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 <linux/module.h>
  30 #include <net/mac80211.h>
  31
  32 #include "rtl8187.h"
  33 #include "rtl8225.h"
  34 #ifdef CONFIG_RTL8187_LEDS
  35 #include "leds.h"
  36 #endif
  37 #include "rfkill.h"
  38
  39 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  40 MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>");
  41 MODULE_AUTHOR("Herton Ronaldo Krzesinski <herton@mandriva.com.br>");
  42 MODULE_AUTHOR("Hin-Tak Leung <htl10@users.sourceforge.net>");
  43 MODULE_AUTHOR("Larry Finger <Larry.Finger@lwfinger.net>");
  44 MODULE_DESCRIPTION("RTL8187/RTL8187B USB wireless driver");
  45 MODULE_LICENSE("GPL");
  46
  47 static struct usb_device_id rtl8187_table[] = {
  48         /* Asus */
  49         {USB_DEVICE(0x0b05, 0x171d), .driver_info = DEVICE_RTL8187},
  50         /* Belkin */
  51         {USB_DEVICE(0x050d, 0x705e), .driver_info = DEVICE_RTL8187B},
  52         /* Realtek */
  53         {USB_DEVICE(0x0bda, 0x8187), .driver_info = DEVICE_RTL8187},
  54         {USB_DEVICE(0x0bda, 0x8189), .driver_info = DEVICE_RTL8187B},
  55         {USB_DEVICE(0x0bda, 0x8197), .driver_info = DEVICE_RTL8187B},
  56         {USB_DEVICE(0x0bda, 0x8198), .driver_info = DEVICE_RTL8187B},
  57         /* Surecom */
  58         {USB_DEVICE(0x0769, 0x11F2), .driver_info = DEVICE_RTL8187},
  59         /* Logitech */
  60         {USB_DEVICE(0x0789, 0x010C), .driver_info = DEVICE_RTL8187},
  61         /* Netgear */
  62         {USB_DEVICE(0x0846, 0x6100), .driver_info = DEVICE_RTL8187},
  63         {USB_DEVICE(0x0846, 0x6a00), .driver_info = DEVICE_RTL8187},
  64         {USB_DEVICE(0x0846, 0x4260), .driver_info = DEVICE_RTL8187B},
  65         /* HP */
  66         {USB_DEVICE(0x03f0, 0xca02), .driver_info = DEVICE_RTL8187},
  67         /* Sitecom */
  68         {USB_DEVICE(0x0df6, 0x000d), .driver_info = DEVICE_RTL8187},
  69         {USB_DEVICE(0x0df6, 0x0028), .driver_info = DEVICE_RTL8187B},
  70         {USB_DEVICE(0x0df6, 0x0029), .driver_info = DEVICE_RTL8187B},
  71         /* Sphairon Access Systems GmbH */
  72         {USB_DEVICE(0x114B, 0x0150), .driver_info = DEVICE_RTL8187},
  73         /* Dick Smith Electronics */
  74         {USB_DEVICE(0x1371, 0x9401), .driver_info = DEVICE_RTL8187},
  75         /* Abocom */
  76         {USB_DEVICE(0x13d1, 0xabe6), .driver_info = DEVICE_RTL8187},
  77         /* Qcom */
  78         {USB_DEVICE(0x18E8, 0x6232), .driver_info = DEVICE_RTL8187},
  79         /* AirLive */
  80         {USB_DEVICE(0x1b75, 0x8187), .driver_info = DEVICE_RTL8187},
  81         /* Linksys */
  82         {USB_DEVICE(0x1737, 0x0073), .driver_info = DEVICE_RTL8187B},
  83         {}
  84 };
  85
  86 MODULE_DEVICE_TABLE(usb, rtl8187_table);
  87
  88 static const struct ieee80211_rate rtl818x_rates[] = {
  89         { .bitrate = 10, .hw_value = 0, },
  90         { .bitrate = 20, .hw_value = 1, },
  91         { .bitrate = 55, .hw_value = 2, },
  92         { .bitrate = 110, .hw_value = 3, },
  93         { .bitrate = 60, .hw_value = 4, },
  94         { .bitrate = 90, .hw_value = 5, },
  95         { .bitrate = 120, .hw_value = 6, },
  96         { .bitrate = 180, .hw_value = 7, },
  97         { .bitrate = 240, .hw_value = 8, },
  98         { .bitrate = 360, .hw_value = 9, },
  99         { .bitrate = 480, .hw_value = 10, },
 100         { .bitrate = 540, .hw_value = 11, },
 101 };
 102
 103 static const struct ieee80211_channel rtl818x_channels[] = {
 104         { .center_freq = 2412 },
 105         { .center_freq = 2417 },
 106         { .center_freq = 2422 },
 107         { .center_freq = 2427 },
 108         { .center_freq = 2432 },
 109         { .center_freq = 2437 },
 110         { .center_freq = 2442 },
 111         { .center_freq = 2447 },
 112         { .center_freq = 2452 },
 113         { .center_freq = 2457 },
 114         { .center_freq = 2462 },
 115         { .center_freq = 2467 },
 116         { .center_freq = 2472 },
 117         { .center_freq = 2484 },
 118 };
 119
 120 static void rtl8187_iowrite_async_cb(struct urb *urb)
 121 {
 122         kfree(urb->context);
 123 }
 124
 125 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
 126                                   void *data, u16 len)
 127 {
 128         struct usb_ctrlrequest *dr;
 129         struct urb *urb;
 130         struct rtl8187_async_write_data {
 131                 u8 data[4];
 132                 struct usb_ctrlrequest dr;
 133         } *buf;
 134         int rc;
 135
 136         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
 137         if (!buf)
 138                 return;
 139
 140         urb = usb_alloc_urb(0, GFP_ATOMIC);
 141         if (!urb) {
 142                 kfree(buf);
 143                 return;
 144         }
 145
 146         dr = &buf->dr;
 147
 148         dr->bRequestType = RTL8187_REQT_WRITE;
 149         dr->bRequest = RTL8187_REQ_SET_REG;
 150         dr->wValue = addr;
 151         dr->wIndex = 0;
 152         dr->wLength = cpu_to_le16(len);
 153
 154         memcpy(buf, data, len);
 155
 156         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
 157                              (unsigned char *)dr, buf, len,
 158                              rtl8187_iowrite_async_cb, buf);
 159         usb_anchor_urb(urb, &priv->anchored);
 160         rc = usb_submit_urb(urb, GFP_ATOMIC);
 161         if (rc < 0) {
 162                 kfree(buf);
 163                 usb_unanchor_urb(urb);
 164         }
 165         usb_free_urb(urb);
 166 }
 167
 168 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
 169                                            __le32 *addr, u32 val)
 170 {
 171         __le32 buf = cpu_to_le32(val);
 172
 173         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
 174                               &buf, sizeof(buf));
 175 }
 176
 177 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
 178 {
 179         struct rtl8187_priv *priv = dev->priv;
 180
 181         data <<= 8;
 182         data |= addr | 0x80;
 183
 184         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
 185         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
 186         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
 187         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
 188 }
 189
 190 static void rtl8187_tx_cb(struct urb *urb)
 191 {
 192         struct sk_buff *skb = (struct sk_buff *)urb->context;
 193         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 194         struct ieee80211_hw *hw = info->rate_driver_data[0];
 195         struct rtl8187_priv *priv = hw->priv;
 196
 197         skb_pull(skb, priv->is_rtl8187b ? sizeof(struct rtl8187b_tx_hdr) :
 198                                           sizeof(struct rtl8187_tx_hdr));
 199         ieee80211_tx_info_clear_status(info);
 200
 201         if (!(urb->status) && !(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 202                 if (priv->is_rtl8187b) {
 203                         skb_queue_tail(&priv->b_tx_status.queue, skb);
 204
 205                         /* queue is "full", discard last items */
 206                         while (skb_queue_len(&priv->b_tx_status.queue) > 5) {
 207                                 struct sk_buff *old_skb;
 208
 209                                 dev_dbg(&priv->udev->dev,
 210                                         "transmit status queue full\n");
 211
 212                                 old_skb = skb_dequeue(&priv->b_tx_status.queue);
 213                                 ieee80211_tx_status_irqsafe(hw, old_skb);
 214                         }
 215                         return;
 216                 } else {
 217                         info->flags |= IEEE80211_TX_STAT_ACK;
 218                 }
 219         }
 220         if (priv->is_rtl8187b)
 221                 ieee80211_tx_status_irqsafe(hw, skb);
 222         else {
 223                 /* Retry information for the RTI8187 is only available by
 224                  * reading a register in the device. We are in interrupt mode
 225                  * here, thus queue the skb and finish on a work queue. */
 226                 skb_queue_tail(&priv->b_tx_status.queue, skb);
 227                 ieee80211_queue_delayed_work(hw, &priv->work, 0);
 228         }
 229 }
 230
 231 static void rtl8187_tx(struct ieee80211_hw *dev,
 232                        struct ieee80211_tx_control *control,
 233                        struct sk_buff *skb)
 234 {
 235         struct rtl8187_priv *priv = dev->priv;
 236         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 237         struct ieee80211_hdr *tx_hdr =  (struct ieee80211_hdr *)(skb->data);
 238         unsigned int ep;
 239         void *buf;
 240         struct urb *urb;
 241         __le16 rts_dur = 0;
 242         u32 flags;
 243         int rc;
 244
 245         urb = usb_alloc_urb(0, GFP_ATOMIC);
 246         if (!urb) {
 247                 kfree_skb(skb);
 248                 return;
 249         }
 250
 251         flags = skb->len;
 252         flags |= RTL818X_TX_DESC_FLAG_NO_ENC;
 253
 254         flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
 255         if (ieee80211_has_morefrags(tx_hdr->frame_control))
 256                 flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
 257         if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 258                 flags |= RTL818X_TX_DESC_FLAG_RTS;
 259                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 260                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 261                                                  skb->len, info);
 262         } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 263                 flags |= RTL818X_TX_DESC_FLAG_CTS;
 264                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 265         }
 266
 267         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
 268                 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
 269                         priv->seqno += 0x10;
 270                 tx_hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
 271                 tx_hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
 272         }
 273
 274         if (!priv->is_rtl8187b) {
 275                 struct rtl8187_tx_hdr *hdr =
 276                         (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 277                 hdr->flags = cpu_to_le32(flags);
 278                 hdr->len = 0;
 279                 hdr->rts_duration = rts_dur;
 280                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
 281                 buf = hdr;
 282
 283                 ep = 2;
 284         } else {
 285                 /* fc needs to be calculated before skb_push() */
 286                 unsigned int epmap[4] = { 6, 7, 5, 4 };
 287                 u16 fc = le16_to_cpu(tx_hdr->frame_control);
 288
 289                 struct rtl8187b_tx_hdr *hdr =
 290                         (struct rtl8187b_tx_hdr *)skb_push(skb, sizeof(*hdr));
 291                 struct ieee80211_rate *txrate =
 292                         ieee80211_get_tx_rate(dev, info);
 293                 memset(hdr, 0, sizeof(*hdr));
 294                 hdr->flags = cpu_to_le32(flags);
 295                 hdr->rts_duration = rts_dur;
 296                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
 297                 hdr->tx_duration =
 298                         ieee80211_generic_frame_duration(dev, priv->vif,
 299                                                          info->band,
 300                                                          skb->len, txrate);
 301                 buf = hdr;
 302
 303                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
 304                         ep = 12;
 305                 else
 306                         ep = epmap[skb_get_queue_mapping(skb)];
 307         }
 308
 309         info->rate_driver_data[0] = dev;
 310         info->rate_driver_data[1] = urb;
 311
 312         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, ep),
 313                           buf, skb->len, rtl8187_tx_cb, skb);
 314         urb->transfer_flags |= URB_ZERO_PACKET;
 315         usb_anchor_urb(urb, &priv->anchored);
 316         rc = usb_submit_urb(urb, GFP_ATOMIC);
 317         if (rc < 0) {
 318                 usb_unanchor_urb(urb);
 319                 kfree_skb(skb);
 320         }
 321         usb_free_urb(urb);
 322 }
 323
 324 static void rtl8187_rx_cb(struct urb *urb)
 325 {
 326         struct sk_buff *skb = (struct sk_buff *)urb->context;
 327         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 328         struct ieee80211_hw *dev = info->dev;
 329         struct rtl8187_priv *priv = dev->priv;
 330         struct ieee80211_rx_status rx_status = { 0 };
 331         int rate, signal;
 332         u32 flags;
 333         unsigned long f;
 334
 335         spin_lock_irqsave(&priv->rx_queue.lock, f);
 336         __skb_unlink(skb, &priv->rx_queue);
 337         spin_unlock_irqrestore(&priv->rx_queue.lock, f);
 338         skb_put(skb, urb->actual_length);
 339
 340         if (unlikely(urb->status)) {
 341                 dev_kfree_skb_irq(skb);
 342                 return;
 343         }
 344
 345         if (!priv->is_rtl8187b) {
 346                 struct rtl8187_rx_hdr *hdr =
 347                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
 348                 flags = le32_to_cpu(hdr->flags);
 349                 /* As with the RTL8187B below, the AGC is used to calculate
 350                  * signal strength. In this case, the scaling
 351                  * constants are derived from the output of p54usb.
 352                  */
 353                 signal = -4 - ((27 * hdr->agc) >> 6);
 354                 rx_status.antenna = (hdr->signal >> 7) & 1;
 355                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 356         } else {
 357                 struct rtl8187b_rx_hdr *hdr =
 358                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
 359                 /* The Realtek datasheet for the RTL8187B shows that the RX
 360                  * header contains the following quantities: signal quality,
 361                  * RSSI, AGC, the received power in dB, and the measured SNR.
 362                  * In testing, none of these quantities show qualitative
 363                  * agreement with AP signal strength, except for the AGC,
 364                  * which is inversely proportional to the strength of the
 365                  * signal. In the following, the signal strength
 366                  * is derived from the AGC. The arbitrary scaling constants
 367                  * are chosen to make the results close to the values obtained
 368                  * for a BCM4312 using b43 as the driver. The noise is ignored
 369                  * for now.
 370                  */
 371                 flags = le32_to_cpu(hdr->flags);
 372                 signal = 14 - hdr->agc / 2;
 373                 rx_status.antenna = (hdr->rssi >> 7) & 1;
 374                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 375         }
 376
 377         rx_status.signal = signal;
 378         priv->signal = signal;
 379         rate = (flags >> 20) & 0xF;
 380         skb_trim(skb, flags & 0x0FFF);
 381         rx_status.rate_idx = rate;
 382         rx_status.freq = dev->conf.chandef.chan->center_freq;
 383         rx_status.band = dev->conf.chandef.chan->band;
 384         rx_status.flag |= RX_FLAG_MACTIME_START;
 385         if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
 386                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 387         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
 388         ieee80211_rx_irqsafe(dev, skb);
 389
 390         skb = dev_alloc_skb(RTL8187_MAX_RX);
 391         if (unlikely(!skb)) {
 392                 /* TODO check rx queue length and refill *somewhere* */
 393                 return;
 394         }
 395
 396         info = (struct rtl8187_rx_info *)skb->cb;
 397         info->urb = urb;
 398         info->dev = dev;
 399         urb->transfer_buffer = skb_tail_pointer(skb);
 400         urb->context = skb;
 401         skb_queue_tail(&priv->rx_queue, skb);
 402
 403         usb_anchor_urb(urb, &priv->anchored);
 404         if (usb_submit_urb(urb, GFP_ATOMIC)) {
 405                 usb_unanchor_urb(urb);
 406                 skb_unlink(skb, &priv->rx_queue);
 407                 dev_kfree_skb_irq(skb);
 408         }
 409 }
 410
 411 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 412 {
 413         struct rtl8187_priv *priv = dev->priv;
 414         struct urb *entry = NULL;
 415         struct sk_buff *skb;
 416         struct rtl8187_rx_info *info;
 417         int ret = 0;
 418
 419         while (skb_queue_len(&priv->rx_queue) < 16) {
 420                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 421                 if (!skb) {
 422                         ret = -ENOMEM;
 423                         goto err;
 424                 }
 425                 entry = usb_alloc_urb(0, GFP_KERNEL);
 426                 if (!entry) {
 427                         ret = -ENOMEM;
 428                         goto err;
 429                 }
 430                 usb_fill_bulk_urb(entry, priv->udev,
 431                                   usb_rcvbulkpipe(priv->udev,
 432                                   priv->is_rtl8187b ? 3 : 1),
 433                                   skb_tail_pointer(skb),
 434                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 435                 info = (struct rtl8187_rx_info *)skb->cb;
 436                 info->urb = entry;
 437                 info->dev = dev;
 438                 skb_queue_tail(&priv->rx_queue, skb);
 439                 usb_anchor_urb(entry, &priv->anchored);
 440                 ret = usb_submit_urb(entry, GFP_KERNEL);
 441                 if (ret) {
 442                         skb_unlink(skb, &priv->rx_queue);
 443                         usb_unanchor_urb(entry);
 444                         goto err;
 445                 }
 446                 usb_free_urb(entry);
 447         }
 448         return ret;
 449
 450 err:
 451         usb_free_urb(entry);
 452         kfree_skb(skb);
 453         usb_kill_anchored_urbs(&priv->anchored);
 454         return ret;
 455 }
 456
 457 static void rtl8187b_status_cb(struct urb *urb)
 458 {
 459         struct ieee80211_hw *hw = (struct ieee80211_hw *)urb->context;
 460         struct rtl8187_priv *priv = hw->priv;
 461         u64 val;
 462         unsigned int cmd_type;
 463
 464         if (unlikely(urb->status))
 465                 return;
 466
 467         /*
 468          * Read from status buffer:
 469          *
 470          * bits [30:31] = cmd type:
 471          * - 0 indicates tx beacon interrupt
 472          * - 1 indicates tx close descriptor
 473          *
 474          * In the case of tx beacon interrupt:
 475          * [0:9] = Last Beacon CW
 476          * [10:29] = reserved
 477          * [30:31] = 00b
 478          * [32:63] = Last Beacon TSF
 479          *
 480          * If it's tx close descriptor:
 481          * [0:7] = Packet Retry Count
 482          * [8:14] = RTS Retry Count
 483          * [15] = TOK
 484          * [16:27] = Sequence No
 485          * [28] = LS
 486          * [29] = FS
 487          * [30:31] = 01b
 488          * [32:47] = unused (reserved?)
 489          * [48:63] = MAC Used Time
 490          */
 491         val = le64_to_cpu(priv->b_tx_status.buf);
 492
 493         cmd_type = (val >> 30) & 0x3;
 494         if (cmd_type == 1) {
 495                 unsigned int pkt_rc, seq_no;
 496                 bool tok;
 497                 struct sk_buff *skb;
 498                 struct ieee80211_hdr *ieee80211hdr;
 499                 unsigned long flags;
 500
 501                 pkt_rc = val & 0xFF;
 502                 tok = val & (1 << 15);
 503                 seq_no = (val >> 16) & 0xFFF;
 504
 505                 spin_lock_irqsave(&priv->b_tx_status.queue.lock, flags);
 506                 skb_queue_reverse_walk(&priv->b_tx_status.queue, skb) {
 507                         ieee80211hdr = (struct ieee80211_hdr *)skb->data;
 508
 509                         /*
 510                          * While testing, it was discovered that the seq_no
 511                          * doesn't actually contains the sequence number.
 512                          * Instead of returning just the 12 bits of sequence
 513                          * number, hardware is returning entire sequence control
 514                          * (fragment number plus sequence number) in a 12 bit
 515                          * only field overflowing after some time. As a
 516                          * workaround, just consider the lower bits, and expect
 517                          * it's unlikely we wrongly ack some sent data
 518                          */
 519                         if ((le16_to_cpu(ieee80211hdr->seq_ctrl)
 520                             & 0xFFF) == seq_no)
 521                                 break;
 522                 }
 523                 if (skb != (struct sk_buff *) &priv->b_tx_status.queue) {
 524                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 525
 526                         __skb_unlink(skb, &priv->b_tx_status.queue);
 527                         if (tok)
 528                                 info->flags |= IEEE80211_TX_STAT_ACK;
 529                         info->status.rates[0].count = pkt_rc + 1;
 530
 531                         ieee80211_tx_status_irqsafe(hw, skb);
 532                 }
 533                 spin_unlock_irqrestore(&priv->b_tx_status.queue.lock, flags);
 534         }
 535
 536         usb_anchor_urb(urb, &priv->anchored);
 537         if (usb_submit_urb(urb, GFP_ATOMIC))
 538                 usb_unanchor_urb(urb);
 539 }
 540
 541 static int rtl8187b_init_status_urb(struct ieee80211_hw *dev)
 542 {
 543         struct rtl8187_priv *priv = dev->priv;
 544         struct urb *entry;
 545         int ret = 0;
 546
 547         entry = usb_alloc_urb(0, GFP_KERNEL);
 548         if (!entry)
 549                 return -ENOMEM;
 550
 551         usb_fill_bulk_urb(entry, priv->udev, usb_rcvbulkpipe(priv->udev, 9),
 552                           &priv->b_tx_status.buf, sizeof(priv->b_tx_status.buf),
 553                           rtl8187b_status_cb, dev);
 554
 555         usb_anchor_urb(entry, &priv->anchored);
 556         ret = usb_submit_urb(entry, GFP_KERNEL);
 557         if (ret)
 558                 usb_unanchor_urb(entry);
 559         usb_free_urb(entry);
 560
 561         return ret;
 562 }
 563
 564 static void rtl8187_set_anaparam(struct rtl8187_priv *priv, bool rfon)
 565 {
 566         u32 anaparam, anaparam2;
 567         u8 anaparam3, reg;
 568
 569         if (!priv->is_rtl8187b) {
 570                 if (rfon) {
 571                         anaparam = RTL8187_RTL8225_ANAPARAM_ON;
 572                         anaparam2 = RTL8187_RTL8225_ANAPARAM2_ON;
 573                 } else {
 574                         anaparam = RTL8187_RTL8225_ANAPARAM_OFF;
 575                         anaparam2 = RTL8187_RTL8225_ANAPARAM2_OFF;
 576                 }
 577         } else {
 578                 if (rfon) {
 579                         anaparam = RTL8187B_RTL8225_ANAPARAM_ON;
 580                         anaparam2 = RTL8187B_RTL8225_ANAPARAM2_ON;
 581                         anaparam3 = RTL8187B_RTL8225_ANAPARAM3_ON;
 582                 } else {
 583                         anaparam = RTL8187B_RTL8225_ANAPARAM_OFF;
 584                         anaparam2 = RTL8187B_RTL8225_ANAPARAM2_OFF;
 585                         anaparam3 = RTL8187B_RTL8225_ANAPARAM3_OFF;
 586                 }
 587         }
 588
 589         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 590                          RTL818X_EEPROM_CMD_CONFIG);
 591         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 592         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE;
 593         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 594         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
 595         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, anaparam2);
 596         if (priv->is_rtl8187b)
 597                 rtl818x_iowrite8(priv, &priv->map->ANAPARAM3, anaparam3);
 598         reg &= ~RTL818X_CONFIG3_ANAPARAM_WRITE;
 599         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 600         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 601                          RTL818X_EEPROM_CMD_NORMAL);
 602 }
 603
 604 static int rtl8187_cmd_reset(struct ieee80211_hw *dev)
 605 {
 606         struct rtl8187_priv *priv = dev->priv;
 607         u8 reg;
 608         int i;
 609
 610         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 611         reg &= (1 << 1);
 612         reg |= RTL818X_CMD_RESET;
 613         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 614
 615         i = 10;
 616         do {
 617                 msleep(2);
 618                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 619                       RTL818X_CMD_RESET))
 620                         break;
 621         } while (--i);
 622
 623         if (!i) {
 624                 wiphy_err(dev->wiphy, "Reset timeout!\n");
 625                 return -ETIMEDOUT;
 626         }
 627
 628         /* reload registers from eeprom */
 629         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 630
 631         i = 10;
 632         do {
 633                 msleep(4);
 634                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 635                       RTL818X_EEPROM_CMD_CONFIG))
 636                         break;
 637         } while (--i);
 638
 639         if (!i) {
 640                 wiphy_err(dev->wiphy, "eeprom reset timeout!\n");
 641                 return -ETIMEDOUT;
 642         }
 643
 644         return 0;
 645 }
 646
 647 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 648 {
 649         struct rtl8187_priv *priv = dev->priv;
 650         u8 reg;
 651         int res;
 652
 653         /* reset */
 654         rtl8187_set_anaparam(priv, true);
 655
 656         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 657
 658         msleep(200);
 659         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 660         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 661         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 662         msleep(200);
 663
 664         res = rtl8187_cmd_reset(dev);
 665         if (res)
 666                 return res;
 667
 668         rtl8187_set_anaparam(priv, true);
 669
 670         /* setup card */
 671         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 672         rtl818x_iowrite8(priv, &priv->map->GPIO0, 0);
 673
 674         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 675         rtl818x_iowrite8(priv, &priv->map->GPIO0, 1);
 676         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 677
 678         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 679
 680         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 681         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 682         reg &= 0x3F;
 683         reg |= 0x80;
 684         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 685
 686         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 687
 688         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 689         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 690         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0);
 691
 692         // TODO: set RESP_RATE and BRSR properly
 693         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 694         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 695
 696         /* host_usb_init */
 697         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 698         rtl818x_iowrite8(priv, &priv->map->GPIO0, 0);
 699         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 700         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 701         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 702         rtl818x_iowrite8(priv, &priv->map->GPIO0, 0x20);
 703         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 704         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 705         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 706         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 707         msleep(100);
 708
 709         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 710         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 711         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 712         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 713                          RTL818X_EEPROM_CMD_CONFIG);
 714         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 715         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 716                          RTL818X_EEPROM_CMD_NORMAL);
 717         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 718         msleep(100);
 719
 720         priv->rf->init(dev);
 721
 722         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 723         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 724         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 725         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 726         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 727         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 728         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 729
 730         return 0;
 731 }
 732
 733 static const u8 rtl8187b_reg_table[][3] = {
 734         {0xF0, 0x32, 0}, {0xF1, 0x32, 0}, {0xF2, 0x00, 0}, {0xF3, 0x00, 0},
 735         {0xF4, 0x32, 0}, {0xF5, 0x43, 0}, {0xF6, 0x00, 0}, {0xF7, 0x00, 0},
 736         {0xF8, 0x46, 0}, {0xF9, 0xA4, 0}, {0xFA, 0x00, 0}, {0xFB, 0x00, 0},
 737         {0xFC, 0x96, 0}, {0xFD, 0xA4, 0}, {0xFE, 0x00, 0}, {0xFF, 0x00, 0},
 738
 739         {0x58, 0x4B, 1}, {0x59, 0x00, 1}, {0x5A, 0x4B, 1}, {0x5B, 0x00, 1},
 740         {0x60, 0x4B, 1}, {0x61, 0x09, 1}, {0x62, 0x4B, 1}, {0x63, 0x09, 1},
 741         {0xCE, 0x0F, 1}, {0xCF, 0x00, 1}, {0xF0, 0x4E, 1}, {0xF1, 0x01, 1},
 742         {0xF2, 0x02, 1}, {0xF3, 0x03, 1}, {0xF4, 0x04, 1}, {0xF5, 0x05, 1},
 743         {0xF6, 0x06, 1}, {0xF7, 0x07, 1}, {0xF8, 0x08, 1},
 744
 745         {0x4E, 0x00, 2}, {0x0C, 0x04, 2}, {0x21, 0x61, 2}, {0x22, 0x68, 2},
 746         {0x23, 0x6F, 2}, {0x24, 0x76, 2}, {0x25, 0x7D, 2}, {0x26, 0x84, 2},
 747         {0x27, 0x8D, 2}, {0x4D, 0x08, 2}, {0x50, 0x05, 2}, {0x51, 0xF5, 2},
 748         {0x52, 0x04, 2}, {0x53, 0xA0, 2}, {0x54, 0x1F, 2}, {0x55, 0x23, 2},
 749         {0x56, 0x45, 2}, {0x57, 0x67, 2}, {0x58, 0x08, 2}, {0x59, 0x08, 2},
 750         {0x5A, 0x08, 2}, {0x5B, 0x08, 2}, {0x60, 0x08, 2}, {0x61, 0x08, 2},
 751         {0x62, 0x08, 2}, {0x63, 0x08, 2}, {0x64, 0xCF, 2},
 752
 753         {0x5B, 0x40, 0}, {0x84, 0x88, 0}, {0x85, 0x24, 0}, {0x88, 0x54, 0},
 754         {0x8B, 0xB8, 0}, {0x8C, 0x07, 0}, {0x8D, 0x00, 0}, {0x94, 0x1B, 0},
 755         {0x95, 0x12, 0}, {0x96, 0x00, 0}, {0x97, 0x06, 0}, {0x9D, 0x1A, 0},
 756         {0x9F, 0x10, 0}, {0xB4, 0x22, 0}, {0xBE, 0x80, 0}, {0xDB, 0x00, 0},
 757         {0xEE, 0x00, 0}, {0x4C, 0x00, 2},
 758
 759         {0x9F, 0x00, 3}, {0x8C, 0x01, 0}, {0x8D, 0x10, 0}, {0x8E, 0x08, 0},
 760         {0x8F, 0x00, 0}
 761 };
 762
 763 static int rtl8187b_init_hw(struct ieee80211_hw *dev)
 764 {
 765         struct rtl8187_priv *priv = dev->priv;
 766         int res, i;
 767         u8 reg;
 768
 769         rtl8187_set_anaparam(priv, true);
 770
 771         /* Reset PLL sequence on 8187B. Realtek note: reduces power
 772          * consumption about 30 mA */
 773         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0x10);
 774         reg = rtl818x_ioread8(priv, (u8 *)0xFF62);
 775         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg & ~(1 << 5));
 776         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg | (1 << 5));
 777
 778         res = rtl8187_cmd_reset(dev);
 779         if (res)
 780                 return res;
 781
 782         rtl8187_set_anaparam(priv, true);
 783
 784         /* BRSR (Basic Rate Set Register) on 8187B looks to be the same as
 785          * RESP_RATE on 8187L in Realtek sources: each bit should be each
 786          * one of the 12 rates, all are enabled */
 787         rtl818x_iowrite16(priv, (__le16 *)0xFF34, 0x0FFF);
 788
 789         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 790         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 791         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 792
 793         /* Auto Rate Fallback Register (ARFR): 1M-54M setting */
 794         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFE0, 0x0FFF, 1);
 795         rtl818x_iowrite8_idx(priv, (u8 *)0xFFE2, 0x00, 1);
 796
 797         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFD4, 0xFFFF, 1);
 798
 799         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 800                          RTL818X_EEPROM_CMD_CONFIG);
 801         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 802         rtl818x_iowrite8(priv, &priv->map->CONFIG1, (reg & 0x3F) | 0x80);
 803         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 804                          RTL818X_EEPROM_CMD_NORMAL);
 805
 806         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 807         for (i = 0; i < ARRAY_SIZE(rtl8187b_reg_table); i++) {
 808                 rtl818x_iowrite8_idx(priv,
 809                                      (u8 *)(uintptr_t)
 810                                      (rtl8187b_reg_table[i][0] | 0xFF00),
 811                                      rtl8187b_reg_table[i][1],
 812                                      rtl8187b_reg_table[i][2]);
 813         }
 814
 815         rtl818x_iowrite16(priv, &priv->map->TID_AC_MAP, 0xFA50);
 816         rtl818x_iowrite16(priv, &priv->map->INT_MIG, 0);
 817
 818         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF0, 0, 1);
 819         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF4, 0, 1);
 820         rtl818x_iowrite8_idx(priv, (u8 *)0xFFF8, 0, 1);
 821
 822         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x00004001);
 823
 824         /* RFSW_CTRL register */
 825         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x569A, 2);
 826
 827         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x0480);
 828         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x2488);
 829         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FFF);
 830         msleep(100);
 831
 832         priv->rf->init(dev);
 833
 834         reg = RTL818X_CMD_TX_ENABLE | RTL818X_CMD_RX_ENABLE;
 835         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 836         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 837
 838         rtl818x_iowrite8(priv, (u8 *)0xFE41, 0xF4);
 839         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x00);
 840         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 841         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 842         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x0F);
 843         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 844         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 845
 846         reg = rtl818x_ioread8(priv, (u8 *)0xFFDB);
 847         rtl818x_iowrite8(priv, (u8 *)0xFFDB, reg | (1 << 2));
 848         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x59FA, 3);
 849         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF74, 0x59D2, 3);
 850         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF76, 0x59D2, 3);
 851         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF78, 0x19FA, 3);
 852         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7A, 0x19FA, 3);
 853         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7C, 0x00D0, 3);
 854         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0);
 855         rtl818x_iowrite8_idx(priv, (u8 *)0xFF80, 0x0F, 1);
 856         rtl818x_iowrite8_idx(priv, (u8 *)0xFF83, 0x03, 1);
 857         rtl818x_iowrite8(priv, (u8 *)0xFFDA, 0x10);
 858         rtl818x_iowrite8_idx(priv, (u8 *)0xFF4D, 0x08, 2);
 859
 860         rtl818x_iowrite32(priv, &priv->map->HSSI_PARA, 0x0600321B);
 861
 862         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFEC, 0x0800, 1);
 863
 864         priv->slot_time = 0x9;
 865         priv->aifsn[0] = 2; /* AIFSN[AC_VO] */
 866         priv->aifsn[1] = 2; /* AIFSN[AC_VI] */
 867         priv->aifsn[2] = 7; /* AIFSN[AC_BK] */
 868         priv->aifsn[3] = 3; /* AIFSN[AC_BE] */
 869         rtl818x_iowrite8(priv, &priv->map->ACM_CONTROL, 0);
 870
 871         /* ENEDCA flag must always be set, transmit issues? */
 872         rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_ENEDCA);
 873
 874         return 0;
 875 }
 876
 877 static void rtl8187_work(struct work_struct *work)
 878 {
 879         /* The RTL8187 returns the retry count through register 0xFFFA. In
 880          * addition, it appears to be a cumulative retry count, not the
 881          * value for the current TX packet. When multiple TX entries are
 882          * waiting in the queue, the retry count will be the total for all.
 883          * The "error" may matter for purposes of rate setting, but there is
 884          * no other choice with this hardware.
 885          */
 886         struct rtl8187_priv *priv = container_of(work, struct rtl8187_priv,
 887                                     work.work);
 888         struct ieee80211_tx_info *info;
 889         struct ieee80211_hw *dev = priv->dev;
 890         static u16 retry;
 891         u16 tmp;
 892         u16 avg_retry;
 893         int length;
 894
 895         mutex_lock(&priv->conf_mutex);
 896         tmp = rtl818x_ioread16(priv, (__le16 *)0xFFFA);
 897         length = skb_queue_len(&priv->b_tx_status.queue);
 898         if (unlikely(!length))
 899                 length = 1;
 900         if (unlikely(tmp < retry))
 901                 tmp = retry;
 902         avg_retry = (tmp - retry) / length;
 903         while (skb_queue_len(&priv->b_tx_status.queue) > 0) {
 904                 struct sk_buff *old_skb;
 905
 906                 old_skb = skb_dequeue(&priv->b_tx_status.queue);
 907                 info = IEEE80211_SKB_CB(old_skb);
 908                 info->status.rates[0].count = avg_retry + 1;
 909                 if (info->status.rates[0].count > RETRY_COUNT)
 910                         info->flags &= ~IEEE80211_TX_STAT_ACK;
 911                 ieee80211_tx_status_irqsafe(dev, old_skb);
 912         }
 913         retry = tmp;
 914         mutex_unlock(&priv->conf_mutex);
 915 }
 916
 917 static int rtl8187_start(struct ieee80211_hw *dev)
 918 {
 919         struct rtl8187_priv *priv = dev->priv;
 920         u32 reg;
 921         int ret;
 922
 923         mutex_lock(&priv->conf_mutex);
 924
 925         ret = (!priv->is_rtl8187b) ? rtl8187_init_hw(dev) :
 926                                      rtl8187b_init_hw(dev);
 927         if (ret)
 928                 goto rtl8187_start_exit;
 929
 930         init_usb_anchor(&priv->anchored);
 931         priv->dev = dev;
 932
 933         if (priv->is_rtl8187b) {
 934                 reg = RTL818X_RX_CONF_MGMT |
 935                       RTL818X_RX_CONF_DATA |
 936                       RTL818X_RX_CONF_BROADCAST |
 937                       RTL818X_RX_CONF_NICMAC |
 938                       RTL818X_RX_CONF_BSSID |
 939                       (7 << 13 /* RX FIFO threshold NONE */) |
 940                       (7 << 10 /* MAX RX DMA */) |
 941                       RTL818X_RX_CONF_RX_AUTORESETPHY |
 942                       RTL818X_RX_CONF_ONLYERLPKT |
 943                       RTL818X_RX_CONF_MULTICAST;
 944                 priv->rx_conf = reg;
 945                 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 946
 947                 reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 948                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 949                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 950                 reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 951                 rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 952
 953                 rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 954                                   RTL818X_TX_CONF_HW_SEQNUM |
 955                                   RTL818X_TX_CONF_DISREQQSIZE |
 956                                   (RETRY_COUNT << 8  /* short retry limit */) |
 957                                   (RETRY_COUNT << 0  /* long retry limit */) |
 958                                   (7 << 21 /* MAX TX DMA */));
 959                 rtl8187_init_urbs(dev);
 960                 rtl8187b_init_status_urb(dev);
 961                 goto rtl8187_start_exit;
 962         }
 963
 964         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 965
 966         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 967         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 968
 969         rtl8187_init_urbs(dev);
 970
 971         reg = RTL818X_RX_CONF_ONLYERLPKT |
 972               RTL818X_RX_CONF_RX_AUTORESETPHY |
 973               RTL818X_RX_CONF_BSSID |
 974               RTL818X_RX_CONF_MGMT |
 975               RTL818X_RX_CONF_DATA |
 976               (7 << 13 /* RX FIFO threshold NONE */) |
 977               (7 << 10 /* MAX RX DMA */) |
 978               RTL818X_RX_CONF_BROADCAST |
 979               RTL818X_RX_CONF_NICMAC;
 980
 981         priv->rx_conf = reg;
 982         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 983
 984         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 985         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 986         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 987         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 988
 989         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 990         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 991         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 992         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 993         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 994
 995         reg  = RTL818X_TX_CONF_CW_MIN |
 996                (7 << 21 /* MAX TX DMA */) |
 997                RTL818X_TX_CONF_NO_ICV;
 998         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 999
1000         reg = rtl818x_ioread8(priv, &priv->map->CMD);
1001         reg |= RTL818X_CMD_TX_ENABLE;
1002         reg |= RTL818X_CMD_RX_ENABLE;
1003         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
1004         INIT_DELAYED_WORK(&priv->work, rtl8187_work);
1005
1006 rtl8187_start_exit:
1007         mutex_unlock(&priv->conf_mutex);
1008         return ret;
1009 }
1010
1011 static void rtl8187_stop(struct ieee80211_hw *dev)
1012 {
1013         struct rtl8187_priv *priv = dev->priv;
1014         struct sk_buff *skb;
1015         u32 reg;
1016
1017         mutex_lock(&priv->conf_mutex);
1018         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
1019
1020         reg = rtl818x_ioread8(priv, &priv->map->CMD);
1021         reg &= ~RTL818X_CMD_TX_ENABLE;
1022         reg &= ~RTL818X_CMD_RX_ENABLE;
1023         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
1024
1025         priv->rf->stop(dev);
1026         rtl8187_set_anaparam(priv, false);
1027
1028         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1029         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
1030         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
1031         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1032
1033         while ((skb = skb_dequeue(&priv->b_tx_status.queue)))
1034                 dev_kfree_skb_any(skb);
1035
1036         usb_kill_anchored_urbs(&priv->anchored);
1037         mutex_unlock(&priv->conf_mutex);
1038
1039         if (!priv->is_rtl8187b)
1040                 cancel_delayed_work_sync(&priv->work);
1041 }
1042
1043 static u64 rtl8187_get_tsf(struct ieee80211_hw *dev, struct ieee80211_vif *vif)
1044 {
1045         struct rtl8187_priv *priv = dev->priv;
1046
1047         return rtl818x_ioread32(priv, &priv->map->TSFT[0]) |
1048                (u64)(rtl818x_ioread32(priv, &priv->map->TSFT[1])) << 32;
1049 }
1050
1051
1052 static void rtl8187_beacon_work(struct work_struct *work)
1053 {
1054         struct rtl8187_vif *vif_priv =
1055                 container_of(work, struct rtl8187_vif, beacon_work.work);
1056         struct ieee80211_vif *vif =
1057                 container_of((void *)vif_priv, struct ieee80211_vif, drv_priv);
1058         struct ieee80211_hw *dev = vif_priv->dev;
1059         struct ieee80211_mgmt *mgmt;
1060         struct sk_buff *skb;
1061
1062         /* don't overflow the tx ring */
1063         if (ieee80211_queue_stopped(dev, 0))
1064                 goto resched;
1065
1066         /* grab a fresh beacon */
1067         skb = ieee80211_beacon_get(dev, vif);
1068         if (!skb)
1069                 goto resched;
1070
1071         /*
1072          * update beacon timestamp w/ TSF value
1073          * TODO: make hardware update beacon timestamp
1074          */
1075         mgmt = (struct ieee80211_mgmt *)skb->data;
1076         mgmt->u.beacon.timestamp = cpu_to_le64(rtl8187_get_tsf(dev, vif));
1077
1078         /* TODO: use actual beacon queue */
1079         skb_set_queue_mapping(skb, 0);
1080
1081         rtl8187_tx(dev, NULL, skb);
1082
1083 resched:
1084         /*
1085          * schedule next beacon
1086          * TODO: use hardware support for beacon timing
1087          */
1088         schedule_delayed_work(&vif_priv->beacon_work,
1089                         usecs_to_jiffies(1024 * vif->bss_conf.beacon_int));
1090 }
1091
1092
1093 static int rtl8187_add_interface(struct ieee80211_hw *dev,
1094                                  struct ieee80211_vif *vif)
1095 {
1096         struct rtl8187_priv *priv = dev->priv;
1097         struct rtl8187_vif *vif_priv;
1098         int i;
1099         int ret = -EOPNOTSUPP;
1100
1101         mutex_lock(&priv->conf_mutex);
1102         if (priv->vif)
1103                 goto exit;
1104
1105         switch (vif->type) {
1106         case NL80211_IFTYPE_STATION:
1107         case NL80211_IFTYPE_ADHOC:
1108                 break;
1109         default:
1110                 goto exit;
1111         }
1112
1113         ret = 0;
1114         priv->vif = vif;
1115
1116         /* Initialize driver private area */
1117         vif_priv = (struct rtl8187_vif *)&vif->drv_priv;
1118         vif_priv->dev = dev;
1119         INIT_DELAYED_WORK(&vif_priv->beacon_work, rtl8187_beacon_work);
1120         vif_priv->enable_beacon = false;
1121
1122
1123         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1124         for (i = 0; i < ETH_ALEN; i++)
1125                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
1126                                  ((u8 *)vif->addr)[i]);
1127         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1128
1129 exit:
1130         mutex_unlock(&priv->conf_mutex);
1131         return ret;
1132 }
1133
1134 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
1135                                      struct ieee80211_vif *vif)
1136 {
1137         struct rtl8187_priv *priv = dev->priv;
1138         mutex_lock(&priv->conf_mutex);
1139         priv->vif = NULL;
1140         mutex_unlock(&priv->conf_mutex);
1141 }
1142
1143 static int rtl8187_config(struct ieee80211_hw *dev, u32 changed)
1144 {
1145         struct rtl8187_priv *priv = dev->priv;
1146         struct ieee80211_conf *conf = &dev->conf;
1147         u32 reg;
1148
1149         mutex_lock(&priv->conf_mutex);
1150         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1151         /* Enable TX loopback on MAC level to avoid TX during channel
1152          * changes, as this has be seen to causes problems and the
1153          * card will stop work until next reset
1154          */
1155         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
1156                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
1157         priv->rf->set_chan(dev, conf);
1158         msleep(10);
1159         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
1160
1161         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
1162         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
1163         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
1164         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
1165         mutex_unlock(&priv->conf_mutex);
1166         return 0;
1167 }
1168
1169 /*
1170  * With 8187B, AC_*_PARAM clashes with FEMR definition in struct rtl818x_csr for
1171  * example. Thus we have to use raw values for AC_*_PARAM register addresses.
1172  */
1173 static __le32 *rtl8187b_ac_addr[4] = {
1174         (__le32 *) 0xFFF0, /* AC_VO */
1175         (__le32 *) 0xFFF4, /* AC_VI */
1176         (__le32 *) 0xFFFC, /* AC_BK */
1177         (__le32 *) 0xFFF8, /* AC_BE */
1178 };
1179
1180 #define SIFS_TIME 0xa
1181
1182 static void rtl8187_conf_erp(struct rtl8187_priv *priv, bool use_short_slot,
1183                              bool use_short_preamble)
1184 {
1185         if (priv->is_rtl8187b) {
1186                 u8 difs, eifs;
1187                 u16 ack_timeout;
1188                 int queue;
1189
1190                 if (use_short_slot) {
1191                         priv->slot_time = 0x9;
1192                         difs = 0x1c;
1193                         eifs = 0x53;
1194                 } else {
1195                         priv->slot_time = 0x14;
1196                         difs = 0x32;
1197                         eifs = 0x5b;
1198                 }
1199                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1200                 rtl818x_iowrite8(priv, &priv->map->SLOT, priv->slot_time);
1201                 rtl818x_iowrite8(priv, &priv->map->DIFS, difs);
1202
1203                 /*
1204                  * BRSR+1 on 8187B is in fact EIFS register
1205                  * Value in units of 4 us
1206                  */
1207                 rtl818x_iowrite8(priv, (u8 *)&priv->map->BRSR + 1, eifs);
1208
1209                 /*
1210                  * For 8187B, CARRIER_SENSE_COUNTER is in fact ack timeout
1211                  * register. In units of 4 us like eifs register
1212                  * ack_timeout = ack duration + plcp + difs + preamble
1213                  */
1214                 ack_timeout = 112 + 48 + difs;
1215                 if (use_short_preamble)
1216                         ack_timeout += 72;
1217                 else
1218                         ack_timeout += 144;
1219                 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER,
1220                                  DIV_ROUND_UP(ack_timeout, 4));
1221
1222                 for (queue = 0; queue < 4; queue++)
1223                         rtl818x_iowrite8(priv, (u8 *) rtl8187b_ac_addr[queue],
1224                                          priv->aifsn[queue] * priv->slot_time +
1225                                          SIFS_TIME);
1226         } else {
1227                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1228                 if (use_short_slot) {
1229                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
1230                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
1231                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
1232                 } else {
1233                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
1234                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
1235                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
1236                 }
1237         }
1238 }
1239
1240 static void rtl8187_bss_info_changed(struct ieee80211_hw *dev,
1241                                      struct ieee80211_vif *vif,
1242                                      struct ieee80211_bss_conf *info,
1243                                      u32 changed)
1244 {
1245         struct rtl8187_priv *priv = dev->priv;
1246         struct rtl8187_vif *vif_priv;
1247         int i;
1248         u8 reg;
1249
1250         vif_priv = (struct rtl8187_vif *)&vif->drv_priv;
1251
1252         if (changed & BSS_CHANGED_BSSID) {
1253                 mutex_lock(&priv->conf_mutex);
1254                 for (i = 0; i < ETH_ALEN; i++)
1255                         rtl818x_iowrite8(priv, &priv->map->BSSID[i],
1256                                          info->bssid[i]);
1257
1258                 if (priv->is_rtl8187b)
1259                         reg = RTL818X_MSR_ENEDCA;
1260                 else
1261                         reg = 0;
1262
1263                 if (is_valid_ether_addr(info->bssid)) {
1264                         if (vif->type == NL80211_IFTYPE_ADHOC)
1265                                 reg |= RTL818X_MSR_ADHOC;
1266                         else
1267                                 reg |= RTL818X_MSR_INFRA;
1268                 }
1269                 else
1270                         reg |= RTL818X_MSR_NO_LINK;
1271
1272                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1273
1274                 mutex_unlock(&priv->conf_mutex);
1275         }
1276
1277         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE))
1278                 rtl8187_conf_erp(priv, info->use_short_slot,
1279                                  info->use_short_preamble);
1280
1281         if (changed & BSS_CHANGED_BEACON_ENABLED)
1282                 vif_priv->enable_beacon = info->enable_beacon;
1283
1284         if (changed & (BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON)) {
1285                 cancel_delayed_work_sync(&vif_priv->beacon_work);
1286                 if (vif_priv->enable_beacon)
1287                         schedule_work(&vif_priv->beacon_work.work);
1288         }
1289
1290 }
1291
1292 static u64 rtl8187_prepare_multicast(struct ieee80211_hw *dev,
1293                                      struct netdev_hw_addr_list *mc_list)
1294 {
1295         return netdev_hw_addr_list_count(mc_list);
1296 }
1297
1298 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
1299                                      unsigned int changed_flags,
1300                                      unsigned int *total_flags,
1301                                      u64 multicast)
1302 {
1303         struct rtl8187_priv *priv = dev->priv;
1304
1305         if (changed_flags & FIF_FCSFAIL)
1306                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
1307         if (changed_flags & FIF_CONTROL)
1308                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
1309         if (changed_flags & FIF_OTHER_BSS)
1310                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
1311         if (*total_flags & FIF_ALLMULTI || multicast > 0)
1312                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
1313         else
1314                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
1315
1316         *total_flags = 0;
1317
1318         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
1319                 *total_flags |= FIF_FCSFAIL;
1320         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
1321                 *total_flags |= FIF_CONTROL;
1322         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
1323                 *total_flags |= FIF_OTHER_BSS;
1324         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
1325                 *total_flags |= FIF_ALLMULTI;
1326
1327         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
1328 }
1329
1330 static int rtl8187_conf_tx(struct ieee80211_hw *dev,
1331                            struct ieee80211_vif *vif, u16 queue,
1332                            const struct ieee80211_tx_queue_params *params)
1333 {
1334         struct rtl8187_priv *priv = dev->priv;
1335         u8 cw_min, cw_max;
1336
1337         if (queue > 3)
1338                 return -EINVAL;
1339
1340         cw_min = fls(params->cw_min);
1341         cw_max = fls(params->cw_max);
1342
1343         if (priv->is_rtl8187b) {
1344                 priv->aifsn[queue] = params->aifs;
1345
1346                 /*
1347                  * This is the structure of AC_*_PARAM registers in 8187B:
1348                  * - TXOP limit field, bit offset = 16
1349                  * - ECWmax, bit offset = 12
1350                  * - ECWmin, bit offset = 8
1351                  * - AIFS, bit offset = 0
1352                  */
1353                 rtl818x_iowrite32(priv, rtl8187b_ac_addr[queue],
1354                                   (params->txop << 16) | (cw_max << 12) |
1355                                   (cw_min << 8) | (params->aifs *
1356                                   priv->slot_time + SIFS_TIME));
1357         } else {
1358                 if (queue != 0)
1359                         return -EINVAL;
1360
1361                 rtl818x_iowrite8(priv, &priv->map->CW_VAL,
1362                                  cw_min | (cw_max << 4));
1363         }
1364         return 0;
1365 }
1366
1367
1368 static const struct ieee80211_ops rtl8187_ops = {
1369         .tx                     = rtl8187_tx,
1370         .start                  = rtl8187_start,
1371         .stop                   = rtl8187_stop,
1372         .add_interface          = rtl8187_add_interface,
1373         .remove_interface       = rtl8187_remove_interface,
1374         .config                 = rtl8187_config,
1375         .bss_info_changed       = rtl8187_bss_info_changed,
1376         .prepare_multicast      = rtl8187_prepare_multicast,
1377         .configure_filter       = rtl8187_configure_filter,
1378         .conf_tx                = rtl8187_conf_tx,
1379         .rfkill_poll            = rtl8187_rfkill_poll,
1380         .get_tsf                = rtl8187_get_tsf,
1381 };
1382
1383 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
1384 {
1385         struct ieee80211_hw *dev = eeprom->data;
1386         struct rtl8187_priv *priv = dev->priv;
1387         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1388
1389         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
1390         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
1391         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
1392         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
1393 }
1394
1395 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
1396 {
1397         struct ieee80211_hw *dev = eeprom->data;
1398         struct rtl8187_priv *priv = dev->priv;
1399         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
1400
1401         if (eeprom->reg_data_in)
1402                 reg |= RTL818X_EEPROM_CMD_WRITE;
1403         if (eeprom->reg_data_out)
1404                 reg |= RTL818X_EEPROM_CMD_READ;
1405         if (eeprom->reg_data_clock)
1406                 reg |= RTL818X_EEPROM_CMD_CK;
1407         if (eeprom->reg_chip_select)
1408                 reg |= RTL818X_EEPROM_CMD_CS;
1409
1410         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
1411         udelay(10);
1412 }
1413
1414 static int rtl8187_probe(struct usb_interface *intf,
1415                                    const struct usb_device_id *id)
1416 {
1417         struct usb_device *udev = interface_to_usbdev(intf);
1418         struct ieee80211_hw *dev;
1419         struct rtl8187_priv *priv;
1420         struct eeprom_93cx6 eeprom;
1421         struct ieee80211_channel *channel;
1422         const char *chip_name;
1423         u16 txpwr, reg;
1424         u16 product_id = le16_to_cpu(udev->descriptor.idProduct);
1425         int err, i;
1426         u8 mac_addr[ETH_ALEN];
1427
1428         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
1429         if (!dev) {
1430                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
1431                 return -ENOMEM;
1432         }
1433
1434         priv = dev->priv;
1435         priv->is_rtl8187b = (id->driver_info == DEVICE_RTL8187B);
1436
1437         /* allocate "DMA aware" buffer for register accesses */
1438         priv->io_dmabuf = kmalloc(sizeof(*priv->io_dmabuf), GFP_KERNEL);
1439         if (!priv->io_dmabuf) {
1440                 err = -ENOMEM;
1441                 goto err_free_dev;
1442         }
1443         mutex_init(&priv->io_mutex);
1444
1445         SET_IEEE80211_DEV(dev, &intf->dev);
1446         usb_set_intfdata(intf, dev);
1447         priv->udev = udev;
1448
1449         usb_get_dev(udev);
1450
1451         skb_queue_head_init(&priv->rx_queue);
1452
1453         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
1454         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
1455
1456         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
1457         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
1458         priv->map = (struct rtl818x_csr *)0xFF00;
1459
1460         priv->band.band = IEEE80211_BAND_2GHZ;
1461         priv->band.channels = priv->channels;
1462         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
1463         priv->band.bitrates = priv->rates;
1464         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
1465         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
1466
1467
1468         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1469                      IEEE80211_HW_SIGNAL_DBM |
1470                      IEEE80211_HW_RX_INCLUDES_FCS;
1471         /* Initialize rate-control variables */
1472         dev->max_rates = 1;
1473         dev->max_rate_tries = RETRY_COUNT;
1474
1475         eeprom.data = dev;
1476         eeprom.register_read = rtl8187_eeprom_register_read;
1477         eeprom.register_write = rtl8187_eeprom_register_write;
1478         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
1479                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
1480         else
1481                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
1482
1483         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1484         udelay(10);
1485
1486         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
1487                                (__le16 __force *)mac_addr, 3);
1488         if (!is_valid_ether_addr(mac_addr)) {
1489                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
1490                        "generated MAC address\n");
1491                 eth_random_addr(mac_addr);
1492         }
1493         SET_IEEE80211_PERM_ADDR(dev, mac_addr);
1494
1495         channel = priv->channels;
1496         for (i = 0; i < 3; i++) {
1497                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
1498                                   &txpwr);
1499                 (*channel++).hw_value = txpwr & 0xFF;
1500                 (*channel++).hw_value = txpwr >> 8;
1501         }
1502         for (i = 0; i < 2; i++) {
1503                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
1504                                   &txpwr);
1505                 (*channel++).hw_value = txpwr & 0xFF;
1506                 (*channel++).hw_value = txpwr >> 8;
1507         }
1508
1509         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
1510                           &priv->txpwr_base);
1511
1512         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
1513         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
1514         /* 0 means asic B-cut, we should use SW 3 wire
1515          * bit-by-bit banging for radio. 1 means we can use
1516          * USB specific request to write radio registers */
1517         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
1518         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
1519         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1520
1521         if (!priv->is_rtl8187b) {
1522                 u32 reg32;
1523                 reg32 = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1524                 reg32 &= RTL818X_TX_CONF_HWVER_MASK;
1525                 switch (reg32) {
1526                 case RTL818X_TX_CONF_R8187vD_B:
1527                         /* Some RTL8187B devices have a USB ID of 0x8187
1528                          * detect them here */
1529                         chip_name = "RTL8187BvB(early)";
1530                         priv->is_rtl8187b = 1;
1531                         priv->hw_rev = RTL8187BvB;
1532                         break;
1533                 case RTL818X_TX_CONF_R8187vD:
1534                         chip_name = "RTL8187vD";
1535                         break;
1536                 default:
1537                         chip_name = "RTL8187vB (default)";
1538                 }
1539        } else {
1540                 /*
1541                  * Force USB request to write radio registers for 8187B, Realtek
1542                  * only uses it in their sources
1543                  */
1544                 /*if (priv->asic_rev == 0) {
1545                         printk(KERN_WARNING "rtl8187: Forcing use of USB "
1546                                "requests to write to radio registers\n");
1547                         priv->asic_rev = 1;
1548                 }*/
1549                 switch (rtl818x_ioread8(priv, (u8 *)0xFFE1)) {
1550                 case RTL818X_R8187B_B:
1551                         chip_name = "RTL8187BvB";
1552                         priv->hw_rev = RTL8187BvB;
1553                         break;
1554                 case RTL818X_R8187B_D:
1555                         chip_name = "RTL8187BvD";
1556                         priv->hw_rev = RTL8187BvD;
1557                         break;
1558                 case RTL818X_R8187B_E:
1559                         chip_name = "RTL8187BvE";
1560                         priv->hw_rev = RTL8187BvE;
1561                         break;
1562                 default:
1563                         chip_name = "RTL8187BvB (default)";
1564                         priv->hw_rev = RTL8187BvB;
1565                 }
1566         }
1567
1568         if (!priv->is_rtl8187b) {
1569                 for (i = 0; i < 2; i++) {
1570                         eeprom_93cx6_read(&eeprom,
1571                                           RTL8187_EEPROM_TXPWR_CHAN_6 + i,
1572                                           &txpwr);
1573                         (*channel++).hw_value = txpwr & 0xFF;
1574                         (*channel++).hw_value = txpwr >> 8;
1575                 }
1576         } else {
1577                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6,
1578                                   &txpwr);
1579                 (*channel++).hw_value = txpwr & 0xFF;
1580
1581                 eeprom_93cx6_read(&eeprom, 0x0A, &txpwr);
1582                 (*channel++).hw_value = txpwr & 0xFF;
1583
1584                 eeprom_93cx6_read(&eeprom, 0x1C, &txpwr);
1585                 (*channel++).hw_value = txpwr & 0xFF;
1586                 (*channel++).hw_value = txpwr >> 8;
1587         }
1588         /* Handle the differing rfkill GPIO bit in different models */
1589         priv->rfkill_mask = RFKILL_MASK_8187_89_97;
1590         if (product_id == 0x8197 || product_id == 0x8198) {
1591                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_SELECT_GPIO, &reg);
1592                 if (reg & 0xFF00)
1593                         priv->rfkill_mask = RFKILL_MASK_8198;
1594         }
1595         dev->vif_data_size = sizeof(struct rtl8187_vif);
1596         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1597                                       BIT(NL80211_IFTYPE_ADHOC) ;
1598
1599         if ((id->driver_info == DEVICE_RTL8187) && priv->is_rtl8187b)
1600                 printk(KERN_INFO "rtl8187: inconsistency between id with OEM"
1601                        " info!\n");
1602
1603         priv->rf = rtl8187_detect_rf(dev);
1604         dev->extra_tx_headroom = (!priv->is_rtl8187b) ?
1605                                   sizeof(struct rtl8187_tx_hdr) :
1606                                   sizeof(struct rtl8187b_tx_hdr);
1607         if (!priv->is_rtl8187b)
1608                 dev->queues = 1;
1609         else
1610                 dev->queues = 4;
1611
1612         err = ieee80211_register_hw(dev);
1613         if (err) {
1614                 printk(KERN_ERR "rtl8187: Cannot register device\n");
1615                 goto err_free_dmabuf;
1616         }
1617         mutex_init(&priv->conf_mutex);
1618         skb_queue_head_init(&priv->b_tx_status.queue);
1619
1620         wiphy_info(dev->wiphy, "hwaddr %pM, %s V%d + %s, rfkill mask %d\n",
1621                    mac_addr, chip_name, priv->asic_rev, priv->rf->name,
1622                    priv->rfkill_mask);
1623
1624 #ifdef CONFIG_RTL8187_LEDS
1625         eeprom_93cx6_read(&eeprom, 0x3F, &reg);
1626         reg &= 0xFF;
1627         rtl8187_leds_init(dev, reg);
1628 #endif
1629         rtl8187_rfkill_init(dev);
1630
1631         return 0;
1632
1633  err_free_dmabuf:
1634         kfree(priv->io_dmabuf);
1635  err_free_dev:
1636         ieee80211_free_hw(dev);
1637         usb_set_intfdata(intf, NULL);
1638         usb_put_dev(udev);
1639         return err;
1640 }
1641
1642 static void rtl8187_disconnect(struct usb_interface *intf)
1643 {
1644         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1645         struct rtl8187_priv *priv;
1646
1647         if (!dev)
1648                 return;
1649
1650 #ifdef CONFIG_RTL8187_LEDS
1651         rtl8187_leds_exit(dev);
1652 #endif
1653         rtl8187_rfkill_exit(dev);
1654         ieee80211_unregister_hw(dev);
1655
1656         priv = dev->priv;
1657         usb_reset_device(priv->udev);
1658         usb_put_dev(interface_to_usbdev(intf));
1659         kfree(priv->io_dmabuf);
1660         ieee80211_free_hw(dev);
1661 }
1662
1663 static struct usb_driver rtl8187_driver = {
1664         .name           = KBUILD_MODNAME,
1665         .id_table       = rtl8187_table,
1666         .probe          = rtl8187_probe,
1667         .disconnect     = rtl8187_disconnect,
1668         .disable_hub_initiated_lpm = 1,
1669 };
1670
1671 module_usb_driver(rtl8187_driver);