SAFE public projects git trees. - safe/jmp/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         {}
  40 };
  41
  42 MODULE_DEVICE_TABLE(usb, rtl8187_table);
  43
  44 static void rtl8187_iowrite_async_cb(struct urb *urb)
  45 {
  46         kfree(urb->context);
  47         usb_free_urb(urb);
  48 }
  49
  50 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
  51                                   void *data, u16 len)
  52 {
  53         struct usb_ctrlrequest *dr;
  54         struct urb *urb;
  55         struct rtl8187_async_write_data {
  56                 u8 data[4];
  57                 struct usb_ctrlrequest dr;
  58         } *buf;
  59
  60         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
  61         if (!buf)
  62                 return;
  63
  64         urb = usb_alloc_urb(0, GFP_ATOMIC);
  65         if (!urb) {
  66                 kfree(buf);
  67                 return;
  68         }
  69
  70         dr = &buf->dr;
  71
  72         dr->bRequestType = RTL8187_REQT_WRITE;
  73         dr->bRequest = RTL8187_REQ_SET_REG;
  74         dr->wValue = addr;
  75         dr->wIndex = 0;
  76         dr->wLength = cpu_to_le16(len);
  77
  78         memcpy(buf, data, len);
  79
  80         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
  81                              (unsigned char *)dr, buf, len,
  82                              rtl8187_iowrite_async_cb, buf);
  83         usb_submit_urb(urb, GFP_ATOMIC);
  84 }
  85
  86 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
  87                                            __le32 *addr, u32 val)
  88 {
  89         __le32 buf = cpu_to_le32(val);
  90
  91         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
  92                               &buf, sizeof(buf));
  93 }
  94
  95 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
  96 {
  97         struct rtl8187_priv *priv = dev->priv;
  98
  99         data <<= 8;
 100         data |= addr | 0x80;
 101
 102         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
 103         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
 104         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
 105         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
 106
 107         msleep(1);
 108 }
 109
 110 static void rtl8187_tx_cb(struct urb *urb)
 111 {
 112         struct ieee80211_tx_status status = { {0} };
 113         struct sk_buff *skb = (struct sk_buff *)urb->context;
 114         struct rtl8187_tx_info *info = (struct rtl8187_tx_info *)skb->cb;
 115
 116         usb_free_urb(info->urb);
 117         if (info->control)
 118                 memcpy(&status.control, info->control, sizeof(status.control));
 119         kfree(info->control);
 120         skb_pull(skb, sizeof(struct rtl8187_tx_hdr));
 121         status.flags |= IEEE80211_TX_STATUS_ACK;
 122         ieee80211_tx_status_irqsafe(info->dev, skb, &status);
 123 }
 124
 125 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
 126                       struct ieee80211_tx_control *control)
 127 {
 128         struct rtl8187_priv *priv = dev->priv;
 129         struct rtl8187_tx_hdr *hdr;
 130         struct rtl8187_tx_info *info;
 131         struct urb *urb;
 132         u32 tmp;
 133
 134         urb = usb_alloc_urb(0, GFP_ATOMIC);
 135         if (!urb) {
 136                 kfree_skb(skb);
 137                 return 0;
 138         }
 139
 140         hdr = (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
 141         tmp = skb->len - sizeof(*hdr);
 142         tmp |= RTL8187_TX_FLAG_NO_ENCRYPT;
 143         tmp |= control->rts_cts_rate << 19;
 144         tmp |= control->tx_rate << 24;
 145         if (ieee80211_get_morefrag((struct ieee80211_hdr *)skb))
 146                 tmp |= RTL8187_TX_FLAG_MORE_FRAG;
 147         if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
 148                 tmp |= RTL8187_TX_FLAG_RTS;
 149                 hdr->rts_duration =
 150                         ieee80211_rts_duration(dev, priv->if_id, skb->len, control);
 151         }
 152         if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
 153                 tmp |= RTL8187_TX_FLAG_CTS;
 154         hdr->flags = cpu_to_le32(tmp);
 155         hdr->len = 0;
 156         tmp = control->retry_limit << 8;
 157         hdr->retry = cpu_to_le32(tmp);
 158
 159         info = (struct rtl8187_tx_info *)skb->cb;
 160         info->control = kmemdup(control, sizeof(*control), GFP_ATOMIC);
 161         info->urb = urb;
 162         info->dev = dev;
 163         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, 2),
 164                           hdr, skb->len, rtl8187_tx_cb, skb);
 165         usb_submit_urb(urb, GFP_ATOMIC);
 166
 167         return 0;
 168 }
 169
 170 static void rtl8187_rx_cb(struct urb *urb)
 171 {
 172         struct sk_buff *skb = (struct sk_buff *)urb->context;
 173         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
 174         struct ieee80211_hw *dev = info->dev;
 175         struct rtl8187_priv *priv = dev->priv;
 176         struct rtl8187_rx_hdr *hdr;
 177         struct ieee80211_rx_status rx_status = { 0 };
 178         int rate, signal;
 179         u32 flags;
 180
 181         spin_lock(&priv->rx_queue.lock);
 182         if (skb->next)
 183                 __skb_unlink(skb, &priv->rx_queue);
 184         else {
 185                 spin_unlock(&priv->rx_queue.lock);
 186                 return;
 187         }
 188         spin_unlock(&priv->rx_queue.lock);
 189
 190         if (unlikely(urb->status)) {
 191                 usb_free_urb(urb);
 192                 dev_kfree_skb_irq(skb);
 193                 return;
 194         }
 195
 196         skb_put(skb, urb->actual_length);
 197         hdr = (struct rtl8187_rx_hdr *)(skb_tail_pointer(skb) - sizeof(*hdr));
 198         flags = le32_to_cpu(hdr->flags);
 199         skb_trim(skb, flags & 0x0FFF);
 200
 201         signal = hdr->agc >> 1;
 202         rate = (flags >> 20) & 0xF;
 203         if (rate > 3) { /* OFDM rate */
 204                 if (signal > 90)
 205                         signal = 90;
 206                 else if (signal < 25)
 207                         signal = 25;
 208                 signal = 90 - signal;
 209         } else {        /* CCK rate */
 210                 if (signal > 95)
 211                         signal = 95;
 212                 else if (signal < 30)
 213                         signal = 30;
 214                 signal = 95 - signal;
 215         }
 216
 217         rx_status.antenna = (hdr->signal >> 7) & 1;
 218         rx_status.signal = 64 - min(hdr->noise, (u8)64);
 219         rx_status.ssi = signal;
 220         rx_status.rate = rate;
 221         rx_status.freq = dev->conf.freq;
 222         rx_status.channel = dev->conf.channel;
 223         rx_status.phymode = dev->conf.phymode;
 224         rx_status.mactime = le64_to_cpu(hdr->mac_time);
 225         if (flags & (1 << 13))
 226                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 227         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 228
 229         skb = dev_alloc_skb(RTL8187_MAX_RX);
 230         if (unlikely(!skb)) {
 231                 usb_free_urb(urb);
 232                 /* TODO check rx queue length and refill *somewhere* */
 233                 return;
 234         }
 235
 236         info = (struct rtl8187_rx_info *)skb->cb;
 237         info->urb = urb;
 238         info->dev = dev;
 239         urb->transfer_buffer = skb_tail_pointer(skb);
 240         urb->context = skb;
 241         skb_queue_tail(&priv->rx_queue, skb);
 242
 243         usb_submit_urb(urb, GFP_ATOMIC);
 244 }
 245
 246 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
 247 {
 248         struct rtl8187_priv *priv = dev->priv;
 249         struct urb *entry;
 250         struct sk_buff *skb;
 251         struct rtl8187_rx_info *info;
 252
 253         while (skb_queue_len(&priv->rx_queue) < 8) {
 254                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
 255                 if (!skb)
 256                         break;
 257                 entry = usb_alloc_urb(0, GFP_KERNEL);
 258                 if (!entry) {
 259                         kfree_skb(skb);
 260                         break;
 261                 }
 262                 usb_fill_bulk_urb(entry, priv->udev,
 263                                   usb_rcvbulkpipe(priv->udev, 1),
 264                                   skb_tail_pointer(skb),
 265                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
 266                 info = (struct rtl8187_rx_info *)skb->cb;
 267                 info->urb = entry;
 268                 info->dev = dev;
 269                 skb_queue_tail(&priv->rx_queue, skb);
 270                 usb_submit_urb(entry, GFP_KERNEL);
 271         }
 272
 273         return 0;
 274 }
 275
 276 static int rtl8187_init_hw(struct ieee80211_hw *dev)
 277 {
 278         struct rtl8187_priv *priv = dev->priv;
 279         u8 reg;
 280         int i;
 281
 282         /* reset */
 283         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 284         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 285         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 286         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 287         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 288         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 289         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 290
 291         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 292
 293         msleep(200);
 294         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
 295         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
 296         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
 297         msleep(200);
 298
 299         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 300         reg &= (1 << 1);
 301         reg |= RTL818X_CMD_RESET;
 302         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 303
 304         i = 10;
 305         do {
 306                 msleep(2);
 307                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
 308                       RTL818X_CMD_RESET))
 309                         break;
 310         } while (--i);
 311
 312         if (!i) {
 313                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
 314                 return -ETIMEDOUT;
 315         }
 316
 317         /* reload registers from eeprom */
 318         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 319
 320         i = 10;
 321         do {
 322                 msleep(4);
 323                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
 324                       RTL818X_EEPROM_CMD_CONFIG))
 325                         break;
 326         } while (--i);
 327
 328         if (!i) {
 329                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
 330                        wiphy_name(dev->wiphy));
 331                 return -ETIMEDOUT;
 332         }
 333
 334         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 335         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 336         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 337         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
 338         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
 339         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 340         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 341
 342         /* setup card */
 343         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 344         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 345
 346         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 347         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
 348         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 349
 350         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 351
 352         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
 353         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
 354         reg &= 0x3F;
 355         reg |= 0x80;
 356         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
 357
 358         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 359
 360         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 361         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 362         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 363
 364         // TODO: set RESP_RATE and BRSR properly
 365         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 366         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 367
 368         /* host_usb_init */
 369         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
 370         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
 371         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
 372         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
 373         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
 374         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
 375         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
 376         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
 377         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
 378         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
 379         msleep(100);
 380
 381         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
 382         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
 383         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
 384         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 385         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
 386         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 387         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
 388         msleep(100);
 389
 390         priv->rf_init(dev);
 391
 392         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 393         reg = rtl818x_ioread16(priv, &priv->map->PGSELECT) & 0xfffe;
 394         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg | 0x1);
 395         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
 396         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
 397         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
 398         rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg);
 399
 400         return 0;
 401 }
 402
 403 static void rtl8187_set_channel(struct ieee80211_hw *dev, int channel)
 404 {
 405         u32 reg;
 406         struct rtl8187_priv *priv = dev->priv;
 407
 408         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 409         /* Enable TX loopback on MAC level to avoid TX during channel
 410          * changes, as this has be seen to causes problems and the
 411          * card will stop work until next reset
 412          */
 413         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
 414                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
 415         msleep(10);
 416         rtl8225_rf_set_channel(dev, channel);
 417         msleep(10);
 418         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 419 }
 420
 421 static int rtl8187_start(struct ieee80211_hw *dev)
 422 {
 423         struct rtl8187_priv *priv = dev->priv;
 424         u32 reg;
 425         int ret;
 426
 427         ret = rtl8187_init_hw(dev);
 428         if (ret)
 429                 return ret;
 430
 431         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 432
 433         rtl8187_init_urbs(dev);
 434
 435         reg = RTL818X_RX_CONF_ONLYERLPKT |
 436               RTL818X_RX_CONF_RX_AUTORESETPHY |
 437               RTL818X_RX_CONF_BSSID |
 438               RTL818X_RX_CONF_MGMT |
 439               RTL818X_RX_CONF_DATA |
 440               (7 << 13 /* RX FIFO threshold NONE */) |
 441               (7 << 10 /* MAX RX DMA */) |
 442               RTL818X_RX_CONF_BROADCAST |
 443               RTL818X_RX_CONF_NICMAC;
 444
 445         priv->rx_conf = reg;
 446         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 447
 448         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 449         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 450         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 451         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 452
 453         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 454         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 455         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 456         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 457         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 458
 459         reg  = RTL818X_TX_CONF_CW_MIN |
 460                (7 << 21 /* MAX TX DMA */) |
 461                RTL818X_TX_CONF_NO_ICV;
 462         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 463
 464         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 465         reg |= RTL818X_CMD_TX_ENABLE;
 466         reg |= RTL818X_CMD_RX_ENABLE;
 467         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 468
 469         return 0;
 470 }
 471
 472 static void rtl8187_stop(struct ieee80211_hw *dev)
 473 {
 474         struct rtl8187_priv *priv = dev->priv;
 475         struct rtl8187_rx_info *info;
 476         struct sk_buff *skb;
 477         u32 reg;
 478
 479         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 480
 481         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 482         reg &= ~RTL818X_CMD_TX_ENABLE;
 483         reg &= ~RTL818X_CMD_RX_ENABLE;
 484         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 485
 486         rtl8225_rf_stop(dev);
 487
 488         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 489         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 490         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 491         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 492
 493         while ((skb = skb_dequeue(&priv->rx_queue))) {
 494                 info = (struct rtl8187_rx_info *)skb->cb;
 495                 usb_kill_urb(info->urb);
 496                 kfree_skb(skb);
 497         }
 498         return;
 499 }
 500
 501 static int rtl8187_add_interface(struct ieee80211_hw *dev,
 502                                  struct ieee80211_if_init_conf *conf)
 503 {
 504         struct rtl8187_priv *priv = dev->priv;
 505         int i;
 506
 507         if (priv->mode != IEEE80211_IF_TYPE_MNTR)
 508                 return -EOPNOTSUPP;
 509
 510         switch (conf->type) {
 511         case IEEE80211_IF_TYPE_STA:
 512                 priv->mode = conf->type;
 513                 break;
 514         default:
 515                 return -EOPNOTSUPP;
 516         }
 517
 518         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 519         for (i = 0; i < ETH_ALEN; i++)
 520                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
 521                                  ((u8 *)conf->mac_addr)[i]);
 522         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 523
 524         return 0;
 525 }
 526
 527 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
 528                                      struct ieee80211_if_init_conf *conf)
 529 {
 530         struct rtl8187_priv *priv = dev->priv;
 531         priv->mode = IEEE80211_IF_TYPE_MNTR;
 532 }
 533
 534 static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 535 {
 536         struct rtl8187_priv *priv = dev->priv;
 537         rtl8187_set_channel(dev, conf->channel);
 538
 539         rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
 540
 541         if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
 542                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
 543                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
 544                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
 545                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0x73);
 546         } else {
 547                 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
 548                 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
 549                 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
 550                 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0xa5);
 551         }
 552
 553         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
 554         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
 555         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
 556         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
 557         return 0;
 558 }
 559
 560 static int rtl8187_config_interface(struct ieee80211_hw *dev, int if_id,
 561                                     struct ieee80211_if_conf *conf)
 562 {
 563         struct rtl8187_priv *priv = dev->priv;
 564         int i;
 565
 566         priv->if_id = if_id;
 567
 568         for (i = 0; i < ETH_ALEN; i++)
 569                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 570
 571         if (is_valid_ether_addr(conf->bssid))
 572                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 573         else
 574                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 575
 576         return 0;
 577 }
 578
 579 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
 580                                      unsigned int changed_flags,
 581                                      unsigned int *total_flags,
 582                                      int mc_count, struct dev_addr_list *mc_list)
 583 {
 584         struct rtl8187_priv *priv = dev->priv;
 585
 586         *total_flags = 0;
 587
 588         if (changed_flags & FIF_PROMISC_IN_BSS)
 589                 priv->rx_conf ^= RTL818X_RX_CONF_NICMAC;
 590         if (changed_flags & FIF_ALLMULTI)
 591                 priv->rx_conf ^= RTL818X_RX_CONF_MULTICAST;
 592         if (changed_flags & FIF_FCSFAIL)
 593                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
 594         if (changed_flags & FIF_CONTROL)
 595                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
 596         if (changed_flags & FIF_OTHER_BSS)
 597                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
 598
 599         if (mc_count > 0)
 600                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
 601
 602         if (priv->rx_conf & RTL818X_RX_CONF_NICMAC)
 603                 *total_flags |= FIF_PROMISC_IN_BSS;
 604         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
 605                 *total_flags |= FIF_ALLMULTI;
 606         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
 607                 *total_flags |= FIF_FCSFAIL;
 608         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
 609                 *total_flags |= FIF_CONTROL;
 610         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
 611                 *total_flags |= FIF_OTHER_BSS;
 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_ioread16(priv, &priv->map->PGSELECT) & ~1;
 753         rtl818x_iowrite16(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_iowrite16(priv, &priv->map->PGSELECT, reg);
 759         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 760
 761         rtl8225_write(dev, 0, 0x1B7);
 762
 763         if (rtl8225_read(dev, 8) != 0x588 || rtl8225_read(dev, 9) != 0x700)
 764                 priv->rf_init = rtl8225_rf_init;
 765         else
 766                 priv->rf_init = rtl8225z2_rf_init;
 767
 768         rtl8225_write(dev, 0, 0x0B7);
 769
 770         err = ieee80211_register_hw(dev);
 771         if (err) {
 772                 printk(KERN_ERR "rtl8187: Cannot register device\n");
 773                 goto err_free_dev;
 774         }
 775
 776         printk(KERN_INFO "%s: hwaddr %s, rtl8187 V%d + %s\n",
 777                wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
 778                priv->asic_rev, priv->rf_init == rtl8225_rf_init ?
 779                "rtl8225" : "rtl8225z2");
 780
 781         return 0;
 782
 783  err_free_dev:
 784         ieee80211_free_hw(dev);
 785         usb_set_intfdata(intf, NULL);
 786         usb_put_dev(udev);
 787         return err;
 788 }
 789
 790 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
 791 {
 792         struct ieee80211_hw *dev = usb_get_intfdata(intf);
 793         struct rtl8187_priv *priv;
 794
 795         if (!dev)
 796                 return;
 797
 798         ieee80211_unregister_hw(dev);
 799
 800         priv = dev->priv;
 801         usb_put_dev(interface_to_usbdev(intf));
 802         ieee80211_free_hw(dev);
 803 }
 804
 805 static struct usb_driver rtl8187_driver = {
 806         .name           = KBUILD_MODNAME,
 807         .id_table       = rtl8187_table,
 808         .probe          = rtl8187_probe,
 809         .disconnect     = rtl8187_disconnect,
 810 };
 811
 812 static int __init rtl8187_init(void)
 813 {
 814         return usb_register(&rtl8187_driver);
 815 }
 816
 817 static void __exit rtl8187_exit(void)
 818 {
 819         usb_deregister(&rtl8187_driver);
 820 }
 821
 822 module_init(rtl8187_init);
 823 module_exit(rtl8187_exit);