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_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
 521         if (rt2x00dev->led_mode == LED_MODE_TXRX_ACTIVITY) {
 522                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 1);
 523                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 524         } else if (rt2x00dev->led_mode == LED_MODE_ASUS) {
 525                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 526                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 1);
 527         } else {
 528                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 1);
 529                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 1);
 530         }
 531
 532         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 533 }
 534
 535 static void rt2500usb_disable_led(struct rt2x00_dev *rt2x00dev)
 536 {
 537         u16 reg;
 538
 539         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 540         rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 541         rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 542         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 543 }
 544
 545 /*
 546  * Link tuning
 547  */
 548 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
 549                                  struct link_qual *qual)
 550 {
 551         u16 reg;
 552
 553         /*
 554          * Update FCS error count from register.
 555          */
 556         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
 557         qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
 558
 559         /*
 560          * Update False CCA count from register.
 561          */
 562         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
 563         qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
 564 }
 565
 566 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
 567 {
 568         u16 eeprom;
 569         u16 value;
 570
 571         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
 572         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
 573         rt2500usb_bbp_write(rt2x00dev, 24, value);
 574
 575         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
 576         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
 577         rt2500usb_bbp_write(rt2x00dev, 25, value);
 578
 579         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
 580         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
 581         rt2500usb_bbp_write(rt2x00dev, 61, value);
 582
 583         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
 584         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
 585         rt2500usb_bbp_write(rt2x00dev, 17, value);
 586
 587         rt2x00dev->link.vgc_level = value;
 588 }
 589
 590 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
 591 {
 592         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
 593         u16 bbp_thresh;
 594         u16 vgc_bound;
 595         u16 sens;
 596         u16 r24;
 597         u16 r25;
 598         u16 r61;
 599         u16 r17_sens;
 600         u8 r17;
 601         u8 up_bound;
 602         u8 low_bound;
 603
 604         /*
 605          * Determine the BBP tuning threshold and correctly
 606          * set BBP 24, 25 and 61.
 607          */
 608         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
 609         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
 610
 611         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
 612         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
 613         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
 614
 615         if ((rssi + bbp_thresh) > 0) {
 616                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
 617                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
 618                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
 619         } else {
 620                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
 621                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
 622                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
 623         }
 624
 625         rt2500usb_bbp_write(rt2x00dev, 24, r24);
 626         rt2500usb_bbp_write(rt2x00dev, 25, r25);
 627         rt2500usb_bbp_write(rt2x00dev, 61, r61);
 628
 629         /*
 630          * Read current r17 value, as well as the sensitivity values
 631          * for the r17 register.
 632          */
 633         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
 634         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
 635
 636         /*
 637          * A too low RSSI will cause too much false CCA which will
 638          * then corrupt the R17 tuning. To remidy this the tuning should
 639          * be stopped (While making sure the R17 value will not exceed limits)
 640          */
 641         if (rssi >= -40) {
 642                 if (r17 != 0x60)
 643                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
 644                 return;
 645         }
 646
 647         /*
 648          * Special big-R17 for short distance
 649          */
 650         if (rssi >= -58) {
 651                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
 652                 if (r17 != sens)
 653                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 654                 return;
 655         }
 656
 657         /*
 658          * Special mid-R17 for middle distance
 659          */
 660         if (rssi >= -74) {
 661                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
 662                 if (r17 != sens)
 663                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 664                 return;
 665         }
 666
 667         /*
 668          * Leave short or middle distance condition, restore r17
 669          * to the dynamic tuning range.
 670          */
 671         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
 672         vgc_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
 673
 674         low_bound = 0x32;
 675         if (rssi >= -77)
 676                 up_bound = vgc_bound;
 677         else
 678                 up_bound = vgc_bound - (-77 - rssi);
 679
 680         if (up_bound < low_bound)
 681                 up_bound = low_bound;
 682
 683         if (r17 > up_bound) {
 684                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
 685                 rt2x00dev->link.vgc_level = up_bound;
 686         } else if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
 687                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
 688                 rt2x00dev->link.vgc_level = r17;
 689         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
 690                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
 691                 rt2x00dev->link.vgc_level = r17;
 692         }
 693 }
 694
 695 /*
 696  * Initialization functions.
 697  */
 698 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
 699 {
 700         u16 reg;
 701
 702         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
 703                                     USB_MODE_TEST, REGISTER_TIMEOUT);
 704         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
 705                                     0x00f0, REGISTER_TIMEOUT);
 706
 707         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 708         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 709         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 710
 711         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
 712         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
 713
 714         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 715         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
 716         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
 717         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 718         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 719
 720         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 721         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 722         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 723         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 724         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 725
 726         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
 727         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
 728         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
 729         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
 730         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
 731         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
 732
 733         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
 734         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
 735         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
 736         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
 737         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
 738         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
 739
 740         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 741         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
 742         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
 743         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
 744         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
 745         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 746
 747         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 748         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
 749         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
 750         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
 751         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
 752         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 753
 754         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
 755         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
 756
 757         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 758                 return -EBUSY;
 759
 760         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 761         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 762         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 763         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
 764         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 765
 766         if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
 767                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
 768                 reg &= ~0x0002;
 769         } else {
 770                 reg = 0x3002;
 771         }
 772         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
 773
 774         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
 775         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
 776         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
 777         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
 778
 779         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 780         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
 781                            rt2x00dev->rx->data_size);
 782         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
 783
 784         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 785         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 786         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
 787         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 788
 789         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 790         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
 791         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 792
 793         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
 794         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
 795         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
 796
 797         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 798         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
 799         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 800
 801         return 0;
 802 }
 803
 804 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
 805 {
 806         unsigned int i;
 807         u16 eeprom;
 808         u8 value;
 809         u8 reg_id;
 810
 811         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 812                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
 813                 if ((value != 0xff) && (value != 0x00))
 814                         goto continue_csr_init;
 815                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
 816                 udelay(REGISTER_BUSY_DELAY);
 817         }
 818
 819         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
 820         return -EACCES;
 821
 822 continue_csr_init:
 823         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
 824         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
 825         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
 826         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
 827         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
 828         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
 829         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
 830         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
 831         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
 832         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
 833         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
 834         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
 835         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
 836         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
 837         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
 838         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
 839         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
 840         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
 841         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
 842         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
 843         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
 844         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
 845         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
 846         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
 847         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
 848         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
 849         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
 850         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
 851         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
 852         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
 853         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
 854
 855         DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
 856         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 857                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 858
 859                 if (eeprom != 0xffff && eeprom != 0x0000) {
 860                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 861                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 862                         DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
 863                               reg_id, value);
 864                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
 865                 }
 866         }
 867         DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
 868
 869         return 0;
 870 }
 871
 872 /*
 873  * Device state switch handlers.
 874  */
 875 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
 876                                 enum dev_state state)
 877 {
 878         u16 reg;
 879
 880         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 881         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
 882                            state == STATE_RADIO_RX_OFF);
 883         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 884 }
 885
 886 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
 887 {
 888         /*
 889          * Initialize all registers.
 890          */
 891         if (rt2500usb_init_registers(rt2x00dev) ||
 892             rt2500usb_init_bbp(rt2x00dev)) {
 893                 ERROR(rt2x00dev, "Register initialization failed.\n");
 894                 return -EIO;
 895         }
 896
 897         rt2x00usb_enable_radio(rt2x00dev);
 898
 899         /*
 900          * Enable LED
 901          */
 902         rt2500usb_enable_led(rt2x00dev);
 903
 904         return 0;
 905 }
 906
 907 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
 908 {
 909         /*
 910          * Disable LED
 911          */
 912         rt2500usb_disable_led(rt2x00dev);
 913
 914         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
 915         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
 916
 917         /*
 918          * Disable synchronisation.
 919          */
 920         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 921
 922         rt2x00usb_disable_radio(rt2x00dev);
 923 }
 924
 925 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
 926                                enum dev_state state)
 927 {
 928         u16 reg;
 929         u16 reg2;
 930         unsigned int i;
 931         char put_to_sleep;
 932         char bbp_state;
 933         char rf_state;
 934
 935         put_to_sleep = (state != STATE_AWAKE);
 936
 937         reg = 0;
 938         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
 939         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
 940         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
 941         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 942         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
 943         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 944
 945         /*
 946          * Device is not guaranteed to be in the requested state yet.
 947          * We must wait until the register indicates that the
 948          * device has entered the correct state.
 949          */
 950         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 951                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
 952                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
 953                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
 954                 if (bbp_state == state && rf_state == state)
 955                         return 0;
 956                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 957                 msleep(30);
 958         }
 959
 960         NOTICE(rt2x00dev, "Device failed to enter state %d, "
 961                "current device state: bbp %d and rf %d.\n",
 962                state, bbp_state, rf_state);
 963
 964         return -EBUSY;
 965 }
 966
 967 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
 968                                       enum dev_state state)
 969 {
 970         int retval = 0;
 971
 972         switch (state) {
 973         case STATE_RADIO_ON:
 974                 retval = rt2500usb_enable_radio(rt2x00dev);
 975                 break;
 976         case STATE_RADIO_OFF:
 977                 rt2500usb_disable_radio(rt2x00dev);
 978                 break;
 979         case STATE_RADIO_RX_ON:
 980         case STATE_RADIO_RX_OFF:
 981                 rt2500usb_toggle_rx(rt2x00dev, state);
 982                 break;
 983         case STATE_DEEP_SLEEP:
 984         case STATE_SLEEP:
 985         case STATE_STANDBY:
 986         case STATE_AWAKE:
 987                 retval = rt2500usb_set_state(rt2x00dev, state);
 988                 break;
 989         default:
 990                 retval = -ENOTSUPP;
 991                 break;
 992         }
 993
 994         return retval;
 995 }
 996
 997 /*
 998  * TX descriptor initialization
 999  */
1000 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1001                                     struct data_desc *txd,
1002                                     struct txdata_entry_desc *desc,
1003                                     struct ieee80211_hdr *ieee80211hdr,
1004                                     unsigned int length,
1005                                     struct ieee80211_tx_control *control)
1006 {
1007         u32 word;
1008
1009         /*
1010          * Start writing the descriptor words.
1011          */
1012         rt2x00_desc_read(txd, 1, &word);
1013         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1014         rt2x00_set_field32(&word, TXD_W1_AIFS, desc->aifs);
1015         rt2x00_set_field32(&word, TXD_W1_CWMIN, desc->cw_min);
1016         rt2x00_set_field32(&word, TXD_W1_CWMAX, desc->cw_max);
1017         rt2x00_desc_write(txd, 1, word);
1018
1019         rt2x00_desc_read(txd, 2, &word);
1020         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, desc->signal);
1021         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, desc->service);
1022         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, desc->length_low);
1023         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, desc->length_high);
1024         rt2x00_desc_write(txd, 2, word);
1025
1026         rt2x00_desc_read(txd, 0, &word);
1027         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, control->retry_limit);
1028         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1029                            test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
1030         rt2x00_set_field32(&word, TXD_W0_ACK,
1031                            !(control->flags & IEEE80211_TXCTL_NO_ACK));
1032         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1033                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
1034         rt2x00_set_field32(&word, TXD_W0_OFDM,
1035                            test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
1036         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1037                            !!(control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT));
1038         rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
1039         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, length);
1040         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1041         rt2x00_desc_write(txd, 0, word);
1042 }
1043
1044 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1045                                      struct sk_buff *skb)
1046 {
1047         int length;
1048
1049         /*
1050          * The length _must_ be a multiple of 2,
1051          * but it must _not_ be a multiple of the USB packet size.
1052          */
1053         length = roundup(skb->len, 2);
1054         length += (2 * !(length % rt2x00dev->usb_maxpacket));
1055
1056         return length;
1057 }
1058
1059 /*
1060  * TX data initialization
1061  */
1062 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1063                                     unsigned int queue)
1064 {
1065         u16 reg;
1066
1067         if (queue != IEEE80211_TX_QUEUE_BEACON)
1068                 return;
1069
1070         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1071         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1072                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1073                 /*
1074                  * Beacon generation will fail initially.
1075                  * To prevent this we need to register the TXRX_CSR19
1076                  * register several times.
1077                  */
1078                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1079                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1080                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1081                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1082                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1083         }
1084 }
1085
1086 /*
1087  * RX control handlers
1088  */
1089 static void rt2500usb_fill_rxdone(struct data_entry *entry,
1090                                   struct rxdata_entry_desc *desc)
1091 {
1092         struct urb *urb = entry->priv;
1093         struct data_desc *rxd = (struct data_desc *)(entry->skb->data +
1094                                                      (urb->actual_length -
1095                                                       entry->ring->desc_size));
1096         u32 word0;
1097         u32 word1;
1098
1099         rt2x00_desc_read(rxd, 0, &word0);
1100         rt2x00_desc_read(rxd, 1, &word1);
1101
1102         desc->flags = 0;
1103         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1104                 desc->flags |= RX_FLAG_FAILED_FCS_CRC;
1105         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1106                 desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1107
1108         /*
1109          * Obtain the status about this packet.
1110          */
1111         desc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1112         desc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1113             entry->ring->rt2x00dev->rssi_offset;
1114         desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1115         desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1116
1117         return;
1118 }
1119
1120 /*
1121  * Interrupt functions.
1122  */
1123 static void rt2500usb_beacondone(struct urb *urb)
1124 {
1125         struct data_entry *entry = (struct data_entry *)urb->context;
1126         struct data_ring *ring = entry->ring;
1127
1128         if (!test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags))
1129                 return;
1130
1131         /*
1132          * Check if this was the guardian beacon,
1133          * if that was the case we need to send the real beacon now.
1134          * Otherwise we should free the sk_buffer, the device
1135          * should be doing the rest of the work now.
1136          */
1137         if (ring->index == 1) {
1138                 rt2x00_ring_index_done_inc(ring);
1139                 entry = rt2x00_get_data_entry(ring);
1140                 usb_submit_urb(entry->priv, GFP_ATOMIC);
1141                 rt2x00_ring_index_inc(ring);
1142         } else if (ring->index_done == 1) {
1143                 entry = rt2x00_get_data_entry_done(ring);
1144                 if (entry->skb) {
1145                         dev_kfree_skb(entry->skb);
1146                         entry->skb = NULL;
1147                 }
1148                 rt2x00_ring_index_done_inc(ring);
1149         }
1150 }
1151
1152 /*
1153  * Device probe functions.
1154  */
1155 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1156 {
1157         u16 word;
1158         u8 *mac;
1159
1160         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1161
1162         /*
1163          * Start validation of the data that has been read.
1164          */
1165         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1166         if (!is_valid_ether_addr(mac)) {
1167                 DECLARE_MAC_BUF(macbuf);
1168
1169                 random_ether_addr(mac);
1170                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1171         }
1172
1173         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1174         if (word == 0xffff) {
1175                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1176                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1177                                    ANTENNA_SW_DIVERSITY);
1178                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1179                                    ANTENNA_SW_DIVERSITY);
1180                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1181                                    LED_MODE_DEFAULT);
1182                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1183                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1184                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1185                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1186                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1187         }
1188
1189         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1190         if (word == 0xffff) {
1191                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1192                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1193                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1194                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1195                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1196         }
1197
1198         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1199         if (word == 0xffff) {
1200                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1201                                    DEFAULT_RSSI_OFFSET);
1202                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1203                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1204         }
1205
1206         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1207         if (word == 0xffff) {
1208                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1209                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1210                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1211         }
1212
1213         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1214         if (word == 0xffff) {
1215                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1216                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1217                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1218         }
1219
1220         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1221         if (word == 0xffff) {
1222                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1223                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1224                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1225                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1226         }
1227
1228         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1229         if (word == 0xffff) {
1230                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1231                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1232                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1233                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1234         }
1235
1236         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1237         if (word == 0xffff) {
1238                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1239                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1240                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1241                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1242         }
1243
1244         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1245         if (word == 0xffff) {
1246                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1247                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1248                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1249                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1250         }
1251
1252         return 0;
1253 }
1254
1255 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1256 {
1257         u16 reg;
1258         u16 value;
1259         u16 eeprom;
1260
1261         /*
1262          * Read EEPROM word for configuration.
1263          */
1264         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1265
1266         /*
1267          * Identify RF chipset.
1268          */
1269         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1270         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1271         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1272
1273         if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
1274                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1275                 return -ENODEV;
1276         }
1277
1278         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1279             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1280             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1281             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1282             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1283             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1284                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1285                 return -ENODEV;
1286         }
1287
1288         /*
1289          * Identify default antenna configuration.
1290          */
1291         rt2x00dev->default_ant.tx =
1292             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1293         rt2x00dev->default_ant.rx =
1294             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1295
1296         /*
1297          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1298          * I am not 100% sure about this, but the legacy drivers do not
1299          * indicate antenna swapping in software is required when
1300          * diversity is enabled.
1301          */
1302         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1303                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1304         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1305                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1306
1307         /*
1308          * Store led mode, for correct led behaviour.
1309          */
1310         rt2x00dev->led_mode =
1311             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1312
1313         /*
1314          * Check if the BBP tuning should be disabled.
1315          */
1316         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1317         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1318                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1319
1320         /*
1321          * Read the RSSI <-> dBm offset information.
1322          */
1323         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1324         rt2x00dev->rssi_offset =
1325             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1326
1327         return 0;
1328 }
1329
1330 /*
1331  * RF value list for RF2522
1332  * Supports: 2.4 GHz
1333  */
1334 static const struct rf_channel rf_vals_bg_2522[] = {
1335         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1336         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1337         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1338         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1339         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1340         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1341         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1342         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1343         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1344         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1345         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1346         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1347         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1348         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1349 };
1350
1351 /*
1352  * RF value list for RF2523
1353  * Supports: 2.4 GHz
1354  */
1355 static const struct rf_channel rf_vals_bg_2523[] = {
1356         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1357         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1358         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1359         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1360         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1361         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1362         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1363         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1364         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1365         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1366         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1367         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1368         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1369         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1370 };
1371
1372 /*
1373  * RF value list for RF2524
1374  * Supports: 2.4 GHz
1375  */
1376 static const struct rf_channel rf_vals_bg_2524[] = {
1377         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1378         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1379         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1380         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1381         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1382         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1383         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1384         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1385         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1386         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1387         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1388         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1389         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1390         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1391 };
1392
1393 /*
1394  * RF value list for RF2525
1395  * Supports: 2.4 GHz
1396  */
1397 static const struct rf_channel rf_vals_bg_2525[] = {
1398         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1399         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1400         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1401         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1402         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1403         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1404         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1405         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1406         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1407         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1408         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1409         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1410         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1411         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1412 };
1413
1414 /*
1415  * RF value list for RF2525e
1416  * Supports: 2.4 GHz
1417  */
1418 static const struct rf_channel rf_vals_bg_2525e[] = {
1419         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1420         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1421         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1422         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1423         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1424         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1425         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1426         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1427         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1428         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1429         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1430         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1431         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1432         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1433 };
1434
1435 /*
1436  * RF value list for RF5222
1437  * Supports: 2.4 GHz & 5.2 GHz
1438  */
1439 static const struct rf_channel rf_vals_5222[] = {
1440         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1441         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1442         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1443         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1444         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1445         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1446         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1447         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1448         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1449         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1450         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1451         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1452         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1453         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1454
1455         /* 802.11 UNI / HyperLan 2 */
1456         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1457         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1458         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1459         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1460         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1461         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1462         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1463         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1464
1465         /* 802.11 HyperLan 2 */
1466         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1467         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1468         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1469         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1470         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1471         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1472         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1473         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1474         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1475         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1476
1477         /* 802.11 UNII */
1478         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1479         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1480         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1481         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1482         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1483 };
1484
1485 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1486 {
1487         struct hw_mode_spec *spec = &rt2x00dev->spec;
1488         u8 *txpower;
1489         unsigned int i;
1490
1491         /*
1492          * Initialize all hw fields.
1493          */
1494         rt2x00dev->hw->flags =
1495             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1496             IEEE80211_HW_RX_INCLUDES_FCS |
1497             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1498         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1499         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1500         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1501         rt2x00dev->hw->queues = 2;
1502
1503         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1504         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1505                                 rt2x00_eeprom_addr(rt2x00dev,
1506                                                    EEPROM_MAC_ADDR_0));
1507
1508         /*
1509          * Convert tx_power array in eeprom.
1510          */
1511         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1512         for (i = 0; i < 14; i++)
1513                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1514
1515         /*
1516          * Initialize hw_mode information.
1517          */
1518         spec->num_modes = 2;
1519         spec->num_rates = 12;
1520         spec->tx_power_a = NULL;
1521         spec->tx_power_bg = txpower;
1522         spec->tx_power_default = DEFAULT_TXPOWER;
1523
1524         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1525                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1526                 spec->channels = rf_vals_bg_2522;
1527         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1528                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1529                 spec->channels = rf_vals_bg_2523;
1530         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1531                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1532                 spec->channels = rf_vals_bg_2524;
1533         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1534                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1535                 spec->channels = rf_vals_bg_2525;
1536         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1537                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1538                 spec->channels = rf_vals_bg_2525e;
1539         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1540                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1541                 spec->channels = rf_vals_5222;
1542                 spec->num_modes = 3;
1543         }
1544 }
1545
1546 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1547 {
1548         int retval;
1549
1550         /*
1551          * Allocate eeprom data.
1552          */
1553         retval = rt2500usb_validate_eeprom(rt2x00dev);
1554         if (retval)
1555                 return retval;
1556
1557         retval = rt2500usb_init_eeprom(rt2x00dev);
1558         if (retval)
1559                 return retval;
1560
1561         /*
1562          * Initialize hw specifications.
1563          */
1564         rt2500usb_probe_hw_mode(rt2x00dev);
1565
1566         /*
1567          * This device requires the beacon ring
1568          */
1569         __set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
1570
1571         /*
1572          * Set the rssi offset.
1573          */
1574         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1575
1576         return 0;
1577 }
1578
1579 /*
1580  * IEEE80211 stack callback functions.
1581  */
1582 static void rt2500usb_configure_filter(struct ieee80211_hw *hw,
1583                                        unsigned int changed_flags,
1584                                        unsigned int *total_flags,
1585                                        int mc_count,
1586                                        struct dev_addr_list *mc_list)
1587 {
1588         struct rt2x00_dev *rt2x00dev = hw->priv;
1589         struct interface *intf = &rt2x00dev->interface;
1590         u16 reg;
1591
1592         /*
1593          * Mask off any flags we are going to ignore from
1594          * the total_flags field.
1595          */
1596         *total_flags &=
1597             FIF_ALLMULTI |
1598             FIF_FCSFAIL |
1599             FIF_PLCPFAIL |
1600             FIF_CONTROL |
1601             FIF_OTHER_BSS |
1602             FIF_PROMISC_IN_BSS;
1603
1604         /*
1605          * Apply some rules to the filters:
1606          * - Some filters imply different filters to be set.
1607          * - Some things we can't filter out at all.
1608          * - Some filters are set based on interface type.
1609          */
1610         if (mc_count)
1611                 *total_flags |= FIF_ALLMULTI;
1612         if (*total_flags & FIF_OTHER_BSS ||
1613             *total_flags & FIF_PROMISC_IN_BSS)
1614                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1615         if (is_interface_type(intf, IEEE80211_IF_TYPE_AP))
1616                 *total_flags |= FIF_PROMISC_IN_BSS;
1617
1618         /*
1619          * Check if there is any work left for us.
1620          */
1621         if (intf->filter == *total_flags)
1622                 return;
1623         intf->filter = *total_flags;
1624
1625         /*
1626          * When in atomic context, reschedule and let rt2x00lib
1627          * call this function again.
1628          */
1629         if (in_atomic()) {
1630                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1631                 return;
1632         }
1633
1634         /*
1635          * Start configuration steps.
1636          * Note that the version error will always be dropped
1637          * and broadcast frames will always be accepted since
1638          * there is no filter for it at this time.
1639          */
1640         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
1641         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
1642                            !(*total_flags & FIF_FCSFAIL));
1643         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
1644                            !(*total_flags & FIF_PLCPFAIL));
1645         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
1646                            !(*total_flags & FIF_CONTROL));
1647         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
1648                            !(*total_flags & FIF_PROMISC_IN_BSS));
1649         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
1650                            !(*total_flags & FIF_PROMISC_IN_BSS));
1651         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
1652         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
1653                            !(*total_flags & FIF_ALLMULTI));
1654         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
1655         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
1656 }
1657
1658 static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
1659                                    struct sk_buff *skb,
1660                                    struct ieee80211_tx_control *control)
1661 {
1662         struct rt2x00_dev *rt2x00dev = hw->priv;
1663         struct usb_device *usb_dev =
1664             interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
1665         struct data_ring *ring =
1666             rt2x00lib_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1667         struct data_entry *beacon;
1668         struct data_entry *guardian;
1669         int pipe = usb_sndbulkpipe(usb_dev, 1);
1670         int length;
1671
1672         /*
1673          * Just in case the ieee80211 doesn't set this,
1674          * but we need this queue set for the descriptor
1675          * initialization.
1676          */
1677         control->queue = IEEE80211_TX_QUEUE_BEACON;
1678
1679         /*
1680          * Obtain 2 entries, one for the guardian byte,
1681          * the second for the actual beacon.
1682          */
1683         guardian = rt2x00_get_data_entry(ring);
1684         rt2x00_ring_index_inc(ring);
1685         beacon = rt2x00_get_data_entry(ring);
1686
1687         /*
1688          * First we create the beacon.
1689          */
1690         skb_push(skb, ring->desc_size);
1691         memset(skb->data, 0, ring->desc_size);
1692
1693         rt2x00lib_write_tx_desc(rt2x00dev, (struct data_desc *)skb->data,
1694                                 (struct ieee80211_hdr *)(skb->data +
1695                                                          ring->desc_size),
1696                                 skb->len - ring->desc_size, control);
1697
1698         length = rt2500usb_get_tx_data_len(rt2x00dev, skb);
1699
1700         usb_fill_bulk_urb(beacon->priv, usb_dev, pipe,
1701                           skb->data, length, rt2500usb_beacondone, beacon);
1702
1703         beacon->skb = skb;
1704
1705         /*
1706          * Second we need to create the guardian byte.
1707          * We only need a single byte, so lets recycle
1708          * the 'flags' field we are not using for beacons.
1709          */
1710         guardian->flags = 0;
1711         usb_fill_bulk_urb(guardian->priv, usb_dev, pipe,
1712                           &guardian->flags, 1, rt2500usb_beacondone, guardian);
1713
1714         /*
1715          * Send out the guardian byte.
1716          */
1717         usb_submit_urb(guardian->priv, GFP_ATOMIC);
1718
1719         /*
1720          * Enable beacon generation.
1721          */
1722         rt2500usb_kick_tx_queue(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1723
1724         return 0;
1725 }
1726
1727 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1728         .tx                     = rt2x00mac_tx,
1729         .start                  = rt2x00mac_start,
1730         .stop                   = rt2x00mac_stop,
1731         .add_interface          = rt2x00mac_add_interface,
1732         .remove_interface       = rt2x00mac_remove_interface,
1733         .config                 = rt2x00mac_config,
1734         .config_interface       = rt2x00mac_config_interface,
1735         .configure_filter       = rt2500usb_configure_filter,
1736         .get_stats              = rt2x00mac_get_stats,
1737         .erp_ie_changed         = rt2x00mac_erp_ie_changed,
1738         .conf_tx                = rt2x00mac_conf_tx,
1739         .get_tx_stats           = rt2x00mac_get_tx_stats,
1740         .beacon_update          = rt2500usb_beacon_update,
1741 };
1742
1743 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1744         .probe_hw               = rt2500usb_probe_hw,
1745         .initialize             = rt2x00usb_initialize,
1746         .uninitialize           = rt2x00usb_uninitialize,
1747         .set_device_state       = rt2500usb_set_device_state,
1748         .link_stats             = rt2500usb_link_stats,
1749         .reset_tuner            = rt2500usb_reset_tuner,
1750         .link_tuner             = rt2500usb_link_tuner,
1751         .write_tx_desc          = rt2500usb_write_tx_desc,
1752         .write_tx_data          = rt2x00usb_write_tx_data,
1753         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1754         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1755         .fill_rxdone            = rt2500usb_fill_rxdone,
1756         .config_mac_addr        = rt2500usb_config_mac_addr,
1757         .config_bssid           = rt2500usb_config_bssid,
1758         .config_type            = rt2500usb_config_type,
1759         .config_preamble        = rt2500usb_config_preamble,
1760         .config                 = rt2500usb_config,
1761 };
1762
1763 static const struct rt2x00_ops rt2500usb_ops = {
1764         .name           = DRV_NAME,
1765         .rxd_size       = RXD_DESC_SIZE,
1766         .txd_size       = TXD_DESC_SIZE,
1767         .eeprom_size    = EEPROM_SIZE,
1768         .rf_size        = RF_SIZE,
1769         .lib            = &rt2500usb_rt2x00_ops,
1770         .hw             = &rt2500usb_mac80211_ops,
1771 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1772         .debugfs        = &rt2500usb_rt2x00debug,
1773 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1774 };
1775
1776 /*
1777  * rt2500usb module information.
1778  */
1779 static struct usb_device_id rt2500usb_device_table[] = {
1780         /* ASUS */
1781         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1782         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1783         /* Belkin */
1784         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1785         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1786         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1787         /* Cisco Systems */
1788         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1789         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1790         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1791         /* Conceptronic */
1792         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1793         /* D-LINK */
1794         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1795         /* Gigabyte */
1796         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1797         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1798         /* Hercules */
1799         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1800         /* Melco */
1801         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1802         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1803         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1804         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1805
1806         /* MSI */
1807         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1808         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1809         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1810         /* Ralink */
1811         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1812         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1813         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1814         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1815         /* Siemens */
1816         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1817         /* SMC */
1818         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1819         /* Spairon */
1820         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1821         /* Trust */
1822         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1823         /* Zinwell */
1824         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1825         { 0, }
1826 };
1827
1828 MODULE_AUTHOR(DRV_PROJECT);
1829 MODULE_VERSION(DRV_VERSION);
1830 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1831 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1832 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1833 MODULE_LICENSE("GPL");
1834
1835 static struct usb_driver rt2500usb_driver = {
1836         .name           = DRV_NAME,
1837         .id_table       = rt2500usb_device_table,
1838         .probe          = rt2x00usb_probe,
1839         .disconnect     = rt2x00usb_disconnect,
1840         .suspend        = rt2x00usb_suspend,
1841         .resume         = rt2x00usb_resume,
1842 };
1843
1844 static int __init rt2500usb_init(void)
1845 {
1846         return usb_register(&rt2500usb_driver);
1847 }
1848
1849 static void __exit rt2500usb_exit(void)
1850 {
1851         usb_deregister(&rt2500usb_driver);
1852 }
1853
1854 module_init(rt2500usb_init);
1855 module_exit(rt2500usb_exit);