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         {}
  40 };
  41
  42 MODULE_DEVICE_TABLE(usb, rtl8187_table);
  43
  44 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
  45 {
  46         struct rtl8187_priv *priv = dev->priv;
  47
  48         data <<= 8;
  49         data |= addr | 0x80;
  50
  51         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
  52         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
  53         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
  54         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
  55
  56         msleep(1);
  57 }
  58
  59 static void rtl8187_tx_cb(struct urb *urb)
  60 {
  61         struct ieee80211_tx_status status = { {0} };
  62         struct sk_buff *skb = (struct sk_buff *)urb->context;
  63         struct rtl8187_tx_info *info = (struct rtl8187_tx_info *)skb->cb;
  64
  65         usb_free_urb(info->urb);
  66         if (info->control)
  67                 memcpy(&status.control, info->control, sizeof(status.control));
  68         kfree(info->control);
  69         skb_pull(skb, sizeof(struct rtl8187_tx_hdr));
  70         status.flags |= IEEE80211_TX_STATUS_ACK;
  71         ieee80211_tx_status_irqsafe(info->dev, skb, &status);
  72 }
  73
  74 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
  75                       struct ieee80211_tx_control *control)
  76 {
  77         struct rtl8187_priv *priv = dev->priv;
  78         struct rtl8187_tx_hdr *hdr;
  79         struct rtl8187_tx_info *info;
  80         struct urb *urb;
  81         u32 tmp;
  82
  83         urb = usb_alloc_urb(0, GFP_ATOMIC);
  84         if (!urb) {
  85                 kfree_skb(skb);
  86                 return 0;
  87         }
  88
  89         hdr = (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
  90         tmp = skb->len - sizeof(*hdr);
  91         tmp |= RTL8187_TX_FLAG_NO_ENCRYPT;
  92         tmp |= control->rts_cts_rate << 19;
  93         tmp |= control->tx_rate << 24;
  94         if (ieee80211_get_morefrag((struct ieee80211_hdr *)skb))
  95                 tmp |= RTL8187_TX_FLAG_MORE_FRAG;
  96         if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
  97                 tmp |= RTL8187_TX_FLAG_RTS;
  98                 hdr->rts_duration =
  99                         ieee80211_rts_duration(dev, skb->len, control);
 100         }
 101         if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
 102                 tmp |= RTL8187_TX_FLAG_CTS;
 103         hdr->flags = cpu_to_le32(tmp);
 104         hdr->len = 0;
 105         tmp = control->retry_limit << 8;
 106         hdr->retry = cpu_to_le32(tmp);
 107
 108         info = (struct rtl8187_tx_info *)skb->cb;
 109         info->control = kmemdup(control, sizeof(*control), GFP_ATOMIC);
 110         info->urb = urb;
 111         info->dev = dev;
 112         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, 2),
 113                           hdr, skb->len, rtl8187_tx_cb, skb);
 114         usb_submit_urb(urb, GFP_ATOMIC);
 115
 116         return 0;
 117 }
 118
 119 static void rtl8187_rx_cb(struct urb *urb)
 120 {
 121         struct sk_buff *skb = (struct sk_buff *)urb->context;
 122         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 123         struct ieee80211_hw *dev = info->dev;
 124         struct rtl8187_priv *priv = dev->priv;
 125         struct rtl8187_rx_hdr *hdr;
 126         struct ieee80211_rx_status rx_status = { 0 };
 127         int rate, signal;
 128
 129         spin_lock(&priv->rx_queue.lock);
 130         if (skb->next)
 131                 __skb_unlink(skb, &priv->rx_queue);
 132         else {
 133                 spin_unlock(&priv->rx_queue.lock);
 134                 return;
 135         }
 136         spin_unlock(&priv->rx_queue.lock);
 137
 138         if (unlikely(urb->status)) {
 139                 usb_free_urb(urb);
 140                 dev_kfree_skb_irq(skb);
 141                 return;
 142         }
 143
 144         skb_put(skb, urb->actual_length);
 145         hdr = (struct rtl8187_rx_hdr *)(skb_tail_pointer(skb) - sizeof(*hdr));
 146         skb_trim(skb, le16_to_cpu(hdr->len) & 0x0FFF);
 147
 148         signal = hdr->agc >> 1;
 149         rate = (le16_to_cpu(hdr->rate) >> 4) & 0xF;
 150         if (rate > 3) { /* OFDM rate */
 151                 if (signal > 90)
 152                         signal = 90;
 153                 else if (signal < 25)
 154                         signal = 25;
 155                 signal = 90 - signal;
 156         } else {        /* CCK rate */
 157                 if (signal > 95)
 158                         signal = 95;
 159                 else if (signal < 30)
 160                         signal = 30;
 161                 signal = 95 - signal;
 162         }
 163
 164         rx_status.antenna = (hdr->signal >> 7) & 1;
 165         rx_status.signal = 64 - min(hdr->noise, (u8)64);
 166         rx_status.ssi = signal;
 167         rx_status.rate = rate;
 168         rx_status.freq = dev->conf.freq;
 169         rx_status.channel = dev->conf.channel;
 170         rx_status.phymode = dev->conf.phymode;
 171         rx_status.mactime = le64_to_cpu(hdr->mac_time);
 172         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 173
 174         skb = dev_alloc_skb(RTL8187_MAX_RX);
 175         if (unlikely(!skb)) {
 176                 usb_free_urb(urb);
 177                 /* TODO check rx queue length and refill *somewhere* */
 178                 return;
 179         }
 180
 181         info = (struct rtl8187_rx_info *)skb->cb;
 182         info->urb = urb;
 183         info->dev = dev;
 184         urb->transfer_buffer = skb_tail_pointer(skb);
 185         urb->context = skb;
 186         skb_queue_tail(&priv->rx_queue, skb);
 187
 188         usb_submit_urb(urb, GFP_ATOMIC);
 189 }
 190
 191 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 192 {
 193         struct rtl8187_priv *priv = dev->priv;
 194         struct urb *entry;
 195         struct sk_buff *skb;
 196         struct rtl8187_rx_info *info;
 197
 198         while (skb_queue_len(&priv->rx_queue) < 8) {
 199                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 200                 if (!skb)
 201                         break;
 202                 entry = usb_alloc_urb(0, GFP_KERNEL);
 203                 if (!entry) {
 204                         kfree_skb(skb);
 205                         break;
 206                 }
 207                 usb_fill_bulk_urb(entry, priv->udev,
 208                                   usb_rcvbulkpipe(priv->udev, 1),
 209                                   skb_tail_pointer(skb),
 210                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 211                 info = (struct rtl8187_rx_info *)skb->cb;
 212                 info->urb = entry;
 213                 info->dev = dev;
 214                 skb_queue_tail(&priv->rx_queue, skb);
 215                 usb_submit_urb(entry, GFP_KERNEL);
 216         }
 217
 218         return 0;
 219 }
 220
 221 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 222 {
 223         struct rtl8187_priv *priv = dev->priv;
 224         u8 reg;
 225         int i;
 226
 227         /* reset */
 228         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 229         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 230         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 231         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 232         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 233         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 234         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 235
 236         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 237
 238         msleep(200);
 239         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 240         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 241         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 242         msleep(200);
 243
 244         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 245         reg &= (1 << 1);
 246         reg |= RTL818X_CMD_RESET;
 247         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 248
 249         i = 10;
 250         do {
 251                 msleep(2);
 252                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 253                       RTL818X_CMD_RESET))
 254                         break;
 255         } while (--i);
 256
 257         if (!i) {
 258                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 259                 return -ETIMEDOUT;
 260         }
 261
 262         /* reload registers from eeprom */
 263         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 264
 265         i = 10;
 266         do {
 267                 msleep(4);
 268                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 269                       RTL818X_EEPROM_CMD_CONFIG))
 270                         break;
 271         } while (--i);
 272
 273         if (!i) {
 274                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 275                        wiphy_name(dev->wiphy));
 276                 return -ETIMEDOUT;
 277         }
 278
 279         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 280         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 281         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 282         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 283         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 284         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 285         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 286
 287         /* setup card */
 288         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 289         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 290
 291         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 292         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 293         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 294
 295         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 296         for (i = 0; i < ETH_ALEN; i++)
 297                 rtl818x_iowrite8(priv, &priv->map->MAC[i], priv->hwaddr[i]);
 298
 299         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 300         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 301         reg &= 0x3F;
 302         reg |= 0x80;
 303         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 304
 305         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 306
 307         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 308         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 309         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 310
 311         // TODO: set RESP_RATE and BRSR properly
 312         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 313         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 314
 315         /* host_usb_init */
 316         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 317         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 318         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 319         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 320         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 321         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 322         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 323         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 324         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 325         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 326         msleep(100);
 327
 328         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 329         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 330         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 331         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 332         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 333         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 334         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 335         msleep(100);
 336
 337         priv->rf_init(dev);
 338
 339         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 340         reg = rtl818x_ioread16(priv, &priv->map->PGSELECT) & 0xfffe;
 341         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg | 0x1);
 342         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 343         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 344         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 345         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg);
 346
 347         return 0;
 348 }
 349
 350 static void rtl8187_set_channel(struct ieee80211_hw *dev, int channel)
 351 {
 352         u32 reg;
 353         struct rtl8187_priv *priv = dev->priv;
 354
 355         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 356         /* Enable TX loopback on MAC level to avoid TX during channel
 357          * changes, as this has be seen to causes problems and the
 358          * card will stop work until next reset
 359          */
 360         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 361                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
 362         msleep(10);
 363         rtl8225_rf_set_channel(dev, channel);
 364         msleep(10);
 365         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 366 }
 367
 368 static int rtl8187_open(struct ieee80211_hw *dev)
 369 {
 370         struct rtl8187_priv *priv = dev->priv;
 371         u32 reg;
 372         int ret;
 373
 374         ret = rtl8187_init_hw(dev);
 375         if (ret)
 376                 return ret;
 377
 378         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 379
 380         rtl8187_init_urbs(dev);
 381
 382         reg = RTL818X_RX_CONF_ONLYERLPKT |
 383               RTL818X_RX_CONF_RX_AUTORESETPHY |
 384               RTL818X_RX_CONF_BSSID |
 385               RTL818X_RX_CONF_MGMT |
 386               RTL818X_RX_CONF_CTRL |
 387               RTL818X_RX_CONF_DATA |
 388               (7 << 13 /* RX FIFO threshold NONE */) |
 389               (7 << 10 /* MAX RX DMA */) |
 390               RTL818X_RX_CONF_BROADCAST |
 391               RTL818X_RX_CONF_MULTICAST |
 392               RTL818X_RX_CONF_NICMAC;
 393         if (priv->mode == IEEE80211_IF_TYPE_MNTR)
 394                 reg |= RTL818X_RX_CONF_MONITOR;
 395
 396         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 397
 398         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 399         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 400         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 401         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 402
 403         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 404         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 405         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 406         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 407         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 408
 409         reg  = RTL818X_TX_CONF_CW_MIN |
 410                (7 << 21 /* MAX TX DMA */) |
 411                RTL818X_TX_CONF_NO_ICV;
 412         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 413
 414         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 415         reg |= RTL818X_CMD_TX_ENABLE;
 416         reg |= RTL818X_CMD_RX_ENABLE;
 417         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 418
 419         return 0;
 420 }
 421
 422 static int rtl8187_stop(struct ieee80211_hw *dev)
 423 {
 424         struct rtl8187_priv *priv = dev->priv;
 425         struct rtl8187_rx_info *info;
 426         struct sk_buff *skb;
 427         u32 reg;
 428
 429         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 430
 431         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 432         reg &= ~RTL818X_CMD_TX_ENABLE;
 433         reg &= ~RTL818X_CMD_RX_ENABLE;
 434         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 435
 436         rtl8225_rf_stop(dev);
 437
 438         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 439         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 440         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 441         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 442
 443         while ((skb = skb_dequeue(&priv->rx_queue))) {
 444                 info = (struct rtl8187_rx_info *)skb->cb;
 445                 usb_kill_urb(info->urb);
 446                 kfree_skb(skb);
 447         }
 448         return 0;
 449 }
 450
 451 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 452                                  struct ieee80211_if_init_conf *conf)
 453 {
 454         struct rtl8187_priv *priv = dev->priv;
 455
 456         /* NOTE: using IEEE80211_IF_TYPE_MGMT to indicate no mode selected */
 457         if (priv->mode != IEEE80211_IF_TYPE_MGMT)
 458                 return -1;
 459
 460         switch (conf->type) {
 461         case IEEE80211_IF_TYPE_STA:
 462         case IEEE80211_IF_TYPE_MNTR:
 463                 priv->mode = conf->type;
 464                 break;
 465         default:
 466                 return -EOPNOTSUPP;
 467         }
 468
 469         priv->hwaddr = conf->mac_addr;
 470
 471         return 0;
 472 }
 473
 474 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
 475                                      struct ieee80211_if_init_conf *conf)
 476 {
 477         struct rtl8187_priv *priv = dev->priv;
 478         priv->mode = IEEE80211_IF_TYPE_MGMT;
 479 }
 480
 481 static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 482 {
 483         struct rtl8187_priv *priv = dev->priv;
 484         rtl8187_set_channel(dev, conf->channel);
 485
 486         rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
 487
 488         if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
 489                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
 490                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
 491                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
 492                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0x73);
 493         } else {
 494                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
 495                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
 496                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
 497                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0xa5);
 498         }
 499
 500         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 501         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
 502         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 503         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
 504         return 0;
 505 }
 506
 507 static int rtl8187_config_interface(struct ieee80211_hw *dev, int if_id,
 508                                     struct ieee80211_if_conf *conf)
 509 {
 510         struct rtl8187_priv *priv = dev->priv;
 511         int i;
 512
 513         for (i = 0; i < ETH_ALEN; i++)
 514                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 515
 516         if (is_valid_ether_addr(conf->bssid))
 517                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 518         else
 519                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 520
 521         return 0;
 522 }
 523
 524 static const struct ieee80211_ops rtl8187_ops = {
 525         .tx                     = rtl8187_tx,
 526         .open                   = rtl8187_open,
 527         .stop                   = rtl8187_stop,
 528         .add_interface          = rtl8187_add_interface,
 529         .remove_interface       = rtl8187_remove_interface,
 530         .config                 = rtl8187_config,
 531         .config_interface       = rtl8187_config_interface,
 532 };
 533
 534 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
 535 {
 536         struct ieee80211_hw *dev = eeprom->data;
 537         struct rtl8187_priv *priv = dev->priv;
 538         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 539
 540         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
 541         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
 542         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
 543         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
 544 }
 545
 546 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
 547 {
 548         struct ieee80211_hw *dev = eeprom->data;
 549         struct rtl8187_priv *priv = dev->priv;
 550         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
 551
 552         if (eeprom->reg_data_in)
 553                 reg |= RTL818X_EEPROM_CMD_WRITE;
 554         if (eeprom->reg_data_out)
 555                 reg |= RTL818X_EEPROM_CMD_READ;
 556         if (eeprom->reg_data_clock)
 557                 reg |= RTL818X_EEPROM_CMD_CK;
 558         if (eeprom->reg_chip_select)
 559                 reg |= RTL818X_EEPROM_CMD_CS;
 560
 561         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
 562         udelay(10);
 563 }
 564
 565 static int __devinit rtl8187_probe(struct usb_interface *intf,
 566                                    const struct usb_device_id *id)
 567 {
 568         struct usb_device *udev = interface_to_usbdev(intf);
 569         struct ieee80211_hw *dev;
 570         struct rtl8187_priv *priv;
 571         struct eeprom_93cx6 eeprom;
 572         struct ieee80211_channel *channel;
 573         u16 txpwr, reg;
 574         int err, i;
 575
 576         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
 577         if (!dev) {
 578                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
 579                 return -ENOMEM;
 580         }
 581
 582         priv = dev->priv;
 583
 584         SET_IEEE80211_DEV(dev, &intf->dev);
 585         usb_set_intfdata(intf, dev);
 586         priv->udev = udev;
 587
 588         usb_get_dev(udev);
 589
 590         skb_queue_head_init(&priv->rx_queue);
 591         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 592         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 593         priv->map = (struct rtl818x_csr *)0xFF00;
 594         priv->modes[0].mode = MODE_IEEE80211G;
 595         priv->modes[0].num_rates = ARRAY_SIZE(rtl818x_rates);
 596         priv->modes[0].rates = priv->rates;
 597         priv->modes[0].num_channels = ARRAY_SIZE(rtl818x_channels);
 598         priv->modes[0].channels = priv->channels;
 599         priv->modes[1].mode = MODE_IEEE80211B;
 600         priv->modes[1].num_rates = 4;
 601         priv->modes[1].rates = priv->rates;
 602         priv->modes[1].num_channels = ARRAY_SIZE(rtl818x_channels);
 603         priv->modes[1].channels = priv->channels;
 604         priv->mode = IEEE80211_IF_TYPE_MGMT;
 605         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 606                      IEEE80211_HW_RX_INCLUDES_FCS |
 607                      IEEE80211_HW_WEP_INCLUDE_IV |
 608                      IEEE80211_HW_DATA_NULLFUNC_ACK;
 609         dev->extra_tx_headroom = sizeof(struct rtl8187_tx_hdr);
 610         dev->queues = 1;
 611         dev->max_rssi = 65;
 612         dev->max_signal = 64;
 613
 614         for (i = 0; i < 2; i++)
 615                 if ((err = ieee80211_register_hwmode(dev, &priv->modes[i])))
 616                         goto err_free_dev;
 617
 618         eeprom.data = dev;
 619         eeprom.register_read = rtl8187_eeprom_register_read;
 620         eeprom.register_write = rtl8187_eeprom_register_write;
 621         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
 622                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 623         else
 624                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 625
 626         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 627         udelay(10);
 628
 629         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
 630                                (__le16 __force *)dev->wiphy->perm_addr, 3);
 631         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 632                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
 633                        "generated MAC address\n");
 634                 random_ether_addr(dev->wiphy->perm_addr);
 635         }
 636
 637         channel = priv->channels;
 638         for (i = 0; i < 3; i++) {
 639                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
 640                                   &txpwr);
 641                 (*channel++).val = txpwr & 0xFF;
 642                 (*channel++).val = txpwr >> 8;
 643         }
 644         for (i = 0; i < 2; i++) {
 645                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
 646                                   &txpwr);
 647                 (*channel++).val = txpwr & 0xFF;
 648                 (*channel++).val = txpwr >> 8;
 649         }
 650         for (i = 0; i < 2; i++) {
 651                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6 + i,
 652                                   &txpwr);
 653                 (*channel++).val = txpwr & 0xFF;
 654                 (*channel++).val = txpwr >> 8;
 655         }
 656
 657         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
 658                           &priv->txpwr_base);
 659
 660         reg = rtl818x_ioread16(priv, &priv->map->PGSELECT) & ~1;
 661         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg | 1);
 662         /* 0 means asic B-cut, we should use SW 3 wire
 663          * bit-by-bit banging for radio. 1 means we can use
 664          * USB specific request to write radio registers */
 665         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
 666         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg);
 667         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 668
 669         rtl8225_write(dev, 0, 0x1B7);
 670
 671         if (rtl8225_read(dev, 8) != 0x588 || rtl8225_read(dev, 9) != 0x700)
 672                 priv->rf_init = rtl8225_rf_init;
 673         else
 674                 priv->rf_init = rtl8225z2_rf_init;
 675
 676         rtl8225_write(dev, 0, 0x0B7);
 677
 678         err = ieee80211_register_hw(dev);
 679         if (err) {
 680                 printk(KERN_ERR "rtl8187: Cannot register device\n");
 681                 goto err_free_dev;
 682         }
 683
 684         printk(KERN_INFO "%s: hwaddr " MAC_FMT ", rtl8187 V%d + %s\n",
 685                wiphy_name(dev->wiphy), MAC_ARG(dev->wiphy->perm_addr),
 686                priv->asic_rev, priv->rf_init == rtl8225_rf_init ?
 687                "rtl8225" : "rtl8225z2");
 688
 689         return 0;
 690
 691  err_free_dev:
 692         ieee80211_free_hw(dev);
 693         usb_set_intfdata(intf, NULL);
 694         usb_put_dev(udev);
 695         return err;
 696 }
 697
 698 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
 699 {
 700         struct ieee80211_hw *dev = usb_get_intfdata(intf);
 701         struct rtl8187_priv *priv;
 702
 703         if (!dev)
 704                 return;
 705
 706         ieee80211_unregister_hw(dev);
 707
 708         priv = dev->priv;
 709         usb_put_dev(interface_to_usbdev(intf));
 710         ieee80211_free_hw(dev);
 711 }
 712
 713 static struct usb_driver rtl8187_driver = {
 714         .name           = KBUILD_MODNAME,
 715         .id_table       = rtl8187_table,
 716         .probe          = rtl8187_probe,
 717         .disconnect     = rtl8187_disconnect,
 718 };
 719
 720 static int __init rtl8187_init(void)
 721 {
 722         return usb_register(&rtl8187_driver);
 723 }
 724
 725 static void __exit rtl8187_exit(void)
 726 {
 727         usb_deregister(&rtl8187_driver);
 728 }
 729
 730 module_init(rtl8187_init);
 731 module_exit(rtl8187_exit);