drivers/net/wireless/ath/ath5k/ath5k.h

   1 /*
   2  * Copyright (c) 2004-2007 Reyk Floeter <reyk@openbsd.org>
   3  * Copyright (c) 2006-2007 Nick Kossifidis <mickflemm@gmail.com>
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #ifndef _ATH5K_H
  19 #define _ATH5K_H
  20
  21 /* TODO: Clean up channel debugging (doesn't work anyway) and start
  22  * working on reg. control code using all available eeprom information
  23  * (rev. engineering needed) */
  24 #define CHAN_DEBUG      0
  25
  26 #include <linux/io.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/types.h>
  29 #include <linux/average.h>
  30 #include <linux/leds.h>
  31 #include <net/mac80211.h>
  32 #include <net/cfg80211.h>
  33
  34 /* RX/TX descriptor hw structs
  35  * TODO: Driver part should only see sw structs */
  36 #include "desc.h"
  37
  38 /* EEPROM structs/offsets
  39  * TODO: Make a more generic struct (eg. add more stuff to ath5k_capabilities)
  40  * and clean up common bits, then introduce set/get functions in eeprom.c */
  41 #include "eeprom.h"
  42 #include "debug.h"
  43 #include "../ath.h"
  44 #include "ani.h"
  45
  46 /* PCI IDs */
  47 #define PCI_DEVICE_ID_ATHEROS_AR5210            0x0007 /* AR5210 */
  48 #define PCI_DEVICE_ID_ATHEROS_AR5311            0x0011 /* AR5311 */
  49 #define PCI_DEVICE_ID_ATHEROS_AR5211            0x0012 /* AR5211 */
  50 #define PCI_DEVICE_ID_ATHEROS_AR5212            0x0013 /* AR5212 */
  51 #define PCI_DEVICE_ID_3COM_3CRDAG675            0x0013 /* 3CRDAG675 (Atheros AR5212) */
  52 #define PCI_DEVICE_ID_3COM_2_3CRPAG175          0x0013 /* 3CRPAG175 (Atheros AR5212) */
  53 #define PCI_DEVICE_ID_ATHEROS_AR5210_AP         0x0207 /* AR5210 (Early) */
  54 #define PCI_DEVICE_ID_ATHEROS_AR5212_IBM        0x1014 /* AR5212 (IBM MiniPCI) */
  55 #define PCI_DEVICE_ID_ATHEROS_AR5210_DEFAULT    0x1107 /* AR5210 (no eeprom) */
  56 #define PCI_DEVICE_ID_ATHEROS_AR5212_DEFAULT    0x1113 /* AR5212 (no eeprom) */
  57 #define PCI_DEVICE_ID_ATHEROS_AR5211_DEFAULT    0x1112 /* AR5211 (no eeprom) */
  58 #define PCI_DEVICE_ID_ATHEROS_AR5212_FPGA       0xf013 /* AR5212 (emulation board) */
  59 #define PCI_DEVICE_ID_ATHEROS_AR5211_LEGACY     0xff12 /* AR5211 (emulation board) */
  60 #define PCI_DEVICE_ID_ATHEROS_AR5211_FPGA11B    0xf11b /* AR5211 (emulation board) */
  61 #define PCI_DEVICE_ID_ATHEROS_AR5312_REV2       0x0052 /* AR5312 WMAC (AP31) */
  62 #define PCI_DEVICE_ID_ATHEROS_AR5312_REV7       0x0057 /* AR5312 WMAC (AP30-040) */
  63 #define PCI_DEVICE_ID_ATHEROS_AR5312_REV8       0x0058 /* AR5312 WMAC (AP43-030) */
  64 #define PCI_DEVICE_ID_ATHEROS_AR5212_0014       0x0014 /* AR5212 compatible */
  65 #define PCI_DEVICE_ID_ATHEROS_AR5212_0015       0x0015 /* AR5212 compatible */
  66 #define PCI_DEVICE_ID_ATHEROS_AR5212_0016       0x0016 /* AR5212 compatible */
  67 #define PCI_DEVICE_ID_ATHEROS_AR5212_0017       0x0017 /* AR5212 compatible */
  68 #define PCI_DEVICE_ID_ATHEROS_AR5212_0018       0x0018 /* AR5212 compatible */
  69 #define PCI_DEVICE_ID_ATHEROS_AR5212_0019       0x0019 /* AR5212 compatible */
  70 #define PCI_DEVICE_ID_ATHEROS_AR2413            0x001a /* AR2413 (Griffin-lite) */
  71 #define PCI_DEVICE_ID_ATHEROS_AR5413            0x001b /* AR5413 (Eagle) */
  72 #define PCI_DEVICE_ID_ATHEROS_AR5424            0x001c /* AR5424 (Condor PCI-E) */
  73 #define PCI_DEVICE_ID_ATHEROS_AR5416            0x0023 /* AR5416 */
  74 #define PCI_DEVICE_ID_ATHEROS_AR5418            0x0024 /* AR5418 */
  75
  76 /****************************\
  77   GENERIC DRIVER DEFINITIONS
  78 \****************************/
  79
  80 #define ATH5K_PRINTF(fmt, ...)                                          \
  81         pr_warn("%s: " fmt, __func__, ##__VA_ARGS__)
  82
  83 void __printf(3, 4)
  84 _ath5k_printk(const struct ath5k_hw *ah, const char *level,
  85               const char *fmt, ...);
  86
  87 #define ATH5K_PRINTK(_sc, _level, _fmt, ...)                            \
  88         _ath5k_printk(_sc, _level, _fmt, ##__VA_ARGS__)
  89
  90 #define ATH5K_PRINTK_LIMIT(_sc, _level, _fmt, ...)                      \
  91 do {                                                                    \
  92         if (net_ratelimit())                                            \
  93                 ATH5K_PRINTK(_sc, _level, _fmt, ##__VA_ARGS__);         \
  94 } while (0)
  95
  96 #define ATH5K_INFO(_sc, _fmt, ...)                                      \
  97         ATH5K_PRINTK(_sc, KERN_INFO, _fmt, ##__VA_ARGS__)
  98
  99 #define ATH5K_WARN(_sc, _fmt, ...)                                      \
 100         ATH5K_PRINTK_LIMIT(_sc, KERN_WARNING, _fmt, ##__VA_ARGS__)
 101
 102 #define ATH5K_ERR(_sc, _fmt, ...)                                       \
 103         ATH5K_PRINTK_LIMIT(_sc, KERN_ERR, _fmt, ##__VA_ARGS__)
 104
 105 /*
 106  * AR5K REGISTER ACCESS
 107  */
 108
 109 /* Some macros to read/write fields */
 110
 111 /* First shift, then mask */
 112 #define AR5K_REG_SM(_val, _flags)                                       \
 113         (((_val) << _flags##_S) & (_flags))
 114
 115 /* First mask, then shift */
 116 #define AR5K_REG_MS(_val, _flags)                                       \
 117         (((_val) & (_flags)) >> _flags##_S)
 118
 119 /* Some registers can hold multiple values of interest. For this
 120  * reason when we want to write to these registers we must first
 121  * retrieve the values which we do not want to clear (lets call this
 122  * old_data) and then set the register with this and our new_value:
 123  * ( old_data | new_value) */
 124 #define AR5K_REG_WRITE_BITS(ah, _reg, _flags, _val)                     \
 125         ath5k_hw_reg_write(ah, (ath5k_hw_reg_read(ah, _reg) & ~(_flags)) | \
 126             (((_val) << _flags##_S) & (_flags)), _reg)
 127
 128 #define AR5K_REG_MASKED_BITS(ah, _reg, _flags, _mask)                   \
 129         ath5k_hw_reg_write(ah, (ath5k_hw_reg_read(ah, _reg) &           \
 130                         (_mask)) | (_flags), _reg)
 131
 132 #define AR5K_REG_ENABLE_BITS(ah, _reg, _flags)                          \
 133         ath5k_hw_reg_write(ah, ath5k_hw_reg_read(ah, _reg) | (_flags), _reg)
 134
 135 #define AR5K_REG_DISABLE_BITS(ah, _reg, _flags)                 \
 136         ath5k_hw_reg_write(ah, ath5k_hw_reg_read(ah, _reg) & ~(_flags), _reg)
 137
 138 /* Access QCU registers per queue */
 139 #define AR5K_REG_READ_Q(ah, _reg, _queue)                               \
 140         (ath5k_hw_reg_read(ah, _reg) & (1 << _queue))                   \
 141
 142 #define AR5K_REG_WRITE_Q(ah, _reg, _queue)                              \
 143         ath5k_hw_reg_write(ah, (1 << _queue), _reg)
 144
 145 #define AR5K_Q_ENABLE_BITS(_reg, _queue) do {                           \
 146         _reg |= 1 << _queue;                                            \
 147 } while (0)
 148
 149 #define AR5K_Q_DISABLE_BITS(_reg, _queue) do {                          \
 150         _reg &= ~(1 << _queue);                                         \
 151 } while (0)
 152
 153 /* Used while writing initvals */
 154 #define AR5K_REG_WAIT(_i) do {                                          \
 155         if (_i % 64)                                                    \
 156                 udelay(1);                                              \
 157 } while (0)
 158
 159 /*
 160  * Some tunable values (these should be changeable by the user)
 161  * TODO: Make use of them and add more options OR use debug/configfs
 162  */
 163 #define AR5K_TUNE_DMA_BEACON_RESP               2
 164 #define AR5K_TUNE_SW_BEACON_RESP                10
 165 #define AR5K_TUNE_ADDITIONAL_SWBA_BACKOFF       0
 166 #define AR5K_TUNE_MIN_TX_FIFO_THRES             1
 167 #define AR5K_TUNE_MAX_TX_FIFO_THRES     ((IEEE80211_MAX_FRAME_LEN / 64) + 1)
 168 #define AR5K_TUNE_REGISTER_TIMEOUT              20000
 169 /* Register for RSSI threshold has a mask of 0xff, so 255 seems to
 170  * be the max value. */
 171 #define AR5K_TUNE_RSSI_THRES                    129
 172 /* This must be set when setting the RSSI threshold otherwise it can
 173  * prevent a reset. If AR5K_RSSI_THR is read after writing to it
 174  * the BMISS_THRES will be seen as 0, seems hardware doesn't keep
 175  * track of it. Max value depends on hardware. For AR5210 this is just 7.
 176  * For AR5211+ this seems to be up to 255. */
 177 #define AR5K_TUNE_BMISS_THRES                   7
 178 #define AR5K_TUNE_REGISTER_DWELL_TIME           20000
 179 #define AR5K_TUNE_BEACON_INTERVAL               100
 180 #define AR5K_TUNE_AIFS                          2
 181 #define AR5K_TUNE_AIFS_11B                      2
 182 #define AR5K_TUNE_AIFS_XR                       0
 183 #define AR5K_TUNE_CWMIN                         15
 184 #define AR5K_TUNE_CWMIN_11B                     31
 185 #define AR5K_TUNE_CWMIN_XR                      3
 186 #define AR5K_TUNE_CWMAX                         1023
 187 #define AR5K_TUNE_CWMAX_11B                     1023
 188 #define AR5K_TUNE_CWMAX_XR                      7
 189 #define AR5K_TUNE_NOISE_FLOOR                   -72
 190 #define AR5K_TUNE_CCA_MAX_GOOD_VALUE            -95
 191 #define AR5K_TUNE_MAX_TXPOWER                   63
 192 #define AR5K_TUNE_DEFAULT_TXPOWER               25
 193 #define AR5K_TUNE_TPC_TXPOWER                   false
 194 #define ATH5K_TUNE_CALIBRATION_INTERVAL_FULL    60000   /* 60 sec */
 195 #define ATH5K_TUNE_CALIBRATION_INTERVAL_SHORT   10000   /* 10 sec */
 196 #define ATH5K_TUNE_CALIBRATION_INTERVAL_ANI     1000    /* 1 sec */
 197 #define ATH5K_TX_COMPLETE_POLL_INT              3000    /* 3 sec */
 198
 199 #define AR5K_INIT_CARR_SENSE_EN                 1
 200
 201 /*Swap RX/TX Descriptor for big endian archs*/
 202 #if defined(__BIG_ENDIAN)
 203 #define AR5K_INIT_CFG   (               \
 204         AR5K_CFG_SWTD | AR5K_CFG_SWRD   \
 205 )
 206 #else
 207 #define AR5K_INIT_CFG   0x00000000
 208 #endif
 209
 210 /* Initial values */
 211 #define AR5K_INIT_CYCRSSI_THR1                  2
 212
 213 /* Tx retry limit defaults from standard */
 214 #define AR5K_INIT_RETRY_SHORT                   7
 215 #define AR5K_INIT_RETRY_LONG                    4
 216
 217 /* Slot time */
 218 #define AR5K_INIT_SLOT_TIME_TURBO               6
 219 #define AR5K_INIT_SLOT_TIME_DEFAULT             9
 220 #define AR5K_INIT_SLOT_TIME_HALF_RATE           13
 221 #define AR5K_INIT_SLOT_TIME_QUARTER_RATE        21
 222 #define AR5K_INIT_SLOT_TIME_B                   20
 223 #define AR5K_SLOT_TIME_MAX                      0xffff
 224
 225 /* SIFS */
 226 #define AR5K_INIT_SIFS_TURBO                    6
 227 #define AR5K_INIT_SIFS_DEFAULT_BG               10
 228 #define AR5K_INIT_SIFS_DEFAULT_A                16
 229 #define AR5K_INIT_SIFS_HALF_RATE                32
 230 #define AR5K_INIT_SIFS_QUARTER_RATE             64
 231
 232 /* Used to calculate tx time for non 5/10/40MHz
 233  * operation */
 234 /* It's preamble time + signal time (16 + 4) */
 235 #define AR5K_INIT_OFDM_PREAMPLE_TIME            20
 236 /* Preamble time for 40MHz (turbo) operation (min ?) */
 237 #define AR5K_INIT_OFDM_PREAMBLE_TIME_MIN        14
 238 #define AR5K_INIT_OFDM_SYMBOL_TIME              4
 239 #define AR5K_INIT_OFDM_PLCP_BITS                22
 240
 241 /* Rx latency for 5 and 10MHz operation (max ?) */
 242 #define AR5K_INIT_RX_LAT_MAX                    63
 243 /* Tx latencies from initvals (5212 only but no problem
 244  * because we only tweak them on 5212) */
 245 #define AR5K_INIT_TX_LAT_A                      54
 246 #define AR5K_INIT_TX_LAT_BG                     384
 247 /* Tx latency for 40MHz (turbo) operation (min ?) */
 248 #define AR5K_INIT_TX_LAT_MIN                    32
 249 /* Default Tx/Rx latencies (same for 5211)*/
 250 #define AR5K_INIT_TX_LATENCY_5210               54
 251 #define AR5K_INIT_RX_LATENCY_5210               29
 252
 253 /* Tx frame to Tx data start delay */
 254 #define AR5K_INIT_TXF2TXD_START_DEFAULT         14
 255 #define AR5K_INIT_TXF2TXD_START_DELAY_10MHZ     12
 256 #define AR5K_INIT_TXF2TXD_START_DELAY_5MHZ      13
 257
 258 /* We need to increase PHY switch and agc settling time
 259  * on turbo mode */
 260 #define AR5K_SWITCH_SETTLING                    5760
 261 #define AR5K_SWITCH_SETTLING_TURBO              7168
 262
 263 #define AR5K_AGC_SETTLING                       28
 264 /* 38 on 5210 but shouldn't matter */
 265 #define AR5K_AGC_SETTLING_TURBO                 37
 266
 267
 268
 269 /*****************************\
 270 * GENERIC CHIPSET DEFINITIONS *
 271 \*****************************/
 272
 273 /**
 274  * enum ath5k_version - MAC Chips
 275  * @AR5K_AR5210: AR5210 (Crete)
 276  * @AR5K_AR5211: AR5211 (Oahu/Maui)
 277  * @AR5K_AR5212: AR5212 (Venice) and newer
 278  */
 279 enum ath5k_version {
 280         AR5K_AR5210     = 0,
 281         AR5K_AR5211     = 1,
 282         AR5K_AR5212     = 2,
 283 };
 284
 285 /**
 286  * enum ath5k_radio - PHY Chips
 287  * @AR5K_RF5110: RF5110 (Fez)
 288  * @AR5K_RF5111: RF5111 (Sombrero)
 289  * @AR5K_RF5112: RF2112/5112(A) (Derby/Derby2)
 290  * @AR5K_RF2413: RF2413/2414 (Griffin/Griffin-Lite)
 291  * @AR5K_RF5413: RF5413/5414/5424 (Eagle/Condor)
 292  * @AR5K_RF2316: RF2315/2316 (Cobra SoC)
 293  * @AR5K_RF2317: RF2317 (Spider SoC)
 294  * @AR5K_RF2425: RF2425/2417 (Swan/Nalla)
 295  */
 296 enum ath5k_radio {
 297         AR5K_RF5110     = 0,
 298         AR5K_RF5111     = 1,
 299         AR5K_RF5112     = 2,
 300         AR5K_RF2413     = 3,
 301         AR5K_RF5413     = 4,
 302         AR5K_RF2316     = 5,
 303         AR5K_RF2317     = 6,
 304         AR5K_RF2425     = 7,
 305 };
 306
 307 /*
 308  * Common silicon revision/version values
 309  */
 310
 311 #define AR5K_SREV_UNKNOWN       0xffff
 312
 313 #define AR5K_SREV_AR5210        0x00 /* Crete */
 314 #define AR5K_SREV_AR5311        0x10 /* Maui 1 */
 315 #define AR5K_SREV_AR5311A       0x20 /* Maui 2 */
 316 #define AR5K_SREV_AR5311B       0x30 /* Spirit */
 317 #define AR5K_SREV_AR5211        0x40 /* Oahu */
 318 #define AR5K_SREV_AR5212        0x50 /* Venice */
 319 #define AR5K_SREV_AR5312_R2     0x52 /* AP31 */
 320 #define AR5K_SREV_AR5212_V4     0x54 /* ??? */
 321 #define AR5K_SREV_AR5213        0x55 /* ??? */
 322 #define AR5K_SREV_AR5312_R7     0x57 /* AP30 */
 323 #define AR5K_SREV_AR2313_R8     0x58 /* AP43 */
 324 #define AR5K_SREV_AR5213A       0x59 /* Hainan */
 325 #define AR5K_SREV_AR2413        0x78 /* Griffin lite */
 326 #define AR5K_SREV_AR2414        0x70 /* Griffin */
 327 #define AR5K_SREV_AR2315_R6     0x86 /* AP51-Light */
 328 #define AR5K_SREV_AR2315_R7     0x87 /* AP51-Full */
 329 #define AR5K_SREV_AR5424        0x90 /* Condor */
 330 #define AR5K_SREV_AR2317_R1     0x90 /* AP61-Light */
 331 #define AR5K_SREV_AR2317_R2     0x91 /* AP61-Full */
 332 #define AR5K_SREV_AR5413        0xa4 /* Eagle lite */
 333 #define AR5K_SREV_AR5414        0xa0 /* Eagle */
 334 #define AR5K_SREV_AR2415        0xb0 /* Talon */
 335 #define AR5K_SREV_AR5416        0xc0 /* PCI-E */
 336 #define AR5K_SREV_AR5418        0xca /* PCI-E */
 337 #define AR5K_SREV_AR2425        0xe0 /* Swan */
 338 #define AR5K_SREV_AR2417        0xf0 /* Nala */
 339
 340 #define AR5K_SREV_RAD_5110      0x00
 341 #define AR5K_SREV_RAD_5111      0x10
 342 #define AR5K_SREV_RAD_5111A     0x15
 343 #define AR5K_SREV_RAD_2111      0x20
 344 #define AR5K_SREV_RAD_5112      0x30
 345 #define AR5K_SREV_RAD_5112A     0x35
 346 #define AR5K_SREV_RAD_5112B     0x36
 347 #define AR5K_SREV_RAD_2112      0x40
 348 #define AR5K_SREV_RAD_2112A     0x45
 349 #define AR5K_SREV_RAD_2112B     0x46
 350 #define AR5K_SREV_RAD_2413      0x50
 351 #define AR5K_SREV_RAD_5413      0x60
 352 #define AR5K_SREV_RAD_2316      0x70 /* Cobra SoC */
 353 #define AR5K_SREV_RAD_2317      0x80
 354 #define AR5K_SREV_RAD_5424      0xa0 /* Mostly same as 5413 */
 355 #define AR5K_SREV_RAD_2425      0xa2
 356 #define AR5K_SREV_RAD_5133      0xc0
 357
 358 #define AR5K_SREV_PHY_5211      0x30
 359 #define AR5K_SREV_PHY_5212      0x41
 360 #define AR5K_SREV_PHY_5212A     0x42
 361 #define AR5K_SREV_PHY_5212B     0x43
 362 #define AR5K_SREV_PHY_2413      0x45
 363 #define AR5K_SREV_PHY_5413      0x61
 364 #define AR5K_SREV_PHY_2425      0x70
 365
 366 /* TODO add support to mac80211 for vendor-specific rates and modes */
 367
 368 /**
 369  * DOC: Atheros XR
 370  *
 371  * Some of this information is based on Documentation from:
 372  *
 373  * http://madwifi-project.org/wiki/ChipsetFeatures/SuperAG
 374  *
 375  * Atheros' eXtended Range - range enhancing extension is a modulation scheme
 376  * that is supposed to double the link distance between an Atheros XR-enabled
 377  * client device with an Atheros XR-enabled access point. This is achieved
 378  * by increasing the receiver sensitivity up to, -105dBm, which is about 20dB
 379  * above what the 802.11 specifications demand. In addition, new (proprietary)
 380  * data rates are introduced: 3, 2, 1, 0.5 and 0.25 MBit/s.
 381  *
 382  * Please note that can you either use XR or TURBO but you cannot use both,
 383  * they are exclusive.
 384  *
 385  * Also note that we do not plan to support XR mode at least for now. You can
 386  * get a mode similar to XR by using 5MHz bwmode.
 387  */
 388
 389
 390 /**
 391  * DOC: Atheros SuperAG
 392  *
 393  * In addition to XR we have another modulation scheme called TURBO mode
 394  * that is supposed to provide a throughput transmission speed up to 40Mbit/s
 395  * -60Mbit/s at a 108Mbit/s signaling rate achieved through the bonding of two
 396  * 54Mbit/s 802.11g channels. To use this feature both ends must support it.
 397  * There is also a distinction between "static" and "dynamic" turbo modes:
 398  *
 399  * - Static: is the dumb version: devices set to this mode stick to it until
 400  *     the mode is turned off.
 401  *
 402  * - Dynamic: is the intelligent version, the network decides itself if it
 403  *     is ok to use turbo. As soon as traffic is detected on adjacent channels
 404  *     (which would get used in turbo mode), or when a non-turbo station joins
 405  *     the network, turbo mode won't be used until the situation changes again.
 406  *     Dynamic mode is achieved by Atheros' Adaptive Radio (AR) feature which
 407  *     monitors the used radio band in order to decide whether turbo mode may
 408  *     be used or not.
 409  *
 410  * This article claims Super G sticks to bonding of channels 5 and 6 for
 411  * USA:
 412  *
 413  * http://www.pcworld.com/article/id,113428-page,1/article.html
 414  *
 415  * The channel bonding seems to be driver specific though.
 416  *
 417  * In addition to TURBO modes we also have the following features for even
 418  * greater speed-up:
 419  *
 420  * - Bursting: allows multiple frames to be sent at once, rather than pausing
 421  *     after each frame. Bursting is a standards-compliant feature that can be
 422  *     used with any Access Point.
 423  *
 424  * - Fast frames: increases the amount of information that can be sent per
 425  *     frame, also resulting in a reduction of transmission overhead. It is a
 426  *     proprietary feature that needs to be supported by the Access Point.
 427  *
 428  * - Compression: data frames are compressed in real time using a Lempel Ziv
 429  *     algorithm. This is done transparently. Once this feature is enabled,
 430  *     compression and decompression takes place inside the chipset, without
 431  *     putting additional load on the host CPU.
 432  *
 433  * As with XR we also don't plan to support SuperAG features for now. You can
 434  * get a mode similar to TURBO by using 40MHz bwmode.
 435  */
 436
 437
 438 /**
 439  * enum ath5k_driver_mode - PHY operation mode
 440  * @AR5K_MODE_11A: 802.11a
 441  * @AR5K_MODE_11B: 802.11b
 442  * @AR5K_MODE_11G: 801.11g
 443  * @AR5K_MODE_MAX: Used for boundary checks
 444  *
 445  * Do not change the order here, we use these as
 446  * array indices and it also maps EEPROM structures.
 447  */
 448 enum ath5k_driver_mode {
 449         AR5K_MODE_11A           =       0,
 450         AR5K_MODE_11B           =       1,
 451         AR5K_MODE_11G           =       2,
 452         AR5K_MODE_MAX           =       3
 453 };
 454
 455 /**
 456  * enum ath5k_ant_mode - Antenna operation mode
 457  * @AR5K_ANTMODE_DEFAULT: Default antenna setup
 458  * @AR5K_ANTMODE_FIXED_A: Only antenna A is present
 459  * @AR5K_ANTMODE_FIXED_B: Only antenna B is present
 460  * @AR5K_ANTMODE_SINGLE_AP: STA locked on a single ap
 461  * @AR5K_ANTMODE_SECTOR_AP: AP with tx antenna set on tx desc
 462  * @AR5K_ANTMODE_SECTOR_STA: STA with tx antenna set on tx desc
 463  * @AR5K_ANTMODE_DEBUG: Debug mode -A -> Rx, B-> Tx-
 464  * @AR5K_ANTMODE_MAX: Used for boundary checks
 465  *
 466  * For more infos on antenna control check out phy.c
 467  */
 468 enum ath5k_ant_mode {
 469         AR5K_ANTMODE_DEFAULT    = 0,
 470         AR5K_ANTMODE_FIXED_A    = 1,
 471         AR5K_ANTMODE_FIXED_B    = 2,
 472         AR5K_ANTMODE_SINGLE_AP  = 3,
 473         AR5K_ANTMODE_SECTOR_AP  = 4,
 474         AR5K_ANTMODE_SECTOR_STA = 5,
 475         AR5K_ANTMODE_DEBUG      = 6,
 476         AR5K_ANTMODE_MAX,
 477 };
 478
 479 /**
 480  * enum ath5k_bw_mode - Bandwidth operation mode
 481  * @AR5K_BWMODE_DEFAULT: 20MHz, default operation
 482  * @AR5K_BWMODE_5MHZ: Quarter rate
 483  * @AR5K_BWMODE_10MHZ: Half rate
 484  * @AR5K_BWMODE_40MHZ: Turbo
 485  */
 486 enum ath5k_bw_mode {
 487         AR5K_BWMODE_DEFAULT     = 0,
 488         AR5K_BWMODE_5MHZ        = 1,
 489         AR5K_BWMODE_10MHZ       = 2,
 490         AR5K_BWMODE_40MHZ       = 3
 491 };
 492
 493
 494
 495 /****************\
 496   TX DEFINITIONS
 497 \****************/
 498
 499 /**
 500  * struct ath5k_tx_status - TX Status descriptor
 501  * @ts_seqnum: Sequence number
 502  * @ts_tstamp: Timestamp
 503  * @ts_status: Status code
 504  * @ts_final_idx: Final transmission series index
 505  * @ts_final_retry: Final retry count
 506  * @ts_rssi: RSSI for received ACK
 507  * @ts_shortretry: Short retry count
 508  * @ts_virtcol: Virtual collision count
 509  * @ts_antenna: Antenna used
 510  *
 511  * TX status descriptor gets filled by the hw
 512  * on each transmission attempt.
 513  */
 514 struct ath5k_tx_status {
 515         u16     ts_seqnum;
 516         u16     ts_tstamp;
 517         u8      ts_status;
 518         u8      ts_final_idx;
 519         u8      ts_final_retry;
 520         s8      ts_rssi;
 521         u8      ts_shortretry;
 522         u8      ts_virtcol;
 523         u8      ts_antenna;
 524 };
 525
 526 #define AR5K_TXSTAT_ALTRATE     0x80
 527 #define AR5K_TXERR_XRETRY       0x01
 528 #define AR5K_TXERR_FILT         0x02
 529 #define AR5K_TXERR_FIFO         0x04
 530
 531 /**
 532  * enum ath5k_tx_queue - Queue types used to classify tx queues.
 533  * @AR5K_TX_QUEUE_INACTIVE: q is unused -- see ath5k_hw_release_tx_queue
 534  * @AR5K_TX_QUEUE_DATA: A normal data queue
 535  * @AR5K_TX_QUEUE_BEACON: The beacon queue
 536  * @AR5K_TX_QUEUE_CAB: The after-beacon queue
 537  * @AR5K_TX_QUEUE_UAPSD: Unscheduled Automatic Power Save Delivery queue
 538  */
 539 enum ath5k_tx_queue {
 540         AR5K_TX_QUEUE_INACTIVE = 0,
 541         AR5K_TX_QUEUE_DATA,
 542         AR5K_TX_QUEUE_BEACON,
 543         AR5K_TX_QUEUE_CAB,
 544         AR5K_TX_QUEUE_UAPSD,
 545 };
 546
 547 #define AR5K_NUM_TX_QUEUES              10
 548 #define AR5K_NUM_TX_QUEUES_NOQCU        2
 549
 550 /**
 551  * enum ath5k_tx_queue_subtype - Queue sub-types to classify normal data queues
 552  * @AR5K_WME_AC_BK: Background traffic
 553  * @AR5K_WME_AC_BE: Best-effort (normal) traffic
 554  * @AR5K_WME_AC_VI: Video traffic
 555  * @AR5K_WME_AC_VO: Voice traffic
 556  *
 557  * These are the 4 Access Categories as defined in
 558  * WME spec. 0 is the lowest priority and 4 is the
 559  * highest. Normal data that hasn't been classified
 560  * goes to the Best Effort AC.
 561  */
 562 enum ath5k_tx_queue_subtype {
 563         AR5K_WME_AC_BK = 0,
 564         AR5K_WME_AC_BE,
 565         AR5K_WME_AC_VI,
 566         AR5K_WME_AC_VO,
 567 };
 568
 569 /**
 570  * enum ath5k_tx_queue_id - Queue ID numbers as returned by the hw functions
 571  * @AR5K_TX_QUEUE_ID_NOQCU_DATA: Data queue on AR5210 (no QCU available)
 572  * @AR5K_TX_QUEUE_ID_NOQCU_BEACON: Beacon queue on AR5210 (no QCU available)
 573  * @AR5K_TX_QUEUE_ID_DATA_MIN: Data queue min index
 574  * @AR5K_TX_QUEUE_ID_DATA_MAX: Data queue max index
 575  * @AR5K_TX_QUEUE_ID_CAB: Content after beacon queue
 576  * @AR5K_TX_QUEUE_ID_BEACON: Beacon queue
 577  * @AR5K_TX_QUEUE_ID_UAPSD: Urgent Automatic Power Save Delivery,
 578  *
 579  * Each number represents a hw queue. If hw does not support hw queues
 580  * (eg 5210) all data goes in one queue.
 581  */
 582 enum ath5k_tx_queue_id {
 583         AR5K_TX_QUEUE_ID_NOQCU_DATA     = 0,
 584         AR5K_TX_QUEUE_ID_NOQCU_BEACON   = 1,
 585         AR5K_TX_QUEUE_ID_DATA_MIN       = 0,
 586         AR5K_TX_QUEUE_ID_DATA_MAX       = 3,
 587         AR5K_TX_QUEUE_ID_UAPSD          = 7,
 588         AR5K_TX_QUEUE_ID_CAB            = 8,
 589         AR5K_TX_QUEUE_ID_BEACON         = 9,
 590 };
 591
 592 /*
 593  * Flags to set hw queue's parameters...
 594  */
 595 #define AR5K_TXQ_FLAG_TXOKINT_ENABLE            0x0001  /* Enable TXOK interrupt */
 596 #define AR5K_TXQ_FLAG_TXERRINT_ENABLE           0x0002  /* Enable TXERR interrupt */
 597 #define AR5K_TXQ_FLAG_TXEOLINT_ENABLE           0x0004  /* Enable TXEOL interrupt -not used- */
 598 #define AR5K_TXQ_FLAG_TXDESCINT_ENABLE          0x0008  /* Enable TXDESC interrupt -not used- */
 599 #define AR5K_TXQ_FLAG_TXURNINT_ENABLE           0x0010  /* Enable TXURN interrupt */
 600 #define AR5K_TXQ_FLAG_CBRORNINT_ENABLE          0x0020  /* Enable CBRORN interrupt */
 601 #define AR5K_TXQ_FLAG_CBRURNINT_ENABLE          0x0040  /* Enable CBRURN interrupt */
 602 #define AR5K_TXQ_FLAG_QTRIGINT_ENABLE           0x0080  /* Enable QTRIG interrupt */
 603 #define AR5K_TXQ_FLAG_TXNOFRMINT_ENABLE         0x0100  /* Enable TXNOFRM interrupt */
 604 #define AR5K_TXQ_FLAG_BACKOFF_DISABLE           0x0200  /* Disable random post-backoff */
 605 #define AR5K_TXQ_FLAG_RDYTIME_EXP_POLICY_ENABLE 0x0300  /* Enable ready time expiry policy (?)*/
 606 #define AR5K_TXQ_FLAG_FRAG_BURST_BACKOFF_ENABLE 0x0800  /* Enable backoff while bursting */
 607 #define AR5K_TXQ_FLAG_POST_FR_BKOFF_DIS         0x1000  /* Disable backoff while bursting */
 608 #define AR5K_TXQ_FLAG_COMPRESSION_ENABLE        0x2000  /* Enable hw compression -not implemented-*/
 609
 610 /**
 611  * struct ath5k_txq - Transmit queue state
 612  * @qnum: Hardware q number
 613  * @link: Link ptr in last TX desc
 614  * @q: Transmit queue (&struct list_head)
 615  * @lock: Lock on q and link
 616  * @setup: Is the queue configured
 617  * @txq_len:Number of queued buffers
 618  * @txq_max: Max allowed num of queued buffers
 619  * @txq_poll_mark: Used to check if queue got stuck
 620  * @txq_stuck: Queue stuck counter
 621  *
 622  * One of these exists for each hardware transmit queue.
 623  * Packets sent to us from above are assigned to queues based
 624  * on their priority.  Not all devices support a complete set
 625  * of hardware transmit queues. For those devices the array
 626  * sc_ac2q will map multiple priorities to fewer hardware queues
 627  * (typically all to one hardware queue).
 628  */
 629 struct ath5k_txq {
 630         unsigned int            qnum;
 631         u32                     *link;
 632         struct list_head        q;
 633         spinlock_t              lock;
 634         bool                    setup;
 635         int                     txq_len;
 636         int                     txq_max;
 637         bool                    txq_poll_mark;
 638         unsigned int            txq_stuck;
 639 };
 640
 641 /**
 642  * struct ath5k_txq_info - A struct to hold TX queue's parameters
 643  * @tqi_type: One of enum ath5k_tx_queue
 644  * @tqi_subtype: One of enum ath5k_tx_queue_subtype
 645  * @tqi_flags: TX queue flags (see above)
 646  * @tqi_aifs: Arbitrated Inter-frame Space
 647  * @tqi_cw_min: Minimum Contention Window
 648  * @tqi_cw_max: Maximum Contention Window
 649  * @tqi_cbr_period: Constant bit rate period
 650  * @tqi_ready_time: Time queue waits after an event when RDYTIME is enabled
 651  */
 652 struct ath5k_txq_info {
 653         enum ath5k_tx_queue tqi_type;
 654         enum ath5k_tx_queue_subtype tqi_subtype;
 655         u16     tqi_flags;
 656         u8      tqi_aifs;
 657         u16     tqi_cw_min;
 658         u16     tqi_cw_max;
 659         u32     tqi_cbr_period;
 660         u32     tqi_cbr_overflow_limit;
 661         u32     tqi_burst_time;
 662         u32     tqi_ready_time;
 663 };
 664
 665 /**
 666  * enum ath5k_pkt_type - Transmit packet types
 667  * @AR5K_PKT_TYPE_NORMAL: Normal data
 668  * @AR5K_PKT_TYPE_ATIM: ATIM
 669  * @AR5K_PKT_TYPE_PSPOLL: PS-Poll
 670  * @AR5K_PKT_TYPE_BEACON: Beacon
 671  * @AR5K_PKT_TYPE_PROBE_RESP: Probe response
 672  * @AR5K_PKT_TYPE_PIFS: PIFS
 673  * Used on tx control descriptor
 674  */
 675 enum ath5k_pkt_type {
 676         AR5K_PKT_TYPE_NORMAL            = 0,
 677         AR5K_PKT_TYPE_ATIM              = 1,
 678         AR5K_PKT_TYPE_PSPOLL            = 2,
 679         AR5K_PKT_TYPE_BEACON            = 3,
 680         AR5K_PKT_TYPE_PROBE_RESP        = 4,
 681         AR5K_PKT_TYPE_PIFS              = 5,
 682 };
 683
 684 /*
 685  * TX power and TPC settings
 686  */
 687 #define AR5K_TXPOWER_OFDM(_r, _v)       (                       \
 688         ((0 & 1) << ((_v) + 6)) |                               \
 689         (((ah->ah_txpower.txp_rates_power_table[(_r)]) & 0x3f) << (_v)) \
 690 )
 691
 692 #define AR5K_TXPOWER_CCK(_r, _v)        (                       \
 693         (ah->ah_txpower.txp_rates_power_table[(_r)] & 0x3f) << (_v)     \
 694 )
 695
 696
 697
 698 /****************\
 699   RX DEFINITIONS
 700 \****************/
 701
 702 /**
 703  * struct ath5k_rx_status - RX Status descriptor
 704  * @rs_datalen: Data length
 705  * @rs_tstamp: Timestamp
 706  * @rs_status: Status code
 707  * @rs_phyerr: PHY error mask
 708  * @rs_rssi: RSSI in 0.5dbm units
 709  * @rs_keyix: Index to the key used for decrypting
 710  * @rs_rate: Rate used to decode the frame
 711  * @rs_antenna: Antenna used to receive the frame
 712  * @rs_more: Indicates this is a frame fragment (Fast frames)
 713  */
 714 struct ath5k_rx_status {
 715         u16     rs_datalen;
 716         u16     rs_tstamp;
 717         u8      rs_status;
 718         u8      rs_phyerr;
 719         s8      rs_rssi;
 720         u8      rs_keyix;
 721         u8      rs_rate;
 722         u8      rs_antenna;
 723         u8      rs_more;
 724 };
 725
 726 #define AR5K_RXERR_CRC          0x01
 727 #define AR5K_RXERR_PHY          0x02
 728 #define AR5K_RXERR_FIFO         0x04
 729 #define AR5K_RXERR_DECRYPT      0x08
 730 #define AR5K_RXERR_MIC          0x10
 731 #define AR5K_RXKEYIX_INVALID    ((u8) -1)
 732 #define AR5K_TXKEYIX_INVALID    ((u32) -1)
 733
 734
 735 /**************************\
 736  BEACON TIMERS DEFINITIONS
 737 \**************************/
 738
 739 #define AR5K_BEACON_PERIOD      0x0000ffff
 740 #define AR5K_BEACON_ENA         0x00800000 /*enable beacon xmit*/
 741 #define AR5K_BEACON_RESET_TSF   0x01000000 /*force a TSF reset*/
 742
 743
 744 /*
 745  * TSF to TU conversion:
 746  *
 747  * TSF is a 64bit value in usec (microseconds).
 748  * TU is a 32bit value and defined by IEEE802.11 (page 6) as "A measurement of
 749  * time equal to 1024 usec", so it's roughly milliseconds (usec / 1024).
 750  */
 751 #define TSF_TO_TU(_tsf) (u32)((_tsf) >> 10)
 752
 753
 754
 755 /*******************************\
 756   GAIN OPTIMIZATION DEFINITIONS
 757 \*******************************/
 758
 759 /**
 760  * enum ath5k_rfgain - RF Gain optimization engine state
 761  * @AR5K_RFGAIN_INACTIVE: Engine disabled
 762  * @AR5K_RFGAIN_ACTIVE: Probe active
 763  * @AR5K_RFGAIN_READ_REQUESTED: Probe requested
 764  * @AR5K_RFGAIN_NEED_CHANGE: Gain_F needs change
 765  */
 766 enum ath5k_rfgain {
 767         AR5K_RFGAIN_INACTIVE = 0,
 768         AR5K_RFGAIN_ACTIVE,
 769         AR5K_RFGAIN_READ_REQUESTED,
 770         AR5K_RFGAIN_NEED_CHANGE,
 771 };
 772
 773 /**
 774  * struct ath5k_gain - RF Gain optimization engine state data
 775  * @g_step_idx: Current step index
 776  * @g_current: Current gain
 777  * @g_target: Target gain
 778  * @g_low: Low gain boundary
 779  * @g_high: High gain boundary
 780  * @g_f_corr: Gain_F correction
 781  * @g_state: One of enum ath5k_rfgain
 782  */
 783 struct ath5k_gain {
 784         u8                      g_step_idx;
 785         u8                      g_current;
 786         u8                      g_target;
 787         u8                      g_low;
 788         u8                      g_high;
 789         u8                      g_f_corr;
 790         u8                      g_state;
 791 };
 792
 793
 794
 795 /********************\
 796   COMMON DEFINITIONS
 797 \********************/
 798
 799 #define AR5K_SLOT_TIME_9        396
 800 #define AR5K_SLOT_TIME_20       880
 801 #define AR5K_SLOT_TIME_MAX      0xffff
 802
 803 /**
 804  * struct ath5k_athchan_2ghz - 2GHz to 5GHZ map for RF5111
 805  * @a2_flags: Channel flags (internal)
 806  * @a2_athchan: HW channel number (internal)
 807  *
 808  * This structure is used to map 2GHz channels to
 809  * 5GHz Atheros channels on 2111 frequency converter
 810  * that comes together with RF5111
 811  * TODO: Clean up
 812  */
 813 struct ath5k_athchan_2ghz {
 814         u32     a2_flags;
 815         u16     a2_athchan;
 816 };
 817
 818 /**
 819  * enum ath5k_dmasize -  DMA size definitions (2^(n+2))
 820  * @AR5K_DMASIZE_4B: 4Bytes
 821  * @AR5K_DMASIZE_8B: 8Bytes
 822  * @AR5K_DMASIZE_16B: 16Bytes
 823  * @AR5K_DMASIZE_32B: 32Bytes
 824  * @AR5K_DMASIZE_64B: 64Bytes (Default)
 825  * @AR5K_DMASIZE_128B: 128Bytes
 826  * @AR5K_DMASIZE_256B: 256Bytes
 827  * @AR5K_DMASIZE_512B: 512Bytes
 828  *
 829  * These are used to set DMA burst size on hw
 830  *
 831  * Note: Some platforms can't handle more than 4Bytes
 832  * be careful on embedded boards.
 833  */
 834 enum ath5k_dmasize {
 835         AR5K_DMASIZE_4B = 0,
 836         AR5K_DMASIZE_8B,
 837         AR5K_DMASIZE_16B,
 838         AR5K_DMASIZE_32B,
 839         AR5K_DMASIZE_64B,
 840         AR5K_DMASIZE_128B,
 841         AR5K_DMASIZE_256B,
 842         AR5K_DMASIZE_512B
 843 };
 844
 845
 846
 847 /******************\
 848   RATE DEFINITIONS
 849 \******************/
 850
 851 /**
 852  * DOC: Rate codes
 853  *
 854  * Seems the ar5xxx hardware supports up to 32 rates, indexed by 1-32.
 855  *
 856  * The rate code is used to get the RX rate or set the TX rate on the
 857  * hardware descriptors. It is also used for internal modulation control
 858  * and settings.
 859  *
 860  * This is the hardware rate map we are aware of (html unfriendly):
 861  *
 862  * Rate code    Rate (Kbps)
 863  * ---------    -----------
 864  * 0x01          3000 (XR)
 865  * 0x02          1000 (XR)
 866  * 0x03           250 (XR)
 867  * 0x04 - 05    -Reserved-
 868  * 0x06          2000 (XR)
 869  * 0x07           500 (XR)
 870  * 0x08         48000 (OFDM)
 871  * 0x09         24000 (OFDM)
 872  * 0x0A         12000 (OFDM)
 873  * 0x0B          6000 (OFDM)
 874  * 0x0C         54000 (OFDM)
 875  * 0x0D         36000 (OFDM)
 876  * 0x0E         18000 (OFDM)
 877  * 0x0F          9000 (OFDM)
 878  * 0x10 - 17    -Reserved-
 879  * 0x18         11000L (CCK)
 880  * 0x19          5500L (CCK)
 881  * 0x1A          2000L (CCK)
 882  * 0x1B          1000L (CCK)
 883  * 0x1C         11000S (CCK)
 884  * 0x1D          5500S (CCK)
 885  * 0x1E          2000S (CCK)
 886  * 0x1F         -Reserved-
 887  *
 888  * "S" indicates CCK rates with short preamble and "L" with long preamble.
 889  *
 890  * AR5211 has different rate codes for CCK (802.11B) rates. It only uses the
 891  * lowest 4 bits, so they are the same as above with a 0xF mask.
 892  * (0xB, 0xA, 0x9 and 0x8 for 1M, 2M, 5.5M and 11M).
 893  * We handle this in ath5k_setup_bands().
 894  */
 895 #define AR5K_MAX_RATES 32
 896
 897 /* B */
 898 #define ATH5K_RATE_CODE_1M      0x1B
 899 #define ATH5K_RATE_CODE_2M      0x1A
 900 #define ATH5K_RATE_CODE_5_5M    0x19
 901 #define ATH5K_RATE_CODE_11M     0x18
 902 /* A and G */
 903 #define ATH5K_RATE_CODE_6M      0x0B
 904 #define ATH5K_RATE_CODE_9M      0x0F
 905 #define ATH5K_RATE_CODE_12M     0x0A
 906 #define ATH5K_RATE_CODE_18M     0x0E
 907 #define ATH5K_RATE_CODE_24M     0x09
 908 #define ATH5K_RATE_CODE_36M     0x0D
 909 #define ATH5K_RATE_CODE_48M     0x08
 910 #define ATH5K_RATE_CODE_54M     0x0C
 911
 912 /* Adding this flag to rate_code on B rates
 913  * enables short preamble */
 914 #define AR5K_SET_SHORT_PREAMBLE 0x04
 915
 916 /*
 917  * Crypto definitions
 918  */
 919
 920 #define AR5K_KEYCACHE_SIZE      8
 921 extern bool ath5k_modparam_nohwcrypt;
 922
 923 /***********************\
 924  HW RELATED DEFINITIONS
 925 \***********************/
 926
 927 /*
 928  * Misc definitions
 929  */
 930 #define AR5K_RSSI_EP_MULTIPLIER (1 << 7)
 931
 932 #define AR5K_ASSERT_ENTRY(_e, _s) do {          \
 933         if (_e >= _s)                           \
 934                 return false;                   \
 935 } while (0)
 936
 937 /*
 938  * Hardware interrupt abstraction
 939  */
 940
 941 /**
 942  * enum ath5k_int - Hardware interrupt masks helpers
 943  * @AR5K_INT_RXOK: Frame successfully received
 944  * @AR5K_INT_RXDESC: Request RX descriptor/Read RX descriptor
 945  * @AR5K_INT_RXERR: Frame reception failed
 946  * @AR5K_INT_RXNOFRM: No frame received within a specified time period
 947  * @AR5K_INT_RXEOL: Reached "End Of List", means we need more RX descriptors
 948  * @AR5K_INT_RXORN: Indicates we got RX FIFO overrun. Note that Rx overrun is
 949  *              not always fatal, on some chips we can continue operation
 950  *              without resetting the card, that's why %AR5K_INT_FATAL is not
 951  *              common for all chips.
 952  * @AR5K_INT_RX_ALL: Mask to identify all RX related interrupts
 953  *
 954  * @AR5K_INT_TXOK: Frame transmission success
 955  * @AR5K_INT_TXDESC: Request TX descriptor/Read TX status descriptor
 956  * @AR5K_INT_TXERR: Frame transmission failure
 957  * @AR5K_INT_TXEOL: Received End Of List for VEOL (Virtual End Of List). The
 958  *              Queue Control Unit (QCU) signals an EOL interrupt only if a
 959  *              descriptor's LinkPtr is NULL. For more details, refer to:
 960  *              "http://www.freepatentsonline.com/20030225739.html"
 961  * @AR5K_INT_TXNOFRM: No frame was transmitted within a specified time period
 962  * @AR5K_INT_TXURN: Indicates we got TX FIFO underrun. In such case we should
 963  *              increase the TX trigger threshold.
 964  * @AR5K_INT_TX_ALL: Mask to identify all TX related interrupts
 965  *
 966  * @AR5K_INT_MIB: Indicates the either Management Information Base counters or
 967  *              one of the PHY error counters reached the maximum value and
 968  *              should be read and cleared.
 969  * @AR5K_INT_SWI: Software triggered interrupt.
 970  * @AR5K_INT_RXPHY: RX PHY Error
 971  * @AR5K_INT_RXKCM: RX Key cache miss
 972  * @AR5K_INT_SWBA: SoftWare Beacon Alert - indicates its time to send a
 973  *              beacon that must be handled in software. The alternative is if
 974  *              you have VEOL support, in that case you let the hardware deal
 975  *              with things.
 976  * @AR5K_INT_BRSSI: Beacon received with an RSSI value below our threshold
 977  * @AR5K_INT_BMISS: If in STA mode this indicates we have stopped seeing
 978  *              beacons from the AP have associated with, we should probably
 979  *              try to reassociate. When in IBSS mode this might mean we have
 980  *              not received any beacons from any local stations. Note that
 981  *              every station in an IBSS schedules to send beacons at the
 982  *              Target Beacon Transmission Time (TBTT) with a random backoff.
 983  * @AR5K_INT_BNR: Beacon queue got triggered (DMA beacon alert) while empty.
 984  * @AR5K_INT_TIM: Beacon with local station's TIM bit set
 985  * @AR5K_INT_DTIM: Beacon with DTIM bit and zero DTIM count received
 986  * @AR5K_INT_DTIM_SYNC: DTIM sync lost
 987  * @AR5K_INT_GPIO: GPIO interrupt is used for RF Kill switches connected to
 988  *              our GPIO pins.
 989  * @AR5K_INT_BCN_TIMEOUT: Beacon timeout, we waited after TBTT but got noting
 990  * @AR5K_INT_CAB_TIMEOUT: We waited for CAB traffic after the beacon but got
 991  *              nothing or an incomplete CAB frame sequence.
 992  * @AR5K_INT_QCBRORN: A queue got it's CBR counter expired
 993  * @AR5K_INT_QCBRURN: A queue got triggered wile empty
 994  * @AR5K_INT_QTRIG: A queue got triggered
 995  *
 996  * @AR5K_INT_FATAL: Fatal errors were encountered, typically caused by bus/DMA
 997  *              errors. Indicates we need to reset the card.
 998  * @AR5K_INT_GLOBAL: Used to clear and set the IER
 999  * @AR5K_INT_NOCARD: Signals the card has been removed
1000  * @AR5K_INT_COMMON: Common interrupts shared among MACs with the same
1001  *              bit value
1002  *
1003  * These are mapped to take advantage of some common bits
1004  * between the MACs, to be able to set intr properties
1005  * easier. Some of them are not used yet inside hw.c. Most map
1006  * to the respective hw interrupt value as they are common among different
1007  * MACs.
1008  */
1009 enum ath5k_int {
1010         AR5K_INT_RXOK   = 0x00000001,
1011         AR5K_INT_RXDESC = 0x00000002,
1012         AR5K_INT_RXERR  = 0x00000004,
1013         AR5K_INT_RXNOFRM = 0x00000008,
1014         AR5K_INT_RXEOL  = 0x00000010,
1015         AR5K_INT_RXORN  = 0x00000020,
1016         AR5K_INT_TXOK   = 0x00000040,
1017         AR5K_INT_TXDESC = 0x00000080,
1018         AR5K_INT_TXERR  = 0x00000100,
1019         AR5K_INT_TXNOFRM = 0x00000200,
1020         AR5K_INT_TXEOL  = 0x00000400,
1021         AR5K_INT_TXURN  = 0x00000800,
1022         AR5K_INT_MIB    = 0x00001000,
1023         AR5K_INT_SWI    = 0x00002000,
1024         AR5K_INT_RXPHY  = 0x00004000,
1025         AR5K_INT_RXKCM  = 0x00008000,
1026         AR5K_INT_SWBA   = 0x00010000,
1027         AR5K_INT_BRSSI  = 0x00020000,
1028         AR5K_INT_BMISS  = 0x00040000,
1029         AR5K_INT_FATAL  = 0x00080000, /* Non common */
1030         AR5K_INT_BNR    = 0x00100000, /* Non common */
1031         AR5K_INT_TIM    = 0x00200000, /* Non common */
1032         AR5K_INT_DTIM   = 0x00400000, /* Non common */
1033         AR5K_INT_DTIM_SYNC =    0x00800000, /* Non common */
1034         AR5K_INT_GPIO   =       0x01000000,
1035         AR5K_INT_BCN_TIMEOUT =  0x02000000, /* Non common */
1036         AR5K_INT_CAB_TIMEOUT =  0x04000000, /* Non common */
1037         AR5K_INT_QCBRORN =      0x08000000, /* Non common */
1038         AR5K_INT_QCBRURN =      0x10000000, /* Non common */
1039         AR5K_INT_QTRIG  =       0x20000000, /* Non common */
1040         AR5K_INT_GLOBAL =       0x80000000,
1041
1042         AR5K_INT_TX_ALL = AR5K_INT_TXOK
1043                 | AR5K_INT_TXDESC
1044                 | AR5K_INT_TXERR
1045                 | AR5K_INT_TXNOFRM
1046                 | AR5K_INT_TXEOL
1047                 | AR5K_INT_TXURN,
1048
1049         AR5K_INT_RX_ALL = AR5K_INT_RXOK
1050                 | AR5K_INT_RXDESC
1051                 | AR5K_INT_RXERR
1052                 | AR5K_INT_RXNOFRM
1053                 | AR5K_INT_RXEOL
1054                 | AR5K_INT_RXORN,
1055
1056         AR5K_INT_COMMON  = AR5K_INT_RXOK
1057                 | AR5K_INT_RXDESC
1058                 | AR5K_INT_RXERR
1059                 | AR5K_INT_RXNOFRM
1060                 | AR5K_INT_RXEOL
1061                 | AR5K_INT_RXORN
1062                 | AR5K_INT_TXOK
1063                 | AR5K_INT_TXDESC
1064                 | AR5K_INT_TXERR
1065                 | AR5K_INT_TXNOFRM
1066                 | AR5K_INT_TXEOL
1067                 | AR5K_INT_TXURN
1068                 | AR5K_INT_MIB
1069                 | AR5K_INT_SWI
1070                 | AR5K_INT_RXPHY
1071                 | AR5K_INT_RXKCM
1072                 | AR5K_INT_SWBA
1073                 | AR5K_INT_BRSSI
1074                 | AR5K_INT_BMISS
1075                 | AR5K_INT_GPIO
1076                 | AR5K_INT_GLOBAL,
1077
1078         AR5K_INT_NOCARD = 0xffffffff
1079 };
1080
1081 /**
1082  * enum ath5k_calibration_mask - Mask which calibration is active at the moment
1083  * @AR5K_CALIBRATION_FULL: Full calibration (AGC + SHORT)
1084  * @AR5K_CALIBRATION_SHORT: Short calibration (NF + I/Q)
1085  * @AR5K_CALIBRATION_NF: Noise Floor calibration
1086  * @AR5K_CALIBRATION_ANI: Adaptive Noise Immunity
1087  */
1088 enum ath5k_calibration_mask {
1089         AR5K_CALIBRATION_FULL = 0x01,
1090         AR5K_CALIBRATION_SHORT = 0x02,
1091         AR5K_CALIBRATION_NF = 0x04,
1092         AR5K_CALIBRATION_ANI = 0x08,
1093 };
1094
1095 /**
1096  * enum ath5k_power_mode - Power management modes
1097  * @AR5K_PM_UNDEFINED: Undefined
1098  * @AR5K_PM_AUTO: Allow card to sleep if possible
1099  * @AR5K_PM_AWAKE: Force card to wake up
1100  * @AR5K_PM_FULL_SLEEP: Force card to full sleep (DANGEROUS)
1101  * @AR5K_PM_NETWORK_SLEEP: Allow to sleep for a specified duration
1102  *
1103  * Currently only PM_AWAKE is used, FULL_SLEEP and NETWORK_SLEEP/AUTO
1104  * are also known to have problems on some cards. This is not a big
1105  * problem though because we can have almost the same effect as
1106  * FULL_SLEEP by putting card on warm reset (it's almost powered down).
1107  */
1108 enum ath5k_power_mode {
1109         AR5K_PM_UNDEFINED = 0,
1110         AR5K_PM_AUTO,
1111         AR5K_PM_AWAKE,
1112         AR5K_PM_FULL_SLEEP,
1113         AR5K_PM_NETWORK_SLEEP,
1114 };
1115
1116 /*
1117  * These match net80211 definitions (not used in
1118  * mac80211).
1119  * TODO: Clean this up
1120  */
1121 #define AR5K_LED_INIT   0 /*IEEE80211_S_INIT*/
1122 #define AR5K_LED_SCAN   1 /*IEEE80211_S_SCAN*/
1123 #define AR5K_LED_AUTH   2 /*IEEE80211_S_AUTH*/
1124 #define AR5K_LED_ASSOC  3 /*IEEE80211_S_ASSOC*/
1125 #define AR5K_LED_RUN    4 /*IEEE80211_S_RUN*/
1126
1127 /* GPIO-controlled software LED */
1128 #define AR5K_SOFTLED_PIN        0
1129 #define AR5K_SOFTLED_ON         0
1130 #define AR5K_SOFTLED_OFF        1
1131
1132
1133 /* XXX: we *may* move cap_range stuff to struct wiphy */
1134 struct ath5k_capabilities {
1135         /*
1136          * Supported PHY modes
1137          * (ie. AR5K_MODE_11A, AR5K_MODE_11B, ...)
1138          */
1139         DECLARE_BITMAP(cap_mode, AR5K_MODE_MAX);
1140
1141         /*
1142          * Frequency range (without regulation restrictions)
1143          */
1144         struct {
1145                 u16     range_2ghz_min;
1146                 u16     range_2ghz_max;
1147                 u16     range_5ghz_min;
1148                 u16     range_5ghz_max;
1149         } cap_range;
1150
1151         /*
1152          * Values stored in the EEPROM (some of them...)
1153          */
1154         struct ath5k_eeprom_info        cap_eeprom;
1155
1156         /*
1157          * Queue information
1158          */
1159         struct {
1160                 u8      q_tx_num;
1161         } cap_queues;
1162
1163         bool cap_has_phyerr_counters;
1164         bool cap_has_mrr_support;
1165         bool cap_needs_2GHz_ovr;
1166 };
1167
1168 /* size of noise floor history (keep it a power of two) */
1169 #define ATH5K_NF_CAL_HIST_MAX   8
1170 struct ath5k_nfcal_hist {
1171         s16 index;                              /* current index into nfval */
1172         s16 nfval[ATH5K_NF_CAL_HIST_MAX];       /* last few noise floors */
1173 };
1174
1175 #define ATH5K_LED_MAX_NAME_LEN 31
1176
1177 /*
1178  * State for LED triggers
1179  */
1180 struct ath5k_led {
1181         char name[ATH5K_LED_MAX_NAME_LEN + 1];  /* name of the LED in sysfs */
1182         struct ath5k_hw *ah;                    /* driver state */
1183         struct led_classdev led_dev;            /* led classdev */
1184 };
1185
1186 /* Rfkill */
1187 struct ath5k_rfkill {
1188         /* GPIO PIN for rfkill */
1189         u16 gpio;
1190         /* polarity of rfkill GPIO PIN */
1191         bool polarity;
1192         /* RFKILL toggle tasklet */
1193         struct tasklet_struct toggleq;
1194 };
1195
1196 /* statistics */
1197 struct ath5k_statistics {
1198         /* antenna use */
1199         unsigned int antenna_rx[5];     /* frames count per antenna RX */
1200         unsigned int antenna_tx[5];     /* frames count per antenna TX */
1201
1202         /* frame errors */
1203         unsigned int rx_all_count;      /* all RX frames, including errors */
1204         unsigned int tx_all_count;      /* all TX frames, including errors */
1205         unsigned int rx_bytes_count;    /* all RX bytes, including errored pkts
1206                                          * and the MAC headers for each packet
1207                                          */
1208         unsigned int tx_bytes_count;    /* all TX bytes, including errored pkts
1209                                          * and the MAC headers and padding for
1210                                          * each packet.
1211                                          */
1212         unsigned int rxerr_crc;
1213         unsigned int rxerr_phy;
1214         unsigned int rxerr_phy_code[32];
1215         unsigned int rxerr_fifo;
1216         unsigned int rxerr_decrypt;
1217         unsigned int rxerr_mic;
1218         unsigned int rxerr_proc;
1219         unsigned int rxerr_jumbo;
1220         unsigned int txerr_retry;
1221         unsigned int txerr_fifo;
1222         unsigned int txerr_filt;
1223
1224         /* MIB counters */
1225         unsigned int ack_fail;
1226         unsigned int rts_fail;
1227         unsigned int rts_ok;
1228         unsigned int fcs_error;
1229         unsigned int beacons;
1230
1231         unsigned int mib_intr;
1232         unsigned int rxorn_intr;
1233         unsigned int rxeol_intr;
1234 };
1235
1236 /*
1237  * Misc defines
1238  */
1239
1240 #define AR5K_MAX_GPIO           10
1241 #define AR5K_MAX_RF_BANKS       8
1242
1243 #if CHAN_DEBUG
1244 #define ATH_CHAN_MAX    (26 + 26 + 26 + 200 + 200)
1245 #else
1246 #define ATH_CHAN_MAX    (14 + 14 + 14 + 252 + 20)
1247 #endif
1248
1249 #define ATH_RXBUF       40              /* number of RX buffers */
1250 #define ATH_TXBUF       200             /* number of TX buffers */
1251 #define ATH_BCBUF       4               /* number of beacon buffers */
1252 #define ATH5K_TXQ_LEN_MAX       (ATH_TXBUF / 4)         /* bufs per queue */
1253 #define ATH5K_TXQ_LEN_LOW       (ATH5K_TXQ_LEN_MAX / 2) /* low mark */
1254
1255 DECLARE_EWMA(beacon_rssi, 10, 8)
1256
1257 /* Driver state associated with an instance of a device */
1258 struct ath5k_hw {
1259         struct ath_common       common;
1260
1261         struct pci_dev          *pdev;
1262         struct device           *dev;           /* for dma mapping */
1263         int irq;
1264         u16 devid;
1265         void __iomem            *iobase;        /* address of the device */
1266         struct mutex            lock;           /* dev-level lock */
1267         struct ieee80211_hw     *hw;            /* IEEE 802.11 common */
1268         struct ieee80211_supported_band sbands[NUM_NL80211_BANDS];
1269         struct ieee80211_channel channels[ATH_CHAN_MAX];
1270         struct ieee80211_rate   rates[NUM_NL80211_BANDS][AR5K_MAX_RATES];
1271         s8                      rate_idx[NUM_NL80211_BANDS][AR5K_MAX_RATES];
1272         enum nl80211_iftype     opmode;
1273
1274 #ifdef CONFIG_ATH5K_DEBUG
1275         struct ath5k_dbg_info   debug;          /* debug info */
1276 #endif /* CONFIG_ATH5K_DEBUG */
1277
1278         struct ath5k_buf        *bufptr;        /* allocated buffer ptr */
1279         struct ath5k_desc       *desc;          /* TX/RX descriptors */
1280         dma_addr_t              desc_daddr;     /* DMA (physical) address */
1281         size_t                  desc_len;       /* size of TX/RX descriptors */
1282
1283         DECLARE_BITMAP(status, 4);
1284 #define ATH_STAT_INVALID        0               /* disable hardware accesses */
1285 #define ATH_STAT_LEDSOFT        2               /* enable LED gpio status */
1286 #define ATH_STAT_STARTED        3               /* opened & irqs enabled */
1287 #define ATH_STAT_RESET          4               /* hw reset */
1288
1289         unsigned int            filter_flags;   /* HW flags, AR5K_RX_FILTER_* */
1290         unsigned int            fif_filter_flags; /* Current FIF_* filter flags */
1291         struct ieee80211_channel *curchan;      /* current h/w channel */
1292
1293         u16                     nvifs;
1294
1295         enum ath5k_int          imask;          /* interrupt mask copy */
1296
1297         spinlock_t              irqlock;
1298         bool                    rx_pending;     /* rx tasklet pending */
1299         bool                    tx_pending;     /* tx tasklet pending */
1300
1301         u8                      bssidmask[ETH_ALEN];
1302
1303         unsigned int            led_pin,        /* GPIO pin for driving LED */
1304                                 led_on;         /* pin setting for LED on */
1305
1306         struct work_struct      reset_work;     /* deferred chip reset */
1307         struct work_struct      calib_work;     /* deferred phy calibration */
1308
1309         struct list_head        rxbuf;          /* receive buffer */
1310         spinlock_t              rxbuflock;
1311         u32                     *rxlink;        /* link ptr in last RX desc */
1312         struct tasklet_struct   rxtq;           /* rx intr tasklet */
1313         struct ath5k_led        rx_led;         /* rx led */
1314
1315         struct list_head        txbuf;          /* transmit buffer */
1316         spinlock_t              txbuflock;
1317         unsigned int            txbuf_len;      /* buf count in txbuf list */
1318         struct ath5k_txq        txqs[AR5K_NUM_TX_QUEUES];       /* tx queues */
1319         struct tasklet_struct   txtq;           /* tx intr tasklet */
1320         struct ath5k_led        tx_led;         /* tx led */
1321
1322         struct ath5k_rfkill     rf_kill;
1323
1324         spinlock_t              block;          /* protects beacon */
1325         struct tasklet_struct   beacontq;       /* beacon intr tasklet */
1326         struct list_head        bcbuf;          /* beacon buffer */
1327         struct ieee80211_vif    *bslot[ATH_BCBUF];
1328         u16                     num_ap_vifs;
1329         u16                     num_adhoc_vifs;
1330         u16                     num_mesh_vifs;
1331         unsigned int            bhalq,          /* SW q for outgoing beacons */
1332                                 bmisscount,     /* missed beacon transmits */
1333                                 bintval,        /* beacon interval in TU */
1334                                 bsent;
1335         unsigned int            nexttbtt;       /* next beacon time in TU */
1336         struct ath5k_txq        *cabq;          /* content after beacon */
1337
1338         bool                    assoc;          /* associate state */
1339         bool                    enable_beacon;  /* true if beacons are on */
1340
1341         struct ath5k_statistics stats;
1342
1343         struct ath5k_ani_state  ani_state;
1344         struct tasklet_struct   ani_tasklet;    /* ANI calibration */
1345
1346         struct delayed_work     tx_complete_work;
1347
1348         struct survey_info      survey;         /* collected survey info */
1349
1350         enum ath5k_int          ah_imr;
1351
1352         struct ieee80211_channel *ah_current_channel;
1353         bool                    ah_iq_cal_needed;
1354         bool                    ah_single_chip;
1355
1356         enum ath5k_version      ah_version;
1357         enum ath5k_radio        ah_radio;
1358         u32                     ah_mac_srev;
1359         u16                     ah_mac_version;
1360         u16                     ah_phy_revision;
1361         u16                     ah_radio_5ghz_revision;
1362         u16                     ah_radio_2ghz_revision;
1363
1364 #define ah_modes                ah_capabilities.cap_mode
1365 #define ah_ee_version           ah_capabilities.cap_eeprom.ee_version
1366
1367         u8                      ah_retry_long;
1368         u8                      ah_retry_short;
1369
1370         bool                    ah_use_32khz_clock;
1371
1372         u8                      ah_coverage_class;
1373         bool                    ah_ack_bitrate_high;
1374         u8                      ah_bwmode;
1375         bool                    ah_short_slot;
1376
1377         /* Antenna Control */
1378         u32                     ah_ant_ctl[AR5K_EEPROM_N_MODES][AR5K_ANT_MAX];
1379         u8                      ah_ant_mode;
1380         u8                      ah_tx_ant;
1381         u8                      ah_def_ant;
1382
1383         struct ath5k_capabilities ah_capabilities;
1384
1385         struct ath5k_txq_info   ah_txq[AR5K_NUM_TX_QUEUES];
1386         u32                     ah_txq_status;
1387         u32                     ah_txq_imr_txok;
1388         u32                     ah_txq_imr_txerr;
1389         u32                     ah_txq_imr_txurn;
1390         u32                     ah_txq_imr_txdesc;
1391         u32                     ah_txq_imr_txeol;
1392         u32                     ah_txq_imr_cbrorn;
1393         u32                     ah_txq_imr_cbrurn;
1394         u32                     ah_txq_imr_qtrig;
1395         u32                     ah_txq_imr_nofrm;
1396
1397         u32                     ah_txq_isr_txok_all;
1398         u32                     ah_txq_isr_txurn;
1399         u32                     ah_txq_isr_qcborn;
1400         u32                     ah_txq_isr_qcburn;
1401         u32                     ah_txq_isr_qtrig;
1402
1403         u32                     *ah_rf_banks;
1404         size_t                  ah_rf_banks_size;
1405         size_t                  ah_rf_regs_count;
1406         struct ath5k_gain       ah_gain;
1407         u8                      ah_offset[AR5K_MAX_RF_BANKS];
1408
1409
1410         struct {
1411                 /* Temporary tables used for interpolation */
1412                 u8              tmpL[AR5K_EEPROM_N_PD_GAINS]
1413                                         [AR5K_EEPROM_POWER_TABLE_SIZE];
1414                 u8              tmpR[AR5K_EEPROM_N_PD_GAINS]
1415                                         [AR5K_EEPROM_POWER_TABLE_SIZE];
1416                 u8              txp_pd_table[AR5K_EEPROM_POWER_TABLE_SIZE * 2];
1417                 u16             txp_rates_power_table[AR5K_MAX_RATES];
1418                 u8              txp_min_idx;
1419                 bool            txp_tpc;
1420                 /* Values in 0.25dB units */
1421                 s16             txp_min_pwr;
1422                 s16             txp_max_pwr;
1423                 s16             txp_cur_pwr;
1424                 /* Values in 0.5dB units */
1425                 s16             txp_offset;
1426                 s16             txp_ofdm;
1427                 s16             txp_cck_ofdm_gainf_delta;
1428                 /* Value in dB units */
1429                 s16             txp_cck_ofdm_pwr_delta;
1430                 bool            txp_setup;
1431                 int             txp_requested;  /* Requested tx power in dBm */
1432         } ah_txpower;
1433
1434         struct ath5k_nfcal_hist ah_nfcal_hist;
1435
1436         /* average beacon RSSI in our BSS (used by ANI) */
1437         struct ewma_beacon_rssi ah_beacon_rssi_avg;
1438
1439         /* noise floor from last periodic calibration */
1440         s32                     ah_noise_floor;
1441
1442         /* Calibration timestamp */
1443         unsigned long           ah_cal_next_full;
1444         unsigned long           ah_cal_next_short;
1445         unsigned long           ah_cal_next_ani;
1446
1447         /* Calibration mask */
1448         u8                      ah_cal_mask;
1449
1450         /*
1451          * Function pointers
1452          */
1453         int (*ah_setup_tx_desc)(struct ath5k_hw *, struct ath5k_desc *,
1454                 unsigned int, unsigned int, int, enum ath5k_pkt_type,
1455                 unsigned int, unsigned int, unsigned int, unsigned int,
1456                 unsigned int, unsigned int, unsigned int, unsigned int);
1457         int (*ah_proc_tx_desc)(struct ath5k_hw *, struct ath5k_desc *,
1458                 struct ath5k_tx_status *);
1459         int (*ah_proc_rx_desc)(struct ath5k_hw *, struct ath5k_desc *,
1460                 struct ath5k_rx_status *);
1461 };
1462
1463 struct ath_bus_ops {
1464         enum ath_bus_type ath_bus_type;
1465         void (*read_cachesize)(struct ath_common *common, int *csz);
1466         bool (*eeprom_read)(struct ath_common *common, u32 off, u16 *data);
1467         int (*eeprom_read_mac)(struct ath5k_hw *ah, u8 *mac);
1468 };
1469
1470 /*
1471  * Prototypes
1472  */
1473 extern const struct ieee80211_ops ath5k_hw_ops;
1474
1475 /* Initialization and detach functions */
1476 int ath5k_hw_init(struct ath5k_hw *ah);
1477 void ath5k_hw_deinit(struct ath5k_hw *ah);
1478
1479 int ath5k_sysfs_register(struct ath5k_hw *ah);
1480 void ath5k_sysfs_unregister(struct ath5k_hw *ah);
1481
1482 /*Chip id helper functions */
1483 int ath5k_hw_read_srev(struct ath5k_hw *ah);
1484
1485 /* LED functions */
1486 int ath5k_init_leds(struct ath5k_hw *ah);
1487 void ath5k_led_enable(struct ath5k_hw *ah);
1488 void ath5k_led_off(struct ath5k_hw *ah);
1489 void ath5k_unregister_leds(struct ath5k_hw *ah);
1490
1491
1492 /* Reset Functions */
1493 int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, struct ieee80211_channel *channel);
1494 int ath5k_hw_on_hold(struct ath5k_hw *ah);
1495 int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
1496            struct ieee80211_channel *channel, bool fast, bool skip_pcu);
1497 int ath5k_hw_register_timeout(struct ath5k_hw *ah, u32 reg, u32 flag, u32 val,
1498                               bool is_set);
1499 /* Power management functions */
1500
1501
1502 /* Clock rate related functions */
1503 unsigned int ath5k_hw_htoclock(struct ath5k_hw *ah, unsigned int usec);
1504 unsigned int ath5k_hw_clocktoh(struct ath5k_hw *ah, unsigned int clock);
1505 void ath5k_hw_set_clockrate(struct ath5k_hw *ah);
1506
1507
1508 /* DMA Related Functions */
1509 void ath5k_hw_start_rx_dma(struct ath5k_hw *ah);
1510 u32 ath5k_hw_get_rxdp(struct ath5k_hw *ah);
1511 int ath5k_hw_set_rxdp(struct ath5k_hw *ah, u32 phys_addr);
1512 int ath5k_hw_start_tx_dma(struct ath5k_hw *ah, unsigned int queue);
1513 int ath5k_hw_stop_beacon_queue(struct ath5k_hw *ah, unsigned int queue);
1514 u32 ath5k_hw_get_txdp(struct ath5k_hw *ah, unsigned int queue);
1515 int ath5k_hw_set_txdp(struct ath5k_hw *ah, unsigned int queue,
1516                                 u32 phys_addr);
1517 int ath5k_hw_update_tx_triglevel(struct ath5k_hw *ah, bool increase);
1518 /* Interrupt handling */
1519 bool ath5k_hw_is_intr_pending(struct ath5k_hw *ah);
1520 int ath5k_hw_get_isr(struct ath5k_hw *ah, enum ath5k_int *interrupt_mask);
1521 enum ath5k_int ath5k_hw_set_imr(struct ath5k_hw *ah, enum ath5k_int new_mask);
1522 void ath5k_hw_update_mib_counters(struct ath5k_hw *ah);
1523 /* Init/Stop functions */
1524 void ath5k_hw_dma_init(struct ath5k_hw *ah);
1525 int ath5k_hw_dma_stop(struct ath5k_hw *ah);
1526
1527 /* EEPROM access functions */
1528 int ath5k_eeprom_init(struct ath5k_hw *ah);
1529 void ath5k_eeprom_detach(struct ath5k_hw *ah);
1530 int ath5k_eeprom_mode_from_channel(struct ath5k_hw *ah,
1531                 struct ieee80211_channel *channel);
1532
1533 /* Protocol Control Unit Functions */
1534 /* Helpers */
1535 int ath5k_hw_get_frame_duration(struct ath5k_hw *ah, enum nl80211_band band,
1536                 int len, struct ieee80211_rate *rate, bool shortpre);
1537 unsigned int ath5k_hw_get_default_slottime(struct ath5k_hw *ah);
1538 unsigned int ath5k_hw_get_default_sifs(struct ath5k_hw *ah);
1539 int ath5k_hw_set_opmode(struct ath5k_hw *ah, enum nl80211_iftype opmode);
1540 void ath5k_hw_set_coverage_class(struct ath5k_hw *ah, u8 coverage_class);
1541 /* RX filter control*/
1542 int ath5k_hw_set_lladdr(struct ath5k_hw *ah, const u8 *mac);
1543 void ath5k_hw_set_bssid(struct ath5k_hw *ah);
1544 void ath5k_hw_set_bssid_mask(struct ath5k_hw *ah, const u8 *mask);
1545 void ath5k_hw_set_mcast_filter(struct ath5k_hw *ah, u32 filter0, u32 filter1);
1546 u32 ath5k_hw_get_rx_filter(struct ath5k_hw *ah);
1547 void ath5k_hw_set_rx_filter(struct ath5k_hw *ah, u32 filter);
1548 /* Receive (DRU) start/stop functions */
1549 void ath5k_hw_start_rx_pcu(struct ath5k_hw *ah);
1550 void ath5k_hw_stop_rx_pcu(struct ath5k_hw *ah);
1551 /* Beacon control functions */
1552 u64 ath5k_hw_get_tsf64(struct ath5k_hw *ah);
1553 void ath5k_hw_set_tsf64(struct ath5k_hw *ah, u64 tsf64);
1554 void ath5k_hw_reset_tsf(struct ath5k_hw *ah);
1555 void ath5k_hw_init_beacon_timers(struct ath5k_hw *ah, u32 next_beacon,
1556                                                         u32 interval);
1557 bool ath5k_hw_check_beacon_timers(struct ath5k_hw *ah, int intval);
1558 /* Init function */
1559 void ath5k_hw_pcu_init(struct ath5k_hw *ah, enum nl80211_iftype op_mode);
1560
1561 /* Queue Control Unit, DFS Control Unit Functions */
1562 int ath5k_hw_get_tx_queueprops(struct ath5k_hw *ah, int queue,
1563                                struct ath5k_txq_info *queue_info);
1564 int ath5k_hw_set_tx_queueprops(struct ath5k_hw *ah, int queue,
1565                                const struct ath5k_txq_info *queue_info);
1566 int ath5k_hw_setup_tx_queue(struct ath5k_hw *ah,
1567                             enum ath5k_tx_queue queue_type,
1568                             struct ath5k_txq_info *queue_info);
1569 void ath5k_hw_set_tx_retry_limits(struct ath5k_hw *ah,
1570                                   unsigned int queue);
1571 u32 ath5k_hw_num_tx_pending(struct ath5k_hw *ah, unsigned int queue);
1572 void ath5k_hw_release_tx_queue(struct ath5k_hw *ah, unsigned int queue);
1573 int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue);
1574 int ath5k_hw_set_ifs_intervals(struct ath5k_hw *ah, unsigned int slot_time);
1575 /* Init function */
1576 int ath5k_hw_init_queues(struct ath5k_hw *ah);
1577
1578 /* Hardware Descriptor Functions */
1579 int ath5k_hw_init_desc_functions(struct ath5k_hw *ah);
1580 int ath5k_hw_setup_rx_desc(struct ath5k_hw *ah, struct ath5k_desc *desc,
1581                            u32 size, unsigned int flags);
1582 int ath5k_hw_setup_mrr_tx_desc(struct ath5k_hw *ah, struct ath5k_desc *desc,
1583         unsigned int tx_rate1, u_int tx_tries1, u_int tx_rate2,
1584         u_int tx_tries2, unsigned int tx_rate3, u_int tx_tries3);
1585
1586
1587 /* GPIO Functions */
1588 void ath5k_hw_set_ledstate(struct ath5k_hw *ah, unsigned int state);
1589 int ath5k_hw_set_gpio_input(struct ath5k_hw *ah, u32 gpio);
1590 int ath5k_hw_set_gpio_output(struct ath5k_hw *ah, u32 gpio);
1591 u32 ath5k_hw_get_gpio(struct ath5k_hw *ah, u32 gpio);
1592 int ath5k_hw_set_gpio(struct ath5k_hw *ah, u32 gpio, u32 val);
1593 void ath5k_hw_set_gpio_intr(struct ath5k_hw *ah, unsigned int gpio,
1594                             u32 interrupt_level);
1595
1596
1597 /* RFkill Functions */
1598 void ath5k_rfkill_hw_start(struct ath5k_hw *ah);
1599 void ath5k_rfkill_hw_stop(struct ath5k_hw *ah);
1600
1601
1602 /* Misc functions TODO: Cleanup */
1603 int ath5k_hw_set_capabilities(struct ath5k_hw *ah);
1604 int ath5k_hw_enable_pspoll(struct ath5k_hw *ah, u8 *bssid, u16 assoc_id);
1605 int ath5k_hw_disable_pspoll(struct ath5k_hw *ah);
1606
1607
1608 /* Initial register settings functions */
1609 int ath5k_hw_write_initvals(struct ath5k_hw *ah, u8 mode, bool change_channel);
1610
1611
1612 /* PHY functions */
1613 /* Misc PHY functions */
1614 u16 ath5k_hw_radio_revision(struct ath5k_hw *ah, enum nl80211_band band);
1615 int ath5k_hw_phy_disable(struct ath5k_hw *ah);
1616 /* Gain_F optimization */
1617 enum ath5k_rfgain ath5k_hw_gainf_calibrate(struct ath5k_hw *ah);
1618 int ath5k_hw_rfgain_opt_init(struct ath5k_hw *ah);
1619 /* PHY/RF channel functions */
1620 bool ath5k_channel_ok(struct ath5k_hw *ah, struct ieee80211_channel *channel);
1621 /* PHY calibration */
1622 void ath5k_hw_init_nfcal_hist(struct ath5k_hw *ah);
1623 int ath5k_hw_phy_calibrate(struct ath5k_hw *ah,
1624                            struct ieee80211_channel *channel);
1625 void ath5k_hw_update_noise_floor(struct ath5k_hw *ah);
1626 /* Spur mitigation */
1627 bool ath5k_hw_chan_has_spur_noise(struct ath5k_hw *ah,
1628                                   struct ieee80211_channel *channel);
1629 /* Antenna control */
1630 void ath5k_hw_set_antenna_mode(struct ath5k_hw *ah, u8 ant_mode);
1631 void ath5k_hw_set_antenna_switch(struct ath5k_hw *ah, u8 ee_mode);
1632 /* TX power setup */
1633 int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, u8 txpower);
1634 /* Init function */
1635 int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
1636                                 u8 mode, bool fast);
1637
1638 /*
1639  * Functions used internally
1640  */
1641
1642 static inline struct ath_common *ath5k_hw_common(struct ath5k_hw *ah)
1643 {
1644         return &ah->common;
1645 }
1646
1647 static inline struct ath_regulatory *ath5k_hw_regulatory(struct ath5k_hw *ah)
1648 {
1649         return &(ath5k_hw_common(ah)->regulatory);
1650 }
1651
1652 #ifdef CONFIG_ATH5K_AHB
1653 #define AR5K_AR2315_PCI_BASE    ((void __iomem *)0xb0100000)
1654
1655 static inline void __iomem *ath5k_ahb_reg(struct ath5k_hw *ah, u16 reg)
1656 {
1657         /* On AR2315 and AR2317 the PCI clock domain registers
1658          * are outside of the WMAC register space */
1659         if (unlikely((reg >= 0x4000) && (reg < 0x5000) &&
1660             (ah->ah_mac_srev >= AR5K_SREV_AR2315_R6)))
1661                 return AR5K_AR2315_PCI_BASE + reg;
1662
1663         return ah->iobase + reg;
1664 }
1665
1666 static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
1667 {
1668         return ioread32(ath5k_ahb_reg(ah, reg));
1669 }
1670
1671 static inline void ath5k_hw_reg_write(struct ath5k_hw *ah, u32 val, u16 reg)
1672 {
1673         iowrite32(val, ath5k_ahb_reg(ah, reg));
1674 }
1675
1676 #else
1677
1678 static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
1679 {
1680         return ioread32(ah->iobase + reg);
1681 }
1682
1683 static inline void ath5k_hw_reg_write(struct ath5k_hw *ah, u32 val, u16 reg)
1684 {
1685         iowrite32(val, ah->iobase + reg);
1686 }
1687
1688 #endif
1689
1690 static inline enum ath_bus_type ath5k_get_bus_type(struct ath5k_hw *ah)
1691 {
1692         return ath5k_hw_common(ah)->bus_ops->ath_bus_type;
1693 }
1694
1695 static inline void ath5k_read_cachesize(struct ath_common *common, int *csz)
1696 {
1697         common->bus_ops->read_cachesize(common, csz);
1698 }
1699
1700 static inline bool ath5k_hw_nvram_read(struct ath5k_hw *ah, u32 off, u16 *data)
1701 {
1702         struct ath_common *common = ath5k_hw_common(ah);
1703         return common->bus_ops->eeprom_read(common, off, data);
1704 }
1705
1706 static inline u32 ath5k_hw_bitswap(u32 val, unsigned int bits)
1707 {
1708         u32 retval = 0, bit, i;
1709
1710         for (i = 0; i < bits; i++) {
1711                 bit = (val >> i) & 1;
1712                 retval = (retval << 1) | bit;
1713         }
1714
1715         return retval;
1716 }
1717
1718 #endif