drivers/net/wireless/rt2x00/rt73usb.c

   1 /*
   2         Copyright (C) 2004 - 2008 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: rt73usb
  23         Abstract: rt73usb device specific routines.
  24         Supported chipsets: rt2571W & rt2671.
  25  */
  26
  27 #include <linux/delay.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/init.h>
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/usb.h>
  33
  34 #include "rt2x00.h"
  35 #include "rt2x00usb.h"
  36 #include "rt73usb.h"
  37
  38 /*
  39  * Register access.
  40  * All access to the CSR registers will go through the methods
  41  * rt73usb_register_read and rt73usb_register_write.
  42  * BBP and RF register require indirect register access,
  43  * and use the CSR registers BBPCSR and RFCSR to achieve this.
  44  * These indirect registers work with busy bits,
  45  * and we will try maximal REGISTER_BUSY_COUNT times to access
  46  * the register while taking a REGISTER_BUSY_DELAY us delay
  47  * between each attampt. When the busy bit is still set at that time,
  48  * the access attempt is considered to have failed,
  49  * and we will print an error.
  50  * The _lock versions must be used if you already hold the usb_cache_mutex
  51  */
  52 static inline void rt73usb_register_read(struct rt2x00_dev *rt2x00dev,
  53                                          const unsigned int offset, u32 *value)
  54 {
  55         __le32 reg;
  56         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  57                                       USB_VENDOR_REQUEST_IN, offset,
  58                                       &reg, sizeof(u32), REGISTER_TIMEOUT);
  59         *value = le32_to_cpu(reg);
  60 }
  61
  62 static inline void rt73usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
  63                                               const unsigned int offset, u32 *value)
  64 {
  65         __le32 reg;
  66         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
  67                                        USB_VENDOR_REQUEST_IN, offset,
  68                                        &reg, sizeof(u32), REGISTER_TIMEOUT);
  69         *value = le32_to_cpu(reg);
  70 }
  71
  72 static inline void rt73usb_register_multiread(struct rt2x00_dev *rt2x00dev,
  73                                               const unsigned int offset,
  74                                               void *value, const u32 length)
  75 {
  76         int timeout = REGISTER_TIMEOUT * (length / sizeof(u32));
  77         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  78                                       USB_VENDOR_REQUEST_IN, offset,
  79                                       value, length, timeout);
  80 }
  81
  82 static inline void rt73usb_register_write(struct rt2x00_dev *rt2x00dev,
  83                                           const unsigned int offset, u32 value)
  84 {
  85         __le32 reg = cpu_to_le32(value);
  86         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
  87                                       USB_VENDOR_REQUEST_OUT, offset,
  88                                       &reg, sizeof(u32), REGISTER_TIMEOUT);
  89 }
  90
  91 static inline void rt73usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
  92                                                const unsigned int offset, u32 value)
  93 {
  94         __le32 reg = cpu_to_le32(value);
  95         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE,
  96                                        USB_VENDOR_REQUEST_OUT, offset,
  97                                       &reg, sizeof(u32), REGISTER_TIMEOUT);
  98 }
  99
 100 static inline void rt73usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
 101                                                const unsigned int offset,
 102                                                void *value, const u32 length)
 103 {
 104         int timeout = REGISTER_TIMEOUT * (length / sizeof(u32));
 105         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
 106                                       USB_VENDOR_REQUEST_OUT, offset,
 107                                       value, length, timeout);
 108 }
 109
 110 static u32 rt73usb_bbp_check(struct rt2x00_dev *rt2x00dev)
 111 {
 112         u32 reg;
 113         unsigned int i;
 114
 115         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 116                 rt73usb_register_read_lock(rt2x00dev, PHY_CSR3, &reg);
 117                 if (!rt2x00_get_field32(reg, PHY_CSR3_BUSY))
 118                         break;
 119                 udelay(REGISTER_BUSY_DELAY);
 120         }
 121
 122         return reg;
 123 }
 124
 125 static void rt73usb_bbp_write(struct rt2x00_dev *rt2x00dev,
 126                               const unsigned int word, const u8 value)
 127 {
 128         u32 reg;
 129
 130         mutex_lock(&rt2x00dev->usb_cache_mutex);
 131
 132         /*
 133          * Wait until the BBP becomes ready.
 134          */
 135         reg = rt73usb_bbp_check(rt2x00dev);
 136         if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) {
 137                 ERROR(rt2x00dev, "PHY_CSR3 register busy. Write failed.\n");
 138                 mutex_unlock(&rt2x00dev->usb_cache_mutex);
 139                 return;
 140         }
 141
 142         /*
 143          * Write the data into the BBP.
 144          */
 145         reg = 0;
 146         rt2x00_set_field32(&reg, PHY_CSR3_VALUE, value);
 147         rt2x00_set_field32(&reg, PHY_CSR3_REGNUM, word);
 148         rt2x00_set_field32(&reg, PHY_CSR3_BUSY, 1);
 149         rt2x00_set_field32(&reg, PHY_CSR3_READ_CONTROL, 0);
 150
 151         rt73usb_register_write_lock(rt2x00dev, PHY_CSR3, reg);
 152         mutex_unlock(&rt2x00dev->usb_cache_mutex);
 153 }
 154
 155 static void rt73usb_bbp_read(struct rt2x00_dev *rt2x00dev,
 156                              const unsigned int word, u8 *value)
 157 {
 158         u32 reg;
 159
 160         mutex_lock(&rt2x00dev->usb_cache_mutex);
 161
 162         /*
 163          * Wait until the BBP becomes ready.
 164          */
 165         reg = rt73usb_bbp_check(rt2x00dev);
 166         if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) {
 167                 ERROR(rt2x00dev, "PHY_CSR3 register busy. Read failed.\n");
 168                 mutex_unlock(&rt2x00dev->usb_cache_mutex);
 169                 return;
 170         }
 171
 172         /*
 173          * Write the request into the BBP.
 174          */
 175         reg = 0;
 176         rt2x00_set_field32(&reg, PHY_CSR3_REGNUM, word);
 177         rt2x00_set_field32(&reg, PHY_CSR3_BUSY, 1);
 178         rt2x00_set_field32(&reg, PHY_CSR3_READ_CONTROL, 1);
 179
 180         rt73usb_register_write_lock(rt2x00dev, PHY_CSR3, reg);
 181
 182         /*
 183          * Wait until the BBP becomes ready.
 184          */
 185         reg = rt73usb_bbp_check(rt2x00dev);
 186         if (rt2x00_get_field32(reg, PHY_CSR3_BUSY)) {
 187                 ERROR(rt2x00dev, "PHY_CSR3 register busy. Read failed.\n");
 188                 *value = 0xff;
 189                 return;
 190         }
 191
 192         *value = rt2x00_get_field32(reg, PHY_CSR3_VALUE);
 193         mutex_unlock(&rt2x00dev->usb_cache_mutex);
 194 }
 195
 196 static void rt73usb_rf_write(struct rt2x00_dev *rt2x00dev,
 197                              const unsigned int word, const u32 value)
 198 {
 199         u32 reg;
 200         unsigned int i;
 201
 202         if (!word)
 203                 return;
 204
 205         mutex_lock(&rt2x00dev->usb_cache_mutex);
 206
 207         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 208                 rt73usb_register_read_lock(rt2x00dev, PHY_CSR4, &reg);
 209                 if (!rt2x00_get_field32(reg, PHY_CSR4_BUSY))
 210                         goto rf_write;
 211                 udelay(REGISTER_BUSY_DELAY);
 212         }
 213
 214         mutex_unlock(&rt2x00dev->usb_cache_mutex);
 215         ERROR(rt2x00dev, "PHY_CSR4 register busy. Write failed.\n");
 216         return;
 217
 218 rf_write:
 219         reg = 0;
 220         rt2x00_set_field32(&reg, PHY_CSR4_VALUE, value);
 221
 222         /*
 223          * RF5225 and RF2527 contain 21 bits per RF register value,
 224          * all others contain 20 bits.
 225          */
 226         rt2x00_set_field32(&reg, PHY_CSR4_NUMBER_OF_BITS,
 227                            20 + (rt2x00_rf(&rt2x00dev->chip, RF5225) ||
 228                                  rt2x00_rf(&rt2x00dev->chip, RF2527)));
 229         rt2x00_set_field32(&reg, PHY_CSR4_IF_SELECT, 0);
 230         rt2x00_set_field32(&reg, PHY_CSR4_BUSY, 1);
 231
 232         rt73usb_register_write_lock(rt2x00dev, PHY_CSR4, reg);
 233         rt2x00_rf_write(rt2x00dev, word, value);
 234         mutex_unlock(&rt2x00dev->usb_cache_mutex);
 235 }
 236
 237 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 238 #define CSR_OFFSET(__word)      ( CSR_REG_BASE + ((__word) * sizeof(u32)) )
 239
 240 static void rt73usb_read_csr(struct rt2x00_dev *rt2x00dev,
 241                              const unsigned int word, u32 *data)
 242 {
 243         rt73usb_register_read(rt2x00dev, CSR_OFFSET(word), data);
 244 }
 245
 246 static void rt73usb_write_csr(struct rt2x00_dev *rt2x00dev,
 247                               const unsigned int word, u32 data)
 248 {
 249         rt73usb_register_write(rt2x00dev, CSR_OFFSET(word), data);
 250 }
 251
 252 static const struct rt2x00debug rt73usb_rt2x00debug = {
 253         .owner  = THIS_MODULE,
 254         .csr    = {
 255                 .read           = rt73usb_read_csr,
 256                 .write          = rt73usb_write_csr,
 257                 .word_size      = sizeof(u32),
 258                 .word_count     = CSR_REG_SIZE / sizeof(u32),
 259         },
 260         .eeprom = {
 261                 .read           = rt2x00_eeprom_read,
 262                 .write          = rt2x00_eeprom_write,
 263                 .word_size      = sizeof(u16),
 264                 .word_count     = EEPROM_SIZE / sizeof(u16),
 265         },
 266         .bbp    = {
 267                 .read           = rt73usb_bbp_read,
 268                 .write          = rt73usb_bbp_write,
 269                 .word_size      = sizeof(u8),
 270                 .word_count     = BBP_SIZE / sizeof(u8),
 271         },
 272         .rf     = {
 273                 .read           = rt2x00_rf_read,
 274                 .write          = rt73usb_rf_write,
 275                 .word_size      = sizeof(u32),
 276                 .word_count     = RF_SIZE / sizeof(u32),
 277         },
 278 };
 279 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 280
 281 #ifdef CONFIG_RT73USB_LEDS
 282 static void rt73usb_led_brightness(struct led_classdev *led_cdev,
 283                                    enum led_brightness brightness)
 284 {
 285         struct rt2x00_led *led =
 286            container_of(led_cdev, struct rt2x00_led, led_dev);
 287         unsigned int enabled = brightness != LED_OFF;
 288         unsigned int a_mode =
 289             (enabled && led->rt2x00dev->curr_band == IEEE80211_BAND_5GHZ);
 290         unsigned int bg_mode =
 291             (enabled && led->rt2x00dev->curr_band == IEEE80211_BAND_2GHZ);
 292
 293         if (in_atomic()) {
 294                 NOTICE(led->rt2x00dev,
 295                        "Ignoring LED brightness command for led %d", led->type);
 296                 return;
 297         }
 298
 299         if (led->type == LED_TYPE_RADIO) {
 300                 rt2x00_set_field16(&led->rt2x00dev->led_mcu_reg,
 301                                    MCU_LEDCS_RADIO_STATUS, enabled);
 302
 303                 rt2x00usb_vendor_request_sw(led->rt2x00dev, USB_LED_CONTROL,
 304                                             0, led->rt2x00dev->led_mcu_reg,
 305                                             REGISTER_TIMEOUT);
 306         } else if (led->type == LED_TYPE_ASSOC) {
 307                 rt2x00_set_field16(&led->rt2x00dev->led_mcu_reg,
 308                                    MCU_LEDCS_LINK_BG_STATUS, bg_mode);
 309                 rt2x00_set_field16(&led->rt2x00dev->led_mcu_reg,
 310                                    MCU_LEDCS_LINK_A_STATUS, a_mode);
 311
 312                 rt2x00usb_vendor_request_sw(led->rt2x00dev, USB_LED_CONTROL,
 313                                             0, led->rt2x00dev->led_mcu_reg,
 314                                             REGISTER_TIMEOUT);
 315         } else if (led->type == LED_TYPE_QUALITY) {
 316                 /*
 317                  * The brightness is divided into 6 levels (0 - 5),
 318                  * this means we need to convert the brightness
 319                  * argument into the matching level within that range.
 320                  */
 321                 rt2x00usb_vendor_request_sw(led->rt2x00dev, USB_LED_CONTROL,
 322                                             brightness / (LED_FULL / 6),
 323                                             led->rt2x00dev->led_mcu_reg,
 324                                             REGISTER_TIMEOUT);
 325         }
 326 }
 327 #else
 328 #define rt73usb_led_brightness  NULL
 329 #endif /* CONFIG_RT73USB_LEDS */
 330
 331 /*
 332  * Configuration handlers.
 333  */
 334 static void rt73usb_config_intf(struct rt2x00_dev *rt2x00dev,
 335                                 struct rt2x00_intf *intf,
 336                                 struct rt2x00intf_conf *conf,
 337                                 const unsigned int flags)
 338 {
 339         unsigned int beacon_base;
 340         u32 reg;
 341
 342         if (flags & CONFIG_UPDATE_TYPE) {
 343                 /*
 344                  * Clear current synchronisation setup.
 345                  * For the Beacon base registers we only need to clear
 346                  * the first byte since that byte contains the VALID and OWNER
 347                  * bits which (when set to 0) will invalidate the entire beacon.
 348                  */
 349                 beacon_base = HW_BEACON_OFFSET(intf->beacon->entry_idx);
 350                 rt73usb_register_write(rt2x00dev, TXRX_CSR9, 0);
 351                 rt73usb_register_write(rt2x00dev, beacon_base, 0);
 352
 353                 /*
 354                  * Enable synchronisation.
 355                  */
 356                 rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
 357                 rt2x00_set_field32(&reg, TXRX_CSR9_TSF_TICKING, 1);
 358                 rt2x00_set_field32(&reg, TXRX_CSR9_TBTT_ENABLE,
 359                                   (conf->sync == TSF_SYNC_BEACON));
 360                 rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 0);
 361                 rt2x00_set_field32(&reg, TXRX_CSR9_TSF_SYNC, conf->sync);
 362                 rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
 363         }
 364
 365         if (flags & CONFIG_UPDATE_MAC) {
 366                 reg = le32_to_cpu(conf->mac[1]);
 367                 rt2x00_set_field32(&reg, MAC_CSR3_UNICAST_TO_ME_MASK, 0xff);
 368                 conf->mac[1] = cpu_to_le32(reg);
 369
 370                 rt73usb_register_multiwrite(rt2x00dev, MAC_CSR2,
 371                                             conf->mac, sizeof(conf->mac));
 372         }
 373
 374         if (flags & CONFIG_UPDATE_BSSID) {
 375                 reg = le32_to_cpu(conf->bssid[1]);
 376                 rt2x00_set_field32(&reg, MAC_CSR5_BSS_ID_MASK, 3);
 377                 conf->bssid[1] = cpu_to_le32(reg);
 378
 379                 rt73usb_register_multiwrite(rt2x00dev, MAC_CSR4,
 380                                             conf->bssid, sizeof(conf->bssid));
 381         }
 382 }
 383
 384 static int rt73usb_config_preamble(struct rt2x00_dev *rt2x00dev,
 385                                    const int short_preamble,
 386                                    const int ack_timeout,
 387                                    const int ack_consume_time)
 388 {
 389         u32 reg;
 390
 391         /*
 392          * When in atomic context, we should let rt2x00lib
 393          * try this configuration again later.
 394          */
 395         if (in_atomic())
 396                 return -EAGAIN;
 397
 398         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 399         rt2x00_set_field32(&reg, TXRX_CSR0_RX_ACK_TIMEOUT, ack_timeout);
 400         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 401
 402         rt73usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
 403         rt2x00_set_field32(&reg, TXRX_CSR4_AUTORESPOND_PREAMBLE,
 404                            !!short_preamble);
 405         rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
 406
 407         return 0;
 408 }
 409
 410 static void rt73usb_config_phymode(struct rt2x00_dev *rt2x00dev,
 411                                    const int basic_rate_mask)
 412 {
 413         rt73usb_register_write(rt2x00dev, TXRX_CSR5, basic_rate_mask);
 414 }
 415
 416 static void rt73usb_config_channel(struct rt2x00_dev *rt2x00dev,
 417                                    struct rf_channel *rf, const int txpower)
 418 {
 419         u8 r3;
 420         u8 r94;
 421         u8 smart;
 422
 423         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 424         rt2x00_set_field32(&rf->rf4, RF4_FREQ_OFFSET, rt2x00dev->freq_offset);
 425
 426         smart = !(rt2x00_rf(&rt2x00dev->chip, RF5225) ||
 427                   rt2x00_rf(&rt2x00dev->chip, RF2527));
 428
 429         rt73usb_bbp_read(rt2x00dev, 3, &r3);
 430         rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, smart);
 431         rt73usb_bbp_write(rt2x00dev, 3, r3);
 432
 433         r94 = 6;
 434         if (txpower > MAX_TXPOWER && txpower <= (MAX_TXPOWER + r94))
 435                 r94 += txpower - MAX_TXPOWER;
 436         else if (txpower < MIN_TXPOWER && txpower >= (MIN_TXPOWER - r94))
 437                 r94 += txpower;
 438         rt73usb_bbp_write(rt2x00dev, 94, r94);
 439
 440         rt73usb_rf_write(rt2x00dev, 1, rf->rf1);
 441         rt73usb_rf_write(rt2x00dev, 2, rf->rf2);
 442         rt73usb_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004);
 443         rt73usb_rf_write(rt2x00dev, 4, rf->rf4);
 444
 445         rt73usb_rf_write(rt2x00dev, 1, rf->rf1);
 446         rt73usb_rf_write(rt2x00dev, 2, rf->rf2);
 447         rt73usb_rf_write(rt2x00dev, 3, rf->rf3 | 0x00000004);
 448         rt73usb_rf_write(rt2x00dev, 4, rf->rf4);
 449
 450         rt73usb_rf_write(rt2x00dev, 1, rf->rf1);
 451         rt73usb_rf_write(rt2x00dev, 2, rf->rf2);
 452         rt73usb_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004);
 453         rt73usb_rf_write(rt2x00dev, 4, rf->rf4);
 454
 455         udelay(10);
 456 }
 457
 458 static void rt73usb_config_txpower(struct rt2x00_dev *rt2x00dev,
 459                                    const int txpower)
 460 {
 461         struct rf_channel rf;
 462
 463         rt2x00_rf_read(rt2x00dev, 1, &rf.rf1);
 464         rt2x00_rf_read(rt2x00dev, 2, &rf.rf2);
 465         rt2x00_rf_read(rt2x00dev, 3, &rf.rf3);
 466         rt2x00_rf_read(rt2x00dev, 4, &rf.rf4);
 467
 468         rt73usb_config_channel(rt2x00dev, &rf, txpower);
 469 }
 470
 471 static void rt73usb_config_antenna_5x(struct rt2x00_dev *rt2x00dev,
 472                                       struct antenna_setup *ant)
 473 {
 474         u8 r3;
 475         u8 r4;
 476         u8 r77;
 477         u8 temp;
 478
 479         rt73usb_bbp_read(rt2x00dev, 3, &r3);
 480         rt73usb_bbp_read(rt2x00dev, 4, &r4);
 481         rt73usb_bbp_read(rt2x00dev, 77, &r77);
 482
 483         rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, 0);
 484
 485         /*
 486          * Configure the RX antenna.
 487          */
 488         switch (ant->rx) {
 489         case ANTENNA_HW_DIVERSITY:
 490                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 2);
 491                 temp = !test_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags)
 492                        && (rt2x00dev->curr_band != IEEE80211_BAND_5GHZ);
 493                 rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, temp);
 494                 break;
 495         case ANTENNA_A:
 496                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
 497                 rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, 0);
 498                 if (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ)
 499                         rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
 500                 else
 501                         rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
 502                 break;
 503         case ANTENNA_SW_DIVERSITY:
 504                 /*
 505                  * NOTE: We should never come here because rt2x00lib is
 506                  * supposed to catch this and send us the correct antenna
 507                  * explicitely. However we are nog going to bug about this.
 508                  * Instead, just default to antenna B.
 509                  */
 510         case ANTENNA_B:
 511                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
 512                 rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, 0);
 513                 if (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ)
 514                         rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
 515                 else
 516                         rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
 517                 break;
 518         }
 519
 520         rt73usb_bbp_write(rt2x00dev, 77, r77);
 521         rt73usb_bbp_write(rt2x00dev, 3, r3);
 522         rt73usb_bbp_write(rt2x00dev, 4, r4);
 523 }
 524
 525 static void rt73usb_config_antenna_2x(struct rt2x00_dev *rt2x00dev,
 526                                       struct antenna_setup *ant)
 527 {
 528         u8 r3;
 529         u8 r4;
 530         u8 r77;
 531
 532         rt73usb_bbp_read(rt2x00dev, 3, &r3);
 533         rt73usb_bbp_read(rt2x00dev, 4, &r4);
 534         rt73usb_bbp_read(rt2x00dev, 77, &r77);
 535
 536         rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, 0);
 537         rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END,
 538                           !test_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags));
 539
 540         /*
 541          * Configure the RX antenna.
 542          */
 543         switch (ant->rx) {
 544         case ANTENNA_HW_DIVERSITY:
 545                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 2);
 546                 break;
 547         case ANTENNA_A:
 548                 rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
 549                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
 550                 break;
 551         case ANTENNA_SW_DIVERSITY:
 552                 /*
 553                  * NOTE: We should never come here because rt2x00lib is
 554                  * supposed to catch this and send us the correct antenna
 555                  * explicitely. However we are nog going to bug about this.
 556                  * Instead, just default to antenna B.
 557                  */
 558         case ANTENNA_B:
 559                 rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
 560                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
 561                 break;
 562         }
 563
 564         rt73usb_bbp_write(rt2x00dev, 77, r77);
 565         rt73usb_bbp_write(rt2x00dev, 3, r3);
 566         rt73usb_bbp_write(rt2x00dev, 4, r4);
 567 }
 568
 569 struct antenna_sel {
 570         u8 word;
 571         /*
 572          * value[0] -> non-LNA
 573          * value[1] -> LNA
 574          */
 575         u8 value[2];
 576 };
 577
 578 static const struct antenna_sel antenna_sel_a[] = {
 579         { 96,  { 0x58, 0x78 } },
 580         { 104, { 0x38, 0x48 } },
 581         { 75,  { 0xfe, 0x80 } },
 582         { 86,  { 0xfe, 0x80 } },
 583         { 88,  { 0xfe, 0x80 } },
 584         { 35,  { 0x60, 0x60 } },
 585         { 97,  { 0x58, 0x58 } },
 586         { 98,  { 0x58, 0x58 } },
 587 };
 588
 589 static const struct antenna_sel antenna_sel_bg[] = {
 590         { 96,  { 0x48, 0x68 } },
 591         { 104, { 0x2c, 0x3c } },
 592         { 75,  { 0xfe, 0x80 } },
 593         { 86,  { 0xfe, 0x80 } },
 594         { 88,  { 0xfe, 0x80 } },
 595         { 35,  { 0x50, 0x50 } },
 596         { 97,  { 0x48, 0x48 } },
 597         { 98,  { 0x48, 0x48 } },
 598 };
 599
 600 static void rt73usb_config_antenna(struct rt2x00_dev *rt2x00dev,
 601                                    struct antenna_setup *ant)
 602 {
 603         const struct antenna_sel *sel;
 604         unsigned int lna;
 605         unsigned int i;
 606         u32 reg;
 607
 608         if (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ) {
 609                 sel = antenna_sel_a;
 610                 lna = test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags);
 611         } else {
 612                 sel = antenna_sel_bg;
 613                 lna = test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags);
 614         }
 615
 616         for (i = 0; i < ARRAY_SIZE(antenna_sel_a); i++)
 617                 rt73usb_bbp_write(rt2x00dev, sel[i].word, sel[i].value[lna]);
 618
 619         rt73usb_register_read(rt2x00dev, PHY_CSR0, &reg);
 620
 621         rt2x00_set_field32(&reg, PHY_CSR0_PA_PE_BG,
 622                            (rt2x00dev->curr_band == IEEE80211_BAND_2GHZ));
 623         rt2x00_set_field32(&reg, PHY_CSR0_PA_PE_A,
 624                            (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ));
 625
 626         rt73usb_register_write(rt2x00dev, PHY_CSR0, reg);
 627
 628         if (rt2x00_rf(&rt2x00dev->chip, RF5226) ||
 629             rt2x00_rf(&rt2x00dev->chip, RF5225))
 630                 rt73usb_config_antenna_5x(rt2x00dev, ant);
 631         else if (rt2x00_rf(&rt2x00dev->chip, RF2528) ||
 632                  rt2x00_rf(&rt2x00dev->chip, RF2527))
 633                 rt73usb_config_antenna_2x(rt2x00dev, ant);
 634 }
 635
 636 static void rt73usb_config_duration(struct rt2x00_dev *rt2x00dev,
 637                                     struct rt2x00lib_conf *libconf)
 638 {
 639         u32 reg;
 640
 641         rt73usb_register_read(rt2x00dev, MAC_CSR9, &reg);
 642         rt2x00_set_field32(&reg, MAC_CSR9_SLOT_TIME, libconf->slot_time);
 643         rt73usb_register_write(rt2x00dev, MAC_CSR9, reg);
 644
 645         rt73usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 646         rt2x00_set_field32(&reg, MAC_CSR8_SIFS, libconf->sifs);
 647         rt2x00_set_field32(&reg, MAC_CSR8_SIFS_AFTER_RX_OFDM, 3);
 648         rt2x00_set_field32(&reg, MAC_CSR8_EIFS, libconf->eifs);
 649         rt73usb_register_write(rt2x00dev, MAC_CSR8, reg);
 650
 651         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 652         rt2x00_set_field32(&reg, TXRX_CSR0_TSF_OFFSET, IEEE80211_HEADER);
 653         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 654
 655         rt73usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
 656         rt2x00_set_field32(&reg, TXRX_CSR4_AUTORESPOND_ENABLE, 1);
 657         rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
 658
 659         rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
 660         rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_INTERVAL,
 661                            libconf->conf->beacon_int * 16);
 662         rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
 663 }
 664
 665 static void rt73usb_config(struct rt2x00_dev *rt2x00dev,
 666                            struct rt2x00lib_conf *libconf,
 667                            const unsigned int flags)
 668 {
 669         if (flags & CONFIG_UPDATE_PHYMODE)
 670                 rt73usb_config_phymode(rt2x00dev, libconf->basic_rates);
 671         if (flags & CONFIG_UPDATE_CHANNEL)
 672                 rt73usb_config_channel(rt2x00dev, &libconf->rf,
 673                                        libconf->conf->power_level);
 674         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
 675                 rt73usb_config_txpower(rt2x00dev, libconf->conf->power_level);
 676         if (flags & CONFIG_UPDATE_ANTENNA)
 677                 rt73usb_config_antenna(rt2x00dev, &libconf->ant);
 678         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
 679                 rt73usb_config_duration(rt2x00dev, libconf);
 680 }
 681
 682 /*
 683  * Link tuning
 684  */
 685 static void rt73usb_link_stats(struct rt2x00_dev *rt2x00dev,
 686                                struct link_qual *qual)
 687 {
 688         u32 reg;
 689
 690         /*
 691          * Update FCS error count from register.
 692          */
 693         rt73usb_register_read(rt2x00dev, STA_CSR0, &reg);
 694         qual->rx_failed = rt2x00_get_field32(reg, STA_CSR0_FCS_ERROR);
 695
 696         /*
 697          * Update False CCA count from register.
 698          */
 699         rt73usb_register_read(rt2x00dev, STA_CSR1, &reg);
 700         qual->false_cca = rt2x00_get_field32(reg, STA_CSR1_FALSE_CCA_ERROR);
 701 }
 702
 703 static void rt73usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
 704 {
 705         rt73usb_bbp_write(rt2x00dev, 17, 0x20);
 706         rt2x00dev->link.vgc_level = 0x20;
 707 }
 708
 709 static void rt73usb_link_tuner(struct rt2x00_dev *rt2x00dev)
 710 {
 711         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
 712         u8 r17;
 713         u8 up_bound;
 714         u8 low_bound;
 715
 716         rt73usb_bbp_read(rt2x00dev, 17, &r17);
 717
 718         /*
 719          * Determine r17 bounds.
 720          */
 721         if (rt2x00dev->rx_status.band == IEEE80211_BAND_5GHZ) {
 722                 low_bound = 0x28;
 723                 up_bound = 0x48;
 724
 725                 if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags)) {
 726                         low_bound += 0x10;
 727                         up_bound += 0x10;
 728                 }
 729         } else {
 730                 if (rssi > -82) {
 731                         low_bound = 0x1c;
 732                         up_bound = 0x40;
 733                 } else if (rssi > -84) {
 734                         low_bound = 0x1c;
 735                         up_bound = 0x20;
 736                 } else {
 737                         low_bound = 0x1c;
 738                         up_bound = 0x1c;
 739                 }
 740
 741                 if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags)) {
 742                         low_bound += 0x14;
 743                         up_bound += 0x10;
 744                 }
 745         }
 746
 747         /*
 748          * If we are not associated, we should go straight to the
 749          * dynamic CCA tuning.
 750          */
 751         if (!rt2x00dev->intf_associated)
 752                 goto dynamic_cca_tune;
 753
 754         /*
 755          * Special big-R17 for very short distance
 756          */
 757         if (rssi > -35) {
 758                 if (r17 != 0x60)
 759                         rt73usb_bbp_write(rt2x00dev, 17, 0x60);
 760                 return;
 761         }
 762
 763         /*
 764          * Special big-R17 for short distance
 765          */
 766         if (rssi >= -58) {
 767                 if (r17 != up_bound)
 768                         rt73usb_bbp_write(rt2x00dev, 17, up_bound);
 769                 return;
 770         }
 771
 772         /*
 773          * Special big-R17 for middle-short distance
 774          */
 775         if (rssi >= -66) {
 776                 low_bound += 0x10;
 777                 if (r17 != low_bound)
 778                         rt73usb_bbp_write(rt2x00dev, 17, low_bound);
 779                 return;
 780         }
 781
 782         /*
 783          * Special mid-R17 for middle distance
 784          */
 785         if (rssi >= -74) {
 786                 if (r17 != (low_bound + 0x10))
 787                         rt73usb_bbp_write(rt2x00dev, 17, low_bound + 0x08);
 788                 return;
 789         }
 790
 791         /*
 792          * Special case: Change up_bound based on the rssi.
 793          * Lower up_bound when rssi is weaker then -74 dBm.
 794          */
 795         up_bound -= 2 * (-74 - rssi);
 796         if (low_bound > up_bound)
 797                 up_bound = low_bound;
 798
 799         if (r17 > up_bound) {
 800                 rt73usb_bbp_write(rt2x00dev, 17, up_bound);
 801                 return;
 802         }
 803
 804 dynamic_cca_tune:
 805
 806         /*
 807          * r17 does not yet exceed upper limit, continue and base
 808          * the r17 tuning on the false CCA count.
 809          */
 810         if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
 811                 r17 += 4;
 812                 if (r17 > up_bound)
 813                         r17 = up_bound;
 814                 rt73usb_bbp_write(rt2x00dev, 17, r17);
 815         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
 816                 r17 -= 4;
 817                 if (r17 < low_bound)
 818                         r17 = low_bound;
 819                 rt73usb_bbp_write(rt2x00dev, 17, r17);
 820         }
 821 }
 822
 823 /*
 824  * Firmware name function.
 825  */
 826 static char *rt73usb_get_firmware_name(struct rt2x00_dev *rt2x00dev)
 827 {
 828         return FIRMWARE_RT2571;
 829 }
 830
 831 /*
 832  * Initialization functions.
 833  */
 834 static int rt73usb_load_firmware(struct rt2x00_dev *rt2x00dev, void *data,
 835                                  const size_t len)
 836 {
 837         unsigned int i;
 838         int status;
 839         u32 reg;
 840         char *ptr = data;
 841         char *cache;
 842         int buflen;
 843         int timeout;
 844
 845         /*
 846          * Wait for stable hardware.
 847          */
 848         for (i = 0; i < 100; i++) {
 849                 rt73usb_register_read(rt2x00dev, MAC_CSR0, &reg);
 850                 if (reg)
 851                         break;
 852                 msleep(1);
 853         }
 854
 855         if (!reg) {
 856                 ERROR(rt2x00dev, "Unstable hardware.\n");
 857                 return -EBUSY;
 858         }
 859
 860         /*
 861          * Write firmware to device.
 862          * We setup a seperate cache for this action,
 863          * since we are going to write larger chunks of data
 864          * then normally used cache size.
 865          */
 866         cache = kmalloc(CSR_CACHE_SIZE_FIRMWARE, GFP_KERNEL);
 867         if (!cache) {
 868                 ERROR(rt2x00dev, "Failed to allocate firmware cache.\n");
 869                 return -ENOMEM;
 870         }
 871
 872         for (i = 0; i < len; i += CSR_CACHE_SIZE_FIRMWARE) {
 873                 buflen = min_t(int, len - i, CSR_CACHE_SIZE_FIRMWARE);
 874                 timeout = REGISTER_TIMEOUT * (buflen / sizeof(u32));
 875
 876                 memcpy(cache, ptr, buflen);
 877
 878                 rt2x00usb_vendor_request(rt2x00dev, USB_MULTI_WRITE,
 879                                          USB_VENDOR_REQUEST_OUT,
 880                                          FIRMWARE_IMAGE_BASE + i, 0,
 881                                          cache, buflen, timeout);
 882
 883                 ptr += buflen;
 884         }
 885
 886         kfree(cache);
 887
 888         /*
 889          * Send firmware request to device to load firmware,
 890          * we need to specify a long timeout time.
 891          */
 892         status = rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE,
 893                                              0, USB_MODE_FIRMWARE,
 894                                              REGISTER_TIMEOUT_FIRMWARE);
 895         if (status < 0) {
 896                 ERROR(rt2x00dev, "Failed to write Firmware to device.\n");
 897                 return status;
 898         }
 899
 900         return 0;
 901 }
 902
 903 static int rt73usb_init_registers(struct rt2x00_dev *rt2x00dev)
 904 {
 905         u32 reg;
 906
 907         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 908         rt2x00_set_field32(&reg, TXRX_CSR0_AUTO_TX_SEQ, 1);
 909         rt2x00_set_field32(&reg, TXRX_CSR0_DISABLE_RX, 0);
 910         rt2x00_set_field32(&reg, TXRX_CSR0_TX_WITHOUT_WAITING, 0);
 911         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 912
 913         rt73usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 914         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID0, 47); /* CCK Signal */
 915         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID0_VALID, 1);
 916         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID1, 30); /* Rssi */
 917         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID1_VALID, 1);
 918         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID2, 42); /* OFDM Rate */
 919         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID2_VALID, 1);
 920         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID3, 30); /* Rssi */
 921         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID3_VALID, 1);
 922         rt73usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 923
 924         /*
 925          * CCK TXD BBP registers
 926          */
 927         rt73usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 928         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID0, 13);
 929         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID0_VALID, 1);
 930         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID1, 12);
 931         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID1_VALID, 1);
 932         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID2, 11);
 933         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID2_VALID, 1);
 934         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID3, 10);
 935         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID3_VALID, 1);
 936         rt73usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 937
 938         /*
 939          * OFDM TXD BBP registers
 940          */
 941         rt73usb_register_read(rt2x00dev, TXRX_CSR3, &reg);
 942         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID0, 7);
 943         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID0_VALID, 1);
 944         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID1, 6);
 945         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID1_VALID, 1);
 946         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID2, 5);
 947         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID2_VALID, 1);
 948         rt73usb_register_write(rt2x00dev, TXRX_CSR3, reg);
 949
 950         rt73usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 951         rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_6MBS, 59);
 952         rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_9MBS, 53);
 953         rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_12MBS, 49);
 954         rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_18MBS, 46);
 955         rt73usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 956
 957         rt73usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 958         rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_24MBS, 44);
 959         rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_36MBS, 42);
 960         rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_48MBS, 42);
 961         rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_54MBS, 42);
 962         rt73usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 963
 964         rt73usb_register_write(rt2x00dev, TXRX_CSR15, 0x0000000f);
 965
 966         rt73usb_register_read(rt2x00dev, MAC_CSR6, &reg);
 967         rt2x00_set_field32(&reg, MAC_CSR6_MAX_FRAME_UNIT, 0xfff);
 968         rt73usb_register_write(rt2x00dev, MAC_CSR6, reg);
 969
 970         rt73usb_register_write(rt2x00dev, MAC_CSR10, 0x00000718);
 971
 972         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 973                 return -EBUSY;
 974
 975         rt73usb_register_write(rt2x00dev, MAC_CSR13, 0x00007f00);
 976
 977         rt73usb_register_read(rt2x00dev, MAC_CSR14, &reg);
 978         rt2x00_set_field32(&reg, MAC_CSR14_ON_PERIOD, 70);
 979         rt2x00_set_field32(&reg, MAC_CSR14_OFF_PERIOD, 30);
 980         rt73usb_register_write(rt2x00dev, MAC_CSR14, reg);
 981
 982         /*
 983          * Invalidate all Shared Keys (SEC_CSR0),
 984          * and clear the Shared key Cipher algorithms (SEC_CSR1 & SEC_CSR5)
 985          */
 986         rt73usb_register_write(rt2x00dev, SEC_CSR0, 0x00000000);
 987         rt73usb_register_write(rt2x00dev, SEC_CSR1, 0x00000000);
 988         rt73usb_register_write(rt2x00dev, SEC_CSR5, 0x00000000);
 989
 990         reg = 0x000023b0;
 991         if (rt2x00_rf(&rt2x00dev->chip, RF5225) ||
 992             rt2x00_rf(&rt2x00dev->chip, RF2527))
 993                 rt2x00_set_field32(&reg, PHY_CSR1_RF_RPI, 1);
 994         rt73usb_register_write(rt2x00dev, PHY_CSR1, reg);
 995
 996         rt73usb_register_write(rt2x00dev, PHY_CSR5, 0x00040a06);
 997         rt73usb_register_write(rt2x00dev, PHY_CSR6, 0x00080606);
 998         rt73usb_register_write(rt2x00dev, PHY_CSR7, 0x00000408);
 999
1000         rt73usb_register_read(rt2x00dev, AC_TXOP_CSR0, &reg);
1001         rt2x00_set_field32(&reg, AC_TXOP_CSR0_AC0_TX_OP, 0);
1002         rt2x00_set_field32(&reg, AC_TXOP_CSR0_AC1_TX_OP, 0);
1003         rt73usb_register_write(rt2x00dev, AC_TXOP_CSR0, reg);
1004
1005         rt73usb_register_read(rt2x00dev, AC_TXOP_CSR1, &reg);
1006         rt2x00_set_field32(&reg, AC_TXOP_CSR1_AC2_TX_OP, 192);
1007         rt2x00_set_field32(&reg, AC_TXOP_CSR1_AC3_TX_OP, 48);
1008         rt73usb_register_write(rt2x00dev, AC_TXOP_CSR1, reg);
1009
1010         rt73usb_register_read(rt2x00dev, MAC_CSR9, &reg);
1011         rt2x00_set_field32(&reg, MAC_CSR9_CW_SELECT, 0);
1012         rt73usb_register_write(rt2x00dev, MAC_CSR9, reg);
1013
1014         /*
1015          * Clear all beacons
1016          * For the Beacon base registers we only need to clear
1017          * the first byte since that byte contains the VALID and OWNER
1018          * bits which (when set to 0) will invalidate the entire beacon.
1019          */
1020         rt73usb_register_write(rt2x00dev, HW_BEACON_BASE0, 0);
1021         rt73usb_register_write(rt2x00dev, HW_BEACON_BASE1, 0);
1022         rt73usb_register_write(rt2x00dev, HW_BEACON_BASE2, 0);
1023         rt73usb_register_write(rt2x00dev, HW_BEACON_BASE3, 0);
1024
1025         /*
1026          * We must clear the error counters.
1027          * These registers are cleared on read,
1028          * so we may pass a useless variable to store the value.
1029          */
1030         rt73usb_register_read(rt2x00dev, STA_CSR0, &reg);
1031         rt73usb_register_read(rt2x00dev, STA_CSR1, &reg);
1032         rt73usb_register_read(rt2x00dev, STA_CSR2, &reg);
1033
1034         /*
1035          * Reset MAC and BBP registers.
1036          */
1037         rt73usb_register_read(rt2x00dev, MAC_CSR1, &reg);
1038         rt2x00_set_field32(&reg, MAC_CSR1_SOFT_RESET, 1);
1039         rt2x00_set_field32(&reg, MAC_CSR1_BBP_RESET, 1);
1040         rt73usb_register_write(rt2x00dev, MAC_CSR1, reg);
1041
1042         rt73usb_register_read(rt2x00dev, MAC_CSR1, &reg);
1043         rt2x00_set_field32(&reg, MAC_CSR1_SOFT_RESET, 0);
1044         rt2x00_set_field32(&reg, MAC_CSR1_BBP_RESET, 0);
1045         rt73usb_register_write(rt2x00dev, MAC_CSR1, reg);
1046
1047         rt73usb_register_read(rt2x00dev, MAC_CSR1, &reg);
1048         rt2x00_set_field32(&reg, MAC_CSR1_HOST_READY, 1);
1049         rt73usb_register_write(rt2x00dev, MAC_CSR1, reg);
1050
1051         return 0;
1052 }
1053
1054 static int rt73usb_init_bbp(struct rt2x00_dev *rt2x00dev)
1055 {
1056         unsigned int i;
1057         u16 eeprom;
1058         u8 reg_id;
1059         u8 value;
1060
1061         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
1062                 rt73usb_bbp_read(rt2x00dev, 0, &value);
1063                 if ((value != 0xff) && (value != 0x00))
1064                         goto continue_csr_init;
1065                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
1066                 udelay(REGISTER_BUSY_DELAY);
1067         }
1068
1069         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
1070         return -EACCES;
1071
1072 continue_csr_init:
1073         rt73usb_bbp_write(rt2x00dev, 3, 0x80);
1074         rt73usb_bbp_write(rt2x00dev, 15, 0x30);
1075         rt73usb_bbp_write(rt2x00dev, 21, 0xc8);
1076         rt73usb_bbp_write(rt2x00dev, 22, 0x38);
1077         rt73usb_bbp_write(rt2x00dev, 23, 0x06);
1078         rt73usb_bbp_write(rt2x00dev, 24, 0xfe);
1079         rt73usb_bbp_write(rt2x00dev, 25, 0x0a);
1080         rt73usb_bbp_write(rt2x00dev, 26, 0x0d);
1081         rt73usb_bbp_write(rt2x00dev, 32, 0x0b);
1082         rt73usb_bbp_write(rt2x00dev, 34, 0x12);
1083         rt73usb_bbp_write(rt2x00dev, 37, 0x07);
1084         rt73usb_bbp_write(rt2x00dev, 39, 0xf8);
1085         rt73usb_bbp_write(rt2x00dev, 41, 0x60);
1086         rt73usb_bbp_write(rt2x00dev, 53, 0x10);
1087         rt73usb_bbp_write(rt2x00dev, 54, 0x18);
1088         rt73usb_bbp_write(rt2x00dev, 60, 0x10);
1089         rt73usb_bbp_write(rt2x00dev, 61, 0x04);
1090         rt73usb_bbp_write(rt2x00dev, 62, 0x04);
1091         rt73usb_bbp_write(rt2x00dev, 75, 0xfe);
1092         rt73usb_bbp_write(rt2x00dev, 86, 0xfe);
1093         rt73usb_bbp_write(rt2x00dev, 88, 0xfe);
1094         rt73usb_bbp_write(rt2x00dev, 90, 0x0f);
1095         rt73usb_bbp_write(rt2x00dev, 99, 0x00);
1096         rt73usb_bbp_write(rt2x00dev, 102, 0x16);
1097         rt73usb_bbp_write(rt2x00dev, 107, 0x04);
1098
1099         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
1100                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
1101
1102                 if (eeprom != 0xffff && eeprom != 0x0000) {
1103                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
1104                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
1105                         rt73usb_bbp_write(rt2x00dev, reg_id, value);
1106                 }
1107         }
1108
1109         return 0;
1110 }
1111
1112 /*
1113  * Device state switch handlers.
1114  */
1115 static void rt73usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
1116                               enum dev_state state)
1117 {
1118         u32 reg;
1119
1120         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
1121         rt2x00_set_field32(&reg, TXRX_CSR0_DISABLE_RX,
1122                            state == STATE_RADIO_RX_OFF);
1123         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
1124 }
1125
1126 static int rt73usb_enable_radio(struct rt2x00_dev *rt2x00dev)
1127 {
1128         /*
1129          * Initialize all registers.
1130          */
1131         if (rt73usb_init_registers(rt2x00dev) ||
1132             rt73usb_init_bbp(rt2x00dev)) {
1133                 ERROR(rt2x00dev, "Register initialization failed.\n");
1134                 return -EIO;
1135         }
1136
1137         return 0;
1138 }
1139
1140 static void rt73usb_disable_radio(struct rt2x00_dev *rt2x00dev)
1141 {
1142         rt73usb_register_write(rt2x00dev, MAC_CSR10, 0x00001818);
1143
1144         /*
1145          * Disable synchronisation.
1146          */
1147         rt73usb_register_write(rt2x00dev, TXRX_CSR9, 0);
1148
1149         rt2x00usb_disable_radio(rt2x00dev);
1150 }
1151
1152 static int rt73usb_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state)
1153 {
1154         u32 reg;
1155         unsigned int i;
1156         char put_to_sleep;
1157         char current_state;
1158
1159         put_to_sleep = (state != STATE_AWAKE);
1160
1161         rt73usb_register_read(rt2x00dev, MAC_CSR12, &reg);
1162         rt2x00_set_field32(&reg, MAC_CSR12_FORCE_WAKEUP, !put_to_sleep);
1163         rt2x00_set_field32(&reg, MAC_CSR12_PUT_TO_SLEEP, put_to_sleep);
1164         rt73usb_register_write(rt2x00dev, MAC_CSR12, reg);
1165
1166         /*
1167          * Device is not guaranteed to be in the requested state yet.
1168          * We must wait until the register indicates that the
1169          * device has entered the correct state.
1170          */
1171         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
1172                 rt73usb_register_read(rt2x00dev, MAC_CSR12, &reg);
1173                 current_state =
1174                     rt2x00_get_field32(reg, MAC_CSR12_BBP_CURRENT_STATE);
1175                 if (current_state == !put_to_sleep)
1176                         return 0;
1177                 msleep(10);
1178         }
1179
1180         NOTICE(rt2x00dev, "Device failed to enter state %d, "
1181                "current device state %d.\n", !put_to_sleep, current_state);
1182
1183         return -EBUSY;
1184 }
1185
1186 static int rt73usb_set_device_state(struct rt2x00_dev *rt2x00dev,
1187                                     enum dev_state state)
1188 {
1189         int retval = 0;
1190
1191         switch (state) {
1192         case STATE_RADIO_ON:
1193                 retval = rt73usb_enable_radio(rt2x00dev);
1194                 break;
1195         case STATE_RADIO_OFF:
1196                 rt73usb_disable_radio(rt2x00dev);
1197                 break;
1198         case STATE_RADIO_RX_ON:
1199         case STATE_RADIO_RX_ON_LINK:
1200                 rt73usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
1201                 break;
1202         case STATE_RADIO_RX_OFF:
1203         case STATE_RADIO_RX_OFF_LINK:
1204                 rt73usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
1205                 break;
1206         case STATE_DEEP_SLEEP:
1207         case STATE_SLEEP:
1208         case STATE_STANDBY:
1209         case STATE_AWAKE:
1210                 retval = rt73usb_set_state(rt2x00dev, state);
1211                 break;
1212         default:
1213                 retval = -ENOTSUPP;
1214                 break;
1215         }
1216
1217         return retval;
1218 }
1219
1220 /*
1221  * TX descriptor initialization
1222  */
1223 static void rt73usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1224                                     struct sk_buff *skb,
1225                                     struct txentry_desc *txdesc,
1226                                     struct ieee80211_tx_control *control)
1227 {
1228         struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
1229         __le32 *txd = skbdesc->desc;
1230         u32 word;
1231
1232         /*
1233          * Start writing the descriptor words.
1234          */
1235         rt2x00_desc_read(txd, 1, &word);
1236         rt2x00_set_field32(&word, TXD_W1_HOST_Q_ID, txdesc->queue);
1237         rt2x00_set_field32(&word, TXD_W1_AIFSN, txdesc->aifs);
1238         rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
1239         rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
1240         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1241         rt2x00_set_field32(&word, TXD_W1_HW_SEQUENCE, 1);
1242         rt2x00_desc_write(txd, 1, word);
1243
1244         rt2x00_desc_read(txd, 2, &word);
1245         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
1246         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
1247         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
1248         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
1249         rt2x00_desc_write(txd, 2, word);
1250
1251         rt2x00_desc_read(txd, 5, &word);
1252         rt2x00_set_field32(&word, TXD_W5_TX_POWER,
1253                            TXPOWER_TO_DEV(rt2x00dev->tx_power));
1254         rt2x00_set_field32(&word, TXD_W5_WAITING_DMA_DONE_INT, 1);
1255         rt2x00_desc_write(txd, 5, word);
1256
1257         rt2x00_desc_read(txd, 0, &word);
1258         rt2x00_set_field32(&word, TXD_W0_BURST,
1259                            test_bit(ENTRY_TXD_BURST, &txdesc->flags));
1260         rt2x00_set_field32(&word, TXD_W0_VALID, 1);
1261         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1262                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1263         rt2x00_set_field32(&word, TXD_W0_ACK,
1264                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1265         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1266                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1267         rt2x00_set_field32(&word, TXD_W0_OFDM,
1268                            test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
1269         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1270         rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
1271                            !!(control->flags &
1272                               IEEE80211_TXCTL_LONG_RETRY_LIMIT));
1273         rt2x00_set_field32(&word, TXD_W0_TKIP_MIC, 0);
1274         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skbdesc->data_len);
1275         rt2x00_set_field32(&word, TXD_W0_BURST2,
1276                            test_bit(ENTRY_TXD_BURST, &txdesc->flags));
1277         rt2x00_set_field32(&word, TXD_W0_CIPHER_ALG, CIPHER_NONE);
1278         rt2x00_desc_write(txd, 0, word);
1279 }
1280
1281 static int rt73usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1282                                    struct sk_buff *skb)
1283 {
1284         int length;
1285
1286         /*
1287          * The length _must_ be a multiple of 4,
1288          * but it must _not_ be a multiple of the USB packet size.
1289          */
1290         length = roundup(skb->len, 4);
1291         length += (4 * !(length % rt2x00dev->usb_maxpacket));
1292
1293         return length;
1294 }
1295
1296 /*
1297  * TX data initialization
1298  */
1299 static void rt73usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1300                                   const unsigned int queue)
1301 {
1302         u32 reg;
1303
1304         if (queue != RT2X00_BCN_QUEUE_BEACON)
1305                 return;
1306
1307         /*
1308          * For Wi-Fi faily generated beacons between participating stations.
1309          * Set TBTT phase adaptive adjustment step to 8us (default 16us)
1310          */
1311         rt73usb_register_write(rt2x00dev, TXRX_CSR10, 0x00001008);
1312
1313         rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
1314         if (!rt2x00_get_field32(reg, TXRX_CSR9_BEACON_GEN)) {
1315                 rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 1);
1316                 rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
1317         }
1318 }
1319
1320 /*
1321  * RX control handlers
1322  */
1323 static int rt73usb_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxd_w1)
1324 {
1325         u16 eeprom;
1326         u8 offset;
1327         u8 lna;
1328
1329         lna = rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_LNA);
1330         switch (lna) {
1331         case 3:
1332                 offset = 90;
1333                 break;
1334         case 2:
1335                 offset = 74;
1336                 break;
1337         case 1:
1338                 offset = 64;
1339                 break;
1340         default:
1341                 return 0;
1342         }
1343
1344         if (rt2x00dev->rx_status.band == IEEE80211_BAND_5GHZ) {
1345                 if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags)) {
1346                         if (lna == 3 || lna == 2)
1347                                 offset += 10;
1348                 } else {
1349                         if (lna == 3)
1350                                 offset += 6;
1351                         else if (lna == 2)
1352                                 offset += 8;
1353                 }
1354
1355                 rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom);
1356                 offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1);
1357         } else {
1358                 if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags))
1359                         offset += 14;
1360
1361                 rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom);
1362                 offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1);
1363         }
1364
1365         return rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_AGC) * 2 - offset;
1366 }
1367
1368 static void rt73usb_fill_rxdone(struct queue_entry *entry,
1369                                 struct rxdone_entry_desc *rxdesc)
1370 {
1371         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1372         __le32 *rxd = (__le32 *)entry->skb->data;
1373         unsigned int offset = entry->queue->desc_size + 2;
1374         u32 word0;
1375         u32 word1;
1376
1377         /*
1378          * Copy descriptor to the available headroom inside the skbuffer.
1379          */
1380         skb_push(entry->skb, offset);
1381         memcpy(entry->skb->data, rxd, entry->queue->desc_size);
1382         rxd = (__le32 *)entry->skb->data;
1383
1384         /*
1385          * The descriptor is now aligned to 4 bytes and thus it is
1386          * now safe to read it on all architectures.
1387          */
1388         rt2x00_desc_read(rxd, 0, &word0);
1389         rt2x00_desc_read(rxd, 1, &word1);
1390
1391         rxdesc->flags = 0;
1392         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1393                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1394
1395         /*
1396          * Obtain the status about this packet.
1397          */
1398         rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1399         rxdesc->rssi = rt73usb_agc_to_rssi(entry->queue->rt2x00dev, word1);
1400         rxdesc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1401         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1402         rxdesc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
1403
1404         /*
1405          * Adjust the skb memory window to the frame boundaries.
1406          */
1407         skb_pull(entry->skb, offset + entry->queue->desc_size);
1408         skb_trim(entry->skb, rxdesc->size);
1409
1410         /*
1411          * Set descriptor and data pointer.
1412          */
1413         skbdesc->data = entry->skb->data;
1414         skbdesc->data_len = rxdesc->size;
1415         skbdesc->desc = rxd;
1416         skbdesc->desc_len = entry->queue->desc_size;
1417 }
1418
1419 /*
1420  * Device probe functions.
1421  */
1422 static int rt73usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1423 {
1424         u16 word;
1425         u8 *mac;
1426         s8 value;
1427
1428         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1429
1430         /*
1431          * Start validation of the data that has been read.
1432          */
1433         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1434         if (!is_valid_ether_addr(mac)) {
1435                 DECLARE_MAC_BUF(macbuf);
1436
1437                 random_ether_addr(mac);
1438                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1439         }
1440
1441         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1442         if (word == 0xffff) {
1443                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1444                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1445                                    ANTENNA_B);
1446                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1447                                    ANTENNA_B);
1448                 rt2x00_set_field16(&word, EEPROM_ANTENNA_FRAME_TYPE, 0);
1449                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1450                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1451                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF5226);
1452                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1453                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1454         }
1455
1456         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1457         if (word == 0xffff) {
1458                 rt2x00_set_field16(&word, EEPROM_NIC_EXTERNAL_LNA, 0);
1459                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1460                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1461         }
1462
1463         rt2x00_eeprom_read(rt2x00dev, EEPROM_LED, &word);
1464         if (word == 0xffff) {
1465                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_RDY_G, 0);
1466                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_RDY_A, 0);
1467                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_ACT, 0);
1468                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_0, 0);
1469                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_1, 0);
1470                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_2, 0);
1471                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_3, 0);
1472                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_4, 0);
1473                 rt2x00_set_field16(&word, EEPROM_LED_LED_MODE,
1474                                    LED_MODE_DEFAULT);
1475                 rt2x00_eeprom_write(rt2x00dev, EEPROM_LED, word);
1476                 EEPROM(rt2x00dev, "Led: 0x%04x\n", word);
1477         }
1478
1479         rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &word);
1480         if (word == 0xffff) {
1481                 rt2x00_set_field16(&word, EEPROM_FREQ_OFFSET, 0);
1482                 rt2x00_set_field16(&word, EEPROM_FREQ_SEQ, 0);
1483                 rt2x00_eeprom_write(rt2x00dev, EEPROM_FREQ, word);
1484                 EEPROM(rt2x00dev, "Freq: 0x%04x\n", word);
1485         }
1486
1487         rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &word);
1488         if (word == 0xffff) {
1489                 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_1, 0);
1490                 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_2, 0);
1491                 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_BG, word);
1492                 EEPROM(rt2x00dev, "RSSI OFFSET BG: 0x%04x\n", word);
1493         } else {
1494                 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_BG_1);
1495                 if (value < -10 || value > 10)
1496                         rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_1, 0);
1497                 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_BG_2);
1498                 if (value < -10 || value > 10)
1499                         rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_2, 0);
1500                 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_BG, word);
1501         }
1502
1503         rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &word);
1504         if (word == 0xffff) {
1505                 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_1, 0);
1506                 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_2, 0);
1507                 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_A, word);
1508                 EEPROM(rt2x00dev, "RSSI OFFSET A: 0x%04x\n", word);
1509         } else {
1510                 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_A_1);
1511                 if (value < -10 || value > 10)
1512                         rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_1, 0);
1513                 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_A_2);
1514                 if (value < -10 || value > 10)
1515                         rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_2, 0);
1516                 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_A, word);
1517         }
1518
1519         return 0;
1520 }
1521
1522 static int rt73usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1523 {
1524         u32 reg;
1525         u16 value;
1526         u16 eeprom;
1527
1528         /*
1529          * Read EEPROM word for configuration.
1530          */
1531         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1532
1533         /*
1534          * Identify RF chipset.
1535          */
1536         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1537         rt73usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1538         rt2x00_set_chip(rt2x00dev, RT2571, value, reg);
1539
1540         if (!rt2x00_check_rev(&rt2x00dev->chip, 0x25730)) {
1541                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1542                 return -ENODEV;
1543         }
1544
1545         if (!rt2x00_rf(&rt2x00dev->chip, RF5226) &&
1546             !rt2x00_rf(&rt2x00dev->chip, RF2528) &&
1547             !rt2x00_rf(&rt2x00dev->chip, RF5225) &&
1548             !rt2x00_rf(&rt2x00dev->chip, RF2527)) {
1549                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1550                 return -ENODEV;
1551         }
1552
1553         /*
1554          * Identify default antenna configuration.
1555          */
1556         rt2x00dev->default_ant.tx =
1557             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1558         rt2x00dev->default_ant.rx =
1559             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1560
1561         /*
1562          * Read the Frame type.
1563          */
1564         if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_FRAME_TYPE))
1565                 __set_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags);
1566
1567         /*
1568          * Read frequency offset.
1569          */
1570         rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &eeprom);
1571         rt2x00dev->freq_offset = rt2x00_get_field16(eeprom, EEPROM_FREQ_OFFSET);
1572
1573         /*
1574          * Read external LNA informations.
1575          */
1576         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1577
1578         if (rt2x00_get_field16(eeprom, EEPROM_NIC_EXTERNAL_LNA)) {
1579                 __set_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags);
1580                 __set_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags);
1581         }
1582
1583         /*
1584          * Store led settings, for correct led behaviour.
1585          */
1586 #ifdef CONFIG_RT73USB_LEDS
1587         rt2x00_eeprom_read(rt2x00dev, EEPROM_LED, &eeprom);
1588
1589         switch (value) {
1590         case LED_MODE_TXRX_ACTIVITY:
1591         case LED_MODE_ASUS:
1592         case LED_MODE_ALPHA:
1593         case LED_MODE_DEFAULT:
1594                 rt2x00dev->led_flags =
1595                     LED_SUPPORT_RADIO | LED_SUPPORT_ASSOC;
1596                 break;
1597         case LED_MODE_SIGNAL_STRENGTH:
1598                 rt2x00dev->led_flags =
1599                     LED_SUPPORT_RADIO | LED_SUPPORT_ASSOC |
1600                     LED_SUPPORT_QUALITY;
1601                 break;
1602         }
1603
1604         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_LED_MODE, value);
1605         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_0,
1606                            rt2x00_get_field16(eeprom,
1607                                               EEPROM_LED_POLARITY_GPIO_0));
1608         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_1,
1609                            rt2x00_get_field16(eeprom,
1610                                               EEPROM_LED_POLARITY_GPIO_1));
1611         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_2,
1612                            rt2x00_get_field16(eeprom,
1613                                               EEPROM_LED_POLARITY_GPIO_2));
1614         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_3,
1615                            rt2x00_get_field16(eeprom,
1616                                               EEPROM_LED_POLARITY_GPIO_3));
1617         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_4,
1618                            rt2x00_get_field16(eeprom,
1619                                               EEPROM_LED_POLARITY_GPIO_4));
1620         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_ACT,
1621                            rt2x00_get_field16(eeprom, EEPROM_LED_POLARITY_ACT));
1622         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_READY_BG,
1623                            rt2x00_get_field16(eeprom,
1624                                               EEPROM_LED_POLARITY_RDY_G));
1625         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_READY_A,
1626                            rt2x00_get_field16(eeprom,
1627                                               EEPROM_LED_POLARITY_RDY_A));
1628 #endif /* CONFIG_RT73USB_LEDS */
1629
1630         return 0;
1631 }
1632
1633 /*
1634  * RF value list for RF2528
1635  * Supports: 2.4 GHz
1636  */
1637 static const struct rf_channel rf_vals_bg_2528[] = {
1638         { 1,  0x00002c0c, 0x00000786, 0x00068255, 0x000fea0b },
1639         { 2,  0x00002c0c, 0x00000786, 0x00068255, 0x000fea1f },
1640         { 3,  0x00002c0c, 0x0000078a, 0x00068255, 0x000fea0b },
1641         { 4,  0x00002c0c, 0x0000078a, 0x00068255, 0x000fea1f },
1642         { 5,  0x00002c0c, 0x0000078e, 0x00068255, 0x000fea0b },
1643         { 6,  0x00002c0c, 0x0000078e, 0x00068255, 0x000fea1f },
1644         { 7,  0x00002c0c, 0x00000792, 0x00068255, 0x000fea0b },
1645         { 8,  0x00002c0c, 0x00000792, 0x00068255, 0x000fea1f },
1646         { 9,  0x00002c0c, 0x00000796, 0x00068255, 0x000fea0b },
1647         { 10, 0x00002c0c, 0x00000796, 0x00068255, 0x000fea1f },
1648         { 11, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea0b },
1649         { 12, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea1f },
1650         { 13, 0x00002c0c, 0x0000079e, 0x00068255, 0x000fea0b },
1651         { 14, 0x00002c0c, 0x000007a2, 0x00068255, 0x000fea13 },
1652 };
1653
1654 /*
1655  * RF value list for RF5226
1656  * Supports: 2.4 GHz & 5.2 GHz
1657  */
1658 static const struct rf_channel rf_vals_5226[] = {
1659         { 1,  0x00002c0c, 0x00000786, 0x00068255, 0x000fea0b },
1660         { 2,  0x00002c0c, 0x00000786, 0x00068255, 0x000fea1f },
1661         { 3,  0x00002c0c, 0x0000078a, 0x00068255, 0x000fea0b },
1662         { 4,  0x00002c0c, 0x0000078a, 0x00068255, 0x000fea1f },
1663         { 5,  0x00002c0c, 0x0000078e, 0x00068255, 0x000fea0b },
1664         { 6,  0x00002c0c, 0x0000078e, 0x00068255, 0x000fea1f },
1665         { 7,  0x00002c0c, 0x00000792, 0x00068255, 0x000fea0b },
1666         { 8,  0x00002c0c, 0x00000792, 0x00068255, 0x000fea1f },
1667         { 9,  0x00002c0c, 0x00000796, 0x00068255, 0x000fea0b },
1668         { 10, 0x00002c0c, 0x00000796, 0x00068255, 0x000fea1f },
1669         { 11, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea0b },
1670         { 12, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea1f },
1671         { 13, 0x00002c0c, 0x0000079e, 0x00068255, 0x000fea0b },
1672         { 14, 0x00002c0c, 0x000007a2, 0x00068255, 0x000fea13 },
1673
1674         /* 802.11 UNI / HyperLan 2 */
1675         { 36, 0x00002c0c, 0x0000099a, 0x00098255, 0x000fea23 },
1676         { 40, 0x00002c0c, 0x000009a2, 0x00098255, 0x000fea03 },
1677         { 44, 0x00002c0c, 0x000009a6, 0x00098255, 0x000fea0b },
1678         { 48, 0x00002c0c, 0x000009aa, 0x00098255, 0x000fea13 },
1679         { 52, 0x00002c0c, 0x000009ae, 0x00098255, 0x000fea1b },
1680         { 56, 0x00002c0c, 0x000009b2, 0x00098255, 0x000fea23 },
1681         { 60, 0x00002c0c, 0x000009ba, 0x00098255, 0x000fea03 },
1682         { 64, 0x00002c0c, 0x000009be, 0x00098255, 0x000fea0b },
1683
1684         /* 802.11 HyperLan 2 */
1685         { 100, 0x00002c0c, 0x00000a2a, 0x000b8255, 0x000fea03 },
1686         { 104, 0x00002c0c, 0x00000a2e, 0x000b8255, 0x000fea0b },
1687         { 108, 0x00002c0c, 0x00000a32, 0x000b8255, 0x000fea13 },
1688         { 112, 0x00002c0c, 0x00000a36, 0x000b8255, 0x000fea1b },
1689         { 116, 0x00002c0c, 0x00000a3a, 0x000b8255, 0x000fea23 },
1690         { 120, 0x00002c0c, 0x00000a82, 0x000b8255, 0x000fea03 },
1691         { 124, 0x00002c0c, 0x00000a86, 0x000b8255, 0x000fea0b },
1692         { 128, 0x00002c0c, 0x00000a8a, 0x000b8255, 0x000fea13 },
1693         { 132, 0x00002c0c, 0x00000a8e, 0x000b8255, 0x000fea1b },
1694         { 136, 0x00002c0c, 0x00000a92, 0x000b8255, 0x000fea23 },
1695
1696         /* 802.11 UNII */
1697         { 140, 0x00002c0c, 0x00000a9a, 0x000b8255, 0x000fea03 },
1698         { 149, 0x00002c0c, 0x00000aa2, 0x000b8255, 0x000fea1f },
1699         { 153, 0x00002c0c, 0x00000aa6, 0x000b8255, 0x000fea27 },
1700         { 157, 0x00002c0c, 0x00000aae, 0x000b8255, 0x000fea07 },
1701         { 161, 0x00002c0c, 0x00000ab2, 0x000b8255, 0x000fea0f },
1702         { 165, 0x00002c0c, 0x00000ab6, 0x000b8255, 0x000fea17 },
1703
1704         /* MMAC(Japan)J52 ch 34,38,42,46 */
1705         { 34, 0x00002c0c, 0x0008099a, 0x000da255, 0x000d3a0b },
1706         { 38, 0x00002c0c, 0x0008099e, 0x000da255, 0x000d3a13 },
1707         { 42, 0x00002c0c, 0x000809a2, 0x000da255, 0x000d3a1b },
1708         { 46, 0x00002c0c, 0x000809a6, 0x000da255, 0x000d3a23 },
1709 };
1710
1711 /*
1712  * RF value list for RF5225 & RF2527
1713  * Supports: 2.4 GHz & 5.2 GHz
1714  */
1715 static const struct rf_channel rf_vals_5225_2527[] = {
1716         { 1,  0x00002ccc, 0x00004786, 0x00068455, 0x000ffa0b },
1717         { 2,  0x00002ccc, 0x00004786, 0x00068455, 0x000ffa1f },
1718         { 3,  0x00002ccc, 0x0000478a, 0x00068455, 0x000ffa0b },
1719         { 4,  0x00002ccc, 0x0000478a, 0x00068455, 0x000ffa1f },
1720         { 5,  0x00002ccc, 0x0000478e, 0x00068455, 0x000ffa0b },
1721         { 6,  0x00002ccc, 0x0000478e, 0x00068455, 0x000ffa1f },
1722         { 7,  0x00002ccc, 0x00004792, 0x00068455, 0x000ffa0b },
1723         { 8,  0x00002ccc, 0x00004792, 0x00068455, 0x000ffa1f },
1724         { 9,  0x00002ccc, 0x00004796, 0x00068455, 0x000ffa0b },
1725         { 10, 0x00002ccc, 0x00004796, 0x00068455, 0x000ffa1f },
1726         { 11, 0x00002ccc, 0x0000479a, 0x00068455, 0x000ffa0b },
1727         { 12, 0x00002ccc, 0x0000479a, 0x00068455, 0x000ffa1f },
1728         { 13, 0x00002ccc, 0x0000479e, 0x00068455, 0x000ffa0b },
1729         { 14, 0x00002ccc, 0x000047a2, 0x00068455, 0x000ffa13 },
1730
1731         /* 802.11 UNI / HyperLan 2 */
1732         { 36, 0x00002ccc, 0x0000499a, 0x0009be55, 0x000ffa23 },
1733         { 40, 0x00002ccc, 0x000049a2, 0x0009be55, 0x000ffa03 },
1734         { 44, 0x00002ccc, 0x000049a6, 0x0009be55, 0x000ffa0b },
1735         { 48, 0x00002ccc, 0x000049aa, 0x0009be55, 0x000ffa13 },
1736         { 52, 0x00002ccc, 0x000049ae, 0x0009ae55, 0x000ffa1b },
1737         { 56, 0x00002ccc, 0x000049b2, 0x0009ae55, 0x000ffa23 },
1738         { 60, 0x00002ccc, 0x000049ba, 0x0009ae55, 0x000ffa03 },
1739         { 64, 0x00002ccc, 0x000049be, 0x0009ae55, 0x000ffa0b },
1740
1741         /* 802.11 HyperLan 2 */
1742         { 100, 0x00002ccc, 0x00004a2a, 0x000bae55, 0x000ffa03 },
1743         { 104, 0x00002ccc, 0x00004a2e, 0x000bae55, 0x000ffa0b },
1744         { 108, 0x00002ccc, 0x00004a32, 0x000bae55, 0x000ffa13 },
1745         { 112, 0x00002ccc, 0x00004a36, 0x000bae55, 0x000ffa1b },
1746         { 116, 0x00002ccc, 0x00004a3a, 0x000bbe55, 0x000ffa23 },
1747         { 120, 0x00002ccc, 0x00004a82, 0x000bbe55, 0x000ffa03 },
1748         { 124, 0x00002ccc, 0x00004a86, 0x000bbe55, 0x000ffa0b },
1749         { 128, 0x00002ccc, 0x00004a8a, 0x000bbe55, 0x000ffa13 },
1750         { 132, 0x00002ccc, 0x00004a8e, 0x000bbe55, 0x000ffa1b },
1751         { 136, 0x00002ccc, 0x00004a92, 0x000bbe55, 0x000ffa23 },
1752
1753         /* 802.11 UNII */
1754         { 140, 0x00002ccc, 0x00004a9a, 0x000bbe55, 0x000ffa03 },
1755         { 149, 0x00002ccc, 0x00004aa2, 0x000bbe55, 0x000ffa1f },
1756         { 153, 0x00002ccc, 0x00004aa6, 0x000bbe55, 0x000ffa27 },
1757         { 157, 0x00002ccc, 0x00004aae, 0x000bbe55, 0x000ffa07 },
1758         { 161, 0x00002ccc, 0x00004ab2, 0x000bbe55, 0x000ffa0f },
1759         { 165, 0x00002ccc, 0x00004ab6, 0x000bbe55, 0x000ffa17 },
1760
1761         /* MMAC(Japan)J52 ch 34,38,42,46 */
1762         { 34, 0x00002ccc, 0x0000499a, 0x0009be55, 0x000ffa0b },
1763         { 38, 0x00002ccc, 0x0000499e, 0x0009be55, 0x000ffa13 },
1764         { 42, 0x00002ccc, 0x000049a2, 0x0009be55, 0x000ffa1b },
1765         { 46, 0x00002ccc, 0x000049a6, 0x0009be55, 0x000ffa23 },
1766 };
1767
1768
1769 static void rt73usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1770 {
1771         struct hw_mode_spec *spec = &rt2x00dev->spec;
1772         u8 *txpower;
1773         unsigned int i;
1774
1775         /*
1776          * Initialize all hw fields.
1777          */
1778         rt2x00dev->hw->flags =
1779             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1780             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1781         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1782         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1783         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1784         rt2x00dev->hw->queues = 4;
1785
1786         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1787         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1788                                 rt2x00_eeprom_addr(rt2x00dev,
1789                                                    EEPROM_MAC_ADDR_0));
1790
1791         /*
1792          * Convert tx_power array in eeprom.
1793          */
1794         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_G_START);
1795         for (i = 0; i < 14; i++)
1796                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1797
1798         /*
1799          * Initialize hw_mode information.
1800          */
1801         spec->supported_bands = SUPPORT_BAND_2GHZ;
1802         spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM;
1803         spec->tx_power_a = NULL;
1804         spec->tx_power_bg = txpower;
1805         spec->tx_power_default = DEFAULT_TXPOWER;
1806
1807         if (rt2x00_rf(&rt2x00dev->chip, RF2528)) {
1808                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2528);
1809                 spec->channels = rf_vals_bg_2528;
1810         } else if (rt2x00_rf(&rt2x00dev->chip, RF5226)) {
1811                 spec->supported_bands |= SUPPORT_BAND_5GHZ;
1812                 spec->num_channels = ARRAY_SIZE(rf_vals_5226);
1813                 spec->channels = rf_vals_5226;
1814         } else if (rt2x00_rf(&rt2x00dev->chip, RF2527)) {
1815                 spec->num_channels = 14;
1816                 spec->channels = rf_vals_5225_2527;
1817         } else if (rt2x00_rf(&rt2x00dev->chip, RF5225)) {
1818                 spec->supported_bands |= SUPPORT_BAND_5GHZ;
1819                 spec->num_channels = ARRAY_SIZE(rf_vals_5225_2527);
1820                 spec->channels = rf_vals_5225_2527;
1821         }
1822
1823         if (rt2x00_rf(&rt2x00dev->chip, RF5225) ||
1824             rt2x00_rf(&rt2x00dev->chip, RF5226)) {
1825                 txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_A_START);
1826                 for (i = 0; i < 14; i++)
1827                         txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1828
1829                 spec->tx_power_a = txpower;
1830         }
1831 }
1832
1833 static int rt73usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1834 {
1835         int retval;
1836
1837         /*
1838          * Allocate eeprom data.
1839          */
1840         retval = rt73usb_validate_eeprom(rt2x00dev);
1841         if (retval)
1842                 return retval;
1843
1844         retval = rt73usb_init_eeprom(rt2x00dev);
1845         if (retval)
1846                 return retval;
1847
1848         /*
1849          * Initialize hw specifications.
1850          */
1851         rt73usb_probe_hw_mode(rt2x00dev);
1852
1853         /*
1854          * This device requires firmware.
1855          */
1856         __set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
1857         __set_bit(DRIVER_REQUIRE_FIRMWARE_CRC_ITU_T, &rt2x00dev->flags);
1858
1859         /*
1860          * Set the rssi offset.
1861          */
1862         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1863
1864         return 0;
1865 }
1866
1867 /*
1868  * IEEE80211 stack callback functions.
1869  */
1870 static void rt73usb_configure_filter(struct ieee80211_hw *hw,
1871                                      unsigned int changed_flags,
1872                                      unsigned int *total_flags,
1873                                      int mc_count,
1874                                      struct dev_addr_list *mc_list)
1875 {
1876         struct rt2x00_dev *rt2x00dev = hw->priv;
1877         u32 reg;
1878
1879         /*
1880          * Mask off any flags we are going to ignore from
1881          * the total_flags field.
1882          */
1883         *total_flags &=
1884             FIF_ALLMULTI |
1885             FIF_FCSFAIL |
1886             FIF_PLCPFAIL |
1887             FIF_CONTROL |
1888             FIF_OTHER_BSS |
1889             FIF_PROMISC_IN_BSS;
1890
1891         /*
1892          * Apply some rules to the filters:
1893          * - Some filters imply different filters to be set.
1894          * - Some things we can't filter out at all.
1895          */
1896         if (mc_count)
1897                 *total_flags |= FIF_ALLMULTI;
1898         if (*total_flags & FIF_OTHER_BSS ||
1899             *total_flags & FIF_PROMISC_IN_BSS)
1900                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1901
1902         /*
1903          * Check if there is any work left for us.
1904          */
1905         if (rt2x00dev->packet_filter == *total_flags)
1906                 return;
1907         rt2x00dev->packet_filter = *total_flags;
1908
1909         /*
1910          * When in atomic context, reschedule and let rt2x00lib
1911          * call this function again.
1912          */
1913         if (in_atomic()) {
1914                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1915                 return;
1916         }
1917
1918         /*
1919          * Start configuration steps.
1920          * Note that the version error will always be dropped
1921          * and broadcast frames will always be accepted since
1922          * there is no filter for it at this time.
1923          */
1924         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
1925         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_CRC,
1926                            !(*total_flags & FIF_FCSFAIL));
1927         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_PHYSICAL,
1928                            !(*total_flags & FIF_PLCPFAIL));
1929         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_CONTROL,
1930                            !(*total_flags & FIF_CONTROL));
1931         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_NOT_TO_ME,
1932                            !(*total_flags & FIF_PROMISC_IN_BSS));
1933         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_TO_DS,
1934                            !(*total_flags & FIF_PROMISC_IN_BSS));
1935         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_VERSION_ERROR, 1);
1936         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_MULTICAST,
1937                            !(*total_flags & FIF_ALLMULTI));
1938         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_BROADCAST, 0);
1939         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_ACK_CTS,
1940                            !(*total_flags & FIF_CONTROL));
1941         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
1942 }
1943
1944 static int rt73usb_set_retry_limit(struct ieee80211_hw *hw,
1945                                    u32 short_retry, u32 long_retry)
1946 {
1947         struct rt2x00_dev *rt2x00dev = hw->priv;
1948         u32 reg;
1949
1950         rt73usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
1951         rt2x00_set_field32(&reg, TXRX_CSR4_LONG_RETRY_LIMIT, long_retry);
1952         rt2x00_set_field32(&reg, TXRX_CSR4_SHORT_RETRY_LIMIT, short_retry);
1953         rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
1954
1955         return 0;
1956 }
1957
1958 #if 0
1959 /*
1960  * Mac80211 demands get_tsf must be atomic.
1961  * This is not possible for rt73usb since all register access
1962  * functions require sleeping. Untill mac80211 no longer needs
1963  * get_tsf to be atomic, this function should be disabled.
1964  */
1965 static u64 rt73usb_get_tsf(struct ieee80211_hw *hw)
1966 {
1967         struct rt2x00_dev *rt2x00dev = hw->priv;
1968         u64 tsf;
1969         u32 reg;
1970
1971         rt73usb_register_read(rt2x00dev, TXRX_CSR13, &reg);
1972         tsf = (u64) rt2x00_get_field32(reg, TXRX_CSR13_HIGH_TSFTIMER) << 32;
1973         rt73usb_register_read(rt2x00dev, TXRX_CSR12, &reg);
1974         tsf |= rt2x00_get_field32(reg, TXRX_CSR12_LOW_TSFTIMER);
1975
1976         return tsf;
1977 }
1978 #else
1979 #define rt73usb_get_tsf NULL
1980 #endif
1981
1982 static int rt73usb_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
1983                                  struct ieee80211_tx_control *control)
1984 {
1985         struct rt2x00_dev *rt2x00dev = hw->priv;
1986         struct rt2x00_intf *intf = vif_to_intf(control->vif);
1987         struct skb_frame_desc *skbdesc;
1988         unsigned int beacon_base;
1989         unsigned int timeout;
1990
1991         if (unlikely(!intf->beacon))
1992                 return -ENOBUFS;
1993
1994         /*
1995          * Add the descriptor in front of the skb.
1996          */
1997         skb_push(skb, intf->beacon->queue->desc_size);
1998         memset(skb->data, 0, intf->beacon->queue->desc_size);
1999
2000         /*
2001          * Fill in skb descriptor
2002          */
2003         skbdesc = get_skb_frame_desc(skb);
2004         memset(skbdesc, 0, sizeof(*skbdesc));
2005         skbdesc->flags |= FRAME_DESC_DRIVER_GENERATED;
2006         skbdesc->data = skb->data + intf->beacon->queue->desc_size;
2007         skbdesc->data_len = skb->len - intf->beacon->queue->desc_size;
2008         skbdesc->desc = skb->data;
2009         skbdesc->desc_len = intf->beacon->queue->desc_size;
2010         skbdesc->entry = intf->beacon;
2011
2012         /*
2013          * mac80211 doesn't provide the control->queue variable
2014          * for beacons. Set our own queue identification so
2015          * it can be used during descriptor initialization.
2016          */
2017         control->queue = RT2X00_BCN_QUEUE_BEACON;
2018         rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
2019
2020         /*
2021          * Write entire beacon with descriptor to register,
2022          * and kick the beacon generator.
2023          */
2024         beacon_base = HW_BEACON_OFFSET(intf->beacon->entry_idx);
2025         timeout = REGISTER_TIMEOUT * (skb->len / sizeof(u32));
2026         rt2x00usb_vendor_request(rt2x00dev, USB_MULTI_WRITE,
2027                                  USB_VENDOR_REQUEST_OUT, beacon_base, 0,
2028                                  skb->data, skb->len, timeout);
2029         rt73usb_kick_tx_queue(rt2x00dev, control->queue);
2030
2031         return 0;
2032 }
2033
2034 static const struct ieee80211_ops rt73usb_mac80211_ops = {
2035         .tx                     = rt2x00mac_tx,
2036         .start                  = rt2x00mac_start,
2037         .stop                   = rt2x00mac_stop,
2038         .add_interface          = rt2x00mac_add_interface,
2039         .remove_interface       = rt2x00mac_remove_interface,
2040         .config                 = rt2x00mac_config,
2041         .config_interface       = rt2x00mac_config_interface,
2042         .configure_filter       = rt73usb_configure_filter,
2043         .get_stats              = rt2x00mac_get_stats,
2044         .set_retry_limit        = rt73usb_set_retry_limit,
2045         .bss_info_changed       = rt2x00mac_bss_info_changed,
2046         .conf_tx                = rt2x00mac_conf_tx,
2047         .get_tx_stats           = rt2x00mac_get_tx_stats,
2048         .get_tsf                = rt73usb_get_tsf,
2049         .beacon_update          = rt73usb_beacon_update,
2050 };
2051
2052 static const struct rt2x00lib_ops rt73usb_rt2x00_ops = {
2053         .probe_hw               = rt73usb_probe_hw,
2054         .get_firmware_name      = rt73usb_get_firmware_name,
2055         .load_firmware          = rt73usb_load_firmware,
2056         .initialize             = rt2x00usb_initialize,
2057         .uninitialize           = rt2x00usb_uninitialize,
2058         .init_rxentry           = rt2x00usb_init_rxentry,
2059         .init_txentry           = rt2x00usb_init_txentry,
2060         .set_device_state       = rt73usb_set_device_state,
2061         .link_stats             = rt73usb_link_stats,
2062         .reset_tuner            = rt73usb_reset_tuner,
2063         .link_tuner             = rt73usb_link_tuner,
2064         .led_brightness         = rt73usb_led_brightness,
2065         .write_tx_desc          = rt73usb_write_tx_desc,
2066         .write_tx_data          = rt2x00usb_write_tx_data,
2067         .get_tx_data_len        = rt73usb_get_tx_data_len,
2068         .kick_tx_queue          = rt73usb_kick_tx_queue,
2069         .fill_rxdone            = rt73usb_fill_rxdone,
2070         .config_intf            = rt73usb_config_intf,
2071         .config_preamble        = rt73usb_config_preamble,
2072         .config                 = rt73usb_config,
2073 };
2074
2075 static const struct data_queue_desc rt73usb_queue_rx = {
2076         .entry_num              = RX_ENTRIES,
2077         .data_size              = DATA_FRAME_SIZE,
2078         .desc_size              = RXD_DESC_SIZE,
2079         .priv_size              = sizeof(struct queue_entry_priv_usb_rx),
2080 };
2081
2082 static const struct data_queue_desc rt73usb_queue_tx = {
2083         .entry_num              = TX_ENTRIES,
2084         .data_size              = DATA_FRAME_SIZE,
2085         .desc_size              = TXD_DESC_SIZE,
2086         .priv_size              = sizeof(struct queue_entry_priv_usb_tx),
2087 };
2088
2089 static const struct data_queue_desc rt73usb_queue_bcn = {
2090         .entry_num              = 4 * BEACON_ENTRIES,
2091         .data_size              = MGMT_FRAME_SIZE,
2092         .desc_size              = TXINFO_SIZE,
2093         .priv_size              = sizeof(struct queue_entry_priv_usb_tx),
2094 };
2095
2096 static const struct rt2x00_ops rt73usb_ops = {
2097         .name           = KBUILD_MODNAME,
2098         .max_sta_intf   = 1,
2099         .max_ap_intf    = 4,
2100         .eeprom_size    = EEPROM_SIZE,
2101         .rf_size        = RF_SIZE,
2102         .rx             = &rt73usb_queue_rx,
2103         .tx             = &rt73usb_queue_tx,
2104         .bcn            = &rt73usb_queue_bcn,
2105         .lib            = &rt73usb_rt2x00_ops,
2106         .hw             = &rt73usb_mac80211_ops,
2107 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
2108         .debugfs        = &rt73usb_rt2x00debug,
2109 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
2110 };
2111
2112 /*
2113  * rt73usb module information.
2114  */
2115 static struct usb_device_id rt73usb_device_table[] = {
2116         /* AboCom */
2117         { USB_DEVICE(0x07b8, 0xb21d), USB_DEVICE_DATA(&rt73usb_ops) },
2118         /* Askey */
2119         { USB_DEVICE(0x1690, 0x0722), USB_DEVICE_DATA(&rt73usb_ops) },
2120         /* ASUS */
2121         { USB_DEVICE(0x0b05, 0x1723), USB_DEVICE_DATA(&rt73usb_ops) },
2122         { USB_DEVICE(0x0b05, 0x1724), USB_DEVICE_DATA(&rt73usb_ops) },
2123         /* Belkin */
2124         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt73usb_ops) },
2125         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt73usb_ops) },
2126         { USB_DEVICE(0x050d, 0x905b), USB_DEVICE_DATA(&rt73usb_ops) },
2127         { USB_DEVICE(0x050d, 0x905c), USB_DEVICE_DATA(&rt73usb_ops) },
2128         /* Billionton */
2129         { USB_DEVICE(0x1631, 0xc019), USB_DEVICE_DATA(&rt73usb_ops) },
2130         /* Buffalo */
2131         { USB_DEVICE(0x0411, 0x00f4), USB_DEVICE_DATA(&rt73usb_ops) },
2132         /* CNet */
2133         { USB_DEVICE(0x1371, 0x9022), USB_DEVICE_DATA(&rt73usb_ops) },
2134         { USB_DEVICE(0x1371, 0x9032), USB_DEVICE_DATA(&rt73usb_ops) },
2135         /* Conceptronic */
2136         { USB_DEVICE(0x14b2, 0x3c22), USB_DEVICE_DATA(&rt73usb_ops) },
2137         /* D-Link */
2138         { USB_DEVICE(0x07d1, 0x3c03), USB_DEVICE_DATA(&rt73usb_ops) },
2139         { USB_DEVICE(0x07d1, 0x3c04), USB_DEVICE_DATA(&rt73usb_ops) },
2140         /* Gemtek */
2141         { USB_DEVICE(0x15a9, 0x0004), USB_DEVICE_DATA(&rt73usb_ops) },
2142         /* Gigabyte */
2143         { USB_DEVICE(0x1044, 0x8008), USB_DEVICE_DATA(&rt73usb_ops) },
2144         { USB_DEVICE(0x1044, 0x800a), USB_DEVICE_DATA(&rt73usb_ops) },
2145         /* Huawei-3Com */
2146         { USB_DEVICE(0x1472, 0x0009), USB_DEVICE_DATA(&rt73usb_ops) },
2147         /* Hercules */
2148         { USB_DEVICE(0x06f8, 0xe010), USB_DEVICE_DATA(&rt73usb_ops) },
2149         { USB_DEVICE(0x06f8, 0xe020), USB_DEVICE_DATA(&rt73usb_ops) },
2150         /* Linksys */
2151         { USB_DEVICE(0x13b1, 0x0020), USB_DEVICE_DATA(&rt73usb_ops) },
2152         { USB_DEVICE(0x13b1, 0x0023), USB_DEVICE_DATA(&rt73usb_ops) },
2153         /* MSI */
2154         { USB_DEVICE(0x0db0, 0x6877), USB_DEVICE_DATA(&rt73usb_ops) },
2155         { USB_DEVICE(0x0db0, 0x6874), USB_DEVICE_DATA(&rt73usb_ops) },
2156         { USB_DEVICE(0x0db0, 0xa861), USB_DEVICE_DATA(&rt73usb_ops) },
2157         { USB_DEVICE(0x0db0, 0xa874), USB_DEVICE_DATA(&rt73usb_ops) },
2158         /* Ralink */
2159         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt73usb_ops) },
2160         { USB_DEVICE(0x148f, 0x2671), USB_DEVICE_DATA(&rt73usb_ops) },
2161         /* Qcom */
2162         { USB_DEVICE(0x18e8, 0x6196), USB_DEVICE_DATA(&rt73usb_ops) },
2163         { USB_DEVICE(0x18e8, 0x6229), USB_DEVICE_DATA(&rt73usb_ops) },
2164         { USB_DEVICE(0x18e8, 0x6238), USB_DEVICE_DATA(&rt73usb_ops) },
2165         /* Senao */
2166         { USB_DEVICE(0x1740, 0x7100), USB_DEVICE_DATA(&rt73usb_ops) },
2167         /* Sitecom */
2168         { USB_DEVICE(0x0df6, 0x9712), USB_DEVICE_DATA(&rt73usb_ops) },
2169         { USB_DEVICE(0x0df6, 0x90ac), USB_DEVICE_DATA(&rt73usb_ops) },
2170         /* Surecom */
2171         { USB_DEVICE(0x0769, 0x31f3), USB_DEVICE_DATA(&rt73usb_ops) },
2172         /* Planex */
2173         { USB_DEVICE(0x2019, 0xab01), USB_DEVICE_DATA(&rt73usb_ops) },
2174         { USB_DEVICE(0x2019, 0xab50), USB_DEVICE_DATA(&rt73usb_ops) },
2175         { 0, }
2176 };
2177
2178 MODULE_AUTHOR(DRV_PROJECT);
2179 MODULE_VERSION(DRV_VERSION);
2180 MODULE_DESCRIPTION("Ralink RT73 USB Wireless LAN driver.");
2181 MODULE_SUPPORTED_DEVICE("Ralink RT2571W & RT2671 USB chipset based cards");
2182 MODULE_DEVICE_TABLE(usb, rt73usb_device_table);
2183 MODULE_FIRMWARE(FIRMWARE_RT2571);
2184 MODULE_LICENSE("GPL");
2185
2186 static struct usb_driver rt73usb_driver = {
2187         .name           = KBUILD_MODNAME,
2188         .id_table       = rt73usb_device_table,
2189         .probe          = rt2x00usb_probe,
2190         .disconnect     = rt2x00usb_disconnect,
2191         .suspend        = rt2x00usb_suspend,
2192         .resume         = rt2x00usb_resume,
2193 };
2194
2195 static int __init rt73usb_init(void)
2196 {
2197         return usb_register(&rt73usb_driver);
2198 }
2199
2200 static void __exit rt73usb_exit(void)
2201 {
2202         usb_deregister(&rt73usb_driver);
2203 }
2204
2205 module_init(rt73usb_init);
2206 module_exit(rt73usb_exit);