sys/dev/netif/ath/hal/ath_hal/ar5212/ar5413.c

   1 /*
   2  * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
   3  * Copyright (c) 2002-2008 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  * $FreeBSD: head/sys/dev/ath/ath_hal/ar5212/ar5413.c 188979 2009-02-24 01:07:06Z sam $
  18  */
  19 #include "opt_ah.h"
  20
  21 #include "ah.h"
  22 #include "ah_internal.h"
  23
  24 #include "ah_eeprom_v3.h"
  25
  26 #include "ar5212/ar5212.h"
  27 #include "ar5212/ar5212reg.h"
  28 #include "ar5212/ar5212phy.h"
  29
  30 #define AH_5212_5413
  31 #include "ar5212/ar5212.ini"
  32
  33 struct ar5413State {
  34         RF_HAL_FUNCS    base;           /* public state, must be first */
  35         uint16_t        pcdacTable[PWR_TABLE_SIZE_2413];
  36
  37         uint32_t        Bank1Data[NELEM(ar5212Bank1_5413)];
  38         uint32_t        Bank2Data[NELEM(ar5212Bank2_5413)];
  39         uint32_t        Bank3Data[NELEM(ar5212Bank3_5413)];
  40         uint32_t        Bank6Data[NELEM(ar5212Bank6_5413)];
  41         uint32_t        Bank7Data[NELEM(ar5212Bank7_5413)];
  42
  43         /*
  44          * Private state for reduced stack usage.
  45          */
  46         /* filled out Vpd table for all pdGains (chanL) */
  47         uint16_t vpdTable_L[MAX_NUM_PDGAINS_PER_CHANNEL]
  48                             [MAX_PWR_RANGE_IN_HALF_DB];
  49         /* filled out Vpd table for all pdGains (chanR) */
  50         uint16_t vpdTable_R[MAX_NUM_PDGAINS_PER_CHANNEL]
  51                             [MAX_PWR_RANGE_IN_HALF_DB];
  52         /* filled out Vpd table for all pdGains (interpolated) */
  53         uint16_t vpdTable_I[MAX_NUM_PDGAINS_PER_CHANNEL]
  54                             [MAX_PWR_RANGE_IN_HALF_DB];
  55 };
  56 #define AR5413(ah)      ((struct ar5413State *) AH5212(ah)->ah_rfHal)
  57
  58 extern  void ar5212ModifyRfBuffer(uint32_t *rfBuf, uint32_t reg32,
  59                 uint32_t numBits, uint32_t firstBit, uint32_t column);
  60
  61 static void
  62 ar5413WriteRegs(struct ath_hal *ah, u_int modesIndex, u_int freqIndex,
  63         int writes)
  64 {
  65         HAL_INI_WRITE_ARRAY(ah, ar5212Modes_5413, modesIndex, writes);
  66         HAL_INI_WRITE_ARRAY(ah, ar5212Common_5413, 1, writes);
  67         HAL_INI_WRITE_ARRAY(ah, ar5212BB_RfGain_5413, freqIndex, writes);
  68 }
  69
  70 /*
  71  * Take the MHz channel value and set the Channel value
  72  *
  73  * ASSUMES: Writes enabled to analog bus
  74  */
  75 static HAL_BOOL
  76 ar5413SetChannel(struct ath_hal *ah, const struct ieee80211_channel *chan)
  77 {
  78         uint16_t freq = ath_hal_gethwchannel(ah, chan);
  79         uint32_t channelSel  = 0;
  80         uint32_t bModeSynth  = 0;
  81         uint32_t aModeRefSel = 0;
  82         uint32_t reg32       = 0;
  83
  84         OS_MARK(ah, AH_MARK_SETCHANNEL, freq);
  85
  86         if (freq < 4800) {
  87                 uint32_t txctl;
  88
  89                 if (((freq - 2192) % 5) == 0) {
  90                         channelSel = ((freq - 672) * 2 - 3040)/10;
  91                         bModeSynth = 0;
  92                 } else if (((freq - 2224) % 5) == 0) {
  93                         channelSel = ((freq - 704) * 2 - 3040) / 10;
  94                         bModeSynth = 1;
  95                 } else {
  96                         HALDEBUG(ah, HAL_DEBUG_ANY,
  97                             "%s: invalid channel %u MHz\n",
  98                             __func__, freq);
  99                         return AH_FALSE;
 100                 }
 101
 102                 channelSel = (channelSel << 2) & 0xff;
 103                 channelSel = ath_hal_reverseBits(channelSel, 8);
 104
 105                 txctl = OS_REG_READ(ah, AR_PHY_CCK_TX_CTRL);
 106                 if (freq == 2484) {
 107                         /* Enable channel spreading for channel 14 */
 108                         OS_REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
 109                                 txctl | AR_PHY_CCK_TX_CTRL_JAPAN);
 110                 } else {
 111                         OS_REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
 112                                 txctl &~ AR_PHY_CCK_TX_CTRL_JAPAN);
 113                 }
 114         } else if (((freq % 5) == 2) && (freq <= 5435)) {
 115                 freq = freq - 2; /* Align to even 5MHz raster */
 116                 channelSel = ath_hal_reverseBits(
 117                         (uint32_t)(((freq - 4800)*10)/25 + 1), 8);
 118                 aModeRefSel = ath_hal_reverseBits(0, 2);
 119         } else if ((freq % 20) == 0 && freq >= 5120) {
 120                 channelSel = ath_hal_reverseBits(
 121                         ((freq - 4800) / 20 << 2), 8);
 122                 aModeRefSel = ath_hal_reverseBits(1, 2);
 123         } else if ((freq % 10) == 0) {
 124                 channelSel = ath_hal_reverseBits(
 125                         ((freq - 4800) / 10 << 1), 8);
 126                 aModeRefSel = ath_hal_reverseBits(1, 2);
 127         } else if ((freq % 5) == 0) {
 128                 channelSel = ath_hal_reverseBits(
 129                         (freq - 4800) / 5, 8);
 130                 aModeRefSel = ath_hal_reverseBits(1, 2);
 131         } else {
 132                 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid channel %u MHz\n",
 133                     __func__, freq);
 134                 return AH_FALSE;
 135         }
 136
 137         reg32 = (channelSel << 4) | (aModeRefSel << 2) | (bModeSynth << 1) |
 138                         (1 << 12) | 0x1;
 139         OS_REG_WRITE(ah, AR_PHY(0x27), reg32 & 0xff);
 140
 141         reg32 >>= 8;
 142         OS_REG_WRITE(ah, AR_PHY(0x36), reg32 & 0x7f);
 143
 144         AH_PRIVATE(ah)->ah_curchan = chan;
 145         return AH_TRUE;
 146 }
 147
 148 /*
 149  * Reads EEPROM header info from device structure and programs
 150  * all rf registers
 151  *
 152  * REQUIRES: Access to the analog rf device
 153  */
 154 static HAL_BOOL
 155 ar5413SetRfRegs(struct ath_hal *ah,
 156         const struct ieee80211_channel *chan,
 157         uint16_t modesIndex, uint16_t *rfXpdGain)
 158 {
 159 #define RF_BANK_SETUP(_priv, _ix, _col) do {                                \
 160         int i;                                                              \
 161         for (i = 0; i < NELEM(ar5212Bank##_ix##_5413); i++)                 \
 162                 (_priv)->Bank##_ix##Data[i] = ar5212Bank##_ix##_5413[i][_col];\
 163 } while (0)
 164         struct ath_hal_5212 *ahp = AH5212(ah);
 165         uint16_t freq = ath_hal_gethwchannel(ah, chan);
 166         const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom;
 167         uint16_t ob5GHz = 0, db5GHz = 0;
 168         uint16_t ob2GHz = 0, db2GHz = 0;
 169         struct ar5413State *priv = AR5413(ah);
 170         int regWrites = 0;
 171
 172         HALDEBUG(ah, HAL_DEBUG_RFPARAM, "%s: chan %u/0x%x modesIndex %u\n",
 173             __func__, chan->ic_freq, chan->ic_flags, modesIndex);
 174
 175         HALASSERT(priv != AH_NULL);
 176
 177         /* Setup rf parameters */
 178         switch (chan->ic_flags & IEEE80211_CHAN_ALLFULL) {
 179         case IEEE80211_CHAN_A:
 180                 if (freq > 4000 && freq < 5260) {
 181                         ob5GHz = ee->ee_ob1;
 182                         db5GHz = ee->ee_db1;
 183                 } else if (freq >= 5260 && freq < 5500) {
 184                         ob5GHz = ee->ee_ob2;
 185                         db5GHz = ee->ee_db2;
 186                 } else if (freq >= 5500 && freq < 5725) {
 187                         ob5GHz = ee->ee_ob3;
 188                         db5GHz = ee->ee_db3;
 189                 } else if (freq >= 5725) {
 190                         ob5GHz = ee->ee_ob4;
 191                         db5GHz = ee->ee_db4;
 192                 } else {
 193                         /* XXX else */
 194                 }
 195                 break;
 196         case IEEE80211_CHAN_B:
 197                 ob2GHz = ee->ee_obFor24;
 198                 db2GHz = ee->ee_dbFor24;
 199                 break;
 200         case IEEE80211_CHAN_G:
 201         case IEEE80211_CHAN_PUREG:      /* NB: really 108G */
 202                 ob2GHz = ee->ee_obFor24g;
 203                 db2GHz = ee->ee_dbFor24g;
 204                 break;
 205         default:
 206                 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid channel flags 0x%x\n",
 207                     __func__, chan->ic_flags);
 208                 return AH_FALSE;
 209         }
 210
 211         /* Bank 1 Write */
 212         RF_BANK_SETUP(priv, 1, 1);
 213
 214         /* Bank 2 Write */
 215         RF_BANK_SETUP(priv, 2, modesIndex);
 216
 217         /* Bank 3 Write */
 218         RF_BANK_SETUP(priv, 3, modesIndex);
 219
 220         /* Bank 6 Write */
 221         RF_BANK_SETUP(priv, 6, modesIndex);
 222
 223         /* Only the 5 or 2 GHz OB/DB need to be set for a mode */
 224         if (IEEE80211_IS_CHAN_2GHZ(chan)) {
 225                 ar5212ModifyRfBuffer(priv->Bank6Data, ob2GHz, 3, 241, 0);
 226                 ar5212ModifyRfBuffer(priv->Bank6Data, db2GHz, 3, 238, 0);
 227
 228                         /* TODO - only for Eagle 1.0 2GHz - remove for production */
 229                         /* XXX: but without this bit G doesn't work. */
 230                         ar5212ModifyRfBuffer(priv->Bank6Data, 1 , 1, 291, 2);
 231
 232                         /* Optimum value for rf_pwd_iclobuf2G for PCIe chips only */
 233                         if (AH_PRIVATE(ah)->ah_ispcie) {
 234                                 ar5212ModifyRfBuffer(priv->Bank6Data, ath_hal_reverseBits(6, 3),
 235                                                  3, 131, 3);
 236                         }
 237         } else {
 238                 ar5212ModifyRfBuffer(priv->Bank6Data, ob5GHz, 3, 247, 0);
 239                 ar5212ModifyRfBuffer(priv->Bank6Data, db5GHz, 3, 244, 0);
 240
 241         }
 242
 243         /* Bank 7 Setup */
 244         RF_BANK_SETUP(priv, 7, modesIndex);
 245
 246         /* Write Analog registers */
 247         HAL_INI_WRITE_BANK(ah, ar5212Bank1_5413, priv->Bank1Data, regWrites);
 248         HAL_INI_WRITE_BANK(ah, ar5212Bank2_5413, priv->Bank2Data, regWrites);
 249         HAL_INI_WRITE_BANK(ah, ar5212Bank3_5413, priv->Bank3Data, regWrites);
 250         HAL_INI_WRITE_BANK(ah, ar5212Bank6_5413, priv->Bank6Data, regWrites);
 251         HAL_INI_WRITE_BANK(ah, ar5212Bank7_5413, priv->Bank7Data, regWrites);
 252
 253         /* Now that we have reprogrammed rfgain value, clear the flag. */
 254         ahp->ah_rfgainState = HAL_RFGAIN_INACTIVE;
 255
 256         return AH_TRUE;
 257 #undef  RF_BANK_SETUP
 258 }
 259
 260 /*
 261  * Return a reference to the requested RF Bank.
 262  */
 263 static uint32_t *
 264 ar5413GetRfBank(struct ath_hal *ah, int bank)
 265 {
 266         struct ar5413State *priv = AR5413(ah);
 267
 268         HALASSERT(priv != AH_NULL);
 269         switch (bank) {
 270         case 1: return priv->Bank1Data;
 271         case 2: return priv->Bank2Data;
 272         case 3: return priv->Bank3Data;
 273         case 6: return priv->Bank6Data;
 274         case 7: return priv->Bank7Data;
 275         }
 276         HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unknown RF Bank %d requested\n",
 277             __func__, bank);
 278         return AH_NULL;
 279 }
 280
 281 /*
 282  * Return indices surrounding the value in sorted integer lists.
 283  *
 284  * NB: the input list is assumed to be sorted in ascending order
 285  */
 286 static void
 287 GetLowerUpperIndex(int16_t v, const uint16_t *lp, uint16_t listSize,
 288                           uint32_t *vlo, uint32_t *vhi)
 289 {
 290         int16_t target = v;
 291         const uint16_t *ep = lp+listSize;
 292         const uint16_t *tp;
 293
 294         /*
 295          * Check first and last elements for out-of-bounds conditions.
 296          */
 297         if (target < lp[0]) {
 298                 *vlo = *vhi = 0;
 299                 return;
 300         }
 301         if (target >= ep[-1]) {
 302                 *vlo = *vhi = listSize - 1;
 303                 return;
 304         }
 305
 306         /* look for value being near or between 2 values in list */
 307         for (tp = lp; tp < ep; tp++) {
 308                 /*
 309                  * If value is close to the current value of the list
 310                  * then target is not between values, it is one of the values
 311                  */
 312                 if (*tp == target) {
 313                         *vlo = *vhi = tp - (const uint16_t *) lp;
 314                         return;
 315                 }
 316                 /*
 317                  * Look for value being between current value and next value
 318                  * if so return these 2 values
 319                  */
 320                 if (target < tp[1]) {
 321                         *vlo = tp - (const uint16_t *) lp;
 322                         *vhi = *vlo + 1;
 323                         return;
 324                 }
 325         }
 326 }
 327
 328 /*
 329  * Fill the Vpdlist for indices Pmax-Pmin
 330  */
 331 static HAL_BOOL
 332 ar5413FillVpdTable(uint32_t pdGainIdx, int16_t Pmin, int16_t  Pmax,
 333                    const int16_t *pwrList, const uint16_t *VpdList,
 334                    uint16_t numIntercepts,
 335                    uint16_t retVpdList[][64])
 336 {
 337         uint16_t ii, kk;
 338         int16_t currPwr = (int16_t)(2*Pmin);
 339         /* since Pmin is pwr*2 and pwrList is 4*pwr */
 340         uint32_t  idxL, idxR;
 341
 342         ii = 0;
 343
 344         if (numIntercepts < 2)
 345                 return AH_FALSE;
 346
 347         while (ii <= (uint16_t)(Pmax - Pmin)) {
 348                 GetLowerUpperIndex(currPwr, (const uint16_t *) pwrList,
 349                                    numIntercepts, &(idxL), &(idxR));
 350                 if (idxR < 1)
 351                         idxR = 1;                       /* extrapolate below */
 352                 if (idxL == (uint32_t)(numIntercepts - 1))
 353                         idxL = numIntercepts - 2;       /* extrapolate above */
 354                 if (pwrList[idxL] == pwrList[idxR])
 355                         kk = VpdList[idxL];
 356                 else
 357                         kk = (uint16_t)
 358                                 (((currPwr - pwrList[idxL])*VpdList[idxR]+
 359                                   (pwrList[idxR] - currPwr)*VpdList[idxL])/
 360                                  (pwrList[idxR] - pwrList[idxL]));
 361                 retVpdList[pdGainIdx][ii] = kk;
 362                 ii++;
 363                 currPwr += 2;                           /* half dB steps */
 364         }
 365
 366         return AH_TRUE;
 367 }
 368
 369 /*
 370  * Returns interpolated or the scaled up interpolated value
 371  */
 372 static int16_t
 373 interpolate_signed(uint16_t target, uint16_t srcLeft, uint16_t srcRight,
 374         int16_t targetLeft, int16_t targetRight)
 375 {
 376         int16_t rv;
 377
 378         if (srcRight != srcLeft) {
 379                 rv = ((target - srcLeft)*targetRight +
 380                       (srcRight - target)*targetLeft) / (srcRight - srcLeft);
 381         } else {
 382                 rv = targetLeft;
 383         }
 384         return rv;
 385 }
 386
 387 /*
 388  * Uses the data points read from EEPROM to reconstruct the pdadc power table
 389  * Called by ar5413SetPowerTable()
 390  */
 391 static int
 392 ar5413getGainBoundariesAndPdadcsForPowers(struct ath_hal *ah, uint16_t channel,
 393                 const RAW_DATA_STRUCT_2413 *pRawDataset,
 394                 uint16_t pdGainOverlap_t2,
 395                 int16_t  *pMinCalPower, uint16_t pPdGainBoundaries[],
 396                 uint16_t pPdGainValues[], uint16_t pPDADCValues[])
 397 {
 398         struct ar5413State *priv = AR5413(ah);
 399 #define VpdTable_L      priv->vpdTable_L
 400 #define VpdTable_R      priv->vpdTable_R
 401 #define VpdTable_I      priv->vpdTable_I
 402         uint32_t ii, jj, kk;
 403         int32_t ss;/* potentially -ve index for taking care of pdGainOverlap */
 404         uint32_t idxL, idxR;
 405         uint32_t numPdGainsUsed = 0;
 406         /*
 407          * If desired to support -ve power levels in future, just
 408          * change pwr_I_0 to signed 5-bits.
 409          */
 410         int16_t Pmin_t2[MAX_NUM_PDGAINS_PER_CHANNEL];
 411         /* to accomodate -ve power levels later on. */
 412         int16_t Pmax_t2[MAX_NUM_PDGAINS_PER_CHANNEL];
 413         /* to accomodate -ve power levels later on */
 414         uint16_t numVpd = 0;
 415         uint16_t Vpd_step;
 416         int16_t tmpVal ;
 417         uint32_t sizeCurrVpdTable, maxIndex, tgtIndex;
 418
 419         /* Get upper lower index */
 420         GetLowerUpperIndex(channel, pRawDataset->pChannels,
 421                                  pRawDataset->numChannels, &(idxL), &(idxR));
 422
 423         for (ii = 0; ii < MAX_NUM_PDGAINS_PER_CHANNEL; ii++) {
 424                 jj = MAX_NUM_PDGAINS_PER_CHANNEL - ii - 1;
 425                 /* work backwards 'cause highest pdGain for lowest power */
 426                 numVpd = pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].numVpd;
 427                 if (numVpd > 0) {
 428                         pPdGainValues[numPdGainsUsed] = pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].pd_gain;
 429                         Pmin_t2[numPdGainsUsed] = pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].pwr_t4[0];
 430                         if (Pmin_t2[numPdGainsUsed] >pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[0]) {
 431                                 Pmin_t2[numPdGainsUsed] = pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[0];
 432                         }
 433                         Pmin_t2[numPdGainsUsed] = (int16_t)
 434                                 (Pmin_t2[numPdGainsUsed] / 2);
 435                         Pmax_t2[numPdGainsUsed] = pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].pwr_t4[numVpd-1];
 436                         if (Pmax_t2[numPdGainsUsed] > pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[numVpd-1])
 437                                 Pmax_t2[numPdGainsUsed] =
 438                                         pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[numVpd-1];
 439                         Pmax_t2[numPdGainsUsed] = (int16_t)(Pmax_t2[numPdGainsUsed] / 2);
 440                         ar5413FillVpdTable(
 441                                            numPdGainsUsed, Pmin_t2[numPdGainsUsed], Pmax_t2[numPdGainsUsed],
 442                                            &(pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].pwr_t4[0]),
 443                                            &(pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].Vpd[0]), numVpd, VpdTable_L
 444                                            );
 445                         ar5413FillVpdTable(
 446                                            numPdGainsUsed, Pmin_t2[numPdGainsUsed], Pmax_t2[numPdGainsUsed],
 447                                            &(pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[0]),
 448                                            &(pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].Vpd[0]), numVpd, VpdTable_R
 449                                            );
 450                         for (kk = 0; kk < (uint16_t)(Pmax_t2[numPdGainsUsed] - Pmin_t2[numPdGainsUsed]); kk++) {
 451                                 VpdTable_I[numPdGainsUsed][kk] =
 452                                         interpolate_signed(
 453                                                            channel, pRawDataset->pChannels[idxL], pRawDataset->pChannels[idxR],
 454                                                            (int16_t)VpdTable_L[numPdGainsUsed][kk], (int16_t)VpdTable_R[numPdGainsUsed][kk]);
 455                         }
 456                         /* fill VpdTable_I for this pdGain */
 457                         numPdGainsUsed++;
 458                 }
 459                 /* if this pdGain is used */
 460         }
 461
 462         *pMinCalPower = Pmin_t2[0];
 463         kk = 0; /* index for the final table */
 464         for (ii = 0; ii < numPdGainsUsed; ii++) {
 465                 if (ii == (numPdGainsUsed - 1))
 466                         pPdGainBoundaries[ii] = Pmax_t2[ii] +
 467                                 PD_GAIN_BOUNDARY_STRETCH_IN_HALF_DB;
 468                 else
 469                         pPdGainBoundaries[ii] = (uint16_t)
 470                                 ((Pmax_t2[ii] + Pmin_t2[ii+1]) / 2 );
 471                 if (pPdGainBoundaries[ii] > 63) {
 472                         HALDEBUG(ah, HAL_DEBUG_ANY,
 473                             "%s: clamp pPdGainBoundaries[%d] %d\n",
 474                             __func__, ii, pPdGainBoundaries[ii]);/*XXX*/
 475                         pPdGainBoundaries[ii] = 63;
 476                 }
 477
 478                 /* Find starting index for this pdGain */
 479                 if (ii == 0)
 480                         ss = 0; /* for the first pdGain, start from index 0 */
 481                 else
 482                         ss = (pPdGainBoundaries[ii-1] - Pmin_t2[ii]) -
 483                                 pdGainOverlap_t2;
 484                 Vpd_step = (uint16_t)(VpdTable_I[ii][1] - VpdTable_I[ii][0]);
 485                 Vpd_step = (uint16_t)((Vpd_step < 1) ? 1 : Vpd_step);
 486                 /*
 487                  *-ve ss indicates need to extrapolate data below for this pdGain
 488                  */
 489                 while (ss < 0) {
 490                         tmpVal = (int16_t)(VpdTable_I[ii][0] + ss*Vpd_step);
 491                         pPDADCValues[kk++] = (uint16_t)((tmpVal < 0) ? 0 : tmpVal);
 492                         ss++;
 493                 }
 494
 495                 sizeCurrVpdTable = Pmax_t2[ii] - Pmin_t2[ii];
 496                 tgtIndex = pPdGainBoundaries[ii] + pdGainOverlap_t2 - Pmin_t2[ii];
 497                 maxIndex = (tgtIndex < sizeCurrVpdTable) ? tgtIndex : sizeCurrVpdTable;
 498
 499                 while (ss < (int16_t)maxIndex)
 500                         pPDADCValues[kk++] = VpdTable_I[ii][ss++];
 501
 502                 Vpd_step = (uint16_t)(VpdTable_I[ii][sizeCurrVpdTable-1] -
 503                                        VpdTable_I[ii][sizeCurrVpdTable-2]);
 504                 Vpd_step = (uint16_t)((Vpd_step < 1) ? 1 : Vpd_step);
 505                 /*
 506                  * for last gain, pdGainBoundary == Pmax_t2, so will
 507                  * have to extrapolate
 508                  */
 509                 if (tgtIndex > maxIndex) {      /* need to extrapolate above */
 510                         while(ss < (int16_t)tgtIndex) {
 511                                 tmpVal = (uint16_t)
 512                                         (VpdTable_I[ii][sizeCurrVpdTable-1] +
 513                                          (ss-maxIndex)*Vpd_step);
 514                                 pPDADCValues[kk++] = (tmpVal > 127) ?
 515                                         127 : tmpVal;
 516                                 ss++;
 517                         }
 518                 }                               /* extrapolated above */
 519         }                                       /* for all pdGainUsed */
 520
 521         while (ii < MAX_NUM_PDGAINS_PER_CHANNEL) {
 522                 pPdGainBoundaries[ii] = pPdGainBoundaries[ii-1];
 523                 ii++;
 524         }
 525         while (kk < 128) {
 526                 pPDADCValues[kk] = pPDADCValues[kk-1];
 527                 kk++;
 528         }
 529
 530         return numPdGainsUsed;
 531 #undef VpdTable_L
 532 #undef VpdTable_R
 533 #undef VpdTable_I
 534 }
 535
 536 static HAL_BOOL
 537 ar5413SetPowerTable(struct ath_hal *ah,
 538         int16_t *minPower, int16_t *maxPower,
 539         const struct ieee80211_channel *chan,
 540         uint16_t *rfXpdGain)
 541 {
 542         struct ath_hal_5212 *ahp = AH5212(ah);
 543         uint16_t freq = ath_hal_gethwchannel(ah, chan);
 544         const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom;
 545         const RAW_DATA_STRUCT_2413 *pRawDataset = AH_NULL;
 546         uint16_t pdGainOverlap_t2;
 547         int16_t minCalPower5413_t2;
 548         uint16_t *pdadcValues = ahp->ah_pcdacTable;
 549         uint16_t gainBoundaries[4];
 550         uint32_t reg32, regoffset;
 551         int i, numPdGainsUsed;
 552 #ifndef AH_USE_INIPDGAIN
 553         uint32_t tpcrg1;
 554 #endif
 555
 556         HALDEBUG(ah, HAL_DEBUG_RFPARAM, "%s: chan 0x%x flag 0x%x\n",
 557             __func__, chan->ic_freq, chan->ic_flags);
 558
 559         if (IEEE80211_IS_CHAN_G(chan) || IEEE80211_IS_CHAN_108G(chan))
 560                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11G];
 561         else if (IEEE80211_IS_CHAN_B(chan))
 562                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11B];
 563         else {
 564                 HALASSERT(IEEE80211_IS_CHAN_5GHZ(chan));
 565                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11A];
 566         }
 567
 568         pdGainOverlap_t2 = (uint16_t) SM(OS_REG_READ(ah, AR_PHY_TPCRG5),
 569                                           AR_PHY_TPCRG5_PD_GAIN_OVERLAP);
 570
 571         numPdGainsUsed = ar5413getGainBoundariesAndPdadcsForPowers(ah,
 572                 freq, pRawDataset, pdGainOverlap_t2,
 573                 &minCalPower5413_t2,gainBoundaries, rfXpdGain, pdadcValues);
 574         HALASSERT(1 <= numPdGainsUsed && numPdGainsUsed <= 3);
 575
 576 #ifdef AH_USE_INIPDGAIN
 577         /*
 578          * Use pd_gains curve from eeprom; Atheros always uses
 579          * the default curve from the ini file but some vendors
 580          * (e.g. Zcomax) want to override this curve and not
 581          * honoring their settings results in tx power 5dBm low.
 582          */
 583         OS_REG_RMW_FIELD(ah, AR_PHY_TPCRG1, AR_PHY_TPCRG1_NUM_PD_GAIN,
 584                          (pRawDataset->pDataPerChannel[0].numPdGains - 1));
 585 #else
 586         tpcrg1 = OS_REG_READ(ah, AR_PHY_TPCRG1);
 587         tpcrg1 = (tpcrg1 &~ AR_PHY_TPCRG1_NUM_PD_GAIN)
 588                   | SM(numPdGainsUsed-1, AR_PHY_TPCRG1_NUM_PD_GAIN);
 589         switch (numPdGainsUsed) {
 590         case 3:
 591                 tpcrg1 &= ~AR_PHY_TPCRG1_PDGAIN_SETTING3;
 592                 tpcrg1 |= SM(rfXpdGain[2], AR_PHY_TPCRG1_PDGAIN_SETTING3);
 593                 /* fall thru... */
 594         case 2:
 595                 tpcrg1 &= ~AR_PHY_TPCRG1_PDGAIN_SETTING2;
 596                 tpcrg1 |= SM(rfXpdGain[1], AR_PHY_TPCRG1_PDGAIN_SETTING2);
 597                 /* fall thru... */
 598         case 1:
 599                 tpcrg1 &= ~AR_PHY_TPCRG1_PDGAIN_SETTING1;
 600                 tpcrg1 |= SM(rfXpdGain[0], AR_PHY_TPCRG1_PDGAIN_SETTING1);
 601                 break;
 602         }
 603 #ifdef AH_DEBUG
 604         if (tpcrg1 != OS_REG_READ(ah, AR_PHY_TPCRG1))
 605                 HALDEBUG(ah, HAL_DEBUG_RFPARAM, "%s: using non-default "
 606                     "pd_gains (default 0x%x, calculated 0x%x)\n",
 607                     __func__, OS_REG_READ(ah, AR_PHY_TPCRG1), tpcrg1);
 608 #endif
 609         OS_REG_WRITE(ah, AR_PHY_TPCRG1, tpcrg1);
 610 #endif
 611
 612         /*
 613          * Note the pdadc table may not start at 0 dBm power, could be
 614          * negative or greater than 0.  Need to offset the power
 615          * values by the amount of minPower for griffin
 616          */
 617         if (minCalPower5413_t2 != 0)
 618                 ahp->ah_txPowerIndexOffset = (int16_t)(0 - minCalPower5413_t2);
 619         else
 620                 ahp->ah_txPowerIndexOffset = 0;
 621
 622         /* Finally, write the power values into the baseband power table */
 623         regoffset = 0x9800 + (672 <<2); /* beginning of pdadc table in griffin */
 624         for (i = 0; i < 32; i++) {
 625                 reg32 = ((pdadcValues[4*i + 0] & 0xFF) << 0)  |
 626                         ((pdadcValues[4*i + 1] & 0xFF) << 8)  |
 627                         ((pdadcValues[4*i + 2] & 0xFF) << 16) |
 628                         ((pdadcValues[4*i + 3] & 0xFF) << 24) ;
 629                 OS_REG_WRITE(ah, regoffset, reg32);
 630                 regoffset += 4;
 631         }
 632
 633         OS_REG_WRITE(ah, AR_PHY_TPCRG5,
 634                      SM(pdGainOverlap_t2, AR_PHY_TPCRG5_PD_GAIN_OVERLAP) |
 635                      SM(gainBoundaries[0], AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_1) |
 636                      SM(gainBoundaries[1], AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_2) |
 637                      SM(gainBoundaries[2], AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_3) |
 638                      SM(gainBoundaries[3], AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_4));
 639
 640         return AH_TRUE;
 641 }
 642
 643 static int16_t
 644 ar5413GetMinPower(struct ath_hal *ah, const RAW_DATA_PER_CHANNEL_2413 *data)
 645 {
 646         uint32_t ii,jj;
 647         uint16_t Pmin=0,numVpd;
 648
 649         for (ii = 0; ii < MAX_NUM_PDGAINS_PER_CHANNEL; ii++) {
 650                 jj = MAX_NUM_PDGAINS_PER_CHANNEL - ii - 1;
 651                 /* work backwards 'cause highest pdGain for lowest power */
 652                 numVpd = data->pDataPerPDGain[jj].numVpd;
 653                 if (numVpd > 0) {
 654                         Pmin = data->pDataPerPDGain[jj].pwr_t4[0];
 655                         return(Pmin);
 656                 }
 657         }
 658         return(Pmin);
 659 }
 660
 661 static int16_t
 662 ar5413GetMaxPower(struct ath_hal *ah, const RAW_DATA_PER_CHANNEL_2413 *data)
 663 {
 664         uint32_t ii;
 665         uint16_t Pmax=0,numVpd;
 666
 667         for (ii=0; ii< MAX_NUM_PDGAINS_PER_CHANNEL; ii++) {
 668                 /* work forwards cuase lowest pdGain for highest power */
 669                 numVpd = data->pDataPerPDGain[ii].numVpd;
 670                 if (numVpd > 0) {
 671                         Pmax = data->pDataPerPDGain[ii].pwr_t4[numVpd-1];
 672                         return(Pmax);
 673                 }
 674         }
 675         return(Pmax);
 676 }
 677
 678 static HAL_BOOL
 679 ar5413GetChannelMaxMinPower(struct ath_hal *ah,
 680         const struct ieee80211_channel *chan,
 681         int16_t *maxPow, int16_t *minPow)
 682 {
 683         uint16_t freq = chan->ic_freq;          /* NB: never mapped */
 684         const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom;
 685         const RAW_DATA_STRUCT_2413 *pRawDataset = AH_NULL;
 686         const RAW_DATA_PER_CHANNEL_2413 *data=AH_NULL;
 687         uint16_t numChannels;
 688         int totalD,totalF, totalMin,last, i;
 689
 690         *maxPow = 0;
 691
 692         if (IEEE80211_IS_CHAN_G(chan) || IEEE80211_IS_CHAN_108G(chan))
 693                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11G];
 694         else if (IEEE80211_IS_CHAN_B(chan))
 695                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11B];
 696         else {
 697                 HALASSERT(IEEE80211_IS_CHAN_5GHZ(chan));
 698                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11A];
 699         }
 700
 701         numChannels = pRawDataset->numChannels;
 702         data = pRawDataset->pDataPerChannel;
 703
 704         /* Make sure the channel is in the range of the TP values
 705          *  (freq piers)
 706          */
 707         if (numChannels < 1)
 708                 return(AH_FALSE);
 709
 710         if ((freq < data[0].channelValue) ||
 711             (freq > data[numChannels-1].channelValue)) {
 712                 if (freq < data[0].channelValue) {
 713                         *maxPow = ar5413GetMaxPower(ah, &data[0]);
 714                         *minPow = ar5413GetMinPower(ah, &data[0]);
 715                         return(AH_TRUE);
 716                 } else {
 717                         *maxPow = ar5413GetMaxPower(ah, &data[numChannels - 1]);
 718                         *minPow = ar5413GetMinPower(ah, &data[numChannels - 1]);
 719                         return(AH_TRUE);
 720                 }
 721         }
 722
 723         /* Linearly interpolate the power value now */
 724         for (last=0,i=0; (i<numChannels) && (freq > data[i].channelValue);
 725              last = i++);
 726         totalD = data[i].channelValue - data[last].channelValue;
 727         if (totalD > 0) {
 728                 totalF = ar5413GetMaxPower(ah, &data[i]) - ar5413GetMaxPower(ah, &data[last]);
 729                 *maxPow = (int8_t) ((totalF*(freq-data[last].channelValue) +
 730                                      ar5413GetMaxPower(ah, &data[last])*totalD)/totalD);
 731                 totalMin = ar5413GetMinPower(ah, &data[i]) - ar5413GetMinPower(ah, &data[last]);
 732                 *minPow = (int8_t) ((totalMin*(freq-data[last].channelValue) +
 733                                      ar5413GetMinPower(ah, &data[last])*totalD)/totalD);
 734                 return(AH_TRUE);
 735         } else {
 736                 if (freq == data[i].channelValue) {
 737                         *maxPow = ar5413GetMaxPower(ah, &data[i]);
 738                         *minPow = ar5413GetMinPower(ah, &data[i]);
 739                         return(AH_TRUE);
 740                 } else
 741                         return(AH_FALSE);
 742         }
 743 }
 744
 745 /*
 746  * Free memory for analog bank scratch buffers
 747  */
 748 static void
 749 ar5413RfDetach(struct ath_hal *ah)
 750 {
 751         struct ath_hal_5212 *ahp = AH5212(ah);
 752
 753         HALASSERT(ahp->ah_rfHal != AH_NULL);
 754         ath_hal_free(ahp->ah_rfHal);
 755         ahp->ah_rfHal = AH_NULL;
 756 }
 757
 758 /*
 759  * Allocate memory for analog bank scratch buffers
 760  * Scratch Buffer will be reinitialized every reset so no need to zero now
 761  */
 762 static HAL_BOOL
 763 ar5413RfAttach(struct ath_hal *ah, HAL_STATUS *status)
 764 {
 765         struct ath_hal_5212 *ahp = AH5212(ah);
 766         struct ar5413State *priv;
 767
 768         HALASSERT(ah->ah_magic == AR5212_MAGIC);
 769
 770         HALASSERT(ahp->ah_rfHal == AH_NULL);
 771         priv = ath_hal_malloc(sizeof(struct ar5413State));
 772         if (priv == AH_NULL) {
 773                 HALDEBUG(ah, HAL_DEBUG_ANY,
 774                     "%s: cannot allocate private state\n", __func__);
 775                 *status = HAL_ENOMEM;           /* XXX */
 776                 return AH_FALSE;
 777         }
 778         priv->base.rfDetach             = ar5413RfDetach;
 779         priv->base.writeRegs            = ar5413WriteRegs;
 780         priv->base.getRfBank            = ar5413GetRfBank;
 781         priv->base.setChannel           = ar5413SetChannel;
 782         priv->base.setRfRegs            = ar5413SetRfRegs;
 783         priv->base.setPowerTable        = ar5413SetPowerTable;
 784         priv->base.getChannelMaxMinPower = ar5413GetChannelMaxMinPower;
 785         priv->base.getNfAdjust          = ar5212GetNfAdjust;
 786
 787         ahp->ah_pcdacTable = priv->pcdacTable;
 788         ahp->ah_pcdacTableSize = sizeof(priv->pcdacTable);
 789         ahp->ah_rfHal = &priv->base;
 790
 791         return AH_TRUE;
 792 }
 793
 794 static HAL_BOOL
 795 ar5413Probe(struct ath_hal *ah)
 796 {
 797         return IS_5413(ah);
 798 }
 799 AH_RF(RF5413, ar5413Probe, ar5413RfAttach);