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                                      struct antenna_setup *ant)
 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 (ant->tx) {
 404         case ANTENNA_HW_DIVERSITY:
 405                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
 406                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
 407                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
 408                 break;
 409         case ANTENNA_A:
 410                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
 411                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
 412                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
 413                 break;
 414         case ANTENNA_SW_DIVERSITY:
 415                 /*
 416                  * NOTE: We should never come here because rt2x00lib is
 417                  * supposed to catch this and send us the correct antenna
 418                  * explicitely. However we are nog going to bug about this.
 419                  * Instead, just default to antenna B.
 420                  */
 421         case ANTENNA_B:
 422                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
 423                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
 424                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
 425                 break;
 426         }
 427
 428         /*
 429          * Configure the RX antenna.
 430          */
 431         switch (ant->rx) {
 432         case ANTENNA_HW_DIVERSITY:
 433                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
 434                 break;
 435         case ANTENNA_A:
 436                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
 437                 break;
 438         case ANTENNA_SW_DIVERSITY:
 439                 /*
 440                  * NOTE: We should never come here because rt2x00lib is
 441                  * supposed to catch this and send us the correct antenna
 442                  * explicitely. However we are nog going to bug about this.
 443                  * Instead, just default to antenna B.
 444                  */
 445         case ANTENNA_B:
 446                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
 447                 break;
 448         }
 449
 450         /*
 451          * RT2525E and RT5222 need to flip TX I/Q
 452          */
 453         if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
 454             rt2x00_rf(&rt2x00dev->chip, RF5222)) {
 455                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
 456                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
 457                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
 458
 459                 /*
 460                  * RT2525E does not need RX I/Q Flip.
 461                  */
 462                 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
 463                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
 464         } else {
 465                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
 466                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
 467         }
 468
 469         rt2500usb_bbp_write(rt2x00dev, 2, r2);
 470         rt2500usb_bbp_write(rt2x00dev, 14, r14);
 471         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
 472         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
 473 }
 474
 475 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
 476                                       struct rt2x00lib_conf *libconf)
 477 {
 478         u16 reg;
 479
 480         rt2500usb_register_write(rt2x00dev, MAC_CSR10, libconf->slot_time);
 481
 482         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 483         rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL,
 484                            libconf->conf->beacon_int * 4);
 485         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 486 }
 487
 488 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
 489                              const unsigned int flags,
 490                              struct rt2x00lib_conf *libconf)
 491 {
 492         if (flags & CONFIG_UPDATE_PHYMODE)
 493                 rt2500usb_config_phymode(rt2x00dev, libconf->phymode,
 494                                          libconf->basic_rates);
 495         if (flags & CONFIG_UPDATE_CHANNEL)
 496                 rt2500usb_config_channel(rt2x00dev, &libconf->rf,
 497                                          libconf->conf->power_level);
 498         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
 499                 rt2500usb_config_txpower(rt2x00dev,
 500                                          libconf->conf->power_level);
 501         if (flags & CONFIG_UPDATE_ANTENNA)
 502                 rt2500usb_config_antenna(rt2x00dev, &libconf->ant);
 503         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
 504                 rt2500usb_config_duration(rt2x00dev, libconf);
 505 }
 506
 507 /*
 508  * LED functions.
 509  */
 510 static void rt2500usb_enable_led(struct rt2x00_dev *rt2x00dev)
 511 {
 512         u16 reg;
 513
 514         rt2500usb_register_read(rt2x00dev, MAC_CSR21, &reg);
 515         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, 70);
 516         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, 30);
 517         rt2500usb_register_write(rt2x00dev, MAC_CSR21, reg);
 518
 519         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 520         rt2x00_set_field16(&reg, MAC_CSR20_LINK,
 521                            (rt2x00dev->led_mode != LED_MODE_ASUS));
 522         rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY,
 523                            (rt2x00dev->led_mode != LED_MODE_TXRX_ACTIVITY));
 524         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 525 }
 526
 527 static void rt2500usb_disable_led(struct rt2x00_dev *rt2x00dev)
 528 {
 529         u16 reg;
 530
 531         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 532         rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 533         rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 534         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 535 }
 536
 537 /*
 538  * Link tuning
 539  */
 540 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
 541                                  struct link_qual *qual)
 542 {
 543         u16 reg;
 544
 545         /*
 546          * Update FCS error count from register.
 547          */
 548         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
 549         qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
 550
 551         /*
 552          * Update False CCA count from register.
 553          */
 554         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
 555         qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
 556 }
 557
 558 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
 559 {
 560         u16 eeprom;
 561         u16 value;
 562
 563         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
 564         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
 565         rt2500usb_bbp_write(rt2x00dev, 24, value);
 566
 567         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
 568         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
 569         rt2500usb_bbp_write(rt2x00dev, 25, value);
 570
 571         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
 572         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
 573         rt2500usb_bbp_write(rt2x00dev, 61, value);
 574
 575         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
 576         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
 577         rt2500usb_bbp_write(rt2x00dev, 17, value);
 578
 579         rt2x00dev->link.vgc_level = value;
 580 }
 581
 582 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
 583 {
 584         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
 585         u16 bbp_thresh;
 586         u16 vgc_bound;
 587         u16 sens;
 588         u16 r24;
 589         u16 r25;
 590         u16 r61;
 591         u16 r17_sens;
 592         u8 r17;
 593         u8 up_bound;
 594         u8 low_bound;
 595
 596         /*
 597          * Determine the BBP tuning threshold and correctly
 598          * set BBP 24, 25 and 61.
 599          */
 600         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
 601         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
 602
 603         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
 604         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
 605         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
 606
 607         if ((rssi + bbp_thresh) > 0) {
 608                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
 609                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
 610                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
 611         } else {
 612                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
 613                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
 614                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
 615         }
 616
 617         rt2500usb_bbp_write(rt2x00dev, 24, r24);
 618         rt2500usb_bbp_write(rt2x00dev, 25, r25);
 619         rt2500usb_bbp_write(rt2x00dev, 61, r61);
 620
 621         /*
 622          * Read current r17 value, as well as the sensitivity values
 623          * for the r17 register.
 624          */
 625         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
 626         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
 627
 628         /*
 629          * A too low RSSI will cause too much false CCA which will
 630          * then corrupt the R17 tuning. To remidy this the tuning should
 631          * be stopped (While making sure the R17 value will not exceed limits)
 632          */
 633         if (rssi >= -40) {
 634                 if (r17 != 0x60)
 635                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
 636                 return;
 637         }
 638
 639         /*
 640          * Special big-R17 for short distance
 641          */
 642         if (rssi >= -58) {
 643                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
 644                 if (r17 != sens)
 645                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 646                 return;
 647         }
 648
 649         /*
 650          * Special mid-R17 for middle distance
 651          */
 652         if (rssi >= -74) {
 653                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
 654                 if (r17 != sens)
 655                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 656                 return;
 657         }
 658
 659         /*
 660          * Leave short or middle distance condition, restore r17
 661          * to the dynamic tuning range.
 662          */
 663         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
 664         vgc_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
 665
 666         low_bound = 0x32;
 667         if (rssi >= -77)
 668                 up_bound = vgc_bound;
 669         else
 670                 up_bound = vgc_bound - (-77 - rssi);
 671
 672         if (up_bound < low_bound)
 673                 up_bound = low_bound;
 674
 675         if (r17 > up_bound) {
 676                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
 677                 rt2x00dev->link.vgc_level = up_bound;
 678         } else if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
 679                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
 680                 rt2x00dev->link.vgc_level = r17;
 681         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
 682                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
 683                 rt2x00dev->link.vgc_level = r17;
 684         }
 685 }
 686
 687 /*
 688  * Initialization functions.
 689  */
 690 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
 691 {
 692         u16 reg;
 693
 694         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
 695                                     USB_MODE_TEST, REGISTER_TIMEOUT);
 696         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
 697                                     0x00f0, REGISTER_TIMEOUT);
 698
 699         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 700         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 701         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 702
 703         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
 704         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
 705
 706         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 707         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
 708         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
 709         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 710         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 711
 712         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 713         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 714         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 715         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 716         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 717
 718         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
 719         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
 720         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
 721         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
 722         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
 723         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
 724
 725         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
 726         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
 727         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
 728         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
 729         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
 730         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
 731
 732         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 733         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
 734         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
 735         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
 736         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
 737         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 738
 739         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 740         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
 741         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
 742         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
 743         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
 744         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 745
 746         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
 747         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
 748
 749         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 750                 return -EBUSY;
 751
 752         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 753         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 754         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 755         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
 756         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 757
 758         if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
 759                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
 760                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 0);
 761         } else {
 762                 reg = 0;
 763                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 1);
 764                 rt2x00_set_field16(&reg, PHY_CSR2_LNA_MODE, 3);
 765         }
 766         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
 767
 768         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
 769         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
 770         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
 771         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
 772
 773         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 774         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
 775                            rt2x00dev->rx->data_size);
 776         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
 777
 778         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 779         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 780         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
 781         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 782
 783         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 784         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
 785         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 786
 787         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
 788         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
 789         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
 790
 791         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 792         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
 793         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 794
 795         return 0;
 796 }
 797
 798 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
 799 {
 800         unsigned int i;
 801         u16 eeprom;
 802         u8 value;
 803         u8 reg_id;
 804
 805         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 806                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
 807                 if ((value != 0xff) && (value != 0x00))
 808                         goto continue_csr_init;
 809                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
 810                 udelay(REGISTER_BUSY_DELAY);
 811         }
 812
 813         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
 814         return -EACCES;
 815
 816 continue_csr_init:
 817         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
 818         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
 819         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
 820         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
 821         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
 822         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
 823         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
 824         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
 825         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
 826         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
 827         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
 828         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
 829         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
 830         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
 831         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
 832         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
 833         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
 834         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
 835         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
 836         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
 837         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
 838         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
 839         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
 840         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
 841         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
 842         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
 843         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
 844         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
 845         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
 846         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
 847         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
 848
 849         DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
 850         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 851                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 852
 853                 if (eeprom != 0xffff && eeprom != 0x0000) {
 854                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 855                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 856                         DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
 857                               reg_id, value);
 858                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
 859                 }
 860         }
 861         DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
 862
 863         return 0;
 864 }
 865
 866 /*
 867  * Device state switch handlers.
 868  */
 869 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
 870                                 enum dev_state state)
 871 {
 872         u16 reg;
 873
 874         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 875         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
 876                            state == STATE_RADIO_RX_OFF);
 877         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 878 }
 879
 880 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
 881 {
 882         /*
 883          * Initialize all registers.
 884          */
 885         if (rt2500usb_init_registers(rt2x00dev) ||
 886             rt2500usb_init_bbp(rt2x00dev)) {
 887                 ERROR(rt2x00dev, "Register initialization failed.\n");
 888                 return -EIO;
 889         }
 890
 891         rt2x00usb_enable_radio(rt2x00dev);
 892
 893         /*
 894          * Enable LED
 895          */
 896         rt2500usb_enable_led(rt2x00dev);
 897
 898         return 0;
 899 }
 900
 901 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
 902 {
 903         /*
 904          * Disable LED
 905          */
 906         rt2500usb_disable_led(rt2x00dev);
 907
 908         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
 909         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
 910
 911         /*
 912          * Disable synchronisation.
 913          */
 914         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 915
 916         rt2x00usb_disable_radio(rt2x00dev);
 917 }
 918
 919 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
 920                                enum dev_state state)
 921 {
 922         u16 reg;
 923         u16 reg2;
 924         unsigned int i;
 925         char put_to_sleep;
 926         char bbp_state;
 927         char rf_state;
 928
 929         put_to_sleep = (state != STATE_AWAKE);
 930
 931         reg = 0;
 932         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
 933         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
 934         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
 935         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 936         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
 937         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 938
 939         /*
 940          * Device is not guaranteed to be in the requested state yet.
 941          * We must wait until the register indicates that the
 942          * device has entered the correct state.
 943          */
 944         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 945                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
 946                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
 947                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
 948                 if (bbp_state == state && rf_state == state)
 949                         return 0;
 950                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 951                 msleep(30);
 952         }
 953
 954         NOTICE(rt2x00dev, "Device failed to enter state %d, "
 955                "current device state: bbp %d and rf %d.\n",
 956                state, bbp_state, rf_state);
 957
 958         return -EBUSY;
 959 }
 960
 961 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
 962                                       enum dev_state state)
 963 {
 964         int retval = 0;
 965
 966         switch (state) {
 967         case STATE_RADIO_ON:
 968                 retval = rt2500usb_enable_radio(rt2x00dev);
 969                 break;
 970         case STATE_RADIO_OFF:
 971                 rt2500usb_disable_radio(rt2x00dev);
 972                 break;
 973         case STATE_RADIO_RX_ON:
 974         case STATE_RADIO_RX_OFF:
 975                 rt2500usb_toggle_rx(rt2x00dev, state);
 976                 break;
 977         case STATE_DEEP_SLEEP:
 978         case STATE_SLEEP:
 979         case STATE_STANDBY:
 980         case STATE_AWAKE:
 981                 retval = rt2500usb_set_state(rt2x00dev, state);
 982                 break;
 983         default:
 984                 retval = -ENOTSUPP;
 985                 break;
 986         }
 987
 988         return retval;
 989 }
 990
 991 /*
 992  * TX descriptor initialization
 993  */
 994 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 995                                     struct data_desc *txd,
 996                                     struct txdata_entry_desc *desc,
 997                                     struct ieee80211_hdr *ieee80211hdr,
 998                                     unsigned int length,
 999                                     struct ieee80211_tx_control *control)
1000 {
1001         u32 word;
1002
1003         /*
1004          * Start writing the descriptor words.
1005          */
1006         rt2x00_desc_read(txd, 1, &word);
1007         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1008         rt2x00_set_field32(&word, TXD_W1_AIFS, desc->aifs);
1009         rt2x00_set_field32(&word, TXD_W1_CWMIN, desc->cw_min);
1010         rt2x00_set_field32(&word, TXD_W1_CWMAX, desc->cw_max);
1011         rt2x00_desc_write(txd, 1, word);
1012
1013         rt2x00_desc_read(txd, 2, &word);
1014         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, desc->signal);
1015         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, desc->service);
1016         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, desc->length_low);
1017         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, desc->length_high);
1018         rt2x00_desc_write(txd, 2, word);
1019
1020         rt2x00_desc_read(txd, 0, &word);
1021         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, control->retry_limit);
1022         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1023                            test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
1024         rt2x00_set_field32(&word, TXD_W0_ACK,
1025                            !(control->flags & IEEE80211_TXCTL_NO_ACK));
1026         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1027                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
1028         rt2x00_set_field32(&word, TXD_W0_OFDM,
1029                            test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
1030         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1031                            !!(control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT));
1032         rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
1033         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, length);
1034         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1035         rt2x00_desc_write(txd, 0, word);
1036 }
1037
1038 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1039                                      struct sk_buff *skb)
1040 {
1041         int length;
1042
1043         /*
1044          * The length _must_ be a multiple of 2,
1045          * but it must _not_ be a multiple of the USB packet size.
1046          */
1047         length = roundup(skb->len, 2);
1048         length += (2 * !(length % rt2x00dev->usb_maxpacket));
1049
1050         return length;
1051 }
1052
1053 /*
1054  * TX data initialization
1055  */
1056 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1057                                     unsigned int queue)
1058 {
1059         u16 reg;
1060
1061         if (queue != IEEE80211_TX_QUEUE_BEACON)
1062                 return;
1063
1064         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1065         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1066                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1067                 /*
1068                  * Beacon generation will fail initially.
1069                  * To prevent this we need to register the TXRX_CSR19
1070                  * register several times.
1071                  */
1072                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1073                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1074                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1075                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1076                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1077         }
1078 }
1079
1080 /*
1081  * RX control handlers
1082  */
1083 static void rt2500usb_fill_rxdone(struct data_entry *entry,
1084                                   struct rxdata_entry_desc *desc)
1085 {
1086         struct urb *urb = entry->priv;
1087         struct data_desc *rxd = (struct data_desc *)(entry->skb->data +
1088                                                      (urb->actual_length -
1089                                                       entry->ring->desc_size));
1090         u32 word0;
1091         u32 word1;
1092
1093         rt2x00_desc_read(rxd, 0, &word0);
1094         rt2x00_desc_read(rxd, 1, &word1);
1095
1096         desc->flags = 0;
1097         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1098                 desc->flags |= RX_FLAG_FAILED_FCS_CRC;
1099         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1100                 desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1101
1102         /*
1103          * Obtain the status about this packet.
1104          */
1105         desc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1106         desc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1107             entry->ring->rt2x00dev->rssi_offset;
1108         desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1109         desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1110
1111         return;
1112 }
1113
1114 /*
1115  * Interrupt functions.
1116  */
1117 static void rt2500usb_beacondone(struct urb *urb)
1118 {
1119         struct data_entry *entry = (struct data_entry *)urb->context;
1120         struct data_ring *ring = entry->ring;
1121
1122         if (!test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags))
1123                 return;
1124
1125         /*
1126          * Check if this was the guardian beacon,
1127          * if that was the case we need to send the real beacon now.
1128          * Otherwise we should free the sk_buffer, the device
1129          * should be doing the rest of the work now.
1130          */
1131         if (ring->index == 1) {
1132                 rt2x00_ring_index_done_inc(ring);
1133                 entry = rt2x00_get_data_entry(ring);
1134                 usb_submit_urb(entry->priv, GFP_ATOMIC);
1135                 rt2x00_ring_index_inc(ring);
1136         } else if (ring->index_done == 1) {
1137                 entry = rt2x00_get_data_entry_done(ring);
1138                 if (entry->skb) {
1139                         dev_kfree_skb(entry->skb);
1140                         entry->skb = NULL;
1141                 }
1142                 rt2x00_ring_index_done_inc(ring);
1143         }
1144 }
1145
1146 /*
1147  * Device probe functions.
1148  */
1149 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1150 {
1151         u16 word;
1152         u8 *mac;
1153
1154         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1155
1156         /*
1157          * Start validation of the data that has been read.
1158          */
1159         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1160         if (!is_valid_ether_addr(mac)) {
1161                 DECLARE_MAC_BUF(macbuf);
1162
1163                 random_ether_addr(mac);
1164                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1165         }
1166
1167         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1168         if (word == 0xffff) {
1169                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1170                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1171                                    ANTENNA_SW_DIVERSITY);
1172                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1173                                    ANTENNA_SW_DIVERSITY);
1174                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1175                                    LED_MODE_DEFAULT);
1176                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1177                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1178                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1179                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1180                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1181         }
1182
1183         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1184         if (word == 0xffff) {
1185                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1186                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1187                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1188                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1189                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1190         }
1191
1192         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1193         if (word == 0xffff) {
1194                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1195                                    DEFAULT_RSSI_OFFSET);
1196                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1197                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1198         }
1199
1200         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1201         if (word == 0xffff) {
1202                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1203                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1204                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1205         }
1206
1207         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1208         if (word == 0xffff) {
1209                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1210                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1211                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1212         }
1213
1214         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1215         if (word == 0xffff) {
1216                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1217                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1218                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1219                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1220         }
1221
1222         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1223         if (word == 0xffff) {
1224                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1225                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1226                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1227                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1228         }
1229
1230         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1231         if (word == 0xffff) {
1232                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1233                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1234                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1235                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1236         }
1237
1238         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1239         if (word == 0xffff) {
1240                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1241                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1242                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1243                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1244         }
1245
1246         return 0;
1247 }
1248
1249 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1250 {
1251         u16 reg;
1252         u16 value;
1253         u16 eeprom;
1254
1255         /*
1256          * Read EEPROM word for configuration.
1257          */
1258         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1259
1260         /*
1261          * Identify RF chipset.
1262          */
1263         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1264         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1265         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1266
1267         if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
1268                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1269                 return -ENODEV;
1270         }
1271
1272         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1273             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1274             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1275             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1276             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1277             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1278                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1279                 return -ENODEV;
1280         }
1281
1282         /*
1283          * Identify default antenna configuration.
1284          */
1285         rt2x00dev->default_ant.tx =
1286             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1287         rt2x00dev->default_ant.rx =
1288             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1289
1290         /*
1291          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1292          * I am not 100% sure about this, but the legacy drivers do not
1293          * indicate antenna swapping in software is required when
1294          * diversity is enabled.
1295          */
1296         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1297                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1298         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1299                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1300
1301         /*
1302          * Store led mode, for correct led behaviour.
1303          */
1304         rt2x00dev->led_mode =
1305             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1306
1307         /*
1308          * Check if the BBP tuning should be disabled.
1309          */
1310         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1311         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1312                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1313
1314         /*
1315          * Read the RSSI <-> dBm offset information.
1316          */
1317         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1318         rt2x00dev->rssi_offset =
1319             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1320
1321         return 0;
1322 }
1323
1324 /*
1325  * RF value list for RF2522
1326  * Supports: 2.4 GHz
1327  */
1328 static const struct rf_channel rf_vals_bg_2522[] = {
1329         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1330         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1331         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1332         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1333         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1334         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1335         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1336         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1337         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1338         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1339         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1340         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1341         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1342         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1343 };
1344
1345 /*
1346  * RF value list for RF2523
1347  * Supports: 2.4 GHz
1348  */
1349 static const struct rf_channel rf_vals_bg_2523[] = {
1350         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1351         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1352         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1353         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1354         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1355         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1356         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1357         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1358         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1359         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1360         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1361         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1362         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1363         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1364 };
1365
1366 /*
1367  * RF value list for RF2524
1368  * Supports: 2.4 GHz
1369  */
1370 static const struct rf_channel rf_vals_bg_2524[] = {
1371         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1372         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1373         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1374         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1375         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1376         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1377         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1378         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1379         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1380         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1381         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1382         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1383         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1384         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1385 };
1386
1387 /*
1388  * RF value list for RF2525
1389  * Supports: 2.4 GHz
1390  */
1391 static const struct rf_channel rf_vals_bg_2525[] = {
1392         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1393         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1394         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1395         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1396         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1397         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1398         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1399         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1400         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1401         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1402         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1403         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1404         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1405         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1406 };
1407
1408 /*
1409  * RF value list for RF2525e
1410  * Supports: 2.4 GHz
1411  */
1412 static const struct rf_channel rf_vals_bg_2525e[] = {
1413         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1414         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1415         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1416         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1417         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1418         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1419         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1420         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1421         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1422         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1423         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1424         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1425         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1426         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1427 };
1428
1429 /*
1430  * RF value list for RF5222
1431  * Supports: 2.4 GHz & 5.2 GHz
1432  */
1433 static const struct rf_channel rf_vals_5222[] = {
1434         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1435         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1436         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1437         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1438         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1439         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1440         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1441         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1442         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1443         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1444         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1445         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1446         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1447         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1448
1449         /* 802.11 UNI / HyperLan 2 */
1450         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1451         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1452         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1453         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1454         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1455         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1456         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1457         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1458
1459         /* 802.11 HyperLan 2 */
1460         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1461         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1462         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1463         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1464         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1465         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1466         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1467         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1468         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1469         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1470
1471         /* 802.11 UNII */
1472         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1473         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1474         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1475         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1476         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1477 };
1478
1479 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1480 {
1481         struct hw_mode_spec *spec = &rt2x00dev->spec;
1482         u8 *txpower;
1483         unsigned int i;
1484
1485         /*
1486          * Initialize all hw fields.
1487          */
1488         rt2x00dev->hw->flags =
1489             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1490             IEEE80211_HW_RX_INCLUDES_FCS |
1491             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1492         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1493         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1494         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1495         rt2x00dev->hw->queues = 2;
1496
1497         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1498         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1499                                 rt2x00_eeprom_addr(rt2x00dev,
1500                                                    EEPROM_MAC_ADDR_0));
1501
1502         /*
1503          * Convert tx_power array in eeprom.
1504          */
1505         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1506         for (i = 0; i < 14; i++)
1507                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1508
1509         /*
1510          * Initialize hw_mode information.
1511          */
1512         spec->num_modes = 2;
1513         spec->num_rates = 12;
1514         spec->tx_power_a = NULL;
1515         spec->tx_power_bg = txpower;
1516         spec->tx_power_default = DEFAULT_TXPOWER;
1517
1518         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1519                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1520                 spec->channels = rf_vals_bg_2522;
1521         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1522                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1523                 spec->channels = rf_vals_bg_2523;
1524         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1525                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1526                 spec->channels = rf_vals_bg_2524;
1527         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1528                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1529                 spec->channels = rf_vals_bg_2525;
1530         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1531                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1532                 spec->channels = rf_vals_bg_2525e;
1533         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1534                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1535                 spec->channels = rf_vals_5222;
1536                 spec->num_modes = 3;
1537         }
1538 }
1539
1540 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1541 {
1542         int retval;
1543
1544         /*
1545          * Allocate eeprom data.
1546          */
1547         retval = rt2500usb_validate_eeprom(rt2x00dev);
1548         if (retval)
1549                 return retval;
1550
1551         retval = rt2500usb_init_eeprom(rt2x00dev);
1552         if (retval)
1553                 return retval;
1554
1555         /*
1556          * Initialize hw specifications.
1557          */
1558         rt2500usb_probe_hw_mode(rt2x00dev);
1559
1560         /*
1561          * This device requires the beacon ring
1562          */
1563         __set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
1564
1565         /*
1566          * Set the rssi offset.
1567          */
1568         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1569
1570         return 0;
1571 }
1572
1573 /*
1574  * IEEE80211 stack callback functions.
1575  */
1576 static void rt2500usb_configure_filter(struct ieee80211_hw *hw,
1577                                        unsigned int changed_flags,
1578                                        unsigned int *total_flags,
1579                                        int mc_count,
1580                                        struct dev_addr_list *mc_list)
1581 {
1582         struct rt2x00_dev *rt2x00dev = hw->priv;
1583         struct interface *intf = &rt2x00dev->interface;
1584         u16 reg;
1585
1586         /*
1587          * Mask off any flags we are going to ignore from
1588          * the total_flags field.
1589          */
1590         *total_flags &=
1591             FIF_ALLMULTI |
1592             FIF_FCSFAIL |
1593             FIF_PLCPFAIL |
1594             FIF_CONTROL |
1595             FIF_OTHER_BSS |
1596             FIF_PROMISC_IN_BSS;
1597
1598         /*
1599          * Apply some rules to the filters:
1600          * - Some filters imply different filters to be set.
1601          * - Some things we can't filter out at all.
1602          * - Some filters are set based on interface type.
1603          */
1604         if (mc_count)
1605                 *total_flags |= FIF_ALLMULTI;
1606         if (*total_flags & FIF_OTHER_BSS ||
1607             *total_flags & FIF_PROMISC_IN_BSS)
1608                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1609         if (is_interface_type(intf, IEEE80211_IF_TYPE_AP))
1610                 *total_flags |= FIF_PROMISC_IN_BSS;
1611
1612         /*
1613          * Check if there is any work left for us.
1614          */
1615         if (intf->filter == *total_flags)
1616                 return;
1617         intf->filter = *total_flags;
1618
1619         /*
1620          * When in atomic context, reschedule and let rt2x00lib
1621          * call this function again.
1622          */
1623         if (in_atomic()) {
1624                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1625                 return;
1626         }
1627
1628         /*
1629          * Start configuration steps.
1630          * Note that the version error will always be dropped
1631          * and broadcast frames will always be accepted since
1632          * there is no filter for it at this time.
1633          */
1634         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
1635         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
1636                            !(*total_flags & FIF_FCSFAIL));
1637         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
1638                            !(*total_flags & FIF_PLCPFAIL));
1639         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
1640                            !(*total_flags & FIF_CONTROL));
1641         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
1642                            !(*total_flags & FIF_PROMISC_IN_BSS));
1643         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
1644                            !(*total_flags & FIF_PROMISC_IN_BSS));
1645         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
1646         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
1647                            !(*total_flags & FIF_ALLMULTI));
1648         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
1649         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
1650 }
1651
1652 static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
1653                                    struct sk_buff *skb,
1654                                    struct ieee80211_tx_control *control)
1655 {
1656         struct rt2x00_dev *rt2x00dev = hw->priv;
1657         struct usb_device *usb_dev =
1658             interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
1659         struct data_ring *ring =
1660             rt2x00lib_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1661         struct data_entry *beacon;
1662         struct data_entry *guardian;
1663         int pipe = usb_sndbulkpipe(usb_dev, 1);
1664         int length;
1665
1666         /*
1667          * Just in case the ieee80211 doesn't set this,
1668          * but we need this queue set for the descriptor
1669          * initialization.
1670          */
1671         control->queue = IEEE80211_TX_QUEUE_BEACON;
1672
1673         /*
1674          * Obtain 2 entries, one for the guardian byte,
1675          * the second for the actual beacon.
1676          */
1677         guardian = rt2x00_get_data_entry(ring);
1678         rt2x00_ring_index_inc(ring);
1679         beacon = rt2x00_get_data_entry(ring);
1680
1681         /*
1682          * First we create the beacon.
1683          */
1684         skb_push(skb, ring->desc_size);
1685         memset(skb->data, 0, ring->desc_size);
1686
1687         rt2x00lib_write_tx_desc(rt2x00dev, (struct data_desc *)skb->data,
1688                                 (struct ieee80211_hdr *)(skb->data +
1689                                                          ring->desc_size),
1690                                 skb->len - ring->desc_size, control);
1691
1692         length = rt2500usb_get_tx_data_len(rt2x00dev, skb);
1693
1694         usb_fill_bulk_urb(beacon->priv, usb_dev, pipe,
1695                           skb->data, length, rt2500usb_beacondone, beacon);
1696
1697         beacon->skb = skb;
1698
1699         /*
1700          * Second we need to create the guardian byte.
1701          * We only need a single byte, so lets recycle
1702          * the 'flags' field we are not using for beacons.
1703          */
1704         guardian->flags = 0;
1705         usb_fill_bulk_urb(guardian->priv, usb_dev, pipe,
1706                           &guardian->flags, 1, rt2500usb_beacondone, guardian);
1707
1708         /*
1709          * Send out the guardian byte.
1710          */
1711         usb_submit_urb(guardian->priv, GFP_ATOMIC);
1712
1713         /*
1714          * Enable beacon generation.
1715          */
1716         rt2500usb_kick_tx_queue(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1717
1718         return 0;
1719 }
1720
1721 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1722         .tx                     = rt2x00mac_tx,
1723         .start                  = rt2x00mac_start,
1724         .stop                   = rt2x00mac_stop,
1725         .add_interface          = rt2x00mac_add_interface,
1726         .remove_interface       = rt2x00mac_remove_interface,
1727         .config                 = rt2x00mac_config,
1728         .config_interface       = rt2x00mac_config_interface,
1729         .configure_filter       = rt2500usb_configure_filter,
1730         .get_stats              = rt2x00mac_get_stats,
1731         .erp_ie_changed         = rt2x00mac_erp_ie_changed,
1732         .conf_tx                = rt2x00mac_conf_tx,
1733         .get_tx_stats           = rt2x00mac_get_tx_stats,
1734         .beacon_update          = rt2500usb_beacon_update,
1735 };
1736
1737 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1738         .probe_hw               = rt2500usb_probe_hw,
1739         .initialize             = rt2x00usb_initialize,
1740         .uninitialize           = rt2x00usb_uninitialize,
1741         .set_device_state       = rt2500usb_set_device_state,
1742         .link_stats             = rt2500usb_link_stats,
1743         .reset_tuner            = rt2500usb_reset_tuner,
1744         .link_tuner             = rt2500usb_link_tuner,
1745         .write_tx_desc          = rt2500usb_write_tx_desc,
1746         .write_tx_data          = rt2x00usb_write_tx_data,
1747         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1748         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1749         .fill_rxdone            = rt2500usb_fill_rxdone,
1750         .config_mac_addr        = rt2500usb_config_mac_addr,
1751         .config_bssid           = rt2500usb_config_bssid,
1752         .config_type            = rt2500usb_config_type,
1753         .config_preamble        = rt2500usb_config_preamble,
1754         .config                 = rt2500usb_config,
1755 };
1756
1757 static const struct rt2x00_ops rt2500usb_ops = {
1758         .name           = DRV_NAME,
1759         .rxd_size       = RXD_DESC_SIZE,
1760         .txd_size       = TXD_DESC_SIZE,
1761         .eeprom_size    = EEPROM_SIZE,
1762         .rf_size        = RF_SIZE,
1763         .lib            = &rt2500usb_rt2x00_ops,
1764         .hw             = &rt2500usb_mac80211_ops,
1765 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1766         .debugfs        = &rt2500usb_rt2x00debug,
1767 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1768 };
1769
1770 /*
1771  * rt2500usb module information.
1772  */
1773 static struct usb_device_id rt2500usb_device_table[] = {
1774         /* ASUS */
1775         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1776         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1777         /* Belkin */
1778         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1779         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1780         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1781         /* Cisco Systems */
1782         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1783         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1784         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1785         /* Conceptronic */
1786         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1787         /* D-LINK */
1788         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1789         /* Gigabyte */
1790         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1791         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1792         /* Hercules */
1793         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1794         /* Melco */
1795         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1796         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1797         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1798         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1799
1800         /* MSI */
1801         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1802         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1803         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1804         /* Ralink */
1805         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1806         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1807         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1808         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1809         /* Siemens */
1810         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1811         /* SMC */
1812         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1813         /* Spairon */
1814         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1815         /* Trust */
1816         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1817         /* Zinwell */
1818         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1819         { 0, }
1820 };
1821
1822 MODULE_AUTHOR(DRV_PROJECT);
1823 MODULE_VERSION(DRV_VERSION);
1824 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1825 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1826 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1827 MODULE_LICENSE("GPL");
1828
1829 static struct usb_driver rt2500usb_driver = {
1830         .name           = DRV_NAME,
1831         .id_table       = rt2500usb_device_table,
1832         .probe          = rt2x00usb_probe,
1833         .disconnect     = rt2x00usb_disconnect,
1834         .suspend        = rt2x00usb_suspend,
1835         .resume         = rt2x00usb_resume,
1836 };
1837
1838 static int __init rt2500usb_init(void)
1839 {
1840         return usb_register(&rt2500usb_driver);
1841 }
1842
1843 static void __exit rt2500usb_exit(void)
1844 {
1845         usb_deregister(&rt2500usb_driver);
1846 }
1847
1848 module_init(rt2500usb_init);
1849 module_exit(rt2500usb_exit);