git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/rtl8187_dev.c

   1 /*
   2  * Linux device driver for RTL8187
   3  *
   4  * Copyright 2007 Michael Wu <flamingice@sourmilk.net>
   5  * Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
   6  *
   7  * Based on the r8187 driver, which is:
   8  * Copyright 2005 Andrea Merello <andreamrl@tiscali.it>, et al.
   9  *
  10  * Magic delays and register offsets below are taken from the original
  11  * r8187 driver sources.  Thanks to Realtek for their support!
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License version 2 as
  15  * published by the Free Software Foundation.
  16  */
  17
  18 #include <linux/init.h>
  19 #include <linux/usb.h>
  20 #include <linux/delay.h>
  21 #include <linux/etherdevice.h>
  22 #include <linux/eeprom_93cx6.h>
  23 #include <net/mac80211.h>
  24
  25 #include "rtl8187.h"
  26 #include "rtl8187_rtl8225.h"
  27
  28 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  29 MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>");
  30 MODULE_DESCRIPTION("RTL8187 USB wireless driver");
  31 MODULE_LICENSE("GPL");
  32
  33 static struct usb_device_id rtl8187_table[] __devinitdata = {
  34         /* Realtek */
  35         {USB_DEVICE(0x0bda, 0x8187)},
  36         /* Netgear */
  37         {USB_DEVICE(0x0846, 0x6100)},
  38         {USB_DEVICE(0x0846, 0x6a00)},
  39         /* HP */
  40         {USB_DEVICE(0x03f0, 0xca02)},
  41         /* Sitecom */
  42         {USB_DEVICE(0x0df6, 0x000d)},
  43         {}
  44 };
  45
  46 MODULE_DEVICE_TABLE(usb, rtl8187_table);
  47
  48 static void rtl8187_iowrite_async_cb(struct urb *urb)
  49 {
  50         kfree(urb->context);
  51         usb_free_urb(urb);
  52 }
  53
  54 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
  55                                   void *data, u16 len)
  56 {
  57         struct usb_ctrlrequest *dr;
  58         struct urb *urb;
  59         struct rtl8187_async_write_data {
  60                 u8 data[4];
  61                 struct usb_ctrlrequest dr;
  62         } *buf;
  63
  64         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
  65         if (!buf)
  66                 return;
  67
  68         urb = usb_alloc_urb(0, GFP_ATOMIC);
  69         if (!urb) {
  70                 kfree(buf);
  71                 return;
  72         }
  73
  74         dr = &buf->dr;
  75
  76         dr->bRequestType = RTL8187_REQT_WRITE;
  77         dr->bRequest = RTL8187_REQ_SET_REG;
  78         dr->wValue = addr;
  79         dr->wIndex = 0;
  80         dr->wLength = cpu_to_le16(len);
  81
  82         memcpy(buf, data, len);
  83
  84         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
  85                              (unsigned char *)dr, buf, len,
  86                              rtl8187_iowrite_async_cb, buf);
  87         usb_submit_urb(urb, GFP_ATOMIC);
  88 }
  89
  90 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
  91                                            __le32 *addr, u32 val)
  92 {
  93         __le32 buf = cpu_to_le32(val);
  94
  95         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
  96                               &buf, sizeof(buf));
  97 }
  98
  99 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
 100 {
 101         struct rtl8187_priv *priv = dev->priv;
 102
 103         data <<= 8;
 104         data |= addr | 0x80;
 105
 106         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
 107         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
 108         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
 109         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
 110
 111         msleep(1);
 112 }
 113
 114 static void rtl8187_tx_cb(struct urb *urb)
 115 {
 116         struct ieee80211_tx_status status;
 117         struct sk_buff *skb = (struct sk_buff *)urb->context;
 118         struct rtl8187_tx_info *info = (struct rtl8187_tx_info *)skb->cb;
 119
 120         memset(&status, 0, sizeof(status));
 121
 122         usb_free_urb(info->urb);
 123         if (info->control)
 124                 memcpy(&status.control, info->control, sizeof(status.control));
 125         kfree(info->control);
 126         skb_pull(skb, sizeof(struct rtl8187_tx_hdr));
 127         status.flags |= IEEE80211_TX_STATUS_ACK;
 128         ieee80211_tx_status_irqsafe(info->dev, skb, &status);
 129 }
 130
 131 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
 132                       struct ieee80211_tx_control *control)
 133 {
 134         struct rtl8187_priv *priv = dev->priv;
 135         struct rtl8187_tx_hdr *hdr;
 136         struct rtl8187_tx_info *info;
 137         struct urb *urb;
 138         __le16 rts_dur = 0;
 139         u32 flags;
 140
 141         urb = usb_alloc_urb(0, GFP_ATOMIC);
 142         if (!urb) {
 143                 kfree_skb(skb);
 144                 return 0;
 145         }
 146
 147         flags = skb->len;
 148         flags |= RTL8187_TX_FLAG_NO_ENCRYPT;
 149         flags |= control->rts_cts_rate << 19;
 150         flags |= control->tx_rate << 24;
 151         if (ieee80211_get_morefrag((struct ieee80211_hdr *)skb->data))
 152                 flags |= RTL8187_TX_FLAG_MORE_FRAG;
 153         if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
 154                 flags |= RTL8187_TX_FLAG_RTS;
 155                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 156                                                  skb->len, control);
 157         }
 158         if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
 159                 flags |= RTL8187_TX_FLAG_CTS;
 160
 161         hdr = (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 162         hdr->flags = cpu_to_le32(flags);
 163         hdr->len = 0;
 164         hdr->rts_duration = rts_dur;
 165         hdr->retry = cpu_to_le32(control->retry_limit << 8);
 166
 167         info = (struct rtl8187_tx_info *)skb->cb;
 168         info->control = kmemdup(control, sizeof(*control), GFP_ATOMIC);
 169         info->urb = urb;
 170         info->dev = dev;
 171         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, 2),
 172                           hdr, skb->len, rtl8187_tx_cb, skb);
 173         usb_submit_urb(urb, GFP_ATOMIC);
 174
 175         return 0;
 176 }
 177
 178 static void rtl8187_rx_cb(struct urb *urb)
 179 {
 180         struct sk_buff *skb = (struct sk_buff *)urb->context;
 181         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 182         struct ieee80211_hw *dev = info->dev;
 183         struct rtl8187_priv *priv = dev->priv;
 184         struct rtl8187_rx_hdr *hdr;
 185         struct ieee80211_rx_status rx_status = { 0 };
 186         int rate, signal;
 187         u32 flags;
 188
 189         spin_lock(&priv->rx_queue.lock);
 190         if (skb->next)
 191                 __skb_unlink(skb, &priv->rx_queue);
 192         else {
 193                 spin_unlock(&priv->rx_queue.lock);
 194                 return;
 195         }
 196         spin_unlock(&priv->rx_queue.lock);
 197
 198         if (unlikely(urb->status)) {
 199                 usb_free_urb(urb);
 200                 dev_kfree_skb_irq(skb);
 201                 return;
 202         }
 203
 204         skb_put(skb, urb->actual_length);
 205         hdr = (struct rtl8187_rx_hdr *)(skb_tail_pointer(skb) - sizeof(*hdr));
 206         flags = le32_to_cpu(hdr->flags);
 207         skb_trim(skb, flags & 0x0FFF);
 208
 209         signal = hdr->agc >> 1;
 210         rate = (flags >> 20) & 0xF;
 211         if (rate > 3) { /* OFDM rate */
 212                 if (signal > 90)
 213                         signal = 90;
 214                 else if (signal < 25)
 215                         signal = 25;
 216                 signal = 90 - signal;
 217         } else {        /* CCK rate */
 218                 if (signal > 95)
 219                         signal = 95;
 220                 else if (signal < 30)
 221                         signal = 30;
 222                 signal = 95 - signal;
 223         }
 224
 225         rx_status.antenna = (hdr->signal >> 7) & 1;
 226         rx_status.signal = 64 - min(hdr->noise, (u8)64);
 227         rx_status.ssi = signal;
 228         rx_status.rate = rate;
 229         rx_status.freq = dev->conf.freq;
 230         rx_status.channel = dev->conf.channel;
 231         rx_status.phymode = dev->conf.phymode;
 232         rx_status.mactime = le64_to_cpu(hdr->mac_time);
 233         rx_status.flag |= RX_FLAG_TSFT;
 234         if (flags & (1 << 13))
 235                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 236         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 237
 238         skb = dev_alloc_skb(RTL8187_MAX_RX);
 239         if (unlikely(!skb)) {
 240                 usb_free_urb(urb);
 241                 /* TODO check rx queue length and refill *somewhere* */
 242                 return;
 243         }
 244
 245         info = (struct rtl8187_rx_info *)skb->cb;
 246         info->urb = urb;
 247         info->dev = dev;
 248         urb->transfer_buffer = skb_tail_pointer(skb);
 249         urb->context = skb;
 250         skb_queue_tail(&priv->rx_queue, skb);
 251
 252         usb_submit_urb(urb, GFP_ATOMIC);
 253 }
 254
 255 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 256 {
 257         struct rtl8187_priv *priv = dev->priv;
 258         struct urb *entry;
 259         struct sk_buff *skb;
 260         struct rtl8187_rx_info *info;
 261
 262         while (skb_queue_len(&priv->rx_queue) < 8) {
 263                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 264                 if (!skb)
 265                         break;
 266                 entry = usb_alloc_urb(0, GFP_KERNEL);
 267                 if (!entry) {
 268                         kfree_skb(skb);
 269                         break;
 270                 }
 271                 usb_fill_bulk_urb(entry, priv->udev,
 272                                   usb_rcvbulkpipe(priv->udev, 1),
 273                                   skb_tail_pointer(skb),
 274                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 275                 info = (struct rtl8187_rx_info *)skb->cb;
 276                 info->urb = entry;
 277                 info->dev = dev;
 278                 skb_queue_tail(&priv->rx_queue, skb);
 279                 usb_submit_urb(entry, GFP_KERNEL);
 280         }
 281
 282         return 0;
 283 }
 284
 285 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 286 {
 287         struct rtl8187_priv *priv = dev->priv;
 288         u8 reg;
 289         int i;
 290
 291         /* reset */
 292         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 293         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 294         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 295         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 296         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 297         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 298         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 299
 300         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 301
 302         msleep(200);
 303         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 304         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 305         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 306         msleep(200);
 307
 308         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 309         reg &= (1 << 1);
 310         reg |= RTL818X_CMD_RESET;
 311         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 312
 313         i = 10;
 314         do {
 315                 msleep(2);
 316                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 317                       RTL818X_CMD_RESET))
 318                         break;
 319         } while (--i);
 320
 321         if (!i) {
 322                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 323                 return -ETIMEDOUT;
 324         }
 325
 326         /* reload registers from eeprom */
 327         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 328
 329         i = 10;
 330         do {
 331                 msleep(4);
 332                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 333                       RTL818X_EEPROM_CMD_CONFIG))
 334                         break;
 335         } while (--i);
 336
 337         if (!i) {
 338                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 339                        wiphy_name(dev->wiphy));
 340                 return -ETIMEDOUT;
 341         }
 342
 343         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 344         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 345         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 346         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 347         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 348         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 349         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 350
 351         /* setup card */
 352         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 353         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 354
 355         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 356         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 357         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 358
 359         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 360
 361         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 362         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 363         reg &= 0x3F;
 364         reg |= 0x80;
 365         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 366
 367         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 368
 369         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 370         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 371         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 372
 373         // TODO: set RESP_RATE and BRSR properly
 374         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 375         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 376
 377         /* host_usb_init */
 378         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 379         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 380         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 381         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 382         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 383         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 384         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 385         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 386         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 387         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 388         msleep(100);
 389
 390         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 391         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 392         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 393         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 394         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 395         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 396         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 397         msleep(100);
 398
 399         priv->rf->init(dev);
 400
 401         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 402         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 403         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 404         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 405         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 406         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 407         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 408
 409         return 0;
 410 }
 411
 412 static int rtl8187_start(struct ieee80211_hw *dev)
 413 {
 414         struct rtl8187_priv *priv = dev->priv;
 415         u32 reg;
 416         int ret;
 417
 418         ret = rtl8187_init_hw(dev);
 419         if (ret)
 420                 return ret;
 421
 422         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 423
 424         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 425         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 426
 427         rtl8187_init_urbs(dev);
 428
 429         reg = RTL818X_RX_CONF_ONLYERLPKT |
 430               RTL818X_RX_CONF_RX_AUTORESETPHY |
 431               RTL818X_RX_CONF_BSSID |
 432               RTL818X_RX_CONF_MGMT |
 433               RTL818X_RX_CONF_DATA |
 434               (7 << 13 /* RX FIFO threshold NONE */) |
 435               (7 << 10 /* MAX RX DMA */) |
 436               RTL818X_RX_CONF_BROADCAST |
 437               RTL818X_RX_CONF_NICMAC;
 438
 439         priv->rx_conf = reg;
 440         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 441
 442         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 443         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 444         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 445         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 446
 447         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 448         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 449         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 450         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 451         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 452
 453         reg  = RTL818X_TX_CONF_CW_MIN |
 454                (7 << 21 /* MAX TX DMA */) |
 455                RTL818X_TX_CONF_NO_ICV;
 456         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 457
 458         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 459         reg |= RTL818X_CMD_TX_ENABLE;
 460         reg |= RTL818X_CMD_RX_ENABLE;
 461         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 462
 463         return 0;
 464 }
 465
 466 static void rtl8187_stop(struct ieee80211_hw *dev)
 467 {
 468         struct rtl8187_priv *priv = dev->priv;
 469         struct rtl8187_rx_info *info;
 470         struct sk_buff *skb;
 471         u32 reg;
 472
 473         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 474
 475         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 476         reg &= ~RTL818X_CMD_TX_ENABLE;
 477         reg &= ~RTL818X_CMD_RX_ENABLE;
 478         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 479
 480         priv->rf->stop(dev);
 481
 482         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 483         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 484         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 485         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 486
 487         while ((skb = skb_dequeue(&priv->rx_queue))) {
 488                 info = (struct rtl8187_rx_info *)skb->cb;
 489                 usb_kill_urb(info->urb);
 490                 kfree_skb(skb);
 491         }
 492         return;
 493 }
 494
 495 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 496                                  struct ieee80211_if_init_conf *conf)
 497 {
 498         struct rtl8187_priv *priv = dev->priv;
 499         int i;
 500
 501         if (priv->mode != IEEE80211_IF_TYPE_MNTR)
 502                 return -EOPNOTSUPP;
 503
 504         switch (conf->type) {
 505         case IEEE80211_IF_TYPE_STA:
 506                 priv->mode = conf->type;
 507                 break;
 508         default:
 509                 return -EOPNOTSUPP;
 510         }
 511
 512         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 513         for (i = 0; i < ETH_ALEN; i++)
 514                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
 515                                  ((u8 *)conf->mac_addr)[i]);
 516         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 517
 518         return 0;
 519 }
 520
 521 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
 522                                      struct ieee80211_if_init_conf *conf)
 523 {
 524         struct rtl8187_priv *priv = dev->priv;
 525         priv->mode = IEEE80211_IF_TYPE_MNTR;
 526 }
 527
 528 static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 529 {
 530         struct rtl8187_priv *priv = dev->priv;
 531         u32 reg;
 532
 533         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 534         /* Enable TX loopback on MAC level to avoid TX during channel
 535          * changes, as this has be seen to causes problems and the
 536          * card will stop work until next reset
 537          */
 538         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 539                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
 540         msleep(10);
 541         priv->rf->set_chan(dev, conf);
 542         msleep(10);
 543         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 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,
 567                                     struct ieee80211_vif *vif,
 568                                     struct ieee80211_if_conf *conf)
 569 {
 570         struct rtl8187_priv *priv = dev->priv;
 571         int i;
 572
 573         for (i = 0; i < ETH_ALEN; i++)
 574                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 575
 576         if (is_valid_ether_addr(conf->bssid))
 577                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 578         else
 579                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 580
 581         return 0;
 582 }
 583
 584 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
 585                                      unsigned int changed_flags,
 586                                      unsigned int *total_flags,
 587                                      int mc_count, struct dev_addr_list *mclist)
 588 {
 589         struct rtl8187_priv *priv = dev->priv;
 590
 591         if (changed_flags & FIF_FCSFAIL)
 592                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
 593         if (changed_flags & FIF_CONTROL)
 594                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
 595         if (changed_flags & FIF_OTHER_BSS)
 596                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
 597         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
 598                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
 599         else
 600                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
 601
 602         *total_flags = 0;
 603
 604         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
 605                 *total_flags |= FIF_FCSFAIL;
 606         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
 607                 *total_flags |= FIF_CONTROL;
 608         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
 609                 *total_flags |= FIF_OTHER_BSS;
 610         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
 611                 *total_flags |= FIF_ALLMULTI;
 612
 613         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
 614 }
 615
 616 static const struct ieee80211_ops rtl8187_ops = {
 617         .tx                     = rtl8187_tx,
 618         .start                  = rtl8187_start,
 619         .stop                   = rtl8187_stop,
 620         .add_interface          = rtl8187_add_interface,
 621         .remove_interface       = rtl8187_remove_interface,
 622         .config                 = rtl8187_config,
 623         .config_interface       = rtl8187_config_interface,
 624         .configure_filter       = rtl8187_configure_filter,
 625 };
 626
 627 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
 628 {
 629         struct ieee80211_hw *dev = eeprom->data;
 630         struct rtl8187_priv *priv = dev->priv;
 631         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 632
 633         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
 634         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
 635         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
 636         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
 637 }
 638
 639 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
 640 {
 641         struct ieee80211_hw *dev = eeprom->data;
 642         struct rtl8187_priv *priv = dev->priv;
 643         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
 644
 645         if (eeprom->reg_data_in)
 646                 reg |= RTL818X_EEPROM_CMD_WRITE;
 647         if (eeprom->reg_data_out)
 648                 reg |= RTL818X_EEPROM_CMD_READ;
 649         if (eeprom->reg_data_clock)
 650                 reg |= RTL818X_EEPROM_CMD_CK;
 651         if (eeprom->reg_chip_select)
 652                 reg |= RTL818X_EEPROM_CMD_CS;
 653
 654         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
 655         udelay(10);
 656 }
 657
 658 static int __devinit rtl8187_probe(struct usb_interface *intf,
 659                                    const struct usb_device_id *id)
 660 {
 661         struct usb_device *udev = interface_to_usbdev(intf);
 662         struct ieee80211_hw *dev;
 663         struct rtl8187_priv *priv;
 664         struct eeprom_93cx6 eeprom;
 665         struct ieee80211_channel *channel;
 666         u16 txpwr, reg;
 667         int err, i;
 668         DECLARE_MAC_BUF(mac);
 669
 670         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
 671         if (!dev) {
 672                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
 673                 return -ENOMEM;
 674         }
 675
 676         priv = dev->priv;
 677
 678         SET_IEEE80211_DEV(dev, &intf->dev);
 679         usb_set_intfdata(intf, dev);
 680         priv->udev = udev;
 681
 682         usb_get_dev(udev);
 683
 684         skb_queue_head_init(&priv->rx_queue);
 685         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 686         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 687         priv->map = (struct rtl818x_csr *)0xFF00;
 688         priv->modes[0].mode = MODE_IEEE80211G;
 689         priv->modes[0].num_rates = ARRAY_SIZE(rtl818x_rates);
 690         priv->modes[0].rates = priv->rates;
 691         priv->modes[0].num_channels = ARRAY_SIZE(rtl818x_channels);
 692         priv->modes[0].channels = priv->channels;
 693         priv->modes[1].mode = MODE_IEEE80211B;
 694         priv->modes[1].num_rates = 4;
 695         priv->modes[1].rates = priv->rates;
 696         priv->modes[1].num_channels = ARRAY_SIZE(rtl818x_channels);
 697         priv->modes[1].channels = priv->channels;
 698         priv->mode = IEEE80211_IF_TYPE_MNTR;
 699         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 700                      IEEE80211_HW_RX_INCLUDES_FCS;
 701         dev->extra_tx_headroom = sizeof(struct rtl8187_tx_hdr);
 702         dev->queues = 1;
 703         dev->max_rssi = 65;
 704         dev->max_signal = 64;
 705
 706         for (i = 0; i < 2; i++)
 707                 if ((err = ieee80211_register_hwmode(dev, &priv->modes[i])))
 708                         goto err_free_dev;
 709
 710         eeprom.data = dev;
 711         eeprom.register_read = rtl8187_eeprom_register_read;
 712         eeprom.register_write = rtl8187_eeprom_register_write;
 713         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
 714                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 715         else
 716                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 717
 718         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 719         udelay(10);
 720
 721         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
 722                                (__le16 __force *)dev->wiphy->perm_addr, 3);
 723         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 724                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
 725                        "generated MAC address\n");
 726                 random_ether_addr(dev->wiphy->perm_addr);
 727         }
 728
 729         channel = priv->channels;
 730         for (i = 0; i < 3; i++) {
 731                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
 732                                   &txpwr);
 733                 (*channel++).val = txpwr & 0xFF;
 734                 (*channel++).val = txpwr >> 8;
 735         }
 736         for (i = 0; i < 2; i++) {
 737                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
 738                                   &txpwr);
 739                 (*channel++).val = txpwr & 0xFF;
 740                 (*channel++).val = txpwr >> 8;
 741         }
 742         for (i = 0; i < 2; i++) {
 743                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6 + i,
 744                                   &txpwr);
 745                 (*channel++).val = txpwr & 0xFF;
 746                 (*channel++).val = txpwr >> 8;
 747         }
 748
 749         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
 750                           &priv->txpwr_base);
 751
 752         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 753         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 754         /* 0 means asic B-cut, we should use SW 3 wire
 755          * bit-by-bit banging for radio. 1 means we can use
 756          * USB specific request to write radio registers */
 757         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
 758         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 759         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 760
 761         priv->rf = rtl8187_detect_rf(dev);
 762
 763         err = ieee80211_register_hw(dev);
 764         if (err) {
 765                 printk(KERN_ERR "rtl8187: Cannot register device\n");
 766                 goto err_free_dev;
 767         }
 768
 769         printk(KERN_INFO "%s: hwaddr %s, rtl8187 V%d + %s\n",
 770                wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
 771                priv->asic_rev, priv->rf->name);
 772
 773         return 0;
 774
 775  err_free_dev:
 776         ieee80211_free_hw(dev);
 777         usb_set_intfdata(intf, NULL);
 778         usb_put_dev(udev);
 779         return err;
 780 }
 781
 782 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
 783 {
 784         struct ieee80211_hw *dev = usb_get_intfdata(intf);
 785         struct rtl8187_priv *priv;
 786
 787         if (!dev)
 788                 return;
 789
 790         ieee80211_unregister_hw(dev);
 791
 792         priv = dev->priv;
 793         usb_put_dev(interface_to_usbdev(intf));
 794         ieee80211_free_hw(dev);
 795 }
 796
 797 static struct usb_driver rtl8187_driver = {
 798         .name           = KBUILD_MODNAME,
 799         .id_table       = rtl8187_table,
 800         .probe          = rtl8187_probe,
 801         .disconnect     = rtl8187_disconnect,
 802 };
 803
 804 static int __init rtl8187_init(void)
 805 {
 806         return usb_register(&rtl8187_driver);
 807 }
 808
 809 static void __exit rtl8187_exit(void)
 810 {
 811         usb_deregister(&rtl8187_driver);
 812 }
 813
 814 module_init(rtl8187_init);
 815 module_exit(rtl8187_exit);