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,
 258                                       __le32 *mac)
 259 {
 260         rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, &mac,
 261                                       (3 * sizeof(__le16)));
 262 }
 263
 264 static void rt2500usb_config_bssid(struct rt2x00_dev *rt2x00dev,
 265                                    __le32 *bssid)
 266 {
 267         rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, bssid,
 268                                       (3 * sizeof(__le16)));
 269 }
 270
 271 static void rt2500usb_config_type(struct rt2x00_dev *rt2x00dev, const int type,
 272                                   const int tsf_sync)
 273 {
 274         u16 reg;
 275
 276         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 277
 278         /*
 279          * Enable beacon config
 280          */
 281         rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
 282         rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET,
 283                            (PREAMBLE + get_duration(IEEE80211_HEADER, 20)) >> 6);
 284         if (type == IEEE80211_IF_TYPE_STA)
 285                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW, 0);
 286         else
 287                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW, 2);
 288         rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
 289
 290         /*
 291          * Enable synchronisation.
 292          */
 293         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 294         rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
 295         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 296
 297         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 298         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
 299         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
 300         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
 301         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, tsf_sync);
 302         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 303 }
 304
 305 static void rt2500usb_config_rate(struct rt2x00_dev *rt2x00dev, const int rate)
 306 {
 307         struct ieee80211_conf *conf = &rt2x00dev->hw->conf;
 308         u16 reg;
 309         u16 value;
 310         u16 preamble;
 311
 312         if (DEVICE_GET_RATE_FIELD(rate, PREAMBLE))
 313                 preamble = SHORT_PREAMBLE;
 314         else
 315                 preamble = PREAMBLE;
 316
 317         reg = DEVICE_GET_RATE_FIELD(rate, RATEMASK) & DEV_BASIC_RATEMASK;
 318
 319         rt2500usb_register_write(rt2x00dev, TXRX_CSR11, reg);
 320
 321         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 322         value = ((conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) ?
 323                  SHORT_DIFS : DIFS) +
 324             PLCP + preamble + get_duration(ACK_SIZE, 10);
 325         rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, value);
 326         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 327
 328         rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
 329         rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
 330                            (preamble == SHORT_PREAMBLE));
 331         rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
 332 }
 333
 334 static void rt2500usb_config_phymode(struct rt2x00_dev *rt2x00dev,
 335                                      const int phymode)
 336 {
 337         struct ieee80211_hw_mode *mode;
 338         struct ieee80211_rate *rate;
 339
 340         if (phymode == MODE_IEEE80211A)
 341                 rt2x00dev->curr_hwmode = HWMODE_A;
 342         else if (phymode == MODE_IEEE80211B)
 343                 rt2x00dev->curr_hwmode = HWMODE_B;
 344         else
 345                 rt2x00dev->curr_hwmode = HWMODE_G;
 346
 347         mode = &rt2x00dev->hwmodes[rt2x00dev->curr_hwmode];
 348         rate = &mode->rates[mode->num_rates - 1];
 349
 350         rt2500usb_config_rate(rt2x00dev, rate->val2);
 351
 352         if (phymode == MODE_IEEE80211B) {
 353                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x000b);
 354                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x0040);
 355         } else {
 356                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0005);
 357                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x016c);
 358         }
 359 }
 360
 361 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
 362                                      const int index, const int channel,
 363                                      const int txpower)
 364 {
 365         struct rf_channel reg;
 366
 367         /*
 368          * Fill rf_reg structure.
 369          */
 370         memcpy(&reg, &rt2x00dev->spec.channels[index], sizeof(reg));
 371
 372         /*
 373          * Set TXpower.
 374          */
 375         rt2x00_set_field32(&reg.rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 376
 377         /*
 378          * For RT2525E we should first set the channel to half band higher.
 379          */
 380         if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
 381                 static const u32 vals[] = {
 382                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
 383                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
 384                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
 385                         0x00000902, 0x00000906
 386                 };
 387
 388                 rt2500usb_rf_write(rt2x00dev, 2, vals[channel - 1]);
 389                 if (reg.rf4)
 390                         rt2500usb_rf_write(rt2x00dev, 4, reg.rf4);
 391         }
 392
 393         rt2500usb_rf_write(rt2x00dev, 1, reg.rf1);
 394         rt2500usb_rf_write(rt2x00dev, 2, reg.rf2);
 395         rt2500usb_rf_write(rt2x00dev, 3, reg.rf3);
 396         if (reg.rf4)
 397                 rt2500usb_rf_write(rt2x00dev, 4, reg.rf4);
 398 }
 399
 400 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
 401                                      const int txpower)
 402 {
 403         u32 rf3;
 404
 405         rt2x00_rf_read(rt2x00dev, 3, &rf3);
 406         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 407         rt2500usb_rf_write(rt2x00dev, 3, rf3);
 408 }
 409
 410 static void rt2500usb_config_antenna(struct rt2x00_dev *rt2x00dev,
 411                                      const int antenna_tx, const int antenna_rx)
 412 {
 413         u8 r2;
 414         u8 r14;
 415         u16 csr5;
 416         u16 csr6;
 417
 418         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
 419         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
 420         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
 421         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
 422
 423         /*
 424          * Configure the TX antenna.
 425          */
 426         switch (antenna_tx) {
 427         case ANTENNA_SW_DIVERSITY:
 428         case ANTENNA_HW_DIVERSITY:
 429                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
 430                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
 431                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
 432                 break;
 433         case ANTENNA_A:
 434                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
 435                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
 436                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
 437                 break;
 438         case ANTENNA_B:
 439                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
 440                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
 441                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
 442                 break;
 443         }
 444
 445         /*
 446          * Configure the RX antenna.
 447          */
 448         switch (antenna_rx) {
 449         case ANTENNA_SW_DIVERSITY:
 450         case ANTENNA_HW_DIVERSITY:
 451                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
 452                 break;
 453         case ANTENNA_A:
 454                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
 455                 break;
 456         case ANTENNA_B:
 457                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
 458                 break;
 459         }
 460
 461         /*
 462          * RT2525E and RT5222 need to flip TX I/Q
 463          */
 464         if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
 465             rt2x00_rf(&rt2x00dev->chip, RF5222)) {
 466                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
 467                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
 468                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
 469
 470                 /*
 471                  * RT2525E does not need RX I/Q Flip.
 472                  */
 473                 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
 474                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
 475         } else {
 476                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
 477                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
 478         }
 479
 480         rt2500usb_bbp_write(rt2x00dev, 2, r2);
 481         rt2500usb_bbp_write(rt2x00dev, 14, r14);
 482         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
 483         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
 484 }
 485
 486 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
 487                                       const int short_slot_time,
 488                                       const int beacon_int)
 489 {
 490         u16 reg;
 491
 492         rt2500usb_register_write(rt2x00dev, MAC_CSR10,
 493                                  short_slot_time ? SHORT_SLOT_TIME : SLOT_TIME);
 494
 495         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 496         rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL, beacon_int * 4);
 497         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 498 }
 499
 500 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
 501                              const unsigned int flags,
 502                              struct ieee80211_conf *conf)
 503 {
 504         int short_slot_time = conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME;
 505
 506         if (flags & CONFIG_UPDATE_PHYMODE)
 507                 rt2500usb_config_phymode(rt2x00dev, conf->phymode);
 508         if (flags & CONFIG_UPDATE_CHANNEL)
 509                 rt2500usb_config_channel(rt2x00dev, conf->channel_val,
 510                                          conf->channel, conf->power_level);
 511         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
 512                 rt2500usb_config_txpower(rt2x00dev, conf->power_level);
 513         if (flags & CONFIG_UPDATE_ANTENNA)
 514                 rt2500usb_config_antenna(rt2x00dev, conf->antenna_sel_tx,
 515                                          conf->antenna_sel_rx);
 516         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
 517                 rt2500usb_config_duration(rt2x00dev, short_slot_time,
 518                                           conf->beacon_int);
 519 }
 520
 521 /*
 522  * LED functions.
 523  */
 524 static void rt2500usb_enable_led(struct rt2x00_dev *rt2x00dev)
 525 {
 526         u16 reg;
 527
 528         rt2500usb_register_read(rt2x00dev, MAC_CSR21, &reg);
 529         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, 70);
 530         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, 30);
 531         rt2500usb_register_write(rt2x00dev, MAC_CSR21, reg);
 532
 533         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 534
 535         if (rt2x00dev->led_mode == LED_MODE_TXRX_ACTIVITY) {
 536                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 1);
 537                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 538         } else if (rt2x00dev->led_mode == LED_MODE_ASUS) {
 539                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 540                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 1);
 541         } else {
 542                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 1);
 543                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 1);
 544         }
 545
 546         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 547 }
 548
 549 static void rt2500usb_disable_led(struct rt2x00_dev *rt2x00dev)
 550 {
 551         u16 reg;
 552
 553         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 554         rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 555         rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 556         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 557 }
 558
 559 /*
 560  * Link tuning
 561  */
 562 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev)
 563 {
 564         u16 reg;
 565
 566         /*
 567          * Update FCS error count from register.
 568          */
 569         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
 570         rt2x00dev->link.rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
 571
 572         /*
 573          * Update False CCA count from register.
 574          */
 575         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
 576         rt2x00dev->link.false_cca =
 577             rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
 578 }
 579
 580 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
 581 {
 582         u16 eeprom;
 583         u16 value;
 584
 585         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
 586         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
 587         rt2500usb_bbp_write(rt2x00dev, 24, value);
 588
 589         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
 590         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
 591         rt2500usb_bbp_write(rt2x00dev, 25, value);
 592
 593         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
 594         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
 595         rt2500usb_bbp_write(rt2x00dev, 61, value);
 596
 597         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
 598         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
 599         rt2500usb_bbp_write(rt2x00dev, 17, value);
 600
 601         rt2x00dev->link.vgc_level = value;
 602 }
 603
 604 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
 605 {
 606         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
 607         u16 bbp_thresh;
 608         u16 vgc_bound;
 609         u16 sens;
 610         u16 r24;
 611         u16 r25;
 612         u16 r61;
 613         u16 r17_sens;
 614         u8 r17;
 615         u8 up_bound;
 616         u8 low_bound;
 617
 618         /*
 619          * Determine the BBP tuning threshold and correctly
 620          * set BBP 24, 25 and 61.
 621          */
 622         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
 623         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
 624
 625         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
 626         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
 627         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
 628
 629         if ((rssi + bbp_thresh) > 0) {
 630                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
 631                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
 632                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
 633         } else {
 634                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
 635                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
 636                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
 637         }
 638
 639         rt2500usb_bbp_write(rt2x00dev, 24, r24);
 640         rt2500usb_bbp_write(rt2x00dev, 25, r25);
 641         rt2500usb_bbp_write(rt2x00dev, 61, r61);
 642
 643         /*
 644          * Read current r17 value, as well as the sensitivity values
 645          * for the r17 register.
 646          */
 647         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
 648         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
 649
 650         /*
 651          * A too low RSSI will cause too much false CCA which will
 652          * then corrupt the R17 tuning. To remidy this the tuning should
 653          * be stopped (While making sure the R17 value will not exceed limits)
 654          */
 655         if (rssi >= -40) {
 656                 if (r17 != 0x60)
 657                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
 658                 return;
 659         }
 660
 661         /*
 662          * Special big-R17 for short distance
 663          */
 664         if (rssi >= -58) {
 665                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
 666                 if (r17 != sens)
 667                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 668                 return;
 669         }
 670
 671         /*
 672          * Special mid-R17 for middle distance
 673          */
 674         if (rssi >= -74) {
 675                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
 676                 if (r17 != sens)
 677                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 678                 return;
 679         }
 680
 681         /*
 682          * Leave short or middle distance condition, restore r17
 683          * to the dynamic tuning range.
 684          */
 685         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
 686         vgc_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
 687
 688         low_bound = 0x32;
 689         if (rssi >= -77)
 690                 up_bound = vgc_bound;
 691         else
 692                 up_bound = vgc_bound - (-77 - rssi);
 693
 694         if (up_bound < low_bound)
 695                 up_bound = low_bound;
 696
 697         if (r17 > up_bound) {
 698                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
 699                 rt2x00dev->link.vgc_level = up_bound;
 700         } else if (rt2x00dev->link.false_cca > 512 && r17 < up_bound) {
 701                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
 702                 rt2x00dev->link.vgc_level = r17;
 703         } else if (rt2x00dev->link.false_cca < 100 && r17 > low_bound) {
 704                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
 705                 rt2x00dev->link.vgc_level = r17;
 706         }
 707 }
 708
 709 /*
 710  * Initialization functions.
 711  */
 712 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
 713 {
 714         u16 reg;
 715
 716         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
 717                                     USB_MODE_TEST, REGISTER_TIMEOUT);
 718         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
 719                                     0x00f0, REGISTER_TIMEOUT);
 720
 721         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 722         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 723         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 724
 725         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
 726         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
 727
 728         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 729         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
 730         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
 731         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 732         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 733
 734         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 735         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 736         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 737         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 738         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 739
 740         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
 741         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
 742         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
 743         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
 744         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
 745         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
 746
 747         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
 748         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
 749         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
 750         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
 751         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
 752         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
 753
 754         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 755         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
 756         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
 757         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
 758         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
 759         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 760
 761         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 762         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
 763         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
 764         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
 765         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
 766         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 767
 768         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
 769         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
 770
 771         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 772                 return -EBUSY;
 773
 774         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 775         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 776         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 777         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
 778         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 779
 780         if (rt2x00_get_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
 781                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
 782                 reg &= ~0x0002;
 783         } else {
 784                 reg = 0x3002;
 785         }
 786         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
 787
 788         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
 789         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
 790         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
 791         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
 792
 793         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 794         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
 795                            rt2x00dev->rx->data_size);
 796         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
 797
 798         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 799         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 800         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
 801         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 802
 803         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 804         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
 805         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 806
 807         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
 808         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
 809         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
 810
 811         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 812         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
 813         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 814
 815         return 0;
 816 }
 817
 818 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
 819 {
 820         unsigned int i;
 821         u16 eeprom;
 822         u8 value;
 823         u8 reg_id;
 824
 825         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 826                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
 827                 if ((value != 0xff) && (value != 0x00))
 828                         goto continue_csr_init;
 829                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
 830                 udelay(REGISTER_BUSY_DELAY);
 831         }
 832
 833         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
 834         return -EACCES;
 835
 836 continue_csr_init:
 837         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
 838         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
 839         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
 840         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
 841         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
 842         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
 843         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
 844         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
 845         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
 846         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
 847         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
 848         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
 849         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
 850         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
 851         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
 852         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
 853         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
 854         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
 855         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
 856         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
 857         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
 858         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
 859         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
 860         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
 861         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
 862         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
 863         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
 864         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
 865         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
 866         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
 867         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
 868
 869         DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
 870         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 871                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 872
 873                 if (eeprom != 0xffff && eeprom != 0x0000) {
 874                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 875                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 876                         DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
 877                               reg_id, value);
 878                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
 879                 }
 880         }
 881         DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
 882
 883         return 0;
 884 }
 885
 886 /*
 887  * Device state switch handlers.
 888  */
 889 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
 890                                 enum dev_state state)
 891 {
 892         u16 reg;
 893
 894         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 895         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
 896                            state == STATE_RADIO_RX_OFF);
 897         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 898 }
 899
 900 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
 901 {
 902         /*
 903          * Initialize all registers.
 904          */
 905         if (rt2500usb_init_registers(rt2x00dev) ||
 906             rt2500usb_init_bbp(rt2x00dev)) {
 907                 ERROR(rt2x00dev, "Register initialization failed.\n");
 908                 return -EIO;
 909         }
 910
 911         rt2x00usb_enable_radio(rt2x00dev);
 912
 913         /*
 914          * Enable LED
 915          */
 916         rt2500usb_enable_led(rt2x00dev);
 917
 918         return 0;
 919 }
 920
 921 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
 922 {
 923         /*
 924          * Disable LED
 925          */
 926         rt2500usb_disable_led(rt2x00dev);
 927
 928         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
 929         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
 930
 931         /*
 932          * Disable synchronisation.
 933          */
 934         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 935
 936         rt2x00usb_disable_radio(rt2x00dev);
 937 }
 938
 939 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
 940                                enum dev_state state)
 941 {
 942         u16 reg;
 943         u16 reg2;
 944         unsigned int i;
 945         char put_to_sleep;
 946         char bbp_state;
 947         char rf_state;
 948
 949         put_to_sleep = (state != STATE_AWAKE);
 950
 951         reg = 0;
 952         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
 953         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
 954         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
 955         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 956         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
 957         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 958
 959         /*
 960          * Device is not guaranteed to be in the requested state yet.
 961          * We must wait until the register indicates that the
 962          * device has entered the correct state.
 963          */
 964         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 965                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
 966                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
 967                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
 968                 if (bbp_state == state && rf_state == state)
 969                         return 0;
 970                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 971                 msleep(30);
 972         }
 973
 974         NOTICE(rt2x00dev, "Device failed to enter state %d, "
 975                "current device state: bbp %d and rf %d.\n",
 976                state, bbp_state, rf_state);
 977
 978         return -EBUSY;
 979 }
 980
 981 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
 982                                       enum dev_state state)
 983 {
 984         int retval = 0;
 985
 986         switch (state) {
 987         case STATE_RADIO_ON:
 988                 retval = rt2500usb_enable_radio(rt2x00dev);
 989                 break;
 990         case STATE_RADIO_OFF:
 991                 rt2500usb_disable_radio(rt2x00dev);
 992                 break;
 993         case STATE_RADIO_RX_ON:
 994         case STATE_RADIO_RX_OFF:
 995                 rt2500usb_toggle_rx(rt2x00dev, state);
 996                 break;
 997         case STATE_DEEP_SLEEP:
 998         case STATE_SLEEP:
 999         case STATE_STANDBY:
1000         case STATE_AWAKE:
1001                 retval = rt2500usb_set_state(rt2x00dev, state);
1002                 break;
1003         default:
1004                 retval = -ENOTSUPP;
1005                 break;
1006         }
1007
1008         return retval;
1009 }
1010
1011 /*
1012  * TX descriptor initialization
1013  */
1014 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1015                                     struct data_desc *txd,
1016                                     struct txdata_entry_desc *desc,
1017                                     struct ieee80211_hdr *ieee80211hdr,
1018                                     unsigned int length,
1019                                     struct ieee80211_tx_control *control)
1020 {
1021         u32 word;
1022
1023         /*
1024          * Start writing the descriptor words.
1025          */
1026         rt2x00_desc_read(txd, 1, &word);
1027         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1028         rt2x00_set_field32(&word, TXD_W1_AIFS, desc->aifs);
1029         rt2x00_set_field32(&word, TXD_W1_CWMIN, desc->cw_min);
1030         rt2x00_set_field32(&word, TXD_W1_CWMAX, desc->cw_max);
1031         rt2x00_desc_write(txd, 1, word);
1032
1033         rt2x00_desc_read(txd, 2, &word);
1034         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, desc->signal);
1035         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, desc->service);
1036         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, desc->length_low);
1037         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, desc->length_high);
1038         rt2x00_desc_write(txd, 2, word);
1039
1040         rt2x00_desc_read(txd, 0, &word);
1041         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, control->retry_limit);
1042         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1043                            test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
1044         rt2x00_set_field32(&word, TXD_W0_ACK,
1045                            !(control->flags & IEEE80211_TXCTL_NO_ACK));
1046         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1047                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
1048         rt2x00_set_field32(&word, TXD_W0_OFDM,
1049                            test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
1050         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1051                            !!(control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT));
1052         rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
1053         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, length);
1054         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1055         rt2x00_desc_write(txd, 0, word);
1056 }
1057
1058 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1059                                      int maxpacket, struct sk_buff *skb)
1060 {
1061         int length;
1062
1063         /*
1064          * The length _must_ be a multiple of 2,
1065          * but it must _not_ be a multiple of the USB packet size.
1066          */
1067         length = roundup(skb->len, 2);
1068         length += (2 * !(length % maxpacket));
1069
1070         return length;
1071 }
1072
1073 /*
1074  * TX data initialization
1075  */
1076 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1077                                     unsigned int queue)
1078 {
1079         u16 reg;
1080
1081         if (queue != IEEE80211_TX_QUEUE_BEACON)
1082                 return;
1083
1084         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1085         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1086                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1087                 /*
1088                  * Beacon generation will fail initially.
1089                  * To prevent this we need to register the TXRX_CSR19
1090                  * register several times.
1091                  */
1092                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1093                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1094                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1095                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1096                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1097         }
1098 }
1099
1100 /*
1101  * RX control handlers
1102  */
1103 static void rt2500usb_fill_rxdone(struct data_entry *entry,
1104                                   struct rxdata_entry_desc *desc)
1105 {
1106         struct urb *urb = entry->priv;
1107         struct data_desc *rxd = (struct data_desc *)(entry->skb->data +
1108                                                      (urb->actual_length -
1109                                                       entry->ring->desc_size));
1110         u32 word0;
1111         u32 word1;
1112
1113         rt2x00_desc_read(rxd, 0, &word0);
1114         rt2x00_desc_read(rxd, 1, &word1);
1115
1116         desc->flags = 0;
1117         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1118                 desc->flags |= RX_FLAG_FAILED_FCS_CRC;
1119         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1120                 desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1121
1122         /*
1123          * Obtain the status about this packet.
1124          */
1125         desc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1126         desc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1127             entry->ring->rt2x00dev->rssi_offset;
1128         desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1129         desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1130
1131         return;
1132 }
1133
1134 /*
1135  * Interrupt functions.
1136  */
1137 static void rt2500usb_beacondone(struct urb *urb)
1138 {
1139         struct data_entry *entry = (struct data_entry *)urb->context;
1140         struct data_ring *ring = entry->ring;
1141
1142         if (!test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags))
1143                 return;
1144
1145         /*
1146          * Check if this was the guardian beacon,
1147          * if that was the case we need to send the real beacon now.
1148          * Otherwise we should free the sk_buffer, the device
1149          * should be doing the rest of the work now.
1150          */
1151         if (ring->index == 1) {
1152                 rt2x00_ring_index_done_inc(ring);
1153                 entry = rt2x00_get_data_entry(ring);
1154                 usb_submit_urb(entry->priv, GFP_ATOMIC);
1155                 rt2x00_ring_index_inc(ring);
1156         } else if (ring->index_done == 1) {
1157                 entry = rt2x00_get_data_entry_done(ring);
1158                 if (entry->skb) {
1159                         dev_kfree_skb(entry->skb);
1160                         entry->skb = NULL;
1161                 }
1162                 rt2x00_ring_index_done_inc(ring);
1163         }
1164 }
1165
1166 /*
1167  * Device probe functions.
1168  */
1169 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1170 {
1171         u16 word;
1172         u8 *mac;
1173
1174         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1175
1176         /*
1177          * Start validation of the data that has been read.
1178          */
1179         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1180         if (!is_valid_ether_addr(mac)) {
1181                 DECLARE_MAC_BUF(macbuf);
1182
1183                 random_ether_addr(mac);
1184                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1185         }
1186
1187         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1188         if (word == 0xffff) {
1189                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1190                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT, 0);
1191                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT, 0);
1192                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE, 0);
1193                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1194                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1195                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1196                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1197                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1198         }
1199
1200         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1201         if (word == 0xffff) {
1202                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1203                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1204                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1205                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1206                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1207         }
1208
1209         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1210         if (word == 0xffff) {
1211                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1212                                    DEFAULT_RSSI_OFFSET);
1213                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1214                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1215         }
1216
1217         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1218         if (word == 0xffff) {
1219                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1220                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1221                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1222         }
1223
1224         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1225         if (word == 0xffff) {
1226                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1227                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1228                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1229         }
1230
1231         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1232         if (word == 0xffff) {
1233                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1234                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1235                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1236                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1237         }
1238
1239         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1240         if (word == 0xffff) {
1241                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1242                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1243                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1244                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1245         }
1246
1247         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1248         if (word == 0xffff) {
1249                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1250                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1251                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1252                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1253         }
1254
1255         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1256         if (word == 0xffff) {
1257                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1258                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1259                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1260                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1261         }
1262
1263         return 0;
1264 }
1265
1266 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1267 {
1268         u16 reg;
1269         u16 value;
1270         u16 eeprom;
1271
1272         /*
1273          * Read EEPROM word for configuration.
1274          */
1275         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1276
1277         /*
1278          * Identify RF chipset.
1279          */
1280         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1281         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1282         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1283
1284         if (rt2x00_rev(&rt2x00dev->chip, 0xffff0)) {
1285                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1286                 return -ENODEV;
1287         }
1288
1289         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1290             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1291             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1292             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1293             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1294             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1295                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1296                 return -ENODEV;
1297         }
1298
1299         /*
1300          * Identify default antenna configuration.
1301          */
1302         rt2x00dev->hw->conf.antenna_sel_tx =
1303             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1304         rt2x00dev->hw->conf.antenna_sel_rx =
1305             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1306
1307         /*
1308          * Store led mode, for correct led behaviour.
1309          */
1310         rt2x00dev->led_mode =
1311             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1312
1313         /*
1314          * Check if the BBP tuning should be disabled.
1315          */
1316         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1317         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1318                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1319
1320         /*
1321          * Read the RSSI <-> dBm offset information.
1322          */
1323         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1324         rt2x00dev->rssi_offset =
1325             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1326
1327         return 0;
1328 }
1329
1330 /*
1331  * RF value list for RF2522
1332  * Supports: 2.4 GHz
1333  */
1334 static const struct rf_channel rf_vals_bg_2522[] = {
1335         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1336         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1337         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1338         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1339         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1340         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1341         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1342         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1343         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1344         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1345         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1346         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1347         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1348         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1349 };
1350
1351 /*
1352  * RF value list for RF2523
1353  * Supports: 2.4 GHz
1354  */
1355 static const struct rf_channel rf_vals_bg_2523[] = {
1356         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1357         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1358         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1359         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1360         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1361         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1362         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1363         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1364         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1365         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1366         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1367         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1368         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1369         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1370 };
1371
1372 /*
1373  * RF value list for RF2524
1374  * Supports: 2.4 GHz
1375  */
1376 static const struct rf_channel rf_vals_bg_2524[] = {
1377         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1378         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1379         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1380         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1381         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1382         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1383         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1384         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1385         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1386         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1387         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1388         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1389         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1390         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1391 };
1392
1393 /*
1394  * RF value list for RF2525
1395  * Supports: 2.4 GHz
1396  */
1397 static const struct rf_channel rf_vals_bg_2525[] = {
1398         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1399         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1400         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1401         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1402         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1403         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1404         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1405         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1406         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1407         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1408         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1409         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1410         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1411         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1412 };
1413
1414 /*
1415  * RF value list for RF2525e
1416  * Supports: 2.4 GHz
1417  */
1418 static const struct rf_channel rf_vals_bg_2525e[] = {
1419         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1420         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1421         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1422         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1423         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1424         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1425         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1426         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1427         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1428         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1429         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1430         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1431         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1432         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1433 };
1434
1435 /*
1436  * RF value list for RF5222
1437  * Supports: 2.4 GHz & 5.2 GHz
1438  */
1439 static const struct rf_channel rf_vals_5222[] = {
1440         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1441         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1442         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1443         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1444         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1445         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1446         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1447         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1448         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1449         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1450         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1451         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1452         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1453         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1454
1455         /* 802.11 UNI / HyperLan 2 */
1456         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1457         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1458         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1459         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1460         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1461         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1462         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1463         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1464
1465         /* 802.11 HyperLan 2 */
1466         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1467         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1468         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1469         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1470         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1471         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1472         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1473         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1474         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1475         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1476
1477         /* 802.11 UNII */
1478         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1479         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1480         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1481         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1482         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1483 };
1484
1485 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1486 {
1487         struct hw_mode_spec *spec = &rt2x00dev->spec;
1488         u8 *txpower;
1489         unsigned int i;
1490
1491         /*
1492          * Initialize all hw fields.
1493          */
1494         rt2x00dev->hw->flags =
1495             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1496             IEEE80211_HW_RX_INCLUDES_FCS |
1497             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1498         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1499         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1500         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1501         rt2x00dev->hw->queues = 2;
1502
1503         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1504         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1505                                 rt2x00_eeprom_addr(rt2x00dev,
1506                                                    EEPROM_MAC_ADDR_0));
1507
1508         /*
1509          * Convert tx_power array in eeprom.
1510          */
1511         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1512         for (i = 0; i < 14; i++)
1513                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1514
1515         /*
1516          * Initialize hw_mode information.
1517          */
1518         spec->num_modes = 2;
1519         spec->num_rates = 12;
1520         spec->tx_power_a = NULL;
1521         spec->tx_power_bg = txpower;
1522         spec->tx_power_default = DEFAULT_TXPOWER;
1523
1524         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1525                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1526                 spec->channels = rf_vals_bg_2522;
1527         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1528                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1529                 spec->channels = rf_vals_bg_2523;
1530         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1531                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1532                 spec->channels = rf_vals_bg_2524;
1533         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1534                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1535                 spec->channels = rf_vals_bg_2525;
1536         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1537                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1538                 spec->channels = rf_vals_bg_2525e;
1539         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1540                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1541                 spec->channels = rf_vals_5222;
1542                 spec->num_modes = 3;
1543         }
1544 }
1545
1546 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1547 {
1548         int retval;
1549
1550         /*
1551          * Allocate eeprom data.
1552          */
1553         retval = rt2500usb_validate_eeprom(rt2x00dev);
1554         if (retval)
1555                 return retval;
1556
1557         retval = rt2500usb_init_eeprom(rt2x00dev);
1558         if (retval)
1559                 return retval;
1560
1561         /*
1562          * Initialize hw specifications.
1563          */
1564         rt2500usb_probe_hw_mode(rt2x00dev);
1565
1566         /*
1567          * This device requires the beacon ring
1568          */
1569         __set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
1570
1571         /*
1572          * Set the rssi offset.
1573          */
1574         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1575
1576         return 0;
1577 }
1578
1579 /*
1580  * IEEE80211 stack callback functions.
1581  */
1582 static void rt2500usb_configure_filter(struct ieee80211_hw *hw,
1583                                        unsigned int changed_flags,
1584                                        unsigned int *total_flags,
1585                                        int mc_count,
1586                                        struct dev_addr_list *mc_list)
1587 {
1588         struct rt2x00_dev *rt2x00dev = hw->priv;
1589         struct interface *intf = &rt2x00dev->interface;
1590         u16 reg;
1591
1592         /*
1593          * Mask off any flags we are going to ignore from
1594          * the total_flags field.
1595          */
1596         *total_flags &=
1597             FIF_ALLMULTI |
1598             FIF_FCSFAIL |
1599             FIF_PLCPFAIL |
1600             FIF_CONTROL |
1601             FIF_OTHER_BSS |
1602             FIF_PROMISC_IN_BSS;
1603
1604         /*
1605          * Apply some rules to the filters:
1606          * - Some filters imply different filters to be set.
1607          * - Some things we can't filter out at all.
1608          * - Some filters are set based on interface type.
1609          */
1610         if (mc_count)
1611                 *total_flags |= FIF_ALLMULTI;
1612         if (*total_flags & FIF_OTHER_BSS ||
1613             *total_flags & FIF_PROMISC_IN_BSS)
1614                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1615         if (is_interface_type(intf, IEEE80211_IF_TYPE_AP))
1616                 *total_flags |= FIF_PROMISC_IN_BSS;
1617
1618         /*
1619          * Check if there is any work left for us.
1620          */
1621         if (intf->filter == *total_flags)
1622                 return;
1623         intf->filter = *total_flags;
1624
1625         /*
1626          * When in atomic context, reschedule and let rt2x00lib
1627          * call this function again.
1628          */
1629         if (in_atomic()) {
1630                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1631                 return;
1632         }
1633
1634         /*
1635          * Start configuration steps.
1636          * Note that the version error will always be dropped
1637          * and broadcast frames will always be accepted since
1638          * there is no filter for it at this time.
1639          */
1640         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
1641         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
1642                            !(*total_flags & FIF_FCSFAIL));
1643         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
1644                            !(*total_flags & FIF_PLCPFAIL));
1645         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
1646                            !(*total_flags & FIF_CONTROL));
1647         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
1648                            !(*total_flags & FIF_PROMISC_IN_BSS));
1649         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
1650                            !(*total_flags & FIF_PROMISC_IN_BSS));
1651         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
1652         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
1653                            !(*total_flags & FIF_ALLMULTI));
1654         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
1655         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
1656 }
1657
1658 static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
1659                                    struct sk_buff *skb,
1660                                    struct ieee80211_tx_control *control)
1661 {
1662         struct rt2x00_dev *rt2x00dev = hw->priv;
1663         struct usb_device *usb_dev =
1664             interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
1665         struct data_ring *ring =
1666             rt2x00lib_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1667         struct data_entry *beacon;
1668         struct data_entry *guardian;
1669         int pipe = usb_sndbulkpipe(usb_dev, 1);
1670         int max_packet = usb_maxpacket(usb_dev, pipe, 1);
1671         int length;
1672
1673         /*
1674          * Just in case the ieee80211 doesn't set this,
1675          * but we need this queue set for the descriptor
1676          * initialization.
1677          */
1678         control->queue = IEEE80211_TX_QUEUE_BEACON;
1679
1680         /*
1681          * Obtain 2 entries, one for the guardian byte,
1682          * the second for the actual beacon.
1683          */
1684         guardian = rt2x00_get_data_entry(ring);
1685         rt2x00_ring_index_inc(ring);
1686         beacon = rt2x00_get_data_entry(ring);
1687
1688         /*
1689          * First we create the beacon.
1690          */
1691         skb_push(skb, ring->desc_size);
1692         rt2x00lib_write_tx_desc(rt2x00dev, (struct data_desc *)skb->data,
1693                                 (struct ieee80211_hdr *)(skb->data +
1694                                                          ring->desc_size),
1695                                 skb->len - ring->desc_size, control);
1696
1697         length = rt2500usb_get_tx_data_len(rt2x00dev, max_packet, skb);
1698
1699         usb_fill_bulk_urb(beacon->priv, usb_dev, pipe,
1700                           skb->data, length, rt2500usb_beacondone, beacon);
1701
1702         beacon->skb = skb;
1703
1704         /*
1705          * Second we need to create the guardian byte.
1706          * We only need a single byte, so lets recycle
1707          * the 'flags' field we are not using for beacons.
1708          */
1709         guardian->flags = 0;
1710         usb_fill_bulk_urb(guardian->priv, usb_dev, pipe,
1711                           &guardian->flags, 1, rt2500usb_beacondone, guardian);
1712
1713         /*
1714          * Send out the guardian byte.
1715          */
1716         usb_submit_urb(guardian->priv, GFP_ATOMIC);
1717
1718         /*
1719          * Enable beacon generation.
1720          */
1721         rt2500usb_kick_tx_queue(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1722
1723         return 0;
1724 }
1725
1726 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1727         .tx                     = rt2x00mac_tx,
1728         .start                  = rt2x00mac_start,
1729         .stop                   = rt2x00mac_stop,
1730         .add_interface          = rt2x00mac_add_interface,
1731         .remove_interface       = rt2x00mac_remove_interface,
1732         .config                 = rt2x00mac_config,
1733         .config_interface       = rt2x00mac_config_interface,
1734         .configure_filter       = rt2500usb_configure_filter,
1735         .get_stats              = rt2x00mac_get_stats,
1736         .conf_tx                = rt2x00mac_conf_tx,
1737         .get_tx_stats           = rt2x00mac_get_tx_stats,
1738         .beacon_update          = rt2500usb_beacon_update,
1739 };
1740
1741 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1742         .probe_hw               = rt2500usb_probe_hw,
1743         .initialize             = rt2x00usb_initialize,
1744         .uninitialize           = rt2x00usb_uninitialize,
1745         .set_device_state       = rt2500usb_set_device_state,
1746         .link_stats             = rt2500usb_link_stats,
1747         .reset_tuner            = rt2500usb_reset_tuner,
1748         .link_tuner             = rt2500usb_link_tuner,
1749         .write_tx_desc          = rt2500usb_write_tx_desc,
1750         .write_tx_data          = rt2x00usb_write_tx_data,
1751         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1752         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1753         .fill_rxdone            = rt2500usb_fill_rxdone,
1754         .config_mac_addr        = rt2500usb_config_mac_addr,
1755         .config_bssid           = rt2500usb_config_bssid,
1756         .config_type            = rt2500usb_config_type,
1757         .config                 = rt2500usb_config,
1758 };
1759
1760 static const struct rt2x00_ops rt2500usb_ops = {
1761         .name           = DRV_NAME,
1762         .rxd_size       = RXD_DESC_SIZE,
1763         .txd_size       = TXD_DESC_SIZE,
1764         .eeprom_size    = EEPROM_SIZE,
1765         .rf_size        = RF_SIZE,
1766         .lib            = &rt2500usb_rt2x00_ops,
1767         .hw             = &rt2500usb_mac80211_ops,
1768 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1769         .debugfs        = &rt2500usb_rt2x00debug,
1770 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1771 };
1772
1773 /*
1774  * rt2500usb module information.
1775  */
1776 static struct usb_device_id rt2500usb_device_table[] = {
1777         /* ASUS */
1778         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1779         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1780         /* Belkin */
1781         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1782         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1783         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1784         /* Cisco Systems */
1785         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1786         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1787         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1788         /* Conceptronic */
1789         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1790         /* D-LINK */
1791         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1792         /* Gigabyte */
1793         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1794         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1795         /* Hercules */
1796         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1797         /* Melco */
1798         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1799         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1800         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1801         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1802
1803         /* MSI */
1804         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1805         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1806         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1807         /* Ralink */
1808         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1809         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1810         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1811         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1812         /* Siemens */
1813         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1814         /* SMC */
1815         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1816         /* Spairon */
1817         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1818         /* Trust */
1819         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1820         /* Zinwell */
1821         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1822         { 0, }
1823 };
1824
1825 MODULE_AUTHOR(DRV_PROJECT);
1826 MODULE_VERSION(DRV_VERSION);
1827 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1828 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1829 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1830 MODULE_LICENSE("GPL");
1831
1832 static struct usb_driver rt2500usb_driver = {
1833         .name           = DRV_NAME,
1834         .id_table       = rt2500usb_device_table,
1835         .probe          = rt2x00usb_probe,
1836         .disconnect     = rt2x00usb_disconnect,
1837         .suspend        = rt2x00usb_suspend,
1838         .resume         = rt2x00usb_resume,
1839 };
1840
1841 static int __init rt2500usb_init(void)
1842 {
1843         return usb_register(&rt2500usb_driver);
1844 }
1845
1846 static void __exit rt2500usb_exit(void)
1847 {
1848         usb_deregister(&rt2500usb_driver);
1849 }
1850
1851 module_init(rt2500usb_init);
1852 module_exit(rt2500usb_exit);