SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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_sw(led->rt2x00dev, USB_LED_CONTROL, 0,
 298                                             led->rt2x00dev->led_mcu_reg,
 299                                             REGISTER_TIMEOUT);
 300         } else if (led->type == LED_TYPE_ASSOC) {
 301                 rt2x00_set_field16(&led->rt2x00dev->led_mcu_reg,
 302                                    MCU_LEDCS_LINK_BG_STATUS, bg_mode);
 303                 rt2x00_set_field16(&led->rt2x00dev->led_mcu_reg,
 304                                    MCU_LEDCS_LINK_A_STATUS, a_mode);
 305
 306                 rt2x00usb_vendor_request_sw(led->rt2x00dev, USB_LED_CONTROL, 0,
 307                                             led->rt2x00dev->led_mcu_reg,
 308                                             REGISTER_TIMEOUT);
 309         } else if (led->type == LED_TYPE_QUALITY) {
 310                 /*
 311                  * The brightness is divided into 6 levels (0 - 5),
 312                  * this means we need to convert the brightness
 313                  * argument into the matching level within that range.
 314                  */
 315                 rt2x00usb_vendor_request_sw(led->rt2x00dev, USB_LED_CONTROL,
 316                                             brightness / (LED_FULL / 6),
 317                                             led->rt2x00dev->led_mcu_reg,
 318                                             REGISTER_TIMEOUT);
 319         }
 320 }
 321 #else
 322 #define rt73usb_led_brightness  NULL
 323 #endif /* CONFIG_RT73USB_LEDS */
 324
 325 /*
 326  * Configuration handlers.
 327  */
 328 static void rt73usb_config_intf(struct rt2x00_dev *rt2x00dev,
 329                                 struct rt2x00_intf *intf,
 330                                 struct rt2x00intf_conf *conf,
 331                                 const unsigned int flags)
 332 {
 333         unsigned int beacon_base;
 334         u32 reg;
 335
 336         if (flags & CONFIG_UPDATE_TYPE) {
 337                 /*
 338                  * Clear current synchronisation setup.
 339                  * For the Beacon base registers we only need to clear
 340                  * the first byte since that byte contains the VALID and OWNER
 341                  * bits which (when set to 0) will invalidate the entire beacon.
 342                  */
 343                 beacon_base = HW_BEACON_OFFSET(intf->beacon->entry_idx);
 344                 rt73usb_register_write(rt2x00dev, TXRX_CSR9, 0);
 345                 rt73usb_register_write(rt2x00dev, beacon_base, 0);
 346
 347                 /*
 348                  * Enable synchronisation.
 349                  */
 350                 rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
 351                 rt2x00_set_field32(&reg, TXRX_CSR9_TSF_TICKING, 1);
 352                 rt2x00_set_field32(&reg, TXRX_CSR9_TBTT_ENABLE,
 353                                   (conf->sync == TSF_SYNC_BEACON));
 354                 rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 0);
 355                 rt2x00_set_field32(&reg, TXRX_CSR9_TSF_SYNC, conf->sync);
 356                 rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
 357         }
 358
 359         if (flags & CONFIG_UPDATE_MAC) {
 360                 reg = le32_to_cpu(conf->mac[1]);
 361                 rt2x00_set_field32(&reg, MAC_CSR3_UNICAST_TO_ME_MASK, 0xff);
 362                 conf->mac[1] = cpu_to_le32(reg);
 363
 364                 rt73usb_register_multiwrite(rt2x00dev, MAC_CSR2,
 365                                             conf->mac, sizeof(conf->mac));
 366         }
 367
 368         if (flags & CONFIG_UPDATE_BSSID) {
 369                 reg = le32_to_cpu(conf->bssid[1]);
 370                 rt2x00_set_field32(&reg, MAC_CSR5_BSS_ID_MASK, 3);
 371                 conf->bssid[1] = cpu_to_le32(reg);
 372
 373                 rt73usb_register_multiwrite(rt2x00dev, MAC_CSR4,
 374                                             conf->bssid, sizeof(conf->bssid));
 375         }
 376 }
 377
 378 static int rt73usb_config_preamble(struct rt2x00_dev *rt2x00dev,
 379                                    const int short_preamble,
 380                                    const int ack_timeout,
 381                                    const int ack_consume_time)
 382 {
 383         u32 reg;
 384
 385         /*
 386          * When in atomic context, we should let rt2x00lib
 387          * try this configuration again later.
 388          */
 389         if (in_atomic())
 390                 return -EAGAIN;
 391
 392         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 393         rt2x00_set_field32(&reg, TXRX_CSR0_RX_ACK_TIMEOUT, ack_timeout);
 394         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 395
 396         rt73usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
 397         rt2x00_set_field32(&reg, TXRX_CSR4_AUTORESPOND_PREAMBLE,
 398                            !!short_preamble);
 399         rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
 400
 401         return 0;
 402 }
 403
 404 static void rt73usb_config_phymode(struct rt2x00_dev *rt2x00dev,
 405                                    const int basic_rate_mask)
 406 {
 407         rt73usb_register_write(rt2x00dev, TXRX_CSR5, basic_rate_mask);
 408 }
 409
 410 static void rt73usb_config_channel(struct rt2x00_dev *rt2x00dev,
 411                                    struct rf_channel *rf, const int txpower)
 412 {
 413         u8 r3;
 414         u8 r94;
 415         u8 smart;
 416
 417         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 418         rt2x00_set_field32(&rf->rf4, RF4_FREQ_OFFSET, rt2x00dev->freq_offset);
 419
 420         smart = !(rt2x00_rf(&rt2x00dev->chip, RF5225) ||
 421                   rt2x00_rf(&rt2x00dev->chip, RF2527));
 422
 423         rt73usb_bbp_read(rt2x00dev, 3, &r3);
 424         rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, smart);
 425         rt73usb_bbp_write(rt2x00dev, 3, r3);
 426
 427         r94 = 6;
 428         if (txpower > MAX_TXPOWER && txpower <= (MAX_TXPOWER + r94))
 429                 r94 += txpower - MAX_TXPOWER;
 430         else if (txpower < MIN_TXPOWER && txpower >= (MIN_TXPOWER - r94))
 431                 r94 += txpower;
 432         rt73usb_bbp_write(rt2x00dev, 94, r94);
 433
 434         rt73usb_rf_write(rt2x00dev, 1, rf->rf1);
 435         rt73usb_rf_write(rt2x00dev, 2, rf->rf2);
 436         rt73usb_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004);
 437         rt73usb_rf_write(rt2x00dev, 4, rf->rf4);
 438
 439         rt73usb_rf_write(rt2x00dev, 1, rf->rf1);
 440         rt73usb_rf_write(rt2x00dev, 2, rf->rf2);
 441         rt73usb_rf_write(rt2x00dev, 3, rf->rf3 | 0x00000004);
 442         rt73usb_rf_write(rt2x00dev, 4, rf->rf4);
 443
 444         rt73usb_rf_write(rt2x00dev, 1, rf->rf1);
 445         rt73usb_rf_write(rt2x00dev, 2, rf->rf2);
 446         rt73usb_rf_write(rt2x00dev, 3, rf->rf3 & ~0x00000004);
 447         rt73usb_rf_write(rt2x00dev, 4, rf->rf4);
 448
 449         udelay(10);
 450 }
 451
 452 static void rt73usb_config_txpower(struct rt2x00_dev *rt2x00dev,
 453                                    const int txpower)
 454 {
 455         struct rf_channel rf;
 456
 457         rt2x00_rf_read(rt2x00dev, 1, &rf.rf1);
 458         rt2x00_rf_read(rt2x00dev, 2, &rf.rf2);
 459         rt2x00_rf_read(rt2x00dev, 3, &rf.rf3);
 460         rt2x00_rf_read(rt2x00dev, 4, &rf.rf4);
 461
 462         rt73usb_config_channel(rt2x00dev, &rf, txpower);
 463 }
 464
 465 static void rt73usb_config_antenna_5x(struct rt2x00_dev *rt2x00dev,
 466                                       struct antenna_setup *ant)
 467 {
 468         u8 r3;
 469         u8 r4;
 470         u8 r77;
 471         u8 temp;
 472
 473         rt73usb_bbp_read(rt2x00dev, 3, &r3);
 474         rt73usb_bbp_read(rt2x00dev, 4, &r4);
 475         rt73usb_bbp_read(rt2x00dev, 77, &r77);
 476
 477         rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, 0);
 478
 479         /*
 480          * Configure the RX antenna.
 481          */
 482         switch (ant->rx) {
 483         case ANTENNA_HW_DIVERSITY:
 484                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 2);
 485                 temp = !test_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags)
 486                        && (rt2x00dev->curr_band != IEEE80211_BAND_5GHZ);
 487                 rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, temp);
 488                 break;
 489         case ANTENNA_A:
 490                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
 491                 rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, 0);
 492                 if (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ)
 493                         rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
 494                 else
 495                         rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
 496                 break;
 497         case ANTENNA_SW_DIVERSITY:
 498                 /*
 499                  * NOTE: We should never come here because rt2x00lib is
 500                  * supposed to catch this and send us the correct antenna
 501                  * explicitely. However we are nog going to bug about this.
 502                  * Instead, just default to antenna B.
 503                  */
 504         case ANTENNA_B:
 505                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
 506                 rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END, 0);
 507                 if (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ)
 508                         rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
 509                 else
 510                         rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
 511                 break;
 512         }
 513
 514         rt73usb_bbp_write(rt2x00dev, 77, r77);
 515         rt73usb_bbp_write(rt2x00dev, 3, r3);
 516         rt73usb_bbp_write(rt2x00dev, 4, r4);
 517 }
 518
 519 static void rt73usb_config_antenna_2x(struct rt2x00_dev *rt2x00dev,
 520                                       struct antenna_setup *ant)
 521 {
 522         u8 r3;
 523         u8 r4;
 524         u8 r77;
 525
 526         rt73usb_bbp_read(rt2x00dev, 3, &r3);
 527         rt73usb_bbp_read(rt2x00dev, 4, &r4);
 528         rt73usb_bbp_read(rt2x00dev, 77, &r77);
 529
 530         rt2x00_set_field8(&r3, BBP_R3_SMART_MODE, 0);
 531         rt2x00_set_field8(&r4, BBP_R4_RX_FRAME_END,
 532                           !test_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags));
 533
 534         /*
 535          * Configure the RX antenna.
 536          */
 537         switch (ant->rx) {
 538         case ANTENNA_HW_DIVERSITY:
 539                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 2);
 540                 break;
 541         case ANTENNA_A:
 542                 rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 3);
 543                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
 544                 break;
 545         case ANTENNA_SW_DIVERSITY:
 546                 /*
 547                  * NOTE: We should never come here because rt2x00lib is
 548                  * supposed to catch this and send us the correct antenna
 549                  * explicitely. However we are nog going to bug about this.
 550                  * Instead, just default to antenna B.
 551                  */
 552         case ANTENNA_B:
 553                 rt2x00_set_field8(&r77, BBP_R77_RX_ANTENNA, 0);
 554                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA_CONTROL, 1);
 555                 break;
 556         }
 557
 558         rt73usb_bbp_write(rt2x00dev, 77, r77);
 559         rt73usb_bbp_write(rt2x00dev, 3, r3);
 560         rt73usb_bbp_write(rt2x00dev, 4, r4);
 561 }
 562
 563 struct antenna_sel {
 564         u8 word;
 565         /*
 566          * value[0] -> non-LNA
 567          * value[1] -> LNA
 568          */
 569         u8 value[2];
 570 };
 571
 572 static const struct antenna_sel antenna_sel_a[] = {
 573         { 96,  { 0x58, 0x78 } },
 574         { 104, { 0x38, 0x48 } },
 575         { 75,  { 0xfe, 0x80 } },
 576         { 86,  { 0xfe, 0x80 } },
 577         { 88,  { 0xfe, 0x80 } },
 578         { 35,  { 0x60, 0x60 } },
 579         { 97,  { 0x58, 0x58 } },
 580         { 98,  { 0x58, 0x58 } },
 581 };
 582
 583 static const struct antenna_sel antenna_sel_bg[] = {
 584         { 96,  { 0x48, 0x68 } },
 585         { 104, { 0x2c, 0x3c } },
 586         { 75,  { 0xfe, 0x80 } },
 587         { 86,  { 0xfe, 0x80 } },
 588         { 88,  { 0xfe, 0x80 } },
 589         { 35,  { 0x50, 0x50 } },
 590         { 97,  { 0x48, 0x48 } },
 591         { 98,  { 0x48, 0x48 } },
 592 };
 593
 594 static void rt73usb_config_antenna(struct rt2x00_dev *rt2x00dev,
 595                                    struct antenna_setup *ant)
 596 {
 597         const struct antenna_sel *sel;
 598         unsigned int lna;
 599         unsigned int i;
 600         u32 reg;
 601
 602         if (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ) {
 603                 sel = antenna_sel_a;
 604                 lna = test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags);
 605         } else {
 606                 sel = antenna_sel_bg;
 607                 lna = test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags);
 608         }
 609
 610         for (i = 0; i < ARRAY_SIZE(antenna_sel_a); i++)
 611                 rt73usb_bbp_write(rt2x00dev, sel[i].word, sel[i].value[lna]);
 612
 613         rt73usb_register_read(rt2x00dev, PHY_CSR0, &reg);
 614
 615         rt2x00_set_field32(&reg, PHY_CSR0_PA_PE_BG,
 616                            (rt2x00dev->curr_band == IEEE80211_BAND_2GHZ));
 617         rt2x00_set_field32(&reg, PHY_CSR0_PA_PE_A,
 618                            (rt2x00dev->curr_band == IEEE80211_BAND_5GHZ));
 619
 620         rt73usb_register_write(rt2x00dev, PHY_CSR0, reg);
 621
 622         if (rt2x00_rf(&rt2x00dev->chip, RF5226) ||
 623             rt2x00_rf(&rt2x00dev->chip, RF5225))
 624                 rt73usb_config_antenna_5x(rt2x00dev, ant);
 625         else if (rt2x00_rf(&rt2x00dev->chip, RF2528) ||
 626                  rt2x00_rf(&rt2x00dev->chip, RF2527))
 627                 rt73usb_config_antenna_2x(rt2x00dev, ant);
 628 }
 629
 630 static void rt73usb_config_duration(struct rt2x00_dev *rt2x00dev,
 631                                     struct rt2x00lib_conf *libconf)
 632 {
 633         u32 reg;
 634
 635         rt73usb_register_read(rt2x00dev, MAC_CSR9, &reg);
 636         rt2x00_set_field32(&reg, MAC_CSR9_SLOT_TIME, libconf->slot_time);
 637         rt73usb_register_write(rt2x00dev, MAC_CSR9, reg);
 638
 639         rt73usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 640         rt2x00_set_field32(&reg, MAC_CSR8_SIFS, libconf->sifs);
 641         rt2x00_set_field32(&reg, MAC_CSR8_SIFS_AFTER_RX_OFDM, 3);
 642         rt2x00_set_field32(&reg, MAC_CSR8_EIFS, libconf->eifs);
 643         rt73usb_register_write(rt2x00dev, MAC_CSR8, reg);
 644
 645         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 646         rt2x00_set_field32(&reg, TXRX_CSR0_TSF_OFFSET, IEEE80211_HEADER);
 647         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 648
 649         rt73usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
 650         rt2x00_set_field32(&reg, TXRX_CSR4_AUTORESPOND_ENABLE, 1);
 651         rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
 652
 653         rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
 654         rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_INTERVAL,
 655                            libconf->conf->beacon_int * 16);
 656         rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
 657 }
 658
 659 static void rt73usb_config(struct rt2x00_dev *rt2x00dev,
 660                            struct rt2x00lib_conf *libconf,
 661                            const unsigned int flags)
 662 {
 663         if (flags & CONFIG_UPDATE_PHYMODE)
 664                 rt73usb_config_phymode(rt2x00dev, libconf->basic_rates);
 665         if (flags & CONFIG_UPDATE_CHANNEL)
 666                 rt73usb_config_channel(rt2x00dev, &libconf->rf,
 667                                        libconf->conf->power_level);
 668         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
 669                 rt73usb_config_txpower(rt2x00dev, libconf->conf->power_level);
 670         if (flags & CONFIG_UPDATE_ANTENNA)
 671                 rt73usb_config_antenna(rt2x00dev, &libconf->ant);
 672         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
 673                 rt73usb_config_duration(rt2x00dev, libconf);
 674 }
 675
 676 /*
 677  * Link tuning
 678  */
 679 static void rt73usb_link_stats(struct rt2x00_dev *rt2x00dev,
 680                                struct link_qual *qual)
 681 {
 682         u32 reg;
 683
 684         /*
 685          * Update FCS error count from register.
 686          */
 687         rt73usb_register_read(rt2x00dev, STA_CSR0, &reg);
 688         qual->rx_failed = rt2x00_get_field32(reg, STA_CSR0_FCS_ERROR);
 689
 690         /*
 691          * Update False CCA count from register.
 692          */
 693         rt73usb_register_read(rt2x00dev, STA_CSR1, &reg);
 694         qual->false_cca = rt2x00_get_field32(reg, STA_CSR1_FALSE_CCA_ERROR);
 695 }
 696
 697 static void rt73usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
 698 {
 699         rt73usb_bbp_write(rt2x00dev, 17, 0x20);
 700         rt2x00dev->link.vgc_level = 0x20;
 701 }
 702
 703 static void rt73usb_link_tuner(struct rt2x00_dev *rt2x00dev)
 704 {
 705         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
 706         u8 r17;
 707         u8 up_bound;
 708         u8 low_bound;
 709
 710         rt73usb_bbp_read(rt2x00dev, 17, &r17);
 711
 712         /*
 713          * Determine r17 bounds.
 714          */
 715         if (rt2x00dev->rx_status.band == IEEE80211_BAND_5GHZ) {
 716                 low_bound = 0x28;
 717                 up_bound = 0x48;
 718
 719                 if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags)) {
 720                         low_bound += 0x10;
 721                         up_bound += 0x10;
 722                 }
 723         } else {
 724                 if (rssi > -82) {
 725                         low_bound = 0x1c;
 726                         up_bound = 0x40;
 727                 } else if (rssi > -84) {
 728                         low_bound = 0x1c;
 729                         up_bound = 0x20;
 730                 } else {
 731                         low_bound = 0x1c;
 732                         up_bound = 0x1c;
 733                 }
 734
 735                 if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags)) {
 736                         low_bound += 0x14;
 737                         up_bound += 0x10;
 738                 }
 739         }
 740
 741         /*
 742          * If we are not associated, we should go straight to the
 743          * dynamic CCA tuning.
 744          */
 745         if (!rt2x00dev->intf_associated)
 746                 goto dynamic_cca_tune;
 747
 748         /*
 749          * Special big-R17 for very short distance
 750          */
 751         if (rssi > -35) {
 752                 if (r17 != 0x60)
 753                         rt73usb_bbp_write(rt2x00dev, 17, 0x60);
 754                 return;
 755         }
 756
 757         /*
 758          * Special big-R17 for short distance
 759          */
 760         if (rssi >= -58) {
 761                 if (r17 != up_bound)
 762                         rt73usb_bbp_write(rt2x00dev, 17, up_bound);
 763                 return;
 764         }
 765
 766         /*
 767          * Special big-R17 for middle-short distance
 768          */
 769         if (rssi >= -66) {
 770                 low_bound += 0x10;
 771                 if (r17 != low_bound)
 772                         rt73usb_bbp_write(rt2x00dev, 17, low_bound);
 773                 return;
 774         }
 775
 776         /*
 777          * Special mid-R17 for middle distance
 778          */
 779         if (rssi >= -74) {
 780                 if (r17 != (low_bound + 0x10))
 781                         rt73usb_bbp_write(rt2x00dev, 17, low_bound + 0x08);
 782                 return;
 783         }
 784
 785         /*
 786          * Special case: Change up_bound based on the rssi.
 787          * Lower up_bound when rssi is weaker then -74 dBm.
 788          */
 789         up_bound -= 2 * (-74 - rssi);
 790         if (low_bound > up_bound)
 791                 up_bound = low_bound;
 792
 793         if (r17 > up_bound) {
 794                 rt73usb_bbp_write(rt2x00dev, 17, up_bound);
 795                 return;
 796         }
 797
 798 dynamic_cca_tune:
 799
 800         /*
 801          * r17 does not yet exceed upper limit, continue and base
 802          * the r17 tuning on the false CCA count.
 803          */
 804         if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
 805                 r17 += 4;
 806                 if (r17 > up_bound)
 807                         r17 = up_bound;
 808                 rt73usb_bbp_write(rt2x00dev, 17, r17);
 809         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
 810                 r17 -= 4;
 811                 if (r17 < low_bound)
 812                         r17 = low_bound;
 813                 rt73usb_bbp_write(rt2x00dev, 17, r17);
 814         }
 815 }
 816
 817 /*
 818  * Firmware name function.
 819  */
 820 static char *rt73usb_get_firmware_name(struct rt2x00_dev *rt2x00dev)
 821 {
 822         return FIRMWARE_RT2571;
 823 }
 824
 825 /*
 826  * Initialization functions.
 827  */
 828 static int rt73usb_load_firmware(struct rt2x00_dev *rt2x00dev, void *data,
 829                                  const size_t len)
 830 {
 831         unsigned int i;
 832         int status;
 833         u32 reg;
 834         char *ptr = data;
 835         char *cache;
 836         int buflen;
 837         int timeout;
 838
 839         /*
 840          * Wait for stable hardware.
 841          */
 842         for (i = 0; i < 100; i++) {
 843                 rt73usb_register_read(rt2x00dev, MAC_CSR0, &reg);
 844                 if (reg)
 845                         break;
 846                 msleep(1);
 847         }
 848
 849         if (!reg) {
 850                 ERROR(rt2x00dev, "Unstable hardware.\n");
 851                 return -EBUSY;
 852         }
 853
 854         /*
 855          * Write firmware to device.
 856          * We setup a seperate cache for this action,
 857          * since we are going to write larger chunks of data
 858          * then normally used cache size.
 859          */
 860         cache = kmalloc(CSR_CACHE_SIZE_FIRMWARE, GFP_KERNEL);
 861         if (!cache) {
 862                 ERROR(rt2x00dev, "Failed to allocate firmware cache.\n");
 863                 return -ENOMEM;
 864         }
 865
 866         for (i = 0; i < len; i += CSR_CACHE_SIZE_FIRMWARE) {
 867                 buflen = min_t(int, len - i, CSR_CACHE_SIZE_FIRMWARE);
 868                 timeout = REGISTER_TIMEOUT * (buflen / sizeof(u32));
 869
 870                 memcpy(cache, ptr, buflen);
 871
 872                 rt2x00usb_vendor_request(rt2x00dev, USB_MULTI_WRITE,
 873                                          USB_VENDOR_REQUEST_OUT,
 874                                          FIRMWARE_IMAGE_BASE + i, 0x0000,
 875                                          cache, buflen, timeout);
 876
 877                 ptr += buflen;
 878         }
 879
 880         kfree(cache);
 881
 882         /*
 883          * Send firmware request to device to load firmware,
 884          * we need to specify a long timeout time.
 885          */
 886         status = rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE,
 887                                              0x0000, USB_MODE_FIRMWARE,
 888                                              REGISTER_TIMEOUT_FIRMWARE);
 889         if (status < 0) {
 890                 ERROR(rt2x00dev, "Failed to write Firmware to device.\n");
 891                 return status;
 892         }
 893
 894         return 0;
 895 }
 896
 897 static int rt73usb_init_registers(struct rt2x00_dev *rt2x00dev)
 898 {
 899         u32 reg;
 900
 901         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 902         rt2x00_set_field32(&reg, TXRX_CSR0_AUTO_TX_SEQ, 1);
 903         rt2x00_set_field32(&reg, TXRX_CSR0_DISABLE_RX, 0);
 904         rt2x00_set_field32(&reg, TXRX_CSR0_TX_WITHOUT_WAITING, 0);
 905         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 906
 907         rt73usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 908         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID0, 47); /* CCK Signal */
 909         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID0_VALID, 1);
 910         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID1, 30); /* Rssi */
 911         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID1_VALID, 1);
 912         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID2, 42); /* OFDM Rate */
 913         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID2_VALID, 1);
 914         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID3, 30); /* Rssi */
 915         rt2x00_set_field32(&reg, TXRX_CSR1_BBP_ID3_VALID, 1);
 916         rt73usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 917
 918         /*
 919          * CCK TXD BBP registers
 920          */
 921         rt73usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 922         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID0, 13);
 923         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID0_VALID, 1);
 924         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID1, 12);
 925         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID1_VALID, 1);
 926         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID2, 11);
 927         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID2_VALID, 1);
 928         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID3, 10);
 929         rt2x00_set_field32(&reg, TXRX_CSR2_BBP_ID3_VALID, 1);
 930         rt73usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 931
 932         /*
 933          * OFDM TXD BBP registers
 934          */
 935         rt73usb_register_read(rt2x00dev, TXRX_CSR3, &reg);
 936         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID0, 7);
 937         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID0_VALID, 1);
 938         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID1, 6);
 939         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID1_VALID, 1);
 940         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID2, 5);
 941         rt2x00_set_field32(&reg, TXRX_CSR3_BBP_ID2_VALID, 1);
 942         rt73usb_register_write(rt2x00dev, TXRX_CSR3, reg);
 943
 944         rt73usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 945         rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_6MBS, 59);
 946         rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_9MBS, 53);
 947         rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_12MBS, 49);
 948         rt2x00_set_field32(&reg, TXRX_CSR7_ACK_CTS_18MBS, 46);
 949         rt73usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 950
 951         rt73usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 952         rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_24MBS, 44);
 953         rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_36MBS, 42);
 954         rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_48MBS, 42);
 955         rt2x00_set_field32(&reg, TXRX_CSR8_ACK_CTS_54MBS, 42);
 956         rt73usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 957
 958         rt73usb_register_write(rt2x00dev, TXRX_CSR15, 0x0000000f);
 959
 960         rt73usb_register_read(rt2x00dev, MAC_CSR6, &reg);
 961         rt2x00_set_field32(&reg, MAC_CSR6_MAX_FRAME_UNIT, 0xfff);
 962         rt73usb_register_write(rt2x00dev, MAC_CSR6, reg);
 963
 964         rt73usb_register_write(rt2x00dev, MAC_CSR10, 0x00000718);
 965
 966         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 967                 return -EBUSY;
 968
 969         rt73usb_register_write(rt2x00dev, MAC_CSR13, 0x00007f00);
 970
 971         rt73usb_register_read(rt2x00dev, MAC_CSR14, &reg);
 972         rt2x00_set_field32(&reg, MAC_CSR14_ON_PERIOD, 70);
 973         rt2x00_set_field32(&reg, MAC_CSR14_OFF_PERIOD, 30);
 974         rt73usb_register_write(rt2x00dev, MAC_CSR14, reg);
 975
 976         /*
 977          * Invalidate all Shared Keys (SEC_CSR0),
 978          * and clear the Shared key Cipher algorithms (SEC_CSR1 & SEC_CSR5)
 979          */
 980         rt73usb_register_write(rt2x00dev, SEC_CSR0, 0x00000000);
 981         rt73usb_register_write(rt2x00dev, SEC_CSR1, 0x00000000);
 982         rt73usb_register_write(rt2x00dev, SEC_CSR5, 0x00000000);
 983
 984         reg = 0x000023b0;
 985         if (rt2x00_rf(&rt2x00dev->chip, RF5225) ||
 986             rt2x00_rf(&rt2x00dev->chip, RF2527))
 987                 rt2x00_set_field32(&reg, PHY_CSR1_RF_RPI, 1);
 988         rt73usb_register_write(rt2x00dev, PHY_CSR1, reg);
 989
 990         rt73usb_register_write(rt2x00dev, PHY_CSR5, 0x00040a06);
 991         rt73usb_register_write(rt2x00dev, PHY_CSR6, 0x00080606);
 992         rt73usb_register_write(rt2x00dev, PHY_CSR7, 0x00000408);
 993
 994         rt73usb_register_read(rt2x00dev, AC_TXOP_CSR0, &reg);
 995         rt2x00_set_field32(&reg, AC_TXOP_CSR0_AC0_TX_OP, 0);
 996         rt2x00_set_field32(&reg, AC_TXOP_CSR0_AC1_TX_OP, 0);
 997         rt73usb_register_write(rt2x00dev, AC_TXOP_CSR0, reg);
 998
 999         rt73usb_register_read(rt2x00dev, AC_TXOP_CSR1, &reg);
1000         rt2x00_set_field32(&reg, AC_TXOP_CSR1_AC2_TX_OP, 192);
1001         rt2x00_set_field32(&reg, AC_TXOP_CSR1_AC3_TX_OP, 48);
1002         rt73usb_register_write(rt2x00dev, AC_TXOP_CSR1, reg);
1003
1004         rt73usb_register_read(rt2x00dev, MAC_CSR9, &reg);
1005         rt2x00_set_field32(&reg, MAC_CSR9_CW_SELECT, 0);
1006         rt73usb_register_write(rt2x00dev, MAC_CSR9, reg);
1007
1008         /*
1009          * Clear all beacons
1010          * For the Beacon base registers we only need to clear
1011          * the first byte since that byte contains the VALID and OWNER
1012          * bits which (when set to 0) will invalidate the entire beacon.
1013          */
1014         rt73usb_register_write(rt2x00dev, HW_BEACON_BASE0, 0);
1015         rt73usb_register_write(rt2x00dev, HW_BEACON_BASE1, 0);
1016         rt73usb_register_write(rt2x00dev, HW_BEACON_BASE2, 0);
1017         rt73usb_register_write(rt2x00dev, HW_BEACON_BASE3, 0);
1018
1019         /*
1020          * We must clear the error counters.
1021          * These registers are cleared on read,
1022          * so we may pass a useless variable to store the value.
1023          */
1024         rt73usb_register_read(rt2x00dev, STA_CSR0, &reg);
1025         rt73usb_register_read(rt2x00dev, STA_CSR1, &reg);
1026         rt73usb_register_read(rt2x00dev, STA_CSR2, &reg);
1027
1028         /*
1029          * Reset MAC and BBP registers.
1030          */
1031         rt73usb_register_read(rt2x00dev, MAC_CSR1, &reg);
1032         rt2x00_set_field32(&reg, MAC_CSR1_SOFT_RESET, 1);
1033         rt2x00_set_field32(&reg, MAC_CSR1_BBP_RESET, 1);
1034         rt73usb_register_write(rt2x00dev, MAC_CSR1, reg);
1035
1036         rt73usb_register_read(rt2x00dev, MAC_CSR1, &reg);
1037         rt2x00_set_field32(&reg, MAC_CSR1_SOFT_RESET, 0);
1038         rt2x00_set_field32(&reg, MAC_CSR1_BBP_RESET, 0);
1039         rt73usb_register_write(rt2x00dev, MAC_CSR1, reg);
1040
1041         rt73usb_register_read(rt2x00dev, MAC_CSR1, &reg);
1042         rt2x00_set_field32(&reg, MAC_CSR1_HOST_READY, 1);
1043         rt73usb_register_write(rt2x00dev, MAC_CSR1, reg);
1044
1045         return 0;
1046 }
1047
1048 static int rt73usb_init_bbp(struct rt2x00_dev *rt2x00dev)
1049 {
1050         unsigned int i;
1051         u16 eeprom;
1052         u8 reg_id;
1053         u8 value;
1054
1055         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
1056                 rt73usb_bbp_read(rt2x00dev, 0, &value);
1057                 if ((value != 0xff) && (value != 0x00))
1058                         goto continue_csr_init;
1059                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
1060                 udelay(REGISTER_BUSY_DELAY);
1061         }
1062
1063         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
1064         return -EACCES;
1065
1066 continue_csr_init:
1067         rt73usb_bbp_write(rt2x00dev, 3, 0x80);
1068         rt73usb_bbp_write(rt2x00dev, 15, 0x30);
1069         rt73usb_bbp_write(rt2x00dev, 21, 0xc8);
1070         rt73usb_bbp_write(rt2x00dev, 22, 0x38);
1071         rt73usb_bbp_write(rt2x00dev, 23, 0x06);
1072         rt73usb_bbp_write(rt2x00dev, 24, 0xfe);
1073         rt73usb_bbp_write(rt2x00dev, 25, 0x0a);
1074         rt73usb_bbp_write(rt2x00dev, 26, 0x0d);
1075         rt73usb_bbp_write(rt2x00dev, 32, 0x0b);
1076         rt73usb_bbp_write(rt2x00dev, 34, 0x12);
1077         rt73usb_bbp_write(rt2x00dev, 37, 0x07);
1078         rt73usb_bbp_write(rt2x00dev, 39, 0xf8);
1079         rt73usb_bbp_write(rt2x00dev, 41, 0x60);
1080         rt73usb_bbp_write(rt2x00dev, 53, 0x10);
1081         rt73usb_bbp_write(rt2x00dev, 54, 0x18);
1082         rt73usb_bbp_write(rt2x00dev, 60, 0x10);
1083         rt73usb_bbp_write(rt2x00dev, 61, 0x04);
1084         rt73usb_bbp_write(rt2x00dev, 62, 0x04);
1085         rt73usb_bbp_write(rt2x00dev, 75, 0xfe);
1086         rt73usb_bbp_write(rt2x00dev, 86, 0xfe);
1087         rt73usb_bbp_write(rt2x00dev, 88, 0xfe);
1088         rt73usb_bbp_write(rt2x00dev, 90, 0x0f);
1089         rt73usb_bbp_write(rt2x00dev, 99, 0x00);
1090         rt73usb_bbp_write(rt2x00dev, 102, 0x16);
1091         rt73usb_bbp_write(rt2x00dev, 107, 0x04);
1092
1093         DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
1094         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
1095                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
1096
1097                 if (eeprom != 0xffff && eeprom != 0x0000) {
1098                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
1099                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
1100                         DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
1101                               reg_id, value);
1102                         rt73usb_bbp_write(rt2x00dev, reg_id, value);
1103                 }
1104         }
1105         DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
1106
1107         return 0;
1108 }
1109
1110 /*
1111  * Device state switch handlers.
1112  */
1113 static void rt73usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
1114                               enum dev_state state)
1115 {
1116         u32 reg;
1117
1118         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
1119         rt2x00_set_field32(&reg, TXRX_CSR0_DISABLE_RX,
1120                            state == STATE_RADIO_RX_OFF);
1121         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
1122 }
1123
1124 static int rt73usb_enable_radio(struct rt2x00_dev *rt2x00dev)
1125 {
1126         /*
1127          * Initialize all registers.
1128          */
1129         if (rt73usb_init_registers(rt2x00dev) ||
1130             rt73usb_init_bbp(rt2x00dev)) {
1131                 ERROR(rt2x00dev, "Register initialization failed.\n");
1132                 return -EIO;
1133         }
1134
1135         return 0;
1136 }
1137
1138 static void rt73usb_disable_radio(struct rt2x00_dev *rt2x00dev)
1139 {
1140         rt73usb_register_write(rt2x00dev, MAC_CSR10, 0x00001818);
1141
1142         /*
1143          * Disable synchronisation.
1144          */
1145         rt73usb_register_write(rt2x00dev, TXRX_CSR9, 0);
1146
1147         rt2x00usb_disable_radio(rt2x00dev);
1148 }
1149
1150 static int rt73usb_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state)
1151 {
1152         u32 reg;
1153         unsigned int i;
1154         char put_to_sleep;
1155         char current_state;
1156
1157         put_to_sleep = (state != STATE_AWAKE);
1158
1159         rt73usb_register_read(rt2x00dev, MAC_CSR12, &reg);
1160         rt2x00_set_field32(&reg, MAC_CSR12_FORCE_WAKEUP, !put_to_sleep);
1161         rt2x00_set_field32(&reg, MAC_CSR12_PUT_TO_SLEEP, put_to_sleep);
1162         rt73usb_register_write(rt2x00dev, MAC_CSR12, reg);
1163
1164         /*
1165          * Device is not guaranteed to be in the requested state yet.
1166          * We must wait until the register indicates that the
1167          * device has entered the correct state.
1168          */
1169         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
1170                 rt73usb_register_read(rt2x00dev, MAC_CSR12, &reg);
1171                 current_state =
1172                     rt2x00_get_field32(reg, MAC_CSR12_BBP_CURRENT_STATE);
1173                 if (current_state == !put_to_sleep)
1174                         return 0;
1175                 msleep(10);
1176         }
1177
1178         NOTICE(rt2x00dev, "Device failed to enter state %d, "
1179                "current device state %d.\n", !put_to_sleep, current_state);
1180
1181         return -EBUSY;
1182 }
1183
1184 static int rt73usb_set_device_state(struct rt2x00_dev *rt2x00dev,
1185                                     enum dev_state state)
1186 {
1187         int retval = 0;
1188
1189         switch (state) {
1190         case STATE_RADIO_ON:
1191                 retval = rt73usb_enable_radio(rt2x00dev);
1192                 break;
1193         case STATE_RADIO_OFF:
1194                 rt73usb_disable_radio(rt2x00dev);
1195                 break;
1196         case STATE_RADIO_RX_ON:
1197         case STATE_RADIO_RX_ON_LINK:
1198                 rt73usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
1199                 break;
1200         case STATE_RADIO_RX_OFF:
1201         case STATE_RADIO_RX_OFF_LINK:
1202                 rt73usb_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
1203                 break;
1204         case STATE_DEEP_SLEEP:
1205         case STATE_SLEEP:
1206         case STATE_STANDBY:
1207         case STATE_AWAKE:
1208                 retval = rt73usb_set_state(rt2x00dev, state);
1209                 break;
1210         default:
1211                 retval = -ENOTSUPP;
1212                 break;
1213         }
1214
1215         return retval;
1216 }
1217
1218 /*
1219  * TX descriptor initialization
1220  */
1221 static void rt73usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1222                                     struct sk_buff *skb,
1223                                     struct txentry_desc *txdesc,
1224                                     struct ieee80211_tx_control *control)
1225 {
1226         struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
1227         __le32 *txd = skbdesc->desc;
1228         u32 word;
1229
1230         /*
1231          * Start writing the descriptor words.
1232          */
1233         rt2x00_desc_read(txd, 1, &word);
1234         rt2x00_set_field32(&word, TXD_W1_HOST_Q_ID, txdesc->queue);
1235         rt2x00_set_field32(&word, TXD_W1_AIFSN, txdesc->aifs);
1236         rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
1237         rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
1238         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1239         rt2x00_set_field32(&word, TXD_W1_HW_SEQUENCE, 1);
1240         rt2x00_desc_write(txd, 1, word);
1241
1242         rt2x00_desc_read(txd, 2, &word);
1243         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
1244         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
1245         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
1246         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
1247         rt2x00_desc_write(txd, 2, word);
1248
1249         rt2x00_desc_read(txd, 5, &word);
1250 /* XXX: removed for now
1251         rt2x00_set_field32(&word, TXD_W5_TX_POWER,
1252                            TXPOWER_TO_DEV(control->power_level));
1253  */
1254         rt2x00_set_field32(&word, TXD_W5_WAITING_DMA_DONE_INT, 1);
1255         rt2x00_desc_write(txd, 5, word);
1256
1257         rt2x00_desc_read(txd, 0, &word);
1258         rt2x00_set_field32(&word, TXD_W0_BURST,
1259                            test_bit(ENTRY_TXD_BURST, &txdesc->flags));
1260         rt2x00_set_field32(&word, TXD_W0_VALID, 1);
1261         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1262                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1263         rt2x00_set_field32(&word, TXD_W0_ACK,
1264                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1265         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1266                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1267         rt2x00_set_field32(&word, TXD_W0_OFDM,
1268                            test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
1269         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1270         rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
1271                            !!(control->flags &
1272                               IEEE80211_TXCTL_LONG_RETRY_LIMIT));
1273         rt2x00_set_field32(&word, TXD_W0_TKIP_MIC, 0);
1274         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skbdesc->data_len);
1275         rt2x00_set_field32(&word, TXD_W0_BURST2,
1276                            test_bit(ENTRY_TXD_BURST, &txdesc->flags));
1277         rt2x00_set_field32(&word, TXD_W0_CIPHER_ALG, CIPHER_NONE);
1278         rt2x00_desc_write(txd, 0, word);
1279 }
1280
1281 static int rt73usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1282                                    struct sk_buff *skb)
1283 {
1284         int length;
1285
1286         /*
1287          * The length _must_ be a multiple of 4,
1288          * but it must _not_ be a multiple of the USB packet size.
1289          */
1290         length = roundup(skb->len, 4);
1291         length += (4 * !(length % rt2x00dev->usb_maxpacket));
1292
1293         return length;
1294 }
1295
1296 /*
1297  * TX data initialization
1298  */
1299 static void rt73usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1300                                   const unsigned int queue)
1301 {
1302         u32 reg;
1303
1304         if (queue != RT2X00_BCN_QUEUE_BEACON)
1305                 return;
1306
1307         /*
1308          * For Wi-Fi faily generated beacons between participating stations.
1309          * Set TBTT phase adaptive adjustment step to 8us (default 16us)
1310          */
1311         rt73usb_register_write(rt2x00dev, TXRX_CSR10, 0x00001008);
1312
1313         rt73usb_register_read(rt2x00dev, TXRX_CSR9, &reg);
1314         if (!rt2x00_get_field32(reg, TXRX_CSR9_BEACON_GEN)) {
1315                 rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 1);
1316                 rt73usb_register_write(rt2x00dev, TXRX_CSR9, reg);
1317         }
1318 }
1319
1320 /*
1321  * RX control handlers
1322  */
1323 static int rt73usb_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxd_w1)
1324 {
1325         u16 eeprom;
1326         u8 offset;
1327         u8 lna;
1328
1329         lna = rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_LNA);
1330         switch (lna) {
1331         case 3:
1332                 offset = 90;
1333                 break;
1334         case 2:
1335                 offset = 74;
1336                 break;
1337         case 1:
1338                 offset = 64;
1339                 break;
1340         default:
1341                 return 0;
1342         }
1343
1344         if (rt2x00dev->rx_status.band == IEEE80211_BAND_5GHZ) {
1345                 if (test_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags)) {
1346                         if (lna == 3 || lna == 2)
1347                                 offset += 10;
1348                 } else {
1349                         if (lna == 3)
1350                                 offset += 6;
1351                         else if (lna == 2)
1352                                 offset += 8;
1353                 }
1354
1355                 rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &eeprom);
1356                 offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_A_1);
1357         } else {
1358                 if (test_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags))
1359                         offset += 14;
1360
1361                 rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &eeprom);
1362                 offset -= rt2x00_get_field16(eeprom, EEPROM_RSSI_OFFSET_BG_1);
1363         }
1364
1365         return rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_AGC) * 2 - offset;
1366 }
1367
1368 static void rt73usb_fill_rxdone(struct queue_entry *entry,
1369                                 struct rxdone_entry_desc *rxdesc)
1370 {
1371         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1372         __le32 *rxd = (__le32 *)entry->skb->data;
1373         struct ieee80211_hdr *hdr =
1374             (struct ieee80211_hdr *)entry->skb->data + entry->queue->desc_size;
1375         int header_size = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
1376         u32 word0;
1377         u32 word1;
1378
1379         rt2x00_desc_read(rxd, 0, &word0);
1380         rt2x00_desc_read(rxd, 1, &word1);
1381
1382         rxdesc->flags = 0;
1383         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1384                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1385
1386         /*
1387          * Obtain the status about this packet.
1388          */
1389         rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1390         rxdesc->rssi = rt73usb_agc_to_rssi(entry->queue->rt2x00dev, word1);
1391         rxdesc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1392         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1393         rxdesc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
1394
1395         /*
1396          * The data behind the ieee80211 header must be
1397          * aligned on a 4 byte boundary.
1398          */
1399         if (header_size % 4 == 0) {
1400                 skb_push(entry->skb, 2);
1401                 memmove(entry->skb->data, entry->skb->data + 2,
1402                         entry->skb->len - 2);
1403         }
1404
1405         /*
1406          * Set descriptor and data pointer.
1407          */
1408         skbdesc->data = entry->skb->data + entry->queue->desc_size;
1409         skbdesc->data_len = entry->queue->data_size;
1410         skbdesc->desc = entry->skb->data;
1411         skbdesc->desc_len = entry->queue->desc_size;
1412
1413         /*
1414          * Remove descriptor from skb buffer and trim the whole thing
1415          * down to only contain data.
1416          */
1417         skb_pull(entry->skb, skbdesc->desc_len);
1418         skb_trim(entry->skb, rxdesc->size);
1419 }
1420
1421 /*
1422  * Device probe functions.
1423  */
1424 static int rt73usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1425 {
1426         u16 word;
1427         u8 *mac;
1428         s8 value;
1429
1430         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1431
1432         /*
1433          * Start validation of the data that has been read.
1434          */
1435         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1436         if (!is_valid_ether_addr(mac)) {
1437                 DECLARE_MAC_BUF(macbuf);
1438
1439                 random_ether_addr(mac);
1440                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1441         }
1442
1443         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1444         if (word == 0xffff) {
1445                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1446                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1447                                    ANTENNA_B);
1448                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1449                                    ANTENNA_B);
1450                 rt2x00_set_field16(&word, EEPROM_ANTENNA_FRAME_TYPE, 0);
1451                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1452                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1453                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF5226);
1454                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1455                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1456         }
1457
1458         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1459         if (word == 0xffff) {
1460                 rt2x00_set_field16(&word, EEPROM_NIC_EXTERNAL_LNA, 0);
1461                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1462                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1463         }
1464
1465         rt2x00_eeprom_read(rt2x00dev, EEPROM_LED, &word);
1466         if (word == 0xffff) {
1467                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_RDY_G, 0);
1468                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_RDY_A, 0);
1469                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_ACT, 0);
1470                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_0, 0);
1471                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_1, 0);
1472                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_2, 0);
1473                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_3, 0);
1474                 rt2x00_set_field16(&word, EEPROM_LED_POLARITY_GPIO_4, 0);
1475                 rt2x00_set_field16(&word, EEPROM_LED_LED_MODE,
1476                                    LED_MODE_DEFAULT);
1477                 rt2x00_eeprom_write(rt2x00dev, EEPROM_LED, word);
1478                 EEPROM(rt2x00dev, "Led: 0x%04x\n", word);
1479         }
1480
1481         rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &word);
1482         if (word == 0xffff) {
1483                 rt2x00_set_field16(&word, EEPROM_FREQ_OFFSET, 0);
1484                 rt2x00_set_field16(&word, EEPROM_FREQ_SEQ, 0);
1485                 rt2x00_eeprom_write(rt2x00dev, EEPROM_FREQ, word);
1486                 EEPROM(rt2x00dev, "Freq: 0x%04x\n", word);
1487         }
1488
1489         rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_BG, &word);
1490         if (word == 0xffff) {
1491                 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_1, 0);
1492                 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_2, 0);
1493                 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_BG, word);
1494                 EEPROM(rt2x00dev, "RSSI OFFSET BG: 0x%04x\n", word);
1495         } else {
1496                 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_BG_1);
1497                 if (value < -10 || value > 10)
1498                         rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_1, 0);
1499                 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_BG_2);
1500                 if (value < -10 || value > 10)
1501                         rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_BG_2, 0);
1502                 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_BG, word);
1503         }
1504
1505         rt2x00_eeprom_read(rt2x00dev, EEPROM_RSSI_OFFSET_A, &word);
1506         if (word == 0xffff) {
1507                 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_1, 0);
1508                 rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_2, 0);
1509                 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_A, word);
1510                 EEPROM(rt2x00dev, "RSSI OFFSET BG: 0x%04x\n", word);
1511         } else {
1512                 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_A_1);
1513                 if (value < -10 || value > 10)
1514                         rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_1, 0);
1515                 value = rt2x00_get_field16(word, EEPROM_RSSI_OFFSET_A_2);
1516                 if (value < -10 || value > 10)
1517                         rt2x00_set_field16(&word, EEPROM_RSSI_OFFSET_A_2, 0);
1518                 rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_OFFSET_A, word);
1519         }
1520
1521         return 0;
1522 }
1523
1524 static int rt73usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1525 {
1526         u32 reg;
1527         u16 value;
1528         u16 eeprom;
1529
1530         /*
1531          * Read EEPROM word for configuration.
1532          */
1533         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1534
1535         /*
1536          * Identify RF chipset.
1537          */
1538         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1539         rt73usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1540         rt2x00_set_chip(rt2x00dev, RT2571, value, reg);
1541
1542         if (!rt2x00_check_rev(&rt2x00dev->chip, 0x25730)) {
1543                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1544                 return -ENODEV;
1545         }
1546
1547         if (!rt2x00_rf(&rt2x00dev->chip, RF5226) &&
1548             !rt2x00_rf(&rt2x00dev->chip, RF2528) &&
1549             !rt2x00_rf(&rt2x00dev->chip, RF5225) &&
1550             !rt2x00_rf(&rt2x00dev->chip, RF2527)) {
1551                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1552                 return -ENODEV;
1553         }
1554
1555         /*
1556          * Identify default antenna configuration.
1557          */
1558         rt2x00dev->default_ant.tx =
1559             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1560         rt2x00dev->default_ant.rx =
1561             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1562
1563         /*
1564          * Read the Frame type.
1565          */
1566         if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_FRAME_TYPE))
1567                 __set_bit(CONFIG_FRAME_TYPE, &rt2x00dev->flags);
1568
1569         /*
1570          * Read frequency offset.
1571          */
1572         rt2x00_eeprom_read(rt2x00dev, EEPROM_FREQ, &eeprom);
1573         rt2x00dev->freq_offset = rt2x00_get_field16(eeprom, EEPROM_FREQ_OFFSET);
1574
1575         /*
1576          * Read external LNA informations.
1577          */
1578         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1579
1580         if (rt2x00_get_field16(eeprom, EEPROM_NIC_EXTERNAL_LNA)) {
1581                 __set_bit(CONFIG_EXTERNAL_LNA_A, &rt2x00dev->flags);
1582                 __set_bit(CONFIG_EXTERNAL_LNA_BG, &rt2x00dev->flags);
1583         }
1584
1585         /*
1586          * Store led settings, for correct led behaviour.
1587          */
1588 #ifdef CONFIG_RT73USB_LEDS
1589         rt2x00_eeprom_read(rt2x00dev, EEPROM_LED, &eeprom);
1590
1591         switch (value) {
1592         case LED_MODE_TXRX_ACTIVITY:
1593         case LED_MODE_ASUS:
1594         case LED_MODE_ALPHA:
1595         case LED_MODE_DEFAULT:
1596                 rt2x00dev->led_flags =
1597                     LED_SUPPORT_RADIO | LED_SUPPORT_ASSOC;
1598                 break;
1599         case LED_MODE_SIGNAL_STRENGTH:
1600                 rt2x00dev->led_flags =
1601                     LED_SUPPORT_RADIO | LED_SUPPORT_ASSOC |
1602                     LED_SUPPORT_QUALITY;
1603                 break;
1604         }
1605
1606         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_LED_MODE, value);
1607         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_0,
1608                            rt2x00_get_field16(eeprom,
1609                                               EEPROM_LED_POLARITY_GPIO_0));
1610         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_1,
1611                            rt2x00_get_field16(eeprom,
1612                                               EEPROM_LED_POLARITY_GPIO_1));
1613         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_2,
1614                            rt2x00_get_field16(eeprom,
1615                                               EEPROM_LED_POLARITY_GPIO_2));
1616         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_3,
1617                            rt2x00_get_field16(eeprom,
1618                                               EEPROM_LED_POLARITY_GPIO_3));
1619         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_GPIO_4,
1620                            rt2x00_get_field16(eeprom,
1621                                               EEPROM_LED_POLARITY_GPIO_4));
1622         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_ACT,
1623                            rt2x00_get_field16(eeprom, EEPROM_LED_POLARITY_ACT));
1624         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_READY_BG,
1625                            rt2x00_get_field16(eeprom,
1626                                               EEPROM_LED_POLARITY_RDY_G));
1627         rt2x00_set_field16(&rt2x00dev->led_mcu_reg, MCU_LEDCS_POLARITY_READY_A,
1628                            rt2x00_get_field16(eeprom,
1629                                               EEPROM_LED_POLARITY_RDY_A));
1630 #endif /* CONFIG_RT73USB_LEDS */
1631
1632         return 0;
1633 }
1634
1635 /*
1636  * RF value list for RF2528
1637  * Supports: 2.4 GHz
1638  */
1639 static const struct rf_channel rf_vals_bg_2528[] = {
1640         { 1,  0x00002c0c, 0x00000786, 0x00068255, 0x000fea0b },
1641         { 2,  0x00002c0c, 0x00000786, 0x00068255, 0x000fea1f },
1642         { 3,  0x00002c0c, 0x0000078a, 0x00068255, 0x000fea0b },
1643         { 4,  0x00002c0c, 0x0000078a, 0x00068255, 0x000fea1f },
1644         { 5,  0x00002c0c, 0x0000078e, 0x00068255, 0x000fea0b },
1645         { 6,  0x00002c0c, 0x0000078e, 0x00068255, 0x000fea1f },
1646         { 7,  0x00002c0c, 0x00000792, 0x00068255, 0x000fea0b },
1647         { 8,  0x00002c0c, 0x00000792, 0x00068255, 0x000fea1f },
1648         { 9,  0x00002c0c, 0x00000796, 0x00068255, 0x000fea0b },
1649         { 10, 0x00002c0c, 0x00000796, 0x00068255, 0x000fea1f },
1650         { 11, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea0b },
1651         { 12, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea1f },
1652         { 13, 0x00002c0c, 0x0000079e, 0x00068255, 0x000fea0b },
1653         { 14, 0x00002c0c, 0x000007a2, 0x00068255, 0x000fea13 },
1654 };
1655
1656 /*
1657  * RF value list for RF5226
1658  * Supports: 2.4 GHz & 5.2 GHz
1659  */
1660 static const struct rf_channel rf_vals_5226[] = {
1661         { 1,  0x00002c0c, 0x00000786, 0x00068255, 0x000fea0b },
1662         { 2,  0x00002c0c, 0x00000786, 0x00068255, 0x000fea1f },
1663         { 3,  0x00002c0c, 0x0000078a, 0x00068255, 0x000fea0b },
1664         { 4,  0x00002c0c, 0x0000078a, 0x00068255, 0x000fea1f },
1665         { 5,  0x00002c0c, 0x0000078e, 0x00068255, 0x000fea0b },
1666         { 6,  0x00002c0c, 0x0000078e, 0x00068255, 0x000fea1f },
1667         { 7,  0x00002c0c, 0x00000792, 0x00068255, 0x000fea0b },
1668         { 8,  0x00002c0c, 0x00000792, 0x00068255, 0x000fea1f },
1669         { 9,  0x00002c0c, 0x00000796, 0x00068255, 0x000fea0b },
1670         { 10, 0x00002c0c, 0x00000796, 0x00068255, 0x000fea1f },
1671         { 11, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea0b },
1672         { 12, 0x00002c0c, 0x0000079a, 0x00068255, 0x000fea1f },
1673         { 13, 0x00002c0c, 0x0000079e, 0x00068255, 0x000fea0b },
1674         { 14, 0x00002c0c, 0x000007a2, 0x00068255, 0x000fea13 },
1675
1676         /* 802.11 UNI / HyperLan 2 */
1677         { 36, 0x00002c0c, 0x0000099a, 0x00098255, 0x000fea23 },
1678         { 40, 0x00002c0c, 0x000009a2, 0x00098255, 0x000fea03 },
1679         { 44, 0x00002c0c, 0x000009a6, 0x00098255, 0x000fea0b },
1680         { 48, 0x00002c0c, 0x000009aa, 0x00098255, 0x000fea13 },
1681         { 52, 0x00002c0c, 0x000009ae, 0x00098255, 0x000fea1b },
1682         { 56, 0x00002c0c, 0x000009b2, 0x00098255, 0x000fea23 },
1683         { 60, 0x00002c0c, 0x000009ba, 0x00098255, 0x000fea03 },
1684         { 64, 0x00002c0c, 0x000009be, 0x00098255, 0x000fea0b },
1685
1686         /* 802.11 HyperLan 2 */
1687         { 100, 0x00002c0c, 0x00000a2a, 0x000b8255, 0x000fea03 },
1688         { 104, 0x00002c0c, 0x00000a2e, 0x000b8255, 0x000fea0b },
1689         { 108, 0x00002c0c, 0x00000a32, 0x000b8255, 0x000fea13 },
1690         { 112, 0x00002c0c, 0x00000a36, 0x000b8255, 0x000fea1b },
1691         { 116, 0x00002c0c, 0x00000a3a, 0x000b8255, 0x000fea23 },
1692         { 120, 0x00002c0c, 0x00000a82, 0x000b8255, 0x000fea03 },
1693         { 124, 0x00002c0c, 0x00000a86, 0x000b8255, 0x000fea0b },
1694         { 128, 0x00002c0c, 0x00000a8a, 0x000b8255, 0x000fea13 },
1695         { 132, 0x00002c0c, 0x00000a8e, 0x000b8255, 0x000fea1b },
1696         { 136, 0x00002c0c, 0x00000a92, 0x000b8255, 0x000fea23 },
1697
1698         /* 802.11 UNII */
1699         { 140, 0x00002c0c, 0x00000a9a, 0x000b8255, 0x000fea03 },
1700         { 149, 0x00002c0c, 0x00000aa2, 0x000b8255, 0x000fea1f },
1701         { 153, 0x00002c0c, 0x00000aa6, 0x000b8255, 0x000fea27 },
1702         { 157, 0x00002c0c, 0x00000aae, 0x000b8255, 0x000fea07 },
1703         { 161, 0x00002c0c, 0x00000ab2, 0x000b8255, 0x000fea0f },
1704         { 165, 0x00002c0c, 0x00000ab6, 0x000b8255, 0x000fea17 },
1705
1706         /* MMAC(Japan)J52 ch 34,38,42,46 */
1707         { 34, 0x00002c0c, 0x0008099a, 0x000da255, 0x000d3a0b },
1708         { 38, 0x00002c0c, 0x0008099e, 0x000da255, 0x000d3a13 },
1709         { 42, 0x00002c0c, 0x000809a2, 0x000da255, 0x000d3a1b },
1710         { 46, 0x00002c0c, 0x000809a6, 0x000da255, 0x000d3a23 },
1711 };
1712
1713 /*
1714  * RF value list for RF5225 & RF2527
1715  * Supports: 2.4 GHz & 5.2 GHz
1716  */
1717 static const struct rf_channel rf_vals_5225_2527[] = {
1718         { 1,  0x00002ccc, 0x00004786, 0x00068455, 0x000ffa0b },
1719         { 2,  0x00002ccc, 0x00004786, 0x00068455, 0x000ffa1f },
1720         { 3,  0x00002ccc, 0x0000478a, 0x00068455, 0x000ffa0b },
1721         { 4,  0x00002ccc, 0x0000478a, 0x00068455, 0x000ffa1f },
1722         { 5,  0x00002ccc, 0x0000478e, 0x00068455, 0x000ffa0b },
1723         { 6,  0x00002ccc, 0x0000478e, 0x00068455, 0x000ffa1f },
1724         { 7,  0x00002ccc, 0x00004792, 0x00068455, 0x000ffa0b },
1725         { 8,  0x00002ccc, 0x00004792, 0x00068455, 0x000ffa1f },
1726         { 9,  0x00002ccc, 0x00004796, 0x00068455, 0x000ffa0b },
1727         { 10, 0x00002ccc, 0x00004796, 0x00068455, 0x000ffa1f },
1728         { 11, 0x00002ccc, 0x0000479a, 0x00068455, 0x000ffa0b },
1729         { 12, 0x00002ccc, 0x0000479a, 0x00068455, 0x000ffa1f },
1730         { 13, 0x00002ccc, 0x0000479e, 0x00068455, 0x000ffa0b },
1731         { 14, 0x00002ccc, 0x000047a2, 0x00068455, 0x000ffa13 },
1732
1733         /* 802.11 UNI / HyperLan 2 */
1734         { 36, 0x00002ccc, 0x0000499a, 0x0009be55, 0x000ffa23 },
1735         { 40, 0x00002ccc, 0x000049a2, 0x0009be55, 0x000ffa03 },
1736         { 44, 0x00002ccc, 0x000049a6, 0x0009be55, 0x000ffa0b },
1737         { 48, 0x00002ccc, 0x000049aa, 0x0009be55, 0x000ffa13 },
1738         { 52, 0x00002ccc, 0x000049ae, 0x0009ae55, 0x000ffa1b },
1739         { 56, 0x00002ccc, 0x000049b2, 0x0009ae55, 0x000ffa23 },
1740         { 60, 0x00002ccc, 0x000049ba, 0x0009ae55, 0x000ffa03 },
1741         { 64, 0x00002ccc, 0x000049be, 0x0009ae55, 0x000ffa0b },
1742
1743         /* 802.11 HyperLan 2 */
1744         { 100, 0x00002ccc, 0x00004a2a, 0x000bae55, 0x000ffa03 },
1745         { 104, 0x00002ccc, 0x00004a2e, 0x000bae55, 0x000ffa0b },
1746         { 108, 0x00002ccc, 0x00004a32, 0x000bae55, 0x000ffa13 },
1747         { 112, 0x00002ccc, 0x00004a36, 0x000bae55, 0x000ffa1b },
1748         { 116, 0x00002ccc, 0x00004a3a, 0x000bbe55, 0x000ffa23 },
1749         { 120, 0x00002ccc, 0x00004a82, 0x000bbe55, 0x000ffa03 },
1750         { 124, 0x00002ccc, 0x00004a86, 0x000bbe55, 0x000ffa0b },
1751         { 128, 0x00002ccc, 0x00004a8a, 0x000bbe55, 0x000ffa13 },
1752         { 132, 0x00002ccc, 0x00004a8e, 0x000bbe55, 0x000ffa1b },
1753         { 136, 0x00002ccc, 0x00004a92, 0x000bbe55, 0x000ffa23 },
1754
1755         /* 802.11 UNII */
1756         { 140, 0x00002ccc, 0x00004a9a, 0x000bbe55, 0x000ffa03 },
1757         { 149, 0x00002ccc, 0x00004aa2, 0x000bbe55, 0x000ffa1f },
1758         { 153, 0x00002ccc, 0x00004aa6, 0x000bbe55, 0x000ffa27 },
1759         { 157, 0x00002ccc, 0x00004aae, 0x000bbe55, 0x000ffa07 },
1760         { 161, 0x00002ccc, 0x00004ab2, 0x000bbe55, 0x000ffa0f },
1761         { 165, 0x00002ccc, 0x00004ab6, 0x000bbe55, 0x000ffa17 },
1762
1763         /* MMAC(Japan)J52 ch 34,38,42,46 */
1764         { 34, 0x00002ccc, 0x0000499a, 0x0009be55, 0x000ffa0b },
1765         { 38, 0x00002ccc, 0x0000499e, 0x0009be55, 0x000ffa13 },
1766         { 42, 0x00002ccc, 0x000049a2, 0x0009be55, 0x000ffa1b },
1767         { 46, 0x00002ccc, 0x000049a6, 0x0009be55, 0x000ffa23 },
1768 };
1769
1770
1771 static void rt73usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1772 {
1773         struct hw_mode_spec *spec = &rt2x00dev->spec;
1774         u8 *txpower;
1775         unsigned int i;
1776
1777         /*
1778          * Initialize all hw fields.
1779          */
1780         rt2x00dev->hw->flags =
1781             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1782             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1783         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1784         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1785         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1786         rt2x00dev->hw->queues = 4;
1787
1788         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1789         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1790                                 rt2x00_eeprom_addr(rt2x00dev,
1791                                                    EEPROM_MAC_ADDR_0));
1792
1793         /*
1794          * Convert tx_power array in eeprom.
1795          */
1796         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_G_START);
1797         for (i = 0; i < 14; i++)
1798                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1799
1800         /*
1801          * Initialize hw_mode information.
1802          */
1803         spec->num_modes = 2;
1804         spec->num_rates = 12;
1805         spec->tx_power_a = NULL;
1806         spec->tx_power_bg = txpower;
1807         spec->tx_power_default = DEFAULT_TXPOWER;
1808
1809         if (rt2x00_rf(&rt2x00dev->chip, RF2528)) {
1810                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2528);
1811                 spec->channels = rf_vals_bg_2528;
1812         } else if (rt2x00_rf(&rt2x00dev->chip, RF5226)) {
1813                 spec->num_channels = ARRAY_SIZE(rf_vals_5226);
1814                 spec->channels = rf_vals_5226;
1815         } else if (rt2x00_rf(&rt2x00dev->chip, RF2527)) {
1816                 spec->num_channels = 14;
1817                 spec->channels = rf_vals_5225_2527;
1818         } else if (rt2x00_rf(&rt2x00dev->chip, RF5225)) {
1819                 spec->num_channels = ARRAY_SIZE(rf_vals_5225_2527);
1820                 spec->channels = rf_vals_5225_2527;
1821         }
1822
1823         if (rt2x00_rf(&rt2x00dev->chip, RF5225) ||
1824             rt2x00_rf(&rt2x00dev->chip, RF5226)) {
1825                 spec->num_modes = 3;
1826
1827                 txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_A_START);
1828                 for (i = 0; i < 14; i++)
1829                         txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1830
1831                 spec->tx_power_a = txpower;
1832         }
1833 }
1834
1835 static int rt73usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1836 {
1837         int retval;
1838
1839         /*
1840          * Allocate eeprom data.
1841          */
1842         retval = rt73usb_validate_eeprom(rt2x00dev);
1843         if (retval)
1844                 return retval;
1845
1846         retval = rt73usb_init_eeprom(rt2x00dev);
1847         if (retval)
1848                 return retval;
1849
1850         /*
1851          * Initialize hw specifications.
1852          */
1853         rt73usb_probe_hw_mode(rt2x00dev);
1854
1855         /*
1856          * This device requires firmware.
1857          */
1858         __set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
1859         __set_bit(DRIVER_REQUIRE_FIRMWARE_CRC_ITU_T, &rt2x00dev->flags);
1860
1861         /*
1862          * Set the rssi offset.
1863          */
1864         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1865
1866         return 0;
1867 }
1868
1869 /*
1870  * IEEE80211 stack callback functions.
1871  */
1872 static void rt73usb_configure_filter(struct ieee80211_hw *hw,
1873                                      unsigned int changed_flags,
1874                                      unsigned int *total_flags,
1875                                      int mc_count,
1876                                      struct dev_addr_list *mc_list)
1877 {
1878         struct rt2x00_dev *rt2x00dev = hw->priv;
1879         u32 reg;
1880
1881         /*
1882          * Mask off any flags we are going to ignore from
1883          * the total_flags field.
1884          */
1885         *total_flags &=
1886             FIF_ALLMULTI |
1887             FIF_FCSFAIL |
1888             FIF_PLCPFAIL |
1889             FIF_CONTROL |
1890             FIF_OTHER_BSS |
1891             FIF_PROMISC_IN_BSS;
1892
1893         /*
1894          * Apply some rules to the filters:
1895          * - Some filters imply different filters to be set.
1896          * - Some things we can't filter out at all.
1897          */
1898         if (mc_count)
1899                 *total_flags |= FIF_ALLMULTI;
1900         if (*total_flags & FIF_OTHER_BSS ||
1901             *total_flags & FIF_PROMISC_IN_BSS)
1902                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1903
1904         /*
1905          * Check if there is any work left for us.
1906          */
1907         if (rt2x00dev->packet_filter == *total_flags)
1908                 return;
1909         rt2x00dev->packet_filter = *total_flags;
1910
1911         /*
1912          * When in atomic context, reschedule and let rt2x00lib
1913          * call this function again.
1914          */
1915         if (in_atomic()) {
1916                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1917                 return;
1918         }
1919
1920         /*
1921          * Start configuration steps.
1922          * Note that the version error will always be dropped
1923          * and broadcast frames will always be accepted since
1924          * there is no filter for it at this time.
1925          */
1926         rt73usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
1927         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_CRC,
1928                            !(*total_flags & FIF_FCSFAIL));
1929         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_PHYSICAL,
1930                            !(*total_flags & FIF_PLCPFAIL));
1931         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_CONTROL,
1932                            !(*total_flags & FIF_CONTROL));
1933         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_NOT_TO_ME,
1934                            !(*total_flags & FIF_PROMISC_IN_BSS));
1935         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_TO_DS,
1936                            !(*total_flags & FIF_PROMISC_IN_BSS));
1937         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_VERSION_ERROR, 1);
1938         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_MULTICAST,
1939                            !(*total_flags & FIF_ALLMULTI));
1940         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_BROADCAST, 0);
1941         rt2x00_set_field32(&reg, TXRX_CSR0_DROP_ACK_CTS, 1);
1942         rt73usb_register_write(rt2x00dev, TXRX_CSR0, reg);
1943 }
1944
1945 static int rt73usb_set_retry_limit(struct ieee80211_hw *hw,
1946                                    u32 short_retry, u32 long_retry)
1947 {
1948         struct rt2x00_dev *rt2x00dev = hw->priv;
1949         u32 reg;
1950
1951         rt73usb_register_read(rt2x00dev, TXRX_CSR4, &reg);
1952         rt2x00_set_field32(&reg, TXRX_CSR4_LONG_RETRY_LIMIT, long_retry);
1953         rt2x00_set_field32(&reg, TXRX_CSR4_SHORT_RETRY_LIMIT, short_retry);
1954         rt73usb_register_write(rt2x00dev, TXRX_CSR4, reg);
1955
1956         return 0;
1957 }
1958
1959 #if 0
1960 /*
1961  * Mac80211 demands get_tsf must be atomic.
1962  * This is not possible for rt73usb since all register access
1963  * functions require sleeping. Untill mac80211 no longer needs
1964  * get_tsf to be atomic, this function should be disabled.
1965  */
1966 static u64 rt73usb_get_tsf(struct ieee80211_hw *hw)
1967 {
1968         struct rt2x00_dev *rt2x00dev = hw->priv;
1969         u64 tsf;
1970         u32 reg;
1971
1972         rt73usb_register_read(rt2x00dev, TXRX_CSR13, &reg);
1973         tsf = (u64) rt2x00_get_field32(reg, TXRX_CSR13_HIGH_TSFTIMER) << 32;
1974         rt73usb_register_read(rt2x00dev, TXRX_CSR12, &reg);
1975         tsf |= rt2x00_get_field32(reg, TXRX_CSR12_LOW_TSFTIMER);
1976
1977         return tsf;
1978 }
1979 #else
1980 #define rt73usb_get_tsf NULL
1981 #endif
1982
1983 static void rt73usb_reset_tsf(struct ieee80211_hw *hw)
1984 {
1985         struct rt2x00_dev *rt2x00dev = hw->priv;
1986
1987         rt73usb_register_write(rt2x00dev, TXRX_CSR12, 0);
1988         rt73usb_register_write(rt2x00dev, TXRX_CSR13, 0);
1989 }
1990
1991 static int rt73usb_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
1992                                  struct ieee80211_tx_control *control)
1993 {
1994         struct rt2x00_dev *rt2x00dev = hw->priv;
1995         struct rt2x00_intf *intf = vif_to_intf(control->vif);
1996         struct skb_frame_desc *skbdesc;
1997         unsigned int beacon_base;
1998         unsigned int timeout;
1999
2000         if (unlikely(!intf->beacon))
2001                 return -ENOBUFS;
2002
2003         /*
2004          * Add the descriptor in front of the skb.
2005          */
2006         skb_push(skb, intf->beacon->queue->desc_size);
2007         memset(skb->data, 0, intf->beacon->queue->desc_size);
2008
2009         /*
2010          * Fill in skb descriptor
2011          */
2012         skbdesc = get_skb_frame_desc(skb);
2013         memset(skbdesc, 0, sizeof(*skbdesc));
2014         skbdesc->data = skb->data + intf->beacon->queue->desc_size;
2015         skbdesc->data_len = skb->len - intf->beacon->queue->desc_size;
2016         skbdesc->desc = skb->data;
2017         skbdesc->desc_len = intf->beacon->queue->desc_size;
2018         skbdesc->entry = intf->beacon;
2019
2020         /*
2021          * mac80211 doesn't provide the control->queue variable
2022          * for beacons. Set our own queue identification so
2023          * it can be used during descriptor initialization.
2024          */
2025         control->queue = RT2X00_BCN_QUEUE_BEACON;
2026         rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
2027
2028         /*
2029          * Write entire beacon with descriptor to register,
2030          * and kick the beacon generator.
2031          */
2032         beacon_base = HW_BEACON_OFFSET(intf->beacon->entry_idx);
2033         timeout = REGISTER_TIMEOUT * (skb->len / sizeof(u32));
2034         rt2x00usb_vendor_request(rt2x00dev, USB_MULTI_WRITE,
2035                                  USB_VENDOR_REQUEST_OUT, beacon_base, 0,
2036                                  skb->data, skb->len, timeout);
2037         rt73usb_kick_tx_queue(rt2x00dev, control->queue);
2038
2039         return 0;
2040 }
2041
2042 static const struct ieee80211_ops rt73usb_mac80211_ops = {
2043         .tx                     = rt2x00mac_tx,
2044         .start                  = rt2x00mac_start,
2045         .stop                   = rt2x00mac_stop,
2046         .add_interface          = rt2x00mac_add_interface,
2047         .remove_interface       = rt2x00mac_remove_interface,
2048         .config                 = rt2x00mac_config,
2049         .config_interface       = rt2x00mac_config_interface,
2050         .configure_filter       = rt73usb_configure_filter,
2051         .get_stats              = rt2x00mac_get_stats,
2052         .set_retry_limit        = rt73usb_set_retry_limit,
2053         .bss_info_changed       = rt2x00mac_bss_info_changed,
2054         .conf_tx                = rt2x00mac_conf_tx,
2055         .get_tx_stats           = rt2x00mac_get_tx_stats,
2056         .get_tsf                = rt73usb_get_tsf,
2057         .reset_tsf              = rt73usb_reset_tsf,
2058         .beacon_update          = rt73usb_beacon_update,
2059 };
2060
2061 static const struct rt2x00lib_ops rt73usb_rt2x00_ops = {
2062         .probe_hw               = rt73usb_probe_hw,
2063         .get_firmware_name      = rt73usb_get_firmware_name,
2064         .load_firmware          = rt73usb_load_firmware,
2065         .initialize             = rt2x00usb_initialize,
2066         .uninitialize           = rt2x00usb_uninitialize,
2067         .init_rxentry           = rt2x00usb_init_rxentry,
2068         .init_txentry           = rt2x00usb_init_txentry,
2069         .set_device_state       = rt73usb_set_device_state,
2070         .link_stats             = rt73usb_link_stats,
2071         .reset_tuner            = rt73usb_reset_tuner,
2072         .link_tuner             = rt73usb_link_tuner,
2073         .led_brightness         = rt73usb_led_brightness,
2074         .write_tx_desc          = rt73usb_write_tx_desc,
2075         .write_tx_data          = rt2x00usb_write_tx_data,
2076         .get_tx_data_len        = rt73usb_get_tx_data_len,
2077         .kick_tx_queue          = rt73usb_kick_tx_queue,
2078         .fill_rxdone            = rt73usb_fill_rxdone,
2079         .config_intf            = rt73usb_config_intf,
2080         .config_preamble        = rt73usb_config_preamble,
2081         .config                 = rt73usb_config,
2082 };
2083
2084 static const struct data_queue_desc rt73usb_queue_rx = {
2085         .entry_num              = RX_ENTRIES,
2086         .data_size              = DATA_FRAME_SIZE,
2087         .desc_size              = RXD_DESC_SIZE,
2088         .priv_size              = sizeof(struct queue_entry_priv_usb_rx),
2089 };
2090
2091 static const struct data_queue_desc rt73usb_queue_tx = {
2092         .entry_num              = TX_ENTRIES,
2093         .data_size              = DATA_FRAME_SIZE,
2094         .desc_size              = TXD_DESC_SIZE,
2095         .priv_size              = sizeof(struct queue_entry_priv_usb_tx),
2096 };
2097
2098 static const struct data_queue_desc rt73usb_queue_bcn = {
2099         .entry_num              = 4 * BEACON_ENTRIES,
2100         .data_size              = MGMT_FRAME_SIZE,
2101         .desc_size              = TXINFO_SIZE,
2102         .priv_size              = sizeof(struct queue_entry_priv_usb_tx),
2103 };
2104
2105 static const struct rt2x00_ops rt73usb_ops = {
2106         .name           = KBUILD_MODNAME,
2107         .max_sta_intf   = 1,
2108         .max_ap_intf    = 4,
2109         .eeprom_size    = EEPROM_SIZE,
2110         .rf_size        = RF_SIZE,
2111         .rx             = &rt73usb_queue_rx,
2112         .tx             = &rt73usb_queue_tx,
2113         .bcn            = &rt73usb_queue_bcn,
2114         .lib            = &rt73usb_rt2x00_ops,
2115         .hw             = &rt73usb_mac80211_ops,
2116 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
2117         .debugfs        = &rt73usb_rt2x00debug,
2118 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
2119 };
2120
2121 /*
2122  * rt73usb module information.
2123  */
2124 static struct usb_device_id rt73usb_device_table[] = {
2125         /* AboCom */
2126         { USB_DEVICE(0x07b8, 0xb21d), USB_DEVICE_DATA(&rt73usb_ops) },
2127         /* Askey */
2128         { USB_DEVICE(0x1690, 0x0722), USB_DEVICE_DATA(&rt73usb_ops) },
2129         /* ASUS */
2130         { USB_DEVICE(0x0b05, 0x1723), USB_DEVICE_DATA(&rt73usb_ops) },
2131         { USB_DEVICE(0x0b05, 0x1724), USB_DEVICE_DATA(&rt73usb_ops) },
2132         /* Belkin */
2133         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt73usb_ops) },
2134         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt73usb_ops) },
2135         { USB_DEVICE(0x050d, 0x905b), USB_DEVICE_DATA(&rt73usb_ops) },
2136         { USB_DEVICE(0x050d, 0x905c), USB_DEVICE_DATA(&rt73usb_ops) },
2137         /* Billionton */
2138         { USB_DEVICE(0x1631, 0xc019), USB_DEVICE_DATA(&rt73usb_ops) },
2139         /* Buffalo */
2140         { USB_DEVICE(0x0411, 0x00f4), USB_DEVICE_DATA(&rt73usb_ops) },
2141         /* CNet */
2142         { USB_DEVICE(0x1371, 0x9022), USB_DEVICE_DATA(&rt73usb_ops) },
2143         { USB_DEVICE(0x1371, 0x9032), USB_DEVICE_DATA(&rt73usb_ops) },
2144         /* Conceptronic */
2145         { USB_DEVICE(0x14b2, 0x3c22), USB_DEVICE_DATA(&rt73usb_ops) },
2146         /* D-Link */
2147         { USB_DEVICE(0x07d1, 0x3c03), USB_DEVICE_DATA(&rt73usb_ops) },
2148         { USB_DEVICE(0x07d1, 0x3c04), USB_DEVICE_DATA(&rt73usb_ops) },
2149         /* Gemtek */
2150         { USB_DEVICE(0x15a9, 0x0004), USB_DEVICE_DATA(&rt73usb_ops) },
2151         /* Gigabyte */
2152         { USB_DEVICE(0x1044, 0x8008), USB_DEVICE_DATA(&rt73usb_ops) },
2153         { USB_DEVICE(0x1044, 0x800a), USB_DEVICE_DATA(&rt73usb_ops) },
2154         /* Huawei-3Com */
2155         { USB_DEVICE(0x1472, 0x0009), USB_DEVICE_DATA(&rt73usb_ops) },
2156         /* Hercules */
2157         { USB_DEVICE(0x06f8, 0xe010), USB_DEVICE_DATA(&rt73usb_ops) },
2158         { USB_DEVICE(0x06f8, 0xe020), USB_DEVICE_DATA(&rt73usb_ops) },
2159         /* Linksys */
2160         { USB_DEVICE(0x13b1, 0x0020), USB_DEVICE_DATA(&rt73usb_ops) },
2161         { USB_DEVICE(0x13b1, 0x0023), USB_DEVICE_DATA(&rt73usb_ops) },
2162         /* MSI */
2163         { USB_DEVICE(0x0db0, 0x6877), USB_DEVICE_DATA(&rt73usb_ops) },
2164         { USB_DEVICE(0x0db0, 0x6874), USB_DEVICE_DATA(&rt73usb_ops) },
2165         { USB_DEVICE(0x0db0, 0xa861), USB_DEVICE_DATA(&rt73usb_ops) },
2166         { USB_DEVICE(0x0db0, 0xa874), USB_DEVICE_DATA(&rt73usb_ops) },
2167         /* Ralink */
2168         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt73usb_ops) },
2169         { USB_DEVICE(0x148f, 0x2671), USB_DEVICE_DATA(&rt73usb_ops) },
2170         /* Qcom */
2171         { USB_DEVICE(0x18e8, 0x6196), USB_DEVICE_DATA(&rt73usb_ops) },
2172         { USB_DEVICE(0x18e8, 0x6229), USB_DEVICE_DATA(&rt73usb_ops) },
2173         { USB_DEVICE(0x18e8, 0x6238), USB_DEVICE_DATA(&rt73usb_ops) },
2174         /* Senao */
2175         { USB_DEVICE(0x1740, 0x7100), USB_DEVICE_DATA(&rt73usb_ops) },
2176         /* Sitecom */
2177         { USB_DEVICE(0x0df6, 0x9712), USB_DEVICE_DATA(&rt73usb_ops) },
2178         { USB_DEVICE(0x0df6, 0x90ac), USB_DEVICE_DATA(&rt73usb_ops) },
2179         /* Surecom */
2180         { USB_DEVICE(0x0769, 0x31f3), USB_DEVICE_DATA(&rt73usb_ops) },
2181         /* Planex */
2182         { USB_DEVICE(0x2019, 0xab01), USB_DEVICE_DATA(&rt73usb_ops) },
2183         { USB_DEVICE(0x2019, 0xab50), USB_DEVICE_DATA(&rt73usb_ops) },
2184         { 0, }
2185 };
2186
2187 MODULE_AUTHOR(DRV_PROJECT);
2188 MODULE_VERSION(DRV_VERSION);
2189 MODULE_DESCRIPTION("Ralink RT73 USB Wireless LAN driver.");
2190 MODULE_SUPPORTED_DEVICE("Ralink RT2571W & RT2671 USB chipset based cards");
2191 MODULE_DEVICE_TABLE(usb, rt73usb_device_table);
2192 MODULE_FIRMWARE(FIRMWARE_RT2571);
2193 MODULE_LICENSE("GPL");
2194
2195 static struct usb_driver rt73usb_driver = {
2196         .name           = KBUILD_MODNAME,
2197         .id_table       = rt73usb_device_table,
2198         .probe          = rt2x00usb_probe,
2199         .disconnect     = rt2x00usb_disconnect,
2200         .suspend        = rt2x00usb_suspend,
2201         .resume         = rt2x00usb_resume,
2202 };
2203
2204 static int __init rt73usb_init(void)
2205 {
2206         return usb_register(&rt73usb_driver);
2207 }
2208
2209 static void __exit rt73usb_exit(void)
2210 {
2211         usb_deregister(&rt73usb_driver);
2212 }
2213
2214 module_init(rt73usb_init);
2215 module_exit(rt73usb_exit);