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 USB wireless driver");
  31 MODULE_LICENSE("GPL");
  32
  33 static struct usb_device_id rtl8187_table[] __devinitdata = {
  34         /* Realtek */
  35         {USB_DEVICE(0x0bda, 0x8187)},
  36         /* Netgear */
  37         {USB_DEVICE(0x0846, 0x6100)},
  38         {USB_DEVICE(0x0846, 0x6a00)},
  39         /* HP */
  40         {USB_DEVICE(0x03f0, 0xca02)},
  41         /* Sitecom */
  42         {USB_DEVICE(0x0df6, 0x000d)},
  43         {}
  44 };
  45
  46 MODULE_DEVICE_TABLE(usb, rtl8187_table);
  47
  48 static const struct ieee80211_rate rtl818x_rates[] = {
  49         { .bitrate = 10, .hw_value = 0, },
  50         { .bitrate = 20, .hw_value = 1, },
  51         { .bitrate = 55, .hw_value = 2, },
  52         { .bitrate = 110, .hw_value = 3, },
  53         { .bitrate = 60, .hw_value = 4, },
  54         { .bitrate = 90, .hw_value = 5, },
  55         { .bitrate = 120, .hw_value = 6, },
  56         { .bitrate = 180, .hw_value = 7, },
  57         { .bitrate = 240, .hw_value = 8, },
  58         { .bitrate = 360, .hw_value = 9, },
  59         { .bitrate = 480, .hw_value = 10, },
  60         { .bitrate = 540, .hw_value = 11, },
  61 };
  62
  63 static const struct ieee80211_channel rtl818x_channels[] = {
  64         { .center_freq = 2412 },
  65         { .center_freq = 2417 },
  66         { .center_freq = 2422 },
  67         { .center_freq = 2427 },
  68         { .center_freq = 2432 },
  69         { .center_freq = 2437 },
  70         { .center_freq = 2442 },
  71         { .center_freq = 2447 },
  72         { .center_freq = 2452 },
  73         { .center_freq = 2457 },
  74         { .center_freq = 2462 },
  75         { .center_freq = 2467 },
  76         { .center_freq = 2472 },
  77         { .center_freq = 2484 },
  78 };
  79
  80 static void rtl8187_iowrite_async_cb(struct urb *urb)
  81 {
  82         kfree(urb->context);
  83         usb_free_urb(urb);
  84 }
  85
  86 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
  87                                   void *data, u16 len)
  88 {
  89         struct usb_ctrlrequest *dr;
  90         struct urb *urb;
  91         struct rtl8187_async_write_data {
  92                 u8 data[4];
  93                 struct usb_ctrlrequest dr;
  94         } *buf;
  95
  96         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
  97         if (!buf)
  98                 return;
  99
 100         urb = usb_alloc_urb(0, GFP_ATOMIC);
 101         if (!urb) {
 102                 kfree(buf);
 103                 return;
 104         }
 105
 106         dr = &buf->dr;
 107
 108         dr->bRequestType = RTL8187_REQT_WRITE;
 109         dr->bRequest = RTL8187_REQ_SET_REG;
 110         dr->wValue = addr;
 111         dr->wIndex = 0;
 112         dr->wLength = cpu_to_le16(len);
 113
 114         memcpy(buf, data, len);
 115
 116         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
 117                              (unsigned char *)dr, buf, len,
 118                              rtl8187_iowrite_async_cb, buf);
 119         usb_submit_urb(urb, GFP_ATOMIC);
 120 }
 121
 122 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
 123                                            __le32 *addr, u32 val)
 124 {
 125         __le32 buf = cpu_to_le32(val);
 126
 127         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
 128                               &buf, sizeof(buf));
 129 }
 130
 131 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
 132 {
 133         struct rtl8187_priv *priv = dev->priv;
 134
 135         data <<= 8;
 136         data |= addr | 0x80;
 137
 138         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
 139         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
 140         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
 141         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
 142
 143         msleep(1);
 144 }
 145
 146 static void rtl8187_tx_cb(struct urb *urb)
 147 {
 148         struct sk_buff *skb = (struct sk_buff *)urb->context;
 149         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 150         struct ieee80211_hw *hw = info->driver_data[0];
 151
 152         usb_free_urb(info->driver_data[1]);
 153         skb_pull(skb, sizeof(struct rtl8187_tx_hdr));
 154         memset(&info->status, 0, sizeof(info->status));
 155         info->flags |= IEEE80211_TX_STAT_ACK;
 156         ieee80211_tx_status_irqsafe(hw, skb);
 157 }
 158
 159 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 160 {
 161         struct rtl8187_priv *priv = dev->priv;
 162         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 163         struct rtl8187_tx_hdr *hdr;
 164         struct urb *urb;
 165         __le16 rts_dur = 0;
 166         u32 flags;
 167
 168         urb = usb_alloc_urb(0, GFP_ATOMIC);
 169         if (!urb) {
 170                 kfree_skb(skb);
 171                 return 0;
 172         }
 173
 174         flags = skb->len;
 175         flags |= RTL8187_TX_FLAG_NO_ENCRYPT;
 176
 177         flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
 178         if (ieee80211_get_morefrag((struct ieee80211_hdr *)skb->data))
 179                 flags |= RTL8187_TX_FLAG_MORE_FRAG;
 180         if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
 181                 flags |= RTL8187_TX_FLAG_RTS;
 182                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 183                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 184                                                  skb->len, info);
 185         } else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
 186                 flags |= RTL8187_TX_FLAG_CTS;
 187                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 188         }
 189
 190         hdr = (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 191         hdr->flags = cpu_to_le32(flags);
 192         hdr->len = 0;
 193         hdr->rts_duration = rts_dur;
 194         hdr->retry = cpu_to_le32(info->control.retry_limit << 8);
 195
 196         info->driver_data[0] = dev;
 197         info->driver_data[1] = urb;
 198         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, 2),
 199                           hdr, skb->len, rtl8187_tx_cb, skb);
 200         usb_submit_urb(urb, GFP_ATOMIC);
 201
 202         return 0;
 203 }
 204
 205 static void rtl8187_rx_cb(struct urb *urb)
 206 {
 207         struct sk_buff *skb = (struct sk_buff *)urb->context;
 208         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 209         struct ieee80211_hw *dev = info->dev;
 210         struct rtl8187_priv *priv = dev->priv;
 211         struct rtl8187_rx_hdr *hdr;
 212         struct ieee80211_rx_status rx_status = { 0 };
 213         int rate, signal;
 214         u32 flags;
 215
 216         spin_lock(&priv->rx_queue.lock);
 217         if (skb->next)
 218                 __skb_unlink(skb, &priv->rx_queue);
 219         else {
 220                 spin_unlock(&priv->rx_queue.lock);
 221                 return;
 222         }
 223         spin_unlock(&priv->rx_queue.lock);
 224
 225         if (unlikely(urb->status)) {
 226                 usb_free_urb(urb);
 227                 dev_kfree_skb_irq(skb);
 228                 return;
 229         }
 230
 231         skb_put(skb, urb->actual_length);
 232         hdr = (struct rtl8187_rx_hdr *)(skb_tail_pointer(skb) - sizeof(*hdr));
 233         flags = le32_to_cpu(hdr->flags);
 234         skb_trim(skb, flags & 0x0FFF);
 235
 236         signal = hdr->agc >> 1;
 237         rate = (flags >> 20) & 0xF;
 238         if (rate > 3) { /* OFDM rate */
 239                 if (signal > 90)
 240                         signal = 90;
 241                 else if (signal < 25)
 242                         signal = 25;
 243                 signal = 90 - signal;
 244         } else {        /* CCK rate */
 245                 if (signal > 95)
 246                         signal = 95;
 247                 else if (signal < 30)
 248                         signal = 30;
 249                 signal = 95 - signal;
 250         }
 251
 252         rx_status.antenna = (hdr->signal >> 7) & 1;
 253         rx_status.qual = 64 - min(hdr->noise, (u8)64);
 254         rx_status.signal = signal;
 255         rx_status.rate_idx = rate;
 256         rx_status.freq = dev->conf.channel->center_freq;
 257         rx_status.band = dev->conf.channel->band;
 258         rx_status.mactime = le64_to_cpu(hdr->mac_time);
 259         rx_status.flag |= RX_FLAG_TSFT;
 260         if (flags & (1 << 13))
 261                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 262         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 263
 264         skb = dev_alloc_skb(RTL8187_MAX_RX);
 265         if (unlikely(!skb)) {
 266                 usb_free_urb(urb);
 267                 /* TODO check rx queue length and refill *somewhere* */
 268                 return;
 269         }
 270
 271         info = (struct rtl8187_rx_info *)skb->cb;
 272         info->urb = urb;
 273         info->dev = dev;
 274         urb->transfer_buffer = skb_tail_pointer(skb);
 275         urb->context = skb;
 276         skb_queue_tail(&priv->rx_queue, skb);
 277
 278         usb_submit_urb(urb, GFP_ATOMIC);
 279 }
 280
 281 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 282 {
 283         struct rtl8187_priv *priv = dev->priv;
 284         struct urb *entry;
 285         struct sk_buff *skb;
 286         struct rtl8187_rx_info *info;
 287
 288         while (skb_queue_len(&priv->rx_queue) < 8) {
 289                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 290                 if (!skb)
 291                         break;
 292                 entry = usb_alloc_urb(0, GFP_KERNEL);
 293                 if (!entry) {
 294                         kfree_skb(skb);
 295                         break;
 296                 }
 297                 usb_fill_bulk_urb(entry, priv->udev,
 298                                   usb_rcvbulkpipe(priv->udev, 1),
 299                                   skb_tail_pointer(skb),
 300                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 301                 info = (struct rtl8187_rx_info *)skb->cb;
 302                 info->urb = entry;
 303                 info->dev = dev;
 304                 skb_queue_tail(&priv->rx_queue, skb);
 305                 usb_submit_urb(entry, GFP_KERNEL);
 306         }
 307
 308         return 0;
 309 }
 310
 311 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 312 {
 313         struct rtl8187_priv *priv = dev->priv;
 314         u8 reg;
 315         int i;
 316
 317         /* reset */
 318         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 319         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 320         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 321         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 322         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 323         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 324         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 325
 326         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 327
 328         msleep(200);
 329         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 330         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 331         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 332         msleep(200);
 333
 334         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 335         reg &= (1 << 1);
 336         reg |= RTL818X_CMD_RESET;
 337         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 338
 339         i = 10;
 340         do {
 341                 msleep(2);
 342                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 343                       RTL818X_CMD_RESET))
 344                         break;
 345         } while (--i);
 346
 347         if (!i) {
 348                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 349                 return -ETIMEDOUT;
 350         }
 351
 352         /* reload registers from eeprom */
 353         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 354
 355         i = 10;
 356         do {
 357                 msleep(4);
 358                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 359                       RTL818X_EEPROM_CMD_CONFIG))
 360                         break;
 361         } while (--i);
 362
 363         if (!i) {
 364                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 365                        wiphy_name(dev->wiphy));
 366                 return -ETIMEDOUT;
 367         }
 368
 369         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 370         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 371         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 372         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 373         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 374         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 375         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 376
 377         /* setup card */
 378         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 379         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 380
 381         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 382         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 383         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 384
 385         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 386
 387         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 388         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 389         reg &= 0x3F;
 390         reg |= 0x80;
 391         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 392
 393         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 394
 395         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 396         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 397         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 398
 399         // TODO: set RESP_RATE and BRSR properly
 400         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 401         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 402
 403         /* host_usb_init */
 404         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 405         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 406         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 407         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 408         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 409         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 410         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 411         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 412         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 413         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 414         msleep(100);
 415
 416         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 417         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 418         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 419         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 420         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 421         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 422         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 423         msleep(100);
 424
 425         priv->rf->init(dev);
 426
 427         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 428         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 429         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 430         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 431         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 432         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 433         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 434
 435         return 0;
 436 }
 437
 438 static int rtl8187_start(struct ieee80211_hw *dev)
 439 {
 440         struct rtl8187_priv *priv = dev->priv;
 441         u32 reg;
 442         int ret;
 443
 444         ret = rtl8187_init_hw(dev);
 445         if (ret)
 446                 return ret;
 447
 448         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 449
 450         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 451         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 452
 453         rtl8187_init_urbs(dev);
 454
 455         reg = RTL818X_RX_CONF_ONLYERLPKT |
 456               RTL818X_RX_CONF_RX_AUTORESETPHY |
 457               RTL818X_RX_CONF_BSSID |
 458               RTL818X_RX_CONF_MGMT |
 459               RTL818X_RX_CONF_DATA |
 460               (7 << 13 /* RX FIFO threshold NONE */) |
 461               (7 << 10 /* MAX RX DMA */) |
 462               RTL818X_RX_CONF_BROADCAST |
 463               RTL818X_RX_CONF_NICMAC;
 464
 465         priv->rx_conf = reg;
 466         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 467
 468         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 469         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 470         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 471         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 472
 473         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 474         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 475         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 476         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 477         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 478
 479         reg  = RTL818X_TX_CONF_CW_MIN |
 480                (7 << 21 /* MAX TX DMA */) |
 481                RTL818X_TX_CONF_NO_ICV;
 482         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 483
 484         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 485         reg |= RTL818X_CMD_TX_ENABLE;
 486         reg |= RTL818X_CMD_RX_ENABLE;
 487         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 488
 489         return 0;
 490 }
 491
 492 static void rtl8187_stop(struct ieee80211_hw *dev)
 493 {
 494         struct rtl8187_priv *priv = dev->priv;
 495         struct rtl8187_rx_info *info;
 496         struct sk_buff *skb;
 497         u32 reg;
 498
 499         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 500
 501         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 502         reg &= ~RTL818X_CMD_TX_ENABLE;
 503         reg &= ~RTL818X_CMD_RX_ENABLE;
 504         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 505
 506         priv->rf->stop(dev);
 507
 508         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 509         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 510         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 511         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 512
 513         while ((skb = skb_dequeue(&priv->rx_queue))) {
 514                 info = (struct rtl8187_rx_info *)skb->cb;
 515                 usb_kill_urb(info->urb);
 516                 kfree_skb(skb);
 517         }
 518         return;
 519 }
 520
 521 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 522                                  struct ieee80211_if_init_conf *conf)
 523 {
 524         struct rtl8187_priv *priv = dev->priv;
 525         int i;
 526
 527         if (priv->mode != IEEE80211_IF_TYPE_MNTR)
 528                 return -EOPNOTSUPP;
 529
 530         switch (conf->type) {
 531         case IEEE80211_IF_TYPE_STA:
 532                 priv->mode = conf->type;
 533                 break;
 534         default:
 535                 return -EOPNOTSUPP;
 536         }
 537
 538         priv->vif = conf->vif;
 539
 540         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 541         for (i = 0; i < ETH_ALEN; i++)
 542                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
 543                                  ((u8 *)conf->mac_addr)[i]);
 544         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 545
 546         return 0;
 547 }
 548
 549 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
 550                                      struct ieee80211_if_init_conf *conf)
 551 {
 552         struct rtl8187_priv *priv = dev->priv;
 553         priv->mode = IEEE80211_IF_TYPE_MNTR;
 554         priv->vif = NULL;
 555 }
 556
 557 static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 558 {
 559         struct rtl8187_priv *priv = dev->priv;
 560         u32 reg;
 561
 562         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 563         /* Enable TX loopback on MAC level to avoid TX during channel
 564          * changes, as this has be seen to causes problems and the
 565          * card will stop work until next reset
 566          */
 567         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 568                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
 569         msleep(10);
 570         priv->rf->set_chan(dev, conf);
 571         msleep(10);
 572         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 573
 574         rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
 575
 576         if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
 577                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
 578                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
 579                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
 580                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0x73);
 581         } else {
 582                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
 583                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
 584                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
 585                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0xa5);
 586         }
 587
 588         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 589         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
 590         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 591         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
 592         return 0;
 593 }
 594
 595 static int rtl8187_config_interface(struct ieee80211_hw *dev,
 596                                     struct ieee80211_vif *vif,
 597                                     struct ieee80211_if_conf *conf)
 598 {
 599         struct rtl8187_priv *priv = dev->priv;
 600         int i;
 601
 602         for (i = 0; i < ETH_ALEN; i++)
 603                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 604
 605         if (is_valid_ether_addr(conf->bssid))
 606                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 607         else
 608                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 609
 610         return 0;
 611 }
 612
 613 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
 614                                      unsigned int changed_flags,
 615                                      unsigned int *total_flags,
 616                                      int mc_count, struct dev_addr_list *mclist)
 617 {
 618         struct rtl8187_priv *priv = dev->priv;
 619
 620         if (changed_flags & FIF_FCSFAIL)
 621                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
 622         if (changed_flags & FIF_CONTROL)
 623                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
 624         if (changed_flags & FIF_OTHER_BSS)
 625                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
 626         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
 627                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
 628         else
 629                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
 630
 631         *total_flags = 0;
 632
 633         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
 634                 *total_flags |= FIF_FCSFAIL;
 635         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
 636                 *total_flags |= FIF_CONTROL;
 637         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
 638                 *total_flags |= FIF_OTHER_BSS;
 639         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
 640                 *total_flags |= FIF_ALLMULTI;
 641
 642         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
 643 }
 644
 645 static const struct ieee80211_ops rtl8187_ops = {
 646         .tx                     = rtl8187_tx,
 647         .start                  = rtl8187_start,
 648         .stop                   = rtl8187_stop,
 649         .add_interface          = rtl8187_add_interface,
 650         .remove_interface       = rtl8187_remove_interface,
 651         .config                 = rtl8187_config,
 652         .config_interface       = rtl8187_config_interface,
 653         .configure_filter       = rtl8187_configure_filter,
 654 };
 655
 656 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
 657 {
 658         struct ieee80211_hw *dev = eeprom->data;
 659         struct rtl8187_priv *priv = dev->priv;
 660         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 661
 662         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
 663         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
 664         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
 665         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
 666 }
 667
 668 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
 669 {
 670         struct ieee80211_hw *dev = eeprom->data;
 671         struct rtl8187_priv *priv = dev->priv;
 672         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
 673
 674         if (eeprom->reg_data_in)
 675                 reg |= RTL818X_EEPROM_CMD_WRITE;
 676         if (eeprom->reg_data_out)
 677                 reg |= RTL818X_EEPROM_CMD_READ;
 678         if (eeprom->reg_data_clock)
 679                 reg |= RTL818X_EEPROM_CMD_CK;
 680         if (eeprom->reg_chip_select)
 681                 reg |= RTL818X_EEPROM_CMD_CS;
 682
 683         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
 684         udelay(10);
 685 }
 686
 687 static int __devinit rtl8187_probe(struct usb_interface *intf,
 688                                    const struct usb_device_id *id)
 689 {
 690         struct usb_device *udev = interface_to_usbdev(intf);
 691         struct ieee80211_hw *dev;
 692         struct rtl8187_priv *priv;
 693         struct eeprom_93cx6 eeprom;
 694         struct ieee80211_channel *channel;
 695         u16 txpwr, reg;
 696         int err, i;
 697         DECLARE_MAC_BUF(mac);
 698
 699         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
 700         if (!dev) {
 701                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
 702                 return -ENOMEM;
 703         }
 704
 705         priv = dev->priv;
 706
 707         SET_IEEE80211_DEV(dev, &intf->dev);
 708         usb_set_intfdata(intf, dev);
 709         priv->udev = udev;
 710
 711         usb_get_dev(udev);
 712
 713         skb_queue_head_init(&priv->rx_queue);
 714
 715         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
 716         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
 717
 718         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 719         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 720         priv->map = (struct rtl818x_csr *)0xFF00;
 721
 722         priv->band.band = IEEE80211_BAND_2GHZ;
 723         priv->band.channels = priv->channels;
 724         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
 725         priv->band.bitrates = priv->rates;
 726         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
 727         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
 728
 729
 730         priv->mode = IEEE80211_IF_TYPE_MNTR;
 731         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 732                      IEEE80211_HW_RX_INCLUDES_FCS |
 733                      IEEE80211_HW_SIGNAL_UNSPEC;
 734         dev->extra_tx_headroom = sizeof(struct rtl8187_tx_hdr);
 735         dev->queues = 1;
 736         dev->max_signal = 65;
 737
 738         eeprom.data = dev;
 739         eeprom.register_read = rtl8187_eeprom_register_read;
 740         eeprom.register_write = rtl8187_eeprom_register_write;
 741         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
 742                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 743         else
 744                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 745
 746         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 747         udelay(10);
 748
 749         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
 750                                (__le16 __force *)dev->wiphy->perm_addr, 3);
 751         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 752                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
 753                        "generated MAC address\n");
 754                 random_ether_addr(dev->wiphy->perm_addr);
 755         }
 756
 757         channel = priv->channels;
 758         for (i = 0; i < 3; i++) {
 759                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
 760                                   &txpwr);
 761                 (*channel++).hw_value = txpwr & 0xFF;
 762                 (*channel++).hw_value = txpwr >> 8;
 763         }
 764         for (i = 0; i < 2; i++) {
 765                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
 766                                   &txpwr);
 767                 (*channel++).hw_value = txpwr & 0xFF;
 768                 (*channel++).hw_value = txpwr >> 8;
 769         }
 770         for (i = 0; i < 2; i++) {
 771                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6 + i,
 772                                   &txpwr);
 773                 (*channel++).hw_value = txpwr & 0xFF;
 774                 (*channel++).hw_value = txpwr >> 8;
 775         }
 776
 777         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
 778                           &priv->txpwr_base);
 779
 780         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 781         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 782         /* 0 means asic B-cut, we should use SW 3 wire
 783          * bit-by-bit banging for radio. 1 means we can use
 784          * USB specific request to write radio registers */
 785         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
 786         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 787         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 788
 789         priv->rf = rtl8187_detect_rf(dev);
 790
 791         err = ieee80211_register_hw(dev);
 792         if (err) {
 793                 printk(KERN_ERR "rtl8187: Cannot register device\n");
 794                 goto err_free_dev;
 795         }
 796
 797         printk(KERN_INFO "%s: hwaddr %s, rtl8187 V%d + %s\n",
 798                wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
 799                priv->asic_rev, priv->rf->name);
 800
 801         return 0;
 802
 803  err_free_dev:
 804         ieee80211_free_hw(dev);
 805         usb_set_intfdata(intf, NULL);
 806         usb_put_dev(udev);
 807         return err;
 808 }
 809
 810 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
 811 {
 812         struct ieee80211_hw *dev = usb_get_intfdata(intf);
 813         struct rtl8187_priv *priv;
 814
 815         if (!dev)
 816                 return;
 817
 818         ieee80211_unregister_hw(dev);
 819
 820         priv = dev->priv;
 821         usb_put_dev(interface_to_usbdev(intf));
 822         ieee80211_free_hw(dev);
 823 }
 824
 825 static struct usb_driver rtl8187_driver = {
 826         .name           = KBUILD_MODNAME,
 827         .id_table       = rtl8187_table,
 828         .probe          = rtl8187_probe,
 829         .disconnect     = rtl8187_disconnect,
 830 };
 831
 832 static int __init rtl8187_init(void)
 833 {
 834         return usb_register(&rtl8187_driver);
 835 }
 836
 837 static void __exit rtl8187_exit(void)
 838 {
 839         usb_deregister(&rtl8187_driver);
 840 }
 841
 842 module_init(rtl8187_init);
 843 module_exit(rtl8187_exit);