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 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 ieee80211_tx_status status;
 149         struct sk_buff *skb = (struct sk_buff *)urb->context;
 150         struct rtl8187_tx_info *info = (struct rtl8187_tx_info *)skb->cb;
 151
 152         memset(&status, 0, sizeof(status));
 153
 154         usb_free_urb(info->urb);
 155         if (info->control)
 156                 memcpy(&status.control, info->control, sizeof(status.control));
 157         kfree(info->control);
 158         skb_pull(skb, sizeof(struct rtl8187_tx_hdr));
 159         status.flags |= IEEE80211_TX_STATUS_ACK;
 160         ieee80211_tx_status_irqsafe(info->dev, skb, &status);
 161 }
 162
 163 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
 164                       struct ieee80211_tx_control *control)
 165 {
 166         struct rtl8187_priv *priv = dev->priv;
 167         struct rtl8187_tx_hdr *hdr;
 168         struct rtl8187_tx_info *info;
 169         struct urb *urb;
 170         __le16 rts_dur = 0;
 171         u32 flags;
 172
 173         urb = usb_alloc_urb(0, GFP_ATOMIC);
 174         if (!urb) {
 175                 kfree_skb(skb);
 176                 return 0;
 177         }
 178
 179         flags = skb->len;
 180         flags |= RTL8187_TX_FLAG_NO_ENCRYPT;
 181
 182         flags |= ieee80211_get_tx_rate(dev, control)->hw_value << 24;
 183         if (ieee80211_get_morefrag((struct ieee80211_hdr *)skb->data))
 184                 flags |= RTL8187_TX_FLAG_MORE_FRAG;
 185         if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
 186                 flags |= RTL8187_TX_FLAG_RTS;
 187                 flags |= ieee80211_get_rts_cts_rate(dev, control)->hw_value << 19;
 188                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 189                                                  skb->len, control);
 190         } else if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
 191                 flags |= RTL8187_TX_FLAG_CTS;
 192                 flags |= ieee80211_get_rts_cts_rate(dev, control)->hw_value << 19;
 193         }
 194
 195         hdr = (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 196         hdr->flags = cpu_to_le32(flags);
 197         hdr->len = 0;
 198         hdr->rts_duration = rts_dur;
 199         hdr->retry = cpu_to_le32(control->retry_limit << 8);
 200
 201         info = (struct rtl8187_tx_info *)skb->cb;
 202         info->control = kmemdup(control, sizeof(*control), GFP_ATOMIC);
 203         info->urb = urb;
 204         info->dev = dev;
 205         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, 2),
 206                           hdr, skb->len, rtl8187_tx_cb, skb);
 207         usb_submit_urb(urb, GFP_ATOMIC);
 208
 209         return 0;
 210 }
 211
 212 static void rtl8187_rx_cb(struct urb *urb)
 213 {
 214         struct sk_buff *skb = (struct sk_buff *)urb->context;
 215         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 216         struct ieee80211_hw *dev = info->dev;
 217         struct rtl8187_priv *priv = dev->priv;
 218         struct rtl8187_rx_hdr *hdr;
 219         struct ieee80211_rx_status rx_status = { 0 };
 220         int rate, signal;
 221         u32 flags;
 222
 223         spin_lock(&priv->rx_queue.lock);
 224         if (skb->next)
 225                 __skb_unlink(skb, &priv->rx_queue);
 226         else {
 227                 spin_unlock(&priv->rx_queue.lock);
 228                 return;
 229         }
 230         spin_unlock(&priv->rx_queue.lock);
 231
 232         if (unlikely(urb->status)) {
 233                 usb_free_urb(urb);
 234                 dev_kfree_skb_irq(skb);
 235                 return;
 236         }
 237
 238         skb_put(skb, urb->actual_length);
 239         hdr = (struct rtl8187_rx_hdr *)(skb_tail_pointer(skb) - sizeof(*hdr));
 240         flags = le32_to_cpu(hdr->flags);
 241         skb_trim(skb, flags & 0x0FFF);
 242
 243         signal = hdr->agc >> 1;
 244         rate = (flags >> 20) & 0xF;
 245         if (rate > 3) { /* OFDM rate */
 246                 if (signal > 90)
 247                         signal = 90;
 248                 else if (signal < 25)
 249                         signal = 25;
 250                 signal = 90 - signal;
 251         } else {        /* CCK rate */
 252                 if (signal > 95)
 253                         signal = 95;
 254                 else if (signal < 30)
 255                         signal = 30;
 256                 signal = 95 - signal;
 257         }
 258
 259         rx_status.antenna = (hdr->signal >> 7) & 1;
 260         rx_status.qual = 64 - min(hdr->noise, (u8)64);
 261         rx_status.signal = signal;
 262         rx_status.rate_idx = rate;
 263         rx_status.freq = dev->conf.channel->center_freq;
 264         rx_status.band = dev->conf.channel->band;
 265         rx_status.mactime = le64_to_cpu(hdr->mac_time);
 266         rx_status.flag |= RX_FLAG_TSFT;
 267         if (flags & (1 << 13))
 268                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 269         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 270
 271         skb = dev_alloc_skb(RTL8187_MAX_RX);
 272         if (unlikely(!skb)) {
 273                 usb_free_urb(urb);
 274                 /* TODO check rx queue length and refill *somewhere* */
 275                 return;
 276         }
 277
 278         info = (struct rtl8187_rx_info *)skb->cb;
 279         info->urb = urb;
 280         info->dev = dev;
 281         urb->transfer_buffer = skb_tail_pointer(skb);
 282         urb->context = skb;
 283         skb_queue_tail(&priv->rx_queue, skb);
 284
 285         usb_submit_urb(urb, GFP_ATOMIC);
 286 }
 287
 288 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 289 {
 290         struct rtl8187_priv *priv = dev->priv;
 291         struct urb *entry;
 292         struct sk_buff *skb;
 293         struct rtl8187_rx_info *info;
 294
 295         while (skb_queue_len(&priv->rx_queue) < 8) {
 296                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 297                 if (!skb)
 298                         break;
 299                 entry = usb_alloc_urb(0, GFP_KERNEL);
 300                 if (!entry) {
 301                         kfree_skb(skb);
 302                         break;
 303                 }
 304                 usb_fill_bulk_urb(entry, priv->udev,
 305                                   usb_rcvbulkpipe(priv->udev, 1),
 306                                   skb_tail_pointer(skb),
 307                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 308                 info = (struct rtl8187_rx_info *)skb->cb;
 309                 info->urb = entry;
 310                 info->dev = dev;
 311                 skb_queue_tail(&priv->rx_queue, skb);
 312                 usb_submit_urb(entry, GFP_KERNEL);
 313         }
 314
 315         return 0;
 316 }
 317
 318 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 319 {
 320         struct rtl8187_priv *priv = dev->priv;
 321         u8 reg;
 322         int i;
 323
 324         /* reset */
 325         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 326         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 327         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 328         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 329         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 330         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 331         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 332
 333         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 334
 335         msleep(200);
 336         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 337         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 338         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 339         msleep(200);
 340
 341         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 342         reg &= (1 << 1);
 343         reg |= RTL818X_CMD_RESET;
 344         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 345
 346         i = 10;
 347         do {
 348                 msleep(2);
 349                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 350                       RTL818X_CMD_RESET))
 351                         break;
 352         } while (--i);
 353
 354         if (!i) {
 355                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 356                 return -ETIMEDOUT;
 357         }
 358
 359         /* reload registers from eeprom */
 360         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 361
 362         i = 10;
 363         do {
 364                 msleep(4);
 365                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 366                       RTL818X_EEPROM_CMD_CONFIG))
 367                         break;
 368         } while (--i);
 369
 370         if (!i) {
 371                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 372                        wiphy_name(dev->wiphy));
 373                 return -ETIMEDOUT;
 374         }
 375
 376         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 377         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 378         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 379         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 380         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 381         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 382         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 383
 384         /* setup card */
 385         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 386         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 387
 388         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 389         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 390         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 391
 392         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 393
 394         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 395         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 396         reg &= 0x3F;
 397         reg |= 0x80;
 398         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 399
 400         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 401
 402         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 403         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 404         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 405
 406         // TODO: set RESP_RATE and BRSR properly
 407         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 408         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 409
 410         /* host_usb_init */
 411         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 412         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 413         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 414         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 415         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 416         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 417         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 418         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 419         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 420         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 421         msleep(100);
 422
 423         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 424         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 425         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 426         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 427         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 428         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 429         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 430         msleep(100);
 431
 432         priv->rf->init(dev);
 433
 434         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 435         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 436         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 437         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 438         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 439         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 440         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 441
 442         return 0;
 443 }
 444
 445 static int rtl8187_start(struct ieee80211_hw *dev)
 446 {
 447         struct rtl8187_priv *priv = dev->priv;
 448         u32 reg;
 449         int ret;
 450
 451         ret = rtl8187_init_hw(dev);
 452         if (ret)
 453                 return ret;
 454
 455         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 456
 457         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 458         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 459
 460         rtl8187_init_urbs(dev);
 461
 462         reg = RTL818X_RX_CONF_ONLYERLPKT |
 463               RTL818X_RX_CONF_RX_AUTORESETPHY |
 464               RTL818X_RX_CONF_BSSID |
 465               RTL818X_RX_CONF_MGMT |
 466               RTL818X_RX_CONF_DATA |
 467               (7 << 13 /* RX FIFO threshold NONE */) |
 468               (7 << 10 /* MAX RX DMA */) |
 469               RTL818X_RX_CONF_BROADCAST |
 470               RTL818X_RX_CONF_NICMAC;
 471
 472         priv->rx_conf = reg;
 473         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 474
 475         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 476         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 477         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 478         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 479
 480         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 481         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 482         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 483         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 484         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 485
 486         reg  = RTL818X_TX_CONF_CW_MIN |
 487                (7 << 21 /* MAX TX DMA */) |
 488                RTL818X_TX_CONF_NO_ICV;
 489         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 490
 491         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 492         reg |= RTL818X_CMD_TX_ENABLE;
 493         reg |= RTL818X_CMD_RX_ENABLE;
 494         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 495
 496         return 0;
 497 }
 498
 499 static void rtl8187_stop(struct ieee80211_hw *dev)
 500 {
 501         struct rtl8187_priv *priv = dev->priv;
 502         struct rtl8187_rx_info *info;
 503         struct sk_buff *skb;
 504         u32 reg;
 505
 506         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 507
 508         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 509         reg &= ~RTL818X_CMD_TX_ENABLE;
 510         reg &= ~RTL818X_CMD_RX_ENABLE;
 511         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 512
 513         priv->rf->stop(dev);
 514
 515         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 516         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 517         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 518         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 519
 520         while ((skb = skb_dequeue(&priv->rx_queue))) {
 521                 info = (struct rtl8187_rx_info *)skb->cb;
 522                 usb_kill_urb(info->urb);
 523                 kfree_skb(skb);
 524         }
 525         return;
 526 }
 527
 528 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 529                                  struct ieee80211_if_init_conf *conf)
 530 {
 531         struct rtl8187_priv *priv = dev->priv;
 532         int i;
 533
 534         if (priv->mode != IEEE80211_IF_TYPE_MNTR)
 535                 return -EOPNOTSUPP;
 536
 537         switch (conf->type) {
 538         case IEEE80211_IF_TYPE_STA:
 539                 priv->mode = conf->type;
 540                 break;
 541         default:
 542                 return -EOPNOTSUPP;
 543         }
 544
 545         priv->vif = conf->vif;
 546
 547         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 548         for (i = 0; i < ETH_ALEN; i++)
 549                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
 550                                  ((u8 *)conf->mac_addr)[i]);
 551         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 552
 553         return 0;
 554 }
 555
 556 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
 557                                      struct ieee80211_if_init_conf *conf)
 558 {
 559         struct rtl8187_priv *priv = dev->priv;
 560         priv->mode = IEEE80211_IF_TYPE_MNTR;
 561         priv->vif = NULL;
 562 }
 563
 564 static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 565 {
 566         struct rtl8187_priv *priv = dev->priv;
 567         u32 reg;
 568
 569         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 570         /* Enable TX loopback on MAC level to avoid TX during channel
 571          * changes, as this has be seen to causes problems and the
 572          * card will stop work until next reset
 573          */
 574         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 575                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
 576         msleep(10);
 577         priv->rf->set_chan(dev, conf);
 578         msleep(10);
 579         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 580
 581         rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
 582
 583         if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
 584                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
 585                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
 586                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
 587                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0x73);
 588         } else {
 589                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
 590                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
 591                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
 592                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0xa5);
 593         }
 594
 595         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 596         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
 597         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 598         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
 599         return 0;
 600 }
 601
 602 static int rtl8187_config_interface(struct ieee80211_hw *dev,
 603                                     struct ieee80211_vif *vif,
 604                                     struct ieee80211_if_conf *conf)
 605 {
 606         struct rtl8187_priv *priv = dev->priv;
 607         int i;
 608
 609         for (i = 0; i < ETH_ALEN; i++)
 610                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 611
 612         if (is_valid_ether_addr(conf->bssid))
 613                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 614         else
 615                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 616
 617         return 0;
 618 }
 619
 620 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
 621                                      unsigned int changed_flags,
 622                                      unsigned int *total_flags,
 623                                      int mc_count, struct dev_addr_list *mclist)
 624 {
 625         struct rtl8187_priv *priv = dev->priv;
 626
 627         if (changed_flags & FIF_FCSFAIL)
 628                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
 629         if (changed_flags & FIF_CONTROL)
 630                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
 631         if (changed_flags & FIF_OTHER_BSS)
 632                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
 633         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
 634                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
 635         else
 636                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
 637
 638         *total_flags = 0;
 639
 640         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
 641                 *total_flags |= FIF_FCSFAIL;
 642         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
 643                 *total_flags |= FIF_CONTROL;
 644         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
 645                 *total_flags |= FIF_OTHER_BSS;
 646         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
 647                 *total_flags |= FIF_ALLMULTI;
 648
 649         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
 650 }
 651
 652 static const struct ieee80211_ops rtl8187_ops = {
 653         .tx                     = rtl8187_tx,
 654         .start                  = rtl8187_start,
 655         .stop                   = rtl8187_stop,
 656         .add_interface          = rtl8187_add_interface,
 657         .remove_interface       = rtl8187_remove_interface,
 658         .config                 = rtl8187_config,
 659         .config_interface       = rtl8187_config_interface,
 660         .configure_filter       = rtl8187_configure_filter,
 661 };
 662
 663 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
 664 {
 665         struct ieee80211_hw *dev = eeprom->data;
 666         struct rtl8187_priv *priv = dev->priv;
 667         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 668
 669         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
 670         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
 671         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
 672         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
 673 }
 674
 675 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
 676 {
 677         struct ieee80211_hw *dev = eeprom->data;
 678         struct rtl8187_priv *priv = dev->priv;
 679         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
 680
 681         if (eeprom->reg_data_in)
 682                 reg |= RTL818X_EEPROM_CMD_WRITE;
 683         if (eeprom->reg_data_out)
 684                 reg |= RTL818X_EEPROM_CMD_READ;
 685         if (eeprom->reg_data_clock)
 686                 reg |= RTL818X_EEPROM_CMD_CK;
 687         if (eeprom->reg_chip_select)
 688                 reg |= RTL818X_EEPROM_CMD_CS;
 689
 690         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
 691         udelay(10);
 692 }
 693
 694 static int __devinit rtl8187_probe(struct usb_interface *intf,
 695                                    const struct usb_device_id *id)
 696 {
 697         struct usb_device *udev = interface_to_usbdev(intf);
 698         struct ieee80211_hw *dev;
 699         struct rtl8187_priv *priv;
 700         struct eeprom_93cx6 eeprom;
 701         struct ieee80211_channel *channel;
 702         u16 txpwr, reg;
 703         int err, i;
 704         DECLARE_MAC_BUF(mac);
 705
 706         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
 707         if (!dev) {
 708                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
 709                 return -ENOMEM;
 710         }
 711
 712         priv = dev->priv;
 713
 714         SET_IEEE80211_DEV(dev, &intf->dev);
 715         usb_set_intfdata(intf, dev);
 716         priv->udev = udev;
 717
 718         usb_get_dev(udev);
 719
 720         skb_queue_head_init(&priv->rx_queue);
 721
 722         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
 723         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
 724
 725         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 726         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 727         priv->map = (struct rtl818x_csr *)0xFF00;
 728
 729         priv->band.band = IEEE80211_BAND_2GHZ;
 730         priv->band.channels = priv->channels;
 731         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
 732         priv->band.bitrates = priv->rates;
 733         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
 734         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
 735
 736
 737         priv->mode = IEEE80211_IF_TYPE_MNTR;
 738         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 739                      IEEE80211_HW_RX_INCLUDES_FCS |
 740                      IEEE80211_HW_SIGNAL_UNSPEC;
 741         dev->extra_tx_headroom = sizeof(struct rtl8187_tx_hdr);
 742         dev->queues = 1;
 743         dev->max_signal = 65;
 744
 745         eeprom.data = dev;
 746         eeprom.register_read = rtl8187_eeprom_register_read;
 747         eeprom.register_write = rtl8187_eeprom_register_write;
 748         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
 749                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 750         else
 751                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 752
 753         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 754         udelay(10);
 755
 756         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
 757                                (__le16 __force *)dev->wiphy->perm_addr, 3);
 758         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 759                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
 760                        "generated MAC address\n");
 761                 random_ether_addr(dev->wiphy->perm_addr);
 762         }
 763
 764         channel = priv->channels;
 765         for (i = 0; i < 3; i++) {
 766                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
 767                                   &txpwr);
 768                 (*channel++).hw_value = txpwr & 0xFF;
 769                 (*channel++).hw_value = txpwr >> 8;
 770         }
 771         for (i = 0; i < 2; i++) {
 772                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
 773                                   &txpwr);
 774                 (*channel++).hw_value = txpwr & 0xFF;
 775                 (*channel++).hw_value = txpwr >> 8;
 776         }
 777         for (i = 0; i < 2; i++) {
 778                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6 + i,
 779                                   &txpwr);
 780                 (*channel++).hw_value = txpwr & 0xFF;
 781                 (*channel++).hw_value = txpwr >> 8;
 782         }
 783
 784         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
 785                           &priv->txpwr_base);
 786
 787         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 788         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 789         /* 0 means asic B-cut, we should use SW 3 wire
 790          * bit-by-bit banging for radio. 1 means we can use
 791          * USB specific request to write radio registers */
 792         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
 793         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 794         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 795
 796         priv->rf = rtl8187_detect_rf(dev);
 797
 798         err = ieee80211_register_hw(dev);
 799         if (err) {
 800                 printk(KERN_ERR "rtl8187: Cannot register device\n");
 801                 goto err_free_dev;
 802         }
 803
 804         printk(KERN_INFO "%s: hwaddr %s, rtl8187 V%d + %s\n",
 805                wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
 806                priv->asic_rev, priv->rf->name);
 807
 808         return 0;
 809
 810  err_free_dev:
 811         ieee80211_free_hw(dev);
 812         usb_set_intfdata(intf, NULL);
 813         usb_put_dev(udev);
 814         return err;
 815 }
 816
 817 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
 818 {
 819         struct ieee80211_hw *dev = usb_get_intfdata(intf);
 820         struct rtl8187_priv *priv;
 821
 822         if (!dev)
 823                 return;
 824
 825         ieee80211_unregister_hw(dev);
 826
 827         priv = dev->priv;
 828         usb_put_dev(interface_to_usbdev(intf));
 829         ieee80211_free_hw(dev);
 830 }
 831
 832 static struct usb_driver rtl8187_driver = {
 833         .name           = KBUILD_MODNAME,
 834         .id_table       = rtl8187_table,
 835         .probe          = rtl8187_probe,
 836         .disconnect     = rtl8187_disconnect,
 837 };
 838
 839 static int __init rtl8187_init(void)
 840 {
 841         return usb_register(&rtl8187_driver);
 842 }
 843
 844 static void __exit rtl8187_exit(void)
 845 {
 846         usb_deregister(&rtl8187_driver);
 847 }
 848
 849 module_init(rtl8187_init);
 850 module_exit(rtl8187_exit);