git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/rt2x00/rt2400pci.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: rt2400pci
  23         Abstract: rt2400pci device specific routines.
  24         Supported chipsets: RT2460.
  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/pci.h>
  33 #include <linux/eeprom_93cx6.h>
  34
  35 #include "rt2x00.h"
  36 #include "rt2x00pci.h"
  37 #include "rt2400pci.h"
  38
  39 /*
  40  * Register access.
  41  * All access to the CSR registers will go through the methods
  42  * rt2x00pci_register_read and rt2x00pci_register_write.
  43  * BBP and RF register require indirect register access,
  44  * and use the CSR registers BBPCSR and RFCSR to achieve this.
  45  * These indirect registers work with busy bits,
  46  * and we will try maximal REGISTER_BUSY_COUNT times to access
  47  * the register while taking a REGISTER_BUSY_DELAY us delay
  48  * between each attampt. When the busy bit is still set at that time,
  49  * the access attempt is considered to have failed,
  50  * and we will print an error.
  51  */
  52 static u32 rt2400pci_bbp_check(struct rt2x00_dev *rt2x00dev)
  53 {
  54         u32 reg;
  55         unsigned int i;
  56
  57         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
  58                 rt2x00pci_register_read(rt2x00dev, BBPCSR, &reg);
  59                 if (!rt2x00_get_field32(reg, BBPCSR_BUSY))
  60                         break;
  61                 udelay(REGISTER_BUSY_DELAY);
  62         }
  63
  64         return reg;
  65 }
  66
  67 static void rt2400pci_bbp_write(struct rt2x00_dev *rt2x00dev,
  68                                 const unsigned int word, const u8 value)
  69 {
  70         u32 reg;
  71
  72         /*
  73          * Wait until the BBP becomes ready.
  74          */
  75         reg = rt2400pci_bbp_check(rt2x00dev);
  76         if (rt2x00_get_field32(reg, BBPCSR_BUSY)) {
  77                 ERROR(rt2x00dev, "BBPCSR register busy. Write failed.\n");
  78                 return;
  79         }
  80
  81         /*
  82          * Write the data into the BBP.
  83          */
  84         reg = 0;
  85         rt2x00_set_field32(&reg, BBPCSR_VALUE, value);
  86         rt2x00_set_field32(&reg, BBPCSR_REGNUM, word);
  87         rt2x00_set_field32(&reg, BBPCSR_BUSY, 1);
  88         rt2x00_set_field32(&reg, BBPCSR_WRITE_CONTROL, 1);
  89
  90         rt2x00pci_register_write(rt2x00dev, BBPCSR, reg);
  91 }
  92
  93 static void rt2400pci_bbp_read(struct rt2x00_dev *rt2x00dev,
  94                                const unsigned int word, u8 *value)
  95 {
  96         u32 reg;
  97
  98         /*
  99          * Wait until the BBP becomes ready.
 100          */
 101         reg = rt2400pci_bbp_check(rt2x00dev);
 102         if (rt2x00_get_field32(reg, BBPCSR_BUSY)) {
 103                 ERROR(rt2x00dev, "BBPCSR register busy. Read failed.\n");
 104                 return;
 105         }
 106
 107         /*
 108          * Write the request into the BBP.
 109          */
 110         reg = 0;
 111         rt2x00_set_field32(&reg, BBPCSR_REGNUM, word);
 112         rt2x00_set_field32(&reg, BBPCSR_BUSY, 1);
 113         rt2x00_set_field32(&reg, BBPCSR_WRITE_CONTROL, 0);
 114
 115         rt2x00pci_register_write(rt2x00dev, BBPCSR, reg);
 116
 117         /*
 118          * Wait until the BBP becomes ready.
 119          */
 120         reg = rt2400pci_bbp_check(rt2x00dev);
 121         if (rt2x00_get_field32(reg, BBPCSR_BUSY)) {
 122                 ERROR(rt2x00dev, "BBPCSR register busy. Read failed.\n");
 123                 *value = 0xff;
 124                 return;
 125         }
 126
 127         *value = rt2x00_get_field32(reg, BBPCSR_VALUE);
 128 }
 129
 130 static void rt2400pci_rf_write(struct rt2x00_dev *rt2x00dev,
 131                                const unsigned int word, const u32 value)
 132 {
 133         u32 reg;
 134         unsigned int i;
 135
 136         if (!word)
 137                 return;
 138
 139         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 140                 rt2x00pci_register_read(rt2x00dev, RFCSR, &reg);
 141                 if (!rt2x00_get_field32(reg, RFCSR_BUSY))
 142                         goto rf_write;
 143                 udelay(REGISTER_BUSY_DELAY);
 144         }
 145
 146         ERROR(rt2x00dev, "RFCSR register busy. Write failed.\n");
 147         return;
 148
 149 rf_write:
 150         reg = 0;
 151         rt2x00_set_field32(&reg, RFCSR_VALUE, value);
 152         rt2x00_set_field32(&reg, RFCSR_NUMBER_OF_BITS, 20);
 153         rt2x00_set_field32(&reg, RFCSR_IF_SELECT, 0);
 154         rt2x00_set_field32(&reg, RFCSR_BUSY, 1);
 155
 156         rt2x00pci_register_write(rt2x00dev, RFCSR, reg);
 157         rt2x00_rf_write(rt2x00dev, word, value);
 158 }
 159
 160 static void rt2400pci_eepromregister_read(struct eeprom_93cx6 *eeprom)
 161 {
 162         struct rt2x00_dev *rt2x00dev = eeprom->data;
 163         u32 reg;
 164
 165         rt2x00pci_register_read(rt2x00dev, CSR21, &reg);
 166
 167         eeprom->reg_data_in = !!rt2x00_get_field32(reg, CSR21_EEPROM_DATA_IN);
 168         eeprom->reg_data_out = !!rt2x00_get_field32(reg, CSR21_EEPROM_DATA_OUT);
 169         eeprom->reg_data_clock =
 170             !!rt2x00_get_field32(reg, CSR21_EEPROM_DATA_CLOCK);
 171         eeprom->reg_chip_select =
 172             !!rt2x00_get_field32(reg, CSR21_EEPROM_CHIP_SELECT);
 173 }
 174
 175 static void rt2400pci_eepromregister_write(struct eeprom_93cx6 *eeprom)
 176 {
 177         struct rt2x00_dev *rt2x00dev = eeprom->data;
 178         u32 reg = 0;
 179
 180         rt2x00_set_field32(&reg, CSR21_EEPROM_DATA_IN, !!eeprom->reg_data_in);
 181         rt2x00_set_field32(&reg, CSR21_EEPROM_DATA_OUT, !!eeprom->reg_data_out);
 182         rt2x00_set_field32(&reg, CSR21_EEPROM_DATA_CLOCK,
 183                            !!eeprom->reg_data_clock);
 184         rt2x00_set_field32(&reg, CSR21_EEPROM_CHIP_SELECT,
 185                            !!eeprom->reg_chip_select);
 186
 187         rt2x00pci_register_write(rt2x00dev, CSR21, reg);
 188 }
 189
 190 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 191 #define CSR_OFFSET(__word)      ( CSR_REG_BASE + ((__word) * sizeof(u32)) )
 192
 193 static void rt2400pci_read_csr(struct rt2x00_dev *rt2x00dev,
 194                                const unsigned int word, u32 *data)
 195 {
 196         rt2x00pci_register_read(rt2x00dev, CSR_OFFSET(word), data);
 197 }
 198
 199 static void rt2400pci_write_csr(struct rt2x00_dev *rt2x00dev,
 200                                 const unsigned int word, u32 data)
 201 {
 202         rt2x00pci_register_write(rt2x00dev, CSR_OFFSET(word), data);
 203 }
 204
 205 static const struct rt2x00debug rt2400pci_rt2x00debug = {
 206         .owner  = THIS_MODULE,
 207         .csr    = {
 208                 .read           = rt2400pci_read_csr,
 209                 .write          = rt2400pci_write_csr,
 210                 .word_size      = sizeof(u32),
 211                 .word_count     = CSR_REG_SIZE / sizeof(u32),
 212         },
 213         .eeprom = {
 214                 .read           = rt2x00_eeprom_read,
 215                 .write          = rt2x00_eeprom_write,
 216                 .word_size      = sizeof(u16),
 217                 .word_count     = EEPROM_SIZE / sizeof(u16),
 218         },
 219         .bbp    = {
 220                 .read           = rt2400pci_bbp_read,
 221                 .write          = rt2400pci_bbp_write,
 222                 .word_size      = sizeof(u8),
 223                 .word_count     = BBP_SIZE / sizeof(u8),
 224         },
 225         .rf     = {
 226                 .read           = rt2x00_rf_read,
 227                 .write          = rt2400pci_rf_write,
 228                 .word_size      = sizeof(u32),
 229                 .word_count     = RF_SIZE / sizeof(u32),
 230         },
 231 };
 232 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 233
 234 #ifdef CONFIG_RT2400PCI_RFKILL
 235 static int rt2400pci_rfkill_poll(struct rt2x00_dev *rt2x00dev)
 236 {
 237         u32 reg;
 238
 239         rt2x00pci_register_read(rt2x00dev, GPIOCSR, &reg);
 240         return rt2x00_get_field32(reg, GPIOCSR_BIT0);
 241 }
 242 #else
 243 #define rt2400pci_rfkill_poll   NULL
 244 #endif /* CONFIG_RT2400PCI_RFKILL */
 245
 246 #ifdef CONFIG_RT2400PCI_LEDS
 247 static void rt2400pci_brightness_set(struct led_classdev *led_cdev,
 248                                      enum led_brightness brightness)
 249 {
 250         struct rt2x00_led *led =
 251             container_of(led_cdev, struct rt2x00_led, led_dev);
 252         unsigned int enabled = brightness != LED_OFF;
 253         u32 reg;
 254
 255         rt2x00pci_register_read(led->rt2x00dev, LEDCSR, &reg);
 256
 257         if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC)
 258                 rt2x00_set_field32(&reg, LEDCSR_LINK, enabled);
 259         else if (led->type == LED_TYPE_ACTIVITY)
 260                 rt2x00_set_field32(&reg, LEDCSR_ACTIVITY, enabled);
 261
 262         rt2x00pci_register_write(led->rt2x00dev, LEDCSR, reg);
 263 }
 264
 265 static int rt2400pci_blink_set(struct led_classdev *led_cdev,
 266                                unsigned long *delay_on,
 267                                unsigned long *delay_off)
 268 {
 269         struct rt2x00_led *led =
 270             container_of(led_cdev, struct rt2x00_led, led_dev);
 271         u32 reg;
 272
 273         rt2x00pci_register_read(led->rt2x00dev, LEDCSR, &reg);
 274         rt2x00_set_field32(&reg, LEDCSR_ON_PERIOD, *delay_on);
 275         rt2x00_set_field32(&reg, LEDCSR_OFF_PERIOD, *delay_off);
 276         rt2x00pci_register_write(led->rt2x00dev, LEDCSR, reg);
 277
 278         return 0;
 279 }
 280 #endif /* CONFIG_RT2400PCI_LEDS */
 281
 282 /*
 283  * Configuration handlers.
 284  */
 285 static void rt2400pci_config_filter(struct rt2x00_dev *rt2x00dev,
 286                                     const unsigned int filter_flags)
 287 {
 288         u32 reg;
 289
 290         /*
 291          * Start configuration steps.
 292          * Note that the version error will always be dropped
 293          * since there is no filter for it at this time.
 294          */
 295         rt2x00pci_register_read(rt2x00dev, RXCSR0, &reg);
 296         rt2x00_set_field32(&reg, RXCSR0_DROP_CRC,
 297                            !(filter_flags & FIF_FCSFAIL));
 298         rt2x00_set_field32(&reg, RXCSR0_DROP_PHYSICAL,
 299                            !(filter_flags & FIF_PLCPFAIL));
 300         rt2x00_set_field32(&reg, RXCSR0_DROP_CONTROL,
 301                            !(filter_flags & FIF_CONTROL));
 302         rt2x00_set_field32(&reg, RXCSR0_DROP_NOT_TO_ME,
 303                            !(filter_flags & FIF_PROMISC_IN_BSS));
 304         rt2x00_set_field32(&reg, RXCSR0_DROP_TODS,
 305                            !(filter_flags & FIF_PROMISC_IN_BSS) &&
 306                            !rt2x00dev->intf_ap_count);
 307         rt2x00_set_field32(&reg, RXCSR0_DROP_VERSION_ERROR, 1);
 308         rt2x00pci_register_write(rt2x00dev, RXCSR0, reg);
 309 }
 310
 311 static void rt2400pci_config_intf(struct rt2x00_dev *rt2x00dev,
 312                                   struct rt2x00_intf *intf,
 313                                   struct rt2x00intf_conf *conf,
 314                                   const unsigned int flags)
 315 {
 316         unsigned int bcn_preload;
 317         u32 reg;
 318
 319         if (flags & CONFIG_UPDATE_TYPE) {
 320                 /*
 321                  * Enable beacon config
 322                  */
 323                 bcn_preload = PREAMBLE + get_duration(IEEE80211_HEADER, 20);
 324                 rt2x00pci_register_read(rt2x00dev, BCNCSR1, &reg);
 325                 rt2x00_set_field32(&reg, BCNCSR1_PRELOAD, bcn_preload);
 326                 rt2x00pci_register_write(rt2x00dev, BCNCSR1, reg);
 327
 328                 /*
 329                  * Enable synchronisation.
 330                  */
 331                 rt2x00pci_register_read(rt2x00dev, CSR14, &reg);
 332                 rt2x00_set_field32(&reg, CSR14_TSF_COUNT, 1);
 333                 rt2x00_set_field32(&reg, CSR14_TSF_SYNC, conf->sync);
 334                 rt2x00_set_field32(&reg, CSR14_TBCN, 1);
 335                 rt2x00pci_register_write(rt2x00dev, CSR14, reg);
 336         }
 337
 338         if (flags & CONFIG_UPDATE_MAC)
 339                 rt2x00pci_register_multiwrite(rt2x00dev, CSR3,
 340                                               conf->mac, sizeof(conf->mac));
 341
 342         if (flags & CONFIG_UPDATE_BSSID)
 343                 rt2x00pci_register_multiwrite(rt2x00dev, CSR5,
 344                                               conf->bssid, sizeof(conf->bssid));
 345 }
 346
 347 static void rt2400pci_config_erp(struct rt2x00_dev *rt2x00dev,
 348                                  struct rt2x00lib_erp *erp)
 349 {
 350         int preamble_mask;
 351         u32 reg;
 352
 353         /*
 354          * When short preamble is enabled, we should set bit 0x08
 355          */
 356         preamble_mask = erp->short_preamble << 3;
 357
 358         rt2x00pci_register_read(rt2x00dev, TXCSR1, &reg);
 359         rt2x00_set_field32(&reg, TXCSR1_ACK_TIMEOUT,
 360                            erp->ack_timeout);
 361         rt2x00_set_field32(&reg, TXCSR1_ACK_CONSUME_TIME,
 362                            erp->ack_consume_time);
 363         rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
 364
 365         rt2x00pci_register_read(rt2x00dev, ARCSR2, &reg);
 366         rt2x00_set_field32(&reg, ARCSR2_SIGNAL, 0x00);
 367         rt2x00_set_field32(&reg, ARCSR2_SERVICE, 0x04);
 368         rt2x00_set_field32(&reg, ARCSR2_LENGTH, get_duration(ACK_SIZE, 10));
 369         rt2x00pci_register_write(rt2x00dev, ARCSR2, reg);
 370
 371         rt2x00pci_register_read(rt2x00dev, ARCSR3, &reg);
 372         rt2x00_set_field32(&reg, ARCSR3_SIGNAL, 0x01 | preamble_mask);
 373         rt2x00_set_field32(&reg, ARCSR3_SERVICE, 0x04);
 374         rt2x00_set_field32(&reg, ARCSR2_LENGTH, get_duration(ACK_SIZE, 20));
 375         rt2x00pci_register_write(rt2x00dev, ARCSR3, reg);
 376
 377         rt2x00pci_register_read(rt2x00dev, ARCSR4, &reg);
 378         rt2x00_set_field32(&reg, ARCSR4_SIGNAL, 0x02 | preamble_mask);
 379         rt2x00_set_field32(&reg, ARCSR4_SERVICE, 0x04);
 380         rt2x00_set_field32(&reg, ARCSR2_LENGTH, get_duration(ACK_SIZE, 55));
 381         rt2x00pci_register_write(rt2x00dev, ARCSR4, reg);
 382
 383         rt2x00pci_register_read(rt2x00dev, ARCSR5, &reg);
 384         rt2x00_set_field32(&reg, ARCSR5_SIGNAL, 0x03 | preamble_mask);
 385         rt2x00_set_field32(&reg, ARCSR5_SERVICE, 0x84);
 386         rt2x00_set_field32(&reg, ARCSR2_LENGTH, get_duration(ACK_SIZE, 110));
 387         rt2x00pci_register_write(rt2x00dev, ARCSR5, reg);
 388 }
 389
 390 static void rt2400pci_config_phymode(struct rt2x00_dev *rt2x00dev,
 391                                      const int basic_rate_mask)
 392 {
 393         rt2x00pci_register_write(rt2x00dev, ARCSR1, basic_rate_mask);
 394 }
 395
 396 static void rt2400pci_config_channel(struct rt2x00_dev *rt2x00dev,
 397                                      struct rf_channel *rf)
 398 {
 399         /*
 400          * Switch on tuning bits.
 401          */
 402         rt2x00_set_field32(&rf->rf1, RF1_TUNER, 1);
 403         rt2x00_set_field32(&rf->rf3, RF3_TUNER, 1);
 404
 405         rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
 406         rt2400pci_rf_write(rt2x00dev, 2, rf->rf2);
 407         rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
 408
 409         /*
 410          * RF2420 chipset don't need any additional actions.
 411          */
 412         if (rt2x00_rf(&rt2x00dev->chip, RF2420))
 413                 return;
 414
 415         /*
 416          * For the RT2421 chipsets we need to write an invalid
 417          * reference clock rate to activate auto_tune.
 418          * After that we set the value back to the correct channel.
 419          */
 420         rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
 421         rt2400pci_rf_write(rt2x00dev, 2, 0x000c2a32);
 422         rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
 423
 424         msleep(1);
 425
 426         rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
 427         rt2400pci_rf_write(rt2x00dev, 2, rf->rf2);
 428         rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
 429
 430         msleep(1);
 431
 432         /*
 433          * Switch off tuning bits.
 434          */
 435         rt2x00_set_field32(&rf->rf1, RF1_TUNER, 0);
 436         rt2x00_set_field32(&rf->rf3, RF3_TUNER, 0);
 437
 438         rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
 439         rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
 440
 441         /*
 442          * Clear false CRC during channel switch.
 443          */
 444         rt2x00pci_register_read(rt2x00dev, CNT0, &rf->rf1);
 445 }
 446
 447 static void rt2400pci_config_txpower(struct rt2x00_dev *rt2x00dev, int txpower)
 448 {
 449         rt2400pci_bbp_write(rt2x00dev, 3, TXPOWER_TO_DEV(txpower));
 450 }
 451
 452 static void rt2400pci_config_antenna(struct rt2x00_dev *rt2x00dev,
 453                                      struct antenna_setup *ant)
 454 {
 455         u8 r1;
 456         u8 r4;
 457
 458         /*
 459          * We should never come here because rt2x00lib is supposed
 460          * to catch this and send us the correct antenna explicitely.
 461          */
 462         BUG_ON(ant->rx == ANTENNA_SW_DIVERSITY ||
 463                ant->tx == ANTENNA_SW_DIVERSITY);
 464
 465         rt2400pci_bbp_read(rt2x00dev, 4, &r4);
 466         rt2400pci_bbp_read(rt2x00dev, 1, &r1);
 467
 468         /*
 469          * Configure the TX antenna.
 470          */
 471         switch (ant->tx) {
 472         case ANTENNA_HW_DIVERSITY:
 473                 rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 1);
 474                 break;
 475         case ANTENNA_A:
 476                 rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 0);
 477                 break;
 478         case ANTENNA_B:
 479         default:
 480                 rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 2);
 481                 break;
 482         }
 483
 484         /*
 485          * Configure the RX antenna.
 486          */
 487         switch (ant->rx) {
 488         case ANTENNA_HW_DIVERSITY:
 489                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 1);
 490                 break;
 491         case ANTENNA_A:
 492                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 0);
 493                 break;
 494         case ANTENNA_B:
 495         default:
 496                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 2);
 497                 break;
 498         }
 499
 500         rt2400pci_bbp_write(rt2x00dev, 4, r4);
 501         rt2400pci_bbp_write(rt2x00dev, 1, r1);
 502 }
 503
 504 static void rt2400pci_config_duration(struct rt2x00_dev *rt2x00dev,
 505                                       struct rt2x00lib_conf *libconf)
 506 {
 507         u32 reg;
 508
 509         rt2x00pci_register_read(rt2x00dev, CSR11, &reg);
 510         rt2x00_set_field32(&reg, CSR11_SLOT_TIME, libconf->slot_time);
 511         rt2x00pci_register_write(rt2x00dev, CSR11, reg);
 512
 513         rt2x00pci_register_read(rt2x00dev, CSR18, &reg);
 514         rt2x00_set_field32(&reg, CSR18_SIFS, libconf->sifs);
 515         rt2x00_set_field32(&reg, CSR18_PIFS, libconf->pifs);
 516         rt2x00pci_register_write(rt2x00dev, CSR18, reg);
 517
 518         rt2x00pci_register_read(rt2x00dev, CSR19, &reg);
 519         rt2x00_set_field32(&reg, CSR19_DIFS, libconf->difs);
 520         rt2x00_set_field32(&reg, CSR19_EIFS, libconf->eifs);
 521         rt2x00pci_register_write(rt2x00dev, CSR19, reg);
 522
 523         rt2x00pci_register_read(rt2x00dev, TXCSR1, &reg);
 524         rt2x00_set_field32(&reg, TXCSR1_TSF_OFFSET, IEEE80211_HEADER);
 525         rt2x00_set_field32(&reg, TXCSR1_AUTORESPONDER, 1);
 526         rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
 527
 528         rt2x00pci_register_read(rt2x00dev, CSR12, &reg);
 529         rt2x00_set_field32(&reg, CSR12_BEACON_INTERVAL,
 530                            libconf->conf->beacon_int * 16);
 531         rt2x00_set_field32(&reg, CSR12_CFP_MAX_DURATION,
 532                            libconf->conf->beacon_int * 16);
 533         rt2x00pci_register_write(rt2x00dev, CSR12, reg);
 534 }
 535
 536 static void rt2400pci_config(struct rt2x00_dev *rt2x00dev,
 537                              struct rt2x00lib_conf *libconf,
 538                              const unsigned int flags)
 539 {
 540         if (flags & CONFIG_UPDATE_PHYMODE)
 541                 rt2400pci_config_phymode(rt2x00dev, libconf->basic_rates);
 542         if (flags & CONFIG_UPDATE_CHANNEL)
 543                 rt2400pci_config_channel(rt2x00dev, &libconf->rf);
 544         if (flags & CONFIG_UPDATE_TXPOWER)
 545                 rt2400pci_config_txpower(rt2x00dev,
 546                                          libconf->conf->power_level);
 547         if (flags & CONFIG_UPDATE_ANTENNA)
 548                 rt2400pci_config_antenna(rt2x00dev, &libconf->ant);
 549         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
 550                 rt2400pci_config_duration(rt2x00dev, libconf);
 551 }
 552
 553 static void rt2400pci_config_cw(struct rt2x00_dev *rt2x00dev,
 554                                 const int cw_min, const int cw_max)
 555 {
 556         u32 reg;
 557
 558         rt2x00pci_register_read(rt2x00dev, CSR11, &reg);
 559         rt2x00_set_field32(&reg, CSR11_CWMIN, cw_min);
 560         rt2x00_set_field32(&reg, CSR11_CWMAX, cw_max);
 561         rt2x00pci_register_write(rt2x00dev, CSR11, reg);
 562 }
 563
 564 /*
 565  * Link tuning
 566  */
 567 static void rt2400pci_link_stats(struct rt2x00_dev *rt2x00dev,
 568                                  struct link_qual *qual)
 569 {
 570         u32 reg;
 571         u8 bbp;
 572
 573         /*
 574          * Update FCS error count from register.
 575          */
 576         rt2x00pci_register_read(rt2x00dev, CNT0, &reg);
 577         qual->rx_failed = rt2x00_get_field32(reg, CNT0_FCS_ERROR);
 578
 579         /*
 580          * Update False CCA count from register.
 581          */
 582         rt2400pci_bbp_read(rt2x00dev, 39, &bbp);
 583         qual->false_cca = bbp;
 584 }
 585
 586 static void rt2400pci_reset_tuner(struct rt2x00_dev *rt2x00dev)
 587 {
 588         rt2400pci_bbp_write(rt2x00dev, 13, 0x08);
 589         rt2x00dev->link.vgc_level = 0x08;
 590 }
 591
 592 static void rt2400pci_link_tuner(struct rt2x00_dev *rt2x00dev)
 593 {
 594         u8 reg;
 595
 596         /*
 597          * The link tuner should not run longer then 60 seconds,
 598          * and should run once every 2 seconds.
 599          */
 600         if (rt2x00dev->link.count > 60 || !(rt2x00dev->link.count & 1))
 601                 return;
 602
 603         /*
 604          * Base r13 link tuning on the false cca count.
 605          */
 606         rt2400pci_bbp_read(rt2x00dev, 13, &reg);
 607
 608         if (rt2x00dev->link.qual.false_cca > 512 && reg < 0x20) {
 609                 rt2400pci_bbp_write(rt2x00dev, 13, ++reg);
 610                 rt2x00dev->link.vgc_level = reg;
 611         } else if (rt2x00dev->link.qual.false_cca < 100 && reg > 0x08) {
 612                 rt2400pci_bbp_write(rt2x00dev, 13, --reg);
 613                 rt2x00dev->link.vgc_level = reg;
 614         }
 615 }
 616
 617 /*
 618  * Initialization functions.
 619  */
 620 static void rt2400pci_init_rxentry(struct rt2x00_dev *rt2x00dev,
 621                                    struct queue_entry *entry)
 622 {
 623         struct queue_entry_priv_pci_rx *priv_rx = entry->priv_data;
 624         u32 word;
 625
 626         rt2x00_desc_read(priv_rx->desc, 2, &word);
 627         rt2x00_set_field32(&word, RXD_W2_BUFFER_LENGTH,
 628                            entry->queue->data_size);
 629         rt2x00_desc_write(priv_rx->desc, 2, word);
 630
 631         rt2x00_desc_read(priv_rx->desc, 1, &word);
 632         rt2x00_set_field32(&word, RXD_W1_BUFFER_ADDRESS, priv_rx->data_dma);
 633         rt2x00_desc_write(priv_rx->desc, 1, word);
 634
 635         rt2x00_desc_read(priv_rx->desc, 0, &word);
 636         rt2x00_set_field32(&word, RXD_W0_OWNER_NIC, 1);
 637         rt2x00_desc_write(priv_rx->desc, 0, word);
 638 }
 639
 640 static void rt2400pci_init_txentry(struct rt2x00_dev *rt2x00dev,
 641                                    struct queue_entry *entry)
 642 {
 643         struct queue_entry_priv_pci_tx *priv_tx = entry->priv_data;
 644         u32 word;
 645
 646         rt2x00_desc_read(priv_tx->desc, 1, &word);
 647         rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, priv_tx->data_dma);
 648         rt2x00_desc_write(priv_tx->desc, 1, word);
 649
 650         rt2x00_desc_read(priv_tx->desc, 2, &word);
 651         rt2x00_set_field32(&word, TXD_W2_BUFFER_LENGTH,
 652                            entry->queue->data_size);
 653         rt2x00_desc_write(priv_tx->desc, 2, word);
 654
 655         rt2x00_desc_read(priv_tx->desc, 0, &word);
 656         rt2x00_set_field32(&word, TXD_W0_VALID, 0);
 657         rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 0);
 658         rt2x00_desc_write(priv_tx->desc, 0, word);
 659 }
 660
 661 static int rt2400pci_init_queues(struct rt2x00_dev *rt2x00dev)
 662 {
 663         struct queue_entry_priv_pci_rx *priv_rx;
 664         struct queue_entry_priv_pci_tx *priv_tx;
 665         u32 reg;
 666
 667         /*
 668          * Initialize registers.
 669          */
 670         rt2x00pci_register_read(rt2x00dev, TXCSR2, &reg);
 671         rt2x00_set_field32(&reg, TXCSR2_TXD_SIZE, rt2x00dev->tx[0].desc_size);
 672         rt2x00_set_field32(&reg, TXCSR2_NUM_TXD, rt2x00dev->tx[1].limit);
 673         rt2x00_set_field32(&reg, TXCSR2_NUM_ATIM, rt2x00dev->bcn[1].limit);
 674         rt2x00_set_field32(&reg, TXCSR2_NUM_PRIO, rt2x00dev->tx[0].limit);
 675         rt2x00pci_register_write(rt2x00dev, TXCSR2, reg);
 676
 677         priv_tx = rt2x00dev->tx[1].entries[0].priv_data;
 678         rt2x00pci_register_read(rt2x00dev, TXCSR3, &reg);
 679         rt2x00_set_field32(&reg, TXCSR3_TX_RING_REGISTER,
 680                            priv_tx->desc_dma);
 681         rt2x00pci_register_write(rt2x00dev, TXCSR3, reg);
 682
 683         priv_tx = rt2x00dev->tx[0].entries[0].priv_data;
 684         rt2x00pci_register_read(rt2x00dev, TXCSR5, &reg);
 685         rt2x00_set_field32(&reg, TXCSR5_PRIO_RING_REGISTER,
 686                            priv_tx->desc_dma);
 687         rt2x00pci_register_write(rt2x00dev, TXCSR5, reg);
 688
 689         priv_tx = rt2x00dev->bcn[1].entries[0].priv_data;
 690         rt2x00pci_register_read(rt2x00dev, TXCSR4, &reg);
 691         rt2x00_set_field32(&reg, TXCSR4_ATIM_RING_REGISTER,
 692                            priv_tx->desc_dma);
 693         rt2x00pci_register_write(rt2x00dev, TXCSR4, reg);
 694
 695         priv_tx = rt2x00dev->bcn[0].entries[0].priv_data;
 696         rt2x00pci_register_read(rt2x00dev, TXCSR6, &reg);
 697         rt2x00_set_field32(&reg, TXCSR6_BEACON_RING_REGISTER,
 698                            priv_tx->desc_dma);
 699         rt2x00pci_register_write(rt2x00dev, TXCSR6, reg);
 700
 701         rt2x00pci_register_read(rt2x00dev, RXCSR1, &reg);
 702         rt2x00_set_field32(&reg, RXCSR1_RXD_SIZE, rt2x00dev->rx->desc_size);
 703         rt2x00_set_field32(&reg, RXCSR1_NUM_RXD, rt2x00dev->rx->limit);
 704         rt2x00pci_register_write(rt2x00dev, RXCSR1, reg);
 705
 706         priv_rx = rt2x00dev->rx->entries[0].priv_data;
 707         rt2x00pci_register_read(rt2x00dev, RXCSR2, &reg);
 708         rt2x00_set_field32(&reg, RXCSR2_RX_RING_REGISTER, priv_rx->desc_dma);
 709         rt2x00pci_register_write(rt2x00dev, RXCSR2, reg);
 710
 711         return 0;
 712 }
 713
 714 static int rt2400pci_init_registers(struct rt2x00_dev *rt2x00dev)
 715 {
 716         u32 reg;
 717
 718         rt2x00pci_register_write(rt2x00dev, PSCSR0, 0x00020002);
 719         rt2x00pci_register_write(rt2x00dev, PSCSR1, 0x00000002);
 720         rt2x00pci_register_write(rt2x00dev, PSCSR2, 0x00023f20);
 721         rt2x00pci_register_write(rt2x00dev, PSCSR3, 0x00000002);
 722
 723         rt2x00pci_register_read(rt2x00dev, TIMECSR, &reg);
 724         rt2x00_set_field32(&reg, TIMECSR_US_COUNT, 33);
 725         rt2x00_set_field32(&reg, TIMECSR_US_64_COUNT, 63);
 726         rt2x00_set_field32(&reg, TIMECSR_BEACON_EXPECT, 0);
 727         rt2x00pci_register_write(rt2x00dev, TIMECSR, reg);
 728
 729         rt2x00pci_register_read(rt2x00dev, CSR9, &reg);
 730         rt2x00_set_field32(&reg, CSR9_MAX_FRAME_UNIT,
 731                            (rt2x00dev->rx->data_size / 128));
 732         rt2x00pci_register_write(rt2x00dev, CSR9, reg);
 733
 734         rt2x00pci_register_read(rt2x00dev, CSR14, &reg);
 735         rt2x00_set_field32(&reg, CSR14_TSF_COUNT, 0);
 736         rt2x00_set_field32(&reg, CSR14_TSF_SYNC, 0);
 737         rt2x00_set_field32(&reg, CSR14_TBCN, 0);
 738         rt2x00_set_field32(&reg, CSR14_TCFP, 0);
 739         rt2x00_set_field32(&reg, CSR14_TATIMW, 0);
 740         rt2x00_set_field32(&reg, CSR14_BEACON_GEN, 0);
 741         rt2x00_set_field32(&reg, CSR14_CFP_COUNT_PRELOAD, 0);
 742         rt2x00_set_field32(&reg, CSR14_TBCM_PRELOAD, 0);
 743         rt2x00pci_register_write(rt2x00dev, CSR14, reg);
 744
 745         rt2x00pci_register_write(rt2x00dev, CNT3, 0x3f080000);
 746
 747         rt2x00pci_register_read(rt2x00dev, ARCSR0, &reg);
 748         rt2x00_set_field32(&reg, ARCSR0_AR_BBP_DATA0, 133);
 749         rt2x00_set_field32(&reg, ARCSR0_AR_BBP_ID0, 134);
 750         rt2x00_set_field32(&reg, ARCSR0_AR_BBP_DATA1, 136);
 751         rt2x00_set_field32(&reg, ARCSR0_AR_BBP_ID1, 135);
 752         rt2x00pci_register_write(rt2x00dev, ARCSR0, reg);
 753
 754         rt2x00pci_register_read(rt2x00dev, RXCSR3, &reg);
 755         rt2x00_set_field32(&reg, RXCSR3_BBP_ID0, 3); /* Tx power.*/
 756         rt2x00_set_field32(&reg, RXCSR3_BBP_ID0_VALID, 1);
 757         rt2x00_set_field32(&reg, RXCSR3_BBP_ID1, 32); /* Signal */
 758         rt2x00_set_field32(&reg, RXCSR3_BBP_ID1_VALID, 1);
 759         rt2x00_set_field32(&reg, RXCSR3_BBP_ID2, 36); /* Rssi */
 760         rt2x00_set_field32(&reg, RXCSR3_BBP_ID2_VALID, 1);
 761         rt2x00pci_register_write(rt2x00dev, RXCSR3, reg);
 762
 763         rt2x00pci_register_write(rt2x00dev, PWRCSR0, 0x3f3b3100);
 764
 765         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 766                 return -EBUSY;
 767
 768         rt2x00pci_register_write(rt2x00dev, MACCSR0, 0x00217223);
 769         rt2x00pci_register_write(rt2x00dev, MACCSR1, 0x00235518);
 770
 771         rt2x00pci_register_read(rt2x00dev, MACCSR2, &reg);
 772         rt2x00_set_field32(&reg, MACCSR2_DELAY, 64);
 773         rt2x00pci_register_write(rt2x00dev, MACCSR2, reg);
 774
 775         rt2x00pci_register_read(rt2x00dev, RALINKCSR, &reg);
 776         rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_DATA0, 17);
 777         rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_ID0, 154);
 778         rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_DATA1, 0);
 779         rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_ID1, 154);
 780         rt2x00pci_register_write(rt2x00dev, RALINKCSR, reg);
 781
 782         rt2x00pci_register_read(rt2x00dev, CSR1, &reg);
 783         rt2x00_set_field32(&reg, CSR1_SOFT_RESET, 1);
 784         rt2x00_set_field32(&reg, CSR1_BBP_RESET, 0);
 785         rt2x00_set_field32(&reg, CSR1_HOST_READY, 0);
 786         rt2x00pci_register_write(rt2x00dev, CSR1, reg);
 787
 788         rt2x00pci_register_read(rt2x00dev, CSR1, &reg);
 789         rt2x00_set_field32(&reg, CSR1_SOFT_RESET, 0);
 790         rt2x00_set_field32(&reg, CSR1_HOST_READY, 1);
 791         rt2x00pci_register_write(rt2x00dev, CSR1, reg);
 792
 793         /*
 794          * We must clear the FCS and FIFO error count.
 795          * These registers are cleared on read,
 796          * so we may pass a useless variable to store the value.
 797          */
 798         rt2x00pci_register_read(rt2x00dev, CNT0, &reg);
 799         rt2x00pci_register_read(rt2x00dev, CNT4, &reg);
 800
 801         return 0;
 802 }
 803
 804 static int rt2400pci_init_bbp(struct rt2x00_dev *rt2x00dev)
 805 {
 806         unsigned int i;
 807         u16 eeprom;
 808         u8 reg_id;
 809         u8 value;
 810
 811         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 812                 rt2400pci_bbp_read(rt2x00dev, 0, &value);
 813                 if ((value != 0xff) && (value != 0x00))
 814                         goto continue_csr_init;
 815                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
 816                 udelay(REGISTER_BUSY_DELAY);
 817         }
 818
 819         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
 820         return -EACCES;
 821
 822 continue_csr_init:
 823         rt2400pci_bbp_write(rt2x00dev, 1, 0x00);
 824         rt2400pci_bbp_write(rt2x00dev, 3, 0x27);
 825         rt2400pci_bbp_write(rt2x00dev, 4, 0x08);
 826         rt2400pci_bbp_write(rt2x00dev, 10, 0x0f);
 827         rt2400pci_bbp_write(rt2x00dev, 15, 0x72);
 828         rt2400pci_bbp_write(rt2x00dev, 16, 0x74);
 829         rt2400pci_bbp_write(rt2x00dev, 17, 0x20);
 830         rt2400pci_bbp_write(rt2x00dev, 18, 0x72);
 831         rt2400pci_bbp_write(rt2x00dev, 19, 0x0b);
 832         rt2400pci_bbp_write(rt2x00dev, 20, 0x00);
 833         rt2400pci_bbp_write(rt2x00dev, 28, 0x11);
 834         rt2400pci_bbp_write(rt2x00dev, 29, 0x04);
 835         rt2400pci_bbp_write(rt2x00dev, 30, 0x21);
 836         rt2400pci_bbp_write(rt2x00dev, 31, 0x00);
 837
 838         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 839                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 840
 841                 if (eeprom != 0xffff && eeprom != 0x0000) {
 842                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 843                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 844                         rt2400pci_bbp_write(rt2x00dev, reg_id, value);
 845                 }
 846         }
 847
 848         return 0;
 849 }
 850
 851 /*
 852  * Device state switch handlers.
 853  */
 854 static void rt2400pci_toggle_rx(struct rt2x00_dev *rt2x00dev,
 855                                 enum dev_state state)
 856 {
 857         u32 reg;
 858
 859         rt2x00pci_register_read(rt2x00dev, RXCSR0, &reg);
 860         rt2x00_set_field32(&reg, RXCSR0_DISABLE_RX,
 861                            state == STATE_RADIO_RX_OFF);
 862         rt2x00pci_register_write(rt2x00dev, RXCSR0, reg);
 863 }
 864
 865 static void rt2400pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
 866                                  enum dev_state state)
 867 {
 868         int mask = (state == STATE_RADIO_IRQ_OFF);
 869         u32 reg;
 870
 871         /*
 872          * When interrupts are being enabled, the interrupt registers
 873          * should clear the register to assure a clean state.
 874          */
 875         if (state == STATE_RADIO_IRQ_ON) {
 876                 rt2x00pci_register_read(rt2x00dev, CSR7, &reg);
 877                 rt2x00pci_register_write(rt2x00dev, CSR7, reg);
 878         }
 879
 880         /*
 881          * Only toggle the interrupts bits we are going to use.
 882          * Non-checked interrupt bits are disabled by default.
 883          */
 884         rt2x00pci_register_read(rt2x00dev, CSR8, &reg);
 885         rt2x00_set_field32(&reg, CSR8_TBCN_EXPIRE, mask);
 886         rt2x00_set_field32(&reg, CSR8_TXDONE_TXRING, mask);
 887         rt2x00_set_field32(&reg, CSR8_TXDONE_ATIMRING, mask);
 888         rt2x00_set_field32(&reg, CSR8_TXDONE_PRIORING, mask);
 889         rt2x00_set_field32(&reg, CSR8_RXDONE, mask);
 890         rt2x00pci_register_write(rt2x00dev, CSR8, reg);
 891 }
 892
 893 static int rt2400pci_enable_radio(struct rt2x00_dev *rt2x00dev)
 894 {
 895         /*
 896          * Initialize all registers.
 897          */
 898         if (rt2400pci_init_queues(rt2x00dev) ||
 899             rt2400pci_init_registers(rt2x00dev) ||
 900             rt2400pci_init_bbp(rt2x00dev)) {
 901                 ERROR(rt2x00dev, "Register initialization failed.\n");
 902                 return -EIO;
 903         }
 904
 905         /*
 906          * Enable interrupts.
 907          */
 908         rt2400pci_toggle_irq(rt2x00dev, STATE_RADIO_IRQ_ON);
 909
 910         return 0;
 911 }
 912
 913 static void rt2400pci_disable_radio(struct rt2x00_dev *rt2x00dev)
 914 {
 915         u32 reg;
 916
 917         rt2x00pci_register_write(rt2x00dev, PWRCSR0, 0);
 918
 919         /*
 920          * Disable synchronisation.
 921          */
 922         rt2x00pci_register_write(rt2x00dev, CSR14, 0);
 923
 924         /*
 925          * Cancel RX and TX.
 926          */
 927         rt2x00pci_register_read(rt2x00dev, TXCSR0, &reg);
 928         rt2x00_set_field32(&reg, TXCSR0_ABORT, 1);
 929         rt2x00pci_register_write(rt2x00dev, TXCSR0, reg);
 930
 931         /*
 932          * Disable interrupts.
 933          */
 934         rt2400pci_toggle_irq(rt2x00dev, STATE_RADIO_IRQ_OFF);
 935 }
 936
 937 static int rt2400pci_set_state(struct rt2x00_dev *rt2x00dev,
 938                                enum dev_state state)
 939 {
 940         u32 reg;
 941         unsigned int i;
 942         char put_to_sleep;
 943         char bbp_state;
 944         char rf_state;
 945
 946         put_to_sleep = (state != STATE_AWAKE);
 947
 948         rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg);
 949         rt2x00_set_field32(&reg, PWRCSR1_SET_STATE, 1);
 950         rt2x00_set_field32(&reg, PWRCSR1_BBP_DESIRE_STATE, state);
 951         rt2x00_set_field32(&reg, PWRCSR1_RF_DESIRE_STATE, state);
 952         rt2x00_set_field32(&reg, PWRCSR1_PUT_TO_SLEEP, put_to_sleep);
 953         rt2x00pci_register_write(rt2x00dev, PWRCSR1, reg);
 954
 955         /*
 956          * Device is not guaranteed to be in the requested state yet.
 957          * We must wait until the register indicates that the
 958          * device has entered the correct state.
 959          */
 960         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 961                 rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg);
 962                 bbp_state = rt2x00_get_field32(reg, PWRCSR1_BBP_CURR_STATE);
 963                 rf_state = rt2x00_get_field32(reg, PWRCSR1_RF_CURR_STATE);
 964                 if (bbp_state == state && rf_state == state)
 965                         return 0;
 966                 msleep(10);
 967         }
 968
 969         NOTICE(rt2x00dev, "Device failed to enter state %d, "
 970                "current device state: bbp %d and rf %d.\n",
 971                state, bbp_state, rf_state);
 972
 973         return -EBUSY;
 974 }
 975
 976 static int rt2400pci_set_device_state(struct rt2x00_dev *rt2x00dev,
 977                                       enum dev_state state)
 978 {
 979         int retval = 0;
 980
 981         switch (state) {
 982         case STATE_RADIO_ON:
 983                 retval = rt2400pci_enable_radio(rt2x00dev);
 984                 break;
 985         case STATE_RADIO_OFF:
 986                 rt2400pci_disable_radio(rt2x00dev);
 987                 break;
 988         case STATE_RADIO_RX_ON:
 989         case STATE_RADIO_RX_ON_LINK:
 990                 rt2400pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
 991                 break;
 992         case STATE_RADIO_RX_OFF:
 993         case STATE_RADIO_RX_OFF_LINK:
 994                 rt2400pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
 995                 break;
 996         case STATE_DEEP_SLEEP:
 997         case STATE_SLEEP:
 998         case STATE_STANDBY:
 999         case STATE_AWAKE:
1000                 retval = rt2400pci_set_state(rt2x00dev, state);
1001                 break;
1002         default:
1003                 retval = -ENOTSUPP;
1004                 break;
1005         }
1006
1007         return retval;
1008 }
1009
1010 /*
1011  * TX descriptor initialization
1012  */
1013 static void rt2400pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1014                                     struct sk_buff *skb,
1015                                     struct txentry_desc *txdesc,
1016                                     struct ieee80211_tx_control *control)
1017 {
1018         struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
1019         __le32 *txd = skbdesc->desc;
1020         u32 word;
1021
1022         /*
1023          * Start writing the descriptor words.
1024          */
1025         rt2x00_desc_read(txd, 2, &word);
1026         rt2x00_set_field32(&word, TXD_W2_DATABYTE_COUNT, skbdesc->data_len);
1027         rt2x00_desc_write(txd, 2, word);
1028
1029         rt2x00_desc_read(txd, 3, &word);
1030         rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, txdesc->signal);
1031         rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL_REGNUM, 5);
1032         rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL_BUSY, 1);
1033         rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE, txdesc->service);
1034         rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE_REGNUM, 6);
1035         rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE_BUSY, 1);
1036         rt2x00_desc_write(txd, 3, word);
1037
1038         rt2x00_desc_read(txd, 4, &word);
1039         rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_LOW, txdesc->length_low);
1040         rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW_REGNUM, 8);
1041         rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW_BUSY, 1);
1042         rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_HIGH, txdesc->length_high);
1043         rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH_REGNUM, 7);
1044         rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH_BUSY, 1);
1045         rt2x00_desc_write(txd, 4, word);
1046
1047         rt2x00_desc_read(txd, 0, &word);
1048         rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 1);
1049         rt2x00_set_field32(&word, TXD_W0_VALID, 1);
1050         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1051                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1052         rt2x00_set_field32(&word, TXD_W0_ACK,
1053                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1054         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1055                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1056         rt2x00_set_field32(&word, TXD_W0_RTS,
1057                            test_bit(ENTRY_TXD_RTS_FRAME, &txdesc->flags));
1058         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1059         rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
1060                            !!(control->flags &
1061                               IEEE80211_TXCTL_LONG_RETRY_LIMIT));
1062         rt2x00_desc_write(txd, 0, word);
1063 }
1064
1065 /*
1066  * TX data initialization
1067  */
1068 static void rt2400pci_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1069                                     const unsigned int queue)
1070 {
1071         u32 reg;
1072
1073         if (queue == RT2X00_BCN_QUEUE_BEACON) {
1074                 rt2x00pci_register_read(rt2x00dev, CSR14, &reg);
1075                 if (!rt2x00_get_field32(reg, CSR14_BEACON_GEN)) {
1076                         rt2x00_set_field32(&reg, CSR14_TSF_COUNT, 1);
1077                         rt2x00_set_field32(&reg, CSR14_TBCN, 1);
1078                         rt2x00_set_field32(&reg, CSR14_BEACON_GEN, 1);
1079                         rt2x00pci_register_write(rt2x00dev, CSR14, reg);
1080                 }
1081                 return;
1082         }
1083
1084         rt2x00pci_register_read(rt2x00dev, TXCSR0, &reg);
1085         rt2x00_set_field32(&reg, TXCSR0_KICK_PRIO,
1086                            (queue == IEEE80211_TX_QUEUE_DATA0));
1087         rt2x00_set_field32(&reg, TXCSR0_KICK_TX,
1088                            (queue == IEEE80211_TX_QUEUE_DATA1));
1089         rt2x00_set_field32(&reg, TXCSR0_KICK_ATIM,
1090                            (queue == RT2X00_BCN_QUEUE_ATIM));
1091         rt2x00pci_register_write(rt2x00dev, TXCSR0, reg);
1092 }
1093
1094 /*
1095  * RX control handlers
1096  */
1097 static void rt2400pci_fill_rxdone(struct queue_entry *entry,
1098                                   struct rxdone_entry_desc *rxdesc)
1099 {
1100         struct queue_entry_priv_pci_rx *priv_rx = entry->priv_data;
1101         u32 word0;
1102         u32 word2;
1103         u32 word3;
1104
1105         rt2x00_desc_read(priv_rx->desc, 0, &word0);
1106         rt2x00_desc_read(priv_rx->desc, 2, &word2);
1107         rt2x00_desc_read(priv_rx->desc, 3, &word3);
1108
1109         rxdesc->flags = 0;
1110         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1111                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1112         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1113                 rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1114
1115         /*
1116          * Obtain the status about this packet.
1117          * The signal is the PLCP value, and needs to be stripped
1118          * of the preamble bit (0x08).
1119          */
1120         rxdesc->signal = rt2x00_get_field32(word2, RXD_W2_SIGNAL) & ~0x08;
1121         rxdesc->rssi = rt2x00_get_field32(word2, RXD_W3_RSSI) -
1122             entry->queue->rt2x00dev->rssi_offset;
1123         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1124
1125         rxdesc->dev_flags = RXDONE_SIGNAL_PLCP;
1126         if (rt2x00_get_field32(word0, RXD_W0_MY_BSS))
1127                 rxdesc->dev_flags |= RXDONE_MY_BSS;
1128 }
1129
1130 /*
1131  * Interrupt functions.
1132  */
1133 static void rt2400pci_txdone(struct rt2x00_dev *rt2x00dev,
1134                              const enum ieee80211_tx_queue queue_idx)
1135 {
1136         struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, queue_idx);
1137         struct queue_entry_priv_pci_tx *priv_tx;
1138         struct queue_entry *entry;
1139         struct txdone_entry_desc txdesc;
1140         u32 word;
1141
1142         while (!rt2x00queue_empty(queue)) {
1143                 entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
1144                 priv_tx = entry->priv_data;
1145                 rt2x00_desc_read(priv_tx->desc, 0, &word);
1146
1147                 if (rt2x00_get_field32(word, TXD_W0_OWNER_NIC) ||
1148                     !rt2x00_get_field32(word, TXD_W0_VALID))
1149                         break;
1150
1151                 /*
1152                  * Obtain the status about this packet.
1153                  */
1154                 txdesc.status = rt2x00_get_field32(word, TXD_W0_RESULT);
1155                 txdesc.retry = rt2x00_get_field32(word, TXD_W0_RETRY_COUNT);
1156
1157                 rt2x00pci_txdone(rt2x00dev, entry, &txdesc);
1158         }
1159 }
1160
1161 static irqreturn_t rt2400pci_interrupt(int irq, void *dev_instance)
1162 {
1163         struct rt2x00_dev *rt2x00dev = dev_instance;
1164         u32 reg;
1165
1166         /*
1167          * Get the interrupt sources & saved to local variable.
1168          * Write register value back to clear pending interrupts.
1169          */
1170         rt2x00pci_register_read(rt2x00dev, CSR7, &reg);
1171         rt2x00pci_register_write(rt2x00dev, CSR7, reg);
1172
1173         if (!reg)
1174                 return IRQ_NONE;
1175
1176         if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
1177                 return IRQ_HANDLED;
1178
1179         /*
1180          * Handle interrupts, walk through all bits
1181          * and run the tasks, the bits are checked in order of
1182          * priority.
1183          */
1184
1185         /*
1186          * 1 - Beacon timer expired interrupt.
1187          */
1188         if (rt2x00_get_field32(reg, CSR7_TBCN_EXPIRE))
1189                 rt2x00lib_beacondone(rt2x00dev);
1190
1191         /*
1192          * 2 - Rx ring done interrupt.
1193          */
1194         if (rt2x00_get_field32(reg, CSR7_RXDONE))
1195                 rt2x00pci_rxdone(rt2x00dev);
1196
1197         /*
1198          * 3 - Atim ring transmit done interrupt.
1199          */
1200         if (rt2x00_get_field32(reg, CSR7_TXDONE_ATIMRING))
1201                 rt2400pci_txdone(rt2x00dev, RT2X00_BCN_QUEUE_ATIM);
1202
1203         /*
1204          * 4 - Priority ring transmit done interrupt.
1205          */
1206         if (rt2x00_get_field32(reg, CSR7_TXDONE_PRIORING))
1207                 rt2400pci_txdone(rt2x00dev, IEEE80211_TX_QUEUE_DATA0);
1208
1209         /*
1210          * 5 - Tx ring transmit done interrupt.
1211          */
1212         if (rt2x00_get_field32(reg, CSR7_TXDONE_TXRING))
1213                 rt2400pci_txdone(rt2x00dev, IEEE80211_TX_QUEUE_DATA1);
1214
1215         return IRQ_HANDLED;
1216 }
1217
1218 /*
1219  * Device probe functions.
1220  */
1221 static int rt2400pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1222 {
1223         struct eeprom_93cx6 eeprom;
1224         u32 reg;
1225         u16 word;
1226         u8 *mac;
1227
1228         rt2x00pci_register_read(rt2x00dev, CSR21, &reg);
1229
1230         eeprom.data = rt2x00dev;
1231         eeprom.register_read = rt2400pci_eepromregister_read;
1232         eeprom.register_write = rt2400pci_eepromregister_write;
1233         eeprom.width = rt2x00_get_field32(reg, CSR21_TYPE_93C46) ?
1234             PCI_EEPROM_WIDTH_93C46 : PCI_EEPROM_WIDTH_93C66;
1235         eeprom.reg_data_in = 0;
1236         eeprom.reg_data_out = 0;
1237         eeprom.reg_data_clock = 0;
1238         eeprom.reg_chip_select = 0;
1239
1240         eeprom_93cx6_multiread(&eeprom, EEPROM_BASE, rt2x00dev->eeprom,
1241                                EEPROM_SIZE / sizeof(u16));
1242
1243         /*
1244          * Start validation of the data that has been read.
1245          */
1246         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1247         if (!is_valid_ether_addr(mac)) {
1248                 DECLARE_MAC_BUF(macbuf);
1249
1250                 random_ether_addr(mac);
1251                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1252         }
1253
1254         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1255         if (word == 0xffff) {
1256                 ERROR(rt2x00dev, "Invalid EEPROM data detected.\n");
1257                 return -EINVAL;
1258         }
1259
1260         return 0;
1261 }
1262
1263 static int rt2400pci_init_eeprom(struct rt2x00_dev *rt2x00dev)
1264 {
1265         u32 reg;
1266         u16 value;
1267         u16 eeprom;
1268
1269         /*
1270          * Read EEPROM word for configuration.
1271          */
1272         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1273
1274         /*
1275          * Identify RF chipset.
1276          */
1277         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1278         rt2x00pci_register_read(rt2x00dev, CSR0, &reg);
1279         rt2x00_set_chip(rt2x00dev, RT2460, value, reg);
1280
1281         if (!rt2x00_rf(&rt2x00dev->chip, RF2420) &&
1282             !rt2x00_rf(&rt2x00dev->chip, RF2421)) {
1283                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1284                 return -ENODEV;
1285         }
1286
1287         /*
1288          * Identify default antenna configuration.
1289          */
1290         rt2x00dev->default_ant.tx =
1291             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1292         rt2x00dev->default_ant.rx =
1293             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1294
1295         /*
1296          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1297          * I am not 100% sure about this, but the legacy drivers do not
1298          * indicate antenna swapping in software is required when
1299          * diversity is enabled.
1300          */
1301         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1302                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1303         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1304                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1305
1306         /*
1307          * Store led mode, for correct led behaviour.
1308          */
1309 #ifdef CONFIG_RT2400PCI_LEDS
1310         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1311
1312         rt2x00dev->led_radio.rt2x00dev = rt2x00dev;
1313         rt2x00dev->led_radio.type = LED_TYPE_RADIO;
1314         rt2x00dev->led_radio.led_dev.brightness_set =
1315             rt2400pci_brightness_set;
1316         rt2x00dev->led_radio.led_dev.blink_set =
1317             rt2400pci_blink_set;
1318         rt2x00dev->led_radio.flags = LED_INITIALIZED;
1319
1320         if (value == LED_MODE_TXRX_ACTIVITY) {
1321                 rt2x00dev->led_qual.rt2x00dev = rt2x00dev;
1322                 rt2x00dev->led_qual.type = LED_TYPE_ACTIVITY;
1323                 rt2x00dev->led_qual.led_dev.brightness_set =
1324                     rt2400pci_brightness_set;
1325                 rt2x00dev->led_qual.led_dev.blink_set =
1326                     rt2400pci_blink_set;
1327                 rt2x00dev->led_qual.flags = LED_INITIALIZED;
1328         }
1329 #endif /* CONFIG_RT2400PCI_LEDS */
1330
1331         /*
1332          * Detect if this device has an hardware controlled radio.
1333          */
1334 #ifdef CONFIG_RT2400PCI_RFKILL
1335         if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_HARDWARE_RADIO))
1336                 __set_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags);
1337 #endif /* CONFIG_RT2400PCI_RFKILL */
1338
1339         /*
1340          * Check if the BBP tuning should be enabled.
1341          */
1342         if (!rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_AGCVGC_TUNING))
1343                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1344
1345         return 0;
1346 }
1347
1348 /*
1349  * RF value list for RF2420 & RF2421
1350  * Supports: 2.4 GHz
1351  */
1352 static const struct rf_channel rf_vals_bg[] = {
1353         { 1,  0x00022058, 0x000c1fda, 0x00000101, 0 },
1354         { 2,  0x00022058, 0x000c1fee, 0x00000101, 0 },
1355         { 3,  0x00022058, 0x000c2002, 0x00000101, 0 },
1356         { 4,  0x00022058, 0x000c2016, 0x00000101, 0 },
1357         { 5,  0x00022058, 0x000c202a, 0x00000101, 0 },
1358         { 6,  0x00022058, 0x000c203e, 0x00000101, 0 },
1359         { 7,  0x00022058, 0x000c2052, 0x00000101, 0 },
1360         { 8,  0x00022058, 0x000c2066, 0x00000101, 0 },
1361         { 9,  0x00022058, 0x000c207a, 0x00000101, 0 },
1362         { 10, 0x00022058, 0x000c208e, 0x00000101, 0 },
1363         { 11, 0x00022058, 0x000c20a2, 0x00000101, 0 },
1364         { 12, 0x00022058, 0x000c20b6, 0x00000101, 0 },
1365         { 13, 0x00022058, 0x000c20ca, 0x00000101, 0 },
1366         { 14, 0x00022058, 0x000c20fa, 0x00000101, 0 },
1367 };
1368
1369 static void rt2400pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1370 {
1371         struct hw_mode_spec *spec = &rt2x00dev->spec;
1372         u8 *txpower;
1373         unsigned int i;
1374
1375         /*
1376          * Initialize all hw fields.
1377          */
1378         rt2x00dev->hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1379         rt2x00dev->hw->extra_tx_headroom = 0;
1380         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1381         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1382         rt2x00dev->hw->queues = 2;
1383
1384         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_pci(rt2x00dev)->dev);
1385         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1386                                 rt2x00_eeprom_addr(rt2x00dev,
1387                                                    EEPROM_MAC_ADDR_0));
1388
1389         /*
1390          * Convert tx_power array in eeprom.
1391          */
1392         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1393         for (i = 0; i < 14; i++)
1394                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1395
1396         /*
1397          * Initialize hw_mode information.
1398          */
1399         spec->supported_bands = SUPPORT_BAND_2GHZ;
1400         spec->supported_rates = SUPPORT_RATE_CCK;
1401         spec->tx_power_a = NULL;
1402         spec->tx_power_bg = txpower;
1403         spec->tx_power_default = DEFAULT_TXPOWER;
1404
1405         spec->num_channels = ARRAY_SIZE(rf_vals_bg);
1406         spec->channels = rf_vals_bg;
1407 }
1408
1409 static int rt2400pci_probe_hw(struct rt2x00_dev *rt2x00dev)
1410 {
1411         int retval;
1412
1413         /*
1414          * Allocate eeprom data.
1415          */
1416         retval = rt2400pci_validate_eeprom(rt2x00dev);
1417         if (retval)
1418                 return retval;
1419
1420         retval = rt2400pci_init_eeprom(rt2x00dev);
1421         if (retval)
1422                 return retval;
1423
1424         /*
1425          * Initialize hw specifications.
1426          */
1427         rt2400pci_probe_hw_mode(rt2x00dev);
1428
1429         /*
1430          * This device requires the atim queue
1431          */
1432         __set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
1433
1434         /*
1435          * Set the rssi offset.
1436          */
1437         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1438
1439         return 0;
1440 }
1441
1442 /*
1443  * IEEE80211 stack callback functions.
1444  */
1445 static int rt2400pci_set_retry_limit(struct ieee80211_hw *hw,
1446                                      u32 short_retry, u32 long_retry)
1447 {
1448         struct rt2x00_dev *rt2x00dev = hw->priv;
1449         u32 reg;
1450
1451         rt2x00pci_register_read(rt2x00dev, CSR11, &reg);
1452         rt2x00_set_field32(&reg, CSR11_LONG_RETRY, long_retry);
1453         rt2x00_set_field32(&reg, CSR11_SHORT_RETRY, short_retry);
1454         rt2x00pci_register_write(rt2x00dev, CSR11, reg);
1455
1456         return 0;
1457 }
1458
1459 static int rt2400pci_conf_tx(struct ieee80211_hw *hw,
1460                              int queue,
1461                              const struct ieee80211_tx_queue_params *params)
1462 {
1463         struct rt2x00_dev *rt2x00dev = hw->priv;
1464
1465         /*
1466          * We don't support variating cw_min and cw_max variables
1467          * per queue. So by default we only configure the TX queue,
1468          * and ignore all other configurations.
1469          */
1470         if (queue != IEEE80211_TX_QUEUE_DATA0)
1471                 return -EINVAL;
1472
1473         if (rt2x00mac_conf_tx(hw, queue, params))
1474                 return -EINVAL;
1475
1476         /*
1477          * Write configuration to register.
1478          */
1479         rt2400pci_config_cw(rt2x00dev,
1480                             rt2x00dev->tx->cw_min, rt2x00dev->tx->cw_max);
1481
1482         return 0;
1483 }
1484
1485 static u64 rt2400pci_get_tsf(struct ieee80211_hw *hw)
1486 {
1487         struct rt2x00_dev *rt2x00dev = hw->priv;
1488         u64 tsf;
1489         u32 reg;
1490
1491         rt2x00pci_register_read(rt2x00dev, CSR17, &reg);
1492         tsf = (u64) rt2x00_get_field32(reg, CSR17_HIGH_TSFTIMER) << 32;
1493         rt2x00pci_register_read(rt2x00dev, CSR16, &reg);
1494         tsf |= rt2x00_get_field32(reg, CSR16_LOW_TSFTIMER);
1495
1496         return tsf;
1497 }
1498
1499 static int rt2400pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
1500                                    struct ieee80211_tx_control *control)
1501 {
1502         struct rt2x00_dev *rt2x00dev = hw->priv;
1503         struct rt2x00_intf *intf = vif_to_intf(control->vif);
1504         struct queue_entry_priv_pci_tx *priv_tx;
1505         struct skb_frame_desc *skbdesc;
1506         u32 reg;
1507
1508         if (unlikely(!intf->beacon))
1509                 return -ENOBUFS;
1510         priv_tx = intf->beacon->priv_data;
1511
1512         /*
1513          * Fill in skb descriptor
1514          */
1515         skbdesc = get_skb_frame_desc(skb);
1516         memset(skbdesc, 0, sizeof(*skbdesc));
1517         skbdesc->flags |= FRAME_DESC_DRIVER_GENERATED;
1518         skbdesc->data = skb->data;
1519         skbdesc->data_len = skb->len;
1520         skbdesc->desc = priv_tx->desc;
1521         skbdesc->desc_len = intf->beacon->queue->desc_size;
1522         skbdesc->entry = intf->beacon;
1523
1524         /*
1525          * Disable beaconing while we are reloading the beacon data,
1526          * otherwise we might be sending out invalid data.
1527          */
1528         rt2x00pci_register_read(rt2x00dev, CSR14, &reg);
1529         rt2x00_set_field32(&reg, CSR14_TSF_COUNT, 0);
1530         rt2x00_set_field32(&reg, CSR14_TBCN, 0);
1531         rt2x00_set_field32(&reg, CSR14_BEACON_GEN, 0);
1532         rt2x00pci_register_write(rt2x00dev, CSR14, reg);
1533
1534         /*
1535          * mac80211 doesn't provide the control->queue variable
1536          * for beacons. Set our own queue identification so
1537          * it can be used during descriptor initialization.
1538          */
1539         control->queue = RT2X00_BCN_QUEUE_BEACON;
1540         rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
1541
1542         /*
1543          * Enable beacon generation.
1544          * Write entire beacon with descriptor to register,
1545          * and kick the beacon generator.
1546          */
1547         memcpy(priv_tx->data, skb->data, skb->len);
1548         rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, control->queue);
1549
1550         return 0;
1551 }
1552
1553 static int rt2400pci_tx_last_beacon(struct ieee80211_hw *hw)
1554 {
1555         struct rt2x00_dev *rt2x00dev = hw->priv;
1556         u32 reg;
1557
1558         rt2x00pci_register_read(rt2x00dev, CSR15, &reg);
1559         return rt2x00_get_field32(reg, CSR15_BEACON_SENT);
1560 }
1561
1562 static const struct ieee80211_ops rt2400pci_mac80211_ops = {
1563         .tx                     = rt2x00mac_tx,
1564         .start                  = rt2x00mac_start,
1565         .stop                   = rt2x00mac_stop,
1566         .add_interface          = rt2x00mac_add_interface,
1567         .remove_interface       = rt2x00mac_remove_interface,
1568         .config                 = rt2x00mac_config,
1569         .config_interface       = rt2x00mac_config_interface,
1570         .configure_filter       = rt2x00mac_configure_filter,
1571         .get_stats              = rt2x00mac_get_stats,
1572         .set_retry_limit        = rt2400pci_set_retry_limit,
1573         .bss_info_changed       = rt2x00mac_bss_info_changed,
1574         .conf_tx                = rt2400pci_conf_tx,
1575         .get_tx_stats           = rt2x00mac_get_tx_stats,
1576         .get_tsf                = rt2400pci_get_tsf,
1577         .beacon_update          = rt2400pci_beacon_update,
1578         .tx_last_beacon         = rt2400pci_tx_last_beacon,
1579 };
1580
1581 static const struct rt2x00lib_ops rt2400pci_rt2x00_ops = {
1582         .irq_handler            = rt2400pci_interrupt,
1583         .probe_hw               = rt2400pci_probe_hw,
1584         .initialize             = rt2x00pci_initialize,
1585         .uninitialize           = rt2x00pci_uninitialize,
1586         .init_rxentry           = rt2400pci_init_rxentry,
1587         .init_txentry           = rt2400pci_init_txentry,
1588         .set_device_state       = rt2400pci_set_device_state,
1589         .rfkill_poll            = rt2400pci_rfkill_poll,
1590         .link_stats             = rt2400pci_link_stats,
1591         .reset_tuner            = rt2400pci_reset_tuner,
1592         .link_tuner             = rt2400pci_link_tuner,
1593         .write_tx_desc          = rt2400pci_write_tx_desc,
1594         .write_tx_data          = rt2x00pci_write_tx_data,
1595         .kick_tx_queue          = rt2400pci_kick_tx_queue,
1596         .fill_rxdone            = rt2400pci_fill_rxdone,
1597         .config_filter          = rt2400pci_config_filter,
1598         .config_intf            = rt2400pci_config_intf,
1599         .config_erp             = rt2400pci_config_erp,
1600         .config                 = rt2400pci_config,
1601 };
1602
1603 static const struct data_queue_desc rt2400pci_queue_rx = {
1604         .entry_num              = RX_ENTRIES,
1605         .data_size              = DATA_FRAME_SIZE,
1606         .desc_size              = RXD_DESC_SIZE,
1607         .priv_size              = sizeof(struct queue_entry_priv_pci_rx),
1608 };
1609
1610 static const struct data_queue_desc rt2400pci_queue_tx = {
1611         .entry_num              = TX_ENTRIES,
1612         .data_size              = DATA_FRAME_SIZE,
1613         .desc_size              = TXD_DESC_SIZE,
1614         .priv_size              = sizeof(struct queue_entry_priv_pci_tx),
1615 };
1616
1617 static const struct data_queue_desc rt2400pci_queue_bcn = {
1618         .entry_num              = BEACON_ENTRIES,
1619         .data_size              = MGMT_FRAME_SIZE,
1620         .desc_size              = TXD_DESC_SIZE,
1621         .priv_size              = sizeof(struct queue_entry_priv_pci_tx),
1622 };
1623
1624 static const struct data_queue_desc rt2400pci_queue_atim = {
1625         .entry_num              = ATIM_ENTRIES,
1626         .data_size              = DATA_FRAME_SIZE,
1627         .desc_size              = TXD_DESC_SIZE,
1628         .priv_size              = sizeof(struct queue_entry_priv_pci_tx),
1629 };
1630
1631 static const struct rt2x00_ops rt2400pci_ops = {
1632         .name           = KBUILD_MODNAME,
1633         .max_sta_intf   = 1,
1634         .max_ap_intf    = 1,
1635         .eeprom_size    = EEPROM_SIZE,
1636         .rf_size        = RF_SIZE,
1637         .rx             = &rt2400pci_queue_rx,
1638         .tx             = &rt2400pci_queue_tx,
1639         .bcn            = &rt2400pci_queue_bcn,
1640         .atim           = &rt2400pci_queue_atim,
1641         .lib            = &rt2400pci_rt2x00_ops,
1642         .hw             = &rt2400pci_mac80211_ops,
1643 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1644         .debugfs        = &rt2400pci_rt2x00debug,
1645 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1646 };
1647
1648 /*
1649  * RT2400pci module information.
1650  */
1651 static struct pci_device_id rt2400pci_device_table[] = {
1652         { PCI_DEVICE(0x1814, 0x0101), PCI_DEVICE_DATA(&rt2400pci_ops) },
1653         { 0, }
1654 };
1655
1656 MODULE_AUTHOR(DRV_PROJECT);
1657 MODULE_VERSION(DRV_VERSION);
1658 MODULE_DESCRIPTION("Ralink RT2400 PCI & PCMCIA Wireless LAN driver.");
1659 MODULE_SUPPORTED_DEVICE("Ralink RT2460 PCI & PCMCIA chipset based cards");
1660 MODULE_DEVICE_TABLE(pci, rt2400pci_device_table);
1661 MODULE_LICENSE("GPL");
1662
1663 static struct pci_driver rt2400pci_driver = {
1664         .name           = KBUILD_MODNAME,
1665         .id_table       = rt2400pci_device_table,
1666         .probe          = rt2x00pci_probe,
1667         .remove         = __devexit_p(rt2x00pci_remove),
1668         .suspend        = rt2x00pci_suspend,
1669         .resume         = rt2x00pci_resume,
1670 };
1671
1672 static int __init rt2400pci_init(void)
1673 {
1674         return pci_register_driver(&rt2400pci_driver);
1675 }
1676
1677 static void __exit rt2400pci_exit(void)
1678 {
1679         pci_unregister_driver(&rt2400pci_driver);
1680 }
1681
1682 module_init(rt2400pci_init);
1683 module_exit(rt2400pci_exit);