kernel/drivers/net/wireless/rt2x00/rt2500usb.c

   1 /*
   2         Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
   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, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 /*
  20         Module: rt2500usb
  21         Abstract: rt2500usb device specific routines.
  22         Supported chipsets: RT2570.
  23  */
  24
  25 #include <linux/delay.h>
  26 #include <linux/etherdevice.h>
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/slab.h>
  30 #include <linux/usb.h>
  31
  32 #include "rt2x00.h"
  33 #include "rt2x00usb.h"
  34 #include "rt2500usb.h"
  35
  36 /*
  37  * Allow hardware encryption to be disabled.
  38  */
  39 static bool modparam_nohwcrypt;
  40 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
  41 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  42
  43 /*
  44  * Register access.
  45  * All access to the CSR registers will go through the methods
  46  * rt2500usb_register_read and rt2500usb_register_write.
  47  * BBP and RF register require indirect register access,
  48  * and use the CSR registers BBPCSR and RFCSR to achieve this.
  49  * These indirect registers work with busy bits,
  50  * and we will try maximal REGISTER_USB_BUSY_COUNT times to access
  51  * the register while taking a REGISTER_BUSY_DELAY us delay
  52  * between each attampt. When the busy bit is still set at that time,
  53  * the access attempt is considered to have failed,
  54  * and we will print an error.
  55  * If the csr_mutex is already held then the _lock variants must
  56  * be used instead.
  57  */
  58 static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
  59                                            const unsigned int offset,
  60                                            u16 *value)
  61 {
  62         __le16 reg;
  63         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  64                                       USB_VENDOR_REQUEST_IN, offset,
  65                                       &reg, sizeof(reg));
  66         *value = le16_to_cpu(reg);
  67 }
  68
  69 static inline void rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
  70                                                 const unsigned int offset,
  71                                                 u16 *value)
  72 {
  73         __le16 reg;
  74         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
  75                                        USB_VENDOR_REQUEST_IN, offset,
  76                                        &reg, sizeof(reg), REGISTER_TIMEOUT);
  77         *value = le16_to_cpu(reg);
  78 }
  79
  80 static inline void rt2500usb_register_multiread(struct rt2x00_dev *rt2x00dev,
  81                                                 const unsigned int offset,
  82                                                 void *value, const u16 length)
  83 {
  84         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  85                                       USB_VENDOR_REQUEST_IN, offset,
  86                                       value, length);
  87 }
  88
  89 static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
  90                                             const unsigned int offset,
  91                                             u16 value)
  92 {
  93         __le16 reg = cpu_to_le16(value);
  94         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
  95                                       USB_VENDOR_REQUEST_OUT, offset,
  96                                       &reg, sizeof(reg));
  97 }
  98
  99 static inline void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
 100                                                  const unsigned int offset,
 101                                                  u16 value)
 102 {
 103         __le16 reg = cpu_to_le16(value);
 104         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE,
 105                                        USB_VENDOR_REQUEST_OUT, offset,
 106                                        &reg, sizeof(reg), REGISTER_TIMEOUT);
 107 }
 108
 109 static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
 110                                                  const unsigned int offset,
 111                                                  void *value, const u16 length)
 112 {
 113         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
 114                                       USB_VENDOR_REQUEST_OUT, offset,
 115                                       value, length);
 116 }
 117
 118 static int rt2500usb_regbusy_read(struct rt2x00_dev *rt2x00dev,
 119                                   const unsigned int offset,
 120                                   struct rt2x00_field16 field,
 121                                   u16 *reg)
 122 {
 123         unsigned int i;
 124
 125         for (i = 0; i < REGISTER_USB_BUSY_COUNT; i++) {
 126                 rt2500usb_register_read_lock(rt2x00dev, offset, reg);
 127                 if (!rt2x00_get_field16(*reg, field))
 128                         return 1;
 129                 udelay(REGISTER_BUSY_DELAY);
 130         }
 131
 132         rt2x00_err(rt2x00dev, "Indirect register access failed: offset=0x%.08x, value=0x%.08x\n",
 133                    offset, *reg);
 134         *reg = ~0;
 135
 136         return 0;
 137 }
 138
 139 #define WAIT_FOR_BBP(__dev, __reg) \
 140         rt2500usb_regbusy_read((__dev), PHY_CSR8, PHY_CSR8_BUSY, (__reg))
 141 #define WAIT_FOR_RF(__dev, __reg) \
 142         rt2500usb_regbusy_read((__dev), PHY_CSR10, PHY_CSR10_RF_BUSY, (__reg))
 143
 144 static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
 145                                 const unsigned int word, const u8 value)
 146 {
 147         u16 reg;
 148
 149         mutex_lock(&rt2x00dev->csr_mutex);
 150
 151         /*
 152          * Wait until the BBP becomes available, afterwards we
 153          * can safely write the new data into the register.
 154          */
 155         if (WAIT_FOR_BBP(rt2x00dev, &reg)) {
 156                 reg = 0;
 157                 rt2x00_set_field16(&reg, PHY_CSR7_DATA, value);
 158                 rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 159                 rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 0);
 160
 161                 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
 162         }
 163
 164         mutex_unlock(&rt2x00dev->csr_mutex);
 165 }
 166
 167 static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
 168                                const unsigned int word, u8 *value)
 169 {
 170         u16 reg;
 171
 172         mutex_lock(&rt2x00dev->csr_mutex);
 173
 174         /*
 175          * Wait until the BBP becomes available, afterwards we
 176          * can safely write the read request into the register.
 177          * After the data has been written, we wait until hardware
 178          * returns the correct value, if at any time the register
 179          * doesn't become available in time, reg will be 0xffffffff
 180          * which means we return 0xff to the caller.
 181          */
 182         if (WAIT_FOR_BBP(rt2x00dev, &reg)) {
 183                 reg = 0;
 184                 rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 185                 rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 1);
 186
 187                 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
 188
 189                 if (WAIT_FOR_BBP(rt2x00dev, &reg))
 190                         rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7, &reg);
 191         }
 192
 193         *value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
 194
 195         mutex_unlock(&rt2x00dev->csr_mutex);
 196 }
 197
 198 static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev,
 199                                const unsigned int word, const u32 value)
 200 {
 201         u16 reg;
 202
 203         mutex_lock(&rt2x00dev->csr_mutex);
 204
 205         /*
 206          * Wait until the RF becomes available, afterwards we
 207          * can safely write the new data into the register.
 208          */
 209         if (WAIT_FOR_RF(rt2x00dev, &reg)) {
 210                 reg = 0;
 211                 rt2x00_set_field16(&reg, PHY_CSR9_RF_VALUE, value);
 212                 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR9, reg);
 213
 214                 reg = 0;
 215                 rt2x00_set_field16(&reg, PHY_CSR10_RF_VALUE, value >> 16);
 216                 rt2x00_set_field16(&reg, PHY_CSR10_RF_NUMBER_OF_BITS, 20);
 217                 rt2x00_set_field16(&reg, PHY_CSR10_RF_IF_SELECT, 0);
 218                 rt2x00_set_field16(&reg, PHY_CSR10_RF_BUSY, 1);
 219
 220                 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR10, reg);
 221                 rt2x00_rf_write(rt2x00dev, word, value);
 222         }
 223
 224         mutex_unlock(&rt2x00dev->csr_mutex);
 225 }
 226
 227 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 228 static void _rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
 229                                      const unsigned int offset,
 230                                      u32 *value)
 231 {
 232         rt2500usb_register_read(rt2x00dev, offset, (u16 *)value);
 233 }
 234
 235 static void _rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
 236                                       const unsigned int offset,
 237                                       u32 value)
 238 {
 239         rt2500usb_register_write(rt2x00dev, offset, value);
 240 }
 241
 242 static const struct rt2x00debug rt2500usb_rt2x00debug = {
 243         .owner  = THIS_MODULE,
 244         .csr    = {
 245                 .read           = _rt2500usb_register_read,
 246                 .write          = _rt2500usb_register_write,
 247                 .flags          = RT2X00DEBUGFS_OFFSET,
 248                 .word_base      = CSR_REG_BASE,
 249                 .word_size      = sizeof(u16),
 250                 .word_count     = CSR_REG_SIZE / sizeof(u16),
 251         },
 252         .eeprom = {
 253                 .read           = rt2x00_eeprom_read,
 254                 .write          = rt2x00_eeprom_write,
 255                 .word_base      = EEPROM_BASE,
 256                 .word_size      = sizeof(u16),
 257                 .word_count     = EEPROM_SIZE / sizeof(u16),
 258         },
 259         .bbp    = {
 260                 .read           = rt2500usb_bbp_read,
 261                 .write          = rt2500usb_bbp_write,
 262                 .word_base      = BBP_BASE,
 263                 .word_size      = sizeof(u8),
 264                 .word_count     = BBP_SIZE / sizeof(u8),
 265         },
 266         .rf     = {
 267                 .read           = rt2x00_rf_read,
 268                 .write          = rt2500usb_rf_write,
 269                 .word_base      = RF_BASE,
 270                 .word_size      = sizeof(u32),
 271                 .word_count     = RF_SIZE / sizeof(u32),
 272         },
 273 };
 274 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 275
 276 static int rt2500usb_rfkill_poll(struct rt2x00_dev *rt2x00dev)
 277 {
 278         u16 reg;
 279
 280         rt2500usb_register_read(rt2x00dev, MAC_CSR19, &reg);
 281         return rt2x00_get_field16(reg, MAC_CSR19_VAL7);
 282 }
 283
 284 #ifdef CONFIG_RT2X00_LIB_LEDS
 285 static void rt2500usb_brightness_set(struct led_classdev *led_cdev,
 286                                      enum led_brightness brightness)
 287 {
 288         struct rt2x00_led *led =
 289             container_of(led_cdev, struct rt2x00_led, led_dev);
 290         unsigned int enabled = brightness != LED_OFF;
 291         u16 reg;
 292
 293         rt2500usb_register_read(led->rt2x00dev, MAC_CSR20, &reg);
 294
 295         if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC)
 296                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, enabled);
 297         else if (led->type == LED_TYPE_ACTIVITY)
 298                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, enabled);
 299
 300         rt2500usb_register_write(led->rt2x00dev, MAC_CSR20, reg);
 301 }
 302
 303 static int rt2500usb_blink_set(struct led_classdev *led_cdev,
 304                                unsigned long *delay_on,
 305                                unsigned long *delay_off)
 306 {
 307         struct rt2x00_led *led =
 308             container_of(led_cdev, struct rt2x00_led, led_dev);
 309         u16 reg;
 310
 311         rt2500usb_register_read(led->rt2x00dev, MAC_CSR21, &reg);
 312         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, *delay_on);
 313         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, *delay_off);
 314         rt2500usb_register_write(led->rt2x00dev, MAC_CSR21, reg);
 315
 316         return 0;
 317 }
 318
 319 static void rt2500usb_init_led(struct rt2x00_dev *rt2x00dev,
 320                                struct rt2x00_led *led,
 321                                enum led_type type)
 322 {
 323         led->rt2x00dev = rt2x00dev;
 324         led->type = type;
 325         led->led_dev.brightness_set = rt2500usb_brightness_set;
 326         led->led_dev.blink_set = rt2500usb_blink_set;
 327         led->flags = LED_INITIALIZED;
 328 }
 329 #endif /* CONFIG_RT2X00_LIB_LEDS */
 330
 331 /*
 332  * Configuration handlers.
 333  */
 334
 335 /*
 336  * rt2500usb does not differentiate between shared and pairwise
 337  * keys, so we should use the same function for both key types.
 338  */
 339 static int rt2500usb_config_key(struct rt2x00_dev *rt2x00dev,
 340                                 struct rt2x00lib_crypto *crypto,
 341                                 struct ieee80211_key_conf *key)
 342 {
 343         u32 mask;
 344         u16 reg;
 345         enum cipher curr_cipher;
 346
 347         if (crypto->cmd == SET_KEY) {
 348                 /*
 349                  * Disallow to set WEP key other than with index 0,
 350                  * it is known that not work at least on some hardware.
 351                  * SW crypto will be used in that case.
 352                  */
 353                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 354                      key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 355                     key->keyidx != 0)
 356                         return -EOPNOTSUPP;
 357
 358                 /*
 359                  * Pairwise key will always be entry 0, but this
 360                  * could collide with a shared key on the same
 361                  * position...
 362                  */
 363                 mask = TXRX_CSR0_KEY_ID.bit_mask;
 364
 365                 rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 366                 curr_cipher = rt2x00_get_field16(reg, TXRX_CSR0_ALGORITHM);
 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                  * Hardware requires that all keys use the same cipher
 377                  * (e.g. TKIP-only, AES-only, but not TKIP+AES).
 378                  * If this is not the first key, compare the cipher with the
 379                  * first one and fall back to SW crypto if not the same.
 380                  */
 381                 if (key->hw_key_idx > 0 && crypto->cipher != curr_cipher)
 382                         return -EOPNOTSUPP;
 383
 384                 rt2500usb_register_multiwrite(rt2x00dev, KEY_ENTRY(key->hw_key_idx),
 385                                               crypto->key, sizeof(crypto->key));
 386
 387                 /*
 388                  * The driver does not support the IV/EIV generation
 389                  * in hardware. However it demands the data to be provided
 390                  * both separately as well as inside the frame.
 391                  * We already provided the CONFIG_CRYPTO_COPY_IV to rt2x00lib
 392                  * to ensure rt2x00lib will not strip the data from the
 393                  * frame after the copy, now we must tell mac80211
 394                  * to generate the IV/EIV data.
 395                  */
 396                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 397                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
 398         }
 399
 400         /*
 401          * TXRX_CSR0_KEY_ID contains only single-bit fields to indicate
 402          * a particular key is valid.
 403          */
 404         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 405         rt2x00_set_field16(&reg, TXRX_CSR0_ALGORITHM, crypto->cipher);
 406         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 407
 408         mask = rt2x00_get_field16(reg, TXRX_CSR0_KEY_ID);
 409         if (crypto->cmd == SET_KEY)
 410                 mask |= 1 << key->hw_key_idx;
 411         else if (crypto->cmd == DISABLE_KEY)
 412                 mask &= ~(1 << key->hw_key_idx);
 413         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, mask);
 414         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 415
 416         return 0;
 417 }
 418
 419 static void rt2500usb_config_filter(struct rt2x00_dev *rt2x00dev,
 420                                     const unsigned int filter_flags)
 421 {
 422         u16 reg;
 423
 424         /*
 425          * Start configuration steps.
 426          * Note that the version error will always be dropped
 427          * and broadcast frames will always be accepted since
 428          * there is no filter for it at this time.
 429          */
 430         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 431         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
 432                            !(filter_flags & FIF_FCSFAIL));
 433         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
 434                            !(filter_flags & FIF_PLCPFAIL));
 435         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
 436                            !(filter_flags & FIF_CONTROL));
 437         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
 438                            !(filter_flags & FIF_PROMISC_IN_BSS));
 439         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
 440                            !(filter_flags & FIF_PROMISC_IN_BSS) &&
 441                            !rt2x00dev->intf_ap_count);
 442         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
 443         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
 444                            !(filter_flags & FIF_ALLMULTI));
 445         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
 446         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 447 }
 448
 449 static void rt2500usb_config_intf(struct rt2x00_dev *rt2x00dev,
 450                                   struct rt2x00_intf *intf,
 451                                   struct rt2x00intf_conf *conf,
 452                                   const unsigned int flags)
 453 {
 454         unsigned int bcn_preload;
 455         u16 reg;
 456
 457         if (flags & CONFIG_UPDATE_TYPE) {
 458                 /*
 459                  * Enable beacon config
 460                  */
 461                 bcn_preload = PREAMBLE + GET_DURATION(IEEE80211_HEADER, 20);
 462                 rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
 463                 rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET, bcn_preload >> 6);
 464                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW,
 465                                    2 * (conf->type != NL80211_IFTYPE_STATION));
 466                 rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
 467
 468                 /*
 469                  * Enable synchronisation.
 470                  */
 471                 rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 472                 rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
 473                 rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 474
 475                 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 476                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, conf->sync);
 477                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 478         }
 479
 480         if (flags & CONFIG_UPDATE_MAC)
 481                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, conf->mac,
 482                                               (3 * sizeof(__le16)));
 483
 484         if (flags & CONFIG_UPDATE_BSSID)
 485                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, conf->bssid,
 486                                               (3 * sizeof(__le16)));
 487 }
 488
 489 static void rt2500usb_config_erp(struct rt2x00_dev *rt2x00dev,
 490                                  struct rt2x00lib_erp *erp,
 491                                  u32 changed)
 492 {
 493         u16 reg;
 494
 495         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 496                 rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
 497                 rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
 498                                    !!erp->short_preamble);
 499                 rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
 500         }
 501
 502         if (changed & BSS_CHANGED_BASIC_RATES)
 503                 rt2500usb_register_write(rt2x00dev, TXRX_CSR11,
 504                                          erp->basic_rates);
 505
 506         if (changed & BSS_CHANGED_BEACON_INT) {
 507                 rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 508                 rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL,
 509                                    erp->beacon_int * 4);
 510                 rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 511         }
 512
 513         if (changed & BSS_CHANGED_ERP_SLOT) {
 514                 rt2500usb_register_write(rt2x00dev, MAC_CSR10, erp->slot_time);
 515                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, erp->sifs);
 516                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, erp->eifs);
 517         }
 518 }
 519
 520 static void rt2500usb_config_ant(struct rt2x00_dev *rt2x00dev,
 521                                  struct antenna_setup *ant)
 522 {
 523         u8 r2;
 524         u8 r14;
 525         u16 csr5;
 526         u16 csr6;
 527
 528         /*
 529          * We should never come here because rt2x00lib is supposed
 530          * to catch this and send us the correct antenna explicitely.
 531          */
 532         BUG_ON(ant->rx == ANTENNA_SW_DIVERSITY ||
 533                ant->tx == ANTENNA_SW_DIVERSITY);
 534
 535         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
 536         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
 537         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
 538         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
 539
 540         /*
 541          * Configure the TX antenna.
 542          */
 543         switch (ant->tx) {
 544         case ANTENNA_HW_DIVERSITY:
 545                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
 546                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
 547                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
 548                 break;
 549         case ANTENNA_A:
 550                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
 551                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
 552                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
 553                 break;
 554         case ANTENNA_B:
 555         default:
 556                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
 557                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
 558                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
 559                 break;
 560         }
 561
 562         /*
 563          * Configure the RX antenna.
 564          */
 565         switch (ant->rx) {
 566         case ANTENNA_HW_DIVERSITY:
 567                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
 568                 break;
 569         case ANTENNA_A:
 570                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
 571                 break;
 572         case ANTENNA_B:
 573         default:
 574                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
 575                 break;
 576         }
 577
 578         /*
 579          * RT2525E and RT5222 need to flip TX I/Q
 580          */
 581         if (rt2x00_rf(rt2x00dev, RF2525E) || rt2x00_rf(rt2x00dev, RF5222)) {
 582                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
 583                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
 584                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
 585
 586                 /*
 587                  * RT2525E does not need RX I/Q Flip.
 588                  */
 589                 if (rt2x00_rf(rt2x00dev, RF2525E))
 590                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
 591         } else {
 592                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
 593                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
 594         }
 595
 596         rt2500usb_bbp_write(rt2x00dev, 2, r2);
 597         rt2500usb_bbp_write(rt2x00dev, 14, r14);
 598         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
 599         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
 600 }
 601
 602 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
 603                                      struct rf_channel *rf, const int txpower)
 604 {
 605         /*
 606          * Set TXpower.
 607          */
 608         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 609
 610         /*
 611          * For RT2525E we should first set the channel to half band higher.
 612          */
 613         if (rt2x00_rf(rt2x00dev, RF2525E)) {
 614                 static const u32 vals[] = {
 615                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
 616                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
 617                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
 618                         0x00000902, 0x00000906
 619                 };
 620
 621                 rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
 622                 if (rf->rf4)
 623                         rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
 624         }
 625
 626         rt2500usb_rf_write(rt2x00dev, 1, rf->rf1);
 627         rt2500usb_rf_write(rt2x00dev, 2, rf->rf2);
 628         rt2500usb_rf_write(rt2x00dev, 3, rf->rf3);
 629         if (rf->rf4)
 630                 rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
 631 }
 632
 633 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
 634                                      const int txpower)
 635 {
 636         u32 rf3;
 637
 638         rt2x00_rf_read(rt2x00dev, 3, &rf3);
 639         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 640         rt2500usb_rf_write(rt2x00dev, 3, rf3);
 641 }
 642
 643 static void rt2500usb_config_ps(struct rt2x00_dev *rt2x00dev,
 644                                 struct rt2x00lib_conf *libconf)
 645 {
 646         enum dev_state state =
 647             (libconf->conf->flags & IEEE80211_CONF_PS) ?
 648                 STATE_SLEEP : STATE_AWAKE;
 649         u16 reg;
 650
 651         if (state == STATE_SLEEP) {
 652                 rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 653                 rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON,
 654                                    rt2x00dev->beacon_int - 20);
 655                 rt2x00_set_field16(&reg, MAC_CSR18_BEACONS_BEFORE_WAKEUP,
 656                                    libconf->conf->listen_interval - 1);
 657
 658                 /* We must first disable autowake before it can be enabled */
 659                 rt2x00_set_field16(&reg, MAC_CSR18_AUTO_WAKE, 0);
 660                 rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 661
 662                 rt2x00_set_field16(&reg, MAC_CSR18_AUTO_WAKE, 1);
 663                 rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 664         } else {
 665                 rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 666                 rt2x00_set_field16(&reg, MAC_CSR18_AUTO_WAKE, 0);
 667                 rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 668         }
 669
 670         rt2x00dev->ops->lib->set_device_state(rt2x00dev, state);
 671 }
 672
 673 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
 674                              struct rt2x00lib_conf *libconf,
 675                              const unsigned int flags)
 676 {
 677         if (flags & IEEE80211_CONF_CHANGE_CHANNEL)
 678                 rt2500usb_config_channel(rt2x00dev, &libconf->rf,
 679                                          libconf->conf->power_level);
 680         if ((flags & IEEE80211_CONF_CHANGE_POWER) &&
 681             !(flags & IEEE80211_CONF_CHANGE_CHANNEL))
 682                 rt2500usb_config_txpower(rt2x00dev,
 683                                          libconf->conf->power_level);
 684         if (flags & IEEE80211_CONF_CHANGE_PS)
 685                 rt2500usb_config_ps(rt2x00dev, libconf);
 686 }
 687
 688 /*
 689  * Link tuning
 690  */
 691 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
 692                                  struct link_qual *qual)
 693 {
 694         u16 reg;
 695
 696         /*
 697          * Update FCS error count from register.
 698          */
 699         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
 700         qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
 701
 702         /*
 703          * Update False CCA count from register.
 704          */
 705         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
 706         qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
 707 }
 708
 709 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev,
 710                                   struct link_qual *qual)
 711 {
 712         u16 eeprom;
 713         u16 value;
 714
 715         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
 716         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
 717         rt2500usb_bbp_write(rt2x00dev, 24, value);
 718
 719         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
 720         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
 721         rt2500usb_bbp_write(rt2x00dev, 25, value);
 722
 723         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
 724         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
 725         rt2500usb_bbp_write(rt2x00dev, 61, value);
 726
 727         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
 728         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
 729         rt2500usb_bbp_write(rt2x00dev, 17, value);
 730
 731         qual->vgc_level = value;
 732 }
 733
 734 /*
 735  * Queue handlers.
 736  */
 737 static void rt2500usb_start_queue(struct data_queue *queue)
 738 {
 739         struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
 740         u16 reg;
 741
 742         switch (queue->qid) {
 743         case QID_RX:
 744                 rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 745                 rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 0);
 746                 rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 747                 break;
 748         case QID_BEACON:
 749                 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 750                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
 751                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
 752                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
 753                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 754                 break;
 755         default:
 756                 break;
 757         }
 758 }
 759
 760 static void rt2500usb_stop_queue(struct data_queue *queue)
 761 {
 762         struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
 763         u16 reg;
 764
 765         switch (queue->qid) {
 766         case QID_RX:
 767                 rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 768                 rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 769                 rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 770                 break;
 771         case QID_BEACON:
 772                 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 773                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
 774                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
 775                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
 776                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 777                 break;
 778         default:
 779                 break;
 780         }
 781 }
 782
 783 /*
 784  * Initialization functions.
 785  */
 786 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
 787 {
 788         u16 reg;
 789
 790         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
 791                                     USB_MODE_TEST, REGISTER_TIMEOUT);
 792         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
 793                                     0x00f0, REGISTER_TIMEOUT);
 794
 795         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 796         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 797         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 798
 799         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
 800         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
 801
 802         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 803         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
 804         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
 805         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 806         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 807
 808         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 809         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 810         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 811         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 812         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 813
 814         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
 815         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
 816         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
 817         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
 818         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
 819         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
 820
 821         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
 822         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
 823         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
 824         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
 825         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
 826         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
 827
 828         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 829         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
 830         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
 831         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
 832         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
 833         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 834
 835         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 836         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
 837         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
 838         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
 839         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
 840         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 841
 842         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 843         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
 844         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, 0);
 845         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
 846         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
 847         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 848
 849         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
 850         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
 851
 852         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 853                 return -EBUSY;
 854
 855         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 856         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 857         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 858         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
 859         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 860
 861         if (rt2x00_rev(rt2x00dev) >= RT2570_VERSION_C) {
 862                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
 863                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 0);
 864         } else {
 865                 reg = 0;
 866                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 1);
 867                 rt2x00_set_field16(&reg, PHY_CSR2_LNA_MODE, 3);
 868         }
 869         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
 870
 871         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
 872         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
 873         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
 874         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
 875
 876         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 877         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
 878                            rt2x00dev->rx->data_size);
 879         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
 880
 881         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 882         rt2x00_set_field16(&reg, TXRX_CSR0_ALGORITHM, CIPHER_NONE);
 883         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 884         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0);
 885         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 886
 887         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 888         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
 889         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 890
 891         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
 892         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
 893         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
 894
 895         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 896         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
 897         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 898
 899         return 0;
 900 }
 901
 902 static int rt2500usb_wait_bbp_ready(struct rt2x00_dev *rt2x00dev)
 903 {
 904         unsigned int i;
 905         u8 value;
 906
 907         for (i = 0; i < REGISTER_USB_BUSY_COUNT; i++) {
 908                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
 909                 if ((value != 0xff) && (value != 0x00))
 910                         return 0;
 911                 udelay(REGISTER_BUSY_DELAY);
 912         }
 913
 914         rt2x00_err(rt2x00dev, "BBP register access failed, aborting\n");
 915         return -EACCES;
 916 }
 917
 918 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
 919 {
 920         unsigned int i;
 921         u16 eeprom;
 922         u8 value;
 923         u8 reg_id;
 924
 925         if (unlikely(rt2500usb_wait_bbp_ready(rt2x00dev)))
 926                 return -EACCES;
 927
 928         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
 929         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
 930         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
 931         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
 932         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
 933         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
 934         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
 935         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
 936         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
 937         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
 938         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
 939         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
 940         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
 941         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
 942         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
 943         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
 944         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
 945         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
 946         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
 947         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
 948         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
 949         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
 950         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
 951         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
 952         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
 953         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
 954         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
 955         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
 956         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
 957         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
 958         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
 959
 960         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 961                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 962
 963                 if (eeprom != 0xffff && eeprom != 0x0000) {
 964                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 965                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 966                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
 967                 }
 968         }
 969
 970         return 0;
 971 }
 972
 973 /*
 974  * Device state switch handlers.
 975  */
 976 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
 977 {
 978         /*
 979          * Initialize all registers.
 980          */
 981         if (unlikely(rt2500usb_init_registers(rt2x00dev) ||
 982                      rt2500usb_init_bbp(rt2x00dev)))
 983                 return -EIO;
 984
 985         return 0;
 986 }
 987
 988 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
 989 {
 990         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
 991         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
 992
 993         /*
 994          * Disable synchronisation.
 995          */
 996         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 997
 998         rt2x00usb_disable_radio(rt2x00dev);
 999 }
1000
1001 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
1002                                enum dev_state state)
1003 {
1004         u16 reg;
1005         u16 reg2;
1006         unsigned int i;
1007         char put_to_sleep;
1008         char bbp_state;
1009         char rf_state;
1010
1011         put_to_sleep = (state != STATE_AWAKE);
1012
1013         reg = 0;
1014         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
1015         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
1016         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
1017         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1018         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
1019         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1020
1021         /*
1022          * Device is not guaranteed to be in the requested state yet.
1023          * We must wait until the register indicates that the
1024          * device has entered the correct state.
1025          */
1026         for (i = 0; i < REGISTER_USB_BUSY_COUNT; i++) {
1027                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
1028                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
1029                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
1030                 if (bbp_state == state && rf_state == state)
1031                         return 0;
1032                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1033                 msleep(30);
1034         }
1035
1036         return -EBUSY;
1037 }
1038
1039 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
1040                                       enum dev_state state)
1041 {
1042         int retval = 0;
1043
1044         switch (state) {
1045         case STATE_RADIO_ON:
1046                 retval = rt2500usb_enable_radio(rt2x00dev);
1047                 break;
1048         case STATE_RADIO_OFF:
1049                 rt2500usb_disable_radio(rt2x00dev);
1050                 break;
1051         case STATE_RADIO_IRQ_ON:
1052         case STATE_RADIO_IRQ_OFF:
1053                 /* No support, but no error either */
1054                 break;
1055         case STATE_DEEP_SLEEP:
1056         case STATE_SLEEP:
1057         case STATE_STANDBY:
1058         case STATE_AWAKE:
1059                 retval = rt2500usb_set_state(rt2x00dev, state);
1060                 break;
1061         default:
1062                 retval = -ENOTSUPP;
1063                 break;
1064         }
1065
1066         if (unlikely(retval))
1067                 rt2x00_err(rt2x00dev, "Device failed to enter state %d (%d)\n",
1068                            state, retval);
1069
1070         return retval;
1071 }
1072
1073 /*
1074  * TX descriptor initialization
1075  */
1076 static void rt2500usb_write_tx_desc(struct queue_entry *entry,
1077                                     struct txentry_desc *txdesc)
1078 {
1079         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1080         __le32 *txd = (__le32 *) entry->skb->data;
1081         u32 word;
1082
1083         /*
1084          * Start writing the descriptor words.
1085          */
1086         rt2x00_desc_read(txd, 0, &word);
1087         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, txdesc->retry_limit);
1088         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1089                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1090         rt2x00_set_field32(&word, TXD_W0_ACK,
1091                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1092         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1093                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1094         rt2x00_set_field32(&word, TXD_W0_OFDM,
1095                            (txdesc->rate_mode == RATE_MODE_OFDM));
1096         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1097                            test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags));
1098         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->u.plcp.ifs);
1099         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, txdesc->length);
1100         rt2x00_set_field32(&word, TXD_W0_CIPHER, !!txdesc->cipher);
1101         rt2x00_set_field32(&word, TXD_W0_KEY_ID, txdesc->key_idx);
1102         rt2x00_desc_write(txd, 0, word);
1103
1104         rt2x00_desc_read(txd, 1, &word);
1105         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, txdesc->iv_offset);
1106         rt2x00_set_field32(&word, TXD_W1_AIFS, entry->queue->aifs);
1107         rt2x00_set_field32(&word, TXD_W1_CWMIN, entry->queue->cw_min);
1108         rt2x00_set_field32(&word, TXD_W1_CWMAX, entry->queue->cw_max);
1109         rt2x00_desc_write(txd, 1, word);
1110
1111         rt2x00_desc_read(txd, 2, &word);
1112         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->u.plcp.signal);
1113         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->u.plcp.service);
1114         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW,
1115                            txdesc->u.plcp.length_low);
1116         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH,
1117                            txdesc->u.plcp.length_high);
1118         rt2x00_desc_write(txd, 2, word);
1119
1120         if (test_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags)) {
1121                 _rt2x00_desc_write(txd, 3, skbdesc->iv[0]);
1122                 _rt2x00_desc_write(txd, 4, skbdesc->iv[1]);
1123         }
1124
1125         /*
1126          * Register descriptor details in skb frame descriptor.
1127          */
1128         skbdesc->flags |= SKBDESC_DESC_IN_SKB;
1129         skbdesc->desc = txd;
1130         skbdesc->desc_len = TXD_DESC_SIZE;
1131 }
1132
1133 /*
1134  * TX data initialization
1135  */
1136 static void rt2500usb_beacondone(struct urb *urb);
1137
1138 static void rt2500usb_write_beacon(struct queue_entry *entry,
1139                                    struct txentry_desc *txdesc)
1140 {
1141         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
1142         struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev);
1143         struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
1144         int pipe = usb_sndbulkpipe(usb_dev, entry->queue->usb_endpoint);
1145         int length;
1146         u16 reg, reg0;
1147
1148         /*
1149          * Disable beaconing while we are reloading the beacon data,
1150          * otherwise we might be sending out invalid data.
1151          */
1152         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1153         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
1154         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1155
1156         /*
1157          * Add space for the descriptor in front of the skb.
1158          */
1159         skb_push(entry->skb, TXD_DESC_SIZE);
1160         memset(entry->skb->data, 0, TXD_DESC_SIZE);
1161
1162         /*
1163          * Write the TX descriptor for the beacon.
1164          */
1165         rt2500usb_write_tx_desc(entry, txdesc);
1166
1167         /*
1168          * Dump beacon to userspace through debugfs.
1169          */
1170         rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_BEACON, entry->skb);
1171
1172         /*
1173          * USB devices cannot blindly pass the skb->len as the
1174          * length of the data to usb_fill_bulk_urb. Pass the skb
1175          * to the driver to determine what the length should be.
1176          */
1177         length = rt2x00dev->ops->lib->get_tx_data_len(entry);
1178
1179         usb_fill_bulk_urb(bcn_priv->urb, usb_dev, pipe,
1180                           entry->skb->data, length, rt2500usb_beacondone,
1181                           entry);
1182
1183         /*
1184          * Second we need to create the guardian byte.
1185          * We only need a single byte, so lets recycle
1186          * the 'flags' field we are not using for beacons.
1187          */
1188         bcn_priv->guardian_data = 0;
1189         usb_fill_bulk_urb(bcn_priv->guardian_urb, usb_dev, pipe,
1190                           &bcn_priv->guardian_data, 1, rt2500usb_beacondone,
1191                           entry);
1192
1193         /*
1194          * Send out the guardian byte.
1195          */
1196         usb_submit_urb(bcn_priv->guardian_urb, GFP_ATOMIC);
1197
1198         /*
1199          * Enable beaconing again.
1200          */
1201         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
1202         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
1203         reg0 = reg;
1204         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1205         /*
1206          * Beacon generation will fail initially.
1207          * To prevent this we need to change the TXRX_CSR19
1208          * register several times (reg0 is the same as reg
1209          * except for TXRX_CSR19_BEACON_GEN, which is 0 in reg0
1210          * and 1 in reg).
1211          */
1212         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1213         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg0);
1214         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1215         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg0);
1216         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1217 }
1218
1219 static int rt2500usb_get_tx_data_len(struct queue_entry *entry)
1220 {
1221         int length;
1222
1223         /*
1224          * The length _must_ be a multiple of 2,
1225          * but it must _not_ be a multiple of the USB packet size.
1226          */
1227         length = roundup(entry->skb->len, 2);
1228         length += (2 * !(length % entry->queue->usb_maxpacket));
1229
1230         return length;
1231 }
1232
1233 /*
1234  * RX control handlers
1235  */
1236 static void rt2500usb_fill_rxdone(struct queue_entry *entry,
1237                                   struct rxdone_entry_desc *rxdesc)
1238 {
1239         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
1240         struct queue_entry_priv_usb *entry_priv = entry->priv_data;
1241         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1242         __le32 *rxd =
1243             (__le32 *)(entry->skb->data +
1244                        (entry_priv->urb->actual_length -
1245                         entry->queue->desc_size));
1246         u32 word0;
1247         u32 word1;
1248
1249         /*
1250          * Copy descriptor to the skbdesc->desc buffer, making it safe from moving of
1251          * frame data in rt2x00usb.
1252          */
1253         memcpy(skbdesc->desc, rxd, skbdesc->desc_len);
1254         rxd = (__le32 *)skbdesc->desc;
1255
1256         /*
1257          * It is now safe to read the descriptor on all architectures.
1258          */
1259         rt2x00_desc_read(rxd, 0, &word0);
1260         rt2x00_desc_read(rxd, 1, &word1);
1261
1262         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1263                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1264         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1265                 rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1266
1267         rxdesc->cipher = rt2x00_get_field32(word0, RXD_W0_CIPHER);
1268         if (rt2x00_get_field32(word0, RXD_W0_CIPHER_ERROR))
1269                 rxdesc->cipher_status = RX_CRYPTO_FAIL_KEY;
1270
1271         if (rxdesc->cipher != CIPHER_NONE) {
1272                 _rt2x00_desc_read(rxd, 2, &rxdesc->iv[0]);
1273                 _rt2x00_desc_read(rxd, 3, &rxdesc->iv[1]);
1274                 rxdesc->dev_flags |= RXDONE_CRYPTO_IV;
1275
1276                 /* ICV is located at the end of frame */
1277
1278                 rxdesc->flags |= RX_FLAG_MMIC_STRIPPED;
1279                 if (rxdesc->cipher_status == RX_CRYPTO_SUCCESS)
1280                         rxdesc->flags |= RX_FLAG_DECRYPTED;
1281                 else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC)
1282                         rxdesc->flags |= RX_FLAG_MMIC_ERROR;
1283         }
1284
1285         /*
1286          * Obtain the status about this packet.
1287          * When frame was received with an OFDM bitrate,
1288          * the signal is the PLCP value. If it was received with
1289          * a CCK bitrate the signal is the rate in 100kbit/s.
1290          */
1291         rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1292         rxdesc->rssi =
1293             rt2x00_get_field32(word1, RXD_W1_RSSI) - rt2x00dev->rssi_offset;
1294         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1295
1296         if (rt2x00_get_field32(word0, RXD_W0_OFDM))
1297                 rxdesc->dev_flags |= RXDONE_SIGNAL_PLCP;
1298         else
1299                 rxdesc->dev_flags |= RXDONE_SIGNAL_BITRATE;
1300         if (rt2x00_get_field32(word0, RXD_W0_MY_BSS))
1301                 rxdesc->dev_flags |= RXDONE_MY_BSS;
1302
1303         /*
1304          * Adjust the skb memory window to the frame boundaries.
1305          */
1306         skb_trim(entry->skb, rxdesc->size);
1307 }
1308
1309 /*
1310  * Interrupt functions.
1311  */
1312 static void rt2500usb_beacondone(struct urb *urb)
1313 {
1314         struct queue_entry *entry = (struct queue_entry *)urb->context;
1315         struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
1316
1317         if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags))
1318                 return;
1319
1320         /*
1321          * Check if this was the guardian beacon,
1322          * if that was the case we need to send the real beacon now.
1323          * Otherwise we should free the sk_buffer, the device
1324          * should be doing the rest of the work now.
1325          */
1326         if (bcn_priv->guardian_urb == urb) {
1327                 usb_submit_urb(bcn_priv->urb, GFP_ATOMIC);
1328         } else if (bcn_priv->urb == urb) {
1329                 dev_kfree_skb(entry->skb);
1330                 entry->skb = NULL;
1331         }
1332 }
1333
1334 /*
1335  * Device probe functions.
1336  */
1337 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1338 {
1339         u16 word;
1340         u8 *mac;
1341         u8 bbp;
1342
1343         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1344
1345         /*
1346          * Start validation of the data that has been read.
1347          */
1348         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1349         if (!is_valid_ether_addr(mac)) {
1350                 eth_random_addr(mac);
1351                 rt2x00_eeprom_dbg(rt2x00dev, "MAC: %pM\n", mac);
1352         }
1353
1354         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1355         if (word == 0xffff) {
1356                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1357                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1358                                    ANTENNA_SW_DIVERSITY);
1359                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1360                                    ANTENNA_SW_DIVERSITY);
1361                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1362                                    LED_MODE_DEFAULT);
1363                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1364                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1365                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1366                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1367                 rt2x00_eeprom_dbg(rt2x00dev, "Antenna: 0x%04x\n", word);
1368         }
1369
1370         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1371         if (word == 0xffff) {
1372                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1373                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1374                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1375                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1376                 rt2x00_eeprom_dbg(rt2x00dev, "NIC: 0x%04x\n", word);
1377         }
1378
1379         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1380         if (word == 0xffff) {
1381                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1382                                    DEFAULT_RSSI_OFFSET);
1383                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1384                 rt2x00_eeprom_dbg(rt2x00dev, "Calibrate offset: 0x%04x\n",
1385                                   word);
1386         }
1387
1388         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1389         if (word == 0xffff) {
1390                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1391                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1392                 rt2x00_eeprom_dbg(rt2x00dev, "BBPtune: 0x%04x\n", word);
1393         }
1394
1395         /*
1396          * Switch lower vgc bound to current BBP R17 value,
1397          * lower the value a bit for better quality.
1398          */
1399         rt2500usb_bbp_read(rt2x00dev, 17, &bbp);
1400         bbp -= 6;
1401
1402         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1403         if (word == 0xffff) {
1404                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1405                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1406                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1407                 rt2x00_eeprom_dbg(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1408         } else {
1409                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1410                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1411         }
1412
1413         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1414         if (word == 0xffff) {
1415                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1416                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1417                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1418                 rt2x00_eeprom_dbg(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1419         }
1420
1421         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1422         if (word == 0xffff) {
1423                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1424                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1425                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1426                 rt2x00_eeprom_dbg(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1427         }
1428
1429         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1430         if (word == 0xffff) {
1431                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1432                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1433                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1434                 rt2x00_eeprom_dbg(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1435         }
1436
1437         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1438         if (word == 0xffff) {
1439                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1440                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1441                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1442                 rt2x00_eeprom_dbg(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1443         }
1444
1445         return 0;
1446 }
1447
1448 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1449 {
1450         u16 reg;
1451         u16 value;
1452         u16 eeprom;
1453
1454         /*
1455          * Read EEPROM word for configuration.
1456          */
1457         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1458
1459         /*
1460          * Identify RF chipset.
1461          */
1462         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1463         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1464         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1465
1466         if (((reg & 0xfff0) != 0) || ((reg & 0x0000000f) == 0)) {
1467                 rt2x00_err(rt2x00dev, "Invalid RT chipset detected\n");
1468                 return -ENODEV;
1469         }
1470
1471         if (!rt2x00_rf(rt2x00dev, RF2522) &&
1472             !rt2x00_rf(rt2x00dev, RF2523) &&
1473             !rt2x00_rf(rt2x00dev, RF2524) &&
1474             !rt2x00_rf(rt2x00dev, RF2525) &&
1475             !rt2x00_rf(rt2x00dev, RF2525E) &&
1476             !rt2x00_rf(rt2x00dev, RF5222)) {
1477                 rt2x00_err(rt2x00dev, "Invalid RF chipset detected\n");
1478                 return -ENODEV;
1479         }
1480
1481         /*
1482          * Identify default antenna configuration.
1483          */
1484         rt2x00dev->default_ant.tx =
1485             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1486         rt2x00dev->default_ant.rx =
1487             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1488
1489         /*
1490          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1491          * I am not 100% sure about this, but the legacy drivers do not
1492          * indicate antenna swapping in software is required when
1493          * diversity is enabled.
1494          */
1495         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1496                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1497         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1498                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1499
1500         /*
1501          * Store led mode, for correct led behaviour.
1502          */
1503 #ifdef CONFIG_RT2X00_LIB_LEDS
1504         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1505
1506         rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO);
1507         if (value == LED_MODE_TXRX_ACTIVITY ||
1508             value == LED_MODE_DEFAULT ||
1509             value == LED_MODE_ASUS)
1510                 rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_qual,
1511                                    LED_TYPE_ACTIVITY);
1512 #endif /* CONFIG_RT2X00_LIB_LEDS */
1513
1514         /*
1515          * Detect if this device has an hardware controlled radio.
1516          */
1517         if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_HARDWARE_RADIO))
1518                 __set_bit(CAPABILITY_HW_BUTTON, &rt2x00dev->cap_flags);
1519
1520         /*
1521          * Read the RSSI <-> dBm offset information.
1522          */
1523         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1524         rt2x00dev->rssi_offset =
1525             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1526
1527         return 0;
1528 }
1529
1530 /*
1531  * RF value list for RF2522
1532  * Supports: 2.4 GHz
1533  */
1534 static const struct rf_channel rf_vals_bg_2522[] = {
1535         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1536         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1537         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1538         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1539         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1540         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1541         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1542         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1543         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1544         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1545         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1546         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1547         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1548         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1549 };
1550
1551 /*
1552  * RF value list for RF2523
1553  * Supports: 2.4 GHz
1554  */
1555 static const struct rf_channel rf_vals_bg_2523[] = {
1556         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1557         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1558         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1559         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1560         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1561         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1562         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1563         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1564         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1565         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1566         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1567         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1568         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1569         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1570 };
1571
1572 /*
1573  * RF value list for RF2524
1574  * Supports: 2.4 GHz
1575  */
1576 static const struct rf_channel rf_vals_bg_2524[] = {
1577         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1578         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1579         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1580         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1581         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1582         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1583         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1584         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1585         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1586         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1587         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1588         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1589         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1590         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1591 };
1592
1593 /*
1594  * RF value list for RF2525
1595  * Supports: 2.4 GHz
1596  */
1597 static const struct rf_channel rf_vals_bg_2525[] = {
1598         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1599         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1600         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1601         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1602         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1603         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1604         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1605         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1606         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1607         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1608         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1609         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1610         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1611         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1612 };
1613
1614 /*
1615  * RF value list for RF2525e
1616  * Supports: 2.4 GHz
1617  */
1618 static const struct rf_channel rf_vals_bg_2525e[] = {
1619         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1620         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1621         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1622         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1623         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1624         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1625         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1626         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1627         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1628         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1629         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1630         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1631         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1632         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1633 };
1634
1635 /*
1636  * RF value list for RF5222
1637  * Supports: 2.4 GHz & 5.2 GHz
1638  */
1639 static const struct rf_channel rf_vals_5222[] = {
1640         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1641         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1642         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1643         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1644         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1645         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1646         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1647         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1648         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1649         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1650         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1651         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1652         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1653         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1654
1655         /* 802.11 UNI / HyperLan 2 */
1656         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1657         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1658         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1659         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1660         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1661         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1662         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1663         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1664
1665         /* 802.11 HyperLan 2 */
1666         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1667         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1668         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1669         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1670         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1671         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1672         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1673         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1674         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1675         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1676
1677         /* 802.11 UNII */
1678         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1679         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1680         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1681         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1682         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1683 };
1684
1685 static int rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1686 {
1687         struct hw_mode_spec *spec = &rt2x00dev->spec;
1688         struct channel_info *info;
1689         char *tx_power;
1690         unsigned int i;
1691
1692         /*
1693          * Initialize all hw fields.
1694          *
1695          * Don't set IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING unless we are
1696          * capable of sending the buffered frames out after the DTIM
1697          * transmission using rt2x00lib_beacondone. This will send out
1698          * multicast and broadcast traffic immediately instead of buffering it
1699          * infinitly and thus dropping it after some time.
1700          */
1701         rt2x00dev->hw->flags =
1702             IEEE80211_HW_RX_INCLUDES_FCS |
1703             IEEE80211_HW_SIGNAL_DBM |
1704             IEEE80211_HW_SUPPORTS_PS |
1705             IEEE80211_HW_PS_NULLFUNC_STACK;
1706
1707         /*
1708          * Disable powersaving as default.
1709          */
1710         rt2x00dev->hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
1711
1712         SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev);
1713         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1714                                 rt2x00_eeprom_addr(rt2x00dev,
1715                                                    EEPROM_MAC_ADDR_0));
1716
1717         /*
1718          * Initialize hw_mode information.
1719          */
1720         spec->supported_bands = SUPPORT_BAND_2GHZ;
1721         spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM;
1722
1723         if (rt2x00_rf(rt2x00dev, RF2522)) {
1724                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1725                 spec->channels = rf_vals_bg_2522;
1726         } else if (rt2x00_rf(rt2x00dev, RF2523)) {
1727                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1728                 spec->channels = rf_vals_bg_2523;
1729         } else if (rt2x00_rf(rt2x00dev, RF2524)) {
1730                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1731                 spec->channels = rf_vals_bg_2524;
1732         } else if (rt2x00_rf(rt2x00dev, RF2525)) {
1733                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1734                 spec->channels = rf_vals_bg_2525;
1735         } else if (rt2x00_rf(rt2x00dev, RF2525E)) {
1736                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1737                 spec->channels = rf_vals_bg_2525e;
1738         } else if (rt2x00_rf(rt2x00dev, RF5222)) {
1739                 spec->supported_bands |= SUPPORT_BAND_5GHZ;
1740                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1741                 spec->channels = rf_vals_5222;
1742         }
1743
1744         /*
1745          * Create channel information array
1746          */
1747         info = kcalloc(spec->num_channels, sizeof(*info), GFP_KERNEL);
1748         if (!info)
1749                 return -ENOMEM;
1750
1751         spec->channels_info = info;
1752
1753         tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1754         for (i = 0; i < 14; i++) {
1755                 info[i].max_power = MAX_TXPOWER;
1756                 info[i].default_power1 = TXPOWER_FROM_DEV(tx_power[i]);
1757         }
1758
1759         if (spec->num_channels > 14) {
1760                 for (i = 14; i < spec->num_channels; i++) {
1761                         info[i].max_power = MAX_TXPOWER;
1762                         info[i].default_power1 = DEFAULT_TXPOWER;
1763                 }
1764         }
1765
1766         return 0;
1767 }
1768
1769 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1770 {
1771         int retval;
1772         u16 reg;
1773
1774         /*
1775          * Allocate eeprom data.
1776          */
1777         retval = rt2500usb_validate_eeprom(rt2x00dev);
1778         if (retval)
1779                 return retval;
1780
1781         retval = rt2500usb_init_eeprom(rt2x00dev);
1782         if (retval)
1783                 return retval;
1784
1785         /*
1786          * Enable rfkill polling by setting GPIO direction of the
1787          * rfkill switch GPIO pin correctly.
1788          */
1789         rt2500usb_register_read(rt2x00dev, MAC_CSR19, &reg);
1790         rt2x00_set_field16(&reg, MAC_CSR19_DIR0, 0);
1791         rt2500usb_register_write(rt2x00dev, MAC_CSR19, reg);
1792
1793         /*
1794          * Initialize hw specifications.
1795          */
1796         retval = rt2500usb_probe_hw_mode(rt2x00dev);
1797         if (retval)
1798                 return retval;
1799
1800         /*
1801          * This device requires the atim queue
1802          */
1803         __set_bit(REQUIRE_ATIM_QUEUE, &rt2x00dev->cap_flags);
1804         __set_bit(REQUIRE_BEACON_GUARD, &rt2x00dev->cap_flags);
1805         if (!modparam_nohwcrypt) {
1806                 __set_bit(CAPABILITY_HW_CRYPTO, &rt2x00dev->cap_flags);
1807                 __set_bit(REQUIRE_COPY_IV, &rt2x00dev->cap_flags);
1808         }
1809         __set_bit(REQUIRE_SW_SEQNO, &rt2x00dev->cap_flags);
1810         __set_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags);
1811
1812         /*
1813          * Set the rssi offset.
1814          */
1815         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1816
1817         return 0;
1818 }
1819
1820 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1821         .tx                     = rt2x00mac_tx,
1822         .start                  = rt2x00mac_start,
1823         .stop                   = rt2x00mac_stop,
1824         .add_interface          = rt2x00mac_add_interface,
1825         .remove_interface       = rt2x00mac_remove_interface,
1826         .config                 = rt2x00mac_config,
1827         .configure_filter       = rt2x00mac_configure_filter,
1828         .set_tim                = rt2x00mac_set_tim,
1829         .set_key                = rt2x00mac_set_key,
1830         .sw_scan_start          = rt2x00mac_sw_scan_start,
1831         .sw_scan_complete       = rt2x00mac_sw_scan_complete,
1832         .get_stats              = rt2x00mac_get_stats,
1833         .bss_info_changed       = rt2x00mac_bss_info_changed,
1834         .conf_tx                = rt2x00mac_conf_tx,
1835         .rfkill_poll            = rt2x00mac_rfkill_poll,
1836         .flush                  = rt2x00mac_flush,
1837         .set_antenna            = rt2x00mac_set_antenna,
1838         .get_antenna            = rt2x00mac_get_antenna,
1839         .get_ringparam          = rt2x00mac_get_ringparam,
1840         .tx_frames_pending      = rt2x00mac_tx_frames_pending,
1841 };
1842
1843 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1844         .probe_hw               = rt2500usb_probe_hw,
1845         .initialize             = rt2x00usb_initialize,
1846         .uninitialize           = rt2x00usb_uninitialize,
1847         .clear_entry            = rt2x00usb_clear_entry,
1848         .set_device_state       = rt2500usb_set_device_state,
1849         .rfkill_poll            = rt2500usb_rfkill_poll,
1850         .link_stats             = rt2500usb_link_stats,
1851         .reset_tuner            = rt2500usb_reset_tuner,
1852         .watchdog               = rt2x00usb_watchdog,
1853         .start_queue            = rt2500usb_start_queue,
1854         .kick_queue             = rt2x00usb_kick_queue,
1855         .stop_queue             = rt2500usb_stop_queue,
1856         .flush_queue            = rt2x00usb_flush_queue,
1857         .write_tx_desc          = rt2500usb_write_tx_desc,
1858         .write_beacon           = rt2500usb_write_beacon,
1859         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1860         .fill_rxdone            = rt2500usb_fill_rxdone,
1861         .config_shared_key      = rt2500usb_config_key,
1862         .config_pairwise_key    = rt2500usb_config_key,
1863         .config_filter          = rt2500usb_config_filter,
1864         .config_intf            = rt2500usb_config_intf,
1865         .config_erp             = rt2500usb_config_erp,
1866         .config_ant             = rt2500usb_config_ant,
1867         .config                 = rt2500usb_config,
1868 };
1869
1870 static void rt2500usb_queue_init(struct data_queue *queue)
1871 {
1872         switch (queue->qid) {
1873         case QID_RX:
1874                 queue->limit = 32;
1875                 queue->data_size = DATA_FRAME_SIZE;
1876                 queue->desc_size = RXD_DESC_SIZE;
1877                 queue->priv_size = sizeof(struct queue_entry_priv_usb);
1878                 break;
1879
1880         case QID_AC_VO:
1881         case QID_AC_VI:
1882         case QID_AC_BE:
1883         case QID_AC_BK:
1884                 queue->limit = 32;
1885                 queue->data_size = DATA_FRAME_SIZE;
1886                 queue->desc_size = TXD_DESC_SIZE;
1887                 queue->priv_size = sizeof(struct queue_entry_priv_usb);
1888                 break;
1889
1890         case QID_BEACON:
1891                 queue->limit = 1;
1892                 queue->data_size = MGMT_FRAME_SIZE;
1893                 queue->desc_size = TXD_DESC_SIZE;
1894                 queue->priv_size = sizeof(struct queue_entry_priv_usb_bcn);
1895                 break;
1896
1897         case QID_ATIM:
1898                 queue->limit = 8;
1899                 queue->data_size = DATA_FRAME_SIZE;
1900                 queue->desc_size = TXD_DESC_SIZE;
1901                 queue->priv_size = sizeof(struct queue_entry_priv_usb);
1902                 break;
1903
1904         default:
1905                 BUG();
1906                 break;
1907         }
1908 }
1909
1910 static const struct rt2x00_ops rt2500usb_ops = {
1911         .name                   = KBUILD_MODNAME,
1912         .max_ap_intf            = 1,
1913         .eeprom_size            = EEPROM_SIZE,
1914         .rf_size                = RF_SIZE,
1915         .tx_queues              = NUM_TX_QUEUES,
1916         .queue_init             = rt2500usb_queue_init,
1917         .lib                    = &rt2500usb_rt2x00_ops,
1918         .hw                     = &rt2500usb_mac80211_ops,
1919 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1920         .debugfs                = &rt2500usb_rt2x00debug,
1921 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1922 };
1923
1924 /*
1925  * rt2500usb module information.
1926  */
1927 static struct usb_device_id rt2500usb_device_table[] = {
1928         /* ASUS */
1929         { USB_DEVICE(0x0b05, 0x1706) },
1930         { USB_DEVICE(0x0b05, 0x1707) },
1931         /* Belkin */
1932         { USB_DEVICE(0x050d, 0x7050) }, /* FCC ID: K7SF5D7050A ver. 2.x */
1933         { USB_DEVICE(0x050d, 0x7051) },
1934         /* Cisco Systems */
1935         { USB_DEVICE(0x13b1, 0x000d) },
1936         { USB_DEVICE(0x13b1, 0x0011) },
1937         { USB_DEVICE(0x13b1, 0x001a) },
1938         /* Conceptronic */
1939         { USB_DEVICE(0x14b2, 0x3c02) },
1940         /* D-LINK */
1941         { USB_DEVICE(0x2001, 0x3c00) },
1942         /* Gigabyte */
1943         { USB_DEVICE(0x1044, 0x8001) },
1944         { USB_DEVICE(0x1044, 0x8007) },
1945         /* Hercules */
1946         { USB_DEVICE(0x06f8, 0xe000) },
1947         /* Melco */
1948         { USB_DEVICE(0x0411, 0x005e) },
1949         { USB_DEVICE(0x0411, 0x0066) },
1950         { USB_DEVICE(0x0411, 0x0067) },
1951         { USB_DEVICE(0x0411, 0x008b) },
1952         { USB_DEVICE(0x0411, 0x0097) },
1953         /* MSI */
1954         { USB_DEVICE(0x0db0, 0x6861) },
1955         { USB_DEVICE(0x0db0, 0x6865) },
1956         { USB_DEVICE(0x0db0, 0x6869) },
1957         /* Ralink */
1958         { USB_DEVICE(0x148f, 0x1706) },
1959         { USB_DEVICE(0x148f, 0x2570) },
1960         { USB_DEVICE(0x148f, 0x9020) },
1961         /* Sagem */
1962         { USB_DEVICE(0x079b, 0x004b) },
1963         /* Siemens */
1964         { USB_DEVICE(0x0681, 0x3c06) },
1965         /* SMC */
1966         { USB_DEVICE(0x0707, 0xee13) },
1967         /* Spairon */
1968         { USB_DEVICE(0x114b, 0x0110) },
1969         /* SURECOM */
1970         { USB_DEVICE(0x0769, 0x11f3) },
1971         /* Trust */
1972         { USB_DEVICE(0x0eb0, 0x9020) },
1973         /* VTech */
1974         { USB_DEVICE(0x0f88, 0x3012) },
1975         /* Zinwell */
1976         { USB_DEVICE(0x5a57, 0x0260) },
1977         { 0, }
1978 };
1979
1980 MODULE_AUTHOR(DRV_PROJECT);
1981 MODULE_VERSION(DRV_VERSION);
1982 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1983 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1984 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1985 MODULE_LICENSE("GPL");
1986
1987 static int rt2500usb_probe(struct usb_interface *usb_intf,
1988                            const struct usb_device_id *id)
1989 {
1990         return rt2x00usb_probe(usb_intf, &rt2500usb_ops);
1991 }
1992
1993 static struct usb_driver rt2500usb_driver = {
1994         .name           = KBUILD_MODNAME,
1995         .id_table       = rt2500usb_device_table,
1996         .probe          = rt2500usb_probe,
1997         .disconnect     = rt2x00usb_disconnect,
1998         .suspend        = rt2x00usb_suspend,
1999         .resume         = rt2x00usb_resume,
2000         .reset_resume   = rt2x00usb_resume,
2001         .disable_hub_initiated_lpm = 1,
2002 };
2003
2004 module_usb_driver(rt2500usb_driver);