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 | |