drivers/net/wireless/rtl8187_dev.c

   1 /*
   2  * Linux device driver for RTL8187
   3  *
   4  * Copyright 2007 Michael Wu <flamingice@sourmilk.net>
   5  * Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
   6  *
   7  * Based on the r8187 driver, which is:
   8  * Copyright 2005 Andrea Merello <andreamrl@tiscali.it>, et al.
   9  *
  10  * Magic delays and register offsets below are taken from the original
  11  * r8187 driver sources.  Thanks to Realtek for their support!
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License version 2 as
  15  * published by the Free Software Foundation.
  16  */
  17
  18 #include <linux/init.h>
  19 #include <linux/usb.h>
  20 #include <linux/delay.h>
  21 #include <linux/etherdevice.h>
  22 #include <linux/eeprom_93cx6.h>
  23 #include <net/mac80211.h>
  24
  25 #include "rtl8187.h"
  26 #include "rtl8187_rtl8225.h"
  27
  28 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  29 MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>");
  30 MODULE_DESCRIPTION("RTL8187 USB wireless driver");
  31 MODULE_LICENSE("GPL");
  32
  33 static struct usb_device_id rtl8187_table[] __devinitdata = {
  34         /* Realtek */
  35         {USB_DEVICE(0x0bda, 0x8187)},
  36         /* Netgear */
  37         {USB_DEVICE(0x0846, 0x6100)},
  38         {USB_DEVICE(0x0846, 0x6a00)},
  39         /* HP */
  40         {USB_DEVICE(0x03f0, 0xca02)},
  41         /* Sitecom */
  42         {USB_DEVICE(0x0df6, 0x000d)},
  43         {}
  44 };
  45
  46 MODULE_DEVICE_TABLE(usb, rtl8187_table);
  47
  48 static const struct ieee80211_rate rtl818x_rates[] = {
  49         { .bitrate = 10, .hw_value = 0, },
  50         { .bitrate = 20, .hw_value = 1, },
  51         { .bitrate = 55, .hw_value = 2, },
  52         { .bitrate = 110, .hw_value = 3, },
  53         { .bitrate = 60, .hw_value = 4, },
  54         { .bitrate = 90, .hw_value = 5, },
  55         { .bitrate = 120, .hw_value = 6, },
  56         { .bitrate = 180, .hw_value = 7, },
  57         { .bitrate = 240, .hw_value = 8, },
  58         { .bitrate = 360, .hw_value = 9, },
  59         { .bitrate = 480, .hw_value = 10, },
  60         { .bitrate = 540, .hw_value = 11, },
  61 };
  62
  63 static const struct ieee80211_channel rtl818x_channels[] = {
  64         { .center_freq = 2412 },
  65         { .center_freq = 2417 },
  66         { .center_freq = 2422 },
  67         { .center_freq = 2427 },
  68         { .center_freq = 2432 },
  69         { .center_freq = 2437 },
  70         { .center_freq = 2442 },
  71         { .center_freq = 2447 },
  72         { .center_freq = 2452 },
  73         { .center_freq = 2457 },
  74         { .center_freq = 2462 },
  75         { .center_freq = 2467 },
  76         { .center_freq = 2472 },
  77         { .center_freq = 2484 },
  78 };
  79
  80 static void rtl8187_iowrite_async_cb(struct urb *urb)
  81 {
  82         kfree(urb->context);
  83         usb_free_urb(urb);
  84 }
  85
  86 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
  87                                   void *data, u16 len)
  88 {
  89         struct usb_ctrlrequest *dr;
  90         struct urb *urb;
  91         struct rtl8187_async_write_data {
  92                 u8 data[4];
  93                 struct usb_ctrlrequest dr;
  94         } *buf;
  95
  96         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
  97         if (!buf)
  98                 return;
  99
 100         urb = usb_alloc_urb(0, GFP_ATOMIC);
 101         if (!urb) {
 102                 kfree(buf);
 103                 return;
 104         }
 105
 106         dr = &buf->dr;
 107
 108         dr->bRequestType = RTL8187_REQT_WRITE;
 109         dr->bRequest = RTL8187_REQ_SET_REG;
 110         dr->wValue = addr;
 111         dr->wIndex = 0;
 112         dr->wLength = cpu_to_le16(len);
 113
 114         memcpy(buf, data, len);
 115
 116         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
 117                              (unsigned char *)dr, buf, len,
 118                              rtl8187_iowrite_async_cb, buf);
 119         usb_submit_urb(urb, GFP_ATOMIC);
 120 }
 121
 122 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
 123                                            __le32 *addr, u32 val)
 124 {
 125         __le32 buf = cpu_to_le32(val);
 126
 127         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
 128                               &buf, sizeof(buf));
 129 }
 130
 131 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
 132 {
 133         struct rtl8187_priv *priv = dev->priv;
 134
 135         data <<= 8;
 136         data |= addr | 0x80;
 137
 138         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
 139         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
 140         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
 141         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
 142
 143         msleep(1);
 144 }
 145
 146 static void rtl8187_tx_cb(struct urb *urb)
 147 {
 148         struct ieee80211_tx_status status;
 149         struct sk_buff *skb = (struct sk_buff *)urb->context;
 150         struct rtl8187_tx_info *info = (struct rtl8187_tx_info *)skb->cb;
 151
 152         memset(&status, 0, sizeof(status));
 153
 154         usb_free_urb(info->urb);
 155         if (info->control)
 156                 memcpy(&status.control, info->control, sizeof(status.control));
 157         kfree(info->control);
 158         skb_pull(skb, sizeof(struct rtl8187_tx_hdr));
 159         status.flags |= IEEE80211_TX_STATUS_ACK;
 160         ieee80211_tx_status_irqsafe(info->dev, skb, &status);
 161 }
 162
 163 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
 164                       struct ieee80211_tx_control *control)
 165 {
 166         struct rtl8187_priv *priv = dev->priv;
 167         struct rtl8187_tx_hdr *hdr;
 168         struct rtl8187_tx_info *info;
 169         struct urb *urb;
 170         __le16 rts_dur = 0;
 171         u32 flags;
 172
 173         urb = usb_alloc_urb(0, GFP_ATOMIC);
 174         if (!urb) {
 175                 kfree_skb(skb);
 176                 return 0;
 177         }
 178
 179         flags = skb->len;
 180         flags |= RTL8187_TX_FLAG_NO_ENCRYPT;
 181
 182         BUG_ON(!control->tx_rate);
 183
 184         flags |= control->tx_rate->hw_value << 24;
 185         if (ieee80211_get_morefrag((struct ieee80211_hdr *)skb->data))
 186                 flags |= RTL8187_TX_FLAG_MORE_FRAG;
 187         if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
 188                 BUG_ON(!control->rts_cts_rate);
 189                 flags |= RTL8187_TX_FLAG_RTS;
 190                 flags |= control->rts_cts_rate->hw_value << 19;
 191                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 192                                                  skb->len, control);
 193         } else if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
 194                 BUG_ON(!control->rts_cts_rate);
 195                 flags |= RTL8187_TX_FLAG_CTS;
 196                 flags |= control->rts_cts_rate->hw_value << 19;
 197         }
 198
 199         hdr = (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 200         hdr->flags = cpu_to_le32(flags);
 201         hdr->len = 0;
 202         hdr->rts_duration = rts_dur;
 203         hdr->retry = cpu_to_le32(control->retry_limit << 8);
 204
 205         info = (struct rtl8187_tx_info *)skb->cb;
 206         info->control = kmemdup(control, sizeof(*control), GFP_ATOMIC);
 207         info->urb = urb;
 208         info->dev = dev;
 209         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, 2),
 210                           hdr, skb->len, rtl8187_tx_cb, skb);
 211         usb_submit_urb(urb, GFP_ATOMIC);
 212
 213         return 0;
 214 }
 215
 216 static void rtl8187_rx_cb(struct urb *urb)
 217 {
 218         struct sk_buff *skb = (struct sk_buff *)urb->context;
 219         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 220         struct ieee80211_hw *dev = info->dev;
 221         struct rtl8187_priv *priv = dev->priv;
 222         struct rtl8187_rx_hdr *hdr;
 223         struct ieee80211_rx_status rx_status = { 0 };
 224         int rate, signal;
 225         u32 flags;
 226
 227         spin_lock(&priv->rx_queue.lock);
 228         if (skb->next)
 229                 __skb_unlink(skb, &priv->rx_queue);
 230         else {
 231                 spin_unlock(&priv->rx_queue.lock);
 232                 return;
 233         }
 234         spin_unlock(&priv->rx_queue.lock);
 235
 236         if (unlikely(urb->status)) {
 237                 usb_free_urb(urb);
 238                 dev_kfree_skb_irq(skb);
 239                 return;
 240         }
 241
 242         skb_put(skb, urb->actual_length);
 243         hdr = (struct rtl8187_rx_hdr *)(skb_tail_pointer(skb) - sizeof(*hdr));
 244         flags = le32_to_cpu(hdr->flags);
 245         skb_trim(skb, flags & 0x0FFF);
 246
 247         signal = hdr->agc >> 1;
 248         rate = (flags >> 20) & 0xF;
 249         if (rate > 3) { /* OFDM rate */
 250                 if (signal > 90)
 251                         signal = 90;
 252                 else if (signal < 25)
 253                         signal = 25;
 254                 signal = 90 - signal;
 255         } else {        /* CCK rate */
 256                 if (signal > 95)
 257                         signal = 95;
 258                 else if (signal < 30)
 259                         signal = 30;
 260                 signal = 95 - signal;
 261         }
 262
 263         rx_status.antenna = (hdr->signal >> 7) & 1;
 264         rx_status.signal = 64 - min(hdr->noise, (u8)64);
 265         rx_status.ssi = signal;
 266         rx_status.rate_idx = rate;
 267         rx_status.freq = dev->conf.channel->center_freq;
 268         rx_status.band = dev->conf.channel->band;
 269         rx_status.mactime = le64_to_cpu(hdr->mac_time);
 270         rx_status.flag |= RX_FLAG_TSFT;
 271         if (flags & (1 << 13))
 272                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 273         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 274
 275         skb = dev_alloc_skb(RTL8187_MAX_RX);
 276         if (unlikely(!skb)) {
 277                 usb_free_urb(urb);
 278                 /* TODO check rx queue length and refill *somewhere* */
 279                 return;
 280         }
 281
 282         info = (struct rtl8187_rx_info *)skb->cb;
 283         info->urb = urb;
 284         info->dev = dev;
 285         urb->transfer_buffer = skb_tail_pointer(skb);
 286         urb->context = skb;
 287         skb_queue_tail(&priv->rx_queue, skb);
 288
 289         usb_submit_urb(urb, GFP_ATOMIC);
 290 }
 291
 292 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 293 {
 294         struct rtl8187_priv *priv = dev->priv;
 295         struct urb *entry;
 296         struct sk_buff *skb;
 297         struct rtl8187_rx_info *info;
 298
 299         while (skb_queue_len(&priv->rx_queue) < 8) {
 300                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 301                 if (!skb)
 302                         break;
 303                 entry = usb_alloc_urb(0, GFP_KERNEL);
 304                 if (!entry) {
 305                         kfree_skb(skb);
 306                         break;
 307                 }
 308                 usb_fill_bulk_urb(entry, priv->udev,
 309                                   usb_rcvbulkpipe(priv->udev, 1),
 310                                   skb_tail_pointer(skb),
 311                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 312                 info = (struct rtl8187_rx_info *)skb->cb;
 313                 info->urb = entry;
 314                 info->dev = dev;
 315                 skb_queue_tail(&priv->rx_queue, skb);
 316                 usb_submit_urb(entry, GFP_KERNEL);
 317         }
 318
 319         return 0;
 320 }
 321
 322 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 323 {
 324         struct rtl8187_priv *priv = dev->priv;
 325         u8 reg;
 326         int i;
 327
 328         /* reset */
 329         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 330         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 331         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 332         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 333         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 334         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 335         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 336
 337         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 338
 339         msleep(200);
 340         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 341         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 342         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 343         msleep(200);
 344
 345         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 346         reg &= (1 << 1);
 347         reg |= RTL818X_CMD_RESET;
 348         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 349
 350         i = 10;
 351         do {
 352                 msleep(2);
 353                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 354                       RTL818X_CMD_RESET))
 355                         break;
 356         } while (--i);
 357
 358         if (!i) {
 359                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 360                 return -ETIMEDOUT;
 361         }
 362
 363         /* reload registers from eeprom */
 364         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 365
 366         i = 10;
 367         do {
 368                 msleep(4);
 369                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 370                       RTL818X_EEPROM_CMD_CONFIG))
 371                         break;
 372         } while (--i);
 373
 374         if (!i) {
 375                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 376                        wiphy_name(dev->wiphy));
 377                 return -ETIMEDOUT;
 378         }
 379
 380         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 381         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 382         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 383         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 384         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 385         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 386         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 387
 388         /* setup card */
 389         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 390         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 391
 392         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 393         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 394         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 395
 396         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 397
 398         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 399         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 400         reg &= 0x3F;
 401         reg |= 0x80;
 402         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 403
 404         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 405
 406         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 407         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 408         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 409
 410         // TODO: set RESP_RATE and BRSR properly
 411         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 412         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 413
 414         /* host_usb_init */
 415         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 416         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 417         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 418         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 419         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 420         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 421         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 422         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 423         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 424         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 425         msleep(100);
 426
 427         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 428         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 429         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 430         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 431         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 432         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 433         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 434         msleep(100);
 435
 436         priv->rf->init(dev);
 437
 438         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 439         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 440         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 441         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 442         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 443         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 444         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 445
 446         return 0;
 447 }
 448
 449 static int rtl8187_start(struct ieee80211_hw *dev)
 450 {
 451         struct rtl8187_priv *priv = dev->priv;
 452         u32 reg;
 453         int ret;
 454
 455         ret = rtl8187_init_hw(dev);
 456         if (ret)
 457                 return ret;
 458
 459         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 460
 461         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 462         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 463
 464         rtl8187_init_urbs(dev);
 465
 466         reg = RTL818X_RX_CONF_ONLYERLPKT |
 467               RTL818X_RX_CONF_RX_AUTORESETPHY |
 468               RTL818X_RX_CONF_BSSID |
 469               RTL818X_RX_CONF_MGMT |
 470               RTL818X_RX_CONF_DATA |
 471               (7 << 13 /* RX FIFO threshold NONE */) |
 472               (7 << 10 /* MAX RX DMA */) |
 473               RTL818X_RX_CONF_BROADCAST |
 474               RTL818X_RX_CONF_NICMAC;
 475
 476         priv->rx_conf = reg;
 477         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 478
 479         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 480         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 481         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 482         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 483
 484         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 485         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 486         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 487         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 488         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 489
 490         reg  = RTL818X_TX_CONF_CW_MIN |
 491                (7 << 21 /* MAX TX DMA */) |
 492                RTL818X_TX_CONF_NO_ICV;
 493         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 494
 495         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 496         reg |= RTL818X_CMD_TX_ENABLE;
 497         reg |= RTL818X_CMD_RX_ENABLE;
 498         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 499
 500         return 0;
 501 }
 502
 503 static void rtl8187_stop(struct ieee80211_hw *dev)
 504 {
 505         struct rtl8187_priv *priv = dev->priv;
 506         struct rtl8187_rx_info *info;
 507         struct sk_buff *skb;
 508         u32 reg;
 509
 510         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 511
 512         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 513         reg &= ~RTL818X_CMD_TX_ENABLE;
 514         reg &= ~RTL818X_CMD_RX_ENABLE;
 515         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 516
 517         priv->rf->stop(dev);
 518
 519         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 520         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 521         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 522         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 523
 524         while ((skb = skb_dequeue(&priv->rx_queue))) {
 525                 info = (struct rtl8187_rx_info *)skb->cb;
 526                 usb_kill_urb(info->urb);
 527                 kfree_skb(skb);
 528         }
 529         return;
 530 }
 531
 532 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 533                                  struct ieee80211_if_init_conf *conf)
 534 {
 535         struct rtl8187_priv *priv = dev->priv;
 536         int i;
 537
 538         if (priv->mode != IEEE80211_IF_TYPE_MNTR)
 539                 return -EOPNOTSUPP;
 540
 541         switch (conf->type) {
 542         case IEEE80211_IF_TYPE_STA:
 543                 priv->mode = conf->type;
 544                 break;
 545         default:
 546                 return -EOPNOTSUPP;
 547         }
 548
 549         priv->vif = conf->vif;
 550
 551         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 552         for (i = 0; i < ETH_ALEN; i++)
 553                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
 554                                  ((u8 *)conf->mac_addr)[i]);
 555         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 556
 557         return 0;
 558 }
 559
 560 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
 561                                      struct ieee80211_if_init_conf *conf)
 562 {
 563         struct rtl8187_priv *priv = dev->priv;
 564         priv->mode = IEEE80211_IF_TYPE_MNTR;
 565         priv->vif = NULL;
 566 }
 567
 568 static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 569 {
 570         struct rtl8187_priv *priv = dev->priv;
 571         u32 reg;
 572
 573         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 574         /* Enable TX loopback on MAC level to avoid TX during channel
 575          * changes, as this has be seen to causes problems and the
 576          * card will stop work until next reset
 577          */
 578         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 579                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
 580         msleep(10);
 581         priv->rf->set_chan(dev, conf);
 582         msleep(10);
 583         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 584
 585         rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
 586
 587         if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
 588                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
 589                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
 590                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
 591                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0x73);
 592         } else {
 593                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
 594                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
 595                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
 596                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0xa5);
 597         }
 598
 599         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 600         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
 601         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 602         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
 603         return 0;
 604 }
 605
 606 static int rtl8187_config_interface(struct ieee80211_hw *dev,
 607                                     struct ieee80211_vif *vif,
 608                                     struct ieee80211_if_conf *conf)
 609 {
 610         struct rtl8187_priv *priv = dev->priv;
 611         int i;
 612
 613         for (i = 0; i < ETH_ALEN; i++)
 614                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 615
 616         if (is_valid_ether_addr(conf->bssid))
 617                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 618         else
 619                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 620
 621         return 0;
 622 }
 623
 624 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
 625                                      unsigned int changed_flags,
 626                                      unsigned int *total_flags,
 627                                      int mc_count, struct dev_addr_list *mclist)
 628 {
 629         struct rtl8187_priv *priv = dev->priv;
 630
 631         if (changed_flags & FIF_FCSFAIL)
 632                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
 633         if (changed_flags & FIF_CONTROL)
 634                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
 635         if (changed_flags & FIF_OTHER_BSS)
 636                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
 637         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
 638                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
 639         else
 640                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
 641
 642         *total_flags = 0;
 643
 644         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
 645                 *total_flags |= FIF_FCSFAIL;
 646         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
 647                 *total_flags |= FIF_CONTROL;
 648         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
 649                 *total_flags |= FIF_OTHER_BSS;
 650         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
 651                 *total_flags |= FIF_ALLMULTI;
 652
 653         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
 654 }
 655
 656 static const struct ieee80211_ops rtl8187_ops = {
 657         .tx                     = rtl8187_tx,
 658         .start                  = rtl8187_start,
 659         .stop                   = rtl8187_stop,
 660         .add_interface          = rtl8187_add_interface,
 661         .remove_interface       = rtl8187_remove_interface,
 662         .config                 = rtl8187_config,
 663         .config_interface       = rtl8187_config_interface,
 664         .configure_filter       = rtl8187_configure_filter,
 665 };
 666
 667 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
 668 {
 669         struct ieee80211_hw *dev = eeprom->data;
 670         struct rtl8187_priv *priv = dev->priv;
 671         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 672
 673         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
 674         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
 675         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
 676         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
 677 }
 678
 679 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
 680 {
 681         struct ieee80211_hw *dev = eeprom->data;
 682         struct rtl8187_priv *priv = dev->priv;
 683         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
 684
 685         if (eeprom->reg_data_in)
 686                 reg |= RTL818X_EEPROM_CMD_WRITE;
 687         if (eeprom->reg_data_out)
 688                 reg |= RTL818X_EEPROM_CMD_READ;
 689         if (eeprom->reg_data_clock)
 690                 reg |= RTL818X_EEPROM_CMD_CK;
 691         if (eeprom->reg_chip_select)
 692                 reg |= RTL818X_EEPROM_CMD_CS;
 693
 694         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
 695         udelay(10);
 696 }
 697
 698 static int __devinit rtl8187_probe(struct usb_interface *intf,
 699                                    const struct usb_device_id *id)
 700 {
 701         struct usb_device *udev = interface_to_usbdev(intf);
 702         struct ieee80211_hw *dev;
 703         struct rtl8187_priv *priv;
 704         struct eeprom_93cx6 eeprom;
 705         struct ieee80211_channel *channel;
 706         u16 txpwr, reg;
 707         int err, i;
 708         DECLARE_MAC_BUF(mac);
 709
 710         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
 711         if (!dev) {
 712                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
 713                 return -ENOMEM;
 714         }
 715
 716         priv = dev->priv;
 717
 718         SET_IEEE80211_DEV(dev, &intf->dev);
 719         usb_set_intfdata(intf, dev);
 720         priv->udev = udev;
 721
 722         usb_get_dev(udev);
 723
 724         skb_queue_head_init(&priv->rx_queue);
 725
 726         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
 727         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
 728
 729         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 730         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 731         priv->map = (struct rtl818x_csr *)0xFF00;
 732
 733         priv->band.band = IEEE80211_BAND_2GHZ;
 734         priv->band.channels = priv->channels;
 735         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
 736         priv->band.bitrates = priv->rates;
 737         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
 738         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
 739
 740
 741         priv->mode = IEEE80211_IF_TYPE_MNTR;
 742         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 743                      IEEE80211_HW_RX_INCLUDES_FCS;
 744         dev->extra_tx_headroom = sizeof(struct rtl8187_tx_hdr);
 745         dev->queues = 1;
 746         dev->max_rssi = 65;
 747         dev->max_signal = 64;
 748
 749         eeprom.data = dev;
 750         eeprom.register_read = rtl8187_eeprom_register_read;
 751         eeprom.register_write = rtl8187_eeprom_register_write;
 752         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
 753                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 754         else
 755                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 756
 757         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 758         udelay(10);
 759
 760         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
 761                                (__le16 __force *)dev->wiphy->perm_addr, 3);
 762         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 763                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
 764                        "generated MAC address\n");
 765                 random_ether_addr(dev->wiphy->perm_addr);
 766         }
 767
 768         channel = priv->channels;
 769         for (i = 0; i < 3; i++) {
 770                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
 771                                   &txpwr);
 772                 (*channel++).hw_value = txpwr & 0xFF;
 773                 (*channel++).hw_value = txpwr >> 8;
 774         }
 775         for (i = 0; i < 2; i++) {
 776                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
 777                                   &txpwr);
 778                 (*channel++).hw_value = txpwr & 0xFF;
 779                 (*channel++).hw_value = txpwr >> 8;
 780         }
 781         for (i = 0; i < 2; i++) {
 782                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6 + i,
 783                                   &txpwr);
 784                 (*channel++).hw_value = txpwr & 0xFF;
 785                 (*channel++).hw_value = txpwr >> 8;
 786         }
 787
 788         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
 789                           &priv->txpwr_base);
 790
 791         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 792         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 793         /* 0 means asic B-cut, we should use SW 3 wire
 794          * bit-by-bit banging for radio. 1 means we can use
 795          * USB specific request to write radio registers */
 796         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
 797         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 798         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 799
 800         priv->rf = rtl8187_detect_rf(dev);
 801
 802         err = ieee80211_register_hw(dev);
 803         if (err) {
 804                 printk(KERN_ERR "rtl8187: Cannot register device\n");
 805                 goto err_free_dev;
 806         }
 807
 808         printk(KERN_INFO "%s: hwaddr %s, rtl8187 V%d + %s\n",
 809                wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
 810                priv->asic_rev, priv->rf->name);
 811
 812         return 0;
 813
 814  err_free_dev:
 815         ieee80211_free_hw(dev);
 816         usb_set_intfdata(intf, NULL);
 817         usb_put_dev(udev);
 818         return err;
 819 }
 820
 821 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
 822 {
 823         struct ieee80211_hw *dev = usb_get_intfdata(intf);
 824         struct rtl8187_priv *priv;
 825
 826         if (!dev)
 827                 return;
 828
 829         ieee80211_unregister_hw(dev);
 830
 831         priv = dev->priv;
 832         usb_put_dev(interface_to_usbdev(intf));
 833         ieee80211_free_hw(dev);
 834 }
 835
 836 static struct usb_driver rtl8187_driver = {
 837         .name           = KBUILD_MODNAME,
 838         .id_table       = rtl8187_table,
 839         .probe          = rtl8187_probe,
 840         .disconnect     = rtl8187_disconnect,
 841 };
 842
 843 static int __init rtl8187_init(void)
 844 {
 845         return usb_register(&rtl8187_driver);
 846 }
 847
 848 static void __exit rtl8187_exit(void)
 849 {
 850         usb_deregister(&rtl8187_driver);
 851 }
 852
 853 module_init(rtl8187_init);
 854 module_exit(rtl8187_exit);