sys/dev/ath/ath_hal/ar5212/ar2413.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  * $FreeBSD$
  18  */
  19 #include "opt_ah.h"
  20
  21 #include "ah.h"
  22 #include "ah_internal.h"
  23
  24 #include "ar5212/ar5212.h"
  25 #include "ar5212/ar5212reg.h"
  26 #include "ar5212/ar5212phy.h"
  27
  28 #include "ah_eeprom_v3.h"
  29
  30 #define AH_5212_2413
  31 #include "ar5212/ar5212.ini"
  32
  33 #define N(a)    (sizeof(a)/sizeof(a[0]))
  34
  35 struct ar2413State {
  36         RF_HAL_FUNCS    base;           /* public state, must be first */
  37         uint16_t        pcdacTable[PWR_TABLE_SIZE_2413];
  38
  39         uint32_t        Bank1Data[N(ar5212Bank1_2413)];
  40         uint32_t        Bank2Data[N(ar5212Bank2_2413)];
  41         uint32_t        Bank3Data[N(ar5212Bank3_2413)];
  42         uint32_t        Bank6Data[N(ar5212Bank6_2413)];
  43         uint32_t        Bank7Data[N(ar5212Bank7_2413)];
  44
  45         /*
  46          * Private state for reduced stack usage.
  47          */
  48         /* filled out Vpd table for all pdGains (chanL) */
  49         uint16_t vpdTable_L[MAX_NUM_PDGAINS_PER_CHANNEL]
  50                             [MAX_PWR_RANGE_IN_HALF_DB];
  51         /* filled out Vpd table for all pdGains (chanR) */
  52         uint16_t vpdTable_R[MAX_NUM_PDGAINS_PER_CHANNEL]
  53                             [MAX_PWR_RANGE_IN_HALF_DB];
  54         /* filled out Vpd table for all pdGains (interpolated) */
  55         uint16_t vpdTable_I[MAX_NUM_PDGAINS_PER_CHANNEL]
  56                             [MAX_PWR_RANGE_IN_HALF_DB];
  57 };
  58 #define AR2413(ah)      ((struct ar2413State *) AH5212(ah)->ah_rfHal)
  59
  60 extern  void ar5212ModifyRfBuffer(uint32_t *rfBuf, uint32_t reg32,
  61                 uint32_t numBits, uint32_t firstBit, uint32_t column);
  62
  63 static void
  64 ar2413WriteRegs(struct ath_hal *ah, u_int modesIndex, u_int freqIndex,
  65         int writes)
  66 {
  67         HAL_INI_WRITE_ARRAY(ah, ar5212Modes_2413, modesIndex, writes);
  68         HAL_INI_WRITE_ARRAY(ah, ar5212Common_2413, 1, writes);
  69         HAL_INI_WRITE_ARRAY(ah, ar5212BB_RfGain_2413, freqIndex, writes);
  70 }
  71
  72 /*
  73  * Take the MHz channel value and set the Channel value
  74  *
  75  * ASSUMES: Writes enabled to analog bus
  76  */
  77 static HAL_BOOL
  78 ar2413SetChannel(struct ath_hal *ah, const struct ieee80211_channel *chan)
  79 {
  80         uint16_t freq = ath_hal_gethwchannel(ah, chan);
  81         uint32_t channelSel  = 0;
  82         uint32_t bModeSynth  = 0;
  83         uint32_t aModeRefSel = 0;
  84         uint32_t reg32       = 0;
  85
  86         OS_MARK(ah, AH_MARK_SETCHANNEL, freq);
  87
  88         if (freq < 4800) {
  89                 uint32_t txctl;
  90
  91                 if (((freq - 2192) % 5) == 0) {
  92                         channelSel = ((freq - 672) * 2 - 3040)/10;
  93                         bModeSynth = 0;
  94                 } else if (((freq - 2224) % 5) == 0) {
  95                         channelSel = ((freq - 704) * 2 - 3040) / 10;
  96                         bModeSynth = 1;
  97                 } else {
  98                         HALDEBUG(ah, HAL_DEBUG_ANY,
  99                             "%s: invalid channel %u MHz\n",
 100                             __func__, freq);
 101                         return AH_FALSE;
 102                 }
 103
 104                 channelSel = (channelSel << 2) & 0xff;
 105                 channelSel = ath_hal_reverseBits(channelSel, 8);
 106
 107                 txctl = OS_REG_READ(ah, AR_PHY_CCK_TX_CTRL);
 108                 if (freq == 2484) {
 109                         /* Enable channel spreading for channel 14 */
 110                         OS_REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
 111                                 txctl | AR_PHY_CCK_TX_CTRL_JAPAN);
 112                 } else {
 113                         OS_REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
 114                                 txctl &~ AR_PHY_CCK_TX_CTRL_JAPAN);
 115                 }
 116         } else if (((freq % 5) == 2) && (freq <= 5435)) {
 117                 freq = freq - 2; /* Align to even 5MHz raster */
 118                 channelSel = ath_hal_reverseBits(
 119                         (uint32_t)(((freq - 4800)*10)/25 + 1), 8);
 120                 aModeRefSel = ath_hal_reverseBits(0, 2);
 121         } else if ((freq % 20) == 0 && freq >= 5120) {
 122                 channelSel = ath_hal_reverseBits(
 123                         ((freq - 4800) / 20 << 2), 8);
 124                 aModeRefSel = ath_hal_reverseBits(3, 2);
 125         } else if ((freq % 10) == 0) {
 126                 channelSel = ath_hal_reverseBits(
 127                         ((freq - 4800) / 10 << 1), 8);
 128                 aModeRefSel = ath_hal_reverseBits(2, 2);
 129         } else if ((freq % 5) == 0) {
 130                 channelSel = ath_hal_reverseBits(
 131                         (freq - 4800) / 5, 8);
 132                 aModeRefSel = ath_hal_reverseBits(1, 2);
 133         } else {
 134                 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid channel %u MHz\n",
 135                     __func__, freq);
 136                 return AH_FALSE;
 137         }
 138
 139         reg32 = (channelSel << 4) | (aModeRefSel << 2) | (bModeSynth << 1) |
 140                         (1 << 12) | 0x1;
 141         OS_REG_WRITE(ah, AR_PHY(0x27), reg32 & 0xff);
 142
 143         reg32 >>= 8;
 144         OS_REG_WRITE(ah, AR_PHY(0x36), reg32 & 0x7f);
 145
 146         AH_PRIVATE(ah)->ah_curchan = chan;
 147
 148         return AH_TRUE;
 149 }
 150
 151 /*
 152  * Reads EEPROM header info from device structure and programs
 153  * all rf registers
 154  *
 155  * REQUIRES: Access to the analog rf device
 156  */
 157 static HAL_BOOL
 158 ar2413SetRfRegs(struct ath_hal *ah,
 159         const struct ieee80211_channel *chan,
 160         uint16_t modesIndex, uint16_t *rfXpdGain)
 161 {
 162 #define RF_BANK_SETUP(_priv, _ix, _col) do {                                \
 163         int i;                                                              \
 164         for (i = 0; i < N(ar5212Bank##_ix##_2413); i++)                     \
 165                 (_priv)->Bank##_ix##Data[i] = ar5212Bank##_ix##_2413[i][_col];\
 166 } while (0)
 167         struct ath_hal_5212 *ahp = AH5212(ah);
 168         const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom;
 169         uint16_t ob2GHz = 0, db2GHz = 0;
 170         struct ar2413State *priv = AR2413(ah);
 171         int regWrites = 0;
 172
 173         HALDEBUG(ah, HAL_DEBUG_RFPARAM, "%s: chan %u/0x%x modesIndex %u\n",
 174             __func__, chan->ic_freq, chan->ic_flags, modesIndex);
 175
 176         HALASSERT(priv);
 177
 178         /* Setup rf parameters */
 179         if (IEEE80211_IS_CHAN_B(chan)) {
 180                 ob2GHz = ee->ee_obFor24;
 181                 db2GHz = ee->ee_dbFor24;
 182         } else {
 183                 ob2GHz = ee->ee_obFor24g;
 184                 db2GHz = ee->ee_dbFor24g;
 185         }
 186
 187         /* Bank 1 Write */
 188         RF_BANK_SETUP(priv, 1, 1);
 189
 190         /* Bank 2 Write */
 191         RF_BANK_SETUP(priv, 2, modesIndex);
 192
 193         /* Bank 3 Write */
 194         RF_BANK_SETUP(priv, 3, modesIndex);
 195
 196         /* Bank 6 Write */
 197         RF_BANK_SETUP(priv, 6, modesIndex);
 198
 199         ar5212ModifyRfBuffer(priv->Bank6Data, ob2GHz,   3, 168, 0);
 200         ar5212ModifyRfBuffer(priv->Bank6Data, db2GHz,   3, 165, 0);
 201
 202         /* Bank 7 Setup */
 203         RF_BANK_SETUP(priv, 7, modesIndex);
 204
 205         /* Write Analog registers */
 206         HAL_INI_WRITE_BANK(ah, ar5212Bank1_2413, priv->Bank1Data, regWrites);
 207         HAL_INI_WRITE_BANK(ah, ar5212Bank2_2413, priv->Bank2Data, regWrites);
 208         HAL_INI_WRITE_BANK(ah, ar5212Bank3_2413, priv->Bank3Data, regWrites);
 209         HAL_INI_WRITE_BANK(ah, ar5212Bank6_2413, priv->Bank6Data, regWrites);
 210         HAL_INI_WRITE_BANK(ah, ar5212Bank7_2413, priv->Bank7Data, regWrites);
 211
 212         /* Now that we have reprogrammed rfgain value, clear the flag. */
 213         ahp->ah_rfgainState = HAL_RFGAIN_INACTIVE;
 214
 215         return AH_TRUE;
 216 #undef  RF_BANK_SETUP
 217 }
 218
 219 /*
 220  * Return a reference to the requested RF Bank.
 221  */
 222 static uint32_t *
 223 ar2413GetRfBank(struct ath_hal *ah, int bank)
 224 {
 225         struct ar2413State *priv = AR2413(ah);
 226
 227         HALASSERT(priv != AH_NULL);
 228         switch (bank) {
 229         case 1: return priv->Bank1Data;
 230         case 2: return priv->Bank2Data;
 231         case 3: return priv->Bank3Data;
 232         case 6: return priv->Bank6Data;
 233         case 7: return priv->Bank7Data;
 234         }
 235         HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unknown RF Bank %d requested\n",
 236             __func__, bank);
 237         return AH_NULL;
 238 }
 239
 240 /*
 241  * Return indices surrounding the value in sorted integer lists.
 242  *
 243  * NB: the input list is assumed to be sorted in ascending order
 244  */
 245 static void
 246 GetLowerUpperIndex(int16_t v, const uint16_t *lp, uint16_t listSize,
 247                           uint32_t *vlo, uint32_t *vhi)
 248 {
 249         int16_t target = v;
 250         const uint16_t *ep = lp+listSize;
 251         const uint16_t *tp;
 252
 253         /*
 254          * Check first and last elements for out-of-bounds conditions.
 255          */
 256         if (target < lp[0]) {
 257                 *vlo = *vhi = 0;
 258                 return;
 259         }
 260         if (target >= ep[-1]) {
 261                 *vlo = *vhi = listSize - 1;
 262                 return;
 263         }
 264
 265         /* look for value being near or between 2 values in list */
 266         for (tp = lp; tp < ep; tp++) {
 267                 /*
 268                  * If value is close to the current value of the list
 269                  * then target is not between values, it is one of the values
 270                  */
 271                 if (*tp == target) {
 272                         *vlo = *vhi = tp - (const uint16_t *) lp;
 273                         return;
 274                 }
 275                 /*
 276                  * Look for value being between current value and next value
 277                  * if so return these 2 values
 278                  */
 279                 if (target < tp[1]) {
 280                         *vlo = tp - (const uint16_t *) lp;
 281                         *vhi = *vlo + 1;
 282                         return;
 283                 }
 284         }
 285 }
 286
 287 /*
 288  * Fill the Vpdlist for indices Pmax-Pmin
 289  */
 290 static HAL_BOOL
 291 ar2413FillVpdTable(uint32_t pdGainIdx, int16_t Pmin, int16_t  Pmax,
 292                    const int16_t *pwrList, const uint16_t *VpdList,
 293                    uint16_t numIntercepts, uint16_t retVpdList[][64])
 294 {
 295         uint16_t ii, jj, kk;
 296         int16_t currPwr = (int16_t)(2*Pmin);
 297         /* since Pmin is pwr*2 and pwrList is 4*pwr */
 298         uint32_t  idxL, idxR;
 299
 300         ii = 0;
 301         jj = 0;
 302
 303         if (numIntercepts < 2)
 304                 return AH_FALSE;
 305
 306         while (ii <= (uint16_t)(Pmax - Pmin)) {
 307                 GetLowerUpperIndex(currPwr, (const uint16_t *) pwrList,
 308                                    numIntercepts, &(idxL), &(idxR));
 309                 if (idxR < 1)
 310                         idxR = 1;                       /* extrapolate below */
 311                 if (idxL == (uint32_t)(numIntercepts - 1))
 312                         idxL = numIntercepts - 2;       /* extrapolate above */
 313                 if (pwrList[idxL] == pwrList[idxR])
 314                         kk = VpdList[idxL];
 315                 else
 316                         kk = (uint16_t)
 317                                 (((currPwr - pwrList[idxL])*VpdList[idxR]+
 318                                   (pwrList[idxR] - currPwr)*VpdList[idxL])/
 319                                  (pwrList[idxR] - pwrList[idxL]));
 320                 retVpdList[pdGainIdx][ii] = kk;
 321                 ii++;
 322                 currPwr += 2;                           /* half dB steps */
 323         }
 324
 325         return AH_TRUE;
 326 }
 327
 328 /*
 329  * Returns interpolated or the scaled up interpolated value
 330  */
 331 static int16_t
 332 interpolate_signed(uint16_t target, uint16_t srcLeft, uint16_t srcRight,
 333         int16_t targetLeft, int16_t targetRight)
 334 {
 335         int16_t rv;
 336
 337         if (srcRight != srcLeft) {
 338                 rv = ((target - srcLeft)*targetRight +
 339                       (srcRight - target)*targetLeft) / (srcRight - srcLeft);
 340         } else {
 341                 rv = targetLeft;
 342         }
 343         return rv;
 344 }
 345
 346 /*
 347  * Uses the data points read from EEPROM to reconstruct the pdadc power table
 348  * Called by ar2413SetPowerTable()
 349  */
 350 static int
 351 ar2413getGainBoundariesAndPdadcsForPowers(struct ath_hal *ah, uint16_t channel,
 352                 const RAW_DATA_STRUCT_2413 *pRawDataset,
 353                 uint16_t pdGainOverlap_t2,
 354                 int16_t  *pMinCalPower, uint16_t pPdGainBoundaries[],
 355                 uint16_t pPdGainValues[], uint16_t pPDADCValues[])
 356 {
 357         struct ar2413State *priv = AR2413(ah);
 358 #define VpdTable_L      priv->vpdTable_L
 359 #define VpdTable_R      priv->vpdTable_R
 360 #define VpdTable_I      priv->vpdTable_I
 361         uint32_t ii, jj, kk;
 362         int32_t ss;/* potentially -ve index for taking care of pdGainOverlap */
 363         uint32_t idxL, idxR;
 364         uint32_t numPdGainsUsed = 0;
 365         /*
 366          * If desired to support -ve power levels in future, just
 367          * change pwr_I_0 to signed 5-bits.
 368          */
 369         int16_t Pmin_t2[MAX_NUM_PDGAINS_PER_CHANNEL];
 370         /* to accomodate -ve power levels later on. */
 371         int16_t Pmax_t2[MAX_NUM_PDGAINS_PER_CHANNEL];
 372         /* to accomodate -ve power levels later on */
 373         uint16_t numVpd = 0;
 374         uint16_t Vpd_step;
 375         int16_t tmpVal ;
 376         uint32_t sizeCurrVpdTable, maxIndex, tgtIndex;
 377
 378         /* Get upper lower index */
 379         GetLowerUpperIndex(channel, pRawDataset->pChannels,
 380                                  pRawDataset->numChannels, &(idxL), &(idxR));
 381
 382         for (ii = 0; ii < MAX_NUM_PDGAINS_PER_CHANNEL; ii++) {
 383                 jj = MAX_NUM_PDGAINS_PER_CHANNEL - ii - 1;
 384                 /* work backwards 'cause highest pdGain for lowest power */
 385                 numVpd = pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].numVpd;
 386                 if (numVpd > 0) {
 387                         pPdGainValues[numPdGainsUsed] = pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].pd_gain;
 388                         Pmin_t2[numPdGainsUsed] = pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].pwr_t4[0];
 389                         if (Pmin_t2[numPdGainsUsed] >pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[0]) {
 390                                 Pmin_t2[numPdGainsUsed] = pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[0];
 391                         }
 392                         Pmin_t2[numPdGainsUsed] = (int16_t)
 393                                 (Pmin_t2[numPdGainsUsed] / 2);
 394                         Pmax_t2[numPdGainsUsed] = pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].pwr_t4[numVpd-1];
 395                         if (Pmax_t2[numPdGainsUsed] > pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[numVpd-1])
 396                                 Pmax_t2[numPdGainsUsed] =
 397                                         pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[numVpd-1];
 398                         Pmax_t2[numPdGainsUsed] = (int16_t)(Pmax_t2[numPdGainsUsed] / 2);
 399                         ar2413FillVpdTable(
 400                                            numPdGainsUsed, Pmin_t2[numPdGainsUsed], Pmax_t2[numPdGainsUsed],
 401                                            &(pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].pwr_t4[0]),
 402                                            &(pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].Vpd[0]), numVpd, VpdTable_L
 403                                            );
 404                         ar2413FillVpdTable(
 405                                            numPdGainsUsed, Pmin_t2[numPdGainsUsed], Pmax_t2[numPdGainsUsed],
 406                                            &(pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[0]),
 407                                            &(pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].Vpd[0]), numVpd, VpdTable_R
 408                                            );
 409                         for (kk = 0; kk < (uint16_t)(Pmax_t2[numPdGainsUsed] - Pmin_t2[numPdGainsUsed]); kk++) {
 410                                 VpdTable_I[numPdGainsUsed][kk] =
 411                                         interpolate_signed(
 412                                                            channel, pRawDataset->pChannels[idxL], pRawDataset->pChannels[idxR],
 413                                                            (int16_t)VpdTable_L[numPdGainsUsed][kk], (int16_t)VpdTable_R[numPdGainsUsed][kk]);
 414                         }
 415                         /* fill VpdTable_I for this pdGain */
 416                         numPdGainsUsed++;
 417                 }
 418                 /* if this pdGain is used */
 419         }
 420
 421         *pMinCalPower = Pmin_t2[0];
 422         kk = 0; /* index for the final table */
 423         for (ii = 0; ii < numPdGainsUsed; ii++) {
 424                 if (ii == (numPdGainsUsed - 1))
 425                         pPdGainBoundaries[ii] = Pmax_t2[ii] +
 426                                 PD_GAIN_BOUNDARY_STRETCH_IN_HALF_DB;
 427                 else
 428                         pPdGainBoundaries[ii] = (uint16_t)
 429                                 ((Pmax_t2[ii] + Pmin_t2[ii+1]) / 2 );
 430                 if (pPdGainBoundaries[ii] > 63) {
 431                         HALDEBUG(ah, HAL_DEBUG_ANY,
 432                             "%s: clamp pPdGainBoundaries[%d] %d\n",
 433                             __func__, ii, pPdGainBoundaries[ii]);/*XXX*/
 434                         pPdGainBoundaries[ii] = 63;
 435                 }
 436
 437                 /* Find starting index for this pdGain */
 438                 if (ii == 0)
 439                         ss = 0; /* for the first pdGain, start from index 0 */
 440                 else
 441                         ss = (pPdGainBoundaries[ii-1] - Pmin_t2[ii]) -
 442                                 pdGainOverlap_t2;
 443                 Vpd_step = (uint16_t)(VpdTable_I[ii][1] - VpdTable_I[ii][0]);
 444                 Vpd_step = (uint16_t)((Vpd_step < 1) ? 1 : Vpd_step);
 445                 /*
 446                  *-ve ss indicates need to extrapolate data below for this pdGain
 447                  */
 448                 while (ss < 0) {
 449                         tmpVal = (int16_t)(VpdTable_I[ii][0] + ss*Vpd_step);
 450                         pPDADCValues[kk++] = (uint16_t)((tmpVal < 0) ? 0 : tmpVal);
 451                         ss++;
 452                 }
 453
 454                 sizeCurrVpdTable = Pmax_t2[ii] - Pmin_t2[ii];
 455                 tgtIndex = pPdGainBoundaries[ii] + pdGainOverlap_t2 - Pmin_t2[ii];
 456                 maxIndex = (tgtIndex < sizeCurrVpdTable) ? tgtIndex : sizeCurrVpdTable;
 457
 458                 while (ss < (int16_t)maxIndex)
 459                         pPDADCValues[kk++] = VpdTable_I[ii][ss++];
 460
 461                 Vpd_step = (uint16_t)(VpdTable_I[ii][sizeCurrVpdTable-1] -
 462                                        VpdTable_I[ii][sizeCurrVpdTable-2]);
 463                 Vpd_step = (uint16_t)((Vpd_step < 1) ? 1 : Vpd_step);
 464                 /*
 465                  * for last gain, pdGainBoundary == Pmax_t2, so will
 466                  * have to extrapolate
 467                  */
 468                 if (tgtIndex > maxIndex) {      /* need to extrapolate above */
 469                         while(ss < (int16_t)tgtIndex) {
 470                                 tmpVal = (uint16_t)
 471                                         (VpdTable_I[ii][sizeCurrVpdTable-1] +
 472                                          (ss-maxIndex)*Vpd_step);
 473                                 pPDADCValues[kk++] = (tmpVal > 127) ?
 474                                         127 : tmpVal;
 475                                 ss++;
 476                         }
 477                 }                               /* extrapolated above */
 478         }                                       /* for all pdGainUsed */
 479
 480         while (ii < MAX_NUM_PDGAINS_PER_CHANNEL) {
 481                 pPdGainBoundaries[ii] = pPdGainBoundaries[ii-1];
 482                 ii++;
 483         }
 484         while (kk < 128) {
 485                 pPDADCValues[kk] = pPDADCValues[kk-1];
 486                 kk++;
 487         }
 488
 489         return numPdGainsUsed;
 490 #undef VpdTable_L
 491 #undef VpdTable_R
 492 #undef VpdTable_I
 493 }
 494
 495 static HAL_BOOL
 496 ar2413SetPowerTable(struct ath_hal *ah,
 497         int16_t *minPower, int16_t *maxPower,
 498         const struct ieee80211_channel *chan,
 499         uint16_t *rfXpdGain)
 500 {
 501         uint16_t freq = ath_hal_gethwchannel(ah, chan);
 502         struct ath_hal_5212 *ahp = AH5212(ah);
 503         const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom;
 504         const RAW_DATA_STRUCT_2413 *pRawDataset = AH_NULL;
 505         uint16_t pdGainOverlap_t2;
 506         int16_t minCalPower2413_t2;
 507         uint16_t *pdadcValues = ahp->ah_pcdacTable;
 508         uint16_t gainBoundaries[4];
 509         uint32_t reg32, regoffset;
 510         int i, numPdGainsUsed;
 511 #ifndef AH_USE_INIPDGAIN
 512         uint32_t tpcrg1;
 513 #endif
 514
 515         HALDEBUG(ah, HAL_DEBUG_RFPARAM, "%s: chan 0x%x flag 0x%x\n",
 516             __func__, freq, chan->ic_flags);
 517
 518         if (IEEE80211_IS_CHAN_G(chan) || IEEE80211_IS_CHAN_108G(chan))
 519                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11G];
 520         else if (IEEE80211_IS_CHAN_B(chan))
 521                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11B];
 522         else {
 523                 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: illegal mode\n", __func__);
 524                 return AH_FALSE;
 525         }
 526
 527         pdGainOverlap_t2 = (uint16_t) SM(OS_REG_READ(ah, AR_PHY_TPCRG5),
 528                                           AR_PHY_TPCRG5_PD_GAIN_OVERLAP);
 529
 530         numPdGainsUsed = ar2413getGainBoundariesAndPdadcsForPowers(ah,
 531                 freq, pRawDataset, pdGainOverlap_t2,
 532                 &minCalPower2413_t2,gainBoundaries, rfXpdGain, pdadcValues);
 533         HALASSERT(1 <= numPdGainsUsed && numPdGainsUsed <= 3);
 534
 535 #ifdef AH_USE_INIPDGAIN
 536         /*
 537          * Use pd_gains curve from eeprom; Atheros always uses
 538          * the default curve from the ini file but some vendors
 539          * (e.g. Zcomax) want to override this curve and not
 540          * honoring their settings results in tx power 5dBm low.
 541          */
 542         OS_REG_RMW_FIELD(ah, AR_PHY_TPCRG1, AR_PHY_TPCRG1_NUM_PD_GAIN,
 543                          (pRawDataset->pDataPerChannel[0].numPdGains - 1));
 544 #else
 545         tpcrg1 = OS_REG_READ(ah, AR_PHY_TPCRG1);
 546         tpcrg1 = (tpcrg1 &~ AR_PHY_TPCRG1_NUM_PD_GAIN)
 547                   | SM(numPdGainsUsed-1, AR_PHY_TPCRG1_NUM_PD_GAIN);
 548         switch (numPdGainsUsed) {
 549         case 3:
 550                 tpcrg1 &= ~AR_PHY_TPCRG1_PDGAIN_SETTING3;
 551                 tpcrg1 |= SM(rfXpdGain[2], AR_PHY_TPCRG1_PDGAIN_SETTING3);
 552                 /* fall thru... */
 553         case 2:
 554                 tpcrg1 &= ~AR_PHY_TPCRG1_PDGAIN_SETTING2;
 555                 tpcrg1 |= SM(rfXpdGain[1], AR_PHY_TPCRG1_PDGAIN_SETTING2);
 556                 /* fall thru... */
 557         case 1:
 558                 tpcrg1 &= ~AR_PHY_TPCRG1_PDGAIN_SETTING1;
 559                 tpcrg1 |= SM(rfXpdGain[0], AR_PHY_TPCRG1_PDGAIN_SETTING1);
 560                 break;
 561         }
 562 #ifdef AH_DEBUG
 563         if (tpcrg1 != OS_REG_READ(ah, AR_PHY_TPCRG1))
 564                 HALDEBUG(ah, HAL_DEBUG_RFPARAM, "%s: using non-default "
 565                     "pd_gains (default 0x%x, calculated 0x%x)\n",
 566                     __func__, OS_REG_READ(ah, AR_PHY_TPCRG1), tpcrg1);
 567 #endif
 568         OS_REG_WRITE(ah, AR_PHY_TPCRG1, tpcrg1);
 569 #endif
 570
 571         /*
 572          * Note the pdadc table may not start at 0 dBm power, could be
 573          * negative or greater than 0.  Need to offset the power
 574          * values by the amount of minPower for griffin
 575          */
 576         if (minCalPower2413_t2 != 0)
 577                 ahp->ah_txPowerIndexOffset = (int16_t)(0 - minCalPower2413_t2);
 578         else
 579                 ahp->ah_txPowerIndexOffset = 0;
 580
 581         /* Finally, write the power values into the baseband power table */
 582         regoffset = 0x9800 + (672 <<2); /* beginning of pdadc table in griffin */
 583         for (i = 0; i < 32; i++) {
 584                 reg32 = ((pdadcValues[4*i + 0] & 0xFF) << 0)  |
 585                         ((pdadcValues[4*i + 1] & 0xFF) << 8)  |
 586                         ((pdadcValues[4*i + 2] & 0xFF) << 16) |
 587                         ((pdadcValues[4*i + 3] & 0xFF) << 24) ;
 588                 OS_REG_WRITE(ah, regoffset, reg32);
 589                 regoffset += 4;
 590         }
 591
 592         OS_REG_WRITE(ah, AR_PHY_TPCRG5,
 593                      SM(pdGainOverlap_t2, AR_PHY_TPCRG5_PD_GAIN_OVERLAP) |
 594                      SM(gainBoundaries[0], AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_1) |
 595                      SM(gainBoundaries[1], AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_2) |
 596                      SM(gainBoundaries[2], AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_3) |
 597                      SM(gainBoundaries[3], AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_4));
 598
 599         return AH_TRUE;
 600 }
 601
 602 static int16_t
 603 ar2413GetMinPower(struct ath_hal *ah, const RAW_DATA_PER_CHANNEL_2413 *data)
 604 {
 605         uint32_t ii,jj;
 606         uint16_t Pmin=0,numVpd;
 607
 608         for (ii = 0; ii < MAX_NUM_PDGAINS_PER_CHANNEL; ii++) {
 609                 jj = MAX_NUM_PDGAINS_PER_CHANNEL - ii - 1;
 610                 /* work backwards 'cause highest pdGain for lowest power */
 611                 numVpd = data->pDataPerPDGain[jj].numVpd;
 612                 if (numVpd > 0) {
 613                         Pmin = data->pDataPerPDGain[jj].pwr_t4[0];
 614                         return(Pmin);
 615                 }
 616         }
 617         return(Pmin);
 618 }
 619
 620 static int16_t
 621 ar2413GetMaxPower(struct ath_hal *ah, const RAW_DATA_PER_CHANNEL_2413 *data)
 622 {
 623         uint32_t ii;
 624         uint16_t Pmax=0,numVpd;
 625
 626         for (ii=0; ii< MAX_NUM_PDGAINS_PER_CHANNEL; ii++) {
 627                 /* work forwards cuase lowest pdGain for highest power */
 628                 numVpd = data->pDataPerPDGain[ii].numVpd;
 629                 if (numVpd > 0) {
 630                         Pmax = data->pDataPerPDGain[ii].pwr_t4[numVpd-1];
 631                         return(Pmax);
 632                 }
 633         }
 634         return(Pmax);
 635 }
 636
 637 static HAL_BOOL
 638 ar2413GetChannelMaxMinPower(struct ath_hal *ah,
 639         const struct ieee80211_channel *chan,
 640         int16_t *maxPow, int16_t *minPow)
 641 {
 642         uint16_t freq = chan->ic_freq;          /* NB: never mapped */
 643         const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom;
 644         const RAW_DATA_STRUCT_2413 *pRawDataset = AH_NULL;
 645         const RAW_DATA_PER_CHANNEL_2413 *data = AH_NULL;
 646         uint16_t numChannels;
 647         int totalD,totalF, totalMin,last, i;
 648
 649         *maxPow = 0;
 650
 651         if (IEEE80211_IS_CHAN_G(chan) || IEEE80211_IS_CHAN_108G(chan))
 652                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11G];
 653         else if (IEEE80211_IS_CHAN_B(chan))
 654                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11B];
 655         else
 656                 return(AH_FALSE);
 657
 658         numChannels = pRawDataset->numChannels;
 659         data = pRawDataset->pDataPerChannel;
 660
 661         /* Make sure the channel is in the range of the TP values
 662          *  (freq piers)
 663          */
 664         if (numChannels < 1)
 665                 return(AH_FALSE);
 666
 667         if ((freq < data[0].channelValue) ||
 668             (freq > data[numChannels-1].channelValue)) {
 669                 if (freq < data[0].channelValue) {
 670                         *maxPow = ar2413GetMaxPower(ah, &data[0]);
 671                         *minPow = ar2413GetMinPower(ah, &data[0]);
 672                         return(AH_TRUE);
 673                 } else {
 674                         *maxPow = ar2413GetMaxPower(ah, &data[numChannels - 1]);
 675                         *minPow = ar2413GetMinPower(ah, &data[numChannels - 1]);
 676                         return(AH_TRUE);
 677                 }
 678         }
 679
 680         /* Linearly interpolate the power value now */
 681         for (last=0,i=0; (i<numChannels) && (freq > data[i].channelValue);
 682              last = i++);
 683         totalD = data[i].channelValue - data[last].channelValue;
 684         if (totalD > 0) {
 685                 totalF = ar2413GetMaxPower(ah, &data[i]) - ar2413GetMaxPower(ah, &data[last]);
 686                 *maxPow = (int8_t) ((totalF*(freq-data[last].channelValue) +
 687                                      ar2413GetMaxPower(ah, &data[last])*totalD)/totalD);
 688                 totalMin = ar2413GetMinPower(ah, &data[i]) - ar2413GetMinPower(ah, &data[last]);
 689                 *minPow = (int8_t) ((totalMin*(freq-data[last].channelValue) +
 690                                      ar2413GetMinPower(ah, &data[last])*totalD)/totalD);
 691                 return(AH_TRUE);
 692         } else {
 693                 if (freq == data[i].channelValue) {
 694                         *maxPow = ar2413GetMaxPower(ah, &data[i]);
 695                         *minPow = ar2413GetMinPower(ah, &data[i]);
 696                         return(AH_TRUE);
 697                 } else
 698                         return(AH_FALSE);
 699         }
 700 }
 701
 702 /*
 703  * Free memory for analog bank scratch buffers
 704  */
 705 static void
 706 ar2413RfDetach(struct ath_hal *ah)
 707 {
 708         struct ath_hal_5212 *ahp = AH5212(ah);
 709
 710         HALASSERT(ahp->ah_rfHal != AH_NULL);
 711         ath_hal_free(ahp->ah_rfHal);
 712         ahp->ah_rfHal = AH_NULL;
 713 }
 714
 715 /*
 716  * Allocate memory for analog bank scratch buffers
 717  * Scratch Buffer will be reinitialized every reset so no need to zero now
 718  */
 719 static HAL_BOOL
 720 ar2413RfAttach(struct ath_hal *ah, HAL_STATUS *status)
 721 {
 722         struct ath_hal_5212 *ahp = AH5212(ah);
 723         struct ar2413State *priv;
 724
 725         HALASSERT(ah->ah_magic == AR5212_MAGIC);
 726
 727         HALASSERT(ahp->ah_rfHal == AH_NULL);
 728         priv = ath_hal_malloc(sizeof(struct ar2413State));
 729         if (priv == AH_NULL) {
 730                 HALDEBUG(ah, HAL_DEBUG_ANY,
 731                     "%s: cannot allocate private state\n", __func__);
 732                 *status = HAL_ENOMEM;           /* XXX */
 733                 return AH_FALSE;
 734         }
 735         priv->base.rfDetach             = ar2413RfDetach;
 736         priv->base.writeRegs            = ar2413WriteRegs;
 737         priv->base.getRfBank            = ar2413GetRfBank;
 738         priv->base.setChannel           = ar2413SetChannel;
 739         priv->base.setRfRegs            = ar2413SetRfRegs;
 740         priv->base.setPowerTable        = ar2413SetPowerTable;
 741         priv->base.getChannelMaxMinPower = ar2413GetChannelMaxMinPower;
 742         priv->base.getNfAdjust          = ar5212GetNfAdjust;
 743
 744         ahp->ah_pcdacTable = priv->pcdacTable;
 745         ahp->ah_pcdacTableSize = sizeof(priv->pcdacTable);
 746         ahp->ah_rfHal = &priv->base;
 747
 748         return AH_TRUE;
 749 }
 750
 751 static HAL_BOOL
 752 ar2413Probe(struct ath_hal *ah)
 753 {
 754         return IS_2413(ah);
 755 }
 756 AH_RF(RF2413, ar2413Probe, ar2413RfAttach);