233 static inline void set_ethernet_addr(rtl8150_t * dev)
 234 {
 235         u8 node_id[6];
 236
 237         get_registers(dev, IDR, sizeof(node_id), node_id);
 238         memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id));
 239 }
 240
 241 static int rtl8150_set_mac_address(struct net_device *netdev, void *p)
 242 {
 243         struct sockaddr *addr = p;
 244         rtl8150_t *dev;
 245         int i;
 246
 247         if (netif_running(netdev))
 248                 return -EBUSY;
 249         dev = netdev->priv;
 250         if (dev == NULL) {
 251                 return -ENODEV;
 252         }
 253         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 254         dbg("%s: Setting MAC address to ", netdev->name);
 255         for (i = 0; i < 5; i++)
 256                 dbg("%02X:", netdev->dev_addr[i]);
 257         dbg("%02X\n", netdev->dev_addr[i]);
 258         /* Set the IDR registers. */
 259         set_registers(dev, IDR, sizeof(netdev->dev_addr), netdev->dev_addr);
 260 #ifdef EEPROM_WRITE
 261         {
 262         u8 cr;
 263         /* Get the CR contents. */
 264         get_registers(dev, CR, 1, &cr);
 265         /* Set the WEPROM bit (eeprom write enable). */
 266         cr |= 0x20;
 267         set_registers(dev, CR, 1, &cr);
 268         /* Write the MAC address into eeprom. Eeprom writes must be word-sized,
 269            so we need to split them up. */
 270         for (i = 0; i * 2 < netdev->addr_len; i++) {
 271                 set_registers(dev, IDR_EEPROM + (i * 2), 2,
 272                 netdev->dev_addr + (i * 2));
 273         }
 274         /* Clear the WEPROM bit (preventing accidental eeprom writes). */
 275         cr &= 0xdf;
 276         set_registers(dev, CR, 1, &cr);
 277         }
 278 #endif
 279         return 0;
 280 }
 281
 282 static int rtl8150_reset(rtl8150_t * dev)
 283 {
 284         u8 data = 0x10;
 285         int i = HZ;
 286
 287         set_registers(dev, CR, 1, &data);
 288         do {
 289                 get_registers(dev, CR, 1, &data);
 290         } while ((data & 0x10) && --i);
 291
 292         return (i > 0) ? 1 : 0;
 293 }
 294
 295 static int alloc_all_urbs(rtl8150_t * dev)
 296 {
 297         dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
 298         if (!dev->rx_urb)
 299                 return 0;
 300         dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
 301         if (!dev->tx_urb) {
 302                 usb_free_urb(dev->rx_urb);
 303                 return 0;
 304         }
 305         dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
 306         if (!dev->intr_urb) {
 307                 usb_free_urb(dev->rx_urb);
 308                 usb_free_urb(dev->tx_urb);
 309                 return 0;
 310         }
 311         dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
 312         if (!dev->intr_urb) {
 313                 usb_free_urb(dev->rx_urb);
 314                 usb_free_urb(dev->tx_urb);
 315                 usb_free_urb(dev->intr_urb);
 316                 return 0;
 317         }
 318
 319         return 1;
 320 }
 321
 322 static void free_all_urbs(rtl8150_t * dev)
 323 {
 324         usb_free_urb(dev->rx_urb);
 325         usb_free_urb(dev->tx_urb);
 326         usb_free_urb(dev->intr_urb);
 327         usb_free_urb(dev->ctrl_urb);
 328 }
 329
 330 static void unlink_all_urbs(rtl8150_t * dev)
 331 {
 332         usb_unlink_urb(dev->rx_urb);
 333         usb_unlink_urb(dev->tx_urb);
 334         usb_unlink_urb(dev->intr_urb);
 335         usb_unlink_urb(dev->ctrl_urb);
 336 }
 337
 338 static void read_bulk_callback(struct urb *urb, struct pt_regs *regs)
 339 {
 340         rtl8150_t *dev;
 341         unsigned pkt_len, res;
 342         struct sk_buff *skb;
 343         struct net_device *netdev;
 344         u16 rx_stat;
 345
 346         dev = urb->context;
 347         if (!dev)
 348                 return;
 349         if (test_bit(RTL8150_UNPLUG, &dev->flags))
 350                 return;
 351         netdev = dev->netdev;
 352         if (!netif_device_present(netdev))
 353                 return;
 354
 355         switch (urb->status) {
 356         case 0:
 357                 break;
 358         case -ENOENT:
 359                 return; /* the urb is in unlink state */
 360         case -ETIMEDOUT:
 361                 warn("may be reset is needed?..");
 362                 goto goon;
 363         default:
 364                 warn("Rx status %d", urb->status);
 365                 goto goon;
 366         }
 367
 368         if (!dev->rx_skb)
 369                 goto resched;
 370
 371         res = urb->actual_length;
 372         rx_stat = le16_to_cpu(*(short *)(urb->transfer_buffer + res - 4));
 373         pkt_len = res - 4;
 374
 375         skb_put(dev->rx_skb, pkt_len);
 376         dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev);
 377         netif_rx(dev->rx_skb);
 378         dev->stats.rx_packets++;
 379         dev->stats.rx_bytes += pkt_len;
 380
 381         spin_lock(&dev->rx_pool_lock);
 382         skb = pull_skb(dev);
 383         spin_unlock(&dev->rx_pool_lock);
 384         if (!skb)
 385                 goto resched;
 386
 387         dev->rx_skb = skb;
 388 goon:
 389         usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
 390                       dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
 391         if (usb_submit_urb(dev->rx_urb, GFP_ATOMIC)) {
 392                 set_bit(RX_URB_FAIL, &dev->flags);
 393                 goto resched;
 394         } else {
 395                 clear_bit(RX_URB_FAIL, &dev->flags);
 396         }
 397
 398         return;
 399 resched:
 400         tasklet_schedule(&dev->tl);
 401 }
 402
 403 static void rx_fixup(unsigned long data)
 404 {
 405         rtl8150_t *dev;
 406         struct sk_buff *skb;
 407
 408         dev = (rtl8150_t *)data;
 409
 410         spin_lock_irq(&dev->rx_pool_lock);
 411         fill_skb_pool(dev);
 412         spin_unlock_irq(&dev->rx_pool_lock);
 413         if (test_bit(RX_URB_FAIL, &dev->flags))
 414                 if (dev->rx_skb)
 415                         goto try_again;
 416         spin_lock_irq(&dev->rx_pool_lock);
 417         skb = pull_skb(dev);
 418         spin_unlock_irq(&dev->rx_pool_lock);
 419         if (skb == NULL)
 420                 goto tlsched;
 421         dev->rx_skb = skb;
 422         usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
 423                       dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
 424 try_again:
 425         if (usb_submit_urb(dev->rx_urb, GFP_ATOMIC)) {
 426                 set_bit(RX_URB_FAIL, &dev->flags);
 427                 goto tlsched;
 428          } else {
 429                 clear_bit(RX_URB_FAIL, &dev->flags);
 430         }
 431
 432         return;
 433 tlsched:
 434         tasklet_schedule(&dev->tl);
 435 }
 436
 437 static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
 438 {
 439         rtl8150_t *dev;
 440
 441         dev = urb->context;
 442         if (!dev)
 443                 return;
 444         dev_kfree_skb_irq(dev->tx_skb);
 445         if (!netif_device_present(dev->netdev))
 446                 return;
 447         if (urb->status)
 448                 info("%s: Tx status %d", dev->netdev->name, urb->status);
 449         dev->netdev->trans_start = jiffies;
 450         netif_wake_queue(dev->netdev);
 451 }
 452
 453 void intr_callback(struct urb *urb, struct pt_regs *regs)
 454 {
 455         rtl8150_t *dev;
 456         int status;
 457
 458         dev = urb->context;
 459         if (!dev)
 460                 return;
 461         switch (urb->status) {
 462         case 0:                 /* success */
 463                 break;
 464         case -ECONNRESET:       /* unlink */
 465         case -ENOENT:
 466         case -ESHUTDOWN:
 467                 return;
 468         /* -EPIPE:  should clear the halt */
 469         default:
 470                 info("%s: intr status %d", dev->netdev->name, urb->status);
 471                 goto resubmit;
 472         }
 473
 474         /* FIXME if this doesn't do anything, don't submit the urb! */
 475
 476 resubmit:
 477         status = usb_submit_urb (urb, SLAB_ATOMIC);
 478         if (status)
 479                 err ("can't resubmit intr, %s-%s/input0, status %d",
 480                                 dev->udev->bus->bus_name,
 481                                 dev->udev->devpath, status);
 482 }
 483
 484 /*
 485 **
 486 **      network related part of the code
 487 **
 488 */
 489
 490 static void fill_skb_pool(rtl8150_t *dev)
 491 {
 492         struct sk_buff *skb;
 493         int i;
 494
 495         for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
 496                 if (dev->rx_skb_pool[i])
 497                         continue;
 498                 skb = dev_alloc_skb(RTL8150_MTU + 2);
 499                 if (!skb) {
 500                         return;
 501                 }
 502                 skb->dev = dev->netdev;
 503                 skb_reserve(skb, 2);
 504                 dev->rx_skb_pool[i] = skb;
 505         }
 506 }
 507
 508 static void free_skb_pool(rtl8150_t *dev)
 509 {
 510         int i;
 511
 512         for (i = 0; i < RX_SKB_POOL_SIZE; i++)
 513                 if (dev->rx_skb_pool[i])
 514                         dev_kfree_skb(dev->rx_skb_pool[i]);
 515 }
 516
 517 static inline struct sk_buff *pull_skb(rtl8150_t *dev)
 518 {
 519         struct sk_buff *skb;
 520         int i;
 521
 522         for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
 523                 if (dev->rx_skb_pool[i]) {
 524                         skb = dev->rx_skb_pool[i];
 525                         dev->rx_skb_pool[i] = NULL;
 526                         return skb;
 527                 }
 528         }
 529         return NULL;
 530 }
 531
 532 static int enable_net_traffic(rtl8150_t * dev)
 533 {
 534         u8 cr, tcr, rcr, msr;
 535
 536         if (!rtl8150_reset(dev)) {
 537                 warn("%s - device reset failed", __FUNCTION__);
 538         }
 539         /* RCR bit7=1 attach Rx info at the end;  =0 HW CRC (which is broken) */
 540         rcr = 0x9e;     /* bit7=1 attach Rx info at the end */
 541         dev->rx_creg = cpu_to_le16(rcr);
 542         tcr = 0xd8;
 543         cr = 0x0c;
 544         if (!(rcr & 0x80))
 545                 set_bit(RTL8150_HW_CRC, &dev->flags);
 546         set_registers(dev, RCR, 1, &rcr);
 547         set_registers(dev, TCR, 1, &tcr);
 548         set_registers(dev, CR, 1, &cr);
 549         get_registers(dev, MSR, 1, &msr);
 550
 551         return 0;
 552 }
 553
 554 static void disable_net_traffic(rtl8150_t * dev)
 555 {
 556         u8 cr;
 557
 558         get_registers(dev, CR, 1, &cr);
 559         cr &= 0xf3;
 560         set_registers(dev, CR, 1, &cr);
 561 }
 562
 563 static struct net_device_stats *rtl8150_netdev_stats(struct net_device *dev)
 564 {
 565         return &((rtl8150_t *) dev->priv)->stats;
 566 }
 567
 568 static void rtl8150_tx_timeout(struct net_device *netdev)
 569 {
 570         rtl8150_t *dev;
 571
 572         dev = netdev->priv;
 573         if (!dev)
 574                 return;
 575         warn("%s: Tx timeout.", netdev->name);
 576         dev->tx_urb->transfer_flags |= URB_ASYNC_UNLINK;
 577         usb_unlink_urb(dev->tx_urb);
 578         dev->stats.tx_errors++;
 579 }
 580
 581 static void rtl8150_set_multicast(struct net_device *netdev)
 582 {
 583         rtl8150_t *dev;
 584
 585         dev = netdev->priv;
 586         netif_stop_queue(netdev);
 587         if (netdev->flags & IFF_PROMISC) {
 588                 dev->rx_creg |= cpu_to_le16(0x0001);
 589                 info("%s: promiscuous mode", netdev->name);
 590         } else if ((netdev->mc_count > multicast_filter_limit) ||
 591                    (netdev->flags & IFF_ALLMULTI)) {
 592                 dev->rx_creg &= cpu_to_le16(0xfffe);
 593                 dev->rx_creg |= cpu_to_le16(0x0002);
 594                 info("%s: allmulti set", netdev->name);
 595         } else {
 596                 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */
 597                 dev->rx_creg &= cpu_to_le16(0x00fc);
 598         }
 599         async_set_registers(dev, RCR, 2);
 600         netif_wake_queue(netdev);
 601 }
 602
 603 static int rtl8150_start_xmit(struct sk_buff *skb, struct net_device *netdev)
 604 {
 605         rtl8150_t *dev;
 606         int count, res;
 607
 608         netif_stop_queue(netdev);
 609         dev = netdev->priv;
 610         count = (skb->len < 60) ? 60 : skb->len;
 611         count = (count & 0x3f) ? count : count + 1;
 612         dev->tx_skb = skb;
 613         usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2),
 614                       skb->data, count, write_bulk_callback, dev);
 615         if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) {
 616                 warn("failed tx_urb %d\n", res);
 617                 dev->stats.tx_errors++;
 618                 netif_start_queue(netdev);
 619         } else {
 620                 dev->stats.tx_packets++;
 621                 dev->stats.tx_bytes += skb->len;
 622                 netdev->trans_start = jiffies;
 623         }
 624
 625         return 0;
 626 }
 627
 628 static int rtl8150_open(struct net_device *netdev)
 629 {
 630         rtl8150_t *dev;
 631         int res;
 632
 633         dev = netdev->priv;
 634         if (dev == NULL) {
 635                 return -ENODEV;
 636         }
 637         if (dev->rx_skb == NULL)
 638                 dev->rx_skb = pull_skb(dev);
 639         if (!dev->rx_skb)
 640                 return -ENOMEM;
 641
 642         set_registers(dev, IDR, 6, netdev->dev_addr);
 643
 644         usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
 645                       dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
 646         if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL)))
 647                 warn("%s: rx_urb submit failed: %d", __FUNCTION__, res);
 648         usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3),
 649                      dev->intr_buff, sizeof(dev->intr_buff), intr_callback,
 650                      dev, dev->intr_interval);
 651         if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL)))
 652                 warn("%s: intr_urb submit failed: %d", __FUNCTION__, res);
 653         netif_start_queue(netdev);
 654         enable_net_traffic(dev);
 655
 656         return res;
 657 }
 658
 659 static int rtl8150_close(struct net_device *netdev)
 660 {
 661         rtl8150_t *dev;
 662         int res = 0;
 663
 664         dev = netdev->priv;
 665         if (!dev)
 666                 return -ENODEV;
 667
 668         netif_stop_queue(netdev);
 669         if (!test_bit(RTL8150_UNPLUG, &dev->flags))
 670                 disable_net_traffic(dev);
 671         unlink_all_urbs(dev);
 672
 673         return res;
 674 }
 675
 676 static int rtl8150_ethtool_ioctl(struct net_device *netdev, void __user *uaddr)
 677 {
 678         rtl8150_t *dev;
 679         int cmd;
 680
 681         dev = netdev->priv;
 682         if (get_user(cmd, (int *) uaddr))
 683                 return -EFAULT;
 684
 685         switch (cmd) {
 686         case ETHTOOL_GDRVINFO:{
 687                 struct ethtool_drvinfo info = { ETHTOOL_GDRVINFO };
 688
 689                 strncpy(info.driver, driver_name, ETHTOOL_BUSINFO_LEN);
 690                 strncpy(info.version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
 691                 usb_make_path(dev->udev, info.bus_info, sizeof info.bus_info);
 692                 if (copy_to_user(uaddr, &info, sizeof(info)))
 693                         return -EFAULT;
 694                 return 0;
 695                 }
 696         case ETHTOOL_GSET:{
 697                 struct ethtool_cmd ecmd;
 698                 short lpa, bmcr;
 699
 700                 if (copy_from_user(&ecmd, uaddr, sizeof(ecmd)))
 701                         return -EFAULT;
 702                 ecmd.supported = (SUPPORTED_10baseT_Half |
 703                                   SUPPORTED_10baseT_Full |
 704                                   SUPPORTED_100baseT_Half |
 705                                   SUPPORTED_100baseT_Full |
 706                                   SUPPORTED_Autoneg |
 707                                   SUPPORTED_TP | SUPPORTED_MII);
 708                 ecmd.port = PORT_TP;
 709                 ecmd.transceiver = XCVR_INTERNAL;
 710                 ecmd.phy_address = dev->phy;
 711                 get_registers(dev, BMCR, 2, &bmcr);
 712                 get_registers(dev, ANLP, 2, &lpa);
 713                 if (bmcr & BMCR_ANENABLE) {
 714                         ecmd.autoneg = AUTONEG_ENABLE;
 715                         ecmd.speed = (lpa & (LPA_100HALF | LPA_100FULL)) ?
 716                                      SPEED_100 : SPEED_10;
 717                         if (ecmd.speed == SPEED_100)
 718                                 ecmd.duplex = (lpa & LPA_100FULL) ?
 719                                     DUPLEX_FULL : DUPLEX_HALF;
 720                         else
 721                                 ecmd.duplex = (lpa & LPA_10FULL) ?
 722                                     DUPLEX_FULL : DUPLEX_HALF;
 723                 } else {
 724                         ecmd.autoneg = AUTONEG_DISABLE;
 725                         ecmd.speed = (bmcr & BMCR_SPEED100) ?
 726                             SPEED_100 : SPEED_10;
 727                         ecmd.duplex = (bmcr & BMCR_FULLDPLX) ?
 728                             DUPLEX_FULL : DUPLEX_HALF;
 729                 }
 730                 if (copy_to_user(uaddr, &ecmd, sizeof(ecmd)))
 731                         return -EFAULT;
 732                 return 0;
 733                 }
 734         case ETHTOOL_SSET:
 735                 return -ENOTSUPP;
 736         case ETHTOOL_GLINK:{
 737                 struct ethtool_value edata = { ETHTOOL_GLINK };
 738
 739                 edata.data = netif_carrier_ok(netdev);
 740                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 741                         return -EFAULT;
 742                 return 0;
 743                 }
 744         default:
 745                 return -EOPNOTSUPP;
 746         }
 747 }
 748
 749 static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
 750 {
 751         rtl8150_t *dev;
 752         u16 *data;
 753         int res;
 754
 755         dev = netdev->priv;
 756         data = (u16 *) & rq->ifr_data;
 757         res = 0;
 758
 759         switch (cmd) {
 760         case SIOCETHTOOL:
 761                 res = rtl8150_ethtool_ioctl(netdev, (void __user *)rq->ifr_data);
 762                 break;
 763         case SIOCDEVPRIVATE:
 764                 data[0] = dev->phy;
 765         case SIOCDEVPRIVATE + 1:
 766                 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]);
 767                 break;
 768         case SIOCDEVPRIVATE + 2:
 769                 if (!capable(CAP_NET_ADMIN))
 770                         return -EPERM;
 771                 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]);
 772                 break;
 773         default:
 774                 res = -EOPNOTSUPP;
 775         }
 776         return res;
 777 }
 778
 779 static int rtl8150_probe(struct usb_interface *intf,
 780                          const struct usb_device_id *id)
 781 {
 782         struct usb_device *udev = interface_to_usbdev(intf);
 783         rtl8150_t *dev;
 784         struct net_device *netdev;
 785
 786         dev = kmalloc(sizeof(rtl8150_t), GFP_KERNEL);
 787         if (!dev) {
 788                 err("Out of memory");
 789                 return -ENOMEM;
 790         } else
 791                 memset(dev, 0, sizeof(rtl8150_t));
 792
 793         netdev = alloc_etherdev(0);
 794         if (!netdev) {
 795                 kfree(dev);
 796                 err("Oh boy, out of memory again?!?");
 797                 return -ENOMEM;
 798         }
 799
 800         tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev);
 801         spin_lock_init(&dev->rx_pool_lock);
 802
 803         dev->udev = udev;
 804         dev->netdev = netdev;
 805         SET_MODULE_OWNER(netdev);
 806         netdev->priv = dev;
 807         netdev->open = rtl8150_open;
 808         netdev->stop = rtl8150_close;
 809         netdev->do_ioctl = rtl8150_ioctl;
 810         netdev->watchdog_timeo = RTL8150_TX_TIMEOUT;
 811         netdev->tx_timeout = rtl8150_tx_timeout;
 812         netdev->hard_start_xmit = rtl8150_start_xmit;
 813         netdev->set_multicast_list = rtl8150_set_multicast;
 814         netdev->set_mac_address = rtl8150_set_mac_address;
 815         netdev->get_stats = rtl8150_netdev_stats;
 816         netdev->mtu = RTL8150_MTU;
 817         dev->intr_interval = 100;       /* 100ms */
 818
 819         if (!alloc_all_urbs(dev)) {
 820                 err("out of memory");
 821                 goto out;
 822         }
 823         if (!rtl8150_reset(dev)) {
 824                 err("couldn't reset the device");
 825                 goto out1;
 826         }
 827         fill_skb_pool(dev);
 828         set_ethernet_addr(dev);
 829         info("%s: rtl8150 is detected", netdev->name);
 830
 831         usb_set_intfdata(intf, dev);
 832
 833         SET_NETDEV_DEV(netdev, &intf->dev);
 834         if (register_netdev(netdev) != 0) {
 835                 err("couldn't register the device");
 836                 goto out2;
 837         }
 838         return 0;
 839
 840 out2:
 841         usb_set_intfdata(intf, NULL);
 842         free_skb_pool(dev);
 843 out1:
 844         free_all_urbs(dev);
 845 out:
 846         kfree(netdev);
 847         kfree(dev);
 848         return -EIO;
 849 }
 850
 851 static void rtl8150_disconnect(struct usb_interface *intf)
 852 {
 853         rtl8150_t *dev = usb_get_intfdata(intf);
 854
 855         usb_set_intfdata(intf, NULL);
 856         if (dev) {
 857                 set_bit(RTL8150_UNPLUG, &dev->flags);
 858                 unregister_netdev(dev->netdev);
 859                 unlink_all_urbs(dev);
 860                 free_all_urbs(dev);
 861                 free_skb_pool(dev);
 862                 if (dev->rx_skb)
 863                         dev_kfree_skb(dev->rx_skb);
 864                 kfree(dev->netdev);
 865                 kfree(dev);
 866         }
 867 }
 868
 869 int __init usb_rtl8150_init(void)
 870 {
 871         info(DRIVER_DESC " " DRIVER_VERSION);
 872         return usb_register(&rtl8150_driver);
 873 }
 874
 875 void __exit usb_rtl8150_exit(void)
 876 {
 877         usb_deregister(&rtl8150_driver);
 878 }
 879
 880 module_init(usb_rtl8150_init);
 881 module_exit(usb_rtl8150_exit);
 882
 883 MODULE_AUTHOR(DRIVER_AUTHOR);
 884 MODULE_DESCRIPTION(DRIVER_DESC);
 885 MODULE_LICENSE("GPL");