err.no 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_led_brightness(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         unsigned int activity =
 254             led->rt2x00dev->led_flags & LED_SUPPORT_ACTIVITY;
 255         u32 reg;
 256
 257         rt2x00pci_register_read(led->rt2x00dev, LEDCSR, &reg);
 258
 259         if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC) {
 260                 rt2x00_set_field32(&reg, LEDCSR_LINK, enabled);
 261                 rt2x00_set_field32(&reg, LEDCSR_ACTIVITY, enabled && activity);
 262         }
 263
 264         rt2x00pci_register_write(led->rt2x00dev, LEDCSR, reg);
 265 }
 266 #else
 267 #define rt2400pci_led_brightness        NULL
 268 #endif /* CONFIG_RT2400PCI_LEDS */
 269
 270 /*
 271  * Configuration handlers.
 272  */
 273 static void rt2400pci_config_intf(struct rt2x00_dev *rt2x00dev,
 274                                   struct rt2x00_intf *intf,
 275                                   struct rt2x00intf_conf *conf,
 276                                   const unsigned int flags)
 277 {
 278         unsigned int bcn_preload;
 279         u32 reg;
 280
 281         if (flags & CONFIG_UPDATE_TYPE) {
 282                 rt2x00pci_register_write(rt2x00dev, CSR14, 0);
 283
 284                 /*
 285                  * Enable beacon config
 286                  */
 287                 bcn_preload = PREAMBLE + get_duration(IEEE80211_HEADER, 20);
 288                 rt2x00pci_register_read(rt2x00dev, BCNCSR1, &reg);
 289                 rt2x00_set_field32(&reg, BCNCSR1_PRELOAD, bcn_preload);
 290                 rt2x00pci_register_write(rt2x00dev, BCNCSR1, reg);
 291
 292                 /*
 293                  * Enable synchronisation.
 294                  */
 295                 rt2x00pci_register_read(rt2x00dev, CSR14, &reg);
 296                 rt2x00_set_field32(&reg, CSR14_TSF_COUNT, 1);
 297                 rt2x00_set_field32(&reg, CSR14_TBCN,
 298                                    (conf->sync == TSF_SYNC_BEACON));
 299                 rt2x00_set_field32(&reg, CSR14_BEACON_GEN, 0);
 300                 rt2x00_set_field32(&reg, CSR14_TSF_SYNC, conf->sync);
 301                 rt2x00pci_register_write(rt2x00dev, CSR14, reg);
 302         }
 303
 304         if (flags & CONFIG_UPDATE_MAC)
 305                 rt2x00pci_register_multiwrite(rt2x00dev, CSR3,
 306                                               conf->mac, sizeof(conf->mac));
 307
 308         if (flags & CONFIG_UPDATE_BSSID)
 309                 rt2x00pci_register_multiwrite(rt2x00dev, CSR5,
 310                                               conf->bssid, sizeof(conf->bssid));
 311 }
 312
 313 static int rt2400pci_config_preamble(struct rt2x00_dev *rt2x00dev,
 314                                      const int short_preamble,
 315                                      const int ack_timeout,
 316                                      const int ack_consume_time)
 317 {
 318         int preamble_mask;
 319         u32 reg;
 320
 321         /*
 322          * When short preamble is enabled, we should set bit 0x08
 323          */
 324         preamble_mask = short_preamble << 3;
 325
 326         rt2x00pci_register_read(rt2x00dev, TXCSR1, &reg);
 327         rt2x00_set_field32(&reg, TXCSR1_ACK_TIMEOUT, ack_timeout);
 328         rt2x00_set_field32(&reg, TXCSR1_ACK_CONSUME_TIME, ack_consume_time);
 329         rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
 330
 331         rt2x00pci_register_read(rt2x00dev, ARCSR2, &reg);
 332         rt2x00_set_field32(&reg, ARCSR2_SIGNAL, 0x00 | preamble_mask);
 333         rt2x00_set_field32(&reg, ARCSR2_SERVICE, 0x04);
 334         rt2x00_set_field32(&reg, ARCSR2_LENGTH, get_duration(ACK_SIZE, 10));
 335         rt2x00pci_register_write(rt2x00dev, ARCSR2, reg);
 336
 337         rt2x00pci_register_read(rt2x00dev, ARCSR3, &reg);
 338         rt2x00_set_field32(&reg, ARCSR3_SIGNAL, 0x01 | preamble_mask);
 339         rt2x00_set_field32(&reg, ARCSR3_SERVICE, 0x04);
 340         rt2x00_set_field32(&reg, ARCSR2_LENGTH, get_duration(ACK_SIZE, 20));
 341         rt2x00pci_register_write(rt2x00dev, ARCSR3, reg);
 342
 343         rt2x00pci_register_read(rt2x00dev, ARCSR4, &reg);
 344         rt2x00_set_field32(&reg, ARCSR4_SIGNAL, 0x02 | preamble_mask);
 345         rt2x00_set_field32(&reg, ARCSR4_SERVICE, 0x04);
 346         rt2x00_set_field32(&reg, ARCSR2_LENGTH, get_duration(ACK_SIZE, 55));
 347         rt2x00pci_register_write(rt2x00dev, ARCSR4, reg);
 348
 349         rt2x00pci_register_read(rt2x00dev, ARCSR5, &reg);
 350         rt2x00_set_field32(&reg, ARCSR5_SIGNAL, 0x03 | preamble_mask);
 351         rt2x00_set_field32(&reg, ARCSR5_SERVICE, 0x84);
 352         rt2x00_set_field32(&reg, ARCSR2_LENGTH, get_duration(ACK_SIZE, 110));
 353         rt2x00pci_register_write(rt2x00dev, ARCSR5, reg);
 354
 355         return 0;
 356 }
 357
 358 static void rt2400pci_config_phymode(struct rt2x00_dev *rt2x00dev,
 359                                      const int basic_rate_mask)
 360 {
 361         rt2x00pci_register_write(rt2x00dev, ARCSR1, basic_rate_mask);
 362 }
 363
 364 static void rt2400pci_config_channel(struct rt2x00_dev *rt2x00dev,
 365                                      struct rf_channel *rf)
 366 {
 367         /*
 368          * Switch on tuning bits.
 369          */
 370         rt2x00_set_field32(&rf->rf1, RF1_TUNER, 1);
 371         rt2x00_set_field32(&rf->rf3, RF3_TUNER, 1);
 372
 373         rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
 374         rt2400pci_rf_write(rt2x00dev, 2, rf->rf2);
 375         rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
 376
 377         /*
 378          * RF2420 chipset don't need any additional actions.
 379          */
 380         if (rt2x00_rf(&rt2x00dev->chip, RF2420))
 381                 return;
 382
 383         /*
 384          * For the RT2421 chipsets we need to write an invalid
 385          * reference clock rate to activate auto_tune.
 386          * After that we set the value back to the correct channel.
 387          */
 388         rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
 389         rt2400pci_rf_write(rt2x00dev, 2, 0x000c2a32);
 390         rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
 391
 392         msleep(1);
 393
 394         rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
 395         rt2400pci_rf_write(rt2x00dev, 2, rf->rf2);
 396         rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
 397
 398         msleep(1);
 399
 400         /*
 401          * Switch off tuning bits.
 402          */
 403         rt2x00_set_field32(&rf->rf1, RF1_TUNER, 0);
 404         rt2x00_set_field32(&rf->rf3, RF3_TUNER, 0);
 405
 406         rt2400pci_rf_write(rt2x00dev, 1, rf->rf1);
 407         rt2400pci_rf_write(rt2x00dev, 3, rf->rf3);
 408
 409         /*
 410          * Clear false CRC during channel switch.
 411          */
 412         rt2x00pci_register_read(rt2x00dev, CNT0, &rf->rf1);
 413 }
 414
 415 static void rt2400pci_config_txpower(struct rt2x00_dev *rt2x00dev, int txpower)
 416 {
 417         rt2400pci_bbp_write(rt2x00dev, 3, TXPOWER_TO_DEV(txpower));
 418 }
 419
 420 static void rt2400pci_config_antenna(struct rt2x00_dev *rt2x00dev,
 421                                      struct antenna_setup *ant)
 422 {
 423         u8 r1;
 424         u8 r4;
 425
 426         rt2400pci_bbp_read(rt2x00dev, 4, &r4);
 427         rt2400pci_bbp_read(rt2x00dev, 1, &r1);
 428
 429         /*
 430          * Configure the TX antenna.
 431          */
 432         switch (ant->tx) {
 433         case ANTENNA_HW_DIVERSITY:
 434                 rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 1);
 435                 break;
 436         case ANTENNA_A:
 437                 rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 0);
 438                 break;
 439         case ANTENNA_SW_DIVERSITY:
 440                 /*
 441                  * NOTE: We should never come here because rt2x00lib is
 442                  * supposed to catch this and send us the correct antenna
 443                  * explicitely. However we are nog going to bug about this.
 444                  * Instead, just default to antenna B.
 445                  */
 446         case ANTENNA_B:
 447                 rt2x00_set_field8(&r1, BBP_R1_TX_ANTENNA, 2);
 448                 break;
 449         }
 450
 451         /*
 452          * Configure the RX antenna.
 453          */
 454         switch (ant->rx) {
 455         case ANTENNA_HW_DIVERSITY:
 456                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 1);
 457                 break;
 458         case ANTENNA_A:
 459                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 0);
 460                 break;
 461         case ANTENNA_SW_DIVERSITY:
 462                 /*
 463                  * NOTE: We should never come here because rt2x00lib is
 464                  * supposed to catch this and send us the correct antenna
 465                  * explicitely. However we are nog going to bug about this.
 466                  * Instead, just default to antenna B.
 467                  */
 468         case ANTENNA_B:
 469                 rt2x00_set_field8(&r4, BBP_R4_RX_ANTENNA, 2);
 470                 break;
 471         }
 472
 473         rt2400pci_bbp_write(rt2x00dev, 4, r4);
 474         rt2400pci_bbp_write(rt2x00dev, 1, r1);
 475 }
 476
 477 static void rt2400pci_config_duration(struct rt2x00_dev *rt2x00dev,
 478                                       struct rt2x00lib_conf *libconf)
 479 {
 480         u32 reg;
 481
 482         rt2x00pci_register_read(rt2x00dev, CSR11, &reg);
 483         rt2x00_set_field32(&reg, CSR11_SLOT_TIME, libconf->slot_time);
 484         rt2x00pci_register_write(rt2x00dev, CSR11, reg);
 485
 486         rt2x00pci_register_read(rt2x00dev, CSR18, &reg);
 487         rt2x00_set_field32(&reg, CSR18_SIFS, libconf->sifs);
 488         rt2x00_set_field32(&reg, CSR18_PIFS, libconf->pifs);
 489         rt2x00pci_register_write(rt2x00dev, CSR18, reg);
 490
 491         rt2x00pci_register_read(rt2x00dev, CSR19, &reg);
 492         rt2x00_set_field32(&reg, CSR19_DIFS, libconf->difs);
 493         rt2x00_set_field32(&reg, CSR19_EIFS, libconf->eifs);
 494         rt2x00pci_register_write(rt2x00dev, CSR19, reg);
 495
 496         rt2x00pci_register_read(rt2x00dev, TXCSR1, &reg);
 497         rt2x00_set_field32(&reg, TXCSR1_TSF_OFFSET, IEEE80211_HEADER);
 498         rt2x00_set_field32(&reg, TXCSR1_AUTORESPONDER, 1);
 499         rt2x00pci_register_write(rt2x00dev, TXCSR1, reg);
 500
 501         rt2x00pci_register_read(rt2x00dev, CSR12, &reg);
 502         rt2x00_set_field32(&reg, CSR12_BEACON_INTERVAL,
 503                            libconf->conf->beacon_int * 16);
 504         rt2x00_set_field32(&reg, CSR12_CFP_MAX_DURATION,
 505                            libconf->conf->beacon_int * 16);
 506         rt2x00pci_register_write(rt2x00dev, CSR12, reg);
 507 }
 508
 509 static void rt2400pci_config(struct rt2x00_dev *rt2x00dev,
 510                              struct rt2x00lib_conf *libconf,
 511                              const unsigned int flags)
 512 {
 513         if (flags & CONFIG_UPDATE_PHYMODE)
 514                 rt2400pci_config_phymode(rt2x00dev, libconf->basic_rates);
 515         if (flags & CONFIG_UPDATE_CHANNEL)
 516                 rt2400pci_config_channel(rt2x00dev, &libconf->rf);
 517         if (flags & CONFIG_UPDATE_TXPOWER)
 518                 rt2400pci_config_txpower(rt2x00dev,
 519                                          libconf->conf->power_level);
 520         if (flags & CONFIG_UPDATE_ANTENNA)
 521                 rt2400pci_config_antenna(rt2x00dev, &libconf->ant);
 522         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
 523                 rt2400pci_config_duration(rt2x00dev, libconf);
 524 }
 525
 526 static void rt2400pci_config_cw(struct rt2x00_dev *rt2x00dev,
 527                                 const int cw_min, const int cw_max)
 528 {
 529         u32 reg;
 530
 531         rt2x00pci_register_read(rt2x00dev, CSR11, &reg);
 532         rt2x00_set_field32(&reg, CSR11_CWMIN, cw_min);
 533         rt2x00_set_field32(&reg, CSR11_CWMAX, cw_max);
 534         rt2x00pci_register_write(rt2x00dev, CSR11, reg);
 535 }
 536
 537 /*
 538  * Link tuning
 539  */
 540 static void rt2400pci_link_stats(struct rt2x00_dev *rt2x00dev,
 541                                  struct link_qual *qual)
 542 {
 543         u32 reg;
 544         u8 bbp;
 545
 546         /*
 547          * Update FCS error count from register.
 548          */
 549         rt2x00pci_register_read(rt2x00dev, CNT0, &reg);
 550         qual->rx_failed = rt2x00_get_field32(reg, CNT0_FCS_ERROR);
 551
 552         /*
 553          * Update False CCA count from register.
 554          */
 555         rt2400pci_bbp_read(rt2x00dev, 39, &bbp);
 556         qual->false_cca = bbp;
 557 }
 558
 559 static void rt2400pci_reset_tuner(struct rt2x00_dev *rt2x00dev)
 560 {
 561         rt2400pci_bbp_write(rt2x00dev, 13, 0x08);
 562         rt2x00dev->link.vgc_level = 0x08;
 563 }
 564
 565 static void rt2400pci_link_tuner(struct rt2x00_dev *rt2x00dev)
 566 {
 567         u8 reg;
 568
 569         /*
 570          * The link tuner should not run longer then 60 seconds,
 571          * and should run once every 2 seconds.
 572          */
 573         if (rt2x00dev->link.count > 60 || !(rt2x00dev->link.count & 1))
 574                 return;
 575
 576         /*
 577          * Base r13 link tuning on the false cca count.
 578          */
 579         rt2400pci_bbp_read(rt2x00dev, 13, &reg);
 580
 581         if (rt2x00dev->link.qual.false_cca > 512 && reg < 0x20) {
 582                 rt2400pci_bbp_write(rt2x00dev, 13, ++reg);
 583                 rt2x00dev->link.vgc_level = reg;
 584         } else if (rt2x00dev->link.qual.false_cca < 100 && reg > 0x08) {
 585                 rt2400pci_bbp_write(rt2x00dev, 13, --reg);
 586                 rt2x00dev->link.vgc_level = reg;
 587         }
 588 }
 589
 590 /*
 591  * Initialization functions.
 592  */
 593 static void rt2400pci_init_rxentry(struct rt2x00_dev *rt2x00dev,
 594                                    struct queue_entry *entry)
 595 {
 596         struct queue_entry_priv_pci_rx *priv_rx = entry->priv_data;
 597         u32 word;
 598
 599         rt2x00_desc_read(priv_rx->desc, 2, &word);
 600         rt2x00_set_field32(&word, RXD_W2_BUFFER_LENGTH,
 601                            entry->queue->data_size);
 602         rt2x00_desc_write(priv_rx->desc, 2, word);
 603
 604         rt2x00_desc_read(priv_rx->desc, 1, &word);
 605         rt2x00_set_field32(&word, RXD_W1_BUFFER_ADDRESS, priv_rx->data_dma);
 606         rt2x00_desc_write(priv_rx->desc, 1, word);
 607
 608         rt2x00_desc_read(priv_rx->desc, 0, &word);
 609         rt2x00_set_field32(&word, RXD_W0_OWNER_NIC, 1);
 610         rt2x00_desc_write(priv_rx->desc, 0, word);
 611 }
 612
 613 static void rt2400pci_init_txentry(struct rt2x00_dev *rt2x00dev,
 614                                    struct queue_entry *entry)
 615 {
 616         struct queue_entry_priv_pci_tx *priv_tx = entry->priv_data;
 617         u32 word;
 618
 619         rt2x00_desc_read(priv_tx->desc, 1, &word);
 620         rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, priv_tx->data_dma);
 621         rt2x00_desc_write(priv_tx->desc, 1, word);
 622
 623         rt2x00_desc_read(priv_tx->desc, 2, &word);
 624         rt2x00_set_field32(&word, TXD_W2_BUFFER_LENGTH,
 625                            entry->queue->data_size);
 626         rt2x00_desc_write(priv_tx->desc, 2, word);
 627
 628         rt2x00_desc_read(priv_tx->desc, 0, &word);
 629         rt2x00_set_field32(&word, TXD_W0_VALID, 0);
 630         rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 0);
 631         rt2x00_desc_write(priv_tx->desc, 0, word);
 632 }
 633
 634 static int rt2400pci_init_queues(struct rt2x00_dev *rt2x00dev)
 635 {
 636         struct queue_entry_priv_pci_rx *priv_rx;
 637         struct queue_entry_priv_pci_tx *priv_tx;
 638         u32 reg;
 639
 640         /*
 641          * Initialize registers.
 642          */
 643         rt2x00pci_register_read(rt2x00dev, TXCSR2, &reg);
 644         rt2x00_set_field32(&reg, TXCSR2_TXD_SIZE, rt2x00dev->tx[0].desc_size);
 645         rt2x00_set_field32(&reg, TXCSR2_NUM_TXD, rt2x00dev->tx[1].limit);
 646         rt2x00_set_field32(&reg, TXCSR2_NUM_ATIM, rt2x00dev->bcn[1].limit);
 647         rt2x00_set_field32(&reg, TXCSR2_NUM_PRIO, rt2x00dev->tx[0].limit);
 648         rt2x00pci_register_write(rt2x00dev, TXCSR2, reg);
 649
 650         priv_tx = rt2x00dev->tx[1].entries[0].priv_data;
 651         rt2x00pci_register_read(rt2x00dev, TXCSR3, &reg);
 652         rt2x00_set_field32(&reg, TXCSR3_TX_RING_REGISTER,
 653                            priv_tx->desc_dma);
 654         rt2x00pci_register_write(rt2x00dev, TXCSR3, reg);
 655
 656         priv_tx = rt2x00dev->tx[0].entries[0].priv_data;
 657         rt2x00pci_register_read(rt2x00dev, TXCSR5, &reg);
 658         rt2x00_set_field32(&reg, TXCSR5_PRIO_RING_REGISTER,
 659                            priv_tx->desc_dma);
 660         rt2x00pci_register_write(rt2x00dev, TXCSR5, reg);
 661
 662         priv_tx = rt2x00dev->bcn[1].entries[0].priv_data;
 663         rt2x00pci_register_read(rt2x00dev, TXCSR4, &reg);
 664         rt2x00_set_field32(&reg, TXCSR4_ATIM_RING_REGISTER,
 665                            priv_tx->desc_dma);
 666         rt2x00pci_register_write(rt2x00dev, TXCSR4, reg);
 667
 668         priv_tx = rt2x00dev->bcn[0].entries[0].priv_data;
 669         rt2x00pci_register_read(rt2x00dev, TXCSR6, &reg);
 670         rt2x00_set_field32(&reg, TXCSR6_BEACON_RING_REGISTER,
 671                            priv_tx->desc_dma);
 672         rt2x00pci_register_write(rt2x00dev, TXCSR6, reg);
 673
 674         rt2x00pci_register_read(rt2x00dev, RXCSR1, &reg);
 675         rt2x00_set_field32(&reg, RXCSR1_RXD_SIZE, rt2x00dev->rx->desc_size);
 676         rt2x00_set_field32(&reg, RXCSR1_NUM_RXD, rt2x00dev->rx->limit);
 677         rt2x00pci_register_write(rt2x00dev, RXCSR1, reg);
 678
 679         priv_rx = rt2x00dev->rx->entries[0].priv_data;
 680         rt2x00pci_register_read(rt2x00dev, RXCSR2, &reg);
 681         rt2x00_set_field32(&reg, RXCSR2_RX_RING_REGISTER, priv_tx->desc_dma);
 682         rt2x00pci_register_write(rt2x00dev, RXCSR2, reg);
 683
 684         return 0;
 685 }
 686
 687 static int rt2400pci_init_registers(struct rt2x00_dev *rt2x00dev)
 688 {
 689         u32 reg;
 690
 691         rt2x00pci_register_write(rt2x00dev, PSCSR0, 0x00020002);
 692         rt2x00pci_register_write(rt2x00dev, PSCSR1, 0x00000002);
 693         rt2x00pci_register_write(rt2x00dev, PSCSR2, 0x00023f20);
 694         rt2x00pci_register_write(rt2x00dev, PSCSR3, 0x00000002);
 695
 696         rt2x00pci_register_read(rt2x00dev, TIMECSR, &reg);
 697         rt2x00_set_field32(&reg, TIMECSR_US_COUNT, 33);
 698         rt2x00_set_field32(&reg, TIMECSR_US_64_COUNT, 63);
 699         rt2x00_set_field32(&reg, TIMECSR_BEACON_EXPECT, 0);
 700         rt2x00pci_register_write(rt2x00dev, TIMECSR, reg);
 701
 702         rt2x00pci_register_read(rt2x00dev, CSR9, &reg);
 703         rt2x00_set_field32(&reg, CSR9_MAX_FRAME_UNIT,
 704                            (rt2x00dev->rx->data_size / 128));
 705         rt2x00pci_register_write(rt2x00dev, CSR9, reg);
 706
 707         rt2x00pci_register_read(rt2x00dev, LEDCSR, &reg);
 708         rt2x00_set_field32(&reg, LEDCSR_ON_PERIOD, 70);
 709         rt2x00_set_field32(&reg, LEDCSR_OFF_PERIOD, 30);
 710         rt2x00pci_register_write(rt2x00dev, LEDCSR, reg);
 711
 712         rt2x00pci_register_write(rt2x00dev, CNT3, 0x3f080000);
 713
 714         rt2x00pci_register_read(rt2x00dev, ARCSR0, &reg);
 715         rt2x00_set_field32(&reg, ARCSR0_AR_BBP_DATA0, 133);
 716         rt2x00_set_field32(&reg, ARCSR0_AR_BBP_ID0, 134);
 717         rt2x00_set_field32(&reg, ARCSR0_AR_BBP_DATA1, 136);
 718         rt2x00_set_field32(&reg, ARCSR0_AR_BBP_ID1, 135);
 719         rt2x00pci_register_write(rt2x00dev, ARCSR0, reg);
 720
 721         rt2x00pci_register_read(rt2x00dev, RXCSR3, &reg);
 722         rt2x00_set_field32(&reg, RXCSR3_BBP_ID0, 3); /* Tx power.*/
 723         rt2x00_set_field32(&reg, RXCSR3_BBP_ID0_VALID, 1);
 724         rt2x00_set_field32(&reg, RXCSR3_BBP_ID1, 32); /* Signal */
 725         rt2x00_set_field32(&reg, RXCSR3_BBP_ID1_VALID, 1);
 726         rt2x00_set_field32(&reg, RXCSR3_BBP_ID2, 36); /* Rssi */
 727         rt2x00_set_field32(&reg, RXCSR3_BBP_ID2_VALID, 1);
 728         rt2x00pci_register_write(rt2x00dev, RXCSR3, reg);
 729
 730         rt2x00pci_register_write(rt2x00dev, PWRCSR0, 0x3f3b3100);
 731
 732         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 733                 return -EBUSY;
 734
 735         rt2x00pci_register_write(rt2x00dev, MACCSR0, 0x00217223);
 736         rt2x00pci_register_write(rt2x00dev, MACCSR1, 0x00235518);
 737
 738         rt2x00pci_register_read(rt2x00dev, MACCSR2, &reg);
 739         rt2x00_set_field32(&reg, MACCSR2_DELAY, 64);
 740         rt2x00pci_register_write(rt2x00dev, MACCSR2, reg);
 741
 742         rt2x00pci_register_read(rt2x00dev, RALINKCSR, &reg);
 743         rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_DATA0, 17);
 744         rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_ID0, 154);
 745         rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_DATA1, 0);
 746         rt2x00_set_field32(&reg, RALINKCSR_AR_BBP_ID1, 154);
 747         rt2x00pci_register_write(rt2x00dev, RALINKCSR, reg);
 748
 749         rt2x00pci_register_read(rt2x00dev, CSR1, &reg);
 750         rt2x00_set_field32(&reg, CSR1_SOFT_RESET, 1);
 751         rt2x00_set_field32(&reg, CSR1_BBP_RESET, 0);
 752         rt2x00_set_field32(&reg, CSR1_HOST_READY, 0);
 753         rt2x00pci_register_write(rt2x00dev, CSR1, reg);
 754
 755         rt2x00pci_register_read(rt2x00dev, CSR1, &reg);
 756         rt2x00_set_field32(&reg, CSR1_SOFT_RESET, 0);
 757         rt2x00_set_field32(&reg, CSR1_HOST_READY, 1);
 758         rt2x00pci_register_write(rt2x00dev, CSR1, reg);
 759
 760         /*
 761          * We must clear the FCS and FIFO error count.
 762          * These registers are cleared on read,
 763          * so we may pass a useless variable to store the value.
 764          */
 765         rt2x00pci_register_read(rt2x00dev, CNT0, &reg);
 766         rt2x00pci_register_read(rt2x00dev, CNT4, &reg);
 767
 768         return 0;
 769 }
 770
 771 static int rt2400pci_init_bbp(struct rt2x00_dev *rt2x00dev)
 772 {
 773         unsigned int i;
 774         u16 eeprom;
 775         u8 reg_id;
 776         u8 value;
 777
 778         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 779                 rt2400pci_bbp_read(rt2x00dev, 0, &value);
 780                 if ((value != 0xff) && (value != 0x00))
 781                         goto continue_csr_init;
 782                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
 783                 udelay(REGISTER_BUSY_DELAY);
 784         }
 785
 786         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
 787         return -EACCES;
 788
 789 continue_csr_init:
 790         rt2400pci_bbp_write(rt2x00dev, 1, 0x00);
 791         rt2400pci_bbp_write(rt2x00dev, 3, 0x27);
 792         rt2400pci_bbp_write(rt2x00dev, 4, 0x08);
 793         rt2400pci_bbp_write(rt2x00dev, 10, 0x0f);
 794         rt2400pci_bbp_write(rt2x00dev, 15, 0x72);
 795         rt2400pci_bbp_write(rt2x00dev, 16, 0x74);
 796         rt2400pci_bbp_write(rt2x00dev, 17, 0x20);
 797         rt2400pci_bbp_write(rt2x00dev, 18, 0x72);
 798         rt2400pci_bbp_write(rt2x00dev, 19, 0x0b);
 799         rt2400pci_bbp_write(rt2x00dev, 20, 0x00);
 800         rt2400pci_bbp_write(rt2x00dev, 28, 0x11);
 801         rt2400pci_bbp_write(rt2x00dev, 29, 0x04);
 802         rt2400pci_bbp_write(rt2x00dev, 30, 0x21);
 803         rt2400pci_bbp_write(rt2x00dev, 31, 0x00);
 804
 805         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 806                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 807
 808                 if (eeprom != 0xffff && eeprom != 0x0000) {
 809                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 810                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 811                         rt2400pci_bbp_write(rt2x00dev, reg_id, value);
 812                 }
 813         }
 814
 815         return 0;
 816 }
 817
 818 /*
 819  * Device state switch handlers.
 820  */
 821 static void rt2400pci_toggle_rx(struct rt2x00_dev *rt2x00dev,
 822                                 enum dev_state state)
 823 {
 824         u32 reg;
 825
 826         rt2x00pci_register_read(rt2x00dev, RXCSR0, &reg);
 827         rt2x00_set_field32(&reg, RXCSR0_DISABLE_RX,
 828                            state == STATE_RADIO_RX_OFF);
 829         rt2x00pci_register_write(rt2x00dev, RXCSR0, reg);
 830 }
 831
 832 static void rt2400pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
 833                                  enum dev_state state)
 834 {
 835         int mask = (state == STATE_RADIO_IRQ_OFF);
 836         u32 reg;
 837
 838         /*
 839          * When interrupts are being enabled, the interrupt registers
 840          * should clear the register to assure a clean state.
 841          */
 842         if (state == STATE_RADIO_IRQ_ON) {
 843                 rt2x00pci_register_read(rt2x00dev, CSR7, &reg);
 844                 rt2x00pci_register_write(rt2x00dev, CSR7, reg);
 845         }
 846
 847         /*
 848          * Only toggle the interrupts bits we are going to use.
 849          * Non-checked interrupt bits are disabled by default.
 850          */
 851         rt2x00pci_register_read(rt2x00dev, CSR8, &reg);
 852         rt2x00_set_field32(&reg, CSR8_TBCN_EXPIRE, mask);
 853         rt2x00_set_field32(&reg, CSR8_TXDONE_TXRING, mask);
 854         rt2x00_set_field32(&reg, CSR8_TXDONE_ATIMRING, mask);
 855         rt2x00_set_field32(&reg, CSR8_TXDONE_PRIORING, mask);
 856         rt2x00_set_field32(&reg, CSR8_RXDONE, mask);
 857         rt2x00pci_register_write(rt2x00dev, CSR8, reg);
 858 }
 859
 860 static int rt2400pci_enable_radio(struct rt2x00_dev *rt2x00dev)
 861 {
 862         /*
 863          * Initialize all registers.
 864          */
 865         if (rt2400pci_init_queues(rt2x00dev) ||
 866             rt2400pci_init_registers(rt2x00dev) ||
 867             rt2400pci_init_bbp(rt2x00dev)) {
 868                 ERROR(rt2x00dev, "Register initialization failed.\n");
 869                 return -EIO;
 870         }
 871
 872         /*
 873          * Enable interrupts.
 874          */
 875         rt2400pci_toggle_irq(rt2x00dev, STATE_RADIO_IRQ_ON);
 876
 877         return 0;
 878 }
 879
 880 static void rt2400pci_disable_radio(struct rt2x00_dev *rt2x00dev)
 881 {
 882         u32 reg;
 883
 884         rt2x00pci_register_write(rt2x00dev, PWRCSR0, 0);
 885
 886         /*
 887          * Disable synchronisation.
 888          */
 889         rt2x00pci_register_write(rt2x00dev, CSR14, 0);
 890
 891         /*
 892          * Cancel RX and TX.
 893          */
 894         rt2x00pci_register_read(rt2x00dev, TXCSR0, &reg);
 895         rt2x00_set_field32(&reg, TXCSR0_ABORT, 1);
 896         rt2x00pci_register_write(rt2x00dev, TXCSR0, reg);
 897
 898         /*
 899          * Disable interrupts.
 900          */
 901         rt2400pci_toggle_irq(rt2x00dev, STATE_RADIO_IRQ_OFF);
 902 }
 903
 904 static int rt2400pci_set_state(struct rt2x00_dev *rt2x00dev,
 905                                enum dev_state state)
 906 {
 907         u32 reg;
 908         unsigned int i;
 909         char put_to_sleep;
 910         char bbp_state;
 911         char rf_state;
 912
 913         put_to_sleep = (state != STATE_AWAKE);
 914
 915         rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg);
 916         rt2x00_set_field32(&reg, PWRCSR1_SET_STATE, 1);
 917         rt2x00_set_field32(&reg, PWRCSR1_BBP_DESIRE_STATE, state);
 918         rt2x00_set_field32(&reg, PWRCSR1_RF_DESIRE_STATE, state);
 919         rt2x00_set_field32(&reg, PWRCSR1_PUT_TO_SLEEP, put_to_sleep);
 920         rt2x00pci_register_write(rt2x00dev, PWRCSR1, reg);
 921
 922         /*
 923          * Device is not guaranteed to be in the requested state yet.
 924          * We must wait until the register indicates that the
 925          * device has entered the correct state.
 926          */
 927         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 928                 rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg);
 929                 bbp_state = rt2x00_get_field32(reg, PWRCSR1_BBP_CURR_STATE);
 930                 rf_state = rt2x00_get_field32(reg, PWRCSR1_RF_CURR_STATE);
 931                 if (bbp_state == state && rf_state == state)
 932                         return 0;
 933                 msleep(10);
 934         }
 935
 936         NOTICE(rt2x00dev, "Device failed to enter state %d, "
 937                "current device state: bbp %d and rf %d.\n",
 938                state, bbp_state, rf_state);
 939
 940         return -EBUSY;
 941 }
 942
 943 static int rt2400pci_set_device_state(struct rt2x00_dev *rt2x00dev,
 944                                       enum dev_state state)
 945 {
 946         int retval = 0;
 947
 948         switch (state) {
 949         case STATE_RADIO_ON:
 950                 retval = rt2400pci_enable_radio(rt2x00dev);
 951                 break;
 952         case STATE_RADIO_OFF:
 953                 rt2400pci_disable_radio(rt2x00dev);
 954                 break;
 955         case STATE_RADIO_RX_ON:
 956         case STATE_RADIO_RX_ON_LINK:
 957                 rt2400pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
 958                 break;
 959         case STATE_RADIO_RX_OFF:
 960         case STATE_RADIO_RX_OFF_LINK:
 961                 rt2400pci_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
 962                 break;
 963         case STATE_DEEP_SLEEP:
 964         case STATE_SLEEP:
 965         case STATE_STANDBY:
 966         case STATE_AWAKE:
 967                 retval = rt2400pci_set_state(rt2x00dev, state);
 968                 break;
 969         default:
 970                 retval = -ENOTSUPP;
 971                 break;
 972         }
 973
 974         return retval;
 975 }
 976
 977 /*
 978  * TX descriptor initialization
 979  */
 980 static void rt2400pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 981                                     struct sk_buff *skb,
 982                                     struct txentry_desc *txdesc,
 983                                     struct ieee80211_tx_control *control)
 984 {
 985         struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
 986         __le32 *txd = skbdesc->desc;
 987         u32 word;
 988
 989         /*
 990          * Start writing the descriptor words.
 991          */
 992         rt2x00_desc_read(txd, 2, &word);
 993         rt2x00_set_field32(&word, TXD_W2_DATABYTE_COUNT, skbdesc->data_len);
 994         rt2x00_desc_write(txd, 2, word);
 995
 996         rt2x00_desc_read(txd, 3, &word);
 997         rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, txdesc->signal);
 998         rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL_REGNUM, 5);
 999         rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL_BUSY, 1);
1000         rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE, txdesc->service);
1001         rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE_REGNUM, 6);
1002         rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE_BUSY, 1);
1003         rt2x00_desc_write(txd, 3, word);
1004
1005         rt2x00_desc_read(txd, 4, &word);
1006         rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_LOW, txdesc->length_low);
1007         rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW_REGNUM, 8);
1008         rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW_BUSY, 1);
1009         rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_HIGH, txdesc->length_high);
1010         rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH_REGNUM, 7);
1011         rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH_BUSY, 1);
1012         rt2x00_desc_write(txd, 4, word);
1013
1014         rt2x00_desc_read(txd, 0, &word);
1015         rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 1);
1016         rt2x00_set_field32(&word, TXD_W0_VALID, 1);
1017         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1018                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1019         rt2x00_set_field32(&word, TXD_W0_ACK,
1020                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1021         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1022                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1023         rt2x00_set_field32(&word, TXD_W0_RTS,
1024                            test_bit(ENTRY_TXD_RTS_FRAME, &txdesc->flags));
1025         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1026         rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
1027                            !!(control->flags &
1028                               IEEE80211_TXCTL_LONG_RETRY_LIMIT));
1029         rt2x00_desc_write(txd, 0, word);
1030 }
1031
1032 /*
1033  * TX data initialization
1034  */
1035 static void rt2400pci_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1036                                     const unsigned int queue)
1037 {
1038         u32 reg;
1039
1040         if (queue == RT2X00_BCN_QUEUE_BEACON) {
1041                 rt2x00pci_register_read(rt2x00dev, CSR14, &reg);
1042                 if (!rt2x00_get_field32(reg, CSR14_BEACON_GEN)) {
1043                         rt2x00_set_field32(&reg, CSR14_BEACON_GEN, 1);
1044                         rt2x00pci_register_write(rt2x00dev, CSR14, reg);
1045                 }
1046                 return;
1047         }
1048
1049         rt2x00pci_register_read(rt2x00dev, TXCSR0, &reg);
1050         rt2x00_set_field32(&reg, TXCSR0_KICK_PRIO,
1051                            (queue == IEEE80211_TX_QUEUE_DATA0));
1052         rt2x00_set_field32(&reg, TXCSR0_KICK_TX,
1053                            (queue == IEEE80211_TX_QUEUE_DATA1));
1054         rt2x00_set_field32(&reg, TXCSR0_KICK_ATIM,
1055                            (queue == RT2X00_BCN_QUEUE_ATIM));
1056         rt2x00pci_register_write(rt2x00dev, TXCSR0, reg);
1057 }
1058
1059 /*
1060  * RX control handlers
1061  */
1062 static void rt2400pci_fill_rxdone(struct queue_entry *entry,
1063                                   struct rxdone_entry_desc *rxdesc)
1064 {
1065         struct queue_entry_priv_pci_rx *priv_rx = entry->priv_data;
1066         u32 word0;
1067         u32 word2;
1068
1069         rt2x00_desc_read(priv_rx->desc, 0, &word0);
1070         rt2x00_desc_read(priv_rx->desc, 2, &word2);
1071
1072         rxdesc->flags = 0;
1073         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1074                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1075         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1076                 rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1077
1078         /*
1079          * Obtain the status about this packet.
1080          */
1081         rxdesc->signal = rt2x00_get_field32(word2, RXD_W2_SIGNAL);
1082         rxdesc->rssi = rt2x00_get_field32(word2, RXD_W2_RSSI) -
1083             entry->queue->rt2x00dev->rssi_offset;
1084         rxdesc->ofdm = 0;
1085         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1086         rxdesc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
1087 }
1088
1089 /*
1090  * Interrupt functions.
1091  */
1092 static void rt2400pci_txdone(struct rt2x00_dev *rt2x00dev,
1093                              const enum ieee80211_tx_queue queue_idx)
1094 {
1095         struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, queue_idx);
1096         struct queue_entry_priv_pci_tx *priv_tx;
1097         struct queue_entry *entry;
1098         struct txdone_entry_desc txdesc;
1099         u32 word;
1100
1101         while (!rt2x00queue_empty(queue)) {
1102                 entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
1103                 priv_tx = entry->priv_data;
1104                 rt2x00_desc_read(priv_tx->desc, 0, &word);
1105
1106                 if (rt2x00_get_field32(word, TXD_W0_OWNER_NIC) ||
1107                     !rt2x00_get_field32(word, TXD_W0_VALID))
1108                         break;
1109
1110                 /*
1111                  * Obtain the status about this packet.
1112                  */
1113                 txdesc.status = rt2x00_get_field32(word, TXD_W0_RESULT);
1114                 txdesc.retry = rt2x00_get_field32(word, TXD_W0_RETRY_COUNT);
1115
1116                 rt2x00pci_txdone(rt2x00dev, entry, &txdesc);
1117         }
1118 }
1119
1120 static irqreturn_t rt2400pci_interrupt(int irq, void *dev_instance)
1121 {
1122         struct rt2x00_dev *rt2x00dev = dev_instance;
1123         u32 reg;
1124
1125         /*
1126          * Get the interrupt sources & saved to local variable.
1127          * Write register value back to clear pending interrupts.
1128          */
1129         rt2x00pci_register_read(rt2x00dev, CSR7, &reg);
1130         rt2x00pci_register_write(rt2x00dev, CSR7, reg);
1131
1132         if (!reg)
1133                 return IRQ_NONE;
1134
1135         if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
1136                 return IRQ_HANDLED;
1137
1138         /*
1139          * Handle interrupts, walk through all bits
1140          * and run the tasks, the bits are checked in order of
1141          * priority.
1142          */
1143
1144         /*
1145          * 1 - Beacon timer expired interrupt.
1146          */
1147         if (rt2x00_get_field32(reg, CSR7_TBCN_EXPIRE))
1148                 rt2x00lib_beacondone(rt2x00dev);
1149
1150         /*
1151          * 2 - Rx ring done interrupt.
1152          */
1153         if (rt2x00_get_field32(reg, CSR7_RXDONE))
1154                 rt2x00pci_rxdone(rt2x00dev);
1155
1156         /*
1157          * 3 - Atim ring transmit done interrupt.
1158          */
1159         if (rt2x00_get_field32(reg, CSR7_TXDONE_ATIMRING))
1160                 rt2400pci_txdone(rt2x00dev, RT2X00_BCN_QUEUE_ATIM);
1161
1162         /*
1163          * 4 - Priority ring transmit done interrupt.
1164          */
1165         if (rt2x00_get_field32(reg, CSR7_TXDONE_PRIORING))
1166                 rt2400pci_txdone(rt2x00dev, IEEE80211_TX_QUEUE_DATA0);
1167
1168         /*
1169          * 5 - Tx ring transmit done interrupt.
1170          */
1171         if (rt2x00_get_field32(reg, CSR7_TXDONE_TXRING))
1172                 rt2400pci_txdone(rt2x00dev, IEEE80211_TX_QUEUE_DATA1);
1173
1174         return IRQ_HANDLED;
1175 }
1176
1177 /*
1178  * Device probe functions.
1179  */
1180 static int rt2400pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1181 {
1182         struct eeprom_93cx6 eeprom;
1183         u32 reg;
1184         u16 word;
1185         u8 *mac;
1186
1187         rt2x00pci_register_read(rt2x00dev, CSR21, &reg);
1188
1189         eeprom.data = rt2x00dev;
1190         eeprom.register_read = rt2400pci_eepromregister_read;
1191         eeprom.register_write = rt2400pci_eepromregister_write;
1192         eeprom.width = rt2x00_get_field32(reg, CSR21_TYPE_93C46) ?
1193             PCI_EEPROM_WIDTH_93C46 : PCI_EEPROM_WIDTH_93C66;
1194         eeprom.reg_data_in = 0;
1195         eeprom.reg_data_out = 0;
1196         eeprom.reg_data_clock = 0;
1197         eeprom.reg_chip_select = 0;
1198
1199         eeprom_93cx6_multiread(&eeprom, EEPROM_BASE, rt2x00dev->eeprom,
1200                                EEPROM_SIZE / sizeof(u16));
1201
1202         /*
1203          * Start validation of the data that has been read.
1204          */
1205         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1206         if (!is_valid_ether_addr(mac)) {
1207                 DECLARE_MAC_BUF(macbuf);
1208
1209                 random_ether_addr(mac);
1210                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1211         }
1212
1213         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1214         if (word == 0xffff) {
1215                 ERROR(rt2x00dev, "Invalid EEPROM data detected.\n");
1216                 return -EINVAL;
1217         }
1218
1219         return 0;
1220 }
1221
1222 static int rt2400pci_init_eeprom(struct rt2x00_dev *rt2x00dev)
1223 {
1224         u32 reg;
1225         u16 value;
1226         u16 eeprom;
1227
1228         /*
1229          * Read EEPROM word for configuration.
1230          */
1231         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1232
1233         /*
1234          * Identify RF chipset.
1235          */
1236         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1237         rt2x00pci_register_read(rt2x00dev, CSR0, &reg);
1238         rt2x00_set_chip(rt2x00dev, RT2460, value, reg);
1239
1240         if (!rt2x00_rf(&rt2x00dev->chip, RF2420) &&
1241             !rt2x00_rf(&rt2x00dev->chip, RF2421)) {
1242                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1243                 return -ENODEV;
1244         }
1245
1246         /*
1247          * Identify default antenna configuration.
1248          */
1249         rt2x00dev->default_ant.tx =
1250             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1251         rt2x00dev->default_ant.rx =
1252             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1253
1254         /*
1255          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1256          * I am not 100% sure about this, but the legacy drivers do not
1257          * indicate antenna swapping in software is required when
1258          * diversity is enabled.
1259          */
1260         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1261                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1262         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1263                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1264
1265         /*
1266          * Store led mode, for correct led behaviour.
1267          */
1268 #ifdef CONFIG_RT2400PCI_LEDS
1269         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1270
1271         switch (value) {
1272         case LED_MODE_ASUS:
1273         case LED_MODE_ALPHA:
1274         case LED_MODE_DEFAULT:
1275                 rt2x00dev->led_flags = LED_SUPPORT_RADIO;
1276                 break;
1277         case LED_MODE_TXRX_ACTIVITY:
1278                 rt2x00dev->led_flags =
1279                     LED_SUPPORT_RADIO | LED_SUPPORT_ACTIVITY;
1280                 break;
1281         case LED_MODE_SIGNAL_STRENGTH:
1282                 rt2x00dev->led_flags = LED_SUPPORT_RADIO;
1283                 break;
1284         }
1285 #endif /* CONFIG_RT2400PCI_LEDS */
1286
1287         /*
1288          * Detect if this device has an hardware controlled radio.
1289          */
1290 #ifdef CONFIG_RT2400PCI_RFKILL
1291         if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_HARDWARE_RADIO))
1292                 __set_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags);
1293 #endif /* CONFIG_RT2400PCI_RFKILL */
1294
1295         /*
1296          * Check if the BBP tuning should be enabled.
1297          */
1298         if (!rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_AGCVGC_TUNING))
1299                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1300
1301         return 0;
1302 }
1303
1304 /*
1305  * RF value list for RF2420 & RF2421
1306  * Supports: 2.4 GHz
1307  */
1308 static const struct rf_channel rf_vals_bg[] = {
1309         { 1,  0x00022058, 0x000c1fda, 0x00000101, 0 },
1310         { 2,  0x00022058, 0x000c1fee, 0x00000101, 0 },
1311         { 3,  0x00022058, 0x000c2002, 0x00000101, 0 },
1312         { 4,  0x00022058, 0x000c2016, 0x00000101, 0 },
1313         { 5,  0x00022058, 0x000c202a, 0x00000101, 0 },
1314         { 6,  0x00022058, 0x000c203e, 0x00000101, 0 },
1315         { 7,  0x00022058, 0x000c2052, 0x00000101, 0 },
1316         { 8,  0x00022058, 0x000c2066, 0x00000101, 0 },
1317         { 9,  0x00022058, 0x000c207a, 0x00000101, 0 },
1318         { 10, 0x00022058, 0x000c208e, 0x00000101, 0 },
1319         { 11, 0x00022058, 0x000c20a2, 0x00000101, 0 },
1320         { 12, 0x00022058, 0x000c20b6, 0x00000101, 0 },
1321         { 13, 0x00022058, 0x000c20ca, 0x00000101, 0 },
1322         { 14, 0x00022058, 0x000c20fa, 0x00000101, 0 },
1323 };
1324
1325 static void rt2400pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1326 {
1327         struct hw_mode_spec *spec = &rt2x00dev->spec;
1328         u8 *txpower;
1329         unsigned int i;
1330
1331         /*
1332          * Initialize all hw fields.
1333          */
1334         rt2x00dev->hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1335         rt2x00dev->hw->extra_tx_headroom = 0;
1336         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1337         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1338         rt2x00dev->hw->queues = 2;
1339
1340         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_pci(rt2x00dev)->dev);
1341         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1342                                 rt2x00_eeprom_addr(rt2x00dev,
1343                                                    EEPROM_MAC_ADDR_0));
1344
1345         /*
1346          * Convert tx_power array in eeprom.
1347          */
1348         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1349         for (i = 0; i < 14; i++)
1350                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1351
1352         /*
1353          * Initialize hw_mode information.
1354          */
1355         spec->num_modes = 1;
1356         spec->num_rates = 4;
1357         spec->tx_power_a = NULL;
1358         spec->tx_power_bg = txpower;
1359         spec->tx_power_default = DEFAULT_TXPOWER;
1360
1361         spec->num_channels = ARRAY_SIZE(rf_vals_bg);
1362         spec->channels = rf_vals_bg;
1363 }
1364
1365 static int rt2400pci_probe_hw(struct rt2x00_dev *rt2x00dev)
1366 {
1367         int retval;
1368
1369         /*
1370          * Allocate eeprom data.
1371          */
1372         retval = rt2400pci_validate_eeprom(rt2x00dev);
1373         if (retval)
1374                 return retval;
1375
1376         retval = rt2400pci_init_eeprom(rt2x00dev);
1377         if (retval)
1378                 return retval;
1379
1380         /*
1381          * Initialize hw specifications.
1382          */
1383         rt2400pci_probe_hw_mode(rt2x00dev);
1384
1385         /*
1386          * This device requires the atim queue
1387          */
1388         __set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
1389
1390         /*
1391          * Set the rssi offset.
1392          */
1393         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1394
1395         return 0;
1396 }
1397
1398 /*
1399  * IEEE80211 stack callback functions.
1400  */
1401 static void rt2400pci_configure_filter(struct ieee80211_hw *hw,
1402                                        unsigned int changed_flags,
1403                                        unsigned int *total_flags,
1404                                        int mc_count,
1405                                        struct dev_addr_list *mc_list)
1406 {
1407         struct rt2x00_dev *rt2x00dev = hw->priv;
1408         u32 reg;
1409
1410         /*
1411          * Mask off any flags we are going to ignore from
1412          * the total_flags field.
1413          */
1414         *total_flags &=
1415             FIF_ALLMULTI |
1416             FIF_FCSFAIL |
1417             FIF_PLCPFAIL |
1418             FIF_CONTROL |
1419             FIF_OTHER_BSS |
1420             FIF_PROMISC_IN_BSS;
1421
1422         /*
1423          * Apply some rules to the filters:
1424          * - Some filters imply different filters to be set.
1425          * - Some things we can't filter out at all.
1426          */
1427         *total_flags |= FIF_ALLMULTI;
1428         if (*total_flags & FIF_OTHER_BSS ||
1429             *total_flags & FIF_PROMISC_IN_BSS)
1430                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1431
1432         /*
1433          * Check if there is any work left for us.
1434          */
1435         if (rt2x00dev->packet_filter == *total_flags)
1436                 return;
1437         rt2x00dev->packet_filter = *total_flags;
1438
1439         /*
1440          * Start configuration steps.
1441          * Note that the version error will always be dropped
1442          * since there is no filter for it at this time.
1443          */
1444         rt2x00pci_register_read(rt2x00dev, RXCSR0, &reg);
1445         rt2x00_set_field32(&reg, RXCSR0_DROP_CRC,
1446                            !(*total_flags & FIF_FCSFAIL));
1447         rt2x00_set_field32(&reg, RXCSR0_DROP_PHYSICAL,
1448                            !(*total_flags & FIF_PLCPFAIL));
1449         rt2x00_set_field32(&reg, RXCSR0_DROP_CONTROL,
1450                            !(*total_flags & FIF_CONTROL));
1451         rt2x00_set_field32(&reg, RXCSR0_DROP_NOT_TO_ME,
1452                            !(*total_flags & FIF_PROMISC_IN_BSS));
1453         rt2x00_set_field32(&reg, RXCSR0_DROP_TODS,
1454                            !(*total_flags & FIF_PROMISC_IN_BSS));
1455         rt2x00_set_field32(&reg, RXCSR0_DROP_VERSION_ERROR, 1);
1456         rt2x00pci_register_write(rt2x00dev, RXCSR0, reg);
1457 }
1458
1459 static int rt2400pci_set_retry_limit(struct ieee80211_hw *hw,
1460                                      u32 short_retry, u32 long_retry)
1461 {
1462         struct rt2x00_dev *rt2x00dev = hw->priv;
1463         u32 reg;
1464
1465         rt2x00pci_register_read(rt2x00dev, CSR11, &reg);
1466         rt2x00_set_field32(&reg, CSR11_LONG_RETRY, long_retry);
1467         rt2x00_set_field32(&reg, CSR11_SHORT_RETRY, short_retry);
1468         rt2x00pci_register_write(rt2x00dev, CSR11, reg);
1469
1470         return 0;
1471 }
1472
1473 static int rt2400pci_conf_tx(struct ieee80211_hw *hw,
1474                              int queue,
1475                              const struct ieee80211_tx_queue_params *params)
1476 {
1477         struct rt2x00_dev *rt2x00dev = hw->priv;
1478
1479         /*
1480          * We don't support variating cw_min and cw_max variables
1481          * per queue. So by default we only configure the TX queue,
1482          * and ignore all other configurations.
1483          */
1484         if (queue != IEEE80211_TX_QUEUE_DATA0)
1485                 return -EINVAL;
1486
1487         if (rt2x00mac_conf_tx(hw, queue, params))
1488                 return -EINVAL;
1489
1490         /*
1491          * Write configuration to register.
1492          */
1493         rt2400pci_config_cw(rt2x00dev,
1494                             rt2x00dev->tx->cw_min, rt2x00dev->tx->cw_max);
1495
1496         return 0;
1497 }
1498
1499 static u64 rt2400pci_get_tsf(struct ieee80211_hw *hw)
1500 {
1501         struct rt2x00_dev *rt2x00dev = hw->priv;
1502         u64 tsf;
1503         u32 reg;
1504
1505         rt2x00pci_register_read(rt2x00dev, CSR17, &reg);
1506         tsf = (u64) rt2x00_get_field32(reg, CSR17_HIGH_TSFTIMER) << 32;
1507         rt2x00pci_register_read(rt2x00dev, CSR16, &reg);
1508         tsf |= rt2x00_get_field32(reg, CSR16_LOW_TSFTIMER);
1509
1510         return tsf;
1511 }
1512
1513 static void rt2400pci_reset_tsf(struct ieee80211_hw *hw)
1514 {
1515         struct rt2x00_dev *rt2x00dev = hw->priv;
1516
1517         rt2x00pci_register_write(rt2x00dev, CSR16, 0);
1518         rt2x00pci_register_write(rt2x00dev, CSR17, 0);
1519 }
1520
1521 static int rt2400pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
1522                                    struct ieee80211_tx_control *control)
1523 {
1524         struct rt2x00_dev *rt2x00dev = hw->priv;
1525         struct rt2x00_intf *intf = vif_to_intf(control->vif);
1526         struct queue_entry_priv_pci_tx *priv_tx;
1527         struct skb_frame_desc *skbdesc;
1528
1529         if (unlikely(!intf->beacon))
1530                 return -ENOBUFS;
1531
1532         priv_tx = intf->beacon->priv_data;
1533
1534         /*
1535          * Fill in skb descriptor
1536          */
1537         skbdesc = get_skb_frame_desc(skb);
1538         memset(skbdesc, 0, sizeof(*skbdesc));
1539         skbdesc->flags |= FRAME_DESC_DRIVER_GENERATED;
1540         skbdesc->data = skb->data;
1541         skbdesc->data_len = skb->len;
1542         skbdesc->desc = priv_tx->desc;
1543         skbdesc->desc_len = intf->beacon->queue->desc_size;
1544         skbdesc->entry = intf->beacon;
1545
1546         /*
1547          * mac80211 doesn't provide the control->queue variable
1548          * for beacons. Set our own queue identification so
1549          * it can be used during descriptor initialization.
1550          */
1551         control->queue = RT2X00_BCN_QUEUE_BEACON;
1552         rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
1553
1554         /*
1555          * Enable beacon generation.
1556          * Write entire beacon with descriptor to register,
1557          * and kick the beacon generator.
1558          */
1559         memcpy(priv_tx->data, skb->data, skb->len);
1560         rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, control->queue);
1561
1562         return 0;
1563 }
1564
1565 static int rt2400pci_tx_last_beacon(struct ieee80211_hw *hw)
1566 {
1567         struct rt2x00_dev *rt2x00dev = hw->priv;
1568         u32 reg;
1569
1570         rt2x00pci_register_read(rt2x00dev, CSR15, &reg);
1571         return rt2x00_get_field32(reg, CSR15_BEACON_SENT);
1572 }
1573
1574 static const struct ieee80211_ops rt2400pci_mac80211_ops = {
1575         .tx                     = rt2x00mac_tx,
1576         .start                  = rt2x00mac_start,
1577         .stop                   = rt2x00mac_stop,
1578         .add_interface          = rt2x00mac_add_interface,
1579         .remove_interface       = rt2x00mac_remove_interface,
1580         .config                 = rt2x00mac_config,
1581         .config_interface       = rt2x00mac_config_interface,
1582         .configure_filter       = rt2400pci_configure_filter,
1583         .get_stats              = rt2x00mac_get_stats,
1584         .set_retry_limit        = rt2400pci_set_retry_limit,
1585         .bss_info_changed       = rt2x00mac_bss_info_changed,
1586         .conf_tx                = rt2400pci_conf_tx,
1587         .get_tx_stats           = rt2x00mac_get_tx_stats,
1588         .get_tsf                = rt2400pci_get_tsf,
1589         .reset_tsf              = rt2400pci_reset_tsf,
1590         .beacon_update          = rt2400pci_beacon_update,
1591         .tx_last_beacon         = rt2400pci_tx_last_beacon,
1592 };
1593
1594 static const struct rt2x00lib_ops rt2400pci_rt2x00_ops = {
1595         .irq_handler            = rt2400pci_interrupt,
1596         .probe_hw               = rt2400pci_probe_hw,
1597         .initialize             = rt2x00pci_initialize,
1598         .uninitialize           = rt2x00pci_uninitialize,
1599         .init_rxentry           = rt2400pci_init_rxentry,
1600         .init_txentry           = rt2400pci_init_txentry,
1601         .set_device_state       = rt2400pci_set_device_state,
1602         .rfkill_poll            = rt2400pci_rfkill_poll,
1603         .link_stats             = rt2400pci_link_stats,
1604         .reset_tuner            = rt2400pci_reset_tuner,
1605         .link_tuner             = rt2400pci_link_tuner,
1606         .led_brightness         = rt2400pci_led_brightness,
1607         .write_tx_desc          = rt2400pci_write_tx_desc,
1608         .write_tx_data          = rt2x00pci_write_tx_data,
1609         .kick_tx_queue          = rt2400pci_kick_tx_queue,
1610         .fill_rxdone            = rt2400pci_fill_rxdone,
1611         .config_intf            = rt2400pci_config_intf,
1612         .config_preamble        = rt2400pci_config_preamble,
1613         .config                 = rt2400pci_config,
1614 };
1615
1616 static const struct data_queue_desc rt2400pci_queue_rx = {
1617         .entry_num              = RX_ENTRIES,
1618         .data_size              = DATA_FRAME_SIZE,
1619         .desc_size              = RXD_DESC_SIZE,
1620         .priv_size              = sizeof(struct queue_entry_priv_pci_rx),
1621 };
1622
1623 static const struct data_queue_desc rt2400pci_queue_tx = {
1624         .entry_num              = TX_ENTRIES,
1625         .data_size              = DATA_FRAME_SIZE,
1626         .desc_size              = TXD_DESC_SIZE,
1627         .priv_size              = sizeof(struct queue_entry_priv_pci_tx),
1628 };
1629
1630 static const struct data_queue_desc rt2400pci_queue_bcn = {
1631         .entry_num              = BEACON_ENTRIES,
1632         .data_size              = MGMT_FRAME_SIZE,
1633         .desc_size              = TXD_DESC_SIZE,
1634         .priv_size              = sizeof(struct queue_entry_priv_pci_tx),
1635 };
1636
1637 static const struct data_queue_desc rt2400pci_queue_atim = {
1638         .entry_num              = ATIM_ENTRIES,
1639         .data_size              = DATA_FRAME_SIZE,
1640         .desc_size              = TXD_DESC_SIZE,
1641         .priv_size              = sizeof(struct queue_entry_priv_pci_tx),
1642 };
1643
1644 static const struct rt2x00_ops rt2400pci_ops = {
1645         .name           = KBUILD_MODNAME,
1646         .max_sta_intf   = 1,
1647         .max_ap_intf    = 1,
1648         .eeprom_size    = EEPROM_SIZE,
1649         .rf_size        = RF_SIZE,
1650         .rx             = &rt2400pci_queue_rx,
1651         .tx             = &rt2400pci_queue_tx,
1652         .bcn            = &rt2400pci_queue_bcn,
1653         .atim           = &rt2400pci_queue_atim,
1654         .lib            = &rt2400pci_rt2x00_ops,
1655         .hw             = &rt2400pci_mac80211_ops,
1656 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1657         .debugfs        = &rt2400pci_rt2x00debug,
1658 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1659 };
1660
1661 /*
1662  * RT2400pci module information.
1663  */
1664 static struct pci_device_id rt2400pci_device_table[] = {
1665         { PCI_DEVICE(0x1814, 0x0101), PCI_DEVICE_DATA(&rt2400pci_ops) },
1666         { 0, }
1667 };
1668
1669 MODULE_AUTHOR(DRV_PROJECT);
1670 MODULE_VERSION(DRV_VERSION);
1671 MODULE_DESCRIPTION("Ralink RT2400 PCI & PCMCIA Wireless LAN driver.");
1672 MODULE_SUPPORTED_DEVICE("Ralink RT2460 PCI & PCMCIA chipset based cards");
1673 MODULE_DEVICE_TABLE(pci, rt2400pci_device_table);
1674 MODULE_LICENSE("GPL");
1675
1676 static struct pci_driver rt2400pci_driver = {
1677         .name           = KBUILD_MODNAME,
1678         .id_table       = rt2400pci_device_table,
1679         .probe          = rt2x00pci_probe,
1680         .remove         = __devexit_p(rt2x00pci_remove),
1681         .suspend        = rt2x00pci_suspend,
1682         .resume         = rt2x00pci_resume,
1683 };
1684
1685 static int __init rt2400pci_init(void)
1686 {
1687         return pci_register_driver(&rt2400pci_driver);
1688 }
1689
1690 static void __exit rt2400pci_exit(void)
1691 {
1692         pci_unregister_driver(&rt2400pci_driver);
1693 }
1694
1695 module_init(rt2400pci_init);
1696 module_exit(rt2400pci_exit);