sys/dev/netif/ath/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  * $FreeBSD$
  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 #define N(a)    (sizeof(a)/sizeof(a[0]))
  34
  35 struct ar5413State {
  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_5413)];
  40         uint32_t        Bank2Data[N(ar5212Bank2_5413)];
  41         uint32_t        Bank3Data[N(ar5212Bank3_5413)];
  42         uint32_t        Bank6Data[N(ar5212Bank6_5413)];
  43         uint32_t        Bank7Data[N(ar5212Bank7_5413)];
  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 AR5413(ah)      ((struct ar5413State *) 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 ar5413WriteRegs(struct ath_hal *ah, u_int modesIndex, u_int freqIndex,
  65         int writes)
  66 {
  67         HAL_INI_WRITE_ARRAY(ah, ar5212Modes_5413, modesIndex, writes);
  68         HAL_INI_WRITE_ARRAY(ah, ar5212Common_5413, 1, writes);
  69         HAL_INI_WRITE_ARRAY(ah, ar5212BB_RfGain_5413, 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 ar5413SetChannel(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(1, 2);
 125         } else if ((freq % 10) == 0) {
 126                 channelSel = ath_hal_reverseBits(
 127                         ((freq - 4800) / 10 << 1), 8);
 128                 aModeRefSel = ath_hal_reverseBits(1, 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         return AH_TRUE;
 148 }
 149
 150 /*
 151  * Reads EEPROM header info from device structure and programs
 152  * all rf registers
 153  *
 154  * REQUIRES: Access to the analog rf device
 155  */
 156 static HAL_BOOL
 157 ar5413SetRfRegs(struct ath_hal *ah,
 158         const struct ieee80211_channel *chan,
 159         uint16_t modesIndex, uint16_t *rfXpdGain)
 160 {
 161 #define RF_BANK_SETUP(_priv, _ix, _col) do {                                \
 162         int i;                                                              \
 163         for (i = 0; i < N(ar5212Bank##_ix##_5413); i++)                     \
 164                 (_priv)->Bank##_ix##Data[i] = ar5212Bank##_ix##_5413[i][_col];\
 165 } while (0)
 166         struct ath_hal_5212 *ahp = AH5212(ah);
 167         uint16_t freq = ath_hal_gethwchannel(ah, chan);
 168         const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom;
 169         uint16_t ob5GHz = 0, db5GHz = 0;
 170         uint16_t ob2GHz = 0, db2GHz = 0;
 171         struct ar5413State *priv = AR5413(ah);
 172         int regWrites = 0;
 173
 174         HALDEBUG(ah, HAL_DEBUG_RFPARAM, "%s: chan %u/0x%x modesIndex %u\n",
 175             __func__, chan->ic_freq, chan->ic_flags, modesIndex);
 176
 177         HALASSERT(priv != AH_NULL);
 178
 179         /* Setup rf parameters */
 180         switch (chan->ic_flags & IEEE80211_CHAN_ALLFULL) {
 181         case IEEE80211_CHAN_A:
 182                 if (freq > 4000 && freq < 5260) {
 183                         ob5GHz = ee->ee_ob1;
 184                         db5GHz = ee->ee_db1;
 185                 } else if (freq >= 5260 && freq < 5500) {
 186                         ob5GHz = ee->ee_ob2;
 187                         db5GHz = ee->ee_db2;
 188                 } else if (freq >= 5500 && freq < 5725) {
 189                         ob5GHz = ee->ee_ob3;
 190                         db5GHz = ee->ee_db3;
 191                 } else if (freq >= 5725) {
 192                         ob5GHz = ee->ee_ob4;
 193                         db5GHz = ee->ee_db4;
 194                 } else {
 195                         /* XXX else */
 196                 }
 197                 break;
 198         case IEEE80211_CHAN_B:
 199                 ob2GHz = ee->ee_obFor24;
 200                 db2GHz = ee->ee_dbFor24;
 201                 break;
 202         case IEEE80211_CHAN_G:
 203         case IEEE80211_CHAN_PUREG:      /* NB: really 108G */
 204                 ob2GHz = ee->ee_obFor24g;
 205                 db2GHz = ee->ee_dbFor24g;
 206                 break;
 207         default:
 208                 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid channel flags 0x%x\n",
 209                     __func__, chan->ic_flags);
 210                 return AH_FALSE;
 211         }
 212
 213         /* Bank 1 Write */
 214         RF_BANK_SETUP(priv, 1, 1);
 215
 216         /* Bank 2 Write */
 217         RF_BANK_SETUP(priv, 2, modesIndex);
 218
 219         /* Bank 3 Write */
 220         RF_BANK_SETUP(priv, 3, modesIndex);
 221
 222         /* Bank 6 Write */
 223         RF_BANK_SETUP(priv, 6, modesIndex);
 224
 225         /* Only the 5 or 2 GHz OB/DB need to be set for a mode */
 226         if (IEEE80211_IS_CHAN_2GHZ(chan)) {
 227                 ar5212ModifyRfBuffer(priv->Bank6Data, ob2GHz, 3, 241, 0);
 228                 ar5212ModifyRfBuffer(priv->Bank6Data, db2GHz, 3, 238, 0);
 229
 230                         /* TODO - only for Eagle 1.0 2GHz - remove for production */
 231                         /* XXX: but without this bit G doesn't work. */
 232                         ar5212ModifyRfBuffer(priv->Bank6Data, 1 , 1, 291, 2);
 233
 234                         /* Optimum value for rf_pwd_iclobuf2G for PCIe chips only */
 235                         if (AH_PRIVATE(ah)->ah_ispcie) {
 236                                 ar5212ModifyRfBuffer(priv->Bank6Data, ath_hal_reverseBits(6, 3),
 237                                                  3, 131, 3);
 238                         }
 239         } else {
 240                 ar5212ModifyRfBuffer(priv->Bank6Data, ob5GHz, 3, 247, 0);
 241                 ar5212ModifyRfBuffer(priv->Bank6Data, db5GHz, 3, 244, 0);
 242
 243         }
 244
 245         /* Bank 7 Setup */
 246         RF_BANK_SETUP(priv, 7, modesIndex);
 247
 248         /* Write Analog registers */
 249         HAL_INI_WRITE_BANK(ah, ar5212Bank1_5413, priv->Bank1Data, regWrites);
 250         HAL_INI_WRITE_BANK(ah, ar5212Bank2_5413, priv->Bank2Data, regWrites);
 251         HAL_INI_WRITE_BANK(ah, ar5212Bank3_5413, priv->Bank3Data, regWrites);
 252         HAL_INI_WRITE_BANK(ah, ar5212Bank6_5413, priv->Bank6Data, regWrites);
 253         HAL_INI_WRITE_BANK(ah, ar5212Bank7_5413, priv->Bank7Data, regWrites);
 254
 255         /* Now that we have reprogrammed rfgain value, clear the flag. */
 256         ahp->ah_rfgainState = HAL_RFGAIN_INACTIVE;
 257
 258         return AH_TRUE;
 259 #undef  RF_BANK_SETUP
 260 }
 261
 262 /*
 263  * Return a reference to the requested RF Bank.
 264  */
 265 static uint32_t *
 266 ar5413GetRfBank(struct ath_hal *ah, int bank)
 267 {
 268         struct ar5413State *priv = AR5413(ah);
 269
 270         HALASSERT(priv != AH_NULL);
 271         switch (bank) {
 272         case 1: return priv->Bank1Data;
 273         case 2: return priv->Bank2Data;
 274         case 3: return priv->Bank3Data;
 275         case 6: return priv->Bank6Data;
 276         case 7: return priv->Bank7Data;
 277         }
 278         HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unknown RF Bank %d requested\n",
 279             __func__, bank);
 280         return AH_NULL;
 281 }
 282
 283 /*
 284  * Return indices surrounding the value in sorted integer lists.
 285  *
 286  * NB: the input list is assumed to be sorted in ascending order
 287  */
 288 static void
 289 GetLowerUpperIndex(int16_t v, const uint16_t *lp, uint16_t listSize,
 290                           uint32_t *vlo, uint32_t *vhi)
 291 {
 292         int16_t target = v;
 293         const uint16_t *ep = lp+listSize;
 294         const uint16_t *tp;
 295
 296         /*
 297          * Check first and last elements for out-of-bounds conditions.
 298          */
 299         if (target < lp[0]) {
 300                 *vlo = *vhi = 0;
 301                 return;
 302         }
 303         if (target >= ep[-1]) {
 304                 *vlo = *vhi = listSize - 1;
 305                 return;
 306         }
 307
 308         /* look for value being near or between 2 values in list */
 309         for (tp = lp; tp < ep; tp++) {
 310                 /*
 311                  * If value is close to the current value of the list
 312                  * then target is not between values, it is one of the values
 313                  */
 314                 if (*tp == target) {
 315                         *vlo = *vhi = tp - (const uint16_t *) lp;
 316                         return;
 317                 }
 318                 /*
 319                  * Look for value being between current value and next value
 320                  * if so return these 2 values
 321                  */
 322                 if (target < tp[1]) {
 323                         *vlo = tp - (const uint16_t *) lp;
 324                         *vhi = *vlo + 1;
 325                         return;
 326                 }
 327         }
 328 }
 329
 330 /*
 331  * Fill the Vpdlist for indices Pmax-Pmin
 332  */
 333 static HAL_BOOL
 334 ar5413FillVpdTable(uint32_t pdGainIdx, int16_t Pmin, int16_t  Pmax,
 335                    const int16_t *pwrList, const uint16_t *VpdList,
 336                    uint16_t numIntercepts,
 337                    uint16_t retVpdList[][64])
 338 {
 339         uint16_t ii, jj, kk;
 340         int16_t currPwr = (int16_t)(2*Pmin);
 341         /* since Pmin is pwr*2 and pwrList is 4*pwr */
 342         uint32_t  idxL, idxR;
 343
 344         ii = 0;
 345         jj = 0;
 346
 347         if (numIntercepts < 2)
 348                 return AH_FALSE;
 349
 350         while (ii <= (uint16_t)(Pmax - Pmin)) {
 351                 GetLowerUpperIndex(currPwr, (const uint16_t *) pwrList,
 352                                    numIntercepts, &(idxL), &(idxR));
 353                 if (idxR < 1)
 354                         idxR = 1;                       /* extrapolate below */
 355                 if (idxL == (uint32_t)(numIntercepts - 1))
 356                         idxL = numIntercepts - 2;       /* extrapolate above */
 357                 if (pwrList[idxL] == pwrList[idxR])
 358                         kk = VpdList[idxL];
 359                 else
 360                         kk = (uint16_t)
 361                                 (((currPwr - pwrList[idxL])*VpdList[idxR]+
 362                                   (pwrList[idxR] - currPwr)*VpdList[idxL])/
 363                                  (pwrList[idxR] - pwrList[idxL]));
 364                 retVpdList[pdGainIdx][ii] = kk;
 365                 ii++;
 366                 currPwr += 2;                           /* half dB steps */
 367         }
 368
 369         return AH_TRUE;
 370 }
 371
 372 /*
 373  * Returns interpolated or the scaled up interpolated value
 374  */
 375 static int16_t
 376 interpolate_signed(uint16_t target, uint16_t srcLeft, uint16_t srcRight,
 377         int16_t targetLeft, int16_t targetRight)
 378 {
 379         int16_t rv;
 380
 381         if (srcRight != srcLeft) {
 382                 rv = ((target - srcLeft)*targetRight +
 383                       (srcRight - target)*targetLeft) / (srcRight - srcLeft);
 384         } else {
 385                 rv = targetLeft;
 386         }
 387         return rv;
 388 }
 389
 390 /*
 391  * Uses the data points read from EEPROM to reconstruct the pdadc power table
 392  * Called by ar5413SetPowerTable()
 393  */
 394 static int
 395 ar5413getGainBoundariesAndPdadcsForPowers(struct ath_hal *ah, uint16_t channel,
 396                 const RAW_DATA_STRUCT_2413 *pRawDataset,
 397                 uint16_t pdGainOverlap_t2,
 398                 int16_t  *pMinCalPower, uint16_t pPdGainBoundaries[],
 399                 uint16_t pPdGainValues[], uint16_t pPDADCValues[])
 400 {
 401         struct ar5413State *priv = AR5413(ah);
 402 #define VpdTable_L      priv->vpdTable_L
 403 #define VpdTable_R      priv->vpdTable_R
 404 #define VpdTable_I      priv->vpdTable_I
 405         uint32_t ii, jj, kk;
 406         int32_t ss;/* potentially -ve index for taking care of pdGainOverlap */
 407         uint32_t idxL, idxR;
 408         uint32_t numPdGainsUsed = 0;
 409         /*
 410          * If desired to support -ve power levels in future, just
 411          * change pwr_I_0 to signed 5-bits.
 412          */
 413         int16_t Pmin_t2[MAX_NUM_PDGAINS_PER_CHANNEL];
 414         /* to accomodate -ve power levels later on. */
 415         int16_t Pmax_t2[MAX_NUM_PDGAINS_PER_CHANNEL];
 416         /* to accomodate -ve power levels later on */
 417         uint16_t numVpd = 0;
 418         uint16_t Vpd_step;
 419         int16_t tmpVal ;
 420         uint32_t sizeCurrVpdTable, maxIndex, tgtIndex;
 421
 422         /* Get upper lower index */
 423         GetLowerUpperIndex(channel, pRawDataset->pChannels,
 424                                  pRawDataset->numChannels, &(idxL), &(idxR));
 425
 426         for (ii = 0; ii < MAX_NUM_PDGAINS_PER_CHANNEL; ii++) {
 427                 jj = MAX_NUM_PDGAINS_PER_CHANNEL - ii - 1;
 428                 /* work backwards 'cause highest pdGain for lowest power */
 429                 numVpd = pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].numVpd;
 430                 if (numVpd > 0) {
 431                         pPdGainValues[numPdGainsUsed] = pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].pd_gain;
 432                         Pmin_t2[numPdGainsUsed] = pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].pwr_t4[0];
 433                         if (Pmin_t2[numPdGainsUsed] >pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[0]) {
 434                                 Pmin_t2[numPdGainsUsed] = pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[0];
 435                         }
 436                         Pmin_t2[numPdGainsUsed] = (int16_t)
 437                                 (Pmin_t2[numPdGainsUsed] / 2);
 438                         Pmax_t2[numPdGainsUsed] = pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].pwr_t4[numVpd-1];
 439                         if (Pmax_t2[numPdGainsUsed] > pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[numVpd-1])
 440                                 Pmax_t2[numPdGainsUsed] =
 441                                         pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[numVpd-1];
 442                         Pmax_t2[numPdGainsUsed] = (int16_t)(Pmax_t2[numPdGainsUsed] / 2);
 443                         ar5413FillVpdTable(
 444                                            numPdGainsUsed, Pmin_t2[numPdGainsUsed], Pmax_t2[numPdGainsUsed],
 445                                            &(pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].pwr_t4[0]),
 446                                            &(pRawDataset->pDataPerChannel[idxL].pDataPerPDGain[jj].Vpd[0]), numVpd, VpdTable_L
 447                                            );
 448                         ar5413FillVpdTable(
 449                                            numPdGainsUsed, Pmin_t2[numPdGainsUsed], Pmax_t2[numPdGainsUsed],
 450                                            &(pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].pwr_t4[0]),
 451                                            &(pRawDataset->pDataPerChannel[idxR].pDataPerPDGain[jj].Vpd[0]), numVpd, VpdTable_R
 452                                            );
 453                         for (kk = 0; kk < (uint16_t)(Pmax_t2[numPdGainsUsed] - Pmin_t2[numPdGainsUsed]); kk++) {
 454                                 VpdTable_I[numPdGainsUsed][kk] =
 455                                         interpolate_signed(
 456                                                            channel, pRawDataset->pChannels[idxL], pRawDataset->pChannels[idxR],
 457                                                            (int16_t)VpdTable_L[numPdGainsUsed][kk], (int16_t)VpdTable_R[numPdGainsUsed][kk]);
 458                         }
 459                         /* fill VpdTable_I for this pdGain */
 460                         numPdGainsUsed++;
 461                 }
 462                 /* if this pdGain is used */
 463         }
 464
 465         *pMinCalPower = Pmin_t2[0];
 466         kk = 0; /* index for the final table */
 467         for (ii = 0; ii < numPdGainsUsed; ii++) {
 468                 if (ii == (numPdGainsUsed - 1))
 469                         pPdGainBoundaries[ii] = Pmax_t2[ii] +
 470                                 PD_GAIN_BOUNDARY_STRETCH_IN_HALF_DB;
 471                 else
 472                         pPdGainBoundaries[ii] = (uint16_t)
 473                                 ((Pmax_t2[ii] + Pmin_t2[ii+1]) / 2 );
 474                 if (pPdGainBoundaries[ii] > 63) {
 475                         HALDEBUG(ah, HAL_DEBUG_ANY,
 476                             "%s: clamp pPdGainBoundaries[%d] %d\n",
 477                             __func__, ii, pPdGainBoundaries[ii]);/*XXX*/
 478                         pPdGainBoundaries[ii] = 63;
 479                 }
 480
 481                 /* Find starting index for this pdGain */
 482                 if (ii == 0)
 483                         ss = 0; /* for the first pdGain, start from index 0 */
 484                 else
 485                         ss = (pPdGainBoundaries[ii-1] - Pmin_t2[ii]) -
 486                                 pdGainOverlap_t2;
 487                 Vpd_step = (uint16_t)(VpdTable_I[ii][1] - VpdTable_I[ii][0]);
 488                 Vpd_step = (uint16_t)((Vpd_step < 1) ? 1 : Vpd_step);
 489                 /*
 490                  *-ve ss indicates need to extrapolate data below for this pdGain
 491                  */
 492                 while (ss < 0) {
 493                         tmpVal = (int16_t)(VpdTable_I[ii][0] + ss*Vpd_step);
 494                         pPDADCValues[kk++] = (uint16_t)((tmpVal < 0) ? 0 : tmpVal);
 495                         ss++;
 496                 }
 497
 498                 sizeCurrVpdTable = Pmax_t2[ii] - Pmin_t2[ii];
 499                 tgtIndex = pPdGainBoundaries[ii] + pdGainOverlap_t2 - Pmin_t2[ii];
 500                 maxIndex = (tgtIndex < sizeCurrVpdTable) ? tgtIndex : sizeCurrVpdTable;
 501
 502                 while (ss < (int16_t)maxIndex)
 503                         pPDADCValues[kk++] = VpdTable_I[ii][ss++];
 504
 505                 Vpd_step = (uint16_t)(VpdTable_I[ii][sizeCurrVpdTable-1] -
 506                                        VpdTable_I[ii][sizeCurrVpdTable-2]);
 507                 Vpd_step = (uint16_t)((Vpd_step < 1) ? 1 : Vpd_step);
 508                 /*
 509                  * for last gain, pdGainBoundary == Pmax_t2, so will
 510                  * have to extrapolate
 511                  */
 512                 if (tgtIndex > maxIndex) {      /* need to extrapolate above */
 513                         while(ss < (int16_t)tgtIndex) {
 514                                 tmpVal = (uint16_t)
 515                                         (VpdTable_I[ii][sizeCurrVpdTable-1] +
 516                                          (ss-maxIndex)*Vpd_step);
 517                                 pPDADCValues[kk++] = (tmpVal > 127) ?
 518                                         127 : tmpVal;
 519                                 ss++;
 520                         }
 521                 }                               /* extrapolated above */
 522         }                                       /* for all pdGainUsed */
 523
 524         while (ii < MAX_NUM_PDGAINS_PER_CHANNEL) {
 525                 pPdGainBoundaries[ii] = pPdGainBoundaries[ii-1];
 526                 ii++;
 527         }
 528         while (kk < 128) {
 529                 pPDADCValues[kk] = pPDADCValues[kk-1];
 530                 kk++;
 531         }
 532
 533         return numPdGainsUsed;
 534 #undef VpdTable_L
 535 #undef VpdTable_R
 536 #undef VpdTable_I
 537 }
 538
 539 static HAL_BOOL
 540 ar5413SetPowerTable(struct ath_hal *ah,
 541         int16_t *minPower, int16_t *maxPower,
 542         const struct ieee80211_channel *chan,
 543         uint16_t *rfXpdGain)
 544 {
 545         struct ath_hal_5212 *ahp = AH5212(ah);
 546         uint16_t freq = ath_hal_gethwchannel(ah, chan);
 547         const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom;
 548         const RAW_DATA_STRUCT_2413 *pRawDataset = AH_NULL;
 549         uint16_t pdGainOverlap_t2;
 550         int16_t minCalPower5413_t2;
 551         uint16_t *pdadcValues = ahp->ah_pcdacTable;
 552         uint16_t gainBoundaries[4];
 553         uint32_t reg32, regoffset;
 554         int i, numPdGainsUsed;
 555 #ifndef AH_USE_INIPDGAIN
 556         uint32_t tpcrg1;
 557 #endif
 558
 559         HALDEBUG(ah, HAL_DEBUG_RFPARAM, "%s: chan 0x%x flag 0x%x\n",
 560             __func__, chan->ic_freq, chan->ic_flags);
 561
 562         if (IEEE80211_IS_CHAN_G(chan) || IEEE80211_IS_CHAN_108G(chan))
 563                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11G];
 564         else if (IEEE80211_IS_CHAN_B(chan))
 565                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11B];
 566         else {
 567                 HALASSERT(IEEE80211_IS_CHAN_5GHZ(chan));
 568                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11A];
 569         }
 570
 571         pdGainOverlap_t2 = (uint16_t) SM(OS_REG_READ(ah, AR_PHY_TPCRG5),
 572                                           AR_PHY_TPCRG5_PD_GAIN_OVERLAP);
 573
 574         numPdGainsUsed = ar5413getGainBoundariesAndPdadcsForPowers(ah,
 575                 freq, pRawDataset, pdGainOverlap_t2,
 576                 &minCalPower5413_t2,gainBoundaries, rfXpdGain, pdadcValues);
 577         HALASSERT(1 <= numPdGainsUsed && numPdGainsUsed <= 3);
 578
 579 #ifdef AH_USE_INIPDGAIN
 580         /*
 581          * Use pd_gains curve from eeprom; Atheros always uses
 582          * the default curve from the ini file but some vendors
 583          * (e.g. Zcomax) want to override this curve and not
 584          * honoring their settings results in tx power 5dBm low.
 585          */
 586         OS_REG_RMW_FIELD(ah, AR_PHY_TPCRG1, AR_PHY_TPCRG1_NUM_PD_GAIN,
 587                          (pRawDataset->pDataPerChannel[0].numPdGains - 1));
 588 #else
 589         tpcrg1 = OS_REG_READ(ah, AR_PHY_TPCRG1);
 590         tpcrg1 = (tpcrg1 &~ AR_PHY_TPCRG1_NUM_PD_GAIN)
 591                   | SM(numPdGainsUsed-1, AR_PHY_TPCRG1_NUM_PD_GAIN);
 592         switch (numPdGainsUsed) {
 593         case 3:
 594                 tpcrg1 &= ~AR_PHY_TPCRG1_PDGAIN_SETTING3;
 595                 tpcrg1 |= SM(rfXpdGain[2], AR_PHY_TPCRG1_PDGAIN_SETTING3);
 596                 /* fall thru... */
 597         case 2:
 598                 tpcrg1 &= ~AR_PHY_TPCRG1_PDGAIN_SETTING2;
 599                 tpcrg1 |= SM(rfXpdGain[1], AR_PHY_TPCRG1_PDGAIN_SETTING2);
 600                 /* fall thru... */
 601         case 1:
 602                 tpcrg1 &= ~AR_PHY_TPCRG1_PDGAIN_SETTING1;
 603                 tpcrg1 |= SM(rfXpdGain[0], AR_PHY_TPCRG1_PDGAIN_SETTING1);
 604                 break;
 605         }
 606 #ifdef AH_DEBUG
 607         if (tpcrg1 != OS_REG_READ(ah, AR_PHY_TPCRG1))
 608                 HALDEBUG(ah, HAL_DEBUG_RFPARAM, "%s: using non-default "
 609                     "pd_gains (default 0x%x, calculated 0x%x)\n",
 610                     __func__, OS_REG_READ(ah, AR_PHY_TPCRG1), tpcrg1);
 611 #endif
 612         OS_REG_WRITE(ah, AR_PHY_TPCRG1, tpcrg1);
 613 #endif
 614
 615         /*
 616          * Note the pdadc table may not start at 0 dBm power, could be
 617          * negative or greater than 0.  Need to offset the power
 618          * values by the amount of minPower for griffin
 619          */
 620         if (minCalPower5413_t2 != 0)
 621                 ahp->ah_txPowerIndexOffset = (int16_t)(0 - minCalPower5413_t2);
 622         else
 623                 ahp->ah_txPowerIndexOffset = 0;
 624
 625         /* Finally, write the power values into the baseband power table */
 626         regoffset = 0x9800 + (672 <<2); /* beginning of pdadc table in griffin */
 627         for (i = 0; i < 32; i++) {
 628                 reg32 = ((pdadcValues[4*i + 0] & 0xFF) << 0)  |
 629                         ((pdadcValues[4*i + 1] & 0xFF) << 8)  |
 630                         ((pdadcValues[4*i + 2] & 0xFF) << 16) |
 631                         ((pdadcValues[4*i + 3] & 0xFF) << 24) ;
 632                 OS_REG_WRITE(ah, regoffset, reg32);
 633                 regoffset += 4;
 634         }
 635
 636         OS_REG_WRITE(ah, AR_PHY_TPCRG5,
 637                      SM(pdGainOverlap_t2, AR_PHY_TPCRG5_PD_GAIN_OVERLAP) |
 638                      SM(gainBoundaries[0], AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_1) |
 639                      SM(gainBoundaries[1], AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_2) |
 640                      SM(gainBoundaries[2], AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_3) |
 641                      SM(gainBoundaries[3], AR_PHY_TPCRG5_PD_GAIN_BOUNDARY_4));
 642
 643         return AH_TRUE;
 644 }
 645
 646 static int16_t
 647 ar5413GetMinPower(struct ath_hal *ah, const RAW_DATA_PER_CHANNEL_2413 *data)
 648 {
 649         uint32_t ii,jj;
 650         uint16_t Pmin=0,numVpd;
 651
 652         for (ii = 0; ii < MAX_NUM_PDGAINS_PER_CHANNEL; ii++) {
 653                 jj = MAX_NUM_PDGAINS_PER_CHANNEL - ii - 1;
 654                 /* work backwards 'cause highest pdGain for lowest power */
 655                 numVpd = data->pDataPerPDGain[jj].numVpd;
 656                 if (numVpd > 0) {
 657                         Pmin = data->pDataPerPDGain[jj].pwr_t4[0];
 658                         return(Pmin);
 659                 }
 660         }
 661         return(Pmin);
 662 }
 663
 664 static int16_t
 665 ar5413GetMaxPower(struct ath_hal *ah, const RAW_DATA_PER_CHANNEL_2413 *data)
 666 {
 667         uint32_t ii;
 668         uint16_t Pmax=0,numVpd;
 669
 670         for (ii=0; ii< MAX_NUM_PDGAINS_PER_CHANNEL; ii++) {
 671                 /* work forwards cuase lowest pdGain for highest power */
 672                 numVpd = data->pDataPerPDGain[ii].numVpd;
 673                 if (numVpd > 0) {
 674                         Pmax = data->pDataPerPDGain[ii].pwr_t4[numVpd-1];
 675                         return(Pmax);
 676                 }
 677         }
 678         return(Pmax);
 679 }
 680
 681 static HAL_BOOL
 682 ar5413GetChannelMaxMinPower(struct ath_hal *ah,
 683         const struct ieee80211_channel *chan,
 684         int16_t *maxPow, int16_t *minPow)
 685 {
 686         uint16_t freq = chan->ic_freq;          /* NB: never mapped */
 687         const HAL_EEPROM *ee = AH_PRIVATE(ah)->ah_eeprom;
 688         const RAW_DATA_STRUCT_2413 *pRawDataset = AH_NULL;
 689         const RAW_DATA_PER_CHANNEL_2413 *data=AH_NULL;
 690         uint16_t numChannels;
 691         int totalD,totalF, totalMin,last, i;
 692
 693         *maxPow = 0;
 694
 695         if (IEEE80211_IS_CHAN_G(chan) || IEEE80211_IS_CHAN_108G(chan))
 696                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11G];
 697         else if (IEEE80211_IS_CHAN_B(chan))
 698                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11B];
 699         else {
 700                 HALASSERT(IEEE80211_IS_CHAN_5GHZ(chan));
 701                 pRawDataset = &ee->ee_rawDataset2413[headerInfo11A];
 702         }
 703
 704         numChannels = pRawDataset->numChannels;
 705         data = pRawDataset->pDataPerChannel;
 706
 707         /* Make sure the channel is in the range of the TP values
 708          *  (freq piers)
 709          */
 710         if (numChannels < 1)
 711                 return(AH_FALSE);
 712
 713         if ((freq < data[0].channelValue) ||
 714             (freq > data[numChannels-1].channelValue)) {
 715                 if (freq < data[0].channelValue) {
 716                         *maxPow = ar5413GetMaxPower(ah, &data[0]);
 717                         *minPow = ar5413GetMinPower(ah, &data[0]);
 718                         return(AH_TRUE);
 719                 } else {
 720                         *maxPow = ar5413GetMaxPower(ah, &data[numChannels - 1]);
 721                         *minPow = ar5413GetMinPower(ah, &data[numChannels - 1]);
 722                         return(AH_TRUE);
 723                 }
 724         }
 725
 726         /* Linearly interpolate the power value now */
 727         for (last=0,i=0; (i<numChannels) && (freq > data[i].channelValue);
 728              last = i++);
 729         totalD = data[i].channelValue - data[last].channelValue;
 730         if (totalD > 0) {
 731                 totalF = ar5413GetMaxPower(ah, &data[i]) - ar5413GetMaxPower(ah, &data[last]);
 732                 *maxPow = (int8_t) ((totalF*(freq-data[last].channelValue) +
 733                                      ar5413GetMaxPower(ah, &data[last])*totalD)/totalD);
 734                 totalMin = ar5413GetMinPower(ah, &data[i]) - ar5413GetMinPower(ah, &data[last]);
 735                 *minPow = (int8_t) ((totalMin*(freq-data[last].channelValue) +
 736                                      ar5413GetMinPower(ah, &data[last])*totalD)/totalD);
 737                 return(AH_TRUE);
 738         } else {
 739                 if (freq == data[i].channelValue) {
 740                         *maxPow = ar5413GetMaxPower(ah, &data[i]);
 741                         *minPow = ar5413GetMinPower(ah, &data[i]);
 742                         return(AH_TRUE);
 743                 } else
 744                         return(AH_FALSE);
 745         }
 746 }
 747
 748 /*
 749  * Free memory for analog bank scratch buffers
 750  */
 751 static void
 752 ar5413RfDetach(struct ath_hal *ah)
 753 {
 754         struct ath_hal_5212 *ahp = AH5212(ah);
 755
 756         HALASSERT(ahp->ah_rfHal != AH_NULL);
 757         ath_hal_free(ahp->ah_rfHal);
 758         ahp->ah_rfHal = AH_NULL;
 759 }
 760
 761 /*
 762  * Allocate memory for analog bank scratch buffers
 763  * Scratch Buffer will be reinitialized every reset so no need to zero now
 764  */
 765 static HAL_BOOL
 766 ar5413RfAttach(struct ath_hal *ah, HAL_STATUS *status)
 767 {
 768         struct ath_hal_5212 *ahp = AH5212(ah);
 769         struct ar5413State *priv;
 770
 771         HALASSERT(ah->ah_magic == AR5212_MAGIC);
 772
 773         HALASSERT(ahp->ah_rfHal == AH_NULL);
 774         priv = ath_hal_malloc(sizeof(struct ar5413State));
 775         if (priv == AH_NULL) {
 776                 HALDEBUG(ah, HAL_DEBUG_ANY,
 777                     "%s: cannot allocate private state\n", __func__);
 778                 *status = HAL_ENOMEM;           /* XXX */
 779                 return AH_FALSE;
 780         }
 781         priv->base.rfDetach             = ar5413RfDetach;
 782         priv->base.writeRegs            = ar5413WriteRegs;
 783         priv->base.getRfBank            = ar5413GetRfBank;
 784         priv->base.setChannel           = ar5413SetChannel;
 785         priv->base.setRfRegs            = ar5413SetRfRegs;
 786         priv->base.setPowerTable        = ar5413SetPowerTable;
 787         priv->base.getChannelMaxMinPower = ar5413GetChannelMaxMinPower;
 788         priv->base.getNfAdjust          = ar5212GetNfAdjust;
 789
 790         ahp->ah_pcdacTable = priv->pcdacTable;
 791         ahp->ah_pcdacTableSize = sizeof(priv->pcdacTable);
 792         ahp->ah_rfHal = &priv->base;
 793
 794         return AH_TRUE;
 795 }
 796
 797 static HAL_BOOL
 798 ar5413Probe(struct ath_hal *ah)
 799 {
 800         return IS_5413(ah);
 801 }
 802 AH_RF(RF5413, ar5413Probe, ar5413RfAttach);