err.no 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 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         flags |= control->rts_cts_rate->hw_value << 19;
 182         flags |= control->tx_rate->hw_value << 24;
 183         if (ieee80211_get_morefrag((struct ieee80211_hdr *)skb->data))
 184                 flags |= RTL8187_TX_FLAG_MORE_FRAG;
 185         if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
 186                 flags |= RTL8187_TX_FLAG_RTS;
 187                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
 188                                                  skb->len, control);
 189         }
 190         if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
 191                 flags |= RTL8187_TX_FLAG_CTS;
 192
 193         hdr = (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 194         hdr->flags = cpu_to_le32(flags);
 195         hdr->len = 0;
 196         hdr->rts_duration = rts_dur;
 197         hdr->retry = cpu_to_le32(control->retry_limit << 8);
 198
 199         info = (struct rtl8187_tx_info *)skb->cb;
 200         info->control = kmemdup(control, sizeof(*control), GFP_ATOMIC);
 201         info->urb = urb;
 202         info->dev = dev;
 203         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, 2),
 204                           hdr, skb->len, rtl8187_tx_cb, skb);
 205         usb_submit_urb(urb, GFP_ATOMIC);
 206
 207         return 0;
 208 }
 209
 210 static void rtl8187_rx_cb(struct urb *urb)
 211 {
 212         struct sk_buff *skb = (struct sk_buff *)urb->context;
 213         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 214         struct ieee80211_hw *dev = info->dev;
 215         struct rtl8187_priv *priv = dev->priv;
 216         struct rtl8187_rx_hdr *hdr;
 217         struct ieee80211_rx_status rx_status = { 0 };
 218         int rate, signal;
 219         u32 flags;
 220
 221         spin_lock(&priv->rx_queue.lock);
 222         if (skb->next)
 223                 __skb_unlink(skb, &priv->rx_queue);
 224         else {
 225                 spin_unlock(&priv->rx_queue.lock);
 226                 return;
 227         }
 228         spin_unlock(&priv->rx_queue.lock);
 229
 230         if (unlikely(urb->status)) {
 231                 usb_free_urb(urb);
 232                 dev_kfree_skb_irq(skb);
 233                 return;
 234         }
 235
 236         skb_put(skb, urb->actual_length);
 237         hdr = (struct rtl8187_rx_hdr *)(skb_tail_pointer(skb) - sizeof(*hdr));
 238         flags = le32_to_cpu(hdr->flags);
 239         skb_trim(skb, flags & 0x0FFF);
 240
 241         signal = hdr->agc >> 1;
 242         rate = (flags >> 20) & 0xF;
 243         if (rate > 3) { /* OFDM rate */
 244                 if (signal > 90)
 245                         signal = 90;
 246                 else if (signal < 25)
 247                         signal = 25;
 248                 signal = 90 - signal;
 249         } else {        /* CCK rate */
 250                 if (signal > 95)
 251                         signal = 95;
 252                 else if (signal < 30)
 253                         signal = 30;
 254                 signal = 95 - signal;
 255         }
 256
 257         rx_status.antenna = (hdr->signal >> 7) & 1;
 258         rx_status.signal = 64 - min(hdr->noise, (u8)64);
 259         rx_status.ssi = signal;
 260         rx_status.rate_idx = rate;
 261         rx_status.freq = dev->conf.channel->center_freq;
 262         rx_status.band = dev->conf.channel->band;
 263         rx_status.mactime = le64_to_cpu(hdr->mac_time);
 264         rx_status.flag |= RX_FLAG_TSFT;
 265         if (flags & (1 << 13))
 266                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 267         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 268
 269         skb = dev_alloc_skb(RTL8187_MAX_RX);
 270         if (unlikely(!skb)) {
 271                 usb_free_urb(urb);
 272                 /* TODO check rx queue length and refill *somewhere* */
 273                 return;
 274         }
 275
 276         info = (struct rtl8187_rx_info *)skb->cb;
 277         info->urb = urb;
 278         info->dev = dev;
 279         urb->transfer_buffer = skb_tail_pointer(skb);
 280         urb->context = skb;
 281         skb_queue_tail(&priv->rx_queue, skb);
 282
 283         usb_submit_urb(urb, GFP_ATOMIC);
 284 }
 285
 286 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 287 {
 288         struct rtl8187_priv *priv = dev->priv;
 289         struct urb *entry;
 290         struct sk_buff *skb;
 291         struct rtl8187_rx_info *info;
 292
 293         while (skb_queue_len(&priv->rx_queue) < 8) {
 294                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 295                 if (!skb)
 296                         break;
 297                 entry = usb_alloc_urb(0, GFP_KERNEL);
 298                 if (!entry) {
 299                         kfree_skb(skb);
 300                         break;
 301                 }
 302                 usb_fill_bulk_urb(entry, priv->udev,
 303                                   usb_rcvbulkpipe(priv->udev, 1),
 304                                   skb_tail_pointer(skb),
 305                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 306                 info = (struct rtl8187_rx_info *)skb->cb;
 307                 info->urb = entry;
 308                 info->dev = dev;
 309                 skb_queue_tail(&priv->rx_queue, skb);
 310                 usb_submit_urb(entry, GFP_KERNEL);
 311         }
 312
 313         return 0;
 314 }
 315
 316 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 317 {
 318         struct rtl8187_priv *priv = dev->priv;
 319         u8 reg;
 320         int i;
 321
 322         /* reset */
 323         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 324         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 325         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 326         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 327         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 328         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 329         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 330
 331         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 332
 333         msleep(200);
 334         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 335         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 336         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 337         msleep(200);
 338
 339         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 340         reg &= (1 << 1);
 341         reg |= RTL818X_CMD_RESET;
 342         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 343
 344         i = 10;
 345         do {
 346                 msleep(2);
 347                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 348                       RTL818X_CMD_RESET))
 349                         break;
 350         } while (--i);
 351
 352         if (!i) {
 353                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 354                 return -ETIMEDOUT;
 355         }
 356
 357         /* reload registers from eeprom */
 358         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 359
 360         i = 10;
 361         do {
 362                 msleep(4);
 363                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 364                       RTL818X_EEPROM_CMD_CONFIG))
 365                         break;
 366         } while (--i);
 367
 368         if (!i) {
 369                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 370                        wiphy_name(dev->wiphy));
 371                 return -ETIMEDOUT;
 372         }
 373
 374         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 375         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 376         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 377         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 378         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 379         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 380         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 381
 382         /* setup card */
 383         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 384         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 385
 386         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 387         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 388         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 389
 390         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 391
 392         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 393         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 394         reg &= 0x3F;
 395         reg |= 0x80;
 396         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 397
 398         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 399
 400         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 401         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 402         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 403
 404         // TODO: set RESP_RATE and BRSR properly
 405         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 406         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 407
 408         /* host_usb_init */
 409         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 410         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 411         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 412         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 413         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 414         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 415         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 416         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 417         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 418         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 419         msleep(100);
 420
 421         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 422         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 423         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 424         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 425         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 426         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 427         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 428         msleep(100);
 429
 430         priv->rf->init(dev);
 431
 432         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 433         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 434         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 435         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 436         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 437         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 438         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 439
 440         return 0;
 441 }
 442
 443 static int rtl8187_start(struct ieee80211_hw *dev)
 444 {
 445         struct rtl8187_priv *priv = dev->priv;
 446         u32 reg;
 447         int ret;
 448
 449         ret = rtl8187_init_hw(dev);
 450         if (ret)
 451                 return ret;
 452
 453         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 454
 455         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 456         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 457
 458         rtl8187_init_urbs(dev);
 459
 460         reg = RTL818X_RX_CONF_ONLYERLPKT |
 461               RTL818X_RX_CONF_RX_AUTORESETPHY |
 462               RTL818X_RX_CONF_BSSID |
 463               RTL818X_RX_CONF_MGMT |
 464               RTL818X_RX_CONF_DATA |
 465               (7 << 13 /* RX FIFO threshold NONE */) |
 466               (7 << 10 /* MAX RX DMA */) |
 467               RTL818X_RX_CONF_BROADCAST |
 468               RTL818X_RX_CONF_NICMAC;
 469
 470         priv->rx_conf = reg;
 471         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 472
 473         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 474         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 475         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 476         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 477
 478         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 479         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 480         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 481         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 482         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 483
 484         reg  = RTL818X_TX_CONF_CW_MIN |
 485                (7 << 21 /* MAX TX DMA */) |
 486                RTL818X_TX_CONF_NO_ICV;
 487         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 488
 489         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 490         reg |= RTL818X_CMD_TX_ENABLE;
 491         reg |= RTL818X_CMD_RX_ENABLE;
 492         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 493
 494         return 0;
 495 }
 496
 497 static void rtl8187_stop(struct ieee80211_hw *dev)
 498 {
 499         struct rtl8187_priv *priv = dev->priv;
 500         struct rtl8187_rx_info *info;
 501         struct sk_buff *skb;
 502         u32 reg;
 503
 504         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 505
 506         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 507         reg &= ~RTL818X_CMD_TX_ENABLE;
 508         reg &= ~RTL818X_CMD_RX_ENABLE;
 509         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 510
 511         priv->rf->stop(dev);
 512
 513         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 514         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 515         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 516         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 517
 518         while ((skb = skb_dequeue(&priv->rx_queue))) {
 519                 info = (struct rtl8187_rx_info *)skb->cb;
 520                 usb_kill_urb(info->urb);
 521                 kfree_skb(skb);
 522         }
 523         return;
 524 }
 525
 526 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 527                                  struct ieee80211_if_init_conf *conf)
 528 {
 529         struct rtl8187_priv *priv = dev->priv;
 530         int i;
 531
 532         if (priv->mode != IEEE80211_IF_TYPE_MNTR)
 533                 return -EOPNOTSUPP;
 534
 535         switch (conf->type) {
 536         case IEEE80211_IF_TYPE_STA:
 537                 priv->mode = conf->type;
 538                 break;
 539         default:
 540                 return -EOPNOTSUPP;
 541         }
 542
 543         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 544         for (i = 0; i < ETH_ALEN; i++)
 545                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
 546                                  ((u8 *)conf->mac_addr)[i]);
 547         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 548
 549         return 0;
 550 }
 551
 552 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
 553                                      struct ieee80211_if_init_conf *conf)
 554 {
 555         struct rtl8187_priv *priv = dev->priv;
 556         priv->mode = IEEE80211_IF_TYPE_MNTR;
 557 }
 558
 559 static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 560 {
 561         struct rtl8187_priv *priv = dev->priv;
 562         u32 reg;
 563
 564         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 565         /* Enable TX loopback on MAC level to avoid TX during channel
 566          * changes, as this has be seen to causes problems and the
 567          * card will stop work until next reset
 568          */
 569         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 570                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
 571         msleep(10);
 572         priv->rf->set_chan(dev, conf);
 573         msleep(10);
 574         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 575
 576         rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
 577
 578         if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
 579                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
 580                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
 581                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
 582                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0x73);
 583         } else {
 584                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
 585                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
 586                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
 587                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0xa5);
 588         }
 589
 590         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 591         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
 592         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 593         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
 594         return 0;
 595 }
 596
 597 static int rtl8187_config_interface(struct ieee80211_hw *dev,
 598                                     struct ieee80211_vif *vif,
 599                                     struct ieee80211_if_conf *conf)
 600 {
 601         struct rtl8187_priv *priv = dev->priv;
 602         int i;
 603
 604         for (i = 0; i < ETH_ALEN; i++)
 605                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 606
 607         if (is_valid_ether_addr(conf->bssid))
 608                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 609         else
 610                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 611
 612         return 0;
 613 }
 614
 615 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
 616                                      unsigned int changed_flags,
 617                                      unsigned int *total_flags,
 618                                      int mc_count, struct dev_addr_list *mclist)
 619 {
 620         struct rtl8187_priv *priv = dev->priv;
 621
 622         if (changed_flags & FIF_FCSFAIL)
 623                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
 624         if (changed_flags & FIF_CONTROL)
 625                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
 626         if (changed_flags & FIF_OTHER_BSS)
 627                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
 628         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
 629                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
 630         else
 631                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
 632
 633         *total_flags = 0;
 634
 635         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
 636                 *total_flags |= FIF_FCSFAIL;
 637         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
 638                 *total_flags |= FIF_CONTROL;
 639         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
 640                 *total_flags |= FIF_OTHER_BSS;
 641         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
 642                 *total_flags |= FIF_ALLMULTI;
 643
 644         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
 645 }
 646
 647 static const struct ieee80211_ops rtl8187_ops = {
 648         .tx                     = rtl8187_tx,
 649         .start                  = rtl8187_start,
 650         .stop                   = rtl8187_stop,
 651         .add_interface          = rtl8187_add_interface,
 652         .remove_interface       = rtl8187_remove_interface,
 653         .config                 = rtl8187_config,
 654         .config_interface       = rtl8187_config_interface,
 655         .configure_filter       = rtl8187_configure_filter,
 656 };
 657
 658 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
 659 {
 660         struct ieee80211_hw *dev = eeprom->data;
 661         struct rtl8187_priv *priv = dev->priv;
 662         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 663
 664         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
 665         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
 666         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
 667         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
 668 }
 669
 670 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
 671 {
 672         struct ieee80211_hw *dev = eeprom->data;
 673         struct rtl8187_priv *priv = dev->priv;
 674         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
 675
 676         if (eeprom->reg_data_in)
 677                 reg |= RTL818X_EEPROM_CMD_WRITE;
 678         if (eeprom->reg_data_out)
 679                 reg |= RTL818X_EEPROM_CMD_READ;
 680         if (eeprom->reg_data_clock)
 681                 reg |= RTL818X_EEPROM_CMD_CK;
 682         if (eeprom->reg_chip_select)
 683                 reg |= RTL818X_EEPROM_CMD_CS;
 684
 685         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
 686         udelay(10);
 687 }
 688
 689 static int __devinit rtl8187_probe(struct usb_interface *intf,
 690                                    const struct usb_device_id *id)
 691 {
 692         struct usb_device *udev = interface_to_usbdev(intf);
 693         struct ieee80211_hw *dev;
 694         struct rtl8187_priv *priv;
 695         struct eeprom_93cx6 eeprom;
 696         struct ieee80211_channel *channel;
 697         u16 txpwr, reg;
 698         int err, i;
 699         DECLARE_MAC_BUF(mac);
 700
 701         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
 702         if (!dev) {
 703                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
 704                 return -ENOMEM;
 705         }
 706
 707         priv = dev->priv;
 708
 709         SET_IEEE80211_DEV(dev, &intf->dev);
 710         usb_set_intfdata(intf, dev);
 711         priv->udev = udev;
 712
 713         usb_get_dev(udev);
 714
 715         skb_queue_head_init(&priv->rx_queue);
 716
 717         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
 718         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
 719
 720         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 721         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 722         priv->map = (struct rtl818x_csr *)0xFF00;
 723
 724         priv->band.band = IEEE80211_BAND_2GHZ;
 725         priv->band.channels = priv->channels;
 726         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
 727         priv->band.bitrates = priv->rates;
 728         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
 729         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
 730
 731
 732         priv->mode = IEEE80211_IF_TYPE_MNTR;
 733         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 734                      IEEE80211_HW_RX_INCLUDES_FCS;
 735         dev->extra_tx_headroom = sizeof(struct rtl8187_tx_hdr);
 736         dev->queues = 1;
 737         dev->max_rssi = 65;
 738         dev->max_signal = 64;
 739
 740         eeprom.data = dev;
 741         eeprom.register_read = rtl8187_eeprom_register_read;
 742         eeprom.register_write = rtl8187_eeprom_register_write;
 743         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
 744                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 745         else
 746                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 747
 748         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 749         udelay(10);
 750
 751         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
 752                                (__le16 __force *)dev->wiphy->perm_addr, 3);
 753         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 754                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
 755                        "generated MAC address\n");
 756                 random_ether_addr(dev->wiphy->perm_addr);
 757         }
 758
 759         channel = priv->channels;
 760         for (i = 0; i < 3; i++) {
 761                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
 762                                   &txpwr);
 763                 (*channel++).hw_value = txpwr & 0xFF;
 764                 (*channel++).hw_value = txpwr >> 8;
 765         }
 766         for (i = 0; i < 2; i++) {
 767                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
 768                                   &txpwr);
 769                 (*channel++).hw_value = txpwr & 0xFF;
 770                 (*channel++).hw_value = txpwr >> 8;
 771         }
 772         for (i = 0; i < 2; i++) {
 773                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6 + i,
 774                                   &txpwr);
 775                 (*channel++).hw_value = txpwr & 0xFF;
 776                 (*channel++).hw_value = txpwr >> 8;
 777         }
 778
 779         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
 780                           &priv->txpwr_base);
 781
 782         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
 783         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
 784         /* 0 means asic B-cut, we should use SW 3 wire
 785          * bit-by-bit banging for radio. 1 means we can use
 786          * USB specific request to write radio registers */
 787         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
 788         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
 789         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 790
 791         priv->rf = rtl8187_detect_rf(dev);
 792
 793         err = ieee80211_register_hw(dev);
 794         if (err) {
 795                 printk(KERN_ERR "rtl8187: Cannot register device\n");
 796                 goto err_free_dev;
 797         }
 798
 799         printk(KERN_INFO "%s: hwaddr %s, rtl8187 V%d + %s\n",
 800                wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
 801                priv->asic_rev, priv->rf->name);
 802
 803         return 0;
 804
 805  err_free_dev:
 806         ieee80211_free_hw(dev);
 807         usb_set_intfdata(intf, NULL);
 808         usb_put_dev(udev);
 809         return err;
 810 }
 811
 812 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
 813 {
 814         struct ieee80211_hw *dev = usb_get_intfdata(intf);
 815         struct rtl8187_priv *priv;
 816
 817         if (!dev)
 818                 return;
 819
 820         ieee80211_unregister_hw(dev);
 821
 822         priv = dev->priv;
 823         usb_put_dev(interface_to_usbdev(intf));
 824         ieee80211_free_hw(dev);
 825 }
 826
 827 static struct usb_driver rtl8187_driver = {
 828         .name           = KBUILD_MODNAME,
 829         .id_table       = rtl8187_table,
 830         .probe          = rtl8187_probe,
 831         .disconnect     = rtl8187_disconnect,
 832 };
 833
 834 static int __init rtl8187_init(void)
 835 {
 836         return usb_register(&rtl8187_driver);
 837 }
 838
 839 static void __exit rtl8187_exit(void)
 840 {
 841         usb_deregister(&rtl8187_driver);
 842 }
 843
 844 module_init(rtl8187_init);
 845 module_exit(rtl8187_exit);