git.oblomov.eu Git - 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 void rtl8187_iowrite_async_cb(struct urb *urb)
  49 {
  50         kfree(urb->context);
  51         usb_free_urb(urb);
  52 }
  53
  54 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
  55                                   void *data, u16 len)
  56 {
  57         struct usb_ctrlrequest *dr;
  58         struct urb *urb;
  59         struct rtl8187_async_write_data {
  60                 u8 data[4];
  61                 struct usb_ctrlrequest dr;
  62         } *buf;
  63
  64         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
  65         if (!buf)
  66                 return;
  67
  68         urb = usb_alloc_urb(0, GFP_ATOMIC);
  69         if (!urb) {
  70                 kfree(buf);
  71                 return;
  72         }
  73
  74         dr = &buf->dr;
  75
  76         dr->bRequestType = RTL8187_REQT_WRITE;
  77         dr->bRequest = RTL8187_REQ_SET_REG;
  78         dr->wValue = addr;
  79         dr->wIndex = 0;
  80         dr->wLength = cpu_to_le16(len);
  81
  82         memcpy(buf, data, len);
  83
  84         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
  85                              (unsigned char *)dr, buf, len,
  86                              rtl8187_iowrite_async_cb, buf);
  87         usb_submit_urb(urb, GFP_ATOMIC);
  88 }
  89
  90 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
  91                                            __le32 *addr, u32 val)
  92 {
  93         __le32 buf = cpu_to_le32(val);
  94
  95         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
  96                               &buf, sizeof(buf));
  97 }
  98
  99 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
 100 {
 101         struct rtl8187_priv *priv = dev->priv;
 102
 103         data <<= 8;
 104         data |= addr | 0x80;
 105
 106         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
 107         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
 108         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
 109         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
 110
 111         msleep(1);
 112 }
 113
 114 static void rtl8187_tx_cb(struct urb *urb)
 115 {
 116         struct ieee80211_tx_status status = { {0} };
 117         struct sk_buff *skb = (struct sk_buff *)urb->context;
 118         struct rtl8187_tx_info *info = (struct rtl8187_tx_info *)skb->cb;
 119
 120         usb_free_urb(info->urb);
 121         if (info->control)
 122                 memcpy(&status.control, info->control, sizeof(status.control));
 123         kfree(info->control);
 124         skb_pull(skb, sizeof(struct rtl8187_tx_hdr));
 125         status.flags |= IEEE80211_TX_STATUS_ACK;
 126         ieee80211_tx_status_irqsafe(info->dev, skb, &status);
 127 }
 128
 129 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
 130                       struct ieee80211_tx_control *control)
 131 {
 132         struct rtl8187_priv *priv = dev->priv;
 133         struct rtl8187_tx_hdr *hdr;
 134         struct rtl8187_tx_info *info;
 135         struct urb *urb;
 136         __le16 rts_dur = 0;
 137         u32 flags;
 138
 139         urb = usb_alloc_urb(0, GFP_ATOMIC);
 140         if (!urb) {
 141                 kfree_skb(skb);
 142                 return 0;
 143         }
 144
 145         flags = skb->len;
 146         flags |= RTL8187_TX_FLAG_NO_ENCRYPT;
 147         flags |= control->rts_cts_rate << 19;
 148         flags |= control->tx_rate << 24;
 149         if (ieee80211_get_morefrag((struct ieee80211_hdr *)skb->data))
 150                 flags |= RTL8187_TX_FLAG_MORE_FRAG;
 151         if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
 152                 flags |= RTL8187_TX_FLAG_RTS;
 153                 rts_dur = ieee80211_rts_duration(dev, priv->if_id, skb->len, control);
 154         }
 155         if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
 156                 flags |= RTL8187_TX_FLAG_CTS;
 157
 158         hdr = (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 159         hdr->flags = cpu_to_le32(flags);
 160         hdr->len = 0;
 161         hdr->rts_duration = rts_dur;
 162         hdr->retry = cpu_to_le32(control->retry_limit << 8);
 163
 164         info = (struct rtl8187_tx_info *)skb->cb;
 165         info->control = kmemdup(control, sizeof(*control), GFP_ATOMIC);
 166         info->urb = urb;
 167         info->dev = dev;
 168         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, 2),
 169                           hdr, skb->len, rtl8187_tx_cb, skb);
 170         usb_submit_urb(urb, GFP_ATOMIC);
 171
 172         return 0;
 173 }
 174
 175 static void rtl8187_rx_cb(struct urb *urb)
 176 {
 177         struct sk_buff *skb = (struct sk_buff *)urb->context;
 178         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 179         struct ieee80211_hw *dev = info->dev;
 180         struct rtl8187_priv *priv = dev->priv;
 181         struct rtl8187_rx_hdr *hdr;
 182         struct ieee80211_rx_status rx_status = { 0 };
 183         int rate, signal;
 184         u32 flags;
 185
 186         spin_lock(&priv->rx_queue.lock);
 187         if (skb->next)
 188                 __skb_unlink(skb, &priv->rx_queue);
 189         else {
 190                 spin_unlock(&priv->rx_queue.lock);
 191                 return;
 192         }
 193         spin_unlock(&priv->rx_queue.lock);
 194
 195         if (unlikely(urb->status)) {
 196                 usb_free_urb(urb);
 197                 dev_kfree_skb_irq(skb);
 198                 return;
 199         }
 200
 201         skb_put(skb, urb->actual_length);
 202         hdr = (struct rtl8187_rx_hdr *)(skb_tail_pointer(skb) - sizeof(*hdr));
 203         flags = le32_to_cpu(hdr->flags);
 204         skb_trim(skb, flags & 0x0FFF);
 205
 206         signal = hdr->agc >> 1;
 207         rate = (flags >> 20) & 0xF;
 208         if (rate > 3) { /* OFDM rate */
 209                 if (signal > 90)
 210                         signal = 90;
 211                 else if (signal < 25)
 212                         signal = 25;
 213                 signal = 90 - signal;
 214         } else {        /* CCK rate */
 215                 if (signal > 95)
 216                         signal = 95;
 217                 else if (signal < 30)
 218                         signal = 30;
 219                 signal = 95 - signal;
 220         }
 221
 222         rx_status.antenna = (hdr->signal >> 7) & 1;
 223         rx_status.signal = 64 - min(hdr->noise, (u8)64);
 224         rx_status.ssi = signal;
 225         rx_status.rate = rate;
 226         rx_status.freq = dev->conf.freq;
 227         rx_status.channel = dev->conf.channel;
 228         rx_status.phymode = dev->conf.phymode;
 229         rx_status.mactime = le64_to_cpu(hdr->mac_time);
 230         rx_status.flag |= RX_FLAG_TSFT;
 231         if (flags & (1 << 13))
 232                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 233         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 234
 235         skb = dev_alloc_skb(RTL8187_MAX_RX);
 236         if (unlikely(!skb)) {
 237                 usb_free_urb(urb);
 238                 /* TODO check rx queue length and refill *somewhere* */
 239                 return;
 240         }
 241
 242         info = (struct rtl8187_rx_info *)skb->cb;
 243         info->urb = urb;
 244         info->dev = dev;
 245         urb->transfer_buffer = skb_tail_pointer(skb);
 246         urb->context = skb;
 247         skb_queue_tail(&priv->rx_queue, skb);
 248
 249         usb_submit_urb(urb, GFP_ATOMIC);
 250 }
 251
 252 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 253 {
 254         struct rtl8187_priv *priv = dev->priv;
 255         struct urb *entry;
 256         struct sk_buff *skb;
 257         struct rtl8187_rx_info *info;
 258
 259         while (skb_queue_len(&priv->rx_queue) < 8) {
 260                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 261                 if (!skb)
 262                         break;
 263                 entry = usb_alloc_urb(0, GFP_KERNEL);
 264                 if (!entry) {
 265                         kfree_skb(skb);
 266                         break;
 267                 }
 268                 usb_fill_bulk_urb(entry, priv->udev,
 269                                   usb_rcvbulkpipe(priv->udev, 1),
 270                                   skb_tail_pointer(skb),
 271                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 272                 info = (struct rtl8187_rx_info *)skb->cb;
 273                 info->urb = entry;
 274                 info->dev = dev;
 275                 skb_queue_tail(&priv->rx_queue, skb);
 276                 usb_submit_urb(entry, GFP_KERNEL);
 277         }
 278
 279         return 0;
 280 }
 281
 282 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 283 {
 284         struct rtl8187_priv *priv = dev->priv;
 285         u8 reg;
 286         int i;
 287
 288         /* reset */
 289         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 290         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 291         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 292         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 293         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 294         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 295         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 296
 297         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 298
 299         msleep(200);
 300         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 301         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 302         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 303         msleep(200);
 304
 305         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 306         reg &= (1 << 1);
 307         reg |= RTL818X_CMD_RESET;
 308         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 309
 310         i = 10;
 311         do {
 312                 msleep(2);
 313                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 314                       RTL818X_CMD_RESET))
 315                         break;
 316         } while (--i);
 317
 318         if (!i) {
 319                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 320                 return -ETIMEDOUT;
 321         }
 322
 323         /* reload registers from eeprom */
 324         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 325
 326         i = 10;
 327         do {
 328                 msleep(4);
 329                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 330                       RTL818X_EEPROM_CMD_CONFIG))
 331                         break;
 332         } while (--i);
 333
 334         if (!i) {
 335                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 336                        wiphy_name(dev->wiphy));
 337                 return -ETIMEDOUT;
 338         }
 339
 340         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 341         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 342         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 343         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 344         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 345         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 346         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 347
 348         /* setup card */
 349         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 350         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 351
 352         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 353         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 354         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 355
 356         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 357
 358         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 359         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 360         reg &= 0x3F;
 361         reg |= 0x80;
 362         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 363
 364         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 365
 366         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 367         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 368         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 369
 370         // TODO: set RESP_RATE and BRSR properly
 371         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 372         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 373
 374         /* host_usb_init */
 375         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 376         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 377         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 378         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 379         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 380         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 381         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 382         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 383         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 384         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 385         msleep(100);
 386
 387         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 388         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 389         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 390         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 391         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 392         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 393         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 394         msleep(100);
 395
 396         priv->rf_init(dev);
 397
 398         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 399         reg = rtl818x_ioread16(priv, &priv->map->PGSELECT) & 0xfffe;
 400         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg | 0x1);
 401         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 402         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 403         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 404         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg);
 405
 406         return 0;
 407 }
 408
 409 static void rtl8187_set_channel(struct ieee80211_hw *dev, int channel)
 410 {
 411         u32 reg;
 412         struct rtl8187_priv *priv = dev->priv;
 413
 414         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 415         /* Enable TX loopback on MAC level to avoid TX during channel
 416          * changes, as this has be seen to causes problems and the
 417          * card will stop work until next reset
 418          */
 419         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 420                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
 421         msleep(10);
 422         rtl8225_rf_set_channel(dev, channel);
 423         msleep(10);
 424         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 425 }
 426
 427 static int rtl8187_start(struct ieee80211_hw *dev)
 428 {
 429         struct rtl8187_priv *priv = dev->priv;
 430         u32 reg;
 431         int ret;
 432
 433         ret = rtl8187_init_hw(dev);
 434         if (ret)
 435                 return ret;
 436
 437         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 438
 439         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 440         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 441
 442         rtl8187_init_urbs(dev);
 443
 444         reg = RTL818X_RX_CONF_ONLYERLPKT |
 445               RTL818X_RX_CONF_RX_AUTORESETPHY |
 446               RTL818X_RX_CONF_BSSID |
 447               RTL818X_RX_CONF_MGMT |
 448               RTL818X_RX_CONF_DATA |
 449               (7 << 13 /* RX FIFO threshold NONE */) |
 450               (7 << 10 /* MAX RX DMA */) |
 451               RTL818X_RX_CONF_BROADCAST |
 452               RTL818X_RX_CONF_NICMAC;
 453
 454         priv->rx_conf = reg;
 455         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 456
 457         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 458         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 459         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 460         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 461
 462         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 463         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 464         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 465         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 466         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 467
 468         reg  = RTL818X_TX_CONF_CW_MIN |
 469                (7 << 21 /* MAX TX DMA */) |
 470                RTL818X_TX_CONF_NO_ICV;
 471         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 472
 473         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 474         reg |= RTL818X_CMD_TX_ENABLE;
 475         reg |= RTL818X_CMD_RX_ENABLE;
 476         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 477
 478         return 0;
 479 }
 480
 481 static void rtl8187_stop(struct ieee80211_hw *dev)
 482 {
 483         struct rtl8187_priv *priv = dev->priv;
 484         struct rtl8187_rx_info *info;
 485         struct sk_buff *skb;
 486         u32 reg;
 487
 488         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 489
 490         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 491         reg &= ~RTL818X_CMD_TX_ENABLE;
 492         reg &= ~RTL818X_CMD_RX_ENABLE;
 493         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 494
 495         rtl8225_rf_stop(dev);
 496
 497         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 498         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 499         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 500         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 501
 502         while ((skb = skb_dequeue(&priv->rx_queue))) {
 503                 info = (struct rtl8187_rx_info *)skb->cb;
 504                 usb_kill_urb(info->urb);
 505                 kfree_skb(skb);
 506         }
 507         return;
 508 }
 509
 510 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 511                                  struct ieee80211_if_init_conf *conf)
 512 {
 513         struct rtl8187_priv *priv = dev->priv;
 514         int i;
 515
 516         if (priv->mode != IEEE80211_IF_TYPE_MNTR)
 517                 return -EOPNOTSUPP;
 518
 519         switch (conf->type) {
 520         case IEEE80211_IF_TYPE_STA:
 521                 priv->mode = conf->type;
 522                 break;
 523         default:
 524                 return -EOPNOTSUPP;
 525         }
 526
 527         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 528         for (i = 0; i < ETH_ALEN; i++)
 529                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
 530                                  ((u8 *)conf->mac_addr)[i]);
 531         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 532
 533         return 0;
 534 }
 535
 536 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
 537                                      struct ieee80211_if_init_conf *conf)
 538 {
 539         struct rtl8187_priv *priv = dev->priv;
 540         priv->mode = IEEE80211_IF_TYPE_MNTR;
 541 }
 542
 543 static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 544 {
 545         struct rtl8187_priv *priv = dev->priv;
 546         rtl8187_set_channel(dev, conf->channel);
 547
 548         rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
 549
 550         if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
 551                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
 552                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
 553                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
 554                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0x73);
 555         } else {
 556                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
 557                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
 558                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
 559                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0xa5);
 560         }
 561
 562         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 563         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
 564         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 565         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
 566         return 0;
 567 }
 568
 569 static int rtl8187_config_interface(struct ieee80211_hw *dev, int if_id,
 570                                     struct ieee80211_if_conf *conf)
 571 {
 572         struct rtl8187_priv *priv = dev->priv;
 573         int i;
 574
 575         priv->if_id = if_id;
 576
 577         for (i = 0; i < ETH_ALEN; i++)
 578                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 579
 580         if (is_valid_ether_addr(conf->bssid))
 581                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 582         else
 583                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 584
 585         return 0;
 586 }
 587
 588 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
 589                                      unsigned int changed_flags,
 590                                      unsigned int *total_flags,
 591                                      int mc_count, struct dev_addr_list *mclist)
 592 {
 593         struct rtl8187_priv *priv = dev->priv;
 594
 595         if (changed_flags & FIF_FCSFAIL)
 596                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
 597         if (changed_flags & FIF_CONTROL)
 598                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
 599         if (changed_flags & FIF_OTHER_BSS)
 600                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
 601         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
 602                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
 603         else
 604                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
 605
 606         *total_flags = 0;
 607
 608         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
 609                 *total_flags |= FIF_FCSFAIL;
 610         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
 611                 *total_flags |= FIF_CONTROL;
 612         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
 613                 *total_flags |= FIF_OTHER_BSS;
 614         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
 615                 *total_flags |= FIF_ALLMULTI;
 616
 617         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
 618 }
 619
 620 static const struct ieee80211_ops rtl8187_ops = {
 621         .tx                     = rtl8187_tx,
 622         .start                  = rtl8187_start,
 623         .stop                   = rtl8187_stop,
 624         .add_interface          = rtl8187_add_interface,
 625         .remove_interface       = rtl8187_remove_interface,
 626         .config                 = rtl8187_config,
 627         .config_interface       = rtl8187_config_interface,
 628         .configure_filter       = rtl8187_configure_filter,
 629 };
 630
 631 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
 632 {
 633         struct ieee80211_hw *dev = eeprom->data;
 634         struct rtl8187_priv *priv = dev->priv;
 635         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 636
 637         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
 638         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
 639         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
 640         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
 641 }
 642
 643 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
 644 {
 645         struct ieee80211_hw *dev = eeprom->data;
 646         struct rtl8187_priv *priv = dev->priv;
 647         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
 648
 649         if (eeprom->reg_data_in)
 650                 reg |= RTL818X_EEPROM_CMD_WRITE;
 651         if (eeprom->reg_data_out)
 652                 reg |= RTL818X_EEPROM_CMD_READ;
 653         if (eeprom->reg_data_clock)
 654                 reg |= RTL818X_EEPROM_CMD_CK;
 655         if (eeprom->reg_chip_select)
 656                 reg |= RTL818X_EEPROM_CMD_CS;
 657
 658         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
 659         udelay(10);
 660 }
 661
 662 static int __devinit rtl8187_probe(struct usb_interface *intf,
 663                                    const struct usb_device_id *id)
 664 {
 665         struct usb_device *udev = interface_to_usbdev(intf);
 666         struct ieee80211_hw *dev;
 667         struct rtl8187_priv *priv;
 668         struct eeprom_93cx6 eeprom;
 669         struct ieee80211_channel *channel;
 670         u16 txpwr, reg;
 671         int err, i;
 672         DECLARE_MAC_BUF(mac);
 673
 674         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
 675         if (!dev) {
 676                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
 677                 return -ENOMEM;
 678         }
 679
 680         priv = dev->priv;
 681
 682         SET_IEEE80211_DEV(dev, &intf->dev);
 683         usb_set_intfdata(intf, dev);
 684         priv->udev = udev;
 685
 686         usb_get_dev(udev);
 687
 688         skb_queue_head_init(&priv->rx_queue);
 689         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 690         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 691         priv->map = (struct rtl818x_csr *)0xFF00;
 692         priv->modes[0].mode = MODE_IEEE80211G;
 693         priv->modes[0].num_rates = ARRAY_SIZE(rtl818x_rates);
 694         priv->modes[0].rates = priv->rates;
 695         priv->modes[0].num_channels = ARRAY_SIZE(rtl818x_channels);
 696         priv->modes[0].channels = priv->channels;
 697         priv->modes[1].mode = MODE_IEEE80211B;
 698         priv->modes[1].num_rates = 4;
 699         priv->modes[1].rates = priv->rates;
 700         priv->modes[1].num_channels = ARRAY_SIZE(rtl818x_channels);
 701         priv->modes[1].channels = priv->channels;
 702         priv->mode = IEEE80211_IF_TYPE_MNTR;
 703         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 704                      IEEE80211_HW_RX_INCLUDES_FCS;
 705         dev->extra_tx_headroom = sizeof(struct rtl8187_tx_hdr);
 706         dev->queues = 1;
 707         dev->max_rssi = 65;
 708         dev->max_signal = 64;
 709
 710         for (i = 0; i < 2; i++)
 711                 if ((err = ieee80211_register_hwmode(dev, &priv->modes[i])))
 712                         goto err_free_dev;
 713
 714         eeprom.data = dev;
 715         eeprom.register_read = rtl8187_eeprom_register_read;
 716         eeprom.register_write = rtl8187_eeprom_register_write;
 717         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
 718                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 719         else
 720                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 721
 722         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 723         udelay(10);
 724
 725         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
 726                                (__le16 __force *)dev->wiphy->perm_addr, 3);
 727         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 728                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
 729                        "generated MAC address\n");
 730                 random_ether_addr(dev->wiphy->perm_addr);
 731         }
 732
 733         channel = priv->channels;
 734         for (i = 0; i < 3; i++) {
 735                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
 736                                   &txpwr);
 737                 (*channel++).val = txpwr & 0xFF;
 738                 (*channel++).val = txpwr >> 8;
 739         }
 740         for (i = 0; i < 2; i++) {
 741                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
 742                                   &txpwr);
 743                 (*channel++).val = txpwr & 0xFF;
 744                 (*channel++).val = txpwr >> 8;
 745         }
 746         for (i = 0; i < 2; i++) {
 747                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6 + i,
 748                                   &txpwr);
 749                 (*channel++).val = txpwr & 0xFF;
 750                 (*channel++).val = txpwr >> 8;
 751         }
 752
 753         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
 754                           &priv->txpwr_base);
 755
 756         reg = rtl818x_ioread16(priv, &priv->map->PGSELECT) & ~1;
 757         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg | 1);
 758         /* 0 means asic B-cut, we should use SW 3 wire
 759          * bit-by-bit banging for radio. 1 means we can use
 760          * USB specific request to write radio registers */
 761         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
 762         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg);
 763         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 764
 765         rtl8225_write(dev, 0, 0x1B7);
 766
 767         if (rtl8225_read(dev, 8) != 0x588 || rtl8225_read(dev, 9) != 0x700)
 768                 priv->rf_init = rtl8225_rf_init;
 769         else
 770                 priv->rf_init = rtl8225z2_rf_init;
 771
 772         rtl8225_write(dev, 0, 0x0B7);
 773
 774         err = ieee80211_register_hw(dev);
 775         if (err) {
 776                 printk(KERN_ERR "rtl8187: Cannot register device\n");
 777                 goto err_free_dev;
 778         }
 779
 780         printk(KERN_INFO "%s: hwaddr %s, rtl8187 V%d + %s\n",
 781                wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
 782                priv->asic_rev, priv->rf_init == rtl8225_rf_init ?
 783                "rtl8225" : "rtl8225z2");
 784
 785         return 0;
 786
 787  err_free_dev:
 788         ieee80211_free_hw(dev);
 789         usb_set_intfdata(intf, NULL);
 790         usb_put_dev(udev);
 791         return err;
 792 }
 793
 794 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
 795 {
 796         struct ieee80211_hw *dev = usb_get_intfdata(intf);
 797         struct rtl8187_priv *priv;
 798
 799         if (!dev)
 800                 return;
 801
 802         ieee80211_unregister_hw(dev);
 803
 804         priv = dev->priv;
 805         usb_put_dev(interface_to_usbdev(intf));
 806         ieee80211_free_hw(dev);
 807 }
 808
 809 static struct usb_driver rtl8187_driver = {
 810         .name           = KBUILD_MODNAME,
 811         .id_table       = rtl8187_table,
 812         .probe          = rtl8187_probe,
 813         .disconnect     = rtl8187_disconnect,
 814 };
 815
 816 static int __init rtl8187_init(void)
 817 {
 818         return usb_register(&rtl8187_driver);
 819 }
 820
 821 static void __exit rtl8187_exit(void)
 822 {
 823         usb_deregister(&rtl8187_driver);
 824 }
 825
 826 module_init(rtl8187_init);
 827 module_exit(rtl8187_exit);