ar5210_reset.c revision 1.2
1 /* 2 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting 3 * Copyright (c) 2002-2004 Atheros Communications, Inc. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 * 17 * $Id: ar5210_reset.c,v 1.2 2008/12/11 05:30:29 alc Exp $ 18 */ 19 #include "opt_ah.h" 20 21 #include "ah.h" 22 #include "ah_internal.h" 23 24 #include "ar5210/ar5210.h" 25 #include "ar5210/ar5210reg.h" 26 #include "ar5210/ar5210phy.h" 27 28 #include "ah_eeprom_v1.h" 29 30 typedef struct { 31 uint32_t Offset; 32 uint32_t Value; 33 } REGISTER_VAL; 34 35 static const REGISTER_VAL ar5k0007_init[] = { 36 #include "ar5210/ar5k_0007.ini" 37 }; 38 39 /* Default Power Settings for channels outside of EEPROM range */ 40 static const uint8_t ar5k0007_pwrSettings[17] = { 41 /* gain delta pc dac */ 42 /* 54 48 36 24 18 12 9 54 48 36 24 18 12 9 6 ob db */ 43 9, 9, 0, 0, 0, 0, 0, 2, 2, 6, 6, 6, 6, 6, 6, 2, 2 44 }; 45 46 /* 47 * The delay, in usecs, between writing AR_RC with a reset 48 * request and waiting for the chip to settle. If this is 49 * too short then the chip does not come out of sleep state. 50 * Note this value was empirically derived and may be dependent 51 * on the host machine (don't know--the problem was identified 52 * on an IBM 570e laptop; 10us delays worked on other systems). 53 */ 54 #define AR_RC_SETTLE_TIME 20000 55 56 static HAL_BOOL ar5210SetResetReg(struct ath_hal *, 57 uint32_t resetMask, u_int waitTime); 58 static HAL_BOOL ar5210SetChannel(struct ath_hal *, HAL_CHANNEL_INTERNAL *); 59 static void ar5210SetOperatingMode(struct ath_hal *, int opmode); 60 61 /* 62 * Places the device in and out of reset and then places sane 63 * values in the registers based on EEPROM config, initialization 64 * vectors (as determined by the mode), and station configuration 65 * 66 * bChannelChange is used to preserve DMA/PCU registers across 67 * a HW Reset during channel change. 68 */ 69 HAL_BOOL 70 ar5210Reset(struct ath_hal *ah, HAL_OPMODE opmode, 71 HAL_CHANNEL *chan, HAL_BOOL bChannelChange, HAL_STATUS *status) 72 { 73 #define N(a) (sizeof (a) /sizeof (a[0])) 74 #define FAIL(_code) do { ecode = _code; goto bad; } while (0) 75 struct ath_hal_5210 *ahp = AH5210(ah); 76 const HAL_EEPROM_v1 *ee = AH_PRIVATE(ah)->ah_eeprom; 77 HAL_CHANNEL_INTERNAL *ichan; 78 HAL_STATUS ecode; 79 uint32_t ledstate; 80 int i, q; 81 82 HALDEBUG(ah, HAL_DEBUG_RESET, 83 "%s: opmode %u channel %u/0x%x %s channel\n", __func__, 84 opmode, chan->channel, chan->channelFlags, 85 bChannelChange ? "change" : "same"); 86 87 if ((chan->channelFlags & CHANNEL_5GHZ) == 0) { 88 /* Only 11a mode */ 89 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: channel not 5Ghz\n", __func__); 90 FAIL(HAL_EINVAL); 91 } 92 /* 93 * Map public channel to private. 94 */ 95 ichan = ath_hal_checkchannel(ah, chan); 96 if (ichan == AH_NULL) { 97 HALDEBUG(ah, HAL_DEBUG_ANY, 98 "%s: invalid channel %u/0x%x; no mapping\n", 99 __func__, chan->channel, chan->channelFlags); 100 FAIL(HAL_EINVAL); 101 } 102 switch (opmode) { 103 case HAL_M_STA: 104 case HAL_M_IBSS: 105 case HAL_M_HOSTAP: 106 case HAL_M_MONITOR: 107 break; 108 default: 109 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid operating mode %u\n", 110 __func__, opmode); 111 FAIL(HAL_EINVAL); 112 break; 113 } 114 115 ledstate = OS_REG_READ(ah, AR_PCICFG) & 116 (AR_PCICFG_LED_PEND | AR_PCICFG_LED_ACT); 117 118 if (!ar5210ChipReset(ah, chan)) { 119 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: chip reset failed\n", 120 __func__); 121 FAIL(HAL_EIO); 122 } 123 124 OS_REG_WRITE(ah, AR_STA_ID0, LE_READ_4(ahp->ah_macaddr)); 125 OS_REG_WRITE(ah, AR_STA_ID1, LE_READ_2(ahp->ah_macaddr + 4)); 126 ar5210SetOperatingMode(ah, opmode); 127 128 switch (opmode) { 129 case HAL_M_HOSTAP: 130 OS_REG_WRITE(ah, AR_BCR, INIT_BCON_CNTRL_REG); 131 OS_REG_WRITE(ah, AR_PCICFG, 132 AR_PCICFG_LED_ACT | AR_PCICFG_LED_BCTL); 133 break; 134 case HAL_M_IBSS: 135 OS_REG_WRITE(ah, AR_BCR, INIT_BCON_CNTRL_REG | AR_BCR_BCMD); 136 OS_REG_WRITE(ah, AR_PCICFG, 137 AR_PCICFG_CLKRUNEN | AR_PCICFG_LED_PEND | AR_PCICFG_LED_BCTL); 138 break; 139 case HAL_M_STA: 140 OS_REG_WRITE(ah, AR_BCR, INIT_BCON_CNTRL_REG); 141 OS_REG_WRITE(ah, AR_PCICFG, 142 AR_PCICFG_CLKRUNEN | AR_PCICFG_LED_PEND | AR_PCICFG_LED_BCTL); 143 break; 144 case HAL_M_MONITOR: 145 OS_REG_WRITE(ah, AR_BCR, INIT_BCON_CNTRL_REG); 146 OS_REG_WRITE(ah, AR_PCICFG, 147 AR_PCICFG_LED_ACT | AR_PCICFG_LED_BCTL); 148 break; 149 } 150 151 /* Restore previous led state */ 152 OS_REG_WRITE(ah, AR_PCICFG, OS_REG_READ(ah, AR_PCICFG) | ledstate); 153 154 OS_REG_WRITE(ah, AR_BSS_ID0, LE_READ_4(ahp->ah_bssid)); 155 OS_REG_WRITE(ah, AR_BSS_ID1, LE_READ_2(ahp->ah_bssid + 4)); 156 157 OS_REG_WRITE(ah, AR_TXDP0, 0); 158 OS_REG_WRITE(ah, AR_TXDP1, 0); 159 OS_REG_WRITE(ah, AR_RXDP, 0); 160 161 /* 162 * Initialize interrupt state. 163 */ 164 (void) OS_REG_READ(ah, AR_ISR); /* cleared on read */ 165 OS_REG_WRITE(ah, AR_IMR, 0); 166 OS_REG_WRITE(ah, AR_IER, AR_IER_DISABLE); 167 ahp->ah_maskReg = 0; 168 169 (void) OS_REG_READ(ah, AR_BSR); /* cleared on read */ 170 OS_REG_WRITE(ah, AR_TXCFG, AR_DMASIZE_128B); 171 OS_REG_WRITE(ah, AR_RXCFG, AR_DMASIZE_128B); 172 173 OS_REG_WRITE(ah, AR_TOPS, 8); /* timeout prescale */ 174 OS_REG_WRITE(ah, AR_RXNOFRM, 8); /* RX no frame timeout */ 175 OS_REG_WRITE(ah, AR_RPGTO, 0); /* RX frame gap timeout */ 176 OS_REG_WRITE(ah, AR_TXNOFRM, 0); /* TX no frame timeout */ 177 178 OS_REG_WRITE(ah, AR_SFR, 0); 179 OS_REG_WRITE(ah, AR_MIBC, 0); /* unfreeze ctrs + clr state */ 180 OS_REG_WRITE(ah, AR_RSSI_THR, ahp->ah_rssiThr); 181 OS_REG_WRITE(ah, AR_CFP_DUR, 0); 182 183 ar5210SetRxFilter(ah, 0); /* nothing for now */ 184 OS_REG_WRITE(ah, AR_MCAST_FIL0, 0); /* multicast filter */ 185 OS_REG_WRITE(ah, AR_MCAST_FIL1, 0); /* XXX was 2 */ 186 187 OS_REG_WRITE(ah, AR_TX_MASK0, 0); 188 OS_REG_WRITE(ah, AR_TX_MASK1, 0); 189 OS_REG_WRITE(ah, AR_CLR_TMASK, 1); 190 OS_REG_WRITE(ah, AR_TRIG_LEV, 1); /* minimum */ 191 192 OS_REG_WRITE(ah, AR_DIAG_SW, 0); 193 194 OS_REG_WRITE(ah, AR_CFP_PERIOD, 0); 195 OS_REG_WRITE(ah, AR_TIMER0, 0); /* next beacon time */ 196 OS_REG_WRITE(ah, AR_TSF_L32, 0); /* local clock */ 197 OS_REG_WRITE(ah, AR_TIMER1, ~0); /* next DMA beacon alert */ 198 OS_REG_WRITE(ah, AR_TIMER2, ~0); /* next SW beacon alert */ 199 OS_REG_WRITE(ah, AR_TIMER3, 1); /* next ATIM window */ 200 201 /* Write the INI values for PHYreg initialization */ 202 for (i = 0; i < N(ar5k0007_init); i++) { 203 uint32_t reg = ar5k0007_init[i].Offset; 204 /* On channel change, don't reset the PCU registers */ 205 if (!(bChannelChange && (0x8000 <= reg && reg < 0x9000))) 206 OS_REG_WRITE(ah, reg, ar5k0007_init[i].Value); 207 } 208 209 /* Setup the transmit power values for cards since 0x0[0-2]05 */ 210 if (!ar5210SetTransmitPower(ah, chan)) { 211 HALDEBUG(ah, HAL_DEBUG_ANY, 212 "%s: error init'ing transmit power\n", __func__); 213 FAIL(HAL_EIO); 214 } 215 216 OS_REG_WRITE(ah, AR_PHY(10), 217 (OS_REG_READ(ah, AR_PHY(10)) & 0xFFFF00FF) | 218 (ee->ee_xlnaOn << 8)); 219 OS_REG_WRITE(ah, AR_PHY(13), 220 (ee->ee_xpaOff << 24) | (ee->ee_xpaOff << 16) | 221 (ee->ee_xpaOn << 8) | ee->ee_xpaOn); 222 OS_REG_WRITE(ah, AR_PHY(17), 223 (OS_REG_READ(ah, AR_PHY(17)) & 0xFFFFC07F) | 224 ((ee->ee_antenna >> 1) & 0x3F80)); 225 OS_REG_WRITE(ah, AR_PHY(18), 226 (OS_REG_READ(ah, AR_PHY(18)) & 0xFFFC0FFF) | 227 ((ee->ee_antenna << 10) & 0x3F000)); 228 OS_REG_WRITE(ah, AR_PHY(25), 229 (OS_REG_READ(ah, AR_PHY(25)) & 0xFFF80FFF) | 230 ((ee->ee_thresh62 << 12) & 0x7F000)); 231 OS_REG_WRITE(ah, AR_PHY(68), 232 (OS_REG_READ(ah, AR_PHY(68)) & 0xFFFFFFFC) | 233 (ee->ee_antenna & 0x3)); 234 235 if (!ar5210SetChannel(ah, ichan)) { 236 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unable to set channel\n", 237 __func__); 238 FAIL(HAL_EIO); 239 } 240 if (bChannelChange) { 241 if (!(ichan->privFlags & CHANNEL_DFS)) 242 ichan->privFlags &= ~CHANNEL_INTERFERENCE; 243 chan->channelFlags = ichan->channelFlags; 244 chan->privFlags = ichan->privFlags; 245 } 246 247 /* Activate the PHY */ 248 OS_REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ENABLE); 249 250 OS_DELAY(1000); /* Wait a bit (1 msec) */ 251 252 /* calibrate the HW and poll the bit going to 0 for completion */ 253 OS_REG_WRITE(ah, AR_PHY_AGCCTL, 254 OS_REG_READ(ah, AR_PHY_AGCCTL) | AR_PHY_AGC_CAL); 255 (void) ath_hal_wait(ah, AR_PHY_AGCCTL, AR_PHY_AGC_CAL, 0); 256 257 /* Perform noise floor calibration and set status */ 258 if (!ar5210CalNoiseFloor(ah, ichan)) { 259 chan->channelFlags |= CHANNEL_CW_INT; 260 HALDEBUG(ah, HAL_DEBUG_ANY, 261 "%s: noise floor calibration failed\n", __func__); 262 FAIL(HAL_EIO); 263 } 264 265 for (q = 0; q < HAL_NUM_TX_QUEUES; q++) 266 ar5210ResetTxQueue(ah, q); 267 268 if (AH_PRIVATE(ah)->ah_rfkillEnabled) 269 ar5210EnableRfKill(ah); 270 271 /* 272 * Writing to AR_BEACON will start timers. Hence it should be 273 * the last register to be written. Do not reset tsf, do not 274 * enable beacons at this point, but preserve other values 275 * like beaconInterval. 276 */ 277 OS_REG_WRITE(ah, AR_BEACON, 278 (OS_REG_READ(ah, AR_BEACON) & 279 ~(AR_BEACON_EN | AR_BEACON_RESET_TSF))); 280 281 /* Restore user-specified slot time and timeouts */ 282 if (ahp->ah_sifstime != (u_int) -1) 283 ar5210SetSifsTime(ah, ahp->ah_sifstime); 284 if (ahp->ah_slottime != (u_int) -1) 285 ar5210SetSlotTime(ah, ahp->ah_slottime); 286 if (ahp->ah_acktimeout != (u_int) -1) 287 ar5210SetAckTimeout(ah, ahp->ah_acktimeout); 288 if (ahp->ah_ctstimeout != (u_int) -1) 289 ar5210SetCTSTimeout(ah, ahp->ah_ctstimeout); 290 if (AH_PRIVATE(ah)->ah_diagreg != 0) 291 OS_REG_WRITE(ah, AR_DIAG_SW, AH_PRIVATE(ah)->ah_diagreg); 292 293 AH_PRIVATE(ah)->ah_opmode = opmode; /* record operating mode */ 294 295 HALDEBUG(ah, HAL_DEBUG_RESET, "%s: done\n", __func__); 296 297 return AH_TRUE; 298 bad: 299 if (*status) 300 *status = ecode; 301 return AH_FALSE; 302 #undef FAIL 303 #undef N 304 } 305 306 static void 307 ar5210SetOperatingMode(struct ath_hal *ah, int opmode) 308 { 309 struct ath_hal_5210 *ahp = AH5210(ah); 310 uint32_t val; 311 312 val = OS_REG_READ(ah, AR_STA_ID1) & 0xffff; 313 switch (opmode) { 314 case HAL_M_HOSTAP: 315 OS_REG_WRITE(ah, AR_STA_ID1, val 316 | AR_STA_ID1_AP 317 | AR_STA_ID1_NO_PSPOLL 318 | AR_STA_ID1_DESC_ANTENNA 319 | ahp->ah_staId1Defaults); 320 break; 321 case HAL_M_IBSS: 322 OS_REG_WRITE(ah, AR_STA_ID1, val 323 | AR_STA_ID1_ADHOC 324 | AR_STA_ID1_NO_PSPOLL 325 | AR_STA_ID1_DESC_ANTENNA 326 | ahp->ah_staId1Defaults); 327 break; 328 case HAL_M_STA: 329 OS_REG_WRITE(ah, AR_STA_ID1, val 330 | AR_STA_ID1_NO_PSPOLL 331 | AR_STA_ID1_PWR_SV 332 | ahp->ah_staId1Defaults); 333 break; 334 case HAL_M_MONITOR: 335 OS_REG_WRITE(ah, AR_STA_ID1, val 336 | AR_STA_ID1_NO_PSPOLL 337 | ahp->ah_staId1Defaults); 338 break; 339 } 340 } 341 342 void 343 ar5210SetPCUConfig(struct ath_hal *ah) 344 { 345 ar5210SetOperatingMode(ah, AH_PRIVATE(ah)->ah_opmode); 346 } 347 348 /* 349 * Places the PHY and Radio chips into reset. A full reset 350 * must be called to leave this state. The PCI/MAC/PCU are 351 * not placed into reset as we must receive interrupt to 352 * re-enable the hardware. 353 */ 354 HAL_BOOL 355 ar5210PhyDisable(struct ath_hal *ah) 356 { 357 return ar5210SetResetReg(ah, AR_RC_RPHY, 10); 358 } 359 360 /* 361 * Places all of hardware into reset 362 */ 363 HAL_BOOL 364 ar5210Disable(struct ath_hal *ah) 365 { 366 #define AR_RC_HW (AR_RC_RPCU | AR_RC_RDMA | AR_RC_RPHY | AR_RC_RMAC) 367 if (!ar5210SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE)) 368 return AH_FALSE; 369 370 /* 371 * Reset the HW - PCI must be reset after the rest of the 372 * device has been reset 373 */ 374 if (!ar5210SetResetReg(ah, AR_RC_HW, AR_RC_SETTLE_TIME)) 375 return AH_FALSE; 376 OS_DELAY(1000); 377 (void) ar5210SetResetReg(ah, AR_RC_HW | AR_RC_RPCI, AR_RC_SETTLE_TIME); 378 OS_DELAY(2100); /* 8245 @ 96Mhz hangs with 2000us. */ 379 380 return AH_TRUE; 381 #undef AR_RC_HW 382 } 383 384 /* 385 * Places the hardware into reset and then pulls it out of reset 386 */ 387 HAL_BOOL 388 ar5210ChipReset(struct ath_hal *ah, HAL_CHANNEL *chan) 389 { 390 #define AR_RC_HW (AR_RC_RPCU | AR_RC_RDMA | AR_RC_RPHY | AR_RC_RMAC) 391 392 HALDEBUG(ah, HAL_DEBUG_RESET, "%s turbo %s\n", __func__, 393 chan && IS_CHAN_TURBO(chan) ? "enabled" : "disabled"); 394 395 if (!ar5210SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE)) 396 return AH_FALSE; 397 398 /* Place chip in turbo before reset to cleanly reset clocks */ 399 OS_REG_WRITE(ah, AR_PHY_FRCTL, 400 chan && IS_CHAN_TURBO(chan) ? AR_PHY_TURBO_MODE : 0); 401 402 /* 403 * Reset the HW. 404 * PCI must be reset after the rest of the device has been reset. 405 */ 406 if (!ar5210SetResetReg(ah, AR_RC_HW, AR_RC_SETTLE_TIME)) 407 return AH_FALSE; 408 OS_DELAY(1000); 409 if (!ar5210SetResetReg(ah, AR_RC_HW | AR_RC_RPCI, AR_RC_SETTLE_TIME)) 410 return AH_FALSE; 411 OS_DELAY(2100); /* 8245 @ 96Mhz hangs with 2000us. */ 412 413 /* 414 * Bring out of sleep mode (AGAIN) 415 * 416 * WARNING WARNING WARNING 417 * 418 * There is a problem with the chip where it doesn't always indicate 419 * that it's awake, so initializePowerUp() will fail. 420 */ 421 if (!ar5210SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE)) 422 return AH_FALSE; 423 424 /* Clear warm reset reg */ 425 return ar5210SetResetReg(ah, 0, 10); 426 #undef AR_RC_HW 427 } 428 429 enum { 430 FIRPWR_M = 0x03fc0000, 431 FIRPWR_S = 18, 432 KCOARSEHIGH_M = 0x003f8000, 433 KCOARSEHIGH_S = 15, 434 KCOARSELOW_M = 0x00007f80, 435 KCOARSELOW_S = 7, 436 ADCSAT_ICOUNT_M = 0x0001f800, 437 ADCSAT_ICOUNT_S = 11, 438 ADCSAT_THRESH_M = 0x000007e0, 439 ADCSAT_THRESH_S = 5 440 }; 441 442 /* 443 * Recalibrate the lower PHY chips to account for temperature/environment 444 * changes. 445 */ 446 HAL_BOOL 447 ar5210PerCalibrationN(struct ath_hal *ah, HAL_CHANNEL *chan, u_int chainMask, 448 HAL_BOOL longCal, HAL_BOOL *isCalDone) 449 { 450 uint32_t regBeacon; 451 uint32_t reg9858, reg985c, reg9868; 452 HAL_CHANNEL_INTERNAL *ichan; 453 454 ichan = ath_hal_checkchannel(ah, chan); 455 if (ichan == AH_NULL) { 456 HALDEBUG(ah, HAL_DEBUG_ANY, 457 "%s: invalid channel %u/0x%x; no mapping\n", 458 __func__, chan->channel, chan->channelFlags); 459 return AH_FALSE; 460 } 461 /* Disable tx and rx */ 462 OS_REG_WRITE(ah, AR_DIAG_SW, 463 OS_REG_READ(ah, AR_DIAG_SW) | (AR_DIAG_SW_DIS_TX | AR_DIAG_SW_DIS_RX)); 464 465 /* Disable Beacon Enable */ 466 regBeacon = OS_REG_READ(ah, AR_BEACON); 467 OS_REG_WRITE(ah, AR_BEACON, regBeacon & ~AR_BEACON_EN); 468 469 /* Delay 4ms to ensure that all tx and rx activity has ceased */ 470 OS_DELAY(4000); 471 472 /* Disable AGC to radio traffic */ 473 OS_REG_WRITE(ah, 0x9808, OS_REG_READ(ah, 0x9808) | 0x08000000); 474 /* Wait for the AGC traffic to cease. */ 475 OS_DELAY(10); 476 477 /* Change Channel to relock synth */ 478 if (!ar5210SetChannel(ah, ichan)) 479 return AH_FALSE; 480 481 /* wait for the synthesizer lock to stabilize */ 482 OS_DELAY(1000); 483 484 /* Re-enable AGC to radio traffic */ 485 OS_REG_WRITE(ah, 0x9808, OS_REG_READ(ah, 0x9808) & (~0x08000000)); 486 487 /* 488 * Configure the AGC so that it is highly unlikely (if not 489 * impossible) for it to send any gain changes to the analog 490 * chip. We store off the current values so that they can 491 * be rewritten below. Setting the following values: 492 * firpwr = -1 493 * Kcoursehigh = -1 494 * Kcourselow = -127 495 * ADCsat_icount = 2 496 * ADCsat_thresh = 12 497 */ 498 reg9858 = OS_REG_READ(ah, 0x9858); 499 reg985c = OS_REG_READ(ah, 0x985c); 500 reg9868 = OS_REG_READ(ah, 0x9868); 501 502 OS_REG_WRITE(ah, 0x9858, (reg9858 & ~FIRPWR_M) | 503 ((-1 << FIRPWR_S) & FIRPWR_M)); 504 OS_REG_WRITE(ah, 0x985c, 505 (reg985c & ~(KCOARSEHIGH_M | KCOARSELOW_M)) | 506 ((-1 << KCOARSEHIGH_S) & KCOARSEHIGH_M) | 507 ((-127 << KCOARSELOW_S) & KCOARSELOW_M)); 508 OS_REG_WRITE(ah, 0x9868, 509 (reg9868 & ~(ADCSAT_ICOUNT_M | ADCSAT_THRESH_M)) | 510 ((2 << ADCSAT_ICOUNT_S) & ADCSAT_ICOUNT_M) | 511 ((12 << ADCSAT_THRESH_S) & ADCSAT_THRESH_M)); 512 513 /* Wait for AGC changes to be enacted */ 514 OS_DELAY(20); 515 516 /* 517 * We disable RF mix/gain stages for the PGA to avoid a 518 * race condition that will occur with receiving a frame 519 * and performing the AGC calibration. This will be 520 * re-enabled at the end of offset cal. We turn off AGC 521 * writes during this write as it will go over the analog bus. 522 */ 523 OS_REG_WRITE(ah, 0x9808, OS_REG_READ(ah, 0x9808) | 0x08000000); 524 OS_DELAY(10); /* wait for the AGC traffic to cease */ 525 OS_REG_WRITE(ah, 0x98D4, 0x21); 526 OS_REG_WRITE(ah, 0x9808, OS_REG_READ(ah, 0x9808) & (~0x08000000)); 527 528 /* wait to make sure that additional AGC traffic has quiesced */ 529 OS_DELAY(1000); 530 531 /* AGC calibration (this was added to make the NF threshold check work) */ 532 OS_REG_WRITE(ah, AR_PHY_AGCCTL, 533 OS_REG_READ(ah, AR_PHY_AGCCTL) | AR_PHY_AGC_CAL); 534 #ifdef AH_DEBUG 535 if (!ath_hal_wait(ah, AR_PHY_AGCCTL, AR_PHY_AGC_CAL, 0)) 536 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: AGC calibration timeout\n", 537 __func__); 538 #endif 539 540 /* Rewrite our AGC values we stored off earlier (return AGC to normal operation) */ 541 OS_REG_WRITE(ah, 0x9858, reg9858); 542 OS_REG_WRITE(ah, 0x985c, reg985c); 543 OS_REG_WRITE(ah, 0x9868, reg9868); 544 545 /* Perform noise floor and set status */ 546 if (!ar5210CalNoiseFloor(ah, ichan)) { 547 /* 548 * Delay 5ms before retrying the noise floor - 549 * just to make sure. We're in an error 550 * condition here 551 */ 552 HALDEBUG(ah, HAL_DEBUG_NFCAL | HAL_DEBUG_PERCAL, 553 "%s: Performing 2nd Noise Cal\n", __func__); 554 OS_DELAY(5000); 555 if (!ar5210CalNoiseFloor(ah, ichan)) 556 chan->channelFlags |= CHANNEL_CW_INT; 557 } 558 559 /* Clear tx and rx disable bit */ 560 OS_REG_WRITE(ah, AR_DIAG_SW, 561 OS_REG_READ(ah, AR_DIAG_SW) & ~(AR_DIAG_SW_DIS_TX | AR_DIAG_SW_DIS_RX)); 562 563 /* Re-enable Beacons */ 564 OS_REG_WRITE(ah, AR_BEACON, regBeacon); 565 566 *isCalDone = AH_TRUE; 567 568 return AH_TRUE; 569 } 570 571 HAL_BOOL 572 ar5210PerCalibration(struct ath_hal *ah, HAL_CHANNEL *chan, HAL_BOOL *isIQdone) 573 { 574 return ar5210PerCalibrationN(ah, chan, 0x1, AH_TRUE, isIQdone); 575 } 576 577 HAL_BOOL 578 ar5210ResetCalValid(struct ath_hal *ah, HAL_CHANNEL *chan) 579 { 580 return AH_TRUE; 581 } 582 583 /* 584 * Writes the given reset bit mask into the reset register 585 */ 586 static HAL_BOOL 587 ar5210SetResetReg(struct ath_hal *ah, uint32_t resetMask, u_int waitTime) 588 { 589 uint32_t mask = resetMask ? resetMask : ~0; 590 HAL_BOOL rt; 591 592 OS_REG_WRITE(ah, AR_RC, resetMask); 593 /* need to wait at least 128 clocks when reseting PCI before read */ 594 OS_DELAY(waitTime); 595 596 resetMask &= AR_RC_RPCU | AR_RC_RDMA | AR_RC_RPHY | AR_RC_RMAC; 597 mask &= AR_RC_RPCU | AR_RC_RDMA | AR_RC_RPHY | AR_RC_RMAC; 598 rt = ath_hal_wait(ah, AR_RC, mask, resetMask); 599 if ((resetMask & AR_RC_RMAC) == 0) { 600 if (isBigEndian()) { 601 /* 602 * Set CFG, little-endian for register 603 * and descriptor accesses. 604 */ 605 mask = INIT_CONFIG_STATUS | 606 AR_CFG_SWTD | AR_CFG_SWRD | AR_CFG_SWRG; 607 OS_REG_WRITE(ah, AR_CFG, LE_READ_4(&mask)); 608 } else 609 OS_REG_WRITE(ah, AR_CFG, INIT_CONFIG_STATUS); 610 } 611 return rt; 612 } 613 614 615 /* 616 * Returns: the pcdac value 617 */ 618 static uint8_t 619 getPcdac(struct ath_hal *ah, const struct tpcMap *pRD, uint8_t dBm) 620 { 621 int32_t i; 622 int useNextEntry = AH_FALSE; 623 uint32_t interp; 624 625 for (i = AR_TP_SCALING_ENTRIES - 1; i >= 0; i--) { 626 /* Check for exact entry */ 627 if (dBm == AR_I2DBM(i)) { 628 if (pRD->pcdac[i] != 63) 629 return pRD->pcdac[i]; 630 useNextEntry = AH_TRUE; 631 } else if (dBm + 1 == AR_I2DBM(i) && i > 0) { 632 /* Interpolate for between entry with a logish scale */ 633 if (pRD->pcdac[i] != 63 && pRD->pcdac[i-1] != 63) { 634 interp = (350 * (pRD->pcdac[i] - pRD->pcdac[i-1])) + 999; 635 interp = (interp / 1000) + pRD->pcdac[i-1]; 636 return interp; 637 } 638 useNextEntry = AH_TRUE; 639 } else if (useNextEntry == AH_TRUE) { 640 /* Grab the next lowest */ 641 if (pRD->pcdac[i] != 63) 642 return pRD->pcdac[i]; 643 } 644 } 645 646 /* Return the lowest Entry if we haven't returned */ 647 for (i = 0; i < AR_TP_SCALING_ENTRIES; i++) 648 if (pRD->pcdac[i] != 63) 649 return pRD->pcdac[i]; 650 651 /* No value to return from table */ 652 #ifdef AH_DEBUG 653 ath_hal_printf(ah, "%s: empty transmit power table?\n", __func__); 654 #endif 655 return 1; 656 } 657 658 /* 659 * Find or interpolates the gainF value from the table ptr. 660 */ 661 static uint8_t 662 getGainF(struct ath_hal *ah, const struct tpcMap *pRD, 663 uint8_t pcdac, uint8_t *dBm) 664 { 665 uint32_t interp; 666 int low, high, i; 667 668 low = high = -1; 669 670 for (i = 0; i < AR_TP_SCALING_ENTRIES; i++) { 671 if(pRD->pcdac[i] == 63) 672 continue; 673 if (pcdac == pRD->pcdac[i]) { 674 *dBm = AR_I2DBM(i); 675 return pRD->gainF[i]; /* Exact Match */ 676 } 677 if (pcdac > pRD->pcdac[i]) 678 low = i; 679 if (pcdac < pRD->pcdac[i]) { 680 high = i; 681 if (low == -1) { 682 *dBm = AR_I2DBM(i); 683 /* PCDAC is lower than lowest setting */ 684 return pRD->gainF[i]; 685 } 686 break; 687 } 688 } 689 if (i >= AR_TP_SCALING_ENTRIES && low == -1) { 690 /* No settings were found */ 691 #ifdef AH_DEBUG 692 ath_hal_printf(ah, 693 "%s: no valid entries in the pcdac table: %d\n", 694 __func__, pcdac); 695 #endif 696 return 63; 697 } 698 if (i >= AR_TP_SCALING_ENTRIES) { 699 /* PCDAC setting was above the max setting in the table */ 700 *dBm = AR_I2DBM(low); 701 return pRD->gainF[low]; 702 } 703 /* Only exact if table has no missing entries */ 704 *dBm = (low + high) + 3; 705 706 /* 707 * Perform interpolation between low and high values to find gainF 708 * linearly scale the pcdac between low and high 709 */ 710 interp = ((pcdac - pRD->pcdac[low]) * 1000) / 711 (pRD->pcdac[high] - pRD->pcdac[low]); 712 /* 713 * Multiply the scale ratio by the gainF difference 714 * (plus a rnd up factor) 715 */ 716 interp = ((interp * (pRD->gainF[high] - pRD->gainF[low])) + 999) / 1000; 717 718 /* Add ratioed gain_f to low gain_f value */ 719 return interp + pRD->gainF[low]; 720 } 721 722 HAL_BOOL 723 ar5210SetTxPowerLimit(struct ath_hal *ah, uint32_t limit) 724 { 725 AH_PRIVATE(ah)->ah_powerLimit = AH_MIN(limit, AR5210_MAX_RATE_POWER); 726 /* XXX flush to h/w */ 727 return AH_TRUE; 728 } 729 730 /* 731 * Get TXPower values and set them in the radio 732 */ 733 static HAL_BOOL 734 setupPowerSettings(struct ath_hal *ah, HAL_CHANNEL *chan, uint8_t cp[17]) 735 { 736 const HAL_EEPROM_v1 *ee = AH_PRIVATE(ah)->ah_eeprom; 737 uint8_t gainFRD, gainF36, gainF48, gainF54; 738 uint8_t dBmRD, dBm36, dBm48, dBm54, dontcare; 739 uint32_t rd, group; 740 const struct tpcMap *pRD; 741 742 /* Set OB/DB Values regardless of channel */ 743 cp[15] = (ee->ee_biasCurrents >> 4) & 0x7; 744 cp[16] = ee->ee_biasCurrents & 0x7; 745 746 if (chan->channel < 5170 || chan->channel > 5320) { 747 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid channel %u\n", 748 __func__, chan->channel); 749 return AH_FALSE; 750 } 751 752 HALASSERT(ee->ee_version >= AR_EEPROM_VER1 && 753 ee->ee_version < AR_EEPROM_VER3); 754 755 /* Match regulatory domain */ 756 for (rd = 0; rd < AR_REG_DOMAINS_MAX; rd++) 757 if (AH_PRIVATE(ah)->ah_currentRD == ee->ee_regDomain[rd]) 758 break; 759 if (rd == AR_REG_DOMAINS_MAX) { 760 #ifdef AH_DEBUG 761 ath_hal_printf(ah, 762 "%s: no calibrated regulatory domain matches the " 763 "current regularly domain (0x%0x)\n", __func__, 764 AH_PRIVATE(ah)->ah_currentRD); 765 #endif 766 return AH_FALSE; 767 } 768 group = ((chan->channel - 5170) / 10); 769 770 if (group > 11) { 771 /* Pull 5.29 into the 5.27 group */ 772 group--; 773 } 774 775 /* Integer divide will set group from 0 to 4 */ 776 group = group / 3; 777 pRD = &ee->ee_tpc[group]; 778 779 /* Set PC DAC Values */ 780 cp[14] = pRD->regdmn[rd]; 781 cp[9] = AH_MIN(pRD->regdmn[rd], pRD->rate36); 782 cp[8] = AH_MIN(pRD->regdmn[rd], pRD->rate48); 783 cp[7] = AH_MIN(pRD->regdmn[rd], pRD->rate54); 784 785 /* Find Corresponding gainF values for RD, 36, 48, 54 */ 786 gainFRD = getGainF(ah, pRD, pRD->regdmn[rd], &dBmRD); 787 gainF36 = getGainF(ah, pRD, cp[9], &dBm36); 788 gainF48 = getGainF(ah, pRD, cp[8], &dBm48); 789 gainF54 = getGainF(ah, pRD, cp[7], &dBm54); 790 791 /* Power Scale if requested */ 792 if (AH_PRIVATE(ah)->ah_tpScale != HAL_TP_SCALE_MAX) { 793 static const uint16_t tpcScaleReductionTable[5] = 794 { 0, 3, 6, 9, AR5210_MAX_RATE_POWER }; 795 uint16_t tpScale; 796 797 tpScale = tpcScaleReductionTable[AH_PRIVATE(ah)->ah_tpScale]; 798 if (dBmRD < tpScale+3) 799 dBmRD = 3; /* min */ 800 else 801 dBmRD -= tpScale; 802 cp[14] = getPcdac(ah, pRD, dBmRD); 803 gainFRD = getGainF(ah, pRD, cp[14], &dontcare); 804 dBm36 = AH_MIN(dBm36, dBmRD); 805 cp[9] = getPcdac(ah, pRD, dBm36); 806 gainF36 = getGainF(ah, pRD, cp[9], &dontcare); 807 dBm48 = AH_MIN(dBm48, dBmRD); 808 cp[8] = getPcdac(ah, pRD, dBm48); 809 gainF48 = getGainF(ah, pRD, cp[8], &dontcare); 810 dBm54 = AH_MIN(dBm54, dBmRD); 811 cp[7] = getPcdac(ah, pRD, dBm54); 812 gainF54 = getGainF(ah, pRD, cp[7], &dontcare); 813 } 814 /* Record current dBm at rate 6 */ 815 AH_PRIVATE(ah)->ah_maxPowerLevel = 2*dBmRD; 816 817 cp[13] = cp[12] = cp[11] = cp[10] = cp[14]; 818 819 /* Set GainF Values */ 820 cp[0] = gainFRD - gainF54; 821 cp[1] = gainFRD - gainF48; 822 cp[2] = gainFRD - gainF36; 823 /* 9, 12, 18, 24 have no gain_delta from 6 */ 824 cp[3] = cp[4] = cp[5] = cp[6] = 0; 825 return AH_TRUE; 826 } 827 828 /* 829 * Places the device in and out of reset and then places sane 830 * values in the registers based on EEPROM config, initialization 831 * vectors (as determined by the mode), and station configuration 832 */ 833 HAL_BOOL 834 ar5210SetTransmitPower(struct ath_hal *ah, HAL_CHANNEL *chan) 835 { 836 #define N(a) (sizeof (a) / sizeof (a[0])) 837 static const uint32_t pwr_regs_start[17] = { 838 0x00000000, 0x00000000, 0x00000000, 839 0x00000000, 0x00000000, 0xf0000000, 840 0xcc000000, 0x00000000, 0x00000000, 841 0x00000000, 0x0a000000, 0x000000e2, 842 0x0a000020, 0x01000002, 0x01000018, 843 0x40000000, 0x00000418 844 }; 845 uint16_t i; 846 uint8_t cp[sizeof(ar5k0007_pwrSettings)]; 847 uint32_t pwr_regs[17]; 848 849 OS_MEMCPY(pwr_regs, pwr_regs_start, sizeof(pwr_regs)); 850 OS_MEMCPY(cp, ar5k0007_pwrSettings, sizeof(cp)); 851 852 /* Check the EEPROM tx power calibration settings */ 853 if (!setupPowerSettings(ah, chan, cp)) { 854 #ifdef AH_DEBUG 855 ath_hal_printf(ah, "%s: unable to setup power settings\n", 856 __func__); 857 #endif 858 return AH_FALSE; 859 } 860 if (cp[15] < 1 || cp[15] > 5) { 861 #ifdef AH_DEBUG 862 ath_hal_printf(ah, "%s: OB out of range (%u)\n", 863 __func__, cp[15]); 864 #endif 865 return AH_FALSE; 866 } 867 if (cp[16] < 1 || cp[16] > 5) { 868 #ifdef AH_DEBUG 869 ath_hal_printf(ah, "%s: DB out of range (%u)\n", 870 __func__, cp[16]); 871 #endif 872 return AH_FALSE; 873 } 874 875 /* reverse bits of the transmit power array */ 876 for (i = 0; i < 7; i++) 877 cp[i] = ath_hal_reverseBits(cp[i], 5); 878 for (i = 7; i < 15; i++) 879 cp[i] = ath_hal_reverseBits(cp[i], 6); 880 881 /* merge transmit power values into the register - quite gross */ 882 pwr_regs[0] |= ((cp[1] << 5) & 0xE0) | (cp[0] & 0x1F); 883 pwr_regs[1] |= ((cp[3] << 7) & 0x80) | ((cp[2] << 2) & 0x7C) | 884 ((cp[1] >> 3) & 0x03); 885 pwr_regs[2] |= ((cp[4] << 4) & 0xF0) | ((cp[3] >> 1) & 0x0F); 886 pwr_regs[3] |= ((cp[6] << 6) & 0xC0) | ((cp[5] << 1) & 0x3E) | 887 ((cp[4] >> 4) & 0x01); 888 pwr_regs[4] |= ((cp[7] << 3) & 0xF8) | ((cp[6] >> 2) & 0x07); 889 pwr_regs[5] |= ((cp[9] << 7) & 0x80) | ((cp[8] << 1) & 0x7E) | 890 ((cp[7] >> 5) & 0x01); 891 pwr_regs[6] |= ((cp[10] << 5) & 0xE0) | ((cp[9] >> 1) & 0x1F); 892 pwr_regs[7] |= ((cp[11] << 3) & 0xF8) | ((cp[10] >> 3) & 0x07); 893 pwr_regs[8] |= ((cp[12] << 1) & 0x7E) | ((cp[11] >> 5) & 0x01); 894 pwr_regs[9] |= ((cp[13] << 5) & 0xE0); 895 pwr_regs[10] |= ((cp[14] << 3) & 0xF8) | ((cp[13] >> 3) & 0x07); 896 pwr_regs[11] |= ((cp[14] >> 5) & 0x01); 897 898 /* Set OB */ 899 pwr_regs[8] |= (ath_hal_reverseBits(cp[15], 3) << 7) & 0x80; 900 pwr_regs[9] |= (ath_hal_reverseBits(cp[15], 3) >> 1) & 0x03; 901 902 /* Set DB */ 903 pwr_regs[9] |= (ath_hal_reverseBits(cp[16], 3) << 2) & 0x1C; 904 905 /* Write the registers */ 906 for (i = 0; i < N(pwr_regs)-1; i++) 907 OS_REG_WRITE(ah, 0x0000989c, pwr_regs[i]); 908 /* last write is a flush */ 909 OS_REG_WRITE(ah, 0x000098d4, pwr_regs[i]); 910 911 return AH_TRUE; 912 #undef N 913 } 914 915 /* 916 * Takes the MHz channel value and sets the Channel value 917 * 918 * ASSUMES: Writes enabled to analog bus before AGC is active 919 * or by disabling the AGC. 920 */ 921 static HAL_BOOL 922 ar5210SetChannel(struct ath_hal *ah, HAL_CHANNEL_INTERNAL *chan) 923 { 924 uint32_t data; 925 926 /* Set the Channel */ 927 data = ath_hal_reverseBits((chan->channel - 5120)/10, 5); 928 data = (data << 1) | 0x41; 929 OS_REG_WRITE(ah, AR_PHY(0x27), data); 930 OS_REG_WRITE(ah, AR_PHY(0x30), 0); 931 AH_PRIVATE(ah)->ah_curchan = chan; 932 return AH_TRUE; 933 } 934 935 int16_t 936 ar5210GetNoiseFloor(struct ath_hal *ah) 937 { 938 int16_t nf; 939 940 nf = (OS_REG_READ(ah, AR_PHY(25)) >> 19) & 0x1ff; 941 if (nf & 0x100) 942 nf = 0 - ((nf ^ 0x1ff) + 1); 943 return nf; 944 } 945 946 #define NORMAL_NF_THRESH (-72) 947 /* 948 * Peform the noisefloor calibration and check for 949 * any constant channel interference 950 * 951 * Returns: TRUE for a successful noise floor calibration; else FALSE 952 */ 953 HAL_BOOL 954 ar5210CalNoiseFloor(struct ath_hal *ah, HAL_CHANNEL_INTERNAL *chan) 955 { 956 int32_t nf, nfLoops; 957 958 /* Calibrate the noise floor */ 959 OS_REG_WRITE(ah, AR_PHY_AGCCTL, 960 OS_REG_READ(ah, AR_PHY_AGCCTL) | AR_PHY_AGC_NF); 961 962 /* Do not read noise floor until it has done the first update */ 963 if (!ath_hal_wait(ah, AR_PHY_AGCCTL, AR_PHY_AGC_NF, 0)) { 964 #ifdef ATH_HAL_DEBUG 965 ath_hal_printf(ah, " -PHY NF Reg state: 0x%x\n", 966 OS_REG_READ(ah, AR_PHY_AGCCTL)); 967 ath_hal_printf(ah, " -MAC Reset Reg state: 0x%x\n", 968 OS_REG_READ(ah, AR_RC)); 969 ath_hal_printf(ah, " -PHY Active Reg state: 0x%x\n", 970 OS_REG_READ(ah, AR_PHY_ACTIVE)); 971 #endif /* ATH_HAL_DEBUG */ 972 return AH_FALSE; 973 } 974 975 nf = 0; 976 /* Keep checking until the floor is below the threshold or the nf is done */ 977 for (nfLoops = 0; ((nfLoops < 21) && (nf > NORMAL_NF_THRESH)); nfLoops++) { 978 OS_DELAY(1000); /* Sleep for 1 ms */ 979 nf = ar5210GetNoiseFloor(ah); 980 } 981 982 if (nf > NORMAL_NF_THRESH) { 983 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: Bad noise cal %d\n", 984 __func__, nf); 985 chan->rawNoiseFloor = 0; 986 return AH_FALSE; 987 } 988 chan->rawNoiseFloor = nf; 989 return AH_TRUE; 990 } 991 992 /* 993 * Adjust NF based on statistical values for 5GHz frequencies. 994 */ 995 int16_t 996 ar5210GetNfAdjust(struct ath_hal *ah, const HAL_CHANNEL_INTERNAL *c) 997 { 998 return 0; 999 } 1000 1001 HAL_RFGAIN 1002 ar5210GetRfgain(struct ath_hal *ah) 1003 { 1004 return HAL_RFGAIN_INACTIVE; 1005 } 1006
Indexes created Wed Oct 29 20:09:47 GMT 2025