2 * SPDX-License-Identifier: ISC
4 * Copyright (c) 2008-2009 Sam Leffler, Errno Consulting
5 * Copyright (c) 2008 Atheros Communications, Inc.
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 * NB: Merlin and later have a simpler RF backend.
27 #include "ah_internal.h"
29 #include "ah_eeprom_v14.h"
31 #include "ar9002/ar9287.h"
32 #include "ar5416/ar5416reg.h"
33 #include "ar5416/ar5416phy.h"
35 #define N(a) (sizeof(a)/sizeof(a[0]))
38 RF_HAL_FUNCS base; /* public state, must be first */
39 uint16_t pcdacTable[1]; /* XXX */
41 #define AR9287(ah) ((struct ar9287State *) AH5212(ah)->ah_rfHal)
43 static HAL_BOOL ar9287GetChannelMaxMinPower(struct ath_hal *,
44 const struct ieee80211_channel *, int16_t *maxPow,int16_t *minPow);
45 int16_t ar9287GetNfAdjust(struct ath_hal *ah, const HAL_CHANNEL_INTERNAL *c);
48 ar9287WriteRegs(struct ath_hal *ah, u_int modesIndex, u_int freqIndex,
51 (void) ath_hal_ini_write(ah, &AH5416(ah)->ah_ini_bb_rfgain,
56 * Take the MHz channel value and set the Channel value
58 * ASSUMES: Writes enabled to analog bus
63 * Channel Frequency = (3/4) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17)
67 * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^10)
68 * (freq_ref = 40MHz/(24>>amodeRefSel))
70 * For 5GHz channels which are 5MHz spaced,
71 * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17)
75 ar9287SetChannel(struct ath_hal *ah, const struct ieee80211_channel *chan)
77 uint16_t bMode, fracMode, aModeRefSel = 0;
78 uint32_t freq, ndiv, channelSel = 0, channelFrac = 0, reg32 = 0;
80 uint32_t refDivA = 24;
82 OS_MARK(ah, AH_MARK_SETCHANNEL, chan->ic_freq);
84 ar5416GetChannelCenters(ah, chan, ¢ers);
85 freq = centers.synth_center;
87 reg32 = OS_REG_READ(ah, AR_PHY_SYNTH_CONTROL);
90 if (freq < 4800) { /* 2 GHz, fractional mode */
97 channelSel = (freq * 0x10000)/15;
99 if (AR_SREV_KIWI_11_OR_LATER(ah)) {
101 ath_hal_ini_write(ah,
102 &AH9287(ah)->ah_ini_cckFirJapan2484, 1,
105 ath_hal_ini_write(ah,
106 &AH9287(ah)->ah_ini_cckFirNormal, 1,
111 txctl = OS_REG_READ(ah, AR_PHY_CCK_TX_CTRL);
113 /* Enable channel spreading for channel 14 */
114 OS_REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
115 txctl | AR_PHY_CCK_TX_CTRL_JAPAN);
117 OS_REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
118 txctl &~ AR_PHY_CCK_TX_CTRL_JAPAN);
124 if ((freq % 20) == 0) {
126 } else if ((freq % 10) == 0) {
131 * Enable 2G (fractional) mode for channels which
136 channelSel = (freq * 0x8000)/15;
138 /* RefDivA setting */
139 OS_A_REG_RMW_FIELD(ah, AR_AN_SYNTH9,
140 AR_AN_SYNTH9_REFDIVA, refDivA);
143 ndiv = (freq * (refDivA >> aModeRefSel))/60;
144 channelSel = ndiv & 0x1ff;
145 channelFrac = (ndiv & 0xfffffe00) * 2;
146 channelSel = (channelSel << 17) | channelFrac;
150 reg32 = reg32 | (bMode << 29) | (fracMode << 28) |
151 (aModeRefSel << 26) | (channelSel);
153 OS_REG_WRITE(ah, AR_PHY_SYNTH_CONTROL, reg32);
155 AH_PRIVATE(ah)->ah_curchan = chan;
161 * Return a reference to the requested RF Bank.
164 ar9287GetRfBank(struct ath_hal *ah, int bank)
166 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unknown RF Bank %d requested\n",
172 * Reads EEPROM header info from device structure and programs
176 ar9287SetRfRegs(struct ath_hal *ah, const struct ieee80211_channel *chan,
177 uint16_t modesIndex, uint16_t *rfXpdGain)
179 return AH_TRUE; /* nothing to do */
183 * Read the transmit power levels from the structures taken from EEPROM
184 * Interpolate read transmit power values for this channel
185 * Organize the transmit power values into a table for writing into the hardware
189 ar9287SetPowerTable(struct ath_hal *ah, int16_t *pPowerMin, int16_t *pPowerMax,
190 const struct ieee80211_channel *chan, uint16_t *rfXpdGain)
197 ar9287GetMinPower(struct ath_hal *ah, EXPN_DATA_PER_CHANNEL_5112 *data)
200 int16_t minGain,minPwr,minPcdac,retVal;
202 /* Assume NUM_POINTS_XPD0 > 0 */
203 minGain = data->pDataPerXPD[0].xpd_gain;
204 for (minIndex=0,i=1; i<NUM_XPD_PER_CHANNEL; i++) {
205 if (data->pDataPerXPD[i].xpd_gain < minGain) {
207 minGain = data->pDataPerXPD[i].xpd_gain;
210 minPwr = data->pDataPerXPD[minIndex].pwr_t4[0];
211 minPcdac = data->pDataPerXPD[minIndex].pcdac[0];
212 for (i=1; i<NUM_POINTS_XPD0; i++) {
213 if (data->pDataPerXPD[minIndex].pwr_t4[i] < minPwr) {
214 minPwr = data->pDataPerXPD[minIndex].pwr_t4[i];
215 minPcdac = data->pDataPerXPD[minIndex].pcdac[i];
218 retVal = minPwr - (minPcdac*2);
224 ar9287GetChannelMaxMinPower(struct ath_hal *ah,
225 const struct ieee80211_channel *chan,
226 int16_t *maxPow, int16_t *minPow)
229 struct ath_hal_5212 *ahp = AH5212(ah);
230 int numChannels=0,i,last;
231 int totalD, totalF,totalMin;
232 EXPN_DATA_PER_CHANNEL_5112 *data=AH_NULL;
233 EEPROM_POWER_EXPN_5112 *powerArray=AH_NULL;
236 if (IS_CHAN_A(chan)) {
237 powerArray = ahp->ah_modePowerArray5112;
238 data = powerArray[headerInfo11A].pDataPerChannel;
239 numChannels = powerArray[headerInfo11A].numChannels;
240 } else if (IS_CHAN_G(chan) || IS_CHAN_108G(chan)) {
241 /* XXX - is this correct? Should we also use the same power for turbo G? */
242 powerArray = ahp->ah_modePowerArray5112;
243 data = powerArray[headerInfo11G].pDataPerChannel;
244 numChannels = powerArray[headerInfo11G].numChannels;
245 } else if (IS_CHAN_B(chan)) {
246 powerArray = ahp->ah_modePowerArray5112;
247 data = powerArray[headerInfo11B].pDataPerChannel;
248 numChannels = powerArray[headerInfo11B].numChannels;
252 /* Make sure the channel is in the range of the TP values
255 if ((numChannels < 1) ||
256 (chan->channel < data[0].channelValue) ||
257 (chan->channel > data[numChannels-1].channelValue))
260 /* Linearly interpolate the power value now */
262 (i<numChannels) && (chan->channel > data[i].channelValue);
264 totalD = data[i].channelValue - data[last].channelValue;
266 totalF = data[i].maxPower_t4 - data[last].maxPower_t4;
267 *maxPow = (int8_t) ((totalF*(chan->channel-data[last].channelValue) + data[last].maxPower_t4*totalD)/totalD);
269 totalMin = ar9287GetMinPower(ah,&data[i]) - ar9287GetMinPower(ah, &data[last]);
270 *minPow = (int8_t) ((totalMin*(chan->channel-data[last].channelValue) + ar9287GetMinPower(ah, &data[last])*totalD)/totalD);
273 if (chan->channel == data[i].channelValue) {
274 *maxPow = data[i].maxPower_t4;
275 *minPow = ar9287GetMinPower(ah, &data[i]);
281 *maxPow = *minPow = 0;
287 * The ordering of nfarray is thus:
289 * nfarray[0]: Chain 0 ctl
290 * nfarray[1]: Chain 1 ctl
291 * nfarray[2]: Chain 2 ctl
292 * nfarray[3]: Chain 0 ext
293 * nfarray[4]: Chain 1 ext
294 * nfarray[5]: Chain 2 ext
297 ar9287GetNoiseFloor(struct ath_hal *ah, int16_t nfarray[])
301 nf = MS(OS_REG_READ(ah, AR_PHY_CCA), AR9280_PHY_MINCCA_PWR);
303 nf = 0 - ((nf ^ 0x1ff) + 1);
304 HALDEBUG(ah, HAL_DEBUG_NFCAL,
305 "NF calibrated [ctl] [chain 0] is %d\n", nf);
308 nf = MS(OS_REG_READ(ah, AR_PHY_CH1_CCA), AR9280_PHY_CH1_MINCCA_PWR);
310 nf = 0 - ((nf ^ 0x1ff) + 1);
311 HALDEBUG(ah, HAL_DEBUG_NFCAL,
312 "NF calibrated [ctl] [chain 1] is %d\n", nf);
315 nf = MS(OS_REG_READ(ah, AR_PHY_EXT_CCA), AR9280_PHY_EXT_MINCCA_PWR);
317 nf = 0 - ((nf ^ 0x1ff) + 1);
318 HALDEBUG(ah, HAL_DEBUG_NFCAL,
319 "NF calibrated [ext] [chain 0] is %d\n", nf);
322 nf = MS(OS_REG_READ(ah, AR_PHY_CH1_EXT_CCA), AR9280_PHY_CH1_EXT_MINCCA_PWR);
324 nf = 0 - ((nf ^ 0x1ff) + 1);
325 HALDEBUG(ah, HAL_DEBUG_NFCAL,
326 "NF calibrated [ext] [chain 1] is %d\n", nf);
329 /* Chain 2 - invalid */
336 * Adjust NF based on statistical values for 5GHz frequencies.
337 * Stubbed:Not used by Fowl
340 ar9287GetNfAdjust(struct ath_hal *ah, const HAL_CHANNEL_INTERNAL *c)
346 * Free memory for analog bank scratch buffers
349 ar9287RfDetach(struct ath_hal *ah)
351 struct ath_hal_5212 *ahp = AH5212(ah);
353 HALASSERT(ahp->ah_rfHal != AH_NULL);
354 ath_hal_free(ahp->ah_rfHal);
355 ahp->ah_rfHal = AH_NULL;
359 ar9287RfAttach(struct ath_hal *ah, HAL_STATUS *status)
361 struct ath_hal_5212 *ahp = AH5212(ah);
362 struct ar9287State *priv;
364 HALDEBUG(ah, HAL_DEBUG_ATTACH, "%s: attach AR9280 radio\n", __func__);
366 HALASSERT(ahp->ah_rfHal == AH_NULL);
367 priv = ath_hal_malloc(sizeof(struct ar9287State));
368 if (priv == AH_NULL) {
369 HALDEBUG(ah, HAL_DEBUG_ANY,
370 "%s: cannot allocate private state\n", __func__);
371 *status = HAL_ENOMEM; /* XXX */
374 priv->base.rfDetach = ar9287RfDetach;
375 priv->base.writeRegs = ar9287WriteRegs;
376 priv->base.getRfBank = ar9287GetRfBank;
377 priv->base.setChannel = ar9287SetChannel;
378 priv->base.setRfRegs = ar9287SetRfRegs;
379 priv->base.setPowerTable = ar9287SetPowerTable;
380 priv->base.getChannelMaxMinPower = ar9287GetChannelMaxMinPower;
381 priv->base.getNfAdjust = ar9287GetNfAdjust;
383 ahp->ah_pcdacTable = priv->pcdacTable;
384 ahp->ah_pcdacTableSize = sizeof(priv->pcdacTable);
385 ahp->ah_rfHal = &priv->base;
387 * Set noise floor adjust method; we arrange a
388 * direct call instead of thunking.
390 AH_PRIVATE(ah)->ah_getNfAdjust = priv->base.getNfAdjust;
391 AH_PRIVATE(ah)->ah_getNoiseFloor = ar9287GetNoiseFloor;
397 ar9287RfProbe(struct ath_hal *ah)
399 return (AR_SREV_KIWI(ah));
402 AH_RF(RF9287, ar9287RfProbe, ar9287RfAttach);