1 /*- 2 * SPDX-License-Identifier: ISC 3 * 4 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting 5 * Copyright (c) 2002-2008 Atheros Communications, Inc. 6 * 7 * Permission to use, copy, modify, and/or distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 #include "opt_ah.h" 20 21 #include "ah.h" 22 #include "ah_internal.h" 23 #include "ah_devid.h" 24 25 #include "ar5212/ar5212.h" 26 #include "ar5212/ar5212reg.h" 27 #include "ar5212/ar5212phy.h" 28 29 #include "ah_eeprom_v3.h" 30 31 /* Additional Time delay to wait after activiting the Base band */ 32 #define BASE_ACTIVATE_DELAY 100 /* 100 usec */ 33 #define PLL_SETTLE_DELAY 300 /* 300 usec */ 34 35 static HAL_BOOL ar5212SetResetReg(struct ath_hal *, uint32_t resetMask); 36 /* NB: public for 5312 use */ 37 HAL_BOOL ar5212IsSpurChannel(struct ath_hal *, 38 const struct ieee80211_channel *); 39 HAL_BOOL ar5212ChannelChange(struct ath_hal *, 40 const struct ieee80211_channel *); 41 int16_t ar5212GetNf(struct ath_hal *, struct ieee80211_channel *); 42 HAL_BOOL ar5212SetBoardValues(struct ath_hal *, 43 const struct ieee80211_channel *); 44 void ar5212SetDeltaSlope(struct ath_hal *, 45 const struct ieee80211_channel *); 46 HAL_BOOL ar5212SetTransmitPower(struct ath_hal *ah, 47 const struct ieee80211_channel *chan, uint16_t *rfXpdGain); 48 static HAL_BOOL ar5212SetRateTable(struct ath_hal *, 49 const struct ieee80211_channel *, int16_t tpcScaleReduction, 50 int16_t powerLimit, 51 HAL_BOOL commit, int16_t *minPower, int16_t *maxPower); 52 static void ar5212CorrectGainDelta(struct ath_hal *, int twiceOfdmCckDelta); 53 static void ar5212GetTargetPowers(struct ath_hal *, 54 const struct ieee80211_channel *, 55 const TRGT_POWER_INFO *pPowerInfo, uint16_t numChannels, 56 TRGT_POWER_INFO *pNewPower); 57 static uint16_t ar5212GetMaxEdgePower(uint16_t channel, 58 const RD_EDGES_POWER *pRdEdgesPower); 59 void ar5212SetRateDurationTable(struct ath_hal *, 60 const struct ieee80211_channel *); 61 void ar5212SetIFSTiming(struct ath_hal *, 62 const struct ieee80211_channel *); 63 64 /* NB: public for RF backend use */ 65 void ar5212GetLowerUpperValues(uint16_t value, 66 uint16_t *pList, uint16_t listSize, 67 uint16_t *pLowerValue, uint16_t *pUpperValue); 68 void ar5212ModifyRfBuffer(uint32_t *rfBuf, uint32_t reg32, 69 uint32_t numBits, uint32_t firstBit, uint32_t column); 70 71 static int 72 write_common(struct ath_hal *ah, const HAL_INI_ARRAY *ia, 73 HAL_BOOL bChannelChange, int writes) 74 { 75 #define IS_NO_RESET_TIMER_ADDR(x) \ 76 ( (((x) >= AR_BEACON) && ((x) <= AR_CFP_DUR)) || \ 77 (((x) >= AR_SLEEP1) && ((x) <= AR_SLEEP3))) 78 #define V(r, c) (ia)->data[((r)*(ia)->cols) + (c)] 79 int r; 80 81 /* Write Common Array Parameters */ 82 for (r = 0; r < ia->rows; r++) { 83 uint32_t reg = V(r, 0); 84 /* XXX timer/beacon setup registers? */ 85 /* On channel change, don't reset the PCU registers */ 86 if (!(bChannelChange && IS_NO_RESET_TIMER_ADDR(reg))) { 87 OS_REG_WRITE(ah, reg, V(r, 1)); 88 DMA_YIELD(writes); 89 } 90 } 91 return writes; 92 #undef IS_NO_RESET_TIMER_ADDR 93 #undef V 94 } 95 96 #define IS_DISABLE_FAST_ADC_CHAN(x) (((x) == 2462) || ((x) == 2467)) 97 98 /* 99 * XXX NDIS 5.x code had MAX_RESET_WAIT set to 2000 for AP code 100 * and 10 for Client code 101 */ 102 #define MAX_RESET_WAIT 10 103 104 #define TX_QUEUEPEND_CHECK 1 105 #define TX_ENABLE_CHECK 2 106 #define RX_ENABLE_CHECK 4 107 108 /* 109 * Places the device in and out of reset and then places sane 110 * values in the registers based on EEPROM config, initialization 111 * vectors (as determined by the mode), and station configuration 112 * 113 * bChannelChange is used to preserve DMA/PCU registers across 114 * a HW Reset during channel change. 115 */ 116 HAL_BOOL 117 ar5212Reset(struct ath_hal *ah, HAL_OPMODE opmode, 118 struct ieee80211_channel *chan, 119 HAL_BOOL bChannelChange, 120 HAL_RESET_TYPE resetType, 121 HAL_STATUS *status) 122 { 123 #define N(a) (sizeof (a) / sizeof (a[0])) 124 #define FAIL(_code) do { ecode = _code; goto bad; } while (0) 125 struct ath_hal_5212 *ahp = AH5212(ah); 126 HAL_CHANNEL_INTERNAL *ichan = AH_NULL; 127 const HAL_EEPROM *ee; 128 uint32_t softLedCfg, softLedState; 129 uint32_t saveFrameSeqCount, saveDefAntenna, saveLedState; 130 uint32_t macStaId1, synthDelay, txFrm2TxDStart; 131 uint16_t rfXpdGain[MAX_NUM_PDGAINS_PER_CHANNEL]; 132 int16_t cckOfdmPwrDelta = 0; 133 u_int modesIndex, freqIndex; 134 HAL_STATUS ecode; 135 int i, regWrites; 136 uint32_t testReg, powerVal; 137 int8_t twiceAntennaGain, twiceAntennaReduction; 138 uint32_t ackTpcPow, ctsTpcPow, chirpTpcPow; 139 HAL_BOOL isBmode = AH_FALSE; 140 141 HALASSERT(ah->ah_magic == AR5212_MAGIC); 142 ee = AH_PRIVATE(ah)->ah_eeprom; 143 144 OS_MARK(ah, AH_MARK_RESET, bChannelChange); 145 146 /* Bring out of sleep mode */ 147 if (!ar5212SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE)) { 148 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: chip did not wakeup\n", 149 __func__); 150 FAIL(HAL_EIO); 151 } 152 153 /* 154 * Map public channel to private. 155 */ 156 ichan = ath_hal_checkchannel(ah, chan); 157 if (ichan == AH_NULL) 158 FAIL(HAL_EINVAL); 159 switch (opmode) { 160 case HAL_M_STA: 161 case HAL_M_IBSS: 162 case HAL_M_HOSTAP: 163 case HAL_M_MONITOR: 164 break; 165 default: 166 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid operating mode %u\n", 167 __func__, opmode); 168 FAIL(HAL_EINVAL); 169 break; 170 } 171 HALASSERT(AH_PRIVATE(ah)->ah_eeversion >= AR_EEPROM_VER3); 172 173 SAVE_CCK(ah, chan, isBmode); 174 175 /* Preserve certain DMA hardware registers on a channel change */ 176 if (bChannelChange) { 177 /* 178 * On Venice, the TSF is almost preserved across a reset; 179 * it requires doubling writes to the RESET_TSF 180 * bit in the AR_BEACON register; it also has the quirk 181 * of the TSF going back in time on the station (station 182 * latches onto the last beacon's tsf during a reset 50% 183 * of the times); the latter is not a problem for adhoc 184 * stations since as long as the TSF is behind, it will 185 * get resynchronized on receiving the next beacon; the 186 * TSF going backwards in time could be a problem for the 187 * sleep operation (supported on infrastructure stations 188 * only) - the best and most general fix for this situation 189 * is to resynchronize the various sleep/beacon timers on 190 * the receipt of the next beacon i.e. when the TSF itself 191 * gets resynchronized to the AP's TSF - power save is 192 * needed to be temporarily disabled until that time 193 * 194 * Need to save the sequence number to restore it after 195 * the reset! 196 */ 197 saveFrameSeqCount = OS_REG_READ(ah, AR_D_SEQNUM); 198 } else 199 saveFrameSeqCount = 0; /* NB: silence compiler */ 200 201 /* Blank the channel survey statistics */ 202 ath_hal_survey_clear(ah); 203 204 #if 0 205 /* 206 * XXX disable for now; this appears to sometimes cause OFDM 207 * XXX timing error floods when ani is enabled and bg scanning 208 * XXX kicks in 209 */ 210 /* If the channel change is across the same mode - perform a fast channel change */ 211 if (IS_2413(ah) || IS_5413(ah)) { 212 /* 213 * Fast channel change can only be used when: 214 * -channel change requested - so it's not the initial reset. 215 * -it's not a change to the current channel - 216 * often called when switching modes on a channel 217 * -the modes of the previous and requested channel are the 218 * same 219 * XXX opmode shouldn't change either? 220 */ 221 if (bChannelChange && 222 (AH_PRIVATE(ah)->ah_curchan != AH_NULL) && 223 (chan->ic_freq != AH_PRIVATE(ah)->ah_curchan->ic_freq) && 224 ((chan->ic_flags & IEEE80211_CHAN_ALLTURBO) == 225 (AH_PRIVATE(ah)->ah_curchan->ic_flags & IEEE80211_CHAN_ALLTURBO))) { 226 if (ar5212ChannelChange(ah, chan)) { 227 /* If ChannelChange completed - skip the rest of reset */ 228 /* XXX ani? */ 229 goto done; 230 } 231 } 232 } 233 #endif 234 /* 235 * Preserve the antenna on a channel change 236 */ 237 saveDefAntenna = OS_REG_READ(ah, AR_DEF_ANTENNA); 238 if (saveDefAntenna == 0) /* XXX magic constants */ 239 saveDefAntenna = 1; 240 241 /* Save hardware flag before chip reset clears the register */ 242 macStaId1 = OS_REG_READ(ah, AR_STA_ID1) & 243 (AR_STA_ID1_BASE_RATE_11B | AR_STA_ID1_USE_DEFANT); 244 245 /* Save led state from pci config register */ 246 saveLedState = OS_REG_READ(ah, AR_PCICFG) & 247 (AR_PCICFG_LEDCTL | AR_PCICFG_LEDMODE | AR_PCICFG_LEDBLINK | 248 AR_PCICFG_LEDSLOW); 249 softLedCfg = OS_REG_READ(ah, AR_GPIOCR); 250 softLedState = OS_REG_READ(ah, AR_GPIODO); 251 252 ar5212RestoreClock(ah, opmode); /* move to refclk operation */ 253 254 /* 255 * Adjust gain parameters before reset if 256 * there's an outstanding gain updated. 257 */ 258 (void) ar5212GetRfgain(ah); 259 260 if (!ar5212ChipReset(ah, chan)) { 261 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: chip reset failed\n", __func__); 262 FAIL(HAL_EIO); 263 } 264 265 /* Setup the indices for the next set of register array writes */ 266 if (IEEE80211_IS_CHAN_2GHZ(chan)) { 267 freqIndex = 2; 268 if (IEEE80211_IS_CHAN_108G(chan)) 269 modesIndex = 5; 270 else if (IEEE80211_IS_CHAN_G(chan)) 271 modesIndex = 4; 272 else if (IEEE80211_IS_CHAN_B(chan)) 273 modesIndex = 3; 274 else { 275 HALDEBUG(ah, HAL_DEBUG_ANY, 276 "%s: invalid channel %u/0x%x\n", 277 __func__, chan->ic_freq, chan->ic_flags); 278 FAIL(HAL_EINVAL); 279 } 280 } else { 281 freqIndex = 1; 282 if (IEEE80211_IS_CHAN_TURBO(chan)) 283 modesIndex = 2; 284 else if (IEEE80211_IS_CHAN_A(chan)) 285 modesIndex = 1; 286 else { 287 HALDEBUG(ah, HAL_DEBUG_ANY, 288 "%s: invalid channel %u/0x%x\n", 289 __func__, chan->ic_freq, chan->ic_flags); 290 FAIL(HAL_EINVAL); 291 } 292 } 293 294 OS_MARK(ah, AH_MARK_RESET_LINE, __LINE__); 295 296 /* Set correct Baseband to analog shift setting to access analog chips. */ 297 OS_REG_WRITE(ah, AR_PHY(0), 0x00000007); 298 299 regWrites = ath_hal_ini_write(ah, &ahp->ah_ini_modes, modesIndex, 0); 300 regWrites = write_common(ah, &ahp->ah_ini_common, bChannelChange, 301 regWrites); 302 #ifdef AH_RXCFG_SDMAMW_4BYTES 303 /* 304 * Nala doesn't work with 128 byte bursts on pb42(hydra) (ar71xx), 305 * use 4 instead. Enabling it on all platforms would hurt performance, 306 * so we only enable it on the ones that are affected by it. 307 */ 308 OS_REG_WRITE(ah, AR_RXCFG, 0); 309 #endif 310 ahp->ah_rfHal->writeRegs(ah, modesIndex, freqIndex, regWrites); 311 312 OS_MARK(ah, AH_MARK_RESET_LINE, __LINE__); 313 314 if (IEEE80211_IS_CHAN_HALF(chan) || IEEE80211_IS_CHAN_QUARTER(chan)) { 315 ar5212SetIFSTiming(ah, chan); 316 if (IS_5413(ah)) { 317 /* 318 * Force window_length for 1/2 and 1/4 rate channels, 319 * the ini file sets this to zero otherwise. 320 */ 321 OS_REG_RMW_FIELD(ah, AR_PHY_FRAME_CTL, 322 AR_PHY_FRAME_CTL_WINLEN, 3); 323 } 324 } 325 326 /* Overwrite INI values for revised chipsets */ 327 if (AH_PRIVATE(ah)->ah_phyRev >= AR_PHY_CHIP_ID_REV_2) { 328 /* ADC_CTL */ 329 OS_REG_WRITE(ah, AR_PHY_ADC_CTL, 330 SM(2, AR_PHY_ADC_CTL_OFF_INBUFGAIN) | 331 SM(2, AR_PHY_ADC_CTL_ON_INBUFGAIN) | 332 AR_PHY_ADC_CTL_OFF_PWDDAC | 333 AR_PHY_ADC_CTL_OFF_PWDADC); 334 335 /* TX_PWR_ADJ */ 336 if (ichan->channel == 2484) { 337 cckOfdmPwrDelta = SCALE_OC_DELTA( 338 ee->ee_cckOfdmPwrDelta - 339 ee->ee_scaledCh14FilterCckDelta); 340 } else { 341 cckOfdmPwrDelta = SCALE_OC_DELTA( 342 ee->ee_cckOfdmPwrDelta); 343 } 344 345 if (IEEE80211_IS_CHAN_G(chan)) { 346 OS_REG_WRITE(ah, AR_PHY_TXPWRADJ, 347 SM((ee->ee_cckOfdmPwrDelta*-1), 348 AR_PHY_TXPWRADJ_CCK_GAIN_DELTA) | 349 SM((cckOfdmPwrDelta*-1), 350 AR_PHY_TXPWRADJ_CCK_PCDAC_INDEX)); 351 } else { 352 OS_REG_WRITE(ah, AR_PHY_TXPWRADJ, 0); 353 } 354 355 /* Add barker RSSI thresh enable as disabled */ 356 OS_REG_CLR_BIT(ah, AR_PHY_DAG_CTRLCCK, 357 AR_PHY_DAG_CTRLCCK_EN_RSSI_THR); 358 OS_REG_RMW_FIELD(ah, AR_PHY_DAG_CTRLCCK, 359 AR_PHY_DAG_CTRLCCK_RSSI_THR, 2); 360 361 /* Set the mute mask to the correct default */ 362 OS_REG_WRITE(ah, AR_SEQ_MASK, 0x0000000F); 363 } 364 365 if (AH_PRIVATE(ah)->ah_phyRev >= AR_PHY_CHIP_ID_REV_3) { 366 /* Clear reg to alllow RX_CLEAR line debug */ 367 OS_REG_WRITE(ah, AR_PHY_BLUETOOTH, 0); 368 } 369 if (AH_PRIVATE(ah)->ah_phyRev >= AR_PHY_CHIP_ID_REV_4) { 370 #ifdef notyet 371 /* Enable burst prefetch for the data queues */ 372 OS_REG_RMW_FIELD(ah, AR_D_FPCTL, ... ); 373 /* Enable double-buffering */ 374 OS_REG_CLR_BIT(ah, AR_TXCFG, AR_TXCFG_DBL_BUF_DIS); 375 #endif 376 } 377 378 /* Set ADC/DAC select values */ 379 OS_REG_WRITE(ah, AR_PHY_SLEEP_SCAL, 0x0e); 380 381 if (IS_5413(ah) || IS_2417(ah)) { 382 uint32_t newReg = 1; 383 if (IS_DISABLE_FAST_ADC_CHAN(ichan->channel)) 384 newReg = 0; 385 /* As it's a clock changing register, only write when the value needs to be changed */ 386 if (OS_REG_READ(ah, AR_PHY_FAST_ADC) != newReg) 387 OS_REG_WRITE(ah, AR_PHY_FAST_ADC, newReg); 388 } 389 390 /* Setup the transmit power values. */ 391 if (!ar5212SetTransmitPower(ah, chan, rfXpdGain)) { 392 HALDEBUG(ah, HAL_DEBUG_ANY, 393 "%s: error init'ing transmit power\n", __func__); 394 FAIL(HAL_EIO); 395 } 396 397 /* Write the analog registers */ 398 if (!ahp->ah_rfHal->setRfRegs(ah, chan, modesIndex, rfXpdGain)) { 399 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: ar5212SetRfRegs failed\n", 400 __func__); 401 FAIL(HAL_EIO); 402 } 403 404 /* Write delta slope for OFDM enabled modes (A, G, Turbo) */ 405 if (IEEE80211_IS_CHAN_OFDM(chan)) { 406 if (IS_5413(ah) || 407 AH_PRIVATE(ah)->ah_eeversion >= AR_EEPROM_VER5_3) 408 ar5212SetSpurMitigation(ah, chan); 409 ar5212SetDeltaSlope(ah, chan); 410 } 411 412 /* Setup board specific options for EEPROM version 3 */ 413 if (!ar5212SetBoardValues(ah, chan)) { 414 HALDEBUG(ah, HAL_DEBUG_ANY, 415 "%s: error setting board options\n", __func__); 416 FAIL(HAL_EIO); 417 } 418 419 /* Restore certain DMA hardware registers on a channel change */ 420 if (bChannelChange) 421 OS_REG_WRITE(ah, AR_D_SEQNUM, saveFrameSeqCount); 422 423 OS_MARK(ah, AH_MARK_RESET_LINE, __LINE__); 424 425 OS_REG_WRITE(ah, AR_STA_ID0, LE_READ_4(ahp->ah_macaddr)); 426 OS_REG_WRITE(ah, AR_STA_ID1, LE_READ_2(ahp->ah_macaddr + 4) 427 | macStaId1 428 | AR_STA_ID1_RTS_USE_DEF 429 | ahp->ah_staId1Defaults 430 ); 431 ar5212SetOperatingMode(ah, opmode); 432 433 /* Set Venice BSSID mask according to current state */ 434 OS_REG_WRITE(ah, AR_BSSMSKL, LE_READ_4(ahp->ah_bssidmask)); 435 OS_REG_WRITE(ah, AR_BSSMSKU, LE_READ_2(ahp->ah_bssidmask + 4)); 436 437 /* Restore previous led state */ 438 OS_REG_WRITE(ah, AR_PCICFG, OS_REG_READ(ah, AR_PCICFG) | saveLedState); 439 440 /* Restore soft Led state to GPIO */ 441 OS_REG_WRITE(ah, AR_GPIOCR, softLedCfg); 442 OS_REG_WRITE(ah, AR_GPIODO, softLedState); 443 444 /* Restore previous antenna */ 445 OS_REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna); 446 447 /* then our BSSID and associate id */ 448 OS_REG_WRITE(ah, AR_BSS_ID0, LE_READ_4(ahp->ah_bssid)); 449 OS_REG_WRITE(ah, AR_BSS_ID1, LE_READ_2(ahp->ah_bssid + 4) | 450 (ahp->ah_assocId & 0x3fff) << AR_BSS_ID1_AID_S); 451 452 /* Restore bmiss rssi & count thresholds */ 453 OS_REG_WRITE(ah, AR_RSSI_THR, ahp->ah_rssiThr); 454 455 OS_REG_WRITE(ah, AR_ISR, ~0); /* cleared on write */ 456 457 if (!ar5212SetChannel(ah, chan)) 458 FAIL(HAL_EIO); 459 460 OS_MARK(ah, AH_MARK_RESET_LINE, __LINE__); 461 462 ar5212SetCoverageClass(ah, AH_PRIVATE(ah)->ah_coverageClass, 1); 463 464 ar5212SetRateDurationTable(ah, chan); 465 466 /* Set Tx frame start to tx data start delay */ 467 if (IS_RAD5112_ANY(ah) && 468 (IEEE80211_IS_CHAN_HALF(chan) || IEEE80211_IS_CHAN_QUARTER(chan))) { 469 txFrm2TxDStart = 470 IEEE80211_IS_CHAN_HALF(chan) ? 471 TX_FRAME_D_START_HALF_RATE: 472 TX_FRAME_D_START_QUARTER_RATE; 473 OS_REG_RMW_FIELD(ah, AR_PHY_TX_CTL, 474 AR_PHY_TX_FRAME_TO_TX_DATA_START, txFrm2TxDStart); 475 } 476 477 /* 478 * Setup fast diversity. 479 * Fast diversity can be enabled or disabled via regadd.txt. 480 * Default is enabled. 481 * For reference, 482 * Disable: reg val 483 * 0x00009860 0x00009d18 (if 11a / 11g, else no change) 484 * 0x00009970 0x192bb514 485 * 0x0000a208 0xd03e4648 486 * 487 * Enable: 0x00009860 0x00009d10 (if 11a / 11g, else no change) 488 * 0x00009970 0x192fb514 489 * 0x0000a208 0xd03e6788 490 */ 491 492 /* XXX Setup pre PHY ENABLE EAR additions */ 493 /* 494 * Wait for the frequency synth to settle (synth goes on 495 * via AR_PHY_ACTIVE_EN). Read the phy active delay register. 496 * Value is in 100ns increments. 497 */ 498 synthDelay = OS_REG_READ(ah, AR_PHY_RX_DELAY) & AR_PHY_RX_DELAY_DELAY; 499 if (IEEE80211_IS_CHAN_B(chan)) { 500 synthDelay = (4 * synthDelay) / 22; 501 } else { 502 synthDelay /= 10; 503 } 504 505 /* Activate the PHY (includes baseband activate and synthesizer on) */ 506 OS_REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN); 507 508 /* 509 * There is an issue if the AP starts the calibration before 510 * the base band timeout completes. This could result in the 511 * rx_clear false triggering. As a workaround we add delay an 512 * extra BASE_ACTIVATE_DELAY usecs to ensure this condition 513 * does not happen. 514 */ 515 if (IEEE80211_IS_CHAN_HALF(chan)) { 516 OS_DELAY((synthDelay << 1) + BASE_ACTIVATE_DELAY); 517 } else if (IEEE80211_IS_CHAN_QUARTER(chan)) { 518 OS_DELAY((synthDelay << 2) + BASE_ACTIVATE_DELAY); 519 } else { 520 OS_DELAY(synthDelay + BASE_ACTIVATE_DELAY); 521 } 522 523 /* 524 * The udelay method is not reliable with notebooks. 525 * Need to check to see if the baseband is ready 526 */ 527 testReg = OS_REG_READ(ah, AR_PHY_TESTCTRL); 528 /* Selects the Tx hold */ 529 OS_REG_WRITE(ah, AR_PHY_TESTCTRL, AR_PHY_TESTCTRL_TXHOLD); 530 i = 0; 531 while ((i++ < 20) && 532 (OS_REG_READ(ah, 0x9c24) & 0x10)) /* test if baseband not ready */ OS_DELAY(200); 533 OS_REG_WRITE(ah, AR_PHY_TESTCTRL, testReg); 534 535 /* Calibrate the AGC and start a NF calculation */ 536 OS_REG_WRITE(ah, AR_PHY_AGC_CONTROL, 537 OS_REG_READ(ah, AR_PHY_AGC_CONTROL) 538 | AR_PHY_AGC_CONTROL_CAL 539 | AR_PHY_AGC_CONTROL_NF); 540 541 if (!IEEE80211_IS_CHAN_B(chan) && ahp->ah_bIQCalibration != IQ_CAL_DONE) { 542 /* Start IQ calibration w/ 2^(INIT_IQCAL_LOG_COUNT_MAX+1) samples */ 543 OS_REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4, 544 AR_PHY_TIMING_CTRL4_IQCAL_LOG_COUNT_MAX, 545 INIT_IQCAL_LOG_COUNT_MAX); 546 OS_REG_SET_BIT(ah, AR_PHY_TIMING_CTRL4, 547 AR_PHY_TIMING_CTRL4_DO_IQCAL); 548 ahp->ah_bIQCalibration = IQ_CAL_RUNNING; 549 } else 550 ahp->ah_bIQCalibration = IQ_CAL_INACTIVE; 551 552 /* Setup compression registers */ 553 ar5212SetCompRegs(ah); 554 555 /* Set 1:1 QCU to DCU mapping for all queues */ 556 for (i = 0; i < AR_NUM_DCU; i++) 557 OS_REG_WRITE(ah, AR_DQCUMASK(i), 1 << i); 558 559 ahp->ah_intrTxqs = 0; 560 for (i = 0; i < AH_PRIVATE(ah)->ah_caps.halTotalQueues; i++) 561 ar5212ResetTxQueue(ah, i); 562 563 /* 564 * Setup interrupt handling. Note that ar5212ResetTxQueue 565 * manipulates the secondary IMR's as queues are enabled 566 * and disabled. This is done with RMW ops to insure the 567 * settings we make here are preserved. 568 */ 569 ahp->ah_maskReg = AR_IMR_TXOK | AR_IMR_TXERR | AR_IMR_TXURN 570 | AR_IMR_RXOK | AR_IMR_RXERR | AR_IMR_RXORN 571 | AR_IMR_HIUERR 572 ; 573 if (opmode == HAL_M_HOSTAP) 574 ahp->ah_maskReg |= AR_IMR_MIB; 575 OS_REG_WRITE(ah, AR_IMR, ahp->ah_maskReg); 576 /* Enable bus errors that are OR'd to set the HIUERR bit */ 577 OS_REG_WRITE(ah, AR_IMR_S2, 578 OS_REG_READ(ah, AR_IMR_S2) 579 | AR_IMR_S2_MCABT | AR_IMR_S2_SSERR | AR_IMR_S2_DPERR); 580 581 if (AH_PRIVATE(ah)->ah_rfkillEnabled) 582 ar5212EnableRfKill(ah); 583 584 if (!ath_hal_wait(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL, 0)) { 585 HALDEBUG(ah, HAL_DEBUG_ANY, 586 "%s: offset calibration failed to complete in 1ms;" 587 " noisy environment?\n", __func__); 588 } 589 590 /* 591 * Set clocks back to 32kHz if they had been using refClk, then 592 * use an external 32kHz crystal when sleeping, if one exists. 593 */ 594 ar5212SetupClock(ah, opmode); 595 596 /* 597 * Writing to AR_BEACON will start timers. Hence it should 598 * be the last register to be written. Do not reset tsf, do 599 * not enable beacons at this point, but preserve other values 600 * like beaconInterval. 601 */ 602 OS_REG_WRITE(ah, AR_BEACON, 603 (OS_REG_READ(ah, AR_BEACON) &~ (AR_BEACON_EN | AR_BEACON_RESET_TSF))); 604 605 /* XXX Setup post reset EAR additions */ 606 607 /* QoS support */ 608 if (AH_PRIVATE(ah)->ah_macVersion > AR_SREV_VERSION_VENICE || 609 (AH_PRIVATE(ah)->ah_macVersion == AR_SREV_VERSION_VENICE && 610 AH_PRIVATE(ah)->ah_macRev >= AR_SREV_GRIFFIN_LITE)) { 611 OS_REG_WRITE(ah, AR_QOS_CONTROL, 0x100aa); /* XXX magic */ 612 OS_REG_WRITE(ah, AR_QOS_SELECT, 0x3210); /* XXX magic */ 613 } 614 615 /* Turn on NOACK Support for QoS packets */ 616 OS_REG_WRITE(ah, AR_NOACK, 617 SM(2, AR_NOACK_2BIT_VALUE) | 618 SM(5, AR_NOACK_BIT_OFFSET) | 619 SM(0, AR_NOACK_BYTE_OFFSET)); 620 621 /* Get Antenna Gain reduction */ 622 if (IEEE80211_IS_CHAN_5GHZ(chan)) { 623 ath_hal_eepromGet(ah, AR_EEP_ANTGAINMAX_5, &twiceAntennaGain); 624 } else { 625 ath_hal_eepromGet(ah, AR_EEP_ANTGAINMAX_2, &twiceAntennaGain); 626 } 627 twiceAntennaReduction = 628 ath_hal_getantennareduction(ah, chan, twiceAntennaGain); 629 630 /* TPC for self-generated frames */ 631 632 ackTpcPow = MS(ahp->ah_macTPC, AR_TPC_ACK); 633 if ((ackTpcPow-ahp->ah_txPowerIndexOffset) > chan->ic_maxpower) 634 ackTpcPow = chan->ic_maxpower+ahp->ah_txPowerIndexOffset; 635 636 if (ackTpcPow > (2*chan->ic_maxregpower - twiceAntennaReduction)) 637 ackTpcPow = (2*chan->ic_maxregpower - twiceAntennaReduction) 638 + ahp->ah_txPowerIndexOffset; 639 640 ctsTpcPow = MS(ahp->ah_macTPC, AR_TPC_CTS); 641 if ((ctsTpcPow-ahp->ah_txPowerIndexOffset) > chan->ic_maxpower) 642 ctsTpcPow = chan->ic_maxpower+ahp->ah_txPowerIndexOffset; 643 644 if (ctsTpcPow > (2*chan->ic_maxregpower - twiceAntennaReduction)) 645 ctsTpcPow = (2*chan->ic_maxregpower - twiceAntennaReduction) 646 + ahp->ah_txPowerIndexOffset; 647 648 chirpTpcPow = MS(ahp->ah_macTPC, AR_TPC_CHIRP); 649 if ((chirpTpcPow-ahp->ah_txPowerIndexOffset) > chan->ic_maxpower) 650 chirpTpcPow = chan->ic_maxpower+ahp->ah_txPowerIndexOffset; 651 652 if (chirpTpcPow > (2*chan->ic_maxregpower - twiceAntennaReduction)) 653 chirpTpcPow = (2*chan->ic_maxregpower - twiceAntennaReduction) 654 + ahp->ah_txPowerIndexOffset; 655 656 if (ackTpcPow > 63) 657 ackTpcPow = 63; 658 if (ctsTpcPow > 63) 659 ctsTpcPow = 63; 660 if (chirpTpcPow > 63) 661 chirpTpcPow = 63; 662 663 powerVal = SM(ackTpcPow, AR_TPC_ACK) | 664 SM(ctsTpcPow, AR_TPC_CTS) | 665 SM(chirpTpcPow, AR_TPC_CHIRP); 666 667 OS_REG_WRITE(ah, AR_TPC, powerVal); 668 669 /* Restore user-specified settings */ 670 if (ahp->ah_miscMode != 0) 671 OS_REG_WRITE(ah, AR_MISC_MODE, ahp->ah_miscMode); 672 if (ahp->ah_sifstime != (u_int) -1) 673 ar5212SetSifsTime(ah, ahp->ah_sifstime); 674 if (ahp->ah_slottime != (u_int) -1) 675 ar5212SetSlotTime(ah, ahp->ah_slottime); 676 if (ahp->ah_acktimeout != (u_int) -1) 677 ar5212SetAckTimeout(ah, ahp->ah_acktimeout); 678 if (ahp->ah_ctstimeout != (u_int) -1) 679 ar5212SetCTSTimeout(ah, ahp->ah_ctstimeout); 680 if (AH_PRIVATE(ah)->ah_diagreg != 0) 681 OS_REG_WRITE(ah, AR_DIAG_SW, AH_PRIVATE(ah)->ah_diagreg); 682 683 AH_PRIVATE(ah)->ah_opmode = opmode; /* record operating mode */ 684 #if 0 685 done: 686 #endif 687 if (bChannelChange && !IEEE80211_IS_CHAN_DFS(chan)) 688 chan->ic_state &= ~IEEE80211_CHANSTATE_CWINT; 689 690 HALDEBUG(ah, HAL_DEBUG_RESET, "%s: done\n", __func__); 691 692 RESTORE_CCK(ah, chan, isBmode); 693 694 OS_MARK(ah, AH_MARK_RESET_DONE, 0); 695 696 return AH_TRUE; 697 bad: 698 RESTORE_CCK(ah, chan, isBmode); 699 700 OS_MARK(ah, AH_MARK_RESET_DONE, ecode); 701 if (status != AH_NULL) 702 *status = ecode; 703 return AH_FALSE; 704 #undef FAIL 705 #undef N 706 } 707 708 /* 709 * Call the rf backend to change the channel. 710 */ 711 HAL_BOOL 712 ar5212SetChannel(struct ath_hal *ah, const struct ieee80211_channel *chan) 713 { 714 struct ath_hal_5212 *ahp = AH5212(ah); 715 716 /* Change the synth */ 717 if (!ahp->ah_rfHal->setChannel(ah, chan)) 718 return AH_FALSE; 719 return AH_TRUE; 720 } 721 722 /* 723 * This channel change evaluates whether the selected hardware can 724 * perform a synthesizer-only channel change (no reset). If the 725 * TX is not stopped, or the RFBus cannot be granted in the given 726 * time, the function returns false as a reset is necessary 727 */ 728 HAL_BOOL 729 ar5212ChannelChange(struct ath_hal *ah, const struct ieee80211_channel *chan) 730 { 731 uint32_t ulCount; 732 uint32_t data, synthDelay, qnum; 733 uint16_t rfXpdGain[MAX_NUM_PDGAINS_PER_CHANNEL]; 734 HAL_BOOL txStopped = AH_TRUE; 735 HAL_CHANNEL_INTERNAL *ichan; 736 737 /* 738 * Map public channel to private. 739 */ 740 ichan = ath_hal_checkchannel(ah, chan); 741 742 /* TX must be stopped or RF Bus grant will not work */ 743 for (qnum = 0; qnum < AH_PRIVATE(ah)->ah_caps.halTotalQueues; qnum++) { 744 if (ar5212NumTxPending(ah, qnum)) { 745 txStopped = AH_FALSE; 746 break; 747 } 748 } 749 if (!txStopped) 750 return AH_FALSE; 751 752 /* Kill last Baseband Rx Frame */ 753 OS_REG_WRITE(ah, AR_PHY_RFBUS_REQ, AR_PHY_RFBUS_REQ_REQUEST); /* Request analog bus grant */ 754 for (ulCount = 0; ulCount < 100; ulCount++) { 755 if (OS_REG_READ(ah, AR_PHY_RFBUS_GNT)) 756 break; 757 OS_DELAY(5); 758 } 759 if (ulCount >= 100) 760 return AH_FALSE; 761 762 /* Change the synth */ 763 if (!ar5212SetChannel(ah, chan)) 764 return AH_FALSE; 765 766 /* 767 * Wait for the frequency synth to settle (synth goes on via PHY_ACTIVE_EN). 768 * Read the phy active delay register. Value is in 100ns increments. 769 */ 770 data = OS_REG_READ(ah, AR_PHY_RX_DELAY) & AR_PHY_RX_DELAY_DELAY; 771 if (IEEE80211_IS_CHAN_B(chan)) { 772 synthDelay = (4 * data) / 22; 773 } else { 774 synthDelay = data / 10; 775 } 776 OS_DELAY(synthDelay + BASE_ACTIVATE_DELAY); 777 778 /* Setup the transmit power values. */ 779 if (!ar5212SetTransmitPower(ah, chan, rfXpdGain)) { 780 HALDEBUG(ah, HAL_DEBUG_ANY, 781 "%s: error init'ing transmit power\n", __func__); 782 return AH_FALSE; 783 } 784 785 /* Write delta slope for OFDM enabled modes (A, G, Turbo) */ 786 if (IEEE80211_IS_CHAN_OFDM(chan)) { 787 if (IS_5413(ah) || 788 AH_PRIVATE(ah)->ah_eeversion >= AR_EEPROM_VER5_3) 789 ar5212SetSpurMitigation(ah, chan); 790 ar5212SetDeltaSlope(ah, chan); 791 } 792 793 /* Release the RFBus Grant */ 794 OS_REG_WRITE(ah, AR_PHY_RFBUS_REQ, 0); 795 796 /* Start Noise Floor Cal */ 797 OS_REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF); 798 return AH_TRUE; 799 } 800 801 void 802 ar5212SetOperatingMode(struct ath_hal *ah, int opmode) 803 { 804 uint32_t val; 805 806 val = OS_REG_READ(ah, AR_STA_ID1); 807 val &= ~(AR_STA_ID1_STA_AP | AR_STA_ID1_ADHOC); 808 switch (opmode) { 809 case HAL_M_HOSTAP: 810 OS_REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_STA_AP 811 | AR_STA_ID1_KSRCH_MODE); 812 OS_REG_CLR_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION); 813 break; 814 case HAL_M_IBSS: 815 OS_REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_ADHOC 816 | AR_STA_ID1_KSRCH_MODE); 817 OS_REG_SET_BIT(ah, AR_CFG, AR_CFG_AP_ADHOC_INDICATION); 818 break; 819 case HAL_M_STA: 820 case HAL_M_MONITOR: 821 OS_REG_WRITE(ah, AR_STA_ID1, val | AR_STA_ID1_KSRCH_MODE); 822 break; 823 } 824 } 825 826 /* 827 * Places the PHY and Radio chips into reset. A full reset 828 * must be called to leave this state. The PCI/MAC/PCU are 829 * not placed into reset as we must receive interrupt to 830 * re-enable the hardware. 831 */ 832 HAL_BOOL 833 ar5212PhyDisable(struct ath_hal *ah) 834 { 835 return ar5212SetResetReg(ah, AR_RC_BB); 836 } 837 838 /* 839 * Places all of hardware into reset 840 */ 841 HAL_BOOL 842 ar5212Disable(struct ath_hal *ah) 843 { 844 if (!ar5212SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE)) 845 return AH_FALSE; 846 /* 847 * Reset the HW - PCI must be reset after the rest of the 848 * device has been reset. 849 */ 850 return ar5212SetResetReg(ah, AR_RC_MAC | AR_RC_BB | AR_RC_PCI); 851 } 852 853 /* 854 * Places the hardware into reset and then pulls it out of reset 855 * 856 * TODO: Only write the PLL if we're changing to or from CCK mode 857 * 858 * WARNING: The order of the PLL and mode registers must be correct. 859 */ 860 HAL_BOOL 861 ar5212ChipReset(struct ath_hal *ah, const struct ieee80211_channel *chan) 862 { 863 864 OS_MARK(ah, AH_MARK_CHIPRESET, chan ? chan->ic_freq : 0); 865 866 /* 867 * Reset the HW - PCI must be reset after the rest of the 868 * device has been reset 869 */ 870 if (!ar5212SetResetReg(ah, AR_RC_MAC | AR_RC_BB | AR_RC_PCI)) 871 return AH_FALSE; 872 873 /* Bring out of sleep mode (AGAIN) */ 874 if (!ar5212SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE)) 875 return AH_FALSE; 876 877 /* Clear warm reset register */ 878 if (!ar5212SetResetReg(ah, 0)) 879 return AH_FALSE; 880 881 /* 882 * Perform warm reset before the mode/PLL/turbo registers 883 * are changed in order to deactivate the radio. Mode changes 884 * with an active radio can result in corrupted shifts to the 885 * radio device. 886 */ 887 888 /* 889 * Set CCK and Turbo modes correctly. 890 */ 891 if (chan != AH_NULL) { /* NB: can be null during attach */ 892 uint32_t rfMode, phyPLL = 0, curPhyPLL, turbo; 893 894 if (IS_5413(ah)) { /* NB: =>'s 5424 also */ 895 rfMode = AR_PHY_MODE_AR5112; 896 if (IEEE80211_IS_CHAN_HALF(chan)) 897 rfMode |= AR_PHY_MODE_HALF; 898 else if (IEEE80211_IS_CHAN_QUARTER(chan)) 899 rfMode |= AR_PHY_MODE_QUARTER; 900 901 if (IEEE80211_IS_CHAN_CCK(chan)) 902 phyPLL = AR_PHY_PLL_CTL_44_5112; 903 else 904 phyPLL = AR_PHY_PLL_CTL_40_5413; 905 } else if (IS_RAD5111(ah)) { 906 rfMode = AR_PHY_MODE_AR5111; 907 if (IEEE80211_IS_CHAN_CCK(chan)) 908 phyPLL = AR_PHY_PLL_CTL_44; 909 else 910 phyPLL = AR_PHY_PLL_CTL_40; 911 if (IEEE80211_IS_CHAN_HALF(chan)) 912 phyPLL = AR_PHY_PLL_CTL_HALF; 913 else if (IEEE80211_IS_CHAN_QUARTER(chan)) 914 phyPLL = AR_PHY_PLL_CTL_QUARTER; 915 } else { /* 5112, 2413, 2316, 2317 */ 916 rfMode = AR_PHY_MODE_AR5112; 917 if (IEEE80211_IS_CHAN_CCK(chan)) 918 phyPLL = AR_PHY_PLL_CTL_44_5112; 919 else 920 phyPLL = AR_PHY_PLL_CTL_40_5112; 921 if (IEEE80211_IS_CHAN_HALF(chan)) 922 phyPLL |= AR_PHY_PLL_CTL_HALF; 923 else if (IEEE80211_IS_CHAN_QUARTER(chan)) 924 phyPLL |= AR_PHY_PLL_CTL_QUARTER; 925 } 926 if (IEEE80211_IS_CHAN_G(chan)) 927 rfMode |= AR_PHY_MODE_DYNAMIC; 928 else if (IEEE80211_IS_CHAN_OFDM(chan)) 929 rfMode |= AR_PHY_MODE_OFDM; 930 else 931 rfMode |= AR_PHY_MODE_CCK; 932 if (IEEE80211_IS_CHAN_5GHZ(chan)) 933 rfMode |= AR_PHY_MODE_RF5GHZ; 934 else 935 rfMode |= AR_PHY_MODE_RF2GHZ; 936 turbo = IEEE80211_IS_CHAN_TURBO(chan) ? 937 (AR_PHY_FC_TURBO_MODE | AR_PHY_FC_TURBO_SHORT) : 0; 938 curPhyPLL = OS_REG_READ(ah, AR_PHY_PLL_CTL); 939 /* 940 * PLL, Mode, and Turbo values must be written in the correct 941 * order to ensure: 942 * - The PLL cannot be set to 44 unless the CCK or DYNAMIC 943 * mode bit is set 944 * - Turbo cannot be set at the same time as CCK or DYNAMIC 945 */ 946 if (IEEE80211_IS_CHAN_CCK(chan)) { 947 OS_REG_WRITE(ah, AR_PHY_TURBO, turbo); 948 OS_REG_WRITE(ah, AR_PHY_MODE, rfMode); 949 if (curPhyPLL != phyPLL) { 950 OS_REG_WRITE(ah, AR_PHY_PLL_CTL, phyPLL); 951 /* Wait for the PLL to settle */ 952 OS_DELAY(PLL_SETTLE_DELAY); 953 } 954 } else { 955 if (curPhyPLL != phyPLL) { 956 OS_REG_WRITE(ah, AR_PHY_PLL_CTL, phyPLL); 957 /* Wait for the PLL to settle */ 958 OS_DELAY(PLL_SETTLE_DELAY); 959 } 960 OS_REG_WRITE(ah, AR_PHY_TURBO, turbo); 961 OS_REG_WRITE(ah, AR_PHY_MODE, rfMode); 962 } 963 } 964 return AH_TRUE; 965 } 966 967 /* 968 * Recalibrate the lower PHY chips to account for temperature/environment 969 * changes. 970 */ 971 HAL_BOOL 972 ar5212PerCalibrationN(struct ath_hal *ah, 973 struct ieee80211_channel *chan, 974 u_int chainMask, HAL_BOOL longCal, HAL_BOOL *isCalDone) 975 { 976 #define IQ_CAL_TRIES 10 977 struct ath_hal_5212 *ahp = AH5212(ah); 978 HAL_CHANNEL_INTERNAL *ichan; 979 int32_t qCoff, qCoffDenom; 980 int32_t iqCorrMeas, iCoff, iCoffDenom; 981 uint32_t powerMeasQ, powerMeasI; 982 HAL_BOOL isBmode = AH_FALSE; 983 984 OS_MARK(ah, AH_MARK_PERCAL, chan->ic_freq); 985 *isCalDone = AH_FALSE; 986 ichan = ath_hal_checkchannel(ah, chan); 987 if (ichan == AH_NULL) { 988 HALDEBUG(ah, HAL_DEBUG_ANY, 989 "%s: invalid channel %u/0x%x; no mapping\n", 990 __func__, chan->ic_freq, chan->ic_flags); 991 return AH_FALSE; 992 } 993 SAVE_CCK(ah, chan, isBmode); 994 995 if (ahp->ah_bIQCalibration == IQ_CAL_DONE || 996 ahp->ah_bIQCalibration == IQ_CAL_INACTIVE) 997 *isCalDone = AH_TRUE; 998 999 /* IQ calibration in progress. Check to see if it has finished. */ 1000 if (ahp->ah_bIQCalibration == IQ_CAL_RUNNING && 1001 !(OS_REG_READ(ah, AR_PHY_TIMING_CTRL4) & AR_PHY_TIMING_CTRL4_DO_IQCAL)) { 1002 int i; 1003 1004 /* IQ Calibration has finished. */ 1005 ahp->ah_bIQCalibration = IQ_CAL_INACTIVE; 1006 *isCalDone = AH_TRUE; 1007 1008 /* workaround for misgated IQ Cal results */ 1009 i = 0; 1010 do { 1011 /* Read calibration results. */ 1012 powerMeasI = OS_REG_READ(ah, AR_PHY_IQCAL_RES_PWR_MEAS_I); 1013 powerMeasQ = OS_REG_READ(ah, AR_PHY_IQCAL_RES_PWR_MEAS_Q); 1014 iqCorrMeas = OS_REG_READ(ah, AR_PHY_IQCAL_RES_IQ_CORR_MEAS); 1015 if (powerMeasI && powerMeasQ) 1016 break; 1017 /* Do we really need this??? */ 1018 OS_REG_SET_BIT(ah, AR_PHY_TIMING_CTRL4, 1019 AR_PHY_TIMING_CTRL4_DO_IQCAL); 1020 } while (++i < IQ_CAL_TRIES); 1021 1022 HALDEBUG(ah, HAL_DEBUG_PERCAL, 1023 "%s: IQ cal finished: %d tries\n", __func__, i); 1024 HALDEBUG(ah, HAL_DEBUG_PERCAL, 1025 "%s: powerMeasI %u powerMeasQ %u iqCorrMeas %d\n", 1026 __func__, powerMeasI, powerMeasQ, iqCorrMeas); 1027 1028 /* 1029 * Prescale these values to remove 64-bit operation 1030 * requirement at the loss of a little precision. 1031 */ 1032 iCoffDenom = (powerMeasI / 2 + powerMeasQ / 2) / 128; 1033 qCoffDenom = powerMeasQ / 128; 1034 1035 /* Protect against divide-by-0 and loss of sign bits. */ 1036 if (iCoffDenom != 0 && qCoffDenom >= 2) { 1037 iCoff = (int8_t)(-iqCorrMeas) / iCoffDenom; 1038 /* IQCORR_Q_I_COFF is a signed 6 bit number */ 1039 if (iCoff < -32) { 1040 iCoff = -32; 1041 } else if (iCoff > 31) { 1042 iCoff = 31; 1043 } 1044 1045 /* IQCORR_Q_Q_COFF is a signed 5 bit number */ 1046 qCoff = (powerMeasI / qCoffDenom) - 128; 1047 if (qCoff < -16) { 1048 qCoff = -16; 1049 } else if (qCoff > 15) { 1050 qCoff = 15; 1051 } 1052 1053 HALDEBUG(ah, HAL_DEBUG_PERCAL, 1054 "%s: iCoff %d qCoff %d\n", __func__, iCoff, qCoff); 1055 1056 /* Write values and enable correction */ 1057 OS_REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4, 1058 AR_PHY_TIMING_CTRL4_IQCORR_Q_I_COFF, iCoff); 1059 OS_REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4, 1060 AR_PHY_TIMING_CTRL4_IQCORR_Q_Q_COFF, qCoff); 1061 OS_REG_SET_BIT(ah, AR_PHY_TIMING_CTRL4, 1062 AR_PHY_TIMING_CTRL4_IQCORR_ENABLE); 1063 1064 ahp->ah_bIQCalibration = IQ_CAL_DONE; 1065 ichan->privFlags |= CHANNEL_IQVALID; 1066 ichan->iCoff = iCoff; 1067 ichan->qCoff = qCoff; 1068 } 1069 } else if (!IEEE80211_IS_CHAN_B(chan) && 1070 ahp->ah_bIQCalibration == IQ_CAL_DONE && 1071 (ichan->privFlags & CHANNEL_IQVALID) == 0) { 1072 /* 1073 * Start IQ calibration if configured channel has changed. 1074 * Use a magic number of 15 based on default value. 1075 */ 1076 OS_REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4, 1077 AR_PHY_TIMING_CTRL4_IQCAL_LOG_COUNT_MAX, 1078 INIT_IQCAL_LOG_COUNT_MAX); 1079 OS_REG_SET_BIT(ah, AR_PHY_TIMING_CTRL4, 1080 AR_PHY_TIMING_CTRL4_DO_IQCAL); 1081 ahp->ah_bIQCalibration = IQ_CAL_RUNNING; 1082 } 1083 /* XXX EAR */ 1084 1085 if (longCal) { 1086 /* Check noise floor results */ 1087 ar5212GetNf(ah, chan); 1088 if (!IEEE80211_IS_CHAN_CWINT(chan)) { 1089 /* Perform cal for 5Ghz channels and any OFDM on 5112 */ 1090 if (IEEE80211_IS_CHAN_5GHZ(chan) || 1091 (IS_RAD5112(ah) && IEEE80211_IS_CHAN_OFDM(chan))) 1092 ar5212RequestRfgain(ah); 1093 } 1094 } 1095 RESTORE_CCK(ah, chan, isBmode); 1096 1097 return AH_TRUE; 1098 #undef IQ_CAL_TRIES 1099 } 1100 1101 HAL_BOOL 1102 ar5212PerCalibration(struct ath_hal *ah, struct ieee80211_channel *chan, 1103 HAL_BOOL *isIQdone) 1104 { 1105 return ar5212PerCalibrationN(ah, chan, 0x1, AH_TRUE, isIQdone); 1106 } 1107 1108 HAL_BOOL 1109 ar5212ResetCalValid(struct ath_hal *ah, const struct ieee80211_channel *chan) 1110 { 1111 HAL_CHANNEL_INTERNAL *ichan; 1112 1113 ichan = ath_hal_checkchannel(ah, chan); 1114 if (ichan == AH_NULL) { 1115 HALDEBUG(ah, HAL_DEBUG_ANY, 1116 "%s: invalid channel %u/0x%x; no mapping\n", 1117 __func__, chan->ic_freq, chan->ic_flags); 1118 return AH_FALSE; 1119 } 1120 ichan->privFlags &= ~CHANNEL_IQVALID; 1121 return AH_TRUE; 1122 } 1123 1124 /************************************************************** 1125 * ar5212MacStop 1126 * 1127 * Disables all active QCUs and ensure that the mac is in a 1128 * quiessence state. 1129 */ 1130 static HAL_BOOL 1131 ar5212MacStop(struct ath_hal *ah) 1132 { 1133 HAL_BOOL status; 1134 uint32_t count; 1135 uint32_t pendFrameCount; 1136 uint32_t macStateFlag; 1137 uint32_t queue; 1138 1139 status = AH_FALSE; 1140 1141 /* Disable Rx Operation ***********************************/ 1142 OS_REG_SET_BIT(ah, AR_CR, AR_CR_RXD); 1143 1144 /* Disable TX Operation ***********************************/ 1145 #ifdef NOT_YET 1146 ar5212SetTxdpInvalid(ah); 1147 #endif 1148 OS_REG_SET_BIT(ah, AR_Q_TXD, AR_Q_TXD_M); 1149 1150 /* Polling operation for completion of disable ************/ 1151 macStateFlag = TX_ENABLE_CHECK | RX_ENABLE_CHECK; 1152 1153 for (count = 0; count < MAX_RESET_WAIT; count++) { 1154 if (macStateFlag & RX_ENABLE_CHECK) { 1155 if (!OS_REG_IS_BIT_SET(ah, AR_CR, AR_CR_RXE)) { 1156 macStateFlag &= ~RX_ENABLE_CHECK; 1157 } 1158 } 1159 1160 if (macStateFlag & TX_ENABLE_CHECK) { 1161 if (!OS_REG_IS_BIT_SET(ah, AR_Q_TXE, AR_Q_TXE_M)) { 1162 macStateFlag &= ~TX_ENABLE_CHECK; 1163 macStateFlag |= TX_QUEUEPEND_CHECK; 1164 } 1165 } 1166 if (macStateFlag & TX_QUEUEPEND_CHECK) { 1167 pendFrameCount = 0; 1168 for (queue = 0; queue < AR_NUM_DCU; queue++) { 1169 pendFrameCount += OS_REG_READ(ah, 1170 AR_Q0_STS + (queue * 4)) & 1171 AR_Q_STS_PEND_FR_CNT; 1172 } 1173 if (pendFrameCount == 0) { 1174 macStateFlag &= ~TX_QUEUEPEND_CHECK; 1175 } 1176 } 1177 if (macStateFlag == 0) { 1178 status = AH_TRUE; 1179 break; 1180 } 1181 OS_DELAY(50); 1182 } 1183 1184 if (status != AH_TRUE) { 1185 HALDEBUG(ah, HAL_DEBUG_RESET, 1186 "%s:Failed to stop the MAC state 0x%x\n", 1187 __func__, macStateFlag); 1188 } 1189 1190 return status; 1191 } 1192 1193 /* 1194 * Write the given reset bit mask into the reset register 1195 */ 1196 static HAL_BOOL 1197 ar5212SetResetReg(struct ath_hal *ah, uint32_t resetMask) 1198 { 1199 uint32_t mask = resetMask ? resetMask : ~0; 1200 HAL_BOOL rt; 1201 1202 /* Never reset the PCIE core */ 1203 if (AH_PRIVATE(ah)->ah_ispcie) { 1204 resetMask &= ~AR_RC_PCI; 1205 } 1206 1207 if (resetMask & (AR_RC_MAC | AR_RC_PCI)) { 1208 /* 1209 * To ensure that the driver can reset the 1210 * MAC, wake up the chip 1211 */ 1212 rt = ar5212SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE); 1213 1214 if (rt != AH_TRUE) { 1215 return rt; 1216 } 1217 1218 /* 1219 * Disable interrupts 1220 */ 1221 OS_REG_WRITE(ah, AR_IER, AR_IER_DISABLE); 1222 OS_REG_READ(ah, AR_IER); 1223 1224 if (ar5212MacStop(ah) != AH_TRUE) { 1225 /* 1226 * Failed to stop the MAC gracefully; let's be more forceful then 1227 */ 1228 1229 /* need some delay before flush any pending MMR writes */ 1230 OS_DELAY(15); 1231 OS_REG_READ(ah, AR_RXDP); 1232 1233 resetMask |= AR_RC_MAC | AR_RC_BB; 1234 /* _Never_ reset PCI Express core */ 1235 if (! AH_PRIVATE(ah)->ah_ispcie) { 1236 resetMask |= AR_RC_PCI; 1237 } 1238 #if 0 1239 /* 1240 * Flush the park address of the PCI controller 1241 */ 1242 /* Read PCI slot information less than Hainan revision */ 1243 if (AH_PRIVATE(ah)->ah_bustype == HAL_BUS_TYPE_PCI) { 1244 if (!IS_5112_REV5_UP(ah)) { 1245 #define PCI_COMMON_CONFIG_STATUS 0x06 1246 u_int32_t i; 1247 u_int16_t reg16; 1248 1249 for (i = 0; i < 32; i++) { 1250 ath_hal_read_pci_config_space(ah, 1251 PCI_COMMON_CONFIG_STATUS, 1252 ®16, sizeof(reg16)); 1253 } 1254 } 1255 #undef PCI_COMMON_CONFIG_STATUS 1256 } 1257 #endif 1258 } else { 1259 /* 1260 * MAC stopped gracefully; no need to warm-reset the PCI bus 1261 */ 1262 1263 resetMask &= ~AR_RC_PCI; 1264 1265 /* need some delay before flush any pending MMR writes */ 1266 OS_DELAY(15); 1267 OS_REG_READ(ah, AR_RXDP); 1268 } 1269 } 1270 1271 (void) OS_REG_READ(ah, AR_RXDP);/* flush any pending MMR writes */ 1272 OS_REG_WRITE(ah, AR_RC, resetMask); 1273 OS_DELAY(15); /* need to wait at least 128 clocks 1274 when reseting PCI before read */ 1275 mask &= (AR_RC_MAC | AR_RC_BB); 1276 resetMask &= (AR_RC_MAC | AR_RC_BB); 1277 rt = ath_hal_wait(ah, AR_RC, mask, resetMask); 1278 if ((resetMask & AR_RC_MAC) == 0) { 1279 if (isBigEndian()) { 1280 /* 1281 * Set CFG, little-endian for descriptor accesses. 1282 */ 1283 mask = INIT_CONFIG_STATUS | AR_CFG_SWRD; 1284 #ifndef AH_NEED_DESC_SWAP 1285 mask |= AR_CFG_SWTD; 1286 #endif 1287 OS_REG_WRITE(ah, AR_CFG, mask); 1288 } else 1289 OS_REG_WRITE(ah, AR_CFG, INIT_CONFIG_STATUS); 1290 if (ar5212SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE)) 1291 (void) OS_REG_READ(ah, AR_ISR_RAC); 1292 } 1293 1294 /* track PHY power state so we don't try to r/w BB registers */ 1295 AH5212(ah)->ah_phyPowerOn = ((resetMask & AR_RC_BB) == 0); 1296 return rt; 1297 } 1298 1299 int16_t 1300 ar5212GetNoiseFloor(struct ath_hal *ah) 1301 { 1302 int16_t nf = (OS_REG_READ(ah, AR_PHY(25)) >> 19) & 0x1ff; 1303 if (nf & 0x100) 1304 nf = 0 - ((nf ^ 0x1ff) + 1); 1305 return nf; 1306 } 1307 1308 static HAL_BOOL 1309 getNoiseFloorThresh(struct ath_hal *ah, const struct ieee80211_channel *chan, 1310 int16_t *nft) 1311 { 1312 const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom; 1313 1314 HALASSERT(ah->ah_magic == AR5212_MAGIC); 1315 1316 switch (chan->ic_flags & IEEE80211_CHAN_ALLFULL) { 1317 case IEEE80211_CHAN_A: 1318 *nft = ee->ee_noiseFloorThresh[headerInfo11A]; 1319 break; 1320 case IEEE80211_CHAN_B: 1321 *nft = ee->ee_noiseFloorThresh[headerInfo11B]; 1322 break; 1323 case IEEE80211_CHAN_G: 1324 case IEEE80211_CHAN_PUREG: /* NB: really 108G */ 1325 *nft = ee->ee_noiseFloorThresh[headerInfo11G]; 1326 break; 1327 default: 1328 HALDEBUG(ah, HAL_DEBUG_ANY, 1329 "%s: invalid channel flags %u/0x%x\n", 1330 __func__, chan->ic_freq, chan->ic_flags); 1331 return AH_FALSE; 1332 } 1333 return AH_TRUE; 1334 } 1335 1336 /* 1337 * Setup the noise floor cal history buffer. 1338 */ 1339 void 1340 ar5212InitNfCalHistBuffer(struct ath_hal *ah) 1341 { 1342 struct ath_hal_5212 *ahp = AH5212(ah); 1343 int i; 1344 1345 ahp->ah_nfCalHist.first_run = 1; 1346 ahp->ah_nfCalHist.currIndex = 0; 1347 ahp->ah_nfCalHist.privNF = AR5212_CCA_MAX_GOOD_VALUE; 1348 ahp->ah_nfCalHist.invalidNFcount = AR512_NF_CAL_HIST_MAX; 1349 for (i = 0; i < AR512_NF_CAL_HIST_MAX; i ++) 1350 ahp->ah_nfCalHist.nfCalBuffer[i] = AR5212_CCA_MAX_GOOD_VALUE; 1351 } 1352 1353 /* 1354 * Add a noise floor value to the ring buffer. 1355 */ 1356 static __inline void 1357 updateNFHistBuff(struct ar5212NfCalHist *h, int16_t nf) 1358 { 1359 h->nfCalBuffer[h->currIndex] = nf; 1360 if (++h->currIndex >= AR512_NF_CAL_HIST_MAX) 1361 h->currIndex = 0; 1362 } 1363 1364 /* 1365 * Return the median noise floor value in the ring buffer. 1366 */ 1367 int16_t 1368 ar5212GetNfHistMid(const int16_t calData[AR512_NF_CAL_HIST_MAX]) 1369 { 1370 int16_t sort[AR512_NF_CAL_HIST_MAX]; 1371 int i, j; 1372 1373 OS_MEMCPY(sort, calData, AR512_NF_CAL_HIST_MAX*sizeof(int16_t)); 1374 for (i = 0; i < AR512_NF_CAL_HIST_MAX-1; i ++) { 1375 for (j = 1; j < AR512_NF_CAL_HIST_MAX-i; j ++) { 1376 if (sort[j] > sort[j-1]) { 1377 int16_t nf = sort[j]; 1378 sort[j] = sort[j-1]; 1379 sort[j-1] = nf; 1380 } 1381 } 1382 } 1383 return sort[(AR512_NF_CAL_HIST_MAX-1)>>1]; 1384 } 1385 1386 /* 1387 * Read the NF and check it against the noise floor threshold 1388 */ 1389 int16_t 1390 ar5212GetNf(struct ath_hal *ah, struct ieee80211_channel *chan) 1391 { 1392 struct ath_hal_5212 *ahp = AH5212(ah); 1393 struct ar5212NfCalHist *h = &ahp->ah_nfCalHist; 1394 HAL_CHANNEL_INTERNAL *ichan = ath_hal_checkchannel(ah, chan); 1395 int16_t nf, nfThresh; 1396 int32_t val; 1397 1398 if (OS_REG_READ(ah, AR_PHY_AGC_CONTROL) & AR_PHY_AGC_CONTROL_NF) { 1399 HALDEBUG(ah, HAL_DEBUG_ANY, 1400 "%s: NF did not complete in calibration window\n", __func__); 1401 ichan->rawNoiseFloor = h->privNF; /* most recent value */ 1402 return ichan->rawNoiseFloor; 1403 } 1404 1405 /* 1406 * Finished NF cal, check against threshold. 1407 */ 1408 nf = ar5212GetNoiseFloor(ah); 1409 if (getNoiseFloorThresh(ah, chan, &nfThresh)) { 1410 if (nf > nfThresh) { 1411 HALDEBUG(ah, HAL_DEBUG_ANY, 1412 "%s: noise floor failed detected; detected %u, " 1413 "threshold %u\n", __func__, nf, nfThresh); 1414 /* 1415 * NB: Don't discriminate 2.4 vs 5Ghz, if this 1416 * happens it indicates a problem regardless 1417 * of the band. 1418 */ 1419 chan->ic_state |= IEEE80211_CHANSTATE_CWINT; 1420 nf = 0; 1421 } 1422 } else 1423 nf = 0; 1424 1425 /* 1426 * Pass through histogram and write median value as 1427 * calculated from the accrued window. We require a 1428 * full window of in-range values to be seen before we 1429 * start using the history. 1430 */ 1431 updateNFHistBuff(h, nf); 1432 if (h->first_run) { 1433 if (nf < AR5212_CCA_MIN_BAD_VALUE || 1434 nf > AR5212_CCA_MAX_HIGH_VALUE) { 1435 nf = AR5212_CCA_MAX_GOOD_VALUE; 1436 h->invalidNFcount = AR512_NF_CAL_HIST_MAX; 1437 } else if (--(h->invalidNFcount) == 0) { 1438 h->first_run = 0; 1439 h->privNF = nf = ar5212GetNfHistMid(h->nfCalBuffer); 1440 } else { 1441 nf = AR5212_CCA_MAX_GOOD_VALUE; 1442 } 1443 } else { 1444 h->privNF = nf = ar5212GetNfHistMid(h->nfCalBuffer); 1445 } 1446 1447 val = OS_REG_READ(ah, AR_PHY(25)); 1448 val &= 0xFFFFFE00; 1449 val |= (((uint32_t)nf << 1) & 0x1FF); 1450 OS_REG_WRITE(ah, AR_PHY(25), val); 1451 OS_REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_ENABLE_NF); 1452 OS_REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NO_UPDATE_NF); 1453 OS_REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF); 1454 1455 if (!ath_hal_wait(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF, 0)) { 1456 #ifdef AH_DEBUG 1457 ath_hal_printf(ah, "%s: AGC not ready AGC_CONTROL 0x%x\n", 1458 __func__, OS_REG_READ(ah, AR_PHY_AGC_CONTROL)); 1459 #endif 1460 } 1461 1462 /* 1463 * Now load a high maxCCAPower value again so that we're 1464 * not capped by the median we just loaded 1465 */ 1466 val &= 0xFFFFFE00; 1467 val |= (((uint32_t)(-50) << 1) & 0x1FF); 1468 OS_REG_WRITE(ah, AR_PHY(25), val); 1469 OS_REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_ENABLE_NF); 1470 OS_REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NO_UPDATE_NF); 1471 OS_REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF); 1472 1473 return (ichan->rawNoiseFloor = nf); 1474 } 1475 1476 /* 1477 * Set up compression configuration registers 1478 */ 1479 void 1480 ar5212SetCompRegs(struct ath_hal *ah) 1481 { 1482 struct ath_hal_5212 *ahp = AH5212(ah); 1483 int i; 1484 1485 /* Check if h/w supports compression */ 1486 if (!AH_PRIVATE(ah)->ah_caps.halCompressSupport) 1487 return; 1488 1489 OS_REG_WRITE(ah, AR_DCCFG, 1); 1490 1491 OS_REG_WRITE(ah, AR_CCFG, 1492 (AR_COMPRESSION_WINDOW_SIZE >> 8) & AR_CCFG_WIN_M); 1493 1494 OS_REG_WRITE(ah, AR_CCFG, 1495 OS_REG_READ(ah, AR_CCFG) | AR_CCFG_MIB_INT_EN); 1496 OS_REG_WRITE(ah, AR_CCUCFG, 1497 AR_CCUCFG_RESET_VAL | AR_CCUCFG_CATCHUP_EN); 1498 1499 OS_REG_WRITE(ah, AR_CPCOVF, 0); 1500 1501 /* reset decompression mask */ 1502 for (i = 0; i < HAL_DECOMP_MASK_SIZE; i++) { 1503 OS_REG_WRITE(ah, AR_DCM_A, i); 1504 OS_REG_WRITE(ah, AR_DCM_D, ahp->ah_decompMask[i]); 1505 } 1506 } 1507 1508 HAL_BOOL 1509 ar5212SetAntennaSwitchInternal(struct ath_hal *ah, HAL_ANT_SETTING settings, 1510 const struct ieee80211_channel *chan) 1511 { 1512 #define ANT_SWITCH_TABLE1 AR_PHY(88) 1513 #define ANT_SWITCH_TABLE2 AR_PHY(89) 1514 struct ath_hal_5212 *ahp = AH5212(ah); 1515 const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom; 1516 uint32_t antSwitchA, antSwitchB; 1517 int ix; 1518 1519 HALASSERT(ah->ah_magic == AR5212_MAGIC); 1520 HALASSERT(ahp->ah_phyPowerOn); 1521 1522 switch (chan->ic_flags & IEEE80211_CHAN_ALLFULL) { 1523 case IEEE80211_CHAN_A: 1524 ix = 0; 1525 break; 1526 case IEEE80211_CHAN_G: 1527 case IEEE80211_CHAN_PUREG: /* NB: 108G */ 1528 ix = 2; 1529 break; 1530 case IEEE80211_CHAN_B: 1531 if (IS_2425(ah) || IS_2417(ah)) { 1532 /* NB: Nala/Swan: 11b is handled using 11g */ 1533 ix = 2; 1534 } else 1535 ix = 1; 1536 break; 1537 default: 1538 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid channel flags 0x%x\n", 1539 __func__, chan->ic_flags); 1540 return AH_FALSE; 1541 } 1542 1543 antSwitchA = ee->ee_antennaControl[1][ix] 1544 | (ee->ee_antennaControl[2][ix] << 6) 1545 | (ee->ee_antennaControl[3][ix] << 12) 1546 | (ee->ee_antennaControl[4][ix] << 18) 1547 | (ee->ee_antennaControl[5][ix] << 24) 1548 ; 1549 antSwitchB = ee->ee_antennaControl[6][ix] 1550 | (ee->ee_antennaControl[7][ix] << 6) 1551 | (ee->ee_antennaControl[8][ix] << 12) 1552 | (ee->ee_antennaControl[9][ix] << 18) 1553 | (ee->ee_antennaControl[10][ix] << 24) 1554 ; 1555 /* 1556 * For fixed antenna, give the same setting for both switch banks 1557 */ 1558 switch (settings) { 1559 case HAL_ANT_FIXED_A: 1560 antSwitchB = antSwitchA; 1561 break; 1562 case HAL_ANT_FIXED_B: 1563 antSwitchA = antSwitchB; 1564 break; 1565 case HAL_ANT_VARIABLE: 1566 break; 1567 default: 1568 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: bad antenna setting %u\n", 1569 __func__, settings); 1570 return AH_FALSE; 1571 } 1572 if (antSwitchB == antSwitchA) { 1573 HALDEBUG(ah, HAL_DEBUG_RFPARAM, 1574 "%s: Setting fast diversity off.\n", __func__); 1575 OS_REG_CLR_BIT(ah,AR_PHY_CCK_DETECT, 1576 AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV); 1577 ahp->ah_diversity = AH_FALSE; 1578 } else { 1579 HALDEBUG(ah, HAL_DEBUG_RFPARAM, 1580 "%s: Setting fast diversity on.\n", __func__); 1581 OS_REG_SET_BIT(ah,AR_PHY_CCK_DETECT, 1582 AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV); 1583 ahp->ah_diversity = AH_TRUE; 1584 } 1585 ahp->ah_antControl = settings; 1586 1587 OS_REG_WRITE(ah, ANT_SWITCH_TABLE1, antSwitchA); 1588 OS_REG_WRITE(ah, ANT_SWITCH_TABLE2, antSwitchB); 1589 1590 return AH_TRUE; 1591 #undef ANT_SWITCH_TABLE2 1592 #undef ANT_SWITCH_TABLE1 1593 } 1594 1595 HAL_BOOL 1596 ar5212IsSpurChannel(struct ath_hal *ah, const struct ieee80211_channel *chan) 1597 { 1598 uint16_t freq = ath_hal_gethwchannel(ah, chan); 1599 uint32_t clockFreq = 1600 ((IS_5413(ah) || IS_RAD5112_ANY(ah) || IS_2417(ah)) ? 40 : 32); 1601 return ( ((freq % clockFreq) != 0) 1602 && (((freq % clockFreq) < 10) 1603 || (((freq) % clockFreq) > 22)) ); 1604 } 1605 1606 /* 1607 * Read EEPROM header info and program the device for correct operation 1608 * given the channel value. 1609 */ 1610 HAL_BOOL 1611 ar5212SetBoardValues(struct ath_hal *ah, const struct ieee80211_channel *chan) 1612 { 1613 #define NO_FALSE_DETECT_BACKOFF 2 1614 #define CB22_FALSE_DETECT_BACKOFF 6 1615 #define AR_PHY_BIS(_ah, _reg, _mask, _val) \ 1616 OS_REG_WRITE(_ah, AR_PHY(_reg), \ 1617 (OS_REG_READ(_ah, AR_PHY(_reg)) & _mask) | (_val)); 1618 struct ath_hal_5212 *ahp = AH5212(ah); 1619 const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom; 1620 int arrayMode, falseDectectBackoff; 1621 int is2GHz = IEEE80211_IS_CHAN_2GHZ(chan); 1622 HAL_CHANNEL_INTERNAL *ichan = ath_hal_checkchannel(ah, chan); 1623 int8_t adcDesiredSize, pgaDesiredSize; 1624 uint16_t switchSettling, txrxAtten, rxtxMargin; 1625 int iCoff, qCoff; 1626 1627 HALASSERT(ah->ah_magic == AR5212_MAGIC); 1628 1629 switch (chan->ic_flags & IEEE80211_CHAN_ALLTURBOFULL) { 1630 case IEEE80211_CHAN_A: 1631 case IEEE80211_CHAN_ST: 1632 arrayMode = headerInfo11A; 1633 if (!IS_RAD5112_ANY(ah) && !IS_2413(ah) && !IS_5413(ah)) 1634 OS_REG_RMW_FIELD(ah, AR_PHY_FRAME_CTL, 1635 AR_PHY_FRAME_CTL_TX_CLIP, 1636 ahp->ah_gainValues.currStep->paramVal[GP_TXCLIP]); 1637 break; 1638 case IEEE80211_CHAN_B: 1639 arrayMode = headerInfo11B; 1640 break; 1641 case IEEE80211_CHAN_G: 1642 case IEEE80211_CHAN_108G: 1643 arrayMode = headerInfo11G; 1644 break; 1645 default: 1646 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid channel flags 0x%x\n", 1647 __func__, chan->ic_flags); 1648 return AH_FALSE; 1649 } 1650 1651 /* Set the antenna register(s) correctly for the chip revision */ 1652 AR_PHY_BIS(ah, 68, 0xFFFFFC06, 1653 (ee->ee_antennaControl[0][arrayMode] << 4) | 0x1); 1654 1655 ar5212SetAntennaSwitchInternal(ah, ahp->ah_antControl, chan); 1656 1657 /* Set the Noise Floor Thresh on ar5211 devices */ 1658 OS_REG_WRITE(ah, AR_PHY(90), 1659 (ee->ee_noiseFloorThresh[arrayMode] & 0x1FF) 1660 | (1 << 9)); 1661 1662 if (ee->ee_version >= AR_EEPROM_VER5_0 && IEEE80211_IS_CHAN_TURBO(chan)) { 1663 switchSettling = ee->ee_switchSettlingTurbo[is2GHz]; 1664 adcDesiredSize = ee->ee_adcDesiredSizeTurbo[is2GHz]; 1665 pgaDesiredSize = ee->ee_pgaDesiredSizeTurbo[is2GHz]; 1666 txrxAtten = ee->ee_txrxAttenTurbo[is2GHz]; 1667 rxtxMargin = ee->ee_rxtxMarginTurbo[is2GHz]; 1668 } else { 1669 switchSettling = ee->ee_switchSettling[arrayMode]; 1670 adcDesiredSize = ee->ee_adcDesiredSize[arrayMode]; 1671 pgaDesiredSize = ee->ee_pgaDesiredSize[is2GHz]; 1672 txrxAtten = ee->ee_txrxAtten[is2GHz]; 1673 rxtxMargin = ee->ee_rxtxMargin[is2GHz]; 1674 } 1675 1676 OS_REG_RMW_FIELD(ah, AR_PHY_SETTLING, 1677 AR_PHY_SETTLING_SWITCH, switchSettling); 1678 OS_REG_RMW_FIELD(ah, AR_PHY_DESIRED_SZ, 1679 AR_PHY_DESIRED_SZ_ADC, adcDesiredSize); 1680 OS_REG_RMW_FIELD(ah, AR_PHY_DESIRED_SZ, 1681 AR_PHY_DESIRED_SZ_PGA, pgaDesiredSize); 1682 OS_REG_RMW_FIELD(ah, AR_PHY_RXGAIN, 1683 AR_PHY_RXGAIN_TXRX_ATTEN, txrxAtten); 1684 OS_REG_WRITE(ah, AR_PHY(13), 1685 (ee->ee_txEndToXPAOff[arrayMode] << 24) 1686 | (ee->ee_txEndToXPAOff[arrayMode] << 16) 1687 | (ee->ee_txFrameToXPAOn[arrayMode] << 8) 1688 | ee->ee_txFrameToXPAOn[arrayMode]); 1689 AR_PHY_BIS(ah, 10, 0xFFFF00FF, 1690 ee->ee_txEndToXLNAOn[arrayMode] << 8); 1691 AR_PHY_BIS(ah, 25, 0xFFF80FFF, 1692 (ee->ee_thresh62[arrayMode] << 12) & 0x7F000); 1693 1694 /* 1695 * False detect backoff - suspected 32 MHz spur causes false 1696 * detects in OFDM, causing Tx Hangs. Decrease weak signal 1697 * sensitivity for this card. 1698 */ 1699 falseDectectBackoff = NO_FALSE_DETECT_BACKOFF; 1700 if (ee->ee_version < AR_EEPROM_VER3_3) { 1701 /* XXX magic number */ 1702 if (AH_PRIVATE(ah)->ah_subvendorid == 0x1022 && 1703 IEEE80211_IS_CHAN_OFDM(chan)) 1704 falseDectectBackoff += CB22_FALSE_DETECT_BACKOFF; 1705 } else { 1706 if (ar5212IsSpurChannel(ah, chan)) 1707 falseDectectBackoff += ee->ee_falseDetectBackoff[arrayMode]; 1708 } 1709 AR_PHY_BIS(ah, 73, 0xFFFFFF01, (falseDectectBackoff << 1) & 0xFE); 1710 1711 if (ichan->privFlags & CHANNEL_IQVALID) { 1712 iCoff = ichan->iCoff; 1713 qCoff = ichan->qCoff; 1714 } else { 1715 iCoff = ee->ee_iqCalI[is2GHz]; 1716 qCoff = ee->ee_iqCalQ[is2GHz]; 1717 } 1718 1719 /* write previous IQ results */ 1720 OS_REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4, 1721 AR_PHY_TIMING_CTRL4_IQCORR_Q_I_COFF, iCoff); 1722 OS_REG_RMW_FIELD(ah, AR_PHY_TIMING_CTRL4, 1723 AR_PHY_TIMING_CTRL4_IQCORR_Q_Q_COFF, qCoff); 1724 OS_REG_SET_BIT(ah, AR_PHY_TIMING_CTRL4, 1725 AR_PHY_TIMING_CTRL4_IQCORR_ENABLE); 1726 1727 if (ee->ee_version >= AR_EEPROM_VER4_1) { 1728 if (!IEEE80211_IS_CHAN_108G(chan) || ee->ee_version >= AR_EEPROM_VER5_0) 1729 OS_REG_RMW_FIELD(ah, AR_PHY_GAIN_2GHZ, 1730 AR_PHY_GAIN_2GHZ_RXTX_MARGIN, rxtxMargin); 1731 } 1732 if (ee->ee_version >= AR_EEPROM_VER5_1) { 1733 /* for now always disabled */ 1734 OS_REG_WRITE(ah, AR_PHY_HEAVY_CLIP_ENABLE, 0); 1735 } 1736 1737 return AH_TRUE; 1738 #undef AR_PHY_BIS 1739 #undef NO_FALSE_DETECT_BACKOFF 1740 #undef CB22_FALSE_DETECT_BACKOFF 1741 } 1742 1743 /* 1744 * Apply Spur Immunity to Boards that require it. 1745 * Applies only to OFDM RX operation. 1746 */ 1747 1748 void 1749 ar5212SetSpurMitigation(struct ath_hal *ah, 1750 const struct ieee80211_channel *chan) 1751 { 1752 uint32_t pilotMask[2] = {0, 0}, binMagMask[4] = {0, 0, 0 , 0}; 1753 uint16_t i, finalSpur, curChanAsSpur, binWidth = 0, spurDetectWidth, spurChan; 1754 int32_t spurDeltaPhase = 0, spurFreqSd = 0, spurOffset, binOffsetNumT16, curBinOffset; 1755 int16_t numBinOffsets; 1756 static const uint16_t magMapFor4[4] = {1, 2, 2, 1}; 1757 static const uint16_t magMapFor3[3] = {1, 2, 1}; 1758 const uint16_t *pMagMap; 1759 HAL_BOOL is2GHz = IEEE80211_IS_CHAN_2GHZ(chan); 1760 HAL_CHANNEL_INTERNAL *ichan = ath_hal_checkchannel(ah, chan); 1761 uint32_t val; 1762 1763 #define CHAN_TO_SPUR(_f, _freq) ( ((_freq) - ((_f) ? 2300 : 4900)) * 10 ) 1764 if (IS_2417(ah)) { 1765 HALDEBUG(ah, HAL_DEBUG_RFPARAM, "%s: no spur mitigation\n", 1766 __func__); 1767 return; 1768 } 1769 1770 curChanAsSpur = CHAN_TO_SPUR(is2GHz, ichan->channel); 1771 1772 if (ichan->mainSpur) { 1773 /* Pull out the saved spur value */ 1774 finalSpur = ichan->mainSpur; 1775 } else { 1776 /* 1777 * Check if spur immunity should be performed for this channel 1778 * Should only be performed once per channel and then saved 1779 */ 1780 finalSpur = AR_NO_SPUR; 1781 spurDetectWidth = HAL_SPUR_CHAN_WIDTH; 1782 if (IEEE80211_IS_CHAN_TURBO(chan)) 1783 spurDetectWidth *= 2; 1784 1785 /* Decide if any spur affects the current channel */ 1786 for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) { 1787 spurChan = ath_hal_getSpurChan(ah, i, is2GHz); 1788 if (spurChan == AR_NO_SPUR) { 1789 break; 1790 } 1791 if ((curChanAsSpur - spurDetectWidth <= (spurChan & HAL_SPUR_VAL_MASK)) && 1792 (curChanAsSpur + spurDetectWidth >= (spurChan & HAL_SPUR_VAL_MASK))) { 1793 finalSpur = spurChan & HAL_SPUR_VAL_MASK; 1794 break; 1795 } 1796 } 1797 /* Save detected spur (or no spur) for this channel */ 1798 ichan->mainSpur = finalSpur; 1799 } 1800 1801 /* Write spur immunity data */ 1802 if (finalSpur == AR_NO_SPUR) { 1803 /* Disable Spur Immunity Regs if they appear set */ 1804 if (OS_REG_READ(ah, AR_PHY_TIMING_CTRL4) & AR_PHY_TIMING_CTRL4_ENABLE_SPUR_FILTER) { 1805 /* Clear Spur Delta Phase, Spur Freq, and enable bits */ 1806 OS_REG_RMW_FIELD(ah, AR_PHY_MASK_CTL, AR_PHY_MASK_CTL_RATE, 0); 1807 val = OS_REG_READ(ah, AR_PHY_TIMING_CTRL4); 1808 val &= ~(AR_PHY_TIMING_CTRL4_ENABLE_SPUR_FILTER | 1809 AR_PHY_TIMING_CTRL4_ENABLE_CHAN_MASK | 1810 AR_PHY_TIMING_CTRL4_ENABLE_PILOT_MASK); 1811 OS_REG_WRITE(ah, AR_PHY_MASK_CTL, val); 1812 OS_REG_WRITE(ah, AR_PHY_TIMING11, 0); 1813 1814 /* Clear pilot masks */ 1815 OS_REG_WRITE(ah, AR_PHY_TIMING7, 0); 1816 OS_REG_RMW_FIELD(ah, AR_PHY_TIMING8, AR_PHY_TIMING8_PILOT_MASK_2, 0); 1817 OS_REG_WRITE(ah, AR_PHY_TIMING9, 0); 1818 OS_REG_RMW_FIELD(ah, AR_PHY_TIMING10, AR_PHY_TIMING10_PILOT_MASK_2, 0); 1819 1820 /* Clear magnitude masks */ 1821 OS_REG_WRITE(ah, AR_PHY_BIN_MASK_1, 0); 1822 OS_REG_WRITE(ah, AR_PHY_BIN_MASK_2, 0); 1823 OS_REG_WRITE(ah, AR_PHY_BIN_MASK_3, 0); 1824 OS_REG_RMW_FIELD(ah, AR_PHY_MASK_CTL, AR_PHY_MASK_CTL_MASK_4, 0); 1825 OS_REG_WRITE(ah, AR_PHY_BIN_MASK2_1, 0); 1826 OS_REG_WRITE(ah, AR_PHY_BIN_MASK2_2, 0); 1827 OS_REG_WRITE(ah, AR_PHY_BIN_MASK2_3, 0); 1828 OS_REG_RMW_FIELD(ah, AR_PHY_BIN_MASK2_4, AR_PHY_BIN_MASK2_4_MASK_4, 0); 1829 } 1830 } else { 1831 spurOffset = finalSpur - curChanAsSpur; 1832 /* 1833 * Spur calculations: 1834 * spurDeltaPhase is (spurOffsetIn100KHz / chipFrequencyIn100KHz) << 21 1835 * spurFreqSd is (spurOffsetIn100KHz / sampleFrequencyIn100KHz) << 11 1836 */ 1837 if (IEEE80211_IS_CHAN_TURBO(chan)) { 1838 /* Chip Frequency & sampleFrequency are 80 MHz */ 1839 spurDeltaPhase = (spurOffset << 16) / 25; 1840 spurFreqSd = spurDeltaPhase >> 10; 1841 binWidth = HAL_BIN_WIDTH_TURBO_100HZ; 1842 } else if (IEEE80211_IS_CHAN_G(chan)) { 1843 /* Chip Frequency is 44MHz, sampleFrequency is 40 MHz */ 1844 spurFreqSd = (spurOffset << 8) / 55; 1845 spurDeltaPhase = (spurOffset << 17) / 25; 1846 binWidth = HAL_BIN_WIDTH_BASE_100HZ; 1847 } else { 1848 HALASSERT(!IEEE80211_IS_CHAN_B(chan)); 1849 /* Chip Frequency & sampleFrequency are 40 MHz */ 1850 spurDeltaPhase = (spurOffset << 17) / 25; 1851 spurFreqSd = spurDeltaPhase >> 10; 1852 binWidth = HAL_BIN_WIDTH_BASE_100HZ; 1853 } 1854 1855 /* Compute Pilot Mask */ 1856 binOffsetNumT16 = ((spurOffset * 1000) << 4) / binWidth; 1857 /* The spur is on a bin if it's remainder at times 16 is 0 */ 1858 if (binOffsetNumT16 & 0xF) { 1859 numBinOffsets = 4; 1860 pMagMap = magMapFor4; 1861 } else { 1862 numBinOffsets = 3; 1863 pMagMap = magMapFor3; 1864 } 1865 for (i = 0; i < numBinOffsets; i++) { 1866 if ((binOffsetNumT16 >> 4) > HAL_MAX_BINS_ALLOWED) { 1867 HALDEBUG(ah, HAL_DEBUG_ANY, 1868 "Too man bins in spur mitigation\n"); 1869 return; 1870 } 1871 1872 /* Get Pilot Mask values */ 1873 curBinOffset = (binOffsetNumT16 >> 4) + i + 25; 1874 if ((curBinOffset >= 0) && (curBinOffset <= 32)) { 1875 if (curBinOffset <= 25) 1876 pilotMask[0] |= 1 << curBinOffset; 1877 else if (curBinOffset >= 27) 1878 pilotMask[0] |= 1 << (curBinOffset - 1); 1879 } else if ((curBinOffset >= 33) && (curBinOffset <= 52)) 1880 pilotMask[1] |= 1 << (curBinOffset - 33); 1881 1882 /* Get viterbi values */ 1883 if ((curBinOffset >= -1) && (curBinOffset <= 14)) 1884 binMagMask[0] |= pMagMap[i] << (curBinOffset + 1) * 2; 1885 else if ((curBinOffset >= 15) && (curBinOffset <= 30)) 1886 binMagMask[1] |= pMagMap[i] << (curBinOffset - 15) * 2; 1887 else if ((curBinOffset >= 31) && (curBinOffset <= 46)) 1888 binMagMask[2] |= pMagMap[i] << (curBinOffset -31) * 2; 1889 else if((curBinOffset >= 47) && (curBinOffset <= 53)) 1890 binMagMask[3] |= pMagMap[i] << (curBinOffset -47) * 2; 1891 } 1892 1893 /* Write Spur Delta Phase, Spur Freq, and enable bits */ 1894 OS_REG_RMW_FIELD(ah, AR_PHY_MASK_CTL, AR_PHY_MASK_CTL_RATE, 0xFF); 1895 val = OS_REG_READ(ah, AR_PHY_TIMING_CTRL4); 1896 val |= (AR_PHY_TIMING_CTRL4_ENABLE_SPUR_FILTER | 1897 AR_PHY_TIMING_CTRL4_ENABLE_CHAN_MASK | 1898 AR_PHY_TIMING_CTRL4_ENABLE_PILOT_MASK); 1899 OS_REG_WRITE(ah, AR_PHY_TIMING_CTRL4, val); 1900 OS_REG_WRITE(ah, AR_PHY_TIMING11, AR_PHY_TIMING11_USE_SPUR_IN_AGC | 1901 SM(spurFreqSd, AR_PHY_TIMING11_SPUR_FREQ_SD) | 1902 SM(spurDeltaPhase, AR_PHY_TIMING11_SPUR_DELTA_PHASE)); 1903 1904 /* Write pilot masks */ 1905 OS_REG_WRITE(ah, AR_PHY_TIMING7, pilotMask[0]); 1906 OS_REG_RMW_FIELD(ah, AR_PHY_TIMING8, AR_PHY_TIMING8_PILOT_MASK_2, pilotMask[1]); 1907 OS_REG_WRITE(ah, AR_PHY_TIMING9, pilotMask[0]); 1908 OS_REG_RMW_FIELD(ah, AR_PHY_TIMING10, AR_PHY_TIMING10_PILOT_MASK_2, pilotMask[1]); 1909 1910 /* Write magnitude masks */ 1911 OS_REG_WRITE(ah, AR_PHY_BIN_MASK_1, binMagMask[0]); 1912 OS_REG_WRITE(ah, AR_PHY_BIN_MASK_2, binMagMask[1]); 1913 OS_REG_WRITE(ah, AR_PHY_BIN_MASK_3, binMagMask[2]); 1914 OS_REG_RMW_FIELD(ah, AR_PHY_MASK_CTL, AR_PHY_MASK_CTL_MASK_4, binMagMask[3]); 1915 OS_REG_WRITE(ah, AR_PHY_BIN_MASK2_1, binMagMask[0]); 1916 OS_REG_WRITE(ah, AR_PHY_BIN_MASK2_2, binMagMask[1]); 1917 OS_REG_WRITE(ah, AR_PHY_BIN_MASK2_3, binMagMask[2]); 1918 OS_REG_RMW_FIELD(ah, AR_PHY_BIN_MASK2_4, AR_PHY_BIN_MASK2_4_MASK_4, binMagMask[3]); 1919 } 1920 #undef CHAN_TO_SPUR 1921 } 1922 1923 /* 1924 * Delta slope coefficient computation. 1925 * Required for OFDM operation. 1926 */ 1927 void 1928 ar5212SetDeltaSlope(struct ath_hal *ah, const struct ieee80211_channel *chan) 1929 { 1930 #define COEF_SCALE_S 24 1931 #define INIT_CLOCKMHZSCALED 0x64000000 1932 uint16_t freq = ath_hal_gethwchannel(ah, chan); 1933 unsigned long coef_scaled, coef_exp, coef_man, ds_coef_exp, ds_coef_man; 1934 unsigned long clockMhzScaled = INIT_CLOCKMHZSCALED; 1935 1936 if (IEEE80211_IS_CHAN_TURBO(chan)) 1937 clockMhzScaled *= 2; 1938 /* half and quarter rate can divide the scaled clock by 2 or 4 respectively */ 1939 /* scale for selected channel bandwidth */ 1940 if (IEEE80211_IS_CHAN_HALF(chan)) { 1941 clockMhzScaled = clockMhzScaled >> 1; 1942 } else if (IEEE80211_IS_CHAN_QUARTER(chan)) { 1943 clockMhzScaled = clockMhzScaled >> 2; 1944 } 1945 1946 /* 1947 * ALGO -> coef = 1e8/fcarrier*fclock/40; 1948 * scaled coef to provide precision for this floating calculation 1949 */ 1950 coef_scaled = clockMhzScaled / freq; 1951 1952 /* 1953 * ALGO -> coef_exp = 14-floor(log2(coef)); 1954 * floor(log2(x)) is the highest set bit position 1955 */ 1956 for (coef_exp = 31; coef_exp > 0; coef_exp--) 1957 if ((coef_scaled >> coef_exp) & 0x1) 1958 break; 1959 /* A coef_exp of 0 is a legal bit position but an unexpected coef_exp */ 1960 HALASSERT(coef_exp); 1961 coef_exp = 14 - (coef_exp - COEF_SCALE_S); 1962 1963 /* 1964 * ALGO -> coef_man = floor(coef* 2^coef_exp+0.5); 1965 * The coefficient is already shifted up for scaling 1966 */ 1967 coef_man = coef_scaled + (1 << (COEF_SCALE_S - coef_exp - 1)); 1968 ds_coef_man = coef_man >> (COEF_SCALE_S - coef_exp); 1969 ds_coef_exp = coef_exp - 16; 1970 1971 OS_REG_RMW_FIELD(ah, AR_PHY_TIMING3, 1972 AR_PHY_TIMING3_DSC_MAN, ds_coef_man); 1973 OS_REG_RMW_FIELD(ah, AR_PHY_TIMING3, 1974 AR_PHY_TIMING3_DSC_EXP, ds_coef_exp); 1975 #undef INIT_CLOCKMHZSCALED 1976 #undef COEF_SCALE_S 1977 } 1978 1979 /* 1980 * Set a limit on the overall output power. Used for dynamic 1981 * transmit power control and the like. 1982 * 1983 * NB: limit is in units of 0.5 dbM. 1984 */ 1985 HAL_BOOL 1986 ar5212SetTxPowerLimit(struct ath_hal *ah, uint32_t limit) 1987 { 1988 /* XXX blech, construct local writable copy */ 1989 struct ieee80211_channel dummy = *AH_PRIVATE(ah)->ah_curchan; 1990 uint16_t dummyXpdGains[2]; 1991 HAL_BOOL isBmode; 1992 1993 SAVE_CCK(ah, &dummy, isBmode); 1994 AH_PRIVATE(ah)->ah_powerLimit = AH_MIN(limit, MAX_RATE_POWER); 1995 return ar5212SetTransmitPower(ah, &dummy, dummyXpdGains); 1996 } 1997 1998 /* 1999 * Set the transmit power in the baseband for the given 2000 * operating channel and mode. 2001 */ 2002 HAL_BOOL 2003 ar5212SetTransmitPower(struct ath_hal *ah, 2004 const struct ieee80211_channel *chan, uint16_t *rfXpdGain) 2005 { 2006 #define POW_OFDM(_r, _s) (((0 & 1)<< ((_s)+6)) | (((_r) & 0x3f) << (_s))) 2007 #define POW_CCK(_r, _s) (((_r) & 0x3f) << (_s)) 2008 #define N(a) (sizeof (a) / sizeof (a[0])) 2009 static const uint16_t tpcScaleReductionTable[5] = 2010 { 0, 3, 6, 9, MAX_RATE_POWER }; 2011 struct ath_hal_5212 *ahp = AH5212(ah); 2012 uint16_t freq = ath_hal_gethwchannel(ah, chan); 2013 const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom; 2014 int16_t minPower, maxPower, tpcInDb, powerLimit; 2015 int i; 2016 2017 HALASSERT(ah->ah_magic == AR5212_MAGIC); 2018 2019 OS_MEMZERO(ahp->ah_pcdacTable, ahp->ah_pcdacTableSize); 2020 OS_MEMZERO(ahp->ah_ratesArray, sizeof(ahp->ah_ratesArray)); 2021 2022 powerLimit = AH_MIN(MAX_RATE_POWER, AH_PRIVATE(ah)->ah_powerLimit); 2023 if (powerLimit >= MAX_RATE_POWER || powerLimit == 0) 2024 tpcInDb = tpcScaleReductionTable[AH_PRIVATE(ah)->ah_tpScale]; 2025 else 2026 tpcInDb = 0; 2027 if (!ar5212SetRateTable(ah, chan, tpcInDb, powerLimit, 2028 AH_TRUE, &minPower, &maxPower)) { 2029 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unable to set rate table\n", 2030 __func__); 2031 return AH_FALSE; 2032 } 2033 if (!ahp->ah_rfHal->setPowerTable(ah, 2034 &minPower, &maxPower, chan, rfXpdGain)) { 2035 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unable to set power table\n", 2036 __func__); 2037 return AH_FALSE; 2038 } 2039 2040 /* 2041 * Adjust XR power/rate up by 2 dB to account for greater peak 2042 * to avg ratio - except in newer avg power designs 2043 */ 2044 if (!IS_2413(ah) && !IS_5413(ah)) 2045 ahp->ah_ratesArray[15] += 4; 2046 /* 2047 * txPowerIndexOffset is set by the SetPowerTable() call - 2048 * adjust the rate table 2049 */ 2050 for (i = 0; i < N(ahp->ah_ratesArray); i++) { 2051 ahp->ah_ratesArray[i] += ahp->ah_txPowerIndexOffset; 2052 if (ahp->ah_ratesArray[i] > 63) 2053 ahp->ah_ratesArray[i] = 63; 2054 } 2055 2056 if (ee->ee_eepMap < 2) { 2057 /* 2058 * Correct gain deltas for 5212 G operation - 2059 * Removed with revised chipset 2060 */ 2061 if (AH_PRIVATE(ah)->ah_phyRev < AR_PHY_CHIP_ID_REV_2 && 2062 IEEE80211_IS_CHAN_G(chan)) { 2063 uint16_t cckOfdmPwrDelta; 2064 2065 if (freq == 2484) 2066 cckOfdmPwrDelta = SCALE_OC_DELTA( 2067 ee->ee_cckOfdmPwrDelta - 2068 ee->ee_scaledCh14FilterCckDelta); 2069 else 2070 cckOfdmPwrDelta = SCALE_OC_DELTA( 2071 ee->ee_cckOfdmPwrDelta); 2072 ar5212CorrectGainDelta(ah, cckOfdmPwrDelta); 2073 } 2074 /* 2075 * Finally, write the power values into the 2076 * baseband power table 2077 */ 2078 for (i = 0; i < (PWR_TABLE_SIZE/2); i++) { 2079 OS_REG_WRITE(ah, AR_PHY_PCDAC_TX_POWER(i), 2080 ((((ahp->ah_pcdacTable[2*i + 1] << 8) | 0xff) & 0xffff) << 16) 2081 | (((ahp->ah_pcdacTable[2*i] << 8) | 0xff) & 0xffff) 2082 ); 2083 } 2084 } 2085 2086 /* Write the OFDM power per rate set */ 2087 OS_REG_WRITE(ah, AR_PHY_POWER_TX_RATE1, 2088 POW_OFDM(ahp->ah_ratesArray[3], 24) 2089 | POW_OFDM(ahp->ah_ratesArray[2], 16) 2090 | POW_OFDM(ahp->ah_ratesArray[1], 8) 2091 | POW_OFDM(ahp->ah_ratesArray[0], 0) 2092 ); 2093 OS_REG_WRITE(ah, AR_PHY_POWER_TX_RATE2, 2094 POW_OFDM(ahp->ah_ratesArray[7], 24) 2095 | POW_OFDM(ahp->ah_ratesArray[6], 16) 2096 | POW_OFDM(ahp->ah_ratesArray[5], 8) 2097 | POW_OFDM(ahp->ah_ratesArray[4], 0) 2098 ); 2099 2100 /* Write the CCK power per rate set */ 2101 OS_REG_WRITE(ah, AR_PHY_POWER_TX_RATE3, 2102 POW_CCK(ahp->ah_ratesArray[10], 24) 2103 | POW_CCK(ahp->ah_ratesArray[9], 16) 2104 | POW_CCK(ahp->ah_ratesArray[15], 8) /* XR target power */ 2105 | POW_CCK(ahp->ah_ratesArray[8], 0) 2106 ); 2107 OS_REG_WRITE(ah, AR_PHY_POWER_TX_RATE4, 2108 POW_CCK(ahp->ah_ratesArray[14], 24) 2109 | POW_CCK(ahp->ah_ratesArray[13], 16) 2110 | POW_CCK(ahp->ah_ratesArray[12], 8) 2111 | POW_CCK(ahp->ah_ratesArray[11], 0) 2112 ); 2113 2114 /* 2115 * Set max power to 30 dBm and, optionally, 2116 * enable TPC in tx descriptors. 2117 */ 2118 OS_REG_WRITE(ah, AR_PHY_POWER_TX_RATE_MAX, MAX_RATE_POWER | 2119 (ahp->ah_tpcEnabled ? AR_PHY_POWER_TX_RATE_MAX_TPC_ENABLE : 0)); 2120 2121 return AH_TRUE; 2122 #undef N 2123 #undef POW_CCK 2124 #undef POW_OFDM 2125 } 2126 2127 /* 2128 * Sets the transmit power in the baseband for the given 2129 * operating channel and mode. 2130 */ 2131 static HAL_BOOL 2132 ar5212SetRateTable(struct ath_hal *ah, const struct ieee80211_channel *chan, 2133 int16_t tpcScaleReduction, int16_t powerLimit, HAL_BOOL commit, 2134 int16_t *pMinPower, int16_t *pMaxPower) 2135 { 2136 struct ath_hal_5212 *ahp = AH5212(ah); 2137 uint16_t freq = ath_hal_gethwchannel(ah, chan); 2138 const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom; 2139 uint16_t *rpow = ahp->ah_ratesArray; 2140 uint16_t twiceMaxEdgePower = MAX_RATE_POWER; 2141 uint16_t twiceMaxEdgePowerCck = MAX_RATE_POWER; 2142 uint16_t twiceMaxRDPower = MAX_RATE_POWER; 2143 int i; 2144 uint8_t cfgCtl; 2145 int8_t twiceAntennaGain, twiceAntennaReduction; 2146 const RD_EDGES_POWER *rep; 2147 TRGT_POWER_INFO targetPowerOfdm, targetPowerCck; 2148 int16_t scaledPower, maxAvailPower = 0; 2149 int16_t r13, r9, r7, r0; 2150 2151 HALASSERT(ah->ah_magic == AR5212_MAGIC); 2152 2153 twiceMaxRDPower = chan->ic_maxregpower * 2; 2154 *pMaxPower = -MAX_RATE_POWER; 2155 *pMinPower = MAX_RATE_POWER; 2156 2157 /* Get conformance test limit maximum for this channel */ 2158 cfgCtl = ath_hal_getctl(ah, chan); 2159 for (i = 0; i < ee->ee_numCtls; i++) { 2160 uint16_t twiceMinEdgePower; 2161 2162 if (ee->ee_ctl[i] == 0) 2163 continue; 2164 if (ee->ee_ctl[i] == cfgCtl || 2165 cfgCtl == ((ee->ee_ctl[i] & CTL_MODE_M) | SD_NO_CTL)) { 2166 rep = &ee->ee_rdEdgesPower[i * NUM_EDGES]; 2167 twiceMinEdgePower = ar5212GetMaxEdgePower(freq, rep); 2168 if ((cfgCtl & ~CTL_MODE_M) == SD_NO_CTL) { 2169 /* Find the minimum of all CTL edge powers that apply to this channel */ 2170 twiceMaxEdgePower = AH_MIN(twiceMaxEdgePower, twiceMinEdgePower); 2171 } else { 2172 twiceMaxEdgePower = twiceMinEdgePower; 2173 break; 2174 } 2175 } 2176 } 2177 2178 if (IEEE80211_IS_CHAN_G(chan)) { 2179 /* Check for a CCK CTL for 11G CCK powers */ 2180 cfgCtl = (cfgCtl & ~CTL_MODE_M) | CTL_11B; 2181 for (i = 0; i < ee->ee_numCtls; i++) { 2182 uint16_t twiceMinEdgePowerCck; 2183 2184 if (ee->ee_ctl[i] == 0) 2185 continue; 2186 if (ee->ee_ctl[i] == cfgCtl || 2187 cfgCtl == ((ee->ee_ctl[i] & CTL_MODE_M) | SD_NO_CTL)) { 2188 rep = &ee->ee_rdEdgesPower[i * NUM_EDGES]; 2189 twiceMinEdgePowerCck = ar5212GetMaxEdgePower(freq, rep); 2190 if ((cfgCtl & ~CTL_MODE_M) == SD_NO_CTL) { 2191 /* Find the minimum of all CTL edge powers that apply to this channel */ 2192 twiceMaxEdgePowerCck = AH_MIN(twiceMaxEdgePowerCck, twiceMinEdgePowerCck); 2193 } else { 2194 twiceMaxEdgePowerCck = twiceMinEdgePowerCck; 2195 break; 2196 } 2197 } 2198 } 2199 } else { 2200 /* Set the 11B cck edge power to the one found before */ 2201 twiceMaxEdgePowerCck = twiceMaxEdgePower; 2202 } 2203 2204 /* Get Antenna Gain reduction */ 2205 if (IEEE80211_IS_CHAN_5GHZ(chan)) { 2206 ath_hal_eepromGet(ah, AR_EEP_ANTGAINMAX_5, &twiceAntennaGain); 2207 } else { 2208 ath_hal_eepromGet(ah, AR_EEP_ANTGAINMAX_2, &twiceAntennaGain); 2209 } 2210 twiceAntennaReduction = 2211 ath_hal_getantennareduction(ah, chan, twiceAntennaGain); 2212 2213 if (IEEE80211_IS_CHAN_OFDM(chan)) { 2214 /* Get final OFDM target powers */ 2215 if (IEEE80211_IS_CHAN_2GHZ(chan)) { 2216 ar5212GetTargetPowers(ah, chan, ee->ee_trgtPwr_11g, 2217 ee->ee_numTargetPwr_11g, &targetPowerOfdm); 2218 } else { 2219 ar5212GetTargetPowers(ah, chan, ee->ee_trgtPwr_11a, 2220 ee->ee_numTargetPwr_11a, &targetPowerOfdm); 2221 } 2222 2223 /* Get Maximum OFDM power */ 2224 /* Minimum of target and edge powers */ 2225 scaledPower = AH_MIN(twiceMaxEdgePower, 2226 twiceMaxRDPower - twiceAntennaReduction); 2227 2228 /* 2229 * If turbo is set, reduce power to keep power 2230 * consumption under 2 Watts. Note that we always do 2231 * this unless specially configured. Then we limit 2232 * power only for non-AP operation. 2233 */ 2234 if (IEEE80211_IS_CHAN_TURBO(chan) 2235 #ifdef AH_ENABLE_AP_SUPPORT 2236 && AH_PRIVATE(ah)->ah_opmode != HAL_M_HOSTAP 2237 #endif 2238 ) { 2239 /* 2240 * If turbo is set, reduce power to keep power 2241 * consumption under 2 Watts 2242 */ 2243 if (ee->ee_version >= AR_EEPROM_VER3_1) 2244 scaledPower = AH_MIN(scaledPower, 2245 ee->ee_turbo2WMaxPower5); 2246 /* 2247 * EEPROM version 4.0 added an additional 2248 * constraint on 2.4GHz channels. 2249 */ 2250 if (ee->ee_version >= AR_EEPROM_VER4_0 && 2251 IEEE80211_IS_CHAN_2GHZ(chan)) 2252 scaledPower = AH_MIN(scaledPower, 2253 ee->ee_turbo2WMaxPower2); 2254 } 2255 2256 maxAvailPower = AH_MIN(scaledPower, 2257 targetPowerOfdm.twicePwr6_24); 2258 2259 /* Reduce power by max regulatory domain allowed restrictions */ 2260 scaledPower = maxAvailPower - (tpcScaleReduction * 2); 2261 scaledPower = (scaledPower < 0) ? 0 : scaledPower; 2262 scaledPower = AH_MIN(scaledPower, powerLimit); 2263 2264 if (commit) { 2265 /* Set OFDM rates 9, 12, 18, 24 */ 2266 r0 = rpow[0] = rpow[1] = rpow[2] = rpow[3] = rpow[4] = scaledPower; 2267 2268 /* Set OFDM rates 36, 48, 54, XR */ 2269 rpow[5] = AH_MIN(rpow[0], targetPowerOfdm.twicePwr36); 2270 rpow[6] = AH_MIN(rpow[0], targetPowerOfdm.twicePwr48); 2271 r7 = rpow[7] = AH_MIN(rpow[0], targetPowerOfdm.twicePwr54); 2272 2273 if (ee->ee_version >= AR_EEPROM_VER4_0) { 2274 /* Setup XR target power from EEPROM */ 2275 rpow[15] = AH_MIN(scaledPower, IEEE80211_IS_CHAN_2GHZ(chan) ? 2276 ee->ee_xrTargetPower2 : ee->ee_xrTargetPower5); 2277 } else { 2278 /* XR uses 6mb power */ 2279 rpow[15] = rpow[0]; 2280 } 2281 ahp->ah_ofdmTxPower = *pMaxPower; 2282 2283 } else { 2284 r0 = scaledPower; 2285 r7 = AH_MIN(r0, targetPowerOfdm.twicePwr54); 2286 } 2287 *pMinPower = r7; 2288 *pMaxPower = r0; 2289 2290 HALDEBUG(ah, HAL_DEBUG_RFPARAM, 2291 "%s: MaxRD: %d TurboMax: %d MaxCTL: %d " 2292 "TPC_Reduction %d chan=%d (0x%x) maxAvailPower=%d pwr6_24=%d, maxPower=%d\n", 2293 __func__, twiceMaxRDPower, ee->ee_turbo2WMaxPower5, 2294 twiceMaxEdgePower, tpcScaleReduction * 2, 2295 chan->ic_freq, chan->ic_flags, 2296 maxAvailPower, targetPowerOfdm.twicePwr6_24, *pMaxPower); 2297 } 2298 2299 if (IEEE80211_IS_CHAN_CCK(chan)) { 2300 /* Get final CCK target powers */ 2301 ar5212GetTargetPowers(ah, chan, ee->ee_trgtPwr_11b, 2302 ee->ee_numTargetPwr_11b, &targetPowerCck); 2303 2304 /* Reduce power by max regulatory domain allowed restrictions */ 2305 scaledPower = AH_MIN(twiceMaxEdgePowerCck, 2306 twiceMaxRDPower - twiceAntennaReduction); 2307 if (maxAvailPower < AH_MIN(scaledPower, targetPowerCck.twicePwr6_24)) 2308 maxAvailPower = AH_MIN(scaledPower, targetPowerCck.twicePwr6_24); 2309 2310 /* Reduce power by user selection */ 2311 scaledPower = AH_MIN(scaledPower, targetPowerCck.twicePwr6_24) - (tpcScaleReduction * 2); 2312 scaledPower = (scaledPower < 0) ? 0 : scaledPower; 2313 scaledPower = AH_MIN(scaledPower, powerLimit); 2314 2315 if (commit) { 2316 /* Set CCK rates 2L, 2S, 5.5L, 5.5S, 11L, 11S */ 2317 rpow[8] = AH_MIN(scaledPower, targetPowerCck.twicePwr6_24); 2318 r9 = rpow[9] = AH_MIN(scaledPower, targetPowerCck.twicePwr36); 2319 rpow[10] = rpow[9]; 2320 rpow[11] = AH_MIN(scaledPower, targetPowerCck.twicePwr48); 2321 rpow[12] = rpow[11]; 2322 r13 = rpow[13] = AH_MIN(scaledPower, targetPowerCck.twicePwr54); 2323 rpow[14] = rpow[13]; 2324 } else { 2325 r9 = AH_MIN(scaledPower, targetPowerCck.twicePwr36); 2326 r13 = AH_MIN(scaledPower, targetPowerCck.twicePwr54); 2327 } 2328 2329 /* Set min/max power based off OFDM values or initialization */ 2330 if (r13 < *pMinPower) 2331 *pMinPower = r13; 2332 if (r9 > *pMaxPower) 2333 *pMaxPower = r9; 2334 2335 HALDEBUG(ah, HAL_DEBUG_RFPARAM, 2336 "%s: cck: MaxRD: %d MaxCTL: %d " 2337 "TPC_Reduction %d chan=%d (0x%x) maxAvailPower=%d pwr6_24=%d, maxPower=%d\n", 2338 __func__, twiceMaxRDPower, twiceMaxEdgePowerCck, 2339 tpcScaleReduction * 2, chan->ic_freq, chan->ic_flags, 2340 maxAvailPower, targetPowerCck.twicePwr6_24, *pMaxPower); 2341 } 2342 if (commit) { 2343 ahp->ah_tx6PowerInHalfDbm = *pMaxPower; 2344 AH_PRIVATE(ah)->ah_maxPowerLevel = ahp->ah_tx6PowerInHalfDbm; 2345 } 2346 return AH_TRUE; 2347 } 2348 2349 HAL_BOOL 2350 ar5212GetChipPowerLimits(struct ath_hal *ah, struct ieee80211_channel *chan) 2351 { 2352 struct ath_hal_5212 *ahp = AH5212(ah); 2353 #if 0 2354 static const uint16_t tpcScaleReductionTable[5] = 2355 { 0, 3, 6, 9, MAX_RATE_POWER }; 2356 int16_t tpcInDb, powerLimit; 2357 #endif 2358 int16_t minPower, maxPower; 2359 2360 /* 2361 * Get Pier table max and min powers. 2362 */ 2363 if (ahp->ah_rfHal->getChannelMaxMinPower(ah, chan, &maxPower, &minPower)) { 2364 /* NB: rf code returns 1/4 dBm units, convert */ 2365 chan->ic_maxpower = maxPower / 2; 2366 chan->ic_minpower = minPower / 2; 2367 } else { 2368 HALDEBUG(ah, HAL_DEBUG_ANY, 2369 "%s: no min/max power for %u/0x%x\n", 2370 __func__, chan->ic_freq, chan->ic_flags); 2371 chan->ic_maxpower = MAX_RATE_POWER; 2372 chan->ic_minpower = 0; 2373 } 2374 #if 0 2375 /* 2376 * Now adjust to reflect any global scale and/or CTL's. 2377 * (XXX is that correct?) 2378 */ 2379 powerLimit = AH_MIN(MAX_RATE_POWER, AH_PRIVATE(ah)->ah_powerLimit); 2380 if (powerLimit >= MAX_RATE_POWER || powerLimit == 0) 2381 tpcInDb = tpcScaleReductionTable[AH_PRIVATE(ah)->ah_tpScale]; 2382 else 2383 tpcInDb = 0; 2384 if (!ar5212SetRateTable(ah, chan, tpcInDb, powerLimit, 2385 AH_FALSE, &minPower, &maxPower)) { 2386 HALDEBUG(ah, HAL_DEBUG_ANY, 2387 "%s: unable to find max/min power\n",__func__); 2388 return AH_FALSE; 2389 } 2390 if (maxPower < chan->ic_maxpower) 2391 chan->ic_maxpower = maxPower; 2392 if (minPower < chan->ic_minpower) 2393 chan->ic_minpower = minPower; 2394 HALDEBUG(ah, HAL_DEBUG_RESET, 2395 "Chan %d: MaxPow = %d MinPow = %d\n", 2396 chan->ic_freq, chan->ic_maxpower, chans->ic_minpower); 2397 #endif 2398 return AH_TRUE; 2399 } 2400 2401 /* 2402 * Correct for the gain-delta between ofdm and cck mode target 2403 * powers. Write the results to the rate table and the power table. 2404 * 2405 * Conventions : 2406 * 1. rpow[ii] is the integer value of 2*(desired power 2407 * for the rate ii in dBm) to provide 0.5dB resolution. rate 2408 * mapping is as following : 2409 * [0..7] --> ofdm 6, 9, .. 48, 54 2410 * [8..14] --> cck 1L, 2L, 2S, .. 11L, 11S 2411 * [15] --> XR (all rates get the same power) 2412 * 2. powv[ii] is the pcdac corresponding to ii/2 dBm. 2413 */ 2414 static void 2415 ar5212CorrectGainDelta(struct ath_hal *ah, int twiceOfdmCckDelta) 2416 { 2417 #define N(_a) (sizeof(_a) / sizeof(_a[0])) 2418 struct ath_hal_5212 *ahp = AH5212(ah); 2419 const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom; 2420 int16_t ratesIndex[N(ahp->ah_ratesArray)]; 2421 uint16_t ii, jj, iter; 2422 int32_t cckIndex; 2423 int16_t gainDeltaAdjust; 2424 2425 HALASSERT(ah->ah_magic == AR5212_MAGIC); 2426 2427 gainDeltaAdjust = ee->ee_cckOfdmGainDelta; 2428 2429 /* make a local copy of desired powers as initial indices */ 2430 OS_MEMCPY(ratesIndex, ahp->ah_ratesArray, sizeof(ratesIndex)); 2431 2432 /* fix only the CCK indices */ 2433 for (ii = 8; ii < 15; ii++) { 2434 /* apply a gain_delta correction of -15 for CCK */ 2435 ratesIndex[ii] -= gainDeltaAdjust; 2436 2437 /* Now check for contention with all ofdm target powers */ 2438 jj = 0; 2439 iter = 0; 2440 /* indicates not all ofdm rates checked forcontention yet */ 2441 while (jj < 16) { 2442 if (ratesIndex[ii] < 0) 2443 ratesIndex[ii] = 0; 2444 if (jj == 8) { /* skip CCK rates */ 2445 jj = 15; 2446 continue; 2447 } 2448 if (ratesIndex[ii] == ahp->ah_ratesArray[jj]) { 2449 if (ahp->ah_ratesArray[jj] == 0) 2450 ratesIndex[ii]++; 2451 else if (iter > 50) { 2452 /* 2453 * To avoid pathological case of of 2454 * dm target powers 0 and 0.5dBm 2455 */ 2456 ratesIndex[ii]++; 2457 } else 2458 ratesIndex[ii]--; 2459 /* check with all rates again */ 2460 jj = 0; 2461 iter++; 2462 } else 2463 jj++; 2464 } 2465 if (ratesIndex[ii] >= PWR_TABLE_SIZE) 2466 ratesIndex[ii] = PWR_TABLE_SIZE -1; 2467 cckIndex = ahp->ah_ratesArray[ii] - twiceOfdmCckDelta; 2468 if (cckIndex < 0) 2469 cckIndex = 0; 2470 2471 /* 2472 * Validate that the indexes for the powv are not 2473 * out of bounds. 2474 */ 2475 HALASSERT(cckIndex < PWR_TABLE_SIZE); 2476 HALASSERT(ratesIndex[ii] < PWR_TABLE_SIZE); 2477 ahp->ah_pcdacTable[ratesIndex[ii]] = 2478 ahp->ah_pcdacTable[cckIndex]; 2479 } 2480 /* Override rate per power table with new values */ 2481 for (ii = 8; ii < 15; ii++) 2482 ahp->ah_ratesArray[ii] = ratesIndex[ii]; 2483 #undef N 2484 } 2485 2486 /* 2487 * Find the maximum conformance test limit for the given channel and CTL info 2488 */ 2489 static uint16_t 2490 ar5212GetMaxEdgePower(uint16_t channel, const RD_EDGES_POWER *pRdEdgesPower) 2491 { 2492 /* temp array for holding edge channels */ 2493 uint16_t tempChannelList[NUM_EDGES]; 2494 uint16_t clo, chi, twiceMaxEdgePower; 2495 int i, numEdges; 2496 2497 /* Get the edge power */ 2498 for (i = 0; i < NUM_EDGES; i++) { 2499 if (pRdEdgesPower[i].rdEdge == 0) 2500 break; 2501 tempChannelList[i] = pRdEdgesPower[i].rdEdge; 2502 } 2503 numEdges = i; 2504 2505 ar5212GetLowerUpperValues(channel, tempChannelList, 2506 numEdges, &clo, &chi); 2507 /* Get the index for the lower channel */ 2508 for (i = 0; i < numEdges && clo != tempChannelList[i]; i++) 2509 ; 2510 /* Is lower channel ever outside the rdEdge? */ 2511 HALASSERT(i != numEdges); 2512 2513 if ((clo == chi && clo == channel) || (pRdEdgesPower[i].flag)) { 2514 /* 2515 * If there's an exact channel match or an inband flag set 2516 * on the lower channel use the given rdEdgePower 2517 */ 2518 twiceMaxEdgePower = pRdEdgesPower[i].twice_rdEdgePower; 2519 HALASSERT(twiceMaxEdgePower > 0); 2520 } else 2521 twiceMaxEdgePower = MAX_RATE_POWER; 2522 return twiceMaxEdgePower; 2523 } 2524 2525 /* 2526 * Returns interpolated or the scaled up interpolated value 2527 */ 2528 static uint16_t 2529 interpolate(uint16_t target, uint16_t srcLeft, uint16_t srcRight, 2530 uint16_t targetLeft, uint16_t targetRight) 2531 { 2532 uint16_t rv; 2533 int16_t lRatio; 2534 2535 /* to get an accurate ratio, always scale, if want to scale, then don't scale back down */ 2536 if ((targetLeft * targetRight) == 0) 2537 return 0; 2538 2539 if (srcRight != srcLeft) { 2540 /* 2541 * Note the ratio always need to be scaled, 2542 * since it will be a fraction. 2543 */ 2544 lRatio = (target - srcLeft) * EEP_SCALE / (srcRight - srcLeft); 2545 if (lRatio < 0) { 2546 /* Return as Left target if value would be negative */ 2547 rv = targetLeft; 2548 } else if (lRatio > EEP_SCALE) { 2549 /* Return as Right target if Ratio is greater than 100% (SCALE) */ 2550 rv = targetRight; 2551 } else { 2552 rv = (lRatio * targetRight + (EEP_SCALE - lRatio) * 2553 targetLeft) / EEP_SCALE; 2554 } 2555 } else { 2556 rv = targetLeft; 2557 } 2558 return rv; 2559 } 2560 2561 /* 2562 * Return the four rates of target power for the given target power table 2563 * channel, and number of channels 2564 */ 2565 static void 2566 ar5212GetTargetPowers(struct ath_hal *ah, const struct ieee80211_channel *chan, 2567 const TRGT_POWER_INFO *powInfo, 2568 uint16_t numChannels, TRGT_POWER_INFO *pNewPower) 2569 { 2570 uint16_t freq = ath_hal_gethwchannel(ah, chan); 2571 /* temp array for holding target power channels */ 2572 uint16_t tempChannelList[NUM_TEST_FREQUENCIES]; 2573 uint16_t clo, chi, ixlo, ixhi; 2574 int i; 2575 2576 /* Copy the target powers into the temp channel list */ 2577 for (i = 0; i < numChannels; i++) 2578 tempChannelList[i] = powInfo[i].testChannel; 2579 2580 ar5212GetLowerUpperValues(freq, tempChannelList, 2581 numChannels, &clo, &chi); 2582 2583 /* Get the indices for the channel */ 2584 ixlo = ixhi = 0; 2585 for (i = 0; i < numChannels; i++) { 2586 if (clo == tempChannelList[i]) { 2587 ixlo = i; 2588 } 2589 if (chi == tempChannelList[i]) { 2590 ixhi = i; 2591 break; 2592 } 2593 } 2594 2595 /* 2596 * Get the lower and upper channels, target powers, 2597 * and interpolate between them. 2598 */ 2599 pNewPower->twicePwr6_24 = interpolate(freq, clo, chi, 2600 powInfo[ixlo].twicePwr6_24, powInfo[ixhi].twicePwr6_24); 2601 pNewPower->twicePwr36 = interpolate(freq, clo, chi, 2602 powInfo[ixlo].twicePwr36, powInfo[ixhi].twicePwr36); 2603 pNewPower->twicePwr48 = interpolate(freq, clo, chi, 2604 powInfo[ixlo].twicePwr48, powInfo[ixhi].twicePwr48); 2605 pNewPower->twicePwr54 = interpolate(freq, clo, chi, 2606 powInfo[ixlo].twicePwr54, powInfo[ixhi].twicePwr54); 2607 } 2608 2609 static uint32_t 2610 udiff(uint32_t u, uint32_t v) 2611 { 2612 return (u >= v ? u - v : v - u); 2613 } 2614 2615 /* 2616 * Search a list for a specified value v that is within 2617 * EEP_DELTA of the search values. Return the closest 2618 * values in the list above and below the desired value. 2619 * EEP_DELTA is a factional value; everything is scaled 2620 * so only integer arithmetic is used. 2621 * 2622 * NB: the input list is assumed to be sorted in ascending order 2623 */ 2624 void 2625 ar5212GetLowerUpperValues(uint16_t v, uint16_t *lp, uint16_t listSize, 2626 uint16_t *vlo, uint16_t *vhi) 2627 { 2628 uint32_t target = v * EEP_SCALE; 2629 uint16_t *ep = lp+listSize; 2630 2631 /* 2632 * Check first and last elements for out-of-bounds conditions. 2633 */ 2634 if (target < (uint32_t)(lp[0] * EEP_SCALE - EEP_DELTA)) { 2635 *vlo = *vhi = lp[0]; 2636 return; 2637 } 2638 if (target > (uint32_t)(ep[-1] * EEP_SCALE + EEP_DELTA)) { 2639 *vlo = *vhi = ep[-1]; 2640 return; 2641 } 2642 2643 /* look for value being near or between 2 values in list */ 2644 for (; lp < ep; lp++) { 2645 /* 2646 * If value is close to the current value of the list 2647 * then target is not between values, it is one of the values 2648 */ 2649 if (udiff(lp[0] * EEP_SCALE, target) < EEP_DELTA) { 2650 *vlo = *vhi = lp[0]; 2651 return; 2652 } 2653 /* 2654 * Look for value being between current value and next value 2655 * if so return these 2 values 2656 */ 2657 if (target < (uint32_t)(lp[1] * EEP_SCALE - EEP_DELTA)) { 2658 *vlo = lp[0]; 2659 *vhi = lp[1]; 2660 return; 2661 } 2662 } 2663 HALASSERT(AH_FALSE); /* should not reach here */ 2664 } 2665 2666 /* 2667 * Perform analog "swizzling" of parameters into their location 2668 * 2669 * NB: used by RF backends 2670 */ 2671 void 2672 ar5212ModifyRfBuffer(uint32_t *rfBuf, uint32_t reg32, uint32_t numBits, 2673 uint32_t firstBit, uint32_t column) 2674 { 2675 #define MAX_ANALOG_START 319 /* XXX */ 2676 uint32_t tmp32, mask, arrayEntry, lastBit; 2677 int32_t bitPosition, bitsLeft; 2678 2679 HALASSERT(column <= 3); 2680 HALASSERT(numBits <= 32); 2681 HALASSERT(firstBit + numBits <= MAX_ANALOG_START); 2682 2683 tmp32 = ath_hal_reverseBits(reg32, numBits); 2684 arrayEntry = (firstBit - 1) / 8; 2685 bitPosition = (firstBit - 1) % 8; 2686 bitsLeft = numBits; 2687 while (bitsLeft > 0) { 2688 lastBit = (bitPosition + bitsLeft > 8) ? 2689 8 : bitPosition + bitsLeft; 2690 mask = (((1 << lastBit) - 1) ^ ((1 << bitPosition) - 1)) << 2691 (column * 8); 2692 rfBuf[arrayEntry] &= ~mask; 2693 rfBuf[arrayEntry] |= ((tmp32 << bitPosition) << 2694 (column * 8)) & mask; 2695 bitsLeft -= 8 - bitPosition; 2696 tmp32 = tmp32 >> (8 - bitPosition); 2697 bitPosition = 0; 2698 arrayEntry++; 2699 } 2700 #undef MAX_ANALOG_START 2701 } 2702 2703 /* 2704 * Sets the rate to duration values in MAC - used for multi- 2705 * rate retry. 2706 * The rate duration table needs to cover all valid rate codes; 2707 * the 11g table covers all ofdm rates, while the 11b table 2708 * covers all cck rates => all valid rates get covered between 2709 * these two mode's ratetables! 2710 * But if we're turbo, the ofdm phy is replaced by the turbo phy 2711 * and cck is not valid with turbo => all rates get covered 2712 * by the turbo ratetable only 2713 */ 2714 void 2715 ar5212SetRateDurationTable(struct ath_hal *ah, 2716 const struct ieee80211_channel *chan) 2717 { 2718 const HAL_RATE_TABLE *rt; 2719 int i; 2720 2721 /* NB: band doesn't matter for 1/2 and 1/4 rate */ 2722 if (IEEE80211_IS_CHAN_HALF(chan)) { 2723 rt = ar5212GetRateTable(ah, HAL_MODE_11A_HALF_RATE); 2724 } else if (IEEE80211_IS_CHAN_QUARTER(chan)) { 2725 rt = ar5212GetRateTable(ah, HAL_MODE_11A_QUARTER_RATE); 2726 } else { 2727 rt = ar5212GetRateTable(ah, 2728 IEEE80211_IS_CHAN_TURBO(chan) ? HAL_MODE_TURBO : HAL_MODE_11G); 2729 } 2730 2731 for (i = 0; i < rt->rateCount; ++i) 2732 OS_REG_WRITE(ah, 2733 AR_RATE_DURATION(rt->info[i].rateCode), 2734 ath_hal_computetxtime(ah, rt, 2735 WLAN_CTRL_FRAME_SIZE, 2736 rt->info[i].controlRate, AH_FALSE, AH_TRUE)); 2737 if (!IEEE80211_IS_CHAN_TURBO(chan)) { 2738 /* 11g Table is used to cover the CCK rates. */ 2739 rt = ar5212GetRateTable(ah, HAL_MODE_11G); 2740 for (i = 0; i < rt->rateCount; ++i) { 2741 uint32_t reg = AR_RATE_DURATION(rt->info[i].rateCode); 2742 2743 if (rt->info[i].phy != IEEE80211_T_CCK) 2744 continue; 2745 2746 OS_REG_WRITE(ah, reg, 2747 ath_hal_computetxtime(ah, rt, 2748 WLAN_CTRL_FRAME_SIZE, 2749 rt->info[i].controlRate, AH_FALSE, 2750 AH_TRUE)); 2751 /* cck rates have short preamble option also */ 2752 if (rt->info[i].shortPreamble) { 2753 reg += rt->info[i].shortPreamble << 2; 2754 OS_REG_WRITE(ah, reg, 2755 ath_hal_computetxtime(ah, rt, 2756 WLAN_CTRL_FRAME_SIZE, 2757 rt->info[i].controlRate, 2758 AH_TRUE, AH_TRUE)); 2759 } 2760 } 2761 } 2762 } 2763 2764 /* Adjust various register settings based on half/quarter rate clock setting. 2765 * This includes: +USEC, TX/RX latency, 2766 * + IFS params: slot, eifs, misc etc. 2767 */ 2768 void 2769 ar5212SetIFSTiming(struct ath_hal *ah, const struct ieee80211_channel *chan) 2770 { 2771 uint32_t txLat, rxLat, usec, slot, refClock, eifs, init_usec; 2772 2773 HALASSERT(IEEE80211_IS_CHAN_HALF(chan) || 2774 IEEE80211_IS_CHAN_QUARTER(chan)); 2775 2776 refClock = OS_REG_READ(ah, AR_USEC) & AR_USEC_USEC32; 2777 if (IEEE80211_IS_CHAN_HALF(chan)) { 2778 slot = IFS_SLOT_HALF_RATE; 2779 rxLat = RX_NON_FULL_RATE_LATENCY << AR5212_USEC_RX_LAT_S; 2780 txLat = TX_HALF_RATE_LATENCY << AR5212_USEC_TX_LAT_S; 2781 usec = HALF_RATE_USEC; 2782 eifs = IFS_EIFS_HALF_RATE; 2783 init_usec = INIT_USEC >> 1; 2784 } else { /* quarter rate */ 2785 slot = IFS_SLOT_QUARTER_RATE; 2786 rxLat = RX_NON_FULL_RATE_LATENCY << AR5212_USEC_RX_LAT_S; 2787 txLat = TX_QUARTER_RATE_LATENCY << AR5212_USEC_TX_LAT_S; 2788 usec = QUARTER_RATE_USEC; 2789 eifs = IFS_EIFS_QUARTER_RATE; 2790 init_usec = INIT_USEC >> 2; 2791 } 2792 2793 OS_REG_WRITE(ah, AR_USEC, (usec | refClock | txLat | rxLat)); 2794 OS_REG_WRITE(ah, AR_D_GBL_IFS_SLOT, slot); 2795 OS_REG_WRITE(ah, AR_D_GBL_IFS_EIFS, eifs); 2796 OS_REG_RMW_FIELD(ah, AR_D_GBL_IFS_MISC, 2797 AR_D_GBL_IFS_MISC_USEC_DURATION, init_usec); 2798 } 2799