| 1 | /* |
| 2 | * Copyright (c) 2008-2009 Sam Leffler, Errno Consulting |
| 3 | * Copyright (c) 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 | /* |
| 22 | * NB: Merlin and later have a simpler RF backend. |
| 23 | */ |
| 24 | #include "ah.h" |
| 25 | #include "ah_internal.h" |
| 26 | |
| 27 | #include "ah_eeprom_v14.h" |
| 28 | |
| 29 | #include "ar5416/ar9280.h" |
| 30 | #include "ar5416/ar5416reg.h" |
| 31 | #include "ar5416/ar5416phy.h" |
| 32 | |
| 33 | #define N(a) (sizeof(a)/sizeof(a[0])) |
| 34 | |
| 35 | struct ar9280State { |
| 36 | RF_HAL_FUNCS base; /* public state, must be first */ |
| 37 | uint16_t pcdacTable[1]; /* XXX */ |
| 38 | }; |
| 39 | #define AR9280(ah) ((struct ar9280State *) AH5212(ah)->ah_rfHal) |
| 40 | |
| 41 | static HAL_BOOL ar9280GetChannelMaxMinPower(struct ath_hal *, |
| 42 | HAL_CHANNEL *, int16_t *maxPow,int16_t *minPow); |
| 43 | int16_t ar9280GetNfAdjust(struct ath_hal *ah, const HAL_CHANNEL_INTERNAL *c); |
| 44 | |
| 45 | static void |
| 46 | ar9280WriteRegs(struct ath_hal *ah, u_int modesIndex, u_int freqIndex, |
| 47 | int writes) |
| 48 | { |
| 49 | (void) ath_hal_ini_write(ah, &AH5416(ah)->ah_ini_bb_rfgain, |
| 50 | freqIndex, writes); |
| 51 | } |
| 52 | |
| 53 | /* |
| 54 | * Take the MHz channel value and set the Channel value |
| 55 | * |
| 56 | * ASSUMES: Writes enabled to analog bus |
| 57 | * |
| 58 | * Actual Expression, |
| 59 | * |
| 60 | * For 2GHz channel, |
| 61 | * Channel Frequency = (3/4) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17) |
| 62 | * (freq_ref = 40MHz) |
| 63 | * |
| 64 | * For 5GHz channel, |
| 65 | * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^10) |
| 66 | * (freq_ref = 40MHz/(24>>amodeRefSel)) |
| 67 | * |
| 68 | * For 5GHz channels which are 5MHz spaced, |
| 69 | * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17) |
| 70 | * (freq_ref = 40MHz) |
| 71 | */ |
| 72 | static HAL_BOOL |
| 73 | ar9280SetChannel(struct ath_hal *ah, HAL_CHANNEL_INTERNAL *chan) |
| 74 | { |
| 75 | uint16_t bMode, fracMode, aModeRefSel = 0; |
| 76 | uint32_t freq, ndiv, channelSel = 0, channelFrac = 0, reg32 = 0; |
| 77 | CHAN_CENTERS centers; |
| 78 | uint32_t refDivA = 24; |
| 79 | |
| 80 | OS_MARK(ah, AH_MARK_SETCHANNEL, chan->ic_freq); |
| 81 | |
| 82 | ar5416GetChannelCenters(ah, chan, ¢ers); |
| 83 | freq = centers.synth_center; |
| 84 | |
| 85 | reg32 = OS_REG_READ(ah, AR_PHY_SYNTH_CONTROL); |
| 86 | reg32 &= 0xc0000000; |
| 87 | |
| 88 | if (freq < 4800) { /* 2 GHz, fractional mode */ |
| 89 | uint32_t txctl; |
| 90 | |
| 91 | bMode = 1; |
| 92 | fracMode = 1; |
| 93 | aModeRefSel = 0; |
| 94 | channelSel = (freq * 0x10000)/15; |
| 95 | |
| 96 | txctl = OS_REG_READ(ah, AR_PHY_CCK_TX_CTRL); |
| 97 | if (freq == 2484) { |
| 98 | /* Enable channel spreading for channel 14 */ |
| 99 | OS_REG_WRITE(ah, AR_PHY_CCK_TX_CTRL, |
| 100 | txctl | AR_PHY_CCK_TX_CTRL_JAPAN); |
| 101 | } else { |
| 102 | OS_REG_WRITE(ah, AR_PHY_CCK_TX_CTRL, |
| 103 | txctl &~ AR_PHY_CCK_TX_CTRL_JAPAN); |
| 104 | } |
| 105 | } else { |
| 106 | bMode = 0; |
| 107 | fracMode = 0; |
| 108 | |
| 109 | if ((freq % 20) == 0) { |
| 110 | aModeRefSel = 3; |
| 111 | } else if ((freq % 10) == 0) { |
| 112 | aModeRefSel = 2; |
| 113 | } else { |
| 114 | aModeRefSel = 0; |
| 115 | /* Enable 2G (fractional) mode for channels which are 5MHz spaced */ |
| 116 | fracMode = 1; |
| 117 | refDivA = 1; |
| 118 | channelSel = (freq * 0x8000)/15; |
| 119 | |
| 120 | /* RefDivA setting */ |
| 121 | OS_REG_RMW_FIELD(ah, AR_AN_SYNTH9, |
| 122 | AR_AN_SYNTH9_REFDIVA, refDivA); |
| 123 | } |
| 124 | if (!fracMode) { |
| 125 | ndiv = (freq * (refDivA >> aModeRefSel))/60; |
| 126 | channelSel = ndiv & 0x1ff; |
| 127 | channelFrac = (ndiv & 0xfffffe00) * 2; |
| 128 | channelSel = (channelSel << 17) | channelFrac; |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | reg32 = reg32 | (bMode << 29) | (fracMode << 28) | |
| 133 | (aModeRefSel << 26) | (channelSel); |
| 134 | |
| 135 | OS_REG_WRITE(ah, AR_PHY_SYNTH_CONTROL, reg32); |
| 136 | |
| 137 | AH_PRIVATE(ah)->ah_curchan = chan; |
| 138 | |
| 139 | return AH_TRUE; |
| 140 | } |
| 141 | |
| 142 | /* |
| 143 | * Return a reference to the requested RF Bank. |
| 144 | */ |
| 145 | static uint32_t * |
| 146 | ar9280GetRfBank(struct ath_hal *ah, int bank) |
| 147 | { |
| 148 | HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unknown RF Bank %d requested\n" , |
| 149 | __func__, bank); |
| 150 | return AH_NULL; |
| 151 | } |
| 152 | |
| 153 | /* |
| 154 | * Reads EEPROM header info from device structure and programs |
| 155 | * all rf registers |
| 156 | */ |
| 157 | static HAL_BOOL |
| 158 | ar9280SetRfRegs(struct ath_hal *ah, HAL_CHANNEL_INTERNAL *chan, |
| 159 | uint16_t modesIndex, uint16_t *rfXpdGain) |
| 160 | { |
| 161 | return AH_TRUE; /* nothing to do */ |
| 162 | } |
| 163 | |
| 164 | /* |
| 165 | * Read the transmit power levels from the structures taken from EEPROM |
| 166 | * Interpolate read transmit power values for this channel |
| 167 | * Organize the transmit power values into a table for writing into the hardware |
| 168 | */ |
| 169 | |
| 170 | static HAL_BOOL |
| 171 | ar9280SetPowerTable(struct ath_hal *ah, int16_t *pPowerMin, int16_t *pPowerMax, |
| 172 | HAL_CHANNEL_INTERNAL *chan, uint16_t *rfXpdGain) |
| 173 | { |
| 174 | return AH_TRUE; |
| 175 | } |
| 176 | |
| 177 | #if 0 |
| 178 | static int16_t |
| 179 | ar9280GetMinPower(struct ath_hal *ah, EXPN_DATA_PER_CHANNEL_5112 *data) |
| 180 | { |
| 181 | int i, minIndex; |
| 182 | int16_t minGain,minPwr,minPcdac,retVal; |
| 183 | |
| 184 | /* Assume NUM_POINTS_XPD0 > 0 */ |
| 185 | minGain = data->pDataPerXPD[0].xpd_gain; |
| 186 | for (minIndex=0,i=1; i<NUM_XPD_PER_CHANNEL; i++) { |
| 187 | if (data->pDataPerXPD[i].xpd_gain < minGain) { |
| 188 | minIndex = i; |
| 189 | minGain = data->pDataPerXPD[i].xpd_gain; |
| 190 | } |
| 191 | } |
| 192 | minPwr = data->pDataPerXPD[minIndex].pwr_t4[0]; |
| 193 | minPcdac = data->pDataPerXPD[minIndex].pcdac[0]; |
| 194 | for (i=1; i<NUM_POINTS_XPD0; i++) { |
| 195 | if (data->pDataPerXPD[minIndex].pwr_t4[i] < minPwr) { |
| 196 | minPwr = data->pDataPerXPD[minIndex].pwr_t4[i]; |
| 197 | minPcdac = data->pDataPerXPD[minIndex].pcdac[i]; |
| 198 | } |
| 199 | } |
| 200 | retVal = minPwr - (minPcdac*2); |
| 201 | return(retVal); |
| 202 | } |
| 203 | #endif |
| 204 | |
| 205 | static HAL_BOOL |
| 206 | ar9280GetChannelMaxMinPower(struct ath_hal *ah, |
| 207 | HAL_CHANNEL *chan, |
| 208 | int16_t *maxPow, int16_t *minPow) |
| 209 | { |
| 210 | #if 0 |
| 211 | struct ath_hal_5212 *ahp = AH5212(ah); |
| 212 | int numChannels=0,i,last; |
| 213 | int totalD, totalF,totalMin; |
| 214 | EXPN_DATA_PER_CHANNEL_5112 *data=AH_NULL; |
| 215 | EEPROM_POWER_EXPN_5112 *powerArray=AH_NULL; |
| 216 | |
| 217 | *maxPow = 0; |
| 218 | if (IS_CHAN_A(chan)) { |
| 219 | powerArray = ahp->ah_modePowerArray5112; |
| 220 | data = powerArray[headerInfo11A].pDataPerChannel; |
| 221 | numChannels = powerArray[headerInfo11A].numChannels; |
| 222 | } else if (IS_CHAN_G(chan) || IS_CHAN_108G(chan)) { |
| 223 | /* XXX - is this correct? Should we also use the same power for turbo G? */ |
| 224 | powerArray = ahp->ah_modePowerArray5112; |
| 225 | data = powerArray[headerInfo11G].pDataPerChannel; |
| 226 | numChannels = powerArray[headerInfo11G].numChannels; |
| 227 | } else if (IS_CHAN_B(chan)) { |
| 228 | powerArray = ahp->ah_modePowerArray5112; |
| 229 | data = powerArray[headerInfo11B].pDataPerChannel; |
| 230 | numChannels = powerArray[headerInfo11B].numChannels; |
| 231 | } else { |
| 232 | return (AH_TRUE); |
| 233 | } |
| 234 | /* Make sure the channel is in the range of the TP values |
| 235 | * (freq piers) |
| 236 | */ |
| 237 | if ((numChannels < 1) || |
| 238 | (chan->channel < data[0].channelValue) || |
| 239 | (chan->channel > data[numChannels-1].channelValue)) |
| 240 | return(AH_FALSE); |
| 241 | |
| 242 | /* Linearly interpolate the power value now */ |
| 243 | for (last=0,i=0; |
| 244 | (i<numChannels) && (chan->channel > data[i].channelValue); |
| 245 | last=i++); |
| 246 | totalD = data[i].channelValue - data[last].channelValue; |
| 247 | if (totalD > 0) { |
| 248 | totalF = data[i].maxPower_t4 - data[last].maxPower_t4; |
| 249 | *maxPow = (int8_t) ((totalF*(chan->channel-data[last].channelValue) + data[last].maxPower_t4*totalD)/totalD); |
| 250 | |
| 251 | totalMin = ar9280GetMinPower(ah,&data[i]) - ar9280GetMinPower(ah, &data[last]); |
| 252 | *minPow = (int8_t) ((totalMin*(chan->channel-data[last].channelValue) + ar9280GetMinPower(ah, &data[last])*totalD)/totalD); |
| 253 | return (AH_TRUE); |
| 254 | } else { |
| 255 | if (chan->channel == data[i].channelValue) { |
| 256 | *maxPow = data[i].maxPower_t4; |
| 257 | *minPow = ar9280GetMinPower(ah, &data[i]); |
| 258 | return(AH_TRUE); |
| 259 | } else |
| 260 | return(AH_FALSE); |
| 261 | } |
| 262 | #else |
| 263 | *maxPow = *minPow = 0; |
| 264 | return AH_FALSE; |
| 265 | #endif |
| 266 | } |
| 267 | |
| 268 | static void |
| 269 | ar9280GetNoiseFloor(struct ath_hal *ah, int16_t nfarray[]) |
| 270 | { |
| 271 | int16_t nf; |
| 272 | |
| 273 | nf = MS(OS_REG_READ(ah, AR_PHY_CCA), AR9280_PHY_MINCCA_PWR); |
| 274 | if (nf & 0x100) |
| 275 | nf = 0 - ((nf ^ 0x1ff) + 1); |
| 276 | HALDEBUG(ah, HAL_DEBUG_NFCAL, |
| 277 | "NF calibrated [ctl] [chain 0] is %d\n" , nf); |
| 278 | nfarray[0] = nf; |
| 279 | |
| 280 | nf = MS(OS_REG_READ(ah, AR_PHY_CH1_CCA), AR9280_PHY_CH1_MINCCA_PWR); |
| 281 | if (nf & 0x100) |
| 282 | nf = 0 - ((nf ^ 0x1ff) + 1); |
| 283 | HALDEBUG(ah, HAL_DEBUG_NFCAL, |
| 284 | "NF calibrated [ctl] [chain 1] is %d\n" , nf); |
| 285 | nfarray[1] = nf; |
| 286 | |
| 287 | nf = MS(OS_REG_READ(ah, AR_PHY_EXT_CCA), AR9280_PHY_EXT_MINCCA_PWR); |
| 288 | if (nf & 0x100) |
| 289 | nf = 0 - ((nf ^ 0x1ff) + 1); |
| 290 | HALDEBUG(ah, HAL_DEBUG_NFCAL, |
| 291 | "NF calibrated [ext] [chain 0] is %d\n" , nf); |
| 292 | nfarray[3] = nf; |
| 293 | |
| 294 | nf = MS(OS_REG_READ(ah, AR_PHY_CH1_EXT_CCA), AR9280_PHY_CH1_EXT_MINCCA_PWR); |
| 295 | if (nf & 0x100) |
| 296 | nf = 0 - ((nf ^ 0x1ff) + 1); |
| 297 | HALDEBUG(ah, HAL_DEBUG_NFCAL, |
| 298 | "NF calibrated [ext] [chain 1] is %d\n" , nf); |
| 299 | nfarray[4] = nf; |
| 300 | } |
| 301 | |
| 302 | /* |
| 303 | * Adjust NF based on statistical values for 5GHz frequencies. |
| 304 | * Stubbed:Not used by Fowl |
| 305 | */ |
| 306 | int16_t |
| 307 | ar9280GetNfAdjust(struct ath_hal *ah, const HAL_CHANNEL_INTERNAL *c) |
| 308 | { |
| 309 | return 0; |
| 310 | } |
| 311 | |
| 312 | /* |
| 313 | * Free memory for analog bank scratch buffers |
| 314 | */ |
| 315 | static void |
| 316 | ar9280RfDetach(struct ath_hal *ah) |
| 317 | { |
| 318 | struct ath_hal_5212 *ahp = AH5212(ah); |
| 319 | |
| 320 | HALASSERT(ahp->ah_rfHal != AH_NULL); |
| 321 | ath_hal_free(ahp->ah_rfHal); |
| 322 | ahp->ah_rfHal = AH_NULL; |
| 323 | } |
| 324 | |
| 325 | HAL_BOOL |
| 326 | ar9280RfAttach(struct ath_hal *ah, HAL_STATUS *status) |
| 327 | { |
| 328 | struct ath_hal_5212 *ahp = AH5212(ah); |
| 329 | struct ar9280State *priv; |
| 330 | |
| 331 | HALDEBUG(ah, HAL_DEBUG_ATTACH, "%s: attach AR9280 radio\n" , __func__); |
| 332 | |
| 333 | HALASSERT(ahp->ah_rfHal == AH_NULL); |
| 334 | priv = ath_hal_malloc(sizeof(struct ar9280State)); |
| 335 | if (priv == AH_NULL) { |
| 336 | HALDEBUG(ah, HAL_DEBUG_ANY, |
| 337 | "%s: cannot allocate private state\n" , __func__); |
| 338 | *status = HAL_ENOMEM; /* XXX */ |
| 339 | return AH_FALSE; |
| 340 | } |
| 341 | priv->base.rfDetach = ar9280RfDetach; |
| 342 | priv->base.writeRegs = ar9280WriteRegs; |
| 343 | priv->base.getRfBank = ar9280GetRfBank; |
| 344 | priv->base.setChannel = ar9280SetChannel; |
| 345 | priv->base.setRfRegs = ar9280SetRfRegs; |
| 346 | priv->base.setPowerTable = ar9280SetPowerTable; |
| 347 | priv->base.getChannelMaxMinPower = ar9280GetChannelMaxMinPower; |
| 348 | priv->base.getNfAdjust = ar9280GetNfAdjust; |
| 349 | |
| 350 | ahp->ah_pcdacTable = priv->pcdacTable; |
| 351 | ahp->ah_pcdacTableSize = sizeof(priv->pcdacTable); |
| 352 | ahp->ah_rfHal = &priv->base; |
| 353 | /* |
| 354 | * Set noise floor adjust method; we arrange a |
| 355 | * direct call instead of thunking. |
| 356 | */ |
| 357 | AH_PRIVATE(ah)->ah_getNfAdjust = priv->base.getNfAdjust; |
| 358 | AH_PRIVATE(ah)->ah_getNoiseFloor = ar9280GetNoiseFloor; |
| 359 | |
| 360 | return AH_TRUE; |
| 361 | } |
| 362 | |