SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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         int rc;
  96
  97         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
  98         if (!buf)
  99                 return;
 100
 101         urb = usb_alloc_urb(0, GFP_ATOMIC);
 102         if (!urb) {
 103                 kfree(buf);
 104                 return;
 105         }
 106
 107         dr = &buf->dr;
 108
 109         dr->bRequestType = RTL8187_REQT_WRITE;
 110         dr->bRequest = RTL8187_REQ_SET_REG;
 111         dr->wValue = addr;
 112         dr->wIndex = 0;
 113         dr->wLength = cpu_to_le16(len);
 114
 115         memcpy(buf, data, len);
 116
 117         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
 118                              (unsigned char *)dr, buf, len,
 119                              rtl8187_iowrite_async_cb, buf);
 120         rc = usb_submit_urb(urb, GFP_ATOMIC);
 121         if (rc < 0) {
 122                 kfree(buf);
 123                 usb_free_urb(urb);
 124         }
 125 }
 126
 127 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
 128                                            __le32 *addr, u32 val)
 129 {
 130         __le32 buf = cpu_to_le32(val);
 131
 132         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
 133                               &buf, sizeof(buf));
 134 }
 135
 136 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
 137 {
 138         struct rtl8187_priv *priv = dev->priv;
 139
 140         data <<= 8;
 141         data |= addr | 0x80;
 142
 143         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
 144         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
 145         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
 146         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
 147
 148         msleep(1);
 149 }
 150
 151 static void rtl8187_tx_cb(struct urb *urb)
 152 {
 153         struct sk_buff *skb = (struct sk_buff *)urb->context;
 154         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 155         struct ieee80211_hw *hw = info->driver_data[0];
 156
 157         usb_free_urb(info->driver_data[1]);
 158         skb_pull(skb, sizeof(struct rtl8187_tx_hdr));
 159         memset(&info->status, 0, sizeof(info->status));
 160         info->flags |= IEEE80211_TX_STAT_ACK;
 161         ieee80211_tx_status_irqsafe(hw, skb);
 162 }
 163
 164 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 165 {
 166         struct rtl8187_priv *priv = dev->priv;
 167         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 168         struct rtl8187_tx_hdr *hdr;
 169         struct urb *urb;
 170         __le16 rts_dur = 0;
 171         u32 flags;
 172         int rc;
 173
 174         urb = usb_alloc_urb(0, GFP_ATOMIC);
 175         if (!urb) {
 176                 kfree_skb(skb);
 177                 return 0;
 178         }
 179
 180         flags = skb->len;
 181         flags |= RTL8187_TX_FLAG_NO_ENCRYPT;
 182
 183         flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
 184         if (ieee80211_has_morefrags(((struct ieee80211_hdr *)skb->data)->frame_control))
 185                 flags |= RTL8187_TX_FLAG_MORE_FRAG;
 186         if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
 187                 flags |= RTL8187_TX_FLAG_RTS;
 188                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 189                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 190                                                  skb->len, info);
 191         } else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
 192                 flags |= RTL8187_TX_FLAG_CTS;
 193                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 194         }
 195
 196         hdr = (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 197         hdr->flags = cpu_to_le32(flags);
 198         hdr->len = 0;
 199         hdr->rts_duration = rts_dur;
 200         hdr->retry = cpu_to_le32(info->control.retry_limit << 8);
 201
 202         info->driver_data[0] = dev;
 203         info->driver_data[1] = urb;
 204         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, 2),
 205                           hdr, skb->len, rtl8187_tx_cb, skb);
 206         rc = usb_submit_urb(urb, GFP_ATOMIC);
 207         if (rc < 0) {
 208                 usb_free_urb(urb);
 209                 kfree_skb(skb);
 210         }
 211
 212         return 0;
 213 }
 214
 215 static void rtl8187_rx_cb(struct urb *urb)
 216 {
 217         struct sk_buff *skb = (struct sk_buff *)urb->context;
 218         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 219         struct ieee80211_hw *dev = info->dev;
 220         struct rtl8187_priv *priv = dev->priv;
 221         struct rtl8187_rx_hdr *hdr;
 222         struct ieee80211_rx_status rx_status = { 0 };
 223         int rate, signal;
 224         u32 flags;
 225
 226         spin_lock(&priv->rx_queue.lock);
 227         if (skb->next)
 228                 __skb_unlink(skb, &priv->rx_queue);
 229         else {
 230                 spin_unlock(&priv->rx_queue.lock);
 231                 return;
 232         }
 233         spin_unlock(&priv->rx_queue.lock);
 234
 235         if (unlikely(urb->status)) {
 236                 usb_free_urb(urb);
 237                 dev_kfree_skb_irq(skb);
 238                 return;
 239         }
 240
 241         skb_put(skb, urb->actual_length);
 242         hdr = (struct rtl8187_rx_hdr *)(skb_tail_pointer(skb) - sizeof(*hdr));
 243         flags = le32_to_cpu(hdr->flags);
 244         skb_trim(skb, flags & 0x0FFF);
 245
 246         signal = hdr->agc >> 1;
 247         rate = (flags >> 20) & 0xF;
 248         if (rate > 3) { /* OFDM rate */
 249                 if (signal > 90)
 250                         signal = 90;
 251                 else if (signal < 25)
 252                         signal = 25;
 253                 signal = 90 - signal;
 254         } else {        /* CCK rate */
 255                 if (signal > 95)
 256                         signal = 95;
 257                 else if (signal < 30)
 258                         signal = 30;
 259                 signal = 95 - signal;
 260         }
 261
 262         rx_status.antenna = (hdr->signal >> 7) & 1;
 263         rx_status.qual = 64 - min(hdr->noise, (u8)64);
 264         rx_status.signal = signal;
 265         rx_status.rate_idx = rate;
 266         rx_status.freq = dev->conf.channel->center_freq;
 267         rx_status.band = dev->conf.channel->band;
 268         rx_status.mactime = le64_to_cpu(hdr->mac_time);
 269         rx_status.flag |= RX_FLAG_TSFT;
 270         if (flags & (1 << 13))
 271                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 272         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 273
 274         skb = dev_alloc_skb(RTL8187_MAX_RX);
 275         if (unlikely(!skb)) {
 276                 usb_free_urb(urb);
 277                 /* TODO check rx queue length and refill *somewhere* */
 278                 return;
 279         }
 280
 281         info = (struct rtl8187_rx_info *)skb->cb;
 282         info->urb = urb;
 283         info->dev = dev;
 284         urb->transfer_buffer = skb_tail_pointer(skb);
 285         urb->context = skb;
 286         skb_queue_tail(&priv->rx_queue, skb);
 287
 288         usb_submit_urb(urb, GFP_ATOMIC);
 289 }
 290
 291 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 292 {
 293         struct rtl8187_priv *priv = dev->priv;
 294         struct urb *entry;
 295         struct sk_buff *skb;
 296         struct rtl8187_rx_info *info;
 297
 298         while (skb_queue_len(&priv->rx_queue) < 8) {
 299                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 300                 if (!skb)
 301                         break;
 302                 entry = usb_alloc_urb(0, GFP_KERNEL);
 303                 if (!entry) {
 304                         kfree_skb(skb);
 305                         break;
 306                 }
 307                 usb_fill_bulk_urb(entry, priv->udev,
 308                                   usb_rcvbulkpipe(priv->udev, 1),
 309                                   skb_tail_pointer(skb),
 310                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 311                 info = (struct rtl8187_rx_info *)skb->cb;
 312                 info->urb = entry;
 313                 info->dev = dev;
 314                 skb_queue_tail(&priv->rx_queue, skb);
 315                 usb_submit_urb(entry, GFP_KERNEL);
 316         }
 317
 318         return 0;
 319 }
 320
 321 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 322 {
 323         struct rtl8187_priv *priv = dev->priv;
 324         u8 reg;
 325         int i;
 326
 327         /* reset */
 328         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 329         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 330         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 331         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 332         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 333         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 334         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 335
 336         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 337
 338         msleep(200);
 339         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 340         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 341         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 342         msleep(200);
 343
 344         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 345         reg &= (1 << 1);
 346         reg |= RTL818X_CMD_RESET;
 347         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 348
 349         i = 10;
 350         do {
 351                 msleep(2);
 352                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 353                       RTL818X_CMD_RESET))
 354                         break;
 355         } while (--i);
 356
 357         if (!i) {
 358                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 359                 return -ETIMEDOUT;
 360         }
 361
 362         /* reload registers from eeprom */
 363         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 364
 365         i = 10;
 366         do {
 367                 msleep(4);
 368                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 369                       RTL818X_EEPROM_CMD_CONFIG))
 370                         break;
 371         } while (--i);
 372
 373         if (!i) {
 374                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 375                        wiphy_name(dev->wiphy));
 376                 return -ETIMEDOUT;
 377         }
 378
 379         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 380         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 381         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 382         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 383         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 384         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 385         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 386
 387         /* setup card */
 388         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 389         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 390
 391         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 392         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 393         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 394
 395         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 396
 397         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 398         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 399         reg &= 0x3F;
 400         reg |= 0x80;
 401         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 402
 403         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 404
 405         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 406         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 407         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 408
 409         // TODO: set RESP_RATE and BRSR properly
 410         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 411         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 412
 413         /* host_usb_init */
 414         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 415         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 416         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 417         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 418         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 419         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 420         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 421         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 422         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 423         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 424         msleep(100);
 425
 426         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 427         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 428         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 429         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 430         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 431         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 432         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 433         msleep(100);
 434
 435         priv->rf->init(dev);
 436
 437         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 438         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 439         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 440         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 441         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 442         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 443         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 444
 445         return 0;
 446 }
 447
 448 static int rtl8187_start(struct ieee80211_hw *dev)
 449 {
 450         struct rtl8187_priv *priv = dev->priv;
 451         u32 reg;
 452         int ret;
 453
 454         ret = rtl8187_init_hw(dev);
 455         if (ret)
 456                 return ret;
 457
 458         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 459
 460         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 461         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 462
 463         rtl8187_init_urbs(dev);
 464
 465         reg = RTL818X_RX_CONF_ONLYERLPKT |
 466               RTL818X_RX_CONF_RX_AUTORESETPHY |
 467               RTL818X_RX_CONF_BSSID |
 468               RTL818X_RX_CONF_MGMT |
 469               RTL818X_RX_CONF_DATA |
 470               (7 << 13 /* RX FIFO threshold NONE */) |
 471               (7 << 10 /* MAX RX DMA */) |
 472               RTL818X_RX_CONF_BROADCAST |
 473               RTL818X_RX_CONF_NICMAC;
 474
 475         priv->rx_conf = reg;
 476         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 477
 478         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 479         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 480         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 481         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 482
 483         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 484         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 485         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 486         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 487         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 488
 489         reg  = RTL818X_TX_CONF_CW_MIN |
 490                (7 << 21 /* MAX TX DMA */) |
 491                RTL818X_TX_CONF_NO_ICV;
 492         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 493
 494         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 495         reg |= RTL818X_CMD_TX_ENABLE;
 496         reg |= RTL818X_CMD_RX_ENABLE;
 497         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 498
 499         return 0;
 500 }
 501
 502 static void rtl8187_stop(struct ieee80211_hw *dev)
 503 {
 504         struct rtl8187_priv *priv = dev->priv;
 505         struct rtl8187_rx_info *info;
 506         struct sk_buff *skb;
 507         u32 reg;
 508
 509         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 510
 511         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 512         reg &= ~RTL818X_CMD_TX_ENABLE;
 513         reg &= ~RTL818X_CMD_RX_ENABLE;
 514         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 515
 516         priv->rf->stop(dev);
 517
 518         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 519         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 520         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 521         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 522
 523         while ((skb = skb_dequeue(&priv->rx_queue))) {
 524                 info = (struct rtl8187_rx_info *)skb->cb;
 525                 usb_kill_urb(info->urb);
 526                 kfree_skb(skb);
 527         }
 528         return;
 529 }
 530
 531 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 532                                  struct ieee80211_if_init_conf *conf)
 533 {
 534         struct rtl8187_priv *priv = dev->priv;
 535         int i;
 536
 537         if (priv->mode != IEEE80211_IF_TYPE_MNTR)
 538                 return -EOPNOTSUPP;
 539
 540         switch (conf->type) {
 541         case IEEE80211_IF_TYPE_STA:
 542                 priv->mode = conf->type;
 543                 break;
 544         default:
 545                 return -EOPNOTSUPP;
 546         }
 547
 548         priv->vif = conf->vif;
 549
 550         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 551         for (i = 0; i < ETH_ALEN; i++)
 552                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
 553                                  ((u8 *)conf->mac_addr)[i]);
 554         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 555
 556         return 0;
 557 }
 558
 559 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
 560                                      struct ieee80211_if_init_conf *conf)
 561 {
 562         struct rtl8187_priv *priv = dev->priv;
 563         priv->mode = IEEE80211_IF_TYPE_MNTR;
 564         priv->vif = NULL;
 565 }
 566
 567 static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 568 {
 569         struct rtl8187_priv *priv = dev->priv;
 570         u32 reg;
 571
 572         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 573         /* Enable TX loopback on MAC level to avoid TX during channel
 574          * changes, as this has be seen to causes problems and the
 575          * card will stop work until next reset
 576          */
 577         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 578                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
 579         msleep(10);
 580         priv->rf->set_chan(dev, conf);
 581         msleep(10);
 582         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 583
 584         rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
 585
 586         if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
 587                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
 588                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
 589                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
 590                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0x73);
 591         } else {
 592                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
 593                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
 594                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
 595                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0xa5);
 596         }
 597
 598         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 599         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
 600         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 601         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
 602         return 0;
 603 }
 604
 605 static int rtl8187_config_interface(struct ieee80211_hw *dev,
 606                                     struct ieee80211_vif *vif,
 607                                     struct ieee80211_if_conf *conf)
 608 {
 609         struct rtl8187_priv *priv = dev->priv;
 610         int i;
 611
 612         for (i = 0; i < ETH_ALEN; i++)
 613                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 614
 615         if (is_valid_ether_addr(conf->bssid))
 616                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 617         else
 618                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 619
 620         return 0;
 621 }
 622
 623 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
 624                                      unsigned int changed_flags,
 625                                      unsigned int *total_flags,
 626                                      int mc_count, struct dev_addr_list *mclist)
 627 {
 628         struct rtl8187_priv *priv = dev->priv;
 629
 630         if (changed_flags & FIF_FCSFAIL)
 631                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
 632         if (changed_flags & FIF_CONTROL)
 633                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
 634         if (changed_flags & FIF_OTHER_BSS)
 635                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
 636         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
 637                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
 638         else
 639                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
 640
 641         *total_flags = 0;
 642
 643         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
 644                 *total_flags |= FIF_FCSFAIL;
 645         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
 646                 *total_flags |= FIF_CONTROL;
 647         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
 648                 *total_flags |= FIF_OTHER_BSS;
 649         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
 650                 *total_flags |= FIF_ALLMULTI;
 651
 652         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
 653 }
 654
 655 static const struct ieee80211_ops rtl8187_ops = {
 656         .tx                     = rtl8187_tx,
 657         .start                  = rtl8187_start,
 658         .stop                   = rtl8187_stop,
 659         .add_interface          = rtl8187_add_interface,
 660         .remove_interface       = rtl8187_remove_interface,
 661         .config                 = rtl8187_config,
 662         .config_interface       = rtl8187_config_interface,
 663         .configure_filter       = rtl8187_configure_filter,
 664 };
 665
 666 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
 667 {
 668         struct ieee80211_hw *dev = eeprom->data;
 669         struct rtl8187_priv *priv = dev->priv;
 670         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 671
 672         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
 673         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
 674         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
 675         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
 676 }
 677
 678 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
 679 {
 680         struct ieee80211_hw *dev = eeprom->data;
 681         struct rtl8187_priv *priv = dev->priv;
 682         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
 683
 684         if (eeprom->reg_data_in)
 685                 reg |= RTL818X_EEPROM_CMD_WRITE;
 686         if (eeprom->reg_data_out)
 687                 reg |= RTL818X_EEPROM_CMD_READ;
 688         if (eeprom->reg_data_clock)
 689                 reg |= RTL818X_EEPROM_CMD_CK;
 690         if (eeprom->reg_chip_select)
 691                 reg |= RTL818X_EEPROM_CMD_CS;
 692
 693         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
 694         udelay(10);
 695 }
 696
 697 static int __devinit rtl8187_probe(struct usb_interface *intf,
 698                                    const struct usb_device_id *id)
 699 {
 700         struct usb_device *udev = interface_to_usbdev(intf);
 701         struct ieee80211_hw *dev;
 702         struct rtl8187_priv *priv;
 703         struct eeprom_93cx6 eeprom;
 704         struct ieee80211_channel *channel;
 705         u16 txpwr, reg;
 706         int err, i;
 707         DECLARE_MAC_BUF(mac);
 708
 709         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
 710         if (!dev) {
 711                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
 712                 return -ENOMEM;
 713         }
 714
 715         priv = dev->priv;
 716
 717         SET_IEEE80211_DEV(dev, &intf->dev);
 718         usb_set_intfdata(intf, dev);
 719         priv->udev = udev;
 720
 721         usb_get_dev(udev);
 722
 723         skb_queue_head_init(&priv->rx_queue);
 724
 725         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
 726         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
 727
 728         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 729         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 730         priv->map = (struct rtl818x_csr *)0xFF00;
 731
 732         priv->band.band = IEEE80211_BAND_2GHZ;
 733         priv->band.channels = priv->channels;
 734         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
 735         priv->band.bitrates = priv->rates;
 736         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
 737         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
 738
 739
 740         priv->mode = IEEE80211_IF_TYPE_MNTR;
 741         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 742                      IEEE80211_HW_RX_INCLUDES_FCS |
 743                      IEEE80211_HW_SIGNAL_UNSPEC;
 744         dev->extra_tx_headroom = sizeof(struct rtl8187_tx_hdr);
 745         dev->queues = 1;
 746         dev->max_signal = 65;
 747
 748         eeprom.data = dev;
 749         eeprom.register_read = rtl8187_eeprom_register_read;
 750         eeprom.register_write = rtl8187_eeprom_register_write;
 751         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
 752                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 753         else
 754                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 755
 756         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 757         udelay(10);
 758
 759         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
 760                                (__le16 __force *)dev->wiphy->perm_addr, 3);
 761         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 762                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
 763                        "generated MAC address\n");
 764                 random_ether_addr(dev->wiphy->perm_addr);
 765         }
 766
 767         channel = priv->channels;
 768         for (i = 0; i < 3; i++) {
 769                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
 770                                   &txpwr);
 771                 (*channel++).hw_value = txpwr & 0xFF;
 772                 (*channel++).hw_value = txpwr >> 8;
 773         }
 774         for (i = 0; i < 2; i++) {
 775                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
 776                                   &txpwr);
 777                 (*channel++).hw_value = txpwr & 0xFF;
 778                 (*channel++).hw_value = txpwr >> 8;
 779         }
 780         for (i = 0; i < 2; i++) {
 781                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6 + i,
 782                                   &txpwr);
 783                 (*channel++).hw_value = txpwr & 0xFF;
 784                 (*channel++).hw_value = txpwr >> 8;
 785         }
 786
 787         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
 788                           &priv->txpwr_base);
 789
 790         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 791         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 792         /* 0 means asic B-cut, we should use SW 3 wire
 793          * bit-by-bit banging for radio. 1 means we can use
 794          * USB specific request to write radio registers */
 795         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
 796         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 797         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 798
 799         priv->rf = rtl8187_detect_rf(dev);
 800
 801         err = ieee80211_register_hw(dev);
 802         if (err) {
 803                 printk(KERN_ERR "rtl8187: Cannot register device\n");
 804                 goto err_free_dev;
 805         }
 806
 807         printk(KERN_INFO "%s: hwaddr %s, rtl8187 V%d + %s\n",
 808                wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
 809                priv->asic_rev, priv->rf->name);
 810
 811         return 0;
 812
 813  err_free_dev:
 814         ieee80211_free_hw(dev);
 815         usb_set_intfdata(intf, NULL);
 816         usb_put_dev(udev);
 817         return err;
 818 }
 819
 820 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
 821 {
 822         struct ieee80211_hw *dev = usb_get_intfdata(intf);
 823         struct rtl8187_priv *priv;
 824
 825         if (!dev)
 826                 return;
 827
 828         ieee80211_unregister_hw(dev);
 829
 830         priv = dev->priv;
 831         usb_put_dev(interface_to_usbdev(intf));
 832         ieee80211_free_hw(dev);
 833 }
 834
 835 static struct usb_driver rtl8187_driver = {
 836         .name           = KBUILD_MODNAME,
 837         .id_table       = rtl8187_table,
 838         .probe          = rtl8187_probe,
 839         .disconnect     = rtl8187_disconnect,
 840 };
 841
 842 static int __init rtl8187_init(void)
 843 {
 844         return usb_register(&rtl8187_driver);
 845 }
 846
 847 static void __exit rtl8187_exit(void)
 848 {
 849         usb_deregister(&rtl8187_driver);
 850 }
 851
 852 module_init(rtl8187_init);
 853 module_exit(rtl8187_exit);