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[FreeBSD/releng/7.2.git] / sys / dev / ath / ath_hal / ar5416 / ar2133.c
1 /*
2  * Copyright (c) 2002-2008 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  * $Id: ar2133.c,v 1.13 2008/11/11 00:11:30 sam Exp $
18  */
19 #include "opt_ah.h"
20
21 #include "ah.h"
22 #include "ah_internal.h"
23
24 #include "ah_eeprom_v14.h"
25
26 #include "ar5416/ar5416.h"
27 #include "ar5416/ar5416reg.h"
28 #include "ar5416/ar5416phy.h"
29
30 #define N(a)    (sizeof(a)/sizeof(a[0]))
31
32 struct ar2133State {
33         RF_HAL_FUNCS    base;           /* public state, must be first */
34         uint16_t        pcdacTable[1];
35
36         uint32_t        *Bank0Data;
37         uint32_t        *Bank1Data;
38         uint32_t        *Bank2Data;
39         uint32_t        *Bank3Data;
40         uint32_t        *Bank6Data;
41         uint32_t        *Bank7Data;
42
43         /* NB: Bank*Data storage follows */
44 };
45 #define AR2133(ah)      ((struct ar2133State *) AH5212(ah)->ah_rfHal)
46
47 #define ar5416ModifyRfBuffer    ar5212ModifyRfBuffer    /*XXX*/
48
49 extern  void ar5416ModifyRfBuffer(uint32_t *rfBuf, uint32_t reg32,
50         uint32_t numBits, uint32_t firstBit, uint32_t column);
51 HAL_BOOL ar2133GetChipPowerLimits(struct ath_hal *ah, HAL_CHANNEL 
52         *chans, uint32_t nchans);
53         
54 static HAL_BOOL ar2133GetChannelMaxMinPower(struct ath_hal *, HAL_CHANNEL *, 
55                 int16_t *maxPow,int16_t *minPow);
56 int16_t ar2133GetNfAdjust(struct ath_hal *ah, const HAL_CHANNEL_INTERNAL *c);
57
58 static void
59 ar2133WriteRegs(struct ath_hal *ah, u_int modesIndex, u_int freqIndex,
60         int writes)
61 {
62         (void) ath_hal_ini_write(ah, &AH5416(ah)->ah_ini_bb_rfgain,
63                 freqIndex, writes);
64 }
65
66 /*
67  * Take the MHz channel value and set the Channel value
68  *
69  * ASSUMES: Writes enabled to analog bus
70  */
71 static HAL_BOOL
72 ar2133SetChannel(struct ath_hal *ah,  HAL_CHANNEL_INTERNAL *chan)
73 {
74         uint32_t channelSel  = 0;
75         uint32_t bModeSynth  = 0;
76         uint32_t aModeRefSel = 0;
77         uint32_t reg32       = 0;
78         uint16_t freq;
79         CHAN_CENTERS centers;
80     
81         OS_MARK(ah, AH_MARK_SETCHANNEL, chan->channel);
82     
83         ar5416GetChannelCenters(ah,  chan, &centers);
84         freq = centers.synth_center;
85
86         if (freq < 4800) {
87                 uint32_t txctl;
88
89                 if (((freq - 2192) % 5) == 0) {
90                         channelSel = ((freq - 672) * 2 - 3040)/10;
91                         bModeSynth = 0;
92                 } else if (((freq - 2224) % 5) == 0) {
93                         channelSel = ((freq - 704) * 2 - 3040) / 10;
94                         bModeSynth = 1;
95                 } else {
96                         HALDEBUG(ah, HAL_DEBUG_ANY,
97                             "%s: invalid channel %u MHz\n", __func__, freq);
98                         return AH_FALSE;
99                 }
100
101                 channelSel = (channelSel << 2) & 0xff;
102                 channelSel = ath_hal_reverseBits(channelSel, 8);
103
104                 txctl = OS_REG_READ(ah, AR_PHY_CCK_TX_CTRL);
105                 if (freq == 2484) {
106                         /* Enable channel spreading for channel 14 */
107                         OS_REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
108                                 txctl | AR_PHY_CCK_TX_CTRL_JAPAN);
109                 } else {
110                         OS_REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
111                         txctl &~ AR_PHY_CCK_TX_CTRL_JAPAN);
112                 }
113         } else if ((freq % 20) == 0 && freq >= 5120) {
114                 channelSel = ath_hal_reverseBits(((freq - 4800) / 20 << 2), 8);
115                 if (AR_SREV_SOWL_10_OR_LATER(ah))
116                         aModeRefSel = ath_hal_reverseBits(3, 2);
117                 else
118                         aModeRefSel = ath_hal_reverseBits(1, 2);
119         } else if ((freq % 10) == 0) {
120                 channelSel = ath_hal_reverseBits(((freq - 4800) / 10 << 1), 8);
121                 if (AR_SREV_SOWL_10_OR_LATER(ah))
122                         aModeRefSel = ath_hal_reverseBits(2, 2);
123                 else
124                         aModeRefSel = ath_hal_reverseBits(1, 2);
125         } else if ((freq % 5) == 0) {
126                 channelSel = ath_hal_reverseBits((freq - 4800) / 5, 8);
127                 aModeRefSel = ath_hal_reverseBits(1, 2);
128         } else {
129                 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid channel %u MHz\n",
130                     __func__, freq);
131                 return AH_FALSE;
132         }
133
134         reg32 = (channelSel << 8) | (aModeRefSel << 2) | (bModeSynth << 1) |
135                 (1 << 5) | 0x1;
136
137         OS_REG_WRITE(ah, AR_PHY(0x37), reg32);
138
139         AH_PRIVATE(ah)->ah_curchan = chan;
140         return AH_TRUE;
141
142 }
143
144 /*
145  * Return a reference to the requested RF Bank.
146  */
147 static uint32_t *
148 ar2133GetRfBank(struct ath_hal *ah, int bank)
149 {
150         struct ar2133State *priv = AR2133(ah);
151
152         HALASSERT(priv != AH_NULL);
153         switch (bank) {
154         case 1: return priv->Bank1Data;
155         case 2: return priv->Bank2Data;
156         case 3: return priv->Bank3Data;
157         case 6: return priv->Bank6Data;
158         case 7: return priv->Bank7Data;
159         }
160         HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unknown RF Bank %d requested\n",
161             __func__, bank);
162         return AH_NULL;
163 }
164
165 /*
166  * Reads EEPROM header info from device structure and programs
167  * all rf registers
168  *
169  * REQUIRES: Access to the analog rf device
170  */
171 static HAL_BOOL
172 ar2133SetRfRegs(struct ath_hal *ah, HAL_CHANNEL_INTERNAL *chan,
173                 uint16_t modesIndex, uint16_t *rfXpdGain)
174 {
175         struct ar2133State *priv = AR2133(ah);
176         int writes;
177
178         HALASSERT(priv);
179
180         /* Setup Bank 0 Write */
181         ath_hal_ini_bank_setup(priv->Bank0Data, &AH5416(ah)->ah_ini_bank0, 1);
182
183         /* Setup Bank 1 Write */
184         ath_hal_ini_bank_setup(priv->Bank1Data, &AH5416(ah)->ah_ini_bank1, 1);
185
186         /* Setup Bank 2 Write */
187         ath_hal_ini_bank_setup(priv->Bank2Data, &AH5416(ah)->ah_ini_bank2, 1);
188
189         /* Setup Bank 3 Write */
190         ath_hal_ini_bank_setup(priv->Bank3Data, &AH5416(ah)->ah_ini_bank3, modesIndex);
191
192         /* Setup Bank 6 Write */
193         ath_hal_ini_bank_setup(priv->Bank6Data, &AH5416(ah)->ah_ini_bank6, modesIndex);
194         
195         /* Only the 5 or 2 GHz OB/DB need to be set for a mode */
196         if (IS_CHAN_2GHZ(chan)) {
197                 ar5416ModifyRfBuffer(priv->Bank6Data,
198                     ath_hal_eepromGet(ah, AR_EEP_OB_2, AH_NULL), 3, 197, 0);
199                 ar5416ModifyRfBuffer(priv->Bank6Data,
200                     ath_hal_eepromGet(ah, AR_EEP_DB_2, AH_NULL), 3, 194, 0);
201         } else {
202                 ar5416ModifyRfBuffer(priv->Bank6Data,
203                     ath_hal_eepromGet(ah, AR_EEP_OB_5, AH_NULL), 3, 203, 0);
204                 ar5416ModifyRfBuffer(priv->Bank6Data,
205                     ath_hal_eepromGet(ah, AR_EEP_DB_5, AH_NULL), 3, 200, 0);
206         }
207         /* Setup Bank 7 Setup */
208         ath_hal_ini_bank_setup(priv->Bank7Data, &AH5416(ah)->ah_ini_bank7, 1);
209
210         /* Write Analog registers */
211         writes = ath_hal_ini_bank_write(ah, &AH5416(ah)->ah_ini_bank0,
212             priv->Bank0Data, 0);
213         writes = ath_hal_ini_bank_write(ah, &AH5416(ah)->ah_ini_bank1,
214             priv->Bank1Data, writes);
215         writes = ath_hal_ini_bank_write(ah, &AH5416(ah)->ah_ini_bank2,
216             priv->Bank2Data, writes);
217         writes = ath_hal_ini_bank_write(ah, &AH5416(ah)->ah_ini_bank3,
218             priv->Bank3Data, writes);
219         writes = ath_hal_ini_bank_write(ah, &AH5416(ah)->ah_ini_bank6,
220             priv->Bank6Data, writes);
221         (void) ath_hal_ini_bank_write(ah, &AH5416(ah)->ah_ini_bank7,
222             priv->Bank7Data, writes);
223
224         return AH_TRUE;
225 #undef  RF_BANK_SETUP
226 }
227
228 /*
229  * Read the transmit power levels from the structures taken from EEPROM
230  * Interpolate read transmit power values for this channel
231  * Organize the transmit power values into a table for writing into the hardware
232  */
233
234 static HAL_BOOL
235 ar2133SetPowerTable(struct ath_hal *ah, int16_t *pPowerMin, int16_t *pPowerMax, 
236         HAL_CHANNEL_INTERNAL *chan, uint16_t *rfXpdGain)
237 {
238         return AH_TRUE;
239 }
240
241 #if 0
242 static int16_t
243 ar2133GetMinPower(struct ath_hal *ah, EXPN_DATA_PER_CHANNEL_5112 *data)
244 {
245     int i, minIndex;
246     int16_t minGain,minPwr,minPcdac,retVal;
247
248     /* Assume NUM_POINTS_XPD0 > 0 */
249     minGain = data->pDataPerXPD[0].xpd_gain;
250     for (minIndex=0,i=1; i<NUM_XPD_PER_CHANNEL; i++) {
251         if (data->pDataPerXPD[i].xpd_gain < minGain) {
252             minIndex = i;
253             minGain = data->pDataPerXPD[i].xpd_gain;
254         }
255     }
256     minPwr = data->pDataPerXPD[minIndex].pwr_t4[0];
257     minPcdac = data->pDataPerXPD[minIndex].pcdac[0];
258     for (i=1; i<NUM_POINTS_XPD0; i++) {
259         if (data->pDataPerXPD[minIndex].pwr_t4[i] < minPwr) {
260             minPwr = data->pDataPerXPD[minIndex].pwr_t4[i];
261             minPcdac = data->pDataPerXPD[minIndex].pcdac[i];
262         }
263     }
264     retVal = minPwr - (minPcdac*2);
265     return(retVal);
266 }
267 #endif
268
269 static HAL_BOOL
270 ar2133GetChannelMaxMinPower(struct ath_hal *ah, HAL_CHANNEL *chan, int16_t *maxPow,
271                 int16_t *minPow)
272 {
273 #if 0
274     struct ath_hal_5212 *ahp = AH5212(ah);
275     int numChannels=0,i,last;
276     int totalD, totalF,totalMin;
277     EXPN_DATA_PER_CHANNEL_5112 *data=AH_NULL;
278     EEPROM_POWER_EXPN_5112 *powerArray=AH_NULL;
279
280     *maxPow = 0;
281     if (IS_CHAN_A(chan)) {
282         powerArray = ahp->ah_modePowerArray5112;
283         data = powerArray[headerInfo11A].pDataPerChannel;
284         numChannels = powerArray[headerInfo11A].numChannels;
285     } else if (IS_CHAN_G(chan) || IS_CHAN_108G(chan)) {
286         /* XXX - is this correct? Should we also use the same power for turbo G? */
287         powerArray = ahp->ah_modePowerArray5112;
288         data = powerArray[headerInfo11G].pDataPerChannel;
289         numChannels = powerArray[headerInfo11G].numChannels;
290     } else if (IS_CHAN_B(chan)) {
291         powerArray = ahp->ah_modePowerArray5112;
292         data = powerArray[headerInfo11B].pDataPerChannel;
293         numChannels = powerArray[headerInfo11B].numChannels;
294     } else {
295         return (AH_TRUE);
296     }
297     /* Make sure the channel is in the range of the TP values
298      *  (freq piers)
299      */
300     if ((numChannels < 1) ||
301         (chan->channel < data[0].channelValue) ||
302         (chan->channel > data[numChannels-1].channelValue))
303         return(AH_FALSE);
304
305     /* Linearly interpolate the power value now */
306     for (last=0,i=0;
307          (i<numChannels) && (chan->channel > data[i].channelValue);
308          last=i++);
309     totalD = data[i].channelValue - data[last].channelValue;
310     if (totalD > 0) {
311         totalF = data[i].maxPower_t4 - data[last].maxPower_t4;
312         *maxPow = (int8_t) ((totalF*(chan->channel-data[last].channelValue) + data[last].maxPower_t4*totalD)/totalD);
313
314         totalMin = ar2133GetMinPower(ah,&data[i]) - ar2133GetMinPower(ah, &data[last]);
315         *minPow = (int8_t) ((totalMin*(chan->channel-data[last].channelValue) + ar2133GetMinPower(ah, &data[last])*totalD)/totalD);
316         return (AH_TRUE);
317     } else {
318         if (chan->channel == data[i].channelValue) {
319             *maxPow = data[i].maxPower_t4;
320             *minPow = ar2133GetMinPower(ah, &data[i]);
321             return(AH_TRUE);
322         } else
323             return(AH_FALSE);
324     }
325 #else
326     *maxPow = *minPow = 0;
327         return AH_FALSE;
328 #endif
329 }
330
331 static void 
332 ar2133GetNoiseFloor(struct ath_hal *ah, int16_t nfarray[])
333 {
334         struct ath_hal_5416 *ahp = AH5416(ah);
335         int16_t nf;
336
337         switch (ahp->ah_rx_chainmask) {
338         case 0x7:
339                 nf = MS(OS_REG_READ(ah, AR_PHY_CH2_CCA), AR_PHY_CH2_MINCCA_PWR);
340                 if (nf & 0x100)
341                         nf = 0 - ((nf ^ 0x1ff) + 1);
342                 HALDEBUG(ah, HAL_DEBUG_NFCAL,
343                     "NF calibrated [ctl] [chain 2] is %d\n", nf);
344                 nfarray[4] = nf;
345
346                 nf = MS(OS_REG_READ(ah, AR_PHY_CH2_EXT_CCA), AR_PHY_CH2_EXT_MINCCA_PWR);
347                 if (nf & 0x100)
348                         nf = 0 - ((nf ^ 0x1ff) + 1);
349                 HALDEBUG(ah, HAL_DEBUG_NFCAL,
350                     "NF calibrated [ext] [chain 2] is %d\n", nf);
351                 nfarray[5] = nf;
352                 /* fall thru... */
353         case 0x3:
354         case 0x5:
355                 nf = MS(OS_REG_READ(ah, AR_PHY_CH1_CCA), AR_PHY_CH1_MINCCA_PWR);
356                 if (nf & 0x100)
357                         nf = 0 - ((nf ^ 0x1ff) + 1);
358                 HALDEBUG(ah, HAL_DEBUG_NFCAL,
359                     "NF calibrated [ctl] [chain 1] is %d\n", nf);
360                 nfarray[2] = nf;
361
362
363                 nf = MS(OS_REG_READ(ah, AR_PHY_CH1_EXT_CCA), AR_PHY_CH1_EXT_MINCCA_PWR);
364                 if (nf & 0x100)
365                         nf = 0 - ((nf ^ 0x1ff) + 1);
366                 HALDEBUG(ah, HAL_DEBUG_NFCAL,
367                     "NF calibrated [ext] [chain 1] is %d\n", nf);
368                 nfarray[3] = nf;
369                 /* fall thru... */
370         case 0x1:
371                 nf = MS(OS_REG_READ(ah, AR_PHY_CCA), AR_PHY_MINCCA_PWR);
372                 if (nf & 0x100)
373                         nf = 0 - ((nf ^ 0x1ff) + 1);
374                 HALDEBUG(ah, HAL_DEBUG_NFCAL,
375                     "NF calibrated [ctl] [chain 0] is %d\n", nf);
376                 nfarray[0] = nf;
377
378                 nf = MS(OS_REG_READ(ah, AR_PHY_EXT_CCA), AR_PHY_EXT_MINCCA_PWR);
379                 if (nf & 0x100)
380                         nf = 0 - ((nf ^ 0x1ff) + 1);
381                 HALDEBUG(ah, HAL_DEBUG_NFCAL,
382                     "NF calibrated [ext] [chain 0] is %d\n", nf);
383                 nfarray[1] = nf;
384
385                 break;
386         }
387 }
388
389 /*
390  * Adjust NF based on statistical values for 5GHz frequencies.
391  * Stubbed:Not used by Fowl
392  */
393 int16_t
394 ar2133GetNfAdjust(struct ath_hal *ah, const HAL_CHANNEL_INTERNAL *c)
395 {
396         return 0;
397 }
398
399 /*
400  * Free memory for analog bank scratch buffers
401  */
402 static void
403 ar2133RfDetach(struct ath_hal *ah)
404 {
405         struct ath_hal_5212 *ahp = AH5212(ah);
406
407         HALASSERT(ahp->ah_rfHal != AH_NULL);
408         ath_hal_free(ahp->ah_rfHal);
409         ahp->ah_rfHal = AH_NULL;
410 }
411         
412 /*
413  * Allocate memory for analog bank scratch buffers
414  * Scratch Buffer will be reinitialized every reset so no need to zero now
415  */
416 HAL_BOOL
417 ar2133RfAttach(struct ath_hal *ah, HAL_STATUS *status)
418 {
419         struct ath_hal_5212 *ahp = AH5212(ah);
420         struct ar2133State *priv;
421         uint32_t *bankData;
422
423         HALASSERT(ahp->ah_rfHal == AH_NULL);
424         priv = ath_hal_malloc(sizeof(struct ar2133State)
425             + AH5416(ah)->ah_ini_bank0.rows * sizeof(uint32_t)
426             + AH5416(ah)->ah_ini_bank1.rows * sizeof(uint32_t)
427             + AH5416(ah)->ah_ini_bank2.rows * sizeof(uint32_t)
428             + AH5416(ah)->ah_ini_bank3.rows * sizeof(uint32_t)
429             + AH5416(ah)->ah_ini_bank6.rows * sizeof(uint32_t)
430             + AH5416(ah)->ah_ini_bank7.rows * sizeof(uint32_t)
431         );
432         if (priv == AH_NULL) {
433                 HALDEBUG(ah, HAL_DEBUG_ANY,
434                     "%s: cannot allocate private state\n", __func__);
435                 *status = HAL_ENOMEM;           /* XXX */
436                 return AH_FALSE;
437         }
438         priv->base.rfDetach             = ar2133RfDetach;
439         priv->base.writeRegs            = ar2133WriteRegs;
440         priv->base.getRfBank            = ar2133GetRfBank;
441         priv->base.setChannel           = ar2133SetChannel;
442         priv->base.setRfRegs            = ar2133SetRfRegs;
443         priv->base.setPowerTable        = ar2133SetPowerTable;
444         priv->base.getChannelMaxMinPower = ar2133GetChannelMaxMinPower;
445         priv->base.getNfAdjust          = ar2133GetNfAdjust;
446
447         bankData = (uint32_t *) &priv[1];
448         priv->Bank0Data = bankData, bankData += AH5416(ah)->ah_ini_bank0.rows;
449         priv->Bank1Data = bankData, bankData += AH5416(ah)->ah_ini_bank1.rows;
450         priv->Bank2Data = bankData, bankData += AH5416(ah)->ah_ini_bank2.rows;
451         priv->Bank3Data = bankData, bankData += AH5416(ah)->ah_ini_bank3.rows;
452         priv->Bank6Data = bankData, bankData += AH5416(ah)->ah_ini_bank6.rows;
453         priv->Bank7Data = bankData, bankData += AH5416(ah)->ah_ini_bank7.rows;
454
455         ahp->ah_pcdacTable = priv->pcdacTable;
456         ahp->ah_pcdacTableSize = sizeof(priv->pcdacTable);
457         ahp->ah_rfHal = &priv->base;
458         /*
459          * Set noise floor adjust method; we arrange a
460          * direct call instead of thunking.
461          */
462         AH_PRIVATE(ah)->ah_getNfAdjust = priv->base.getNfAdjust;
463         AH_PRIVATE(ah)->ah_getNoiseFloor = ar2133GetNoiseFloor;
464
465         return AH_TRUE;
466 }