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/slab.h>
  26 #include <linux/delay.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/eeprom_93cx6.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 <andreamrl@tiscali.it>");
  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[] __devinitdata = {
  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, struct sk_buff *skb)
 231 {
 232         struct rtl8187_priv *priv = dev->priv;
 233         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 234         unsigned int ep;
 235         void *buf;
 236         struct urb *urb;
 237         __le16 rts_dur = 0;
 238         u32 flags;
 239         int rc;
 240
 241         urb = usb_alloc_urb(0, GFP_ATOMIC);
 242         if (!urb) {
 243                 kfree_skb(skb);
 244                 return;
 245         }
 246
 247         flags = skb->len;
 248         flags |= RTL818X_TX_DESC_FLAG_NO_ENC;
 249
 250         flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
 251         if (ieee80211_has_morefrags(((struct ieee80211_hdr *)skb->data)->frame_control))
 252                 flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
 253         if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 254                 flags |= RTL818X_TX_DESC_FLAG_RTS;
 255                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 256                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 257                                                  skb->len, info);
 258         } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 259                 flags |= RTL818X_TX_DESC_FLAG_CTS;
 260                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 261         }
 262
 263         if (!priv->is_rtl8187b) {
 264                 struct rtl8187_tx_hdr *hdr =
 265                         (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 266                 hdr->flags = cpu_to_le32(flags);
 267                 hdr->len = 0;
 268                 hdr->rts_duration = rts_dur;
 269                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
 270                 buf = hdr;
 271
 272                 ep = 2;
 273         } else {
 274                 /* fc needs to be calculated before skb_push() */
 275                 unsigned int epmap[4] = { 6, 7, 5, 4 };
 276                 struct ieee80211_hdr *tx_hdr =
 277                         (struct ieee80211_hdr *)(skb->data);
 278                 u16 fc = le16_to_cpu(tx_hdr->frame_control);
 279
 280                 struct rtl8187b_tx_hdr *hdr =
 281                         (struct rtl8187b_tx_hdr *)skb_push(skb, sizeof(*hdr));
 282                 struct ieee80211_rate *txrate =
 283                         ieee80211_get_tx_rate(dev, info);
 284                 memset(hdr, 0, sizeof(*hdr));
 285                 hdr->flags = cpu_to_le32(flags);
 286                 hdr->rts_duration = rts_dur;
 287                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
 288                 hdr->tx_duration =
 289                         ieee80211_generic_frame_duration(dev, priv->vif,
 290                                                          skb->len, txrate);
 291                 buf = hdr;
 292
 293                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
 294                         ep = 12;
 295                 else
 296                         ep = epmap[skb_get_queue_mapping(skb)];
 297         }
 298
 299         info->rate_driver_data[0] = dev;
 300         info->rate_driver_data[1] = urb;
 301
 302         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, ep),
 303                           buf, skb->len, rtl8187_tx_cb, skb);
 304         urb->transfer_flags |= URB_ZERO_PACKET;
 305         usb_anchor_urb(urb, &priv->anchored);
 306         rc = usb_submit_urb(urb, GFP_ATOMIC);
 307         if (rc < 0) {
 308                 usb_unanchor_urb(urb);
 309                 kfree_skb(skb);
 310         }
 311         usb_free_urb(urb);
 312 }
 313
 314 static void rtl8187_rx_cb(struct urb *urb)
 315 {
 316         struct sk_buff *skb = (struct sk_buff *)urb->context;
 317         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 318         struct ieee80211_hw *dev = info->dev;
 319         struct rtl8187_priv *priv = dev->priv;
 320         struct ieee80211_rx_status rx_status = { 0 };
 321         int rate, signal;
 322         u32 flags;
 323         unsigned long f;
 324
 325         spin_lock_irqsave(&priv->rx_queue.lock, f);
 326         __skb_unlink(skb, &priv->rx_queue);
 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. In this case, the scaling
 341                  * constants are derived from the output of p54usb.
 342                  */
 343                 signal = -4 - ((27 * hdr->agc) >> 6);
 344                 rx_status.antenna = (hdr->signal >> 7) & 1;
 345                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 346         } else {
 347                 struct rtl8187b_rx_hdr *hdr =
 348                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
 349                 /* The Realtek datasheet for the RTL8187B shows that the RX
 350                  * header contains the following quantities: signal quality,
 351                  * RSSI, AGC, the received power in dB, and the measured SNR.
 352                  * In testing, none of these quantities show qualitative
 353                  * agreement with AP signal strength, except for the AGC,
 354                  * which is inversely proportional to the strength of the
 355                  * signal. In the following, the signal strength
 356                  * is derived from the AGC. The arbitrary scaling constants
 357                  * are chosen to make the results close to the values obtained
 358                  * for a BCM4312 using b43 as the driver. The noise is ignored
 359                  * for now.
 360                  */
 361                 flags = le32_to_cpu(hdr->flags);
 362                 signal = 14 - hdr->agc / 2;
 363                 rx_status.antenna = (hdr->rssi >> 7) & 1;
 364                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 365         }
 366
 367         rx_status.signal = signal;
 368         priv->signal = signal;
 369         rate = (flags >> 20) & 0xF;
 370         skb_trim(skb, flags & 0x0FFF);
 371         rx_status.rate_idx = rate;
 372         rx_status.freq = dev->conf.channel->center_freq;
 373         rx_status.band = dev->conf.channel->band;
 374         rx_status.flag |= RX_FLAG_MACTIME_MPDU;
 375         if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
 376                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 377         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
 378         ieee80211_rx_irqsafe(dev, skb);
 379
 380         skb = dev_alloc_skb(RTL8187_MAX_RX);
 381         if (unlikely(!skb)) {
 382                 /* TODO check rx queue length and refill *somewhere* */
 383                 return;
 384         }
 385
 386         info = (struct rtl8187_rx_info *)skb->cb;
 387         info->urb = urb;
 388         info->dev = dev;
 389         urb->transfer_buffer = skb_tail_pointer(skb);
 390         urb->context = skb;
 391         skb_queue_tail(&priv->rx_queue, skb);
 392
 393         usb_anchor_urb(urb, &priv->anchored);
 394         if (usb_submit_urb(urb, GFP_ATOMIC)) {
 395                 usb_unanchor_urb(urb);
 396                 skb_unlink(skb, &priv->rx_queue);
 397                 dev_kfree_skb_irq(skb);
 398         }
 399 }
 400
 401 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 402 {
 403         struct rtl8187_priv *priv = dev->priv;
 404         struct urb *entry = NULL;
 405         struct sk_buff *skb;
 406         struct rtl8187_rx_info *info;
 407         int ret = 0;
 408
 409         while (skb_queue_len(&priv->rx_queue) < 16) {
 410                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 411                 if (!skb) {
 412                         ret = -ENOMEM;
 413                         goto err;
 414                 }
 415                 entry = usb_alloc_urb(0, GFP_KERNEL);
 416                 if (!entry) {
 417                         ret = -ENOMEM;
 418                         goto err;
 419                 }
 420                 usb_fill_bulk_urb(entry, priv->udev,
 421                                   usb_rcvbulkpipe(priv->udev,
 422                                   priv->is_rtl8187b ? 3 : 1),
 423                                   skb_tail_pointer(skb),
 424                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 425                 info = (struct rtl8187_rx_info *)skb->cb;
 426                 info->urb = entry;
 427                 info->dev = dev;
 428                 skb_queue_tail(&priv->rx_queue, skb);
 429                 usb_anchor_urb(entry, &priv->anchored);
 430                 ret = usb_submit_urb(entry, GFP_KERNEL);
 431                 if (ret) {
 432                         skb_unlink(skb, &priv->rx_queue);
 433                         usb_unanchor_urb(entry);
 434                         goto err;
 435                 }
 436                 usb_free_urb(entry);
 437         }
 438         return ret;
 439
 440 err:
 441         usb_free_urb(entry);
 442         kfree_skb(skb);
 443         usb_kill_anchored_urbs(&priv->anchored);
 444         return ret;
 445 }
 446
 447 static void rtl8187b_status_cb(struct urb *urb)
 448 {
 449         struct ieee80211_hw *hw = (struct ieee80211_hw *)urb->context;
 450         struct rtl8187_priv *priv = hw->priv;
 451         u64 val;
 452         unsigned int cmd_type;
 453
 454         if (unlikely(urb->status))
 455                 return;
 456
 457         /*
 458          * Read from status buffer:
 459          *
 460          * bits [30:31] = cmd type:
 461          * - 0 indicates tx beacon interrupt
 462          * - 1 indicates tx close descriptor
 463          *
 464          * In the case of tx beacon interrupt:
 465          * [0:9] = Last Beacon CW
 466          * [10:29] = reserved
 467          * [30:31] = 00b
 468          * [32:63] = Last Beacon TSF
 469          *
 470          * If it's tx close descriptor:
 471          * [0:7] = Packet Retry Count
 472          * [8:14] = RTS Retry Count
 473          * [15] = TOK
 474          * [16:27] = Sequence No
 475          * [28] = LS
 476          * [29] = FS
 477          * [30:31] = 01b
 478          * [32:47] = unused (reserved?)
 479          * [48:63] = MAC Used Time
 480          */
 481         val = le64_to_cpu(priv->b_tx_status.buf);
 482
 483         cmd_type = (val >> 30) & 0x3;
 484         if (cmd_type == 1) {
 485                 unsigned int pkt_rc, seq_no;
 486                 bool tok;
 487                 struct sk_buff *skb;
 488                 struct ieee80211_hdr *ieee80211hdr;
 489                 unsigned long flags;
 490
 491                 pkt_rc = val & 0xFF;
 492                 tok = val & (1 << 15);
 493                 seq_no = (val >> 16) & 0xFFF;
 494
 495                 spin_lock_irqsave(&priv->b_tx_status.queue.lock, flags);
 496                 skb_queue_reverse_walk(&priv->b_tx_status.queue, skb) {
 497                         ieee80211hdr = (struct ieee80211_hdr *)skb->data;
 498
 499                         /*
 500                          * While testing, it was discovered that the seq_no
 501                          * doesn't actually contains the sequence number.
 502                          * Instead of returning just the 12 bits of sequence
 503                          * number, hardware is returning entire sequence control
 504                          * (fragment number plus sequence number) in a 12 bit
 505                          * only field overflowing after some time. As a
 506                          * workaround, just consider the lower bits, and expect
 507                          * it's unlikely we wrongly ack some sent data
 508                          */
 509                         if ((le16_to_cpu(ieee80211hdr->seq_ctrl)
 510                             & 0xFFF) == seq_no)
 511                                 break;
 512                 }
 513                 if (skb != (struct sk_buff *) &priv->b_tx_status.queue) {
 514                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 515
 516                         __skb_unlink(skb, &priv->b_tx_status.queue);
 517                         if (tok)
 518                                 info->flags |= IEEE80211_TX_STAT_ACK;
 519                         info->status.rates[0].count = pkt_rc + 1;
 520
 521                         ieee80211_tx_status_irqsafe(hw, skb);
 522                 }
 523                 spin_unlock_irqrestore(&priv->b_tx_status.queue.lock, flags);
 524         }
 525
 526         usb_anchor_urb(urb, &priv->anchored);
 527         if (usb_submit_urb(urb, GFP_ATOMIC))
 528                 usb_unanchor_urb(urb);
 529 }
 530
 531 static int rtl8187b_init_status_urb(struct ieee80211_hw *dev)
 532 {
 533         struct rtl8187_priv *priv = dev->priv;
 534         struct urb *entry;
 535         int ret = 0;
 536
 537         entry = usb_alloc_urb(0, GFP_KERNEL);
 538         if (!entry)
 539                 return -ENOMEM;
 540
 541         usb_fill_bulk_urb(entry, priv->udev, usb_rcvbulkpipe(priv->udev, 9),
 542                           &priv->b_tx_status.buf, sizeof(priv->b_tx_status.buf),
 543                           rtl8187b_status_cb, dev);
 544
 545         usb_anchor_urb(entry, &priv->anchored);
 546         ret = usb_submit_urb(entry, GFP_KERNEL);
 547         if (ret)
 548                 usb_unanchor_urb(entry);
 549         usb_free_urb(entry);
 550
 551         return ret;
 552 }
 553
 554 static void rtl8187_set_anaparam(struct rtl8187_priv *priv, bool rfon)
 555 {
 556         u32 anaparam, anaparam2;
 557         u8 anaparam3, reg;
 558
 559         if (!priv->is_rtl8187b) {
 560                 if (rfon) {
 561                         anaparam = RTL8187_RTL8225_ANAPARAM_ON;
 562                         anaparam2 = RTL8187_RTL8225_ANAPARAM2_ON;
 563                 } else {
 564                         anaparam = RTL8187_RTL8225_ANAPARAM_OFF;
 565                         anaparam2 = RTL8187_RTL8225_ANAPARAM2_OFF;
 566                 }
 567         } else {
 568                 if (rfon) {
 569                         anaparam = RTL8187B_RTL8225_ANAPARAM_ON;
 570                         anaparam2 = RTL8187B_RTL8225_ANAPARAM2_ON;
 571                         anaparam3 = RTL8187B_RTL8225_ANAPARAM3_ON;
 572                 } else {
 573                         anaparam = RTL8187B_RTL8225_ANAPARAM_OFF;
 574                         anaparam2 = RTL8187B_RTL8225_ANAPARAM2_OFF;
 575                         anaparam3 = RTL8187B_RTL8225_ANAPARAM3_OFF;
 576                 }
 577         }
 578
 579         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 580                          RTL818X_EEPROM_CMD_CONFIG);
 581         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 582         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE;
 583         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 584         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
 585         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, anaparam2);
 586         if (priv->is_rtl8187b)
 587                 rtl818x_iowrite8(priv, &priv->map->ANAPARAM3, anaparam3);
 588         reg &= ~RTL818X_CONFIG3_ANAPARAM_WRITE;
 589         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 590         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 591                          RTL818X_EEPROM_CMD_NORMAL);
 592 }
 593
 594 static int rtl8187_cmd_reset(struct ieee80211_hw *dev)
 595 {
 596         struct rtl8187_priv *priv = dev->priv;
 597         u8 reg;
 598         int i;
 599
 600         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 601         reg &= (1 << 1);
 602         reg |= RTL818X_CMD_RESET;
 603         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 604
 605         i = 10;
 606         do {
 607                 msleep(2);
 608                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 609                       RTL818X_CMD_RESET))
 610                         break;
 611         } while (--i);
 612
 613         if (!i) {
 614                 wiphy_err(dev->wiphy, "Reset timeout!\n");
 615                 return -ETIMEDOUT;
 616         }
 617
 618         /* reload registers from eeprom */
 619         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 620
 621         i = 10;
 622         do {
 623                 msleep(4);
 624                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 625                       RTL818X_EEPROM_CMD_CONFIG))
 626                         break;
 627         } while (--i);
 628
 629         if (!i) {
 630                 wiphy_err(dev->wiphy, "eeprom reset timeout!\n");
 631                 return -ETIMEDOUT;
 632         }
 633
 634         return 0;
 635 }
 636
 637 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 638 {
 639         struct rtl8187_priv *priv = dev->priv;
 640         u8 reg;
 641         int res;
 642
 643         /* reset */
 644         rtl8187_set_anaparam(priv, true);
 645
 646         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 647
 648         msleep(200);
 649         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 650         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 651         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 652         msleep(200);
 653
 654         res = rtl8187_cmd_reset(dev);
 655         if (res)
 656                 return res;
 657
 658         rtl8187_set_anaparam(priv, true);
 659
 660         /* setup card */
 661         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 662         rtl818x_iowrite8(priv, &priv->map->GPIO0, 0);
 663
 664         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 665         rtl818x_iowrite8(priv, &priv->map->GPIO0, 1);
 666         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 667
 668         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 669
 670         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 671         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 672         reg &= 0x3F;
 673         reg |= 0x80;
 674         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 675
 676         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 677
 678         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 679         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 680         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0);
 681
 682         // TODO: set RESP_RATE and BRSR properly
 683         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 684         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 685
 686         /* host_usb_init */
 687         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 688         rtl818x_iowrite8(priv, &priv->map->GPIO0, 0);
 689         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 690         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 691         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 692         rtl818x_iowrite8(priv, &priv->map->GPIO0, 0x20);
 693         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 694         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 695         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 696         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 697         msleep(100);
 698
 699         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 700         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 701         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 702         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 703                          RTL818X_EEPROM_CMD_CONFIG);
 704         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 705         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 706                          RTL818X_EEPROM_CMD_NORMAL);
 707         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 708         msleep(100);
 709
 710         priv->rf->init(dev);
 711
 712         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 713         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 714         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 715         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 716         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 717         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 718         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 719
 720         return 0;
 721 }
 722
 723 static const u8 rtl8187b_reg_table[][3] = {
 724         {0xF0, 0x32, 0}, {0xF1, 0x32, 0}, {0xF2, 0x00, 0}, {0xF3, 0x00, 0},
 725         {0xF4, 0x32, 0}, {0xF5, 0x43, 0}, {0xF6, 0x00, 0}, {0xF7, 0x00, 0},
 726         {0xF8, 0x46, 0}, {0xF9, 0xA4, 0}, {0xFA, 0x00, 0}, {0xFB, 0x00, 0},
 727         {0xFC, 0x96, 0}, {0xFD, 0xA4, 0}, {0xFE, 0x00, 0}, {0xFF, 0x00, 0},
 728
 729         {0x58, 0x4B, 1}, {0x59, 0x00, 1}, {0x5A, 0x4B, 1}, {0x5B, 0x00, 1},
 730         {0x60, 0x4B, 1}, {0x61, 0x09, 1}, {0x62, 0x4B, 1}, {0x63, 0x09, 1},
 731         {0xCE, 0x0F, 1}, {0xCF, 0x00, 1}, {0xF0, 0x4E, 1}, {0xF1, 0x01, 1},
 732         {0xF2, 0x02, 1}, {0xF3, 0x03, 1}, {0xF4, 0x04, 1}, {0xF5, 0x05, 1},
 733         {0xF6, 0x06, 1}, {0xF7, 0x07, 1}, {0xF8, 0x08, 1},
 734
 735         {0x4E, 0x00, 2}, {0x0C, 0x04, 2}, {0x21, 0x61, 2}, {0x22, 0x68, 2},
 736         {0x23, 0x6F, 2}, {0x24, 0x76, 2}, {0x25, 0x7D, 2}, {0x26, 0x84, 2},
 737         {0x27, 0x8D, 2}, {0x4D, 0x08, 2}, {0x50, 0x05, 2}, {0x51, 0xF5, 2},
 738         {0x52, 0x04, 2}, {0x53, 0xA0, 2}, {0x54, 0x1F, 2}, {0x55, 0x23, 2},
 739         {0x56, 0x45, 2}, {0x57, 0x67, 2}, {0x58, 0x08, 2}, {0x59, 0x08, 2},
 740         {0x5A, 0x08, 2}, {0x5B, 0x08, 2}, {0x60, 0x08, 2}, {0x61, 0x08, 2},
 741         {0x62, 0x08, 2}, {0x63, 0x08, 2}, {0x64, 0xCF, 2},
 742
 743         {0x5B, 0x40, 0}, {0x84, 0x88, 0}, {0x85, 0x24, 0}, {0x88, 0x54, 0},
 744         {0x8B, 0xB8, 0}, {0x8C, 0x07, 0}, {0x8D, 0x00, 0}, {0x94, 0x1B, 0},
 745         {0x95, 0x12, 0}, {0x96, 0x00, 0}, {0x97, 0x06, 0}, {0x9D, 0x1A, 0},
 746         {0x9F, 0x10, 0}, {0xB4, 0x22, 0}, {0xBE, 0x80, 0}, {0xDB, 0x00, 0},
 747         {0xEE, 0x00, 0}, {0x4C, 0x00, 2},
 748
 749         {0x9F, 0x00, 3}, {0x8C, 0x01, 0}, {0x8D, 0x10, 0}, {0x8E, 0x08, 0},
 750         {0x8F, 0x00, 0}
 751 };
 752
 753 static int rtl8187b_init_hw(struct ieee80211_hw *dev)
 754 {
 755         struct rtl8187_priv *priv = dev->priv;
 756         int res, i;
 757         u8 reg;
 758
 759         rtl8187_set_anaparam(priv, true);
 760
 761         /* Reset PLL sequence on 8187B. Realtek note: reduces power
 762          * consumption about 30 mA */
 763         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0x10);
 764         reg = rtl818x_ioread8(priv, (u8 *)0xFF62);
 765         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg & ~(1 << 5));
 766         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg | (1 << 5));
 767
 768         res = rtl8187_cmd_reset(dev);
 769         if (res)
 770                 return res;
 771
 772         rtl8187_set_anaparam(priv, true);
 773
 774         /* BRSR (Basic Rate Set Register) on 8187B looks to be the same as
 775          * RESP_RATE on 8187L in Realtek sources: each bit should be each
 776          * one of the 12 rates, all are enabled */
 777         rtl818x_iowrite16(priv, (__le16 *)0xFF34, 0x0FFF);
 778
 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
 783         /* Auto Rate Fallback Register (ARFR): 1M-54M setting */
 784         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFE0, 0x0FFF, 1);
 785         rtl818x_iowrite8_idx(priv, (u8 *)0xFFE2, 0x00, 1);
 786
 787         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFD4, 0xFFFF, 1);
 788
 789         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 790                          RTL818X_EEPROM_CMD_CONFIG);
 791         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 792         rtl818x_iowrite8(priv, &priv->map->CONFIG1, (reg & 0x3F) | 0x80);
 793         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 794                          RTL818X_EEPROM_CMD_NORMAL);
 795
 796         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 797         for (i = 0; i < ARRAY_SIZE(rtl8187b_reg_table); i++) {
 798                 rtl818x_iowrite8_idx(priv,
 799                                      (u8 *)(uintptr_t)
 800                                      (rtl8187b_reg_table[i][0] | 0xFF00),
 801                                      rtl8187b_reg_table[i][1],
 802                                      rtl8187b_reg_table[i][2]);
 803         }
 804
 805         rtl818x_iowrite16(priv, &priv->map->TID_AC_MAP, 0xFA50);
 806         rtl818x_iowrite16(priv, &priv->map->INT_MIG, 0);
 807
 808         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF0, 0, 1);
 809         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF4, 0, 1);
 810         rtl818x_iowrite8_idx(priv, (u8 *)0xFFF8, 0, 1);
 811
 812         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x00004001);
 813
 814         /* RFSW_CTRL register */
 815         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x569A, 2);
 816
 817         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x0480);
 818         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x2488);
 819         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FFF);
 820         msleep(100);
 821
 822         priv->rf->init(dev);
 823
 824         reg = RTL818X_CMD_TX_ENABLE | RTL818X_CMD_RX_ENABLE;
 825         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 826         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 827
 828         rtl818x_iowrite8(priv, (u8 *)0xFE41, 0xF4);
 829         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x00);
 830         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 831         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 832         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x0F);
 833         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 834         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 835
 836         reg = rtl818x_ioread8(priv, (u8 *)0xFFDB);
 837         rtl818x_iowrite8(priv, (u8 *)0xFFDB, reg | (1 << 2));
 838         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x59FA, 3);
 839         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF74, 0x59D2, 3);
 840         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF76, 0x59D2, 3);
 841         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF78, 0x19FA, 3);
 842         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7A, 0x19FA, 3);
 843         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7C, 0x00D0, 3);
 844         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0);
 845         rtl818x_iowrite8_idx(priv, (u8 *)0xFF80, 0x0F, 1);
 846         rtl818x_iowrite8_idx(priv, (u8 *)0xFF83, 0x03, 1);
 847         rtl818x_iowrite8(priv, (u8 *)0xFFDA, 0x10);
 848         rtl818x_iowrite8_idx(priv, (u8 *)0xFF4D, 0x08, 2);
 849
 850         rtl818x_iowrite32(priv, &priv->map->HSSI_PARA, 0x0600321B);
 851
 852         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFEC, 0x0800, 1);
 853
 854         priv->slot_time = 0x9;
 855         priv->aifsn[0] = 2; /* AIFSN[AC_VO] */
 856         priv->aifsn[1] = 2; /* AIFSN[AC_VI] */
 857         priv->aifsn[2] = 7; /* AIFSN[AC_BK] */
 858         priv->aifsn[3] = 3; /* AIFSN[AC_BE] */
 859         rtl818x_iowrite8(priv, &priv->map->ACM_CONTROL, 0);
 860
 861         /* ENEDCA flag must always be set, transmit issues? */
 862         rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_ENEDCA);
 863
 864         return 0;
 865 }
 866
 867 static void rtl8187_work(struct work_struct *work)
 868 {
 869         /* The RTL8187 returns the retry count through register 0xFFFA. In
 870          * addition, it appears to be a cumulative retry count, not the
 871          * value for the current TX packet. When multiple TX entries are
 872          * queued, the retry count will be valid for the last one in the queue.
 873          * The "error" should not matter for purposes of rate setting. */
 874         struct rtl8187_priv *priv = container_of(work, struct rtl8187_priv,
 875                                     work.work);
 876         struct ieee80211_tx_info *info;
 877         struct ieee80211_hw *dev = priv->dev;
 878         static u16 retry;
 879         u16 tmp;
 880
 881         mutex_lock(&priv->conf_mutex);
 882         tmp = rtl818x_ioread16(priv, (__le16 *)0xFFFA);
 883         while (skb_queue_len(&priv->b_tx_status.queue) > 0) {
 884                 struct sk_buff *old_skb;
 885
 886                 old_skb = skb_dequeue(&priv->b_tx_status.queue);
 887                 info = IEEE80211_SKB_CB(old_skb);
 888                 info->status.rates[0].count = tmp - retry + 1;
 889                 ieee80211_tx_status_irqsafe(dev, old_skb);
 890         }
 891         retry = tmp;
 892         mutex_unlock(&priv->conf_mutex);
 893 }
 894
 895 static int rtl8187_start(struct ieee80211_hw *dev)
 896 {
 897         struct rtl8187_priv *priv = dev->priv;
 898         u32 reg;
 899         int ret;
 900
 901         mutex_lock(&priv->conf_mutex);
 902
 903         ret = (!priv->is_rtl8187b) ? rtl8187_init_hw(dev) :
 904                                      rtl8187b_init_hw(dev);
 905         if (ret)
 906                 goto rtl8187_start_exit;
 907
 908         init_usb_anchor(&priv->anchored);
 909         priv->dev = dev;
 910
 911         if (priv->is_rtl8187b) {
 912                 reg = RTL818X_RX_CONF_MGMT |
 913                       RTL818X_RX_CONF_DATA |
 914                       RTL818X_RX_CONF_BROADCAST |
 915                       RTL818X_RX_CONF_NICMAC |
 916                       RTL818X_RX_CONF_BSSID |
 917                       (7 << 13 /* RX FIFO threshold NONE */) |
 918                       (7 << 10 /* MAX RX DMA */) |
 919                       RTL818X_RX_CONF_RX_AUTORESETPHY |
 920                       RTL818X_RX_CONF_ONLYERLPKT |
 921                       RTL818X_RX_CONF_MULTICAST;
 922                 priv->rx_conf = reg;
 923                 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 924
 925                 reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 926                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 927                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 928                 reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 929                 rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 930
 931                 rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 932                                   RTL818X_TX_CONF_HW_SEQNUM |
 933                                   RTL818X_TX_CONF_DISREQQSIZE |
 934                                   (7 << 8  /* short retry limit */) |
 935                                   (7 << 0  /* long retry limit */) |
 936                                   (7 << 21 /* MAX TX DMA */));
 937                 rtl8187_init_urbs(dev);
 938                 rtl8187b_init_status_urb(dev);
 939                 goto rtl8187_start_exit;
 940         }
 941
 942         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 943
 944         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 945         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 946
 947         rtl8187_init_urbs(dev);
 948
 949         reg = RTL818X_RX_CONF_ONLYERLPKT |
 950               RTL818X_RX_CONF_RX_AUTORESETPHY |
 951               RTL818X_RX_CONF_BSSID |
 952               RTL818X_RX_CONF_MGMT |
 953               RTL818X_RX_CONF_DATA |
 954               (7 << 13 /* RX FIFO threshold NONE */) |
 955               (7 << 10 /* MAX RX DMA */) |
 956               RTL818X_RX_CONF_BROADCAST |
 957               RTL818X_RX_CONF_NICMAC;
 958
 959         priv->rx_conf = reg;
 960         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 961
 962         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 963         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 964         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 965         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 966
 967         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 968         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 969         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 970         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 971         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 972
 973         reg  = RTL818X_TX_CONF_CW_MIN |
 974                (7 << 21 /* MAX TX DMA */) |
 975                RTL818X_TX_CONF_NO_ICV;
 976         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 977
 978         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 979         reg |= RTL818X_CMD_TX_ENABLE;
 980         reg |= RTL818X_CMD_RX_ENABLE;
 981         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 982         INIT_DELAYED_WORK(&priv->work, rtl8187_work);
 983
 984 rtl8187_start_exit:
 985         mutex_unlock(&priv->conf_mutex);
 986         return ret;
 987 }
 988
 989 static void rtl8187_stop(struct ieee80211_hw *dev)
 990 {
 991         struct rtl8187_priv *priv = dev->priv;
 992         struct sk_buff *skb;
 993         u32 reg;
 994
 995         mutex_lock(&priv->conf_mutex);
 996         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 997
 998         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 999         reg &= ~RTL818X_CMD_TX_ENABLE;
1000         reg &= ~RTL818X_CMD_RX_ENABLE;
1001         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
1002
1003         priv->rf->stop(dev);
1004         rtl8187_set_anaparam(priv, false);
1005
1006         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1007         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
1008         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
1009         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1010
1011         while ((skb = skb_dequeue(&priv->b_tx_status.queue)))
1012                 dev_kfree_skb_any(skb);
1013
1014         usb_kill_anchored_urbs(&priv->anchored);
1015         mutex_unlock(&priv->conf_mutex);
1016
1017         if (!priv->is_rtl8187b)
1018                 cancel_delayed_work_sync(&priv->work);
1019 }
1020
1021 static int rtl8187_add_interface(struct ieee80211_hw *dev,
1022                                  struct ieee80211_vif *vif)
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->vif)
1030                 goto exit;
1031
1032         switch (vif->type) {
1033         case NL80211_IFTYPE_STATION:
1034                 break;
1035         default:
1036                 goto exit;
1037         }
1038
1039         ret = 0;
1040         priv->vif = vif;
1041
1042         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1043         for (i = 0; i < ETH_ALEN; i++)
1044                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
1045                                  ((u8 *)vif->addr)[i]);
1046         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1047
1048 exit:
1049         mutex_unlock(&priv->conf_mutex);
1050         return ret;
1051 }
1052
1053 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
1054                                      struct ieee80211_vif *vif)
1055 {
1056         struct rtl8187_priv *priv = dev->priv;
1057         mutex_lock(&priv->conf_mutex);
1058         priv->vif = NULL;
1059         mutex_unlock(&priv->conf_mutex);
1060 }
1061
1062 static int rtl8187_config(struct ieee80211_hw *dev, u32 changed)
1063 {
1064         struct rtl8187_priv *priv = dev->priv;
1065         struct ieee80211_conf *conf = &dev->conf;
1066         u32 reg;
1067
1068         mutex_lock(&priv->conf_mutex);
1069         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1070         /* Enable TX loopback on MAC level to avoid TX during channel
1071          * changes, as this has be seen to causes problems and the
1072          * card will stop work until next reset
1073          */
1074         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
1075                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
1076         priv->rf->set_chan(dev, conf);
1077         msleep(10);
1078         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
1079
1080         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
1081         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
1082         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
1083         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
1084         mutex_unlock(&priv->conf_mutex);
1085         return 0;
1086 }
1087
1088 /*
1089  * With 8187B, AC_*_PARAM clashes with FEMR definition in struct rtl818x_csr for
1090  * example. Thus we have to use raw values for AC_*_PARAM register addresses.
1091  */
1092 static __le32 *rtl8187b_ac_addr[4] = {
1093         (__le32 *) 0xFFF0, /* AC_VO */
1094         (__le32 *) 0xFFF4, /* AC_VI */
1095         (__le32 *) 0xFFFC, /* AC_BK */
1096         (__le32 *) 0xFFF8, /* AC_BE */
1097 };
1098
1099 #define SIFS_TIME 0xa
1100
1101 static void rtl8187_conf_erp(struct rtl8187_priv *priv, bool use_short_slot,
1102                              bool use_short_preamble)
1103 {
1104         if (priv->is_rtl8187b) {
1105                 u8 difs, eifs;
1106                 u16 ack_timeout;
1107                 int queue;
1108
1109                 if (use_short_slot) {
1110                         priv->slot_time = 0x9;
1111                         difs = 0x1c;
1112                         eifs = 0x53;
1113                 } else {
1114                         priv->slot_time = 0x14;
1115                         difs = 0x32;
1116                         eifs = 0x5b;
1117                 }
1118                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1119                 rtl818x_iowrite8(priv, &priv->map->SLOT, priv->slot_time);
1120                 rtl818x_iowrite8(priv, &priv->map->DIFS, difs);
1121
1122                 /*
1123                  * BRSR+1 on 8187B is in fact EIFS register
1124                  * Value in units of 4 us
1125                  */
1126                 rtl818x_iowrite8(priv, (u8 *)&priv->map->BRSR + 1, eifs);
1127
1128                 /*
1129                  * For 8187B, CARRIER_SENSE_COUNTER is in fact ack timeout
1130                  * register. In units of 4 us like eifs register
1131                  * ack_timeout = ack duration + plcp + difs + preamble
1132                  */
1133                 ack_timeout = 112 + 48 + difs;
1134                 if (use_short_preamble)
1135                         ack_timeout += 72;
1136                 else
1137                         ack_timeout += 144;
1138                 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER,
1139                                  DIV_ROUND_UP(ack_timeout, 4));
1140
1141                 for (queue = 0; queue < 4; queue++)
1142                         rtl818x_iowrite8(priv, (u8 *) rtl8187b_ac_addr[queue],
1143                                          priv->aifsn[queue] * priv->slot_time +
1144                                          SIFS_TIME);
1145         } else {
1146                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1147                 if (use_short_slot) {
1148                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
1149                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
1150                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
1151                 } else {
1152                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
1153                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
1154                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
1155                 }
1156         }
1157 }
1158
1159 static void rtl8187_bss_info_changed(struct ieee80211_hw *dev,
1160                                      struct ieee80211_vif *vif,
1161                                      struct ieee80211_bss_conf *info,
1162                                      u32 changed)
1163 {
1164         struct rtl8187_priv *priv = dev->priv;
1165         int i;
1166         u8 reg;
1167
1168         if (changed & BSS_CHANGED_BSSID) {
1169                 mutex_lock(&priv->conf_mutex);
1170                 for (i = 0; i < ETH_ALEN; i++)
1171                         rtl818x_iowrite8(priv, &priv->map->BSSID[i],
1172                                          info->bssid[i]);
1173
1174                 if (priv->is_rtl8187b)
1175                         reg = RTL818X_MSR_ENEDCA;
1176                 else
1177                         reg = 0;
1178
1179                 if (is_valid_ether_addr(info->bssid))
1180                         reg |= RTL818X_MSR_INFRA;
1181                 else
1182                         reg |= RTL818X_MSR_NO_LINK;
1183
1184                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1185
1186                 mutex_unlock(&priv->conf_mutex);
1187         }
1188
1189         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE))
1190                 rtl8187_conf_erp(priv, info->use_short_slot,
1191                                  info->use_short_preamble);
1192 }
1193
1194 static u64 rtl8187_prepare_multicast(struct ieee80211_hw *dev,
1195                                      struct netdev_hw_addr_list *mc_list)
1196 {
1197         return netdev_hw_addr_list_count(mc_list);
1198 }
1199
1200 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
1201                                      unsigned int changed_flags,
1202                                      unsigned int *total_flags,
1203                                      u64 multicast)
1204 {
1205         struct rtl8187_priv *priv = dev->priv;
1206
1207         if (changed_flags & FIF_FCSFAIL)
1208                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
1209         if (changed_flags & FIF_CONTROL)
1210                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
1211         if (changed_flags & FIF_OTHER_BSS)
1212                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
1213         if (*total_flags & FIF_ALLMULTI || multicast > 0)
1214                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
1215         else
1216                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
1217
1218         *total_flags = 0;
1219
1220         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
1221                 *total_flags |= FIF_FCSFAIL;
1222         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
1223                 *total_flags |= FIF_CONTROL;
1224         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
1225                 *total_flags |= FIF_OTHER_BSS;
1226         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
1227                 *total_flags |= FIF_ALLMULTI;
1228
1229         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
1230 }
1231
1232 static int rtl8187_conf_tx(struct ieee80211_hw *dev, u16 queue,
1233                            const struct ieee80211_tx_queue_params *params)
1234 {
1235         struct rtl8187_priv *priv = dev->priv;
1236         u8 cw_min, cw_max;
1237
1238         if (queue > 3)
1239                 return -EINVAL;
1240
1241         cw_min = fls(params->cw_min);
1242         cw_max = fls(params->cw_max);
1243
1244         if (priv->is_rtl8187b) {
1245                 priv->aifsn[queue] = params->aifs;
1246
1247                 /*
1248                  * This is the structure of AC_*_PARAM registers in 8187B:
1249                  * - TXOP limit field, bit offset = 16
1250                  * - ECWmax, bit offset = 12
1251                  * - ECWmin, bit offset = 8
1252                  * - AIFS, bit offset = 0
1253                  */
1254                 rtl818x_iowrite32(priv, rtl8187b_ac_addr[queue],
1255                                   (params->txop << 16) | (cw_max << 12) |
1256                                   (cw_min << 8) | (params->aifs *
1257                                   priv->slot_time + SIFS_TIME));
1258         } else {
1259                 if (queue != 0)
1260                         return -EINVAL;
1261
1262                 rtl818x_iowrite8(priv, &priv->map->CW_VAL,
1263                                  cw_min | (cw_max << 4));
1264         }
1265         return 0;
1266 }
1267
1268 static u64 rtl8187_get_tsf(struct ieee80211_hw *dev)
1269 {
1270         struct rtl8187_priv *priv = dev->priv;
1271
1272         return rtl818x_ioread32(priv, &priv->map->TSFT[0]) |
1273                (u64)(rtl818x_ioread32(priv, &priv->map->TSFT[1])) << 32;
1274 }
1275
1276 static const struct ieee80211_ops rtl8187_ops = {
1277         .tx                     = rtl8187_tx,
1278         .start                  = rtl8187_start,
1279         .stop                   = rtl8187_stop,
1280         .add_interface          = rtl8187_add_interface,
1281         .remove_interface       = rtl8187_remove_interface,
1282         .config                 = rtl8187_config,
1283         .bss_info_changed       = rtl8187_bss_info_changed,
1284         .prepare_multicast      = rtl8187_prepare_multicast,
1285         .configure_filter       = rtl8187_configure_filter,
1286         .conf_tx                = rtl8187_conf_tx,
1287         .rfkill_poll            = rtl8187_rfkill_poll,
1288         .get_tsf                = rtl8187_get_tsf,
1289 };
1290
1291 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
1292 {
1293         struct ieee80211_hw *dev = eeprom->data;
1294         struct rtl8187_priv *priv = dev->priv;
1295         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1296
1297         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
1298         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
1299         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
1300         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
1301 }
1302
1303 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
1304 {
1305         struct ieee80211_hw *dev = eeprom->data;
1306         struct rtl8187_priv *priv = dev->priv;
1307         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
1308
1309         if (eeprom->reg_data_in)
1310                 reg |= RTL818X_EEPROM_CMD_WRITE;
1311         if (eeprom->reg_data_out)
1312                 reg |= RTL818X_EEPROM_CMD_READ;
1313         if (eeprom->reg_data_clock)
1314                 reg |= RTL818X_EEPROM_CMD_CK;
1315         if (eeprom->reg_chip_select)
1316                 reg |= RTL818X_EEPROM_CMD_CS;
1317
1318         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
1319         udelay(10);
1320 }
1321
1322 static int __devinit rtl8187_probe(struct usb_interface *intf,
1323                                    const struct usb_device_id *id)
1324 {
1325         struct usb_device *udev = interface_to_usbdev(intf);
1326         struct ieee80211_hw *dev;
1327         struct rtl8187_priv *priv;
1328         struct eeprom_93cx6 eeprom;
1329         struct ieee80211_channel *channel;
1330         const char *chip_name;
1331         u16 txpwr, reg;
1332         u16 product_id = le16_to_cpu(udev->descriptor.idProduct);
1333         int err, i;
1334         u8 mac_addr[ETH_ALEN];
1335
1336         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
1337         if (!dev) {
1338                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
1339                 return -ENOMEM;
1340         }
1341
1342         priv = dev->priv;
1343         priv->is_rtl8187b = (id->driver_info == DEVICE_RTL8187B);
1344
1345         /* allocate "DMA aware" buffer for register accesses */
1346         priv->io_dmabuf = kmalloc(sizeof(*priv->io_dmabuf), GFP_KERNEL);
1347         if (!priv->io_dmabuf) {
1348                 err = -ENOMEM;
1349                 goto err_free_dev;
1350         }
1351         mutex_init(&priv->io_mutex);
1352
1353         SET_IEEE80211_DEV(dev, &intf->dev);
1354         usb_set_intfdata(intf, dev);
1355         priv->udev = udev;
1356
1357         usb_get_dev(udev);
1358
1359         skb_queue_head_init(&priv->rx_queue);
1360
1361         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
1362         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
1363
1364         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
1365         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
1366         priv->map = (struct rtl818x_csr *)0xFF00;
1367
1368         priv->band.band = IEEE80211_BAND_2GHZ;
1369         priv->band.channels = priv->channels;
1370         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
1371         priv->band.bitrates = priv->rates;
1372         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
1373         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
1374
1375
1376         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1377                      IEEE80211_HW_SIGNAL_DBM |
1378                      IEEE80211_HW_RX_INCLUDES_FCS;
1379
1380         eeprom.data = dev;
1381         eeprom.register_read = rtl8187_eeprom_register_read;
1382         eeprom.register_write = rtl8187_eeprom_register_write;
1383         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
1384                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
1385         else
1386                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
1387
1388         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1389         udelay(10);
1390
1391         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
1392                                (__le16 __force *)mac_addr, 3);
1393         if (!is_valid_ether_addr(mac_addr)) {
1394                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
1395                        "generated MAC address\n");
1396                 random_ether_addr(mac_addr);
1397         }
1398         SET_IEEE80211_PERM_ADDR(dev, mac_addr);
1399
1400         channel = priv->channels;
1401         for (i = 0; i < 3; i++) {
1402                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
1403                                   &txpwr);
1404                 (*channel++).hw_value = txpwr & 0xFF;
1405                 (*channel++).hw_value = txpwr >> 8;
1406         }
1407         for (i = 0; i < 2; i++) {
1408                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
1409                                   &txpwr);
1410                 (*channel++).hw_value = txpwr & 0xFF;
1411                 (*channel++).hw_value = txpwr >> 8;
1412         }
1413
1414         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
1415                           &priv->txpwr_base);
1416
1417         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
1418         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
1419         /* 0 means asic B-cut, we should use SW 3 wire
1420          * bit-by-bit banging for radio. 1 means we can use
1421          * USB specific request to write radio registers */
1422         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
1423         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
1424         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1425
1426         if (!priv->is_rtl8187b) {
1427                 u32 reg32;
1428                 reg32 = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1429                 reg32 &= RTL818X_TX_CONF_HWVER_MASK;
1430                 switch (reg32) {
1431                 case RTL818X_TX_CONF_R8187vD_B:
1432                         /* Some RTL8187B devices have a USB ID of 0x8187
1433                          * detect them here */
1434                         chip_name = "RTL8187BvB(early)";
1435                         priv->is_rtl8187b = 1;
1436                         priv->hw_rev = RTL8187BvB;
1437                         break;
1438                 case RTL818X_TX_CONF_R8187vD:
1439                         chip_name = "RTL8187vD";
1440                         break;
1441                 default:
1442                         chip_name = "RTL8187vB (default)";
1443                 }
1444        } else {
1445                 /*
1446                  * Force USB request to write radio registers for 8187B, Realtek
1447                  * only uses it in their sources
1448                  */
1449                 /*if (priv->asic_rev == 0) {
1450                         printk(KERN_WARNING "rtl8187: Forcing use of USB "
1451                                "requests to write to radio registers\n");
1452                         priv->asic_rev = 1;
1453                 }*/
1454                 switch (rtl818x_ioread8(priv, (u8 *)0xFFE1)) {
1455                 case RTL818X_R8187B_B:
1456                         chip_name = "RTL8187BvB";
1457                         priv->hw_rev = RTL8187BvB;
1458                         break;
1459                 case RTL818X_R8187B_D:
1460                         chip_name = "RTL8187BvD";
1461                         priv->hw_rev = RTL8187BvD;
1462                         break;
1463                 case RTL818X_R8187B_E:
1464                         chip_name = "RTL8187BvE";
1465                         priv->hw_rev = RTL8187BvE;
1466                         break;
1467                 default:
1468                         chip_name = "RTL8187BvB (default)";
1469                         priv->hw_rev = RTL8187BvB;
1470                 }
1471         }
1472
1473         if (!priv->is_rtl8187b) {
1474                 for (i = 0; i < 2; i++) {
1475                         eeprom_93cx6_read(&eeprom,
1476                                           RTL8187_EEPROM_TXPWR_CHAN_6 + i,
1477                                           &txpwr);
1478                         (*channel++).hw_value = txpwr & 0xFF;
1479                         (*channel++).hw_value = txpwr >> 8;
1480                 }
1481         } else {
1482                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6,
1483                                   &txpwr);
1484                 (*channel++).hw_value = txpwr & 0xFF;
1485
1486                 eeprom_93cx6_read(&eeprom, 0x0A, &txpwr);
1487                 (*channel++).hw_value = txpwr & 0xFF;
1488
1489                 eeprom_93cx6_read(&eeprom, 0x1C, &txpwr);
1490                 (*channel++).hw_value = txpwr & 0xFF;
1491                 (*channel++).hw_value = txpwr >> 8;
1492         }
1493         /* Handle the differing rfkill GPIO bit in different models */
1494         priv->rfkill_mask = RFKILL_MASK_8187_89_97;
1495         if (product_id == 0x8197 || product_id == 0x8198) {
1496                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_SELECT_GPIO, &reg);
1497                 if (reg & 0xFF00)
1498                         priv->rfkill_mask = RFKILL_MASK_8198;
1499         }
1500
1501         /*
1502          * XXX: Once this driver supports anything that requires
1503          *      beacons it must implement IEEE80211_TX_CTL_ASSIGN_SEQ.
1504          */
1505         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1506
1507         if ((id->driver_info == DEVICE_RTL8187) && priv->is_rtl8187b)
1508                 printk(KERN_INFO "rtl8187: inconsistency between id with OEM"
1509                        " info!\n");
1510
1511         priv->rf = rtl8187_detect_rf(dev);
1512         dev->extra_tx_headroom = (!priv->is_rtl8187b) ?
1513                                   sizeof(struct rtl8187_tx_hdr) :
1514                                   sizeof(struct rtl8187b_tx_hdr);
1515         if (!priv->is_rtl8187b)
1516                 dev->queues = 1;
1517         else
1518                 dev->queues = 4;
1519
1520         err = ieee80211_register_hw(dev);
1521         if (err) {
1522                 printk(KERN_ERR "rtl8187: Cannot register device\n");
1523                 goto err_free_dmabuf;
1524         }
1525         mutex_init(&priv->conf_mutex);
1526         skb_queue_head_init(&priv->b_tx_status.queue);
1527
1528         wiphy_info(dev->wiphy, "hwaddr %pM, %s V%d + %s, rfkill mask %d\n",
1529                    mac_addr, chip_name, priv->asic_rev, priv->rf->name,
1530                    priv->rfkill_mask);
1531
1532 #ifdef CONFIG_RTL8187_LEDS
1533         eeprom_93cx6_read(&eeprom, 0x3F, &reg);
1534         reg &= 0xFF;
1535         rtl8187_leds_init(dev, reg);
1536 #endif
1537         rtl8187_rfkill_init(dev);
1538
1539         return 0;
1540
1541  err_free_dmabuf:
1542         kfree(priv->io_dmabuf);
1543  err_free_dev:
1544         ieee80211_free_hw(dev);
1545         usb_set_intfdata(intf, NULL);
1546         usb_put_dev(udev);
1547         return err;
1548 }
1549
1550 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
1551 {
1552         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1553         struct rtl8187_priv *priv;
1554
1555         if (!dev)
1556                 return;
1557
1558 #ifdef CONFIG_RTL8187_LEDS
1559         rtl8187_leds_exit(dev);
1560 #endif
1561         rtl8187_rfkill_exit(dev);
1562         ieee80211_unregister_hw(dev);
1563
1564         priv = dev->priv;
1565         usb_reset_device(priv->udev);
1566         usb_put_dev(interface_to_usbdev(intf));
1567         kfree(priv->io_dmabuf);
1568         ieee80211_free_hw(dev);
1569 }
1570
1571 static struct usb_driver rtl8187_driver = {
1572         .name           = KBUILD_MODNAME,
1573         .id_table       = rtl8187_table,
1574         .probe          = rtl8187_probe,
1575         .disconnect     = __devexit_p(rtl8187_disconnect),
1576 };
1577
1578 static int __init rtl8187_init(void)
1579 {
1580         return usb_register(&rtl8187_driver);
1581 }
1582
1583 static void __exit rtl8187_exit(void)
1584 {
1585         usb_deregister(&rtl8187_driver);
1586 }
1587
1588 module_init(rtl8187_init);
1589 module_exit(rtl8187_exit);