sys/dev/ath/ath_hal/ar5416/ar5416_spectral.c

   1 /*
   2  * Copyright (c) 2012 Qualcomm Atheros, All Rights Reserved.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  *
  16  * $FreeBSD$
  17  */
  18 #include "opt_ah.h"
  19
  20 #include "ah.h"
  21 #include "ah_internal.h"
  22 #include "ah_devid.h"
  23 #include "ah_desc.h"                    /* NB: for HAL_PHYERR* */
  24
  25 #include "ar5416/ar5416.h"
  26 #include "ar5416/ar5416reg.h"
  27 #include "ar5416/ar5416phy.h"
  28
  29 /*
  30  * Default AR9280 spectral scan parameters
  31  */
  32 #define AR5416_SPECTRAL_SCAN_ENA                0
  33 #define AR5416_SPECTRAL_SCAN_ACTIVE             0
  34 #define AR5416_SPECTRAL_SCAN_FFT_PERIOD         8
  35 #define AR5416_SPECTRAL_SCAN_PERIOD             1
  36 #define AR5416_SPECTRAL_SCAN_COUNT              16 //used to be 128
  37 #define AR5416_SPECTRAL_SCAN_SHORT_REPEAT       1
  38
  39 /* constants */
  40 #define MAX_RADAR_RSSI_THRESH   0x3f
  41 #define MAX_RADAR_HEIGHT        0x3f
  42 #define ENABLE_ALL_PHYERR       0xffffffff
  43
  44 static void ar5416DisableRadar(struct ath_hal *ah);
  45 static void ar5416PrepSpectralScan(struct ath_hal *ah);
  46
  47 static void
  48 ar5416DisableRadar(struct ath_hal *ah)
  49 {
  50         uint32_t val;
  51
  52         // Enable radar FFT
  53         val = OS_REG_READ(ah, AR_PHY_RADAR_0);
  54         val |= AR_PHY_RADAR_0_FFT_ENA;
  55
  56         // set radar detect thresholds to max to effectively disable radar
  57         val &= ~AR_PHY_RADAR_0_RRSSI;
  58         val |= SM(MAX_RADAR_RSSI_THRESH, AR_PHY_RADAR_0_RRSSI);
  59
  60         val &= ~AR_PHY_RADAR_0_HEIGHT;
  61         val |= SM(MAX_RADAR_HEIGHT, AR_PHY_RADAR_0_HEIGHT);
  62
  63         val &= ~(AR_PHY_RADAR_0_ENA);
  64         OS_REG_WRITE(ah, AR_PHY_RADAR_0, val);
  65
  66         // disable extension radar detect
  67         val = OS_REG_READ(ah, AR_PHY_RADAR_EXT);
  68         OS_REG_WRITE(ah, AR_PHY_RADAR_EXT, val & ~AR_PHY_RADAR_EXT_ENA);
  69
  70         val = OS_REG_READ(ah, AR_RX_FILTER);
  71         val |= (1<<13);
  72         OS_REG_WRITE(ah, AR_RX_FILTER, val);
  73 }
  74
  75 static void
  76 ar5416PrepSpectralScan(struct ath_hal *ah)
  77 {
  78
  79         ar5416DisableRadar(ah);
  80         OS_REG_WRITE(ah, AR_PHY_ERR, ENABLE_ALL_PHYERR);
  81 }
  82
  83 void
  84 ar5416ConfigureSpectralScan(struct ath_hal *ah, HAL_SPECTRAL_PARAM *ss)
  85 {
  86         uint32_t val;
  87
  88         ar5416PrepSpectralScan(ah);
  89
  90         val = OS_REG_READ(ah, AR_PHY_SPECTRAL_SCAN);
  91
  92         if (ss->ss_fft_period != HAL_SPECTRAL_PARAM_NOVAL) {
  93                 val &= ~AR_PHY_SPECTRAL_SCAN_FFT_PERIOD;
  94                 val |= SM(ss->ss_fft_period, AR_PHY_SPECTRAL_SCAN_FFT_PERIOD);
  95         }
  96
  97         if (ss->ss_period != HAL_SPECTRAL_PARAM_NOVAL) {
  98                 val &= ~AR_PHY_SPECTRAL_SCAN_PERIOD;
  99                 val |= SM(ss->ss_period, AR_PHY_SPECTRAL_SCAN_PERIOD);
 100         }
 101
 102         if (ss->ss_period != HAL_SPECTRAL_PARAM_NOVAL) {
 103                 val &= ~AR_PHY_SPECTRAL_SCAN_PERIOD;
 104                 val |= SM(ss->ss_period, AR_PHY_SPECTRAL_SCAN_PERIOD);
 105         }
 106
 107         /* This section is different for Kiwi and Merlin */
 108         if (AR_SREV_MERLIN(ah) ) {
 109                 if (ss->ss_count != HAL_SPECTRAL_PARAM_NOVAL) {
 110                         val &= ~AR_PHY_SPECTRAL_SCAN_COUNT;
 111                         val |= SM(ss->ss_count, AR_PHY_SPECTRAL_SCAN_COUNT);
 112                 }
 113
 114                 if (ss->ss_short_report == AH_TRUE) {
 115                         val |= AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT;
 116                 } else if (ss->ss_short_report != HAL_SPECTRAL_PARAM_NOVAL) {
 117                         val &= ~AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT;
 118                 }
 119         } else {
 120                 if (ss->ss_count != HAL_SPECTRAL_PARAM_NOVAL) {
 121                         /*
 122                          * In Merlin, for continous scan, scan_count = 128.
 123                          * In case of Kiwi, this value should be 0
 124                          */
 125                         if (ss->ss_count == 128)
 126                                 ss->ss_count = 0;
 127                         val &= ~AR_PHY_SPECTRAL_SCAN_COUNT_KIWI;
 128                         val |= SM(ss->ss_count, AR_PHY_SPECTRAL_SCAN_COUNT_KIWI);
 129                 }
 130
 131                 if (ss->ss_short_report == AH_TRUE) {
 132                         val |= AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT_KIWI;
 133                 } else if (ss->ss_short_report != HAL_SPECTRAL_PARAM_NOVAL) {
 134                         val &= ~AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT_KIWI;
 135                 }
 136
 137                 //Select the mask to be same as before
 138                 val |= AR_PHY_SPECTRAL_SCAN_PHYERR_MASK_SELECT_KIWI;
 139         }
 140         // Enable spectral scan
 141         OS_REG_WRITE(ah, AR_PHY_SPECTRAL_SCAN, val | AR_PHY_SPECTRAL_SCAN_ENA);
 142
 143         ar5416GetSpectralParams(ah, ss);
 144 }
 145
 146 /*
 147  * Get the spectral parameter values and return them in the pe
 148  * structure
 149  */
 150 void
 151 ar5416GetSpectralParams(struct ath_hal *ah, HAL_SPECTRAL_PARAM *ss)
 152 {
 153         uint32_t val;
 154
 155         val = OS_REG_READ(ah, AR_PHY_SPECTRAL_SCAN);
 156
 157         ss->ss_fft_period = MS(val, AR_PHY_SPECTRAL_SCAN_FFT_PERIOD);
 158         ss->ss_period = MS(val, AR_PHY_SPECTRAL_SCAN_PERIOD);
 159         if (AR_SREV_MERLIN(ah) ) {
 160                 ss->ss_count = MS(val, AR_PHY_SPECTRAL_SCAN_COUNT);
 161                 ss->ss_short_report = MS(val, AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT);
 162         } else {
 163                 ss->ss_count = MS(val, AR_PHY_SPECTRAL_SCAN_COUNT_KIWI);
 164                 ss->ss_short_report = MS(val, AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT_KIWI);
 165         }
 166         val = OS_REG_READ(ah, AR_PHY_RADAR_1);
 167         ss->radar_bin_thresh_sel = MS(val, AR_PHY_RADAR_1_BIN_THRESH_SELECT);
 168 }
 169
 170 HAL_BOOL
 171 ar5416IsSpectralActive(struct ath_hal *ah)
 172 {
 173         uint32_t val;
 174
 175         val = OS_REG_READ(ah, AR_PHY_SPECTRAL_SCAN);
 176         return MS(val, AR_PHY_SPECTRAL_SCAN_ACTIVE);
 177 }
 178
 179 HAL_BOOL
 180 ar5416IsSpectralEnabled(struct ath_hal *ah)
 181 {
 182         uint32_t val;
 183
 184         val = OS_REG_READ(ah, AR_PHY_SPECTRAL_SCAN);
 185         return MS(val,AR_PHY_SPECTRAL_SCAN_ENA);
 186 }
 187
 188 void
 189 ar5416StartSpectralScan(struct ath_hal *ah)
 190 {
 191         uint32_t val;
 192
 193         ar5416PrepSpectralScan(ah);
 194
 195         // Activate spectral scan
 196         val = OS_REG_READ(ah, AR_PHY_SPECTRAL_SCAN);
 197         val |= AR_PHY_SPECTRAL_SCAN_ENA;
 198         val |= AR_PHY_SPECTRAL_SCAN_ACTIVE;
 199         OS_REG_WRITE(ah, AR_PHY_SPECTRAL_SCAN, val);
 200         val = OS_REG_READ(ah, AR_PHY_SPECTRAL_SCAN);
 201         val = OS_REG_READ(ah, AR_PHY_ERR_MASK_REG);
 202         OS_REG_WRITE(ah, AR_PHY_ERR_MASK_REG, val | AR_PHY_ERR_RADAR);
 203 }
 204
 205 void
 206 ar5416StopSpectralScan(struct ath_hal *ah)
 207 {
 208         uint32_t val;
 209         val = OS_REG_READ(ah, AR_PHY_SPECTRAL_SCAN);
 210
 211         // Deactivate spectral scan
 212         val &= ~AR_PHY_SPECTRAL_SCAN_ENA;
 213         val &= ~AR_PHY_SPECTRAL_SCAN_ACTIVE;
 214         OS_REG_WRITE(ah, AR_PHY_SPECTRAL_SCAN, val);
 215         val = OS_REG_READ(ah, AR_PHY_SPECTRAL_SCAN);
 216         val = OS_REG_READ(ah, AR_PHY_ERR_MASK_REG) & (~AR_PHY_ERR_RADAR);
 217         OS_REG_WRITE(ah, AR_PHY_ERR_MASK_REG, val);
 218 }
 219
 220 uint32_t
 221 ar5416GetSpectralConfig(struct ath_hal *ah)
 222 {
 223         uint32_t val;
 224
 225         val = OS_REG_READ(ah, AR_PHY_SPECTRAL_SCAN);
 226         return val;
 227 }
 228
 229 void
 230 ar5416RestoreSpectralConfig(struct ath_hal *ah, uint32_t restoreval)
 231 {
 232         uint32_t curval;
 233
 234         ar5416PrepSpectralScan(ah);
 235
 236         curval = OS_REG_READ(ah, AR_PHY_SPECTRAL_SCAN);
 237
 238         if (restoreval != curval) {
 239                 restoreval |= AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT;
 240                 OS_REG_WRITE(ah, AR_PHY_SPECTRAL_SCAN, restoreval);
 241         }
 242         return;
 243 }
 244