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

   1 /*
   2         Copyright (C) 2004 - 2007 rt2x00 SourceForge Project
   3         <http://rt2x00.serialmonkey.com>
   4
   5         This program is free software; you can redistribute it and/or modify
   6         it under the terms of the GNU General Public License as published by
   7         the Free Software Foundation; either version 2 of the License, or
   8         (at your option) any later version.
   9
  10         This program is distributed in the hope that it will be useful,
  11         but WITHOUT ANY WARRANTY; without even the implied warranty of
  12         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13         GNU General Public License for more details.
  14
  15         You should have received a copy of the GNU General Public License
  16         along with this program; if not, write to the
  17         Free Software Foundation, Inc.,
  18         59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 /*
  22         Module: rt2500usb
  23         Abstract: rt2500usb device specific routines.
  24         Supported chipsets: RT2570.
  25  */
  26
  27 /*
  28  * Set enviroment defines for rt2x00.h
  29  */
  30 #define DRV_NAME "rt2500usb"
  31
  32 #include <linux/delay.h>
  33 #include <linux/etherdevice.h>
  34 #include <linux/init.h>
  35 #include <linux/kernel.h>
  36 #include <linux/module.h>
  37 #include <linux/usb.h>
  38
  39 #include "rt2x00.h"
  40 #include "rt2x00usb.h"
  41 #include "rt2500usb.h"
  42
  43 /*
  44  * Register access.
  45  * All access to the CSR registers will go through the methods
  46  * rt2500usb_register_read and rt2500usb_register_write.
  47  * BBP and RF register require indirect register access,
  48  * and use the CSR registers BBPCSR and RFCSR to achieve this.
  49  * These indirect registers work with busy bits,
  50  * and we will try maximal REGISTER_BUSY_COUNT times to access
  51  * the register while taking a REGISTER_BUSY_DELAY us delay
  52  * between each attampt. When the busy bit is still set at that time,
  53  * the access attempt is considered to have failed,
  54  * and we will print an error.
  55  */
  56 static inline void rt2500usb_register_read(const struct rt2x00_dev *rt2x00dev,
  57                                            const unsigned int offset,
  58                                            u16 *value)
  59 {
  60         __le16 reg;
  61         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  62                                       USB_VENDOR_REQUEST_IN, offset,
  63                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
  64         *value = le16_to_cpu(reg);
  65 }
  66
  67 static inline void rt2500usb_register_multiread(const struct rt2x00_dev
  68                                                 *rt2x00dev,
  69                                                 const unsigned int offset,
  70                                                 void *value, const u16 length)
  71 {
  72         int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
  73         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  74                                       USB_VENDOR_REQUEST_IN, offset,
  75                                       value, length, timeout);
  76 }
  77
  78 static inline void rt2500usb_register_write(const struct rt2x00_dev *rt2x00dev,
  79                                             const unsigned int offset,
  80                                             u16 value)
  81 {
  82         __le16 reg = cpu_to_le16(value);
  83         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
  84                                       USB_VENDOR_REQUEST_OUT, offset,
  85                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
  86 }
  87
  88 static inline void rt2500usb_register_multiwrite(const struct rt2x00_dev
  89                                                  *rt2x00dev,
  90                                                  const unsigned int offset,
  91                                                  void *value, const u16 length)
  92 {
  93         int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
  94         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
  95                                       USB_VENDOR_REQUEST_OUT, offset,
  96                                       value, length, timeout);
  97 }
  98
  99 static u16 rt2500usb_bbp_check(const struct rt2x00_dev *rt2x00dev)
 100 {
 101         u16 reg;
 102         unsigned int i;
 103
 104         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 105                 rt2500usb_register_read(rt2x00dev, PHY_CSR8, &reg);
 106                 if (!rt2x00_get_field16(reg, PHY_CSR8_BUSY))
 107                         break;
 108                 udelay(REGISTER_BUSY_DELAY);
 109         }
 110
 111         return reg;
 112 }
 113
 114 static void rt2500usb_bbp_write(const struct rt2x00_dev *rt2x00dev,
 115                                 const unsigned int word, const u8 value)
 116 {
 117         u16 reg;
 118
 119         /*
 120          * Wait until the BBP becomes ready.
 121          */
 122         reg = rt2500usb_bbp_check(rt2x00dev);
 123         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 124                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n");
 125                 return;
 126         }
 127
 128         /*
 129          * Write the data into the BBP.
 130          */
 131         reg = 0;
 132         rt2x00_set_field16(&reg, PHY_CSR7_DATA, value);
 133         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 134         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 0);
 135
 136         rt2500usb_register_write(rt2x00dev, PHY_CSR7, reg);
 137 }
 138
 139 static void rt2500usb_bbp_read(const struct rt2x00_dev *rt2x00dev,
 140                                const unsigned int word, u8 *value)
 141 {
 142         u16 reg;
 143
 144         /*
 145          * Wait until the BBP becomes ready.
 146          */
 147         reg = rt2500usb_bbp_check(rt2x00dev);
 148         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 149                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
 150                 return;
 151         }
 152
 153         /*
 154          * Write the request into the BBP.
 155          */
 156         reg = 0;
 157         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 158         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 1);
 159
 160         rt2500usb_register_write(rt2x00dev, PHY_CSR7, reg);
 161
 162         /*
 163          * Wait until the BBP becomes ready.
 164          */
 165         reg = rt2500usb_bbp_check(rt2x00dev);
 166         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 167                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
 168                 *value = 0xff;
 169                 return;
 170         }
 171
 172         rt2500usb_register_read(rt2x00dev, PHY_CSR7, &reg);
 173         *value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
 174 }
 175
 176 static void rt2500usb_rf_write(const struct rt2x00_dev *rt2x00dev,
 177                                const unsigned int word, const u32 value)
 178 {
 179         u16 reg;
 180         unsigned int i;
 181
 182         if (!word)
 183                 return;
 184
 185         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 186                 rt2500usb_register_read(rt2x00dev, PHY_CSR10, &reg);
 187                 if (!rt2x00_get_field16(reg, PHY_CSR10_RF_BUSY))
 188                         goto rf_write;
 189                 udelay(REGISTER_BUSY_DELAY);
 190         }
 191
 192         ERROR(rt2x00dev, "PHY_CSR10 register busy. Write failed.\n");
 193         return;
 194
 195 rf_write:
 196         reg = 0;
 197         rt2x00_set_field16(&reg, PHY_CSR9_RF_VALUE, value);
 198         rt2500usb_register_write(rt2x00dev, PHY_CSR9, reg);
 199
 200         reg = 0;
 201         rt2x00_set_field16(&reg, PHY_CSR10_RF_VALUE, value >> 16);
 202         rt2x00_set_field16(&reg, PHY_CSR10_RF_NUMBER_OF_BITS, 20);
 203         rt2x00_set_field16(&reg, PHY_CSR10_RF_IF_SELECT, 0);
 204         rt2x00_set_field16(&reg, PHY_CSR10_RF_BUSY, 1);
 205
 206         rt2500usb_register_write(rt2x00dev, PHY_CSR10, reg);
 207         rt2x00_rf_write(rt2x00dev, word, value);
 208 }
 209
 210 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 211 #define CSR_OFFSET(__word)      ( CSR_REG_BASE + ((__word) * sizeof(u16)) )
 212
 213 static void rt2500usb_read_csr(const struct rt2x00_dev *rt2x00dev,
 214                                const unsigned int word, u32 *data)
 215 {
 216         rt2500usb_register_read(rt2x00dev, CSR_OFFSET(word), (u16 *) data);
 217 }
 218
 219 static void rt2500usb_write_csr(const struct rt2x00_dev *rt2x00dev,
 220                                 const unsigned int word, u32 data)
 221 {
 222         rt2500usb_register_write(rt2x00dev, CSR_OFFSET(word), data);
 223 }
 224
 225 static const struct rt2x00debug rt2500usb_rt2x00debug = {
 226         .owner  = THIS_MODULE,
 227         .csr    = {
 228                 .read           = rt2500usb_read_csr,
 229                 .write          = rt2500usb_write_csr,
 230                 .word_size      = sizeof(u16),
 231                 .word_count     = CSR_REG_SIZE / sizeof(u16),
 232         },
 233         .eeprom = {
 234                 .read           = rt2x00_eeprom_read,
 235                 .write          = rt2x00_eeprom_write,
 236                 .word_size      = sizeof(u16),
 237                 .word_count     = EEPROM_SIZE / sizeof(u16),
 238         },
 239         .bbp    = {
 240                 .read           = rt2500usb_bbp_read,
 241                 .write          = rt2500usb_bbp_write,
 242                 .word_size      = sizeof(u8),
 243                 .word_count     = BBP_SIZE / sizeof(u8),
 244         },
 245         .rf     = {
 246                 .read           = rt2x00_rf_read,
 247                 .write          = rt2500usb_rf_write,
 248                 .word_size      = sizeof(u32),
 249                 .word_count     = RF_SIZE / sizeof(u32),
 250         },
 251 };
 252 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 253
 254 /*
 255  * Configuration handlers.
 256  */
 257 static void rt2500usb_config_mac_addr(struct rt2x00_dev *rt2x00dev,
 258                                       __le32 *mac)
 259 {
 260         rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, mac,
 261                                       (3 * sizeof(__le16)));
 262 }
 263
 264 static void rt2500usb_config_bssid(struct rt2x00_dev *rt2x00dev,
 265                                    __le32 *bssid)
 266 {
 267         rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, bssid,
 268                                       (3 * sizeof(__le16)));
 269 }
 270
 271 static void rt2500usb_config_type(struct rt2x00_dev *rt2x00dev, const int type,
 272                                   const int tsf_sync)
 273 {
 274         u16 reg;
 275
 276         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 277
 278         /*
 279          * Enable beacon config
 280          */
 281         rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
 282         rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET,
 283                            (PREAMBLE + get_duration(IEEE80211_HEADER, 20)) >> 6);
 284         if (type == IEEE80211_IF_TYPE_STA)
 285                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW, 0);
 286         else
 287                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW, 2);
 288         rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
 289
 290         /*
 291          * Enable synchronisation.
 292          */
 293         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 294         rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
 295         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 296
 297         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 298         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
 299         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
 300         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
 301         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, tsf_sync);
 302         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 303 }
 304
 305 static void rt2500usb_config_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_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 (ant->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, &libconf->ant);
 491         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
 492                 rt2500usb_config_duration(rt2x00dev, libconf);
 493 }
 494
 495 /*
 496  * LED functions.
 497  */
 498 static void rt2500usb_enable_led(struct rt2x00_dev *rt2x00dev)
 499 {
 500         u16 reg;
 501
 502         rt2500usb_register_read(rt2x00dev, MAC_CSR21, &reg);
 503         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, 70);
 504         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, 30);
 505         rt2500usb_register_write(rt2x00dev, MAC_CSR21, reg);
 506
 507         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 508
 509         if (rt2x00dev->led_mode == LED_MODE_TXRX_ACTIVITY) {
 510                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 1);
 511                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 512         } else if (rt2x00dev->led_mode == LED_MODE_ASUS) {
 513                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 514                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 1);
 515         } else {
 516                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 1);
 517                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 1);
 518         }
 519
 520         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 521 }
 522
 523 static void rt2500usb_disable_led(struct rt2x00_dev *rt2x00dev)
 524 {
 525         u16 reg;
 526
 527         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 528         rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 529         rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 530         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 531 }
 532
 533 /*
 534  * Link tuning
 535  */
 536 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
 537                                  struct link_qual *qual)
 538 {
 539         u16 reg;
 540
 541         /*
 542          * Update FCS error count from register.
 543          */
 544         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
 545         qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
 546
 547         /*
 548          * Update False CCA count from register.
 549          */
 550         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
 551         qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
 552 }
 553
 554 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
 555 {
 556         u16 eeprom;
 557         u16 value;
 558
 559         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
 560         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
 561         rt2500usb_bbp_write(rt2x00dev, 24, value);
 562
 563         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
 564         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
 565         rt2500usb_bbp_write(rt2x00dev, 25, value);
 566
 567         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
 568         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
 569         rt2500usb_bbp_write(rt2x00dev, 61, value);
 570
 571         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
 572         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
 573         rt2500usb_bbp_write(rt2x00dev, 17, value);
 574
 575         rt2x00dev->link.vgc_level = value;
 576 }
 577
 578 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
 579 {
 580         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
 581         u16 bbp_thresh;
 582         u16 vgc_bound;
 583         u16 sens;
 584         u16 r24;
 585         u16 r25;
 586         u16 r61;
 587         u16 r17_sens;
 588         u8 r17;
 589         u8 up_bound;
 590         u8 low_bound;
 591
 592         /*
 593          * Determine the BBP tuning threshold and correctly
 594          * set BBP 24, 25 and 61.
 595          */
 596         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
 597         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
 598
 599         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
 600         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
 601         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
 602
 603         if ((rssi + bbp_thresh) > 0) {
 604                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
 605                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
 606                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
 607         } else {
 608                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
 609                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
 610                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
 611         }
 612
 613         rt2500usb_bbp_write(rt2x00dev, 24, r24);
 614         rt2500usb_bbp_write(rt2x00dev, 25, r25);
 615         rt2500usb_bbp_write(rt2x00dev, 61, r61);
 616
 617         /*
 618          * Read current r17 value, as well as the sensitivity values
 619          * for the r17 register.
 620          */
 621         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
 622         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
 623
 624         /*
 625          * A too low RSSI will cause too much false CCA which will
 626          * then corrupt the R17 tuning. To remidy this the tuning should
 627          * be stopped (While making sure the R17 value will not exceed limits)
 628          */
 629         if (rssi >= -40) {
 630                 if (r17 != 0x60)
 631                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
 632                 return;
 633         }
 634
 635         /*
 636          * Special big-R17 for short distance
 637          */
 638         if (rssi >= -58) {
 639                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
 640                 if (r17 != sens)
 641                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 642                 return;
 643         }
 644
 645         /*
 646          * Special mid-R17 for middle distance
 647          */
 648         if (rssi >= -74) {
 649                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
 650                 if (r17 != sens)
 651                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 652                 return;
 653         }
 654
 655         /*
 656          * Leave short or middle distance condition, restore r17
 657          * to the dynamic tuning range.
 658          */
 659         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
 660         vgc_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
 661
 662         low_bound = 0x32;
 663         if (rssi >= -77)
 664                 up_bound = vgc_bound;
 665         else
 666                 up_bound = vgc_bound - (-77 - rssi);
 667
 668         if (up_bound < low_bound)
 669                 up_bound = low_bound;
 670
 671         if (r17 > up_bound) {
 672                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
 673                 rt2x00dev->link.vgc_level = up_bound;
 674         } else if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
 675                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
 676                 rt2x00dev->link.vgc_level = r17;
 677         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
 678                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
 679                 rt2x00dev->link.vgc_level = r17;
 680         }
 681 }
 682
 683 /*
 684  * Initialization functions.
 685  */
 686 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
 687 {
 688         u16 reg;
 689
 690         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
 691                                     USB_MODE_TEST, REGISTER_TIMEOUT);
 692         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
 693                                     0x00f0, REGISTER_TIMEOUT);
 694
 695         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 696         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 697         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 698
 699         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
 700         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
 701
 702         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 703         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
 704         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
 705         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 706         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 707
 708         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 709         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 710         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 711         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 712         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 713
 714         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
 715         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
 716         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
 717         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
 718         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
 719         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
 720
 721         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
 722         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
 723         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
 724         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
 725         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
 726         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
 727
 728         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 729         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
 730         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
 731         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
 732         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
 733         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 734
 735         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 736         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
 737         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
 738         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
 739         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
 740         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 741
 742         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
 743         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
 744
 745         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 746                 return -EBUSY;
 747
 748         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 749         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 750         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 751         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
 752         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 753
 754         if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
 755                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
 756                 reg &= ~0x0002;
 757         } else {
 758                 reg = 0x3002;
 759         }
 760         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
 761
 762         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
 763         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
 764         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
 765         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
 766
 767         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 768         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
 769                            rt2x00dev->rx->data_size);
 770         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
 771
 772         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 773         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 774         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
 775         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 776
 777         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 778         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
 779         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 780
 781         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
 782         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
 783         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
 784
 785         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 786         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
 787         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 788
 789         return 0;
 790 }
 791
 792 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
 793 {
 794         unsigned int i;
 795         u16 eeprom;
 796         u8 value;
 797         u8 reg_id;
 798
 799         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 800                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
 801                 if ((value != 0xff) && (value != 0x00))
 802                         goto continue_csr_init;
 803                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
 804                 udelay(REGISTER_BUSY_DELAY);
 805         }
 806
 807         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
 808         return -EACCES;
 809
 810 continue_csr_init:
 811         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
 812         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
 813         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
 814         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
 815         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
 816         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
 817         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
 818         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
 819         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
 820         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
 821         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
 822         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
 823         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
 824         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
 825         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
 826         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
 827         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
 828         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
 829         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
 830         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
 831         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
 832         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
 833         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
 834         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
 835         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
 836         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
 837         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
 838         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
 839         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
 840         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
 841         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
 842
 843         DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
 844         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 845                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 846
 847                 if (eeprom != 0xffff && eeprom != 0x0000) {
 848                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 849                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 850                         DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
 851                               reg_id, value);
 852                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
 853                 }
 854         }
 855         DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
 856
 857         return 0;
 858 }
 859
 860 /*
 861  * Device state switch handlers.
 862  */
 863 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
 864                                 enum dev_state state)
 865 {
 866         u16 reg;
 867
 868         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 869         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
 870                            state == STATE_RADIO_RX_OFF);
 871         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 872 }
 873
 874 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
 875 {
 876         /*
 877          * Initialize all registers.
 878          */
 879         if (rt2500usb_init_registers(rt2x00dev) ||
 880             rt2500usb_init_bbp(rt2x00dev)) {
 881                 ERROR(rt2x00dev, "Register initialization failed.\n");
 882                 return -EIO;
 883         }
 884
 885         rt2x00usb_enable_radio(rt2x00dev);
 886
 887         /*
 888          * Enable LED
 889          */
 890         rt2500usb_enable_led(rt2x00dev);
 891
 892         return 0;
 893 }
 894
 895 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
 896 {
 897         /*
 898          * Disable LED
 899          */
 900         rt2500usb_disable_led(rt2x00dev);
 901
 902         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
 903         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
 904
 905         /*
 906          * Disable synchronisation.
 907          */
 908         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 909
 910         rt2x00usb_disable_radio(rt2x00dev);
 911 }
 912
 913 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
 914                                enum dev_state state)
 915 {
 916         u16 reg;
 917         u16 reg2;
 918         unsigned int i;
 919         char put_to_sleep;
 920         char bbp_state;
 921         char rf_state;
 922
 923         put_to_sleep = (state != STATE_AWAKE);
 924
 925         reg = 0;
 926         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
 927         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
 928         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
 929         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 930         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
 931         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 932
 933         /*
 934          * Device is not guaranteed to be in the requested state yet.
 935          * We must wait until the register indicates that the
 936          * device has entered the correct state.
 937          */
 938         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 939                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
 940                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
 941                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
 942                 if (bbp_state == state && rf_state == state)
 943                         return 0;
 944                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 945                 msleep(30);
 946         }
 947
 948         NOTICE(rt2x00dev, "Device failed to enter state %d, "
 949                "current device state: bbp %d and rf %d.\n",
 950                state, bbp_state, rf_state);
 951
 952         return -EBUSY;
 953 }
 954
 955 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
 956                                       enum dev_state state)
 957 {
 958         int retval = 0;
 959
 960         switch (state) {
 961         case STATE_RADIO_ON:
 962                 retval = rt2500usb_enable_radio(rt2x00dev);
 963                 break;
 964         case STATE_RADIO_OFF:
 965                 rt2500usb_disable_radio(rt2x00dev);
 966                 break;
 967         case STATE_RADIO_RX_ON:
 968         case STATE_RADIO_RX_OFF:
 969                 rt2500usb_toggle_rx(rt2x00dev, state);
 970                 break;
 971         case STATE_DEEP_SLEEP:
 972         case STATE_SLEEP:
 973         case STATE_STANDBY:
 974         case STATE_AWAKE:
 975                 retval = rt2500usb_set_state(rt2x00dev, state);
 976                 break;
 977         default:
 978                 retval = -ENOTSUPP;
 979                 break;
 980         }
 981
 982         return retval;
 983 }
 984
 985 /*
 986  * TX descriptor initialization
 987  */
 988 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 989                                     struct data_desc *txd,
 990                                     struct txdata_entry_desc *desc,
 991                                     struct ieee80211_hdr *ieee80211hdr,
 992                                     unsigned int length,
 993                                     struct ieee80211_tx_control *control)
 994 {
 995         u32 word;
 996
 997         /*
 998          * Start writing the descriptor words.
 999          */
1000         rt2x00_desc_read(txd, 1, &word);
1001         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1002         rt2x00_set_field32(&word, TXD_W1_AIFS, desc->aifs);
1003         rt2x00_set_field32(&word, TXD_W1_CWMIN, desc->cw_min);
1004         rt2x00_set_field32(&word, TXD_W1_CWMAX, desc->cw_max);
1005         rt2x00_desc_write(txd, 1, word);
1006
1007         rt2x00_desc_read(txd, 2, &word);
1008         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, desc->signal);
1009         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, desc->service);
1010         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, desc->length_low);
1011         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, desc->length_high);
1012         rt2x00_desc_write(txd, 2, word);
1013
1014         rt2x00_desc_read(txd, 0, &word);
1015         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, control->retry_limit);
1016         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1017                            test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
1018         rt2x00_set_field32(&word, TXD_W0_ACK,
1019                            !(control->flags & IEEE80211_TXCTL_NO_ACK));
1020         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1021                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
1022         rt2x00_set_field32(&word, TXD_W0_OFDM,
1023                            test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
1024         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1025                            !!(control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT));
1026         rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
1027         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, length);
1028         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1029         rt2x00_desc_write(txd, 0, word);
1030 }
1031
1032 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1033                                      struct sk_buff *skb)
1034 {
1035         int length;
1036
1037         /*
1038          * The length _must_ be a multiple of 2,
1039          * but it must _not_ be a multiple of the USB packet size.
1040          */
1041         length = roundup(skb->len, 2);
1042         length += (2 * !(length % rt2x00dev->usb_maxpacket));
1043
1044         return length;
1045 }
1046
1047 /*
1048  * TX data initialization
1049  */
1050 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1051                                     unsigned int queue)
1052 {
1053         u16 reg;
1054
1055         if (queue != IEEE80211_TX_QUEUE_BEACON)
1056                 return;
1057
1058         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1059         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1060                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1061                 /*
1062                  * Beacon generation will fail initially.
1063                  * To prevent this we need to register the TXRX_CSR19
1064                  * register several times.
1065                  */
1066                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1067                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
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         }
1072 }
1073
1074 /*
1075  * RX control handlers
1076  */
1077 static void rt2500usb_fill_rxdone(struct data_entry *entry,
1078                                   struct rxdata_entry_desc *desc)
1079 {
1080         struct urb *urb = entry->priv;
1081         struct data_desc *rxd = (struct data_desc *)(entry->skb->data +
1082                                                      (urb->actual_length -
1083                                                       entry->ring->desc_size));
1084         u32 word0;
1085         u32 word1;
1086
1087         rt2x00_desc_read(rxd, 0, &word0);
1088         rt2x00_desc_read(rxd, 1, &word1);
1089
1090         desc->flags = 0;
1091         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1092                 desc->flags |= RX_FLAG_FAILED_FCS_CRC;
1093         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1094                 desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1095
1096         /*
1097          * Obtain the status about this packet.
1098          */
1099         desc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1100         desc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1101             entry->ring->rt2x00dev->rssi_offset;
1102         desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1103         desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1104
1105         return;
1106 }
1107
1108 /*
1109  * Interrupt functions.
1110  */
1111 static void rt2500usb_beacondone(struct urb *urb)
1112 {
1113         struct data_entry *entry = (struct data_entry *)urb->context;
1114         struct data_ring *ring = entry->ring;
1115
1116         if (!test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags))
1117                 return;
1118
1119         /*
1120          * Check if this was the guardian beacon,
1121          * if that was the case we need to send the real beacon now.
1122          * Otherwise we should free the sk_buffer, the device
1123          * should be doing the rest of the work now.
1124          */
1125         if (ring->index == 1) {
1126                 rt2x00_ring_index_done_inc(ring);
1127                 entry = rt2x00_get_data_entry(ring);
1128                 usb_submit_urb(entry->priv, GFP_ATOMIC);
1129                 rt2x00_ring_index_inc(ring);
1130         } else if (ring->index_done == 1) {
1131                 entry = rt2x00_get_data_entry_done(ring);
1132                 if (entry->skb) {
1133                         dev_kfree_skb(entry->skb);
1134                         entry->skb = NULL;
1135                 }
1136                 rt2x00_ring_index_done_inc(ring);
1137         }
1138 }
1139
1140 /*
1141  * Device probe functions.
1142  */
1143 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1144 {
1145         u16 word;
1146         u8 *mac;
1147
1148         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1149
1150         /*
1151          * Start validation of the data that has been read.
1152          */
1153         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1154         if (!is_valid_ether_addr(mac)) {
1155                 DECLARE_MAC_BUF(macbuf);
1156
1157                 random_ether_addr(mac);
1158                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1159         }
1160
1161         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1162         if (word == 0xffff) {
1163                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1164                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1165                                    ANTENNA_SW_DIVERSITY);
1166                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1167                                    ANTENNA_SW_DIVERSITY);
1168                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1169                                    LED_MODE_DEFAULT);
1170                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1171                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1172                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1173                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1174                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1175         }
1176
1177         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1178         if (word == 0xffff) {
1179                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1180                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1181                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1182                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1183                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1184         }
1185
1186         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1187         if (word == 0xffff) {
1188                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1189                                    DEFAULT_RSSI_OFFSET);
1190                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1191                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1192         }
1193
1194         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1195         if (word == 0xffff) {
1196                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1197                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1198                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1199         }
1200
1201         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1202         if (word == 0xffff) {
1203                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1204                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1205                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1206         }
1207
1208         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1209         if (word == 0xffff) {
1210                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1211                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1212                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1213                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1214         }
1215
1216         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1217         if (word == 0xffff) {
1218                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1219                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1220                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1221                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1222         }
1223
1224         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1225         if (word == 0xffff) {
1226                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1227                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1228                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1229                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1230         }
1231
1232         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1233         if (word == 0xffff) {
1234                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1235                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1236                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1237                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1238         }
1239
1240         return 0;
1241 }
1242
1243 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1244 {
1245         u16 reg;
1246         u16 value;
1247         u16 eeprom;
1248
1249         /*
1250          * Read EEPROM word for configuration.
1251          */
1252         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1253
1254         /*
1255          * Identify RF chipset.
1256          */
1257         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1258         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1259         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1260
1261         if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
1262                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1263                 return -ENODEV;
1264         }
1265
1266         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1267             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1268             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1269             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1270             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1271             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1272                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1273                 return -ENODEV;
1274         }
1275
1276         /*
1277          * Identify default antenna configuration.
1278          */
1279         rt2x00dev->default_ant.tx =
1280             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1281         rt2x00dev->default_ant.rx =
1282             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1283
1284         /*
1285          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1286          * I am not 100% sure about this, but the legacy drivers do not
1287          * indicate antenna swapping in software is required when
1288          * diversity is enabled.
1289          */
1290         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1291                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1292         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1293                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1294
1295         /*
1296          * Store led mode, for correct led behaviour.
1297          */
1298         rt2x00dev->led_mode =
1299             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1300
1301         /*
1302          * Check if the BBP tuning should be disabled.
1303          */
1304         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1305         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1306                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1307
1308         /*
1309          * Read the RSSI <-> dBm offset information.
1310          */
1311         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1312         rt2x00dev->rssi_offset =
1313             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1314
1315         return 0;
1316 }
1317
1318 /*
1319  * RF value list for RF2522
1320  * Supports: 2.4 GHz
1321  */
1322 static const struct rf_channel rf_vals_bg_2522[] = {
1323         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1324         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1325         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1326         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1327         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1328         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1329         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1330         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1331         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1332         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1333         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1334         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1335         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1336         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1337 };
1338
1339 /*
1340  * RF value list for RF2523
1341  * Supports: 2.4 GHz
1342  */
1343 static const struct rf_channel rf_vals_bg_2523[] = {
1344         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1345         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1346         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1347         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1348         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1349         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1350         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1351         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1352         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1353         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1354         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1355         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1356         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1357         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1358 };
1359
1360 /*
1361  * RF value list for RF2524
1362  * Supports: 2.4 GHz
1363  */
1364 static const struct rf_channel rf_vals_bg_2524[] = {
1365         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1366         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1367         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1368         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1369         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1370         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1371         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1372         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1373         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1374         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1375         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1376         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1377         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1378         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1379 };
1380
1381 /*
1382  * RF value list for RF2525
1383  * Supports: 2.4 GHz
1384  */
1385 static const struct rf_channel rf_vals_bg_2525[] = {
1386         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1387         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1388         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1389         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1390         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1391         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1392         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1393         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1394         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1395         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1396         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1397         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1398         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1399         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1400 };
1401
1402 /*
1403  * RF value list for RF2525e
1404  * Supports: 2.4 GHz
1405  */
1406 static const struct rf_channel rf_vals_bg_2525e[] = {
1407         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1408         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1409         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1410         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1411         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1412         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1413         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1414         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1415         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1416         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1417         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1418         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1419         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1420         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1421 };
1422
1423 /*
1424  * RF value list for RF5222
1425  * Supports: 2.4 GHz & 5.2 GHz
1426  */
1427 static const struct rf_channel rf_vals_5222[] = {
1428         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1429         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1430         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1431         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1432         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1433         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1434         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1435         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1436         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1437         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1438         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1439         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1440         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1441         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1442
1443         /* 802.11 UNI / HyperLan 2 */
1444         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1445         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1446         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1447         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1448         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1449         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1450         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1451         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1452
1453         /* 802.11 HyperLan 2 */
1454         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1455         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1456         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1457         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1458         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1459         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1460         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1461         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1462         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1463         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1464
1465         /* 802.11 UNII */
1466         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1467         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1468         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1469         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1470         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1471 };
1472
1473 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1474 {
1475         struct hw_mode_spec *spec = &rt2x00dev->spec;
1476         u8 *txpower;
1477         unsigned int i;
1478
1479         /*
1480          * Initialize all hw fields.
1481          */
1482         rt2x00dev->hw->flags =
1483             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1484             IEEE80211_HW_RX_INCLUDES_FCS |
1485             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1486         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1487         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1488         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1489         rt2x00dev->hw->queues = 2;
1490
1491         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1492         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1493                                 rt2x00_eeprom_addr(rt2x00dev,
1494                                                    EEPROM_MAC_ADDR_0));
1495
1496         /*
1497          * Convert tx_power array in eeprom.
1498          */
1499         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1500         for (i = 0; i < 14; i++)
1501                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1502
1503         /*
1504          * Initialize hw_mode information.
1505          */
1506         spec->num_modes = 2;
1507         spec->num_rates = 12;
1508         spec->tx_power_a = NULL;
1509         spec->tx_power_bg = txpower;
1510         spec->tx_power_default = DEFAULT_TXPOWER;
1511
1512         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1513                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1514                 spec->channels = rf_vals_bg_2522;
1515         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1516                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1517                 spec->channels = rf_vals_bg_2523;
1518         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1519                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1520                 spec->channels = rf_vals_bg_2524;
1521         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1522                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1523                 spec->channels = rf_vals_bg_2525;
1524         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1525                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1526                 spec->channels = rf_vals_bg_2525e;
1527         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1528                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1529                 spec->channels = rf_vals_5222;
1530                 spec->num_modes = 3;
1531         }
1532 }
1533
1534 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1535 {
1536         int retval;
1537
1538         /*
1539          * Allocate eeprom data.
1540          */
1541         retval = rt2500usb_validate_eeprom(rt2x00dev);
1542         if (retval)
1543                 return retval;
1544
1545         retval = rt2500usb_init_eeprom(rt2x00dev);
1546         if (retval)
1547                 return retval;
1548
1549         /*
1550          * Initialize hw specifications.
1551          */
1552         rt2500usb_probe_hw_mode(rt2x00dev);
1553
1554         /*
1555          * This device requires the beacon ring
1556          */
1557         __set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
1558
1559         /*
1560          * Set the rssi offset.
1561          */
1562         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1563
1564         return 0;
1565 }
1566
1567 /*
1568  * IEEE80211 stack callback functions.
1569  */
1570 static void rt2500usb_configure_filter(struct ieee80211_hw *hw,
1571                                        unsigned int changed_flags,
1572                                        unsigned int *total_flags,
1573                                        int mc_count,
1574                                        struct dev_addr_list *mc_list)
1575 {
1576         struct rt2x00_dev *rt2x00dev = hw->priv;
1577         struct interface *intf = &rt2x00dev->interface;
1578         u16 reg;
1579
1580         /*
1581          * Mask off any flags we are going to ignore from
1582          * the total_flags field.
1583          */
1584         *total_flags &=
1585             FIF_ALLMULTI |
1586             FIF_FCSFAIL |
1587             FIF_PLCPFAIL |
1588             FIF_CONTROL |
1589             FIF_OTHER_BSS |
1590             FIF_PROMISC_IN_BSS;
1591
1592         /*
1593          * Apply some rules to the filters:
1594          * - Some filters imply different filters to be set.
1595          * - Some things we can't filter out at all.
1596          * - Some filters are set based on interface type.
1597          */
1598         if (mc_count)
1599                 *total_flags |= FIF_ALLMULTI;
1600         if (*total_flags & FIF_OTHER_BSS ||
1601             *total_flags & FIF_PROMISC_IN_BSS)
1602                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1603         if (is_interface_type(intf, IEEE80211_IF_TYPE_AP))
1604                 *total_flags |= FIF_PROMISC_IN_BSS;
1605
1606         /*
1607          * Check if there is any work left for us.
1608          */
1609         if (intf->filter == *total_flags)
1610                 return;
1611         intf->filter = *total_flags;
1612
1613         /*
1614          * When in atomic context, reschedule and let rt2x00lib
1615          * call this function again.
1616          */
1617         if (in_atomic()) {
1618                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1619                 return;
1620         }
1621
1622         /*
1623          * Start configuration steps.
1624          * Note that the version error will always be dropped
1625          * and broadcast frames will always be accepted since
1626          * there is no filter for it at this time.
1627          */
1628         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
1629         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
1630                            !(*total_flags & FIF_FCSFAIL));
1631         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
1632                            !(*total_flags & FIF_PLCPFAIL));
1633         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
1634                            !(*total_flags & FIF_CONTROL));
1635         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
1636                            !(*total_flags & FIF_PROMISC_IN_BSS));
1637         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
1638                            !(*total_flags & FIF_PROMISC_IN_BSS));
1639         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
1640         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
1641                            !(*total_flags & FIF_ALLMULTI));
1642         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
1643         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
1644 }
1645
1646 static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
1647                                    struct sk_buff *skb,
1648                                    struct ieee80211_tx_control *control)
1649 {
1650         struct rt2x00_dev *rt2x00dev = hw->priv;
1651         struct usb_device *usb_dev =
1652             interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
1653         struct data_ring *ring =
1654             rt2x00lib_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1655         struct data_entry *beacon;
1656         struct data_entry *guardian;
1657         int pipe = usb_sndbulkpipe(usb_dev, 1);
1658         int length;
1659
1660         /*
1661          * Just in case the ieee80211 doesn't set this,
1662          * but we need this queue set for the descriptor
1663          * initialization.
1664          */
1665         control->queue = IEEE80211_TX_QUEUE_BEACON;
1666
1667         /*
1668          * Obtain 2 entries, one for the guardian byte,
1669          * the second for the actual beacon.
1670          */
1671         guardian = rt2x00_get_data_entry(ring);
1672         rt2x00_ring_index_inc(ring);
1673         beacon = rt2x00_get_data_entry(ring);
1674
1675         /*
1676          * First we create the beacon.
1677          */
1678         skb_push(skb, ring->desc_size);
1679         memset(skb->data, 0, ring->desc_size);
1680
1681         rt2x00lib_write_tx_desc(rt2x00dev, (struct data_desc *)skb->data,
1682                                 (struct ieee80211_hdr *)(skb->data +
1683                                                          ring->desc_size),
1684                                 skb->len - ring->desc_size, control);
1685
1686         length = rt2500usb_get_tx_data_len(rt2x00dev, skb);
1687
1688         usb_fill_bulk_urb(beacon->priv, usb_dev, pipe,
1689                           skb->data, length, rt2500usb_beacondone, beacon);
1690
1691         beacon->skb = skb;
1692
1693         /*
1694          * Second we need to create the guardian byte.
1695          * We only need a single byte, so lets recycle
1696          * the 'flags' field we are not using for beacons.
1697          */
1698         guardian->flags = 0;
1699         usb_fill_bulk_urb(guardian->priv, usb_dev, pipe,
1700                           &guardian->flags, 1, rt2500usb_beacondone, guardian);
1701
1702         /*
1703          * Send out the guardian byte.
1704          */
1705         usb_submit_urb(guardian->priv, GFP_ATOMIC);
1706
1707         /*
1708          * Enable beacon generation.
1709          */
1710         rt2500usb_kick_tx_queue(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1711
1712         return 0;
1713 }
1714
1715 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1716         .tx                     = rt2x00mac_tx,
1717         .start                  = rt2x00mac_start,
1718         .stop                   = rt2x00mac_stop,
1719         .add_interface          = rt2x00mac_add_interface,
1720         .remove_interface       = rt2x00mac_remove_interface,
1721         .config                 = rt2x00mac_config,
1722         .config_interface       = rt2x00mac_config_interface,
1723         .configure_filter       = rt2500usb_configure_filter,
1724         .get_stats              = rt2x00mac_get_stats,
1725         .erp_ie_changed         = rt2x00mac_erp_ie_changed,
1726         .conf_tx                = rt2x00mac_conf_tx,
1727         .get_tx_stats           = rt2x00mac_get_tx_stats,
1728         .beacon_update          = rt2500usb_beacon_update,
1729 };
1730
1731 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1732         .probe_hw               = rt2500usb_probe_hw,
1733         .initialize             = rt2x00usb_initialize,
1734         .uninitialize           = rt2x00usb_uninitialize,
1735         .set_device_state       = rt2500usb_set_device_state,
1736         .link_stats             = rt2500usb_link_stats,
1737         .reset_tuner            = rt2500usb_reset_tuner,
1738         .link_tuner             = rt2500usb_link_tuner,
1739         .write_tx_desc          = rt2500usb_write_tx_desc,
1740         .write_tx_data          = rt2x00usb_write_tx_data,
1741         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1742         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1743         .fill_rxdone            = rt2500usb_fill_rxdone,
1744         .config_mac_addr        = rt2500usb_config_mac_addr,
1745         .config_bssid           = rt2500usb_config_bssid,
1746         .config_type            = rt2500usb_config_type,
1747         .config_preamble        = rt2500usb_config_preamble,
1748         .config                 = rt2500usb_config,
1749 };
1750
1751 static const struct rt2x00_ops rt2500usb_ops = {
1752         .name           = DRV_NAME,
1753         .rxd_size       = RXD_DESC_SIZE,
1754         .txd_size       = TXD_DESC_SIZE,
1755         .eeprom_size    = EEPROM_SIZE,
1756         .rf_size        = RF_SIZE,
1757         .lib            = &rt2500usb_rt2x00_ops,
1758         .hw             = &rt2500usb_mac80211_ops,
1759 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1760         .debugfs        = &rt2500usb_rt2x00debug,
1761 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1762 };
1763
1764 /*
1765  * rt2500usb module information.
1766  */
1767 static struct usb_device_id rt2500usb_device_table[] = {
1768         /* ASUS */
1769         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1770         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1771         /* Belkin */
1772         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1773         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1774         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1775         /* Cisco Systems */
1776         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1777         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1778         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1779         /* Conceptronic */
1780         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1781         /* D-LINK */
1782         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1783         /* Gigabyte */
1784         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1785         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1786         /* Hercules */
1787         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1788         /* Melco */
1789         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1790         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1791         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1792         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1793
1794         /* MSI */
1795         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1796         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1797         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1798         /* Ralink */
1799         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1800         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1801         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1802         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1803         /* Siemens */
1804         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1805         /* SMC */
1806         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1807         /* Spairon */
1808         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1809         /* Trust */
1810         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1811         /* Zinwell */
1812         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1813         { 0, }
1814 };
1815
1816 MODULE_AUTHOR(DRV_PROJECT);
1817 MODULE_VERSION(DRV_VERSION);
1818 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1819 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1820 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1821 MODULE_LICENSE("GPL");
1822
1823 static struct usb_driver rt2500usb_driver = {
1824         .name           = DRV_NAME,
1825         .id_table       = rt2500usb_device_table,
1826         .probe          = rt2x00usb_probe,
1827         .disconnect     = rt2x00usb_disconnect,
1828         .suspend        = rt2x00usb_suspend,
1829         .resume         = rt2x00usb_resume,
1830 };
1831
1832 static int __init rt2500usb_init(void)
1833 {
1834         return usb_register(&rt2500usb_driver);
1835 }
1836
1837 static void __exit rt2500usb_exit(void)
1838 {
1839         usb_deregister(&rt2500usb_driver);
1840 }
1841
1842 module_init(rt2500usb_init);
1843 module_exit(rt2500usb_exit);