err.no Git - linux-2.6/blob - 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(const 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(const struct rt2x00_dev
  68                                                 *rt2x00dev,
  69                                                 const unsigned int offset,
  70                                                 void *value, const u16 length)
  71 {
  72         int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
  73         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  74                                       USB_VENDOR_REQUEST_IN, offset,
  75                                       value, length, timeout);
  76 }
  77
  78 static inline void rt2500usb_register_write(const struct rt2x00_dev *rt2x00dev,
  79                                             const unsigned int offset,
  80                                             u16 value)
  81 {
  82         __le16 reg = cpu_to_le16(value);
  83         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
  84                                       USB_VENDOR_REQUEST_OUT, offset,
  85                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
  86 }
  87
  88 static inline void rt2500usb_register_multiwrite(const struct rt2x00_dev
  89                                                  *rt2x00dev,
  90                                                  const unsigned int offset,
  91                                                  void *value, const u16 length)
  92 {
  93         int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
  94         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
  95                                       USB_VENDOR_REQUEST_OUT, offset,
  96                                       value, length, timeout);
  97 }
  98
  99 static u16 rt2500usb_bbp_check(const struct rt2x00_dev *rt2x00dev)
 100 {
 101         u16 reg;
 102         unsigned int i;
 103
 104         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 105                 rt2500usb_register_read(rt2x00dev, PHY_CSR8, &reg);
 106                 if (!rt2x00_get_field16(reg, PHY_CSR8_BUSY))
 107                         break;
 108                 udelay(REGISTER_BUSY_DELAY);
 109         }
 110
 111         return reg;
 112 }
 113
 114 static void rt2500usb_bbp_write(const struct rt2x00_dev *rt2x00dev,
 115                                 const unsigned int word, const u8 value)
 116 {
 117         u16 reg;
 118
 119         /*
 120          * Wait until the BBP becomes ready.
 121          */
 122         reg = rt2500usb_bbp_check(rt2x00dev);
 123         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 124                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n");
 125                 return;
 126         }
 127
 128         /*
 129          * Write the data into the BBP.
 130          */
 131         reg = 0;
 132         rt2x00_set_field16(&reg, PHY_CSR7_DATA, value);
 133         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 134         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 0);
 135
 136         rt2500usb_register_write(rt2x00dev, PHY_CSR7, reg);
 137 }
 138
 139 static void rt2500usb_bbp_read(const struct rt2x00_dev *rt2x00dev,
 140                                const unsigned int word, u8 *value)
 141 {
 142         u16 reg;
 143
 144         /*
 145          * Wait until the BBP becomes ready.
 146          */
 147         reg = rt2500usb_bbp_check(rt2x00dev);
 148         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 149                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
 150                 return;
 151         }
 152
 153         /*
 154          * Write the request into the BBP.
 155          */
 156         reg = 0;
 157         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 158         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 1);
 159
 160         rt2500usb_register_write(rt2x00dev, PHY_CSR7, reg);
 161
 162         /*
 163          * Wait until the BBP becomes ready.
 164          */
 165         reg = rt2500usb_bbp_check(rt2x00dev);
 166         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 167                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
 168                 *value = 0xff;
 169                 return;
 170         }
 171
 172         rt2500usb_register_read(rt2x00dev, PHY_CSR7, &reg);
 173         *value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
 174 }
 175
 176 static void rt2500usb_rf_write(const struct rt2x00_dev *rt2x00dev,
 177                                const unsigned int word, const u32 value)
 178 {
 179         u16 reg;
 180         unsigned int i;
 181
 182         if (!word)
 183                 return;
 184
 185         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 186                 rt2500usb_register_read(rt2x00dev, PHY_CSR10, &reg);
 187                 if (!rt2x00_get_field16(reg, PHY_CSR10_RF_BUSY))
 188                         goto rf_write;
 189                 udelay(REGISTER_BUSY_DELAY);
 190         }
 191
 192         ERROR(rt2x00dev, "PHY_CSR10 register busy. Write failed.\n");
 193         return;
 194
 195 rf_write:
 196         reg = 0;
 197         rt2x00_set_field16(&reg, PHY_CSR9_RF_VALUE, value);
 198         rt2500usb_register_write(rt2x00dev, PHY_CSR9, reg);
 199
 200         reg = 0;
 201         rt2x00_set_field16(&reg, PHY_CSR10_RF_VALUE, value >> 16);
 202         rt2x00_set_field16(&reg, PHY_CSR10_RF_NUMBER_OF_BITS, 20);
 203         rt2x00_set_field16(&reg, PHY_CSR10_RF_IF_SELECT, 0);
 204         rt2x00_set_field16(&reg, PHY_CSR10_RF_BUSY, 1);
 205
 206         rt2500usb_register_write(rt2x00dev, PHY_CSR10, reg);
 207         rt2x00_rf_write(rt2x00dev, word, value);
 208 }
 209
 210 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 211 #define CSR_OFFSET(__word)      ( CSR_REG_BASE + ((__word) * sizeof(u16)) )
 212
 213 static void rt2500usb_read_csr(const struct rt2x00_dev *rt2x00dev,
 214                                const unsigned int word, u32 *data)
 215 {
 216         rt2500usb_register_read(rt2x00dev, CSR_OFFSET(word), (u16 *) data);
 217 }
 218
 219 static void rt2500usb_write_csr(const struct rt2x00_dev *rt2x00dev,
 220                                 const unsigned int word, u32 data)
 221 {
 222         rt2500usb_register_write(rt2x00dev, CSR_OFFSET(word), data);
 223 }
 224
 225 static const struct rt2x00debug rt2500usb_rt2x00debug = {
 226         .owner  = THIS_MODULE,
 227         .csr    = {
 228                 .read           = rt2500usb_read_csr,
 229                 .write          = rt2500usb_write_csr,
 230                 .word_size      = sizeof(u16),
 231                 .word_count     = CSR_REG_SIZE / sizeof(u16),
 232         },
 233         .eeprom = {
 234                 .read           = rt2x00_eeprom_read,
 235                 .write          = rt2x00_eeprom_write,
 236                 .word_size      = sizeof(u16),
 237                 .word_count     = EEPROM_SIZE / sizeof(u16),
 238         },
 239         .bbp    = {
 240                 .read           = rt2500usb_bbp_read,
 241                 .write          = rt2500usb_bbp_write,
 242                 .word_size      = sizeof(u8),
 243                 .word_count     = BBP_SIZE / sizeof(u8),
 244         },
 245         .rf     = {
 246                 .read           = rt2x00_rf_read,
 247                 .write          = rt2500usb_rf_write,
 248                 .word_size      = sizeof(u32),
 249                 .word_count     = RF_SIZE / sizeof(u32),
 250         },
 251 };
 252 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 253
 254 /*
 255  * Configuration handlers.
 256  */
 257 static void rt2500usb_config_mac_addr(struct rt2x00_dev *rt2x00dev,
 258                                       __le32 *mac)
 259 {
 260         rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, &mac,
 261                                       (3 * sizeof(__le16)));
 262 }
 263
 264 static void rt2500usb_config_bssid(struct rt2x00_dev *rt2x00dev,
 265                                    __le32 *bssid)
 266 {
 267         rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, bssid,
 268                                       (3 * sizeof(__le16)));
 269 }
 270
 271 static void rt2500usb_config_type(struct rt2x00_dev *rt2x00dev, const int type,
 272                                   const int tsf_sync)
 273 {
 274         u16 reg;
 275
 276         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 277
 278         /*
 279          * Enable beacon config
 280          */
 281         rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
 282         rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET,
 283                            (PREAMBLE + get_duration(IEEE80211_HEADER, 20)) >> 6);
 284         if (type == IEEE80211_IF_TYPE_STA)
 285                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW, 0);
 286         else
 287                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW, 2);
 288         rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
 289
 290         /*
 291          * Enable synchronisation.
 292          */
 293         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 294         rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
 295         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 296
 297         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 298         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
 299         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
 300         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
 301         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, tsf_sync);
 302         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 303 }
 304
 305 static void rt2500usb_config_rate(struct rt2x00_dev *rt2x00dev, const int rate)
 306 {
 307         struct ieee80211_conf *conf = &rt2x00dev->hw->conf;
 308         u16 reg;
 309         u16 value;
 310         u16 preamble;
 311
 312         if (DEVICE_GET_RATE_FIELD(rate, PREAMBLE))
 313                 preamble = SHORT_PREAMBLE;
 314         else
 315                 preamble = PREAMBLE;
 316
 317         reg = DEVICE_GET_RATE_FIELD(rate, RATEMASK) & DEV_BASIC_RATEMASK;
 318
 319         rt2500usb_register_write(rt2x00dev, TXRX_CSR11, reg);
 320
 321         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 322         value = ((conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) ?
 323                  SHORT_DIFS : DIFS) +
 324             PLCP + preamble + get_duration(ACK_SIZE, 10);
 325         rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, value);
 326         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 327
 328         rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
 329         if (preamble == SHORT_PREAMBLE)
 330                 rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE, 1);
 331         else
 332                 rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE, 0);
 333         rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
 334 }
 335
 336 static void rt2500usb_config_phymode(struct rt2x00_dev *rt2x00dev,
 337                                      const int phymode)
 338 {
 339         struct ieee80211_hw_mode *mode;
 340         struct ieee80211_rate *rate;
 341
 342         if (phymode == MODE_IEEE80211A)
 343                 rt2x00dev->curr_hwmode = HWMODE_A;
 344         else if (phymode == MODE_IEEE80211B)
 345                 rt2x00dev->curr_hwmode = HWMODE_B;
 346         else
 347                 rt2x00dev->curr_hwmode = HWMODE_G;
 348
 349         mode = &rt2x00dev->hwmodes[rt2x00dev->curr_hwmode];
 350         rate = &mode->rates[mode->num_rates - 1];
 351
 352         rt2500usb_config_rate(rt2x00dev, rate->val2);
 353
 354         if (phymode == MODE_IEEE80211B) {
 355                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x000b);
 356                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x0040);
 357         } else {
 358                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0005);
 359                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x016c);
 360         }
 361 }
 362
 363 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
 364                                      const int index, const int channel,
 365                                      const int txpower)
 366 {
 367         struct rf_channel reg;
 368
 369         /*
 370          * Fill rf_reg structure.
 371          */
 372         memcpy(&reg, &rt2x00dev->spec.channels[index], sizeof(reg));
 373
 374         /*
 375          * Set TXpower.
 376          */
 377         rt2x00_set_field32(&reg.rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 378
 379         /*
 380          * For RT2525E we should first set the channel to half band higher.
 381          */
 382         if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
 383                 static const u32 vals[] = {
 384                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
 385                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
 386                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
 387                         0x00000902, 0x00000906
 388                 };
 389
 390                 rt2500usb_rf_write(rt2x00dev, 2, vals[channel - 1]);
 391                 if (reg.rf4)
 392                         rt2500usb_rf_write(rt2x00dev, 4, reg.rf4);
 393         }
 394
 395         rt2500usb_rf_write(rt2x00dev, 1, reg.rf1);
 396         rt2500usb_rf_write(rt2x00dev, 2, reg.rf2);
 397         rt2500usb_rf_write(rt2x00dev, 3, reg.rf3);
 398         if (reg.rf4)
 399                 rt2500usb_rf_write(rt2x00dev, 4, reg.rf4);
 400 }
 401
 402 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
 403                                      const int txpower)
 404 {
 405         u32 rf3;
 406
 407         rt2x00_rf_read(rt2x00dev, 3, &rf3);
 408         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 409         rt2500usb_rf_write(rt2x00dev, 3, rf3);
 410 }
 411
 412 static void rt2500usb_config_antenna(struct rt2x00_dev *rt2x00dev,
 413                                      const int antenna_tx, const int antenna_rx)
 414 {
 415         u8 r2;
 416         u8 r14;
 417         u16 csr5;
 418         u16 csr6;
 419
 420         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
 421         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
 422         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
 423         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
 424
 425         /*
 426          * Configure the TX antenna.
 427          */
 428         switch (antenna_tx) {
 429         case ANTENNA_SW_DIVERSITY:
 430         case ANTENNA_HW_DIVERSITY:
 431                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
 432                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
 433                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
 434                 break;
 435         case ANTENNA_A:
 436                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
 437                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
 438                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
 439                 break;
 440         case ANTENNA_B:
 441                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
 442                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
 443                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
 444                 break;
 445         }
 446
 447         /*
 448          * Configure the RX antenna.
 449          */
 450         switch (antenna_rx) {
 451         case ANTENNA_SW_DIVERSITY:
 452         case ANTENNA_HW_DIVERSITY:
 453                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
 454                 break;
 455         case ANTENNA_A:
 456                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
 457                 break;
 458         case ANTENNA_B:
 459                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
 460                 break;
 461         }
 462
 463         /*
 464          * RT2525E and RT5222 need to flip TX I/Q
 465          */
 466         if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
 467             rt2x00_rf(&rt2x00dev->chip, RF5222)) {
 468                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
 469                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
 470                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
 471
 472                 /*
 473                  * RT2525E does not need RX I/Q Flip.
 474                  */
 475                 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
 476                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
 477         } else {
 478                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
 479                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
 480         }
 481
 482         rt2500usb_bbp_write(rt2x00dev, 2, r2);
 483         rt2500usb_bbp_write(rt2x00dev, 14, r14);
 484         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
 485         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
 486 }
 487
 488 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
 489                                       const int short_slot_time,
 490                                       const int beacon_int)
 491 {
 492         u16 reg;
 493
 494         rt2500usb_register_write(rt2x00dev, MAC_CSR10,
 495                                  short_slot_time ? SHORT_SLOT_TIME : SLOT_TIME);
 496
 497         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 498         rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL, beacon_int * 4);
 499         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 500 }
 501
 502 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
 503                              const unsigned int flags,
 504                              struct ieee80211_conf *conf)
 505 {
 506         int short_slot_time = conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME;
 507
 508         if (flags & CONFIG_UPDATE_PHYMODE)
 509                 rt2500usb_config_phymode(rt2x00dev, conf->phymode);
 510         if (flags & CONFIG_UPDATE_CHANNEL)
 511                 rt2500usb_config_channel(rt2x00dev, conf->channel_val,
 512                                          conf->channel, conf->power_level);
 513         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
 514                 rt2500usb_config_txpower(rt2x00dev, conf->power_level);
 515         if (flags & CONFIG_UPDATE_ANTENNA)
 516                 rt2500usb_config_antenna(rt2x00dev, conf->antenna_sel_tx,
 517                                          conf->antenna_sel_rx);
 518         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
 519                 rt2500usb_config_duration(rt2x00dev, short_slot_time,
 520                                           conf->beacon_int);
 521 }
 522
 523 /*
 524  * LED functions.
 525  */
 526 static void rt2500usb_enable_led(struct rt2x00_dev *rt2x00dev)
 527 {
 528         u16 reg;
 529
 530         rt2500usb_register_read(rt2x00dev, MAC_CSR21, &reg);
 531         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, 70);
 532         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, 30);
 533         rt2500usb_register_write(rt2x00dev, MAC_CSR21, reg);
 534
 535         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 536
 537         if (rt2x00dev->led_mode == LED_MODE_TXRX_ACTIVITY) {
 538                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 1);
 539                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 540         } else if (rt2x00dev->led_mode == LED_MODE_ASUS) {
 541                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 542                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 1);
 543         } else {
 544                 rt2x00_set_field16(&reg, MAC_CSR20_LINK, 1);
 545                 rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 1);
 546         }
 547
 548         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 549 }
 550
 551 static void rt2500usb_disable_led(struct rt2x00_dev *rt2x00dev)
 552 {
 553         u16 reg;
 554
 555         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 556         rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 557         rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 558         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 559 }
 560
 561 /*
 562  * Link tuning
 563  */
 564 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev)
 565 {
 566         u16 reg;
 567
 568         /*
 569          * Update FCS error count from register.
 570          */
 571         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
 572         rt2x00dev->link.rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
 573
 574         /*
 575          * Update False CCA count from register.
 576          */
 577         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
 578         rt2x00dev->link.false_cca =
 579             rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
 580 }
 581
 582 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
 583 {
 584         u16 eeprom;
 585         u16 value;
 586
 587         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
 588         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
 589         rt2500usb_bbp_write(rt2x00dev, 24, value);
 590
 591         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
 592         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
 593         rt2500usb_bbp_write(rt2x00dev, 25, value);
 594
 595         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
 596         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
 597         rt2500usb_bbp_write(rt2x00dev, 61, value);
 598
 599         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
 600         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
 601         rt2500usb_bbp_write(rt2x00dev, 17, value);
 602
 603         rt2x00dev->link.vgc_level = value;
 604 }
 605
 606 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
 607 {
 608         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
 609         u16 bbp_thresh;
 610         u16 vgc_bound;
 611         u16 sens;
 612         u16 r24;
 613         u16 r25;
 614         u16 r61;
 615         u16 r17_sens;
 616         u8 r17;
 617         u8 up_bound;
 618         u8 low_bound;
 619
 620         /*
 621          * Determine the BBP tuning threshold and correctly
 622          * set BBP 24, 25 and 61.
 623          */
 624         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
 625         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
 626
 627         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
 628         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
 629         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
 630
 631         if ((rssi + bbp_thresh) > 0) {
 632                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
 633                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
 634                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
 635         } else {
 636                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
 637                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
 638                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
 639         }
 640
 641         rt2500usb_bbp_write(rt2x00dev, 24, r24);
 642         rt2500usb_bbp_write(rt2x00dev, 25, r25);
 643         rt2500usb_bbp_write(rt2x00dev, 61, r61);
 644
 645         /*
 646          * Read current r17 value, as well as the sensitivity values
 647          * for the r17 register.
 648          */
 649         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
 650         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
 651
 652         /*
 653          * A too low RSSI will cause too much false CCA which will
 654          * then corrupt the R17 tuning. To remidy this the tuning should
 655          * be stopped (While making sure the R17 value will not exceed limits)
 656          */
 657         if (rssi >= -40) {
 658                 if (r17 != 0x60)
 659                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
 660                 return;
 661         }
 662
 663         /*
 664          * Special big-R17 for short distance
 665          */
 666         if (rssi >= -58) {
 667                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
 668                 if (r17 != sens)
 669                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 670                 return;
 671         }
 672
 673         /*
 674          * Special mid-R17 for middle distance
 675          */
 676         if (rssi >= -74) {
 677                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
 678                 if (r17 != sens)
 679                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 680                 return;
 681         }
 682
 683         /*
 684          * Leave short or middle distance condition, restore r17
 685          * to the dynamic tuning range.
 686          */
 687         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
 688         vgc_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
 689
 690         low_bound = 0x32;
 691         if (rssi >= -77)
 692                 up_bound = vgc_bound;
 693         else
 694                 up_bound = vgc_bound - (-77 - rssi);
 695
 696         if (up_bound < low_bound)
 697                 up_bound = low_bound;
 698
 699         if (r17 > up_bound) {
 700                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
 701                 rt2x00dev->link.vgc_level = up_bound;
 702         } else if (rt2x00dev->link.false_cca > 512 && r17 < up_bound) {
 703                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
 704                 rt2x00dev->link.vgc_level = r17;
 705         } else if (rt2x00dev->link.false_cca < 100 && r17 > low_bound) {
 706                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
 707                 rt2x00dev->link.vgc_level = r17;
 708         }
 709 }
 710
 711 /*
 712  * Initialization functions.
 713  */
 714 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
 715 {
 716         u16 reg;
 717
 718         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
 719                                     USB_MODE_TEST, REGISTER_TIMEOUT);
 720         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
 721                                     0x00f0, REGISTER_TIMEOUT);
 722
 723         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 724         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 725         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 726
 727         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
 728         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
 729
 730         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 731         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
 732         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
 733         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 734         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 735
 736         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 737         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 738         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 739         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 740         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 741
 742         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
 743         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
 744         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
 745         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
 746         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
 747         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
 748
 749         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
 750         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
 751         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
 752         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
 753         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
 754         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
 755
 756         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 757         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
 758         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
 759         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
 760         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
 761         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 762
 763         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 764         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
 765         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
 766         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
 767         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
 768         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 769
 770         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
 771         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
 772
 773         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 774                 return -EBUSY;
 775
 776         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 777         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 778         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 779         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
 780         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 781
 782         if (rt2x00_get_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
 783                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
 784                 reg &= ~0x0002;
 785         } else {
 786                 reg = 0x3002;
 787         }
 788         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
 789
 790         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
 791         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
 792         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
 793         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
 794
 795         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 796         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
 797                            rt2x00dev->rx->data_size);
 798         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
 799
 800         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 801         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 802         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
 803         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 804
 805         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 806         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
 807         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 808
 809         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
 810         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
 811         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
 812
 813         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 814         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
 815         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 816
 817         return 0;
 818 }
 819
 820 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
 821 {
 822         unsigned int i;
 823         u16 eeprom;
 824         u8 value;
 825         u8 reg_id;
 826
 827         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 828                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
 829                 if ((value != 0xff) && (value != 0x00))
 830                         goto continue_csr_init;
 831                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
 832                 udelay(REGISTER_BUSY_DELAY);
 833         }
 834
 835         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
 836         return -EACCES;
 837
 838 continue_csr_init:
 839         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
 840         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
 841         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
 842         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
 843         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
 844         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
 845         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
 846         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
 847         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
 848         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
 849         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
 850         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
 851         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
 852         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
 853         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
 854         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
 855         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
 856         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
 857         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
 858         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
 859         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
 860         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
 861         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
 862         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
 863         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
 864         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
 865         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
 866         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
 867         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
 868         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
 869         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
 870
 871         DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
 872         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 873                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 874
 875                 if (eeprom != 0xffff && eeprom != 0x0000) {
 876                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 877                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 878                         DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
 879                               reg_id, value);
 880                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
 881                 }
 882         }
 883         DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
 884
 885         return 0;
 886 }
 887
 888 /*
 889  * Device state switch handlers.
 890  */
 891 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
 892                                 enum dev_state state)
 893 {
 894         u16 reg;
 895
 896         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 897         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
 898                            state == STATE_RADIO_RX_OFF);
 899         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 900 }
 901
 902 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
 903 {
 904         /*
 905          * Initialize all registers.
 906          */
 907         if (rt2500usb_init_registers(rt2x00dev) ||
 908             rt2500usb_init_bbp(rt2x00dev)) {
 909                 ERROR(rt2x00dev, "Register initialization failed.\n");
 910                 return -EIO;
 911         }
 912
 913         rt2x00usb_enable_radio(rt2x00dev);
 914
 915         /*
 916          * Enable LED
 917          */
 918         rt2500usb_enable_led(rt2x00dev);
 919
 920         return 0;
 921 }
 922
 923 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
 924 {
 925         /*
 926          * Disable LED
 927          */
 928         rt2500usb_disable_led(rt2x00dev);
 929
 930         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
 931         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
 932
 933         /*
 934          * Disable synchronisation.
 935          */
 936         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 937
 938         rt2x00usb_disable_radio(rt2x00dev);
 939 }
 940
 941 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
 942                                enum dev_state state)
 943 {
 944         u16 reg;
 945         u16 reg2;
 946         unsigned int i;
 947         char put_to_sleep;
 948         char bbp_state;
 949         char rf_state;
 950
 951         put_to_sleep = (state != STATE_AWAKE);
 952
 953         reg = 0;
 954         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
 955         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
 956         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
 957         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 958         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
 959         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 960
 961         /*
 962          * Device is not guaranteed to be in the requested state yet.
 963          * We must wait until the register indicates that the
 964          * device has entered the correct state.
 965          */
 966         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 967                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
 968                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
 969                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
 970                 if (bbp_state == state && rf_state == state)
 971                         return 0;
 972                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 973                 msleep(30);
 974         }
 975
 976         NOTICE(rt2x00dev, "Device failed to enter state %d, "
 977                "current device state: bbp %d and rf %d.\n",
 978                state, bbp_state, rf_state);
 979
 980         return -EBUSY;
 981 }
 982
 983 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
 984                                       enum dev_state state)
 985 {
 986         int retval = 0;
 987
 988         switch (state) {
 989         case STATE_RADIO_ON:
 990                 retval = rt2500usb_enable_radio(rt2x00dev);
 991                 break;
 992         case STATE_RADIO_OFF:
 993                 rt2500usb_disable_radio(rt2x00dev);
 994                 break;
 995         case STATE_RADIO_RX_ON:
 996         case STATE_RADIO_RX_OFF:
 997                 rt2500usb_toggle_rx(rt2x00dev, state);
 998                 break;
 999         case STATE_DEEP_SLEEP:
1000         case STATE_SLEEP:
1001         case STATE_STANDBY:
1002         case STATE_AWAKE:
1003                 retval = rt2500usb_set_state(rt2x00dev, state);
1004                 break;
1005         default:
1006                 retval = -ENOTSUPP;
1007                 break;
1008         }
1009
1010         return retval;
1011 }
1012
1013 /*
1014  * TX descriptor initialization
1015  */
1016 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1017                                     struct data_desc *txd,
1018                                     struct txdata_entry_desc *desc,
1019                                     struct ieee80211_hdr *ieee80211hdr,
1020                                     unsigned int length,
1021                                     struct ieee80211_tx_control *control)
1022 {
1023         u32 word;
1024
1025         /*
1026          * Start writing the descriptor words.
1027          */
1028         rt2x00_desc_read(txd, 1, &word);
1029         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1030         rt2x00_set_field32(&word, TXD_W1_AIFS, desc->aifs);
1031         rt2x00_set_field32(&word, TXD_W1_CWMIN, desc->cw_min);
1032         rt2x00_set_field32(&word, TXD_W1_CWMAX, desc->cw_max);
1033         rt2x00_desc_write(txd, 1, word);
1034
1035         rt2x00_desc_read(txd, 2, &word);
1036         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, desc->signal);
1037         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, desc->service);
1038         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, desc->length_low);
1039         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, desc->length_high);
1040         rt2x00_desc_write(txd, 2, word);
1041
1042         rt2x00_desc_read(txd, 0, &word);
1043         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, control->retry_limit);
1044         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1045                            test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
1046         rt2x00_set_field32(&word, TXD_W0_ACK,
1047                            !(control->flags & IEEE80211_TXCTL_NO_ACK));
1048         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1049                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
1050         rt2x00_set_field32(&word, TXD_W0_OFDM,
1051                            test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
1052         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1053                            !!(control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT));
1054         rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
1055         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, length);
1056         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1057         rt2x00_desc_write(txd, 0, word);
1058 }
1059
1060 /*
1061  * TX data initialization
1062  */
1063 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1064                                     unsigned int queue)
1065 {
1066         u16 reg;
1067
1068         if (queue != IEEE80211_TX_QUEUE_BEACON)
1069                 return;
1070
1071         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1072         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1073                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1074                 /*
1075                  * Beacon generation will fail initially.
1076                  * To prevent this we need to register the TXRX_CSR19
1077                  * register several times.
1078                  */
1079                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1080                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1081                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1082                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1083                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1084         }
1085 }
1086
1087 /*
1088  * RX control handlers
1089  */
1090 static void rt2500usb_fill_rxdone(struct data_entry *entry,
1091                                   struct rxdata_entry_desc *desc)
1092 {
1093         struct urb *urb = entry->priv;
1094         struct data_desc *rxd = (struct data_desc *)(entry->skb->data +
1095                                                      (urb->actual_length -
1096                                                       entry->ring->desc_size));
1097         u32 word0;
1098         u32 word1;
1099
1100         rt2x00_desc_read(rxd, 0, &word0);
1101         rt2x00_desc_read(rxd, 1, &word1);
1102
1103         desc->flags = 0;
1104         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1105                 desc->flags |= RX_FLAG_FAILED_FCS_CRC;
1106         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1107                 desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1108
1109         /*
1110          * Obtain the status about this packet.
1111          */
1112         desc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1113         desc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1114             entry->ring->rt2x00dev->rssi_offset;
1115         desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1116         desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1117
1118         return;
1119 }
1120
1121 /*
1122  * Interrupt functions.
1123  */
1124 static void rt2500usb_beacondone(struct urb *urb)
1125 {
1126         struct data_entry *entry = (struct data_entry *)urb->context;
1127         struct data_ring *ring = entry->ring;
1128
1129         if (!test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags))
1130                 return;
1131
1132         /*
1133          * Check if this was the guardian beacon,
1134          * if that was the case we need to send the real beacon now.
1135          * Otherwise we should free the sk_buffer, the device
1136          * should be doing the rest of the work now.
1137          */
1138         if (ring->index == 1) {
1139                 rt2x00_ring_index_done_inc(ring);
1140                 entry = rt2x00_get_data_entry(ring);
1141                 usb_submit_urb(entry->priv, GFP_ATOMIC);
1142                 rt2x00_ring_index_inc(ring);
1143         } else if (ring->index_done == 1) {
1144                 entry = rt2x00_get_data_entry_done(ring);
1145                 if (entry->skb) {
1146                         dev_kfree_skb(entry->skb);
1147                         entry->skb = NULL;
1148                 }
1149                 rt2x00_ring_index_done_inc(ring);
1150         }
1151 }
1152
1153 /*
1154  * Device probe functions.
1155  */
1156 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1157 {
1158         u16 word;
1159         u8 *mac;
1160
1161         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1162
1163         /*
1164          * Start validation of the data that has been read.
1165          */
1166         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1167         if (!is_valid_ether_addr(mac)) {
1168                 DECLARE_MAC_BUF(macbuf);
1169
1170                 random_ether_addr(mac);
1171                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1172         }
1173
1174         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1175         if (word == 0xffff) {
1176                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1177                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT, 0);
1178                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT, 0);
1179                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE, 0);
1180                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1181                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1182                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1183                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1184                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1185         }
1186
1187         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1188         if (word == 0xffff) {
1189                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1190                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1191                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1192                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1193                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1194         }
1195
1196         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1197         if (word == 0xffff) {
1198                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1199                                    DEFAULT_RSSI_OFFSET);
1200                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1201                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1202         }
1203
1204         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1205         if (word == 0xffff) {
1206                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1207                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1208                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1209         }
1210
1211         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1212         if (word == 0xffff) {
1213                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1214                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1215                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1216         }
1217
1218         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1219         if (word == 0xffff) {
1220                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1221                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1222                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1223                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1224         }
1225
1226         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1227         if (word == 0xffff) {
1228                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1229                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1230                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1231                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1232         }
1233
1234         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1235         if (word == 0xffff) {
1236                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1237                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1238                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1239                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1240         }
1241
1242         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1243         if (word == 0xffff) {
1244                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1245                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1246                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1247                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1248         }
1249
1250         return 0;
1251 }
1252
1253 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1254 {
1255         u16 reg;
1256         u16 value;
1257         u16 eeprom;
1258
1259         /*
1260          * Read EEPROM word for configuration.
1261          */
1262         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1263
1264         /*
1265          * Identify RF chipset.
1266          */
1267         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1268         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1269         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1270
1271         if (rt2x00_rev(&rt2x00dev->chip, 0xffff0)) {
1272                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1273                 return -ENODEV;
1274         }
1275
1276         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1277             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1278             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1279             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1280             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1281             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1282                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1283                 return -ENODEV;
1284         }
1285
1286         /*
1287          * Identify default antenna configuration.
1288          */
1289         rt2x00dev->hw->conf.antenna_sel_tx =
1290             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1291         rt2x00dev->hw->conf.antenna_sel_rx =
1292             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1293
1294         /*
1295          * Store led mode, for correct led behaviour.
1296          */
1297         rt2x00dev->led_mode =
1298             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1299
1300         /*
1301          * Check if the BBP tuning should be disabled.
1302          */
1303         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1304         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1305                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1306
1307         /*
1308          * Read the RSSI <-> dBm offset information.
1309          */
1310         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1311         rt2x00dev->rssi_offset =
1312             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1313
1314         return 0;
1315 }
1316
1317 /*
1318  * RF value list for RF2522
1319  * Supports: 2.4 GHz
1320  */
1321 static const struct rf_channel rf_vals_bg_2522[] = {
1322         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1323         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1324         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1325         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1326         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1327         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1328         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1329         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1330         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1331         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1332         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1333         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1334         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1335         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1336 };
1337
1338 /*
1339  * RF value list for RF2523
1340  * Supports: 2.4 GHz
1341  */
1342 static const struct rf_channel rf_vals_bg_2523[] = {
1343         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1344         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1345         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1346         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1347         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1348         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1349         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1350         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1351         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1352         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1353         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1354         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1355         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1356         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1357 };
1358
1359 /*
1360  * RF value list for RF2524
1361  * Supports: 2.4 GHz
1362  */
1363 static const struct rf_channel rf_vals_bg_2524[] = {
1364         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1365         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1366         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1367         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1368         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1369         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1370         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1371         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1372         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1373         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1374         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1375         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1376         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1377         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1378 };
1379
1380 /*
1381  * RF value list for RF2525
1382  * Supports: 2.4 GHz
1383  */
1384 static const struct rf_channel rf_vals_bg_2525[] = {
1385         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1386         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1387         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1388         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1389         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1390         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1391         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1392         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1393         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1394         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1395         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1396         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1397         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1398         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1399 };
1400
1401 /*
1402  * RF value list for RF2525e
1403  * Supports: 2.4 GHz
1404  */
1405 static const struct rf_channel rf_vals_bg_2525e[] = {
1406         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1407         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1408         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1409         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1410         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1411         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1412         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1413         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1414         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1415         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1416         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1417         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1418         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1419         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1420 };
1421
1422 /*
1423  * RF value list for RF5222
1424  * Supports: 2.4 GHz & 5.2 GHz
1425  */
1426 static const struct rf_channel rf_vals_5222[] = {
1427         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1428         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1429         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1430         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1431         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1432         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1433         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1434         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1435         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1436         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1437         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1438         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1439         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1440         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1441
1442         /* 802.11 UNI / HyperLan 2 */
1443         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1444         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1445         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1446         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1447         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1448         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1449         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1450         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1451
1452         /* 802.11 HyperLan 2 */
1453         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1454         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1455         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1456         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1457         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1458         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1459         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1460         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1461         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1462         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1463
1464         /* 802.11 UNII */
1465         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1466         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1467         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1468         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1469         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1470 };
1471
1472 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1473 {
1474         struct hw_mode_spec *spec = &rt2x00dev->spec;
1475         u8 *txpower;
1476         unsigned int i;
1477
1478         /*
1479          * Initialize all hw fields.
1480          */
1481         rt2x00dev->hw->flags =
1482             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1483             IEEE80211_HW_RX_INCLUDES_FCS |
1484             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1485         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1486         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1487         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1488         rt2x00dev->hw->queues = 2;
1489
1490         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1491         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1492                                 rt2x00_eeprom_addr(rt2x00dev,
1493                                                    EEPROM_MAC_ADDR_0));
1494
1495         /*
1496          * Convert tx_power array in eeprom.
1497          */
1498         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1499         for (i = 0; i < 14; i++)
1500                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1501
1502         /*
1503          * Initialize hw_mode information.
1504          */
1505         spec->num_modes = 2;
1506         spec->num_rates = 12;
1507         spec->tx_power_a = NULL;
1508         spec->tx_power_bg = txpower;
1509         spec->tx_power_default = DEFAULT_TXPOWER;
1510
1511         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1512                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1513                 spec->channels = rf_vals_bg_2522;
1514         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1515                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1516                 spec->channels = rf_vals_bg_2523;
1517         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1518                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1519                 spec->channels = rf_vals_bg_2524;
1520         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1521                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1522                 spec->channels = rf_vals_bg_2525;
1523         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1524                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1525                 spec->channels = rf_vals_bg_2525e;
1526         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1527                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1528                 spec->channels = rf_vals_5222;
1529                 spec->num_modes = 3;
1530         }
1531 }
1532
1533 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1534 {
1535         int retval;
1536
1537         /*
1538          * Allocate eeprom data.
1539          */
1540         retval = rt2500usb_validate_eeprom(rt2x00dev);
1541         if (retval)
1542                 return retval;
1543
1544         retval = rt2500usb_init_eeprom(rt2x00dev);
1545         if (retval)
1546                 return retval;
1547
1548         /*
1549          * Initialize hw specifications.
1550          */
1551         rt2500usb_probe_hw_mode(rt2x00dev);
1552
1553         /*
1554          * This device requires the beacon ring
1555          */
1556         __set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
1557
1558         /*
1559          * Set the rssi offset.
1560          */
1561         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1562
1563         return 0;
1564 }
1565
1566 /*
1567  * IEEE80211 stack callback functions.
1568  */
1569 static void rt2500usb_configure_filter(struct ieee80211_hw *hw,
1570                                        unsigned int changed_flags,
1571                                        unsigned int *total_flags,
1572                                        int mc_count,
1573                                        struct dev_addr_list *mc_list)
1574 {
1575         struct rt2x00_dev *rt2x00dev = hw->priv;
1576         struct interface *intf = &rt2x00dev->interface;
1577         u16 reg;
1578
1579         /*
1580          * Mask off any flags we are going to ignore from
1581          * the total_flags field.
1582          */
1583         *total_flags &=
1584             FIF_ALLMULTI |
1585             FIF_FCSFAIL |
1586             FIF_PLCPFAIL |
1587             FIF_CONTROL |
1588             FIF_OTHER_BSS |
1589             FIF_PROMISC_IN_BSS;
1590
1591         /*
1592          * Apply some rules to the filters:
1593          * - Some filters imply different filters to be set.
1594          * - Some things we can't filter out at all.
1595          * - Some filters are set based on interface type.
1596          */
1597         if (mc_count)
1598                 *total_flags |= FIF_ALLMULTI;
1599         if (*total_flags & FIF_OTHER_BSS ||
1600             *total_flags & FIF_PROMISC_IN_BSS)
1601                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1602         if (is_interface_type(intf, IEEE80211_IF_TYPE_AP))
1603                 *total_flags |= FIF_PROMISC_IN_BSS;
1604
1605         /*
1606          * Check if there is any work left for us.
1607          */
1608         if (intf->filter == *total_flags)
1609                 return;
1610         intf->filter = *total_flags;
1611
1612         /*
1613          * When in atomic context, reschedule and let rt2x00lib
1614          * call this function again.
1615          */
1616         if (in_atomic()) {
1617                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1618                 return;
1619         }
1620
1621         /*
1622          * Start configuration steps.
1623          * Note that the version error will always be dropped
1624          * and broadcast frames will always be accepted since
1625          * there is no filter for it at this time.
1626          */
1627         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
1628         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
1629                            !(*total_flags & FIF_FCSFAIL));
1630         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
1631                            !(*total_flags & FIF_PLCPFAIL));
1632         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
1633                            !(*total_flags & FIF_CONTROL));
1634         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
1635                            !(*total_flags & FIF_PROMISC_IN_BSS));
1636         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
1637                            !(*total_flags & FIF_PROMISC_IN_BSS));
1638         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
1639         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
1640                            !(*total_flags & FIF_ALLMULTI));
1641         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
1642         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
1643 }
1644
1645 static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
1646                                    struct sk_buff *skb,
1647                                    struct ieee80211_tx_control *control)
1648 {
1649         struct rt2x00_dev *rt2x00dev = hw->priv;
1650         struct usb_device *usb_dev =
1651             interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
1652         struct data_ring *ring =
1653             rt2x00lib_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1654         struct data_entry *beacon;
1655         struct data_entry *guardian;
1656         int length;
1657
1658         /*
1659          * Just in case the ieee80211 doesn't set this,
1660          * but we need this queue set for the descriptor
1661          * initialization.
1662          */
1663         control->queue = IEEE80211_TX_QUEUE_BEACON;
1664
1665         /*
1666          * Obtain 2 entries, one for the guardian byte,
1667          * the second for the actual beacon.
1668          */
1669         guardian = rt2x00_get_data_entry(ring);
1670         rt2x00_ring_index_inc(ring);
1671         beacon = rt2x00_get_data_entry(ring);
1672
1673         /*
1674          * First we create the beacon.
1675          */
1676         skb_push(skb, ring->desc_size);
1677         rt2x00lib_write_tx_desc(rt2x00dev, (struct data_desc *)skb->data,
1678                                 (struct ieee80211_hdr *)(skb->data +
1679                                                          ring->desc_size),
1680                                 skb->len - ring->desc_size, control);
1681
1682         /*
1683          * Length passed to usb_fill_urb cannot be an odd number,
1684          * so add 1 byte to make it even.
1685          */
1686         length = skb->len;
1687         if (length % 2)
1688                 length++;
1689
1690         usb_fill_bulk_urb(beacon->priv, usb_dev,
1691                           usb_sndbulkpipe(usb_dev, 1),
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,
1703                           usb_sndbulkpipe(usb_dev, 1),
1704                           &guardian->flags, 1, rt2500usb_beacondone, guardian);
1705
1706         /*
1707          * Send out the guardian byte.
1708          */
1709         usb_submit_urb(guardian->priv, GFP_ATOMIC);
1710
1711         /*
1712          * Enable beacon generation.
1713          */
1714         rt2500usb_kick_tx_queue(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1715
1716         return 0;
1717 }
1718
1719 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1720         .tx                     = rt2x00mac_tx,
1721         .start                  = rt2x00mac_start,
1722         .stop                   = rt2x00mac_stop,
1723         .add_interface          = rt2x00mac_add_interface,
1724         .remove_interface       = rt2x00mac_remove_interface,
1725         .config                 = rt2x00mac_config,
1726         .config_interface       = rt2x00mac_config_interface,
1727         .configure_filter       = rt2500usb_configure_filter,
1728         .get_stats              = rt2x00mac_get_stats,
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         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1745         .fill_rxdone            = rt2500usb_fill_rxdone,
1746         .config_mac_addr        = rt2500usb_config_mac_addr,
1747         .config_bssid           = rt2500usb_config_bssid,
1748         .config_type            = rt2500usb_config_type,
1749         .config                 = rt2500usb_config,
1750 };
1751
1752 static const struct rt2x00_ops rt2500usb_ops = {
1753         .name           = DRV_NAME,
1754         .rxd_size       = RXD_DESC_SIZE,
1755         .txd_size       = TXD_DESC_SIZE,
1756         .eeprom_size    = EEPROM_SIZE,
1757         .rf_size        = RF_SIZE,
1758         .lib            = &rt2500usb_rt2x00_ops,
1759         .hw             = &rt2500usb_mac80211_ops,
1760 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1761         .debugfs        = &rt2500usb_rt2x00debug,
1762 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1763 };
1764
1765 /*
1766  * rt2500usb module information.
1767  */
1768 static struct usb_device_id rt2500usb_device_table[] = {
1769         /* ASUS */
1770         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1771         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1772         /* Belkin */
1773         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1774         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1775         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1776         /* Cisco Systems */
1777         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1778         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1779         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1780         /* Conceptronic */
1781         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1782         /* D-LINK */
1783         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1784         /* Gigabyte */
1785         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1786         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1787         /* Hercules */
1788         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1789         /* Melco */
1790         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1791         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1792         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1793         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1794
1795         /* MSI */
1796         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1797         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1798         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1799         /* Ralink */
1800         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1801         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1802         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1803         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1804         /* Siemens */
1805         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1806         /* SMC */
1807         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1808         /* Spairon */
1809         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1810         /* Trust */
1811         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1812         /* Zinwell */
1813         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1814         { 0, }
1815 };
1816
1817 MODULE_AUTHOR(DRV_PROJECT);
1818 MODULE_VERSION(DRV_VERSION);
1819 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1820 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1821 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1822 MODULE_LICENSE("GPL");
1823
1824 static struct usb_driver rt2500usb_driver = {
1825         .name           = DRV_NAME,
1826         .id_table       = rt2500usb_device_table,
1827         .probe          = rt2x00usb_probe,
1828         .disconnect     = rt2x00usb_disconnect,
1829         .suspend        = rt2x00usb_suspend,
1830         .resume         = rt2x00usb_resume,
1831 };
1832
1833 static int __init rt2500usb_init(void)
1834 {
1835         return usb_register(&rt2500usb_driver);
1836 }
1837
1838 static void __exit rt2500usb_exit(void)
1839 {
1840         usb_deregister(&rt2500usb_driver);
1841 }
1842
1843 module_init(rt2500usb_init);
1844 module_exit(rt2500usb_exit);