drivers/net/wireless/rtl818x/rtl8187_dev.c

   1 /*
   2  * Linux device driver for RTL8187
   3  *
   4  * Copyright 2007 Michael Wu <flamingice@sourmilk.net>
   5  * Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
   6  *
   7  * Based on the r8187 driver, which is:
   8  * Copyright 2005 Andrea Merello <andreamrl@tiscali.it>, et al.
   9  *
  10  * The driver was extended to the RTL8187B in 2008 by:
  11  *      Herton Ronaldo Krzesinski <herton@mandriva.com.br>
  12  *      Hin-Tak Leung <htl10@users.sourceforge.net>
  13  *      Larry Finger <Larry.Finger@lwfinger.net>
  14  *
  15  * Magic delays and register offsets below are taken from the original
  16  * r8187 driver sources.  Thanks to Realtek for their support!
  17  *
  18  * This program is free software; you can redistribute it and/or modify
  19  * it under the terms of the GNU General Public License version 2 as
  20  * published by the Free Software Foundation.
  21  */
  22
  23 #include <linux/init.h>
  24 #include <linux/usb.h>
  25 #include <linux/delay.h>
  26 #include <linux/etherdevice.h>
  27 #include <linux/eeprom_93cx6.h>
  28 #include <net/mac80211.h>
  29
  30 #include "rtl8187.h"
  31 #include "rtl8187_rtl8225.h"
  32
  33 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  34 MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>");
  35 MODULE_AUTHOR("Herton Ronaldo Krzesinski <herton@mandriva.com.br>");
  36 MODULE_AUTHOR("Hin-Tak Leung <htl10@users.sourceforge.net>");
  37 MODULE_AUTHOR("Larry Finger <Larry.Finger@lwfinger.net>");
  38 MODULE_DESCRIPTION("RTL8187/RTL8187B USB wireless driver");
  39 MODULE_LICENSE("GPL");
  40
  41 static struct usb_device_id rtl8187_table[] __devinitdata = {
  42         /* Asus */
  43         {USB_DEVICE(0x0b05, 0x171d), .driver_info = DEVICE_RTL8187},
  44         /* Belkin */
  45         {USB_DEVICE(0x050d, 0x705e), .driver_info = DEVICE_RTL8187B},
  46         /* Realtek */
  47         {USB_DEVICE(0x0bda, 0x8187), .driver_info = DEVICE_RTL8187},
  48         {USB_DEVICE(0x0bda, 0x8189), .driver_info = DEVICE_RTL8187B},
  49         {USB_DEVICE(0x0bda, 0x8197), .driver_info = DEVICE_RTL8187B},
  50         {USB_DEVICE(0x0bda, 0x8198), .driver_info = DEVICE_RTL8187B},
  51         /* Netgear */
  52         {USB_DEVICE(0x0846, 0x6100), .driver_info = DEVICE_RTL8187},
  53         {USB_DEVICE(0x0846, 0x6a00), .driver_info = DEVICE_RTL8187},
  54         {USB_DEVICE(0x0846, 0x4260), .driver_info = DEVICE_RTL8187B},
  55         /* HP */
  56         {USB_DEVICE(0x03f0, 0xca02), .driver_info = DEVICE_RTL8187},
  57         /* Sitecom */
  58         {USB_DEVICE(0x0df6, 0x000d), .driver_info = DEVICE_RTL8187},
  59         {USB_DEVICE(0x0df6, 0x0028), .driver_info = DEVICE_RTL8187B},
  60         /* Abocom */
  61         {USB_DEVICE(0x13d1, 0xabe6), .driver_info = DEVICE_RTL8187},
  62         {}
  63 };
  64
  65 MODULE_DEVICE_TABLE(usb, rtl8187_table);
  66
  67 static const struct ieee80211_rate rtl818x_rates[] = {
  68         { .bitrate = 10, .hw_value = 0, },
  69         { .bitrate = 20, .hw_value = 1, },
  70         { .bitrate = 55, .hw_value = 2, },
  71         { .bitrate = 110, .hw_value = 3, },
  72         { .bitrate = 60, .hw_value = 4, },
  73         { .bitrate = 90, .hw_value = 5, },
  74         { .bitrate = 120, .hw_value = 6, },
  75         { .bitrate = 180, .hw_value = 7, },
  76         { .bitrate = 240, .hw_value = 8, },
  77         { .bitrate = 360, .hw_value = 9, },
  78         { .bitrate = 480, .hw_value = 10, },
  79         { .bitrate = 540, .hw_value = 11, },
  80 };
  81
  82 static const struct ieee80211_channel rtl818x_channels[] = {
  83         { .center_freq = 2412 },
  84         { .center_freq = 2417 },
  85         { .center_freq = 2422 },
  86         { .center_freq = 2427 },
  87         { .center_freq = 2432 },
  88         { .center_freq = 2437 },
  89         { .center_freq = 2442 },
  90         { .center_freq = 2447 },
  91         { .center_freq = 2452 },
  92         { .center_freq = 2457 },
  93         { .center_freq = 2462 },
  94         { .center_freq = 2467 },
  95         { .center_freq = 2472 },
  96         { .center_freq = 2484 },
  97 };
  98
  99 static void rtl8187_iowrite_async_cb(struct urb *urb)
 100 {
 101         kfree(urb->context);
 102         usb_free_urb(urb);
 103 }
 104
 105 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
 106                                   void *data, u16 len)
 107 {
 108         struct usb_ctrlrequest *dr;
 109         struct urb *urb;
 110         struct rtl8187_async_write_data {
 111                 u8 data[4];
 112                 struct usb_ctrlrequest dr;
 113         } *buf;
 114         int rc;
 115
 116         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
 117         if (!buf)
 118                 return;
 119
 120         urb = usb_alloc_urb(0, GFP_ATOMIC);
 121         if (!urb) {
 122                 kfree(buf);
 123                 return;
 124         }
 125
 126         dr = &buf->dr;
 127
 128         dr->bRequestType = RTL8187_REQT_WRITE;
 129         dr->bRequest = RTL8187_REQ_SET_REG;
 130         dr->wValue = addr;
 131         dr->wIndex = 0;
 132         dr->wLength = cpu_to_le16(len);
 133
 134         memcpy(buf, data, len);
 135
 136         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
 137                              (unsigned char *)dr, buf, len,
 138                              rtl8187_iowrite_async_cb, buf);
 139         rc = usb_submit_urb(urb, GFP_ATOMIC);
 140         if (rc < 0) {
 141                 kfree(buf);
 142                 usb_free_urb(urb);
 143         }
 144 }
 145
 146 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
 147                                            __le32 *addr, u32 val)
 148 {
 149         __le32 buf = cpu_to_le32(val);
 150
 151         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
 152                               &buf, sizeof(buf));
 153 }
 154
 155 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
 156 {
 157         struct rtl8187_priv *priv = dev->priv;
 158
 159         data <<= 8;
 160         data |= addr | 0x80;
 161
 162         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
 163         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
 164         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
 165         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
 166 }
 167
 168 static void rtl8187_tx_cb(struct urb *urb)
 169 {
 170         struct sk_buff *skb = (struct sk_buff *)urb->context;
 171         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 172         struct ieee80211_hw *hw = info->rate_driver_data[0];
 173         struct rtl8187_priv *priv = hw->priv;
 174
 175         usb_free_urb(info->rate_driver_data[1]);
 176         skb_pull(skb, priv->is_rtl8187b ? sizeof(struct rtl8187b_tx_hdr) :
 177                                           sizeof(struct rtl8187_tx_hdr));
 178         ieee80211_tx_info_clear_status(info);
 179
 180         if (!urb->status &&
 181             !(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
 182             priv->is_rtl8187b) {
 183                 skb_queue_tail(&priv->b_tx_status.queue, skb);
 184
 185                 /* queue is "full", discard last items */
 186                 while (skb_queue_len(&priv->b_tx_status.queue) > 5) {
 187                         struct sk_buff *old_skb;
 188
 189                         dev_dbg(&priv->udev->dev,
 190                                 "transmit status queue full\n");
 191
 192                         old_skb = skb_dequeue(&priv->b_tx_status.queue);
 193                         ieee80211_tx_status_irqsafe(hw, old_skb);
 194                 }
 195         } else {
 196                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !urb->status)
 197                         info->flags |= IEEE80211_TX_STAT_ACK;
 198                 ieee80211_tx_status_irqsafe(hw, skb);
 199         }
 200 }
 201
 202 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 203 {
 204         struct rtl8187_priv *priv = dev->priv;
 205         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 206         unsigned int ep;
 207         void *buf;
 208         struct urb *urb;
 209         __le16 rts_dur = 0;
 210         u32 flags;
 211         int rc;
 212
 213         urb = usb_alloc_urb(0, GFP_ATOMIC);
 214         if (!urb) {
 215                 kfree_skb(skb);
 216                 return 0;
 217         }
 218
 219         flags = skb->len;
 220         flags |= RTL818X_TX_DESC_FLAG_NO_ENC;
 221
 222         flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
 223         if (ieee80211_has_morefrags(((struct ieee80211_hdr *)skb->data)->frame_control))
 224                 flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
 225         if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 226                 flags |= RTL818X_TX_DESC_FLAG_RTS;
 227                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 228                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 229                                                  skb->len, info);
 230         } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 231                 flags |= RTL818X_TX_DESC_FLAG_CTS;
 232                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 233         }
 234
 235         if (!priv->is_rtl8187b) {
 236                 struct rtl8187_tx_hdr *hdr =
 237                         (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 238                 hdr->flags = cpu_to_le32(flags);
 239                 hdr->len = 0;
 240                 hdr->rts_duration = rts_dur;
 241                 hdr->retry = cpu_to_le32(info->control.rates[0].count << 8);
 242                 buf = hdr;
 243
 244                 ep = 2;
 245         } else {
 246                 /* fc needs to be calculated before skb_push() */
 247                 unsigned int epmap[4] = { 6, 7, 5, 4 };
 248                 struct ieee80211_hdr *tx_hdr =
 249                         (struct ieee80211_hdr *)(skb->data);
 250                 u16 fc = le16_to_cpu(tx_hdr->frame_control);
 251
 252                 struct rtl8187b_tx_hdr *hdr =
 253                         (struct rtl8187b_tx_hdr *)skb_push(skb, sizeof(*hdr));
 254                 struct ieee80211_rate *txrate =
 255                         ieee80211_get_tx_rate(dev, info);
 256                 memset(hdr, 0, sizeof(*hdr));
 257                 hdr->flags = cpu_to_le32(flags);
 258                 hdr->rts_duration = rts_dur;
 259                 hdr->retry = cpu_to_le32(info->control.rates[0].count << 8);
 260                 hdr->tx_duration =
 261                         ieee80211_generic_frame_duration(dev, priv->vif,
 262                                                          skb->len, txrate);
 263                 buf = hdr;
 264
 265                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
 266                         ep = 12;
 267                 else
 268                         ep = epmap[skb_get_queue_mapping(skb)];
 269         }
 270
 271         info->rate_driver_data[0] = dev;
 272         info->rate_driver_data[1] = urb;
 273
 274         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, ep),
 275                           buf, skb->len, rtl8187_tx_cb, skb);
 276         rc = usb_submit_urb(urb, GFP_ATOMIC);
 277         if (rc < 0) {
 278                 usb_free_urb(urb);
 279                 kfree_skb(skb);
 280         }
 281
 282         return 0;
 283 }
 284
 285 static void rtl8187_rx_cb(struct urb *urb)
 286 {
 287         struct sk_buff *skb = (struct sk_buff *)urb->context;
 288         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 289         struct ieee80211_hw *dev = info->dev;
 290         struct rtl8187_priv *priv = dev->priv;
 291         struct ieee80211_rx_status rx_status = { 0 };
 292         int rate, signal;
 293         u32 flags;
 294         u32 quality;
 295
 296         spin_lock(&priv->rx_queue.lock);
 297         if (skb->next)
 298                 __skb_unlink(skb, &priv->rx_queue);
 299         else {
 300                 spin_unlock(&priv->rx_queue.lock);
 301                 return;
 302         }
 303         spin_unlock(&priv->rx_queue.lock);
 304
 305         if (unlikely(urb->status)) {
 306                 usb_free_urb(urb);
 307                 dev_kfree_skb_irq(skb);
 308                 return;
 309         }
 310
 311         skb_put(skb, urb->actual_length);
 312         if (!priv->is_rtl8187b) {
 313                 struct rtl8187_rx_hdr *hdr =
 314                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
 315                 flags = le32_to_cpu(hdr->flags);
 316                 signal = hdr->signal & 0x7f;
 317                 rx_status.antenna = (hdr->signal >> 7) & 1;
 318                 rx_status.noise = hdr->noise;
 319                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 320                 priv->quality = signal;
 321                 rx_status.qual = priv->quality;
 322                 priv->noise = hdr->noise;
 323                 rate = (flags >> 20) & 0xF;
 324                 if (rate > 3) { /* OFDM rate */
 325                         if (signal > 90)
 326                                 signal = 90;
 327                         else if (signal < 25)
 328                                 signal = 25;
 329                         signal = 90 - signal;
 330                 } else {        /* CCK rate */
 331                         if (signal > 95)
 332                                 signal = 95;
 333                         else if (signal < 30)
 334                                 signal = 30;
 335                         signal = 95 - signal;
 336                 }
 337                 rx_status.signal = signal;
 338                 priv->signal = signal;
 339         } else {
 340                 struct rtl8187b_rx_hdr *hdr =
 341                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
 342                 /* The Realtek datasheet for the RTL8187B shows that the RX
 343                  * header contains the following quantities: signal quality,
 344                  * RSSI, AGC, the received power in dB, and the measured SNR.
 345                  * In testing, none of these quantities show qualitative
 346                  * agreement with AP signal strength, except for the AGC,
 347                  * which is inversely proportional to the strength of the
 348                  * signal. In the following, the quality and signal strength
 349                  * are derived from the AGC. The arbitrary scaling constants
 350                  * are chosen to make the results close to the values obtained
 351                  * for a BCM4312 using b43 as the driver. The noise is ignored
 352                  * for now.
 353                  */
 354                 flags = le32_to_cpu(hdr->flags);
 355                 quality = 170 - hdr->agc;
 356                 if (quality > 100)
 357                         quality = 100;
 358                 signal = 14 - hdr->agc / 2;
 359                 rx_status.qual = quality;
 360                 priv->quality = quality;
 361                 rx_status.signal = signal;
 362                 priv->signal = signal;
 363                 rx_status.antenna = (hdr->rssi >> 7) & 1;
 364                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 365                 rate = (flags >> 20) & 0xF;
 366         }
 367
 368         skb_trim(skb, flags & 0x0FFF);
 369         rx_status.rate_idx = rate;
 370         rx_status.freq = dev->conf.channel->center_freq;
 371         rx_status.band = dev->conf.channel->band;
 372         rx_status.flag |= RX_FLAG_TSFT;
 373         if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
 374                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 375         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 376
 377         skb = dev_alloc_skb(RTL8187_MAX_RX);
 378         if (unlikely(!skb)) {
 379                 usb_free_urb(urb);
 380                 /* TODO check rx queue length and refill *somewhere* */
 381                 return;
 382         }
 383
 384         info = (struct rtl8187_rx_info *)skb->cb;
 385         info->urb = urb;
 386         info->dev = dev;
 387         urb->transfer_buffer = skb_tail_pointer(skb);
 388         urb->context = skb;
 389         skb_queue_tail(&priv->rx_queue, skb);
 390
 391         usb_submit_urb(urb, GFP_ATOMIC);
 392 }
 393
 394 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 395 {
 396         struct rtl8187_priv *priv = dev->priv;
 397         struct urb *entry;
 398         struct sk_buff *skb;
 399         struct rtl8187_rx_info *info;
 400
 401         while (skb_queue_len(&priv->rx_queue) < 8) {
 402                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 403                 if (!skb)
 404                         break;
 405                 entry = usb_alloc_urb(0, GFP_KERNEL);
 406                 if (!entry) {
 407                         kfree_skb(skb);
 408                         break;
 409                 }
 410                 usb_fill_bulk_urb(entry, priv->udev,
 411                                   usb_rcvbulkpipe(priv->udev,
 412                                   priv->is_rtl8187b ? 3 : 1),
 413                                   skb_tail_pointer(skb),
 414                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 415                 info = (struct rtl8187_rx_info *)skb->cb;
 416                 info->urb = entry;
 417                 info->dev = dev;
 418                 skb_queue_tail(&priv->rx_queue, skb);
 419                 usb_submit_urb(entry, GFP_KERNEL);
 420         }
 421
 422         return 0;
 423 }
 424
 425 static void rtl8187b_status_cb(struct urb *urb)
 426 {
 427         struct ieee80211_hw *hw = (struct ieee80211_hw *)urb->context;
 428         struct rtl8187_priv *priv = hw->priv;
 429         u64 val;
 430         unsigned int cmd_type;
 431
 432         if (unlikely(urb->status)) {
 433                 usb_free_urb(urb);
 434                 return;
 435         }
 436
 437         /*
 438          * Read from status buffer:
 439          *
 440          * bits [30:31] = cmd type:
 441          * - 0 indicates tx beacon interrupt
 442          * - 1 indicates tx close descriptor
 443          *
 444          * In the case of tx beacon interrupt:
 445          * [0:9] = Last Beacon CW
 446          * [10:29] = reserved
 447          * [30:31] = 00b
 448          * [32:63] = Last Beacon TSF
 449          *
 450          * If it's tx close descriptor:
 451          * [0:7] = Packet Retry Count
 452          * [8:14] = RTS Retry Count
 453          * [15] = TOK
 454          * [16:27] = Sequence No
 455          * [28] = LS
 456          * [29] = FS
 457          * [30:31] = 01b
 458          * [32:47] = unused (reserved?)
 459          * [48:63] = MAC Used Time
 460          */
 461         val = le64_to_cpu(priv->b_tx_status.buf);
 462
 463         cmd_type = (val >> 30) & 0x3;
 464         if (cmd_type == 1) {
 465                 unsigned int pkt_rc, seq_no;
 466                 bool tok;
 467                 struct sk_buff *skb;
 468                 struct ieee80211_hdr *ieee80211hdr;
 469                 unsigned long flags;
 470
 471                 pkt_rc = val & 0xFF;
 472                 tok = val & (1 << 15);
 473                 seq_no = (val >> 16) & 0xFFF;
 474
 475                 spin_lock_irqsave(&priv->b_tx_status.queue.lock, flags);
 476                 skb_queue_reverse_walk(&priv->b_tx_status.queue, skb) {
 477                         ieee80211hdr = (struct ieee80211_hdr *)skb->data;
 478
 479                         /*
 480                          * While testing, it was discovered that the seq_no
 481                          * doesn't actually contains the sequence number.
 482                          * Instead of returning just the 12 bits of sequence
 483                          * number, hardware is returning entire sequence control
 484                          * (fragment number plus sequence number) in a 12 bit
 485                          * only field overflowing after some time. As a
 486                          * workaround, just consider the lower bits, and expect
 487                          * it's unlikely we wrongly ack some sent data
 488                          */
 489                         if ((le16_to_cpu(ieee80211hdr->seq_ctrl)
 490                             & 0xFFF) == seq_no)
 491                                 break;
 492                 }
 493                 if (skb != (struct sk_buff *) &priv->b_tx_status.queue) {
 494                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 495
 496                         __skb_unlink(skb, &priv->b_tx_status.queue);
 497                         if (tok)
 498                                 info->flags |= IEEE80211_TX_STAT_ACK;
 499                         info->status.rates[0].count = pkt_rc;
 500
 501                         ieee80211_tx_status_irqsafe(hw, skb);
 502                 }
 503                 spin_unlock_irqrestore(&priv->b_tx_status.queue.lock, flags);
 504         }
 505
 506         usb_submit_urb(urb, GFP_ATOMIC);
 507 }
 508
 509 static int rtl8187b_init_status_urb(struct ieee80211_hw *dev)
 510 {
 511         struct rtl8187_priv *priv = dev->priv;
 512         struct urb *entry;
 513
 514         entry = usb_alloc_urb(0, GFP_KERNEL);
 515         if (!entry)
 516                 return -ENOMEM;
 517         priv->b_tx_status.urb = entry;
 518
 519         usb_fill_bulk_urb(entry, priv->udev, usb_rcvbulkpipe(priv->udev, 9),
 520                           &priv->b_tx_status.buf, sizeof(priv->b_tx_status.buf),
 521                           rtl8187b_status_cb, dev);
 522
 523         usb_submit_urb(entry, GFP_KERNEL);
 524
 525         return 0;
 526 }
 527
 528 static int rtl8187_cmd_reset(struct ieee80211_hw *dev)
 529 {
 530         struct rtl8187_priv *priv = dev->priv;
 531         u8 reg;
 532         int i;
 533
 534         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 535         reg &= (1 << 1);
 536         reg |= RTL818X_CMD_RESET;
 537         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 538
 539         i = 10;
 540         do {
 541                 msleep(2);
 542                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 543                       RTL818X_CMD_RESET))
 544                         break;
 545         } while (--i);
 546
 547         if (!i) {
 548                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 549                 return -ETIMEDOUT;
 550         }
 551
 552         /* reload registers from eeprom */
 553         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 554
 555         i = 10;
 556         do {
 557                 msleep(4);
 558                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 559                       RTL818X_EEPROM_CMD_CONFIG))
 560                         break;
 561         } while (--i);
 562
 563         if (!i) {
 564                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 565                        wiphy_name(dev->wiphy));
 566                 return -ETIMEDOUT;
 567         }
 568
 569         return 0;
 570 }
 571
 572 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 573 {
 574         struct rtl8187_priv *priv = dev->priv;
 575         u8 reg;
 576         int res;
 577
 578         /* reset */
 579         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 580                          RTL818X_EEPROM_CMD_CONFIG);
 581         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 582         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg |
 583                          RTL818X_CONFIG3_ANAPARAM_WRITE);
 584         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
 585                           RTL8187_RTL8225_ANAPARAM_ON);
 586         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
 587                           RTL8187_RTL8225_ANAPARAM2_ON);
 588         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg &
 589                          ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 590         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 591                          RTL818X_EEPROM_CMD_NORMAL);
 592
 593         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 594
 595         msleep(200);
 596         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 597         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 598         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 599         msleep(200);
 600
 601         res = rtl8187_cmd_reset(dev);
 602         if (res)
 603                 return res;
 604
 605         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 606         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 607         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 608                         reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 609         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
 610                           RTL8187_RTL8225_ANAPARAM_ON);
 611         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
 612                           RTL8187_RTL8225_ANAPARAM2_ON);
 613         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 614                         reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 615         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 616
 617         /* setup card */
 618         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 619         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 620
 621         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 622         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 623         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 624
 625         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 626
 627         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 628         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 629         reg &= 0x3F;
 630         reg |= 0x80;
 631         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 632
 633         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 634
 635         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 636         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 637         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 638
 639         // TODO: set RESP_RATE and BRSR properly
 640         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 641         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 642
 643         /* host_usb_init */
 644         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 645         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 646         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 647         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 648         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 649         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 650         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 651         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 652         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 653         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 654         msleep(100);
 655
 656         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 657         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 658         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 659         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 660                          RTL818X_EEPROM_CMD_CONFIG);
 661         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 662         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 663                          RTL818X_EEPROM_CMD_NORMAL);
 664         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 665         msleep(100);
 666
 667         priv->rf->init(dev);
 668
 669         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 670         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 671         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 672         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 673         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 674         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 675         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 676
 677         return 0;
 678 }
 679
 680 static const u8 rtl8187b_reg_table[][3] = {
 681         {0xF0, 0x32, 0}, {0xF1, 0x32, 0}, {0xF2, 0x00, 0}, {0xF3, 0x00, 0},
 682         {0xF4, 0x32, 0}, {0xF5, 0x43, 0}, {0xF6, 0x00, 0}, {0xF7, 0x00, 0},
 683         {0xF8, 0x46, 0}, {0xF9, 0xA4, 0}, {0xFA, 0x00, 0}, {0xFB, 0x00, 0},
 684         {0xFC, 0x96, 0}, {0xFD, 0xA4, 0}, {0xFE, 0x00, 0}, {0xFF, 0x00, 0},
 685
 686         {0x58, 0x4B, 1}, {0x59, 0x00, 1}, {0x5A, 0x4B, 1}, {0x5B, 0x00, 1},
 687         {0x60, 0x4B, 1}, {0x61, 0x09, 1}, {0x62, 0x4B, 1}, {0x63, 0x09, 1},
 688         {0xCE, 0x0F, 1}, {0xCF, 0x00, 1}, {0xE0, 0xFF, 1}, {0xE1, 0x0F, 1},
 689         {0xE2, 0x00, 1}, {0xF0, 0x4E, 1}, {0xF1, 0x01, 1}, {0xF2, 0x02, 1},
 690         {0xF3, 0x03, 1}, {0xF4, 0x04, 1}, {0xF5, 0x05, 1}, {0xF6, 0x06, 1},
 691         {0xF7, 0x07, 1}, {0xF8, 0x08, 1},
 692
 693         {0x4E, 0x00, 2}, {0x0C, 0x04, 2}, {0x21, 0x61, 2}, {0x22, 0x68, 2},
 694         {0x23, 0x6F, 2}, {0x24, 0x76, 2}, {0x25, 0x7D, 2}, {0x26, 0x84, 2},
 695         {0x27, 0x8D, 2}, {0x4D, 0x08, 2}, {0x50, 0x05, 2}, {0x51, 0xF5, 2},
 696         {0x52, 0x04, 2}, {0x53, 0xA0, 2}, {0x54, 0x1F, 2}, {0x55, 0x23, 2},
 697         {0x56, 0x45, 2}, {0x57, 0x67, 2}, {0x58, 0x08, 2}, {0x59, 0x08, 2},
 698         {0x5A, 0x08, 2}, {0x5B, 0x08, 2}, {0x60, 0x08, 2}, {0x61, 0x08, 2},
 699         {0x62, 0x08, 2}, {0x63, 0x08, 2}, {0x64, 0xCF, 2}, {0x72, 0x56, 2},
 700         {0x73, 0x9A, 2},
 701
 702         {0x34, 0xF0, 0}, {0x35, 0x0F, 0}, {0x5B, 0x40, 0}, {0x84, 0x88, 0},
 703         {0x85, 0x24, 0}, {0x88, 0x54, 0}, {0x8B, 0xB8, 0}, {0x8C, 0x07, 0},
 704         {0x8D, 0x00, 0}, {0x94, 0x1B, 0}, {0x95, 0x12, 0}, {0x96, 0x00, 0},
 705         {0x97, 0x06, 0}, {0x9D, 0x1A, 0}, {0x9F, 0x10, 0}, {0xB4, 0x22, 0},
 706         {0xBE, 0x80, 0}, {0xDB, 0x00, 0}, {0xEE, 0x00, 0}, {0x91, 0x03, 0},
 707
 708         {0x4C, 0x00, 2}, {0x9F, 0x00, 3}, {0x8C, 0x01, 0}, {0x8D, 0x10, 0},
 709         {0x8E, 0x08, 0}, {0x8F, 0x00, 0}
 710 };
 711
 712 static int rtl8187b_init_hw(struct ieee80211_hw *dev)
 713 {
 714         struct rtl8187_priv *priv = dev->priv;
 715         int res, i;
 716         u8 reg;
 717
 718         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 719                          RTL818X_EEPROM_CMD_CONFIG);
 720
 721         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 722         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE | RTL818X_CONFIG3_GNT_SELECT;
 723         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 724         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
 725                           RTL8187B_RTL8225_ANAPARAM2_ON);
 726         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
 727                           RTL8187B_RTL8225_ANAPARAM_ON);
 728         rtl818x_iowrite8(priv, &priv->map->ANAPARAM3,
 729                          RTL8187B_RTL8225_ANAPARAM3_ON);
 730
 731         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0x10);
 732         reg = rtl818x_ioread8(priv, (u8 *)0xFF62);
 733         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg & ~(1 << 5));
 734         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg | (1 << 5));
 735
 736         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 737         reg &= ~RTL818X_CONFIG3_ANAPARAM_WRITE;
 738         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 739
 740         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 741                          RTL818X_EEPROM_CMD_NORMAL);
 742
 743         res = rtl8187_cmd_reset(dev);
 744         if (res)
 745                 return res;
 746
 747         rtl818x_iowrite16(priv, (__le16 *)0xFF2D, 0x0FFF);
 748         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 749         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 750         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 751         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 752         reg |= RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT |
 753                RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 754         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 755
 756         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFE0, 0x0FFF, 1);
 757         reg = rtl818x_ioread8(priv, &priv->map->RATE_FALLBACK);
 758         reg |= RTL818X_RATE_FALLBACK_ENABLE;
 759         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, reg);
 760
 761         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 762         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 763         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFD4, 0xFFFF, 1);
 764
 765         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 766                          RTL818X_EEPROM_CMD_CONFIG);
 767         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 768         rtl818x_iowrite8(priv, &priv->map->CONFIG1, (reg & 0x3F) | 0x80);
 769         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 770                          RTL818X_EEPROM_CMD_NORMAL);
 771
 772         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 773         for (i = 0; i < ARRAY_SIZE(rtl8187b_reg_table); i++) {
 774                 rtl818x_iowrite8_idx(priv,
 775                                      (u8 *)(uintptr_t)
 776                                      (rtl8187b_reg_table[i][0] | 0xFF00),
 777                                      rtl8187b_reg_table[i][1],
 778                                      rtl8187b_reg_table[i][2]);
 779         }
 780
 781         rtl818x_iowrite16(priv, &priv->map->TID_AC_MAP, 0xFA50);
 782         rtl818x_iowrite16(priv, &priv->map->INT_MIG, 0);
 783
 784         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF0, 0, 1);
 785         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF4, 0, 1);
 786         rtl818x_iowrite8_idx(priv, (u8 *)0xFFF8, 0, 1);
 787
 788         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x00004001);
 789
 790         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x569A, 2);
 791
 792         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 793                          RTL818X_EEPROM_CMD_CONFIG);
 794         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 795         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE;
 796         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 797         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 798                          RTL818X_EEPROM_CMD_NORMAL);
 799
 800         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x0480);
 801         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x2488);
 802         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FFF);
 803         msleep(100);
 804
 805         priv->rf->init(dev);
 806
 807         reg = RTL818X_CMD_TX_ENABLE | RTL818X_CMD_RX_ENABLE;
 808         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 809         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 810
 811         rtl818x_iowrite8(priv, (u8 *)0xFE41, 0xF4);
 812         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x00);
 813         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 814         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 815         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x0F);
 816         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 817         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 818
 819         reg = rtl818x_ioread8(priv, (u8 *)0xFFDB);
 820         rtl818x_iowrite8(priv, (u8 *)0xFFDB, reg | (1 << 2));
 821         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x59FA, 3);
 822         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF74, 0x59D2, 3);
 823         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF76, 0x59D2, 3);
 824         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF78, 0x19FA, 3);
 825         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7A, 0x19FA, 3);
 826         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7C, 0x00D0, 3);
 827         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0);
 828         rtl818x_iowrite8_idx(priv, (u8 *)0xFF80, 0x0F, 1);
 829         rtl818x_iowrite8_idx(priv, (u8 *)0xFF83, 0x03, 1);
 830         rtl818x_iowrite8(priv, (u8 *)0xFFDA, 0x10);
 831         rtl818x_iowrite8_idx(priv, (u8 *)0xFF4D, 0x08, 2);
 832
 833         rtl818x_iowrite32(priv, &priv->map->HSSI_PARA, 0x0600321B);
 834
 835         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFEC, 0x0800, 1);
 836
 837         priv->slot_time = 0x9;
 838         priv->aifsn[0] = 2; /* AIFSN[AC_VO] */
 839         priv->aifsn[1] = 2; /* AIFSN[AC_VI] */
 840         priv->aifsn[2] = 7; /* AIFSN[AC_BK] */
 841         priv->aifsn[3] = 3; /* AIFSN[AC_BE] */
 842         rtl818x_iowrite8(priv, &priv->map->ACM_CONTROL, 0);
 843
 844         return 0;
 845 }
 846
 847 static int rtl8187_start(struct ieee80211_hw *dev)
 848 {
 849         struct rtl8187_priv *priv = dev->priv;
 850         u32 reg;
 851         int ret;
 852
 853         ret = (!priv->is_rtl8187b) ? rtl8187_init_hw(dev) :
 854                                      rtl8187b_init_hw(dev);
 855         if (ret)
 856                 return ret;
 857
 858         mutex_lock(&priv->conf_mutex);
 859         if (priv->is_rtl8187b) {
 860                 reg = RTL818X_RX_CONF_MGMT |
 861                       RTL818X_RX_CONF_DATA |
 862                       RTL818X_RX_CONF_BROADCAST |
 863                       RTL818X_RX_CONF_NICMAC |
 864                       RTL818X_RX_CONF_BSSID |
 865                       (7 << 13 /* RX FIFO threshold NONE */) |
 866                       (7 << 10 /* MAX RX DMA */) |
 867                       RTL818X_RX_CONF_RX_AUTORESETPHY |
 868                       RTL818X_RX_CONF_ONLYERLPKT |
 869                       RTL818X_RX_CONF_MULTICAST;
 870                 priv->rx_conf = reg;
 871                 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 872
 873                 rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 874                                   RTL818X_TX_CONF_HW_SEQNUM |
 875                                   RTL818X_TX_CONF_DISREQQSIZE |
 876                                   (7 << 8  /* short retry limit */) |
 877                                   (7 << 0  /* long retry limit */) |
 878                                   (7 << 21 /* MAX TX DMA */));
 879                 rtl8187_init_urbs(dev);
 880                 rtl8187b_init_status_urb(dev);
 881                 mutex_unlock(&priv->conf_mutex);
 882                 return 0;
 883         }
 884
 885         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 886
 887         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 888         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 889
 890         rtl8187_init_urbs(dev);
 891
 892         reg = RTL818X_RX_CONF_ONLYERLPKT |
 893               RTL818X_RX_CONF_RX_AUTORESETPHY |
 894               RTL818X_RX_CONF_BSSID |
 895               RTL818X_RX_CONF_MGMT |
 896               RTL818X_RX_CONF_DATA |
 897               (7 << 13 /* RX FIFO threshold NONE */) |
 898               (7 << 10 /* MAX RX DMA */) |
 899               RTL818X_RX_CONF_BROADCAST |
 900               RTL818X_RX_CONF_NICMAC;
 901
 902         priv->rx_conf = reg;
 903         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 904
 905         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 906         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 907         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 908         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 909
 910         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 911         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 912         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 913         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 914         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 915
 916         reg  = RTL818X_TX_CONF_CW_MIN |
 917                (7 << 21 /* MAX TX DMA */) |
 918                RTL818X_TX_CONF_NO_ICV;
 919         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 920
 921         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 922         reg |= RTL818X_CMD_TX_ENABLE;
 923         reg |= RTL818X_CMD_RX_ENABLE;
 924         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 925         mutex_unlock(&priv->conf_mutex);
 926
 927         return 0;
 928 }
 929
 930 static void rtl8187_stop(struct ieee80211_hw *dev)
 931 {
 932         struct rtl8187_priv *priv = dev->priv;
 933         struct rtl8187_rx_info *info;
 934         struct sk_buff *skb;
 935         u32 reg;
 936
 937         mutex_lock(&priv->conf_mutex);
 938         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 939
 940         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 941         reg &= ~RTL818X_CMD_TX_ENABLE;
 942         reg &= ~RTL818X_CMD_RX_ENABLE;
 943         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 944
 945         priv->rf->stop(dev);
 946
 947         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 948         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 949         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 950         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 951
 952         while ((skb = skb_dequeue(&priv->rx_queue))) {
 953                 info = (struct rtl8187_rx_info *)skb->cb;
 954                 usb_kill_urb(info->urb);
 955                 kfree_skb(skb);
 956         }
 957         while ((skb = skb_dequeue(&priv->b_tx_status.queue)))
 958                 dev_kfree_skb_any(skb);
 959         usb_kill_urb(priv->b_tx_status.urb);
 960         mutex_unlock(&priv->conf_mutex);
 961 }
 962
 963 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 964                                  struct ieee80211_if_init_conf *conf)
 965 {
 966         struct rtl8187_priv *priv = dev->priv;
 967         int i;
 968
 969         if (priv->mode != NL80211_IFTYPE_MONITOR)
 970                 return -EOPNOTSUPP;
 971
 972         switch (conf->type) {
 973         case NL80211_IFTYPE_STATION:
 974                 priv->mode = conf->type;
 975                 break;
 976         default:
 977                 return -EOPNOTSUPP;
 978         }
 979
 980         mutex_lock(&priv->conf_mutex);
 981         priv->vif = conf->vif;
 982
 983         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 984         for (i = 0; i < ETH_ALEN; i++)
 985                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
 986                                  ((u8 *)conf->mac_addr)[i]);
 987         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 988
 989         mutex_unlock(&priv->conf_mutex);
 990         return 0;
 991 }
 992
 993 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
 994                                      struct ieee80211_if_init_conf *conf)
 995 {
 996         struct rtl8187_priv *priv = dev->priv;
 997         mutex_lock(&priv->conf_mutex);
 998         priv->mode = NL80211_IFTYPE_MONITOR;
 999         priv->vif = NULL;
1000         mutex_unlock(&priv->conf_mutex);
1001 }
1002
1003 static int rtl8187_config(struct ieee80211_hw *dev, u32 changed)
1004 {
1005         struct rtl8187_priv *priv = dev->priv;
1006         struct ieee80211_conf *conf = &dev->conf;
1007         u32 reg;
1008
1009         mutex_lock(&priv->conf_mutex);
1010         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1011         /* Enable TX loopback on MAC level to avoid TX during channel
1012          * changes, as this has be seen to causes problems and the
1013          * card will stop work until next reset
1014          */
1015         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
1016                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
1017         priv->rf->set_chan(dev, conf);
1018         msleep(10);
1019         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
1020
1021         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
1022         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
1023         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
1024         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
1025         mutex_unlock(&priv->conf_mutex);
1026         return 0;
1027 }
1028
1029 static int rtl8187_config_interface(struct ieee80211_hw *dev,
1030                                     struct ieee80211_vif *vif,
1031                                     struct ieee80211_if_conf *conf)
1032 {
1033         struct rtl8187_priv *priv = dev->priv;
1034         int i;
1035         u8 reg;
1036
1037         mutex_lock(&priv->conf_mutex);
1038         for (i = 0; i < ETH_ALEN; i++)
1039                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
1040
1041         if (is_valid_ether_addr(conf->bssid)) {
1042                 reg = RTL818X_MSR_INFRA;
1043                 if (priv->is_rtl8187b)
1044                         reg |= RTL818X_MSR_ENEDCA;
1045                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1046         } else {
1047                 reg = RTL818X_MSR_NO_LINK;
1048                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1049         }
1050
1051         mutex_unlock(&priv->conf_mutex);
1052         return 0;
1053 }
1054
1055 /*
1056  * With 8187B, AC_*_PARAM clashes with FEMR definition in struct rtl818x_csr for
1057  * example. Thus we have to use raw values for AC_*_PARAM register addresses.
1058  */
1059 static __le32 *rtl8187b_ac_addr[4] = {
1060         (__le32 *) 0xFFF0, /* AC_VO */
1061         (__le32 *) 0xFFF4, /* AC_VI */
1062         (__le32 *) 0xFFFC, /* AC_BK */
1063         (__le32 *) 0xFFF8, /* AC_BE */
1064 };
1065
1066 #define SIFS_TIME 0xa
1067
1068 static void rtl8187_conf_erp(struct rtl8187_priv *priv, bool use_short_slot,
1069                              bool use_short_preamble)
1070 {
1071         if (priv->is_rtl8187b) {
1072                 u8 difs, eifs;
1073                 u16 ack_timeout;
1074                 int queue;
1075
1076                 if (use_short_slot) {
1077                         priv->slot_time = 0x9;
1078                         difs = 0x1c;
1079                         eifs = 0x53;
1080                 } else {
1081                         priv->slot_time = 0x14;
1082                         difs = 0x32;
1083                         eifs = 0x5b;
1084                 }
1085                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1086                 rtl818x_iowrite8(priv, &priv->map->SLOT, priv->slot_time);
1087                 rtl818x_iowrite8(priv, &priv->map->DIFS, difs);
1088
1089                 /*
1090                  * BRSR+1 on 8187B is in fact EIFS register
1091                  * Value in units of 4 us
1092                  */
1093                 rtl818x_iowrite8(priv, (u8 *)&priv->map->BRSR + 1, eifs);
1094
1095                 /*
1096                  * For 8187B, CARRIER_SENSE_COUNTER is in fact ack timeout
1097                  * register. In units of 4 us like eifs register
1098                  * ack_timeout = ack duration + plcp + difs + preamble
1099                  */
1100                 ack_timeout = 112 + 48 + difs;
1101                 if (use_short_preamble)
1102                         ack_timeout += 72;
1103                 else
1104                         ack_timeout += 144;
1105                 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER,
1106                                  DIV_ROUND_UP(ack_timeout, 4));
1107
1108                 for (queue = 0; queue < 4; queue++)
1109                         rtl818x_iowrite8(priv, (u8 *) rtl8187b_ac_addr[queue],
1110                                          priv->aifsn[queue] * priv->slot_time +
1111                                          SIFS_TIME);
1112         } else {
1113                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1114                 if (use_short_slot) {
1115                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
1116                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
1117                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
1118                 } else {
1119                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
1120                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
1121                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
1122                 }
1123         }
1124 }
1125
1126 static void rtl8187_bss_info_changed(struct ieee80211_hw *dev,
1127                                      struct ieee80211_vif *vif,
1128                                      struct ieee80211_bss_conf *info,
1129                                      u32 changed)
1130 {
1131         struct rtl8187_priv *priv = dev->priv;
1132
1133         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE))
1134                 rtl8187_conf_erp(priv, info->use_short_slot,
1135                                  info->use_short_preamble);
1136 }
1137
1138 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
1139                                      unsigned int changed_flags,
1140                                      unsigned int *total_flags,
1141                                      int mc_count, struct dev_addr_list *mclist)
1142 {
1143         struct rtl8187_priv *priv = dev->priv;
1144
1145         if (changed_flags & FIF_FCSFAIL)
1146                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
1147         if (changed_flags & FIF_CONTROL)
1148                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
1149         if (changed_flags & FIF_OTHER_BSS)
1150                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
1151         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
1152                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
1153         else
1154                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
1155
1156         *total_flags = 0;
1157
1158         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
1159                 *total_flags |= FIF_FCSFAIL;
1160         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
1161                 *total_flags |= FIF_CONTROL;
1162         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
1163                 *total_flags |= FIF_OTHER_BSS;
1164         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
1165                 *total_flags |= FIF_ALLMULTI;
1166
1167         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
1168 }
1169
1170 static int rtl8187_conf_tx(struct ieee80211_hw *dev, u16 queue,
1171                            const struct ieee80211_tx_queue_params *params)
1172 {
1173         struct rtl8187_priv *priv = dev->priv;
1174         u8 cw_min, cw_max;
1175
1176         if (queue > 3)
1177                 return -EINVAL;
1178
1179         cw_min = fls(params->cw_min);
1180         cw_max = fls(params->cw_max);
1181
1182         if (priv->is_rtl8187b) {
1183                 priv->aifsn[queue] = params->aifs;
1184
1185                 /*
1186                  * This is the structure of AC_*_PARAM registers in 8187B:
1187                  * - TXOP limit field, bit offset = 16
1188                  * - ECWmax, bit offset = 12
1189                  * - ECWmin, bit offset = 8
1190                  * - AIFS, bit offset = 0
1191                  */
1192                 rtl818x_iowrite32(priv, rtl8187b_ac_addr[queue],
1193                                   (params->txop << 16) | (cw_max << 12) |
1194                                   (cw_min << 8) | (params->aifs *
1195                                   priv->slot_time + SIFS_TIME));
1196         } else {
1197                 if (queue != 0)
1198                         return -EINVAL;
1199
1200                 rtl818x_iowrite8(priv, &priv->map->CW_VAL,
1201                                  cw_min | (cw_max << 4));
1202         }
1203         return 0;
1204 }
1205
1206 static const struct ieee80211_ops rtl8187_ops = {
1207         .tx                     = rtl8187_tx,
1208         .start                  = rtl8187_start,
1209         .stop                   = rtl8187_stop,
1210         .add_interface          = rtl8187_add_interface,
1211         .remove_interface       = rtl8187_remove_interface,
1212         .config                 = rtl8187_config,
1213         .config_interface       = rtl8187_config_interface,
1214         .bss_info_changed       = rtl8187_bss_info_changed,
1215         .configure_filter       = rtl8187_configure_filter,
1216         .conf_tx                = rtl8187_conf_tx
1217 };
1218
1219 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
1220 {
1221         struct ieee80211_hw *dev = eeprom->data;
1222         struct rtl8187_priv *priv = dev->priv;
1223         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1224
1225         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
1226         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
1227         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
1228         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
1229 }
1230
1231 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
1232 {
1233         struct ieee80211_hw *dev = eeprom->data;
1234         struct rtl8187_priv *priv = dev->priv;
1235         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
1236
1237         if (eeprom->reg_data_in)
1238                 reg |= RTL818X_EEPROM_CMD_WRITE;
1239         if (eeprom->reg_data_out)
1240                 reg |= RTL818X_EEPROM_CMD_READ;
1241         if (eeprom->reg_data_clock)
1242                 reg |= RTL818X_EEPROM_CMD_CK;
1243         if (eeprom->reg_chip_select)
1244                 reg |= RTL818X_EEPROM_CMD_CS;
1245
1246         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
1247         udelay(10);
1248 }
1249
1250 static int __devinit rtl8187_probe(struct usb_interface *intf,
1251                                    const struct usb_device_id *id)
1252 {
1253         struct usb_device *udev = interface_to_usbdev(intf);
1254         struct ieee80211_hw *dev;
1255         struct rtl8187_priv *priv;
1256         struct eeprom_93cx6 eeprom;
1257         struct ieee80211_channel *channel;
1258         const char *chip_name;
1259         u16 txpwr, reg;
1260         int err, i;
1261
1262         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
1263         if (!dev) {
1264                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
1265                 return -ENOMEM;
1266         }
1267
1268         priv = dev->priv;
1269         priv->is_rtl8187b = (id->driver_info == DEVICE_RTL8187B);
1270
1271         SET_IEEE80211_DEV(dev, &intf->dev);
1272         usb_set_intfdata(intf, dev);
1273         priv->udev = udev;
1274
1275         usb_get_dev(udev);
1276
1277         skb_queue_head_init(&priv->rx_queue);
1278
1279         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
1280         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
1281
1282         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
1283         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
1284         priv->map = (struct rtl818x_csr *)0xFF00;
1285
1286         priv->band.band = IEEE80211_BAND_2GHZ;
1287         priv->band.channels = priv->channels;
1288         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
1289         priv->band.bitrates = priv->rates;
1290         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
1291         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
1292
1293
1294         priv->mode = NL80211_IFTYPE_MONITOR;
1295         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1296                      IEEE80211_HW_RX_INCLUDES_FCS;
1297
1298         eeprom.data = dev;
1299         eeprom.register_read = rtl8187_eeprom_register_read;
1300         eeprom.register_write = rtl8187_eeprom_register_write;
1301         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
1302                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
1303         else
1304                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
1305
1306         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1307         udelay(10);
1308
1309         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
1310                                (__le16 __force *)dev->wiphy->perm_addr, 3);
1311         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
1312                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
1313                        "generated MAC address\n");
1314                 random_ether_addr(dev->wiphy->perm_addr);
1315         }
1316
1317         channel = priv->channels;
1318         for (i = 0; i < 3; i++) {
1319                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
1320                                   &txpwr);
1321                 (*channel++).hw_value = txpwr & 0xFF;
1322                 (*channel++).hw_value = txpwr >> 8;
1323         }
1324         for (i = 0; i < 2; i++) {
1325                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
1326                                   &txpwr);
1327                 (*channel++).hw_value = txpwr & 0xFF;
1328                 (*channel++).hw_value = txpwr >> 8;
1329         }
1330
1331         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
1332                           &priv->txpwr_base);
1333
1334         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
1335         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
1336         /* 0 means asic B-cut, we should use SW 3 wire
1337          * bit-by-bit banging for radio. 1 means we can use
1338          * USB specific request to write radio registers */
1339         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
1340         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
1341         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1342
1343         if (!priv->is_rtl8187b) {
1344                 u32 reg32;
1345                 reg32 = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1346                 reg32 &= RTL818X_TX_CONF_HWVER_MASK;
1347                 switch (reg32) {
1348                 case RTL818X_TX_CONF_R8187vD_B:
1349                         /* Some RTL8187B devices have a USB ID of 0x8187
1350                          * detect them here */
1351                         chip_name = "RTL8187BvB(early)";
1352                         priv->is_rtl8187b = 1;
1353                         priv->hw_rev = RTL8187BvB;
1354                         break;
1355                 case RTL818X_TX_CONF_R8187vD:
1356                         chip_name = "RTL8187vD";
1357                         break;
1358                 default:
1359                         chip_name = "RTL8187vB (default)";
1360                 }
1361        } else {
1362                 /*
1363                  * Force USB request to write radio registers for 8187B, Realtek
1364                  * only uses it in their sources
1365                  */
1366                 /*if (priv->asic_rev == 0) {
1367                         printk(KERN_WARNING "rtl8187: Forcing use of USB "
1368                                "requests to write to radio registers\n");
1369                         priv->asic_rev = 1;
1370                 }*/
1371                 switch (rtl818x_ioread8(priv, (u8 *)0xFFE1)) {
1372                 case RTL818X_R8187B_B:
1373                         chip_name = "RTL8187BvB";
1374                         priv->hw_rev = RTL8187BvB;
1375                         break;
1376                 case RTL818X_R8187B_D:
1377                         chip_name = "RTL8187BvD";
1378                         priv->hw_rev = RTL8187BvD;
1379                         break;
1380                 case RTL818X_R8187B_E:
1381                         chip_name = "RTL8187BvE";
1382                         priv->hw_rev = RTL8187BvE;
1383                         break;
1384                 default:
1385                         chip_name = "RTL8187BvB (default)";
1386                         priv->hw_rev = RTL8187BvB;
1387                 }
1388         }
1389
1390         if (!priv->is_rtl8187b) {
1391                 for (i = 0; i < 2; i++) {
1392                         eeprom_93cx6_read(&eeprom,
1393                                           RTL8187_EEPROM_TXPWR_CHAN_6 + i,
1394                                           &txpwr);
1395                         (*channel++).hw_value = txpwr & 0xFF;
1396                         (*channel++).hw_value = txpwr >> 8;
1397                 }
1398         } else {
1399                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6,
1400                                   &txpwr);
1401                 (*channel++).hw_value = txpwr & 0xFF;
1402
1403                 eeprom_93cx6_read(&eeprom, 0x0A, &txpwr);
1404                 (*channel++).hw_value = txpwr & 0xFF;
1405
1406                 eeprom_93cx6_read(&eeprom, 0x1C, &txpwr);
1407                 (*channel++).hw_value = txpwr & 0xFF;
1408                 (*channel++).hw_value = txpwr >> 8;
1409         }
1410
1411         if (priv->is_rtl8187b) {
1412                 printk(KERN_WARNING "rtl8187: 8187B chip detected.\n");
1413                 dev->flags |= IEEE80211_HW_SIGNAL_DBM;
1414         } else {
1415                 dev->flags |= IEEE80211_HW_SIGNAL_UNSPEC;
1416                 dev->max_signal = 65;
1417         }
1418
1419         /*
1420          * XXX: Once this driver supports anything that requires
1421          *      beacons it must implement IEEE80211_TX_CTL_ASSIGN_SEQ.
1422          */
1423         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1424
1425         if ((id->driver_info == DEVICE_RTL8187) && priv->is_rtl8187b)
1426                 printk(KERN_INFO "rtl8187: inconsistency between id with OEM"
1427                        " info!\n");
1428
1429         priv->rf = rtl8187_detect_rf(dev);
1430         dev->extra_tx_headroom = (!priv->is_rtl8187b) ?
1431                                   sizeof(struct rtl8187_tx_hdr) :
1432                                   sizeof(struct rtl8187b_tx_hdr);
1433         if (!priv->is_rtl8187b)
1434                 dev->queues = 1;
1435         else
1436                 dev->queues = 4;
1437
1438         err = ieee80211_register_hw(dev);
1439         if (err) {
1440                 printk(KERN_ERR "rtl8187: Cannot register device\n");
1441                 goto err_free_dev;
1442         }
1443         mutex_init(&priv->conf_mutex);
1444         skb_queue_head_init(&priv->b_tx_status.queue);
1445
1446         printk(KERN_INFO "%s: hwaddr %pM, %s V%d + %s\n",
1447                wiphy_name(dev->wiphy), dev->wiphy->perm_addr,
1448                chip_name, priv->asic_rev, priv->rf->name);
1449
1450         return 0;
1451
1452  err_free_dev:
1453         ieee80211_free_hw(dev);
1454         usb_set_intfdata(intf, NULL);
1455         usb_put_dev(udev);
1456         return err;
1457 }
1458
1459 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
1460 {
1461         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1462         struct rtl8187_priv *priv;
1463
1464         if (!dev)
1465                 return;
1466
1467         ieee80211_unregister_hw(dev);
1468
1469         priv = dev->priv;
1470         usb_put_dev(interface_to_usbdev(intf));
1471         ieee80211_free_hw(dev);
1472 }
1473
1474 static struct usb_driver rtl8187_driver = {
1475         .name           = KBUILD_MODNAME,
1476         .id_table       = rtl8187_table,
1477         .probe          = rtl8187_probe,
1478         .disconnect     = __devexit_p(rtl8187_disconnect),
1479 };
1480
1481 static int __init rtl8187_init(void)
1482 {
1483         return usb_register(&rtl8187_driver);
1484 }
1485
1486 static void __exit rtl8187_exit(void)
1487 {
1488         usb_deregister(&rtl8187_driver);
1489 }
1490
1491 module_init(rtl8187_init);
1492 module_exit(rtl8187_exit);