drivers/net/wireless/rt2x00/rt2500usb.c

   1 /*
   2         Copyright (C) 2004 - 2007 rt2x00 SourceForge Project
   3         <http://rt2x00.serialmonkey.com>
   4
   5         This program is free software; you can redistribute it and/or modify
   6         it under the terms of the GNU General Public License as published by
   7         the Free Software Foundation; either version 2 of the License, or
   8         (at your option) any later version.
   9
  10         This program is distributed in the hope that it will be useful,
  11         but WITHOUT ANY WARRANTY; without even the implied warranty of
  12         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13         GNU General Public License for more details.
  14
  15         You should have received a copy of the GNU General Public License
  16         along with this program; if not, write to the
  17         Free Software Foundation, Inc.,
  18         59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 /*
  22         Module: rt2500usb
  23         Abstract: rt2500usb device specific routines.
  24         Supported chipsets: RT2570.
  25  */
  26
  27 /*
  28  * Set enviroment defines for rt2x00.h
  29  */
  30 #define DRV_NAME "rt2500usb"
  31
  32 #include <linux/delay.h>
  33 #include <linux/etherdevice.h>
  34 #include <linux/init.h>
  35 #include <linux/kernel.h>
  36 #include <linux/module.h>
  37 #include <linux/usb.h>
  38
  39 #include "rt2x00.h"
  40 #include "rt2x00usb.h"
  41 #include "rt2500usb.h"
  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_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  */
  56 static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
  57                                            const unsigned int offset,
  58                                            u16 *value)
  59 {
  60         __le16 reg;
  61         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  62                                       USB_VENDOR_REQUEST_IN, offset,
  63                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
  64         *value = le16_to_cpu(reg);
  65 }
  66
  67 static inline void rt2500usb_register_multiread(struct rt2x00_dev *rt2x00dev,
  68                                                 const unsigned int offset,
  69                                                 void *value, const u16 length)
  70 {
  71         int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
  72         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  73                                       USB_VENDOR_REQUEST_IN, offset,
  74                                       value, length, timeout);
  75 }
  76
  77 static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
  78                                             const unsigned int offset,
  79                                             u16 value)
  80 {
  81         __le16 reg = cpu_to_le16(value);
  82         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
  83                                       USB_VENDOR_REQUEST_OUT, offset,
  84                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
  85 }
  86
  87 static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
  88                                                  const unsigned int offset,
  89                                                  void *value, const u16 length)
  90 {
  91         int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
  92         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
  93                                       USB_VENDOR_REQUEST_OUT, offset,
  94                                       value, length, timeout);
  95 }
  96
  97 static u16 rt2500usb_bbp_check(struct rt2x00_dev *rt2x00dev)
  98 {
  99         u16 reg;
 100         unsigned int i;
 101
 102         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 103                 rt2500usb_register_read(rt2x00dev, PHY_CSR8, &reg);
 104                 if (!rt2x00_get_field16(reg, PHY_CSR8_BUSY))
 105                         break;
 106                 udelay(REGISTER_BUSY_DELAY);
 107         }
 108
 109         return reg;
 110 }
 111
 112 static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
 113                                 const unsigned int word, const u8 value)
 114 {
 115         u16 reg;
 116
 117         /*
 118          * Wait until the BBP becomes ready.
 119          */
 120         reg = rt2500usb_bbp_check(rt2x00dev);
 121         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 122                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n");
 123                 return;
 124         }
 125
 126         /*
 127          * Write the data into the BBP.
 128          */
 129         reg = 0;
 130         rt2x00_set_field16(&reg, PHY_CSR7_DATA, value);
 131         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 132         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 0);
 133
 134         rt2500usb_register_write(rt2x00dev, PHY_CSR7, reg);
 135 }
 136
 137 static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
 138                                const unsigned int word, u8 *value)
 139 {
 140         u16 reg;
 141
 142         /*
 143          * Wait until the BBP becomes ready.
 144          */
 145         reg = rt2500usb_bbp_check(rt2x00dev);
 146         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 147                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
 148                 return;
 149         }
 150
 151         /*
 152          * Write the request into the BBP.
 153          */
 154         reg = 0;
 155         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 156         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 1);
 157
 158         rt2500usb_register_write(rt2x00dev, PHY_CSR7, reg);
 159
 160         /*
 161          * Wait until the BBP becomes ready.
 162          */
 163         reg = rt2500usb_bbp_check(rt2x00dev);
 164         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 165                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
 166                 *value = 0xff;
 167                 return;
 168         }
 169
 170         rt2500usb_register_read(rt2x00dev, PHY_CSR7, &reg);
 171         *value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
 172 }
 173
 174 static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev,
 175                                const unsigned int word, const u32 value)
 176 {
 177         u16 reg;
 178         unsigned int i;
 179
 180         if (!word)
 181                 return;
 182
 183         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 184                 rt2500usb_register_read(rt2x00dev, PHY_CSR10, &reg);
 185                 if (!rt2x00_get_field16(reg, PHY_CSR10_RF_BUSY))
 186                         goto rf_write;
 187                 udelay(REGISTER_BUSY_DELAY);
 188         }
 189
 190         ERROR(rt2x00dev, "PHY_CSR10 register busy. Write failed.\n");
 191         return;
 192
 193 rf_write:
 194         reg = 0;
 195         rt2x00_set_field16(&reg, PHY_CSR9_RF_VALUE, value);
 196         rt2500usb_register_write(rt2x00dev, PHY_CSR9, reg);
 197
 198         reg = 0;
 199         rt2x00_set_field16(&reg, PHY_CSR10_RF_VALUE, value >> 16);
 200         rt2x00_set_field16(&reg, PHY_CSR10_RF_NUMBER_OF_BITS, 20);
 201         rt2x00_set_field16(&reg, PHY_CSR10_RF_IF_SELECT, 0);
 202         rt2x00_set_field16(&reg, PHY_CSR10_RF_BUSY, 1);
 203
 204         rt2500usb_register_write(rt2x00dev, PHY_CSR10, reg);
 205         rt2x00_rf_write(rt2x00dev, word, value);
 206 }
 207
 208 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 209 #define CSR_OFFSET(__word)      ( CSR_REG_BASE + ((__word) * sizeof(u16)) )
 210
 211 static void rt2500usb_read_csr(struct rt2x00_dev *rt2x00dev,
 212                                const unsigned int word, u32 *data)
 213 {
 214         rt2500usb_register_read(rt2x00dev, CSR_OFFSET(word), (u16 *) data);
 215 }
 216
 217 static void rt2500usb_write_csr(struct rt2x00_dev *rt2x00dev,
 218                                 const unsigned int word, u32 data)
 219 {
 220         rt2500usb_register_write(rt2x00dev, CSR_OFFSET(word), data);
 221 }
 222
 223 static const struct rt2x00debug rt2500usb_rt2x00debug = {
 224         .owner  = THIS_MODULE,
 225         .csr    = {
 226                 .read           = rt2500usb_read_csr,
 227                 .write          = rt2500usb_write_csr,
 228                 .word_size      = sizeof(u16),
 229                 .word_count     = CSR_REG_SIZE / sizeof(u16),
 230         },
 231         .eeprom = {
 232                 .read           = rt2x00_eeprom_read,
 233                 .write          = rt2x00_eeprom_write,
 234                 .word_size      = sizeof(u16),
 235                 .word_count     = EEPROM_SIZE / sizeof(u16),
 236         },
 237         .bbp    = {
 238                 .read           = rt2500usb_bbp_read,
 239                 .write          = rt2500usb_bbp_write,
 240                 .word_size      = sizeof(u8),
 241                 .word_count     = BBP_SIZE / sizeof(u8),
 242         },
 243         .rf     = {
 244                 .read           = rt2x00_rf_read,
 245                 .write          = rt2500usb_rf_write,
 246                 .word_size      = sizeof(u32),
 247                 .word_count     = RF_SIZE / sizeof(u32),
 248         },
 249 };
 250 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 251
 252 /*
 253  * Configuration handlers.
 254  */
 255 static void rt2500usb_config_mac_addr(struct rt2x00_dev *rt2x00dev,
 256                                       __le32 *mac)
 257 {
 258         rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, mac,
 259                                       (3 * sizeof(__le16)));
 260 }
 261
 262 static void rt2500usb_config_bssid(struct rt2x00_dev *rt2x00dev,
 263                                    __le32 *bssid)
 264 {
 265         rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, bssid,
 266                                       (3 * sizeof(__le16)));
 267 }
 268
 269 static void rt2500usb_config_type(struct rt2x00_dev *rt2x00dev, const int type,
 270                                   const int tsf_sync)
 271 {
 272         u16 reg;
 273
 274         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 275
 276         /*
 277          * Enable beacon config
 278          */
 279         rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
 280         rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET,
 281                            (PREAMBLE + get_duration(IEEE80211_HEADER, 20)) >> 6);
 282         if (type == IEEE80211_IF_TYPE_STA)
 283                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW, 0);
 284         else
 285                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW, 2);
 286         rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
 287
 288         /*
 289          * Enable synchronisation.
 290          */
 291         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 292         rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
 293         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 294
 295         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 296         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
 297         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
 298         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
 299         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, tsf_sync);
 300         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 301 }
 302
 303 static void rt2500usb_config_preamble(struct rt2x00_dev *rt2x00dev,
 304                                       const int short_preamble,
 305                                       const int ack_timeout,
 306                                       const int ack_consume_time)
 307 {
 308         u16 reg;
 309
 310         /*
 311          * When in atomic context, reschedule and let rt2x00lib
 312          * call this function again.
 313          */
 314         if (in_atomic()) {
 315                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->config_work);
 316                 return;
 317         }
 318
 319         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 320         rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, ack_timeout);
 321         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 322
 323         rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
 324         rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
 325                            !!short_preamble);
 326         rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
 327 }
 328
 329 static void rt2500usb_config_phymode(struct rt2x00_dev *rt2x00dev,
 330                                      const int phymode,
 331                                      const int basic_rate_mask)
 332 {
 333         rt2500usb_register_write(rt2x00dev, TXRX_CSR11, basic_rate_mask);
 334
 335         if (phymode == HWMODE_B) {
 336                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x000b);
 337                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x0040);
 338         } else {
 339                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0005);
 340                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x016c);
 341         }
 342 }
 343
 344 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
 345                                      struct rf_channel *rf, const int txpower)
 346 {
 347         /*
 348          * Set TXpower.
 349          */
 350         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 351
 352         /*
 353          * For RT2525E we should first set the channel to half band higher.
 354          */
 355         if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
 356                 static const u32 vals[] = {
 357                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
 358                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
 359                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
 360                         0x00000902, 0x00000906
 361                 };
 362
 363                 rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
 364                 if (rf->rf4)
 365                         rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
 366         }
 367
 368         rt2500usb_rf_write(rt2x00dev, 1, rf->rf1);
 369         rt2500usb_rf_write(rt2x00dev, 2, rf->rf2);
 370         rt2500usb_rf_write(rt2x00dev, 3, rf->rf3);
 371         if (rf->rf4)
 372                 rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
 373 }
 374
 375 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
 376                                      const int txpower)
 377 {
 378         u32 rf3;
 379
 380         rt2x00_rf_read(rt2x00dev, 3, &rf3);
 381         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 382         rt2500usb_rf_write(rt2x00dev, 3, rf3);
 383 }
 384
 385 static void rt2500usb_config_antenna(struct rt2x00_dev *rt2x00dev,
 386                                      struct antenna_setup *ant)
 387 {
 388         u8 r2;
 389         u8 r14;
 390         u16 csr5;
 391         u16 csr6;
 392
 393         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
 394         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
 395         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
 396         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
 397
 398         /*
 399          * Configure the TX antenna.
 400          */
 401         switch (ant->tx) {
 402         case ANTENNA_HW_DIVERSITY:
 403                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
 404                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
 405                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
 406                 break;
 407         case ANTENNA_A:
 408                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
 409                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
 410                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
 411                 break;
 412         case ANTENNA_SW_DIVERSITY:
 413                 /*
 414                  * NOTE: We should never come here because rt2x00lib is
 415                  * supposed to catch this and send us the correct antenna
 416                  * explicitely. However we are nog going to bug about this.
 417                  * Instead, just default to antenna B.
 418                  */
 419         case ANTENNA_B:
 420                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
 421                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
 422                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
 423                 break;
 424         }
 425
 426         /*
 427          * Configure the RX antenna.
 428          */
 429         switch (ant->rx) {
 430         case ANTENNA_HW_DIVERSITY:
 431                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
 432                 break;
 433         case ANTENNA_A:
 434                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
 435                 break;
 436         case ANTENNA_SW_DIVERSITY:
 437                 /*
 438                  * NOTE: We should never come here because rt2x00lib is
 439                  * supposed to catch this and send us the correct antenna
 440                  * explicitely. However we are nog going to bug about this.
 441                  * Instead, just default to antenna B.
 442                  */
 443         case ANTENNA_B:
 444                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
 445                 break;
 446         }
 447
 448         /*
 449          * RT2525E and RT5222 need to flip TX I/Q
 450          */
 451         if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
 452             rt2x00_rf(&rt2x00dev->chip, RF5222)) {
 453                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
 454                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
 455                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
 456
 457                 /*
 458                  * RT2525E does not need RX I/Q Flip.
 459                  */
 460                 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
 461                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
 462         } else {
 463                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
 464                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
 465         }
 466
 467         rt2500usb_bbp_write(rt2x00dev, 2, r2);
 468         rt2500usb_bbp_write(rt2x00dev, 14, r14);
 469         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
 470         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
 471 }
 472
 473 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
 474                                       struct rt2x00lib_conf *libconf)
 475 {
 476         u16 reg;
 477
 478         rt2500usb_register_write(rt2x00dev, MAC_CSR10, libconf->slot_time);
 479
 480         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 481         rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL,
 482                            libconf->conf->beacon_int * 4);
 483         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 484 }
 485
 486 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
 487                              const unsigned int flags,
 488                              struct rt2x00lib_conf *libconf)
 489 {
 490         if (flags & CONFIG_UPDATE_PHYMODE)
 491                 rt2500usb_config_phymode(rt2x00dev, libconf->phymode,
 492                                          libconf->basic_rates);
 493         if (flags & CONFIG_UPDATE_CHANNEL)
 494                 rt2500usb_config_channel(rt2x00dev, &libconf->rf,
 495                                          libconf->conf->power_level);
 496         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
 497                 rt2500usb_config_txpower(rt2x00dev,
 498                                          libconf->conf->power_level);
 499         if (flags & CONFIG_UPDATE_ANTENNA)
 500                 rt2500usb_config_antenna(rt2x00dev, &libconf->ant);
 501         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
 502                 rt2500usb_config_duration(rt2x00dev, libconf);
 503 }
 504
 505 /*
 506  * LED functions.
 507  */
 508 static void rt2500usb_enable_led(struct rt2x00_dev *rt2x00dev)
 509 {
 510         u16 reg;
 511
 512         rt2500usb_register_read(rt2x00dev, MAC_CSR21, &reg);
 513         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, 70);
 514         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, 30);
 515         rt2500usb_register_write(rt2x00dev, MAC_CSR21, reg);
 516
 517         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 518         rt2x00_set_field16(&reg, MAC_CSR20_LINK,
 519                            (rt2x00dev->led_mode != LED_MODE_ASUS));
 520         rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY,
 521                            (rt2x00dev->led_mode != LED_MODE_TXRX_ACTIVITY));
 522         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 523 }
 524
 525 static void rt2500usb_disable_led(struct rt2x00_dev *rt2x00dev)
 526 {
 527         u16 reg;
 528
 529         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 530         rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 531         rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 532         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 533 }
 534
 535 /*
 536  * Link tuning
 537  */
 538 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
 539                                  struct link_qual *qual)
 540 {
 541         u16 reg;
 542
 543         /*
 544          * Update FCS error count from register.
 545          */
 546         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
 547         qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
 548
 549         /*
 550          * Update False CCA count from register.
 551          */
 552         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
 553         qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
 554 }
 555
 556 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
 557 {
 558         u16 eeprom;
 559         u16 value;
 560
 561         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
 562         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
 563         rt2500usb_bbp_write(rt2x00dev, 24, value);
 564
 565         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
 566         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
 567         rt2500usb_bbp_write(rt2x00dev, 25, value);
 568
 569         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
 570         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
 571         rt2500usb_bbp_write(rt2x00dev, 61, value);
 572
 573         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
 574         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
 575         rt2500usb_bbp_write(rt2x00dev, 17, value);
 576
 577         rt2x00dev->link.vgc_level = value;
 578 }
 579
 580 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
 581 {
 582         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
 583         u16 bbp_thresh;
 584         u16 vgc_bound;
 585         u16 sens;
 586         u16 r24;
 587         u16 r25;
 588         u16 r61;
 589         u16 r17_sens;
 590         u8 r17;
 591         u8 up_bound;
 592         u8 low_bound;
 593
 594         /*
 595          * Determine the BBP tuning threshold and correctly
 596          * set BBP 24, 25 and 61.
 597          */
 598         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
 599         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
 600
 601         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
 602         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
 603         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
 604
 605         if ((rssi + bbp_thresh) > 0) {
 606                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
 607                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
 608                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
 609         } else {
 610                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
 611                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
 612                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
 613         }
 614
 615         rt2500usb_bbp_write(rt2x00dev, 24, r24);
 616         rt2500usb_bbp_write(rt2x00dev, 25, r25);
 617         rt2500usb_bbp_write(rt2x00dev, 61, r61);
 618
 619         /*
 620          * Read current r17 value, as well as the sensitivity values
 621          * for the r17 register.
 622          */
 623         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
 624         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
 625
 626         /*
 627          * A too low RSSI will cause too much false CCA which will
 628          * then corrupt the R17 tuning. To remidy this the tuning should
 629          * be stopped (While making sure the R17 value will not exceed limits)
 630          */
 631         if (rssi >= -40) {
 632                 if (r17 != 0x60)
 633                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
 634                 return;
 635         }
 636
 637         /*
 638          * Special big-R17 for short distance
 639          */
 640         if (rssi >= -58) {
 641                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
 642                 if (r17 != sens)
 643                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 644                 return;
 645         }
 646
 647         /*
 648          * Special mid-R17 for middle distance
 649          */
 650         if (rssi >= -74) {
 651                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
 652                 if (r17 != sens)
 653                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 654                 return;
 655         }
 656
 657         /*
 658          * Leave short or middle distance condition, restore r17
 659          * to the dynamic tuning range.
 660          */
 661         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
 662         vgc_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
 663
 664         low_bound = 0x32;
 665         if (rssi >= -77)
 666                 up_bound = vgc_bound;
 667         else
 668                 up_bound = vgc_bound - (-77 - rssi);
 669
 670         if (up_bound < low_bound)
 671                 up_bound = low_bound;
 672
 673         if (r17 > up_bound) {
 674                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
 675                 rt2x00dev->link.vgc_level = up_bound;
 676         } else if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
 677                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
 678                 rt2x00dev->link.vgc_level = r17;
 679         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
 680                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
 681                 rt2x00dev->link.vgc_level = r17;
 682         }
 683 }
 684
 685 /*
 686  * Initialization functions.
 687  */
 688 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
 689 {
 690         u16 reg;
 691
 692         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
 693                                     USB_MODE_TEST, REGISTER_TIMEOUT);
 694         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
 695                                     0x00f0, REGISTER_TIMEOUT);
 696
 697         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 698         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 699         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 700
 701         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
 702         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
 703
 704         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 705         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
 706         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
 707         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 708         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 709
 710         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 711         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 712         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 713         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 714         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 715
 716         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
 717         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
 718         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
 719         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
 720         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
 721         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
 722
 723         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
 724         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
 725         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
 726         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
 727         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
 728         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
 729
 730         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 731         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
 732         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
 733         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
 734         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
 735         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 736
 737         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 738         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
 739         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
 740         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
 741         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
 742         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 743
 744         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
 745         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
 746
 747         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 748                 return -EBUSY;
 749
 750         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 751         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 752         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 753         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
 754         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 755
 756         if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
 757                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
 758                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 0);
 759         } else {
 760                 reg = 0;
 761                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 1);
 762                 rt2x00_set_field16(&reg, PHY_CSR2_LNA_MODE, 3);
 763         }
 764         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
 765
 766         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
 767         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
 768         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
 769         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
 770
 771         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 772         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
 773                            rt2x00dev->rx->data_size);
 774         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
 775
 776         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 777         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 778         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
 779         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 780
 781         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 782         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
 783         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 784
 785         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
 786         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
 787         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
 788
 789         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 790         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
 791         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 792
 793         return 0;
 794 }
 795
 796 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
 797 {
 798         unsigned int i;
 799         u16 eeprom;
 800         u8 value;
 801         u8 reg_id;
 802
 803         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 804                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
 805                 if ((value != 0xff) && (value != 0x00))
 806                         goto continue_csr_init;
 807                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
 808                 udelay(REGISTER_BUSY_DELAY);
 809         }
 810
 811         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
 812         return -EACCES;
 813
 814 continue_csr_init:
 815         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
 816         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
 817         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
 818         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
 819         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
 820         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
 821         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
 822         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
 823         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
 824         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
 825         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
 826         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
 827         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
 828         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
 829         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
 830         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
 831         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
 832         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
 833         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
 834         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
 835         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
 836         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
 837         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
 838         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
 839         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
 840         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
 841         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
 842         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
 843         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
 844         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
 845         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
 846
 847         DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
 848         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 849                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 850
 851                 if (eeprom != 0xffff && eeprom != 0x0000) {
 852                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 853                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 854                         DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
 855                               reg_id, value);
 856                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
 857                 }
 858         }
 859         DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
 860
 861         return 0;
 862 }
 863
 864 /*
 865  * Device state switch handlers.
 866  */
 867 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
 868                                 enum dev_state state)
 869 {
 870         u16 reg;
 871
 872         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 873         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
 874                            state == STATE_RADIO_RX_OFF);
 875         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 876 }
 877
 878 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
 879 {
 880         /*
 881          * Initialize all registers.
 882          */
 883         if (rt2500usb_init_registers(rt2x00dev) ||
 884             rt2500usb_init_bbp(rt2x00dev)) {
 885                 ERROR(rt2x00dev, "Register initialization failed.\n");
 886                 return -EIO;
 887         }
 888
 889         rt2x00usb_enable_radio(rt2x00dev);
 890
 891         /*
 892          * Enable LED
 893          */
 894         rt2500usb_enable_led(rt2x00dev);
 895
 896         return 0;
 897 }
 898
 899 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
 900 {
 901         /*
 902          * Disable LED
 903          */
 904         rt2500usb_disable_led(rt2x00dev);
 905
 906         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
 907         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
 908
 909         /*
 910          * Disable synchronisation.
 911          */
 912         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 913
 914         rt2x00usb_disable_radio(rt2x00dev);
 915 }
 916
 917 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
 918                                enum dev_state state)
 919 {
 920         u16 reg;
 921         u16 reg2;
 922         unsigned int i;
 923         char put_to_sleep;
 924         char bbp_state;
 925         char rf_state;
 926
 927         put_to_sleep = (state != STATE_AWAKE);
 928
 929         reg = 0;
 930         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
 931         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
 932         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
 933         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 934         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
 935         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 936
 937         /*
 938          * Device is not guaranteed to be in the requested state yet.
 939          * We must wait until the register indicates that the
 940          * device has entered the correct state.
 941          */
 942         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 943                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
 944                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
 945                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
 946                 if (bbp_state == state && rf_state == state)
 947                         return 0;
 948                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 949                 msleep(30);
 950         }
 951
 952         NOTICE(rt2x00dev, "Device failed to enter state %d, "
 953                "current device state: bbp %d and rf %d.\n",
 954                state, bbp_state, rf_state);
 955
 956         return -EBUSY;
 957 }
 958
 959 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
 960                                       enum dev_state state)
 961 {
 962         int retval = 0;
 963
 964         switch (state) {
 965         case STATE_RADIO_ON:
 966                 retval = rt2500usb_enable_radio(rt2x00dev);
 967                 break;
 968         case STATE_RADIO_OFF:
 969                 rt2500usb_disable_radio(rt2x00dev);
 970                 break;
 971         case STATE_RADIO_RX_ON:
 972         case STATE_RADIO_RX_OFF:
 973                 rt2500usb_toggle_rx(rt2x00dev, state);
 974                 break;
 975         case STATE_DEEP_SLEEP:
 976         case STATE_SLEEP:
 977         case STATE_STANDBY:
 978         case STATE_AWAKE:
 979                 retval = rt2500usb_set_state(rt2x00dev, state);
 980                 break;
 981         default:
 982                 retval = -ENOTSUPP;
 983                 break;
 984         }
 985
 986         return retval;
 987 }
 988
 989 /*
 990  * TX descriptor initialization
 991  */
 992 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 993                                     __le32 *txd,
 994                                     struct txdata_entry_desc *desc,
 995                                     struct ieee80211_hdr *ieee80211hdr,
 996                                     unsigned int length,
 997                                     struct ieee80211_tx_control *control)
 998 {
 999         u32 word;
1000
1001         /*
1002          * Start writing the descriptor words.
1003          */
1004         rt2x00_desc_read(txd, 1, &word);
1005         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1006         rt2x00_set_field32(&word, TXD_W1_AIFS, desc->aifs);
1007         rt2x00_set_field32(&word, TXD_W1_CWMIN, desc->cw_min);
1008         rt2x00_set_field32(&word, TXD_W1_CWMAX, desc->cw_max);
1009         rt2x00_desc_write(txd, 1, word);
1010
1011         rt2x00_desc_read(txd, 2, &word);
1012         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, desc->signal);
1013         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, desc->service);
1014         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, desc->length_low);
1015         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, desc->length_high);
1016         rt2x00_desc_write(txd, 2, word);
1017
1018         rt2x00_desc_read(txd, 0, &word);
1019         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, control->retry_limit);
1020         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1021                            test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
1022         rt2x00_set_field32(&word, TXD_W0_ACK,
1023                            !(control->flags & IEEE80211_TXCTL_NO_ACK));
1024         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1025                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
1026         rt2x00_set_field32(&word, TXD_W0_OFDM,
1027                            test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
1028         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1029                            !!(control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT));
1030         rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
1031         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, length);
1032         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1033         rt2x00_desc_write(txd, 0, word);
1034 }
1035
1036 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1037                                      struct sk_buff *skb)
1038 {
1039         int length;
1040
1041         /*
1042          * The length _must_ be a multiple of 2,
1043          * but it must _not_ be a multiple of the USB packet size.
1044          */
1045         length = roundup(skb->len, 2);
1046         length += (2 * !(length % rt2x00dev->usb_maxpacket));
1047
1048         return length;
1049 }
1050
1051 /*
1052  * TX data initialization
1053  */
1054 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1055                                     unsigned int queue)
1056 {
1057         u16 reg;
1058
1059         if (queue != IEEE80211_TX_QUEUE_BEACON)
1060                 return;
1061
1062         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1063         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1064                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1065                 /*
1066                  * Beacon generation will fail initially.
1067                  * To prevent this we need to register the TXRX_CSR19
1068                  * register several times.
1069                  */
1070                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1071                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1072                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1073                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1074                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1075         }
1076 }
1077
1078 /*
1079  * RX control handlers
1080  */
1081 static void rt2500usb_fill_rxdone(struct data_entry *entry,
1082                                   struct rxdata_entry_desc *desc)
1083 {
1084         struct urb *urb = entry->priv;
1085         __le32 *rxd = (__le32 *)(entry->skb->data +
1086                                  (urb->actual_length - entry->ring->desc_size));
1087         u32 word0;
1088         u32 word1;
1089
1090         rt2x00_desc_read(rxd, 0, &word0);
1091         rt2x00_desc_read(rxd, 1, &word1);
1092
1093         desc->flags = 0;
1094         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1095                 desc->flags |= RX_FLAG_FAILED_FCS_CRC;
1096         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1097                 desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1098
1099         /*
1100          * Obtain the status about this packet.
1101          */
1102         desc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1103         desc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1104             entry->ring->rt2x00dev->rssi_offset;
1105         desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1106         desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1107
1108         return;
1109 }
1110
1111 /*
1112  * Interrupt functions.
1113  */
1114 static void rt2500usb_beacondone(struct urb *urb)
1115 {
1116         struct data_entry *entry = (struct data_entry *)urb->context;
1117         struct data_ring *ring = entry->ring;
1118
1119         if (!test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags))
1120                 return;
1121
1122         /*
1123          * Check if this was the guardian beacon,
1124          * if that was the case we need to send the real beacon now.
1125          * Otherwise we should free the sk_buffer, the device
1126          * should be doing the rest of the work now.
1127          */
1128         if (ring->index == 1) {
1129                 rt2x00_ring_index_done_inc(ring);
1130                 entry = rt2x00_get_data_entry(ring);
1131                 usb_submit_urb(entry->priv, GFP_ATOMIC);
1132                 rt2x00_ring_index_inc(ring);
1133         } else if (ring->index_done == 1) {
1134                 entry = rt2x00_get_data_entry_done(ring);
1135                 if (entry->skb) {
1136                         dev_kfree_skb(entry->skb);
1137                         entry->skb = NULL;
1138                 }
1139                 rt2x00_ring_index_done_inc(ring);
1140         }
1141 }
1142
1143 /*
1144  * Device probe functions.
1145  */
1146 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1147 {
1148         u16 word;
1149         u8 *mac;
1150
1151         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1152
1153         /*
1154          * Start validation of the data that has been read.
1155          */
1156         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1157         if (!is_valid_ether_addr(mac)) {
1158                 DECLARE_MAC_BUF(macbuf);
1159
1160                 random_ether_addr(mac);
1161                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1162         }
1163
1164         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1165         if (word == 0xffff) {
1166                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1167                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1168                                    ANTENNA_SW_DIVERSITY);
1169                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1170                                    ANTENNA_SW_DIVERSITY);
1171                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1172                                    LED_MODE_DEFAULT);
1173                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1174                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1175                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1176                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1177                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1178         }
1179
1180         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1181         if (word == 0xffff) {
1182                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1183                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1184                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1185                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1186                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1187         }
1188
1189         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1190         if (word == 0xffff) {
1191                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1192                                    DEFAULT_RSSI_OFFSET);
1193                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1194                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1195         }
1196
1197         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1198         if (word == 0xffff) {
1199                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1200                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1201                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1202         }
1203
1204         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1205         if (word == 0xffff) {
1206                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1207                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1208                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1209         }
1210
1211         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1212         if (word == 0xffff) {
1213                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1214                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1215                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1216                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1217         }
1218
1219         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1220         if (word == 0xffff) {
1221                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1222                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1223                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1224                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1225         }
1226
1227         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1228         if (word == 0xffff) {
1229                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1230                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1231                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1232                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1233         }
1234
1235         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1236         if (word == 0xffff) {
1237                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1238                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1239                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1240                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1241         }
1242
1243         return 0;
1244 }
1245
1246 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1247 {
1248         u16 reg;
1249         u16 value;
1250         u16 eeprom;
1251
1252         /*
1253          * Read EEPROM word for configuration.
1254          */
1255         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1256
1257         /*
1258          * Identify RF chipset.
1259          */
1260         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1261         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1262         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1263
1264         if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
1265                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1266                 return -ENODEV;
1267         }
1268
1269         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1270             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1271             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1272             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1273             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1274             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1275                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1276                 return -ENODEV;
1277         }
1278
1279         /*
1280          * Identify default antenna configuration.
1281          */
1282         rt2x00dev->default_ant.tx =
1283             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1284         rt2x00dev->default_ant.rx =
1285             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1286
1287         /*
1288          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1289          * I am not 100% sure about this, but the legacy drivers do not
1290          * indicate antenna swapping in software is required when
1291          * diversity is enabled.
1292          */
1293         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1294                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1295         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1296                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1297
1298         /*
1299          * Store led mode, for correct led behaviour.
1300          */
1301         rt2x00dev->led_mode =
1302             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1303
1304         /*
1305          * Check if the BBP tuning should be disabled.
1306          */
1307         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1308         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1309                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1310
1311         /*
1312          * Read the RSSI <-> dBm offset information.
1313          */
1314         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1315         rt2x00dev->rssi_offset =
1316             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1317
1318         return 0;
1319 }
1320
1321 /*
1322  * RF value list for RF2522
1323  * Supports: 2.4 GHz
1324  */
1325 static const struct rf_channel rf_vals_bg_2522[] = {
1326         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1327         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1328         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1329         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1330         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1331         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1332         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1333         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1334         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1335         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1336         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1337         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1338         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1339         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1340 };
1341
1342 /*
1343  * RF value list for RF2523
1344  * Supports: 2.4 GHz
1345  */
1346 static const struct rf_channel rf_vals_bg_2523[] = {
1347         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1348         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1349         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1350         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1351         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1352         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1353         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1354         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1355         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1356         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1357         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1358         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1359         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1360         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1361 };
1362
1363 /*
1364  * RF value list for RF2524
1365  * Supports: 2.4 GHz
1366  */
1367 static const struct rf_channel rf_vals_bg_2524[] = {
1368         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1369         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1370         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1371         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1372         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1373         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1374         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1375         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1376         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1377         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1378         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1379         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1380         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1381         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1382 };
1383
1384 /*
1385  * RF value list for RF2525
1386  * Supports: 2.4 GHz
1387  */
1388 static const struct rf_channel rf_vals_bg_2525[] = {
1389         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1390         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1391         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1392         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1393         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1394         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1395         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1396         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1397         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1398         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1399         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1400         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1401         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1402         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1403 };
1404
1405 /*
1406  * RF value list for RF2525e
1407  * Supports: 2.4 GHz
1408  */
1409 static const struct rf_channel rf_vals_bg_2525e[] = {
1410         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1411         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1412         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1413         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1414         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1415         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1416         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1417         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1418         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1419         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1420         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1421         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1422         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1423         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1424 };
1425
1426 /*
1427  * RF value list for RF5222
1428  * Supports: 2.4 GHz & 5.2 GHz
1429  */
1430 static const struct rf_channel rf_vals_5222[] = {
1431         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1432         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1433         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1434         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1435         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1436         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1437         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1438         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1439         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1440         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1441         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1442         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1443         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1444         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1445
1446         /* 802.11 UNI / HyperLan 2 */
1447         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1448         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1449         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1450         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1451         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1452         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1453         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1454         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1455
1456         /* 802.11 HyperLan 2 */
1457         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1458         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1459         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1460         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1461         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1462         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1463         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1464         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1465         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1466         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1467
1468         /* 802.11 UNII */
1469         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1470         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1471         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1472         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1473         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1474 };
1475
1476 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1477 {
1478         struct hw_mode_spec *spec = &rt2x00dev->spec;
1479         u8 *txpower;
1480         unsigned int i;
1481
1482         /*
1483          * Initialize all hw fields.
1484          */
1485         rt2x00dev->hw->flags =
1486             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1487             IEEE80211_HW_RX_INCLUDES_FCS |
1488             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1489         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1490         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1491         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1492         rt2x00dev->hw->queues = 2;
1493
1494         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1495         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1496                                 rt2x00_eeprom_addr(rt2x00dev,
1497                                                    EEPROM_MAC_ADDR_0));
1498
1499         /*
1500          * Convert tx_power array in eeprom.
1501          */
1502         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1503         for (i = 0; i < 14; i++)
1504                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1505
1506         /*
1507          * Initialize hw_mode information.
1508          */
1509         spec->num_modes = 2;
1510         spec->num_rates = 12;
1511         spec->tx_power_a = NULL;
1512         spec->tx_power_bg = txpower;
1513         spec->tx_power_default = DEFAULT_TXPOWER;
1514
1515         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1516                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1517                 spec->channels = rf_vals_bg_2522;
1518         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1519                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1520                 spec->channels = rf_vals_bg_2523;
1521         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1522                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1523                 spec->channels = rf_vals_bg_2524;
1524         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1525                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1526                 spec->channels = rf_vals_bg_2525;
1527         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1528                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1529                 spec->channels = rf_vals_bg_2525e;
1530         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1531                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1532                 spec->channels = rf_vals_5222;
1533                 spec->num_modes = 3;
1534         }
1535 }
1536
1537 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1538 {
1539         int retval;
1540
1541         /*
1542          * Allocate eeprom data.
1543          */
1544         retval = rt2500usb_validate_eeprom(rt2x00dev);
1545         if (retval)
1546                 return retval;
1547
1548         retval = rt2500usb_init_eeprom(rt2x00dev);
1549         if (retval)
1550                 return retval;
1551
1552         /*
1553          * Initialize hw specifications.
1554          */
1555         rt2500usb_probe_hw_mode(rt2x00dev);
1556
1557         /*
1558          * This device requires the beacon ring
1559          */
1560         __set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
1561
1562         /*
1563          * Set the rssi offset.
1564          */
1565         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1566
1567         return 0;
1568 }
1569
1570 /*
1571  * IEEE80211 stack callback functions.
1572  */
1573 static void rt2500usb_configure_filter(struct ieee80211_hw *hw,
1574                                        unsigned int changed_flags,
1575                                        unsigned int *total_flags,
1576                                        int mc_count,
1577                                        struct dev_addr_list *mc_list)
1578 {
1579         struct rt2x00_dev *rt2x00dev = hw->priv;
1580         struct interface *intf = &rt2x00dev->interface;
1581         u16 reg;
1582
1583         /*
1584          * Mask off any flags we are going to ignore from
1585          * the total_flags field.
1586          */
1587         *total_flags &=
1588             FIF_ALLMULTI |
1589             FIF_FCSFAIL |
1590             FIF_PLCPFAIL |
1591             FIF_CONTROL |
1592             FIF_OTHER_BSS |
1593             FIF_PROMISC_IN_BSS;
1594
1595         /*
1596          * Apply some rules to the filters:
1597          * - Some filters imply different filters to be set.
1598          * - Some things we can't filter out at all.
1599          * - Some filters are set based on interface type.
1600          */
1601         if (mc_count)
1602                 *total_flags |= FIF_ALLMULTI;
1603         if (*total_flags & FIF_OTHER_BSS ||
1604             *total_flags & FIF_PROMISC_IN_BSS)
1605                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1606         if (is_interface_type(intf, IEEE80211_IF_TYPE_AP))
1607                 *total_flags |= FIF_PROMISC_IN_BSS;
1608
1609         /*
1610          * Check if there is any work left for us.
1611          */
1612         if (intf->filter == *total_flags)
1613                 return;
1614         intf->filter = *total_flags;
1615
1616         /*
1617          * When in atomic context, reschedule and let rt2x00lib
1618          * call this function again.
1619          */
1620         if (in_atomic()) {
1621                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1622                 return;
1623         }
1624
1625         /*
1626          * Start configuration steps.
1627          * Note that the version error will always be dropped
1628          * and broadcast frames will always be accepted since
1629          * there is no filter for it at this time.
1630          */
1631         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
1632         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
1633                            !(*total_flags & FIF_FCSFAIL));
1634         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
1635                            !(*total_flags & FIF_PLCPFAIL));
1636         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
1637                            !(*total_flags & FIF_CONTROL));
1638         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
1639                            !(*total_flags & FIF_PROMISC_IN_BSS));
1640         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
1641                            !(*total_flags & FIF_PROMISC_IN_BSS));
1642         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
1643         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
1644                            !(*total_flags & FIF_ALLMULTI));
1645         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
1646         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
1647 }
1648
1649 static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
1650                                    struct sk_buff *skb,
1651                                    struct ieee80211_tx_control *control)
1652 {
1653         struct rt2x00_dev *rt2x00dev = hw->priv;
1654         struct usb_device *usb_dev =
1655             interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
1656         struct data_ring *ring =
1657             rt2x00lib_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1658         struct data_entry *beacon;
1659         struct data_entry *guardian;
1660         int pipe = usb_sndbulkpipe(usb_dev, 1);
1661         int length;
1662
1663         /*
1664          * Just in case the ieee80211 doesn't set this,
1665          * but we need this queue set for the descriptor
1666          * initialization.
1667          */
1668         control->queue = IEEE80211_TX_QUEUE_BEACON;
1669
1670         /*
1671          * Obtain 2 entries, one for the guardian byte,
1672          * the second for the actual beacon.
1673          */
1674         guardian = rt2x00_get_data_entry(ring);
1675         rt2x00_ring_index_inc(ring);
1676         beacon = rt2x00_get_data_entry(ring);
1677
1678         /*
1679          * First we create the beacon.
1680          */
1681         skb_push(skb, ring->desc_size);
1682         memset(skb->data, 0, ring->desc_size);
1683
1684         rt2x00lib_write_tx_desc(rt2x00dev, (__le32 *)skb->data,
1685                                 (struct ieee80211_hdr *)(skb->data +
1686                                                          ring->desc_size),
1687                                 skb->len - ring->desc_size, control);
1688
1689         length = rt2500usb_get_tx_data_len(rt2x00dev, skb);
1690
1691         usb_fill_bulk_urb(beacon->priv, usb_dev, pipe,
1692                           skb->data, length, rt2500usb_beacondone, beacon);
1693
1694         beacon->skb = skb;
1695
1696         /*
1697          * Second we need to create the guardian byte.
1698          * We only need a single byte, so lets recycle
1699          * the 'flags' field we are not using for beacons.
1700          */
1701         guardian->flags = 0;
1702         usb_fill_bulk_urb(guardian->priv, usb_dev, pipe,
1703                           &guardian->flags, 1, rt2500usb_beacondone, guardian);
1704
1705         /*
1706          * Send out the guardian byte.
1707          */
1708         usb_submit_urb(guardian->priv, GFP_ATOMIC);
1709
1710         /*
1711          * Enable beacon generation.
1712          */
1713         rt2500usb_kick_tx_queue(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1714
1715         return 0;
1716 }
1717
1718 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1719         .tx                     = rt2x00mac_tx,
1720         .start                  = rt2x00mac_start,
1721         .stop                   = rt2x00mac_stop,
1722         .add_interface          = rt2x00mac_add_interface,
1723         .remove_interface       = rt2x00mac_remove_interface,
1724         .config                 = rt2x00mac_config,
1725         .config_interface       = rt2x00mac_config_interface,
1726         .configure_filter       = rt2500usb_configure_filter,
1727         .get_stats              = rt2x00mac_get_stats,
1728         .erp_ie_changed         = rt2x00mac_erp_ie_changed,
1729         .conf_tx                = rt2x00mac_conf_tx,
1730         .get_tx_stats           = rt2x00mac_get_tx_stats,
1731         .beacon_update          = rt2500usb_beacon_update,
1732 };
1733
1734 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1735         .probe_hw               = rt2500usb_probe_hw,
1736         .initialize             = rt2x00usb_initialize,
1737         .uninitialize           = rt2x00usb_uninitialize,
1738         .set_device_state       = rt2500usb_set_device_state,
1739         .link_stats             = rt2500usb_link_stats,
1740         .reset_tuner            = rt2500usb_reset_tuner,
1741         .link_tuner             = rt2500usb_link_tuner,
1742         .write_tx_desc          = rt2500usb_write_tx_desc,
1743         .write_tx_data          = rt2x00usb_write_tx_data,
1744         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1745         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1746         .fill_rxdone            = rt2500usb_fill_rxdone,
1747         .config_mac_addr        = rt2500usb_config_mac_addr,
1748         .config_bssid           = rt2500usb_config_bssid,
1749         .config_type            = rt2500usb_config_type,
1750         .config_preamble        = rt2500usb_config_preamble,
1751         .config                 = rt2500usb_config,
1752 };
1753
1754 static const struct rt2x00_ops rt2500usb_ops = {
1755         .name           = DRV_NAME,
1756         .rxd_size       = RXD_DESC_SIZE,
1757         .txd_size       = TXD_DESC_SIZE,
1758         .eeprom_size    = EEPROM_SIZE,
1759         .rf_size        = RF_SIZE,
1760         .lib            = &rt2500usb_rt2x00_ops,
1761         .hw             = &rt2500usb_mac80211_ops,
1762 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1763         .debugfs        = &rt2500usb_rt2x00debug,
1764 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1765 };
1766
1767 /*
1768  * rt2500usb module information.
1769  */
1770 static struct usb_device_id rt2500usb_device_table[] = {
1771         /* ASUS */
1772         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1773         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1774         /* Belkin */
1775         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1776         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1777         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1778         /* Cisco Systems */
1779         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1780         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1781         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1782         /* Conceptronic */
1783         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1784         /* D-LINK */
1785         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1786         /* Gigabyte */
1787         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1788         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1789         /* Hercules */
1790         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1791         /* Melco */
1792         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1793         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1794         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1795         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1796
1797         /* MSI */
1798         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1799         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1800         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1801         /* Ralink */
1802         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1803         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1804         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1805         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1806         /* Siemens */
1807         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1808         /* SMC */
1809         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1810         /* Spairon */
1811         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1812         /* Trust */
1813         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1814         /* Zinwell */
1815         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1816         { 0, }
1817 };
1818
1819 MODULE_AUTHOR(DRV_PROJECT);
1820 MODULE_VERSION(DRV_VERSION);
1821 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1822 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1823 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1824 MODULE_LICENSE("GPL");
1825
1826 static struct usb_driver rt2500usb_driver = {
1827         .name           = DRV_NAME,
1828         .id_table       = rt2500usb_device_table,
1829         .probe          = rt2x00usb_probe,
1830         .disconnect     = rt2x00usb_disconnect,
1831         .suspend        = rt2x00usb_suspend,
1832         .resume         = rt2x00usb_resume,
1833 };
1834
1835 static int __init rt2500usb_init(void)
1836 {
1837         return usb_register(&rt2500usb_driver);
1838 }
1839
1840 static void __exit rt2500usb_exit(void)
1841 {
1842         usb_deregister(&rt2500usb_driver);
1843 }
1844
1845 module_init(rt2500usb_init);
1846 module_exit(rt2500usb_exit);