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