git.oblomov.eu 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_preamble(struct rt2x00_dev *rt2x00dev,
 306                                       const int short_preamble,
 307                                       const int ack_timeout,
 308                                       const int ack_consume_time)
 309 {
 310         u16 reg;
 311
 312         /*
 313          * When in atomic context, reschedule and let rt2x00lib
 314          * call this function again.
 315          */
 316         if (in_atomic()) {
 317                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->config_work);
 318                 return;
 319         }
 320
 321         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 322         rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, ack_timeout);
 323         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 324
 325         rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
 326         rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
 327                            !!short_preamble);
 328         rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
 329 }
 330
 331 static void rt2500usb_config_phymode(struct rt2x00_dev *rt2x00dev,
 332                                      const int phymode,
 333                                      const int basic_rate_mask)
 334 {
 335         rt2500usb_register_write(rt2x00dev, TXRX_CSR11, basic_rate_mask);
 336
 337         if (phymode == HWMODE_B) {
 338                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x000b);
 339                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x0040);
 340         } else {
 341                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0005);
 342                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x016c);
 343         }
 344 }
 345
 346 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
 347                                      struct rf_channel *rf, const int txpower)
 348 {
 349         /*
 350          * Set TXpower.
 351          */
 352         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 353
 354         /*
 355          * For RT2525E we should first set the channel to half band higher.
 356          */
 357         if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
 358                 static const u32 vals[] = {
 359                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
 360                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
 361                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
 362                         0x00000902, 0x00000906
 363                 };
 364
 365                 rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
 366                 if (rf->rf4)
 367                         rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
 368         }
 369
 370         rt2500usb_rf_write(rt2x00dev, 1, rf->rf1);
 371         rt2500usb_rf_write(rt2x00dev, 2, rf->rf2);
 372         rt2500usb_rf_write(rt2x00dev, 3, rf->rf3);
 373         if (rf->rf4)
 374                 rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
 375 }
 376
 377 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
 378                                      const int txpower)
 379 {
 380         u32 rf3;
 381
 382         rt2x00_rf_read(rt2x00dev, 3, &rf3);
 383         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 384         rt2500usb_rf_write(rt2x00dev, 3, rf3);
 385 }
 386
 387 static void rt2500usb_config_antenna(struct rt2x00_dev *rt2x00dev,
 388                                      const int antenna_tx, const int antenna_rx)
 389 {
 390         u8 r2;
 391         u8 r14;
 392         u16 csr5;
 393         u16 csr6;
 394
 395         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
 396         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
 397         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
 398         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
 399
 400         /*
 401          * Configure the TX antenna.
 402          */
 403         switch (antenna_tx) {
 404         case ANTENNA_SW_DIVERSITY:
 405         case ANTENNA_HW_DIVERSITY:
 406                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
 407                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
 408                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
 409                 break;
 410         case ANTENNA_A:
 411                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
 412                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
 413                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
 414                 break;
 415         case ANTENNA_B:
 416                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
 417                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
 418                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
 419                 break;
 420         }
 421
 422         /*
 423          * Configure the RX antenna.
 424          */
 425         switch (antenna_rx) {
 426         case ANTENNA_SW_DIVERSITY:
 427         case ANTENNA_HW_DIVERSITY:
 428                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
 429                 break;
 430         case ANTENNA_A:
 431                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
 432                 break;
 433         case ANTENNA_B:
 434                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
 435                 break;
 436         }
 437
 438         /*
 439          * RT2525E and RT5222 need to flip TX I/Q
 440          */
 441         if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
 442             rt2x00_rf(&rt2x00dev->chip, RF5222)) {
 443                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
 444                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
 445                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
 446
 447                 /*
 448                  * RT2525E does not need RX I/Q Flip.
 449                  */
 450                 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
 451                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
 452         } else {
 453                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
 454                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
 455         }
 456
 457         rt2500usb_bbp_write(rt2x00dev, 2, r2);
 458         rt2500usb_bbp_write(rt2x00dev, 14, r14);
 459         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
 460         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
 461 }
 462
 463 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
 464                                       struct rt2x00lib_conf *libconf)
 465 {
 466         u16 reg;
 467
 468         rt2500usb_register_write(rt2x00dev, MAC_CSR10, libconf->slot_time);
 469
 470         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 471         rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL,
 472                            libconf->conf->beacon_int * 4);
 473         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 474 }
 475
 476 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
 477                              const unsigned int flags,
 478                              struct rt2x00lib_conf *libconf)
 479 {
 480         if (flags & CONFIG_UPDATE_PHYMODE)
 481                 rt2500usb_config_phymode(rt2x00dev, libconf->phymode,
 482                                          libconf->basic_rates);
 483         if (flags & CONFIG_UPDATE_CHANNEL)
 484                 rt2500usb_config_channel(rt2x00dev, &libconf->rf,
 485                                          libconf->conf->power_level);
 486         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
 487                 rt2500usb_config_txpower(rt2x00dev,
 488                                          libconf->conf->power_level);
 489         if (flags & CONFIG_UPDATE_ANTENNA)
 490                 rt2500usb_config_antenna(rt2x00dev,
 491                                          libconf->conf->antenna_sel_tx,
 492                                          libconf->conf->antenna_sel_rx);
 493         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
 494                 rt2500usb_config_duration(rt2x00dev, libconf);
 495 }
 496
 497 /*
 498  * LED functions.
 499  */
 500 static void rt2500usb_enable_led(struct rt2x00_dev *rt2x00dev)
 501 {
 502         u16 reg;
 503
 504         rt2500usb_register_read(rt2x00dev, MAC_CSR21, &reg);
 505         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, 70);
 506         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, 30);
 507         rt2500usb_register_write(rt2x00dev, MAC_CSR21, reg);
 508
 509         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 510
 511         if (rt2x00dev->led_mode == LED_MODE_TXRX_ACTIVITY) {
 512                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 1);
 513                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 514         } else if (rt2x00dev->led_mode == LED_MODE_ASUS) {
 515                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 516                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 1);
 517         } else {
 518                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 1);
 519                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 1);
 520         }
 521
 522         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 523 }
 524
 525 static void rt2500usb_disable_led(struct rt2x00_dev *rt2x00dev)
 526 {
 527         u16 reg;
 528
 529         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 530         rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 531         rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 532         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 533 }
 534
 535 /*
 536  * Link tuning
 537  */
 538 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev)
 539 {
 540         u16 reg;
 541
 542         /*
 543          * Update FCS error count from register.
 544          */
 545         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
 546         rt2x00dev->link.rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
 547
 548         /*
 549          * Update False CCA count from register.
 550          */
 551         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
 552         rt2x00dev->link.false_cca =
 553             rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
 554 }
 555
 556 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
 557 {
 558         u16 eeprom;
 559         u16 value;
 560
 561         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
 562         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
 563         rt2500usb_bbp_write(rt2x00dev, 24, value);
 564
 565         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
 566         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
 567         rt2500usb_bbp_write(rt2x00dev, 25, value);
 568
 569         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
 570         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
 571         rt2500usb_bbp_write(rt2x00dev, 61, value);
 572
 573         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
 574         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
 575         rt2500usb_bbp_write(rt2x00dev, 17, value);
 576
 577         rt2x00dev->link.vgc_level = value;
 578 }
 579
 580 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
 581 {
 582         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
 583         u16 bbp_thresh;
 584         u16 vgc_bound;
 585         u16 sens;
 586         u16 r24;
 587         u16 r25;
 588         u16 r61;
 589         u16 r17_sens;
 590         u8 r17;
 591         u8 up_bound;
 592         u8 low_bound;
 593
 594         /*
 595          * Determine the BBP tuning threshold and correctly
 596          * set BBP 24, 25 and 61.
 597          */
 598         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
 599         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
 600
 601         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
 602         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
 603         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
 604
 605         if ((rssi + bbp_thresh) > 0) {
 606                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
 607                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
 608                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
 609         } else {
 610                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
 611                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
 612                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
 613         }
 614
 615         rt2500usb_bbp_write(rt2x00dev, 24, r24);
 616         rt2500usb_bbp_write(rt2x00dev, 25, r25);
 617         rt2500usb_bbp_write(rt2x00dev, 61, r61);
 618
 619         /*
 620          * Read current r17 value, as well as the sensitivity values
 621          * for the r17 register.
 622          */
 623         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
 624         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
 625
 626         /*
 627          * A too low RSSI will cause too much false CCA which will
 628          * then corrupt the R17 tuning. To remidy this the tuning should
 629          * be stopped (While making sure the R17 value will not exceed limits)
 630          */
 631         if (rssi >= -40) {
 632                 if (r17 != 0x60)
 633                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
 634                 return;
 635         }
 636
 637         /*
 638          * Special big-R17 for short distance
 639          */
 640         if (rssi >= -58) {
 641                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
 642                 if (r17 != sens)
 643                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 644                 return;
 645         }
 646
 647         /*
 648          * Special mid-R17 for middle distance
 649          */
 650         if (rssi >= -74) {
 651                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
 652                 if (r17 != sens)
 653                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 654                 return;
 655         }
 656
 657         /*
 658          * Leave short or middle distance condition, restore r17
 659          * to the dynamic tuning range.
 660          */
 661         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
 662         vgc_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
 663
 664         low_bound = 0x32;
 665         if (rssi >= -77)
 666                 up_bound = vgc_bound;
 667         else
 668                 up_bound = vgc_bound - (-77 - rssi);
 669
 670         if (up_bound < low_bound)
 671                 up_bound = low_bound;
 672
 673         if (r17 > up_bound) {
 674                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
 675                 rt2x00dev->link.vgc_level = up_bound;
 676         } else if (rt2x00dev->link.false_cca > 512 && r17 < up_bound) {
 677                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
 678                 rt2x00dev->link.vgc_level = r17;
 679         } else if (rt2x00dev->link.false_cca < 100 && r17 > low_bound) {
 680                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
 681                 rt2x00dev->link.vgc_level = r17;
 682         }
 683 }
 684
 685 /*
 686  * Initialization functions.
 687  */
 688 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
 689 {
 690         u16 reg;
 691
 692         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
 693                                     USB_MODE_TEST, REGISTER_TIMEOUT);
 694         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
 695                                     0x00f0, REGISTER_TIMEOUT);
 696
 697         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 698         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 699         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 700
 701         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
 702         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
 703
 704         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 705         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
 706         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
 707         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 708         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 709
 710         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 711         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 712         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 713         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 714         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 715
 716         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
 717         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
 718         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
 719         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
 720         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
 721         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
 722
 723         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
 724         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
 725         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
 726         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
 727         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
 728         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
 729
 730         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 731         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
 732         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
 733         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
 734         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
 735         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 736
 737         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 738         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
 739         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
 740         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
 741         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
 742         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 743
 744         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
 745         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
 746
 747         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 748                 return -EBUSY;
 749
 750         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 751         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 752         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 753         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
 754         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 755
 756         if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
 757                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
 758                 reg &= ~0x0002;
 759         } else {
 760                 reg = 0x3002;
 761         }
 762         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
 763
 764         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
 765         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
 766         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
 767         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
 768
 769         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 770         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
 771                            rt2x00dev->rx->data_size);
 772         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
 773
 774         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 775         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 776         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
 777         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 778
 779         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 780         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
 781         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 782
 783         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
 784         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
 785         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
 786
 787         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 788         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
 789         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 790
 791         return 0;
 792 }
 793
 794 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
 795 {
 796         unsigned int i;
 797         u16 eeprom;
 798         u8 value;
 799         u8 reg_id;
 800
 801         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 802                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
 803                 if ((value != 0xff) && (value != 0x00))
 804                         goto continue_csr_init;
 805                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
 806                 udelay(REGISTER_BUSY_DELAY);
 807         }
 808
 809         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
 810         return -EACCES;
 811
 812 continue_csr_init:
 813         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
 814         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
 815         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
 816         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
 817         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
 818         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
 819         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
 820         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
 821         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
 822         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
 823         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
 824         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
 825         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
 826         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
 827         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
 828         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
 829         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
 830         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
 831         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
 832         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
 833         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
 834         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
 835         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
 836         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
 837         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
 838         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
 839         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
 840         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
 841         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
 842         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
 843         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
 844
 845         DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
 846         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 847                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 848
 849                 if (eeprom != 0xffff && eeprom != 0x0000) {
 850                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 851                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 852                         DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
 853                               reg_id, value);
 854                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
 855                 }
 856         }
 857         DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
 858
 859         return 0;
 860 }
 861
 862 /*
 863  * Device state switch handlers.
 864  */
 865 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
 866                                 enum dev_state state)
 867 {
 868         u16 reg;
 869
 870         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 871         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
 872                            state == STATE_RADIO_RX_OFF);
 873         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 874 }
 875
 876 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
 877 {
 878         /*
 879          * Initialize all registers.
 880          */
 881         if (rt2500usb_init_registers(rt2x00dev) ||
 882             rt2500usb_init_bbp(rt2x00dev)) {
 883                 ERROR(rt2x00dev, "Register initialization failed.\n");
 884                 return -EIO;
 885         }
 886
 887         rt2x00usb_enable_radio(rt2x00dev);
 888
 889         /*
 890          * Enable LED
 891          */
 892         rt2500usb_enable_led(rt2x00dev);
 893
 894         return 0;
 895 }
 896
 897 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
 898 {
 899         /*
 900          * Disable LED
 901          */
 902         rt2500usb_disable_led(rt2x00dev);
 903
 904         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
 905         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
 906
 907         /*
 908          * Disable synchronisation.
 909          */
 910         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 911
 912         rt2x00usb_disable_radio(rt2x00dev);
 913 }
 914
 915 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
 916                                enum dev_state state)
 917 {
 918         u16 reg;
 919         u16 reg2;
 920         unsigned int i;
 921         char put_to_sleep;
 922         char bbp_state;
 923         char rf_state;
 924
 925         put_to_sleep = (state != STATE_AWAKE);
 926
 927         reg = 0;
 928         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
 929         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
 930         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
 931         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 932         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
 933         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 934
 935         /*
 936          * Device is not guaranteed to be in the requested state yet.
 937          * We must wait until the register indicates that the
 938          * device has entered the correct state.
 939          */
 940         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 941                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
 942                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
 943                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
 944                 if (bbp_state == state && rf_state == state)
 945                         return 0;
 946                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 947                 msleep(30);
 948         }
 949
 950         NOTICE(rt2x00dev, "Device failed to enter state %d, "
 951                "current device state: bbp %d and rf %d.\n",
 952                state, bbp_state, rf_state);
 953
 954         return -EBUSY;
 955 }
 956
 957 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
 958                                       enum dev_state state)
 959 {
 960         int retval = 0;
 961
 962         switch (state) {
 963         case STATE_RADIO_ON:
 964                 retval = rt2500usb_enable_radio(rt2x00dev);
 965                 break;
 966         case STATE_RADIO_OFF:
 967                 rt2500usb_disable_radio(rt2x00dev);
 968                 break;
 969         case STATE_RADIO_RX_ON:
 970         case STATE_RADIO_RX_OFF:
 971                 rt2500usb_toggle_rx(rt2x00dev, state);
 972                 break;
 973         case STATE_DEEP_SLEEP:
 974         case STATE_SLEEP:
 975         case STATE_STANDBY:
 976         case STATE_AWAKE:
 977                 retval = rt2500usb_set_state(rt2x00dev, state);
 978                 break;
 979         default:
 980                 retval = -ENOTSUPP;
 981                 break;
 982         }
 983
 984         return retval;
 985 }
 986
 987 /*
 988  * TX descriptor initialization
 989  */
 990 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 991                                     struct data_desc *txd,
 992                                     struct txdata_entry_desc *desc,
 993                                     struct ieee80211_hdr *ieee80211hdr,
 994                                     unsigned int length,
 995                                     struct ieee80211_tx_control *control)
 996 {
 997         u32 word;
 998
 999         /*
1000          * Start writing the descriptor words.
1001          */
1002         rt2x00_desc_read(txd, 1, &word);
1003         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1004         rt2x00_set_field32(&word, TXD_W1_AIFS, desc->aifs);
1005         rt2x00_set_field32(&word, TXD_W1_CWMIN, desc->cw_min);
1006         rt2x00_set_field32(&word, TXD_W1_CWMAX, desc->cw_max);
1007         rt2x00_desc_write(txd, 1, word);
1008
1009         rt2x00_desc_read(txd, 2, &word);
1010         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, desc->signal);
1011         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, desc->service);
1012         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, desc->length_low);
1013         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, desc->length_high);
1014         rt2x00_desc_write(txd, 2, word);
1015
1016         rt2x00_desc_read(txd, 0, &word);
1017         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, control->retry_limit);
1018         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1019                            test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
1020         rt2x00_set_field32(&word, TXD_W0_ACK,
1021                            !(control->flags & IEEE80211_TXCTL_NO_ACK));
1022         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1023                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
1024         rt2x00_set_field32(&word, TXD_W0_OFDM,
1025                            test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
1026         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1027                            !!(control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT));
1028         rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
1029         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, length);
1030         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1031         rt2x00_desc_write(txd, 0, word);
1032 }
1033
1034 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1035                                      struct sk_buff *skb)
1036 {
1037         int length;
1038
1039         /*
1040          * The length _must_ be a multiple of 2,
1041          * but it must _not_ be a multiple of the USB packet size.
1042          */
1043         length = roundup(skb->len, 2);
1044         length += (2 * !(length % rt2x00dev->usb_maxpacket));
1045
1046         return length;
1047 }
1048
1049 /*
1050  * TX data initialization
1051  */
1052 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1053                                     unsigned int queue)
1054 {
1055         u16 reg;
1056
1057         if (queue != IEEE80211_TX_QUEUE_BEACON)
1058                 return;
1059
1060         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1061         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1062                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1063                 /*
1064                  * Beacon generation will fail initially.
1065                  * To prevent this we need to register the TXRX_CSR19
1066                  * register several times.
1067                  */
1068                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1069                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1070                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1071                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1072                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1073         }
1074 }
1075
1076 /*
1077  * RX control handlers
1078  */
1079 static void rt2500usb_fill_rxdone(struct data_entry *entry,
1080                                   struct rxdata_entry_desc *desc)
1081 {
1082         struct urb *urb = entry->priv;
1083         struct data_desc *rxd = (struct data_desc *)(entry->skb->data +
1084                                                      (urb->actual_length -
1085                                                       entry->ring->desc_size));
1086         u32 word0;
1087         u32 word1;
1088
1089         rt2x00_desc_read(rxd, 0, &word0);
1090         rt2x00_desc_read(rxd, 1, &word1);
1091
1092         desc->flags = 0;
1093         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1094                 desc->flags |= RX_FLAG_FAILED_FCS_CRC;
1095         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1096                 desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1097
1098         /*
1099          * Obtain the status about this packet.
1100          */
1101         desc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1102         desc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1103             entry->ring->rt2x00dev->rssi_offset;
1104         desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1105         desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1106
1107         return;
1108 }
1109
1110 /*
1111  * Interrupt functions.
1112  */
1113 static void rt2500usb_beacondone(struct urb *urb)
1114 {
1115         struct data_entry *entry = (struct data_entry *)urb->context;
1116         struct data_ring *ring = entry->ring;
1117
1118         if (!test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags))
1119                 return;
1120
1121         /*
1122          * Check if this was the guardian beacon,
1123          * if that was the case we need to send the real beacon now.
1124          * Otherwise we should free the sk_buffer, the device
1125          * should be doing the rest of the work now.
1126          */
1127         if (ring->index == 1) {
1128                 rt2x00_ring_index_done_inc(ring);
1129                 entry = rt2x00_get_data_entry(ring);
1130                 usb_submit_urb(entry->priv, GFP_ATOMIC);
1131                 rt2x00_ring_index_inc(ring);
1132         } else if (ring->index_done == 1) {
1133                 entry = rt2x00_get_data_entry_done(ring);
1134                 if (entry->skb) {
1135                         dev_kfree_skb(entry->skb);
1136                         entry->skb = NULL;
1137                 }
1138                 rt2x00_ring_index_done_inc(ring);
1139         }
1140 }
1141
1142 /*
1143  * Device probe functions.
1144  */
1145 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1146 {
1147         u16 word;
1148         u8 *mac;
1149
1150         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1151
1152         /*
1153          * Start validation of the data that has been read.
1154          */
1155         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1156         if (!is_valid_ether_addr(mac)) {
1157                 DECLARE_MAC_BUF(macbuf);
1158
1159                 random_ether_addr(mac);
1160                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1161         }
1162
1163         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1164         if (word == 0xffff) {
1165                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1166                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT, 0);
1167                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT, 0);
1168                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE, 0);
1169                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1170                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1171                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1172                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1173                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1174         }
1175
1176         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1177         if (word == 0xffff) {
1178                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1179                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1180                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1181                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1182                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1183         }
1184
1185         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1186         if (word == 0xffff) {
1187                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1188                                    DEFAULT_RSSI_OFFSET);
1189                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1190                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1191         }
1192
1193         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1194         if (word == 0xffff) {
1195                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1196                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1197                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1198         }
1199
1200         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1201         if (word == 0xffff) {
1202                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1203                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1204                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1205         }
1206
1207         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1208         if (word == 0xffff) {
1209                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1210                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1211                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1212                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1213         }
1214
1215         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1216         if (word == 0xffff) {
1217                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1218                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1219                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1220                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1221         }
1222
1223         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1224         if (word == 0xffff) {
1225                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1226                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1227                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1228                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1229         }
1230
1231         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1232         if (word == 0xffff) {
1233                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1234                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1235                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1236                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1237         }
1238
1239         return 0;
1240 }
1241
1242 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1243 {
1244         u16 reg;
1245         u16 value;
1246         u16 eeprom;
1247
1248         /*
1249          * Read EEPROM word for configuration.
1250          */
1251         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1252
1253         /*
1254          * Identify RF chipset.
1255          */
1256         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1257         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1258         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1259
1260         if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
1261                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1262                 return -ENODEV;
1263         }
1264
1265         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1266             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1267             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1268             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1269             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1270             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1271                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1272                 return -ENODEV;
1273         }
1274
1275         /*
1276          * Identify default antenna configuration.
1277          */
1278         rt2x00dev->hw->conf.antenna_sel_tx =
1279             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1280         rt2x00dev->hw->conf.antenna_sel_rx =
1281             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1282
1283         /*
1284          * Store led mode, for correct led behaviour.
1285          */
1286         rt2x00dev->led_mode =
1287             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1288
1289         /*
1290          * Check if the BBP tuning should be disabled.
1291          */
1292         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1293         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1294                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1295
1296         /*
1297          * Read the RSSI <-> dBm offset information.
1298          */
1299         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1300         rt2x00dev->rssi_offset =
1301             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1302
1303         return 0;
1304 }
1305
1306 /*
1307  * RF value list for RF2522
1308  * Supports: 2.4 GHz
1309  */
1310 static const struct rf_channel rf_vals_bg_2522[] = {
1311         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1312         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1313         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1314         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1315         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1316         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1317         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1318         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1319         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1320         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1321         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1322         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1323         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1324         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1325 };
1326
1327 /*
1328  * RF value list for RF2523
1329  * Supports: 2.4 GHz
1330  */
1331 static const struct rf_channel rf_vals_bg_2523[] = {
1332         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1333         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1334         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1335         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1336         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1337         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1338         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1339         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1340         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1341         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1342         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1343         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1344         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1345         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1346 };
1347
1348 /*
1349  * RF value list for RF2524
1350  * Supports: 2.4 GHz
1351  */
1352 static const struct rf_channel rf_vals_bg_2524[] = {
1353         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1354         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1355         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1356         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1357         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1358         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1359         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1360         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1361         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1362         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1363         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1364         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1365         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1366         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1367 };
1368
1369 /*
1370  * RF value list for RF2525
1371  * Supports: 2.4 GHz
1372  */
1373 static const struct rf_channel rf_vals_bg_2525[] = {
1374         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1375         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1376         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1377         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1378         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1379         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1380         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1381         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1382         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1383         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1384         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1385         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1386         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1387         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1388 };
1389
1390 /*
1391  * RF value list for RF2525e
1392  * Supports: 2.4 GHz
1393  */
1394 static const struct rf_channel rf_vals_bg_2525e[] = {
1395         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1396         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1397         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1398         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1399         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1400         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1401         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1402         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1403         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1404         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1405         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1406         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1407         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1408         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1409 };
1410
1411 /*
1412  * RF value list for RF5222
1413  * Supports: 2.4 GHz & 5.2 GHz
1414  */
1415 static const struct rf_channel rf_vals_5222[] = {
1416         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1417         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1418         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1419         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1420         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1421         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1422         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1423         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1424         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1425         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1426         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1427         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1428         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1429         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1430
1431         /* 802.11 UNI / HyperLan 2 */
1432         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1433         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1434         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1435         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1436         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1437         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1438         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1439         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1440
1441         /* 802.11 HyperLan 2 */
1442         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1443         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1444         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1445         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1446         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1447         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1448         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1449         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1450         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1451         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1452
1453         /* 802.11 UNII */
1454         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1455         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1456         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1457         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1458         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1459 };
1460
1461 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1462 {
1463         struct hw_mode_spec *spec = &rt2x00dev->spec;
1464         u8 *txpower;
1465         unsigned int i;
1466
1467         /*
1468          * Initialize all hw fields.
1469          */
1470         rt2x00dev->hw->flags =
1471             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1472             IEEE80211_HW_RX_INCLUDES_FCS |
1473             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1474         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1475         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1476         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1477         rt2x00dev->hw->queues = 2;
1478
1479         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1480         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1481                                 rt2x00_eeprom_addr(rt2x00dev,
1482                                                    EEPROM_MAC_ADDR_0));
1483
1484         /*
1485          * Convert tx_power array in eeprom.
1486          */
1487         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1488         for (i = 0; i < 14; i++)
1489                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1490
1491         /*
1492          * Initialize hw_mode information.
1493          */
1494         spec->num_modes = 2;
1495         spec->num_rates = 12;
1496         spec->tx_power_a = NULL;
1497         spec->tx_power_bg = txpower;
1498         spec->tx_power_default = DEFAULT_TXPOWER;
1499
1500         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1501                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1502                 spec->channels = rf_vals_bg_2522;
1503         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1504                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1505                 spec->channels = rf_vals_bg_2523;
1506         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1507                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1508                 spec->channels = rf_vals_bg_2524;
1509         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1510                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1511                 spec->channels = rf_vals_bg_2525;
1512         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1513                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1514                 spec->channels = rf_vals_bg_2525e;
1515         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1516                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1517                 spec->channels = rf_vals_5222;
1518                 spec->num_modes = 3;
1519         }
1520 }
1521
1522 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1523 {
1524         int retval;
1525
1526         /*
1527          * Allocate eeprom data.
1528          */
1529         retval = rt2500usb_validate_eeprom(rt2x00dev);
1530         if (retval)
1531                 return retval;
1532
1533         retval = rt2500usb_init_eeprom(rt2x00dev);
1534         if (retval)
1535                 return retval;
1536
1537         /*
1538          * Initialize hw specifications.
1539          */
1540         rt2500usb_probe_hw_mode(rt2x00dev);
1541
1542         /*
1543          * This device requires the beacon ring
1544          */
1545         __set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
1546
1547         /*
1548          * Set the rssi offset.
1549          */
1550         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1551
1552         return 0;
1553 }
1554
1555 /*
1556  * IEEE80211 stack callback functions.
1557  */
1558 static void rt2500usb_configure_filter(struct ieee80211_hw *hw,
1559                                        unsigned int changed_flags,
1560                                        unsigned int *total_flags,
1561                                        int mc_count,
1562                                        struct dev_addr_list *mc_list)
1563 {
1564         struct rt2x00_dev *rt2x00dev = hw->priv;
1565         struct interface *intf = &rt2x00dev->interface;
1566         u16 reg;
1567
1568         /*
1569          * Mask off any flags we are going to ignore from
1570          * the total_flags field.
1571          */
1572         *total_flags &=
1573             FIF_ALLMULTI |
1574             FIF_FCSFAIL |
1575             FIF_PLCPFAIL |
1576             FIF_CONTROL |
1577             FIF_OTHER_BSS |
1578             FIF_PROMISC_IN_BSS;
1579
1580         /*
1581          * Apply some rules to the filters:
1582          * - Some filters imply different filters to be set.
1583          * - Some things we can't filter out at all.
1584          * - Some filters are set based on interface type.
1585          */
1586         if (mc_count)
1587                 *total_flags |= FIF_ALLMULTI;
1588         if (*total_flags & FIF_OTHER_BSS ||
1589             *total_flags & FIF_PROMISC_IN_BSS)
1590                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1591         if (is_interface_type(intf, IEEE80211_IF_TYPE_AP))
1592                 *total_flags |= FIF_PROMISC_IN_BSS;
1593
1594         /*
1595          * Check if there is any work left for us.
1596          */
1597         if (intf->filter == *total_flags)
1598                 return;
1599         intf->filter = *total_flags;
1600
1601         /*
1602          * When in atomic context, reschedule and let rt2x00lib
1603          * call this function again.
1604          */
1605         if (in_atomic()) {
1606                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1607                 return;
1608         }
1609
1610         /*
1611          * Start configuration steps.
1612          * Note that the version error will always be dropped
1613          * and broadcast frames will always be accepted since
1614          * there is no filter for it at this time.
1615          */
1616         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
1617         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
1618                            !(*total_flags & FIF_FCSFAIL));
1619         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
1620                            !(*total_flags & FIF_PLCPFAIL));
1621         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
1622                            !(*total_flags & FIF_CONTROL));
1623         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
1624                            !(*total_flags & FIF_PROMISC_IN_BSS));
1625         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
1626                            !(*total_flags & FIF_PROMISC_IN_BSS));
1627         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
1628         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
1629                            !(*total_flags & FIF_ALLMULTI));
1630         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
1631         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
1632 }
1633
1634 static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
1635                                    struct sk_buff *skb,
1636                                    struct ieee80211_tx_control *control)
1637 {
1638         struct rt2x00_dev *rt2x00dev = hw->priv;
1639         struct usb_device *usb_dev =
1640             interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
1641         struct data_ring *ring =
1642             rt2x00lib_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1643         struct data_entry *beacon;
1644         struct data_entry *guardian;
1645         int pipe = usb_sndbulkpipe(usb_dev, 1);
1646         int length;
1647
1648         /*
1649          * Just in case the ieee80211 doesn't set this,
1650          * but we need this queue set for the descriptor
1651          * initialization.
1652          */
1653         control->queue = IEEE80211_TX_QUEUE_BEACON;
1654
1655         /*
1656          * Obtain 2 entries, one for the guardian byte,
1657          * the second for the actual beacon.
1658          */
1659         guardian = rt2x00_get_data_entry(ring);
1660         rt2x00_ring_index_inc(ring);
1661         beacon = rt2x00_get_data_entry(ring);
1662
1663         /*
1664          * First we create the beacon.
1665          */
1666         skb_push(skb, ring->desc_size);
1667         memset(skb->data, 0, ring->desc_size);
1668
1669         rt2x00lib_write_tx_desc(rt2x00dev, (struct data_desc *)skb->data,
1670                                 (struct ieee80211_hdr *)(skb->data +
1671                                                          ring->desc_size),
1672                                 skb->len - ring->desc_size, control);
1673
1674         length = rt2500usb_get_tx_data_len(rt2x00dev, skb);
1675
1676         usb_fill_bulk_urb(beacon->priv, usb_dev, pipe,
1677                           skb->data, length, rt2500usb_beacondone, beacon);
1678
1679         beacon->skb = skb;
1680
1681         /*
1682          * Second we need to create the guardian byte.
1683          * We only need a single byte, so lets recycle
1684          * the 'flags' field we are not using for beacons.
1685          */
1686         guardian->flags = 0;
1687         usb_fill_bulk_urb(guardian->priv, usb_dev, pipe,
1688                           &guardian->flags, 1, rt2500usb_beacondone, guardian);
1689
1690         /*
1691          * Send out the guardian byte.
1692          */
1693         usb_submit_urb(guardian->priv, GFP_ATOMIC);
1694
1695         /*
1696          * Enable beacon generation.
1697          */
1698         rt2500usb_kick_tx_queue(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1699
1700         return 0;
1701 }
1702
1703 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1704         .tx                     = rt2x00mac_tx,
1705         .start                  = rt2x00mac_start,
1706         .stop                   = rt2x00mac_stop,
1707         .add_interface          = rt2x00mac_add_interface,
1708         .remove_interface       = rt2x00mac_remove_interface,
1709         .config                 = rt2x00mac_config,
1710         .config_interface       = rt2x00mac_config_interface,
1711         .configure_filter       = rt2500usb_configure_filter,
1712         .get_stats              = rt2x00mac_get_stats,
1713         .erp_ie_changed         = rt2x00mac_erp_ie_changed,
1714         .conf_tx                = rt2x00mac_conf_tx,
1715         .get_tx_stats           = rt2x00mac_get_tx_stats,
1716         .beacon_update          = rt2500usb_beacon_update,
1717 };
1718
1719 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1720         .probe_hw               = rt2500usb_probe_hw,
1721         .initialize             = rt2x00usb_initialize,
1722         .uninitialize           = rt2x00usb_uninitialize,
1723         .set_device_state       = rt2500usb_set_device_state,
1724         .link_stats             = rt2500usb_link_stats,
1725         .reset_tuner            = rt2500usb_reset_tuner,
1726         .link_tuner             = rt2500usb_link_tuner,
1727         .write_tx_desc          = rt2500usb_write_tx_desc,
1728         .write_tx_data          = rt2x00usb_write_tx_data,
1729         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1730         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1731         .fill_rxdone            = rt2500usb_fill_rxdone,
1732         .config_mac_addr        = rt2500usb_config_mac_addr,
1733         .config_bssid           = rt2500usb_config_bssid,
1734         .config_type            = rt2500usb_config_type,
1735         .config_preamble        = rt2500usb_config_preamble,
1736         .config                 = rt2500usb_config,
1737 };
1738
1739 static const struct rt2x00_ops rt2500usb_ops = {
1740         .name           = DRV_NAME,
1741         .rxd_size       = RXD_DESC_SIZE,
1742         .txd_size       = TXD_DESC_SIZE,
1743         .eeprom_size    = EEPROM_SIZE,
1744         .rf_size        = RF_SIZE,
1745         .lib            = &rt2500usb_rt2x00_ops,
1746         .hw             = &rt2500usb_mac80211_ops,
1747 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1748         .debugfs        = &rt2500usb_rt2x00debug,
1749 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1750 };
1751
1752 /*
1753  * rt2500usb module information.
1754  */
1755 static struct usb_device_id rt2500usb_device_table[] = {
1756         /* ASUS */
1757         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1758         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1759         /* Belkin */
1760         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1761         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1762         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1763         /* Cisco Systems */
1764         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1765         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1766         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1767         /* Conceptronic */
1768         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1769         /* D-LINK */
1770         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1771         /* Gigabyte */
1772         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1773         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1774         /* Hercules */
1775         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1776         /* Melco */
1777         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1778         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1779         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1780         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1781
1782         /* MSI */
1783         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1784         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1785         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1786         /* Ralink */
1787         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1788         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1789         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1790         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1791         /* Siemens */
1792         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1793         /* SMC */
1794         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1795         /* Spairon */
1796         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1797         /* Trust */
1798         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1799         /* Zinwell */
1800         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1801         { 0, }
1802 };
1803
1804 MODULE_AUTHOR(DRV_PROJECT);
1805 MODULE_VERSION(DRV_VERSION);
1806 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1807 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1808 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1809 MODULE_LICENSE("GPL");
1810
1811 static struct usb_driver rt2500usb_driver = {
1812         .name           = DRV_NAME,
1813         .id_table       = rt2500usb_device_table,
1814         .probe          = rt2x00usb_probe,
1815         .disconnect     = rt2x00usb_disconnect,
1816         .suspend        = rt2x00usb_suspend,
1817         .resume         = rt2x00usb_resume,
1818 };
1819
1820 static int __init rt2500usb_init(void)
1821 {
1822         return usb_register(&rt2500usb_driver);
1823 }
1824
1825 static void __exit rt2500usb_exit(void)
1826 {
1827         usb_deregister(&rt2500usb_driver);
1828 }
1829
1830 module_init(rt2500usb_init);
1831 module_exit(rt2500usb_exit);