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, 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/slab.h>
  33 #include <linux/usb.h>
  34
  35 #include "rt2x00.h"
  36 #include "rt2x00usb.h"
  37 #include "rt2500usb.h"
  38
  39 /*
  40  * Allow hardware encryption to be disabled.
  41  */
  42 static int modparam_nohwcrypt;
  43 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
  44 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  45
  46 /*
  47  * Register access.
  48  * All access to the CSR registers will go through the methods
  49  * rt2500usb_register_read and rt2500usb_register_write.
  50  * BBP and RF register require indirect register access,
  51  * and use the CSR registers BBPCSR and RFCSR to achieve this.
  52  * These indirect registers work with busy bits,
  53  * and we will try maximal REGISTER_BUSY_COUNT times to access
  54  * the register while taking a REGISTER_BUSY_DELAY us delay
  55  * between each attampt. When the busy bit is still set at that time,
  56  * the access attempt is considered to have failed,
  57  * and we will print an error.
  58  * If the csr_mutex is already held then the _lock variants must
  59  * be used instead.
  60  */
  61 static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
  62                                            const unsigned int offset,
  63                                            u16 *value)
  64 {
  65         __le16 reg;
  66         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  67                                       USB_VENDOR_REQUEST_IN, offset,
  68                                       &reg, sizeof(reg), REGISTER_TIMEOUT);
  69         *value = le16_to_cpu(reg);
  70 }
  71
  72 static inline void rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
  73                                                 const unsigned int offset,
  74                                                 u16 *value)
  75 {
  76         __le16 reg;
  77         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
  78                                        USB_VENDOR_REQUEST_IN, offset,
  79                                        &reg, sizeof(reg), REGISTER_TIMEOUT);
  80         *value = le16_to_cpu(reg);
  81 }
  82
  83 static inline void rt2500usb_register_multiread(struct rt2x00_dev *rt2x00dev,
  84                                                 const unsigned int offset,
  85                                                 void *value, const u16 length)
  86 {
  87         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  88                                       USB_VENDOR_REQUEST_IN, offset,
  89                                       value, length,
  90                                       REGISTER_TIMEOUT16(length));
  91 }
  92
  93 static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
  94                                             const unsigned int offset,
  95                                             u16 value)
  96 {
  97         __le16 reg = cpu_to_le16(value);
  98         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
  99                                       USB_VENDOR_REQUEST_OUT, offset,
 100                                       &reg, sizeof(reg), REGISTER_TIMEOUT);
 101 }
 102
 103 static inline void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
 104                                                  const unsigned int offset,
 105                                                  u16 value)
 106 {
 107         __le16 reg = cpu_to_le16(value);
 108         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE,
 109                                        USB_VENDOR_REQUEST_OUT, offset,
 110                                        &reg, sizeof(reg), REGISTER_TIMEOUT);
 111 }
 112
 113 static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
 114                                                  const unsigned int offset,
 115                                                  void *value, const u16 length)
 116 {
 117         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
 118                                       USB_VENDOR_REQUEST_OUT, offset,
 119                                       value, length,
 120                                       REGISTER_TIMEOUT16(length));
 121 }
 122
 123 static int rt2500usb_regbusy_read(struct rt2x00_dev *rt2x00dev,
 124                                   const unsigned int offset,
 125                                   struct rt2x00_field16 field,
 126                                   u16 *reg)
 127 {
 128         unsigned int i;
 129
 130         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 131                 rt2500usb_register_read_lock(rt2x00dev, offset, reg);
 132                 if (!rt2x00_get_field16(*reg, field))
 133                         return 1;
 134                 udelay(REGISTER_BUSY_DELAY);
 135         }
 136
 137         ERROR(rt2x00dev, "Indirect register access failed: "
 138               "offset=0x%.08x, value=0x%.08x\n", offset, *reg);
 139         *reg = ~0;
 140
 141         return 0;
 142 }
 143
 144 #define WAIT_FOR_BBP(__dev, __reg) \
 145         rt2500usb_regbusy_read((__dev), PHY_CSR8, PHY_CSR8_BUSY, (__reg))
 146 #define WAIT_FOR_RF(__dev, __reg) \
 147         rt2500usb_regbusy_read((__dev), PHY_CSR10, PHY_CSR10_RF_BUSY, (__reg))
 148
 149 static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
 150                                 const unsigned int word, const u8 value)
 151 {
 152         u16 reg;
 153
 154         mutex_lock(&rt2x00dev->csr_mutex);
 155
 156         /*
 157          * Wait until the BBP becomes available, afterwards we
 158          * can safely write the new data into the register.
 159          */
 160         if (WAIT_FOR_BBP(rt2x00dev, &reg)) {
 161                 reg = 0;
 162                 rt2x00_set_field16(&reg, PHY_CSR7_DATA, value);
 163                 rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 164                 rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 0);
 165
 166                 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
 167         }
 168
 169         mutex_unlock(&rt2x00dev->csr_mutex);
 170 }
 171
 172 static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
 173                                const unsigned int word, u8 *value)
 174 {
 175         u16 reg;
 176
 177         mutex_lock(&rt2x00dev->csr_mutex);
 178
 179         /*
 180          * Wait until the BBP becomes available, afterwards we
 181          * can safely write the read request into the register.
 182          * After the data has been written, we wait until hardware
 183          * returns the correct value, if at any time the register
 184          * doesn't become available in time, reg will be 0xffffffff
 185          * which means we return 0xff to the caller.
 186          */
 187         if (WAIT_FOR_BBP(rt2x00dev, &reg)) {
 188                 reg = 0;
 189                 rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 190                 rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 1);
 191
 192                 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
 193
 194                 if (WAIT_FOR_BBP(rt2x00dev, &reg))
 195                         rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7, &reg);
 196         }
 197
 198         *value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
 199
 200         mutex_unlock(&rt2x00dev->csr_mutex);
 201 }
 202
 203 static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev,
 204                                const unsigned int word, const u32 value)
 205 {
 206         u16 reg;
 207
 208         mutex_lock(&rt2x00dev->csr_mutex);
 209
 210         /*
 211          * Wait until the RF becomes available, afterwards we
 212          * can safely write the new data into the register.
 213          */
 214         if (WAIT_FOR_RF(rt2x00dev, &reg)) {
 215                 reg = 0;
 216                 rt2x00_set_field16(&reg, PHY_CSR9_RF_VALUE, value);
 217                 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR9, reg);
 218
 219                 reg = 0;
 220                 rt2x00_set_field16(&reg, PHY_CSR10_RF_VALUE, value >> 16);
 221                 rt2x00_set_field16(&reg, PHY_CSR10_RF_NUMBER_OF_BITS, 20);
 222                 rt2x00_set_field16(&reg, PHY_CSR10_RF_IF_SELECT, 0);
 223                 rt2x00_set_field16(&reg, PHY_CSR10_RF_BUSY, 1);
 224
 225                 rt2500usb_register_write_lock(rt2x00dev, PHY_CSR10, reg);
 226                 rt2x00_rf_write(rt2x00dev, word, value);
 227         }
 228
 229         mutex_unlock(&rt2x00dev->csr_mutex);
 230 }
 231
 232 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 233 static void _rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
 234                                      const unsigned int offset,
 235                                      u32 *value)
 236 {
 237         rt2500usb_register_read(rt2x00dev, offset, (u16 *)value);
 238 }
 239
 240 static void _rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
 241                                       const unsigned int offset,
 242                                       u32 value)
 243 {
 244         rt2500usb_register_write(rt2x00dev, offset, value);
 245 }
 246
 247 static const struct rt2x00debug rt2500usb_rt2x00debug = {
 248         .owner  = THIS_MODULE,
 249         .csr    = {
 250                 .read           = _rt2500usb_register_read,
 251                 .write          = _rt2500usb_register_write,
 252                 .flags          = RT2X00DEBUGFS_OFFSET,
 253                 .word_base      = CSR_REG_BASE,
 254                 .word_size      = sizeof(u16),
 255                 .word_count     = CSR_REG_SIZE / sizeof(u16),
 256         },
 257         .eeprom = {
 258                 .read           = rt2x00_eeprom_read,
 259                 .write          = rt2x00_eeprom_write,
 260                 .word_base      = EEPROM_BASE,
 261                 .word_size      = sizeof(u16),
 262                 .word_count     = EEPROM_SIZE / sizeof(u16),
 263         },
 264         .bbp    = {
 265                 .read           = rt2500usb_bbp_read,
 266                 .write          = rt2500usb_bbp_write,
 267                 .word_base      = BBP_BASE,
 268                 .word_size      = sizeof(u8),
 269                 .word_count     = BBP_SIZE / sizeof(u8),
 270         },
 271         .rf     = {
 272                 .read           = rt2x00_rf_read,
 273                 .write          = rt2500usb_rf_write,
 274                 .word_base      = RF_BASE,
 275                 .word_size      = sizeof(u32),
 276                 .word_count     = RF_SIZE / sizeof(u32),
 277         },
 278 };
 279 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 280
 281 static int rt2500usb_rfkill_poll(struct rt2x00_dev *rt2x00dev)
 282 {
 283         u16 reg;
 284
 285         rt2500usb_register_read(rt2x00dev, MAC_CSR19, &reg);
 286         return rt2x00_get_field32(reg, MAC_CSR19_BIT7);
 287 }
 288
 289 #ifdef CONFIG_RT2X00_LIB_LEDS
 290 static void rt2500usb_brightness_set(struct led_classdev *led_cdev,
 291                                      enum led_brightness brightness)
 292 {
 293         struct rt2x00_led *led =
 294             container_of(led_cdev, struct rt2x00_led, led_dev);
 295         unsigned int enabled = brightness != LED_OFF;
 296         u16 reg;
 297
 298         rt2500usb_register_read(led->rt2x00dev, MAC_CSR20, &reg);
 299
 300         if (led->type == LED_TYPE_RADIO || led->type == LED_TYPE_ASSOC)
 301                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, enabled);
 302         else if (led->type == LED_TYPE_ACTIVITY)
 303                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, enabled);
 304
 305         rt2500usb_register_write(led->rt2x00dev, MAC_CSR20, reg);
 306 }
 307
 308 static int rt2500usb_blink_set(struct led_classdev *led_cdev,
 309                                unsigned long *delay_on,
 310                                unsigned long *delay_off)
 311 {
 312         struct rt2x00_led *led =
 313             container_of(led_cdev, struct rt2x00_led, led_dev);
 314         u16 reg;
 315
 316         rt2500usb_register_read(led->rt2x00dev, MAC_CSR21, &reg);
 317         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, *delay_on);
 318         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, *delay_off);
 319         rt2500usb_register_write(led->rt2x00dev, MAC_CSR21, reg);
 320
 321         return 0;
 322 }
 323
 324 static void rt2500usb_init_led(struct rt2x00_dev *rt2x00dev,
 325                                struct rt2x00_led *led,
 326                                enum led_type type)
 327 {
 328         led->rt2x00dev = rt2x00dev;
 329         led->type = type;
 330         led->led_dev.brightness_set = rt2500usb_brightness_set;
 331         led->led_dev.blink_set = rt2500usb_blink_set;
 332         led->flags = LED_INITIALIZED;
 333 }
 334 #endif /* CONFIG_RT2X00_LIB_LEDS */
 335
 336 /*
 337  * Configuration handlers.
 338  */
 339
 340 /*
 341  * rt2500usb does not differentiate between shared and pairwise
 342  * keys, so we should use the same function for both key types.
 343  */
 344 static int rt2500usb_config_key(struct rt2x00_dev *rt2x00dev,
 345                                 struct rt2x00lib_crypto *crypto,
 346                                 struct ieee80211_key_conf *key)
 347 {
 348         u32 mask;
 349         u16 reg;
 350         enum cipher curr_cipher;
 351
 352         if (crypto->cmd == SET_KEY) {
 353                 /*
 354                  * Disallow to set WEP key other than with index 0,
 355                  * it is known that not work at least on some hardware.
 356                  * SW crypto will be used in that case.
 357                  */
 358                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 359                      key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 360                     key->keyidx != 0)
 361                         return -EOPNOTSUPP;
 362
 363                 /*
 364                  * Pairwise key will always be entry 0, but this
 365                  * could collide with a shared key on the same
 366                  * position...
 367                  */
 368                 mask = TXRX_CSR0_KEY_ID.bit_mask;
 369
 370                 rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 371                 curr_cipher = rt2x00_get_field16(reg, TXRX_CSR0_ALGORITHM);
 372                 reg &= mask;
 373
 374                 if (reg && reg == mask)
 375                         return -ENOSPC;
 376
 377                 reg = rt2x00_get_field16(reg, TXRX_CSR0_KEY_ID);
 378
 379                 key->hw_key_idx += reg ? ffz(reg) : 0;
 380                 /*
 381                  * Hardware requires that all keys use the same cipher
 382                  * (e.g. TKIP-only, AES-only, but not TKIP+AES).
 383                  * If this is not the first key, compare the cipher with the
 384                  * first one and fall back to SW crypto if not the same.
 385                  */
 386                 if (key->hw_key_idx > 0 && crypto->cipher != curr_cipher)
 387                         return -EOPNOTSUPP;
 388
 389                 rt2500usb_register_multiwrite(rt2x00dev, KEY_ENTRY(key->hw_key_idx),
 390                                               crypto->key, sizeof(crypto->key));
 391
 392                 /*
 393                  * The driver does not support the IV/EIV generation
 394                  * in hardware. However it demands the data to be provided
 395                  * both separately as well as inside the frame.
 396                  * We already provided the CONFIG_CRYPTO_COPY_IV to rt2x00lib
 397                  * to ensure rt2x00lib will not strip the data from the
 398                  * frame after the copy, now we must tell mac80211
 399                  * to generate the IV/EIV data.
 400                  */
 401                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
 402                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
 403         }
 404
 405         /*
 406          * TXRX_CSR0_KEY_ID contains only single-bit fields to indicate
 407          * a particular key is valid.
 408          */
 409         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 410         rt2x00_set_field16(&reg, TXRX_CSR0_ALGORITHM, crypto->cipher);
 411         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 412
 413         mask = rt2x00_get_field16(reg, TXRX_CSR0_KEY_ID);
 414         if (crypto->cmd == SET_KEY)
 415                 mask |= 1 << key->hw_key_idx;
 416         else if (crypto->cmd == DISABLE_KEY)
 417                 mask &= ~(1 << key->hw_key_idx);
 418         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, mask);
 419         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 420
 421         return 0;
 422 }
 423
 424 static void rt2500usb_config_filter(struct rt2x00_dev *rt2x00dev,
 425                                     const unsigned int filter_flags)
 426 {
 427         u16 reg;
 428
 429         /*
 430          * Start configuration steps.
 431          * Note that the version error will always be dropped
 432          * and broadcast frames will always be accepted since
 433          * there is no filter for it at this time.
 434          */
 435         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 436         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
 437                            !(filter_flags & FIF_FCSFAIL));
 438         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
 439                            !(filter_flags & FIF_PLCPFAIL));
 440         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
 441                            !(filter_flags & FIF_CONTROL));
 442         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
 443                            !(filter_flags & FIF_PROMISC_IN_BSS));
 444         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
 445                            !(filter_flags & FIF_PROMISC_IN_BSS) &&
 446                            !rt2x00dev->intf_ap_count);
 447         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
 448         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
 449                            !(filter_flags & FIF_ALLMULTI));
 450         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
 451         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 452 }
 453
 454 static void rt2500usb_config_intf(struct rt2x00_dev *rt2x00dev,
 455                                   struct rt2x00_intf *intf,
 456                                   struct rt2x00intf_conf *conf,
 457                                   const unsigned int flags)
 458 {
 459         unsigned int bcn_preload;
 460         u16 reg;
 461
 462         if (flags & CONFIG_UPDATE_TYPE) {
 463                 /*
 464                  * Enable beacon config
 465                  */
 466                 bcn_preload = PREAMBLE + GET_DURATION(IEEE80211_HEADER, 20);
 467                 rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
 468                 rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET, bcn_preload >> 6);
 469                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW,
 470                                    2 * (conf->type != NL80211_IFTYPE_STATION));
 471                 rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
 472
 473                 /*
 474                  * Enable synchronisation.
 475                  */
 476                 rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 477                 rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
 478                 rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 479
 480                 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 481                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, conf->sync);
 482                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 483         }
 484
 485         if (flags & CONFIG_UPDATE_MAC)
 486                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, conf->mac,
 487                                               (3 * sizeof(__le16)));
 488
 489         if (flags & CONFIG_UPDATE_BSSID)
 490                 rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, conf->bssid,
 491                                               (3 * sizeof(__le16)));
 492 }
 493
 494 static void rt2500usb_config_erp(struct rt2x00_dev *rt2x00dev,
 495                                  struct rt2x00lib_erp *erp,
 496                                  u32 changed)
 497 {
 498         u16 reg;
 499
 500         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 501                 rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
 502                 rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
 503                                    !!erp->short_preamble);
 504                 rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
 505         }
 506
 507         if (changed & BSS_CHANGED_BASIC_RATES)
 508                 rt2500usb_register_write(rt2x00dev, TXRX_CSR11,
 509                                          erp->basic_rates);
 510
 511         if (changed & BSS_CHANGED_BEACON_INT) {
 512                 rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 513                 rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL,
 514                                    erp->beacon_int * 4);
 515                 rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 516         }
 517
 518         if (changed & BSS_CHANGED_ERP_SLOT) {
 519                 rt2500usb_register_write(rt2x00dev, MAC_CSR10, erp->slot_time);
 520                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, erp->sifs);
 521                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, erp->eifs);
 522         }
 523 }
 524
 525 static void rt2500usb_config_ant(struct rt2x00_dev *rt2x00dev,
 526                                  struct antenna_setup *ant)
 527 {
 528         u8 r2;
 529         u8 r14;
 530         u16 csr5;
 531         u16 csr6;
 532
 533         /*
 534          * We should never come here because rt2x00lib is supposed
 535          * to catch this and send us the correct antenna explicitely.
 536          */
 537         BUG_ON(ant->rx == ANTENNA_SW_DIVERSITY ||
 538                ant->tx == ANTENNA_SW_DIVERSITY);
 539
 540         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
 541         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
 542         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
 543         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
 544
 545         /*
 546          * Configure the TX antenna.
 547          */
 548         switch (ant->tx) {
 549         case ANTENNA_HW_DIVERSITY:
 550                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
 551                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
 552                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
 553                 break;
 554         case ANTENNA_A:
 555                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
 556                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
 557                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
 558                 break;
 559         case ANTENNA_B:
 560         default:
 561                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
 562                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
 563                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
 564                 break;
 565         }
 566
 567         /*
 568          * Configure the RX antenna.
 569          */
 570         switch (ant->rx) {
 571         case ANTENNA_HW_DIVERSITY:
 572                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
 573                 break;
 574         case ANTENNA_A:
 575                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
 576                 break;
 577         case ANTENNA_B:
 578         default:
 579                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
 580                 break;
 581         }
 582
 583         /*
 584          * RT2525E and RT5222 need to flip TX I/Q
 585          */
 586         if (rt2x00_rf(rt2x00dev, RF2525E) || rt2x00_rf(rt2x00dev, RF5222)) {
 587                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
 588                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
 589                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
 590
 591                 /*
 592                  * RT2525E does not need RX I/Q Flip.
 593                  */
 594                 if (rt2x00_rf(rt2x00dev, RF2525E))
 595                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
 596         } else {
 597                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
 598                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
 599         }
 600
 601         rt2500usb_bbp_write(rt2x00dev, 2, r2);
 602         rt2500usb_bbp_write(rt2x00dev, 14, r14);
 603         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
 604         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
 605 }
 606
 607 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
 608                                      struct rf_channel *rf, const int txpower)
 609 {
 610         /*
 611          * Set TXpower.
 612          */
 613         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 614
 615         /*
 616          * For RT2525E we should first set the channel to half band higher.
 617          */
 618         if (rt2x00_rf(rt2x00dev, RF2525E)) {
 619                 static const u32 vals[] = {
 620                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
 621                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
 622                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
 623                         0x00000902, 0x00000906
 624                 };
 625
 626                 rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
 627                 if (rf->rf4)
 628                         rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
 629         }
 630
 631         rt2500usb_rf_write(rt2x00dev, 1, rf->rf1);
 632         rt2500usb_rf_write(rt2x00dev, 2, rf->rf2);
 633         rt2500usb_rf_write(rt2x00dev, 3, rf->rf3);
 634         if (rf->rf4)
 635                 rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
 636 }
 637
 638 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
 639                                      const int txpower)
 640 {
 641         u32 rf3;
 642
 643         rt2x00_rf_read(rt2x00dev, 3, &rf3);
 644         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 645         rt2500usb_rf_write(rt2x00dev, 3, rf3);
 646 }
 647
 648 static void rt2500usb_config_ps(struct rt2x00_dev *rt2x00dev,
 649                                 struct rt2x00lib_conf *libconf)
 650 {
 651         enum dev_state state =
 652             (libconf->conf->flags & IEEE80211_CONF_PS) ?
 653                 STATE_SLEEP : STATE_AWAKE;
 654         u16 reg;
 655
 656         if (state == STATE_SLEEP) {
 657                 rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 658                 rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON,
 659                                    rt2x00dev->beacon_int - 20);
 660                 rt2x00_set_field16(&reg, MAC_CSR18_BEACONS_BEFORE_WAKEUP,
 661                                    libconf->conf->listen_interval - 1);
 662
 663                 /* We must first disable autowake before it can be enabled */
 664                 rt2x00_set_field16(&reg, MAC_CSR18_AUTO_WAKE, 0);
 665                 rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 666
 667                 rt2x00_set_field16(&reg, MAC_CSR18_AUTO_WAKE, 1);
 668                 rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 669         } else {
 670                 rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 671                 rt2x00_set_field16(&reg, MAC_CSR18_AUTO_WAKE, 0);
 672                 rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 673         }
 674
 675         rt2x00dev->ops->lib->set_device_state(rt2x00dev, state);
 676 }
 677
 678 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
 679                              struct rt2x00lib_conf *libconf,
 680                              const unsigned int flags)
 681 {
 682         if (flags & IEEE80211_CONF_CHANGE_CHANNEL)
 683                 rt2500usb_config_channel(rt2x00dev, &libconf->rf,
 684                                          libconf->conf->power_level);
 685         if ((flags & IEEE80211_CONF_CHANGE_POWER) &&
 686             !(flags & IEEE80211_CONF_CHANGE_CHANNEL))
 687                 rt2500usb_config_txpower(rt2x00dev,
 688                                          libconf->conf->power_level);
 689         if (flags & IEEE80211_CONF_CHANGE_PS)
 690                 rt2500usb_config_ps(rt2x00dev, libconf);
 691 }
 692
 693 /*
 694  * Link tuning
 695  */
 696 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
 697                                  struct link_qual *qual)
 698 {
 699         u16 reg;
 700
 701         /*
 702          * Update FCS error count from register.
 703          */
 704         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
 705         qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
 706
 707         /*
 708          * Update False CCA count from register.
 709          */
 710         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
 711         qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
 712 }
 713
 714 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev,
 715                                   struct link_qual *qual)
 716 {
 717         u16 eeprom;
 718         u16 value;
 719
 720         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
 721         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
 722         rt2500usb_bbp_write(rt2x00dev, 24, value);
 723
 724         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
 725         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
 726         rt2500usb_bbp_write(rt2x00dev, 25, value);
 727
 728         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
 729         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
 730         rt2500usb_bbp_write(rt2x00dev, 61, value);
 731
 732         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
 733         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
 734         rt2500usb_bbp_write(rt2x00dev, 17, value);
 735
 736         qual->vgc_level = value;
 737 }
 738
 739 /*
 740  * Queue handlers.
 741  */
 742 static void rt2500usb_start_queue(struct data_queue *queue)
 743 {
 744         struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
 745         u16 reg;
 746
 747         switch (queue->qid) {
 748         case QID_RX:
 749                 rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 750                 rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 0);
 751                 rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 752                 break;
 753         case QID_BEACON:
 754                 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 755                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
 756                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
 757                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
 758                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 759                 break;
 760         default:
 761                 break;
 762         }
 763 }
 764
 765 static void rt2500usb_stop_queue(struct data_queue *queue)
 766 {
 767         struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
 768         u16 reg;
 769
 770         switch (queue->qid) {
 771         case QID_RX:
 772                 rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 773                 rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 774                 rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 775                 break;
 776         case QID_BEACON:
 777                 rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 778                 rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
 779                 rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
 780                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
 781                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 782                 break;
 783         default:
 784                 break;
 785         }
 786 }
 787
 788 /*
 789  * Initialization functions.
 790  */
 791 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
 792 {
 793         u16 reg;
 794
 795         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
 796                                     USB_MODE_TEST, REGISTER_TIMEOUT);
 797         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
 798                                     0x00f0, REGISTER_TIMEOUT);
 799
 800         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 801         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 802         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 803
 804         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
 805         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
 806
 807         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 808         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
 809         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
 810         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 811         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 812
 813         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 814         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 815         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 816         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 817         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 818
 819         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
 820         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
 821         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
 822         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
 823         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
 824         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
 825
 826         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
 827         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
 828         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
 829         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
 830         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
 831         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
 832
 833         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 834         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
 835         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
 836         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
 837         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
 838         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 839
 840         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 841         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
 842         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
 843         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
 844         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
 845         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 846
 847         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 848         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 0);
 849         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, 0);
 850         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 0);
 851         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
 852         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 853
 854         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
 855         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
 856
 857         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 858                 return -EBUSY;
 859
 860         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 861         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 862         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 863         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
 864         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 865
 866         if (rt2x00_rev(rt2x00dev) >= RT2570_VERSION_C) {
 867                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
 868                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 0);
 869         } else {
 870                 reg = 0;
 871                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 1);
 872                 rt2x00_set_field16(&reg, PHY_CSR2_LNA_MODE, 3);
 873         }
 874         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
 875
 876         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
 877         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
 878         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
 879         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
 880
 881         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 882         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
 883                            rt2x00dev->rx->data_size);
 884         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
 885
 886         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 887         rt2x00_set_field16(&reg, TXRX_CSR0_ALGORITHM, CIPHER_NONE);
 888         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 889         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0);
 890         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 891
 892         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 893         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
 894         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 895
 896         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
 897         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
 898         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
 899
 900         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 901         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
 902         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 903
 904         return 0;
 905 }
 906
 907 static int rt2500usb_wait_bbp_ready(struct rt2x00_dev *rt2x00dev)
 908 {
 909         unsigned int i;
 910         u8 value;
 911
 912         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 913                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
 914                 if ((value != 0xff) && (value != 0x00))
 915                         return 0;
 916                 udelay(REGISTER_BUSY_DELAY);
 917         }
 918
 919         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
 920         return -EACCES;
 921 }
 922
 923 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
 924 {
 925         unsigned int i;
 926         u16 eeprom;
 927         u8 value;
 928         u8 reg_id;
 929
 930         if (unlikely(rt2500usb_wait_bbp_ready(rt2x00dev)))
 931                 return -EACCES;
 932
 933         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
 934         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
 935         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
 936         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
 937         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
 938         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
 939         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
 940         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
 941         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
 942         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
 943         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
 944         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
 945         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
 946         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
 947         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
 948         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
 949         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
 950         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
 951         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
 952         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
 953         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
 954         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
 955         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
 956         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
 957         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
 958         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
 959         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
 960         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
 961         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
 962         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
 963         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
 964
 965         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 966                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 967
 968                 if (eeprom != 0xffff && eeprom != 0x0000) {
 969                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 970                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 971                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
 972                 }
 973         }
 974
 975         return 0;
 976 }
 977
 978 /*
 979  * Device state switch handlers.
 980  */
 981 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
 982 {
 983         /*
 984          * Initialize all registers.
 985          */
 986         if (unlikely(rt2500usb_init_registers(rt2x00dev) ||
 987                      rt2500usb_init_bbp(rt2x00dev)))
 988                 return -EIO;
 989
 990         return 0;
 991 }
 992
 993 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
 994 {
 995         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
 996         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
 997
 998         /*
 999          * Disable synchronisation.
1000          */
1001         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1002
1003         rt2x00usb_disable_radio(rt2x00dev);
1004 }
1005
1006 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
1007                                enum dev_state state)
1008 {
1009         u16 reg;
1010         u16 reg2;
1011         unsigned int i;
1012         char put_to_sleep;
1013         char bbp_state;
1014         char rf_state;
1015
1016         put_to_sleep = (state != STATE_AWAKE);
1017
1018         reg = 0;
1019         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
1020         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
1021         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
1022         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1023         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
1024         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1025
1026         /*
1027          * Device is not guaranteed to be in the requested state yet.
1028          * We must wait until the register indicates that the
1029          * device has entered the correct state.
1030          */
1031         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
1032                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
1033                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
1034                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
1035                 if (bbp_state == state && rf_state == state)
1036                         return 0;
1037                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
1038                 msleep(30);
1039         }
1040
1041         return -EBUSY;
1042 }
1043
1044 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
1045                                       enum dev_state state)
1046 {
1047         int retval = 0;
1048
1049         switch (state) {
1050         case STATE_RADIO_ON:
1051                 retval = rt2500usb_enable_radio(rt2x00dev);
1052                 break;
1053         case STATE_RADIO_OFF:
1054                 rt2500usb_disable_radio(rt2x00dev);
1055                 break;
1056         case STATE_RADIO_IRQ_ON:
1057         case STATE_RADIO_IRQ_OFF:
1058                 /* No support, but no error either */
1059                 break;
1060         case STATE_DEEP_SLEEP:
1061         case STATE_SLEEP:
1062         case STATE_STANDBY:
1063         case STATE_AWAKE:
1064                 retval = rt2500usb_set_state(rt2x00dev, state);
1065                 break;
1066         default:
1067                 retval = -ENOTSUPP;
1068                 break;
1069         }
1070
1071         if (unlikely(retval))
1072                 ERROR(rt2x00dev, "Device failed to enter state %d (%d).\n",
1073                       state, retval);
1074
1075         return retval;
1076 }
1077
1078 /*
1079  * TX descriptor initialization
1080  */
1081 static void rt2500usb_write_tx_desc(struct queue_entry *entry,
1082                                     struct txentry_desc *txdesc)
1083 {
1084         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1085         __le32 *txd = (__le32 *) entry->skb->data;
1086         u32 word;
1087
1088         /*
1089          * Start writing the descriptor words.
1090          */
1091         rt2x00_desc_read(txd, 0, &word);
1092         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, txdesc->retry_limit);
1093         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1094                            test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
1095         rt2x00_set_field32(&word, TXD_W0_ACK,
1096                            test_bit(ENTRY_TXD_ACK, &txdesc->flags));
1097         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1098                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
1099         rt2x00_set_field32(&word, TXD_W0_OFDM,
1100                            (txdesc->rate_mode == RATE_MODE_OFDM));
1101         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1102                            test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags));
1103         rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->u.plcp.ifs);
1104         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, txdesc->length);
1105         rt2x00_set_field32(&word, TXD_W0_CIPHER, !!txdesc->cipher);
1106         rt2x00_set_field32(&word, TXD_W0_KEY_ID, txdesc->key_idx);
1107         rt2x00_desc_write(txd, 0, word);
1108
1109         rt2x00_desc_read(txd, 1, &word);
1110         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, txdesc->iv_offset);
1111         rt2x00_set_field32(&word, TXD_W1_AIFS, entry->queue->aifs);
1112         rt2x00_set_field32(&word, TXD_W1_CWMIN, entry->queue->cw_min);
1113         rt2x00_set_field32(&word, TXD_W1_CWMAX, entry->queue->cw_max);
1114         rt2x00_desc_write(txd, 1, word);
1115
1116         rt2x00_desc_read(txd, 2, &word);
1117         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->u.plcp.signal);
1118         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->u.plcp.service);
1119         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW,
1120                            txdesc->u.plcp.length_low);
1121         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH,
1122                            txdesc->u.plcp.length_high);
1123         rt2x00_desc_write(txd, 2, word);
1124
1125         if (test_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags)) {
1126                 _rt2x00_desc_write(txd, 3, skbdesc->iv[0]);
1127                 _rt2x00_desc_write(txd, 4, skbdesc->iv[1]);
1128         }
1129
1130         /*
1131          * Register descriptor details in skb frame descriptor.
1132          */
1133         skbdesc->flags |= SKBDESC_DESC_IN_SKB;
1134         skbdesc->desc = txd;
1135         skbdesc->desc_len = TXD_DESC_SIZE;
1136 }
1137
1138 /*
1139  * TX data initialization
1140  */
1141 static void rt2500usb_beacondone(struct urb *urb);
1142
1143 static void rt2500usb_write_beacon(struct queue_entry *entry,
1144                                    struct txentry_desc *txdesc)
1145 {
1146         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
1147         struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev);
1148         struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
1149         int pipe = usb_sndbulkpipe(usb_dev, entry->queue->usb_endpoint);
1150         int length;
1151         u16 reg, reg0;
1152
1153         /*
1154          * Disable beaconing while we are reloading the beacon data,
1155          * otherwise we might be sending out invalid data.
1156          */
1157         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1158         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
1159         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1160
1161         /*
1162          * Add space for the descriptor in front of the skb.
1163          */
1164         skb_push(entry->skb, TXD_DESC_SIZE);
1165         memset(entry->skb->data, 0, TXD_DESC_SIZE);
1166
1167         /*
1168          * Write the TX descriptor for the beacon.
1169          */
1170         rt2500usb_write_tx_desc(entry, txdesc);
1171
1172         /*
1173          * Dump beacon to userspace through debugfs.
1174          */
1175         rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_BEACON, entry->skb);
1176
1177         /*
1178          * USB devices cannot blindly pass the skb->len as the
1179          * length of the data to usb_fill_bulk_urb. Pass the skb
1180          * to the driver to determine what the length should be.
1181          */
1182         length = rt2x00dev->ops->lib->get_tx_data_len(entry);
1183
1184         usb_fill_bulk_urb(bcn_priv->urb, usb_dev, pipe,
1185                           entry->skb->data, length, rt2500usb_beacondone,
1186                           entry);
1187
1188         /*
1189          * Second we need to create the guardian byte.
1190          * We only need a single byte, so lets recycle
1191          * the 'flags' field we are not using for beacons.
1192          */
1193         bcn_priv->guardian_data = 0;
1194         usb_fill_bulk_urb(bcn_priv->guardian_urb, usb_dev, pipe,
1195                           &bcn_priv->guardian_data, 1, rt2500usb_beacondone,
1196                           entry);
1197
1198         /*
1199          * Send out the guardian byte.
1200          */
1201         usb_submit_urb(bcn_priv->guardian_urb, GFP_ATOMIC);
1202
1203         /*
1204          * Enable beaconing again.
1205          */
1206         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
1207         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
1208         reg0 = reg;
1209         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1210         /*
1211          * Beacon generation will fail initially.
1212          * To prevent this we need to change the TXRX_CSR19
1213          * register several times (reg0 is the same as reg
1214          * except for TXRX_CSR19_BEACON_GEN, which is 0 in reg0
1215          * and 1 in reg).
1216          */
1217         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1218         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg0);
1219         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1220         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg0);
1221         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1222 }
1223
1224 static int rt2500usb_get_tx_data_len(struct queue_entry *entry)
1225 {
1226         int length;
1227
1228         /*
1229          * The length _must_ be a multiple of 2,
1230          * but it must _not_ be a multiple of the USB packet size.
1231          */
1232         length = roundup(entry->skb->len, 2);
1233         length += (2 * !(length % entry->queue->usb_maxpacket));
1234
1235         return length;
1236 }
1237
1238 /*
1239  * RX control handlers
1240  */
1241 static void rt2500usb_fill_rxdone(struct queue_entry *entry,
1242                                   struct rxdone_entry_desc *rxdesc)
1243 {
1244         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
1245         struct queue_entry_priv_usb *entry_priv = entry->priv_data;
1246         struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
1247         __le32 *rxd =
1248             (__le32 *)(entry->skb->data +
1249                        (entry_priv->urb->actual_length -
1250                         entry->queue->desc_size));
1251         u32 word0;
1252         u32 word1;
1253
1254         /*
1255          * Copy descriptor to the skbdesc->desc buffer, making it safe from moving of
1256          * frame data in rt2x00usb.
1257          */
1258         memcpy(skbdesc->desc, rxd, skbdesc->desc_len);
1259         rxd = (__le32 *)skbdesc->desc;
1260
1261         /*
1262          * It is now safe to read the descriptor on all architectures.
1263          */
1264         rt2x00_desc_read(rxd, 0, &word0);
1265         rt2x00_desc_read(rxd, 1, &word1);
1266
1267         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1268                 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
1269         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1270                 rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1271
1272         rxdesc->cipher = rt2x00_get_field32(word0, RXD_W0_CIPHER);
1273         if (rt2x00_get_field32(word0, RXD_W0_CIPHER_ERROR))
1274                 rxdesc->cipher_status = RX_CRYPTO_FAIL_KEY;
1275
1276         if (rxdesc->cipher != CIPHER_NONE) {
1277                 _rt2x00_desc_read(rxd, 2, &rxdesc->iv[0]);
1278                 _rt2x00_desc_read(rxd, 3, &rxdesc->iv[1]);
1279                 rxdesc->dev_flags |= RXDONE_CRYPTO_IV;
1280
1281                 /* ICV is located at the end of frame */
1282
1283                 rxdesc->flags |= RX_FLAG_MMIC_STRIPPED;
1284                 if (rxdesc->cipher_status == RX_CRYPTO_SUCCESS)
1285                         rxdesc->flags |= RX_FLAG_DECRYPTED;
1286                 else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC)
1287                         rxdesc->flags |= RX_FLAG_MMIC_ERROR;
1288         }
1289
1290         /*
1291          * Obtain the status about this packet.
1292          * When frame was received with an OFDM bitrate,
1293          * the signal is the PLCP value. If it was received with
1294          * a CCK bitrate the signal is the rate in 100kbit/s.
1295          */
1296         rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1297         rxdesc->rssi =
1298             rt2x00_get_field32(word1, RXD_W1_RSSI) - rt2x00dev->rssi_offset;
1299         rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1300
1301         if (rt2x00_get_field32(word0, RXD_W0_OFDM))
1302                 rxdesc->dev_flags |= RXDONE_SIGNAL_PLCP;
1303         else
1304                 rxdesc->dev_flags |= RXDONE_SIGNAL_BITRATE;
1305         if (rt2x00_get_field32(word0, RXD_W0_MY_BSS))
1306                 rxdesc->dev_flags |= RXDONE_MY_BSS;
1307
1308         /*
1309          * Adjust the skb memory window to the frame boundaries.
1310          */
1311         skb_trim(entry->skb, rxdesc->size);
1312 }
1313
1314 /*
1315  * Interrupt functions.
1316  */
1317 static void rt2500usb_beacondone(struct urb *urb)
1318 {
1319         struct queue_entry *entry = (struct queue_entry *)urb->context;
1320         struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
1321
1322         if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags))
1323                 return;
1324
1325         /*
1326          * Check if this was the guardian beacon,
1327          * if that was the case we need to send the real beacon now.
1328          * Otherwise we should free the sk_buffer, the device
1329          * should be doing the rest of the work now.
1330          */
1331         if (bcn_priv->guardian_urb == urb) {
1332                 usb_submit_urb(bcn_priv->urb, GFP_ATOMIC);
1333         } else if (bcn_priv->urb == urb) {
1334                 dev_kfree_skb(entry->skb);
1335                 entry->skb = NULL;
1336         }
1337 }
1338
1339 /*
1340  * Device probe functions.
1341  */
1342 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1343 {
1344         u16 word;
1345         u8 *mac;
1346         u8 bbp;
1347
1348         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1349
1350         /*
1351          * Start validation of the data that has been read.
1352          */
1353         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1354         if (!is_valid_ether_addr(mac)) {
1355                 random_ether_addr(mac);
1356                 EEPROM(rt2x00dev, "MAC: %pM\n", mac);
1357         }
1358
1359         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1360         if (word == 0xffff) {
1361                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1362                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1363                                    ANTENNA_SW_DIVERSITY);
1364                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1365                                    ANTENNA_SW_DIVERSITY);
1366                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1367                                    LED_MODE_DEFAULT);
1368                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1369                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1370                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1371                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1372                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1373         }
1374
1375         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1376         if (word == 0xffff) {
1377                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1378                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1379                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1380                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1381                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1382         }
1383
1384         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1385         if (word == 0xffff) {
1386                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1387                                    DEFAULT_RSSI_OFFSET);
1388                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1389                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1390         }
1391
1392         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1393         if (word == 0xffff) {
1394                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1395                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1396                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1397         }
1398
1399         /*
1400          * Switch lower vgc bound to current BBP R17 value,
1401          * lower the value a bit for better quality.
1402          */
1403         rt2500usb_bbp_read(rt2x00dev, 17, &bbp);
1404         bbp -= 6;
1405
1406         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1407         if (word == 0xffff) {
1408                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1409                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1410                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1411                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1412         } else {
1413                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCLOWER, bbp);
1414                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1415         }
1416
1417         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1418         if (word == 0xffff) {
1419                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1420                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1421                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1422                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1423         }
1424
1425         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1426         if (word == 0xffff) {
1427                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1428                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1429                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1430                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1431         }
1432
1433         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1434         if (word == 0xffff) {
1435                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1436                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1437                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1438                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1439         }
1440
1441         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1442         if (word == 0xffff) {
1443                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1444                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1445                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1446                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1447         }
1448
1449         return 0;
1450 }
1451
1452 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1453 {
1454         u16 reg;
1455         u16 value;
1456         u16 eeprom;
1457
1458         /*
1459          * Read EEPROM word for configuration.
1460          */
1461         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1462
1463         /*
1464          * Identify RF chipset.
1465          */
1466         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1467         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1468         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1469
1470         if (((reg & 0xfff0) != 0) || ((reg & 0x0000000f) == 0)) {
1471                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1472                 return -ENODEV;
1473         }
1474
1475         if (!rt2x00_rf(rt2x00dev, RF2522) &&
1476             !rt2x00_rf(rt2x00dev, RF2523) &&
1477             !rt2x00_rf(rt2x00dev, RF2524) &&
1478             !rt2x00_rf(rt2x00dev, RF2525) &&
1479             !rt2x00_rf(rt2x00dev, RF2525E) &&
1480             !rt2x00_rf(rt2x00dev, RF5222)) {
1481                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1482                 return -ENODEV;
1483         }
1484
1485         /*
1486          * Identify default antenna configuration.
1487          */
1488         rt2x00dev->default_ant.tx =
1489             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1490         rt2x00dev->default_ant.rx =
1491             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1492
1493         /*
1494          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1495          * I am not 100% sure about this, but the legacy drivers do not
1496          * indicate antenna swapping in software is required when
1497          * diversity is enabled.
1498          */
1499         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1500                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1501         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1502                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1503
1504         /*
1505          * Store led mode, for correct led behaviour.
1506          */
1507 #ifdef CONFIG_RT2X00_LIB_LEDS
1508         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1509
1510         rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_radio, LED_TYPE_RADIO);
1511         if (value == LED_MODE_TXRX_ACTIVITY ||
1512             value == LED_MODE_DEFAULT ||
1513             value == LED_MODE_ASUS)
1514                 rt2500usb_init_led(rt2x00dev, &rt2x00dev->led_qual,
1515                                    LED_TYPE_ACTIVITY);
1516 #endif /* CONFIG_RT2X00_LIB_LEDS */
1517
1518         /*
1519          * Detect if this device has an hardware controlled radio.
1520          */
1521         if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_HARDWARE_RADIO))
1522                 __set_bit(CAPABILITY_HW_BUTTON, &rt2x00dev->cap_flags);
1523
1524         /*
1525          * Read the RSSI <-> dBm offset information.
1526          */
1527         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1528         rt2x00dev->rssi_offset =
1529             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1530
1531         return 0;
1532 }
1533
1534 /*
1535  * RF value list for RF2522
1536  * Supports: 2.4 GHz
1537  */
1538 static const struct rf_channel rf_vals_bg_2522[] = {
1539         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1540         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1541         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1542         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1543         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1544         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1545         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1546         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1547         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1548         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1549         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1550         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1551         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1552         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1553 };
1554
1555 /*
1556  * RF value list for RF2523
1557  * Supports: 2.4 GHz
1558  */
1559 static const struct rf_channel rf_vals_bg_2523[] = {
1560         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1561         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1562         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1563         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1564         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1565         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1566         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1567         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1568         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1569         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1570         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1571         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1572         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1573         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1574 };
1575
1576 /*
1577  * RF value list for RF2524
1578  * Supports: 2.4 GHz
1579  */
1580 static const struct rf_channel rf_vals_bg_2524[] = {
1581         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1582         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1583         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1584         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1585         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1586         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1587         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1588         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1589         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1590         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1591         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1592         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1593         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1594         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1595 };
1596
1597 /*
1598  * RF value list for RF2525
1599  * Supports: 2.4 GHz
1600  */
1601 static const struct rf_channel rf_vals_bg_2525[] = {
1602         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1603         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1604         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1605         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1606         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1607         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1608         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1609         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1610         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1611         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1612         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1613         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1614         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1615         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1616 };
1617
1618 /*
1619  * RF value list for RF2525e
1620  * Supports: 2.4 GHz
1621  */
1622 static const struct rf_channel rf_vals_bg_2525e[] = {
1623         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1624         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1625         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1626         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1627         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1628         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1629         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1630         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1631         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1632         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1633         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1634         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1635         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1636         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1637 };
1638
1639 /*
1640  * RF value list for RF5222
1641  * Supports: 2.4 GHz & 5.2 GHz
1642  */
1643 static const struct rf_channel rf_vals_5222[] = {
1644         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1645         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1646         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1647         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1648         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1649         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1650         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1651         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1652         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1653         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1654         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1655         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1656         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1657         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1658
1659         /* 802.11 UNI / HyperLan 2 */
1660         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1661         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1662         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1663         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1664         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1665         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1666         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1667         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1668
1669         /* 802.11 HyperLan 2 */
1670         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1671         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1672         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1673         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1674         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1675         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1676         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1677         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1678         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1679         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1680
1681         /* 802.11 UNII */
1682         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1683         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1684         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1685         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1686         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1687 };
1688
1689 static int rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1690 {
1691         struct hw_mode_spec *spec = &rt2x00dev->spec;
1692         struct channel_info *info;
1693         char *tx_power;
1694         unsigned int i;
1695
1696         /*
1697          * Initialize all hw fields.
1698          *
1699          * Don't set IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING unless we are
1700          * capable of sending the buffered frames out after the DTIM
1701          * transmission using rt2x00lib_beacondone. This will send out
1702          * multicast and broadcast traffic immediately instead of buffering it
1703          * infinitly and thus dropping it after some time.
1704          */
1705         rt2x00dev->hw->flags =
1706             IEEE80211_HW_RX_INCLUDES_FCS |
1707             IEEE80211_HW_SIGNAL_DBM |
1708             IEEE80211_HW_SUPPORTS_PS |
1709             IEEE80211_HW_PS_NULLFUNC_STACK;
1710
1711         SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev);
1712         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1713                                 rt2x00_eeprom_addr(rt2x00dev,
1714                                                    EEPROM_MAC_ADDR_0));
1715
1716         /*
1717          * Initialize hw_mode information.
1718          */
1719         spec->supported_bands = SUPPORT_BAND_2GHZ;
1720         spec->supported_rates = SUPPORT_RATE_CCK | SUPPORT_RATE_OFDM;
1721
1722         if (rt2x00_rf(rt2x00dev, RF2522)) {
1723                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1724                 spec->channels = rf_vals_bg_2522;
1725         } else if (rt2x00_rf(rt2x00dev, RF2523)) {
1726                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1727                 spec->channels = rf_vals_bg_2523;
1728         } else if (rt2x00_rf(rt2x00dev, RF2524)) {
1729                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1730                 spec->channels = rf_vals_bg_2524;
1731         } else if (rt2x00_rf(rt2x00dev, RF2525)) {
1732                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1733                 spec->channels = rf_vals_bg_2525;
1734         } else if (rt2x00_rf(rt2x00dev, RF2525E)) {
1735                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1736                 spec->channels = rf_vals_bg_2525e;
1737         } else if (rt2x00_rf(rt2x00dev, RF5222)) {
1738                 spec->supported_bands |= SUPPORT_BAND_5GHZ;
1739                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1740                 spec->channels = rf_vals_5222;
1741         }
1742
1743         /*
1744          * Create channel information array
1745          */
1746         info = kcalloc(spec->num_channels, sizeof(*info), GFP_KERNEL);
1747         if (!info)
1748                 return -ENOMEM;
1749
1750         spec->channels_info = info;
1751
1752         tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1753         for (i = 0; i < 14; i++) {
1754                 info[i].max_power = MAX_TXPOWER;
1755                 info[i].default_power1 = TXPOWER_FROM_DEV(tx_power[i]);
1756         }
1757
1758         if (spec->num_channels > 14) {
1759                 for (i = 14; i < spec->num_channels; i++) {
1760                         info[i].max_power = MAX_TXPOWER;
1761                         info[i].default_power1 = DEFAULT_TXPOWER;
1762                 }
1763         }
1764
1765         return 0;
1766 }
1767
1768 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1769 {
1770         int retval;
1771
1772         /*
1773          * Allocate eeprom data.
1774          */
1775         retval = rt2500usb_validate_eeprom(rt2x00dev);
1776         if (retval)
1777                 return retval;
1778
1779         retval = rt2500usb_init_eeprom(rt2x00dev);
1780         if (retval)
1781                 return retval;
1782
1783         /*
1784          * Initialize hw specifications.
1785          */
1786         retval = rt2500usb_probe_hw_mode(rt2x00dev);
1787         if (retval)
1788                 return retval;
1789
1790         /*
1791          * This device requires the atim queue
1792          */
1793         __set_bit(REQUIRE_ATIM_QUEUE, &rt2x00dev->cap_flags);
1794         __set_bit(REQUIRE_BEACON_GUARD, &rt2x00dev->cap_flags);
1795         if (!modparam_nohwcrypt) {
1796                 __set_bit(CAPABILITY_HW_CRYPTO, &rt2x00dev->cap_flags);
1797                 __set_bit(REQUIRE_COPY_IV, &rt2x00dev->cap_flags);
1798         }
1799         __set_bit(REQUIRE_SW_SEQNO, &rt2x00dev->cap_flags);
1800         __set_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags);
1801
1802         /*
1803          * Set the rssi offset.
1804          */
1805         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1806
1807         return 0;
1808 }
1809
1810 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1811         .tx                     = rt2x00mac_tx,
1812         .start                  = rt2x00mac_start,
1813         .stop                   = rt2x00mac_stop,
1814         .add_interface          = rt2x00mac_add_interface,
1815         .remove_interface       = rt2x00mac_remove_interface,
1816         .config                 = rt2x00mac_config,
1817         .configure_filter       = rt2x00mac_configure_filter,
1818         .set_tim                = rt2x00mac_set_tim,
1819         .set_key                = rt2x00mac_set_key,
1820         .sw_scan_start          = rt2x00mac_sw_scan_start,
1821         .sw_scan_complete       = rt2x00mac_sw_scan_complete,
1822         .get_stats              = rt2x00mac_get_stats,
1823         .bss_info_changed       = rt2x00mac_bss_info_changed,
1824         .conf_tx                = rt2x00mac_conf_tx,
1825         .rfkill_poll            = rt2x00mac_rfkill_poll,
1826         .flush                  = rt2x00mac_flush,
1827         .set_antenna            = rt2x00mac_set_antenna,
1828         .get_antenna            = rt2x00mac_get_antenna,
1829         .get_ringparam          = rt2x00mac_get_ringparam,
1830         .tx_frames_pending      = rt2x00mac_tx_frames_pending,
1831 };
1832
1833 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1834         .probe_hw               = rt2500usb_probe_hw,
1835         .initialize             = rt2x00usb_initialize,
1836         .uninitialize           = rt2x00usb_uninitialize,
1837         .clear_entry            = rt2x00usb_clear_entry,
1838         .set_device_state       = rt2500usb_set_device_state,
1839         .rfkill_poll            = rt2500usb_rfkill_poll,
1840         .link_stats             = rt2500usb_link_stats,
1841         .reset_tuner            = rt2500usb_reset_tuner,
1842         .watchdog               = rt2x00usb_watchdog,
1843         .start_queue            = rt2500usb_start_queue,
1844         .kick_queue             = rt2x00usb_kick_queue,
1845         .stop_queue             = rt2500usb_stop_queue,
1846         .flush_queue            = rt2x00usb_flush_queue,
1847         .write_tx_desc          = rt2500usb_write_tx_desc,
1848         .write_beacon           = rt2500usb_write_beacon,
1849         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1850         .fill_rxdone            = rt2500usb_fill_rxdone,
1851         .config_shared_key      = rt2500usb_config_key,
1852         .config_pairwise_key    = rt2500usb_config_key,
1853         .config_filter          = rt2500usb_config_filter,
1854         .config_intf            = rt2500usb_config_intf,
1855         .config_erp             = rt2500usb_config_erp,
1856         .config_ant             = rt2500usb_config_ant,
1857         .config                 = rt2500usb_config,
1858 };
1859
1860 static const struct data_queue_desc rt2500usb_queue_rx = {
1861         .entry_num              = 32,
1862         .data_size              = DATA_FRAME_SIZE,
1863         .desc_size              = RXD_DESC_SIZE,
1864         .priv_size              = sizeof(struct queue_entry_priv_usb),
1865 };
1866
1867 static const struct data_queue_desc rt2500usb_queue_tx = {
1868         .entry_num              = 32,
1869         .data_size              = DATA_FRAME_SIZE,
1870         .desc_size              = TXD_DESC_SIZE,
1871         .priv_size              = sizeof(struct queue_entry_priv_usb),
1872 };
1873
1874 static const struct data_queue_desc rt2500usb_queue_bcn = {
1875         .entry_num              = 1,
1876         .data_size              = MGMT_FRAME_SIZE,
1877         .desc_size              = TXD_DESC_SIZE,
1878         .priv_size              = sizeof(struct queue_entry_priv_usb_bcn),
1879 };
1880
1881 static const struct data_queue_desc rt2500usb_queue_atim = {
1882         .entry_num              = 8,
1883         .data_size              = DATA_FRAME_SIZE,
1884         .desc_size              = TXD_DESC_SIZE,
1885         .priv_size              = sizeof(struct queue_entry_priv_usb),
1886 };
1887
1888 static const struct rt2x00_ops rt2500usb_ops = {
1889         .name                   = KBUILD_MODNAME,
1890         .max_sta_intf           = 1,
1891         .max_ap_intf            = 1,
1892         .eeprom_size            = EEPROM_SIZE,
1893         .rf_size                = RF_SIZE,
1894         .tx_queues              = NUM_TX_QUEUES,
1895         .extra_tx_headroom      = TXD_DESC_SIZE,
1896         .rx                     = &rt2500usb_queue_rx,
1897         .tx                     = &rt2500usb_queue_tx,
1898         .bcn                    = &rt2500usb_queue_bcn,
1899         .atim                   = &rt2500usb_queue_atim,
1900         .lib                    = &rt2500usb_rt2x00_ops,
1901         .hw                     = &rt2500usb_mac80211_ops,
1902 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1903         .debugfs                = &rt2500usb_rt2x00debug,
1904 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1905 };
1906
1907 /*
1908  * rt2500usb module information.
1909  */
1910 static struct usb_device_id rt2500usb_device_table[] = {
1911         /* ASUS */
1912         { USB_DEVICE(0x0b05, 0x1706) },
1913         { USB_DEVICE(0x0b05, 0x1707) },
1914         /* Belkin */
1915         { USB_DEVICE(0x050d, 0x7050) },
1916         { USB_DEVICE(0x050d, 0x7051) },
1917         /* Cisco Systems */
1918         { USB_DEVICE(0x13b1, 0x000d) },
1919         { USB_DEVICE(0x13b1, 0x0011) },
1920         { USB_DEVICE(0x13b1, 0x001a) },
1921         /* Conceptronic */
1922         { USB_DEVICE(0x14b2, 0x3c02) },
1923         /* D-LINK */
1924         { USB_DEVICE(0x2001, 0x3c00) },
1925         /* Gigabyte */
1926         { USB_DEVICE(0x1044, 0x8001) },
1927         { USB_DEVICE(0x1044, 0x8007) },
1928         /* Hercules */
1929         { USB_DEVICE(0x06f8, 0xe000) },
1930         /* Melco */
1931         { USB_DEVICE(0x0411, 0x005e) },
1932         { USB_DEVICE(0x0411, 0x0066) },
1933         { USB_DEVICE(0x0411, 0x0067) },
1934         { USB_DEVICE(0x0411, 0x008b) },
1935         { USB_DEVICE(0x0411, 0x0097) },
1936         /* MSI */
1937         { USB_DEVICE(0x0db0, 0x6861) },
1938         { USB_DEVICE(0x0db0, 0x6865) },
1939         { USB_DEVICE(0x0db0, 0x6869) },
1940         /* Ralink */
1941         { USB_DEVICE(0x148f, 0x1706) },
1942         { USB_DEVICE(0x148f, 0x2570) },
1943         { USB_DEVICE(0x148f, 0x9020) },
1944         /* Sagem */
1945         { USB_DEVICE(0x079b, 0x004b) },
1946         /* Siemens */
1947         { USB_DEVICE(0x0681, 0x3c06) },
1948         /* SMC */
1949         { USB_DEVICE(0x0707, 0xee13) },
1950         /* Spairon */
1951         { USB_DEVICE(0x114b, 0x0110) },
1952         /* SURECOM */
1953         { USB_DEVICE(0x0769, 0x11f3) },
1954         /* Trust */
1955         { USB_DEVICE(0x0eb0, 0x9020) },
1956         /* VTech */
1957         { USB_DEVICE(0x0f88, 0x3012) },
1958         /* Zinwell */
1959         { USB_DEVICE(0x5a57, 0x0260) },
1960         { 0, }
1961 };
1962
1963 MODULE_AUTHOR(DRV_PROJECT);
1964 MODULE_VERSION(DRV_VERSION);
1965 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1966 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1967 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1968 MODULE_LICENSE("GPL");
1969
1970 static int rt2500usb_probe(struct usb_interface *usb_intf,
1971                            const struct usb_device_id *id)
1972 {
1973         return rt2x00usb_probe(usb_intf, &rt2500usb_ops);
1974 }
1975
1976 static struct usb_driver rt2500usb_driver = {
1977         .name           = KBUILD_MODNAME,
1978         .id_table       = rt2500usb_device_table,
1979         .probe          = rt2500usb_probe,
1980         .disconnect     = rt2x00usb_disconnect,
1981         .suspend        = rt2x00usb_suspend,
1982         .resume         = rt2x00usb_resume,
1983 };
1984
1985 static int __init rt2500usb_init(void)
1986 {
1987         return usb_register(&rt2500usb_driver);
1988 }
1989
1990 static void __exit rt2500usb_exit(void)
1991 {
1992         usb_deregister(&rt2500usb_driver);
1993 }
1994
1995 module_init(rt2500usb_init);
1996 module_exit(rt2500usb_exit);