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 ieee80211_tx_status status;
 154         struct sk_buff *skb = (struct sk_buff *)urb->context;
 155         struct rtl8187_tx_info *info = (struct rtl8187_tx_info *)skb->cb;
 156
 157         memset(&status, 0, sizeof(status));
 158
 159         usb_free_urb(info->urb);
 160         if (info->control)
 161                 memcpy(&status.control, info->control, sizeof(status.control));
 162         kfree(info->control);
 163         skb_pull(skb, sizeof(struct rtl8187_tx_hdr));
 164         status.flags |= IEEE80211_TX_STATUS_ACK;
 165         ieee80211_tx_status_irqsafe(info->dev, skb, &status);
 166 }
 167
 168 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
 169                       struct ieee80211_tx_control *control)
 170 {
 171         struct rtl8187_priv *priv = dev->priv;
 172         struct rtl8187_tx_hdr *hdr;
 173         struct rtl8187_tx_info *info;
 174         struct urb *urb;
 175         __le16 rts_dur = 0;
 176         u32 flags;
 177         int rc;
 178
 179         urb = usb_alloc_urb(0, GFP_ATOMIC);
 180         if (!urb) {
 181                 kfree_skb(skb);
 182                 return 0;
 183         }
 184
 185         flags = skb->len;
 186         flags |= RTL8187_TX_FLAG_NO_ENCRYPT;
 187
 188         BUG_ON(!control->tx_rate);
 189
 190         flags |= control->tx_rate->hw_value << 24;
 191         if (ieee80211_get_morefrag((struct ieee80211_hdr *)skb->data))
 192                 flags |= RTL8187_TX_FLAG_MORE_FRAG;
 193         if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
 194                 BUG_ON(!control->rts_cts_rate);
 195                 flags |= RTL8187_TX_FLAG_RTS;
 196                 flags |= control->rts_cts_rate->hw_value << 19;
 197                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 198                                                  skb->len, control);
 199         } else if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
 200                 BUG_ON(!control->rts_cts_rate);
 201                 flags |= RTL8187_TX_FLAG_CTS;
 202                 flags |= control->rts_cts_rate->hw_value << 19;
 203         }
 204
 205         hdr = (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 206         hdr->flags = cpu_to_le32(flags);
 207         hdr->len = 0;
 208         hdr->rts_duration = rts_dur;
 209         hdr->retry = cpu_to_le32(control->retry_limit << 8);
 210
 211         info = (struct rtl8187_tx_info *)skb->cb;
 212         info->control = kmemdup(control, sizeof(*control), GFP_ATOMIC);
 213         info->urb = urb;
 214         info->dev = dev;
 215         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, 2),
 216                           hdr, skb->len, rtl8187_tx_cb, skb);
 217         rc = usb_submit_urb(urb, GFP_ATOMIC);
 218         if (rc < 0) {
 219                 usb_free_urb(urb);
 220                 kfree_skb(skb);
 221         }
 222
 223         return 0;
 224 }
 225
 226 static void rtl8187_rx_cb(struct urb *urb)
 227 {
 228         struct sk_buff *skb = (struct sk_buff *)urb->context;
 229         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 230         struct ieee80211_hw *dev = info->dev;
 231         struct rtl8187_priv *priv = dev->priv;
 232         struct rtl8187_rx_hdr *hdr;
 233         struct ieee80211_rx_status rx_status = { 0 };
 234         int rate, signal;
 235         u32 flags;
 236
 237         spin_lock(&priv->rx_queue.lock);
 238         if (skb->next)
 239                 __skb_unlink(skb, &priv->rx_queue);
 240         else {
 241                 spin_unlock(&priv->rx_queue.lock);
 242                 return;
 243         }
 244         spin_unlock(&priv->rx_queue.lock);
 245
 246         if (unlikely(urb->status)) {
 247                 usb_free_urb(urb);
 248                 dev_kfree_skb_irq(skb);
 249                 return;
 250         }
 251
 252         skb_put(skb, urb->actual_length);
 253         hdr = (struct rtl8187_rx_hdr *)(skb_tail_pointer(skb) - sizeof(*hdr));
 254         flags = le32_to_cpu(hdr->flags);
 255         skb_trim(skb, flags & 0x0FFF);
 256
 257         signal = hdr->agc >> 1;
 258         rate = (flags >> 20) & 0xF;
 259         if (rate > 3) { /* OFDM rate */
 260                 if (signal > 90)
 261                         signal = 90;
 262                 else if (signal < 25)
 263                         signal = 25;
 264                 signal = 90 - signal;
 265         } else {        /* CCK rate */
 266                 if (signal > 95)
 267                         signal = 95;
 268                 else if (signal < 30)
 269                         signal = 30;
 270                 signal = 95 - signal;
 271         }
 272
 273         rx_status.antenna = (hdr->signal >> 7) & 1;
 274         rx_status.signal = 64 - min(hdr->noise, (u8)64);
 275         rx_status.ssi = signal;
 276         rx_status.rate_idx = rate;
 277         rx_status.freq = dev->conf.channel->center_freq;
 278         rx_status.band = dev->conf.channel->band;
 279         rx_status.mactime = le64_to_cpu(hdr->mac_time);
 280         rx_status.flag |= RX_FLAG_TSFT;
 281         if (flags & (1 << 13))
 282                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 283         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 284
 285         skb = dev_alloc_skb(RTL8187_MAX_RX);
 286         if (unlikely(!skb)) {
 287                 usb_free_urb(urb);
 288                 /* TODO check rx queue length and refill *somewhere* */
 289                 return;
 290         }
 291
 292         info = (struct rtl8187_rx_info *)skb->cb;
 293         info->urb = urb;
 294         info->dev = dev;
 295         urb->transfer_buffer = skb_tail_pointer(skb);
 296         urb->context = skb;
 297         skb_queue_tail(&priv->rx_queue, skb);
 298
 299         usb_submit_urb(urb, GFP_ATOMIC);
 300 }
 301
 302 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 303 {
 304         struct rtl8187_priv *priv = dev->priv;
 305         struct urb *entry;
 306         struct sk_buff *skb;
 307         struct rtl8187_rx_info *info;
 308
 309         while (skb_queue_len(&priv->rx_queue) < 8) {
 310                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 311                 if (!skb)
 312                         break;
 313                 entry = usb_alloc_urb(0, GFP_KERNEL);
 314                 if (!entry) {
 315                         kfree_skb(skb);
 316                         break;
 317                 }
 318                 usb_fill_bulk_urb(entry, priv->udev,
 319                                   usb_rcvbulkpipe(priv->udev, 1),
 320                                   skb_tail_pointer(skb),
 321                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 322                 info = (struct rtl8187_rx_info *)skb->cb;
 323                 info->urb = entry;
 324                 info->dev = dev;
 325                 skb_queue_tail(&priv->rx_queue, skb);
 326                 usb_submit_urb(entry, GFP_KERNEL);
 327         }
 328
 329         return 0;
 330 }
 331
 332 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 333 {
 334         struct rtl8187_priv *priv = dev->priv;
 335         u8 reg;
 336         int i;
 337
 338         /* reset */
 339         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 340         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 341         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 342         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 343         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 344         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 345         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 346
 347         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 348
 349         msleep(200);
 350         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 351         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 352         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 353         msleep(200);
 354
 355         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 356         reg &= (1 << 1);
 357         reg |= RTL818X_CMD_RESET;
 358         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 359
 360         i = 10;
 361         do {
 362                 msleep(2);
 363                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 364                       RTL818X_CMD_RESET))
 365                         break;
 366         } while (--i);
 367
 368         if (!i) {
 369                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 370                 return -ETIMEDOUT;
 371         }
 372
 373         /* reload registers from eeprom */
 374         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 375
 376         i = 10;
 377         do {
 378                 msleep(4);
 379                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 380                       RTL818X_EEPROM_CMD_CONFIG))
 381                         break;
 382         } while (--i);
 383
 384         if (!i) {
 385                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 386                        wiphy_name(dev->wiphy));
 387                 return -ETIMEDOUT;
 388         }
 389
 390         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 391         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 392         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 393         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 394         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 395         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 396         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 397
 398         /* setup card */
 399         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 400         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 401
 402         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 403         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 404         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 405
 406         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 407
 408         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 409         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 410         reg &= 0x3F;
 411         reg |= 0x80;
 412         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 413
 414         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 415
 416         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 417         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 418         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 419
 420         // TODO: set RESP_RATE and BRSR properly
 421         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 422         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 423
 424         /* host_usb_init */
 425         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 426         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 427         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 428         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 429         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 430         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 431         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 432         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 433         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 434         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 435         msleep(100);
 436
 437         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 438         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 439         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 440         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 441         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 442         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 443         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 444         msleep(100);
 445
 446         priv->rf->init(dev);
 447
 448         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 449         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 450         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 451         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 452         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 453         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 454         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 455
 456         return 0;
 457 }
 458
 459 static int rtl8187_start(struct ieee80211_hw *dev)
 460 {
 461         struct rtl8187_priv *priv = dev->priv;
 462         u32 reg;
 463         int ret;
 464
 465         ret = rtl8187_init_hw(dev);
 466         if (ret)
 467                 return ret;
 468
 469         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 470
 471         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 472         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 473
 474         rtl8187_init_urbs(dev);
 475
 476         reg = RTL818X_RX_CONF_ONLYERLPKT |
 477               RTL818X_RX_CONF_RX_AUTORESETPHY |
 478               RTL818X_RX_CONF_BSSID |
 479               RTL818X_RX_CONF_MGMT |
 480               RTL818X_RX_CONF_DATA |
 481               (7 << 13 /* RX FIFO threshold NONE */) |
 482               (7 << 10 /* MAX RX DMA */) |
 483               RTL818X_RX_CONF_BROADCAST |
 484               RTL818X_RX_CONF_NICMAC;
 485
 486         priv->rx_conf = reg;
 487         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 488
 489         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 490         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 491         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 492         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 493
 494         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 495         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 496         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 497         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 498         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 499
 500         reg  = RTL818X_TX_CONF_CW_MIN |
 501                (7 << 21 /* MAX TX DMA */) |
 502                RTL818X_TX_CONF_NO_ICV;
 503         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 504
 505         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 506         reg |= RTL818X_CMD_TX_ENABLE;
 507         reg |= RTL818X_CMD_RX_ENABLE;
 508         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 509
 510         return 0;
 511 }
 512
 513 static void rtl8187_stop(struct ieee80211_hw *dev)
 514 {
 515         struct rtl8187_priv *priv = dev->priv;
 516         struct rtl8187_rx_info *info;
 517         struct sk_buff *skb;
 518         u32 reg;
 519
 520         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 521
 522         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 523         reg &= ~RTL818X_CMD_TX_ENABLE;
 524         reg &= ~RTL818X_CMD_RX_ENABLE;
 525         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 526
 527         priv->rf->stop(dev);
 528
 529         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 530         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 531         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 532         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 533
 534         while ((skb = skb_dequeue(&priv->rx_queue))) {
 535                 info = (struct rtl8187_rx_info *)skb->cb;
 536                 usb_kill_urb(info->urb);
 537                 kfree_skb(skb);
 538         }
 539         return;
 540 }
 541
 542 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 543                                  struct ieee80211_if_init_conf *conf)
 544 {
 545         struct rtl8187_priv *priv = dev->priv;
 546         int i;
 547
 548         if (priv->mode != IEEE80211_IF_TYPE_MNTR)
 549                 return -EOPNOTSUPP;
 550
 551         switch (conf->type) {
 552         case IEEE80211_IF_TYPE_STA:
 553                 priv->mode = conf->type;
 554                 break;
 555         default:
 556                 return -EOPNOTSUPP;
 557         }
 558
 559         priv->vif = conf->vif;
 560
 561         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 562         for (i = 0; i < ETH_ALEN; i++)
 563                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
 564                                  ((u8 *)conf->mac_addr)[i]);
 565         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 566
 567         return 0;
 568 }
 569
 570 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
 571                                      struct ieee80211_if_init_conf *conf)
 572 {
 573         struct rtl8187_priv *priv = dev->priv;
 574         priv->mode = IEEE80211_IF_TYPE_MNTR;
 575         priv->vif = NULL;
 576 }
 577
 578 static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 579 {
 580         struct rtl8187_priv *priv = dev->priv;
 581         u32 reg;
 582
 583         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 584         /* Enable TX loopback on MAC level to avoid TX during channel
 585          * changes, as this has be seen to causes problems and the
 586          * card will stop work until next reset
 587          */
 588         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 589                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
 590         msleep(10);
 591         priv->rf->set_chan(dev, conf);
 592         msleep(10);
 593         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 594
 595         rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
 596
 597         if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
 598                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
 599                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
 600                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
 601                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0x73);
 602         } else {
 603                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
 604                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
 605                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
 606                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0xa5);
 607         }
 608
 609         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 610         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
 611         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 612         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
 613         return 0;
 614 }
 615
 616 static int rtl8187_config_interface(struct ieee80211_hw *dev,
 617                                     struct ieee80211_vif *vif,
 618                                     struct ieee80211_if_conf *conf)
 619 {
 620         struct rtl8187_priv *priv = dev->priv;
 621         int i;
 622
 623         for (i = 0; i < ETH_ALEN; i++)
 624                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 625
 626         if (is_valid_ether_addr(conf->bssid))
 627                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 628         else
 629                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 630
 631         return 0;
 632 }
 633
 634 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
 635                                      unsigned int changed_flags,
 636                                      unsigned int *total_flags,
 637                                      int mc_count, struct dev_addr_list *mclist)
 638 {
 639         struct rtl8187_priv *priv = dev->priv;
 640
 641         if (changed_flags & FIF_FCSFAIL)
 642                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
 643         if (changed_flags & FIF_CONTROL)
 644                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
 645         if (changed_flags & FIF_OTHER_BSS)
 646                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
 647         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
 648                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
 649         else
 650                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
 651
 652         *total_flags = 0;
 653
 654         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
 655                 *total_flags |= FIF_FCSFAIL;
 656         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
 657                 *total_flags |= FIF_CONTROL;
 658         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
 659                 *total_flags |= FIF_OTHER_BSS;
 660         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
 661                 *total_flags |= FIF_ALLMULTI;
 662
 663         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
 664 }
 665
 666 static const struct ieee80211_ops rtl8187_ops = {
 667         .tx                     = rtl8187_tx,
 668         .start                  = rtl8187_start,
 669         .stop                   = rtl8187_stop,
 670         .add_interface          = rtl8187_add_interface,
 671         .remove_interface       = rtl8187_remove_interface,
 672         .config                 = rtl8187_config,
 673         .config_interface       = rtl8187_config_interface,
 674         .configure_filter       = rtl8187_configure_filter,
 675 };
 676
 677 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
 678 {
 679         struct ieee80211_hw *dev = eeprom->data;
 680         struct rtl8187_priv *priv = dev->priv;
 681         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 682
 683         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
 684         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
 685         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
 686         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
 687 }
 688
 689 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
 690 {
 691         struct ieee80211_hw *dev = eeprom->data;
 692         struct rtl8187_priv *priv = dev->priv;
 693         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
 694
 695         if (eeprom->reg_data_in)
 696                 reg |= RTL818X_EEPROM_CMD_WRITE;
 697         if (eeprom->reg_data_out)
 698                 reg |= RTL818X_EEPROM_CMD_READ;
 699         if (eeprom->reg_data_clock)
 700                 reg |= RTL818X_EEPROM_CMD_CK;
 701         if (eeprom->reg_chip_select)
 702                 reg |= RTL818X_EEPROM_CMD_CS;
 703
 704         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
 705         udelay(10);
 706 }
 707
 708 static int __devinit rtl8187_probe(struct usb_interface *intf,
 709                                    const struct usb_device_id *id)
 710 {
 711         struct usb_device *udev = interface_to_usbdev(intf);
 712         struct ieee80211_hw *dev;
 713         struct rtl8187_priv *priv;
 714         struct eeprom_93cx6 eeprom;
 715         struct ieee80211_channel *channel;
 716         u16 txpwr, reg;
 717         int err, i;
 718         DECLARE_MAC_BUF(mac);
 719
 720         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
 721         if (!dev) {
 722                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
 723                 return -ENOMEM;
 724         }
 725
 726         priv = dev->priv;
 727
 728         SET_IEEE80211_DEV(dev, &intf->dev);
 729         usb_set_intfdata(intf, dev);
 730         priv->udev = udev;
 731
 732         usb_get_dev(udev);
 733
 734         skb_queue_head_init(&priv->rx_queue);
 735
 736         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
 737         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
 738
 739         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 740         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 741         priv->map = (struct rtl818x_csr *)0xFF00;
 742
 743         priv->band.band = IEEE80211_BAND_2GHZ;
 744         priv->band.channels = priv->channels;
 745         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
 746         priv->band.bitrates = priv->rates;
 747         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
 748         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
 749
 750
 751         priv->mode = IEEE80211_IF_TYPE_MNTR;
 752         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 753                      IEEE80211_HW_RX_INCLUDES_FCS;
 754         dev->extra_tx_headroom = sizeof(struct rtl8187_tx_hdr);
 755         dev->queues = 1;
 756         dev->max_rssi = 65;
 757         dev->max_signal = 64;
 758
 759         eeprom.data = dev;
 760         eeprom.register_read = rtl8187_eeprom_register_read;
 761         eeprom.register_write = rtl8187_eeprom_register_write;
 762         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
 763                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 764         else
 765                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 766
 767         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 768         udelay(10);
 769
 770         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
 771                                (__le16 __force *)dev->wiphy->perm_addr, 3);
 772         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 773                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
 774                        "generated MAC address\n");
 775                 random_ether_addr(dev->wiphy->perm_addr);
 776         }
 777
 778         channel = priv->channels;
 779         for (i = 0; i < 3; i++) {
 780                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
 781                                   &txpwr);
 782                 (*channel++).hw_value = txpwr & 0xFF;
 783                 (*channel++).hw_value = txpwr >> 8;
 784         }
 785         for (i = 0; i < 2; i++) {
 786                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
 787                                   &txpwr);
 788                 (*channel++).hw_value = txpwr & 0xFF;
 789                 (*channel++).hw_value = txpwr >> 8;
 790         }
 791         for (i = 0; i < 2; i++) {
 792                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6 + i,
 793                                   &txpwr);
 794                 (*channel++).hw_value = txpwr & 0xFF;
 795                 (*channel++).hw_value = txpwr >> 8;
 796         }
 797
 798         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
 799                           &priv->txpwr_base);
 800
 801         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 802         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 803         /* 0 means asic B-cut, we should use SW 3 wire
 804          * bit-by-bit banging for radio. 1 means we can use
 805          * USB specific request to write radio registers */
 806         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
 807         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 808         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 809
 810         priv->rf = rtl8187_detect_rf(dev);
 811
 812         err = ieee80211_register_hw(dev);
 813         if (err) {
 814                 printk(KERN_ERR "rtl8187: Cannot register device\n");
 815                 goto err_free_dev;
 816         }
 817
 818         printk(KERN_INFO "%s: hwaddr %s, rtl8187 V%d + %s\n",
 819                wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
 820                priv->asic_rev, priv->rf->name);
 821
 822         return 0;
 823
 824  err_free_dev:
 825         ieee80211_free_hw(dev);
 826         usb_set_intfdata(intf, NULL);
 827         usb_put_dev(udev);
 828         return err;
 829 }
 830
 831 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
 832 {
 833         struct ieee80211_hw *dev = usb_get_intfdata(intf);
 834         struct rtl8187_priv *priv;
 835
 836         if (!dev)
 837                 return;
 838
 839         ieee80211_unregister_hw(dev);
 840
 841         priv = dev->priv;
 842         usb_put_dev(interface_to_usbdev(intf));
 843         ieee80211_free_hw(dev);
 844 }
 845
 846 static struct usb_driver rtl8187_driver = {
 847         .name           = KBUILD_MODNAME,
 848         .id_table       = rtl8187_table,
 849         .probe          = rtl8187_probe,
 850         .disconnect     = rtl8187_disconnect,
 851 };
 852
 853 static int __init rtl8187_init(void)
 854 {
 855         return usb_register(&rtl8187_driver);
 856 }
 857
 858 static void __exit rtl8187_exit(void)
 859 {
 860         usb_deregister(&rtl8187_driver);
 861 }
 862
 863 module_init(rtl8187_init);
 864 module_exit(rtl8187_exit);