drivers/net/wireless/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  * Magic delays and register offsets below are taken from the original
  11  * r8187 driver sources.  Thanks to Realtek for their support!
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License version 2 as
  15  * published by the Free Software Foundation.
  16  */
  17
  18 #include <linux/init.h>
  19 #include <linux/usb.h>
  20 #include <linux/delay.h>
  21 #include <linux/etherdevice.h>
  22 #include <linux/eeprom_93cx6.h>
  23 #include <net/mac80211.h>
  24
  25 #include "rtl8187.h"
  26 #include "rtl8187_rtl8225.h"
  27
  28 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  29 MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>");
  30 MODULE_DESCRIPTION("RTL8187/RTL8187B USB wireless driver");
  31 MODULE_LICENSE("GPL");
  32
  33 static struct usb_device_id rtl8187_table[] __devinitdata = {
  34         /* Asus */
  35         {USB_DEVICE(0x0b05, 0x171d), .driver_info = DEVICE_RTL8187},
  36         /* Belkin */
  37         {USB_DEVICE(0x050d, 0x705e), .driver_info = DEVICE_RTL8187B},
  38         /* Realtek */
  39         {USB_DEVICE(0x0bda, 0x8187), .driver_info = DEVICE_RTL8187},
  40         {USB_DEVICE(0x0bda, 0x8189), .driver_info = DEVICE_RTL8187B},
  41         {USB_DEVICE(0x0bda, 0x8197), .driver_info = DEVICE_RTL8187B},
  42         {USB_DEVICE(0x0bda, 0x8198), .driver_info = DEVICE_RTL8187B},
  43         /* Netgear */
  44         {USB_DEVICE(0x0846, 0x6100), .driver_info = DEVICE_RTL8187},
  45         {USB_DEVICE(0x0846, 0x6a00), .driver_info = DEVICE_RTL8187},
  46         {USB_DEVICE(0x0846, 0x4260), .driver_info = DEVICE_RTL8187B},
  47         /* HP */
  48         {USB_DEVICE(0x03f0, 0xca02), .driver_info = DEVICE_RTL8187},
  49         /* Sitecom */
  50         {USB_DEVICE(0x0df6, 0x000d), .driver_info = DEVICE_RTL8187},
  51         {}
  52 };
  53
  54 MODULE_DEVICE_TABLE(usb, rtl8187_table);
  55
  56 static const struct ieee80211_rate rtl818x_rates[] = {
  57         { .bitrate = 10, .hw_value = 0, },
  58         { .bitrate = 20, .hw_value = 1, },
  59         { .bitrate = 55, .hw_value = 2, },
  60         { .bitrate = 110, .hw_value = 3, },
  61         { .bitrate = 60, .hw_value = 4, },
  62         { .bitrate = 90, .hw_value = 5, },
  63         { .bitrate = 120, .hw_value = 6, },
  64         { .bitrate = 180, .hw_value = 7, },
  65         { .bitrate = 240, .hw_value = 8, },
  66         { .bitrate = 360, .hw_value = 9, },
  67         { .bitrate = 480, .hw_value = 10, },
  68         { .bitrate = 540, .hw_value = 11, },
  69 };
  70
  71 static const struct ieee80211_channel rtl818x_channels[] = {
  72         { .center_freq = 2412 },
  73         { .center_freq = 2417 },
  74         { .center_freq = 2422 },
  75         { .center_freq = 2427 },
  76         { .center_freq = 2432 },
  77         { .center_freq = 2437 },
  78         { .center_freq = 2442 },
  79         { .center_freq = 2447 },
  80         { .center_freq = 2452 },
  81         { .center_freq = 2457 },
  82         { .center_freq = 2462 },
  83         { .center_freq = 2467 },
  84         { .center_freq = 2472 },
  85         { .center_freq = 2484 },
  86 };
  87
  88 static void rtl8187_iowrite_async_cb(struct urb *urb)
  89 {
  90         kfree(urb->context);
  91         usb_free_urb(urb);
  92 }
  93
  94 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
  95                                   void *data, u16 len)
  96 {
  97         struct usb_ctrlrequest *dr;
  98         struct urb *urb;
  99         struct rtl8187_async_write_data {
 100                 u8 data[4];
 101                 struct usb_ctrlrequest dr;
 102         } *buf;
 103         int rc;
 104
 105         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
 106         if (!buf)
 107                 return;
 108
 109         urb = usb_alloc_urb(0, GFP_ATOMIC);
 110         if (!urb) {
 111                 kfree(buf);
 112                 return;
 113         }
 114
 115         dr = &buf->dr;
 116
 117         dr->bRequestType = RTL8187_REQT_WRITE;
 118         dr->bRequest = RTL8187_REQ_SET_REG;
 119         dr->wValue = addr;
 120         dr->wIndex = 0;
 121         dr->wLength = cpu_to_le16(len);
 122
 123         memcpy(buf, data, len);
 124
 125         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
 126                              (unsigned char *)dr, buf, len,
 127                              rtl8187_iowrite_async_cb, buf);
 128         rc = usb_submit_urb(urb, GFP_ATOMIC);
 129         if (rc < 0) {
 130                 kfree(buf);
 131                 usb_free_urb(urb);
 132         }
 133 }
 134
 135 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
 136                                            __le32 *addr, u32 val)
 137 {
 138         __le32 buf = cpu_to_le32(val);
 139
 140         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
 141                               &buf, sizeof(buf));
 142 }
 143
 144 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
 145 {
 146         struct rtl8187_priv *priv = dev->priv;
 147
 148         data <<= 8;
 149         data |= addr | 0x80;
 150
 151         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
 152         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
 153         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
 154         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
 155 }
 156
 157 static void rtl8187_tx_cb(struct urb *urb)
 158 {
 159         struct sk_buff *skb = (struct sk_buff *)urb->context;
 160         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 161         struct ieee80211_hw *hw = info->rate_driver_data[0];
 162         struct rtl8187_priv *priv = hw->priv;
 163
 164         usb_free_urb(info->rate_driver_data[1]);
 165         skb_pull(skb, priv->is_rtl8187b ? sizeof(struct rtl8187b_tx_hdr) :
 166                                           sizeof(struct rtl8187_tx_hdr));
 167         ieee80211_tx_info_clear_status(info);
 168         info->flags |= IEEE80211_TX_STAT_ACK;
 169         ieee80211_tx_status_irqsafe(hw, skb);
 170 }
 171
 172 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 173 {
 174         struct rtl8187_priv *priv = dev->priv;
 175         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 176         unsigned int ep;
 177         void *buf;
 178         struct urb *urb;
 179         __le16 rts_dur = 0;
 180         u32 flags;
 181         int rc;
 182
 183         urb = usb_alloc_urb(0, GFP_ATOMIC);
 184         if (!urb) {
 185                 kfree_skb(skb);
 186                 return 0;
 187         }
 188
 189         flags = skb->len;
 190         flags |= RTL818X_TX_DESC_FLAG_NO_ENC;
 191
 192         flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
 193         if (ieee80211_has_morefrags(((struct ieee80211_hdr *)skb->data)->frame_control))
 194                 flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
 195         if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 196                 flags |= RTL818X_TX_DESC_FLAG_RTS;
 197                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 198                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 199                                                  skb->len, info);
 200         } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 201                 flags |= RTL818X_TX_DESC_FLAG_CTS;
 202                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 203         }
 204
 205         if (!priv->is_rtl8187b) {
 206                 struct rtl8187_tx_hdr *hdr =
 207                         (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 208                 hdr->flags = cpu_to_le32(flags);
 209                 hdr->len = 0;
 210                 hdr->rts_duration = rts_dur;
 211                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
 212                 buf = hdr;
 213
 214                 ep = 2;
 215         } else {
 216                 /* fc needs to be calculated before skb_push() */
 217                 unsigned int epmap[4] = { 6, 7, 5, 4 };
 218                 struct ieee80211_hdr *tx_hdr =
 219                         (struct ieee80211_hdr *)(skb->data);
 220                 u16 fc = le16_to_cpu(tx_hdr->frame_control);
 221
 222                 struct rtl8187b_tx_hdr *hdr =
 223                         (struct rtl8187b_tx_hdr *)skb_push(skb, sizeof(*hdr));
 224                 struct ieee80211_rate *txrate =
 225                         ieee80211_get_tx_rate(dev, info);
 226                 memset(hdr, 0, sizeof(*hdr));
 227                 hdr->flags = cpu_to_le32(flags);
 228                 hdr->rts_duration = rts_dur;
 229                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
 230                 hdr->tx_duration =
 231                         ieee80211_generic_frame_duration(dev, priv->vif,
 232                                                          skb->len, txrate);
 233                 buf = hdr;
 234
 235                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
 236                         ep = 12;
 237                 else
 238                         ep = epmap[skb_get_queue_mapping(skb)];
 239         }
 240
 241         info->rate_driver_data[0] = dev;
 242         info->rate_driver_data[1] = urb;
 243
 244         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, ep),
 245                           buf, skb->len, rtl8187_tx_cb, skb);
 246         rc = usb_submit_urb(urb, GFP_ATOMIC);
 247         if (rc < 0) {
 248                 usb_free_urb(urb);
 249                 kfree_skb(skb);
 250         }
 251
 252         return 0;
 253 }
 254
 255 static void rtl8187_rx_cb(struct urb *urb)
 256 {
 257         struct sk_buff *skb = (struct sk_buff *)urb->context;
 258         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 259         struct ieee80211_hw *dev = info->dev;
 260         struct rtl8187_priv *priv = dev->priv;
 261         struct ieee80211_rx_status rx_status = { 0 };
 262         int rate, signal;
 263         u32 flags;
 264         u32 quality;
 265
 266         spin_lock(&priv->rx_queue.lock);
 267         if (skb->next)
 268                 __skb_unlink(skb, &priv->rx_queue);
 269         else {
 270                 spin_unlock(&priv->rx_queue.lock);
 271                 return;
 272         }
 273         spin_unlock(&priv->rx_queue.lock);
 274
 275         if (unlikely(urb->status)) {
 276                 usb_free_urb(urb);
 277                 dev_kfree_skb_irq(skb);
 278                 return;
 279         }
 280
 281         skb_put(skb, urb->actual_length);
 282         if (!priv->is_rtl8187b) {
 283                 struct rtl8187_rx_hdr *hdr =
 284                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
 285                 flags = le32_to_cpu(hdr->flags);
 286                 signal = hdr->signal & 0x7f;
 287                 rx_status.antenna = (hdr->signal >> 7) & 1;
 288                 rx_status.noise = hdr->noise;
 289                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 290                 priv->quality = signal;
 291                 rx_status.qual = priv->quality;
 292                 priv->noise = hdr->noise;
 293                 rate = (flags >> 20) & 0xF;
 294                 if (rate > 3) { /* OFDM rate */
 295                         if (signal > 90)
 296                                 signal = 90;
 297                         else if (signal < 25)
 298                                 signal = 25;
 299                         signal = 90 - signal;
 300                 } else {        /* CCK rate */
 301                         if (signal > 95)
 302                                 signal = 95;
 303                         else if (signal < 30)
 304                                 signal = 30;
 305                         signal = 95 - signal;
 306                 }
 307                 rx_status.signal = signal;
 308                 priv->signal = signal;
 309         } else {
 310                 struct rtl8187b_rx_hdr *hdr =
 311                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
 312                 /* The Realtek datasheet for the RTL8187B shows that the RX
 313                  * header contains the following quantities: signal quality,
 314                  * RSSI, AGC, the received power in dB, and the measured SNR.
 315                  * In testing, none of these quantities show qualitative
 316                  * agreement with AP signal strength, except for the AGC,
 317                  * which is inversely proportional to the strength of the
 318                  * signal. In the following, the quality and signal strength
 319                  * are derived from the AGC. The arbitrary scaling constants
 320                  * are chosen to make the results close to the values obtained
 321                  * for a BCM4312 using b43 as the driver. The noise is ignored
 322                  * for now.
 323                  */
 324                 flags = le32_to_cpu(hdr->flags);
 325                 quality = 170 - hdr->agc;
 326                 if (quality > 100)
 327                         quality = 100;
 328                 signal = 14 - hdr->agc / 2;
 329                 rx_status.qual = quality;
 330                 priv->quality = quality;
 331                 rx_status.signal = signal;
 332                 priv->signal = signal;
 333                 rx_status.antenna = (hdr->rssi >> 7) & 1;
 334                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
 335                 rate = (flags >> 20) & 0xF;
 336         }
 337
 338         skb_trim(skb, flags & 0x0FFF);
 339         rx_status.rate_idx = rate;
 340         rx_status.freq = dev->conf.channel->center_freq;
 341         rx_status.band = dev->conf.channel->band;
 342         rx_status.flag |= RX_FLAG_TSFT;
 343         if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
 344                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 345         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 346
 347         skb = dev_alloc_skb(RTL8187_MAX_RX);
 348         if (unlikely(!skb)) {
 349                 usb_free_urb(urb);
 350                 /* TODO check rx queue length and refill *somewhere* */
 351                 return;
 352         }
 353
 354         info = (struct rtl8187_rx_info *)skb->cb;
 355         info->urb = urb;
 356         info->dev = dev;
 357         urb->transfer_buffer = skb_tail_pointer(skb);
 358         urb->context = skb;
 359         skb_queue_tail(&priv->rx_queue, skb);
 360
 361         usb_submit_urb(urb, GFP_ATOMIC);
 362 }
 363
 364 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 365 {
 366         struct rtl8187_priv *priv = dev->priv;
 367         struct urb *entry;
 368         struct sk_buff *skb;
 369         struct rtl8187_rx_info *info;
 370
 371         while (skb_queue_len(&priv->rx_queue) < 8) {
 372                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 373                 if (!skb)
 374                         break;
 375                 entry = usb_alloc_urb(0, GFP_KERNEL);
 376                 if (!entry) {
 377                         kfree_skb(skb);
 378                         break;
 379                 }
 380                 usb_fill_bulk_urb(entry, priv->udev,
 381                                   usb_rcvbulkpipe(priv->udev,
 382                                   priv->is_rtl8187b ? 3 : 1),
 383                                   skb_tail_pointer(skb),
 384                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 385                 info = (struct rtl8187_rx_info *)skb->cb;
 386                 info->urb = entry;
 387                 info->dev = dev;
 388                 skb_queue_tail(&priv->rx_queue, skb);
 389                 usb_submit_urb(entry, GFP_KERNEL);
 390         }
 391
 392         return 0;
 393 }
 394
 395 static int rtl8187_cmd_reset(struct ieee80211_hw *dev)
 396 {
 397         struct rtl8187_priv *priv = dev->priv;
 398         u8 reg;
 399         int i;
 400
 401         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 402         reg &= (1 << 1);
 403         reg |= RTL818X_CMD_RESET;
 404         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 405
 406         i = 10;
 407         do {
 408                 msleep(2);
 409                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 410                       RTL818X_CMD_RESET))
 411                         break;
 412         } while (--i);
 413
 414         if (!i) {
 415                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 416                 return -ETIMEDOUT;
 417         }
 418
 419         /* reload registers from eeprom */
 420         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 421
 422         i = 10;
 423         do {
 424                 msleep(4);
 425                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 426                       RTL818X_EEPROM_CMD_CONFIG))
 427                         break;
 428         } while (--i);
 429
 430         if (!i) {
 431                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 432                        wiphy_name(dev->wiphy));
 433                 return -ETIMEDOUT;
 434         }
 435
 436         return 0;
 437 }
 438
 439 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 440 {
 441         struct rtl8187_priv *priv = dev->priv;
 442         u8 reg;
 443         int res;
 444
 445         /* reset */
 446         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 447                          RTL818X_EEPROM_CMD_CONFIG);
 448         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 449         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg |
 450                          RTL818X_CONFIG3_ANAPARAM_WRITE);
 451         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
 452                           RTL8187_RTL8225_ANAPARAM_ON);
 453         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
 454                           RTL8187_RTL8225_ANAPARAM2_ON);
 455         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg &
 456                          ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 457         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 458                          RTL818X_EEPROM_CMD_NORMAL);
 459
 460         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 461
 462         msleep(200);
 463         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 464         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 465         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 466         msleep(200);
 467
 468         res = rtl8187_cmd_reset(dev);
 469         if (res)
 470                 return res;
 471
 472         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 473         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 474         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 475                         reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 476         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
 477                           RTL8187_RTL8225_ANAPARAM_ON);
 478         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
 479                           RTL8187_RTL8225_ANAPARAM2_ON);
 480         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 481                         reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 482         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 483
 484         /* setup card */
 485         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 486         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 487
 488         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 489         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 490         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 491
 492         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 493
 494         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 495         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 496         reg &= 0x3F;
 497         reg |= 0x80;
 498         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 499
 500         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 501
 502         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 503         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 504         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 505
 506         // TODO: set RESP_RATE and BRSR properly
 507         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 508         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 509
 510         /* host_usb_init */
 511         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 512         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 513         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 514         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 515         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 516         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 517         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 518         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 519         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 520         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 521         msleep(100);
 522
 523         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 524         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 525         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 526         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 527                          RTL818X_EEPROM_CMD_CONFIG);
 528         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 529         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 530                          RTL818X_EEPROM_CMD_NORMAL);
 531         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 532         msleep(100);
 533
 534         priv->rf->init(dev);
 535
 536         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 537         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 538         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 539         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 540         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 541         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 542         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 543
 544         return 0;
 545 }
 546
 547 static const u8 rtl8187b_reg_table[][3] = {
 548         {0xF0, 0x32, 0}, {0xF1, 0x32, 0}, {0xF2, 0x00, 0}, {0xF3, 0x00, 0},
 549         {0xF4, 0x32, 0}, {0xF5, 0x43, 0}, {0xF6, 0x00, 0}, {0xF7, 0x00, 0},
 550         {0xF8, 0x46, 0}, {0xF9, 0xA4, 0}, {0xFA, 0x00, 0}, {0xFB, 0x00, 0},
 551         {0xFC, 0x96, 0}, {0xFD, 0xA4, 0}, {0xFE, 0x00, 0}, {0xFF, 0x00, 0},
 552
 553         {0x58, 0x4B, 1}, {0x59, 0x00, 1}, {0x5A, 0x4B, 1}, {0x5B, 0x00, 1},
 554         {0x60, 0x4B, 1}, {0x61, 0x09, 1}, {0x62, 0x4B, 1}, {0x63, 0x09, 1},
 555         {0xCE, 0x0F, 1}, {0xCF, 0x00, 1}, {0xE0, 0xFF, 1}, {0xE1, 0x0F, 1},
 556         {0xE2, 0x00, 1}, {0xF0, 0x4E, 1}, {0xF1, 0x01, 1}, {0xF2, 0x02, 1},
 557         {0xF3, 0x03, 1}, {0xF4, 0x04, 1}, {0xF5, 0x05, 1}, {0xF6, 0x06, 1},
 558         {0xF7, 0x07, 1}, {0xF8, 0x08, 1},
 559
 560         {0x4E, 0x00, 2}, {0x0C, 0x04, 2}, {0x21, 0x61, 2}, {0x22, 0x68, 2},
 561         {0x23, 0x6F, 2}, {0x24, 0x76, 2}, {0x25, 0x7D, 2}, {0x26, 0x84, 2},
 562         {0x27, 0x8D, 2}, {0x4D, 0x08, 2}, {0x50, 0x05, 2}, {0x51, 0xF5, 2},
 563         {0x52, 0x04, 2}, {0x53, 0xA0, 2}, {0x54, 0x1F, 2}, {0x55, 0x23, 2},
 564         {0x56, 0x45, 2}, {0x57, 0x67, 2}, {0x58, 0x08, 2}, {0x59, 0x08, 2},
 565         {0x5A, 0x08, 2}, {0x5B, 0x08, 2}, {0x60, 0x08, 2}, {0x61, 0x08, 2},
 566         {0x62, 0x08, 2}, {0x63, 0x08, 2}, {0x64, 0xCF, 2}, {0x72, 0x56, 2},
 567         {0x73, 0x9A, 2},
 568
 569         {0x34, 0xF0, 0}, {0x35, 0x0F, 0}, {0x5B, 0x40, 0}, {0x84, 0x88, 0},
 570         {0x85, 0x24, 0}, {0x88, 0x54, 0}, {0x8B, 0xB8, 0}, {0x8C, 0x07, 0},
 571         {0x8D, 0x00, 0}, {0x94, 0x1B, 0}, {0x95, 0x12, 0}, {0x96, 0x00, 0},
 572         {0x97, 0x06, 0}, {0x9D, 0x1A, 0}, {0x9F, 0x10, 0}, {0xB4, 0x22, 0},
 573         {0xBE, 0x80, 0}, {0xDB, 0x00, 0}, {0xEE, 0x00, 0}, {0x91, 0x03, 0},
 574
 575         {0x4C, 0x00, 2}, {0x9F, 0x00, 3}, {0x8C, 0x01, 0}, {0x8D, 0x10, 0},
 576         {0x8E, 0x08, 0}, {0x8F, 0x00, 0}
 577 };
 578
 579 static int rtl8187b_init_hw(struct ieee80211_hw *dev)
 580 {
 581         struct rtl8187_priv *priv = dev->priv;
 582         int res, i;
 583         u8 reg;
 584
 585         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 586                          RTL818X_EEPROM_CMD_CONFIG);
 587
 588         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 589         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE | RTL818X_CONFIG3_GNT_SELECT;
 590         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 591         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
 592                           RTL8187B_RTL8225_ANAPARAM2_ON);
 593         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
 594                           RTL8187B_RTL8225_ANAPARAM_ON);
 595         rtl818x_iowrite8(priv, &priv->map->ANAPARAM3,
 596                          RTL8187B_RTL8225_ANAPARAM3_ON);
 597
 598         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0x10);
 599         reg = rtl818x_ioread8(priv, (u8 *)0xFF62);
 600         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg & ~(1 << 5));
 601         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg | (1 << 5));
 602
 603         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 604         reg &= ~RTL818X_CONFIG3_ANAPARAM_WRITE;
 605         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 606
 607         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 608                          RTL818X_EEPROM_CMD_NORMAL);
 609
 610         res = rtl8187_cmd_reset(dev);
 611         if (res)
 612                 return res;
 613
 614         rtl818x_iowrite16(priv, (__le16 *)0xFF2D, 0x0FFF);
 615         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 616         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 617         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 618         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 619         reg |= RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT |
 620                RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 621         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 622
 623         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFE0, 0x0FFF, 1);
 624         reg = rtl818x_ioread8(priv, &priv->map->RATE_FALLBACK);
 625         reg |= RTL818X_RATE_FALLBACK_ENABLE;
 626         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, reg);
 627
 628         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 629         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 630         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFD4, 0xFFFF, 1);
 631
 632         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 633                          RTL818X_EEPROM_CMD_CONFIG);
 634         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 635         rtl818x_iowrite8(priv, &priv->map->CONFIG1, (reg & 0x3F) | 0x80);
 636         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 637                          RTL818X_EEPROM_CMD_NORMAL);
 638
 639         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 640         for (i = 0; i < ARRAY_SIZE(rtl8187b_reg_table); i++) {
 641                 rtl818x_iowrite8_idx(priv,
 642                                      (u8 *)(uintptr_t)
 643                                      (rtl8187b_reg_table[i][0] | 0xFF00),
 644                                      rtl8187b_reg_table[i][1],
 645                                      rtl8187b_reg_table[i][2]);
 646         }
 647
 648         rtl818x_iowrite16(priv, &priv->map->TID_AC_MAP, 0xFA50);
 649         rtl818x_iowrite16(priv, &priv->map->INT_MIG, 0);
 650
 651         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF0, 0, 1);
 652         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF4, 0, 1);
 653         rtl818x_iowrite8_idx(priv, (u8 *)0xFFF8, 0, 1);
 654
 655         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x00004001);
 656
 657         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x569A, 2);
 658
 659         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 660                          RTL818X_EEPROM_CMD_CONFIG);
 661         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 662         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE;
 663         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 664         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
 665                          RTL818X_EEPROM_CMD_NORMAL);
 666
 667         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x0480);
 668         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x2488);
 669         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FFF);
 670         msleep(100);
 671
 672         priv->rf->init(dev);
 673
 674         reg = RTL818X_CMD_TX_ENABLE | RTL818X_CMD_RX_ENABLE;
 675         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 676         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 677
 678         rtl818x_iowrite8(priv, (u8 *)0xFE41, 0xF4);
 679         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x00);
 680         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 681         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 682         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x0F);
 683         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
 684         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
 685
 686         reg = rtl818x_ioread8(priv, (u8 *)0xFFDB);
 687         rtl818x_iowrite8(priv, (u8 *)0xFFDB, reg | (1 << 2));
 688         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x59FA, 3);
 689         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF74, 0x59D2, 3);
 690         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF76, 0x59D2, 3);
 691         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF78, 0x19FA, 3);
 692         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7A, 0x19FA, 3);
 693         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7C, 0x00D0, 3);
 694         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0);
 695         rtl818x_iowrite8_idx(priv, (u8 *)0xFF80, 0x0F, 1);
 696         rtl818x_iowrite8_idx(priv, (u8 *)0xFF83, 0x03, 1);
 697         rtl818x_iowrite8(priv, (u8 *)0xFFDA, 0x10);
 698         rtl818x_iowrite8_idx(priv, (u8 *)0xFF4D, 0x08, 2);
 699
 700         rtl818x_iowrite32(priv, &priv->map->HSSI_PARA, 0x0600321B);
 701
 702         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFEC, 0x0800, 1);
 703
 704         return 0;
 705 }
 706
 707 static int rtl8187_start(struct ieee80211_hw *dev)
 708 {
 709         struct rtl8187_priv *priv = dev->priv;
 710         u32 reg;
 711         int ret;
 712
 713         ret = (!priv->is_rtl8187b) ? rtl8187_init_hw(dev) :
 714                                      rtl8187b_init_hw(dev);
 715         if (ret)
 716                 return ret;
 717
 718         mutex_lock(&priv->conf_mutex);
 719         if (priv->is_rtl8187b) {
 720                 reg = RTL818X_RX_CONF_MGMT |
 721                       RTL818X_RX_CONF_DATA |
 722                       RTL818X_RX_CONF_BROADCAST |
 723                       RTL818X_RX_CONF_NICMAC |
 724                       RTL818X_RX_CONF_BSSID |
 725                       (7 << 13 /* RX FIFO threshold NONE */) |
 726                       (7 << 10 /* MAX RX DMA */) |
 727                       RTL818X_RX_CONF_RX_AUTORESETPHY |
 728                       RTL818X_RX_CONF_ONLYERLPKT |
 729                       RTL818X_RX_CONF_MULTICAST;
 730                 priv->rx_conf = reg;
 731                 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 732
 733                 rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 734                                   RTL818X_TX_CONF_HW_SEQNUM |
 735                                   RTL818X_TX_CONF_DISREQQSIZE |
 736                                   (7 << 8  /* short retry limit */) |
 737                                   (7 << 0  /* long retry limit */) |
 738                                   (7 << 21 /* MAX TX DMA */));
 739                 rtl8187_init_urbs(dev);
 740                 mutex_unlock(&priv->conf_mutex);
 741                 return 0;
 742         }
 743
 744         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 745
 746         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 747         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 748
 749         rtl8187_init_urbs(dev);
 750
 751         reg = RTL818X_RX_CONF_ONLYERLPKT |
 752               RTL818X_RX_CONF_RX_AUTORESETPHY |
 753               RTL818X_RX_CONF_BSSID |
 754               RTL818X_RX_CONF_MGMT |
 755               RTL818X_RX_CONF_DATA |
 756               (7 << 13 /* RX FIFO threshold NONE */) |
 757               (7 << 10 /* MAX RX DMA */) |
 758               RTL818X_RX_CONF_BROADCAST |
 759               RTL818X_RX_CONF_NICMAC;
 760
 761         priv->rx_conf = reg;
 762         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 763
 764         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 765         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 766         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 767         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 768
 769         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 770         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 771         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 772         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 773         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 774
 775         reg  = RTL818X_TX_CONF_CW_MIN |
 776                (7 << 21 /* MAX TX DMA */) |
 777                RTL818X_TX_CONF_NO_ICV;
 778         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 779
 780         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 781         reg |= RTL818X_CMD_TX_ENABLE;
 782         reg |= RTL818X_CMD_RX_ENABLE;
 783         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 784         mutex_unlock(&priv->conf_mutex);
 785
 786         return 0;
 787 }
 788
 789 static void rtl8187_stop(struct ieee80211_hw *dev)
 790 {
 791         struct rtl8187_priv *priv = dev->priv;
 792         struct rtl8187_rx_info *info;
 793         struct sk_buff *skb;
 794         u32 reg;
 795
 796         mutex_lock(&priv->conf_mutex);
 797         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 798
 799         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 800         reg &= ~RTL818X_CMD_TX_ENABLE;
 801         reg &= ~RTL818X_CMD_RX_ENABLE;
 802         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 803
 804         priv->rf->stop(dev);
 805
 806         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 807         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 808         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 809         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 810
 811         while ((skb = skb_dequeue(&priv->rx_queue))) {
 812                 info = (struct rtl8187_rx_info *)skb->cb;
 813                 usb_kill_urb(info->urb);
 814                 kfree_skb(skb);
 815         }
 816         mutex_unlock(&priv->conf_mutex);
 817 }
 818
 819 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 820                                  struct ieee80211_if_init_conf *conf)
 821 {
 822         struct rtl8187_priv *priv = dev->priv;
 823         int i;
 824
 825         if (priv->mode != NL80211_IFTYPE_MONITOR)
 826                 return -EOPNOTSUPP;
 827
 828         switch (conf->type) {
 829         case NL80211_IFTYPE_STATION:
 830                 priv->mode = conf->type;
 831                 break;
 832         default:
 833                 return -EOPNOTSUPP;
 834         }
 835
 836         mutex_lock(&priv->conf_mutex);
 837         priv->vif = conf->vif;
 838
 839         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 840         for (i = 0; i < ETH_ALEN; i++)
 841                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
 842                                  ((u8 *)conf->mac_addr)[i]);
 843         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 844
 845         mutex_unlock(&priv->conf_mutex);
 846         return 0;
 847 }
 848
 849 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
 850                                      struct ieee80211_if_init_conf *conf)
 851 {
 852         struct rtl8187_priv *priv = dev->priv;
 853         mutex_lock(&priv->conf_mutex);
 854         priv->mode = NL80211_IFTYPE_MONITOR;
 855         priv->vif = NULL;
 856         mutex_unlock(&priv->conf_mutex);
 857 }
 858
 859 static int rtl8187_config(struct ieee80211_hw *dev, u32 changed)
 860 {
 861         struct rtl8187_priv *priv = dev->priv;
 862         struct ieee80211_conf *conf = &dev->conf;
 863         u32 reg;
 864
 865         mutex_lock(&priv->conf_mutex);
 866         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 867         /* Enable TX loopback on MAC level to avoid TX during channel
 868          * changes, as this has be seen to causes problems and the
 869          * card will stop work until next reset
 870          */
 871         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 872                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
 873         msleep(10);
 874         priv->rf->set_chan(dev, conf);
 875         msleep(10);
 876         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 877
 878         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 879         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
 880         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 881         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
 882         mutex_unlock(&priv->conf_mutex);
 883         return 0;
 884 }
 885
 886 static int rtl8187_config_interface(struct ieee80211_hw *dev,
 887                                     struct ieee80211_vif *vif,
 888                                     struct ieee80211_if_conf *conf)
 889 {
 890         struct rtl8187_priv *priv = dev->priv;
 891         int i;
 892         u8 reg;
 893
 894         mutex_lock(&priv->conf_mutex);
 895         for (i = 0; i < ETH_ALEN; i++)
 896                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 897
 898         if (is_valid_ether_addr(conf->bssid)) {
 899                 reg = RTL818X_MSR_INFRA;
 900                 if (priv->is_rtl8187b)
 901                         reg |= RTL818X_MSR_ENEDCA;
 902                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
 903         } else {
 904                 reg = RTL818X_MSR_NO_LINK;
 905                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
 906         }
 907
 908         mutex_unlock(&priv->conf_mutex);
 909         return 0;
 910 }
 911
 912 static void rtl8187_conf_erp(struct rtl8187_priv *priv, bool use_short_slot,
 913                              bool use_short_preamble)
 914 {
 915         if (priv->is_rtl8187b) {
 916                 u8 difs, eifs, slot_time;
 917                 u16 ack_timeout;
 918
 919                 if (use_short_slot) {
 920                         slot_time = 0x9;
 921                         difs = 0x1c;
 922                         eifs = 0x53;
 923                 } else {
 924                         slot_time = 0x14;
 925                         difs = 0x32;
 926                         eifs = 0x5b;
 927                 }
 928                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0xa);
 929                 rtl818x_iowrite8(priv, &priv->map->SLOT, slot_time);
 930                 rtl818x_iowrite8(priv, &priv->map->DIFS, difs);
 931
 932                 /*
 933                  * BRSR+1 on 8187B is in fact EIFS register
 934                  * Value in units of 4 us
 935                  */
 936                 rtl818x_iowrite8(priv, (u8 *)&priv->map->BRSR + 1, eifs);
 937
 938                 /*
 939                  * For 8187B, CARRIER_SENSE_COUNTER is in fact ack timeout
 940                  * register. In units of 4 us like eifs register
 941                  * ack_timeout = ack duration + plcp + difs + preamble
 942                  */
 943                 ack_timeout = 112 + 48 + difs;
 944                 if (use_short_preamble)
 945                         ack_timeout += 72;
 946                 else
 947                         ack_timeout += 144;
 948                 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER,
 949                                  DIV_ROUND_UP(ack_timeout, 4));
 950         } else {
 951                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
 952                 if (use_short_slot) {
 953                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
 954                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
 955                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
 956                         rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0x73);
 957                 } else {
 958                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
 959                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
 960                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
 961                         rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0xa5);
 962                 }
 963         }
 964 }
 965
 966 static void rtl8187_bss_info_changed(struct ieee80211_hw *dev,
 967                                      struct ieee80211_vif *vif,
 968                                      struct ieee80211_bss_conf *info,
 969                                      u32 changed)
 970 {
 971         struct rtl8187_priv *priv = dev->priv;
 972
 973         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE))
 974                 rtl8187_conf_erp(priv, info->use_short_slot,
 975                                  info->use_short_preamble);
 976 }
 977
 978 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
 979                                      unsigned int changed_flags,
 980                                      unsigned int *total_flags,
 981                                      int mc_count, struct dev_addr_list *mclist)
 982 {
 983         struct rtl8187_priv *priv = dev->priv;
 984
 985         if (changed_flags & FIF_FCSFAIL)
 986                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
 987         if (changed_flags & FIF_CONTROL)
 988                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
 989         if (changed_flags & FIF_OTHER_BSS)
 990                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
 991         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
 992                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
 993         else
 994                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
 995
 996         *total_flags = 0;
 997
 998         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
 999                 *total_flags |= FIF_FCSFAIL;
1000         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
1001                 *total_flags |= FIF_CONTROL;
1002         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
1003                 *total_flags |= FIF_OTHER_BSS;
1004         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
1005                 *total_flags |= FIF_ALLMULTI;
1006
1007         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
1008 }
1009
1010 static const struct ieee80211_ops rtl8187_ops = {
1011         .tx                     = rtl8187_tx,
1012         .start                  = rtl8187_start,
1013         .stop                   = rtl8187_stop,
1014         .add_interface          = rtl8187_add_interface,
1015         .remove_interface       = rtl8187_remove_interface,
1016         .config                 = rtl8187_config,
1017         .config_interface       = rtl8187_config_interface,
1018         .bss_info_changed       = rtl8187_bss_info_changed,
1019         .configure_filter       = rtl8187_configure_filter,
1020 };
1021
1022 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
1023 {
1024         struct ieee80211_hw *dev = eeprom->data;
1025         struct rtl8187_priv *priv = dev->priv;
1026         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1027
1028         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
1029         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
1030         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
1031         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
1032 }
1033
1034 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
1035 {
1036         struct ieee80211_hw *dev = eeprom->data;
1037         struct rtl8187_priv *priv = dev->priv;
1038         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
1039
1040         if (eeprom->reg_data_in)
1041                 reg |= RTL818X_EEPROM_CMD_WRITE;
1042         if (eeprom->reg_data_out)
1043                 reg |= RTL818X_EEPROM_CMD_READ;
1044         if (eeprom->reg_data_clock)
1045                 reg |= RTL818X_EEPROM_CMD_CK;
1046         if (eeprom->reg_chip_select)
1047                 reg |= RTL818X_EEPROM_CMD_CS;
1048
1049         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
1050         udelay(10);
1051 }
1052
1053 static int __devinit rtl8187_probe(struct usb_interface *intf,
1054                                    const struct usb_device_id *id)
1055 {
1056         struct usb_device *udev = interface_to_usbdev(intf);
1057         struct ieee80211_hw *dev;
1058         struct rtl8187_priv *priv;
1059         struct eeprom_93cx6 eeprom;
1060         struct ieee80211_channel *channel;
1061         const char *chip_name;
1062         u16 txpwr, reg;
1063         int err, i;
1064
1065         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
1066         if (!dev) {
1067                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
1068                 return -ENOMEM;
1069         }
1070
1071         priv = dev->priv;
1072         priv->is_rtl8187b = (id->driver_info == DEVICE_RTL8187B);
1073
1074         SET_IEEE80211_DEV(dev, &intf->dev);
1075         usb_set_intfdata(intf, dev);
1076         priv->udev = udev;
1077
1078         usb_get_dev(udev);
1079
1080         skb_queue_head_init(&priv->rx_queue);
1081
1082         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
1083         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
1084
1085         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
1086         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
1087         priv->map = (struct rtl818x_csr *)0xFF00;
1088
1089         priv->band.band = IEEE80211_BAND_2GHZ;
1090         priv->band.channels = priv->channels;
1091         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
1092         priv->band.bitrates = priv->rates;
1093         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
1094         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
1095
1096
1097         priv->mode = NL80211_IFTYPE_MONITOR;
1098         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1099                      IEEE80211_HW_RX_INCLUDES_FCS;
1100
1101         eeprom.data = dev;
1102         eeprom.register_read = rtl8187_eeprom_register_read;
1103         eeprom.register_write = rtl8187_eeprom_register_write;
1104         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
1105                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
1106         else
1107                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
1108
1109         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1110         udelay(10);
1111
1112         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
1113                                (__le16 __force *)dev->wiphy->perm_addr, 3);
1114         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
1115                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
1116                        "generated MAC address\n");
1117                 random_ether_addr(dev->wiphy->perm_addr);
1118         }
1119
1120         channel = priv->channels;
1121         for (i = 0; i < 3; i++) {
1122                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
1123                                   &txpwr);
1124                 (*channel++).hw_value = txpwr & 0xFF;
1125                 (*channel++).hw_value = txpwr >> 8;
1126         }
1127         for (i = 0; i < 2; i++) {
1128                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
1129                                   &txpwr);
1130                 (*channel++).hw_value = txpwr & 0xFF;
1131                 (*channel++).hw_value = txpwr >> 8;
1132         }
1133
1134         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
1135                           &priv->txpwr_base);
1136
1137         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
1138         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
1139         /* 0 means asic B-cut, we should use SW 3 wire
1140          * bit-by-bit banging for radio. 1 means we can use
1141          * USB specific request to write radio registers */
1142         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
1143         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
1144         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1145
1146         if (!priv->is_rtl8187b) {
1147                 u32 reg32;
1148                 reg32 = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1149                 reg32 &= RTL818X_TX_CONF_HWVER_MASK;
1150                 switch (reg32) {
1151                 case RTL818X_TX_CONF_R8187vD_B:
1152                         /* Some RTL8187B devices have a USB ID of 0x8187
1153                          * detect them here */
1154                         chip_name = "RTL8187BvB(early)";
1155                         priv->is_rtl8187b = 1;
1156                         priv->hw_rev = RTL8187BvB;
1157                         break;
1158                 case RTL818X_TX_CONF_R8187vD:
1159                         chip_name = "RTL8187vD";
1160                         break;
1161                 default:
1162                         chip_name = "RTL8187vB (default)";
1163                 }
1164        } else {
1165                 /*
1166                  * Force USB request to write radio registers for 8187B, Realtek
1167                  * only uses it in their sources
1168                  */
1169                 /*if (priv->asic_rev == 0) {
1170                         printk(KERN_WARNING "rtl8187: Forcing use of USB "
1171                                "requests to write to radio registers\n");
1172                         priv->asic_rev = 1;
1173                 }*/
1174                 switch (rtl818x_ioread8(priv, (u8 *)0xFFE1)) {
1175                 case RTL818X_R8187B_B:
1176                         chip_name = "RTL8187BvB";
1177                         priv->hw_rev = RTL8187BvB;
1178                         break;
1179                 case RTL818X_R8187B_D:
1180                         chip_name = "RTL8187BvD";
1181                         priv->hw_rev = RTL8187BvD;
1182                         break;
1183                 case RTL818X_R8187B_E:
1184                         chip_name = "RTL8187BvE";
1185                         priv->hw_rev = RTL8187BvE;
1186                         break;
1187                 default:
1188                         chip_name = "RTL8187BvB (default)";
1189                         priv->hw_rev = RTL8187BvB;
1190                 }
1191         }
1192
1193         if (!priv->is_rtl8187b) {
1194                 for (i = 0; i < 2; i++) {
1195                         eeprom_93cx6_read(&eeprom,
1196                                           RTL8187_EEPROM_TXPWR_CHAN_6 + i,
1197                                           &txpwr);
1198                         (*channel++).hw_value = txpwr & 0xFF;
1199                         (*channel++).hw_value = txpwr >> 8;
1200                 }
1201         } else {
1202                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6,
1203                                   &txpwr);
1204                 (*channel++).hw_value = txpwr & 0xFF;
1205
1206                 eeprom_93cx6_read(&eeprom, 0x0A, &txpwr);
1207                 (*channel++).hw_value = txpwr & 0xFF;
1208
1209                 eeprom_93cx6_read(&eeprom, 0x1C, &txpwr);
1210                 (*channel++).hw_value = txpwr & 0xFF;
1211                 (*channel++).hw_value = txpwr >> 8;
1212         }
1213
1214         if (priv->is_rtl8187b) {
1215                 printk(KERN_WARNING "rtl8187: 8187B chip detected. Support "
1216                         "is EXPERIMENTAL, and could damage your\n"
1217                         "         hardware, use at your own risk\n");
1218                 dev->flags |= IEEE80211_HW_SIGNAL_DBM;
1219         } else {
1220                 dev->flags |= IEEE80211_HW_SIGNAL_UNSPEC;
1221                 dev->max_signal = 65;
1222         }
1223
1224         /*
1225          * XXX: Once this driver supports anything that requires
1226          *      beacons it must implement IEEE80211_TX_CTL_ASSIGN_SEQ.
1227          */
1228         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1229
1230         if ((id->driver_info == DEVICE_RTL8187) && priv->is_rtl8187b)
1231                 printk(KERN_INFO "rtl8187: inconsistency between id with OEM"
1232                        " info!\n");
1233
1234         priv->rf = rtl8187_detect_rf(dev);
1235         dev->extra_tx_headroom = (!priv->is_rtl8187b) ?
1236                                   sizeof(struct rtl8187_tx_hdr) :
1237                                   sizeof(struct rtl8187b_tx_hdr);
1238         if (!priv->is_rtl8187b)
1239                 dev->queues = 1;
1240         else
1241                 dev->queues = 4;
1242
1243         err = ieee80211_register_hw(dev);
1244         if (err) {
1245                 printk(KERN_ERR "rtl8187: Cannot register device\n");
1246                 goto err_free_dev;
1247         }
1248         mutex_init(&priv->conf_mutex);
1249
1250         printk(KERN_INFO "%s: hwaddr %pM, %s V%d + %s\n",
1251                wiphy_name(dev->wiphy), dev->wiphy->perm_addr,
1252                chip_name, priv->asic_rev, priv->rf->name);
1253
1254         return 0;
1255
1256  err_free_dev:
1257         ieee80211_free_hw(dev);
1258         usb_set_intfdata(intf, NULL);
1259         usb_put_dev(udev);
1260         return err;
1261 }
1262
1263 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
1264 {
1265         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1266         struct rtl8187_priv *priv;
1267
1268         if (!dev)
1269                 return;
1270
1271         ieee80211_unregister_hw(dev);
1272
1273         priv = dev->priv;
1274         usb_put_dev(interface_to_usbdev(intf));
1275         ieee80211_free_hw(dev);
1276 }
1277
1278 static struct usb_driver rtl8187_driver = {
1279         .name           = KBUILD_MODNAME,
1280         .id_table       = rtl8187_table,
1281         .probe          = rtl8187_probe,
1282         .disconnect     = __devexit_p(rtl8187_disconnect),
1283 };
1284
1285 static int __init rtl8187_init(void)
1286 {
1287         return usb_register(&rtl8187_driver);
1288 }
1289
1290 static void __exit rtl8187_exit(void)
1291 {
1292         usb_deregister(&rtl8187_driver);
1293 }
1294
1295 module_init(rtl8187_init);
1296 module_exit(rtl8187_exit);