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 (led->type == LED_TYPE_RADIO) {
 294                 rt2x00_set_field16(&led->rt2x00dev->led_mcu_reg,
 295                                    MCU_LEDCS_RADIO_STATUS, enabled);
 296
 297                 rt2x00usb_vendor_request_async(led->rt2x00dev, USB_LED_CONTROL,
 298                                                0, led->rt2x00dev->led_mcu_reg);
 299         } else if (led->type == LED_TYPE_ASSOC) {
 300                 rt2x00_set_field16(&led->rt2x00dev->led_mcu_reg,
 301                                    MCU_LEDCS_LINK_BG_STATUS, bg_mode);
 302                 rt2x00_set_field16(&led->rt2x00dev->led_mcu_reg,
 303                                    MCU_LEDCS_LINK_A_STATUS, a_mode);
 304
 305                 rt2x00usb_vendor_request_async(led->rt2x00dev, USB_LED_CONTROL,
 306                                                0, led->rt2x00dev->led_mcu_reg);
 307         } else if (led->type == LED_TYPE_QUALITY) {
 308                 /*
 309                  * The brightness is divided into 6 levels (0 - 5),
 310                  * this means we need to convert the brightness
 311                  * argument into the matching level within that range.
 312                  */
 313                 rt2x00usb_vendor_request_async(led->rt2x00dev, USB_LED_CONTROL,
 314                                                brightness / (LED_FULL / 6),
 315                                                led->rt2x00dev->led_mcu_reg);
 316         }
 317 }
 318 #else
 319 #define rt73usb_led_brightness  NULL
 320 #endif /* CONFIG_RT73USB_LEDS */
 321
 322 /*
 323  * Configuration handlers.
 324  */
 325 static void rt73usb_config_intf(struct rt2x00_dev *rt2x00dev,
 326                                 struct rt2x00_intf *intf,
 327                                 struct rt2x00intf_conf *conf,
 328                                 const unsigned int flags)
 329 {
 330         unsigned int beacon_base;
 331         u32 reg;
 332
 333         if (flags & CONFIG_UPDATE_TYPE) {
 334                 /*
 335                  * Clear current synchronisation setup.
 336                  * For the Beacon base registers we only need to clear
 337                  * the first byte since that byte contains the VALID and OWNER
 338                  * bits which (when set to 0) will invalidate the entire beacon.
 339                  */
 340                 beacon_base = HW_BEACON_OFFSET(intf->beacon->entry_idx);
 341                 rt73usb_register_write(rt2x00dev, TXRX_CSR9, 0);
 342                 rt73usb_register_write(rt2x00dev, beacon_base, 0);
 343
 344                 /*
 345                  * Enable synchronisation.
 346                  */
 347                 rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
 348                 rt2x00_set_field32(&reg, TXRX_CSR9_TSF_TICKING, 1);
 349                 rt2x00_set_field32(&reg, TXRX_CSR9_TBTT_ENABLE,
 350                                   (conf->sync == TSF_SYNC_BEACON));
 351                 rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 0);
 352                 rt2x00_set_field32(&reg, TXRX_CSR9_TSF_SYNC, conf->sync);
 353                 rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
 354         }
 355
 356         if (flags & CONFIG_UPDATE_MAC) {
 357                 reg = le32_to_cpu(conf->mac[1]);
 358                 rt2x00_set_field32(&reg, MAC_CSR3_UNICAST_TO_ME_MASK, 0xff);
 359                 conf->mac[1] = cpu_to_le32(reg);
 360
 361                 rt73usb_register_multiwrite(rt2x00dev, MAC_CSR2,
 362                                             conf->mac, sizeof(conf->mac));
 363         }
 364
 365         if (flags & CONFIG_UPDATE_BSSID) {
 366                 reg = le32_to_cpu(conf->bssid[1]);
 367                 rt2x00_set_field32(&reg, MAC_CSR5_BSS_ID_MASK, 3);
 368                 conf->bssid[1] = cpu_to_le32(reg);
 369
 370                 rt73usb_register_multiwrite(rt2x00dev, MAC_CSR4,
 371                                             conf->bssid, sizeof(conf->bssid));
 372         }
 373 }
 374
 375 static int rt73usb_config_preamble(struct rt2x00_dev *rt2x00dev,
 376                                    const int short_preamble,
 377                                    const int ack_timeout,
 378                                    const int ack_consume_time)
 379 {
 380         u32 reg;
 381
 382         /*
 383          * When in atomic context, we should let rt2x00lib
 384          * try this configuration again later.
 385          */
 386         if (in_atomic())
 387                 return -EAGAIN;
 388
 389         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 390         rt2x00_set_field32(&reg, TXRX_CSR0_RX_ACK_TIMEOUT, ack_timeout);
 391         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 392
 393         rt73usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
 394         rt2x00_set_field32(&reg, TXRX_CSR4_AUTORESPOND_PREAMBLE,
 395                            !!short_preamble);
 396         rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
 397
 398         return 0;
 399 }
 400
 401 static void rt73usb_config_phymode(struct rt2x00_dev *rt2x00dev,
 402                                    const int basic_rate_mask)
 403 {
 404         rt73usb_register_write(rt2x00dev, TXRX_CSR5, basic_rate_mask);
 405 }
 406
 407 static void rt73usb_config_channel(struct rt2x00_dev *rt2x00dev,
 408                                    struct rf_channel *rf, const int txpower)
 409 {
 410         u8 r3;
 411         u8 r94;
 412         u8 smart;
 413
 414         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 415         rt2x00_set_field32(&rf->rf4, RF4_FREQ_OFFSET, rt2x00dev->freq_offset);
 416
 417         smart = !(rt2x00_rf(&rt2x00dev->chip, RF5225) ||
 418                   rt2x00_rf(&rt2x00dev->chip, RF2527));
 419
 420         rt73usb_bbp_read(rt2x00dev, 3, &r3);
 421         rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, smart);
 422         rt73usb_bbp_write(rt2x00dev, 3, r3);
 423
 424         r94 = 6;
 425         if (txpower > MAX_TXPOWER && txpower <= (MAX_TXPOWER + r94))
 426                 r94 += txpower - MAX_TXPOWER;
 427         else if (txpower < MIN_TXPOWER && txpower >= (MIN_TXPOWER - r94))
 428                 r94 += txpower;
 429         rt73usb_bbp_write(rt2x00dev, 94, r94);
 430
 431         rt73usb_rf_write(rt2x00dev, 1, rf->rf1);
 432         rt73usb_rf_write(rt2x00dev, 2, rf->rf2);
 433         rt73usb_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004);
 434         rt73usb_rf_write(rt2x00dev, 4, rf->rf4);
 435
 436         rt73usb_rf_write(rt2x00dev, 1, rf->rf1);
 437         rt73usb_rf_write(rt2x00dev, 2, rf->rf2);
 438         rt73usb_rf_write(rt2x00dev, 3, rf->rf3 | 0x00000004);
 439         rt73usb_rf_write(rt2x00dev, 4, rf->rf4);
 440
 441         rt73usb_rf_write(rt2x00dev, 1, rf->rf1);
 442         rt73usb_rf_write(rt2x00dev, 2, rf->rf2);
 443         rt73usb_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004);
 444         rt73usb_rf_write(rt2x00dev, 4, rf->rf4);
 445
 446         udelay(10);
 447 }
 448
 449 static void rt73usb_config_txpower(struct rt2x00_dev *rt2x00dev,
 450                                    const int txpower)
 451 {
 452         struct rf_channel rf;
 453
 454         rt2x00_rf_read(rt2x00dev, 1, &rf.rf1);
 455         rt2x00_rf_read(rt2x00dev, 2, &rf.rf2);
 456         rt2x00_rf_read(rt2x00dev, 3, &rf.rf3);
 457         rt2x00_rf_read(rt2x00dev, 4, &rf.rf4);
 458
 459         rt73usb_config_channel(rt2x00dev, &rf, txpower);
 460 }
 461
 462 static void rt73usb_config_antenna_5x(struct rt2x00_dev *rt2x00dev,
 463                                       struct antenna_setup *ant)
 464 {
 465         u8 r3;
 466         u8 r4;
 467         u8 r77;
 468         u8 temp;
 469
 470         rt73usb_bbp_read(rt2x00dev, 3, &r3);
 471         rt73usb_bbp_read(rt2x00dev, 4, &r4);
 472         rt73usb_bbp_read(rt2x00dev, 77, &r77);
 473
 474         rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, 0);
 475
 476         /*
 477          * Configure the RX antenna.
 478          */
 479         switch (ant->rx) {
 480         case ANTENNA_HW_DIVERSITY:
 481                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 2);
 482                 temp = !test_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags)
 483                        && (rt2x00dev->curr_band != IEEE80211_BAND_5GHZ);
 484                 rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, temp);
 485                 break;
 486         case ANTENNA_A:
 487                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
 488                 rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, 0);
 489                 if (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ)
 490                         rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
 491                 else
 492                         rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
 493                 break;
 494         case ANTENNA_SW_DIVERSITY:
 495                 /*
 496                  * NOTE: We should never come here because rt2x00lib is
 497                  * supposed to catch this and send us the correct antenna
 498                  * explicitely. However we are nog going to bug about this.
 499                  * Instead, just default to antenna B.
 500                  */
 501         case ANTENNA_B:
 502                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
 503                 rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, 0);
 504                 if (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ)
 505                         rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
 506                 else
 507                         rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
 508                 break;
 509         }
 510
 511         rt73usb_bbp_write(rt2x00dev, 77, r77);
 512         rt73usb_bbp_write(rt2x00dev, 3, r3);
 513         rt73usb_bbp_write(rt2x00dev, 4, r4);
 514 }
 515
 516 static void rt73usb_config_antenna_2x(struct rt2x00_dev *rt2x00dev,
 517                                       struct antenna_setup *ant)
 518 {
 519         u8 r3;
 520         u8 r4;
 521         u8 r77;
 522
 523         rt73usb_bbp_read(rt2x00dev, 3, &r3);
 524         rt73usb_bbp_read(rt2x00dev, 4, &r4);
 525         rt73usb_bbp_read(rt2x00dev, 77, &r77);
 526
 527         rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, 0);
 528         rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END,
 529                           !test_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags));
 530
 531         /*
 532          * Configure the RX antenna.
 533          */
 534         switch (ant->rx) {
 535         case ANTENNA_HW_DIVERSITY:
 536                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 2);
 537                 break;
 538         case ANTENNA_A:
 539                 rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
 540                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
 541                 break;
 542         case ANTENNA_SW_DIVERSITY:
 543                 /*
 544                  * NOTE: We should never come here because rt2x00lib is
 545                  * supposed to catch this and send us the correct antenna
 546                  * explicitely. However we are nog going to bug about this.
 547                  * Instead, just default to antenna B.
 548                  */
 549         case ANTENNA_B:
 550                 rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
 551                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
 552                 break;
 553         }
 554
 555         rt73usb_bbp_write(rt2x00dev, 77, r77);
 556         rt73usb_bbp_write(rt2x00dev, 3, r3);
 557         rt73usb_bbp_write(rt2x00dev, 4, r4);
 558 }
 559
 560 struct antenna_sel {
 561         u8 word;
 562         /*
 563          * value[0] -> non-LNA
 564          * value[1] -> LNA
 565          */
 566         u8 value[2];
 567 };
 568
 569 static const struct antenna_sel antenna_sel_a[] = {
 570         { 96,  { 0x58, 0x78 } },
 571         { 104, { 0x38, 0x48 } },
 572         { 75,  { 0xfe, 0x80 } },
 573         { 86,  { 0xfe, 0x80 } },
 574         { 88,  { 0xfe, 0x80 } },
 575         { 35,  { 0x60, 0x60 } },
 576         { 97,  { 0x58, 0x58 } },
 577         { 98,  { 0x58, 0x58 } },
 578 };
 579
 580 static const struct antenna_sel antenna_sel_bg[] = {
 581         { 96,  { 0x48, 0x68 } },
 582         { 104, { 0x2c, 0x3c } },
 583         { 75,  { 0xfe, 0x80 } },
 584         { 86,  { 0xfe, 0x80 } },
 585         { 88,  { 0xfe, 0x80 } },
 586         { 35,  { 0x50, 0x50 } },
 587         { 97,  { 0x48, 0x48 } },
 588         { 98,  { 0x48, 0x48 } },
 589 };
 590
 591 static void rt73usb_config_antenna(struct rt2x00_dev *rt2x00dev,
 592                                    struct antenna_setup *ant)
 593 {
 594         const struct antenna_sel *sel;
 595         unsigned int lna;
 596         unsigned int i;
 597         u32 reg;
 598
 599         if (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ) {
 600                 sel = antenna_sel_a;
 601                 lna = test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags);
 602         } else {
 603                 sel = antenna_sel_bg;
 604                 lna = test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags);
 605         }
 606
 607         for (i = 0; i < ARRAY_SIZE(antenna_sel_a); i++)
 608                 rt73usb_bbp_write(rt2x00dev, sel[i].word, sel[i].value[lna]);
 609
 610         rt73usb_register_read(rt2x00dev, PHY_CSR0, &reg);
 611
 612         rt2x00_set_field32(&reg, PHY_CSR0_PA_PE_BG,
 613                            (rt2x00dev->curr_band == IEEE80211_BAND_2GHZ));
 614         rt2x00_set_field32(&reg, PHY_CSR0_PA_PE_A,
 615                            (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ));
 616
 617         rt73usb_register_write(rt2x00dev, PHY_CSR0, reg);
 618
 619         if (rt2x00_rf(&rt2x00dev->chip, RF5226) ||
 620             rt2x00_rf(&rt2x00dev->chip, RF5225))
 621                 rt73usb_config_antenna_5x(rt2x00dev, ant);
 622         else if (rt2x00_rf(&rt2x00dev->chip, RF2528) ||
 623                  rt2x00_rf(&rt2x00dev->chip, RF2527))
 624                 rt73usb_config_antenna_2x(rt2x00dev, ant);
 625 }
 626
 627 static void rt73usb_config_duration(struct rt2x00_dev *rt2x00dev,
 628                                     struct rt2x00lib_conf *libconf)
 629 {
 630         u32 reg;
 631
 632         rt73usb_register_read(rt2x00dev, MAC_CSR9, &reg);
 633         rt2x00_set_field32(&reg, MAC_CSR9_SLOT_TIME, libconf->slot_time);
 634         rt73usb_register_write(rt2x00dev, MAC_CSR9, reg);
 635
 636         rt73usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 637         rt2x00_set_field32(&reg, MAC_CSR8_SIFS, libconf->sifs);
 638         rt2x00_set_field32(&reg, MAC_CSR8_SIFS_AFTER_RX_OFDM, 3);
 639         rt2x00_set_field32(&reg, MAC_CSR8_EIFS, libconf->eifs);
 640         rt73usb_register_write(rt2x00dev, MAC_CSR8, reg);
 641
 642         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 643         rt2x00_set_field32(&reg, TXRX_CSR0_TSF_OFFSET, IEEE80211_HEADER);
 644         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 645
 646         rt73usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
 647         rt2x00_set_field32(&reg, TXRX_CSR4_AUTORESPOND_ENABLE, 1);
 648         rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
 649
 650         rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
 651         rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_INTERVAL,
 652                            libconf->conf->beacon_int * 16);
 653         rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
 654 }
 655
 656 static void rt73usb_config(struct rt2x00_dev *rt2x00dev,
 657                            struct rt2x00lib_conf *libconf,
 658                            const unsigned int flags)
 659 {
 660         if (flags & CONFIG_UPDATE_PHYMODE)
 661                 rt73usb_config_phymode(rt2x00dev, libconf->basic_rates);
 662         if (flags & CONFIG_UPDATE_CHANNEL)
 663                 rt73usb_config_channel(rt2x00dev, &libconf->rf,
 664                                        libconf->conf->power_level);
 665         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
 666                 rt73usb_config_txpower(rt2x00dev, libconf->conf->power_level);
 667         if (flags & CONFIG_UPDATE_ANTENNA)
 668                 rt73usb_config_antenna(rt2x00dev, &libconf->ant);
 669         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
 670                 rt73usb_config_duration(rt2x00dev, libconf);
 671 }
 672
 673 /*
 674  * Link tuning
 675  */
 676 static void rt73usb_link_stats(struct rt2x00_dev *rt2x00dev,
 677                                struct link_qual *qual)
 678 {
 679         u32 reg;
 680
 681         /*
 682          * Update FCS error count from register.
 683          */
 684         rt73usb_register_read(rt2x00dev, STA_CSR0, &reg);
 685         qual->rx_failed = rt2x00_get_field32(reg, STA_CSR0_FCS_ERROR);
 686
 687         /*
 688          * Update False CCA count from register.
 689          */
 690         rt73usb_register_read(rt2x00dev, STA_CSR1, &reg);
 691         qual->false_cca = rt2x00_get_field32(reg, STA_CSR1_FALSE_CCA_ERROR);
 692 }
 693
 694 static void rt73usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
 695 {
 696         rt73usb_bbp_write(rt2x00dev, 17, 0x20);
 697         rt2x00dev->link.vgc_level = 0x20;
 698 }
 699
 700 static void rt73usb_link_tuner(struct rt2x00_dev *rt2x00dev)
 701 {
 702         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
 703         u8 r17;
 704         u8 up_bound;
 705         u8 low_bound;
 706
 707         rt73usb_bbp_read(rt2x00dev, 17, &r17);
 708
 709         /*
 710          * Determine r17 bounds.
 711          */
 712         if (rt2x00dev->rx_status.band == IEEE80211_BAND_5GHZ) {
 713                 low_bound = 0x28;
 714                 up_bound = 0x48;
 715
 716                 if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags)) {
 717                         low_bound += 0x10;
 718                         up_bound += 0x10;
 719                 }
 720         } else {
 721                 if (rssi > -82) {
 722                         low_bound = 0x1c;
 723                         up_bound = 0x40;
 724                 } else if (rssi > -84) {
 725                         low_bound = 0x1c;
 726                         up_bound = 0x20;
 727                 } else {
 728                         low_bound = 0x1c;
 729                         up_bound = 0x1c;
 730                 }
 731
 732                 if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags)) {
 733                         low_bound += 0x14;
 734                         up_bound += 0x10;
 735                 }
 736         }
 737
 738         /*
 739          * If we are not associated, we should go straight to the
 740          * dynamic CCA tuning.
 741          */
 742         if (!rt2x00dev->intf_associated)
 743                 goto dynamic_cca_tune;
 744
 745         /*
 746          * Special big-R17 for very short distance
 747          */
 748         if (rssi > -35) {
 749                 if (r17 != 0x60)
 750                         rt73usb_bbp_write(rt2x00dev, 17, 0x60);
 751                 return;
 752         }
 753
 754         /*
 755          * Special big-R17 for short distance
 756          */
 757         if (rssi >= -58) {
 758                 if (r17 != up_bound)
 759                         rt73usb_bbp_write(rt2x00dev, 17, up_bound);
 760                 return;
 761         }
 762
 763         /*
 764          * Special big-R17 for middle-short distance
 765          */
 766         if (rssi >= -66) {
 767                 low_bound += 0x10;
 768                 if (r17 != low_bound)
 769                         rt73usb_bbp_write(rt2x00dev, 17, low_bound);
 770                 return;
 771         }
 772
 773         /*
 774          * Special mid-R17 for middle distance
 775          */
 776         if (rssi >= -74) {
 777                 if (r17 != (low_bound + 0x10))
 778                         rt73usb_bbp_write(rt2x00dev, 17, low_bound + 0x08);
 779                 return;
 780         }
 781
 782         /*
 783          * Special case: Change up_bound based on the rssi.
 784          * Lower up_bound when rssi is weaker then -74 dBm.
 785          */
 786         up_bound -= 2 * (-74 - rssi);
 787         if (low_bound > up_bound)
 788                 up_bound = low_bound;
 789
 790         if (r17 > up_bound) {
 791                 rt73usb_bbp_write(rt2x00dev, 17, up_bound);
 792                 return;
 793         }
 794
 795 dynamic_cca_tune:
 796
 797         /*
 798          * r17 does not yet exceed upper limit, continue and base
 799          * the r17 tuning on the false CCA count.
 800          */
 801         if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
 802                 r17 += 4;
 803                 if (r17 > up_bound)
 804                         r17 = up_bound;
 805                 rt73usb_bbp_write(rt2x00dev, 17, r17);
 806         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
 807                 r17 -= 4;
 808                 if (r17 < low_bound)
 809                         r17 = low_bound;
 810                 rt73usb_bbp_write(rt2x00dev, 17, r17);
 811         }
 812 }
 813
 814 /*
 815  * Firmware name function.
 816  */
 817 static char *rt73usb_get_firmware_name(struct rt2x00_dev *rt2x00dev)
 818 {
 819         return FIRMWARE_RT2571;
 820 }
 821
 822 /*
 823  * Initialization functions.
 824  */
 825 static int rt73usb_load_firmware(struct rt2x00_dev *rt2x00dev, void *data,
 826                                  const size_t len)
 827 {
 828         unsigned int i;
 829         int status;
 830         u32 reg;
 831         char *ptr = data;
 832         char *cache;
 833         int buflen;
 834         int timeout;
 835
 836         /*
 837          * Wait for stable hardware.
 838          */
 839         for (i = 0; i < 100; i++) {
 840                 rt73usb_register_read(rt2x00dev, MAC_CSR0, &reg);
 841                 if (reg)
 842                         break;
 843                 msleep(1);
 844         }
 845
 846         if (!reg) {
 847                 ERROR(rt2x00dev, "Unstable hardware.\n");
 848                 return -EBUSY;
 849         }
 850
 851         /*
 852          * Write firmware to device.
 853          * We setup a seperate cache for this action,
 854          * since we are going to write larger chunks of data
 855          * then normally used cache size.
 856          */
 857         cache = kmalloc(CSR_CACHE_SIZE_FIRMWARE, GFP_KERNEL);
 858         if (!cache) {
 859                 ERROR(rt2x00dev, "Failed to allocate firmware cache.\n");
 860                 return -ENOMEM;
 861         }
 862
 863         for (i = 0; i < len; i += CSR_CACHE_SIZE_FIRMWARE) {
 864                 buflen = min_t(int, len - i, CSR_CACHE_SIZE_FIRMWARE);
 865                 timeout = REGISTER_TIMEOUT * (buflen / sizeof(u32));
 866
 867                 memcpy(cache, ptr, buflen);
 868
 869                 rt2x00usb_vendor_request(rt2x00dev, USB_MULTI_WRITE,
 870                                          USB_VENDOR_REQUEST_OUT,
 871                                          FIRMWARE_IMAGE_BASE + i, 0,
 872                                          cache, buflen, timeout);
 873
 874                 ptr += buflen;
 875         }
 876
 877         kfree(cache);
 878
 879         /*
 880          * Send firmware request to device to load firmware,
 881          * we need to specify a long timeout time.
 882          */
 883         status = rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE,
 884                                              0, USB_MODE_FIRMWARE,
 885                                              REGISTER_TIMEOUT_FIRMWARE);
 886         if (status < 0) {
 887                 ERROR(rt2x00dev, "Failed to write Firmware to device.\n");
 888                 return status;
 889         }
 890
 891         return 0;
 892 }
 893
 894 static int rt73usb_init_registers(struct rt2x00_dev *rt2x00dev)
 895 {
 896         u32 reg;
 897
 898         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 899         rt2x00_set_field32(&reg, TXRX_CSR0_AUTO_TX_SEQ, 1);
 900         rt2x00_set_field32(&reg, TXRX_CSR0_DISABLE_RX, 0);
 901         rt2x00_set_field32(&reg, TXRX_CSR0_TX_WITHOUT_WAITING, 0);
 902         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 903
 904         rt73usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 905         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID0, 47); /* CCK Signal */
 906         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID0_VALID, 1);
 907         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID1, 30); /* Rssi */
 908         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID1_VALID, 1);
 909         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID2, 42); /* OFDM Rate */
 910         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID2_VALID, 1);
 911         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID3, 30); /* Rssi */
 912         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID3_VALID, 1);
 913         rt73usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 914
 915         /*
 916          * CCK TXD BBP registers
 917          */
 918         rt73usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 919         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID0, 13);
 920         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID0_VALID, 1);
 921         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID1, 12);
 922         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID1_VALID, 1);
 923         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID2, 11);
 924         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID2_VALID, 1);
 925         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID3, 10);
 926         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID3_VALID, 1);
 927         rt73usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 928
 929         /*
 930          * OFDM TXD BBP registers
 931          */
 932         rt73usb_register_read(rt2x00dev, TXRX_CSR3, &reg);
 933         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID0, 7);
 934         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID0_VALID, 1);
 935         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID1, 6);
 936         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID1_VALID, 1);
 937         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID2, 5);
 938         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID2_VALID, 1);
 939         rt73usb_register_write(rt2x00dev, TXRX_CSR3, reg);
 940
 941         rt73usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 942         rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_6MBS, 59);
 943         rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_9MBS, 53);
 944         rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_12MBS, 49);
 945         rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_18MBS, 46);
 946         rt73usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 947
 948         rt73usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 949         rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_24MBS, 44);
 950         rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_36MBS, 42);
 951         rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_48MBS, 42);
 952         rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_54MBS, 42);
 953         rt73usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 954
 955         rt73usb_register_write(rt2x00dev, TXRX_CSR15, 0x0000000f);
 956
 957         rt73usb_register_read(rt2x00dev, MAC_CSR6, &reg);
 958         rt2x00_set_field32(&reg, MAC_CSR6_MAX_FRAME_UNIT, 0xfff);
 959         rt73usb_register_write(rt2x00dev, MAC_CSR6, reg);
 960
 961         rt73usb_register_write(rt2x00dev, MAC_CSR10, 0x00000718);
 962
 963         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 964                 return -EBUSY;
 965
 966         rt73usb_register_write(rt2x00dev, MAC_CSR13, 0x00007f00);
 967
 968         rt73usb_register_read(rt2x00dev, MAC_CSR14, &reg);
 969         rt2x00_set_field32(&reg, MAC_CSR14_ON_PERIOD, 70);
 970         rt2x00_set_field32(&reg, MAC_CSR14_OFF_PERIOD, 30);
 971         rt73usb_register_write(rt2x00dev, MAC_CSR14, reg);
 972
 973         /*
 974          * Invalidate all Shared Keys (SEC_CSR0),
 975          * and clear the Shared key Cipher algorithms (SEC_CSR1 & SEC_CSR5)
 976          */
 977         rt73usb_register_write(rt2x00dev, SEC_CSR0, 0x00000000);
 978         rt73usb_register_write(rt2x00dev, SEC_CSR1, 0x00000000);
 979         rt73usb_register_write(rt2x00dev, SEC_CSR5, 0x00000000);
 980
 981         reg = 0x000023b0;
 982         if (rt2x00_rf(&rt2x00dev->chip, RF5225) ||
 983             rt2x00_rf(&rt2x00dev->chip, RF2527))
 984                 rt2x00_set_field32(&reg, PHY_CSR1_RF_RPI, 1);
 985         rt73usb_register_write(rt2x00dev, PHY_CSR1, reg);
 986
 987         rt73usb_register_write(rt2x00dev, PHY_CSR5, 0x00040a06);
 988         rt73usb_register_write(rt2x00dev, PHY_CSR6, 0x00080606);
 989         rt73usb_register_write(rt2x00dev, PHY_CSR7, 0x00000408);
 990
 991         rt73usb_register_read(rt2x00dev, AC_TXOP_CSR0, &reg);
 992         rt2x00_set_field32(&reg, AC_TXOP_CSR0_AC0_TX_OP, 0);
 993         rt2x00_set_field32(&reg, AC_TXOP_CSR0_AC1_TX_OP, 0);
 994         rt73usb_register_write(rt2x00dev, AC_TXOP_CSR0, reg);
 995
 996         rt73usb_register_read(rt2x00dev, AC_TXOP_CSR1, &reg);
 997         rt2x00_set_field32(&reg, AC_TXOP_CSR1_AC2_TX_OP, 192);
 998         rt2x00_set_field32(&reg, AC_TXOP_CSR1_AC3_TX_OP, 48);
 999         rt73usb_register_write(rt2x00dev, AC_TXOP_CSR1, reg);
1000
1001         rt73usb_register_read(rt2x00dev, MAC_CSR9, &reg);
1002         rt2x00_set_field32(&reg, MAC_CSR9_CW_SELECT, 0);
1003         rt73usb_register_write(rt2x00dev, MAC_CSR9, reg);
1004
1005         /*
1006          * Clear all beacons
1007          * For the Beacon base registers we only need to clear
1008          * the first byte since that byte contains the VALID and OWNER
1009          * bits which (when set to 0) will invalidate the entire beacon.
1010          */
1011         rt73usb_register_write(rt2x00dev, HW_BEACON_BASE0, 0);
1012         rt73usb_register_write(rt2x00dev, HW_BEACON_BASE1, 0);
1013         rt73usb_register_write(rt2x00dev, HW_BEACON_BASE2, 0);
1014         rt73usb_register_write(rt2x00dev, HW_BEACON_BASE3, 0);
1015
1016         /*
1017          * We must clear the error counters.
1018          * These registers are cleared on read,
1019          * so we may pass a useless variable to store the value.
1020          */
1021         rt73usb_register_read(rt2x00dev, STA_CSR0, &reg);
1022         rt73usb_register_read(rt2x00dev, STA_CSR1, &reg);
1023         rt73usb_register_read(rt2x00dev, STA_CSR2, &reg);
1024
1025         /*
1026          * Reset MAC and BBP registers.
1027          */
1028         rt73usb_register_read(rt2x00dev, MAC_CSR1, &reg);
1029         rt2x00_set_field32(&reg, MAC_CSR1_SOFT_RESET, 1);
1030         rt2x00_set_field32(&reg, MAC_CSR1_BBP_RESET, 1);
1031         rt73usb_register_write(rt2x00dev, MAC_CSR1, reg);
1032
1033         rt73usb_register_read(rt2x00dev, MAC_CSR1, &reg);
1034         rt2x00_set_field32(&reg, MAC_CSR1_SOFT_RESET, 0);
1035         rt2x00_set_field32(&reg, MAC_CSR1_BBP_RESET, 0);
1036         rt73usb_register_write(rt2x00dev, MAC_CSR1, reg);
1037
1038         rt73usb_register_read(rt2x00dev, MAC_CSR1, &reg);
1039         rt2x00_set_field32(&reg, MAC_CSR1_HOST_READY, 1);
1040         rt73usb_register_write(rt2x00dev, MAC_CSR1, reg);
1041
1042         return 0;
1043 }
1044
1045 static int rt73usb_init_bbp(struct rt2x00_dev *rt2x00dev)
1046 {
1047         unsigned int i;
1048         u16 eeprom;
1049         u8 reg_id;
1050         u8 value;
1051
1052         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
1053                 rt73usb_bbp_read(rt2x00dev, 0, &value);
1054                 if ((value != 0xff) && (value != 0x00))
1055                         goto continue_csr_init;
1056                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
1057                 udelay(REGISTER_BUSY_DELAY);
1058         }
1059
1060         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
1061         return -EACCES;
1062
1063 continue_csr_init:
1064         rt73usb_bbp_write(rt2x00dev, 3, 0x80);
1065         rt73usb_bbp_write(rt2x00dev, 15, 0x30);
1066         rt73usb_bbp_write(rt2x00dev, 21, 0xc8);
1067         rt73usb_bbp_write(rt2x00dev, 22, 0x38);
1068         rt73usb_bbp_write(rt2x00dev, 23, 0x06);
1069         rt73usb_bbp_write(rt2x00dev, 24, 0xfe);
1070         rt73usb_bbp_write(rt2x00dev, 25, 0x0a);
1071         rt73usb_bbp_write(rt2x00dev, 26, 0x0d);
1072         rt73usb_bbp_write(rt2x00dev, 32, 0x0b);
1073         rt73usb_bbp_write(rt2x00dev, 34, 0x12);
1074         rt73usb_bbp_write(rt2x00dev, 37, 0x07);
1075         rt73usb_bbp_write(rt2x00dev, 39, 0xf8);
1076         rt73usb_bbp_write(rt2x00dev, 41, 0x60);
1077         rt73usb_bbp_write(rt2x00dev, 53, 0x10);
1078         rt73usb_bbp_write(rt2x00dev, 54, 0x18);
1079         rt73usb_bbp_write(rt2x00dev, 60, 0x10);
1080         rt73usb_bbp_write(rt2x00dev, 61, 0x04);
1081         rt73usb_bbp_write(rt2x00dev, 62, 0x04);
1082         rt73usb_bbp_write(rt2x00dev, 75, 0xfe);
1083         rt73usb_bbp_write(rt2x00dev, 86, 0xfe);
1084         rt73usb_bbp_write(rt2x00dev, 88, 0xfe);
1085         rt73usb_bbp_write(rt2x00dev, 90, 0x0f);
1086         rt73usb_bbp_write(rt2x00dev, 99, 0x00);
1087         rt73usb_bbp_write(rt2x00dev, 102, 0x16);
1088         rt73usb_bbp_write(rt2x00dev, 107, 0x04);
1089
1090         DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
1091         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
1092                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
1093
1094                 if (eeprom != 0xffff && eeprom != 0x0000) {
1095                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
1096                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
1097                         DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
1098                               reg_id, value);
1099                         rt73usb_bbp_write(rt2x00dev, reg_id, value);
1100                 }
1101         }
1102         DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
1103
1104         return 0;
1105 }
1106
1107 /*
1108  * Device state switch handlers.
1109  */
1110 static void rt73usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
1111                               enum dev_state state)
1112 {
1113         u32 reg;
1114
1115         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
1116         rt2x00_set_field32(&reg, TXRX_CSR0_DISABLE_RX,
1117                            state == STATE_RADIO_RX_OFF);
1118         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
1119 }
1120
1121 static int rt73usb_enable_radio(struct rt2x00_dev *rt2x00dev)
1122 {
1123         /*
1124          * Initialize all registers.
1125          */
1126         if (rt73usb_init_registers(rt2x00dev) ||
1127             rt73usb_init_bbp(rt2x00dev)) {
1128                 ERROR(rt2x00dev, "Register initialization failed.\n");
1129                 return -EIO;
1130         }
1131
1132         return 0;
1133 }
1134
1135 static void rt73usb_disable_radio(struct rt2x00_dev *rt2x00dev)
1136 {
1137         rt73usb_register_write(rt2x00dev, MAC_CSR10, 0x00001818);
1138
1139         /*
1140          * Disable synchronisation.
1141          */
1142         rt73usb_register_write(rt2x00dev, TXRX_CSR9, 0);
1143
1144         rt2x00usb_disable_radio(rt2x00dev);
1145 }
1146
1147 static int rt73usb_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state)
1148 {
1149         u32 reg;
1150         unsigned int i;
1151         char put_to_sleep;
1152         char current_state;
1153
1154         put_to_sleep = (state != STATE_AWAKE);
1155
1156         rt73usb_register_read(rt2x00dev, MAC_CSR12, &reg);
1157         rt2x00_set_field32(&reg, MAC_CSR12_FORCE_WAKEUP, !put_to_sleep);
1158         rt2x00_set_field32(&reg, MAC_CSR12_PUT_TO_SLEEP, put_to_sleep);
1159         rt73usb_register_write(rt2x00dev, MAC_CSR12, reg);
1160
1161         /*
1162          * Device is not guaranteed to be in the requested state yet.
1163          * We must wait until the register indicates that the
1164          * device has entered the correct state.
1165          */
1166         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
1167                 rt73usb_register_read(rt2x00dev, MAC_CSR12, &reg);
1168                 current_state =
1169                     rt2x00_get_field32(reg, MAC_CSR12_BBP_CURRENT_STATE);
1170                 if (current_state == !put_to_sleep)
1171                         return 0;
1172                 msleep(10);
1173         }
1174
1175         NOTICE(rt2x00dev, "Device failed to enter state %d, "
1176                "current device state %d.\n", !put_to_sleep, current_state);
1177
1178         return -EBUSY;
1179 }
1180
1181 static int rt73usb_set_device_state(struct rt2x00_dev *rt2x00dev,
1182                                     enum dev_state state)
1183 {
1184         int retval = 0;
1185
1186         switch (state) {
1187         case STATE_RADIO_ON:
1188                 retval = rt73usb_enable_radio(rt2x00dev);
1189                 break;
1190         case STATE_RADIO_OFF:
1191                 rt73usb_disable_radio(rt2x00dev);
1192                 break;
1193         case STATE_RADIO_RX_ON:
1194         case STATE_RADIO_RX_ON_LINK:
1195                 rt73usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
1196                 break;
1197         case STATE_RADIO_RX_OFF:
1198         case STATE_RADIO_RX_OFF_LINK:
1199                 rt73usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
1200                 break;
1201         case STATE_DEEP_SLEEP:
1202         case STATE_SLEEP:
1203         case STATE_STANDBY:
1204         case STATE_AWAKE:
1205                 retval = rt73usb_set_state(rt2x00dev, state);
1206                 break;
1207         default:
1208                 retval = -ENOTSUPP;
1209                 break;
1210         }
1211
1212         return retval;
1213 }
1214
1215 /*
1216  * TX descriptor initialization
1217  */
1218 static void rt73usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1219                                     struct sk_buff *skb,
1220                                     struct txentry_desc *txdesc,
1221                                     struct ieee80211_tx_control *control)
1222 {
1223         struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
1224         __le32 *txd = skbdesc->desc;
1225         u32 word;
1226
1227         /*
1228          * Start writing the descriptor words.
1229          */
1230         rt2x00_desc_read(txd, 1, &word);
1231         rt2x00_set_field32(&word, TXD_W1_HOST_Q_ID, txdesc->queue);
1232         rt2x00_set_field32(&word, TXD_W1_AIFSN, txdesc->aifs);
1233         rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
1234         rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
1235         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1236         rt2x00_set_field32(&word, TXD_W1_HW_SEQUENCE, 1);
1237         rt2x00_desc_write(txd, 1, word);
1238
1239         rt2x00_desc_read(txd, 2, &word);
1240         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
1241         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
1242         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
1243         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
1244         rt2x00_desc_write(txd, 2, word);
1245
1246         rt2x00_desc_read(txd, 5, &word);
1247 /* XXX: removed for now
1248         rt2x00_set_field32(&word, TXD_W5_TX_POWER,
1249                            TXPOWER_TO_DEV(control->power_level));
1250  */
1251         rt2x00_set_field32(&word, TXD_W5_WAITING_DMA_DONE_INT, 1);
1252         rt2x00_desc_write(txd, 5, word);
1253
1254         rt2x00_desc_read(txd, 0, &word);
1255         rt2x00_set_field32(&word, TXD_W0_BURST,
1256                            test_bit(ENTRY_TXD_BURST, &txdesc->flags));
1257         rt2x00_set_field32(&word, TXD_W0_VALID, 1);
1258         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1259                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1260         rt2x00_set_field32(&word, TXD_W0_ACK,
1261                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1262         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1263                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1264         rt2x00_set_field32(&word, TXD_W0_OFDM,
1265                            test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
1266         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1267         rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
1268                            !!(control->flags &
1269                               IEEE80211_TXCTL_LONG_RETRY_LIMIT));
1270         rt2x00_set_field32(&word, TXD_W0_TKIP_MIC, 0);
1271         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skbdesc->data_len);
1272         rt2x00_set_field32(&word, TXD_W0_BURST2,
1273                            test_bit(ENTRY_TXD_BURST, &txdesc->flags));
1274         rt2x00_set_field32(&word, TXD_W0_CIPHER_ALG, CIPHER_NONE);
1275         rt2x00_desc_write(txd, 0, word);
1276 }
1277
1278 static int rt73usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1279                                    struct sk_buff *skb)
1280 {
1281         int length;
1282
1283         /*
1284          * The length _must_ be a multiple of 4,
1285          * but it must _not_ be a multiple of the USB packet size.
1286          */
1287         length = roundup(skb->len, 4);
1288         length += (4 * !(length % rt2x00dev->usb_maxpacket));
1289
1290         return length;
1291 }
1292
1293 /*
1294  * TX data initialization
1295  */
1296 static void rt73usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1297                                   const unsigned int queue)
1298 {
1299         u32 reg;
1300
1301         if (queue != RT2X00_BCN_QUEUE_BEACON)
1302                 return;
1303
1304         /*
1305          * For Wi-Fi faily generated beacons between participating stations.
1306          * Set TBTT phase adaptive adjustment step to 8us (default 16us)
1307          */
1308         rt73usb_register_write(rt2x00dev, TXRX_CSR10, 0x00001008);
1309
1310         rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
1311         if (!rt2x00_get_field32(reg, TXRX_CSR9_BEACON_GEN)) {
1312                 rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 1);
1313                 rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
1314         }
1315 }
1316
1317 /*
1318  * RX control handlers
1319  */
1320 static int rt73usb_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxd_w1)
1321 {
1322         u16 eeprom;
1323         u8 offset;
1324         u8 lna;
1325
1326         lna = rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_LNA);
1327         switch (lna) {
1328         case 3:
1329                 offset = 90;
1330                 break;
1331         case 2:
1332                 offset = 74;
1333                 break;
1334         case 1:
1335                 offset = 64;
1336                 break;
1337         default:
1338                 return 0;
1339         }
1340
1341         if (rt2x00dev->rx_status.band == IEEE80211_BAND_5GHZ) {
1342                 if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags)) {
1343                         if (lna == 3 || lna == 2)
1344                                 offset += 10;
1345                 } else {
1346                         if (lna == 3)
1347                                 offset += 6;
1348                         else if (lna == 2)
1349                                 offset += 8;
1350                 }
1351
1352                 rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom);
1353                 offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1);
1354         } else {
1355                 if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags))
1356                         offset += 14;
1357
1358                 rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom);
1359                 offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1);
1360         }
1361
1362         return rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_AGC) * 2 - offset;
1363 }
1364
1365 static void rt73usb_fill_rxdone(struct queue_entry *entry,
1366                                 struct rxdone_entry_desc *rxdesc)
1367 {
1368         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1369         __le32 *rxd = (__le32 *)entry->skb->data;
1370         struct ieee80211_hdr *hdr =
1371             (struct ieee80211_hdr *)entry->skb->data + entry->queue->desc_size;
1372         int header_size = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
1373         u32 word0;
1374         u32 word1;
1375
1376         rt2x00_desc_read(rxd, 0, &word0);
1377         rt2x00_desc_read(rxd, 1, &word1);
1378
1379         rxdesc->flags = 0;
1380         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1381                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1382
1383         /*
1384          * Obtain the status about this packet.
1385          */
1386         rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1387         rxdesc->rssi = rt73usb_agc_to_rssi(entry->queue->rt2x00dev, word1);
1388         rxdesc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1389         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1390         rxdesc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
1391
1392         /*
1393          * The data behind the ieee80211 header must be
1394          * aligned on a 4 byte boundary.
1395          */
1396         if (header_size % 4 == 0) {
1397                 skb_push(entry->skb, 2);
1398                 memmove(entry->skb->data, entry->skb->data + 2,
1399                         entry->skb->len - 2);
1400         }
1401
1402         /*
1403          * Set descriptor and data pointer.
1404          */
1405         skbdesc->data = entry->skb->data + entry->queue->desc_size;
1406         skbdesc->data_len = entry->queue->data_size;
1407         skbdesc->desc = entry->skb->data;
1408         skbdesc->desc_len = entry->queue->desc_size;
1409
1410         /*
1411          * Remove descriptor from skb buffer and trim the whole thing
1412          * down to only contain data.
1413          */
1414         skb_pull(entry->skb, skbdesc->desc_len);
1415         skb_trim(entry->skb, rxdesc->size);
1416 }
1417
1418 /*
1419  * Device probe functions.
1420  */
1421 static int rt73usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1422 {
1423         u16 word;
1424         u8 *mac;
1425         s8 value;
1426
1427         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1428
1429         /*
1430          * Start validation of the data that has been read.
1431          */
1432         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1433         if (!is_valid_ether_addr(mac)) {
1434                 DECLARE_MAC_BUF(macbuf);
1435
1436                 random_ether_addr(mac);
1437                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1438         }
1439
1440         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1441         if (word == 0xffff) {
1442                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1443                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1444                                    ANTENNA_B);
1445                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1446                                    ANTENNA_B);
1447                 rt2x00_set_field16(&word, EEPROM_ANTENNA_FRAME_TYPE, 0);
1448                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1449                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1450                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF5226);
1451                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1452                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1453         }
1454
1455         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1456         if (word == 0xffff) {
1457                 rt2x00_set_field16(&word, EEPROM_NIC_EXTERNAL_LNA, 0);
1458                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1459                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1460         }
1461
1462         rt2x00_eeprom_read(rt2x00dev, EEPROM_LED, &word);
1463         if (word == 0xffff) {
1464                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_RDY_G, 0);
1465                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_RDY_A, 0);
1466                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_ACT, 0);
1467                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_0, 0);
1468                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_1, 0);
1469                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_2, 0);
1470                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_3, 0);
1471                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_4, 0);
1472                 rt2x00_set_field16(&word, EEPROM_LED_LED_MODE,
1473                                    LED_MODE_DEFAULT);
1474                 rt2x00_eeprom_write(rt2x00dev, EEPROM_LED, word);
1475                 EEPROM(rt2x00dev, "Led: 0x%04x\n", word);
1476         }
1477
1478         rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &word);
1479         if (word == 0xffff) {
1480                 rt2x00_set_field16(&word, EEPROM_FREQ_OFFSET, 0);
1481                 rt2x00_set_field16(&word, EEPROM_FREQ_SEQ, 0);
1482                 rt2x00_eeprom_write(rt2x00dev, EEPROM_FREQ, word);
1483                 EEPROM(rt2x00dev, "Freq: 0x%04x\n", word);
1484         }
1485
1486         rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &word);
1487         if (word == 0xffff) {
1488                 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_1, 0);
1489                 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_2, 0);
1490                 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_BG, word);
1491                 EEPROM(rt2x00dev, "RSSI OFFSET BG: 0x%04x\n", word);
1492         } else {
1493                 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_BG_1);
1494                 if (value < -10 || value > 10)
1495                         rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_1, 0);
1496                 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_BG_2);
1497                 if (value < -10 || value > 10)
1498                         rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_2, 0);
1499                 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_BG, word);
1500         }
1501
1502         rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &word);
1503         if (word == 0xffff) {
1504                 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_1, 0);
1505                 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_2, 0);
1506                 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_A, word);
1507                 EEPROM(rt2x00dev, "RSSI OFFSET BG: 0x%04x\n", word);
1508         } else {
1509                 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_A_1);
1510                 if (value < -10 || value > 10)
1511                         rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_1, 0);
1512                 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_A_2);
1513                 if (value < -10 || value > 10)
1514                         rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_2, 0);
1515                 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_A, word);
1516         }
1517
1518         return 0;
1519 }
1520
1521 static int rt73usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1522 {
1523         u32 reg;
1524         u16 value;
1525         u16 eeprom;
1526
1527         /*
1528          * Read EEPROM word for configuration.
1529          */
1530         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1531
1532         /*
1533          * Identify RF chipset.
1534          */
1535         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1536         rt73usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1537         rt2x00_set_chip(rt2x00dev, RT2571, value, reg);
1538
1539         if (!rt2x00_check_rev(&rt2x00dev->chip, 0x25730)) {
1540                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1541                 return -ENODEV;
1542         }
1543
1544         if (!rt2x00_rf(&rt2x00dev->chip, RF5226) &&
1545             !rt2x00_rf(&rt2x00dev->chip, RF2528) &&
1546             !rt2x00_rf(&rt2x00dev->chip, RF5225) &&
1547             !rt2x00_rf(&rt2x00dev->chip, RF2527)) {
1548                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1549                 return -ENODEV;
1550         }
1551
1552         /*
1553          * Identify default antenna configuration.
1554          */
1555         rt2x00dev->default_ant.tx =
1556             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1557         rt2x00dev->default_ant.rx =
1558             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1559
1560         /*
1561          * Read the Frame type.
1562          */
1563         if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_FRAME_TYPE))
1564                 __set_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags);
1565
1566         /*
1567          * Read frequency offset.
1568          */
1569         rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &eeprom);
1570         rt2x00dev->freq_offset = rt2x00_get_field16(eeprom, EEPROM_FREQ_OFFSET);
1571
1572         /*
1573          * Read external LNA informations.
1574          */
1575         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1576
1577         if (rt2x00_get_field16(eeprom, EEPROM_NIC_EXTERNAL_LNA)) {
1578                 __set_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags);
1579                 __set_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags);
1580         }
1581
1582         /*
1583          * Store led settings, for correct led behaviour.
1584          */
1585 #ifdef CONFIG_RT73USB_LEDS
1586         rt2x00_eeprom_read(rt2x00dev, EEPROM_LED, &eeprom);
1587
1588         switch (value) {
1589         case LED_MODE_TXRX_ACTIVITY:
1590         case LED_MODE_ASUS:
1591         case LED_MODE_ALPHA:
1592         case LED_MODE_DEFAULT:
1593                 rt2x00dev->led_flags =
1594                     LED_SUPPORT_RADIO | LED_SUPPORT_ASSOC;
1595                 break;
1596         case LED_MODE_SIGNAL_STRENGTH:
1597                 rt2x00dev->led_flags =
1598                     LED_SUPPORT_RADIO | LED_SUPPORT_ASSOC |
1599                     LED_SUPPORT_QUALITY;
1600                 break;
1601         }
1602
1603         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_LED_MODE, value);
1604         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_0,
1605                            rt2x00_get_field16(eeprom,
1606                                               EEPROM_LED_POLARITY_GPIO_0));
1607         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_1,
1608                            rt2x00_get_field16(eeprom,
1609                                               EEPROM_LED_POLARITY_GPIO_1));
1610         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_2,
1611                            rt2x00_get_field16(eeprom,
1612                                               EEPROM_LED_POLARITY_GPIO_2));
1613         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_3,
1614                            rt2x00_get_field16(eeprom,
1615                                               EEPROM_LED_POLARITY_GPIO_3));
1616         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_4,
1617                            rt2x00_get_field16(eeprom,
1618                                               EEPROM_LED_POLARITY_GPIO_4));
1619         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_ACT,
1620                            rt2x00_get_field16(eeprom, EEPROM_LED_POLARITY_ACT));
1621         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_READY_BG,
1622                            rt2x00_get_field16(eeprom,
1623                                               EEPROM_LED_POLARITY_RDY_G));
1624         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_READY_A,
1625                            rt2x00_get_field16(eeprom,
1626                                               EEPROM_LED_POLARITY_RDY_A));
1627 #endif /* CONFIG_RT73USB_LEDS */
1628
1629         return 0;
1630 }
1631
1632 /*
1633  * RF value list for RF2528
1634  * Supports: 2.4 GHz
1635  */
1636 static const struct rf_channel rf_vals_bg_2528[] = {
1637         { 1,  0x00002c0c, 0x00000786, 0x00068255, 0x000fea0b },
1638         { 2,  0x00002c0c, 0x00000786, 0x00068255, 0x000fea1f },
1639         { 3,  0x00002c0c, 0x0000078a, 0x00068255, 0x000fea0b },
1640         { 4,  0x00002c0c, 0x0000078a, 0x00068255, 0x000fea1f },
1641         { 5,  0x00002c0c, 0x0000078e, 0x00068255, 0x000fea0b },
1642         { 6,  0x00002c0c, 0x0000078e, 0x00068255, 0x000fea1f },
1643         { 7,  0x00002c0c, 0x00000792, 0x00068255, 0x000fea0b },
1644         { 8,  0x00002c0c, 0x00000792, 0x00068255, 0x000fea1f },
1645         { 9,  0x00002c0c, 0x00000796, 0x00068255, 0x000fea0b },
1646         { 10, 0x00002c0c, 0x00000796, 0x00068255, 0x000fea1f },
1647         { 11, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea0b },
1648         { 12, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea1f },
1649         { 13, 0x00002c0c, 0x0000079e, 0x00068255, 0x000fea0b },
1650         { 14, 0x00002c0c, 0x000007a2, 0x00068255, 0x000fea13 },
1651 };
1652
1653 /*
1654  * RF value list for RF5226
1655  * Supports: 2.4 GHz & 5.2 GHz
1656  */
1657 static const struct rf_channel rf_vals_5226[] = {
1658         { 1,  0x00002c0c, 0x00000786, 0x00068255, 0x000fea0b },
1659         { 2,  0x00002c0c, 0x00000786, 0x00068255, 0x000fea1f },
1660         { 3,  0x00002c0c, 0x0000078a, 0x00068255, 0x000fea0b },
1661         { 4,  0x00002c0c, 0x0000078a, 0x00068255, 0x000fea1f },
1662         { 5,  0x00002c0c, 0x0000078e, 0x00068255, 0x000fea0b },
1663         { 6,  0x00002c0c, 0x0000078e, 0x00068255, 0x000fea1f },
1664         { 7,  0x00002c0c, 0x00000792, 0x00068255, 0x000fea0b },
1665         { 8,  0x00002c0c, 0x00000792, 0x00068255, 0x000fea1f },
1666         { 9,  0x00002c0c, 0x00000796, 0x00068255, 0x000fea0b },
1667         { 10, 0x00002c0c, 0x00000796, 0x00068255, 0x000fea1f },
1668         { 11, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea0b },
1669         { 12, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea1f },
1670         { 13, 0x00002c0c, 0x0000079e, 0x00068255, 0x000fea0b },
1671         { 14, 0x00002c0c, 0x000007a2, 0x00068255, 0x000fea13 },
1672
1673         /* 802.11 UNI / HyperLan 2 */
1674         { 36, 0x00002c0c, 0x0000099a, 0x00098255, 0x000fea23 },
1675         { 40, 0x00002c0c, 0x000009a2, 0x00098255, 0x000fea03 },
1676         { 44, 0x00002c0c, 0x000009a6, 0x00098255, 0x000fea0b },
1677         { 48, 0x00002c0c, 0x000009aa, 0x00098255, 0x000fea13 },
1678         { 52, 0x00002c0c, 0x000009ae, 0x00098255, 0x000fea1b },
1679         { 56, 0x00002c0c, 0x000009b2, 0x00098255, 0x000fea23 },
1680         { 60, 0x00002c0c, 0x000009ba, 0x00098255, 0x000fea03 },
1681         { 64, 0x00002c0c, 0x000009be, 0x00098255, 0x000fea0b },
1682
1683         /* 802.11 HyperLan 2 */
1684         { 100, 0x00002c0c, 0x00000a2a, 0x000b8255, 0x000fea03 },
1685         { 104, 0x00002c0c, 0x00000a2e, 0x000b8255, 0x000fea0b },
1686         { 108, 0x00002c0c, 0x00000a32, 0x000b8255, 0x000fea13 },
1687         { 112, 0x00002c0c, 0x00000a36, 0x000b8255, 0x000fea1b },
1688         { 116, 0x00002c0c, 0x00000a3a, 0x000b8255, 0x000fea23 },
1689         { 120, 0x00002c0c, 0x00000a82, 0x000b8255, 0x000fea03 },
1690         { 124, 0x00002c0c, 0x00000a86, 0x000b8255, 0x000fea0b },
1691         { 128, 0x00002c0c, 0x00000a8a, 0x000b8255, 0x000fea13 },
1692         { 132, 0x00002c0c, 0x00000a8e, 0x000b8255, 0x000fea1b },
1693         { 136, 0x00002c0c, 0x00000a92, 0x000b8255, 0x000fea23 },
1694
1695         /* 802.11 UNII */
1696         { 140, 0x00002c0c, 0x00000a9a, 0x000b8255, 0x000fea03 },
1697         { 149, 0x00002c0c, 0x00000aa2, 0x000b8255, 0x000fea1f },
1698         { 153, 0x00002c0c, 0x00000aa6, 0x000b8255, 0x000fea27 },
1699         { 157, 0x00002c0c, 0x00000aae, 0x000b8255, 0x000fea07 },
1700         { 161, 0x00002c0c, 0x00000ab2, 0x000b8255, 0x000fea0f },
1701         { 165, 0x00002c0c, 0x00000ab6, 0x000b8255, 0x000fea17 },
1702
1703         /* MMAC(Japan)J52 ch 34,38,42,46 */
1704         { 34, 0x00002c0c, 0x0008099a, 0x000da255, 0x000d3a0b },
1705         { 38, 0x00002c0c, 0x0008099e, 0x000da255, 0x000d3a13 },
1706         { 42, 0x00002c0c, 0x000809a2, 0x000da255, 0x000d3a1b },
1707         { 46, 0x00002c0c, 0x000809a6, 0x000da255, 0x000d3a23 },
1708 };
1709
1710 /*
1711  * RF value list for RF5225 & RF2527
1712  * Supports: 2.4 GHz & 5.2 GHz
1713  */
1714 static const struct rf_channel rf_vals_5225_2527[] = {
1715         { 1,  0x00002ccc, 0x00004786, 0x00068455, 0x000ffa0b },
1716         { 2,  0x00002ccc, 0x00004786, 0x00068455, 0x000ffa1f },
1717         { 3,  0x00002ccc, 0x0000478a, 0x00068455, 0x000ffa0b },
1718         { 4,  0x00002ccc, 0x0000478a, 0x00068455, 0x000ffa1f },
1719         { 5,  0x00002ccc, 0x0000478e, 0x00068455, 0x000ffa0b },
1720         { 6,  0x00002ccc, 0x0000478e, 0x00068455, 0x000ffa1f },
1721         { 7,  0x00002ccc, 0x00004792, 0x00068455, 0x000ffa0b },
1722         { 8,  0x00002ccc, 0x00004792, 0x00068455, 0x000ffa1f },
1723         { 9,  0x00002ccc, 0x00004796, 0x00068455, 0x000ffa0b },
1724         { 10, 0x00002ccc, 0x00004796, 0x00068455, 0x000ffa1f },
1725         { 11, 0x00002ccc, 0x0000479a, 0x00068455, 0x000ffa0b },
1726         { 12, 0x00002ccc, 0x0000479a, 0x00068455, 0x000ffa1f },
1727         { 13, 0x00002ccc, 0x0000479e, 0x00068455, 0x000ffa0b },
1728         { 14, 0x00002ccc, 0x000047a2, 0x00068455, 0x000ffa13 },
1729
1730         /* 802.11 UNI / HyperLan 2 */
1731         { 36, 0x00002ccc, 0x0000499a, 0x0009be55, 0x000ffa23 },
1732         { 40, 0x00002ccc, 0x000049a2, 0x0009be55, 0x000ffa03 },
1733         { 44, 0x00002ccc, 0x000049a6, 0x0009be55, 0x000ffa0b },
1734         { 48, 0x00002ccc, 0x000049aa, 0x0009be55, 0x000ffa13 },
1735         { 52, 0x00002ccc, 0x000049ae, 0x0009ae55, 0x000ffa1b },
1736         { 56, 0x00002ccc, 0x000049b2, 0x0009ae55, 0x000ffa23 },
1737         { 60, 0x00002ccc, 0x000049ba, 0x0009ae55, 0x000ffa03 },
1738         { 64, 0x00002ccc, 0x000049be, 0x0009ae55, 0x000ffa0b },
1739
1740         /* 802.11 HyperLan 2 */
1741         { 100, 0x00002ccc, 0x00004a2a, 0x000bae55, 0x000ffa03 },
1742         { 104, 0x00002ccc, 0x00004a2e, 0x000bae55, 0x000ffa0b },
1743         { 108, 0x00002ccc, 0x00004a32, 0x000bae55, 0x000ffa13 },
1744         { 112, 0x00002ccc, 0x00004a36, 0x000bae55, 0x000ffa1b },
1745         { 116, 0x00002ccc, 0x00004a3a, 0x000bbe55, 0x000ffa23 },
1746         { 120, 0x00002ccc, 0x00004a82, 0x000bbe55, 0x000ffa03 },
1747         { 124, 0x00002ccc, 0x00004a86, 0x000bbe55, 0x000ffa0b },
1748         { 128, 0x00002ccc, 0x00004a8a, 0x000bbe55, 0x000ffa13 },
1749         { 132, 0x00002ccc, 0x00004a8e, 0x000bbe55, 0x000ffa1b },
1750         { 136, 0x00002ccc, 0x00004a92, 0x000bbe55, 0x000ffa23 },
1751
1752         /* 802.11 UNII */
1753         { 140, 0x00002ccc, 0x00004a9a, 0x000bbe55, 0x000ffa03 },
1754         { 149, 0x00002ccc, 0x00004aa2, 0x000bbe55, 0x000ffa1f },
1755         { 153, 0x00002ccc, 0x00004aa6, 0x000bbe55, 0x000ffa27 },
1756         { 157, 0x00002ccc, 0x00004aae, 0x000bbe55, 0x000ffa07 },
1757         { 161, 0x00002ccc, 0x00004ab2, 0x000bbe55, 0x000ffa0f },
1758         { 165, 0x00002ccc, 0x00004ab6, 0x000bbe55, 0x000ffa17 },
1759
1760         /* MMAC(Japan)J52 ch 34,38,42,46 */
1761         { 34, 0x00002ccc, 0x0000499a, 0x0009be55, 0x000ffa0b },
1762         { 38, 0x00002ccc, 0x0000499e, 0x0009be55, 0x000ffa13 },
1763         { 42, 0x00002ccc, 0x000049a2, 0x0009be55, 0x000ffa1b },
1764         { 46, 0x00002ccc, 0x000049a6, 0x0009be55, 0x000ffa23 },
1765 };
1766
1767
1768 static void rt73usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1769 {
1770         struct hw_mode_spec *spec = &rt2x00dev->spec;
1771         u8 *txpower;
1772         unsigned int i;
1773
1774         /*
1775          * Initialize all hw fields.
1776          */
1777         rt2x00dev->hw->flags =
1778             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1779             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1780         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1781         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1782         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1783         rt2x00dev->hw->queues = 4;
1784
1785         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1786         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1787                                 rt2x00_eeprom_addr(rt2x00dev,
1788                                                    EEPROM_MAC_ADDR_0));
1789
1790         /*
1791          * Convert tx_power array in eeprom.
1792          */
1793         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_G_START);
1794         for (i = 0; i < 14; i++)
1795                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1796
1797         /*
1798          * Initialize hw_mode information.
1799          */
1800         spec->num_modes = 2;
1801         spec->num_rates = 12;
1802         spec->tx_power_a = NULL;
1803         spec->tx_power_bg = txpower;
1804         spec->tx_power_default = DEFAULT_TXPOWER;
1805
1806         if (rt2x00_rf(&rt2x00dev->chip, RF2528)) {
1807                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2528);
1808                 spec->channels = rf_vals_bg_2528;
1809         } else if (rt2x00_rf(&rt2x00dev->chip, RF5226)) {
1810                 spec->num_channels = ARRAY_SIZE(rf_vals_5226);
1811                 spec->channels = rf_vals_5226;
1812         } else if (rt2x00_rf(&rt2x00dev->chip, RF2527)) {
1813                 spec->num_channels = 14;
1814                 spec->channels = rf_vals_5225_2527;
1815         } else if (rt2x00_rf(&rt2x00dev->chip, RF5225)) {
1816                 spec->num_channels = ARRAY_SIZE(rf_vals_5225_2527);
1817                 spec->channels = rf_vals_5225_2527;
1818         }
1819
1820         if (rt2x00_rf(&rt2x00dev->chip, RF5225) ||
1821             rt2x00_rf(&rt2x00dev->chip, RF5226)) {
1822                 spec->num_modes = 3;
1823
1824                 txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_A_START);
1825                 for (i = 0; i < 14; i++)
1826                         txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1827
1828                 spec->tx_power_a = txpower;
1829         }
1830 }
1831
1832 static int rt73usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1833 {
1834         int retval;
1835
1836         /*
1837          * Allocate eeprom data.
1838          */
1839         retval = rt73usb_validate_eeprom(rt2x00dev);
1840         if (retval)
1841                 return retval;
1842
1843         retval = rt73usb_init_eeprom(rt2x00dev);
1844         if (retval)
1845                 return retval;
1846
1847         /*
1848          * Initialize hw specifications.
1849          */
1850         rt73usb_probe_hw_mode(rt2x00dev);
1851
1852         /*
1853          * This device requires firmware.
1854          */
1855         __set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
1856         __set_bit(DRIVER_REQUIRE_FIRMWARE_CRC_ITU_T, &rt2x00dev->flags);
1857
1858         /*
1859          * Set the rssi offset.
1860          */
1861         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1862
1863         return 0;
1864 }
1865
1866 /*
1867  * IEEE80211 stack callback functions.
1868  */
1869 static void rt73usb_configure_filter(struct ieee80211_hw *hw,
1870                                      unsigned int changed_flags,
1871                                      unsigned int *total_flags,
1872                                      int mc_count,
1873                                      struct dev_addr_list *mc_list)
1874 {
1875         struct rt2x00_dev *rt2x00dev = hw->priv;
1876         u32 reg;
1877
1878         /*
1879          * Mask off any flags we are going to ignore from
1880          * the total_flags field.
1881          */
1882         *total_flags &=
1883             FIF_ALLMULTI |
1884             FIF_FCSFAIL |
1885             FIF_PLCPFAIL |
1886             FIF_CONTROL |
1887             FIF_OTHER_BSS |
1888             FIF_PROMISC_IN_BSS;
1889
1890         /*
1891          * Apply some rules to the filters:
1892          * - Some filters imply different filters to be set.
1893          * - Some things we can't filter out at all.
1894          */
1895         if (mc_count)
1896                 *total_flags |= FIF_ALLMULTI;
1897         if (*total_flags & FIF_OTHER_BSS ||
1898             *total_flags & FIF_PROMISC_IN_BSS)
1899                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1900
1901         /*
1902          * Check if there is any work left for us.
1903          */
1904         if (rt2x00dev->packet_filter == *total_flags)
1905                 return;
1906         rt2x00dev->packet_filter = *total_flags;
1907
1908         /*
1909          * When in atomic context, reschedule and let rt2x00lib
1910          * call this function again.
1911          */
1912         if (in_atomic()) {
1913                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1914                 return;
1915         }
1916
1917         /*
1918          * Start configuration steps.
1919          * Note that the version error will always be dropped
1920          * and broadcast frames will always be accepted since
1921          * there is no filter for it at this time.
1922          */
1923         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
1924         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_CRC,
1925                            !(*total_flags & FIF_FCSFAIL));
1926         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_PHYSICAL,
1927                            !(*total_flags & FIF_PLCPFAIL));
1928         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_CONTROL,
1929                            !(*total_flags & FIF_CONTROL));
1930         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_NOT_TO_ME,
1931                            !(*total_flags & FIF_PROMISC_IN_BSS));
1932         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_TO_DS,
1933                            !(*total_flags & FIF_PROMISC_IN_BSS));
1934         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_VERSION_ERROR, 1);
1935         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_MULTICAST,
1936                            !(*total_flags & FIF_ALLMULTI));
1937         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_BROADCAST, 0);
1938         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_ACK_CTS, 1);
1939         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
1940 }
1941
1942 static int rt73usb_set_retry_limit(struct ieee80211_hw *hw,
1943                                    u32 short_retry, u32 long_retry)
1944 {
1945         struct rt2x00_dev *rt2x00dev = hw->priv;
1946         u32 reg;
1947
1948         rt73usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
1949         rt2x00_set_field32(&reg, TXRX_CSR4_LONG_RETRY_LIMIT, long_retry);
1950         rt2x00_set_field32(&reg, TXRX_CSR4_SHORT_RETRY_LIMIT, short_retry);
1951         rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
1952
1953         return 0;
1954 }
1955
1956 #if 0
1957 /*
1958  * Mac80211 demands get_tsf must be atomic.
1959  * This is not possible for rt73usb since all register access
1960  * functions require sleeping. Untill mac80211 no longer needs
1961  * get_tsf to be atomic, this function should be disabled.
1962  */
1963 static u64 rt73usb_get_tsf(struct ieee80211_hw *hw)
1964 {
1965         struct rt2x00_dev *rt2x00dev = hw->priv;
1966         u64 tsf;
1967         u32 reg;
1968
1969         rt73usb_register_read(rt2x00dev, TXRX_CSR13, &reg);
1970         tsf = (u64) rt2x00_get_field32(reg, TXRX_CSR13_HIGH_TSFTIMER) << 32;
1971         rt73usb_register_read(rt2x00dev, TXRX_CSR12, &reg);
1972         tsf |= rt2x00_get_field32(reg, TXRX_CSR12_LOW_TSFTIMER);
1973
1974         return tsf;
1975 }
1976 #else
1977 #define rt73usb_get_tsf NULL
1978 #endif
1979
1980 static void rt73usb_reset_tsf(struct ieee80211_hw *hw)
1981 {
1982         struct rt2x00_dev *rt2x00dev = hw->priv;
1983
1984         rt73usb_register_write(rt2x00dev, TXRX_CSR12, 0);
1985         rt73usb_register_write(rt2x00dev, TXRX_CSR13, 0);
1986 }
1987
1988 static int rt73usb_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
1989                                  struct ieee80211_tx_control *control)
1990 {
1991         struct rt2x00_dev *rt2x00dev = hw->priv;
1992         struct rt2x00_intf *intf = vif_to_intf(control->vif);
1993         struct skb_frame_desc *skbdesc;
1994         unsigned int beacon_base;
1995         unsigned int timeout;
1996
1997         if (unlikely(!intf->beacon))
1998                 return -ENOBUFS;
1999
2000         /*
2001          * Add the descriptor in front of the skb.
2002          */
2003         skb_push(skb, intf->beacon->queue->desc_size);
2004         memset(skb->data, 0, intf->beacon->queue->desc_size);
2005
2006         /*
2007          * Fill in skb descriptor
2008          */
2009         skbdesc = get_skb_frame_desc(skb);
2010         memset(skbdesc, 0, sizeof(*skbdesc));
2011         skbdesc->data = skb->data + intf->beacon->queue->desc_size;
2012         skbdesc->data_len = skb->len - intf->beacon->queue->desc_size;
2013         skbdesc->desc = skb->data;
2014         skbdesc->desc_len = intf->beacon->queue->desc_size;
2015         skbdesc->entry = intf->beacon;
2016
2017         /*
2018          * mac80211 doesn't provide the control->queue variable
2019          * for beacons. Set our own queue identification so
2020          * it can be used during descriptor initialization.
2021          */
2022         control->queue = RT2X00_BCN_QUEUE_BEACON;
2023         rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
2024
2025         /*
2026          * Write entire beacon with descriptor to register,
2027          * and kick the beacon generator.
2028          */
2029         beacon_base = HW_BEACON_OFFSET(intf->beacon->entry_idx);
2030         timeout = REGISTER_TIMEOUT * (skb->len / sizeof(u32));
2031         rt2x00usb_vendor_request(rt2x00dev, USB_MULTI_WRITE,
2032                                  USB_VENDOR_REQUEST_OUT, beacon_base, 0,
2033                                  skb->data, skb->len, timeout);
2034         rt73usb_kick_tx_queue(rt2x00dev, control->queue);
2035
2036         return 0;
2037 }
2038
2039 static const struct ieee80211_ops rt73usb_mac80211_ops = {
2040         .tx                     = rt2x00mac_tx,
2041         .start                  = rt2x00mac_start,
2042         .stop                   = rt2x00mac_stop,
2043         .add_interface          = rt2x00mac_add_interface,
2044         .remove_interface       = rt2x00mac_remove_interface,
2045         .config                 = rt2x00mac_config,
2046         .config_interface       = rt2x00mac_config_interface,
2047         .configure_filter       = rt73usb_configure_filter,
2048         .get_stats              = rt2x00mac_get_stats,
2049         .set_retry_limit        = rt73usb_set_retry_limit,
2050         .bss_info_changed       = rt2x00mac_bss_info_changed,
2051         .conf_tx                = rt2x00mac_conf_tx,
2052         .get_tx_stats           = rt2x00mac_get_tx_stats,
2053         .get_tsf                = rt73usb_get_tsf,
2054         .reset_tsf              = rt73usb_reset_tsf,
2055         .beacon_update          = rt73usb_beacon_update,
2056 };
2057
2058 static const struct rt2x00lib_ops rt73usb_rt2x00_ops = {
2059         .probe_hw               = rt73usb_probe_hw,
2060         .get_firmware_name      = rt73usb_get_firmware_name,
2061         .load_firmware          = rt73usb_load_firmware,
2062         .initialize             = rt2x00usb_initialize,
2063         .uninitialize           = rt2x00usb_uninitialize,
2064         .init_rxentry           = rt2x00usb_init_rxentry,
2065         .init_txentry           = rt2x00usb_init_txentry,
2066         .set_device_state       = rt73usb_set_device_state,
2067         .link_stats             = rt73usb_link_stats,
2068         .reset_tuner            = rt73usb_reset_tuner,
2069         .link_tuner             = rt73usb_link_tuner,
2070         .led_brightness         = rt73usb_led_brightness,
2071         .write_tx_desc          = rt73usb_write_tx_desc,
2072         .write_tx_data          = rt2x00usb_write_tx_data,
2073         .get_tx_data_len        = rt73usb_get_tx_data_len,
2074         .kick_tx_queue          = rt73usb_kick_tx_queue,
2075         .fill_rxdone            = rt73usb_fill_rxdone,
2076         .config_intf            = rt73usb_config_intf,
2077         .config_preamble        = rt73usb_config_preamble,
2078         .config                 = rt73usb_config,
2079 };
2080
2081 static const struct data_queue_desc rt73usb_queue_rx = {
2082         .entry_num              = RX_ENTRIES,
2083         .data_size              = DATA_FRAME_SIZE,
2084         .desc_size              = RXD_DESC_SIZE,
2085         .priv_size              = sizeof(struct queue_entry_priv_usb_rx),
2086 };
2087
2088 static const struct data_queue_desc rt73usb_queue_tx = {
2089         .entry_num              = TX_ENTRIES,
2090         .data_size              = DATA_FRAME_SIZE,
2091         .desc_size              = TXD_DESC_SIZE,
2092         .priv_size              = sizeof(struct queue_entry_priv_usb_tx),
2093 };
2094
2095 static const struct data_queue_desc rt73usb_queue_bcn = {
2096         .entry_num              = 4 * BEACON_ENTRIES,
2097         .data_size              = MGMT_FRAME_SIZE,
2098         .desc_size              = TXINFO_SIZE,
2099         .priv_size              = sizeof(struct queue_entry_priv_usb_tx),
2100 };
2101
2102 static const struct rt2x00_ops rt73usb_ops = {
2103         .name           = KBUILD_MODNAME,
2104         .max_sta_intf   = 1,
2105         .max_ap_intf    = 4,
2106         .eeprom_size    = EEPROM_SIZE,
2107         .rf_size        = RF_SIZE,
2108         .rx             = &rt73usb_queue_rx,
2109         .tx             = &rt73usb_queue_tx,
2110         .bcn            = &rt73usb_queue_bcn,
2111         .lib            = &rt73usb_rt2x00_ops,
2112         .hw             = &rt73usb_mac80211_ops,
2113 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
2114         .debugfs        = &rt73usb_rt2x00debug,
2115 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
2116 };
2117
2118 /*
2119  * rt73usb module information.
2120  */
2121 static struct usb_device_id rt73usb_device_table[] = {
2122         /* AboCom */
2123         { USB_DEVICE(0x07b8, 0xb21d), USB_DEVICE_DATA(&rt73usb_ops) },
2124         /* Askey */
2125         { USB_DEVICE(0x1690, 0x0722), USB_DEVICE_DATA(&rt73usb_ops) },
2126         /* ASUS */
2127         { USB_DEVICE(0x0b05, 0x1723), USB_DEVICE_DATA(&rt73usb_ops) },
2128         { USB_DEVICE(0x0b05, 0x1724), USB_DEVICE_DATA(&rt73usb_ops) },
2129         /* Belkin */
2130         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt73usb_ops) },
2131         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt73usb_ops) },
2132         { USB_DEVICE(0x050d, 0x905b), USB_DEVICE_DATA(&rt73usb_ops) },
2133         { USB_DEVICE(0x050d, 0x905c), USB_DEVICE_DATA(&rt73usb_ops) },
2134         /* Billionton */
2135         { USB_DEVICE(0x1631, 0xc019), USB_DEVICE_DATA(&rt73usb_ops) },
2136         /* Buffalo */
2137         { USB_DEVICE(0x0411, 0x00f4), USB_DEVICE_DATA(&rt73usb_ops) },
2138         /* CNet */
2139         { USB_DEVICE(0x1371, 0x9022), USB_DEVICE_DATA(&rt73usb_ops) },
2140         { USB_DEVICE(0x1371, 0x9032), USB_DEVICE_DATA(&rt73usb_ops) },
2141         /* Conceptronic */
2142         { USB_DEVICE(0x14b2, 0x3c22), USB_DEVICE_DATA(&rt73usb_ops) },
2143         /* D-Link */
2144         { USB_DEVICE(0x07d1, 0x3c03), USB_DEVICE_DATA(&rt73usb_ops) },
2145         { USB_DEVICE(0x07d1, 0x3c04), USB_DEVICE_DATA(&rt73usb_ops) },
2146         /* Gemtek */
2147         { USB_DEVICE(0x15a9, 0x0004), USB_DEVICE_DATA(&rt73usb_ops) },
2148         /* Gigabyte */
2149         { USB_DEVICE(0x1044, 0x8008), USB_DEVICE_DATA(&rt73usb_ops) },
2150         { USB_DEVICE(0x1044, 0x800a), USB_DEVICE_DATA(&rt73usb_ops) },
2151         /* Huawei-3Com */
2152         { USB_DEVICE(0x1472, 0x0009), USB_DEVICE_DATA(&rt73usb_ops) },
2153         /* Hercules */
2154         { USB_DEVICE(0x06f8, 0xe010), USB_DEVICE_DATA(&rt73usb_ops) },
2155         { USB_DEVICE(0x06f8, 0xe020), USB_DEVICE_DATA(&rt73usb_ops) },
2156         /* Linksys */
2157         { USB_DEVICE(0x13b1, 0x0020), USB_DEVICE_DATA(&rt73usb_ops) },
2158         { USB_DEVICE(0x13b1, 0x0023), USB_DEVICE_DATA(&rt73usb_ops) },
2159         /* MSI */
2160         { USB_DEVICE(0x0db0, 0x6877), USB_DEVICE_DATA(&rt73usb_ops) },
2161         { USB_DEVICE(0x0db0, 0x6874), USB_DEVICE_DATA(&rt73usb_ops) },
2162         { USB_DEVICE(0x0db0, 0xa861), USB_DEVICE_DATA(&rt73usb_ops) },
2163         { USB_DEVICE(0x0db0, 0xa874), USB_DEVICE_DATA(&rt73usb_ops) },
2164         /* Ralink */
2165         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt73usb_ops) },
2166         { USB_DEVICE(0x148f, 0x2671), USB_DEVICE_DATA(&rt73usb_ops) },
2167         /* Qcom */
2168         { USB_DEVICE(0x18e8, 0x6196), USB_DEVICE_DATA(&rt73usb_ops) },
2169         { USB_DEVICE(0x18e8, 0x6229), USB_DEVICE_DATA(&rt73usb_ops) },
2170         { USB_DEVICE(0x18e8, 0x6238), USB_DEVICE_DATA(&rt73usb_ops) },
2171         /* Senao */
2172         { USB_DEVICE(0x1740, 0x7100), USB_DEVICE_DATA(&rt73usb_ops) },
2173         /* Sitecom */
2174         { USB_DEVICE(0x0df6, 0x9712), USB_DEVICE_DATA(&rt73usb_ops) },
2175         { USB_DEVICE(0x0df6, 0x90ac), USB_DEVICE_DATA(&rt73usb_ops) },
2176         /* Surecom */
2177         { USB_DEVICE(0x0769, 0x31f3), USB_DEVICE_DATA(&rt73usb_ops) },
2178         /* Planex */
2179         { USB_DEVICE(0x2019, 0xab01), USB_DEVICE_DATA(&rt73usb_ops) },
2180         { USB_DEVICE(0x2019, 0xab50), USB_DEVICE_DATA(&rt73usb_ops) },
2181         { 0, }
2182 };
2183
2184 MODULE_AUTHOR(DRV_PROJECT);
2185 MODULE_VERSION(DRV_VERSION);
2186 MODULE_DESCRIPTION("Ralink RT73 USB Wireless LAN driver.");
2187 MODULE_SUPPORTED_DEVICE("Ralink RT2571W & RT2671 USB chipset based cards");
2188 MODULE_DEVICE_TABLE(usb, rt73usb_device_table);
2189 MODULE_FIRMWARE(FIRMWARE_RT2571);
2190 MODULE_LICENSE("GPL");
2191
2192 static struct usb_driver rt73usb_driver = {
2193         .name           = KBUILD_MODNAME,
2194         .id_table       = rt73usb_device_table,
2195         .probe          = rt2x00usb_probe,
2196         .disconnect     = rt2x00usb_disconnect,
2197         .suspend        = rt2x00usb_suspend,
2198         .resume         = rt2x00usb_resume,
2199 };
2200
2201 static int __init rt73usb_init(void)
2202 {
2203         return usb_register(&rt73usb_driver);
2204 }
2205
2206 static void __exit rt73usb_exit(void)
2207 {
2208         usb_deregister(&rt73usb_driver);
2209 }
2210
2211 module_init(rt73usb_init);
2212 module_exit(rt73usb_exit);