SAFE public projects git trees. - safe/jmp/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 #include <linux/delay.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/init.h>
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/usb.h>
  33
  34 #include "rt2x00.h"
  35 #include "rt2x00usb.h"
  36 #include "rt2500usb.h"
  37
  38 /*
  39  * Register access.
  40  * All access to the CSR registers will go through the methods
  41  * rt2500usb_register_read and rt2500usb_register_write.
  42  * BBP and RF register require indirect register access,
  43  * and use the CSR registers BBPCSR and RFCSR to achieve this.
  44  * These indirect registers work with busy bits,
  45  * and we will try maximal REGISTER_BUSY_COUNT times to access
  46  * the register while taking a REGISTER_BUSY_DELAY us delay
  47  * between each attampt. When the busy bit is still set at that time,
  48  * the access attempt is considered to have failed,
  49  * and we will print an error.
  50  * If the usb_cache_mutex is already held then the _lock variants must
  51  * be used instead.
  52  */
  53 static inline void rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
  54                                            const unsigned int offset,
  55                                            u16 *value)
  56 {
  57         __le16 reg;
  58         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  59                                       USB_VENDOR_REQUEST_IN, offset,
  60                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
  61         *value = le16_to_cpu(reg);
  62 }
  63
  64 static inline void rt2500usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
  65                                                 const unsigned int offset,
  66                                                 u16 *value)
  67 {
  68         __le16 reg;
  69         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
  70                                        USB_VENDOR_REQUEST_IN, offset,
  71                                        &reg, sizeof(u16), REGISTER_TIMEOUT);
  72         *value = le16_to_cpu(reg);
  73 }
  74
  75 static inline void rt2500usb_register_multiread(struct rt2x00_dev *rt2x00dev,
  76                                                 const unsigned int offset,
  77                                                 void *value, const u16 length)
  78 {
  79         int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
  80         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
  81                                       USB_VENDOR_REQUEST_IN, offset,
  82                                       value, length, timeout);
  83 }
  84
  85 static inline void rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
  86                                             const unsigned int offset,
  87                                             u16 value)
  88 {
  89         __le16 reg = cpu_to_le16(value);
  90         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
  91                                       USB_VENDOR_REQUEST_OUT, offset,
  92                                       &reg, sizeof(u16), REGISTER_TIMEOUT);
  93 }
  94
  95 static inline void rt2500usb_register_write_lock(struct rt2x00_dev *rt2x00dev,
  96                                                  const unsigned int offset,
  97                                                  u16 value)
  98 {
  99         __le16 reg = cpu_to_le16(value);
 100         rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_WRITE,
 101                                        USB_VENDOR_REQUEST_OUT, offset,
 102                                        &reg, sizeof(u16), REGISTER_TIMEOUT);
 103 }
 104
 105 static inline void rt2500usb_register_multiwrite(struct rt2x00_dev *rt2x00dev,
 106                                                  const unsigned int offset,
 107                                                  void *value, const u16 length)
 108 {
 109         int timeout = REGISTER_TIMEOUT * (length / sizeof(u16));
 110         rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_WRITE,
 111                                       USB_VENDOR_REQUEST_OUT, offset,
 112                                       value, length, timeout);
 113 }
 114
 115 static u16 rt2500usb_bbp_check(struct rt2x00_dev *rt2x00dev)
 116 {
 117         u16 reg;
 118         unsigned int i;
 119
 120         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 121                 rt2500usb_register_read_lock(rt2x00dev, PHY_CSR8, &reg);
 122                 if (!rt2x00_get_field16(reg, PHY_CSR8_BUSY))
 123                         break;
 124                 udelay(REGISTER_BUSY_DELAY);
 125         }
 126
 127         return reg;
 128 }
 129
 130 static void rt2500usb_bbp_write(struct rt2x00_dev *rt2x00dev,
 131                                 const unsigned int word, const u8 value)
 132 {
 133         u16 reg;
 134
 135         mutex_lock(&rt2x00dev->usb_cache_mutex);
 136
 137         /*
 138          * Wait until the BBP becomes ready.
 139          */
 140         reg = rt2500usb_bbp_check(rt2x00dev);
 141         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 142                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Write failed.\n");
 143                 mutex_unlock(&rt2x00dev->usb_cache_mutex);
 144                 return;
 145         }
 146
 147         /*
 148          * Write the data into the BBP.
 149          */
 150         reg = 0;
 151         rt2x00_set_field16(&reg, PHY_CSR7_DATA, value);
 152         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 153         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 0);
 154
 155         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
 156
 157         mutex_unlock(&rt2x00dev->usb_cache_mutex);
 158 }
 159
 160 static void rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
 161                                const unsigned int word, u8 *value)
 162 {
 163         u16 reg;
 164
 165         mutex_lock(&rt2x00dev->usb_cache_mutex);
 166
 167         /*
 168          * Wait until the BBP becomes ready.
 169          */
 170         reg = rt2500usb_bbp_check(rt2x00dev);
 171         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 172                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
 173                 return;
 174         }
 175
 176         /*
 177          * Write the request into the BBP.
 178          */
 179         reg = 0;
 180         rt2x00_set_field16(&reg, PHY_CSR7_REG_ID, word);
 181         rt2x00_set_field16(&reg, PHY_CSR7_READ_CONTROL, 1);
 182
 183         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR7, reg);
 184
 185         /*
 186          * Wait until the BBP becomes ready.
 187          */
 188         reg = rt2500usb_bbp_check(rt2x00dev);
 189         if (rt2x00_get_field16(reg, PHY_CSR8_BUSY)) {
 190                 ERROR(rt2x00dev, "PHY_CSR8 register busy. Read failed.\n");
 191                 *value = 0xff;
 192                 mutex_unlock(&rt2x00dev->usb_cache_mutex);
 193                 return;
 194         }
 195
 196         rt2500usb_register_read_lock(rt2x00dev, PHY_CSR7, &reg);
 197         *value = rt2x00_get_field16(reg, PHY_CSR7_DATA);
 198
 199         mutex_unlock(&rt2x00dev->usb_cache_mutex);
 200 }
 201
 202 static void rt2500usb_rf_write(struct rt2x00_dev *rt2x00dev,
 203                                const unsigned int word, const u32 value)
 204 {
 205         u16 reg;
 206         unsigned int i;
 207
 208         if (!word)
 209                 return;
 210
 211         mutex_lock(&rt2x00dev->usb_cache_mutex);
 212
 213         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 214                 rt2500usb_register_read_lock(rt2x00dev, PHY_CSR10, &reg);
 215                 if (!rt2x00_get_field16(reg, PHY_CSR10_RF_BUSY))
 216                         goto rf_write;
 217                 udelay(REGISTER_BUSY_DELAY);
 218         }
 219
 220         mutex_unlock(&rt2x00dev->usb_cache_mutex);
 221         ERROR(rt2x00dev, "PHY_CSR10 register busy. Write failed.\n");
 222         return;
 223
 224 rf_write:
 225         reg = 0;
 226         rt2x00_set_field16(&reg, PHY_CSR9_RF_VALUE, value);
 227         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR9, reg);
 228
 229         reg = 0;
 230         rt2x00_set_field16(&reg, PHY_CSR10_RF_VALUE, value >> 16);
 231         rt2x00_set_field16(&reg, PHY_CSR10_RF_NUMBER_OF_BITS, 20);
 232         rt2x00_set_field16(&reg, PHY_CSR10_RF_IF_SELECT, 0);
 233         rt2x00_set_field16(&reg, PHY_CSR10_RF_BUSY, 1);
 234
 235         rt2500usb_register_write_lock(rt2x00dev, PHY_CSR10, reg);
 236         rt2x00_rf_write(rt2x00dev, word, value);
 237
 238         mutex_unlock(&rt2x00dev->usb_cache_mutex);
 239 }
 240
 241 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 242 #define CSR_OFFSET(__word)      ( CSR_REG_BASE + ((__word) * sizeof(u16)) )
 243
 244 static void rt2500usb_read_csr(struct rt2x00_dev *rt2x00dev,
 245                                const unsigned int word, u32 *data)
 246 {
 247         rt2500usb_register_read(rt2x00dev, CSR_OFFSET(word), (u16 *) data);
 248 }
 249
 250 static void rt2500usb_write_csr(struct rt2x00_dev *rt2x00dev,
 251                                 const unsigned int word, u32 data)
 252 {
 253         rt2500usb_register_write(rt2x00dev, CSR_OFFSET(word), data);
 254 }
 255
 256 static const struct rt2x00debug rt2500usb_rt2x00debug = {
 257         .owner  = THIS_MODULE,
 258         .csr    = {
 259                 .read           = rt2500usb_read_csr,
 260                 .write          = rt2500usb_write_csr,
 261                 .word_size      = sizeof(u16),
 262                 .word_count     = CSR_REG_SIZE / sizeof(u16),
 263         },
 264         .eeprom = {
 265                 .read           = rt2x00_eeprom_read,
 266                 .write          = rt2x00_eeprom_write,
 267                 .word_size      = sizeof(u16),
 268                 .word_count     = EEPROM_SIZE / sizeof(u16),
 269         },
 270         .bbp    = {
 271                 .read           = rt2500usb_bbp_read,
 272                 .write          = rt2500usb_bbp_write,
 273                 .word_size      = sizeof(u8),
 274                 .word_count     = BBP_SIZE / sizeof(u8),
 275         },
 276         .rf     = {
 277                 .read           = rt2x00_rf_read,
 278                 .write          = rt2500usb_rf_write,
 279                 .word_size      = sizeof(u32),
 280                 .word_count     = RF_SIZE / sizeof(u32),
 281         },
 282 };
 283 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
 284
 285 /*
 286  * Configuration handlers.
 287  */
 288 static void rt2500usb_config_mac_addr(struct rt2x00_dev *rt2x00dev,
 289                                       __le32 *mac)
 290 {
 291         rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR2, mac,
 292                                       (3 * sizeof(__le16)));
 293 }
 294
 295 static void rt2500usb_config_bssid(struct rt2x00_dev *rt2x00dev,
 296                                    __le32 *bssid)
 297 {
 298         rt2500usb_register_multiwrite(rt2x00dev, MAC_CSR5, bssid,
 299                                       (3 * sizeof(__le16)));
 300 }
 301
 302 static void rt2500usb_config_type(struct rt2x00_dev *rt2x00dev, const int type,
 303                                   const int tsf_sync)
 304 {
 305         u16 reg;
 306
 307         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 308
 309         /*
 310          * Enable beacon config
 311          */
 312         rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
 313         rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET,
 314                            (PREAMBLE + get_duration(IEEE80211_HEADER, 20)) >> 6);
 315         if (type == IEEE80211_IF_TYPE_STA)
 316                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW, 0);
 317         else
 318                 rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW, 2);
 319         rt2500usb_register_write(rt2x00dev, TXRX_CSR20, reg);
 320
 321         /*
 322          * Enable synchronisation.
 323          */
 324         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 325         rt2x00_set_field16(&reg, TXRX_CSR18_OFFSET, 0);
 326         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 327
 328         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
 329         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_COUNT, 1);
 330         rt2x00_set_field16(&reg, TXRX_CSR19_TBCN, 1);
 331         rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 0);
 332         rt2x00_set_field16(&reg, TXRX_CSR19_TSF_SYNC, tsf_sync);
 333         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
 334 }
 335
 336 static void rt2500usb_config_preamble(struct rt2x00_dev *rt2x00dev,
 337                                       const int short_preamble,
 338                                       const int ack_timeout,
 339                                       const int ack_consume_time)
 340 {
 341         u16 reg;
 342
 343         /*
 344          * When in atomic context, reschedule and let rt2x00lib
 345          * call this function again.
 346          */
 347         if (in_atomic()) {
 348                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->config_work);
 349                 return;
 350         }
 351
 352         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 353         rt2x00_set_field16(&reg, TXRX_CSR1_ACK_TIMEOUT, ack_timeout);
 354         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 355
 356         rt2500usb_register_read(rt2x00dev, TXRX_CSR10, &reg);
 357         rt2x00_set_field16(&reg, TXRX_CSR10_AUTORESPOND_PREAMBLE,
 358                            !!short_preamble);
 359         rt2500usb_register_write(rt2x00dev, TXRX_CSR10, reg);
 360 }
 361
 362 static void rt2500usb_config_phymode(struct rt2x00_dev *rt2x00dev,
 363                                      const int phymode,
 364                                      const int basic_rate_mask)
 365 {
 366         rt2500usb_register_write(rt2x00dev, TXRX_CSR11, basic_rate_mask);
 367
 368         if (phymode == HWMODE_B) {
 369                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x000b);
 370                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x0040);
 371         } else {
 372                 rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0005);
 373                 rt2500usb_register_write(rt2x00dev, MAC_CSR12, 0x016c);
 374         }
 375 }
 376
 377 static void rt2500usb_config_channel(struct rt2x00_dev *rt2x00dev,
 378                                      struct rf_channel *rf, const int txpower)
 379 {
 380         /*
 381          * Set TXpower.
 382          */
 383         rt2x00_set_field32(&rf->rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 384
 385         /*
 386          * For RT2525E we should first set the channel to half band higher.
 387          */
 388         if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
 389                 static const u32 vals[] = {
 390                         0x000008aa, 0x000008ae, 0x000008ae, 0x000008b2,
 391                         0x000008b2, 0x000008b6, 0x000008b6, 0x000008ba,
 392                         0x000008ba, 0x000008be, 0x000008b7, 0x00000902,
 393                         0x00000902, 0x00000906
 394                 };
 395
 396                 rt2500usb_rf_write(rt2x00dev, 2, vals[rf->channel - 1]);
 397                 if (rf->rf4)
 398                         rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
 399         }
 400
 401         rt2500usb_rf_write(rt2x00dev, 1, rf->rf1);
 402         rt2500usb_rf_write(rt2x00dev, 2, rf->rf2);
 403         rt2500usb_rf_write(rt2x00dev, 3, rf->rf3);
 404         if (rf->rf4)
 405                 rt2500usb_rf_write(rt2x00dev, 4, rf->rf4);
 406 }
 407
 408 static void rt2500usb_config_txpower(struct rt2x00_dev *rt2x00dev,
 409                                      const int txpower)
 410 {
 411         u32 rf3;
 412
 413         rt2x00_rf_read(rt2x00dev, 3, &rf3);
 414         rt2x00_set_field32(&rf3, RF3_TXPOWER, TXPOWER_TO_DEV(txpower));
 415         rt2500usb_rf_write(rt2x00dev, 3, rf3);
 416 }
 417
 418 static void rt2500usb_config_antenna(struct rt2x00_dev *rt2x00dev,
 419                                      struct antenna_setup *ant)
 420 {
 421         u8 r2;
 422         u8 r14;
 423         u16 csr5;
 424         u16 csr6;
 425
 426         rt2500usb_bbp_read(rt2x00dev, 2, &r2);
 427         rt2500usb_bbp_read(rt2x00dev, 14, &r14);
 428         rt2500usb_register_read(rt2x00dev, PHY_CSR5, &csr5);
 429         rt2500usb_register_read(rt2x00dev, PHY_CSR6, &csr6);
 430
 431         /*
 432          * Configure the TX antenna.
 433          */
 434         switch (ant->tx) {
 435         case ANTENNA_HW_DIVERSITY:
 436                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 1);
 437                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 1);
 438                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 1);
 439                 break;
 440         case ANTENNA_A:
 441                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 0);
 442                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 0);
 443                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 0);
 444                 break;
 445         case ANTENNA_SW_DIVERSITY:
 446                 /*
 447                  * NOTE: We should never come here because rt2x00lib is
 448                  * supposed to catch this and send us the correct antenna
 449                  * explicitely. However we are nog going to bug about this.
 450                  * Instead, just default to antenna B.
 451                  */
 452         case ANTENNA_B:
 453                 rt2x00_set_field8(&r2, BBP_R2_TX_ANTENNA, 2);
 454                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK, 2);
 455                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM, 2);
 456                 break;
 457         }
 458
 459         /*
 460          * Configure the RX antenna.
 461          */
 462         switch (ant->rx) {
 463         case ANTENNA_HW_DIVERSITY:
 464                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 1);
 465                 break;
 466         case ANTENNA_A:
 467                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 0);
 468                 break;
 469         case ANTENNA_SW_DIVERSITY:
 470                 /*
 471                  * NOTE: We should never come here because rt2x00lib is
 472                  * supposed to catch this and send us the correct antenna
 473                  * explicitely. However we are nog going to bug about this.
 474                  * Instead, just default to antenna B.
 475                  */
 476         case ANTENNA_B:
 477                 rt2x00_set_field8(&r14, BBP_R14_RX_ANTENNA, 2);
 478                 break;
 479         }
 480
 481         /*
 482          * RT2525E and RT5222 need to flip TX I/Q
 483          */
 484         if (rt2x00_rf(&rt2x00dev->chip, RF2525E) ||
 485             rt2x00_rf(&rt2x00dev->chip, RF5222)) {
 486                 rt2x00_set_field8(&r2, BBP_R2_TX_IQ_FLIP, 1);
 487                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 1);
 488                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 1);
 489
 490                 /*
 491                  * RT2525E does not need RX I/Q Flip.
 492                  */
 493                 if (rt2x00_rf(&rt2x00dev->chip, RF2525E))
 494                         rt2x00_set_field8(&r14, BBP_R14_RX_IQ_FLIP, 0);
 495         } else {
 496                 rt2x00_set_field16(&csr5, PHY_CSR5_CCK_FLIP, 0);
 497                 rt2x00_set_field16(&csr6, PHY_CSR6_OFDM_FLIP, 0);
 498         }
 499
 500         rt2500usb_bbp_write(rt2x00dev, 2, r2);
 501         rt2500usb_bbp_write(rt2x00dev, 14, r14);
 502         rt2500usb_register_write(rt2x00dev, PHY_CSR5, csr5);
 503         rt2500usb_register_write(rt2x00dev, PHY_CSR6, csr6);
 504 }
 505
 506 static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev,
 507                                       struct rt2x00lib_conf *libconf)
 508 {
 509         u16 reg;
 510
 511         rt2500usb_register_write(rt2x00dev, MAC_CSR10, libconf->slot_time);
 512
 513         rt2500usb_register_read(rt2x00dev, TXRX_CSR18, &reg);
 514         rt2x00_set_field16(&reg, TXRX_CSR18_INTERVAL,
 515                            libconf->conf->beacon_int * 4);
 516         rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg);
 517 }
 518
 519 static void rt2500usb_config(struct rt2x00_dev *rt2x00dev,
 520                              const unsigned int flags,
 521                              struct rt2x00lib_conf *libconf)
 522 {
 523         if (flags & CONFIG_UPDATE_PHYMODE)
 524                 rt2500usb_config_phymode(rt2x00dev, libconf->phymode,
 525                                          libconf->basic_rates);
 526         if (flags & CONFIG_UPDATE_CHANNEL)
 527                 rt2500usb_config_channel(rt2x00dev, &libconf->rf,
 528                                          libconf->conf->power_level);
 529         if ((flags & CONFIG_UPDATE_TXPOWER) && !(flags & CONFIG_UPDATE_CHANNEL))
 530                 rt2500usb_config_txpower(rt2x00dev,
 531                                          libconf->conf->power_level);
 532         if (flags & CONFIG_UPDATE_ANTENNA)
 533                 rt2500usb_config_antenna(rt2x00dev, &libconf->ant);
 534         if (flags & (CONFIG_UPDATE_SLOT_TIME | CONFIG_UPDATE_BEACON_INT))
 535                 rt2500usb_config_duration(rt2x00dev, libconf);
 536 }
 537
 538 /*
 539  * LED functions.
 540  */
 541 static void rt2500usb_enable_led(struct rt2x00_dev *rt2x00dev)
 542 {
 543         u16 reg;
 544
 545         rt2500usb_register_read(rt2x00dev, MAC_CSR21, &reg);
 546         rt2x00_set_field16(&reg, MAC_CSR21_ON_PERIOD, 70);
 547         rt2x00_set_field16(&reg, MAC_CSR21_OFF_PERIOD, 30);
 548         rt2500usb_register_write(rt2x00dev, MAC_CSR21, reg);
 549
 550         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 551         rt2x00_set_field16(&reg, MAC_CSR20_LINK,
 552                            (rt2x00dev->led_mode != LED_MODE_ASUS));
 553         rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY,
 554                            (rt2x00dev->led_mode != LED_MODE_TXRX_ACTIVITY));
 555         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 556 }
 557
 558 static void rt2500usb_disable_led(struct rt2x00_dev *rt2x00dev)
 559 {
 560         u16 reg;
 561
 562         rt2500usb_register_read(rt2x00dev, MAC_CSR20, &reg);
 563         rt2x00_set_field16(&reg, MAC_CSR20_LINK, 0);
 564         rt2x00_set_field16(&reg, MAC_CSR20_ACTIVITY, 0);
 565         rt2500usb_register_write(rt2x00dev, MAC_CSR20, reg);
 566 }
 567
 568 /*
 569  * Link tuning
 570  */
 571 static void rt2500usb_link_stats(struct rt2x00_dev *rt2x00dev,
 572                                  struct link_qual *qual)
 573 {
 574         u16 reg;
 575
 576         /*
 577          * Update FCS error count from register.
 578          */
 579         rt2500usb_register_read(rt2x00dev, STA_CSR0, &reg);
 580         qual->rx_failed = rt2x00_get_field16(reg, STA_CSR0_FCS_ERROR);
 581
 582         /*
 583          * Update False CCA count from register.
 584          */
 585         rt2500usb_register_read(rt2x00dev, STA_CSR3, &reg);
 586         qual->false_cca = rt2x00_get_field16(reg, STA_CSR3_FALSE_CCA_ERROR);
 587 }
 588
 589 static void rt2500usb_reset_tuner(struct rt2x00_dev *rt2x00dev)
 590 {
 591         u16 eeprom;
 592         u16 value;
 593
 594         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &eeprom);
 595         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R24_LOW);
 596         rt2500usb_bbp_write(rt2x00dev, 24, value);
 597
 598         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &eeprom);
 599         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R25_LOW);
 600         rt2500usb_bbp_write(rt2x00dev, 25, value);
 601
 602         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &eeprom);
 603         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_R61_LOW);
 604         rt2500usb_bbp_write(rt2x00dev, 61, value);
 605
 606         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &eeprom);
 607         value = rt2x00_get_field16(eeprom, EEPROM_BBPTUNE_VGCUPPER);
 608         rt2500usb_bbp_write(rt2x00dev, 17, value);
 609
 610         rt2x00dev->link.vgc_level = value;
 611 }
 612
 613 static void rt2500usb_link_tuner(struct rt2x00_dev *rt2x00dev)
 614 {
 615         int rssi = rt2x00_get_link_rssi(&rt2x00dev->link);
 616         u16 bbp_thresh;
 617         u16 vgc_bound;
 618         u16 sens;
 619         u16 r24;
 620         u16 r25;
 621         u16 r61;
 622         u16 r17_sens;
 623         u8 r17;
 624         u8 up_bound;
 625         u8 low_bound;
 626
 627         /*
 628          * Determine the BBP tuning threshold and correctly
 629          * set BBP 24, 25 and 61.
 630          */
 631         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &bbp_thresh);
 632         bbp_thresh = rt2x00_get_field16(bbp_thresh, EEPROM_BBPTUNE_THRESHOLD);
 633
 634         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &r24);
 635         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &r25);
 636         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &r61);
 637
 638         if ((rssi + bbp_thresh) > 0) {
 639                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_HIGH);
 640                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_HIGH);
 641                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_HIGH);
 642         } else {
 643                 r24 = rt2x00_get_field16(r24, EEPROM_BBPTUNE_R24_LOW);
 644                 r25 = rt2x00_get_field16(r25, EEPROM_BBPTUNE_R25_LOW);
 645                 r61 = rt2x00_get_field16(r61, EEPROM_BBPTUNE_R61_LOW);
 646         }
 647
 648         rt2500usb_bbp_write(rt2x00dev, 24, r24);
 649         rt2500usb_bbp_write(rt2x00dev, 25, r25);
 650         rt2500usb_bbp_write(rt2x00dev, 61, r61);
 651
 652         /*
 653          * Read current r17 value, as well as the sensitivity values
 654          * for the r17 register.
 655          */
 656         rt2500usb_bbp_read(rt2x00dev, 17, &r17);
 657         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &r17_sens);
 658
 659         /*
 660          * A too low RSSI will cause too much false CCA which will
 661          * then corrupt the R17 tuning. To remidy this the tuning should
 662          * be stopped (While making sure the R17 value will not exceed limits)
 663          */
 664         if (rssi >= -40) {
 665                 if (r17 != 0x60)
 666                         rt2500usb_bbp_write(rt2x00dev, 17, 0x60);
 667                 return;
 668         }
 669
 670         /*
 671          * Special big-R17 for short distance
 672          */
 673         if (rssi >= -58) {
 674                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_LOW);
 675                 if (r17 != sens)
 676                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 677                 return;
 678         }
 679
 680         /*
 681          * Special mid-R17 for middle distance
 682          */
 683         if (rssi >= -74) {
 684                 sens = rt2x00_get_field16(r17_sens, EEPROM_BBPTUNE_R17_HIGH);
 685                 if (r17 != sens)
 686                         rt2500usb_bbp_write(rt2x00dev, 17, sens);
 687                 return;
 688         }
 689
 690         /*
 691          * Leave short or middle distance condition, restore r17
 692          * to the dynamic tuning range.
 693          */
 694         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &vgc_bound);
 695         vgc_bound = rt2x00_get_field16(vgc_bound, EEPROM_BBPTUNE_VGCUPPER);
 696
 697         low_bound = 0x32;
 698         if (rssi >= -77)
 699                 up_bound = vgc_bound;
 700         else
 701                 up_bound = vgc_bound - (-77 - rssi);
 702
 703         if (up_bound < low_bound)
 704                 up_bound = low_bound;
 705
 706         if (r17 > up_bound) {
 707                 rt2500usb_bbp_write(rt2x00dev, 17, up_bound);
 708                 rt2x00dev->link.vgc_level = up_bound;
 709         } else if (rt2x00dev->link.qual.false_cca > 512 && r17 < up_bound) {
 710                 rt2500usb_bbp_write(rt2x00dev, 17, ++r17);
 711                 rt2x00dev->link.vgc_level = r17;
 712         } else if (rt2x00dev->link.qual.false_cca < 100 && r17 > low_bound) {
 713                 rt2500usb_bbp_write(rt2x00dev, 17, --r17);
 714                 rt2x00dev->link.vgc_level = r17;
 715         }
 716 }
 717
 718 /*
 719  * Initialization functions.
 720  */
 721 static int rt2500usb_init_registers(struct rt2x00_dev *rt2x00dev)
 722 {
 723         u16 reg;
 724
 725         rt2x00usb_vendor_request_sw(rt2x00dev, USB_DEVICE_MODE, 0x0001,
 726                                     USB_MODE_TEST, REGISTER_TIMEOUT);
 727         rt2x00usb_vendor_request_sw(rt2x00dev, USB_SINGLE_WRITE, 0x0308,
 728                                     0x00f0, REGISTER_TIMEOUT);
 729
 730         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 731         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX, 1);
 732         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 733
 734         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x1111);
 735         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x1e11);
 736
 737         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 738         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 1);
 739         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 1);
 740         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 741         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 742
 743         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 744         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 745         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 746         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 0);
 747         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 748
 749         rt2500usb_register_read(rt2x00dev, TXRX_CSR5, &reg);
 750         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0, 13);
 751         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID0_VALID, 1);
 752         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1, 12);
 753         rt2x00_set_field16(&reg, TXRX_CSR5_BBP_ID1_VALID, 1);
 754         rt2500usb_register_write(rt2x00dev, TXRX_CSR5, reg);
 755
 756         rt2500usb_register_read(rt2x00dev, TXRX_CSR6, &reg);
 757         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0, 10);
 758         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID0_VALID, 1);
 759         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1, 11);
 760         rt2x00_set_field16(&reg, TXRX_CSR6_BBP_ID1_VALID, 1);
 761         rt2500usb_register_write(rt2x00dev, TXRX_CSR6, reg);
 762
 763         rt2500usb_register_read(rt2x00dev, TXRX_CSR7, &reg);
 764         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0, 7);
 765         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID0_VALID, 1);
 766         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1, 6);
 767         rt2x00_set_field16(&reg, TXRX_CSR7_BBP_ID1_VALID, 1);
 768         rt2500usb_register_write(rt2x00dev, TXRX_CSR7, reg);
 769
 770         rt2500usb_register_read(rt2x00dev, TXRX_CSR8, &reg);
 771         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0, 5);
 772         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID0_VALID, 1);
 773         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1, 0);
 774         rt2x00_set_field16(&reg, TXRX_CSR8_BBP_ID1_VALID, 0);
 775         rt2500usb_register_write(rt2x00dev, TXRX_CSR8, reg);
 776
 777         rt2500usb_register_write(rt2x00dev, TXRX_CSR21, 0xe78f);
 778         rt2500usb_register_write(rt2x00dev, MAC_CSR9, 0xff1d);
 779
 780         if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_AWAKE))
 781                 return -EBUSY;
 782
 783         rt2500usb_register_read(rt2x00dev, MAC_CSR1, &reg);
 784         rt2x00_set_field16(&reg, MAC_CSR1_SOFT_RESET, 0);
 785         rt2x00_set_field16(&reg, MAC_CSR1_BBP_RESET, 0);
 786         rt2x00_set_field16(&reg, MAC_CSR1_HOST_READY, 1);
 787         rt2500usb_register_write(rt2x00dev, MAC_CSR1, reg);
 788
 789         if (rt2x00_rev(&rt2x00dev->chip) >= RT2570_VERSION_C) {
 790                 rt2500usb_register_read(rt2x00dev, PHY_CSR2, &reg);
 791                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 0);
 792         } else {
 793                 reg = 0;
 794                 rt2x00_set_field16(&reg, PHY_CSR2_LNA, 1);
 795                 rt2x00_set_field16(&reg, PHY_CSR2_LNA_MODE, 3);
 796         }
 797         rt2500usb_register_write(rt2x00dev, PHY_CSR2, reg);
 798
 799         rt2500usb_register_write(rt2x00dev, MAC_CSR11, 0x0002);
 800         rt2500usb_register_write(rt2x00dev, MAC_CSR22, 0x0053);
 801         rt2500usb_register_write(rt2x00dev, MAC_CSR15, 0x01ee);
 802         rt2500usb_register_write(rt2x00dev, MAC_CSR16, 0x0000);
 803
 804         rt2500usb_register_read(rt2x00dev, MAC_CSR8, &reg);
 805         rt2x00_set_field16(&reg, MAC_CSR8_MAX_FRAME_UNIT,
 806                            rt2x00dev->rx->data_size);
 807         rt2500usb_register_write(rt2x00dev, MAC_CSR8, reg);
 808
 809         rt2500usb_register_read(rt2x00dev, TXRX_CSR0, &reg);
 810         rt2x00_set_field16(&reg, TXRX_CSR0_IV_OFFSET, IEEE80211_HEADER);
 811         rt2x00_set_field16(&reg, TXRX_CSR0_KEY_ID, 0xff);
 812         rt2500usb_register_write(rt2x00dev, TXRX_CSR0, reg);
 813
 814         rt2500usb_register_read(rt2x00dev, MAC_CSR18, &reg);
 815         rt2x00_set_field16(&reg, MAC_CSR18_DELAY_AFTER_BEACON, 90);
 816         rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg);
 817
 818         rt2500usb_register_read(rt2x00dev, PHY_CSR4, &reg);
 819         rt2x00_set_field16(&reg, PHY_CSR4_LOW_RF_LE, 1);
 820         rt2500usb_register_write(rt2x00dev, PHY_CSR4, reg);
 821
 822         rt2500usb_register_read(rt2x00dev, TXRX_CSR1, &reg);
 823         rt2x00_set_field16(&reg, TXRX_CSR1_AUTO_SEQUENCE, 1);
 824         rt2500usb_register_write(rt2x00dev, TXRX_CSR1, reg);
 825
 826         return 0;
 827 }
 828
 829 static int rt2500usb_init_bbp(struct rt2x00_dev *rt2x00dev)
 830 {
 831         unsigned int i;
 832         u16 eeprom;
 833         u8 value;
 834         u8 reg_id;
 835
 836         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 837                 rt2500usb_bbp_read(rt2x00dev, 0, &value);
 838                 if ((value != 0xff) && (value != 0x00))
 839                         goto continue_csr_init;
 840                 NOTICE(rt2x00dev, "Waiting for BBP register.\n");
 841                 udelay(REGISTER_BUSY_DELAY);
 842         }
 843
 844         ERROR(rt2x00dev, "BBP register access failed, aborting.\n");
 845         return -EACCES;
 846
 847 continue_csr_init:
 848         rt2500usb_bbp_write(rt2x00dev, 3, 0x02);
 849         rt2500usb_bbp_write(rt2x00dev, 4, 0x19);
 850         rt2500usb_bbp_write(rt2x00dev, 14, 0x1c);
 851         rt2500usb_bbp_write(rt2x00dev, 15, 0x30);
 852         rt2500usb_bbp_write(rt2x00dev, 16, 0xac);
 853         rt2500usb_bbp_write(rt2x00dev, 18, 0x18);
 854         rt2500usb_bbp_write(rt2x00dev, 19, 0xff);
 855         rt2500usb_bbp_write(rt2x00dev, 20, 0x1e);
 856         rt2500usb_bbp_write(rt2x00dev, 21, 0x08);
 857         rt2500usb_bbp_write(rt2x00dev, 22, 0x08);
 858         rt2500usb_bbp_write(rt2x00dev, 23, 0x08);
 859         rt2500usb_bbp_write(rt2x00dev, 24, 0x80);
 860         rt2500usb_bbp_write(rt2x00dev, 25, 0x50);
 861         rt2500usb_bbp_write(rt2x00dev, 26, 0x08);
 862         rt2500usb_bbp_write(rt2x00dev, 27, 0x23);
 863         rt2500usb_bbp_write(rt2x00dev, 30, 0x10);
 864         rt2500usb_bbp_write(rt2x00dev, 31, 0x2b);
 865         rt2500usb_bbp_write(rt2x00dev, 32, 0xb9);
 866         rt2500usb_bbp_write(rt2x00dev, 34, 0x12);
 867         rt2500usb_bbp_write(rt2x00dev, 35, 0x50);
 868         rt2500usb_bbp_write(rt2x00dev, 39, 0xc4);
 869         rt2500usb_bbp_write(rt2x00dev, 40, 0x02);
 870         rt2500usb_bbp_write(rt2x00dev, 41, 0x60);
 871         rt2500usb_bbp_write(rt2x00dev, 53, 0x10);
 872         rt2500usb_bbp_write(rt2x00dev, 54, 0x18);
 873         rt2500usb_bbp_write(rt2x00dev, 56, 0x08);
 874         rt2500usb_bbp_write(rt2x00dev, 57, 0x10);
 875         rt2500usb_bbp_write(rt2x00dev, 58, 0x08);
 876         rt2500usb_bbp_write(rt2x00dev, 61, 0x60);
 877         rt2500usb_bbp_write(rt2x00dev, 62, 0x10);
 878         rt2500usb_bbp_write(rt2x00dev, 75, 0xff);
 879
 880         DEBUG(rt2x00dev, "Start initialization from EEPROM...\n");
 881         for (i = 0; i < EEPROM_BBP_SIZE; i++) {
 882                 rt2x00_eeprom_read(rt2x00dev, EEPROM_BBP_START + i, &eeprom);
 883
 884                 if (eeprom != 0xffff && eeprom != 0x0000) {
 885                         reg_id = rt2x00_get_field16(eeprom, EEPROM_BBP_REG_ID);
 886                         value = rt2x00_get_field16(eeprom, EEPROM_BBP_VALUE);
 887                         DEBUG(rt2x00dev, "BBP: 0x%02x, value: 0x%02x.\n",
 888                               reg_id, value);
 889                         rt2500usb_bbp_write(rt2x00dev, reg_id, value);
 890                 }
 891         }
 892         DEBUG(rt2x00dev, "...End initialization from EEPROM.\n");
 893
 894         return 0;
 895 }
 896
 897 /*
 898  * Device state switch handlers.
 899  */
 900 static void rt2500usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
 901                                 enum dev_state state)
 902 {
 903         u16 reg;
 904
 905         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
 906         rt2x00_set_field16(&reg, TXRX_CSR2_DISABLE_RX,
 907                            state == STATE_RADIO_RX_OFF);
 908         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
 909 }
 910
 911 static int rt2500usb_enable_radio(struct rt2x00_dev *rt2x00dev)
 912 {
 913         /*
 914          * Initialize all registers.
 915          */
 916         if (rt2500usb_init_registers(rt2x00dev) ||
 917             rt2500usb_init_bbp(rt2x00dev)) {
 918                 ERROR(rt2x00dev, "Register initialization failed.\n");
 919                 return -EIO;
 920         }
 921
 922         rt2x00usb_enable_radio(rt2x00dev);
 923
 924         /*
 925          * Enable LED
 926          */
 927         rt2500usb_enable_led(rt2x00dev);
 928
 929         return 0;
 930 }
 931
 932 static void rt2500usb_disable_radio(struct rt2x00_dev *rt2x00dev)
 933 {
 934         /*
 935          * Disable LED
 936          */
 937         rt2500usb_disable_led(rt2x00dev);
 938
 939         rt2500usb_register_write(rt2x00dev, MAC_CSR13, 0x2121);
 940         rt2500usb_register_write(rt2x00dev, MAC_CSR14, 0x2121);
 941
 942         /*
 943          * Disable synchronisation.
 944          */
 945         rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
 946
 947         rt2x00usb_disable_radio(rt2x00dev);
 948 }
 949
 950 static int rt2500usb_set_state(struct rt2x00_dev *rt2x00dev,
 951                                enum dev_state state)
 952 {
 953         u16 reg;
 954         u16 reg2;
 955         unsigned int i;
 956         char put_to_sleep;
 957         char bbp_state;
 958         char rf_state;
 959
 960         put_to_sleep = (state != STATE_AWAKE);
 961
 962         reg = 0;
 963         rt2x00_set_field16(&reg, MAC_CSR17_BBP_DESIRE_STATE, state);
 964         rt2x00_set_field16(&reg, MAC_CSR17_RF_DESIRE_STATE, state);
 965         rt2x00_set_field16(&reg, MAC_CSR17_PUT_TO_SLEEP, put_to_sleep);
 966         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 967         rt2x00_set_field16(&reg, MAC_CSR17_SET_STATE, 1);
 968         rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 969
 970         /*
 971          * Device is not guaranteed to be in the requested state yet.
 972          * We must wait until the register indicates that the
 973          * device has entered the correct state.
 974          */
 975         for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
 976                 rt2500usb_register_read(rt2x00dev, MAC_CSR17, &reg2);
 977                 bbp_state = rt2x00_get_field16(reg2, MAC_CSR17_BBP_CURR_STATE);
 978                 rf_state = rt2x00_get_field16(reg2, MAC_CSR17_RF_CURR_STATE);
 979                 if (bbp_state == state && rf_state == state)
 980                         return 0;
 981                 rt2500usb_register_write(rt2x00dev, MAC_CSR17, reg);
 982                 msleep(30);
 983         }
 984
 985         NOTICE(rt2x00dev, "Device failed to enter state %d, "
 986                "current device state: bbp %d and rf %d.\n",
 987                state, bbp_state, rf_state);
 988
 989         return -EBUSY;
 990 }
 991
 992 static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
 993                                       enum dev_state state)
 994 {
 995         int retval = 0;
 996
 997         switch (state) {
 998         case STATE_RADIO_ON:
 999                 retval = rt2500usb_enable_radio(rt2x00dev);
1000                 break;
1001         case STATE_RADIO_OFF:
1002                 rt2500usb_disable_radio(rt2x00dev);
1003                 break;
1004         case STATE_RADIO_RX_ON:
1005         case STATE_RADIO_RX_OFF:
1006                 rt2500usb_toggle_rx(rt2x00dev, state);
1007                 break;
1008         case STATE_DEEP_SLEEP:
1009         case STATE_SLEEP:
1010         case STATE_STANDBY:
1011         case STATE_AWAKE:
1012                 retval = rt2500usb_set_state(rt2x00dev, state);
1013                 break;
1014         default:
1015                 retval = -ENOTSUPP;
1016                 break;
1017         }
1018
1019         return retval;
1020 }
1021
1022 /*
1023  * TX descriptor initialization
1024  */
1025 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
1026                                     __le32 *txd,
1027                                     struct txdata_entry_desc *desc,
1028                                     struct ieee80211_hdr *ieee80211hdr,
1029                                     unsigned int length,
1030                                     struct ieee80211_tx_control *control)
1031 {
1032         u32 word;
1033
1034         /*
1035          * Start writing the descriptor words.
1036          */
1037         rt2x00_desc_read(txd, 1, &word);
1038         rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
1039         rt2x00_set_field32(&word, TXD_W1_AIFS, desc->aifs);
1040         rt2x00_set_field32(&word, TXD_W1_CWMIN, desc->cw_min);
1041         rt2x00_set_field32(&word, TXD_W1_CWMAX, desc->cw_max);
1042         rt2x00_desc_write(txd, 1, word);
1043
1044         rt2x00_desc_read(txd, 2, &word);
1045         rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, desc->signal);
1046         rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, desc->service);
1047         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, desc->length_low);
1048         rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, desc->length_high);
1049         rt2x00_desc_write(txd, 2, word);
1050
1051         rt2x00_desc_read(txd, 0, &word);
1052         rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, control->retry_limit);
1053         rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
1054                            test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
1055         rt2x00_set_field32(&word, TXD_W0_ACK,
1056                            test_bit(ENTRY_TXD_ACK, &desc->flags));
1057         rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
1058                            test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
1059         rt2x00_set_field32(&word, TXD_W0_OFDM,
1060                            test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
1061         rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
1062                            !!(control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT));
1063         rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
1064         rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, length);
1065         rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
1066         rt2x00_desc_write(txd, 0, word);
1067 }
1068
1069 static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
1070                                      struct sk_buff *skb)
1071 {
1072         int length;
1073
1074         /*
1075          * The length _must_ be a multiple of 2,
1076          * but it must _not_ be a multiple of the USB packet size.
1077          */
1078         length = roundup(skb->len, 2);
1079         length += (2 * !(length % rt2x00dev->usb_maxpacket));
1080
1081         return length;
1082 }
1083
1084 /*
1085  * TX data initialization
1086  */
1087 static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
1088                                     unsigned int queue)
1089 {
1090         u16 reg;
1091
1092         if (queue != IEEE80211_TX_QUEUE_BEACON)
1093                 return;
1094
1095         rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
1096         if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
1097                 rt2x00_set_field16(&reg, TXRX_CSR19_BEACON_GEN, 1);
1098                 /*
1099                  * Beacon generation will fail initially.
1100                  * To prevent this we need to register the TXRX_CSR19
1101                  * register several times.
1102                  */
1103                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1104                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1105                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1106                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, 0);
1107                 rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
1108         }
1109 }
1110
1111 /*
1112  * RX control handlers
1113  */
1114 static void rt2500usb_fill_rxdone(struct data_entry *entry,
1115                                   struct rxdata_entry_desc *desc)
1116 {
1117         struct urb *urb = entry->priv;
1118         __le32 *rxd = (__le32 *)(entry->skb->data +
1119                                  (urb->actual_length - entry->ring->desc_size));
1120         u32 word0;
1121         u32 word1;
1122
1123         rt2x00_desc_read(rxd, 0, &word0);
1124         rt2x00_desc_read(rxd, 1, &word1);
1125
1126         desc->flags = 0;
1127         if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
1128                 desc->flags |= RX_FLAG_FAILED_FCS_CRC;
1129         if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
1130                 desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
1131
1132         /*
1133          * Obtain the status about this packet.
1134          */
1135         desc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
1136         desc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
1137             entry->ring->rt2x00dev->rssi_offset;
1138         desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
1139         desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
1140
1141         return;
1142 }
1143
1144 /*
1145  * Interrupt functions.
1146  */
1147 static void rt2500usb_beacondone(struct urb *urb)
1148 {
1149         struct data_entry *entry = (struct data_entry *)urb->context;
1150         struct data_ring *ring = entry->ring;
1151
1152         if (!test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags))
1153                 return;
1154
1155         /*
1156          * Check if this was the guardian beacon,
1157          * if that was the case we need to send the real beacon now.
1158          * Otherwise we should free the sk_buffer, the device
1159          * should be doing the rest of the work now.
1160          */
1161         if (ring->index == 1) {
1162                 rt2x00_ring_index_done_inc(ring);
1163                 entry = rt2x00_get_data_entry(ring);
1164                 usb_submit_urb(entry->priv, GFP_ATOMIC);
1165                 rt2x00_ring_index_inc(ring);
1166         } else if (ring->index_done == 1) {
1167                 entry = rt2x00_get_data_entry_done(ring);
1168                 if (entry->skb) {
1169                         dev_kfree_skb(entry->skb);
1170                         entry->skb = NULL;
1171                 }
1172                 rt2x00_ring_index_done_inc(ring);
1173         }
1174 }
1175
1176 /*
1177  * Device probe functions.
1178  */
1179 static int rt2500usb_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1180 {
1181         u16 word;
1182         u8 *mac;
1183
1184         rt2x00usb_eeprom_read(rt2x00dev, rt2x00dev->eeprom, EEPROM_SIZE);
1185
1186         /*
1187          * Start validation of the data that has been read.
1188          */
1189         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
1190         if (!is_valid_ether_addr(mac)) {
1191                 DECLARE_MAC_BUF(macbuf);
1192
1193                 random_ether_addr(mac);
1194                 EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
1195         }
1196
1197         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
1198         if (word == 0xffff) {
1199                 rt2x00_set_field16(&word, EEPROM_ANTENNA_NUM, 2);
1200                 rt2x00_set_field16(&word, EEPROM_ANTENNA_TX_DEFAULT,
1201                                    ANTENNA_SW_DIVERSITY);
1202                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RX_DEFAULT,
1203                                    ANTENNA_SW_DIVERSITY);
1204                 rt2x00_set_field16(&word, EEPROM_ANTENNA_LED_MODE,
1205                                    LED_MODE_DEFAULT);
1206                 rt2x00_set_field16(&word, EEPROM_ANTENNA_DYN_TXAGC, 0);
1207                 rt2x00_set_field16(&word, EEPROM_ANTENNA_HARDWARE_RADIO, 0);
1208                 rt2x00_set_field16(&word, EEPROM_ANTENNA_RF_TYPE, RF2522);
1209                 rt2x00_eeprom_write(rt2x00dev, EEPROM_ANTENNA, word);
1210                 EEPROM(rt2x00dev, "Antenna: 0x%04x\n", word);
1211         }
1212
1213         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &word);
1214         if (word == 0xffff) {
1215                 rt2x00_set_field16(&word, EEPROM_NIC_CARDBUS_ACCEL, 0);
1216                 rt2x00_set_field16(&word, EEPROM_NIC_DYN_BBP_TUNE, 0);
1217                 rt2x00_set_field16(&word, EEPROM_NIC_CCK_TX_POWER, 0);
1218                 rt2x00_eeprom_write(rt2x00dev, EEPROM_NIC, word);
1219                 EEPROM(rt2x00dev, "NIC: 0x%04x\n", word);
1220         }
1221
1222         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &word);
1223         if (word == 0xffff) {
1224                 rt2x00_set_field16(&word, EEPROM_CALIBRATE_OFFSET_RSSI,
1225                                    DEFAULT_RSSI_OFFSET);
1226                 rt2x00_eeprom_write(rt2x00dev, EEPROM_CALIBRATE_OFFSET, word);
1227                 EEPROM(rt2x00dev, "Calibrate offset: 0x%04x\n", word);
1228         }
1229
1230         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE, &word);
1231         if (word == 0xffff) {
1232                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_THRESHOLD, 45);
1233                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE, word);
1234                 EEPROM(rt2x00dev, "BBPtune: 0x%04x\n", word);
1235         }
1236
1237         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_VGC, &word);
1238         if (word == 0xffff) {
1239                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_VGCUPPER, 0x40);
1240                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_VGC, word);
1241                 EEPROM(rt2x00dev, "BBPtune vgc: 0x%04x\n", word);
1242         }
1243
1244         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R17, &word);
1245         if (word == 0xffff) {
1246                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_LOW, 0x48);
1247                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R17_HIGH, 0x41);
1248                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R17, word);
1249                 EEPROM(rt2x00dev, "BBPtune r17: 0x%04x\n", word);
1250         }
1251
1252         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R24, &word);
1253         if (word == 0xffff) {
1254                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_LOW, 0x40);
1255                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R24_HIGH, 0x80);
1256                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R24, word);
1257                 EEPROM(rt2x00dev, "BBPtune r24: 0x%04x\n", word);
1258         }
1259
1260         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R25, &word);
1261         if (word == 0xffff) {
1262                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_LOW, 0x40);
1263                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R25_HIGH, 0x50);
1264                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R25, word);
1265                 EEPROM(rt2x00dev, "BBPtune r25: 0x%04x\n", word);
1266         }
1267
1268         rt2x00_eeprom_read(rt2x00dev, EEPROM_BBPTUNE_R61, &word);
1269         if (word == 0xffff) {
1270                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_LOW, 0x60);
1271                 rt2x00_set_field16(&word, EEPROM_BBPTUNE_R61_HIGH, 0x6d);
1272                 rt2x00_eeprom_write(rt2x00dev, EEPROM_BBPTUNE_R61, word);
1273                 EEPROM(rt2x00dev, "BBPtune r61: 0x%04x\n", word);
1274         }
1275
1276         return 0;
1277 }
1278
1279 static int rt2500usb_init_eeprom(struct rt2x00_dev *rt2x00dev)
1280 {
1281         u16 reg;
1282         u16 value;
1283         u16 eeprom;
1284
1285         /*
1286          * Read EEPROM word for configuration.
1287          */
1288         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
1289
1290         /*
1291          * Identify RF chipset.
1292          */
1293         value = rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RF_TYPE);
1294         rt2500usb_register_read(rt2x00dev, MAC_CSR0, &reg);
1295         rt2x00_set_chip(rt2x00dev, RT2570, value, reg);
1296
1297         if (!rt2x00_check_rev(&rt2x00dev->chip, 0)) {
1298                 ERROR(rt2x00dev, "Invalid RT chipset detected.\n");
1299                 return -ENODEV;
1300         }
1301
1302         if (!rt2x00_rf(&rt2x00dev->chip, RF2522) &&
1303             !rt2x00_rf(&rt2x00dev->chip, RF2523) &&
1304             !rt2x00_rf(&rt2x00dev->chip, RF2524) &&
1305             !rt2x00_rf(&rt2x00dev->chip, RF2525) &&
1306             !rt2x00_rf(&rt2x00dev->chip, RF2525E) &&
1307             !rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1308                 ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
1309                 return -ENODEV;
1310         }
1311
1312         /*
1313          * Identify default antenna configuration.
1314          */
1315         rt2x00dev->default_ant.tx =
1316             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TX_DEFAULT);
1317         rt2x00dev->default_ant.rx =
1318             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RX_DEFAULT);
1319
1320         /*
1321          * When the eeprom indicates SW_DIVERSITY use HW_DIVERSITY instead.
1322          * I am not 100% sure about this, but the legacy drivers do not
1323          * indicate antenna swapping in software is required when
1324          * diversity is enabled.
1325          */
1326         if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
1327                 rt2x00dev->default_ant.tx = ANTENNA_HW_DIVERSITY;
1328         if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
1329                 rt2x00dev->default_ant.rx = ANTENNA_HW_DIVERSITY;
1330
1331         /*
1332          * Store led mode, for correct led behaviour.
1333          */
1334         rt2x00dev->led_mode =
1335             rt2x00_get_field16(eeprom, EEPROM_ANTENNA_LED_MODE);
1336
1337         /*
1338          * Check if the BBP tuning should be disabled.
1339          */
1340         rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
1341         if (rt2x00_get_field16(eeprom, EEPROM_NIC_DYN_BBP_TUNE))
1342                 __set_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags);
1343
1344         /*
1345          * Read the RSSI <-> dBm offset information.
1346          */
1347         rt2x00_eeprom_read(rt2x00dev, EEPROM_CALIBRATE_OFFSET, &eeprom);
1348         rt2x00dev->rssi_offset =
1349             rt2x00_get_field16(eeprom, EEPROM_CALIBRATE_OFFSET_RSSI);
1350
1351         return 0;
1352 }
1353
1354 /*
1355  * RF value list for RF2522
1356  * Supports: 2.4 GHz
1357  */
1358 static const struct rf_channel rf_vals_bg_2522[] = {
1359         { 1,  0x00002050, 0x000c1fda, 0x00000101, 0 },
1360         { 2,  0x00002050, 0x000c1fee, 0x00000101, 0 },
1361         { 3,  0x00002050, 0x000c2002, 0x00000101, 0 },
1362         { 4,  0x00002050, 0x000c2016, 0x00000101, 0 },
1363         { 5,  0x00002050, 0x000c202a, 0x00000101, 0 },
1364         { 6,  0x00002050, 0x000c203e, 0x00000101, 0 },
1365         { 7,  0x00002050, 0x000c2052, 0x00000101, 0 },
1366         { 8,  0x00002050, 0x000c2066, 0x00000101, 0 },
1367         { 9,  0x00002050, 0x000c207a, 0x00000101, 0 },
1368         { 10, 0x00002050, 0x000c208e, 0x00000101, 0 },
1369         { 11, 0x00002050, 0x000c20a2, 0x00000101, 0 },
1370         { 12, 0x00002050, 0x000c20b6, 0x00000101, 0 },
1371         { 13, 0x00002050, 0x000c20ca, 0x00000101, 0 },
1372         { 14, 0x00002050, 0x000c20fa, 0x00000101, 0 },
1373 };
1374
1375 /*
1376  * RF value list for RF2523
1377  * Supports: 2.4 GHz
1378  */
1379 static const struct rf_channel rf_vals_bg_2523[] = {
1380         { 1,  0x00022010, 0x00000c9e, 0x000e0111, 0x00000a1b },
1381         { 2,  0x00022010, 0x00000ca2, 0x000e0111, 0x00000a1b },
1382         { 3,  0x00022010, 0x00000ca6, 0x000e0111, 0x00000a1b },
1383         { 4,  0x00022010, 0x00000caa, 0x000e0111, 0x00000a1b },
1384         { 5,  0x00022010, 0x00000cae, 0x000e0111, 0x00000a1b },
1385         { 6,  0x00022010, 0x00000cb2, 0x000e0111, 0x00000a1b },
1386         { 7,  0x00022010, 0x00000cb6, 0x000e0111, 0x00000a1b },
1387         { 8,  0x00022010, 0x00000cba, 0x000e0111, 0x00000a1b },
1388         { 9,  0x00022010, 0x00000cbe, 0x000e0111, 0x00000a1b },
1389         { 10, 0x00022010, 0x00000d02, 0x000e0111, 0x00000a1b },
1390         { 11, 0x00022010, 0x00000d06, 0x000e0111, 0x00000a1b },
1391         { 12, 0x00022010, 0x00000d0a, 0x000e0111, 0x00000a1b },
1392         { 13, 0x00022010, 0x00000d0e, 0x000e0111, 0x00000a1b },
1393         { 14, 0x00022010, 0x00000d1a, 0x000e0111, 0x00000a03 },
1394 };
1395
1396 /*
1397  * RF value list for RF2524
1398  * Supports: 2.4 GHz
1399  */
1400 static const struct rf_channel rf_vals_bg_2524[] = {
1401         { 1,  0x00032020, 0x00000c9e, 0x00000101, 0x00000a1b },
1402         { 2,  0x00032020, 0x00000ca2, 0x00000101, 0x00000a1b },
1403         { 3,  0x00032020, 0x00000ca6, 0x00000101, 0x00000a1b },
1404         { 4,  0x00032020, 0x00000caa, 0x00000101, 0x00000a1b },
1405         { 5,  0x00032020, 0x00000cae, 0x00000101, 0x00000a1b },
1406         { 6,  0x00032020, 0x00000cb2, 0x00000101, 0x00000a1b },
1407         { 7,  0x00032020, 0x00000cb6, 0x00000101, 0x00000a1b },
1408         { 8,  0x00032020, 0x00000cba, 0x00000101, 0x00000a1b },
1409         { 9,  0x00032020, 0x00000cbe, 0x00000101, 0x00000a1b },
1410         { 10, 0x00032020, 0x00000d02, 0x00000101, 0x00000a1b },
1411         { 11, 0x00032020, 0x00000d06, 0x00000101, 0x00000a1b },
1412         { 12, 0x00032020, 0x00000d0a, 0x00000101, 0x00000a1b },
1413         { 13, 0x00032020, 0x00000d0e, 0x00000101, 0x00000a1b },
1414         { 14, 0x00032020, 0x00000d1a, 0x00000101, 0x00000a03 },
1415 };
1416
1417 /*
1418  * RF value list for RF2525
1419  * Supports: 2.4 GHz
1420  */
1421 static const struct rf_channel rf_vals_bg_2525[] = {
1422         { 1,  0x00022020, 0x00080c9e, 0x00060111, 0x00000a1b },
1423         { 2,  0x00022020, 0x00080ca2, 0x00060111, 0x00000a1b },
1424         { 3,  0x00022020, 0x00080ca6, 0x00060111, 0x00000a1b },
1425         { 4,  0x00022020, 0x00080caa, 0x00060111, 0x00000a1b },
1426         { 5,  0x00022020, 0x00080cae, 0x00060111, 0x00000a1b },
1427         { 6,  0x00022020, 0x00080cb2, 0x00060111, 0x00000a1b },
1428         { 7,  0x00022020, 0x00080cb6, 0x00060111, 0x00000a1b },
1429         { 8,  0x00022020, 0x00080cba, 0x00060111, 0x00000a1b },
1430         { 9,  0x00022020, 0x00080cbe, 0x00060111, 0x00000a1b },
1431         { 10, 0x00022020, 0x00080d02, 0x00060111, 0x00000a1b },
1432         { 11, 0x00022020, 0x00080d06, 0x00060111, 0x00000a1b },
1433         { 12, 0x00022020, 0x00080d0a, 0x00060111, 0x00000a1b },
1434         { 13, 0x00022020, 0x00080d0e, 0x00060111, 0x00000a1b },
1435         { 14, 0x00022020, 0x00080d1a, 0x00060111, 0x00000a03 },
1436 };
1437
1438 /*
1439  * RF value list for RF2525e
1440  * Supports: 2.4 GHz
1441  */
1442 static const struct rf_channel rf_vals_bg_2525e[] = {
1443         { 1,  0x00022010, 0x0000089a, 0x00060111, 0x00000e1b },
1444         { 2,  0x00022010, 0x0000089e, 0x00060111, 0x00000e07 },
1445         { 3,  0x00022010, 0x0000089e, 0x00060111, 0x00000e1b },
1446         { 4,  0x00022010, 0x000008a2, 0x00060111, 0x00000e07 },
1447         { 5,  0x00022010, 0x000008a2, 0x00060111, 0x00000e1b },
1448         { 6,  0x00022010, 0x000008a6, 0x00060111, 0x00000e07 },
1449         { 7,  0x00022010, 0x000008a6, 0x00060111, 0x00000e1b },
1450         { 8,  0x00022010, 0x000008aa, 0x00060111, 0x00000e07 },
1451         { 9,  0x00022010, 0x000008aa, 0x00060111, 0x00000e1b },
1452         { 10, 0x00022010, 0x000008ae, 0x00060111, 0x00000e07 },
1453         { 11, 0x00022010, 0x000008ae, 0x00060111, 0x00000e1b },
1454         { 12, 0x00022010, 0x000008b2, 0x00060111, 0x00000e07 },
1455         { 13, 0x00022010, 0x000008b2, 0x00060111, 0x00000e1b },
1456         { 14, 0x00022010, 0x000008b6, 0x00060111, 0x00000e23 },
1457 };
1458
1459 /*
1460  * RF value list for RF5222
1461  * Supports: 2.4 GHz & 5.2 GHz
1462  */
1463 static const struct rf_channel rf_vals_5222[] = {
1464         { 1,  0x00022020, 0x00001136, 0x00000101, 0x00000a0b },
1465         { 2,  0x00022020, 0x0000113a, 0x00000101, 0x00000a0b },
1466         { 3,  0x00022020, 0x0000113e, 0x00000101, 0x00000a0b },
1467         { 4,  0x00022020, 0x00001182, 0x00000101, 0x00000a0b },
1468         { 5,  0x00022020, 0x00001186, 0x00000101, 0x00000a0b },
1469         { 6,  0x00022020, 0x0000118a, 0x00000101, 0x00000a0b },
1470         { 7,  0x00022020, 0x0000118e, 0x00000101, 0x00000a0b },
1471         { 8,  0x00022020, 0x00001192, 0x00000101, 0x00000a0b },
1472         { 9,  0x00022020, 0x00001196, 0x00000101, 0x00000a0b },
1473         { 10, 0x00022020, 0x0000119a, 0x00000101, 0x00000a0b },
1474         { 11, 0x00022020, 0x0000119e, 0x00000101, 0x00000a0b },
1475         { 12, 0x00022020, 0x000011a2, 0x00000101, 0x00000a0b },
1476         { 13, 0x00022020, 0x000011a6, 0x00000101, 0x00000a0b },
1477         { 14, 0x00022020, 0x000011ae, 0x00000101, 0x00000a1b },
1478
1479         /* 802.11 UNI / HyperLan 2 */
1480         { 36, 0x00022010, 0x00018896, 0x00000101, 0x00000a1f },
1481         { 40, 0x00022010, 0x0001889a, 0x00000101, 0x00000a1f },
1482         { 44, 0x00022010, 0x0001889e, 0x00000101, 0x00000a1f },
1483         { 48, 0x00022010, 0x000188a2, 0x00000101, 0x00000a1f },
1484         { 52, 0x00022010, 0x000188a6, 0x00000101, 0x00000a1f },
1485         { 66, 0x00022010, 0x000188aa, 0x00000101, 0x00000a1f },
1486         { 60, 0x00022010, 0x000188ae, 0x00000101, 0x00000a1f },
1487         { 64, 0x00022010, 0x000188b2, 0x00000101, 0x00000a1f },
1488
1489         /* 802.11 HyperLan 2 */
1490         { 100, 0x00022010, 0x00008802, 0x00000101, 0x00000a0f },
1491         { 104, 0x00022010, 0x00008806, 0x00000101, 0x00000a0f },
1492         { 108, 0x00022010, 0x0000880a, 0x00000101, 0x00000a0f },
1493         { 112, 0x00022010, 0x0000880e, 0x00000101, 0x00000a0f },
1494         { 116, 0x00022010, 0x00008812, 0x00000101, 0x00000a0f },
1495         { 120, 0x00022010, 0x00008816, 0x00000101, 0x00000a0f },
1496         { 124, 0x00022010, 0x0000881a, 0x00000101, 0x00000a0f },
1497         { 128, 0x00022010, 0x0000881e, 0x00000101, 0x00000a0f },
1498         { 132, 0x00022010, 0x00008822, 0x00000101, 0x00000a0f },
1499         { 136, 0x00022010, 0x00008826, 0x00000101, 0x00000a0f },
1500
1501         /* 802.11 UNII */
1502         { 140, 0x00022010, 0x0000882a, 0x00000101, 0x00000a0f },
1503         { 149, 0x00022020, 0x000090a6, 0x00000101, 0x00000a07 },
1504         { 153, 0x00022020, 0x000090ae, 0x00000101, 0x00000a07 },
1505         { 157, 0x00022020, 0x000090b6, 0x00000101, 0x00000a07 },
1506         { 161, 0x00022020, 0x000090be, 0x00000101, 0x00000a07 },
1507 };
1508
1509 static void rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
1510 {
1511         struct hw_mode_spec *spec = &rt2x00dev->spec;
1512         u8 *txpower;
1513         unsigned int i;
1514
1515         /*
1516          * Initialize all hw fields.
1517          */
1518         rt2x00dev->hw->flags =
1519             IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
1520             IEEE80211_HW_RX_INCLUDES_FCS |
1521             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
1522         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE;
1523         rt2x00dev->hw->max_signal = MAX_SIGNAL;
1524         rt2x00dev->hw->max_rssi = MAX_RX_SSI;
1525         rt2x00dev->hw->queues = 2;
1526
1527         SET_IEEE80211_DEV(rt2x00dev->hw, &rt2x00dev_usb(rt2x00dev)->dev);
1528         SET_IEEE80211_PERM_ADDR(rt2x00dev->hw,
1529                                 rt2x00_eeprom_addr(rt2x00dev,
1530                                                    EEPROM_MAC_ADDR_0));
1531
1532         /*
1533          * Convert tx_power array in eeprom.
1534          */
1535         txpower = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
1536         for (i = 0; i < 14; i++)
1537                 txpower[i] = TXPOWER_FROM_DEV(txpower[i]);
1538
1539         /*
1540          * Initialize hw_mode information.
1541          */
1542         spec->num_modes = 2;
1543         spec->num_rates = 12;
1544         spec->tx_power_a = NULL;
1545         spec->tx_power_bg = txpower;
1546         spec->tx_power_default = DEFAULT_TXPOWER;
1547
1548         if (rt2x00_rf(&rt2x00dev->chip, RF2522)) {
1549                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2522);
1550                 spec->channels = rf_vals_bg_2522;
1551         } else if (rt2x00_rf(&rt2x00dev->chip, RF2523)) {
1552                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2523);
1553                 spec->channels = rf_vals_bg_2523;
1554         } else if (rt2x00_rf(&rt2x00dev->chip, RF2524)) {
1555                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2524);
1556                 spec->channels = rf_vals_bg_2524;
1557         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525)) {
1558                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525);
1559                 spec->channels = rf_vals_bg_2525;
1560         } else if (rt2x00_rf(&rt2x00dev->chip, RF2525E)) {
1561                 spec->num_channels = ARRAY_SIZE(rf_vals_bg_2525e);
1562                 spec->channels = rf_vals_bg_2525e;
1563         } else if (rt2x00_rf(&rt2x00dev->chip, RF5222)) {
1564                 spec->num_channels = ARRAY_SIZE(rf_vals_5222);
1565                 spec->channels = rf_vals_5222;
1566                 spec->num_modes = 3;
1567         }
1568 }
1569
1570 static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
1571 {
1572         int retval;
1573
1574         /*
1575          * Allocate eeprom data.
1576          */
1577         retval = rt2500usb_validate_eeprom(rt2x00dev);
1578         if (retval)
1579                 return retval;
1580
1581         retval = rt2500usb_init_eeprom(rt2x00dev);
1582         if (retval)
1583                 return retval;
1584
1585         /*
1586          * Initialize hw specifications.
1587          */
1588         rt2500usb_probe_hw_mode(rt2x00dev);
1589
1590         /*
1591          * This device requires the beacon ring
1592          */
1593         __set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
1594
1595         /*
1596          * Set the rssi offset.
1597          */
1598         rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1599
1600         return 0;
1601 }
1602
1603 /*
1604  * IEEE80211 stack callback functions.
1605  */
1606 static void rt2500usb_configure_filter(struct ieee80211_hw *hw,
1607                                        unsigned int changed_flags,
1608                                        unsigned int *total_flags,
1609                                        int mc_count,
1610                                        struct dev_addr_list *mc_list)
1611 {
1612         struct rt2x00_dev *rt2x00dev = hw->priv;
1613         struct interface *intf = &rt2x00dev->interface;
1614         u16 reg;
1615
1616         /*
1617          * Mask off any flags we are going to ignore from
1618          * the total_flags field.
1619          */
1620         *total_flags &=
1621             FIF_ALLMULTI |
1622             FIF_FCSFAIL |
1623             FIF_PLCPFAIL |
1624             FIF_CONTROL |
1625             FIF_OTHER_BSS |
1626             FIF_PROMISC_IN_BSS;
1627
1628         /*
1629          * Apply some rules to the filters:
1630          * - Some filters imply different filters to be set.
1631          * - Some things we can't filter out at all.
1632          * - Some filters are set based on interface type.
1633          */
1634         if (mc_count)
1635                 *total_flags |= FIF_ALLMULTI;
1636         if (*total_flags & FIF_OTHER_BSS ||
1637             *total_flags & FIF_PROMISC_IN_BSS)
1638                 *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS;
1639         if (is_interface_type(intf, IEEE80211_IF_TYPE_AP))
1640                 *total_flags |= FIF_PROMISC_IN_BSS;
1641
1642         /*
1643          * Check if there is any work left for us.
1644          */
1645         if (intf->filter == *total_flags)
1646                 return;
1647         intf->filter = *total_flags;
1648
1649         /*
1650          * When in atomic context, reschedule and let rt2x00lib
1651          * call this function again.
1652          */
1653         if (in_atomic()) {
1654                 queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work);
1655                 return;
1656         }
1657
1658         /*
1659          * Start configuration steps.
1660          * Note that the version error will always be dropped
1661          * and broadcast frames will always be accepted since
1662          * there is no filter for it at this time.
1663          */
1664         rt2500usb_register_read(rt2x00dev, TXRX_CSR2, &reg);
1665         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CRC,
1666                            !(*total_flags & FIF_FCSFAIL));
1667         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_PHYSICAL,
1668                            !(*total_flags & FIF_PLCPFAIL));
1669         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_CONTROL,
1670                            !(*total_flags & FIF_CONTROL));
1671         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_NOT_TO_ME,
1672                            !(*total_flags & FIF_PROMISC_IN_BSS));
1673         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_TODS,
1674                            !(*total_flags & FIF_PROMISC_IN_BSS));
1675         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_VERSION_ERROR, 1);
1676         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_MULTICAST,
1677                            !(*total_flags & FIF_ALLMULTI));
1678         rt2x00_set_field16(&reg, TXRX_CSR2_DROP_BROADCAST, 0);
1679         rt2500usb_register_write(rt2x00dev, TXRX_CSR2, reg);
1680 }
1681
1682 static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
1683                                    struct sk_buff *skb,
1684                                    struct ieee80211_tx_control *control)
1685 {
1686         struct rt2x00_dev *rt2x00dev = hw->priv;
1687         struct usb_device *usb_dev =
1688             interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
1689         struct skb_desc *desc;
1690         struct data_ring *ring;
1691         struct data_entry *beacon;
1692         struct data_entry *guardian;
1693         int pipe = usb_sndbulkpipe(usb_dev, 1);
1694         int length;
1695
1696         /*
1697          * Just in case the ieee80211 doesn't set this,
1698          * but we need this queue set for the descriptor
1699          * initialization.
1700          */
1701         control->queue = IEEE80211_TX_QUEUE_BEACON;
1702         ring = rt2x00lib_get_ring(rt2x00dev, control->queue);
1703
1704         /*
1705          * Obtain 2 entries, one for the guardian byte,
1706          * the second for the actual beacon.
1707          */
1708         guardian = rt2x00_get_data_entry(ring);
1709         rt2x00_ring_index_inc(ring);
1710         beacon = rt2x00_get_data_entry(ring);
1711
1712         /*
1713          * Add the descriptor in front of the skb.
1714          */
1715         skb_push(skb, ring->desc_size);
1716         memset(skb->data, 0, ring->desc_size);
1717
1718         /*
1719          * Fill in skb descriptor
1720          */
1721         desc = get_skb_desc(skb);
1722         desc->desc_len = ring->desc_size;
1723         desc->data_len = skb->len - ring->desc_size;
1724         desc->desc = skb->data;
1725         desc->data = skb->data + ring->desc_size;
1726         desc->ring = ring;
1727         desc->entry = beacon;
1728
1729         rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
1730
1731         /*
1732          * USB devices cannot blindly pass the skb->len as the
1733          * length of the data to usb_fill_bulk_urb. Pass the skb
1734          * to the driver to determine what the length should be.
1735          */
1736         length = rt2500usb_get_tx_data_len(rt2x00dev, skb);
1737
1738         usb_fill_bulk_urb(beacon->priv, usb_dev, pipe,
1739                           skb->data, length, rt2500usb_beacondone, beacon);
1740
1741         /*
1742          * Second we need to create the guardian byte.
1743          * We only need a single byte, so lets recycle
1744          * the 'flags' field we are not using for beacons.
1745          */
1746         guardian->flags = 0;
1747         usb_fill_bulk_urb(guardian->priv, usb_dev, pipe,
1748                           &guardian->flags, 1, rt2500usb_beacondone, guardian);
1749
1750         /*
1751          * Send out the guardian byte.
1752          */
1753         usb_submit_urb(guardian->priv, GFP_ATOMIC);
1754
1755         /*
1756          * Enable beacon generation.
1757          */
1758         rt2500usb_kick_tx_queue(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
1759
1760         return 0;
1761 }
1762
1763 static const struct ieee80211_ops rt2500usb_mac80211_ops = {
1764         .tx                     = rt2x00mac_tx,
1765         .start                  = rt2x00mac_start,
1766         .stop                   = rt2x00mac_stop,
1767         .add_interface          = rt2x00mac_add_interface,
1768         .remove_interface       = rt2x00mac_remove_interface,
1769         .config                 = rt2x00mac_config,
1770         .config_interface       = rt2x00mac_config_interface,
1771         .configure_filter       = rt2500usb_configure_filter,
1772         .get_stats              = rt2x00mac_get_stats,
1773         .erp_ie_changed         = rt2x00mac_erp_ie_changed,
1774         .conf_tx                = rt2x00mac_conf_tx,
1775         .get_tx_stats           = rt2x00mac_get_tx_stats,
1776         .beacon_update          = rt2500usb_beacon_update,
1777 };
1778
1779 static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
1780         .probe_hw               = rt2500usb_probe_hw,
1781         .initialize             = rt2x00usb_initialize,
1782         .uninitialize           = rt2x00usb_uninitialize,
1783         .set_device_state       = rt2500usb_set_device_state,
1784         .link_stats             = rt2500usb_link_stats,
1785         .reset_tuner            = rt2500usb_reset_tuner,
1786         .link_tuner             = rt2500usb_link_tuner,
1787         .write_tx_desc          = rt2500usb_write_tx_desc,
1788         .write_tx_data          = rt2x00usb_write_tx_data,
1789         .get_tx_data_len        = rt2500usb_get_tx_data_len,
1790         .kick_tx_queue          = rt2500usb_kick_tx_queue,
1791         .fill_rxdone            = rt2500usb_fill_rxdone,
1792         .config_mac_addr        = rt2500usb_config_mac_addr,
1793         .config_bssid           = rt2500usb_config_bssid,
1794         .config_type            = rt2500usb_config_type,
1795         .config_preamble        = rt2500usb_config_preamble,
1796         .config                 = rt2500usb_config,
1797 };
1798
1799 static const struct rt2x00_ops rt2500usb_ops = {
1800         .name           = KBUILD_MODNAME,
1801         .rxd_size       = RXD_DESC_SIZE,
1802         .txd_size       = TXD_DESC_SIZE,
1803         .eeprom_size    = EEPROM_SIZE,
1804         .rf_size        = RF_SIZE,
1805         .lib            = &rt2500usb_rt2x00_ops,
1806         .hw             = &rt2500usb_mac80211_ops,
1807 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
1808         .debugfs        = &rt2500usb_rt2x00debug,
1809 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1810 };
1811
1812 /*
1813  * rt2500usb module information.
1814  */
1815 static struct usb_device_id rt2500usb_device_table[] = {
1816         /* ASUS */
1817         { USB_DEVICE(0x0b05, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1818         { USB_DEVICE(0x0b05, 0x1707), USB_DEVICE_DATA(&rt2500usb_ops) },
1819         /* Belkin */
1820         { USB_DEVICE(0x050d, 0x7050), USB_DEVICE_DATA(&rt2500usb_ops) },
1821         { USB_DEVICE(0x050d, 0x7051), USB_DEVICE_DATA(&rt2500usb_ops) },
1822         { USB_DEVICE(0x050d, 0x705a), USB_DEVICE_DATA(&rt2500usb_ops) },
1823         /* Cisco Systems */
1824         { USB_DEVICE(0x13b1, 0x000d), USB_DEVICE_DATA(&rt2500usb_ops) },
1825         { USB_DEVICE(0x13b1, 0x0011), USB_DEVICE_DATA(&rt2500usb_ops) },
1826         { USB_DEVICE(0x13b1, 0x001a), USB_DEVICE_DATA(&rt2500usb_ops) },
1827         /* Conceptronic */
1828         { USB_DEVICE(0x14b2, 0x3c02), USB_DEVICE_DATA(&rt2500usb_ops) },
1829         /* D-LINK */
1830         { USB_DEVICE(0x2001, 0x3c00), USB_DEVICE_DATA(&rt2500usb_ops) },
1831         /* Gigabyte */
1832         { USB_DEVICE(0x1044, 0x8001), USB_DEVICE_DATA(&rt2500usb_ops) },
1833         { USB_DEVICE(0x1044, 0x8007), USB_DEVICE_DATA(&rt2500usb_ops) },
1834         /* Hercules */
1835         { USB_DEVICE(0x06f8, 0xe000), USB_DEVICE_DATA(&rt2500usb_ops) },
1836         /* Melco */
1837         { USB_DEVICE(0x0411, 0x0066), USB_DEVICE_DATA(&rt2500usb_ops) },
1838         { USB_DEVICE(0x0411, 0x0067), USB_DEVICE_DATA(&rt2500usb_ops) },
1839         { USB_DEVICE(0x0411, 0x008b), USB_DEVICE_DATA(&rt2500usb_ops) },
1840         { USB_DEVICE(0x0411, 0x0097), USB_DEVICE_DATA(&rt2500usb_ops) },
1841
1842         /* MSI */
1843         { USB_DEVICE(0x0db0, 0x6861), USB_DEVICE_DATA(&rt2500usb_ops) },
1844         { USB_DEVICE(0x0db0, 0x6865), USB_DEVICE_DATA(&rt2500usb_ops) },
1845         { USB_DEVICE(0x0db0, 0x6869), USB_DEVICE_DATA(&rt2500usb_ops) },
1846         /* Ralink */
1847         { USB_DEVICE(0x148f, 0x1706), USB_DEVICE_DATA(&rt2500usb_ops) },
1848         { USB_DEVICE(0x148f, 0x2570), USB_DEVICE_DATA(&rt2500usb_ops) },
1849         { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt2500usb_ops) },
1850         { USB_DEVICE(0x148f, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1851         /* Siemens */
1852         { USB_DEVICE(0x0681, 0x3c06), USB_DEVICE_DATA(&rt2500usb_ops) },
1853         /* SMC */
1854         { USB_DEVICE(0x0707, 0xee13), USB_DEVICE_DATA(&rt2500usb_ops) },
1855         /* Spairon */
1856         { USB_DEVICE(0x114b, 0x0110), USB_DEVICE_DATA(&rt2500usb_ops) },
1857         /* Trust */
1858         { USB_DEVICE(0x0eb0, 0x9020), USB_DEVICE_DATA(&rt2500usb_ops) },
1859         /* Zinwell */
1860         { USB_DEVICE(0x5a57, 0x0260), USB_DEVICE_DATA(&rt2500usb_ops) },
1861         { 0, }
1862 };
1863
1864 MODULE_AUTHOR(DRV_PROJECT);
1865 MODULE_VERSION(DRV_VERSION);
1866 MODULE_DESCRIPTION("Ralink RT2500 USB Wireless LAN driver.");
1867 MODULE_SUPPORTED_DEVICE("Ralink RT2570 USB chipset based cards");
1868 MODULE_DEVICE_TABLE(usb, rt2500usb_device_table);
1869 MODULE_LICENSE("GPL");
1870
1871 static struct usb_driver rt2500usb_driver = {
1872         .name           = KBUILD_MODNAME,
1873         .id_table       = rt2500usb_device_table,
1874         .probe          = rt2x00usb_probe,
1875         .disconnect     = rt2x00usb_disconnect,
1876         .suspend        = rt2x00usb_suspend,
1877         .resume         = rt2x00usb_resume,
1878 };
1879
1880 static int __init rt2500usb_init(void)
1881 {
1882         return usb_register(&rt2500usb_driver);
1883 }
1884
1885 static void __exit rt2500usb_exit(void)
1886 {
1887         usb_deregister(&rt2500usb_driver);
1888 }
1889
1890 module_init(rt2500usb_init);
1891 module_exit(rt2500usb_exit);