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 <andrea.merello@gmail.com>
   6  *
   7  * Based on the r8187 driver, which is:
   8  * Copyright 2005 Andrea Merello <andrea.merello@gmail.com>, 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/usb.h>
  24 #include <linux/slab.h>
  25 #include <linux/delay.h>
  26 #include <linux/etherdevice.h>
  27 #include <linux/eeprom_93cx6.h>
  28 #include <linux/module.h>
  29 #include <net/mac80211.h>
  30
  31 #include "rtl8187.h"
  32 #include "rtl8225.h"
  33 #ifdef CONFIG_RTL8187_LEDS
  34 #include "leds.h"
  35 #endif
  36 #include "rfkill.h"
  37
  38 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  39 MODULE_AUTHOR("Andrea Merello <andrea.merello@gmail.com>");
  40 MODULE_AUTHOR("Herton Ronaldo Krzesinski <herton@mandriva.com.br>");
  41 MODULE_AUTHOR("Hin-Tak Leung <htl10@users.sourceforge.net>");
  42 MODULE_AUTHOR("Larry Finger <Larry.Finger@lwfinger.net>");
  43 MODULE_DESCRIPTION("RTL8187/RTL8187B USB wireless driver");
  44 MODULE_LICENSE("GPL");
  45
  46 static struct usb_device_id rtl8187_table[] = {
  47         /* Asus */
  48         {USB_DEVICE(0x0b05, 0x171d), .driver_info = DEVICE_RTL8187},
  49         /* Belkin */
  50         {USB_DEVICE(0x050d, 0x705e), .driver_info = DEVICE_RTL8187B},
  51         /* Realtek */
  52         {USB_DEVICE(0x0bda, 0x8187), .driver_info = DEVICE_RTL8187},
  53         {USB_DEVICE(0x0bda, 0x8189), .driver_info = DEVICE_RTL8187B},
  54         {USB_DEVICE(0x0bda, 0x8197), .driver_info = DEVICE_RTL8187B},
  55         {USB_DEVICE(0x0bda, 0x8198), .driver_info = DEVICE_RTL8187B},
  56         /* Surecom */
  57         {USB_DEVICE(0x0769, 0x11F2), .driver_info = DEVICE_RTL8187},
  58         /* Logitech */
  59         {USB_DEVICE(0x0789, 0x010C), .driver_info = DEVICE_RTL8187},
  60         /* Netgear */
  61         {USB_DEVICE(0x0846, 0x6100), .driver_info = DEVICE_RTL8187},
  62         {USB_DEVICE(0x0846, 0x6a00), .driver_info = DEVICE_RTL8187},
  63         {USB_DEVICE(0x0846, 0x4260), .driver_info = DEVICE_RTL8187B},
  64         /* HP */
  65         {USB_DEVICE(0x03f0, 0xca02), .driver_info = DEVICE_RTL8187},
  66         /* Sitecom */
  67         {USB_DEVICE(0x0df6, 0x000d), .driver_info = DEVICE_RTL8187},
  68         {USB_DEVICE(0x0df6, 0x0028), .driver_info = DEVICE_RTL8187B},
  69         {USB_DEVICE(0x0df6, 0x0029), .driver_info = DEVICE_RTL8187B},
  70         /* Sphairon Access Systems GmbH */
  71         {USB_DEVICE(0x114B, 0x0150), .driver_info = DEVICE_RTL8187},
  72         /* Dick Smith Electronics */
  73         {USB_DEVICE(0x1371, 0x9401), .driver_info = DEVICE_RTL8187},
  74         /* Abocom */
  75         {USB_DEVICE(0x13d1, 0xabe6), .driver_info = DEVICE_RTL8187},
  76         /* Qcom */
  77         {USB_DEVICE(0x18E8, 0x6232), .driver_info = DEVICE_RTL8187},
  78         /* AirLive */
  79         {USB_DEVICE(0x1b75, 0x8187), .driver_info = DEVICE_RTL8187},
  80         /* Linksys */
  81         {USB_DEVICE(0x1737, 0x0073), .driver_info = DEVICE_RTL8187B},
  82         {}
  83 };
  84
  85 MODULE_DEVICE_TABLE(usb, rtl8187_table);
  86
  87 static const struct ieee80211_rate rtl818x_rates[] = {
  88         { .bitrate = 10, .hw_value = 0, },
  89         { .bitrate = 20, .hw_value = 1, },
  90         { .bitrate = 55, .hw_value = 2, },
  91         { .bitrate = 110, .hw_value = 3, },
  92         { .bitrate = 60, .hw_value = 4, },
  93         { .bitrate = 90, .hw_value = 5, },
  94         { .bitrate = 120, .hw_value = 6, },
  95         { .bitrate = 180, .hw_value = 7, },
  96         { .bitrate = 240, .hw_value = 8, },
  97         { .bitrate = 360, .hw_value = 9, },
  98         { .bitrate = 480, .hw_value = 10, },
  99         { .bitrate = 540, .hw_value = 11, },
 100 };
 101
 102 static const struct ieee80211_channel rtl818x_channels[] = {
 103         { .center_freq = 2412 },
 104         { .center_freq = 2417 },
 105         { .center_freq = 2422 },
 106         { .center_freq = 2427 },
 107         { .center_freq = 2432 },
 108         { .center_freq = 2437 },
 109         { .center_freq = 2442 },
 110         { .center_freq = 2447 },
 111         { .center_freq = 2452 },
 112         { .center_freq = 2457 },
 113         { .center_freq = 2462 },
 114         { .center_freq = 2467 },
 115         { .center_freq = 2472 },
 116         { .center_freq = 2484 },
 117 };
 118
 119 static void rtl8187_iowrite_async_cb(struct urb *urb)
 120 {
 121         kfree(urb->context);
 122 }
 123
 124 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
 125                                   void *data, u16 len)
 126 {
 127         struct usb_ctrlrequest *dr;
 128         struct urb *urb;
 129         struct rtl8187_async_write_data {
 130                 u8 data[4];
 131                 struct usb_ctrlrequest dr;
 132         } *buf;
 133         int rc;
 134
 135         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
 136         if (!buf)
 137                 return;
 138
 139         urb = usb_alloc_urb(0, GFP_ATOMIC);
 140         if (!urb) {
 141                 kfree(buf);
 142                 return;
 143         }
 144
 145         dr = &buf->dr;
 146
 147         dr->bRequestType = RTL8187_REQT_WRITE;
 148         dr->bRequest = RTL8187_REQ_SET_REG;
 149         dr->wValue = addr;
 150         dr->wIndex = 0;
 151         dr->wLength = cpu_to_le16(len);
 152
 153         memcpy(buf, data, len);
 154
 155         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
 156                              (unsigned char *)dr, buf, len,
 157                              rtl8187_iowrite_async_cb, buf);
 158         usb_anchor_urb(urb, &priv->anchored);
 159         rc = usb_submit_urb(urb, GFP_ATOMIC);
 160         if (rc < 0) {
 161                 kfree(buf);
 162                 usb_unanchor_urb(urb);
 163         }
 164         usb_free_urb(urb);
 165 }
 166
 167 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
 168                                            __le32 *addr, u32 val)
 169 {
 170         __le32 buf = cpu_to_le32(val);
 171
 172         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
 173                               &buf, sizeof(buf));
 174 }
 175
 176 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
 177 {
 178         struct rtl8187_priv *priv = dev->priv;
 179
 180         data <<= 8;
 181         data |= addr | 0x80;
 182
 183         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
 184         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
 185         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
 186         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
 187 }
 188
 189 static void rtl8187_tx_cb(struct urb *urb)
 190 {
 191         struct sk_buff *skb = (struct sk_buff *)urb->context;
 192         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 193         struct ieee80211_hw *hw = info->rate_driver_data[0];
 194         struct rtl8187_priv *priv = hw->priv;
 195
 196         skb_pull(skb, priv->is_rtl8187b ? sizeof(struct rtl8187b_tx_hdr) :
 197                                           sizeof(struct rtl8187_tx_hdr));
 198         ieee80211_tx_info_clear_status(info);
 199
 200         if (!(urb->status) && !(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 201                 if (priv->is_rtl8187b) {
 202                         skb_queue_tail(&priv->b_tx_status.queue, skb);
 203
 204                         /* queue is "full", discard last items */
 205                         while (skb_queue_len(&priv->b_tx_status.queue) > 5) {
 206                                 struct sk_buff *old_skb;
 207
 208                                 dev_dbg(&priv->udev->dev,
 209                                         "transmit status queue full\n");
 210
 211                                 old_skb = skb_dequeue(&priv->b_tx_status.queue);
 212                                 ieee80211_tx_status_irqsafe(hw, old_skb);
 213                         }
 214                         return;
 215                 } else {
 216                         info->flags |= IEEE80211_TX_STAT_ACK;
 217                 }
 218         }
 219         if (priv->is_rtl8187b)
 220                 ieee80211_tx_status_irqsafe(hw, skb);
 221         else {
 222                 /* Retry information for the RTI8187 is only available by
 223                  * reading a register in the device. We are in interrupt mode
 224                  * here, thus queue the skb and finish on a work queue. */
 225                 skb_queue_tail(&priv->b_tx_status.queue, skb);
 226                 ieee80211_queue_delayed_work(hw, &priv->work, 0);
 227         }
 228 }
 229
 230 static void rtl8187_tx(struct ieee80211_hw *dev,
 231                        struct ieee80211_tx_control *control,
 232                        struct sk_buff *skb)
 233 {
 234         struct rtl8187_priv *priv = dev->priv;
 235         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 236         struct ieee80211_hdr *tx_hdr =  (struct ieee80211_hdr *)(skb->data);
 237         unsigned int ep;
 238         void *buf;
 239         struct urb *urb;
 240         __le16 rts_dur = 0;
 241         u32 flags;
 242         int rc;
 243
 244         urb = usb_alloc_urb(0, GFP_ATOMIC);
 245         if (!urb) {
 246                 kfree_skb(skb);
 247                 return;
 248         }
 249
 250         flags = skb->len;
 251         flags |= RTL818X_TX_DESC_FLAG_NO_ENC;
 252
 253         flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
 254         if (ieee80211_has_morefrags(tx_hdr->frame_control))
 255                 flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
 256         if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 257                 flags |= RTL818X_TX_DESC_FLAG_RTS;
 258                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 259                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 260                                                  skb->len, info);
 261         } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 262                 flags |= RTL818X_TX_DESC_FLAG_CTS;
 263                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 264         }
 265
 266         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
 267                 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
 268                         priv->seqno += 0x10;
 269                 tx_hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
 270                 tx_hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
 271         }
 272
 273         if (!priv->is_rtl8187b) {
 274                 struct rtl8187_tx_hdr *hdr =
 275                         (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 276                 hdr->flags = cpu_to_le32(flags);
 277                 hdr->len = 0;
 278                 hdr->rts_duration = rts_dur;
 279                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
 280                 buf = hdr;
 281
 282                 ep = 2;
 283         } else {
 284                 /* fc needs to be calculated before skb_push() */
 285                 unsigned int epmap[4] = { 6, 7, 5, 4 };
 286                 u16 fc = le16_to_cpu(tx_hdr->frame_control);
 287
 288                 struct rtl8187b_tx_hdr *hdr =
 289                         (struct rtl8187b_tx_hdr *)skb_push(skb, sizeof(*hdr));
 290                 struct ieee80211_rate *txrate =
 291                         ieee80211_get_tx_rate(dev, info);
 292                 memset(hdr, 0, sizeof(*hdr));
 293                 hdr->flags = cpu_to_le32(flags);
 294                 hdr->rts_duration = rts_dur;
 295                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
 296                 hdr->tx_duration =
 297                         ieee80211_generic_frame_duration(dev, priv->vif,
 298                                                          info->band,
 299                                                          skb->len, txrate);
 300                 buf = hdr;
 301
 302                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
 303                         ep = 12;
 304                 else
 305                         ep = epmap[skb_get_queue_mapping(skb)];
 306         }
 307
 308         info->rate_driver_data[0] = dev;
 309         info->rate_driver_data[1] = urb;
 310
 311         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, ep),
 312                           buf, skb->len, rtl8187_tx_cb, skb);
 313         urb->transfer_flags |= URB_ZERO_PACKET;
 314         usb_anchor_urb(urb, &priv->anchored);
 315         rc = usb_submit_urb(urb, GFP_ATOMIC);
 316         if (rc < 0) {
 317                 usb_unanchor_urb(urb);
 318                 kfree_skb(skb);
 319         }
 320         usb_free_urb(urb);
 321 }
 322
 323 static void rtl8187_rx_cb(struct urb *urb)
 324 {
 325         struct sk_buff *skb = (struct sk_buff *)urb->context;
 326         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 327         struct ieee80211_hw *dev = info->dev;
 328         struct rtl8187_priv *priv = dev->priv;
 329         struct ieee80211_rx_status rx_status = { 0 };
 330         int rate, signal;
 331         u32 flags;
 332         unsigned long f;
 333
 334         spin_lock_irqsave(&priv->rx_queue.lock, f);
 335         __skb_unlink(skb, &priv->rx_queue);
 336         spin_unlock_irqrestore(&priv->rx_queue.lock, f);
 337         skb_put(skb, urb->actual_length);
 338
 339         if (unlikely(urb->status)) {
 340                 dev_kfree_skb_irq(skb);
 341                 return;
 342         }
 343
 344         if (!priv->is_rtl8187b) {
 345                 struct rtl8187_rx_hdr *hdr =
 346                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
 347                 flags = le32_to_cpu(hdr->flags);
 348                 /* As with the RTL8187B below, the AGC is used to calculate
 349                  * signal strength. In this case, the scaling
 350                  * constants are derived from the output of p54usb.
 351                  */
 352                 signal = -4 - ((27 * hdr->agc) >> 6);
 353                 rx_status.antenna = (hdr->signal >> 7) & 1;
 354                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 355         } else {
 356                 struct rtl8187b_rx_hdr *hdr =
 357                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
 358                 /* The Realtek datasheet for the RTL8187B shows that the RX
 359                  * header contains the following quantities: signal quality,
 360                  * RSSI, AGC, the received power in dB, and the measured SNR.
 361                  * In testing, none of these quantities show qualitative
 362                  * agreement with AP signal strength, except for the AGC,
 363                  * which is inversely proportional to the strength of the
 364                  * signal. In the following, the signal strength
 365                  * is derived from the AGC. The arbitrary scaling constants
 366                  * are chosen to make the results close to the values obtained
 367                  * for a BCM4312 using b43 as the driver. The noise is ignored
 368                  * for now.
 369                  */
 370                 flags = le32_to_cpu(hdr->flags);
 371                 signal = 14 - hdr->agc / 2;
 372                 rx_status.antenna = (hdr->rssi >> 7) & 1;
 373                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 374         }
 375
 376         rx_status.signal = signal;
 377         priv->signal = signal;
 378         rate = (flags >> 20) & 0xF;
 379         skb_trim(skb, flags & 0x0FFF);
 380         rx_status.rate_idx = rate;
 381         rx_status.freq = dev->conf.chandef.chan->center_freq;
 382         rx_status.band = dev->conf.chandef.chan->band;
 383         rx_status.flag |= RX_FLAG_MACTIME_START;
 384         if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
 385                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 386         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
 387         ieee80211_rx_irqsafe(dev, skb);
 388
 389         skb = dev_alloc_skb(RTL8187_MAX_RX);
 390         if (unlikely(!skb)) {
 391                 /* TODO check rx queue length and refill *somewhere* */
 392                 return;
 393         }
 394
 395         info = (struct rtl8187_rx_info *)skb->cb;
 396         info->urb = urb;
 397         info->dev = dev;
 398         urb->transfer_buffer = skb_tail_pointer(skb);
 399         urb->context = skb;
 400         skb_queue_tail(&priv->rx_queue, skb);
 401
 402         usb_anchor_urb(urb, &priv->anchored);
 403         if (usb_submit_urb(urb, GFP_ATOMIC)) {
 404                 usb_unanchor_urb(urb);
 405                 skb_unlink(skb, &priv->rx_queue);
 406                 dev_kfree_skb_irq(skb);
 407         }
 408 }
 409
 410 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 411 {
 412         struct rtl8187_priv *priv = dev->priv;
 413         struct urb *entry = NULL;
 414         struct sk_buff *skb;
 415         struct rtl8187_rx_info *info;
 416         int ret = 0;
 417
 418         while (skb_queue_len(&priv->rx_queue) < 32) {
 419                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 420                 if (!skb) {
 421                         ret = -ENOMEM;
 422                         goto err;
 423                 }
 424                 entry = usb_alloc_urb(0, GFP_KERNEL);
 425                 if (!entry) {
 426                         ret = -ENOMEM;
 427                         goto err;
 428                 }
 429                 usb_fill_bulk_urb(entry, priv->udev,
 430                                   usb_rcvbulkpipe(priv->udev,
 431                                   priv->is_rtl8187b ? 3 : 1),
 432                                   skb_tail_pointer(skb),
 433                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 434                 info = (struct rtl8187_rx_info *)skb->cb;
 435                 info->urb = entry;
 436                 info->dev = dev;
 437                 skb_queue_tail(&priv->rx_queue, skb);
 438                 usb_anchor_urb(entry, &priv->anchored);
 439                 ret = usb_submit_urb(entry, GFP_KERNEL);
 440                 usb_put_urb(entry);
 441                 if (ret) {
 442                         skb_unlink(skb, &priv->rx_queue);
 443                         usb_unanchor_urb(entry);
 444                         goto err;
 445                 }
 446         }
 447         return ret;
 448
 449 err:
 450         kfree_skb(skb);
 451         usb_kill_anchored_urbs(&priv->anchored);
 452         return ret;
 453 }
 454
 455 static void rtl8187b_status_cb(struct urb *urb)
 456 {
 457         struct ieee80211_hw *hw = (struct ieee80211_hw *)urb->context;
 458         struct rtl8187_priv *priv = hw->priv;
 459         u64 val;
 460         unsigned int cmd_type;
 461
 462         if (unlikely(urb->status))
 463                 return;
 464
 465         /*
 466          * Read from status buffer:
 467          *
 468          * bits [30:31] = cmd type:
 469          * - 0 indicates tx beacon interrupt
 470          * - 1 indicates tx close descriptor
 471          *
 472          * In the case of tx beacon interrupt:
 473          * [0:9] = Last Beacon CW
 474          * [10:29] = reserved
 475          * [30:31] = 00b
 476          * [32:63] = Last Beacon TSF
 477          *
 478          * If it's tx close descriptor:
 479          * [0:7] = Packet Retry Count
 480          * [8:14] = RTS Retry Count
 481          * [15] = TOK
 482          * [16:27] = Sequence No
 483          * [28] = LS
 484          * [29] = FS
 485          * [30:31] = 01b
 486          * [32:47] = unused (reserved?)
 487          * [48:63] = MAC Used Time
 488          */
 489         val = le64_to_cpu(priv->b_tx_status.buf);
 490
 491         cmd_type = (val >> 30) & 0x3;
 492         if (cmd_type == 1) {
 493                 unsigned int pkt_rc, seq_no;
 494                 bool tok;
 495                 struct sk_buff *skb;
 496                 struct ieee80211_hdr *ieee80211hdr;
 497                 unsigned long flags;
 498
 499                 pkt_rc = val & 0xFF;
 500                 tok = val & (1 << 15);
 501                 seq_no = (val >> 16) & 0xFFF;
 502
 503                 spin_lock_irqsave(&priv->b_tx_status.queue.lock, flags);
 504                 skb_queue_reverse_walk(&priv->b_tx_status.queue, skb) {
 505                         ieee80211hdr = (struct ieee80211_hdr *)skb->data;
 506
 507                         /*
 508                          * While testing, it was discovered that the seq_no
 509                          * doesn't actually contains the sequence number.
 510                          * Instead of returning just the 12 bits of sequence
 511                          * number, hardware is returning entire sequence control
 512                          * (fragment number plus sequence number) in a 12 bit
 513                          * only field overflowing after some time. As a
 514                          * workaround, just consider the lower bits, and expect
 515                          * it's unlikely we wrongly ack some sent data
 516                          */
 517                         if ((le16_to_cpu(ieee80211hdr->seq_ctrl)
 518                             & 0xFFF) == seq_no)
 519                                 break;
 520                 }
 521                 if (skb != (struct sk_buff *) &priv->b_tx_status.queue) {
 522                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 523
 524                         __skb_unlink(skb, &priv->b_tx_status.queue);
 525                         if (tok)
 526                                 info->flags |= IEEE80211_TX_STAT_ACK;
 527                         info->status.rates[0].count = pkt_rc + 1;
 528
 529                         ieee80211_tx_status_irqsafe(hw, skb);
 530                 }
 531                 spin_unlock_irqrestore(&priv->b_tx_status.queue.lock, flags);
 532         }
 533
 534         usb_anchor_urb(urb, &priv->anchored);
 535         if (usb_submit_urb(urb, GFP_ATOMIC))
 536                 usb_unanchor_urb(urb);
 537 }
 538
 539 static int rtl8187b_init_status_urb(struct ieee80211_hw *dev)
 540 {
 541         struct rtl8187_priv *priv = dev->priv;
 542         struct urb *entry;
 543         int ret = 0;
 544
 545         entry = usb_alloc_urb(0, GFP_KERNEL);
 546         if (!entry)
 547                 return -ENOMEM;
 548
 549         usb_fill_bulk_urb(entry, priv->udev, usb_rcvbulkpipe(priv->udev, 9),
 550                           &priv->b_tx_status.buf, sizeof(priv->b_tx_status.buf),
 551                           rtl8187b_status_cb, dev);
 552
 553         usb_anchor_urb(entry, &priv->anchored);
 554         ret = usb_submit_urb(entry, GFP_KERNEL);
 555         if (ret)
 556                 usb_unanchor_urb(entry);
 557         usb_free_urb(entry);
 558
 559         return ret;
 560 }
 561
 562 static void rtl8187_set_anaparam(struct rtl8187_priv *priv, bool rfon)
 563 {
 564         u32 anaparam, anaparam2;
 565         u8 anaparam3, reg;
 566
 567         if (!priv->is_rtl8187b) {
 568                 if (rfon) {
 569                         anaparam = RTL8187_RTL8225_ANAPARAM_ON;
 570                         anaparam2 = RTL8187_RTL8225_ANAPARAM2_ON;
 571                 } else {
 572                         anaparam = RTL8187_RTL8225_ANAPARAM_OFF;
 573                         anaparam2 = RTL8187_RTL8225_ANAPARAM2_OFF;
 574                 }
 575         } else {
 576                 if (rfon) {
 577                         anaparam = RTL8187B_RTL8225_ANAPARAM_ON;
 578                         anaparam2 = RTL8187B_RTL8225_ANAPARAM2_ON;
 579                         anaparam3 = RTL8187B_RTL8225_ANAPARAM3_ON;
 580                 } else {
 581                         anaparam = RTL8187B_RTL8225_ANAPARAM_OFF;
 582                         anaparam2 = RTL8187B_RTL8225_ANAPARAM2_OFF;
 583                         anaparam3 = RTL8187B_RTL8225_ANAPARAM3_OFF;
 584                 }
 585         }
 586
 587         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 588                          RTL818X_EEPROM_CMD_CONFIG);
 589         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 590         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE;
 591         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 592         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
 593         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, anaparam2);
 594         if (priv->is_rtl8187b)
 595                 rtl818x_iowrite8(priv, &priv->map->ANAPARAM3, anaparam3);
 596         reg &= ~RTL818X_CONFIG3_ANAPARAM_WRITE;
 597         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 598         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 599                          RTL818X_EEPROM_CMD_NORMAL);
 600 }
 601
 602 static int rtl8187_cmd_reset(struct ieee80211_hw *dev)
 603 {
 604         struct rtl8187_priv *priv = dev->priv;
 605         u8 reg;
 606         int i;
 607
 608         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 609         reg &= (1 << 1);
 610         reg |= RTL818X_CMD_RESET;
 611         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 612
 613         i = 10;
 614         do {
 615                 msleep(2);
 616                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 617                       RTL818X_CMD_RESET))
 618                         break;
 619         } while (--i);
 620
 621         if (!i) {
 622                 wiphy_err(dev->wiphy, "Reset timeout!\n");
 623                 return -ETIMEDOUT;
 624         }
 625
 626         /* reload registers from eeprom */
 627         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 628
 629         i = 10;
 630         do {
 631                 msleep(4);
 632                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 633                       RTL818X_EEPROM_CMD_CONFIG))
 634                         break;
 635         } while (--i);
 636
 637         if (!i) {
 638                 wiphy_err(dev->wiphy, "eeprom reset timeout!\n");
 639                 return -ETIMEDOUT;
 640         }
 641
 642         return 0;
 643 }
 644
 645 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 646 {
 647         struct rtl8187_priv *priv = dev->priv;
 648         u8 reg;
 649         int res;
 650
 651         /* reset */
 652         rtl8187_set_anaparam(priv, true);
 653
 654         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 655
 656         msleep(200);
 657         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 658         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 659         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 660         msleep(200);
 661
 662         res = rtl8187_cmd_reset(dev);
 663         if (res)
 664                 return res;
 665
 666         rtl8187_set_anaparam(priv, true);
 667
 668         /* setup card */
 669         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 670         rtl818x_iowrite8(priv, &priv->map->GPIO0, 0);
 671
 672         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 673         rtl818x_iowrite8(priv, &priv->map->GPIO0, 1);
 674         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 675
 676         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 677
 678         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 679         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 680         reg &= 0x3F;
 681         reg |= 0x80;
 682         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 683
 684         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 685
 686         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 687         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 688         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0);
 689
 690         // TODO: set RESP_RATE and BRSR properly
 691         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 692         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 693
 694         /* host_usb_init */
 695         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 696         rtl818x_iowrite8(priv, &priv->map->GPIO0, 0);
 697         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 698         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 699         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 700         rtl818x_iowrite8(priv, &priv->map->GPIO0, 0x20);
 701         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 702         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 703         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 704         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 705         msleep(100);
 706
 707         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 708         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 709         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 710         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 711                          RTL818X_EEPROM_CMD_CONFIG);
 712         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 713         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 714                          RTL818X_EEPROM_CMD_NORMAL);
 715         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 716         msleep(100);
 717
 718         priv->rf->init(dev);
 719
 720         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 721         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 722         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 723         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 724         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 725         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 726         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 727
 728         return 0;
 729 }
 730
 731 static const u8 rtl8187b_reg_table[][3] = {
 732         {0xF0, 0x32, 0}, {0xF1, 0x32, 0}, {0xF2, 0x00, 0}, {0xF3, 0x00, 0},
 733         {0xF4, 0x32, 0}, {0xF5, 0x43, 0}, {0xF6, 0x00, 0}, {0xF7, 0x00, 0},
 734         {0xF8, 0x46, 0}, {0xF9, 0xA4, 0}, {0xFA, 0x00, 0}, {0xFB, 0x00, 0},
 735         {0xFC, 0x96, 0}, {0xFD, 0xA4, 0}, {0xFE, 0x00, 0}, {0xFF, 0x00, 0},
 736
 737         {0x58, 0x4B, 1}, {0x59, 0x00, 1}, {0x5A, 0x4B, 1}, {0x5B, 0x00, 1},
 738         {0x60, 0x4B, 1}, {0x61, 0x09, 1}, {0x62, 0x4B, 1}, {0x63, 0x09, 1},
 739         {0xCE, 0x0F, 1}, {0xCF, 0x00, 1}, {0xF0, 0x4E, 1}, {0xF1, 0x01, 1},
 740         {0xF2, 0x02, 1}, {0xF3, 0x03, 1}, {0xF4, 0x04, 1}, {0xF5, 0x05, 1},
 741         {0xF6, 0x06, 1}, {0xF7, 0x07, 1}, {0xF8, 0x08, 1},
 742
 743         {0x4E, 0x00, 2}, {0x0C, 0x04, 2}, {0x21, 0x61, 2}, {0x22, 0x68, 2},
 744         {0x23, 0x6F, 2}, {0x24, 0x76, 2}, {0x25, 0x7D, 2}, {0x26, 0x84, 2},
 745         {0x27, 0x8D, 2}, {0x4D, 0x08, 2}, {0x50, 0x05, 2}, {0x51, 0xF5, 2},
 746         {0x52, 0x04, 2}, {0x53, 0xA0, 2}, {0x54, 0x1F, 2}, {0x55, 0x23, 2},
 747         {0x56, 0x45, 2}, {0x57, 0x67, 2}, {0x58, 0x08, 2}, {0x59, 0x08, 2},
 748         {0x5A, 0x08, 2}, {0x5B, 0x08, 2}, {0x60, 0x08, 2}, {0x61, 0x08, 2},
 749         {0x62, 0x08, 2}, {0x63, 0x08, 2}, {0x64, 0xCF, 2},
 750
 751         {0x5B, 0x40, 0}, {0x84, 0x88, 0}, {0x85, 0x24, 0}, {0x88, 0x54, 0},
 752         {0x8B, 0xB8, 0}, {0x8C, 0x07, 0}, {0x8D, 0x00, 0}, {0x94, 0x1B, 0},
 753         {0x95, 0x12, 0}, {0x96, 0x00, 0}, {0x97, 0x06, 0}, {0x9D, 0x1A, 0},
 754         {0x9F, 0x10, 0}, {0xB4, 0x22, 0}, {0xBE, 0x80, 0}, {0xDB, 0x00, 0},
 755         {0xEE, 0x00, 0}, {0x4C, 0x00, 2},
 756
 757         {0x9F, 0x00, 3}, {0x8C, 0x01, 0}, {0x8D, 0x10, 0}, {0x8E, 0x08, 0},
 758         {0x8F, 0x00, 0}
 759 };
 760
 761 static int rtl8187b_init_hw(struct ieee80211_hw *dev)
 762 {
 763         struct rtl8187_priv *priv = dev->priv;
 764         int res, i;
 765         u8 reg;
 766
 767         rtl8187_set_anaparam(priv, true);
 768
 769         /* Reset PLL sequence on 8187B. Realtek note: reduces power
 770          * consumption about 30 mA */
 771         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0x10);
 772         reg = rtl818x_ioread8(priv, (u8 *)0xFF62);
 773         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg & ~(1 << 5));
 774         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg | (1 << 5));
 775
 776         res = rtl8187_cmd_reset(dev);
 777         if (res)
 778                 return res;
 779
 780         rtl8187_set_anaparam(priv, true);
 781
 782         /* BRSR (Basic Rate Set Register) on 8187B looks to be the same as
 783          * RESP_RATE on 8187L in Realtek sources: each bit should be each
 784          * one of the 12 rates, all are enabled */
 785         rtl818x_iowrite16(priv, (__le16 *)0xFF34, 0x0FFF);
 786
 787         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 788         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 789         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 790
 791         /* Auto Rate Fallback Register (ARFR): 1M-54M setting */
 792         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFE0, 0x0FFF, 1);
 793         rtl818x_iowrite8_idx(priv, (u8 *)0xFFE2, 0x00, 1);
 794
 795         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFD4, 0xFFFF, 1);
 796
 797         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 798                          RTL818X_EEPROM_CMD_CONFIG);
 799         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 800         rtl818x_iowrite8(priv, &priv->map->CONFIG1, (reg & 0x3F) | 0x80);
 801         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 802                          RTL818X_EEPROM_CMD_NORMAL);
 803
 804         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 805         for (i = 0; i < ARRAY_SIZE(rtl8187b_reg_table); i++) {
 806                 rtl818x_iowrite8_idx(priv,
 807                                      (u8 *)(uintptr_t)
 808                                      (rtl8187b_reg_table[i][0] | 0xFF00),
 809                                      rtl8187b_reg_table[i][1],
 810                                      rtl8187b_reg_table[i][2]);
 811         }
 812
 813         rtl818x_iowrite16(priv, &priv->map->TID_AC_MAP, 0xFA50);
 814         rtl818x_iowrite16(priv, &priv->map->INT_MIG, 0);
 815
 816         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF0, 0, 1);
 817         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF4, 0, 1);
 818         rtl818x_iowrite8_idx(priv, (u8 *)0xFFF8, 0, 1);
 819
 820         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x00004001);
 821
 822         /* RFSW_CTRL register */
 823         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x569A, 2);
 824
 825         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x0480);
 826         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x2488);
 827         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FFF);
 828         msleep(100);
 829
 830         priv->rf->init(dev);
 831
 832         reg = RTL818X_CMD_TX_ENABLE | RTL818X_CMD_RX_ENABLE;
 833         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 834         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 835
 836         rtl818x_iowrite8(priv, (u8 *)0xFE41, 0xF4);
 837         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x00);
 838         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 839         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 840         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x0F);
 841         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 842         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 843
 844         reg = rtl818x_ioread8(priv, (u8 *)0xFFDB);
 845         rtl818x_iowrite8(priv, (u8 *)0xFFDB, reg | (1 << 2));
 846         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x59FA, 3);
 847         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF74, 0x59D2, 3);
 848         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF76, 0x59D2, 3);
 849         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF78, 0x19FA, 3);
 850         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7A, 0x19FA, 3);
 851         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7C, 0x00D0, 3);
 852         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0);
 853         rtl818x_iowrite8_idx(priv, (u8 *)0xFF80, 0x0F, 1);
 854         rtl818x_iowrite8_idx(priv, (u8 *)0xFF83, 0x03, 1);
 855         rtl818x_iowrite8(priv, (u8 *)0xFFDA, 0x10);
 856         rtl818x_iowrite8_idx(priv, (u8 *)0xFF4D, 0x08, 2);
 857
 858         rtl818x_iowrite32(priv, &priv->map->HSSI_PARA, 0x0600321B);
 859
 860         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFEC, 0x0800, 1);
 861
 862         priv->slot_time = 0x9;
 863         priv->aifsn[0] = 2; /* AIFSN[AC_VO] */
 864         priv->aifsn[1] = 2; /* AIFSN[AC_VI] */
 865         priv->aifsn[2] = 7; /* AIFSN[AC_BK] */
 866         priv->aifsn[3] = 3; /* AIFSN[AC_BE] */
 867         rtl818x_iowrite8(priv, &priv->map->ACM_CONTROL, 0);
 868
 869         /* ENEDCA flag must always be set, transmit issues? */
 870         rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_ENEDCA);
 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          * waiting in the queue, the retry count will be the total for all.
 881          * The "error" may matter for purposes of rate setting, but there is
 882          * no other choice with this hardware.
 883          */
 884         struct rtl8187_priv *priv = container_of(work, struct rtl8187_priv,
 885                                     work.work);
 886         struct ieee80211_tx_info *info;
 887         struct ieee80211_hw *dev = priv->dev;
 888         static u16 retry;
 889         u16 tmp;
 890         u16 avg_retry;
 891         int length;
 892
 893         mutex_lock(&priv->conf_mutex);
 894         tmp = rtl818x_ioread16(priv, (__le16 *)0xFFFA);
 895         length = skb_queue_len(&priv->b_tx_status.queue);
 896         if (unlikely(!length))
 897                 length = 1;
 898         if (unlikely(tmp < retry))
 899                 tmp = retry;
 900         avg_retry = (tmp - retry) / length;
 901         while (skb_queue_len(&priv->b_tx_status.queue) > 0) {
 902                 struct sk_buff *old_skb;
 903
 904                 old_skb = skb_dequeue(&priv->b_tx_status.queue);
 905                 info = IEEE80211_SKB_CB(old_skb);
 906                 info->status.rates[0].count = avg_retry + 1;
 907                 if (info->status.rates[0].count > RETRY_COUNT)
 908                         info->flags &= ~IEEE80211_TX_STAT_ACK;
 909                 ieee80211_tx_status_irqsafe(dev, old_skb);
 910         }
 911         retry = tmp;
 912         mutex_unlock(&priv->conf_mutex);
 913 }
 914
 915 static int rtl8187_start(struct ieee80211_hw *dev)
 916 {
 917         struct rtl8187_priv *priv = dev->priv;
 918         u32 reg;
 919         int ret;
 920
 921         mutex_lock(&priv->conf_mutex);
 922
 923         ret = (!priv->is_rtl8187b) ? rtl8187_init_hw(dev) :
 924                                      rtl8187b_init_hw(dev);
 925         if (ret)
 926                 goto rtl8187_start_exit;
 927
 928         init_usb_anchor(&priv->anchored);
 929         priv->dev = dev;
 930
 931         if (priv->is_rtl8187b) {
 932                 reg = RTL818X_RX_CONF_MGMT |
 933                       RTL818X_RX_CONF_DATA |
 934                       RTL818X_RX_CONF_BROADCAST |
 935                       RTL818X_RX_CONF_NICMAC |
 936                       RTL818X_RX_CONF_BSSID |
 937                       (7 << 13 /* RX FIFO threshold NONE */) |
 938                       (7 << 10 /* MAX RX DMA */) |
 939                       RTL818X_RX_CONF_RX_AUTORESETPHY |
 940                       RTL818X_RX_CONF_ONLYERLPKT |
 941                       RTL818X_RX_CONF_MULTICAST;
 942                 priv->rx_conf = reg;
 943                 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 944
 945                 reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 946                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 947                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 948                 reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 949                 rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 950
 951                 rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 952                                   RTL818X_TX_CONF_HW_SEQNUM |
 953                                   RTL818X_TX_CONF_DISREQQSIZE |
 954                                   (RETRY_COUNT << 8  /* short retry limit */) |
 955                                   (RETRY_COUNT << 0  /* long retry limit */) |
 956                                   (7 << 21 /* MAX TX DMA */));
 957                 ret = rtl8187_init_urbs(dev);
 958                 if (ret)
 959                         goto rtl8187_start_exit;
 960                 ret = rtl8187b_init_status_urb(dev);
 961                 if (ret)
 962                         usb_kill_anchored_urbs(&priv->anchored);
 963                 goto rtl8187_start_exit;
 964         }
 965
 966         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 967
 968         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 969         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 970
 971         ret = rtl8187_init_urbs(dev);
 972         if (ret)
 973                 goto rtl8187_start_exit;
 974
 975         reg = RTL818X_RX_CONF_ONLYERLPKT |
 976               RTL818X_RX_CONF_RX_AUTORESETPHY |
 977               RTL818X_RX_CONF_BSSID |
 978               RTL818X_RX_CONF_MGMT |
 979               RTL818X_RX_CONF_DATA |
 980               (7 << 13 /* RX FIFO threshold NONE */) |
 981               (7 << 10 /* MAX RX DMA */) |
 982               RTL818X_RX_CONF_BROADCAST |
 983               RTL818X_RX_CONF_NICMAC;
 984
 985         priv->rx_conf = reg;
 986         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 987
 988         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 989         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 990         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 991         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 992
 993         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 994         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 995         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 996         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 997         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 998
 999         reg  = RTL818X_TX_CONF_CW_MIN |
1000                (7 << 21 /* MAX TX DMA */) |
1001                RTL818X_TX_CONF_NO_ICV;
1002         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
1003
1004         reg = rtl818x_ioread8(priv, &priv->map->CMD);
1005         reg |= RTL818X_CMD_TX_ENABLE;
1006         reg |= RTL818X_CMD_RX_ENABLE;
1007         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
1008         INIT_DELAYED_WORK(&priv->work, rtl8187_work);
1009
1010 rtl8187_start_exit:
1011         mutex_unlock(&priv->conf_mutex);
1012         return ret;
1013 }
1014
1015 static void rtl8187_stop(struct ieee80211_hw *dev)
1016 {
1017         struct rtl8187_priv *priv = dev->priv;
1018         struct sk_buff *skb;
1019         u32 reg;
1020
1021         mutex_lock(&priv->conf_mutex);
1022         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
1023
1024         reg = rtl818x_ioread8(priv, &priv->map->CMD);
1025         reg &= ~RTL818X_CMD_TX_ENABLE;
1026         reg &= ~RTL818X_CMD_RX_ENABLE;
1027         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
1028
1029         priv->rf->stop(dev);
1030         rtl8187_set_anaparam(priv, false);
1031
1032         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1033         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
1034         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
1035         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1036
1037         while ((skb = skb_dequeue(&priv->b_tx_status.queue)))
1038                 dev_kfree_skb_any(skb);
1039
1040         usb_kill_anchored_urbs(&priv->anchored);
1041         mutex_unlock(&priv->conf_mutex);
1042
1043         if (!priv->is_rtl8187b)
1044                 cancel_delayed_work_sync(&priv->work);
1045 }
1046
1047 static u64 rtl8187_get_tsf(struct ieee80211_hw *dev, struct ieee80211_vif *vif)
1048 {
1049         struct rtl8187_priv *priv = dev->priv;
1050
1051         return rtl818x_ioread32(priv, &priv->map->TSFT[0]) |
1052                (u64)(rtl818x_ioread32(priv, &priv->map->TSFT[1])) << 32;
1053 }
1054
1055
1056 static void rtl8187_beacon_work(struct work_struct *work)
1057 {
1058         struct rtl8187_vif *vif_priv =
1059                 container_of(work, struct rtl8187_vif, beacon_work.work);
1060         struct ieee80211_vif *vif =
1061                 container_of((void *)vif_priv, struct ieee80211_vif, drv_priv);
1062         struct ieee80211_hw *dev = vif_priv->dev;
1063         struct ieee80211_mgmt *mgmt;
1064         struct sk_buff *skb;
1065
1066         /* don't overflow the tx ring */
1067         if (ieee80211_queue_stopped(dev, 0))
1068                 goto resched;
1069
1070         /* grab a fresh beacon */
1071         skb = ieee80211_beacon_get(dev, vif);
1072         if (!skb)
1073                 goto resched;
1074
1075         /*
1076          * update beacon timestamp w/ TSF value
1077          * TODO: make hardware update beacon timestamp
1078          */
1079         mgmt = (struct ieee80211_mgmt *)skb->data;
1080         mgmt->u.beacon.timestamp = cpu_to_le64(rtl8187_get_tsf(dev, vif));
1081
1082         /* TODO: use actual beacon queue */
1083         skb_set_queue_mapping(skb, 0);
1084
1085         rtl8187_tx(dev, NULL, skb);
1086
1087 resched:
1088         /*
1089          * schedule next beacon
1090          * TODO: use hardware support for beacon timing
1091          */
1092         schedule_delayed_work(&vif_priv->beacon_work,
1093                         usecs_to_jiffies(1024 * vif->bss_conf.beacon_int));
1094 }
1095
1096
1097 static int rtl8187_add_interface(struct ieee80211_hw *dev,
1098                                  struct ieee80211_vif *vif)
1099 {
1100         struct rtl8187_priv *priv = dev->priv;
1101         struct rtl8187_vif *vif_priv;
1102         int i;
1103         int ret = -EOPNOTSUPP;
1104
1105         mutex_lock(&priv->conf_mutex);
1106         if (priv->vif)
1107                 goto exit;
1108
1109         switch (vif->type) {
1110         case NL80211_IFTYPE_STATION:
1111         case NL80211_IFTYPE_ADHOC:
1112                 break;
1113         default:
1114                 goto exit;
1115         }
1116
1117         ret = 0;
1118         priv->vif = vif;
1119
1120         /* Initialize driver private area */
1121         vif_priv = (struct rtl8187_vif *)&vif->drv_priv;
1122         vif_priv->dev = dev;
1123         INIT_DELAYED_WORK(&vif_priv->beacon_work, rtl8187_beacon_work);
1124         vif_priv->enable_beacon = false;
1125
1126
1127         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1128         for (i = 0; i < ETH_ALEN; i++)
1129                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
1130                                  ((u8 *)vif->addr)[i]);
1131         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1132
1133 exit:
1134         mutex_unlock(&priv->conf_mutex);
1135         return ret;
1136 }
1137
1138 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
1139                                      struct ieee80211_vif *vif)
1140 {
1141         struct rtl8187_priv *priv = dev->priv;
1142         mutex_lock(&priv->conf_mutex);
1143         priv->vif = NULL;
1144         mutex_unlock(&priv->conf_mutex);
1145 }
1146
1147 static int rtl8187_config(struct ieee80211_hw *dev, u32 changed)
1148 {
1149         struct rtl8187_priv *priv = dev->priv;
1150         struct ieee80211_conf *conf = &dev->conf;
1151         u32 reg;
1152
1153         mutex_lock(&priv->conf_mutex);
1154         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1155         /* Enable TX loopback on MAC level to avoid TX during channel
1156          * changes, as this has be seen to causes problems and the
1157          * card will stop work until next reset
1158          */
1159         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
1160                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
1161         priv->rf->set_chan(dev, conf);
1162         msleep(10);
1163         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
1164
1165         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
1166         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
1167         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
1168         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
1169         mutex_unlock(&priv->conf_mutex);
1170         return 0;
1171 }
1172
1173 /*
1174  * With 8187B, AC_*_PARAM clashes with FEMR definition in struct rtl818x_csr for
1175  * example. Thus we have to use raw values for AC_*_PARAM register addresses.
1176  */
1177 static __le32 *rtl8187b_ac_addr[4] = {
1178         (__le32 *) 0xFFF0, /* AC_VO */
1179         (__le32 *) 0xFFF4, /* AC_VI */
1180         (__le32 *) 0xFFFC, /* AC_BK */
1181         (__le32 *) 0xFFF8, /* AC_BE */
1182 };
1183
1184 #define SIFS_TIME 0xa
1185
1186 static void rtl8187_conf_erp(struct rtl8187_priv *priv, bool use_short_slot,
1187                              bool use_short_preamble)
1188 {
1189         if (priv->is_rtl8187b) {
1190                 u8 difs, eifs;
1191                 u16 ack_timeout;
1192                 int queue;
1193
1194                 if (use_short_slot) {
1195                         priv->slot_time = 0x9;
1196                         difs = 0x1c;
1197                         eifs = 0x53;
1198                 } else {
1199                         priv->slot_time = 0x14;
1200                         difs = 0x32;
1201                         eifs = 0x5b;
1202                 }
1203                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1204                 rtl818x_iowrite8(priv, &priv->map->SLOT, priv->slot_time);
1205                 rtl818x_iowrite8(priv, &priv->map->DIFS, difs);
1206
1207                 /*
1208                  * BRSR+1 on 8187B is in fact EIFS register
1209                  * Value in units of 4 us
1210                  */
1211                 rtl818x_iowrite8(priv, (u8 *)&priv->map->BRSR + 1, eifs);
1212
1213                 /*
1214                  * For 8187B, CARRIER_SENSE_COUNTER is in fact ack timeout
1215                  * register. In units of 4 us like eifs register
1216                  * ack_timeout = ack duration + plcp + difs + preamble
1217                  */
1218                 ack_timeout = 112 + 48 + difs;
1219                 if (use_short_preamble)
1220                         ack_timeout += 72;
1221                 else
1222                         ack_timeout += 144;
1223                 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER,
1224                                  DIV_ROUND_UP(ack_timeout, 4));
1225
1226                 for (queue = 0; queue < 4; queue++)
1227                         rtl818x_iowrite8(priv, (u8 *) rtl8187b_ac_addr[queue],
1228                                          priv->aifsn[queue] * priv->slot_time +
1229                                          SIFS_TIME);
1230         } else {
1231                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1232                 if (use_short_slot) {
1233                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
1234                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
1235                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
1236                 } else {
1237                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
1238                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
1239                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
1240                 }
1241         }
1242 }
1243
1244 static void rtl8187_bss_info_changed(struct ieee80211_hw *dev,
1245                                      struct ieee80211_vif *vif,
1246                                      struct ieee80211_bss_conf *info,
1247                                      u32 changed)
1248 {
1249         struct rtl8187_priv *priv = dev->priv;
1250         struct rtl8187_vif *vif_priv;
1251         int i;
1252         u8 reg;
1253
1254         vif_priv = (struct rtl8187_vif *)&vif->drv_priv;
1255
1256         if (changed & BSS_CHANGED_BSSID) {
1257                 mutex_lock(&priv->conf_mutex);
1258                 for (i = 0; i < ETH_ALEN; i++)
1259                         rtl818x_iowrite8(priv, &priv->map->BSSID[i],
1260                                          info->bssid[i]);
1261
1262                 if (priv->is_rtl8187b)
1263                         reg = RTL818X_MSR_ENEDCA;
1264                 else
1265                         reg = 0;
1266
1267                 if (is_valid_ether_addr(info->bssid)) {
1268                         if (vif->type == NL80211_IFTYPE_ADHOC)
1269                                 reg |= RTL818X_MSR_ADHOC;
1270                         else
1271                                 reg |= RTL818X_MSR_INFRA;
1272                 }
1273                 else
1274                         reg |= RTL818X_MSR_NO_LINK;
1275
1276                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1277
1278                 mutex_unlock(&priv->conf_mutex);
1279         }
1280
1281         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE))
1282                 rtl8187_conf_erp(priv, info->use_short_slot,
1283                                  info->use_short_preamble);
1284
1285         if (changed & BSS_CHANGED_BEACON_ENABLED)
1286                 vif_priv->enable_beacon = info->enable_beacon;
1287
1288         if (changed & (BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON)) {
1289                 cancel_delayed_work_sync(&vif_priv->beacon_work);
1290                 if (vif_priv->enable_beacon)
1291                         schedule_work(&vif_priv->beacon_work.work);
1292         }
1293
1294 }
1295
1296 static u64 rtl8187_prepare_multicast(struct ieee80211_hw *dev,
1297                                      struct netdev_hw_addr_list *mc_list)
1298 {
1299         return netdev_hw_addr_list_count(mc_list);
1300 }
1301
1302 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
1303                                      unsigned int changed_flags,
1304                                      unsigned int *total_flags,
1305                                      u64 multicast)
1306 {
1307         struct rtl8187_priv *priv = dev->priv;
1308
1309         if (changed_flags & FIF_FCSFAIL)
1310                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
1311         if (changed_flags & FIF_CONTROL)
1312                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
1313         if (changed_flags & FIF_OTHER_BSS)
1314                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
1315         if (*total_flags & FIF_ALLMULTI || multicast > 0)
1316                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
1317         else
1318                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
1319
1320         *total_flags = 0;
1321
1322         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
1323                 *total_flags |= FIF_FCSFAIL;
1324         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
1325                 *total_flags |= FIF_CONTROL;
1326         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
1327                 *total_flags |= FIF_OTHER_BSS;
1328         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
1329                 *total_flags |= FIF_ALLMULTI;
1330
1331         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
1332 }
1333
1334 static int rtl8187_conf_tx(struct ieee80211_hw *dev,
1335                            struct ieee80211_vif *vif, u16 queue,
1336                            const struct ieee80211_tx_queue_params *params)
1337 {
1338         struct rtl8187_priv *priv = dev->priv;
1339         u8 cw_min, cw_max;
1340
1341         if (queue > 3)
1342                 return -EINVAL;
1343
1344         cw_min = fls(params->cw_min);
1345         cw_max = fls(params->cw_max);
1346
1347         if (priv->is_rtl8187b) {
1348                 priv->aifsn[queue] = params->aifs;
1349
1350                 /*
1351                  * This is the structure of AC_*_PARAM registers in 8187B:
1352                  * - TXOP limit field, bit offset = 16
1353                  * - ECWmax, bit offset = 12
1354                  * - ECWmin, bit offset = 8
1355                  * - AIFS, bit offset = 0
1356                  */
1357                 rtl818x_iowrite32(priv, rtl8187b_ac_addr[queue],
1358                                   (params->txop << 16) | (cw_max << 12) |
1359                                   (cw_min << 8) | (params->aifs *
1360                                   priv->slot_time + SIFS_TIME));
1361         } else {
1362                 if (queue != 0)
1363                         return -EINVAL;
1364
1365                 rtl818x_iowrite8(priv, &priv->map->CW_VAL,
1366                                  cw_min | (cw_max << 4));
1367         }
1368         return 0;
1369 }
1370
1371
1372 static const struct ieee80211_ops rtl8187_ops = {
1373         .tx                     = rtl8187_tx,
1374         .start                  = rtl8187_start,
1375         .stop                   = rtl8187_stop,
1376         .add_interface          = rtl8187_add_interface,
1377         .remove_interface       = rtl8187_remove_interface,
1378         .config                 = rtl8187_config,
1379         .bss_info_changed       = rtl8187_bss_info_changed,
1380         .prepare_multicast      = rtl8187_prepare_multicast,
1381         .configure_filter       = rtl8187_configure_filter,
1382         .conf_tx                = rtl8187_conf_tx,
1383         .rfkill_poll            = rtl8187_rfkill_poll,
1384         .get_tsf                = rtl8187_get_tsf,
1385 };
1386
1387 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
1388 {
1389         struct ieee80211_hw *dev = eeprom->data;
1390         struct rtl8187_priv *priv = dev->priv;
1391         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1392
1393         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
1394         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
1395         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
1396         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
1397 }
1398
1399 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
1400 {
1401         struct ieee80211_hw *dev = eeprom->data;
1402         struct rtl8187_priv *priv = dev->priv;
1403         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
1404
1405         if (eeprom->reg_data_in)
1406                 reg |= RTL818X_EEPROM_CMD_WRITE;
1407         if (eeprom->reg_data_out)
1408                 reg |= RTL818X_EEPROM_CMD_READ;
1409         if (eeprom->reg_data_clock)
1410                 reg |= RTL818X_EEPROM_CMD_CK;
1411         if (eeprom->reg_chip_select)
1412                 reg |= RTL818X_EEPROM_CMD_CS;
1413
1414         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
1415         udelay(10);
1416 }
1417
1418 static int rtl8187_probe(struct usb_interface *intf,
1419                                    const struct usb_device_id *id)
1420 {
1421         struct usb_device *udev = interface_to_usbdev(intf);
1422         struct ieee80211_hw *dev;
1423         struct rtl8187_priv *priv;
1424         struct eeprom_93cx6 eeprom;
1425         struct ieee80211_channel *channel;
1426         const char *chip_name;
1427         u16 txpwr, reg;
1428         u16 product_id = le16_to_cpu(udev->descriptor.idProduct);
1429         int err, i;
1430         u8 mac_addr[ETH_ALEN];
1431
1432         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
1433         if (!dev) {
1434                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
1435                 return -ENOMEM;
1436         }
1437
1438         priv = dev->priv;
1439         priv->is_rtl8187b = (id->driver_info == DEVICE_RTL8187B);
1440
1441         /* allocate "DMA aware" buffer for register accesses */
1442         priv->io_dmabuf = kmalloc(sizeof(*priv->io_dmabuf), GFP_KERNEL);
1443         if (!priv->io_dmabuf) {
1444                 err = -ENOMEM;
1445                 goto err_free_dev;
1446         }
1447         mutex_init(&priv->io_mutex);
1448
1449         SET_IEEE80211_DEV(dev, &intf->dev);
1450         usb_set_intfdata(intf, dev);
1451         priv->udev = udev;
1452
1453         usb_get_dev(udev);
1454
1455         skb_queue_head_init(&priv->rx_queue);
1456
1457         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
1458         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
1459
1460         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
1461         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
1462         priv->map = (struct rtl818x_csr *)0xFF00;
1463
1464         priv->band.band = IEEE80211_BAND_2GHZ;
1465         priv->band.channels = priv->channels;
1466         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
1467         priv->band.bitrates = priv->rates;
1468         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
1469         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
1470
1471
1472         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1473                      IEEE80211_HW_SIGNAL_DBM |
1474                      IEEE80211_HW_RX_INCLUDES_FCS;
1475         /* Initialize rate-control variables */
1476         dev->max_rates = 1;
1477         dev->max_rate_tries = RETRY_COUNT;
1478
1479         eeprom.data = dev;
1480         eeprom.register_read = rtl8187_eeprom_register_read;
1481         eeprom.register_write = rtl8187_eeprom_register_write;
1482         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
1483                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
1484         else
1485                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
1486
1487         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1488         udelay(10);
1489
1490         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
1491                                (__le16 __force *)mac_addr, 3);
1492         if (!is_valid_ether_addr(mac_addr)) {
1493                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
1494                        "generated MAC address\n");
1495                 eth_random_addr(mac_addr);
1496         }
1497         SET_IEEE80211_PERM_ADDR(dev, mac_addr);
1498
1499         channel = priv->channels;
1500         for (i = 0; i < 3; i++) {
1501                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
1502                                   &txpwr);
1503                 (*channel++).hw_value = txpwr & 0xFF;
1504                 (*channel++).hw_value = txpwr >> 8;
1505         }
1506         for (i = 0; i < 2; i++) {
1507                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
1508                                   &txpwr);
1509                 (*channel++).hw_value = txpwr & 0xFF;
1510                 (*channel++).hw_value = txpwr >> 8;
1511         }
1512
1513         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
1514                           &priv->txpwr_base);
1515
1516         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
1517         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
1518         /* 0 means asic B-cut, we should use SW 3 wire
1519          * bit-by-bit banging for radio. 1 means we can use
1520          * USB specific request to write radio registers */
1521         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
1522         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
1523         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1524
1525         if (!priv->is_rtl8187b) {
1526                 u32 reg32;
1527                 reg32 = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1528                 reg32 &= RTL818X_TX_CONF_HWVER_MASK;
1529                 switch (reg32) {
1530                 case RTL818X_TX_CONF_R8187vD_B:
1531                         /* Some RTL8187B devices have a USB ID of 0x8187
1532                          * detect them here */
1533                         chip_name = "RTL8187BvB(early)";
1534                         priv->is_rtl8187b = 1;
1535                         priv->hw_rev = RTL8187BvB;
1536                         break;
1537                 case RTL818X_TX_CONF_R8187vD:
1538                         chip_name = "RTL8187vD";
1539                         break;
1540                 default:
1541                         chip_name = "RTL8187vB (default)";
1542                 }
1543        } else {
1544                 /*
1545                  * Force USB request to write radio registers for 8187B, Realtek
1546                  * only uses it in their sources
1547                  */
1548                 /*if (priv->asic_rev == 0) {
1549                         printk(KERN_WARNING "rtl8187: Forcing use of USB "
1550                                "requests to write to radio registers\n");
1551                         priv->asic_rev = 1;
1552                 }*/
1553                 switch (rtl818x_ioread8(priv, (u8 *)0xFFE1)) {
1554                 case RTL818X_R8187B_B:
1555                         chip_name = "RTL8187BvB";
1556                         priv->hw_rev = RTL8187BvB;
1557                         break;
1558                 case RTL818X_R8187B_D:
1559                         chip_name = "RTL8187BvD";
1560                         priv->hw_rev = RTL8187BvD;
1561                         break;
1562                 case RTL818X_R8187B_E:
1563                         chip_name = "RTL8187BvE";
1564                         priv->hw_rev = RTL8187BvE;
1565                         break;
1566                 default:
1567                         chip_name = "RTL8187BvB (default)";
1568                         priv->hw_rev = RTL8187BvB;
1569                 }
1570         }
1571
1572         if (!priv->is_rtl8187b) {
1573                 for (i = 0; i < 2; i++) {
1574                         eeprom_93cx6_read(&eeprom,
1575                                           RTL8187_EEPROM_TXPWR_CHAN_6 + i,
1576                                           &txpwr);
1577                         (*channel++).hw_value = txpwr & 0xFF;
1578                         (*channel++).hw_value = txpwr >> 8;
1579                 }
1580         } else {
1581                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6,
1582                                   &txpwr);
1583                 (*channel++).hw_value = txpwr & 0xFF;
1584
1585                 eeprom_93cx6_read(&eeprom, 0x0A, &txpwr);
1586                 (*channel++).hw_value = txpwr & 0xFF;
1587
1588                 eeprom_93cx6_read(&eeprom, 0x1C, &txpwr);
1589                 (*channel++).hw_value = txpwr & 0xFF;
1590                 (*channel++).hw_value = txpwr >> 8;
1591         }
1592         /* Handle the differing rfkill GPIO bit in different models */
1593         priv->rfkill_mask = RFKILL_MASK_8187_89_97;
1594         if (product_id == 0x8197 || product_id == 0x8198) {
1595                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_SELECT_GPIO, &reg);
1596                 if (reg & 0xFF00)
1597                         priv->rfkill_mask = RFKILL_MASK_8198;
1598         }
1599         dev->vif_data_size = sizeof(struct rtl8187_vif);
1600         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1601                                       BIT(NL80211_IFTYPE_ADHOC) ;
1602
1603         if ((id->driver_info == DEVICE_RTL8187) && priv->is_rtl8187b)
1604                 printk(KERN_INFO "rtl8187: inconsistency between id with OEM"
1605                        " info!\n");
1606
1607         priv->rf = rtl8187_detect_rf(dev);
1608         dev->extra_tx_headroom = (!priv->is_rtl8187b) ?
1609                                   sizeof(struct rtl8187_tx_hdr) :
1610                                   sizeof(struct rtl8187b_tx_hdr);
1611         if (!priv->is_rtl8187b)
1612                 dev->queues = 1;
1613         else
1614                 dev->queues = 4;
1615
1616         err = ieee80211_register_hw(dev);
1617         if (err) {
1618                 printk(KERN_ERR "rtl8187: Cannot register device\n");
1619                 goto err_free_dmabuf;
1620         }
1621         mutex_init(&priv->conf_mutex);
1622         skb_queue_head_init(&priv->b_tx_status.queue);
1623
1624         wiphy_info(dev->wiphy, "hwaddr %pM, %s V%d + %s, rfkill mask %d\n",
1625                    mac_addr, chip_name, priv->asic_rev, priv->rf->name,
1626                    priv->rfkill_mask);
1627
1628 #ifdef CONFIG_RTL8187_LEDS
1629         eeprom_93cx6_read(&eeprom, 0x3F, &reg);
1630         reg &= 0xFF;
1631         rtl8187_leds_init(dev, reg);
1632 #endif
1633         rtl8187_rfkill_init(dev);
1634
1635         return 0;
1636
1637  err_free_dmabuf:
1638         kfree(priv->io_dmabuf);
1639  err_free_dev:
1640         ieee80211_free_hw(dev);
1641         usb_set_intfdata(intf, NULL);
1642         usb_put_dev(udev);
1643         return err;
1644 }
1645
1646 static void rtl8187_disconnect(struct usb_interface *intf)
1647 {
1648         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1649         struct rtl8187_priv *priv;
1650
1651         if (!dev)
1652                 return;
1653
1654 #ifdef CONFIG_RTL8187_LEDS
1655         rtl8187_leds_exit(dev);
1656 #endif
1657         rtl8187_rfkill_exit(dev);
1658         ieee80211_unregister_hw(dev);
1659
1660         priv = dev->priv;
1661         usb_reset_device(priv->udev);
1662         usb_put_dev(interface_to_usbdev(intf));
1663         kfree(priv->io_dmabuf);
1664         ieee80211_free_hw(dev);
1665 }
1666
1667 static struct usb_driver rtl8187_driver = {
1668         .name           = KBUILD_MODNAME,
1669         .id_table       = rtl8187_table,
1670         .probe          = rtl8187_probe,
1671         .disconnect     = rtl8187_disconnect,
1672         .disable_hub_initiated_lpm = 1,
1673 };
1674
1675 module_usb_driver(rtl8187_driver);