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) && !(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 193                 if (priv->is_rtl8187b) {
 194                         skb_queue_tail(&priv->b_tx_status.queue, skb);
 195
 196                         /* queue is "full", discard last items */
 197                         while (skb_queue_len(&priv->b_tx_status.queue) > 5) {
 198                                 struct sk_buff *old_skb;
 199
 200                                 dev_dbg(&priv->udev->dev,
 201                                         "transmit status queue full\n");
 202
 203                                 old_skb = skb_dequeue(&priv->b_tx_status.queue);
 204                                 ieee80211_tx_status_irqsafe(hw, old_skb);
 205                         }
 206                         return;
 207                 } else {
 208                         info->flags |= IEEE80211_TX_STAT_ACK;
 209                 }
 210         }
 211         if (priv->is_rtl8187b)
 212                 ieee80211_tx_status_irqsafe(hw, skb);
 213         else {
 214                 /* Retry information for the RTI8187 is only available by
 215                  * reading a register in the device. We are in interrupt mode
 216                  * here, thus queue the skb and finish on a work queue. */
 217                 skb_queue_tail(&priv->b_tx_status.queue, skb);
 218                 queue_delayed_work(hw->workqueue, &priv->work, 0);
 219         }
 220 }
 221
 222 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 223 {
 224         struct rtl8187_priv *priv = dev->priv;
 225         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 226         unsigned int ep;
 227         void *buf;
 228         struct urb *urb;
 229         __le16 rts_dur = 0;
 230         u32 flags;
 231         int rc;
 232
 233         urb = usb_alloc_urb(0, GFP_ATOMIC);
 234         if (!urb) {
 235                 kfree_skb(skb);
 236                 return NETDEV_TX_OK;
 237         }
 238
 239         flags = skb->len;
 240         flags |= RTL818X_TX_DESC_FLAG_NO_ENC;
 241
 242         flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
 243         if (ieee80211_has_morefrags(((struct ieee80211_hdr *)skb->data)->frame_control))
 244                 flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
 245         if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 246                 flags |= RTL818X_TX_DESC_FLAG_RTS;
 247                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 248                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 249                                                  skb->len, info);
 250         } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 251                 flags |= RTL818X_TX_DESC_FLAG_CTS;
 252                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 253         }
 254
 255         if (!priv->is_rtl8187b) {
 256                 struct rtl8187_tx_hdr *hdr =
 257                         (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 258                 hdr->flags = cpu_to_le32(flags);
 259                 hdr->len = 0;
 260                 hdr->rts_duration = rts_dur;
 261                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
 262                 buf = hdr;
 263
 264                 ep = 2;
 265         } else {
 266                 /* fc needs to be calculated before skb_push() */
 267                 unsigned int epmap[4] = { 6, 7, 5, 4 };
 268                 struct ieee80211_hdr *tx_hdr =
 269                         (struct ieee80211_hdr *)(skb->data);
 270                 u16 fc = le16_to_cpu(tx_hdr->frame_control);
 271
 272                 struct rtl8187b_tx_hdr *hdr =
 273                         (struct rtl8187b_tx_hdr *)skb_push(skb, sizeof(*hdr));
 274                 struct ieee80211_rate *txrate =
 275                         ieee80211_get_tx_rate(dev, info);
 276                 memset(hdr, 0, sizeof(*hdr));
 277                 hdr->flags = cpu_to_le32(flags);
 278                 hdr->rts_duration = rts_dur;
 279                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
 280                 hdr->tx_duration =
 281                         ieee80211_generic_frame_duration(dev, priv->vif,
 282                                                          skb->len, txrate);
 283                 buf = hdr;
 284
 285                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
 286                         ep = 12;
 287                 else
 288                         ep = epmap[skb_get_queue_mapping(skb)];
 289         }
 290
 291         info->rate_driver_data[0] = dev;
 292         info->rate_driver_data[1] = urb;
 293
 294         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, ep),
 295                           buf, skb->len, rtl8187_tx_cb, skb);
 296         urb->transfer_flags |= URB_ZERO_PACKET;
 297         usb_anchor_urb(urb, &priv->anchored);
 298         rc = usb_submit_urb(urb, GFP_ATOMIC);
 299         if (rc < 0) {
 300                 usb_unanchor_urb(urb);
 301                 kfree_skb(skb);
 302         }
 303         usb_free_urb(urb);
 304
 305         return NETDEV_TX_OK;
 306 }
 307
 308 static void rtl8187_rx_cb(struct urb *urb)
 309 {
 310         struct sk_buff *skb = (struct sk_buff *)urb->context;
 311         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 312         struct ieee80211_hw *dev = info->dev;
 313         struct rtl8187_priv *priv = dev->priv;
 314         struct ieee80211_rx_status rx_status = { 0 };
 315         int rate, signal;
 316         u32 flags;
 317         u32 quality;
 318         unsigned long f;
 319
 320         spin_lock_irqsave(&priv->rx_queue.lock, f);
 321         if (skb->next)
 322                 __skb_unlink(skb, &priv->rx_queue);
 323         else {
 324                 spin_unlock_irqrestore(&priv->rx_queue.lock, f);
 325                 return;
 326         }
 327         spin_unlock_irqrestore(&priv->rx_queue.lock, f);
 328         skb_put(skb, urb->actual_length);
 329
 330         if (unlikely(urb->status)) {
 331                 dev_kfree_skb_irq(skb);
 332                 return;
 333         }
 334
 335         if (!priv->is_rtl8187b) {
 336                 struct rtl8187_rx_hdr *hdr =
 337                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
 338                 flags = le32_to_cpu(hdr->flags);
 339                 /* As with the RTL8187B below, the AGC is used to calculate
 340                  * signal strength and quality. In this case, the scaling
 341                  * constants are derived from the output of p54usb.
 342                  */
 343                 quality = 130 - ((41 * hdr->agc) >> 6);
 344                 signal = -4 - ((27 * hdr->agc) >> 6);
 345                 rx_status.antenna = (hdr->signal >> 7) & 1;
 346                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 347         } else {
 348                 struct rtl8187b_rx_hdr *hdr =
 349                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
 350                 /* The Realtek datasheet for the RTL8187B shows that the RX
 351                  * header contains the following quantities: signal quality,
 352                  * RSSI, AGC, the received power in dB, and the measured SNR.
 353                  * In testing, none of these quantities show qualitative
 354                  * agreement with AP signal strength, except for the AGC,
 355                  * which is inversely proportional to the strength of the
 356                  * signal. In the following, the quality and signal strength
 357                  * are derived from the AGC. The arbitrary scaling constants
 358                  * are chosen to make the results close to the values obtained
 359                  * for a BCM4312 using b43 as the driver. The noise is ignored
 360                  * for now.
 361                  */
 362                 flags = le32_to_cpu(hdr->flags);
 363                 quality = 170 - hdr->agc;
 364                 signal = 14 - hdr->agc / 2;
 365                 rx_status.antenna = (hdr->rssi >> 7) & 1;
 366                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 367         }
 368
 369         if (quality > 100)
 370                 quality = 100;
 371         rx_status.qual = quality;
 372         priv->quality = quality;
 373         rx_status.signal = signal;
 374         priv->signal = signal;
 375         rate = (flags >> 20) & 0xF;
 376         skb_trim(skb, flags & 0x0FFF);
 377         rx_status.rate_idx = rate;
 378         rx_status.freq = dev->conf.channel->center_freq;
 379         rx_status.band = dev->conf.channel->band;
 380         rx_status.flag |= RX_FLAG_TSFT;
 381         if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
 382                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 383         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 384
 385         skb = dev_alloc_skb(RTL8187_MAX_RX);
 386         if (unlikely(!skb)) {
 387                 /* TODO check rx queue length and refill *somewhere* */
 388                 return;
 389         }
 390
 391         info = (struct rtl8187_rx_info *)skb->cb;
 392         info->urb = urb;
 393         info->dev = dev;
 394         urb->transfer_buffer = skb_tail_pointer(skb);
 395         urb->context = skb;
 396         skb_queue_tail(&priv->rx_queue, skb);
 397
 398         usb_anchor_urb(urb, &priv->anchored);
 399         if (usb_submit_urb(urb, GFP_ATOMIC)) {
 400                 usb_unanchor_urb(urb);
 401                 skb_unlink(skb, &priv->rx_queue);
 402                 dev_kfree_skb_irq(skb);
 403         }
 404 }
 405
 406 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 407 {
 408         struct rtl8187_priv *priv = dev->priv;
 409         struct urb *entry = NULL;
 410         struct sk_buff *skb;
 411         struct rtl8187_rx_info *info;
 412         int ret = 0;
 413
 414         while (skb_queue_len(&priv->rx_queue) < 16) {
 415                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 416                 if (!skb) {
 417                         ret = -ENOMEM;
 418                         goto err;
 419                 }
 420                 entry = usb_alloc_urb(0, GFP_KERNEL);
 421                 if (!entry) {
 422                         ret = -ENOMEM;
 423                         goto err;
 424                 }
 425                 usb_fill_bulk_urb(entry, priv->udev,
 426                                   usb_rcvbulkpipe(priv->udev,
 427                                   priv->is_rtl8187b ? 3 : 1),
 428                                   skb_tail_pointer(skb),
 429                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 430                 info = (struct rtl8187_rx_info *)skb->cb;
 431                 info->urb = entry;
 432                 info->dev = dev;
 433                 skb_queue_tail(&priv->rx_queue, skb);
 434                 usb_anchor_urb(entry, &priv->anchored);
 435                 ret = usb_submit_urb(entry, GFP_KERNEL);
 436                 if (ret) {
 437                         skb_unlink(skb, &priv->rx_queue);
 438                         usb_unanchor_urb(entry);
 439                         goto err;
 440                 }
 441                 usb_free_urb(entry);
 442         }
 443         return ret;
 444
 445 err:
 446         usb_free_urb(entry);
 447         kfree_skb(skb);
 448         usb_kill_anchored_urbs(&priv->anchored);
 449         return ret;
 450 }
 451
 452 static void rtl8187b_status_cb(struct urb *urb)
 453 {
 454         struct ieee80211_hw *hw = (struct ieee80211_hw *)urb->context;
 455         struct rtl8187_priv *priv = hw->priv;
 456         u64 val;
 457         unsigned int cmd_type;
 458
 459         if (unlikely(urb->status))
 460                 return;
 461
 462         /*
 463          * Read from status buffer:
 464          *
 465          * bits [30:31] = cmd type:
 466          * - 0 indicates tx beacon interrupt
 467          * - 1 indicates tx close descriptor
 468          *
 469          * In the case of tx beacon interrupt:
 470          * [0:9] = Last Beacon CW
 471          * [10:29] = reserved
 472          * [30:31] = 00b
 473          * [32:63] = Last Beacon TSF
 474          *
 475          * If it's tx close descriptor:
 476          * [0:7] = Packet Retry Count
 477          * [8:14] = RTS Retry Count
 478          * [15] = TOK
 479          * [16:27] = Sequence No
 480          * [28] = LS
 481          * [29] = FS
 482          * [30:31] = 01b
 483          * [32:47] = unused (reserved?)
 484          * [48:63] = MAC Used Time
 485          */
 486         val = le64_to_cpu(priv->b_tx_status.buf);
 487
 488         cmd_type = (val >> 30) & 0x3;
 489         if (cmd_type == 1) {
 490                 unsigned int pkt_rc, seq_no;
 491                 bool tok;
 492                 struct sk_buff *skb;
 493                 struct ieee80211_hdr *ieee80211hdr;
 494                 unsigned long flags;
 495
 496                 pkt_rc = val & 0xFF;
 497                 tok = val & (1 << 15);
 498                 seq_no = (val >> 16) & 0xFFF;
 499
 500                 spin_lock_irqsave(&priv->b_tx_status.queue.lock, flags);
 501                 skb_queue_reverse_walk(&priv->b_tx_status.queue, skb) {
 502                         ieee80211hdr = (struct ieee80211_hdr *)skb->data;
 503
 504                         /*
 505                          * While testing, it was discovered that the seq_no
 506                          * doesn't actually contains the sequence number.
 507                          * Instead of returning just the 12 bits of sequence
 508                          * number, hardware is returning entire sequence control
 509                          * (fragment number plus sequence number) in a 12 bit
 510                          * only field overflowing after some time. As a
 511                          * workaround, just consider the lower bits, and expect
 512                          * it's unlikely we wrongly ack some sent data
 513                          */
 514                         if ((le16_to_cpu(ieee80211hdr->seq_ctrl)
 515                             & 0xFFF) == seq_no)
 516                                 break;
 517                 }
 518                 if (skb != (struct sk_buff *) &priv->b_tx_status.queue) {
 519                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 520
 521                         __skb_unlink(skb, &priv->b_tx_status.queue);
 522                         if (tok)
 523                                 info->flags |= IEEE80211_TX_STAT_ACK;
 524                         info->status.rates[0].count = pkt_rc + 1;
 525
 526                         ieee80211_tx_status_irqsafe(hw, skb);
 527                 }
 528                 spin_unlock_irqrestore(&priv->b_tx_status.queue.lock, flags);
 529         }
 530
 531         usb_anchor_urb(urb, &priv->anchored);
 532         if (usb_submit_urb(urb, GFP_ATOMIC))
 533                 usb_unanchor_urb(urb);
 534 }
 535
 536 static int rtl8187b_init_status_urb(struct ieee80211_hw *dev)
 537 {
 538         struct rtl8187_priv *priv = dev->priv;
 539         struct urb *entry;
 540         int ret = 0;
 541
 542         entry = usb_alloc_urb(0, GFP_KERNEL);
 543         if (!entry)
 544                 return -ENOMEM;
 545
 546         usb_fill_bulk_urb(entry, priv->udev, usb_rcvbulkpipe(priv->udev, 9),
 547                           &priv->b_tx_status.buf, sizeof(priv->b_tx_status.buf),
 548                           rtl8187b_status_cb, dev);
 549
 550         usb_anchor_urb(entry, &priv->anchored);
 551         ret = usb_submit_urb(entry, GFP_KERNEL);
 552         if (ret)
 553                 usb_unanchor_urb(entry);
 554         usb_free_urb(entry);
 555
 556         return ret;
 557 }
 558
 559 static int rtl8187_cmd_reset(struct ieee80211_hw *dev)
 560 {
 561         struct rtl8187_priv *priv = dev->priv;
 562         u8 reg;
 563         int i;
 564
 565         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 566         reg &= (1 << 1);
 567         reg |= RTL818X_CMD_RESET;
 568         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 569
 570         i = 10;
 571         do {
 572                 msleep(2);
 573                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 574                       RTL818X_CMD_RESET))
 575                         break;
 576         } while (--i);
 577
 578         if (!i) {
 579                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 580                 return -ETIMEDOUT;
 581         }
 582
 583         /* reload registers from eeprom */
 584         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 585
 586         i = 10;
 587         do {
 588                 msleep(4);
 589                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 590                       RTL818X_EEPROM_CMD_CONFIG))
 591                         break;
 592         } while (--i);
 593
 594         if (!i) {
 595                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 596                        wiphy_name(dev->wiphy));
 597                 return -ETIMEDOUT;
 598         }
 599
 600         return 0;
 601 }
 602
 603 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 604 {
 605         struct rtl8187_priv *priv = dev->priv;
 606         u8 reg;
 607         int res;
 608
 609         /* reset */
 610         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 611                          RTL818X_EEPROM_CMD_CONFIG);
 612         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 613         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg |
 614                          RTL818X_CONFIG3_ANAPARAM_WRITE);
 615         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
 616                           RTL8187_RTL8225_ANAPARAM_ON);
 617         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
 618                           RTL8187_RTL8225_ANAPARAM2_ON);
 619         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg &
 620                          ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 621         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 622                          RTL818X_EEPROM_CMD_NORMAL);
 623
 624         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 625
 626         msleep(200);
 627         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 628         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 629         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 630         msleep(200);
 631
 632         res = rtl8187_cmd_reset(dev);
 633         if (res)
 634                 return res;
 635
 636         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 637         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 638         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 639                         reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 640         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
 641                           RTL8187_RTL8225_ANAPARAM_ON);
 642         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
 643                           RTL8187_RTL8225_ANAPARAM2_ON);
 644         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 645                         reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 646         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 647
 648         /* setup card */
 649         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 650         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 651
 652         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 653         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 654         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 655
 656         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 657
 658         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 659         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 660         reg &= 0x3F;
 661         reg |= 0x80;
 662         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 663
 664         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 665
 666         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 667         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 668         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0);
 669
 670         // TODO: set RESP_RATE and BRSR properly
 671         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 672         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 673
 674         /* host_usb_init */
 675         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 676         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 677         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 678         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 679         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 680         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 681         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 682         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 683         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 684         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 685         msleep(100);
 686
 687         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 688         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 689         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 690         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 691                          RTL818X_EEPROM_CMD_CONFIG);
 692         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 693         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 694                          RTL818X_EEPROM_CMD_NORMAL);
 695         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 696         msleep(100);
 697
 698         priv->rf->init(dev);
 699
 700         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 701         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 702         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 703         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 704         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 705         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 706         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 707
 708         return 0;
 709 }
 710
 711 static const u8 rtl8187b_reg_table[][3] = {
 712         {0xF0, 0x32, 0}, {0xF1, 0x32, 0}, {0xF2, 0x00, 0}, {0xF3, 0x00, 0},
 713         {0xF4, 0x32, 0}, {0xF5, 0x43, 0}, {0xF6, 0x00, 0}, {0xF7, 0x00, 0},
 714         {0xF8, 0x46, 0}, {0xF9, 0xA4, 0}, {0xFA, 0x00, 0}, {0xFB, 0x00, 0},
 715         {0xFC, 0x96, 0}, {0xFD, 0xA4, 0}, {0xFE, 0x00, 0}, {0xFF, 0x00, 0},
 716
 717         {0x58, 0x4B, 1}, {0x59, 0x00, 1}, {0x5A, 0x4B, 1}, {0x5B, 0x00, 1},
 718         {0x60, 0x4B, 1}, {0x61, 0x09, 1}, {0x62, 0x4B, 1}, {0x63, 0x09, 1},
 719         {0xCE, 0x0F, 1}, {0xCF, 0x00, 1}, {0xE0, 0xFF, 1}, {0xE1, 0x0F, 1},
 720         {0xE2, 0x00, 1}, {0xF0, 0x4E, 1}, {0xF1, 0x01, 1}, {0xF2, 0x02, 1},
 721         {0xF3, 0x03, 1}, {0xF4, 0x04, 1}, {0xF5, 0x05, 1}, {0xF6, 0x06, 1},
 722         {0xF7, 0x07, 1}, {0xF8, 0x08, 1},
 723
 724         {0x4E, 0x00, 2}, {0x0C, 0x04, 2}, {0x21, 0x61, 2}, {0x22, 0x68, 2},
 725         {0x23, 0x6F, 2}, {0x24, 0x76, 2}, {0x25, 0x7D, 2}, {0x26, 0x84, 2},
 726         {0x27, 0x8D, 2}, {0x4D, 0x08, 2}, {0x50, 0x05, 2}, {0x51, 0xF5, 2},
 727         {0x52, 0x04, 2}, {0x53, 0xA0, 2}, {0x54, 0x1F, 2}, {0x55, 0x23, 2},
 728         {0x56, 0x45, 2}, {0x57, 0x67, 2}, {0x58, 0x08, 2}, {0x59, 0x08, 2},
 729         {0x5A, 0x08, 2}, {0x5B, 0x08, 2}, {0x60, 0x08, 2}, {0x61, 0x08, 2},
 730         {0x62, 0x08, 2}, {0x63, 0x08, 2}, {0x64, 0xCF, 2}, {0x72, 0x56, 2},
 731         {0x73, 0x9A, 2},
 732
 733         {0x34, 0xF0, 0}, {0x35, 0x0F, 0}, {0x5B, 0x40, 0}, {0x84, 0x88, 0},
 734         {0x85, 0x24, 0}, {0x88, 0x54, 0}, {0x8B, 0xB8, 0}, {0x8C, 0x07, 0},
 735         {0x8D, 0x00, 0}, {0x94, 0x1B, 0}, {0x95, 0x12, 0}, {0x96, 0x00, 0},
 736         {0x97, 0x06, 0}, {0x9D, 0x1A, 0}, {0x9F, 0x10, 0}, {0xB4, 0x22, 0},
 737         {0xBE, 0x80, 0}, {0xDB, 0x00, 0}, {0xEE, 0x00, 0}, {0x91, 0x03, 0},
 738
 739         {0x4C, 0x00, 2}, {0x9F, 0x00, 3}, {0x8C, 0x01, 0}, {0x8D, 0x10, 0},
 740         {0x8E, 0x08, 0}, {0x8F, 0x00, 0}
 741 };
 742
 743 static int rtl8187b_init_hw(struct ieee80211_hw *dev)
 744 {
 745         struct rtl8187_priv *priv = dev->priv;
 746         int res, i;
 747         u8 reg;
 748
 749         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 750                          RTL818X_EEPROM_CMD_CONFIG);
 751
 752         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 753         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE | RTL818X_CONFIG3_GNT_SELECT;
 754         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 755         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
 756                           RTL8187B_RTL8225_ANAPARAM2_ON);
 757         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
 758                           RTL8187B_RTL8225_ANAPARAM_ON);
 759         rtl818x_iowrite8(priv, &priv->map->ANAPARAM3,
 760                          RTL8187B_RTL8225_ANAPARAM3_ON);
 761
 762         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0x10);
 763         reg = rtl818x_ioread8(priv, (u8 *)0xFF62);
 764         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg & ~(1 << 5));
 765         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg | (1 << 5));
 766
 767         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 768         reg &= ~RTL818X_CONFIG3_ANAPARAM_WRITE;
 769         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 770
 771         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 772                          RTL818X_EEPROM_CMD_NORMAL);
 773
 774         res = rtl8187_cmd_reset(dev);
 775         if (res)
 776                 return res;
 777
 778         rtl818x_iowrite16(priv, (__le16 *)0xFF2D, 0x0FFF);
 779         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 780         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 781         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 782         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 783         reg |= RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT |
 784                RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 785         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 786
 787         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFE0, 0x0FFF, 1);
 788
 789         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 790         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 791         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFD4, 0xFFFF, 1);
 792
 793         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 794                          RTL818X_EEPROM_CMD_CONFIG);
 795         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 796         rtl818x_iowrite8(priv, &priv->map->CONFIG1, (reg & 0x3F) | 0x80);
 797         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 798                          RTL818X_EEPROM_CMD_NORMAL);
 799
 800         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 801         for (i = 0; i < ARRAY_SIZE(rtl8187b_reg_table); i++) {
 802                 rtl818x_iowrite8_idx(priv,
 803                                      (u8 *)(uintptr_t)
 804                                      (rtl8187b_reg_table[i][0] | 0xFF00),
 805                                      rtl8187b_reg_table[i][1],
 806                                      rtl8187b_reg_table[i][2]);
 807         }
 808
 809         rtl818x_iowrite16(priv, &priv->map->TID_AC_MAP, 0xFA50);
 810         rtl818x_iowrite16(priv, &priv->map->INT_MIG, 0);
 811
 812         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF0, 0, 1);
 813         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF4, 0, 1);
 814         rtl818x_iowrite8_idx(priv, (u8 *)0xFFF8, 0, 1);
 815
 816         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x00004001);
 817
 818         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x569A, 2);
 819
 820         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 821                          RTL818X_EEPROM_CMD_CONFIG);
 822         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 823         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE;
 824         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 825         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 826                          RTL818X_EEPROM_CMD_NORMAL);
 827
 828         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x0480);
 829         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x2488);
 830         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FFF);
 831         msleep(100);
 832
 833         priv->rf->init(dev);
 834
 835         reg = RTL818X_CMD_TX_ENABLE | RTL818X_CMD_RX_ENABLE;
 836         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 837         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 838
 839         rtl818x_iowrite8(priv, (u8 *)0xFE41, 0xF4);
 840         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x00);
 841         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 842         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 843         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x0F);
 844         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 845         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 846
 847         reg = rtl818x_ioread8(priv, (u8 *)0xFFDB);
 848         rtl818x_iowrite8(priv, (u8 *)0xFFDB, reg | (1 << 2));
 849         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x59FA, 3);
 850         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF74, 0x59D2, 3);
 851         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF76, 0x59D2, 3);
 852         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF78, 0x19FA, 3);
 853         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7A, 0x19FA, 3);
 854         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7C, 0x00D0, 3);
 855         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0);
 856         rtl818x_iowrite8_idx(priv, (u8 *)0xFF80, 0x0F, 1);
 857         rtl818x_iowrite8_idx(priv, (u8 *)0xFF83, 0x03, 1);
 858         rtl818x_iowrite8(priv, (u8 *)0xFFDA, 0x10);
 859         rtl818x_iowrite8_idx(priv, (u8 *)0xFF4D, 0x08, 2);
 860
 861         rtl818x_iowrite32(priv, &priv->map->HSSI_PARA, 0x0600321B);
 862
 863         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFEC, 0x0800, 1);
 864
 865         priv->slot_time = 0x9;
 866         priv->aifsn[0] = 2; /* AIFSN[AC_VO] */
 867         priv->aifsn[1] = 2; /* AIFSN[AC_VI] */
 868         priv->aifsn[2] = 7; /* AIFSN[AC_BK] */
 869         priv->aifsn[3] = 3; /* AIFSN[AC_BE] */
 870         rtl818x_iowrite8(priv, &priv->map->ACM_CONTROL, 0);
 871
 872         return 0;
 873 }
 874
 875 static void rtl8187_work(struct work_struct *work)
 876 {
 877         /* The RTL8187 returns the retry count through register 0xFFFA. In
 878          * addition, it appears to be a cumulative retry count, not the
 879          * value for the current TX packet. When multiple TX entries are
 880          * queued, the retry count will be valid for the last one in the queue.
 881          * The "error" should not matter for purposes of rate setting. */
 882         struct rtl8187_priv *priv = container_of(work, struct rtl8187_priv,
 883                                     work.work);
 884         struct ieee80211_tx_info *info;
 885         struct ieee80211_hw *dev = priv->dev;
 886         static u16 retry;
 887         u16 tmp;
 888
 889         mutex_lock(&priv->conf_mutex);
 890         tmp = rtl818x_ioread16(priv, (__le16 *)0xFFFA);
 891         while (skb_queue_len(&priv->b_tx_status.queue) > 0) {
 892                 struct sk_buff *old_skb;
 893
 894                 old_skb = skb_dequeue(&priv->b_tx_status.queue);
 895                 info = IEEE80211_SKB_CB(old_skb);
 896                 info->status.rates[0].count = tmp - retry + 1;
 897                 ieee80211_tx_status_irqsafe(dev, old_skb);
 898         }
 899         retry = tmp;
 900         mutex_unlock(&priv->conf_mutex);
 901 }
 902
 903 static int rtl8187_start(struct ieee80211_hw *dev)
 904 {
 905         struct rtl8187_priv *priv = dev->priv;
 906         u32 reg;
 907         int ret;
 908
 909         ret = (!priv->is_rtl8187b) ? rtl8187_init_hw(dev) :
 910                                      rtl8187b_init_hw(dev);
 911         if (ret)
 912                 return ret;
 913
 914         mutex_lock(&priv->conf_mutex);
 915
 916         init_usb_anchor(&priv->anchored);
 917         priv->dev = dev;
 918
 919         if (priv->is_rtl8187b) {
 920                 reg = RTL818X_RX_CONF_MGMT |
 921                       RTL818X_RX_CONF_DATA |
 922                       RTL818X_RX_CONF_BROADCAST |
 923                       RTL818X_RX_CONF_NICMAC |
 924                       RTL818X_RX_CONF_BSSID |
 925                       (7 << 13 /* RX FIFO threshold NONE */) |
 926                       (7 << 10 /* MAX RX DMA */) |
 927                       RTL818X_RX_CONF_RX_AUTORESETPHY |
 928                       RTL818X_RX_CONF_ONLYERLPKT |
 929                       RTL818X_RX_CONF_MULTICAST;
 930                 priv->rx_conf = reg;
 931                 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 932
 933                 rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 934                                   RTL818X_TX_CONF_HW_SEQNUM |
 935                                   RTL818X_TX_CONF_DISREQQSIZE |
 936                                   (7 << 8  /* short retry limit */) |
 937                                   (7 << 0  /* long retry limit */) |
 938                                   (7 << 21 /* MAX TX DMA */));
 939                 rtl8187_init_urbs(dev);
 940                 rtl8187b_init_status_urb(dev);
 941                 mutex_unlock(&priv->conf_mutex);
 942                 return 0;
 943         }
 944
 945         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 946
 947         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 948         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 949
 950         rtl8187_init_urbs(dev);
 951
 952         reg = RTL818X_RX_CONF_ONLYERLPKT |
 953               RTL818X_RX_CONF_RX_AUTORESETPHY |
 954               RTL818X_RX_CONF_BSSID |
 955               RTL818X_RX_CONF_MGMT |
 956               RTL818X_RX_CONF_DATA |
 957               (7 << 13 /* RX FIFO threshold NONE */) |
 958               (7 << 10 /* MAX RX DMA */) |
 959               RTL818X_RX_CONF_BROADCAST |
 960               RTL818X_RX_CONF_NICMAC;
 961
 962         priv->rx_conf = reg;
 963         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 964
 965         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 966         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 967         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 968         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 969
 970         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 971         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 972         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 973         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 974         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 975
 976         reg  = RTL818X_TX_CONF_CW_MIN |
 977                (7 << 21 /* MAX TX DMA */) |
 978                RTL818X_TX_CONF_NO_ICV;
 979         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 980
 981         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 982         reg |= RTL818X_CMD_TX_ENABLE;
 983         reg |= RTL818X_CMD_RX_ENABLE;
 984         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 985         INIT_DELAYED_WORK(&priv->work, rtl8187_work);
 986         mutex_unlock(&priv->conf_mutex);
 987
 988         return 0;
 989 }
 990
 991 static void rtl8187_stop(struct ieee80211_hw *dev)
 992 {
 993         struct rtl8187_priv *priv = dev->priv;
 994         struct sk_buff *skb;
 995         u32 reg;
 996
 997         mutex_lock(&priv->conf_mutex);
 998         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 999
1000         reg = rtl818x_ioread8(priv, &priv->map->CMD);
1001         reg &= ~RTL818X_CMD_TX_ENABLE;
1002         reg &= ~RTL818X_CMD_RX_ENABLE;
1003         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
1004
1005         priv->rf->stop(dev);
1006
1007         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1008         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
1009         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
1010         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1011
1012         while ((skb = skb_dequeue(&priv->b_tx_status.queue)))
1013                 dev_kfree_skb_any(skb);
1014
1015         usb_kill_anchored_urbs(&priv->anchored);
1016         if (!priv->is_rtl8187b)
1017                 cancel_delayed_work_sync(&priv->work);
1018         mutex_unlock(&priv->conf_mutex);
1019 }
1020
1021 static int rtl8187_add_interface(struct ieee80211_hw *dev,
1022                                  struct ieee80211_if_init_conf *conf)
1023 {
1024         struct rtl8187_priv *priv = dev->priv;
1025         int i;
1026         int ret = -EOPNOTSUPP;
1027
1028         mutex_lock(&priv->conf_mutex);
1029         if (priv->mode != NL80211_IFTYPE_MONITOR)
1030                 goto exit;
1031
1032         switch (conf->type) {
1033         case NL80211_IFTYPE_STATION:
1034                 priv->mode = conf->type;
1035                 break;
1036         default:
1037                 goto exit;
1038         }
1039
1040         ret = 0;
1041         priv->vif = conf->vif;
1042
1043         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1044         for (i = 0; i < ETH_ALEN; i++)
1045                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
1046                                  ((u8 *)conf->mac_addr)[i]);
1047         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1048
1049 exit:
1050         mutex_unlock(&priv->conf_mutex);
1051         return ret;
1052 }
1053
1054 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
1055                                      struct ieee80211_if_init_conf *conf)
1056 {
1057         struct rtl8187_priv *priv = dev->priv;
1058         mutex_lock(&priv->conf_mutex);
1059         priv->mode = NL80211_IFTYPE_MONITOR;
1060         priv->vif = NULL;
1061         mutex_unlock(&priv->conf_mutex);
1062 }
1063
1064 static int rtl8187_config(struct ieee80211_hw *dev, u32 changed)
1065 {
1066         struct rtl8187_priv *priv = dev->priv;
1067         struct ieee80211_conf *conf = &dev->conf;
1068         u32 reg;
1069
1070         mutex_lock(&priv->conf_mutex);
1071         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1072         /* Enable TX loopback on MAC level to avoid TX during channel
1073          * changes, as this has be seen to causes problems and the
1074          * card will stop work until next reset
1075          */
1076         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
1077                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
1078         priv->rf->set_chan(dev, conf);
1079         msleep(10);
1080         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
1081
1082         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
1083         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
1084         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
1085         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
1086         mutex_unlock(&priv->conf_mutex);
1087         return 0;
1088 }
1089
1090 static int rtl8187_config_interface(struct ieee80211_hw *dev,
1091                                     struct ieee80211_vif *vif,
1092                                     struct ieee80211_if_conf *conf)
1093 {
1094         struct rtl8187_priv *priv = dev->priv;
1095         int i;
1096         u8 reg;
1097
1098         mutex_lock(&priv->conf_mutex);
1099         for (i = 0; i < ETH_ALEN; i++)
1100                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
1101
1102         if (is_valid_ether_addr(conf->bssid)) {
1103                 reg = RTL818X_MSR_INFRA;
1104                 if (priv->is_rtl8187b)
1105                         reg |= RTL818X_MSR_ENEDCA;
1106                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1107         } else {
1108                 reg = RTL818X_MSR_NO_LINK;
1109                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1110         }
1111
1112         mutex_unlock(&priv->conf_mutex);
1113         return 0;
1114 }
1115
1116 /*
1117  * With 8187B, AC_*_PARAM clashes with FEMR definition in struct rtl818x_csr for
1118  * example. Thus we have to use raw values for AC_*_PARAM register addresses.
1119  */
1120 static __le32 *rtl8187b_ac_addr[4] = {
1121         (__le32 *) 0xFFF0, /* AC_VO */
1122         (__le32 *) 0xFFF4, /* AC_VI */
1123         (__le32 *) 0xFFFC, /* AC_BK */
1124         (__le32 *) 0xFFF8, /* AC_BE */
1125 };
1126
1127 #define SIFS_TIME 0xa
1128
1129 static void rtl8187_conf_erp(struct rtl8187_priv *priv, bool use_short_slot,
1130                              bool use_short_preamble)
1131 {
1132         if (priv->is_rtl8187b) {
1133                 u8 difs, eifs;
1134                 u16 ack_timeout;
1135                 int queue;
1136
1137                 if (use_short_slot) {
1138                         priv->slot_time = 0x9;
1139                         difs = 0x1c;
1140                         eifs = 0x53;
1141                 } else {
1142                         priv->slot_time = 0x14;
1143                         difs = 0x32;
1144                         eifs = 0x5b;
1145                 }
1146                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1147                 rtl818x_iowrite8(priv, &priv->map->SLOT, priv->slot_time);
1148                 rtl818x_iowrite8(priv, &priv->map->DIFS, difs);
1149
1150                 /*
1151                  * BRSR+1 on 8187B is in fact EIFS register
1152                  * Value in units of 4 us
1153                  */
1154                 rtl818x_iowrite8(priv, (u8 *)&priv->map->BRSR + 1, eifs);
1155
1156                 /*
1157                  * For 8187B, CARRIER_SENSE_COUNTER is in fact ack timeout
1158                  * register. In units of 4 us like eifs register
1159                  * ack_timeout = ack duration + plcp + difs + preamble
1160                  */
1161                 ack_timeout = 112 + 48 + difs;
1162                 if (use_short_preamble)
1163                         ack_timeout += 72;
1164                 else
1165                         ack_timeout += 144;
1166                 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER,
1167                                  DIV_ROUND_UP(ack_timeout, 4));
1168
1169                 for (queue = 0; queue < 4; queue++)
1170                         rtl818x_iowrite8(priv, (u8 *) rtl8187b_ac_addr[queue],
1171                                          priv->aifsn[queue] * priv->slot_time +
1172                                          SIFS_TIME);
1173         } else {
1174                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1175                 if (use_short_slot) {
1176                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
1177                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
1178                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
1179                 } else {
1180                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
1181                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
1182                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
1183                 }
1184         }
1185 }
1186
1187 static void rtl8187_bss_info_changed(struct ieee80211_hw *dev,
1188                                      struct ieee80211_vif *vif,
1189                                      struct ieee80211_bss_conf *info,
1190                                      u32 changed)
1191 {
1192         struct rtl8187_priv *priv = dev->priv;
1193
1194         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE))
1195                 rtl8187_conf_erp(priv, info->use_short_slot,
1196                                  info->use_short_preamble);
1197 }
1198
1199 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
1200                                      unsigned int changed_flags,
1201                                      unsigned int *total_flags,
1202                                      int mc_count, struct dev_addr_list *mclist)
1203 {
1204         struct rtl8187_priv *priv = dev->priv;
1205
1206         if (changed_flags & FIF_FCSFAIL)
1207                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
1208         if (changed_flags & FIF_CONTROL)
1209                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
1210         if (changed_flags & FIF_OTHER_BSS)
1211                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
1212         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
1213                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
1214         else
1215                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
1216
1217         *total_flags = 0;
1218
1219         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
1220                 *total_flags |= FIF_FCSFAIL;
1221         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
1222                 *total_flags |= FIF_CONTROL;
1223         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
1224                 *total_flags |= FIF_OTHER_BSS;
1225         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
1226                 *total_flags |= FIF_ALLMULTI;
1227
1228         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
1229 }
1230
1231 static int rtl8187_conf_tx(struct ieee80211_hw *dev, u16 queue,
1232                            const struct ieee80211_tx_queue_params *params)
1233 {
1234         struct rtl8187_priv *priv = dev->priv;
1235         u8 cw_min, cw_max;
1236
1237         if (queue > 3)
1238                 return -EINVAL;
1239
1240         cw_min = fls(params->cw_min);
1241         cw_max = fls(params->cw_max);
1242
1243         if (priv->is_rtl8187b) {
1244                 priv->aifsn[queue] = params->aifs;
1245
1246                 /*
1247                  * This is the structure of AC_*_PARAM registers in 8187B:
1248                  * - TXOP limit field, bit offset = 16
1249                  * - ECWmax, bit offset = 12
1250                  * - ECWmin, bit offset = 8
1251                  * - AIFS, bit offset = 0
1252                  */
1253                 rtl818x_iowrite32(priv, rtl8187b_ac_addr[queue],
1254                                   (params->txop << 16) | (cw_max << 12) |
1255                                   (cw_min << 8) | (params->aifs *
1256                                   priv->slot_time + SIFS_TIME));
1257         } else {
1258                 if (queue != 0)
1259                         return -EINVAL;
1260
1261                 rtl818x_iowrite8(priv, &priv->map->CW_VAL,
1262                                  cw_min | (cw_max << 4));
1263         }
1264         return 0;
1265 }
1266
1267 static const struct ieee80211_ops rtl8187_ops = {
1268         .tx                     = rtl8187_tx,
1269         .start                  = rtl8187_start,
1270         .stop                   = rtl8187_stop,
1271         .add_interface          = rtl8187_add_interface,
1272         .remove_interface       = rtl8187_remove_interface,
1273         .config                 = rtl8187_config,
1274         .config_interface       = rtl8187_config_interface,
1275         .bss_info_changed       = rtl8187_bss_info_changed,
1276         .configure_filter       = rtl8187_configure_filter,
1277         .conf_tx                = rtl8187_conf_tx
1278 };
1279
1280 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
1281 {
1282         struct ieee80211_hw *dev = eeprom->data;
1283         struct rtl8187_priv *priv = dev->priv;
1284         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1285
1286         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
1287         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
1288         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
1289         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
1290 }
1291
1292 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
1293 {
1294         struct ieee80211_hw *dev = eeprom->data;
1295         struct rtl8187_priv *priv = dev->priv;
1296         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
1297
1298         if (eeprom->reg_data_in)
1299                 reg |= RTL818X_EEPROM_CMD_WRITE;
1300         if (eeprom->reg_data_out)
1301                 reg |= RTL818X_EEPROM_CMD_READ;
1302         if (eeprom->reg_data_clock)
1303                 reg |= RTL818X_EEPROM_CMD_CK;
1304         if (eeprom->reg_chip_select)
1305                 reg |= RTL818X_EEPROM_CMD_CS;
1306
1307         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
1308         udelay(10);
1309 }
1310
1311 static int __devinit rtl8187_probe(struct usb_interface *intf,
1312                                    const struct usb_device_id *id)
1313 {
1314         struct usb_device *udev = interface_to_usbdev(intf);
1315         struct ieee80211_hw *dev;
1316         struct rtl8187_priv *priv;
1317         struct eeprom_93cx6 eeprom;
1318         struct ieee80211_channel *channel;
1319         const char *chip_name;
1320         u16 txpwr, reg;
1321         int err, i;
1322
1323         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
1324         if (!dev) {
1325                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
1326                 return -ENOMEM;
1327         }
1328
1329         priv = dev->priv;
1330         priv->is_rtl8187b = (id->driver_info == DEVICE_RTL8187B);
1331
1332         /* allocate "DMA aware" buffer for register accesses */
1333         priv->io_dmabuf = kmalloc(sizeof(*priv->io_dmabuf), GFP_KERNEL);
1334         if (!priv->io_dmabuf) {
1335                 err = -ENOMEM;
1336                 goto err_free_dev;
1337         }
1338         mutex_init(&priv->io_mutex);
1339
1340         SET_IEEE80211_DEV(dev, &intf->dev);
1341         usb_set_intfdata(intf, dev);
1342         priv->udev = udev;
1343
1344         usb_get_dev(udev);
1345
1346         skb_queue_head_init(&priv->rx_queue);
1347
1348         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
1349         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
1350
1351         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
1352         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
1353         priv->map = (struct rtl818x_csr *)0xFF00;
1354
1355         priv->band.band = IEEE80211_BAND_2GHZ;
1356         priv->band.channels = priv->channels;
1357         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
1358         priv->band.bitrates = priv->rates;
1359         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
1360         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
1361
1362
1363         priv->mode = NL80211_IFTYPE_MONITOR;
1364         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1365                      IEEE80211_HW_SIGNAL_DBM |
1366                      IEEE80211_HW_RX_INCLUDES_FCS;
1367
1368         eeprom.data = dev;
1369         eeprom.register_read = rtl8187_eeprom_register_read;
1370         eeprom.register_write = rtl8187_eeprom_register_write;
1371         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
1372                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
1373         else
1374                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
1375
1376         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1377         udelay(10);
1378
1379         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
1380                                (__le16 __force *)dev->wiphy->perm_addr, 3);
1381         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
1382                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
1383                        "generated MAC address\n");
1384                 random_ether_addr(dev->wiphy->perm_addr);
1385         }
1386
1387         channel = priv->channels;
1388         for (i = 0; i < 3; i++) {
1389                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
1390                                   &txpwr);
1391                 (*channel++).hw_value = txpwr & 0xFF;
1392                 (*channel++).hw_value = txpwr >> 8;
1393         }
1394         for (i = 0; i < 2; i++) {
1395                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
1396                                   &txpwr);
1397                 (*channel++).hw_value = txpwr & 0xFF;
1398                 (*channel++).hw_value = txpwr >> 8;
1399         }
1400
1401         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
1402                           &priv->txpwr_base);
1403
1404         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
1405         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
1406         /* 0 means asic B-cut, we should use SW 3 wire
1407          * bit-by-bit banging for radio. 1 means we can use
1408          * USB specific request to write radio registers */
1409         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
1410         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
1411         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1412
1413         if (!priv->is_rtl8187b) {
1414                 u32 reg32;
1415                 reg32 = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1416                 reg32 &= RTL818X_TX_CONF_HWVER_MASK;
1417                 switch (reg32) {
1418                 case RTL818X_TX_CONF_R8187vD_B:
1419                         /* Some RTL8187B devices have a USB ID of 0x8187
1420                          * detect them here */
1421                         chip_name = "RTL8187BvB(early)";
1422                         priv->is_rtl8187b = 1;
1423                         priv->hw_rev = RTL8187BvB;
1424                         break;
1425                 case RTL818X_TX_CONF_R8187vD:
1426                         chip_name = "RTL8187vD";
1427                         break;
1428                 default:
1429                         chip_name = "RTL8187vB (default)";
1430                 }
1431        } else {
1432                 /*
1433                  * Force USB request to write radio registers for 8187B, Realtek
1434                  * only uses it in their sources
1435                  */
1436                 /*if (priv->asic_rev == 0) {
1437                         printk(KERN_WARNING "rtl8187: Forcing use of USB "
1438                                "requests to write to radio registers\n");
1439                         priv->asic_rev = 1;
1440                 }*/
1441                 switch (rtl818x_ioread8(priv, (u8 *)0xFFE1)) {
1442                 case RTL818X_R8187B_B:
1443                         chip_name = "RTL8187BvB";
1444                         priv->hw_rev = RTL8187BvB;
1445                         break;
1446                 case RTL818X_R8187B_D:
1447                         chip_name = "RTL8187BvD";
1448                         priv->hw_rev = RTL8187BvD;
1449                         break;
1450                 case RTL818X_R8187B_E:
1451                         chip_name = "RTL8187BvE";
1452                         priv->hw_rev = RTL8187BvE;
1453                         break;
1454                 default:
1455                         chip_name = "RTL8187BvB (default)";
1456                         priv->hw_rev = RTL8187BvB;
1457                 }
1458         }
1459
1460         if (!priv->is_rtl8187b) {
1461                 for (i = 0; i < 2; i++) {
1462                         eeprom_93cx6_read(&eeprom,
1463                                           RTL8187_EEPROM_TXPWR_CHAN_6 + i,
1464                                           &txpwr);
1465                         (*channel++).hw_value = txpwr & 0xFF;
1466                         (*channel++).hw_value = txpwr >> 8;
1467                 }
1468         } else {
1469                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6,
1470                                   &txpwr);
1471                 (*channel++).hw_value = txpwr & 0xFF;
1472
1473                 eeprom_93cx6_read(&eeprom, 0x0A, &txpwr);
1474                 (*channel++).hw_value = txpwr & 0xFF;
1475
1476                 eeprom_93cx6_read(&eeprom, 0x1C, &txpwr);
1477                 (*channel++).hw_value = txpwr & 0xFF;
1478                 (*channel++).hw_value = txpwr >> 8;
1479         }
1480
1481         if (priv->is_rtl8187b)
1482                 printk(KERN_WARNING "rtl8187: 8187B chip detected.\n");
1483
1484         /*
1485          * XXX: Once this driver supports anything that requires
1486          *      beacons it must implement IEEE80211_TX_CTL_ASSIGN_SEQ.
1487          */
1488         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1489
1490         if ((id->driver_info == DEVICE_RTL8187) && priv->is_rtl8187b)
1491                 printk(KERN_INFO "rtl8187: inconsistency between id with OEM"
1492                        " info!\n");
1493
1494         priv->rf = rtl8187_detect_rf(dev);
1495         dev->extra_tx_headroom = (!priv->is_rtl8187b) ?
1496                                   sizeof(struct rtl8187_tx_hdr) :
1497                                   sizeof(struct rtl8187b_tx_hdr);
1498         if (!priv->is_rtl8187b)
1499                 dev->queues = 1;
1500         else
1501                 dev->queues = 4;
1502
1503         err = ieee80211_register_hw(dev);
1504         if (err) {
1505                 printk(KERN_ERR "rtl8187: Cannot register device\n");
1506                 goto err_free_dmabuf;
1507         }
1508         mutex_init(&priv->conf_mutex);
1509         skb_queue_head_init(&priv->b_tx_status.queue);
1510
1511         printk(KERN_INFO "%s: hwaddr %pM, %s V%d + %s\n",
1512                wiphy_name(dev->wiphy), dev->wiphy->perm_addr,
1513                chip_name, priv->asic_rev, priv->rf->name);
1514
1515         return 0;
1516
1517  err_free_dmabuf:
1518         kfree(priv->io_dmabuf);
1519  err_free_dev:
1520         ieee80211_free_hw(dev);
1521         usb_set_intfdata(intf, NULL);
1522         usb_put_dev(udev);
1523         return err;
1524 }
1525
1526 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
1527 {
1528         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1529         struct rtl8187_priv *priv;
1530
1531         if (!dev)
1532                 return;
1533
1534         ieee80211_unregister_hw(dev);
1535
1536         priv = dev->priv;
1537         usb_reset_device(priv->udev);
1538         usb_put_dev(interface_to_usbdev(intf));
1539         kfree(priv->io_dmabuf);
1540         ieee80211_free_hw(dev);
1541 }
1542
1543 static struct usb_driver rtl8187_driver = {
1544         .name           = KBUILD_MODNAME,
1545         .id_table       = rtl8187_table,
1546         .probe          = rtl8187_probe,
1547         .disconnect     = __devexit_p(rtl8187_disconnect),
1548 };
1549
1550 static int __init rtl8187_init(void)
1551 {
1552         return usb_register(&rtl8187_driver);
1553 }
1554
1555 static void __exit rtl8187_exit(void)
1556 {
1557         usb_deregister(&rtl8187_driver);
1558 }
1559
1560 module_init(rtl8187_init);
1561 module_exit(rtl8187_exit);