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         /* Surecom */
  52         {USB_DEVICE(0x0769, 0x11F2), .driver_info = DEVICE_RTL8187},
  53         /* Logitech */
  54         {USB_DEVICE(0x0789, 0x010C), .driver_info = DEVICE_RTL8187},
  55         /* Netgear */
  56         {USB_DEVICE(0x0846, 0x6100), .driver_info = DEVICE_RTL8187},
  57         {USB_DEVICE(0x0846, 0x6a00), .driver_info = DEVICE_RTL8187},
  58         {USB_DEVICE(0x0846, 0x4260), .driver_info = DEVICE_RTL8187B},
  59         /* HP */
  60         {USB_DEVICE(0x03f0, 0xca02), .driver_info = DEVICE_RTL8187},
  61         /* Sitecom */
  62         {USB_DEVICE(0x0df6, 0x000d), .driver_info = DEVICE_RTL8187},
  63         {USB_DEVICE(0x0df6, 0x0028), .driver_info = DEVICE_RTL8187B},
  64         /* Sphairon Access Systems GmbH */
  65         {USB_DEVICE(0x114B, 0x0150), .driver_info = DEVICE_RTL8187},
  66         /* Dick Smith Electronics */
  67         {USB_DEVICE(0x1371, 0x9401), .driver_info = DEVICE_RTL8187},
  68         /* Abocom */
  69         {USB_DEVICE(0x13d1, 0xabe6), .driver_info = DEVICE_RTL8187},
  70         /* Qcom */
  71         {USB_DEVICE(0x18E8, 0x6232), .driver_info = DEVICE_RTL8187},
  72         /* AirLive */
  73         {USB_DEVICE(0x1b75, 0x8187), .driver_info = DEVICE_RTL8187},
  74         {}
  75 };
  76
  77 MODULE_DEVICE_TABLE(usb, rtl8187_table);
  78
  79 static const struct ieee80211_rate rtl818x_rates[] = {
  80         { .bitrate = 10, .hw_value = 0, },
  81         { .bitrate = 20, .hw_value = 1, },
  82         { .bitrate = 55, .hw_value = 2, },
  83         { .bitrate = 110, .hw_value = 3, },
  84         { .bitrate = 60, .hw_value = 4, },
  85         { .bitrate = 90, .hw_value = 5, },
  86         { .bitrate = 120, .hw_value = 6, },
  87         { .bitrate = 180, .hw_value = 7, },
  88         { .bitrate = 240, .hw_value = 8, },
  89         { .bitrate = 360, .hw_value = 9, },
  90         { .bitrate = 480, .hw_value = 10, },
  91         { .bitrate = 540, .hw_value = 11, },
  92 };
  93
  94 static const struct ieee80211_channel rtl818x_channels[] = {
  95         { .center_freq = 2412 },
  96         { .center_freq = 2417 },
  97         { .center_freq = 2422 },
  98         { .center_freq = 2427 },
  99         { .center_freq = 2432 },
 100         { .center_freq = 2437 },
 101         { .center_freq = 2442 },
 102         { .center_freq = 2447 },
 103         { .center_freq = 2452 },
 104         { .center_freq = 2457 },
 105         { .center_freq = 2462 },
 106         { .center_freq = 2467 },
 107         { .center_freq = 2472 },
 108         { .center_freq = 2484 },
 109 };
 110
 111 static void rtl8187_iowrite_async_cb(struct urb *urb)
 112 {
 113         kfree(urb->context);
 114 }
 115
 116 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
 117                                   void *data, u16 len)
 118 {
 119         struct usb_ctrlrequest *dr;
 120         struct urb *urb;
 121         struct rtl8187_async_write_data {
 122                 u8 data[4];
 123                 struct usb_ctrlrequest dr;
 124         } *buf;
 125         int rc;
 126
 127         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
 128         if (!buf)
 129                 return;
 130
 131         urb = usb_alloc_urb(0, GFP_ATOMIC);
 132         if (!urb) {
 133                 kfree(buf);
 134                 return;
 135         }
 136
 137         dr = &buf->dr;
 138
 139         dr->bRequestType = RTL8187_REQT_WRITE;
 140         dr->bRequest = RTL8187_REQ_SET_REG;
 141         dr->wValue = addr;
 142         dr->wIndex = 0;
 143         dr->wLength = cpu_to_le16(len);
 144
 145         memcpy(buf, data, len);
 146
 147         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
 148                              (unsigned char *)dr, buf, len,
 149                              rtl8187_iowrite_async_cb, buf);
 150         usb_anchor_urb(urb, &priv->anchored);
 151         rc = usb_submit_urb(urb, GFP_ATOMIC);
 152         if (rc < 0) {
 153                 kfree(buf);
 154                 usb_unanchor_urb(urb);
 155         }
 156         usb_free_urb(urb);
 157 }
 158
 159 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
 160                                            __le32 *addr, u32 val)
 161 {
 162         __le32 buf = cpu_to_le32(val);
 163
 164         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
 165                               &buf, sizeof(buf));
 166 }
 167
 168 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
 169 {
 170         struct rtl8187_priv *priv = dev->priv;
 171
 172         data <<= 8;
 173         data |= addr | 0x80;
 174
 175         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
 176         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
 177         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
 178         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
 179 }
 180
 181 static void rtl8187_tx_cb(struct urb *urb)
 182 {
 183         struct sk_buff *skb = (struct sk_buff *)urb->context;
 184         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 185         struct ieee80211_hw *hw = info->rate_driver_data[0];
 186         struct rtl8187_priv *priv = hw->priv;
 187
 188         skb_pull(skb, priv->is_rtl8187b ? sizeof(struct rtl8187b_tx_hdr) :
 189                                           sizeof(struct rtl8187_tx_hdr));
 190         ieee80211_tx_info_clear_status(info);
 191
 192         if (!urb->status &&
 193             !(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
 194             priv->is_rtl8187b) {
 195                 skb_queue_tail(&priv->b_tx_status.queue, skb);
 196
 197                 /* queue is "full", discard last items */
 198                 while (skb_queue_len(&priv->b_tx_status.queue) > 5) {
 199                         struct sk_buff *old_skb;
 200
 201                         dev_dbg(&priv->udev->dev,
 202                                 "transmit status queue full\n");
 203
 204                         old_skb = skb_dequeue(&priv->b_tx_status.queue);
 205                         ieee80211_tx_status_irqsafe(hw, old_skb);
 206                 }
 207         } else {
 208                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !urb->status)
 209                         info->flags |= IEEE80211_TX_STAT_ACK;
 210                 ieee80211_tx_status_irqsafe(hw, skb);
 211         }
 212 }
 213
 214 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 215 {
 216         struct rtl8187_priv *priv = dev->priv;
 217         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 218         unsigned int ep;
 219         void *buf;
 220         struct urb *urb;
 221         __le16 rts_dur = 0;
 222         u32 flags;
 223         int rc;
 224
 225         urb = usb_alloc_urb(0, GFP_ATOMIC);
 226         if (!urb) {
 227                 kfree_skb(skb);
 228                 return NETDEV_TX_OK;
 229         }
 230
 231         flags = skb->len;
 232         flags |= RTL818X_TX_DESC_FLAG_NO_ENC;
 233
 234         flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
 235         if (ieee80211_has_morefrags(((struct ieee80211_hdr *)skb->data)->frame_control))
 236                 flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
 237         if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 238                 flags |= RTL818X_TX_DESC_FLAG_RTS;
 239                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 240                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 241                                                  skb->len, info);
 242         } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 243                 flags |= RTL818X_TX_DESC_FLAG_CTS;
 244                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 245         }
 246
 247         if (!priv->is_rtl8187b) {
 248                 struct rtl8187_tx_hdr *hdr =
 249                         (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 250                 hdr->flags = cpu_to_le32(flags);
 251                 hdr->len = 0;
 252                 hdr->rts_duration = rts_dur;
 253                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
 254                 buf = hdr;
 255
 256                 ep = 2;
 257         } else {
 258                 /* fc needs to be calculated before skb_push() */
 259                 unsigned int epmap[4] = { 6, 7, 5, 4 };
 260                 struct ieee80211_hdr *tx_hdr =
 261                         (struct ieee80211_hdr *)(skb->data);
 262                 u16 fc = le16_to_cpu(tx_hdr->frame_control);
 263
 264                 struct rtl8187b_tx_hdr *hdr =
 265                         (struct rtl8187b_tx_hdr *)skb_push(skb, sizeof(*hdr));
 266                 struct ieee80211_rate *txrate =
 267                         ieee80211_get_tx_rate(dev, info);
 268                 memset(hdr, 0, sizeof(*hdr));
 269                 hdr->flags = cpu_to_le32(flags);
 270                 hdr->rts_duration = rts_dur;
 271                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
 272                 hdr->tx_duration =
 273                         ieee80211_generic_frame_duration(dev, priv->vif,
 274                                                          skb->len, txrate);
 275                 buf = hdr;
 276
 277                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
 278                         ep = 12;
 279                 else
 280                         ep = epmap[skb_get_queue_mapping(skb)];
 281         }
 282
 283         info->rate_driver_data[0] = dev;
 284         info->rate_driver_data[1] = urb;
 285
 286         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, ep),
 287                           buf, skb->len, rtl8187_tx_cb, skb);
 288         urb->transfer_flags |= URB_ZERO_PACKET;
 289         usb_anchor_urb(urb, &priv->anchored);
 290         rc = usb_submit_urb(urb, GFP_ATOMIC);
 291         if (rc < 0) {
 292                 usb_unanchor_urb(urb);
 293                 kfree_skb(skb);
 294         }
 295         usb_free_urb(urb);
 296
 297         return NETDEV_TX_OK;
 298 }
 299
 300 static void rtl8187_rx_cb(struct urb *urb)
 301 {
 302         struct sk_buff *skb = (struct sk_buff *)urb->context;
 303         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 304         struct ieee80211_hw *dev = info->dev;
 305         struct rtl8187_priv *priv = dev->priv;
 306         struct ieee80211_rx_status rx_status = { 0 };
 307         int rate, signal;
 308         u32 flags;
 309         u32 quality;
 310         unsigned long f;
 311
 312         spin_lock_irqsave(&priv->rx_queue.lock, f);
 313         if (skb->next)
 314                 __skb_unlink(skb, &priv->rx_queue);
 315         else {
 316                 spin_unlock_irqrestore(&priv->rx_queue.lock, f);
 317                 return;
 318         }
 319         spin_unlock_irqrestore(&priv->rx_queue.lock, f);
 320         skb_put(skb, urb->actual_length);
 321
 322         if (unlikely(urb->status)) {
 323                 dev_kfree_skb_irq(skb);
 324                 return;
 325         }
 326
 327         if (!priv->is_rtl8187b) {
 328                 struct rtl8187_rx_hdr *hdr =
 329                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
 330                 flags = le32_to_cpu(hdr->flags);
 331                 /* As with the RTL8187B below, the AGC is used to calculate
 332                  * signal strength and quality. In this case, the scaling
 333                  * constants are derived from the output of p54usb.
 334                  */
 335                 quality = 130 - ((41 * hdr->agc) >> 6);
 336                 signal = -4 - ((27 * hdr->agc) >> 6);
 337                 rx_status.antenna = (hdr->signal >> 7) & 1;
 338                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 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                 signal = 14 - hdr->agc / 2;
 357                 rx_status.antenna = (hdr->rssi >> 7) & 1;
 358                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 359         }
 360
 361         if (quality > 100)
 362                 quality = 100;
 363         rx_status.qual = quality;
 364         priv->quality = quality;
 365         rx_status.signal = signal;
 366         priv->signal = signal;
 367         rate = (flags >> 20) & 0xF;
 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                 /* TODO check rx queue length and refill *somewhere* */
 380                 return;
 381         }
 382
 383         info = (struct rtl8187_rx_info *)skb->cb;
 384         info->urb = urb;
 385         info->dev = dev;
 386         urb->transfer_buffer = skb_tail_pointer(skb);
 387         urb->context = skb;
 388         skb_queue_tail(&priv->rx_queue, skb);
 389
 390         usb_anchor_urb(urb, &priv->anchored);
 391         if (usb_submit_urb(urb, GFP_ATOMIC)) {
 392                 usb_unanchor_urb(urb);
 393                 skb_unlink(skb, &priv->rx_queue);
 394                 dev_kfree_skb_irq(skb);
 395         }
 396 }
 397
 398 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 399 {
 400         struct rtl8187_priv *priv = dev->priv;
 401         struct urb *entry = NULL;
 402         struct sk_buff *skb;
 403         struct rtl8187_rx_info *info;
 404         int ret = 0;
 405
 406         while (skb_queue_len(&priv->rx_queue) < 8) {
 407                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 408                 if (!skb) {
 409                         ret = -ENOMEM;
 410                         goto err;
 411                 }
 412                 entry = usb_alloc_urb(0, GFP_KERNEL);
 413                 if (!entry) {
 414                         ret = -ENOMEM;
 415                         goto err;
 416                 }
 417                 usb_fill_bulk_urb(entry, priv->udev,
 418                                   usb_rcvbulkpipe(priv->udev,
 419                                   priv->is_rtl8187b ? 3 : 1),
 420                                   skb_tail_pointer(skb),
 421                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 422                 info = (struct rtl8187_rx_info *)skb->cb;
 423                 info->urb = entry;
 424                 info->dev = dev;
 425                 skb_queue_tail(&priv->rx_queue, skb);
 426                 usb_anchor_urb(entry, &priv->anchored);
 427                 ret = usb_submit_urb(entry, GFP_KERNEL);
 428                 if (ret) {
 429                         skb_unlink(skb, &priv->rx_queue);
 430                         usb_unanchor_urb(entry);
 431                         goto err;
 432                 }
 433                 usb_free_urb(entry);
 434         }
 435         return ret;
 436
 437 err:
 438         usb_free_urb(entry);
 439         kfree_skb(skb);
 440         usb_kill_anchored_urbs(&priv->anchored);
 441         return ret;
 442 }
 443
 444 static void rtl8187b_status_cb(struct urb *urb)
 445 {
 446         struct ieee80211_hw *hw = (struct ieee80211_hw *)urb->context;
 447         struct rtl8187_priv *priv = hw->priv;
 448         u64 val;
 449         unsigned int cmd_type;
 450
 451         if (unlikely(urb->status))
 452                 return;
 453
 454         /*
 455          * Read from status buffer:
 456          *
 457          * bits [30:31] = cmd type:
 458          * - 0 indicates tx beacon interrupt
 459          * - 1 indicates tx close descriptor
 460          *
 461          * In the case of tx beacon interrupt:
 462          * [0:9] = Last Beacon CW
 463          * [10:29] = reserved
 464          * [30:31] = 00b
 465          * [32:63] = Last Beacon TSF
 466          *
 467          * If it's tx close descriptor:
 468          * [0:7] = Packet Retry Count
 469          * [8:14] = RTS Retry Count
 470          * [15] = TOK
 471          * [16:27] = Sequence No
 472          * [28] = LS
 473          * [29] = FS
 474          * [30:31] = 01b
 475          * [32:47] = unused (reserved?)
 476          * [48:63] = MAC Used Time
 477          */
 478         val = le64_to_cpu(priv->b_tx_status.buf);
 479
 480         cmd_type = (val >> 30) & 0x3;
 481         if (cmd_type == 1) {
 482                 unsigned int pkt_rc, seq_no;
 483                 bool tok;
 484                 struct sk_buff *skb;
 485                 struct ieee80211_hdr *ieee80211hdr;
 486                 unsigned long flags;
 487
 488                 pkt_rc = val & 0xFF;
 489                 tok = val & (1 << 15);
 490                 seq_no = (val >> 16) & 0xFFF;
 491
 492                 spin_lock_irqsave(&priv->b_tx_status.queue.lock, flags);
 493                 skb_queue_reverse_walk(&priv->b_tx_status.queue, skb) {
 494                         ieee80211hdr = (struct ieee80211_hdr *)skb->data;
 495
 496                         /*
 497                          * While testing, it was discovered that the seq_no
 498                          * doesn't actually contains the sequence number.
 499                          * Instead of returning just the 12 bits of sequence
 500                          * number, hardware is returning entire sequence control
 501                          * (fragment number plus sequence number) in a 12 bit
 502                          * only field overflowing after some time. As a
 503                          * workaround, just consider the lower bits, and expect
 504                          * it's unlikely we wrongly ack some sent data
 505                          */
 506                         if ((le16_to_cpu(ieee80211hdr->seq_ctrl)
 507                             & 0xFFF) == seq_no)
 508                                 break;
 509                 }
 510                 if (skb != (struct sk_buff *) &priv->b_tx_status.queue) {
 511                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 512
 513                         __skb_unlink(skb, &priv->b_tx_status.queue);
 514                         if (tok)
 515                                 info->flags |= IEEE80211_TX_STAT_ACK;
 516                         info->status.rates[0].count = pkt_rc + 1;
 517
 518                         ieee80211_tx_status_irqsafe(hw, skb);
 519                 }
 520                 spin_unlock_irqrestore(&priv->b_tx_status.queue.lock, flags);
 521         }
 522
 523         usb_anchor_urb(urb, &priv->anchored);
 524         if (usb_submit_urb(urb, GFP_ATOMIC))
 525                 usb_unanchor_urb(urb);
 526 }
 527
 528 static int rtl8187b_init_status_urb(struct ieee80211_hw *dev)
 529 {
 530         struct rtl8187_priv *priv = dev->priv;
 531         struct urb *entry;
 532         int ret = 0;
 533
 534         entry = usb_alloc_urb(0, GFP_KERNEL);
 535         if (!entry)
 536                 return -ENOMEM;
 537
 538         usb_fill_bulk_urb(entry, priv->udev, usb_rcvbulkpipe(priv->udev, 9),
 539                           &priv->b_tx_status.buf, sizeof(priv->b_tx_status.buf),
 540                           rtl8187b_status_cb, dev);
 541
 542         usb_anchor_urb(entry, &priv->anchored);
 543         ret = usb_submit_urb(entry, GFP_KERNEL);
 544         if (ret)
 545                 usb_unanchor_urb(entry);
 546         usb_free_urb(entry);
 547
 548         return ret;
 549 }
 550
 551 static int rtl8187_cmd_reset(struct ieee80211_hw *dev)
 552 {
 553         struct rtl8187_priv *priv = dev->priv;
 554         u8 reg;
 555         int i;
 556
 557         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 558         reg &= (1 << 1);
 559         reg |= RTL818X_CMD_RESET;
 560         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 561
 562         i = 10;
 563         do {
 564                 msleep(2);
 565                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 566                       RTL818X_CMD_RESET))
 567                         break;
 568         } while (--i);
 569
 570         if (!i) {
 571                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 572                 return -ETIMEDOUT;
 573         }
 574
 575         /* reload registers from eeprom */
 576         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 577
 578         i = 10;
 579         do {
 580                 msleep(4);
 581                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 582                       RTL818X_EEPROM_CMD_CONFIG))
 583                         break;
 584         } while (--i);
 585
 586         if (!i) {
 587                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 588                        wiphy_name(dev->wiphy));
 589                 return -ETIMEDOUT;
 590         }
 591
 592         return 0;
 593 }
 594
 595 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 596 {
 597         struct rtl8187_priv *priv = dev->priv;
 598         u8 reg;
 599         int res;
 600
 601         /* reset */
 602         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 603                          RTL818X_EEPROM_CMD_CONFIG);
 604         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 605         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg |
 606                          RTL818X_CONFIG3_ANAPARAM_WRITE);
 607         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
 608                           RTL8187_RTL8225_ANAPARAM_ON);
 609         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
 610                           RTL8187_RTL8225_ANAPARAM2_ON);
 611         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg &
 612                          ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 613         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 614                          RTL818X_EEPROM_CMD_NORMAL);
 615
 616         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 617
 618         msleep(200);
 619         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 620         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 621         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 622         msleep(200);
 623
 624         res = rtl8187_cmd_reset(dev);
 625         if (res)
 626                 return res;
 627
 628         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 629         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 630         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 631                         reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 632         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
 633                           RTL8187_RTL8225_ANAPARAM_ON);
 634         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
 635                           RTL8187_RTL8225_ANAPARAM2_ON);
 636         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 637                         reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 638         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 639
 640         /* setup card */
 641         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 642         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 643
 644         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 645         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 646         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 647
 648         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 649
 650         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 651         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 652         reg &= 0x3F;
 653         reg |= 0x80;
 654         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 655
 656         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 657
 658         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 659         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 660         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 661
 662         // TODO: set RESP_RATE and BRSR properly
 663         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 664         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 665
 666         /* host_usb_init */
 667         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 668         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 669         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 670         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 671         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 672         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 673         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 674         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 675         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 676         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 677         msleep(100);
 678
 679         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 680         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 681         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 682         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 683                          RTL818X_EEPROM_CMD_CONFIG);
 684         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 685         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 686                          RTL818X_EEPROM_CMD_NORMAL);
 687         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 688         msleep(100);
 689
 690         priv->rf->init(dev);
 691
 692         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 693         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 694         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 695         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 696         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 697         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 698         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 699
 700         return 0;
 701 }
 702
 703 static const u8 rtl8187b_reg_table[][3] = {
 704         {0xF0, 0x32, 0}, {0xF1, 0x32, 0}, {0xF2, 0x00, 0}, {0xF3, 0x00, 0},
 705         {0xF4, 0x32, 0}, {0xF5, 0x43, 0}, {0xF6, 0x00, 0}, {0xF7, 0x00, 0},
 706         {0xF8, 0x46, 0}, {0xF9, 0xA4, 0}, {0xFA, 0x00, 0}, {0xFB, 0x00, 0},
 707         {0xFC, 0x96, 0}, {0xFD, 0xA4, 0}, {0xFE, 0x00, 0}, {0xFF, 0x00, 0},
 708
 709         {0x58, 0x4B, 1}, {0x59, 0x00, 1}, {0x5A, 0x4B, 1}, {0x5B, 0x00, 1},
 710         {0x60, 0x4B, 1}, {0x61, 0x09, 1}, {0x62, 0x4B, 1}, {0x63, 0x09, 1},
 711         {0xCE, 0x0F, 1}, {0xCF, 0x00, 1}, {0xE0, 0xFF, 1}, {0xE1, 0x0F, 1},
 712         {0xE2, 0x00, 1}, {0xF0, 0x4E, 1}, {0xF1, 0x01, 1}, {0xF2, 0x02, 1},
 713         {0xF3, 0x03, 1}, {0xF4, 0x04, 1}, {0xF5, 0x05, 1}, {0xF6, 0x06, 1},
 714         {0xF7, 0x07, 1}, {0xF8, 0x08, 1},
 715
 716         {0x4E, 0x00, 2}, {0x0C, 0x04, 2}, {0x21, 0x61, 2}, {0x22, 0x68, 2},
 717         {0x23, 0x6F, 2}, {0x24, 0x76, 2}, {0x25, 0x7D, 2}, {0x26, 0x84, 2},
 718         {0x27, 0x8D, 2}, {0x4D, 0x08, 2}, {0x50, 0x05, 2}, {0x51, 0xF5, 2},
 719         {0x52, 0x04, 2}, {0x53, 0xA0, 2}, {0x54, 0x1F, 2}, {0x55, 0x23, 2},
 720         {0x56, 0x45, 2}, {0x57, 0x67, 2}, {0x58, 0x08, 2}, {0x59, 0x08, 2},
 721         {0x5A, 0x08, 2}, {0x5B, 0x08, 2}, {0x60, 0x08, 2}, {0x61, 0x08, 2},
 722         {0x62, 0x08, 2}, {0x63, 0x08, 2}, {0x64, 0xCF, 2}, {0x72, 0x56, 2},
 723         {0x73, 0x9A, 2},
 724
 725         {0x34, 0xF0, 0}, {0x35, 0x0F, 0}, {0x5B, 0x40, 0}, {0x84, 0x88, 0},
 726         {0x85, 0x24, 0}, {0x88, 0x54, 0}, {0x8B, 0xB8, 0}, {0x8C, 0x07, 0},
 727         {0x8D, 0x00, 0}, {0x94, 0x1B, 0}, {0x95, 0x12, 0}, {0x96, 0x00, 0},
 728         {0x97, 0x06, 0}, {0x9D, 0x1A, 0}, {0x9F, 0x10, 0}, {0xB4, 0x22, 0},
 729         {0xBE, 0x80, 0}, {0xDB, 0x00, 0}, {0xEE, 0x00, 0}, {0x91, 0x03, 0},
 730
 731         {0x4C, 0x00, 2}, {0x9F, 0x00, 3}, {0x8C, 0x01, 0}, {0x8D, 0x10, 0},
 732         {0x8E, 0x08, 0}, {0x8F, 0x00, 0}
 733 };
 734
 735 static int rtl8187b_init_hw(struct ieee80211_hw *dev)
 736 {
 737         struct rtl8187_priv *priv = dev->priv;
 738         int res, i;
 739         u8 reg;
 740
 741         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 742                          RTL818X_EEPROM_CMD_CONFIG);
 743
 744         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 745         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE | RTL818X_CONFIG3_GNT_SELECT;
 746         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 747         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
 748                           RTL8187B_RTL8225_ANAPARAM2_ON);
 749         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
 750                           RTL8187B_RTL8225_ANAPARAM_ON);
 751         rtl818x_iowrite8(priv, &priv->map->ANAPARAM3,
 752                          RTL8187B_RTL8225_ANAPARAM3_ON);
 753
 754         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0x10);
 755         reg = rtl818x_ioread8(priv, (u8 *)0xFF62);
 756         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg & ~(1 << 5));
 757         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg | (1 << 5));
 758
 759         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 760         reg &= ~RTL818X_CONFIG3_ANAPARAM_WRITE;
 761         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 762
 763         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 764                          RTL818X_EEPROM_CMD_NORMAL);
 765
 766         res = rtl8187_cmd_reset(dev);
 767         if (res)
 768                 return res;
 769
 770         rtl818x_iowrite16(priv, (__le16 *)0xFF2D, 0x0FFF);
 771         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 772         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 773         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 774         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 775         reg |= RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT |
 776                RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 777         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 778
 779         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFE0, 0x0FFF, 1);
 780         reg = rtl818x_ioread8(priv, &priv->map->RATE_FALLBACK);
 781         reg |= RTL818X_RATE_FALLBACK_ENABLE;
 782         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, reg);
 783
 784         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 785         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 786         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFD4, 0xFFFF, 1);
 787
 788         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 789                          RTL818X_EEPROM_CMD_CONFIG);
 790         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 791         rtl818x_iowrite8(priv, &priv->map->CONFIG1, (reg & 0x3F) | 0x80);
 792         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 793                          RTL818X_EEPROM_CMD_NORMAL);
 794
 795         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 796         for (i = 0; i < ARRAY_SIZE(rtl8187b_reg_table); i++) {
 797                 rtl818x_iowrite8_idx(priv,
 798                                      (u8 *)(uintptr_t)
 799                                      (rtl8187b_reg_table[i][0] | 0xFF00),
 800                                      rtl8187b_reg_table[i][1],
 801                                      rtl8187b_reg_table[i][2]);
 802         }
 803
 804         rtl818x_iowrite16(priv, &priv->map->TID_AC_MAP, 0xFA50);
 805         rtl818x_iowrite16(priv, &priv->map->INT_MIG, 0);
 806
 807         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF0, 0, 1);
 808         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF4, 0, 1);
 809         rtl818x_iowrite8_idx(priv, (u8 *)0xFFF8, 0, 1);
 810
 811         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x00004001);
 812
 813         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x569A, 2);
 814
 815         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 816                          RTL818X_EEPROM_CMD_CONFIG);
 817         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 818         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE;
 819         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 820         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 821                          RTL818X_EEPROM_CMD_NORMAL);
 822
 823         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x0480);
 824         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x2488);
 825         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FFF);
 826         msleep(100);
 827
 828         priv->rf->init(dev);
 829
 830         reg = RTL818X_CMD_TX_ENABLE | RTL818X_CMD_RX_ENABLE;
 831         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 832         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 833
 834         rtl818x_iowrite8(priv, (u8 *)0xFE41, 0xF4);
 835         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x00);
 836         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 837         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 838         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x0F);
 839         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 840         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 841
 842         reg = rtl818x_ioread8(priv, (u8 *)0xFFDB);
 843         rtl818x_iowrite8(priv, (u8 *)0xFFDB, reg | (1 << 2));
 844         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x59FA, 3);
 845         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF74, 0x59D2, 3);
 846         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF76, 0x59D2, 3);
 847         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF78, 0x19FA, 3);
 848         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7A, 0x19FA, 3);
 849         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7C, 0x00D0, 3);
 850         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0);
 851         rtl818x_iowrite8_idx(priv, (u8 *)0xFF80, 0x0F, 1);
 852         rtl818x_iowrite8_idx(priv, (u8 *)0xFF83, 0x03, 1);
 853         rtl818x_iowrite8(priv, (u8 *)0xFFDA, 0x10);
 854         rtl818x_iowrite8_idx(priv, (u8 *)0xFF4D, 0x08, 2);
 855
 856         rtl818x_iowrite32(priv, &priv->map->HSSI_PARA, 0x0600321B);
 857
 858         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFEC, 0x0800, 1);
 859
 860         priv->slot_time = 0x9;
 861         priv->aifsn[0] = 2; /* AIFSN[AC_VO] */
 862         priv->aifsn[1] = 2; /* AIFSN[AC_VI] */
 863         priv->aifsn[2] = 7; /* AIFSN[AC_BK] */
 864         priv->aifsn[3] = 3; /* AIFSN[AC_BE] */
 865         rtl818x_iowrite8(priv, &priv->map->ACM_CONTROL, 0);
 866
 867         return 0;
 868 }
 869
 870 static int rtl8187_start(struct ieee80211_hw *dev)
 871 {
 872         struct rtl8187_priv *priv = dev->priv;
 873         u32 reg;
 874         int ret;
 875
 876         ret = (!priv->is_rtl8187b) ? rtl8187_init_hw(dev) :
 877                                      rtl8187b_init_hw(dev);
 878         if (ret)
 879                 return ret;
 880
 881         mutex_lock(&priv->conf_mutex);
 882
 883         init_usb_anchor(&priv->anchored);
 884
 885         if (priv->is_rtl8187b) {
 886                 reg = RTL818X_RX_CONF_MGMT |
 887                       RTL818X_RX_CONF_DATA |
 888                       RTL818X_RX_CONF_BROADCAST |
 889                       RTL818X_RX_CONF_NICMAC |
 890                       RTL818X_RX_CONF_BSSID |
 891                       (7 << 13 /* RX FIFO threshold NONE */) |
 892                       (7 << 10 /* MAX RX DMA */) |
 893                       RTL818X_RX_CONF_RX_AUTORESETPHY |
 894                       RTL818X_RX_CONF_ONLYERLPKT |
 895                       RTL818X_RX_CONF_MULTICAST;
 896                 priv->rx_conf = reg;
 897                 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 898
 899                 rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 900                                   RTL818X_TX_CONF_HW_SEQNUM |
 901                                   RTL818X_TX_CONF_DISREQQSIZE |
 902                                   (7 << 8  /* short retry limit */) |
 903                                   (7 << 0  /* long retry limit */) |
 904                                   (7 << 21 /* MAX TX DMA */));
 905                 rtl8187_init_urbs(dev);
 906                 rtl8187b_init_status_urb(dev);
 907                 mutex_unlock(&priv->conf_mutex);
 908                 return 0;
 909         }
 910
 911         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 912
 913         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 914         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 915
 916         rtl8187_init_urbs(dev);
 917
 918         reg = RTL818X_RX_CONF_ONLYERLPKT |
 919               RTL818X_RX_CONF_RX_AUTORESETPHY |
 920               RTL818X_RX_CONF_BSSID |
 921               RTL818X_RX_CONF_MGMT |
 922               RTL818X_RX_CONF_DATA |
 923               (7 << 13 /* RX FIFO threshold NONE */) |
 924               (7 << 10 /* MAX RX DMA */) |
 925               RTL818X_RX_CONF_BROADCAST |
 926               RTL818X_RX_CONF_NICMAC;
 927
 928         priv->rx_conf = reg;
 929         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 930
 931         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 932         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 933         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 934         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 935
 936         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 937         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 938         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 939         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 940         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 941
 942         reg  = RTL818X_TX_CONF_CW_MIN |
 943                (7 << 21 /* MAX TX DMA */) |
 944                RTL818X_TX_CONF_NO_ICV;
 945         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 946
 947         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 948         reg |= RTL818X_CMD_TX_ENABLE;
 949         reg |= RTL818X_CMD_RX_ENABLE;
 950         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 951         mutex_unlock(&priv->conf_mutex);
 952
 953         return 0;
 954 }
 955
 956 static void rtl8187_stop(struct ieee80211_hw *dev)
 957 {
 958         struct rtl8187_priv *priv = dev->priv;
 959         struct sk_buff *skb;
 960         u32 reg;
 961
 962         mutex_lock(&priv->conf_mutex);
 963         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 964
 965         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 966         reg &= ~RTL818X_CMD_TX_ENABLE;
 967         reg &= ~RTL818X_CMD_RX_ENABLE;
 968         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 969
 970         priv->rf->stop(dev);
 971
 972         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 973         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 974         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 975         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 976
 977         while ((skb = skb_dequeue(&priv->b_tx_status.queue)))
 978                 dev_kfree_skb_any(skb);
 979
 980         usb_kill_anchored_urbs(&priv->anchored);
 981         mutex_unlock(&priv->conf_mutex);
 982 }
 983
 984 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 985                                  struct ieee80211_if_init_conf *conf)
 986 {
 987         struct rtl8187_priv *priv = dev->priv;
 988         int i;
 989
 990         if (priv->mode != NL80211_IFTYPE_MONITOR)
 991                 return -EOPNOTSUPP;
 992
 993         switch (conf->type) {
 994         case NL80211_IFTYPE_STATION:
 995                 priv->mode = conf->type;
 996                 break;
 997         default:
 998                 return -EOPNOTSUPP;
 999         }
1000
1001         mutex_lock(&priv->conf_mutex);
1002         priv->vif = conf->vif;
1003
1004         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1005         for (i = 0; i < ETH_ALEN; i++)
1006                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
1007                                  ((u8 *)conf->mac_addr)[i]);
1008         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1009
1010         mutex_unlock(&priv->conf_mutex);
1011         return 0;
1012 }
1013
1014 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
1015                                      struct ieee80211_if_init_conf *conf)
1016 {
1017         struct rtl8187_priv *priv = dev->priv;
1018         mutex_lock(&priv->conf_mutex);
1019         priv->mode = NL80211_IFTYPE_MONITOR;
1020         priv->vif = NULL;
1021         mutex_unlock(&priv->conf_mutex);
1022 }
1023
1024 static int rtl8187_config(struct ieee80211_hw *dev, u32 changed)
1025 {
1026         struct rtl8187_priv *priv = dev->priv;
1027         struct ieee80211_conf *conf = &dev->conf;
1028         u32 reg;
1029
1030         mutex_lock(&priv->conf_mutex);
1031         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1032         /* Enable TX loopback on MAC level to avoid TX during channel
1033          * changes, as this has be seen to causes problems and the
1034          * card will stop work until next reset
1035          */
1036         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
1037                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
1038         priv->rf->set_chan(dev, conf);
1039         msleep(10);
1040         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
1041
1042         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
1043         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
1044         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
1045         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
1046         mutex_unlock(&priv->conf_mutex);
1047         return 0;
1048 }
1049
1050 static int rtl8187_config_interface(struct ieee80211_hw *dev,
1051                                     struct ieee80211_vif *vif,
1052                                     struct ieee80211_if_conf *conf)
1053 {
1054         struct rtl8187_priv *priv = dev->priv;
1055         int i;
1056         u8 reg;
1057
1058         mutex_lock(&priv->conf_mutex);
1059         for (i = 0; i < ETH_ALEN; i++)
1060                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
1061
1062         if (is_valid_ether_addr(conf->bssid)) {
1063                 reg = RTL818X_MSR_INFRA;
1064                 if (priv->is_rtl8187b)
1065                         reg |= RTL818X_MSR_ENEDCA;
1066                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1067         } else {
1068                 reg = RTL818X_MSR_NO_LINK;
1069                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1070         }
1071
1072         mutex_unlock(&priv->conf_mutex);
1073         return 0;
1074 }
1075
1076 /*
1077  * With 8187B, AC_*_PARAM clashes with FEMR definition in struct rtl818x_csr for
1078  * example. Thus we have to use raw values for AC_*_PARAM register addresses.
1079  */
1080 static __le32 *rtl8187b_ac_addr[4] = {
1081         (__le32 *) 0xFFF0, /* AC_VO */
1082         (__le32 *) 0xFFF4, /* AC_VI */
1083         (__le32 *) 0xFFFC, /* AC_BK */
1084         (__le32 *) 0xFFF8, /* AC_BE */
1085 };
1086
1087 #define SIFS_TIME 0xa
1088
1089 static void rtl8187_conf_erp(struct rtl8187_priv *priv, bool use_short_slot,
1090                              bool use_short_preamble)
1091 {
1092         if (priv->is_rtl8187b) {
1093                 u8 difs, eifs;
1094                 u16 ack_timeout;
1095                 int queue;
1096
1097                 if (use_short_slot) {
1098                         priv->slot_time = 0x9;
1099                         difs = 0x1c;
1100                         eifs = 0x53;
1101                 } else {
1102                         priv->slot_time = 0x14;
1103                         difs = 0x32;
1104                         eifs = 0x5b;
1105                 }
1106                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1107                 rtl818x_iowrite8(priv, &priv->map->SLOT, priv->slot_time);
1108                 rtl818x_iowrite8(priv, &priv->map->DIFS, difs);
1109
1110                 /*
1111                  * BRSR+1 on 8187B is in fact EIFS register
1112                  * Value in units of 4 us
1113                  */
1114                 rtl818x_iowrite8(priv, (u8 *)&priv->map->BRSR + 1, eifs);
1115
1116                 /*
1117                  * For 8187B, CARRIER_SENSE_COUNTER is in fact ack timeout
1118                  * register. In units of 4 us like eifs register
1119                  * ack_timeout = ack duration + plcp + difs + preamble
1120                  */
1121                 ack_timeout = 112 + 48 + difs;
1122                 if (use_short_preamble)
1123                         ack_timeout += 72;
1124                 else
1125                         ack_timeout += 144;
1126                 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER,
1127                                  DIV_ROUND_UP(ack_timeout, 4));
1128
1129                 for (queue = 0; queue < 4; queue++)
1130                         rtl818x_iowrite8(priv, (u8 *) rtl8187b_ac_addr[queue],
1131                                          priv->aifsn[queue] * priv->slot_time +
1132                                          SIFS_TIME);
1133         } else {
1134                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1135                 if (use_short_slot) {
1136                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
1137                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
1138                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
1139                 } else {
1140                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
1141                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
1142                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
1143                 }
1144         }
1145 }
1146
1147 static void rtl8187_bss_info_changed(struct ieee80211_hw *dev,
1148                                      struct ieee80211_vif *vif,
1149                                      struct ieee80211_bss_conf *info,
1150                                      u32 changed)
1151 {
1152         struct rtl8187_priv *priv = dev->priv;
1153
1154         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE))
1155                 rtl8187_conf_erp(priv, info->use_short_slot,
1156                                  info->use_short_preamble);
1157 }
1158
1159 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
1160                                      unsigned int changed_flags,
1161                                      unsigned int *total_flags,
1162                                      int mc_count, struct dev_addr_list *mclist)
1163 {
1164         struct rtl8187_priv *priv = dev->priv;
1165
1166         if (changed_flags & FIF_FCSFAIL)
1167                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
1168         if (changed_flags & FIF_CONTROL)
1169                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
1170         if (changed_flags & FIF_OTHER_BSS)
1171                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
1172         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
1173                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
1174         else
1175                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
1176
1177         *total_flags = 0;
1178
1179         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
1180                 *total_flags |= FIF_FCSFAIL;
1181         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
1182                 *total_flags |= FIF_CONTROL;
1183         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
1184                 *total_flags |= FIF_OTHER_BSS;
1185         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
1186                 *total_flags |= FIF_ALLMULTI;
1187
1188         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
1189 }
1190
1191 static int rtl8187_conf_tx(struct ieee80211_hw *dev, u16 queue,
1192                            const struct ieee80211_tx_queue_params *params)
1193 {
1194         struct rtl8187_priv *priv = dev->priv;
1195         u8 cw_min, cw_max;
1196
1197         if (queue > 3)
1198                 return -EINVAL;
1199
1200         cw_min = fls(params->cw_min);
1201         cw_max = fls(params->cw_max);
1202
1203         if (priv->is_rtl8187b) {
1204                 priv->aifsn[queue] = params->aifs;
1205
1206                 /*
1207                  * This is the structure of AC_*_PARAM registers in 8187B:
1208                  * - TXOP limit field, bit offset = 16
1209                  * - ECWmax, bit offset = 12
1210                  * - ECWmin, bit offset = 8
1211                  * - AIFS, bit offset = 0
1212                  */
1213                 rtl818x_iowrite32(priv, rtl8187b_ac_addr[queue],
1214                                   (params->txop << 16) | (cw_max << 12) |
1215                                   (cw_min << 8) | (params->aifs *
1216                                   priv->slot_time + SIFS_TIME));
1217         } else {
1218                 if (queue != 0)
1219                         return -EINVAL;
1220
1221                 rtl818x_iowrite8(priv, &priv->map->CW_VAL,
1222                                  cw_min | (cw_max << 4));
1223         }
1224         return 0;
1225 }
1226
1227 static const struct ieee80211_ops rtl8187_ops = {
1228         .tx                     = rtl8187_tx,
1229         .start                  = rtl8187_start,
1230         .stop                   = rtl8187_stop,
1231         .add_interface          = rtl8187_add_interface,
1232         .remove_interface       = rtl8187_remove_interface,
1233         .config                 = rtl8187_config,
1234         .config_interface       = rtl8187_config_interface,
1235         .bss_info_changed       = rtl8187_bss_info_changed,
1236         .configure_filter       = rtl8187_configure_filter,
1237         .conf_tx                = rtl8187_conf_tx
1238 };
1239
1240 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
1241 {
1242         struct ieee80211_hw *dev = eeprom->data;
1243         struct rtl8187_priv *priv = dev->priv;
1244         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1245
1246         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
1247         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
1248         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
1249         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
1250 }
1251
1252 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
1253 {
1254         struct ieee80211_hw *dev = eeprom->data;
1255         struct rtl8187_priv *priv = dev->priv;
1256         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
1257
1258         if (eeprom->reg_data_in)
1259                 reg |= RTL818X_EEPROM_CMD_WRITE;
1260         if (eeprom->reg_data_out)
1261                 reg |= RTL818X_EEPROM_CMD_READ;
1262         if (eeprom->reg_data_clock)
1263                 reg |= RTL818X_EEPROM_CMD_CK;
1264         if (eeprom->reg_chip_select)
1265                 reg |= RTL818X_EEPROM_CMD_CS;
1266
1267         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
1268         udelay(10);
1269 }
1270
1271 static int __devinit rtl8187_probe(struct usb_interface *intf,
1272                                    const struct usb_device_id *id)
1273 {
1274         struct usb_device *udev = interface_to_usbdev(intf);
1275         struct ieee80211_hw *dev;
1276         struct rtl8187_priv *priv;
1277         struct eeprom_93cx6 eeprom;
1278         struct ieee80211_channel *channel;
1279         const char *chip_name;
1280         u16 txpwr, reg;
1281         int err, i;
1282
1283         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
1284         if (!dev) {
1285                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
1286                 return -ENOMEM;
1287         }
1288
1289         priv = dev->priv;
1290         priv->is_rtl8187b = (id->driver_info == DEVICE_RTL8187B);
1291
1292         SET_IEEE80211_DEV(dev, &intf->dev);
1293         usb_set_intfdata(intf, dev);
1294         priv->udev = udev;
1295
1296         usb_get_dev(udev);
1297
1298         skb_queue_head_init(&priv->rx_queue);
1299
1300         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
1301         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
1302
1303         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
1304         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
1305         priv->map = (struct rtl818x_csr *)0xFF00;
1306
1307         priv->band.band = IEEE80211_BAND_2GHZ;
1308         priv->band.channels = priv->channels;
1309         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
1310         priv->band.bitrates = priv->rates;
1311         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
1312         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
1313
1314
1315         priv->mode = NL80211_IFTYPE_MONITOR;
1316         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1317                      IEEE80211_HW_SIGNAL_DBM |
1318                      IEEE80211_HW_RX_INCLUDES_FCS;
1319
1320         eeprom.data = dev;
1321         eeprom.register_read = rtl8187_eeprom_register_read;
1322         eeprom.register_write = rtl8187_eeprom_register_write;
1323         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
1324                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
1325         else
1326                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
1327
1328         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1329         udelay(10);
1330
1331         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
1332                                (__le16 __force *)dev->wiphy->perm_addr, 3);
1333         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
1334                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
1335                        "generated MAC address\n");
1336                 random_ether_addr(dev->wiphy->perm_addr);
1337         }
1338
1339         channel = priv->channels;
1340         for (i = 0; i < 3; i++) {
1341                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
1342                                   &txpwr);
1343                 (*channel++).hw_value = txpwr & 0xFF;
1344                 (*channel++).hw_value = txpwr >> 8;
1345         }
1346         for (i = 0; i < 2; i++) {
1347                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
1348                                   &txpwr);
1349                 (*channel++).hw_value = txpwr & 0xFF;
1350                 (*channel++).hw_value = txpwr >> 8;
1351         }
1352
1353         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
1354                           &priv->txpwr_base);
1355
1356         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
1357         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
1358         /* 0 means asic B-cut, we should use SW 3 wire
1359          * bit-by-bit banging for radio. 1 means we can use
1360          * USB specific request to write radio registers */
1361         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
1362         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
1363         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1364
1365         if (!priv->is_rtl8187b) {
1366                 u32 reg32;
1367                 reg32 = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1368                 reg32 &= RTL818X_TX_CONF_HWVER_MASK;
1369                 switch (reg32) {
1370                 case RTL818X_TX_CONF_R8187vD_B:
1371                         /* Some RTL8187B devices have a USB ID of 0x8187
1372                          * detect them here */
1373                         chip_name = "RTL8187BvB(early)";
1374                         priv->is_rtl8187b = 1;
1375                         priv->hw_rev = RTL8187BvB;
1376                         break;
1377                 case RTL818X_TX_CONF_R8187vD:
1378                         chip_name = "RTL8187vD";
1379                         break;
1380                 default:
1381                         chip_name = "RTL8187vB (default)";
1382                 }
1383        } else {
1384                 /*
1385                  * Force USB request to write radio registers for 8187B, Realtek
1386                  * only uses it in their sources
1387                  */
1388                 /*if (priv->asic_rev == 0) {
1389                         printk(KERN_WARNING "rtl8187: Forcing use of USB "
1390                                "requests to write to radio registers\n");
1391                         priv->asic_rev = 1;
1392                 }*/
1393                 switch (rtl818x_ioread8(priv, (u8 *)0xFFE1)) {
1394                 case RTL818X_R8187B_B:
1395                         chip_name = "RTL8187BvB";
1396                         priv->hw_rev = RTL8187BvB;
1397                         break;
1398                 case RTL818X_R8187B_D:
1399                         chip_name = "RTL8187BvD";
1400                         priv->hw_rev = RTL8187BvD;
1401                         break;
1402                 case RTL818X_R8187B_E:
1403                         chip_name = "RTL8187BvE";
1404                         priv->hw_rev = RTL8187BvE;
1405                         break;
1406                 default:
1407                         chip_name = "RTL8187BvB (default)";
1408                         priv->hw_rev = RTL8187BvB;
1409                 }
1410         }
1411
1412         if (!priv->is_rtl8187b) {
1413                 for (i = 0; i < 2; i++) {
1414                         eeprom_93cx6_read(&eeprom,
1415                                           RTL8187_EEPROM_TXPWR_CHAN_6 + i,
1416                                           &txpwr);
1417                         (*channel++).hw_value = txpwr & 0xFF;
1418                         (*channel++).hw_value = txpwr >> 8;
1419                 }
1420         } else {
1421                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6,
1422                                   &txpwr);
1423                 (*channel++).hw_value = txpwr & 0xFF;
1424
1425                 eeprom_93cx6_read(&eeprom, 0x0A, &txpwr);
1426                 (*channel++).hw_value = txpwr & 0xFF;
1427
1428                 eeprom_93cx6_read(&eeprom, 0x1C, &txpwr);
1429                 (*channel++).hw_value = txpwr & 0xFF;
1430                 (*channel++).hw_value = txpwr >> 8;
1431         }
1432
1433         if (priv->is_rtl8187b)
1434                 printk(KERN_WARNING "rtl8187: 8187B chip detected.\n");
1435
1436         /*
1437          * XXX: Once this driver supports anything that requires
1438          *      beacons it must implement IEEE80211_TX_CTL_ASSIGN_SEQ.
1439          */
1440         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1441
1442         if ((id->driver_info == DEVICE_RTL8187) && priv->is_rtl8187b)
1443                 printk(KERN_INFO "rtl8187: inconsistency between id with OEM"
1444                        " info!\n");
1445
1446         priv->rf = rtl8187_detect_rf(dev);
1447         dev->extra_tx_headroom = (!priv->is_rtl8187b) ?
1448                                   sizeof(struct rtl8187_tx_hdr) :
1449                                   sizeof(struct rtl8187b_tx_hdr);
1450         if (!priv->is_rtl8187b)
1451                 dev->queues = 1;
1452         else
1453                 dev->queues = 4;
1454
1455         err = ieee80211_register_hw(dev);
1456         if (err) {
1457                 printk(KERN_ERR "rtl8187: Cannot register device\n");
1458                 goto err_free_dev;
1459         }
1460         mutex_init(&priv->conf_mutex);
1461         skb_queue_head_init(&priv->b_tx_status.queue);
1462
1463         printk(KERN_INFO "%s: hwaddr %pM, %s V%d + %s\n",
1464                wiphy_name(dev->wiphy), dev->wiphy->perm_addr,
1465                chip_name, priv->asic_rev, priv->rf->name);
1466
1467         return 0;
1468
1469  err_free_dev:
1470         ieee80211_free_hw(dev);
1471         usb_set_intfdata(intf, NULL);
1472         usb_put_dev(udev);
1473         return err;
1474 }
1475
1476 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
1477 {
1478         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1479         struct rtl8187_priv *priv;
1480
1481         if (!dev)
1482                 return;
1483
1484         ieee80211_unregister_hw(dev);
1485
1486         priv = dev->priv;
1487         usb_reset_device(priv->udev);
1488         usb_put_dev(interface_to_usbdev(intf));
1489         ieee80211_free_hw(dev);
1490 }
1491
1492 static struct usb_driver rtl8187_driver = {
1493         .name           = KBUILD_MODNAME,
1494         .id_table       = rtl8187_table,
1495         .probe          = rtl8187_probe,
1496         .disconnect     = __devexit_p(rtl8187_disconnect),
1497 };
1498
1499 static int __init rtl8187_init(void)
1500 {
1501         return usb_register(&rtl8187_driver);
1502 }
1503
1504 static void __exit rtl8187_exit(void)
1505 {
1506         usb_deregister(&rtl8187_driver);
1507 }
1508
1509 module_init(rtl8187_init);
1510 module_exit(rtl8187_exit);