SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/rt2x00/rt2500usb.c

   1 /*
   2         Copyright (C) 2004 - 2009 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: rt2500usb
  23         Abstract: rt2500usb device specific routines.
  24         Supported chipsets: RT2570.
  25  */
  26
  27 #include <linux/delay.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/init.h>
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/usb.h>
  33
  34 #include "rt2x00.h"
  35 #include "rt2x00usb.h"
  36 #include "rt2500usb.h"
  37
  38 /*
  39  * Allow hardware encryption to be disabled.
  40  */
  41 static int modparam_nohwcrypt = 0;
  42 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
  43 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  44
  45 /*
  46  * Register access.
  47  * All access to the CSR registers will go through the methods
  48  * rt2500usb_register_read and rt2500usb_register_write.
  49  * BBP and RF register require indirect register access,
  50  * and use the CSR registers BBPCSR and RFCSR to achieve this.
  51  * These indirect registers work with busy bits,
  52  * and we will try maximal REGISTER_BUSY_COUNT times to access
  53  * the register while taking a REGISTER_BUSY_DELAY us delay
  54  * between each attampt. When the busy bit is still set at that time,
  55  * the access attempt is considered to have failed,
  56  * and we will print an error.
  57  * If the csr_mutex is already held then the _lock variants must
  58  * be used instead.
  59  */
  60 static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
  61                                            const unsigned int offset,
  62                                            u16 *value)
  63 {
  64         __le16 reg;
  65         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  66                                       USB_VENDOR_REQUEST_IN, offset,
  67                                       &reg, sizeof(reg), REGISTER_TIMEOUT);
  68         *value = le16_to_cpu(reg);
  69 }
  70
  71 static inline void rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
  72                                                 const unsigned int offset,
  73                                                 u16 *value)
  74 {
  75         __le16 reg;
  76         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
  77                                        USB_VENDOR_REQUEST_IN, offset,
  78                                        &reg, sizeof(reg), REGISTER_TIMEOUT);
  79         *value = le16_to_cpu(reg);
  80 }
  81
  82 static inline void rt2500usb_register_multiread(struct rt2x00_dev *rt2x00dev,
  83                                                 const unsigned int offset,
  84                                                 void *value, const u16 length)
  85 {
  86         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  87                                       USB_VENDOR_REQUEST_IN, offset,
  88                                       value, length,
  89                                       REGISTER_TIMEOUT16(length));
  90 }
  91
  92 static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
  93                                             const unsigned int offset,
  94                                             u16 value)
  95 {
  96         __le16 reg = cpu_to_le16(value);
  97         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
  98                                       USB_VENDOR_REQUEST_OUT, offset,
  99                                       &reg, sizeof(reg), REGISTER_TIMEOUT);
 100 }
 101
 102 static inline void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
 103                                                  const unsigned int offset,
 104                                                  u16 value)
 105 {
 106         __le16 reg = cpu_to_le16(value);
 107         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE,
 108                                        USB_VENDOR_REQUEST_OUT, offset,
 109                                        &reg, sizeof(reg), REGISTER_TIMEOUT);
 110 }
 111
 112 static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
 113                                                  const unsigned int offset,
 114                                                  void *value, const u16 length)
 115 {
 116         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
 117                                       USB_VENDOR_REQUEST_OUT, offset,
 118                                       value, length,
 119                                       REGISTER_TIMEOUT16(length));
 120 }
 121
 122 static int rt2500usb_regbusy_read(struct rt2x00_dev *rt2x00dev,
 123                                   const unsigned int offset,
 124                                   struct rt2x00_field16 field,
 125                                   u16 *reg)
 126 {
 127         unsigned int i;
 128
 129         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 130                 rt2500usb_register_read_lock(rt2x00dev, offset, reg);
 131                 if (!rt2x00_get_field16(*reg, field))
 132                         return 1;
 133                 udelay(REGISTER_BUSY_DELAY);
 134         }
 135
 136         ERROR(rt2x00dev, "Indirect register access failed: "
 137               "offset=0x%.08x, value=0x%.08x\n", offset, *reg);
 138         *reg = ~0;
 139
 140         return 0;
 141 }
 142
 143 #define WAIT_FOR_BBP(__dev, __reg) \
 144         rt2500usb_regbusy_read((__dev), PHY_CSR8, PHY_CSR8_BUSY, (__reg))
 145 #define WAIT_FOR_RF(__dev, __reg) \
 146         rt2500usb_regbusy_read((__dev), PHY_CSR10, PHY_CSR10_RF_BUSY, (__reg))
 147
 148 static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
 149                                 const unsigned int word, const u8 value)
 150 {
 151         u16 reg;
 152
 153         mutex_lock(&rt2x00dev->csr_mutex);
 154
 155         /*
 156          * Wait until the BBP becomes available, afterwards we
 157          * can safely write the new data into the register.
 158          */
 159         if (WAIT_FOR_BBP(rt2x00dev, &reg)) {
 160                 reg = 0;
 161                 rt2x00_set_field16(&reg, PHY_CSR7_DATA, value);
 162                 rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 163                 rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 0);
 164
 165                 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
 166         }
 167
 168         mutex_unlock(&rt2x00dev->csr_mutex);
 169 }
 170
 171 static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
 172                                const unsigned int word, u8 *value)
 173 {
 174         u16 reg;
 175
 176         mutex_lock(&rt2x00dev->csr_mutex);
 177
 178         /*
 179          * Wait until the BBP becomes available, afterwards we
 180          * can safely write the read request into the register.
 181          * After the data has been written, we wait until hardware
 182          * returns the correct value, if at any time the register
 183          * doesn't become available in time, reg will be 0xffffffff
 184          * which means we return 0xff to the caller.
 185          */
 186         if (WAIT_FOR_BBP(rt2x00dev, &reg)) {
 187                 reg = 0;
 188                 rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 189                 rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 1);
 190
 191                 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
 192
 193                 if (WAIT_FOR_BBP(rt2x00dev, &reg))
 194                         rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7, &reg);
 195         }
 196
 197         *value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
 198
 199         mutex_unlock(&rt2x00dev->csr_mutex);
 200 }
 201
 202 static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev,
 203                                const unsigned int word, const u32 value)
 204 {
 205         u16 reg;
 206
 207         if (!word)
 208                 return;
 209
 210         mutex_lock(&rt2x00dev->csr_mutex);
 211
 212         /*
 213          * Wait until the RF becomes available, afterwards we
 214          * can safely write the new data into the register.
 215          */
 216         if (WAIT_FOR_RF(rt2x00dev, &reg)) {
 217                 reg = 0;
 218                 rt2x00_set_field16(&reg, PHY_CSR9_RF_VALUE, value);
 219                 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR9, reg);
 220
 221                 reg = 0;
 222                 rt2x00_set_field16(&reg, PHY_CSR10_RF_VALUE, value >> 16);
 223                 rt2x00_set_field16(&reg, PHY_CSR10_RF_NUMBER_OF_BITS, 20);
 224                 rt2x00_set_field16(&reg, PHY_CSR10_RF_IF_SELECT, 0);
 225                 rt2x00_set_field16(&reg, PHY_CSR10_RF_BUSY, 1);
 226
 227                 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR10, reg);
 228                 rt2x00_rf_write(rt2x00dev, word, value);
 229         }
 230
 231         mutex_unlock(&rt2x00dev->csr_mutex);
 232 }
 233
 234 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 235 static void _rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
 236                                      const unsigned int offset,
 237                                      u32 *value)
 238 {
 239         rt2500usb_register_read(rt2x00dev, offset, (u16 *)value);
 240 }
 241
 242 static void _rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
 243                                       const unsigned int offset,
 244                                       u32 value)
 245 {
 246         rt2500usb_register_write(rt2x00dev, offset, value);
 247 }
 248
 249 static const struct rt2x00debug rt2500usb_rt2x00debug = {
 250         .owner  = THIS_MODULE,
 251         .csr    = {
 252                 .read           = _rt2500usb_register_read,
 253                 .write          = _rt2500usb_register_write,
 254                 .flags          = RT2X00DEBUGFS_OFFSET,
 255                 .word_base      = CSR_REG_BASE,
 256                 .word_size      = sizeof(u16),
 257                 .word_count     = CSR_REG_SIZE / sizeof(u16),
 258         },
 259         .eeprom = {
 260                 .read           = rt2x00_eeprom_read,
 261                 .write          = rt2x00_eeprom_write,
 262                 .word_base      = EEPROM_BASE,
 263                 .word_size      = sizeof(u16),
 264                 .word_count     = EEPROM_SIZE / sizeof(u16),
 265         },
 266         .bbp    = {
 267                 .read           = rt2500usb_bbp_read,
 268                 .write          = rt2500usb_bbp_write,
 269                 .word_base      = BBP_BASE,
 270                 .word_size      = sizeof(u8),
 271                 .word_count     = BBP_SIZE / sizeof(u8),
 272         },
 273         .rf     = {
 274                 .read           = rt2x00_rf_read,
 275                 .write          = rt2500usb_rf_write,
 276                 .word_base      = RF_BASE,
 277                 .word_size      = sizeof(u32),
 278                 .word_count     = RF_SIZE / sizeof(u32),
 279         },
 280 };
 281 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 282
 283 #ifdef CONFIG_RT2X00_LIB_RFKILL
 284 static int rt2500usb_rfkill_poll(struct rt2x00_dev *rt2x00dev)
 285 {
 286         u16 reg;
 287
 288         rt2500usb_register_read(rt2x00dev, MAC_CSR19, &reg);
 289         return rt2x00_get_field32(reg, MAC_CSR19_BIT7);
 290 }
 291 #else
 292 #define rt2500usb_rfkill_poll   NULL
 293 #endif /* CONFIG_RT2X00_LIB_RFKILL */
 294
 295 #ifdef CONFIG_RT2X00_LIB_LEDS
 296 static void rt2500usb_brightness_set(struct led_classdev *led_cdev,
 297                                      enum led_brightness brightness)
 298 {
 299         struct rt2x00_led *led =
 300             container_of(led_cdev, struct rt2x00_led, led_dev);
 301         unsigned int enabled = brightness != LED_OFF;
 302         u16 reg;
 303
 304         rt2500usb_register_read(led->rt2x00dev, MAC_CSR20, &reg);
 305
 306         if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC)
 307                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, enabled);
 308         else if (led->type == LED_TYPE_ACTIVITY)
 309                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, enabled);
 310
 311         rt2500usb_register_write(led->rt2x00dev, MAC_CSR20, reg);
 312 }
 313
 314 static int rt2500usb_blink_set(struct led_classdev *led_cdev,
 315                                unsigned long *delay_on,
 316                                unsigned long *delay_off)
 317 {
 318         struct rt2x00_led *led =
 319             container_of(led_cdev, struct rt2x00_led, led_dev);
 320         u16 reg;
 321
 322         rt2500usb_register_read(led->rt2x00dev, MAC_CSR21, &reg);
 323         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, *delay_on);
 324         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, *delay_off);
 325         rt2500usb_register_write(led->rt2x00dev, MAC_CSR21, reg);
 326
 327         return 0;
 328 }
 329
 330 static void rt2500usb_init_led(struct rt2x00_dev *rt2x00dev,
 331                                struct rt2x00_led *led,
 332                                enum led_type type)
 333 {
 334         led->rt2x00dev = rt2x00dev;
 335         led->type = type;
 336         led->led_dev.brightness_set = rt2500usb_brightness_set;
 337         led->led_dev.blink_set = rt2500usb_blink_set;
 338         led->flags = LED_INITIALIZED;
 339 }
 340 #endif /* CONFIG_RT2X00_LIB_LEDS */
 341
 342 /*
 343  * Configuration handlers.
 344  */
 345
 346 /*
 347  * rt2500usb does not differentiate between shared and pairwise
 348  * keys, so we should use the same function for both key types.
 349  */
 350 static int rt2500usb_config_key(struct rt2x00_dev *rt2x00dev,
 351                                 struct rt2x00lib_crypto *crypto,
 352                                 struct ieee80211_key_conf *key)
 353 {
 354         int timeout;
 355         u32 mask;
 356         u16 reg;
 357
 358         if (crypto->cmd == SET_KEY) {
 359                 /*
 360                  * Pairwise key will always be entry 0, but this
 361                  * could collide with a shared key on the same
 362                  * position...
 363                  */
 364                 mask = TXRX_CSR0_KEY_ID.bit_mask;
 365
 366                 rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 367                 reg &= mask;
 368
 369                 if (reg && reg == mask)
 370                         return -ENOSPC;
 371
 372                 reg = rt2x00_get_field16(reg, TXRX_CSR0_KEY_ID);
 373
 374                 key->hw_key_idx += reg ? ffz(reg) : 0;
 375
 376                 /*
 377                  * The encryption key doesn't fit within the CSR cache,
 378                  * this means we should allocate it seperately and use
 379                  * rt2x00usb_vendor_request() to send the key to the hardware.
 380                  */
 381                 reg = KEY_ENTRY(key->hw_key_idx);
 382                 timeout = REGISTER_TIMEOUT32(sizeof(crypto->key));
 383                 rt2x00usb_vendor_request_large_buff(rt2x00dev, USB_MULTI_WRITE,
 384                                                     USB_VENDOR_REQUEST_OUT, reg,
 385                                                     crypto->key,
 386                                                     sizeof(crypto->key),
 387                                                     timeout);
 388
 389                 /*
 390                  * The driver does not support the IV/EIV generation
 391                  * in hardware. However it demands the data to be provided
 392                  * both seperately as well as inside the frame.
 393                  * We already provided the CONFIG_CRYPTO_COPY_IV to rt2x00lib
 394                  * to ensure rt2x00lib will not strip the data from the
 395                  * frame after the copy, now we must tell mac80211
 396                  * to generate the IV/EIV data.
 397                  */
 398                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 399                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
 400         }
 401
 402         /*
 403          * TXRX_CSR0_KEY_ID contains only single-bit fields to indicate
 404          * a particular key is valid.
 405          */
 406         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 407         rt2x00_set_field16(&reg, TXRX_CSR0_ALGORITHM, crypto->cipher);
 408         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 409
 410         mask = rt2x00_get_field16(reg, TXRX_CSR0_KEY_ID);
 411         if (crypto->cmd == SET_KEY)
 412                 mask |= 1 << key->hw_key_idx;
 413         else if (crypto->cmd == DISABLE_KEY)
 414                 mask &= ~(1 << key->hw_key_idx);
 415         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, mask);
 416         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 417
 418         return 0;
 419 }
 420
 421 static void rt2500usb_config_filter(struct rt2x00_dev *rt2x00dev,
 422                                     const unsigned int filter_flags)
 423 {
 424         u16 reg;
 425
 426         /*
 427          * Start configuration steps.
 428          * Note that the version error will always be dropped
 429          * and broadcast frames will always be accepted since
 430          * there is no filter for it at this time.
 431          */
 432         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 433         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
 434                            !(filter_flags & FIF_FCSFAIL));
 435         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
 436                            !(filter_flags & FIF_PLCPFAIL));
 437         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
 438                            !(filter_flags & FIF_CONTROL));
 439         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
 440                            !(filter_flags & FIF_PROMISC_IN_BSS));
 441         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
 442                            !(filter_flags & FIF_PROMISC_IN_BSS) &&
 443                            !rt2x00dev->intf_ap_count);
 444         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
 445         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
 446                            !(filter_flags & FIF_ALLMULTI));
 447         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
 448         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 449 }
 450
 451 static void rt2500usb_config_intf(struct rt2x00_dev *rt2x00dev,
 452                                   struct rt2x00_intf *intf,
 453                                   struct rt2x00intf_conf *conf,
 454                                   const unsigned int flags)
 455 {
 456         unsigned int bcn_preload;
 457         u16 reg;
 458
 459         if (flags & CONFIG_UPDATE_TYPE) {
 460                 /*
 461                  * Enable beacon config
 462                  */
 463                 bcn_preload = PREAMBLE + GET_DURATION(IEEE80211_HEADER, 20);
 464                 rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
 465                 rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET, bcn_preload >> 6);
 466                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW,
 467                                    2 * (conf->type != NL80211_IFTYPE_STATION));
 468                 rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
 469
 470                 /*
 471                  * Enable synchronisation.
 472                  */
 473                 rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 474                 rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
 475                 rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 476
 477                 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 478                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
 479                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, conf->sync);
 480                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
 481                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 482         }
 483
 484         if (flags & CONFIG_UPDATE_MAC)
 485                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, conf->mac,
 486                                               (3 * sizeof(__le16)));
 487
 488         if (flags & CONFIG_UPDATE_BSSID)
 489                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, conf->bssid,
 490                                               (3 * sizeof(__le16)));
 491 }
 492
 493 static void rt2500usb_config_erp(struct rt2x00_dev *rt2x00dev,
 494                                  struct rt2x00lib_erp *erp)
 495 {
 496         u16 reg;
 497
 498         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 499         rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, erp->ack_timeout);
 500         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 501
 502         rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
 503         rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
 504                            !!erp->short_preamble);
 505         rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
 506
 507         rt2500usb_register_write(rt2x00dev, TXRX_CSR11, erp->basic_rates);
 508
 509         rt2500usb_register_write(rt2x00dev, MAC_CSR10, erp->slot_time);
 510         rt2500usb_register_write(rt2x00dev, MAC_CSR11, erp->sifs);
 511         rt2500usb_register_write(rt2x00dev, MAC_CSR12, erp->eifs);
 512 }
 513
 514 static void rt2500usb_config_ant(struct rt2x00_dev *rt2x00dev,
 515                                  struct antenna_setup *ant)
 516 {
 517         u8 r2;
 518         u8 r14;
 519         u16 csr5;
 520         u16 csr6;
 521
 522         /*
 523          * We should never come here because rt2x00lib is supposed
 524          * to catch this and send us the correct antenna explicitely.
 525          */
 526         BUG_ON(ant->rx == ANTENNA_SW_DIVERSITY ||
 527                ant->tx == ANTENNA_SW_DIVERSITY);
 528
 529         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
 530         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
 531         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
 532         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
 533
 534         /*
 535          * Configure the TX antenna.
 536          */
 537         switch (ant->tx) {
 538         case ANTENNA_HW_DIVERSITY:
 539                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
 540                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
 541                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
 542                 break;
 543         case ANTENNA_A:
 544                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
 545                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
 546                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
 547                 break;
 548         case ANTENNA_B:
 549         default:
 550                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
 551                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
 552                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
 553                 break;
 554         }
 555
 556         /*
 557          * Configure the RX antenna.
 558          */
 559         switch (ant->rx) {
 560         case ANTENNA_HW_DIVERSITY:
 561                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
 562                 break;
 563         case ANTENNA_A:
 564                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
 565                 break;
 566         case ANTENNA_B:
 567         default:
 568                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
 569                 break;
 570         }
 571
 572         /*
 573          * RT2525E and RT5222 need to flip TX I/Q
 574          */
 575         if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
 576             rt2x00_rf(&rt2x00dev->chip, RF5222)) {
 577                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
 578                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
 579                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
 580
 581                 /*
 582                  * RT2525E does not need RX I/Q Flip.
 583                  */
 584                 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
 585                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
 586         } else {
 587                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
 588                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
 589         }
 590
 591         rt2500usb_bbp_write(rt2x00dev, 2, r2);
 592         rt2500usb_bbp_write(rt2x00dev, 14, r14);
 593         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
 594         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
 595 }
 596
 597 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
 598                                      struct rf_channel *rf, const int txpower)
 599 {
 600         /*
 601          * Set TXpower.
 602          */
 603         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 604
 605         /*
 606          * For RT2525E we should first set the channel to half band higher.
 607          */
 608         if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
 609                 static const u32 vals[] = {
 610                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
 611                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
 612                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
 613                         0x00000902, 0x00000906
 614                 };
 615
 616                 rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
 617                 if (rf->rf4)
 618                         rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
 619         }
 620
 621         rt2500usb_rf_write(rt2x00dev, 1, rf->rf1);
 622         rt2500usb_rf_write(rt2x00dev, 2, rf->rf2);
 623         rt2500usb_rf_write(rt2x00dev, 3, rf->rf3);
 624         if (rf->rf4)
 625                 rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
 626 }
 627
 628 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
 629                                      const int txpower)
 630 {
 631         u32 rf3;
 632
 633         rt2x00_rf_read(rt2x00dev, 3, &rf3);
 634         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 635         rt2500usb_rf_write(rt2x00dev, 3, rf3);
 636 }
 637
 638 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
 639                                       struct rt2x00lib_conf *libconf)
 640 {
 641         u16 reg;
 642
 643         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 644         rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL,
 645                            libconf->conf->beacon_int * 4);
 646         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 647 }
 648
 649 static void rt2500usb_config_ps(struct rt2x00_dev *rt2x00dev,
 650                                 struct rt2x00lib_conf *libconf)
 651 {
 652         enum dev_state state =
 653             (libconf->conf->flags & IEEE80211_CONF_PS) ?
 654                 STATE_SLEEP : STATE_AWAKE;
 655         u16 reg;
 656
 657         if (state == STATE_SLEEP) {
 658                 rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 659                 rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON,
 660                                    libconf->conf->beacon_int - 20);
 661                 rt2x00_set_field16(&reg, MAC_CSR18_BEACONS_BEFORE_WAKEUP,
 662                                    libconf->conf->listen_interval - 1);
 663
 664                 /* We must first disable autowake before it can be enabled */
 665                 rt2x00_set_field16(&reg, MAC_CSR18_AUTO_WAKE, 0);
 666                 rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 667
 668                 rt2x00_set_field16(&reg, MAC_CSR18_AUTO_WAKE, 1);
 669                 rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 670         }
 671
 672         rt2x00dev->ops->lib->set_device_state(rt2x00dev, state);
 673 }
 674
 675 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
 676                              struct rt2x00lib_conf *libconf,
 677                              const unsigned int flags)
 678 {
 679         if (flags & IEEE80211_CONF_CHANGE_CHANNEL)
 680                 rt2500usb_config_channel(rt2x00dev, &libconf->rf,
 681                                          libconf->conf->power_level);
 682         if ((flags & IEEE80211_CONF_CHANGE_POWER) &&
 683             !(flags & IEEE80211_CONF_CHANGE_CHANNEL))
 684                 rt2500usb_config_txpower(rt2x00dev,
 685                                          libconf->conf->power_level);
 686         if (flags & IEEE80211_CONF_CHANGE_BEACON_INTERVAL)
 687                 rt2500usb_config_duration(rt2x00dev, libconf);
 688         if (flags & IEEE80211_CONF_CHANGE_PS)
 689                 rt2500usb_config_ps(rt2x00dev, libconf);
 690 }
 691
 692 /*
 693  * Link tuning
 694  */
 695 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
 696                                  struct link_qual *qual)
 697 {
 698         u16 reg;
 699
 700         /*
 701          * Update FCS error count from register.
 702          */
 703         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
 704         qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
 705
 706         /*
 707          * Update False CCA count from register.
 708          */
 709         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
 710         qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
 711 }
 712
 713 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev,
 714                                   struct link_qual *qual)
 715 {
 716         u16 eeprom;
 717         u16 value;
 718
 719         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
 720         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
 721         rt2500usb_bbp_write(rt2x00dev, 24, value);
 722
 723         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
 724         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
 725         rt2500usb_bbp_write(rt2x00dev, 25, value);
 726
 727         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
 728         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
 729         rt2500usb_bbp_write(rt2x00dev, 61, value);
 730
 731         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
 732         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
 733         rt2500usb_bbp_write(rt2x00dev, 17, value);
 734
 735         qual->vgc_level = value;
 736 }
 737
 738 /*
 739  * NOTE: This function is directly ported from legacy driver, but
 740  * despite it being declared it was never called. Although link tuning
 741  * sounds like a good idea, and usually works well for the other drivers,
 742  * it does _not_ work with rt2500usb. Enabling this function will result
 743  * in TX capabilities only until association kicks in. Immediately
 744  * after the successful association all TX frames will be kept in the
 745  * hardware queue and never transmitted.
 746  */
 747 #if 0
 748 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
 749 {
 750         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
 751         u16 bbp_thresh;
 752         u16 vgc_bound;
 753         u16 sens;
 754         u16 r24;
 755         u16 r25;
 756         u16 r61;
 757         u16 r17_sens;
 758         u8 r17;
 759         u8 up_bound;
 760         u8 low_bound;
 761
 762         /*
 763          * Read current r17 value, as well as the sensitivity values
 764          * for the r17 register.
 765          */
 766         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
 767         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
 768
 769         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
 770         up_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
 771         low_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCLOWER);
 772
 773         /*
 774          * If we are not associated, we should go straight to the
 775          * dynamic CCA tuning.
 776          */
 777         if (!rt2x00dev->intf_associated)
 778                 goto dynamic_cca_tune;
 779
 780         /*
 781          * Determine the BBP tuning threshold and correctly
 782          * set BBP 24, 25 and 61.
 783          */
 784         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
 785         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
 786
 787         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
 788         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
 789         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
 790
 791         if ((rssi + bbp_thresh) > 0) {
 792                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
 793                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
 794                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
 795         } else {
 796                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
 797                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
 798                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
 799         }
 800
 801         rt2500usb_bbp_write(rt2x00dev, 24, r24);
 802         rt2500usb_bbp_write(rt2x00dev, 25, r25);
 803         rt2500usb_bbp_write(rt2x00dev, 61, r61);
 804
 805         /*
 806          * A too low RSSI will cause too much false CCA which will
 807          * then corrupt the R17 tuning. To remidy this the tuning should
 808          * be stopped (While making sure the R17 value will not exceed limits)
 809          */
 810         if (rssi >= -40) {
 811                 if (r17 != 0x60)
 812                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
 813                 return;
 814         }
 815
 816         /*
 817          * Special big-R17 for short distance
 818          */
 819         if (rssi >= -58) {
 820                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
 821                 if (r17 != sens)
 822                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 823                 return;
 824         }
 825
 826         /*
 827          * Special mid-R17 for middle distance
 828          */
 829         if (rssi >= -74) {
 830                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
 831                 if (r17 != sens)
 832                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 833                 return;
 834         }
 835
 836         /*
 837          * Leave short or middle distance condition, restore r17
 838          * to the dynamic tuning range.
 839          */
 840         low_bound = 0x32;
 841         if (rssi < -77)
 842                 up_bound -= (-77 - rssi);
 843
 844         if (up_bound < low_bound)
 845                 up_bound = low_bound;
 846
 847         if (r17 > up_bound) {
 848                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
 849                 rt2x00dev->link.vgc_level = up_bound;
 850                 return;
 851         }
 852
 853 dynamic_cca_tune:
 854
 855         /*
 856          * R17 is inside the dynamic tuning range,
 857          * start tuning the link based on the false cca counter.
 858          */
 859         if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
 860                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
 861                 rt2x00dev->link.vgc_level = r17;
 862         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
 863                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
 864                 rt2x00dev->link.vgc_level = r17;
 865         }
 866 }
 867 #else
 868 #define rt2500usb_link_tuner    NULL
 869 #endif
 870
 871 /*
 872  * Initialization functions.
 873  */
 874 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
 875 {
 876         u16 reg;
 877
 878         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
 879                                     USB_MODE_TEST, REGISTER_TIMEOUT);
 880         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
 881                                     0x00f0, REGISTER_TIMEOUT);
 882
 883         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 884         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 885         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 886
 887         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
 888         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
 889
 890         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 891         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
 892         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
 893         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 894         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 895
 896         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 897         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 898         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 899         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 900         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 901
 902         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
 903         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
 904         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
 905         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
 906         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
 907         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
 908
 909         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
 910         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
 911         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
 912         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
 913         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
 914         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
 915
 916         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 917         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
 918         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
 919         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
 920         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
 921         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 922
 923         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 924         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
 925         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
 926         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
 927         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
 928         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 929
 930         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 931         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
 932         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, 0);
 933         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
 934         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
 935         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 936
 937         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
 938         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
 939
 940         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 941                 return -EBUSY;
 942
 943         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 944         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 945         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 946         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
 947         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 948
 949         if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
 950                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
 951                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 0);
 952         } else {
 953                 reg = 0;
 954                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 1);
 955                 rt2x00_set_field16(&reg, PHY_CSR2_LNA_MODE, 3);
 956         }
 957         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
 958
 959         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
 960         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
 961         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
 962         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
 963
 964         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 965         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
 966                            rt2x00dev->rx->data_size);
 967         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
 968
 969         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 970         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 971         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0);
 972         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 973
 974         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 975         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
 976         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 977
 978         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
 979         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
 980         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
 981
 982         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 983         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
 984         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 985
 986         return 0;
 987 }
 988
 989 static int rt2500usb_wait_bbp_ready(struct rt2x00_dev *rt2x00dev)
 990 {
 991         unsigned int i;
 992         u8 value;
 993
 994         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 995                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
 996                 if ((value != 0xff) && (value != 0x00))
 997                         return 0;
 998                 udelay(REGISTER_BUSY_DELAY);
 999         }
1000
1001         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
1002         return -EACCES;
1003 }
1004
1005 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
1006 {
1007         unsigned int i;
1008         u16 eeprom;
1009         u8 value;
1010         u8 reg_id;
1011
1012         if (unlikely(rt2500usb_wait_bbp_ready(rt2x00dev)))
1013                 return -EACCES;
1014
1015         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
1016         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
1017         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
1018         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
1019         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
1020         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
1021         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
1022         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
1023         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
1024         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
1025         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
1026         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
1027         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
1028         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
1029         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
1030         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
1031         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
1032         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
1033         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
1034         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
1035         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
1036         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
1037         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
1038         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
1039         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
1040         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
1041         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
1042         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
1043         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
1044         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
1045         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
1046
1047         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
1048                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
1049
1050                 if (eeprom != 0xffff && eeprom != 0x0000) {
1051                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
1052                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
1053                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
1054                 }
1055         }
1056
1057         return 0;
1058 }
1059
1060 /*
1061  * Device state switch handlers.
1062  */
1063 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
1064                                 enum dev_state state)
1065 {
1066         u16 reg;
1067
1068         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
1069         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
1070                            (state == STATE_RADIO_RX_OFF) ||
1071                            (state == STATE_RADIO_RX_OFF_LINK));
1072         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
1073 }
1074
1075 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
1076 {
1077         /*
1078          * Initialize all registers.
1079          */
1080         if (unlikely(rt2500usb_init_registers(rt2x00dev) ||
1081                      rt2500usb_init_bbp(rt2x00dev)))
1082                 return -EIO;
1083
1084         return 0;
1085 }
1086
1087 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
1088 {
1089         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
1090         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
1091
1092         /*
1093          * Disable synchronisation.
1094          */
1095         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1096
1097         rt2x00usb_disable_radio(rt2x00dev);
1098 }
1099
1100 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
1101                                enum dev_state state)
1102 {
1103         u16 reg;
1104         u16 reg2;
1105         unsigned int i;
1106         char put_to_sleep;
1107         char bbp_state;
1108         char rf_state;
1109
1110         put_to_sleep = (state != STATE_AWAKE);
1111
1112         reg = 0;
1113         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
1114         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
1115         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
1116         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1117         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
1118         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1119
1120         /*
1121          * Device is not guaranteed to be in the requested state yet.
1122          * We must wait until the register indicates that the
1123          * device has entered the correct state.
1124          */
1125         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
1126                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
1127                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
1128                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
1129                 if (bbp_state == state && rf_state == state)
1130                         return 0;
1131                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1132                 msleep(30);
1133         }
1134
1135         return -EBUSY;
1136 }
1137
1138 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
1139                                       enum dev_state state)
1140 {
1141         int retval = 0;
1142
1143         switch (state) {
1144         case STATE_RADIO_ON:
1145                 retval = rt2500usb_enable_radio(rt2x00dev);
1146                 break;
1147         case STATE_RADIO_OFF:
1148                 rt2500usb_disable_radio(rt2x00dev);
1149                 break;
1150         case STATE_RADIO_RX_ON:
1151         case STATE_RADIO_RX_ON_LINK:
1152         case STATE_RADIO_RX_OFF:
1153         case STATE_RADIO_RX_OFF_LINK:
1154                 rt2500usb_toggle_rx(rt2x00dev, state);
1155                 break;
1156         case STATE_RADIO_IRQ_ON:
1157         case STATE_RADIO_IRQ_OFF:
1158                 /* No support, but no error either */
1159                 break;
1160         case STATE_DEEP_SLEEP:
1161         case STATE_SLEEP:
1162         case STATE_STANDBY:
1163         case STATE_AWAKE:
1164                 retval = rt2500usb_set_state(rt2x00dev, state);
1165                 break;
1166         default:
1167                 retval = -ENOTSUPP;
1168                 break;
1169         }
1170
1171         if (unlikely(retval))
1172                 ERROR(rt2x00dev, "Device failed to enter state %d (%d).\n",
1173                       state, retval);
1174
1175         return retval;
1176 }
1177
1178 /*
1179  * TX descriptor initialization
1180  */
1181 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1182                                     struct sk_buff *skb,
1183                                     struct txentry_desc *txdesc)
1184 {
1185         struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
1186         __le32 *txd = skbdesc->desc;
1187         u32 word;
1188
1189         /*
1190          * Start writing the descriptor words.
1191          */
1192         rt2x00_desc_read(txd, 1, &word);
1193         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, txdesc->iv_offset);
1194         rt2x00_set_field32(&word, TXD_W1_AIFS, txdesc->aifs);
1195         rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
1196         rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
1197         rt2x00_desc_write(txd, 1, word);
1198
1199         rt2x00_desc_read(txd, 2, &word);
1200         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
1201         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
1202         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
1203         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
1204         rt2x00_desc_write(txd, 2, word);
1205
1206         if (test_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags)) {
1207                 _rt2x00_desc_write(txd, 3, skbdesc->iv[0]);
1208                 _rt2x00_desc_write(txd, 4, skbdesc->iv[1]);
1209         }
1210
1211         rt2x00_desc_read(txd, 0, &word);
1212         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, txdesc->retry_limit);
1213         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1214                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1215         rt2x00_set_field32(&word, TXD_W0_ACK,
1216                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1217         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1218                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1219         rt2x00_set_field32(&word, TXD_W0_OFDM,
1220                            (txdesc->rate_mode == RATE_MODE_OFDM));
1221         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1222                            test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags));
1223         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
1224         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skb->len);
1225         rt2x00_set_field32(&word, TXD_W0_CIPHER, !!txdesc->cipher);
1226         rt2x00_set_field32(&word, TXD_W0_KEY_ID, txdesc->key_idx);
1227         rt2x00_desc_write(txd, 0, word);
1228 }
1229
1230 /*
1231  * TX data initialization
1232  */
1233 static void rt2500usb_beacondone(struct urb *urb);
1234
1235 static void rt2500usb_write_beacon(struct queue_entry *entry)
1236 {
1237         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
1238         struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev);
1239         struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
1240         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1241         int pipe = usb_sndbulkpipe(usb_dev, entry->queue->usb_endpoint);
1242         int length;
1243         u16 reg;
1244
1245         /*
1246          * Add the descriptor in front of the skb.
1247          */
1248         skb_push(entry->skb, entry->queue->desc_size);
1249         memcpy(entry->skb->data, skbdesc->desc, skbdesc->desc_len);
1250         skbdesc->desc = entry->skb->data;
1251
1252         /*
1253          * Disable beaconing while we are reloading the beacon data,
1254          * otherwise we might be sending out invalid data.
1255          */
1256         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1257         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
1258         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
1259         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
1260         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1261
1262         /*
1263          * USB devices cannot blindly pass the skb->len as the
1264          * length of the data to usb_fill_bulk_urb. Pass the skb
1265          * to the driver to determine what the length should be.
1266          */
1267         length = rt2x00dev->ops->lib->get_tx_data_len(entry);
1268
1269         usb_fill_bulk_urb(bcn_priv->urb, usb_dev, pipe,
1270                           entry->skb->data, length, rt2500usb_beacondone,
1271                           entry);
1272
1273         /*
1274          * Second we need to create the guardian byte.
1275          * We only need a single byte, so lets recycle
1276          * the 'flags' field we are not using for beacons.
1277          */
1278         bcn_priv->guardian_data = 0;
1279         usb_fill_bulk_urb(bcn_priv->guardian_urb, usb_dev, pipe,
1280                           &bcn_priv->guardian_data, 1, rt2500usb_beacondone,
1281                           entry);
1282
1283         /*
1284          * Send out the guardian byte.
1285          */
1286         usb_submit_urb(bcn_priv->guardian_urb, GFP_ATOMIC);
1287 }
1288
1289 static int rt2500usb_get_tx_data_len(struct queue_entry *entry)
1290 {
1291         int length;
1292
1293         /*
1294          * The length _must_ be a multiple of 2,
1295          * but it must _not_ be a multiple of the USB packet size.
1296          */
1297         length = roundup(entry->skb->len, 2);
1298         length += (2 * !(length % entry->queue->usb_maxpacket));
1299
1300         return length;
1301 }
1302
1303 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1304                                     const enum data_queue_qid queue)
1305 {
1306         u16 reg;
1307
1308         if (queue != QID_BEACON) {
1309                 rt2x00usb_kick_tx_queue(rt2x00dev, queue);
1310                 return;
1311         }
1312
1313         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1314         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1315                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
1316                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
1317                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1318                 /*
1319                  * Beacon generation will fail initially.
1320                  * To prevent this we need to register the TXRX_CSR19
1321                  * register several times.
1322                  */
1323                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1324                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1325                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1326                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1327                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1328         }
1329 }
1330
1331 /*
1332  * RX control handlers
1333  */
1334 static void rt2500usb_fill_rxdone(struct queue_entry *entry,
1335                                   struct rxdone_entry_desc *rxdesc)
1336 {
1337         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
1338         struct queue_entry_priv_usb *entry_priv = entry->priv_data;
1339         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1340         __le32 *rxd =
1341             (__le32 *)(entry->skb->data +
1342                        (entry_priv->urb->actual_length -
1343                         entry->queue->desc_size));
1344         u32 word0;
1345         u32 word1;
1346
1347         /*
1348          * Copy descriptor to the skbdesc->desc buffer, making it safe from moving of
1349          * frame data in rt2x00usb.
1350          */
1351         memcpy(skbdesc->desc, rxd, skbdesc->desc_len);
1352         rxd = (__le32 *)skbdesc->desc;
1353
1354         /*
1355          * It is now safe to read the descriptor on all architectures.
1356          */
1357         rt2x00_desc_read(rxd, 0, &word0);
1358         rt2x00_desc_read(rxd, 1, &word1);
1359
1360         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1361                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1362         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1363                 rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1364
1365         if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) {
1366                 rxdesc->cipher = rt2x00_get_field32(word0, RXD_W0_CIPHER);
1367                 if (rt2x00_get_field32(word0, RXD_W0_CIPHER_ERROR))
1368                         rxdesc->cipher_status = RX_CRYPTO_FAIL_KEY;
1369         }
1370
1371         if (rxdesc->cipher != CIPHER_NONE) {
1372                 _rt2x00_desc_read(rxd, 2, &rxdesc->iv[0]);
1373                 _rt2x00_desc_read(rxd, 3, &rxdesc->iv[1]);
1374                 rxdesc->dev_flags |= RXDONE_CRYPTO_IV;
1375
1376                 /* ICV is located at the end of frame */
1377
1378                 rxdesc->flags |= RX_FLAG_MMIC_STRIPPED;
1379                 if (rxdesc->cipher_status == RX_CRYPTO_SUCCESS)
1380                         rxdesc->flags |= RX_FLAG_DECRYPTED;
1381                 else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC)
1382                         rxdesc->flags |= RX_FLAG_MMIC_ERROR;
1383         }
1384
1385         /*
1386          * Obtain the status about this packet.
1387          * When frame was received with an OFDM bitrate,
1388          * the signal is the PLCP value. If it was received with
1389          * a CCK bitrate the signal is the rate in 100kbit/s.
1390          */
1391         rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1392         rxdesc->rssi =
1393             rt2x00_get_field32(word1, RXD_W1_RSSI) - rt2x00dev->rssi_offset;
1394         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1395
1396         if (rt2x00_get_field32(word0, RXD_W0_OFDM))
1397                 rxdesc->dev_flags |= RXDONE_SIGNAL_PLCP;
1398         else
1399                 rxdesc->dev_flags |= RXDONE_SIGNAL_BITRATE;
1400         if (rt2x00_get_field32(word0, RXD_W0_MY_BSS))
1401                 rxdesc->dev_flags |= RXDONE_MY_BSS;
1402
1403         /*
1404          * Adjust the skb memory window to the frame boundaries.
1405          */
1406         skb_trim(entry->skb, rxdesc->size);
1407 }
1408
1409 /*
1410  * Interrupt functions.
1411  */
1412 static void rt2500usb_beacondone(struct urb *urb)
1413 {
1414         struct queue_entry *entry = (struct queue_entry *)urb->context;
1415         struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
1416
1417         if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags))
1418                 return;
1419
1420         /*
1421          * Check if this was the guardian beacon,
1422          * if that was the case we need to send the real beacon now.
1423          * Otherwise we should free the sk_buffer, the device
1424          * should be doing the rest of the work now.
1425          */
1426         if (bcn_priv->guardian_urb == urb) {
1427                 usb_submit_urb(bcn_priv->urb, GFP_ATOMIC);
1428         } else if (bcn_priv->urb == urb) {
1429                 dev_kfree_skb(entry->skb);
1430                 entry->skb = NULL;
1431         }
1432 }
1433
1434 /*
1435  * Device probe functions.
1436  */
1437 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1438 {
1439         u16 word;
1440         u8 *mac;
1441         u8 bbp;
1442
1443         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1444
1445         /*
1446          * Start validation of the data that has been read.
1447          */
1448         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1449         if (!is_valid_ether_addr(mac)) {
1450                 random_ether_addr(mac);
1451                 EEPROM(rt2x00dev, "MAC: %pM\n", mac);
1452         }
1453
1454         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1455         if (word == 0xffff) {
1456                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1457                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1458                                    ANTENNA_SW_DIVERSITY);
1459                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1460                                    ANTENNA_SW_DIVERSITY);
1461                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1462                                    LED_MODE_DEFAULT);
1463                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1464                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1465                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1466                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1467                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1468         }
1469
1470         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1471         if (word == 0xffff) {
1472                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1473                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1474                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1475                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1476                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1477         }
1478
1479         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1480         if (word == 0xffff) {
1481                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1482                                    DEFAULT_RSSI_OFFSET);
1483                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1484                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1485         }
1486
1487         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1488         if (word == 0xffff) {
1489                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1490                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1491                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1492         }
1493
1494         /*
1495          * Switch lower vgc bound to current BBP R17 value,
1496          * lower the value a bit for better quality.
1497          */
1498         rt2500usb_bbp_read(rt2x00dev, 17, &bbp);
1499         bbp -= 6;
1500
1501         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1502         if (word == 0xffff) {
1503                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1504                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1505                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1506                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1507         } else {
1508                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1509                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1510         }
1511
1512         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1513         if (word == 0xffff) {
1514                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1515                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1516                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1517                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1518         }
1519
1520         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1521         if (word == 0xffff) {
1522                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1523                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1524                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1525                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1526         }
1527
1528         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1529         if (word == 0xffff) {
1530                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1531                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1532                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1533                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1534         }
1535
1536         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1537         if (word == 0xffff) {
1538                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1539                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1540                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1541                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1542         }
1543
1544         return 0;
1545 }
1546
1547 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1548 {
1549         u16 reg;
1550         u16 value;
1551         u16 eeprom;
1552
1553         /*
1554          * Read EEPROM word for configuration.
1555          */
1556         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1557
1558         /*
1559          * Identify RF chipset.
1560          */
1561         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1562         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1563         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1564
1565         if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
1566                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1567                 return -ENODEV;
1568         }
1569
1570         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1571             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1572             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1573             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1574             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1575             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1576                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1577                 return -ENODEV;
1578         }
1579
1580         /*
1581          * Identify default antenna configuration.
1582          */
1583         rt2x00dev->default_ant.tx =
1584             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1585         rt2x00dev->default_ant.rx =
1586             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1587
1588         /*
1589          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1590          * I am not 100% sure about this, but the legacy drivers do not
1591          * indicate antenna swapping in software is required when
1592          * diversity is enabled.
1593          */
1594         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1595                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1596         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1597                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1598
1599         /*
1600          * Store led mode, for correct led behaviour.
1601          */
1602 #ifdef CONFIG_RT2X00_LIB_LEDS
1603         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1604
1605         rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO);
1606         if (value == LED_MODE_TXRX_ACTIVITY || value == LED_MODE_DEFAULT)
1607                 rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_qual,
1608                                    LED_TYPE_ACTIVITY);
1609 #endif /* CONFIG_RT2X00_LIB_LEDS */
1610
1611         /*
1612          * Detect if this device has an hardware controlled radio.
1613          */
1614 #ifdef CONFIG_RT2X00_LIB_RFKILL
1615         if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_HARDWARE_RADIO))
1616                 __set_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags);
1617 #endif /* CONFIG_RT2X00_LIB_RFKILL */
1618
1619         /*
1620          * Check if the BBP tuning should be disabled.
1621          */
1622         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1623         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1624                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1625
1626         /*
1627          * Read the RSSI <-> dBm offset information.
1628          */
1629         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1630         rt2x00dev->rssi_offset =
1631             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1632
1633         return 0;
1634 }
1635
1636 /*
1637  * RF value list for RF2522
1638  * Supports: 2.4 GHz
1639  */
1640 static const struct rf_channel rf_vals_bg_2522[] = {
1641         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1642         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1643         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1644         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1645         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1646         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1647         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1648         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1649         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1650         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1651         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1652         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1653         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1654         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1655 };
1656
1657 /*
1658  * RF value list for RF2523
1659  * Supports: 2.4 GHz
1660  */
1661 static const struct rf_channel rf_vals_bg_2523[] = {
1662         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1663         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1664         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1665         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1666         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1667         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1668         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1669         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1670         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1671         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1672         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1673         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1674         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1675         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1676 };
1677
1678 /*
1679  * RF value list for RF2524
1680  * Supports: 2.4 GHz
1681  */
1682 static const struct rf_channel rf_vals_bg_2524[] = {
1683         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1684         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1685         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1686         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1687         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1688         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1689         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1690         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1691         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1692         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1693         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1694         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1695         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1696         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1697 };
1698
1699 /*
1700  * RF value list for RF2525
1701  * Supports: 2.4 GHz
1702  */
1703 static const struct rf_channel rf_vals_bg_2525[] = {
1704         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1705         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1706         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1707         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1708         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1709         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1710         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1711         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1712         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1713         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1714         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1715         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1716         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1717         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1718 };
1719
1720 /*
1721  * RF value list for RF2525e
1722  * Supports: 2.4 GHz
1723  */
1724 static const struct rf_channel rf_vals_bg_2525e[] = {
1725         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1726         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1727         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1728         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1729         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1730         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1731         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1732         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1733         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1734         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1735         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1736         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1737         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1738         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1739 };
1740
1741 /*
1742  * RF value list for RF5222
1743  * Supports: 2.4 GHz & 5.2 GHz
1744  */
1745 static const struct rf_channel rf_vals_5222[] = {
1746         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1747         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1748         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1749         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1750         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1751         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1752         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1753         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1754         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1755         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1756         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1757         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1758         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1759         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1760
1761         /* 802.11 UNI / HyperLan 2 */
1762         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1763         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1764         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1765         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1766         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1767         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1768         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1769         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1770
1771         /* 802.11 HyperLan 2 */
1772         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1773         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1774         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1775         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1776         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1777         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1778         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1779         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1780         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1781         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1782
1783         /* 802.11 UNII */
1784         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1785         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1786         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1787         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1788         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1789 };
1790
1791 static int rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1792 {
1793         struct hw_mode_spec *spec = &rt2x00dev->spec;
1794         struct channel_info *info;
1795         char *tx_power;
1796         unsigned int i;
1797
1798         /*
1799          * Initialize all hw fields.
1800          */
1801         rt2x00dev->hw->flags =
1802             IEEE80211_HW_RX_INCLUDES_FCS |
1803             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1804             IEEE80211_HW_SIGNAL_DBM |
1805             IEEE80211_HW_SUPPORTS_PS |
1806             IEEE80211_HW_PS_NULLFUNC_STACK;
1807
1808         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1809
1810         SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev);
1811         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1812                                 rt2x00_eeprom_addr(rt2x00dev,
1813                                                    EEPROM_MAC_ADDR_0));
1814
1815         /*
1816          * Initialize hw_mode information.
1817          */
1818         spec->supported_bands = SUPPORT_BAND_2GHZ;
1819         spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM;
1820
1821         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1822                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1823                 spec->channels = rf_vals_bg_2522;
1824         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1825                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1826                 spec->channels = rf_vals_bg_2523;
1827         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1828                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1829                 spec->channels = rf_vals_bg_2524;
1830         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1831                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1832                 spec->channels = rf_vals_bg_2525;
1833         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1834                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1835                 spec->channels = rf_vals_bg_2525e;
1836         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1837                 spec->supported_bands |= SUPPORT_BAND_5GHZ;
1838                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1839                 spec->channels = rf_vals_5222;
1840         }
1841
1842         /*
1843          * Create channel information array
1844          */
1845         info = kzalloc(spec->num_channels * sizeof(*info), GFP_KERNEL);
1846         if (!info)
1847                 return -ENOMEM;
1848
1849         spec->channels_info = info;
1850
1851         tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1852         for (i = 0; i < 14; i++)
1853                 info[i].tx_power1 = TXPOWER_FROM_DEV(tx_power[i]);
1854
1855         if (spec->num_channels > 14) {
1856                 for (i = 14; i < spec->num_channels; i++)
1857                         info[i].tx_power1 = DEFAULT_TXPOWER;
1858         }
1859
1860         return 0;
1861 }
1862
1863 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1864 {
1865         int retval;
1866
1867         /*
1868          * Allocate eeprom data.
1869          */
1870         retval = rt2500usb_validate_eeprom(rt2x00dev);
1871         if (retval)
1872                 return retval;
1873
1874         retval = rt2500usb_init_eeprom(rt2x00dev);
1875         if (retval)
1876                 return retval;
1877
1878         /*
1879          * Initialize hw specifications.
1880          */
1881         retval = rt2500usb_probe_hw_mode(rt2x00dev);
1882         if (retval)
1883                 return retval;
1884
1885         /*
1886          * This device requires the atim queue
1887          */
1888         __set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
1889         __set_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags);
1890         __set_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags);
1891         if (!modparam_nohwcrypt) {
1892                 __set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
1893                 __set_bit(DRIVER_REQUIRE_COPY_IV, &rt2x00dev->flags);
1894         }
1895         __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1896
1897         /*
1898          * Set the rssi offset.
1899          */
1900         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1901
1902         return 0;
1903 }
1904
1905 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1906         .tx                     = rt2x00mac_tx,
1907         .start                  = rt2x00mac_start,
1908         .stop                   = rt2x00mac_stop,
1909         .add_interface          = rt2x00mac_add_interface,
1910         .remove_interface       = rt2x00mac_remove_interface,
1911         .config                 = rt2x00mac_config,
1912         .config_interface       = rt2x00mac_config_interface,
1913         .configure_filter       = rt2x00mac_configure_filter,
1914         .set_key                = rt2x00mac_set_key,
1915         .get_stats              = rt2x00mac_get_stats,
1916         .bss_info_changed       = rt2x00mac_bss_info_changed,
1917         .conf_tx                = rt2x00mac_conf_tx,
1918         .get_tx_stats           = rt2x00mac_get_tx_stats,
1919 };
1920
1921 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1922         .probe_hw               = rt2500usb_probe_hw,
1923         .initialize             = rt2x00usb_initialize,
1924         .uninitialize           = rt2x00usb_uninitialize,
1925         .clear_entry            = rt2x00usb_clear_entry,
1926         .set_device_state       = rt2500usb_set_device_state,
1927         .rfkill_poll            = rt2500usb_rfkill_poll,
1928         .link_stats             = rt2500usb_link_stats,
1929         .reset_tuner            = rt2500usb_reset_tuner,
1930         .link_tuner             = rt2500usb_link_tuner,
1931         .write_tx_desc          = rt2500usb_write_tx_desc,
1932         .write_tx_data          = rt2x00usb_write_tx_data,
1933         .write_beacon           = rt2500usb_write_beacon,
1934         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1935         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1936         .fill_rxdone            = rt2500usb_fill_rxdone,
1937         .config_shared_key      = rt2500usb_config_key,
1938         .config_pairwise_key    = rt2500usb_config_key,
1939         .config_filter          = rt2500usb_config_filter,
1940         .config_intf            = rt2500usb_config_intf,
1941         .config_erp             = rt2500usb_config_erp,
1942         .config_ant             = rt2500usb_config_ant,
1943         .config                 = rt2500usb_config,
1944 };
1945
1946 static const struct data_queue_desc rt2500usb_queue_rx = {
1947         .entry_num              = RX_ENTRIES,
1948         .data_size              = DATA_FRAME_SIZE,
1949         .desc_size              = RXD_DESC_SIZE,
1950         .priv_size              = sizeof(struct queue_entry_priv_usb),
1951 };
1952
1953 static const struct data_queue_desc rt2500usb_queue_tx = {
1954         .entry_num              = TX_ENTRIES,
1955         .data_size              = DATA_FRAME_SIZE,
1956         .desc_size              = TXD_DESC_SIZE,
1957         .priv_size              = sizeof(struct queue_entry_priv_usb),
1958 };
1959
1960 static const struct data_queue_desc rt2500usb_queue_bcn = {
1961         .entry_num              = BEACON_ENTRIES,
1962         .data_size              = MGMT_FRAME_SIZE,
1963         .desc_size              = TXD_DESC_SIZE,
1964         .priv_size              = sizeof(struct queue_entry_priv_usb_bcn),
1965 };
1966
1967 static const struct data_queue_desc rt2500usb_queue_atim = {
1968         .entry_num              = ATIM_ENTRIES,
1969         .data_size              = DATA_FRAME_SIZE,
1970         .desc_size              = TXD_DESC_SIZE,
1971         .priv_size              = sizeof(struct queue_entry_priv_usb),
1972 };
1973
1974 static const struct rt2x00_ops rt2500usb_ops = {
1975         .name           = KBUILD_MODNAME,
1976         .max_sta_intf   = 1,
1977         .max_ap_intf    = 1,
1978         .eeprom_size    = EEPROM_SIZE,
1979         .rf_size        = RF_SIZE,
1980         .tx_queues      = NUM_TX_QUEUES,
1981         .rx             = &rt2500usb_queue_rx,
1982         .tx             = &rt2500usb_queue_tx,
1983         .bcn            = &rt2500usb_queue_bcn,
1984         .atim           = &rt2500usb_queue_atim,
1985         .lib            = &rt2500usb_rt2x00_ops,
1986         .hw             = &rt2500usb_mac80211_ops,
1987 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1988         .debugfs        = &rt2500usb_rt2x00debug,
1989 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1990 };
1991
1992 /*
1993  * rt2500usb module information.
1994  */
1995 static struct usb_device_id rt2500usb_device_table[] = {
1996         /* ASUS */
1997         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1998         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1999         /* Belkin */
2000         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
2001         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
2002         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
2003         /* Cisco Systems */
2004         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
2005         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
2006         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
2007         /* Conceptronic */
2008         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
2009         /* D-LINK */
2010         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
2011         /* Gigabyte */
2012         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
2013         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
2014         /* Hercules */
2015         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
2016         /* Melco */
2017         { USB_DEVICE(0x0411, 0x005e), USB_DEVICE_DATA(&rt2500usb_ops) },
2018         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
2019         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
2020         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
2021         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
2022         /* MSI */
2023         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
2024         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
2025         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
2026         /* Ralink */
2027         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
2028         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
2029         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
2030         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
2031         /* Siemens */
2032         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
2033         /* SMC */
2034         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
2035         /* Spairon */
2036         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
2037         /* Trust */
2038         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
2039         /* Zinwell */
2040         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
2041         { 0, }
2042 };
2043
2044 MODULE_AUTHOR(DRV_PROJECT);
2045 MODULE_VERSION(DRV_VERSION);
2046 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
2047 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
2048 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
2049 MODULE_LICENSE("GPL");
2050
2051 static struct usb_driver rt2500usb_driver = {
2052         .name           = KBUILD_MODNAME,
2053         .id_table       = rt2500usb_device_table,
2054         .probe          = rt2x00usb_probe,
2055         .disconnect     = rt2x00usb_disconnect,
2056         .suspend        = rt2x00usb_suspend,
2057         .resume         = rt2x00usb_resume,
2058 };
2059
2060 static int __init rt2500usb_init(void)
2061 {
2062         return usb_register(&rt2500usb_driver);
2063 }
2064
2065 static void __exit rt2500usb_exit(void)
2066 {
2067         usb_deregister(&rt2500usb_driver);
2068 }
2069
2070 module_init(rt2500usb_init);
2071 module_exit(rt2500usb_exit);