2 * Copyright (c) 2008-2009 Sam Leffler, Errno Consulting
3 * Copyright (c) 2008 Atheros Communications, Inc.
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.
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.
22 * NB: Merlin and later have a simpler RF backend.
25 #include "ah_internal.h"
27 #include "ah_eeprom_v14.h"
29 #include "ar9002/ar9280.h"
30 #include "ar5416/ar5416reg.h"
31 #include "ar5416/ar5416phy.h"
33 #define N(a) (sizeof(a)/sizeof(a[0]))
36 RF_HAL_FUNCS base; /* public state, must be first */
37 uint16_t pcdacTable[1]; /* XXX */
39 #define AR9280(ah) ((struct ar9280State *) AH5212(ah)->ah_rfHal)
41 static HAL_BOOL ar9280GetChannelMaxMinPower(struct ath_hal *,
42 const struct ieee80211_channel *, int16_t *maxPow,int16_t *minPow);
43 int16_t ar9280GetNfAdjust(struct ath_hal *ah, const HAL_CHANNEL_INTERNAL *c);
46 ar9280WriteRegs(struct ath_hal *ah, u_int modesIndex, u_int freqIndex,
49 (void) ath_hal_ini_write(ah, &AH5416(ah)->ah_ini_bb_rfgain,
54 * Take the MHz channel value and set the Channel value
56 * ASSUMES: Writes enabled to analog bus
61 * Channel Frequency = (3/4) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17)
65 * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^10)
66 * (freq_ref = 40MHz/(24>>amodeRefSel))
68 * For 5GHz channels which are 5MHz spaced,
69 * Channel Frequency = (3/2) * freq_ref * (chansel[8:0] + chanfrac[16:0]/2^17)
73 ar9280SetChannel(struct ath_hal *ah, const struct ieee80211_channel *chan)
75 uint16_t bMode, fracMode, aModeRefSel = 0;
76 uint32_t freq, ndiv, channelSel = 0, channelFrac = 0, reg32 = 0;
78 uint32_t refDivA = 24;
81 OS_MARK(ah, AH_MARK_SETCHANNEL, chan->ic_freq);
83 ar5416GetChannelCenters(ah, chan, ¢ers);
84 freq = centers.synth_center;
86 reg32 = OS_REG_READ(ah, AR_PHY_SYNTH_CONTROL);
89 if (ath_hal_eepromGet(ah, AR_EEP_FRAC_N_5G, &frac_n_5g) != HAL_OK)
92 if (freq < 4800) { /* 2 GHz, fractional mode */
98 channelSel = (freq * 0x10000)/15;
100 txctl = OS_REG_READ(ah, AR_PHY_CCK_TX_CTRL);
102 /* Enable channel spreading for channel 14 */
103 OS_REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
104 txctl | AR_PHY_CCK_TX_CTRL_JAPAN);
106 OS_REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
107 txctl &~ AR_PHY_CCK_TX_CTRL_JAPAN);
115 if ((freq % 20) == 0) {
117 } else if ((freq % 10) == 0) {
120 if (aModeRefSel) break;
124 /* Enable 2G (fractional) mode for channels which are 5MHz spaced */
127 channelSel = (freq * 0x8000)/15;
129 /* RefDivA setting */
130 OS_A_REG_RMW_FIELD(ah, AR_AN_SYNTH9,
131 AR_AN_SYNTH9_REFDIVA, refDivA);
135 ndiv = (freq * (refDivA >> aModeRefSel))/60;
136 channelSel = ndiv & 0x1ff;
137 channelFrac = (ndiv & 0xfffffe00) * 2;
138 channelSel = (channelSel << 17) | channelFrac;
142 reg32 = reg32 | (bMode << 29) | (fracMode << 28) |
143 (aModeRefSel << 26) | (channelSel);
145 OS_REG_WRITE(ah, AR_PHY_SYNTH_CONTROL, reg32);
147 AH_PRIVATE(ah)->ah_curchan = chan;
153 * Return a reference to the requested RF Bank.
156 ar9280GetRfBank(struct ath_hal *ah, int bank)
158 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unknown RF Bank %d requested\n",
164 * Reads EEPROM header info from device structure and programs
168 ar9280SetRfRegs(struct ath_hal *ah, const struct ieee80211_channel *chan,
169 uint16_t modesIndex, uint16_t *rfXpdGain)
171 return AH_TRUE; /* nothing to do */
175 * Read the transmit power levels from the structures taken from EEPROM
176 * Interpolate read transmit power values for this channel
177 * Organize the transmit power values into a table for writing into the hardware
181 ar9280SetPowerTable(struct ath_hal *ah, int16_t *pPowerMin, int16_t *pPowerMax,
182 const struct ieee80211_channel *chan, uint16_t *rfXpdGain)
189 ar9280GetMinPower(struct ath_hal *ah, EXPN_DATA_PER_CHANNEL_5112 *data)
192 int16_t minGain,minPwr,minPcdac,retVal;
194 /* Assume NUM_POINTS_XPD0 > 0 */
195 minGain = data->pDataPerXPD[0].xpd_gain;
196 for (minIndex=0,i=1; i<NUM_XPD_PER_CHANNEL; i++) {
197 if (data->pDataPerXPD[i].xpd_gain < minGain) {
199 minGain = data->pDataPerXPD[i].xpd_gain;
202 minPwr = data->pDataPerXPD[minIndex].pwr_t4[0];
203 minPcdac = data->pDataPerXPD[minIndex].pcdac[0];
204 for (i=1; i<NUM_POINTS_XPD0; i++) {
205 if (data->pDataPerXPD[minIndex].pwr_t4[i] < minPwr) {
206 minPwr = data->pDataPerXPD[minIndex].pwr_t4[i];
207 minPcdac = data->pDataPerXPD[minIndex].pcdac[i];
210 retVal = minPwr - (minPcdac*2);
216 ar9280GetChannelMaxMinPower(struct ath_hal *ah,
217 const struct ieee80211_channel *chan,
218 int16_t *maxPow, int16_t *minPow)
221 struct ath_hal_5212 *ahp = AH5212(ah);
222 int numChannels=0,i,last;
223 int totalD, totalF,totalMin;
224 EXPN_DATA_PER_CHANNEL_5112 *data=AH_NULL;
225 EEPROM_POWER_EXPN_5112 *powerArray=AH_NULL;
228 if (IS_CHAN_A(chan)) {
229 powerArray = ahp->ah_modePowerArray5112;
230 data = powerArray[headerInfo11A].pDataPerChannel;
231 numChannels = powerArray[headerInfo11A].numChannels;
232 } else if (IS_CHAN_G(chan) || IS_CHAN_108G(chan)) {
233 /* XXX - is this correct? Should we also use the same power for turbo G? */
234 powerArray = ahp->ah_modePowerArray5112;
235 data = powerArray[headerInfo11G].pDataPerChannel;
236 numChannels = powerArray[headerInfo11G].numChannels;
237 } else if (IS_CHAN_B(chan)) {
238 powerArray = ahp->ah_modePowerArray5112;
239 data = powerArray[headerInfo11B].pDataPerChannel;
240 numChannels = powerArray[headerInfo11B].numChannels;
244 /* Make sure the channel is in the range of the TP values
247 if ((numChannels < 1) ||
248 (chan->channel < data[0].channelValue) ||
249 (chan->channel > data[numChannels-1].channelValue))
252 /* Linearly interpolate the power value now */
254 (i<numChannels) && (chan->channel > data[i].channelValue);
256 totalD = data[i].channelValue - data[last].channelValue;
258 totalF = data[i].maxPower_t4 - data[last].maxPower_t4;
259 *maxPow = (int8_t) ((totalF*(chan->channel-data[last].channelValue) + data[last].maxPower_t4*totalD)/totalD);
261 totalMin = ar9280GetMinPower(ah,&data[i]) - ar9280GetMinPower(ah, &data[last]);
262 *minPow = (int8_t) ((totalMin*(chan->channel-data[last].channelValue) + ar9280GetMinPower(ah, &data[last])*totalD)/totalD);
265 if (chan->channel == data[i].channelValue) {
266 *maxPow = data[i].maxPower_t4;
267 *minPow = ar9280GetMinPower(ah, &data[i]);
273 *maxPow = *minPow = 0;
279 * The ordering of nfarray is thus:
281 * nfarray[0]: Chain 0 ctl
282 * nfarray[1]: Chain 1 ctl
283 * nfarray[2]: Chain 2 ctl
284 * nfarray[3]: Chain 0 ext
285 * nfarray[4]: Chain 1 ext
286 * nfarray[5]: Chain 2 ext
289 ar9280GetNoiseFloor(struct ath_hal *ah, int16_t nfarray[])
293 nf = MS(OS_REG_READ(ah, AR_PHY_CCA), AR9280_PHY_MINCCA_PWR);
295 nf = 0 - ((nf ^ 0x1ff) + 1);
296 HALDEBUG(ah, HAL_DEBUG_NFCAL,
297 "NF calibrated [ctl] [chain 0] is %d\n", nf);
300 nf = MS(OS_REG_READ(ah, AR_PHY_CH1_CCA), AR9280_PHY_CH1_MINCCA_PWR);
302 nf = 0 - ((nf ^ 0x1ff) + 1);
303 HALDEBUG(ah, HAL_DEBUG_NFCAL,
304 "NF calibrated [ctl] [chain 1] is %d\n", nf);
307 nf = MS(OS_REG_READ(ah, AR_PHY_EXT_CCA), AR9280_PHY_EXT_MINCCA_PWR);
309 nf = 0 - ((nf ^ 0x1ff) + 1);
310 HALDEBUG(ah, HAL_DEBUG_NFCAL,
311 "NF calibrated [ext] [chain 0] is %d\n", nf);
314 nf = MS(OS_REG_READ(ah, AR_PHY_CH1_EXT_CCA), AR9280_PHY_CH1_EXT_MINCCA_PWR);
316 nf = 0 - ((nf ^ 0x1ff) + 1);
317 HALDEBUG(ah, HAL_DEBUG_NFCAL,
318 "NF calibrated [ext] [chain 1] is %d\n", nf);
321 /* Chain 2 - invalid */
328 * Adjust NF based on statistical values for 5GHz frequencies.
329 * Stubbed:Not used by Fowl
332 ar9280GetNfAdjust(struct ath_hal *ah, const HAL_CHANNEL_INTERNAL *c)
338 * Free memory for analog bank scratch buffers
341 ar9280RfDetach(struct ath_hal *ah)
343 struct ath_hal_5212 *ahp = AH5212(ah);
345 HALASSERT(ahp->ah_rfHal != AH_NULL);
346 ath_hal_free(ahp->ah_rfHal);
347 ahp->ah_rfHal = AH_NULL;
351 ar9280RfAttach(struct ath_hal *ah, HAL_STATUS *status)
353 struct ath_hal_5212 *ahp = AH5212(ah);
354 struct ar9280State *priv;
356 HALDEBUG(ah, HAL_DEBUG_ATTACH, "%s: attach AR9280 radio\n", __func__);
358 HALASSERT(ahp->ah_rfHal == AH_NULL);
359 priv = ath_hal_malloc(sizeof(struct ar9280State));
360 if (priv == AH_NULL) {
361 HALDEBUG(ah, HAL_DEBUG_ANY,
362 "%s: cannot allocate private state\n", __func__);
363 *status = HAL_ENOMEM; /* XXX */
366 priv->base.rfDetach = ar9280RfDetach;
367 priv->base.writeRegs = ar9280WriteRegs;
368 priv->base.getRfBank = ar9280GetRfBank;
369 priv->base.setChannel = ar9280SetChannel;
370 priv->base.setRfRegs = ar9280SetRfRegs;
371 priv->base.setPowerTable = ar9280SetPowerTable;
372 priv->base.getChannelMaxMinPower = ar9280GetChannelMaxMinPower;
373 priv->base.getNfAdjust = ar9280GetNfAdjust;
375 ahp->ah_pcdacTable = priv->pcdacTable;
376 ahp->ah_pcdacTableSize = sizeof(priv->pcdacTable);
377 ahp->ah_rfHal = &priv->base;
379 * Set noise floor adjust method; we arrange a
380 * direct call instead of thunking.
382 AH_PRIVATE(ah)->ah_getNfAdjust = priv->base.getNfAdjust;
383 AH_PRIVATE(ah)->ah_getNoiseFloor = ar9280GetNoiseFloor;