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         {}
  42 };
  43
  44 MODULE_DEVICE_TABLE(usb, rtl8187_table);
  45
  46 static void rtl8187_iowrite_async_cb(struct urb *urb)
  47 {
  48         kfree(urb->context);
  49         usb_free_urb(urb);
  50 }
  51
  52 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
  53                                   void *data, u16 len)
  54 {
  55         struct usb_ctrlrequest *dr;
  56         struct urb *urb;
  57         struct rtl8187_async_write_data {
  58                 u8 data[4];
  59                 struct usb_ctrlrequest dr;
  60         } *buf;
  61
  62         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
  63         if (!buf)
  64                 return;
  65
  66         urb = usb_alloc_urb(0, GFP_ATOMIC);
  67         if (!urb) {
  68                 kfree(buf);
  69                 return;
  70         }
  71
  72         dr = &buf->dr;
  73
  74         dr->bRequestType = RTL8187_REQT_WRITE;
  75         dr->bRequest = RTL8187_REQ_SET_REG;
  76         dr->wValue = addr;
  77         dr->wIndex = 0;
  78         dr->wLength = cpu_to_le16(len);
  79
  80         memcpy(buf, data, len);
  81
  82         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
  83                              (unsigned char *)dr, buf, len,
  84                              rtl8187_iowrite_async_cb, buf);
  85         usb_submit_urb(urb, GFP_ATOMIC);
  86 }
  87
  88 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
  89                                            __le32 *addr, u32 val)
  90 {
  91         __le32 buf = cpu_to_le32(val);
  92
  93         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
  94                               &buf, sizeof(buf));
  95 }
  96
  97 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
  98 {
  99         struct rtl8187_priv *priv = dev->priv;
 100
 101         data <<= 8;
 102         data |= addr | 0x80;
 103
 104         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
 105         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
 106         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
 107         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
 108
 109         msleep(1);
 110 }
 111
 112 static void rtl8187_tx_cb(struct urb *urb)
 113 {
 114         struct ieee80211_tx_status status = { {0} };
 115         struct sk_buff *skb = (struct sk_buff *)urb->context;
 116         struct rtl8187_tx_info *info = (struct rtl8187_tx_info *)skb->cb;
 117
 118         usb_free_urb(info->urb);
 119         if (info->control)
 120                 memcpy(&status.control, info->control, sizeof(status.control));
 121         kfree(info->control);
 122         skb_pull(skb, sizeof(struct rtl8187_tx_hdr));
 123         status.flags |= IEEE80211_TX_STATUS_ACK;
 124         ieee80211_tx_status_irqsafe(info->dev, skb, &status);
 125 }
 126
 127 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
 128                       struct ieee80211_tx_control *control)
 129 {
 130         struct rtl8187_priv *priv = dev->priv;
 131         struct rtl8187_tx_hdr *hdr;
 132         struct rtl8187_tx_info *info;
 133         struct urb *urb;
 134         __le16 rts_dur = 0;
 135         u32 flags;
 136
 137         urb = usb_alloc_urb(0, GFP_ATOMIC);
 138         if (!urb) {
 139                 kfree_skb(skb);
 140                 return 0;
 141         }
 142
 143         flags = skb->len;
 144         flags |= RTL8187_TX_FLAG_NO_ENCRYPT;
 145         flags |= control->rts_cts_rate << 19;
 146         flags |= control->tx_rate << 24;
 147         if (ieee80211_get_morefrag((struct ieee80211_hdr *)skb->data))
 148                 flags |= RTL8187_TX_FLAG_MORE_FRAG;
 149         if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
 150                 flags |= RTL8187_TX_FLAG_RTS;
 151                 rts_dur = ieee80211_rts_duration(dev, priv->if_id, skb->len, control);
 152         }
 153         if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
 154                 flags |= RTL8187_TX_FLAG_CTS;
 155
 156         hdr = (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 157         hdr->flags = cpu_to_le32(flags);
 158         hdr->len = 0;
 159         hdr->rts_duration = rts_dur;
 160         hdr->retry = cpu_to_le32(control->retry_limit << 8);
 161
 162         info = (struct rtl8187_tx_info *)skb->cb;
 163         info->control = kmemdup(control, sizeof(*control), GFP_ATOMIC);
 164         info->urb = urb;
 165         info->dev = dev;
 166         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, 2),
 167                           hdr, skb->len, rtl8187_tx_cb, skb);
 168         usb_submit_urb(urb, GFP_ATOMIC);
 169
 170         return 0;
 171 }
 172
 173 static void rtl8187_rx_cb(struct urb *urb)
 174 {
 175         struct sk_buff *skb = (struct sk_buff *)urb->context;
 176         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 177         struct ieee80211_hw *dev = info->dev;
 178         struct rtl8187_priv *priv = dev->priv;
 179         struct rtl8187_rx_hdr *hdr;
 180         struct ieee80211_rx_status rx_status = { 0 };
 181         int rate, signal;
 182         u32 flags;
 183
 184         spin_lock(&priv->rx_queue.lock);
 185         if (skb->next)
 186                 __skb_unlink(skb, &priv->rx_queue);
 187         else {
 188                 spin_unlock(&priv->rx_queue.lock);
 189                 return;
 190         }
 191         spin_unlock(&priv->rx_queue.lock);
 192
 193         if (unlikely(urb->status)) {
 194                 usb_free_urb(urb);
 195                 dev_kfree_skb_irq(skb);
 196                 return;
 197         }
 198
 199         skb_put(skb, urb->actual_length);
 200         hdr = (struct rtl8187_rx_hdr *)(skb_tail_pointer(skb) - sizeof(*hdr));
 201         flags = le32_to_cpu(hdr->flags);
 202         skb_trim(skb, flags & 0x0FFF);
 203
 204         signal = hdr->agc >> 1;
 205         rate = (flags >> 20) & 0xF;
 206         if (rate > 3) { /* OFDM rate */
 207                 if (signal > 90)
 208                         signal = 90;
 209                 else if (signal < 25)
 210                         signal = 25;
 211                 signal = 90 - signal;
 212         } else {        /* CCK rate */
 213                 if (signal > 95)
 214                         signal = 95;
 215                 else if (signal < 30)
 216                         signal = 30;
 217                 signal = 95 - signal;
 218         }
 219
 220         rx_status.antenna = (hdr->signal >> 7) & 1;
 221         rx_status.signal = 64 - min(hdr->noise, (u8)64);
 222         rx_status.ssi = signal;
 223         rx_status.rate = rate;
 224         rx_status.freq = dev->conf.freq;
 225         rx_status.channel = dev->conf.channel;
 226         rx_status.phymode = dev->conf.phymode;
 227         rx_status.mactime = le64_to_cpu(hdr->mac_time);
 228         if (flags & (1 << 13))
 229                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 230         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 231
 232         skb = dev_alloc_skb(RTL8187_MAX_RX);
 233         if (unlikely(!skb)) {
 234                 usb_free_urb(urb);
 235                 /* TODO check rx queue length and refill *somewhere* */
 236                 return;
 237         }
 238
 239         info = (struct rtl8187_rx_info *)skb->cb;
 240         info->urb = urb;
 241         info->dev = dev;
 242         urb->transfer_buffer = skb_tail_pointer(skb);
 243         urb->context = skb;
 244         skb_queue_tail(&priv->rx_queue, skb);
 245
 246         usb_submit_urb(urb, GFP_ATOMIC);
 247 }
 248
 249 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 250 {
 251         struct rtl8187_priv *priv = dev->priv;
 252         struct urb *entry;
 253         struct sk_buff *skb;
 254         struct rtl8187_rx_info *info;
 255
 256         while (skb_queue_len(&priv->rx_queue) < 8) {
 257                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 258                 if (!skb)
 259                         break;
 260                 entry = usb_alloc_urb(0, GFP_KERNEL);
 261                 if (!entry) {
 262                         kfree_skb(skb);
 263                         break;
 264                 }
 265                 usb_fill_bulk_urb(entry, priv->udev,
 266                                   usb_rcvbulkpipe(priv->udev, 1),
 267                                   skb_tail_pointer(skb),
 268                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 269                 info = (struct rtl8187_rx_info *)skb->cb;
 270                 info->urb = entry;
 271                 info->dev = dev;
 272                 skb_queue_tail(&priv->rx_queue, skb);
 273                 usb_submit_urb(entry, GFP_KERNEL);
 274         }
 275
 276         return 0;
 277 }
 278
 279 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 280 {
 281         struct rtl8187_priv *priv = dev->priv;
 282         u8 reg;
 283         int i;
 284
 285         /* reset */
 286         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 287         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 288         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 289         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 290         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 291         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 292         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 293
 294         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 295
 296         msleep(200);
 297         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 298         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 299         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 300         msleep(200);
 301
 302         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 303         reg &= (1 << 1);
 304         reg |= RTL818X_CMD_RESET;
 305         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 306
 307         i = 10;
 308         do {
 309                 msleep(2);
 310                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 311                       RTL818X_CMD_RESET))
 312                         break;
 313         } while (--i);
 314
 315         if (!i) {
 316                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 317                 return -ETIMEDOUT;
 318         }
 319
 320         /* reload registers from eeprom */
 321         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 322
 323         i = 10;
 324         do {
 325                 msleep(4);
 326                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 327                       RTL818X_EEPROM_CMD_CONFIG))
 328                         break;
 329         } while (--i);
 330
 331         if (!i) {
 332                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 333                        wiphy_name(dev->wiphy));
 334                 return -ETIMEDOUT;
 335         }
 336
 337         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 338         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 339         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 340         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 341         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 342         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 343         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 344
 345         /* setup card */
 346         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 347         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 348
 349         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 350         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 351         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 352
 353         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 354
 355         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 356         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 357         reg &= 0x3F;
 358         reg |= 0x80;
 359         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 360
 361         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 362
 363         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 364         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 365         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 366
 367         // TODO: set RESP_RATE and BRSR properly
 368         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 369         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 370
 371         /* host_usb_init */
 372         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 373         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 374         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 375         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 376         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 377         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 378         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 379         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 380         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 381         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 382         msleep(100);
 383
 384         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 385         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 386         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 387         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 388         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 389         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 390         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 391         msleep(100);
 392
 393         priv->rf_init(dev);
 394
 395         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 396         reg = rtl818x_ioread16(priv, &priv->map->PGSELECT) & 0xfffe;
 397         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg | 0x1);
 398         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 399         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 400         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 401         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg);
 402
 403         return 0;
 404 }
 405
 406 static void rtl8187_set_channel(struct ieee80211_hw *dev, int channel)
 407 {
 408         u32 reg;
 409         struct rtl8187_priv *priv = dev->priv;
 410
 411         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 412         /* Enable TX loopback on MAC level to avoid TX during channel
 413          * changes, as this has be seen to causes problems and the
 414          * card will stop work until next reset
 415          */
 416         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 417                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
 418         msleep(10);
 419         rtl8225_rf_set_channel(dev, channel);
 420         msleep(10);
 421         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 422 }
 423
 424 static int rtl8187_start(struct ieee80211_hw *dev)
 425 {
 426         struct rtl8187_priv *priv = dev->priv;
 427         u32 reg;
 428         int ret;
 429
 430         ret = rtl8187_init_hw(dev);
 431         if (ret)
 432                 return ret;
 433
 434         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 435
 436         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 437         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 438
 439         rtl8187_init_urbs(dev);
 440
 441         reg = RTL818X_RX_CONF_ONLYERLPKT |
 442               RTL818X_RX_CONF_RX_AUTORESETPHY |
 443               RTL818X_RX_CONF_BSSID |
 444               RTL818X_RX_CONF_MGMT |
 445               RTL818X_RX_CONF_DATA |
 446               (7 << 13 /* RX FIFO threshold NONE */) |
 447               (7 << 10 /* MAX RX DMA */) |
 448               RTL818X_RX_CONF_BROADCAST |
 449               RTL818X_RX_CONF_NICMAC;
 450
 451         priv->rx_conf = reg;
 452         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 453
 454         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 455         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 456         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 457         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 458
 459         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 460         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 461         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 462         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 463         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 464
 465         reg  = RTL818X_TX_CONF_CW_MIN |
 466                (7 << 21 /* MAX TX DMA */) |
 467                RTL818X_TX_CONF_NO_ICV;
 468         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 469
 470         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 471         reg |= RTL818X_CMD_TX_ENABLE;
 472         reg |= RTL818X_CMD_RX_ENABLE;
 473         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 474
 475         return 0;
 476 }
 477
 478 static void rtl8187_stop(struct ieee80211_hw *dev)
 479 {
 480         struct rtl8187_priv *priv = dev->priv;
 481         struct rtl8187_rx_info *info;
 482         struct sk_buff *skb;
 483         u32 reg;
 484
 485         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 486
 487         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 488         reg &= ~RTL818X_CMD_TX_ENABLE;
 489         reg &= ~RTL818X_CMD_RX_ENABLE;
 490         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 491
 492         rtl8225_rf_stop(dev);
 493
 494         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 495         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 496         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 497         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 498
 499         while ((skb = skb_dequeue(&priv->rx_queue))) {
 500                 info = (struct rtl8187_rx_info *)skb->cb;
 501                 usb_kill_urb(info->urb);
 502                 kfree_skb(skb);
 503         }
 504         return;
 505 }
 506
 507 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 508                                  struct ieee80211_if_init_conf *conf)
 509 {
 510         struct rtl8187_priv *priv = dev->priv;
 511         int i;
 512
 513         if (priv->mode != IEEE80211_IF_TYPE_MNTR)
 514                 return -EOPNOTSUPP;
 515
 516         switch (conf->type) {
 517         case IEEE80211_IF_TYPE_STA:
 518                 priv->mode = conf->type;
 519                 break;
 520         default:
 521                 return -EOPNOTSUPP;
 522         }
 523
 524         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 525         for (i = 0; i < ETH_ALEN; i++)
 526                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
 527                                  ((u8 *)conf->mac_addr)[i]);
 528         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 529
 530         return 0;
 531 }
 532
 533 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
 534                                      struct ieee80211_if_init_conf *conf)
 535 {
 536         struct rtl8187_priv *priv = dev->priv;
 537         priv->mode = IEEE80211_IF_TYPE_MNTR;
 538 }
 539
 540 static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 541 {
 542         struct rtl8187_priv *priv = dev->priv;
 543         rtl8187_set_channel(dev, conf->channel);
 544
 545         rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
 546
 547         if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
 548                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
 549                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
 550                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
 551                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0x73);
 552         } else {
 553                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
 554                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
 555                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
 556                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0xa5);
 557         }
 558
 559         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 560         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
 561         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 562         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
 563         return 0;
 564 }
 565
 566 static int rtl8187_config_interface(struct ieee80211_hw *dev, int if_id,
 567                                     struct ieee80211_if_conf *conf)
 568 {
 569         struct rtl8187_priv *priv = dev->priv;
 570         int i;
 571
 572         priv->if_id = if_id;
 573
 574         for (i = 0; i < ETH_ALEN; i++)
 575                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 576
 577         if (is_valid_ether_addr(conf->bssid))
 578                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 579         else
 580                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 581
 582         return 0;
 583 }
 584
 585 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
 586                                      unsigned int changed_flags,
 587                                      unsigned int *total_flags,
 588                                      int mc_count, struct dev_addr_list *mclist)
 589 {
 590         struct rtl8187_priv *priv = dev->priv;
 591
 592         if (changed_flags & FIF_FCSFAIL)
 593                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
 594         if (changed_flags & FIF_CONTROL)
 595                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
 596         if (changed_flags & FIF_OTHER_BSS)
 597                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
 598         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
 599                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
 600         else
 601                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
 602
 603         *total_flags = 0;
 604
 605         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
 606                 *total_flags |= FIF_FCSFAIL;
 607         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
 608                 *total_flags |= FIF_CONTROL;
 609         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
 610                 *total_flags |= FIF_OTHER_BSS;
 611         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
 612                 *total_flags |= FIF_ALLMULTI;
 613
 614         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
 615 }
 616
 617 static const struct ieee80211_ops rtl8187_ops = {
 618         .tx                     = rtl8187_tx,
 619         .start                  = rtl8187_start,
 620         .stop                   = rtl8187_stop,
 621         .add_interface          = rtl8187_add_interface,
 622         .remove_interface       = rtl8187_remove_interface,
 623         .config                 = rtl8187_config,
 624         .config_interface       = rtl8187_config_interface,
 625         .configure_filter       = rtl8187_configure_filter,
 626 };
 627
 628 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
 629 {
 630         struct ieee80211_hw *dev = eeprom->data;
 631         struct rtl8187_priv *priv = dev->priv;
 632         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 633
 634         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
 635         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
 636         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
 637         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
 638 }
 639
 640 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
 641 {
 642         struct ieee80211_hw *dev = eeprom->data;
 643         struct rtl8187_priv *priv = dev->priv;
 644         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
 645
 646         if (eeprom->reg_data_in)
 647                 reg |= RTL818X_EEPROM_CMD_WRITE;
 648         if (eeprom->reg_data_out)
 649                 reg |= RTL818X_EEPROM_CMD_READ;
 650         if (eeprom->reg_data_clock)
 651                 reg |= RTL818X_EEPROM_CMD_CK;
 652         if (eeprom->reg_chip_select)
 653                 reg |= RTL818X_EEPROM_CMD_CS;
 654
 655         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
 656         udelay(10);
 657 }
 658
 659 static int __devinit rtl8187_probe(struct usb_interface *intf,
 660                                    const struct usb_device_id *id)
 661 {
 662         struct usb_device *udev = interface_to_usbdev(intf);
 663         struct ieee80211_hw *dev;
 664         struct rtl8187_priv *priv;
 665         struct eeprom_93cx6 eeprom;
 666         struct ieee80211_channel *channel;
 667         u16 txpwr, reg;
 668         int err, i;
 669         DECLARE_MAC_BUF(mac);
 670
 671         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
 672         if (!dev) {
 673                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
 674                 return -ENOMEM;
 675         }
 676
 677         priv = dev->priv;
 678
 679         SET_IEEE80211_DEV(dev, &intf->dev);
 680         usb_set_intfdata(intf, dev);
 681         priv->udev = udev;
 682
 683         usb_get_dev(udev);
 684
 685         skb_queue_head_init(&priv->rx_queue);
 686         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 687         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 688         priv->map = (struct rtl818x_csr *)0xFF00;
 689         priv->modes[0].mode = MODE_IEEE80211G;
 690         priv->modes[0].num_rates = ARRAY_SIZE(rtl818x_rates);
 691         priv->modes[0].rates = priv->rates;
 692         priv->modes[0].num_channels = ARRAY_SIZE(rtl818x_channels);
 693         priv->modes[0].channels = priv->channels;
 694         priv->modes[1].mode = MODE_IEEE80211B;
 695         priv->modes[1].num_rates = 4;
 696         priv->modes[1].rates = priv->rates;
 697         priv->modes[1].num_channels = ARRAY_SIZE(rtl818x_channels);
 698         priv->modes[1].channels = priv->channels;
 699         priv->mode = IEEE80211_IF_TYPE_MNTR;
 700         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 701                      IEEE80211_HW_RX_INCLUDES_FCS;
 702         dev->extra_tx_headroom = sizeof(struct rtl8187_tx_hdr);
 703         dev->queues = 1;
 704         dev->max_rssi = 65;
 705         dev->max_signal = 64;
 706
 707         for (i = 0; i < 2; i++)
 708                 if ((err = ieee80211_register_hwmode(dev, &priv->modes[i])))
 709                         goto err_free_dev;
 710
 711         eeprom.data = dev;
 712         eeprom.register_read = rtl8187_eeprom_register_read;
 713         eeprom.register_write = rtl8187_eeprom_register_write;
 714         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
 715                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 716         else
 717                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 718
 719         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 720         udelay(10);
 721
 722         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
 723                                (__le16 __force *)dev->wiphy->perm_addr, 3);
 724         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 725                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
 726                        "generated MAC address\n");
 727                 random_ether_addr(dev->wiphy->perm_addr);
 728         }
 729
 730         channel = priv->channels;
 731         for (i = 0; i < 3; i++) {
 732                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
 733                                   &txpwr);
 734                 (*channel++).val = txpwr & 0xFF;
 735                 (*channel++).val = txpwr >> 8;
 736         }
 737         for (i = 0; i < 2; i++) {
 738                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
 739                                   &txpwr);
 740                 (*channel++).val = txpwr & 0xFF;
 741                 (*channel++).val = txpwr >> 8;
 742         }
 743         for (i = 0; i < 2; i++) {
 744                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6 + i,
 745                                   &txpwr);
 746                 (*channel++).val = txpwr & 0xFF;
 747                 (*channel++).val = txpwr >> 8;
 748         }
 749
 750         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
 751                           &priv->txpwr_base);
 752
 753         reg = rtl818x_ioread16(priv, &priv->map->PGSELECT) & ~1;
 754         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg | 1);
 755         /* 0 means asic B-cut, we should use SW 3 wire
 756          * bit-by-bit banging for radio. 1 means we can use
 757          * USB specific request to write radio registers */
 758         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
 759         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg);
 760         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 761
 762         rtl8225_write(dev, 0, 0x1B7);
 763
 764         if (rtl8225_read(dev, 8) != 0x588 || rtl8225_read(dev, 9) != 0x700)
 765                 priv->rf_init = rtl8225_rf_init;
 766         else
 767                 priv->rf_init = rtl8225z2_rf_init;
 768
 769         rtl8225_write(dev, 0, 0x0B7);
 770
 771         err = ieee80211_register_hw(dev);
 772         if (err) {
 773                 printk(KERN_ERR "rtl8187: Cannot register device\n");
 774                 goto err_free_dev;
 775         }
 776
 777         printk(KERN_INFO "%s: hwaddr %s, rtl8187 V%d + %s\n",
 778                wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
 779                priv->asic_rev, priv->rf_init == rtl8225_rf_init ?
 780                "rtl8225" : "rtl8225z2");
 781
 782         return 0;
 783
 784  err_free_dev:
 785         ieee80211_free_hw(dev);
 786         usb_set_intfdata(intf, NULL);
 787         usb_put_dev(udev);
 788         return err;
 789 }
 790
 791 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
 792 {
 793         struct ieee80211_hw *dev = usb_get_intfdata(intf);
 794         struct rtl8187_priv *priv;
 795
 796         if (!dev)
 797                 return;
 798
 799         ieee80211_unregister_hw(dev);
 800
 801         priv = dev->priv;
 802         usb_put_dev(interface_to_usbdev(intf));
 803         ieee80211_free_hw(dev);
 804 }
 805
 806 static struct usb_driver rtl8187_driver = {
 807         .name           = KBUILD_MODNAME,
 808         .id_table       = rtl8187_table,
 809         .probe          = rtl8187_probe,
 810         .disconnect     = rtl8187_disconnect,
 811 };
 812
 813 static int __init rtl8187_init(void)
 814 {
 815         return usb_register(&rtl8187_driver);
 816 }
 817
 818 static void __exit rtl8187_exit(void)
 819 {
 820         usb_deregister(&rtl8187_driver);
 821 }
 822
 823 module_init(rtl8187_init);
 824 module_exit(rtl8187_exit);