err.no Git - linux-2.6/blob - drivers/net/wireless/rt2x00/rt2500usb.c

   1 /*
   2         Copyright (C) 2004 - 2007 rt2x00 SourceForge Project
   3         <http://rt2x00.serialmonkey.com>
   4
   5         This program is free software; you can redistribute it and/or modify
   6         it under the terms of the GNU General Public License as published by
   7         the Free Software Foundation; either version 2 of the License, or
   8         (at your option) any later version.
   9
  10         This program is distributed in the hope that it will be useful,
  11         but WITHOUT ANY WARRANTY; without even the implied warranty of
  12         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13         GNU General Public License for more details.
  14
  15         You should have received a copy of the GNU General Public License
  16         along with this program; if not, write to the
  17         Free Software Foundation, Inc.,
  18         59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 /*
  22         Module: rt2500usb
  23         Abstract: rt2500usb device specific routines.
  24         Supported chipsets: RT2570.
  25  */
  26
  27 /*
  28  * Set enviroment defines for rt2x00.h
  29  */
  30 #define DRV_NAME "rt2500usb"
  31
  32 #include <linux/delay.h>
  33 #include <linux/etherdevice.h>
  34 #include <linux/init.h>
  35 #include <linux/kernel.h>
  36 #include <linux/module.h>
  37 #include <linux/usb.h>
  38
  39 #include "rt2x00.h"
  40 #include "rt2x00usb.h"
  41 #include "rt2500usb.h"
  42
  43 /*
  44  * Register access.
  45  * All access to the CSR registers will go through the methods
  46  * rt2500usb_register_read and rt2500usb_register_write.
  47  * BBP and RF register require indirect register access,
  48  * and use the CSR registers BBPCSR and RFCSR to achieve this.
  49  * These indirect registers work with busy bits,
  50  * and we will try maximal REGISTER_BUSY_COUNT times to access
  51  * the register while taking a REGISTER_BUSY_DELAY us delay
  52  * between each attampt. When the busy bit is still set at that time,
  53  * the access attempt is considered to have failed,
  54  * and we will print an error.
  55  */
  56 static inline void rt2500usb_register_read(const struct rt2x00_dev *rt2x00dev,
  57                                            const unsigned int offset,
  58                                            u16 *value)
  59 {
  60         __le16 reg;
  61         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  62                                       USB_VENDOR_REQUEST_IN, offset,
  63                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
  64         *value = le16_to_cpu(reg);
  65 }
  66
  67 static inline void rt2500usb_register_multiread(const struct rt2x00_dev
  68                                                 *rt2x00dev,
  69                                                 const unsigned int offset,
  70                                                 void *value, const u16 length)
  71 {
  72         int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
  73         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  74                                       USB_VENDOR_REQUEST_IN, offset,
  75                                       value, length, timeout);
  76 }
  77
  78 static inline void rt2500usb_register_write(const struct rt2x00_dev *rt2x00dev,
  79                                             const unsigned int offset,
  80                                             u16 value)
  81 {
  82         __le16 reg = cpu_to_le16(value);
  83         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
  84                                       USB_VENDOR_REQUEST_OUT, offset,
  85                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
  86 }
  87
  88 static inline void rt2500usb_register_multiwrite(const struct rt2x00_dev
  89                                                  *rt2x00dev,
  90                                                  const unsigned int offset,
  91                                                  void *value, const u16 length)
  92 {
  93         int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
  94         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
  95                                       USB_VENDOR_REQUEST_OUT, offset,
  96                                       value, length, timeout);
  97 }
  98
  99 static u16 rt2500usb_bbp_check(const struct rt2x00_dev *rt2x00dev)
 100 {
 101         u16 reg;
 102         unsigned int i;
 103
 104         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 105                 rt2500usb_register_read(rt2x00dev, PHY_CSR8, &reg);
 106                 if (!rt2x00_get_field16(reg, PHY_CSR8_BUSY))
 107                         break;
 108                 udelay(REGISTER_BUSY_DELAY);
 109         }
 110
 111         return reg;
 112 }
 113
 114 static void rt2500usb_bbp_write(const struct rt2x00_dev *rt2x00dev,
 115                                 const unsigned int word, const u8 value)
 116 {
 117         u16 reg;
 118
 119         /*
 120          * Wait until the BBP becomes ready.
 121          */
 122         reg = rt2500usb_bbp_check(rt2x00dev);
 123         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 124                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n");
 125                 return;
 126         }
 127
 128         /*
 129          * Write the data into the BBP.
 130          */
 131         reg = 0;
 132         rt2x00_set_field16(&reg, PHY_CSR7_DATA, value);
 133         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 134         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 0);
 135
 136         rt2500usb_register_write(rt2x00dev, PHY_CSR7, reg);
 137 }
 138
 139 static void rt2500usb_bbp_read(const struct rt2x00_dev *rt2x00dev,
 140                                const unsigned int word, u8 *value)
 141 {
 142         u16 reg;
 143
 144         /*
 145          * Wait until the BBP becomes ready.
 146          */
 147         reg = rt2500usb_bbp_check(rt2x00dev);
 148         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 149                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
 150                 return;
 151         }
 152
 153         /*
 154          * Write the request into the BBP.
 155          */
 156         reg = 0;
 157         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 158         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 1);
 159
 160         rt2500usb_register_write(rt2x00dev, PHY_CSR7, reg);
 161
 162         /*
 163          * Wait until the BBP becomes ready.
 164          */
 165         reg = rt2500usb_bbp_check(rt2x00dev);
 166         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 167                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
 168                 *value = 0xff;
 169                 return;
 170         }
 171
 172         rt2500usb_register_read(rt2x00dev, PHY_CSR7, &reg);
 173         *value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
 174 }
 175
 176 static void rt2500usb_rf_write(const struct rt2x00_dev *rt2x00dev,
 177                                const unsigned int word, const u32 value)
 178 {
 179         u16 reg;
 180         unsigned int i;
 181
 182         if (!word)
 183                 return;
 184
 185         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 186                 rt2500usb_register_read(rt2x00dev, PHY_CSR10, &reg);
 187                 if (!rt2x00_get_field16(reg, PHY_CSR10_RF_BUSY))
 188                         goto rf_write;
 189                 udelay(REGISTER_BUSY_DELAY);
 190         }
 191
 192         ERROR(rt2x00dev, "PHY_CSR10 register busy. Write failed.\n");
 193         return;
 194
 195 rf_write:
 196         reg = 0;
 197         rt2x00_set_field16(&reg, PHY_CSR9_RF_VALUE, value);
 198         rt2500usb_register_write(rt2x00dev, PHY_CSR9, reg);
 199
 200         reg = 0;
 201         rt2x00_set_field16(&reg, PHY_CSR10_RF_VALUE, value >> 16);
 202         rt2x00_set_field16(&reg, PHY_CSR10_RF_NUMBER_OF_BITS, 20);
 203         rt2x00_set_field16(&reg, PHY_CSR10_RF_IF_SELECT, 0);
 204         rt2x00_set_field16(&reg, PHY_CSR10_RF_BUSY, 1);
 205
 206         rt2500usb_register_write(rt2x00dev, PHY_CSR10, reg);
 207         rt2x00_rf_write(rt2x00dev, word, value);
 208 }
 209
 210 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 211 #define CSR_OFFSET(__word)      ( CSR_REG_BASE + ((__word) * sizeof(u16)) )
 212
 213 static void rt2500usb_read_csr(const struct rt2x00_dev *rt2x00dev,
 214                                const unsigned int word, u32 *data)
 215 {
 216         rt2500usb_register_read(rt2x00dev, CSR_OFFSET(word), (u16 *) data);
 217 }
 218
 219 static void rt2500usb_write_csr(const struct rt2x00_dev *rt2x00dev,
 220                                 const unsigned int word, u32 data)
 221 {
 222         rt2500usb_register_write(rt2x00dev, CSR_OFFSET(word), data);
 223 }
 224
 225 static const struct rt2x00debug rt2500usb_rt2x00debug = {
 226         .owner  = THIS_MODULE,
 227         .csr    = {
 228                 .read           = rt2500usb_read_csr,
 229                 .write          = rt2500usb_write_csr,
 230                 .word_size      = sizeof(u16),
 231                 .word_count     = CSR_REG_SIZE / sizeof(u16),
 232         },
 233         .eeprom = {
 234                 .read           = rt2x00_eeprom_read,
 235                 .write          = rt2x00_eeprom_write,
 236                 .word_size      = sizeof(u16),
 237                 .word_count     = EEPROM_SIZE / sizeof(u16),
 238         },
 239         .bbp    = {
 240                 .read           = rt2500usb_bbp_read,
 241                 .write          = rt2500usb_bbp_write,
 242                 .word_size      = sizeof(u8),
 243                 .word_count     = BBP_SIZE / sizeof(u8),
 244         },
 245         .rf     = {
 246                 .read           = rt2x00_rf_read,
 247                 .write          = rt2500usb_rf_write,
 248                 .word_size      = sizeof(u32),
 249                 .word_count     = RF_SIZE / sizeof(u32),
 250         },
 251 };
 252 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 253
 254 /*
 255  * Configuration handlers.
 256  */
 257 static void rt2500usb_config_mac_addr(struct rt2x00_dev *rt2x00dev, u8 *addr)
 258 {
 259         __le16 reg[3];
 260
 261         memset(&reg, 0, sizeof(reg));
 262         memcpy(&reg, addr, ETH_ALEN);
 263
 264         /*
 265          * The MAC address is passed to us as an array of bytes,
 266          * that array is little endian, so no need for byte ordering.
 267          */
 268         rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, &reg, sizeof(reg));
 269 }
 270
 271 static void rt2500usb_config_bssid(struct rt2x00_dev *rt2x00dev, u8 *bssid)
 272 {
 273         __le16 reg[3];
 274
 275         memset(&reg, 0, sizeof(reg));
 276         memcpy(&reg, bssid, ETH_ALEN);
 277
 278         /*
 279          * The BSSID is passed to us as an array of bytes,
 280          * that array is little endian, so no need for byte ordering.
 281          */
 282         rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, &reg, sizeof(reg));
 283 }
 284
 285 static void rt2500usb_config_type(struct rt2x00_dev *rt2x00dev, const int type)
 286 {
 287         struct interface *intf = &rt2x00dev->interface;
 288         u16 reg;
 289
 290         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 291
 292         /*
 293          * Enable beacon config
 294          */
 295         rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
 296         rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET,
 297                            (PREAMBLE + get_duration(IEEE80211_HEADER, 2)) >> 6);
 298         if (is_interface_type(intf, IEEE80211_IF_TYPE_STA))
 299                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW, 0);
 300         else
 301                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW, 2);
 302         rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
 303
 304         /*
 305          * Enable synchronisation.
 306          */
 307         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 308         rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
 309         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 310
 311         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 312         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
 313         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
 314         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
 315         if (is_interface_type(intf, IEEE80211_IF_TYPE_IBSS) ||
 316             is_interface_type(intf, IEEE80211_IF_TYPE_AP))
 317                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, 2);
 318         else if (is_interface_type(intf, IEEE80211_IF_TYPE_STA))
 319                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, 1);
 320         else
 321                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, 0);
 322         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 323 }
 324
 325 static void rt2500usb_config_rate(struct rt2x00_dev *rt2x00dev, const int rate)
 326 {
 327         struct ieee80211_conf *conf = &rt2x00dev->hw->conf;
 328         u16 reg;
 329         u16 value;
 330         u16 preamble;
 331
 332         if (DEVICE_GET_RATE_FIELD(rate, PREAMBLE))
 333                 preamble = SHORT_PREAMBLE;
 334         else
 335                 preamble = PREAMBLE;
 336
 337         reg = DEVICE_GET_RATE_FIELD(rate, RATEMASK) & DEV_BASIC_RATEMASK;
 338
 339         rt2500usb_register_write(rt2x00dev, TXRX_CSR11, reg);
 340
 341         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 342         value = ((conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) ?
 343                  SHORT_DIFS : DIFS) +
 344             PLCP + preamble + get_duration(ACK_SIZE, 10);
 345         rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, value);
 346         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 347
 348         rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
 349         if (preamble == SHORT_PREAMBLE)
 350                 rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE, 1);
 351         else
 352                 rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE, 0);
 353         rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
 354 }
 355
 356 static void rt2500usb_config_phymode(struct rt2x00_dev *rt2x00dev,
 357                                      const int phymode)
 358 {
 359         struct ieee80211_hw_mode *mode;
 360         struct ieee80211_rate *rate;
 361
 362         if (phymode == MODE_IEEE80211A)
 363                 rt2x00dev->curr_hwmode = HWMODE_A;
 364         else if (phymode == MODE_IEEE80211B)
 365                 rt2x00dev->curr_hwmode = HWMODE_B;
 366         else
 367                 rt2x00dev->curr_hwmode = HWMODE_G;
 368
 369         mode = &rt2x00dev->hwmodes[rt2x00dev->curr_hwmode];
 370         rate = &mode->rates[mode->num_rates - 1];
 371
 372         rt2500usb_config_rate(rt2x00dev, rate->val2);
 373
 374         if (phymode == MODE_IEEE80211B) {
 375                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x000b);
 376                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x0040);
 377         } else {
 378                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0005);
 379                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x016c);
 380         }
 381 }
 382
 383 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
 384                                      const int index, const int channel,
 385                                      const int txpower)
 386 {
 387         struct rf_channel reg;
 388
 389         /*
 390          * Fill rf_reg structure.
 391          */
 392         memcpy(&reg, &rt2x00dev->spec.channels[index], sizeof(reg));
 393
 394         /*
 395          * Set TXpower.
 396          */
 397         rt2x00_set_field32(&reg.rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 398
 399         /*
 400          * For RT2525E we should first set the channel to half band higher.
 401          */
 402         if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
 403                 static const u32 vals[] = {
 404                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
 405                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
 406                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
 407                         0x00000902, 0x00000906
 408                 };
 409
 410                 rt2500usb_rf_write(rt2x00dev, 2, vals[channel - 1]);
 411                 if (reg.rf4)
 412                         rt2500usb_rf_write(rt2x00dev, 4, reg.rf4);
 413         }
 414
 415         rt2500usb_rf_write(rt2x00dev, 1, reg.rf1);
 416         rt2500usb_rf_write(rt2x00dev, 2, reg.rf2);
 417         rt2500usb_rf_write(rt2x00dev, 3, reg.rf3);
 418         if (reg.rf4)
 419                 rt2500usb_rf_write(rt2x00dev, 4, reg.rf4);
 420 }
 421
 422 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
 423                                      const int txpower)
 424 {
 425         u32 rf3;
 426
 427         rt2x00_rf_read(rt2x00dev, 3, &rf3);
 428         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 429         rt2500usb_rf_write(rt2x00dev, 3, rf3);
 430 }
 431
 432 static void rt2500usb_config_antenna(struct rt2x00_dev *rt2x00dev,
 433                                      const int antenna_tx, const int antenna_rx)
 434 {
 435         u8 r2;
 436         u8 r14;
 437         u16 csr5;
 438         u16 csr6;
 439
 440         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
 441         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
 442         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
 443         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
 444
 445         /*
 446          * Configure the TX antenna.
 447          */
 448         switch (antenna_tx) {
 449         case ANTENNA_SW_DIVERSITY:
 450         case ANTENNA_HW_DIVERSITY:
 451                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
 452                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
 453                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
 454                 break;
 455         case ANTENNA_A:
 456                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
 457                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
 458                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
 459                 break;
 460         case ANTENNA_B:
 461                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
 462                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
 463                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
 464                 break;
 465         }
 466
 467         /*
 468          * Configure the RX antenna.
 469          */
 470         switch (antenna_rx) {
 471         case ANTENNA_SW_DIVERSITY:
 472         case ANTENNA_HW_DIVERSITY:
 473                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
 474                 break;
 475         case ANTENNA_A:
 476                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
 477                 break;
 478         case ANTENNA_B:
 479                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
 480                 break;
 481         }
 482
 483         /*
 484          * RT2525E and RT5222 need to flip TX I/Q
 485          */
 486         if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
 487             rt2x00_rf(&rt2x00dev->chip, RF5222)) {
 488                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
 489                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
 490                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
 491
 492                 /*
 493                  * RT2525E does not need RX I/Q Flip.
 494                  */
 495                 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
 496                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
 497         } else {
 498                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
 499                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
 500         }
 501
 502         rt2500usb_bbp_write(rt2x00dev, 2, r2);
 503         rt2500usb_bbp_write(rt2x00dev, 14, r14);
 504         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
 505         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
 506 }
 507
 508 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
 509                                       const int short_slot_time,
 510                                       const int beacon_int)
 511 {
 512         u16 reg;
 513
 514         rt2500usb_register_write(rt2x00dev, MAC_CSR10,
 515                                  short_slot_time ? SHORT_SLOT_TIME : SLOT_TIME);
 516
 517         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 518         rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL, beacon_int * 4);
 519         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 520 }
 521
 522 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
 523                              const unsigned int flags,
 524                              struct ieee80211_conf *conf)
 525 {
 526         int short_slot_time = conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME;
 527
 528         if (flags & CONFIG_UPDATE_PHYMODE)
 529                 rt2500usb_config_phymode(rt2x00dev, conf->phymode);
 530         if (flags & CONFIG_UPDATE_CHANNEL)
 531                 rt2500usb_config_channel(rt2x00dev, conf->channel_val,
 532                                          conf->channel, conf->power_level);
 533         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
 534                 rt2500usb_config_txpower(rt2x00dev, conf->power_level);
 535         if (flags & CONFIG_UPDATE_ANTENNA)
 536                 rt2500usb_config_antenna(rt2x00dev, conf->antenna_sel_tx,
 537                                          conf->antenna_sel_rx);
 538         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
 539                 rt2500usb_config_duration(rt2x00dev, short_slot_time,
 540                                           conf->beacon_int);
 541 }
 542
 543 /*
 544  * LED functions.
 545  */
 546 static void rt2500usb_enable_led(struct rt2x00_dev *rt2x00dev)
 547 {
 548         u16 reg;
 549
 550         rt2500usb_register_read(rt2x00dev, MAC_CSR21, &reg);
 551         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, 70);
 552         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, 30);
 553         rt2500usb_register_write(rt2x00dev, MAC_CSR21, reg);
 554
 555         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 556
 557         if (rt2x00dev->led_mode == LED_MODE_TXRX_ACTIVITY) {
 558                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 1);
 559                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 560         } else if (rt2x00dev->led_mode == LED_MODE_ASUS) {
 561                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 562                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 1);
 563         } else {
 564                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 1);
 565                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 1);
 566         }
 567
 568         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 569 }
 570
 571 static void rt2500usb_disable_led(struct rt2x00_dev *rt2x00dev)
 572 {
 573         u16 reg;
 574
 575         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 576         rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 577         rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 578         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 579 }
 580
 581 /*
 582  * Link tuning
 583  */
 584 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev)
 585 {
 586         u16 reg;
 587
 588         /*
 589          * Update FCS error count from register.
 590          */
 591         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
 592         rt2x00dev->link.rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
 593
 594         /*
 595          * Update False CCA count from register.
 596          */
 597         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
 598         rt2x00dev->link.false_cca =
 599             rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
 600 }
 601
 602 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
 603 {
 604         u16 eeprom;
 605         u16 value;
 606
 607         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
 608         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
 609         rt2500usb_bbp_write(rt2x00dev, 24, value);
 610
 611         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
 612         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
 613         rt2500usb_bbp_write(rt2x00dev, 25, value);
 614
 615         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
 616         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
 617         rt2500usb_bbp_write(rt2x00dev, 61, value);
 618
 619         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
 620         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
 621         rt2500usb_bbp_write(rt2x00dev, 17, value);
 622
 623         rt2x00dev->link.vgc_level = value;
 624 }
 625
 626 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
 627 {
 628         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
 629         u16 bbp_thresh;
 630         u16 vgc_bound;
 631         u16 sens;
 632         u16 r24;
 633         u16 r25;
 634         u16 r61;
 635         u16 r17_sens;
 636         u8 r17;
 637         u8 up_bound;
 638         u8 low_bound;
 639
 640         /*
 641          * Determine the BBP tuning threshold and correctly
 642          * set BBP 24, 25 and 61.
 643          */
 644         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
 645         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
 646
 647         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
 648         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
 649         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
 650
 651         if ((rssi + bbp_thresh) > 0) {
 652                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
 653                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
 654                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
 655         } else {
 656                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
 657                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
 658                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
 659         }
 660
 661         rt2500usb_bbp_write(rt2x00dev, 24, r24);
 662         rt2500usb_bbp_write(rt2x00dev, 25, r25);
 663         rt2500usb_bbp_write(rt2x00dev, 61, r61);
 664
 665         /*
 666          * Read current r17 value, as well as the sensitivity values
 667          * for the r17 register.
 668          */
 669         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
 670         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
 671
 672         /*
 673          * A too low RSSI will cause too much false CCA which will
 674          * then corrupt the R17 tuning. To remidy this the tuning should
 675          * be stopped (While making sure the R17 value will not exceed limits)
 676          */
 677         if (rssi >= -40) {
 678                 if (r17 != 0x60)
 679                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
 680                 return;
 681         }
 682
 683         /*
 684          * Special big-R17 for short distance
 685          */
 686         if (rssi >= -58) {
 687                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
 688                 if (r17 != sens)
 689                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 690                 return;
 691         }
 692
 693         /*
 694          * Special mid-R17 for middle distance
 695          */
 696         if (rssi >= -74) {
 697                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
 698                 if (r17 != sens)
 699                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 700                 return;
 701         }
 702
 703         /*
 704          * Leave short or middle distance condition, restore r17
 705          * to the dynamic tuning range.
 706          */
 707         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
 708         vgc_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
 709
 710         low_bound = 0x32;
 711         if (rssi >= -77)
 712                 up_bound = vgc_bound;
 713         else
 714                 up_bound = vgc_bound - (-77 - rssi);
 715
 716         if (up_bound < low_bound)
 717                 up_bound = low_bound;
 718
 719         if (r17 > up_bound) {
 720                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
 721                 rt2x00dev->link.vgc_level = up_bound;
 722         } else if (rt2x00dev->link.false_cca > 512 && r17 < up_bound) {
 723                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
 724                 rt2x00dev->link.vgc_level = r17;
 725         } else if (rt2x00dev->link.false_cca < 100 && r17 > low_bound) {
 726                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
 727                 rt2x00dev->link.vgc_level = r17;
 728         }
 729 }
 730
 731 /*
 732  * Initialization functions.
 733  */
 734 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
 735 {
 736         u16 reg;
 737
 738         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
 739                                     USB_MODE_TEST, REGISTER_TIMEOUT);
 740         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
 741                                     0x00f0, REGISTER_TIMEOUT);
 742
 743         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 744         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 745         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 746
 747         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
 748         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
 749
 750         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 751         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
 752         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
 753         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 754         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 755
 756         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 757         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 758         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 759         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 760         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 761
 762         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
 763         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
 764         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
 765         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
 766         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
 767         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
 768
 769         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
 770         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
 771         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
 772         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
 773         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
 774         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
 775
 776         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 777         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
 778         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
 779         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
 780         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
 781         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 782
 783         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 784         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
 785         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
 786         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
 787         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
 788         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 789
 790         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
 791         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
 792
 793         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 794                 return -EBUSY;
 795
 796         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 797         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 798         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 799         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
 800         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 801
 802         if (rt2x00_get_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
 803                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
 804                 reg &= ~0x0002;
 805         } else {
 806                 reg = 0x3002;
 807         }
 808         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
 809
 810         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
 811         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
 812         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
 813         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
 814
 815         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 816         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
 817                            rt2x00dev->rx->data_size);
 818         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
 819
 820         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 821         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 822         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
 823         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 824
 825         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 826         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
 827         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 828
 829         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
 830         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
 831         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
 832
 833         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 834         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
 835         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 836
 837         return 0;
 838 }
 839
 840 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
 841 {
 842         unsigned int i;
 843         u16 eeprom;
 844         u8 value;
 845         u8 reg_id;
 846
 847         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 848                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
 849                 if ((value != 0xff) && (value != 0x00))
 850                         goto continue_csr_init;
 851                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
 852                 udelay(REGISTER_BUSY_DELAY);
 853         }
 854
 855         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
 856         return -EACCES;
 857
 858 continue_csr_init:
 859         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
 860         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
 861         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
 862         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
 863         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
 864         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
 865         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
 866         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
 867         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
 868         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
 869         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
 870         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
 871         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
 872         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
 873         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
 874         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
 875         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
 876         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
 877         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
 878         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
 879         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
 880         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
 881         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
 882         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
 883         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
 884         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
 885         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
 886         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
 887         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
 888         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
 889         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
 890
 891         DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
 892         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 893                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 894
 895                 if (eeprom != 0xffff && eeprom != 0x0000) {
 896                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 897                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 898                         DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
 899                               reg_id, value);
 900                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
 901                 }
 902         }
 903         DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
 904
 905         return 0;
 906 }
 907
 908 /*
 909  * Device state switch handlers.
 910  */
 911 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
 912                                 enum dev_state state)
 913 {
 914         u16 reg;
 915
 916         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 917         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
 918                            state == STATE_RADIO_RX_OFF);
 919         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 920 }
 921
 922 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
 923 {
 924         /*
 925          * Initialize all registers.
 926          */
 927         if (rt2500usb_init_registers(rt2x00dev) ||
 928             rt2500usb_init_bbp(rt2x00dev)) {
 929                 ERROR(rt2x00dev, "Register initialization failed.\n");
 930                 return -EIO;
 931         }
 932
 933         rt2x00usb_enable_radio(rt2x00dev);
 934
 935         /*
 936          * Enable LED
 937          */
 938         rt2500usb_enable_led(rt2x00dev);
 939
 940         return 0;
 941 }
 942
 943 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
 944 {
 945         /*
 946          * Disable LED
 947          */
 948         rt2500usb_disable_led(rt2x00dev);
 949
 950         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
 951         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
 952
 953         /*
 954          * Disable synchronisation.
 955          */
 956         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 957
 958         rt2x00usb_disable_radio(rt2x00dev);
 959 }
 960
 961 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
 962                                enum dev_state state)
 963 {
 964         u16 reg;
 965         u16 reg2;
 966         unsigned int i;
 967         char put_to_sleep;
 968         char bbp_state;
 969         char rf_state;
 970
 971         put_to_sleep = (state != STATE_AWAKE);
 972
 973         reg = 0;
 974         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
 975         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
 976         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
 977         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 978         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
 979         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 980
 981         /*
 982          * Device is not guaranteed to be in the requested state yet.
 983          * We must wait until the register indicates that the
 984          * device has entered the correct state.
 985          */
 986         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 987                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
 988                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
 989                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
 990                 if (bbp_state == state && rf_state == state)
 991                         return 0;
 992                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 993                 msleep(30);
 994         }
 995
 996         NOTICE(rt2x00dev, "Device failed to enter state %d, "
 997                "current device state: bbp %d and rf %d.\n",
 998                state, bbp_state, rf_state);
 999
1000         return -EBUSY;
1001 }
1002
1003 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
1004                                       enum dev_state state)
1005 {
1006         int retval = 0;
1007
1008         switch (state) {
1009         case STATE_RADIO_ON:
1010                 retval = rt2500usb_enable_radio(rt2x00dev);
1011                 break;
1012         case STATE_RADIO_OFF:
1013                 rt2500usb_disable_radio(rt2x00dev);
1014                 break;
1015         case STATE_RADIO_RX_ON:
1016         case STATE_RADIO_RX_OFF:
1017                 rt2500usb_toggle_rx(rt2x00dev, state);
1018                 break;
1019         case STATE_DEEP_SLEEP:
1020         case STATE_SLEEP:
1021         case STATE_STANDBY:
1022         case STATE_AWAKE:
1023                 retval = rt2500usb_set_state(rt2x00dev, state);
1024                 break;
1025         default:
1026                 retval = -ENOTSUPP;
1027                 break;
1028         }
1029
1030         return retval;
1031 }
1032
1033 /*
1034  * TX descriptor initialization
1035  */
1036 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1037                                     struct data_desc *txd,
1038                                     struct txdata_entry_desc *desc,
1039                                     struct ieee80211_hdr *ieee80211hdr,
1040                                     unsigned int length,
1041                                     struct ieee80211_tx_control *control)
1042 {
1043         u32 word;
1044
1045         /*
1046          * Start writing the descriptor words.
1047          */
1048         rt2x00_desc_read(txd, 1, &word);
1049         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1050         rt2x00_set_field32(&word, TXD_W1_AIFS, desc->aifs);
1051         rt2x00_set_field32(&word, TXD_W1_CWMIN, desc->cw_min);
1052         rt2x00_set_field32(&word, TXD_W1_CWMAX, desc->cw_max);
1053         rt2x00_desc_write(txd, 1, word);
1054
1055         rt2x00_desc_read(txd, 2, &word);
1056         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, desc->signal);
1057         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, desc->service);
1058         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, desc->length_low);
1059         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, desc->length_high);
1060         rt2x00_desc_write(txd, 2, word);
1061
1062         rt2x00_desc_read(txd, 0, &word);
1063         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, control->retry_limit);
1064         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1065                            test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
1066         rt2x00_set_field32(&word, TXD_W0_ACK,
1067                            !(control->flags & IEEE80211_TXCTL_NO_ACK));
1068         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1069                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
1070         rt2x00_set_field32(&word, TXD_W0_OFDM,
1071                            test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
1072         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1073                            !!(control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT));
1074         rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
1075         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, length);
1076         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1077         rt2x00_desc_write(txd, 0, word);
1078 }
1079
1080 /*
1081  * TX data initialization
1082  */
1083 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1084                                     unsigned int queue)
1085 {
1086         u16 reg;
1087
1088         if (queue != IEEE80211_TX_QUEUE_BEACON)
1089                 return;
1090
1091         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1092         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1093                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1094                 /*
1095                  * Beacon generation will fail initially.
1096                  * To prevent this we need to register the TXRX_CSR19
1097                  * register several times.
1098                  */
1099                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1100                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1101                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1102                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1103                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1104         }
1105 }
1106
1107 /*
1108  * RX control handlers
1109  */
1110 static void rt2500usb_fill_rxdone(struct data_entry *entry,
1111                                   struct rxdata_entry_desc *desc)
1112 {
1113         struct urb *urb = entry->priv;
1114         struct data_desc *rxd = (struct data_desc *)(entry->skb->data +
1115                                                      (urb->actual_length -
1116                                                       entry->ring->desc_size));
1117         u32 word0;
1118         u32 word1;
1119
1120         rt2x00_desc_read(rxd, 0, &word0);
1121         rt2x00_desc_read(rxd, 1, &word1);
1122
1123         desc->flags = 0;
1124         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1125                 desc->flags |= RX_FLAG_FAILED_FCS_CRC;
1126         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1127                 desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1128
1129         /*
1130          * Obtain the status about this packet.
1131          */
1132         desc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1133         desc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1134             entry->ring->rt2x00dev->rssi_offset;
1135         desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1136         desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1137
1138         return;
1139 }
1140
1141 /*
1142  * Interrupt functions.
1143  */
1144 static void rt2500usb_beacondone(struct urb *urb)
1145 {
1146         struct data_entry *entry = (struct data_entry *)urb->context;
1147         struct data_ring *ring = entry->ring;
1148
1149         if (!test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags))
1150                 return;
1151
1152         /*
1153          * Check if this was the guardian beacon,
1154          * if that was the case we need to send the real beacon now.
1155          * Otherwise we should free the sk_buffer, the device
1156          * should be doing the rest of the work now.
1157          */
1158         if (ring->index == 1) {
1159                 rt2x00_ring_index_done_inc(ring);
1160                 entry = rt2x00_get_data_entry(ring);
1161                 usb_submit_urb(entry->priv, GFP_ATOMIC);
1162                 rt2x00_ring_index_inc(ring);
1163         } else if (ring->index_done == 1) {
1164                 entry = rt2x00_get_data_entry_done(ring);
1165                 if (entry->skb) {
1166                         dev_kfree_skb(entry->skb);
1167                         entry->skb = NULL;
1168                 }
1169                 rt2x00_ring_index_done_inc(ring);
1170         }
1171 }
1172
1173 /*
1174  * Device probe functions.
1175  */
1176 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1177 {
1178         u16 word;
1179         u8 *mac;
1180
1181         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1182
1183         /*
1184          * Start validation of the data that has been read.
1185          */
1186         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1187         if (!is_valid_ether_addr(mac)) {
1188                 DECLARE_MAC_BUF(macbuf);
1189
1190                 random_ether_addr(mac);
1191                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1192         }
1193
1194         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1195         if (word == 0xffff) {
1196                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1197                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT, 0);
1198                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT, 0);
1199                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE, 0);
1200                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1201                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1202                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1203                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1204                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1205         }
1206
1207         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1208         if (word == 0xffff) {
1209                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1210                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1211                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1212                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1213                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1214         }
1215
1216         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1217         if (word == 0xffff) {
1218                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1219                                    DEFAULT_RSSI_OFFSET);
1220                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1221                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1222         }
1223
1224         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1225         if (word == 0xffff) {
1226                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1227                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1228                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1229         }
1230
1231         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1232         if (word == 0xffff) {
1233                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1234                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1235                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1236         }
1237
1238         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1239         if (word == 0xffff) {
1240                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1241                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1242                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1243                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1244         }
1245
1246         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1247         if (word == 0xffff) {
1248                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1249                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1250                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1251                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1252         }
1253
1254         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1255         if (word == 0xffff) {
1256                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1257                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1258                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1259                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1260         }
1261
1262         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1263         if (word == 0xffff) {
1264                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1265                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1266                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1267                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1268         }
1269
1270         return 0;
1271 }
1272
1273 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1274 {
1275         u16 reg;
1276         u16 value;
1277         u16 eeprom;
1278
1279         /*
1280          * Read EEPROM word for configuration.
1281          */
1282         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1283
1284         /*
1285          * Identify RF chipset.
1286          */
1287         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1288         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1289         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1290
1291         if (rt2x00_rev(&rt2x00dev->chip, 0xffff0)) {
1292                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1293                 return -ENODEV;
1294         }
1295
1296         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1297             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1298             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1299             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1300             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1301             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1302                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1303                 return -ENODEV;
1304         }
1305
1306         /*
1307          * Identify default antenna configuration.
1308          */
1309         rt2x00dev->hw->conf.antenna_sel_tx =
1310             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1311         rt2x00dev->hw->conf.antenna_sel_rx =
1312             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1313
1314         /*
1315          * Store led mode, for correct led behaviour.
1316          */
1317         rt2x00dev->led_mode =
1318             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1319
1320         /*
1321          * Check if the BBP tuning should be disabled.
1322          */
1323         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1324         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1325                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1326
1327         /*
1328          * Read the RSSI <-> dBm offset information.
1329          */
1330         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1331         rt2x00dev->rssi_offset =
1332             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1333
1334         return 0;
1335 }
1336
1337 /*
1338  * RF value list for RF2522
1339  * Supports: 2.4 GHz
1340  */
1341 static const struct rf_channel rf_vals_bg_2522[] = {
1342         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1343         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1344         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1345         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1346         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1347         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1348         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1349         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1350         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1351         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1352         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1353         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1354         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1355         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1356 };
1357
1358 /*
1359  * RF value list for RF2523
1360  * Supports: 2.4 GHz
1361  */
1362 static const struct rf_channel rf_vals_bg_2523[] = {
1363         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1364         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1365         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1366         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1367         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1368         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1369         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1370         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1371         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1372         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1373         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1374         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1375         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1376         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1377 };
1378
1379 /*
1380  * RF value list for RF2524
1381  * Supports: 2.4 GHz
1382  */
1383 static const struct rf_channel rf_vals_bg_2524[] = {
1384         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1385         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1386         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1387         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1388         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1389         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1390         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1391         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1392         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1393         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1394         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1395         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1396         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1397         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1398 };
1399
1400 /*
1401  * RF value list for RF2525
1402  * Supports: 2.4 GHz
1403  */
1404 static const struct rf_channel rf_vals_bg_2525[] = {
1405         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1406         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1407         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1408         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1409         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1410         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1411         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1412         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1413         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1414         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1415         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1416         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1417         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1418         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1419 };
1420
1421 /*
1422  * RF value list for RF2525e
1423  * Supports: 2.4 GHz
1424  */
1425 static const struct rf_channel rf_vals_bg_2525e[] = {
1426         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1427         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1428         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1429         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1430         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1431         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1432         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1433         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1434         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1435         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1436         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1437         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1438         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1439         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1440 };
1441
1442 /*
1443  * RF value list for RF5222
1444  * Supports: 2.4 GHz & 5.2 GHz
1445  */
1446 static const struct rf_channel rf_vals_5222[] = {
1447         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1448         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1449         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1450         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1451         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1452         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1453         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1454         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1455         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1456         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1457         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1458         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1459         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1460         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1461
1462         /* 802.11 UNI / HyperLan 2 */
1463         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1464         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1465         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1466         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1467         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1468         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1469         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1470         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1471
1472         /* 802.11 HyperLan 2 */
1473         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1474         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1475         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1476         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1477         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1478         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1479         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1480         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1481         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1482         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1483
1484         /* 802.11 UNII */
1485         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1486         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1487         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1488         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1489         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1490 };
1491
1492 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1493 {
1494         struct hw_mode_spec *spec = &rt2x00dev->spec;
1495         u8 *txpower;
1496         unsigned int i;
1497
1498         /*
1499          * Initialize all hw fields.
1500          */
1501         rt2x00dev->hw->flags =
1502             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1503             IEEE80211_HW_RX_INCLUDES_FCS |
1504             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1505         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1506         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1507         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1508         rt2x00dev->hw->queues = 2;
1509
1510         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1511         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1512                                 rt2x00_eeprom_addr(rt2x00dev,
1513                                                    EEPROM_MAC_ADDR_0));
1514
1515         /*
1516          * Convert tx_power array in eeprom.
1517          */
1518         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1519         for (i = 0; i < 14; i++)
1520                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1521
1522         /*
1523          * Initialize hw_mode information.
1524          */
1525         spec->num_modes = 2;
1526         spec->num_rates = 12;
1527         spec->tx_power_a = NULL;
1528         spec->tx_power_bg = txpower;
1529         spec->tx_power_default = DEFAULT_TXPOWER;
1530
1531         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1532                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1533                 spec->channels = rf_vals_bg_2522;
1534         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1535                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1536                 spec->channels = rf_vals_bg_2523;
1537         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1538                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1539                 spec->channels = rf_vals_bg_2524;
1540         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1541                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1542                 spec->channels = rf_vals_bg_2525;
1543         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1544                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1545                 spec->channels = rf_vals_bg_2525e;
1546         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1547                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1548                 spec->channels = rf_vals_5222;
1549                 spec->num_modes = 3;
1550         }
1551 }
1552
1553 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1554 {
1555         int retval;
1556
1557         /*
1558          * Allocate eeprom data.
1559          */
1560         retval = rt2500usb_validate_eeprom(rt2x00dev);
1561         if (retval)
1562                 return retval;
1563
1564         retval = rt2500usb_init_eeprom(rt2x00dev);
1565         if (retval)
1566                 return retval;
1567
1568         /*
1569          * Initialize hw specifications.
1570          */
1571         rt2500usb_probe_hw_mode(rt2x00dev);
1572
1573         /*
1574          * This device requires the beacon ring
1575          */
1576         __set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
1577
1578         /*
1579          * Set the rssi offset.
1580          */
1581         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1582
1583         return 0;
1584 }
1585
1586 /*
1587  * IEEE80211 stack callback functions.
1588  */
1589 static void rt2500usb_configure_filter(struct ieee80211_hw *hw,
1590                                        unsigned int changed_flags,
1591                                        unsigned int *total_flags,
1592                                        int mc_count,
1593                                        struct dev_addr_list *mc_list)
1594 {
1595         struct rt2x00_dev *rt2x00dev = hw->priv;
1596         struct interface *intf = &rt2x00dev->interface;
1597         u16 reg;
1598
1599         /*
1600          * Mask off any flags we are going to ignore from
1601          * the total_flags field.
1602          */
1603         *total_flags &=
1604             FIF_ALLMULTI |
1605             FIF_FCSFAIL |
1606             FIF_PLCPFAIL |
1607             FIF_CONTROL |
1608             FIF_OTHER_BSS |
1609             FIF_PROMISC_IN_BSS;
1610
1611         /*
1612          * Apply some rules to the filters:
1613          * - Some filters imply different filters to be set.
1614          * - Some things we can't filter out at all.
1615          * - Some filters are set based on interface type.
1616          */
1617         if (mc_count)
1618                 *total_flags |= FIF_ALLMULTI;
1619         if (changed_flags & FIF_OTHER_BSS ||
1620             changed_flags & FIF_PROMISC_IN_BSS)
1621                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1622         if (is_interface_type(intf, IEEE80211_IF_TYPE_AP))
1623                 *total_flags |= FIF_PROMISC_IN_BSS;
1624
1625         /*
1626          * Check if there is any work left for us.
1627          */
1628         if (intf->filter == *total_flags)
1629                 return;
1630         intf->filter = *total_flags;
1631
1632         /*
1633          * When in atomic context, reschedule and let rt2x00lib
1634          * call this function again.
1635          */
1636         if (in_atomic()) {
1637                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1638                 return;
1639         }
1640
1641         /*
1642          * Start configuration steps.
1643          * Note that the version error will always be dropped
1644          * and broadcast frames will always be accepted since
1645          * there is no filter for it at this time.
1646          */
1647         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
1648         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
1649                            !(*total_flags & FIF_FCSFAIL));
1650         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
1651                            !(*total_flags & FIF_PLCPFAIL));
1652         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
1653                            !(*total_flags & FIF_CONTROL));
1654         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
1655                            !(*total_flags & FIF_PROMISC_IN_BSS));
1656         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
1657                            !(*total_flags & FIF_PROMISC_IN_BSS));
1658         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
1659         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
1660                            !(*total_flags & FIF_ALLMULTI));
1661         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
1662         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
1663 }
1664
1665 static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
1666                                    struct sk_buff *skb,
1667                                    struct ieee80211_tx_control *control)
1668 {
1669         struct rt2x00_dev *rt2x00dev = hw->priv;
1670         struct usb_device *usb_dev =
1671             interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
1672         struct data_ring *ring =
1673             rt2x00lib_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1674         struct data_entry *beacon;
1675         struct data_entry *guardian;
1676         int length;
1677
1678         /*
1679          * Just in case the ieee80211 doesn't set this,
1680          * but we need this queue set for the descriptor
1681          * initialization.
1682          */
1683         control->queue = IEEE80211_TX_QUEUE_BEACON;
1684
1685         /*
1686          * Obtain 2 entries, one for the guardian byte,
1687          * the second for the actual beacon.
1688          */
1689         guardian = rt2x00_get_data_entry(ring);
1690         rt2x00_ring_index_inc(ring);
1691         beacon = rt2x00_get_data_entry(ring);
1692
1693         /*
1694          * First we create the beacon.
1695          */
1696         skb_push(skb, ring->desc_size);
1697         rt2x00lib_write_tx_desc(rt2x00dev, (struct data_desc *)skb->data,
1698                                 (struct ieee80211_hdr *)(skb->data +
1699                                                          ring->desc_size),
1700                                 skb->len - ring->desc_size, control);
1701
1702         /*
1703          * Length passed to usb_fill_urb cannot be an odd number,
1704          * so add 1 byte to make it even.
1705          */
1706         length = skb->len;
1707         if (length % 2)
1708                 length++;
1709
1710         usb_fill_bulk_urb(beacon->priv, usb_dev,
1711                           usb_sndbulkpipe(usb_dev, 1),
1712                           skb->data, length, rt2500usb_beacondone, beacon);
1713
1714         beacon->skb = skb;
1715
1716         /*
1717          * Second we need to create the guardian byte.
1718          * We only need a single byte, so lets recycle
1719          * the 'flags' field we are not using for beacons.
1720          */
1721         guardian->flags = 0;
1722         usb_fill_bulk_urb(guardian->priv, usb_dev,
1723                           usb_sndbulkpipe(usb_dev, 1),
1724                           &guardian->flags, 1, rt2500usb_beacondone, guardian);
1725
1726         /*
1727          * Send out the guardian byte.
1728          */
1729         usb_submit_urb(guardian->priv, GFP_ATOMIC);
1730
1731         /*
1732          * Enable beacon generation.
1733          */
1734         rt2500usb_kick_tx_queue(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1735
1736         return 0;
1737 }
1738
1739 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1740         .tx                     = rt2x00mac_tx,
1741         .start                  = rt2x00mac_start,
1742         .stop                   = rt2x00mac_stop,
1743         .add_interface          = rt2x00mac_add_interface,
1744         .remove_interface       = rt2x00mac_remove_interface,
1745         .config                 = rt2x00mac_config,
1746         .config_interface       = rt2x00mac_config_interface,
1747         .configure_filter       = rt2500usb_configure_filter,
1748         .get_stats              = rt2x00mac_get_stats,
1749         .conf_tx                = rt2x00mac_conf_tx,
1750         .get_tx_stats           = rt2x00mac_get_tx_stats,
1751         .beacon_update          = rt2500usb_beacon_update,
1752 };
1753
1754 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1755         .probe_hw               = rt2500usb_probe_hw,
1756         .initialize             = rt2x00usb_initialize,
1757         .uninitialize           = rt2x00usb_uninitialize,
1758         .set_device_state       = rt2500usb_set_device_state,
1759         .link_stats             = rt2500usb_link_stats,
1760         .reset_tuner            = rt2500usb_reset_tuner,
1761         .link_tuner             = rt2500usb_link_tuner,
1762         .write_tx_desc          = rt2500usb_write_tx_desc,
1763         .write_tx_data          = rt2x00usb_write_tx_data,
1764         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1765         .fill_rxdone            = rt2500usb_fill_rxdone,
1766         .config_mac_addr        = rt2500usb_config_mac_addr,
1767         .config_bssid           = rt2500usb_config_bssid,
1768         .config_type            = rt2500usb_config_type,
1769         .config                 = rt2500usb_config,
1770 };
1771
1772 static const struct rt2x00_ops rt2500usb_ops = {
1773         .name           = DRV_NAME,
1774         .rxd_size       = RXD_DESC_SIZE,
1775         .txd_size       = TXD_DESC_SIZE,
1776         .eeprom_size    = EEPROM_SIZE,
1777         .rf_size        = RF_SIZE,
1778         .lib            = &rt2500usb_rt2x00_ops,
1779         .hw             = &rt2500usb_mac80211_ops,
1780 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1781         .debugfs        = &rt2500usb_rt2x00debug,
1782 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1783 };
1784
1785 /*
1786  * rt2500usb module information.
1787  */
1788 static struct usb_device_id rt2500usb_device_table[] = {
1789         /* ASUS */
1790         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1791         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1792         /* Belkin */
1793         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1794         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1795         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1796         /* Cisco Systems */
1797         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1798         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1799         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1800         /* Conceptronic */
1801         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1802         /* D-LINK */
1803         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1804         /* Gigabyte */
1805         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1806         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1807         /* Hercules */
1808         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1809         /* Melco */
1810         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1811         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1812         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1813         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1814
1815         /* MSI */
1816         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1817         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1818         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1819         /* Ralink */
1820         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1821         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1822         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1823         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1824         /* Siemens */
1825         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1826         /* SMC */
1827         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1828         /* Spairon */
1829         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1830         /* Trust */
1831         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1832         /* Zinwell */
1833         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1834         { 0, }
1835 };
1836
1837 MODULE_AUTHOR(DRV_PROJECT);
1838 MODULE_VERSION(DRV_VERSION);
1839 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1840 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1841 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1842 MODULE_LICENSE("GPL");
1843
1844 static struct usb_driver rt2500usb_driver = {
1845         .name           = DRV_NAME,
1846         .id_table       = rt2500usb_device_table,
1847         .probe          = rt2x00usb_probe,
1848         .disconnect     = rt2x00usb_disconnect,
1849         .suspend        = rt2x00usb_suspend,
1850         .resume         = rt2x00usb_resume,
1851 };
1852
1853 static int __init rt2500usb_init(void)
1854 {
1855         return usb_register(&rt2500usb_driver);
1856 }
1857
1858 static void __exit rt2500usb_exit(void)
1859 {
1860         usb_deregister(&rt2500usb_driver);
1861 }
1862
1863 module_init(rt2500usb_init);
1864 module_exit(rt2500usb_exit);