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