/*
* Do periodic processing. This routine is called from a timer
*/
void
ar9300_ani_ar_poll(struct ath_hal *ah, const HAL_NODE_STATS *stats,
const struct ieee80211_channel *chan, HAL_ANISTATS *ani_stats)
{
struct ath_hal_9300 *ahp = AH9300(ah);
struct ar9300_ani_state *ani_state;
int32_t listen_time;
u_int32_t ofdm_phy_err_rate, cck_phy_err_rate;
u_int32_t ofdm_phy_err_cnt, cck_phy_err_cnt;
HAL_BOOL old_phy_noise_spur;
ani_state = ahp->ah_curani;
ahp->ah_stats.ast_nodestats = *stats; /* XXX optimize? */
if (ani_state == NULL) {
/* should not happen */
HALDEBUG(ah, HAL_DEBUG_UNMASKABLE,
"%s: can't poll - no ANI not initialized for this channel\n",
__func__);
return;
}
/*
* ar9300_ani_ar_poll is never called while scanning but we may have been
* scanning and now just restarted polling. In this case we need to
* restore historical values.
*/
if (ani_state->must_restore) {
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: must restore - calling ar9300_ani_restart\n", __func__);
ar9300_ani_reset(ah, AH_FALSE);
return;
}
listen_time = ar9300_ani_get_listen_time(ah, ani_stats);
if (listen_time <= 0) {
ahp->ah_stats.ast_ani_lneg++;
/* restart ANI period if listen_time is invalid */
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: listen_time=%d - calling ar9300_ani_restart\n",
__func__, listen_time);
ar9300_ani_restart(ah);
return;
}
/* XXX beware of overflow? */
ani_state->listen_time += listen_time;
/* Clear the mib counters and save them in the stats */
ar9300_update_mib_mac_stats(ah);
/* NB: these are not reset-on-read */
ofdm_phy_err_cnt = OS_REG_READ(ah, AR_PHY_ERR_1);
cck_phy_err_cnt = OS_REG_READ(ah, AR_PHY_ERR_2);
/* NB: only use ast_ani_*errs with AH_PRIVATE_DIAG */
ahp->ah_stats.ast_ani_ofdmerrs +=
ofdm_phy_err_cnt - ani_state->ofdm_phy_err_count;
ani_state->ofdm_phy_err_count = ofdm_phy_err_cnt;
ahp->ah_stats.ast_ani_cckerrs +=
cck_phy_err_cnt - ani_state->cck_phy_err_count;
ani_state->cck_phy_err_count = cck_phy_err_cnt;
#if HAL_ANI_DEBUG
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: Errors: OFDM=0x%08x-0x0=%d CCK=0x%08x-0x0=%d\n",
__func__, ofdm_phy_err_cnt, ofdm_phy_err_cnt,
cck_phy_err_cnt, cck_phy_err_cnt);
#endif
/*
* If ani is not enabled, return after we've collected
* statistics
*/
if (!DO_ANI(ah)) {
return;
}
ofdm_phy_err_rate =
ani_state->ofdm_phy_err_count * 1000 / ani_state->listen_time;
cck_phy_err_rate =
ani_state->cck_phy_err_count * 1000 / ani_state->listen_time;
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: listen_time=%d OFDM:%d errs=%d/s CCK:%d errs=%d/s ofdm_turn=%d\n",
__func__, listen_time,
ani_state->ofdm_noise_immunity_level, ofdm_phy_err_rate,
ani_state->cck_noise_immunity_level, cck_phy_err_rate,
ani_state->ofdms_turn);
if (ani_state->listen_time >= HAL_NOISE_DETECT_PERIOD) {
old_phy_noise_spur = ani_state->phy_noise_spur;
if (ofdm_phy_err_rate <= ani_state->ofdm_trig_low &&
cck_phy_err_rate <= ani_state->cck_trig_low) {
if (ani_state->listen_time >= HAL_NOISE_RECOVER_PERIOD) {
ani_state->phy_noise_spur = 0;
}
} else {
ani_state->phy_noise_spur = 1;
}
if (old_phy_noise_spur != ani_state->phy_noise_spur) {
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: enviroment change from %d to %d\n",
__func__, old_phy_noise_spur, ani_state->phy_noise_spur);
}
}
if (ani_state->listen_time > 5 * ahp->ah_ani_period) {
/*
* Check to see if need to lower immunity if
* 5 ani_periods have passed
*/
if (ofdm_phy_err_rate <= ani_state->ofdm_trig_low &&
cck_phy_err_rate <= ani_state->cck_trig_low)
{
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: 1. listen_time=%d OFDM:%d errs=%d/s(<%d) "
"CCK:%d errs=%d/s(<%d) -> ar9300_ani_lower_immunity\n",
__func__, ani_state->listen_time,
ani_state->ofdm_noise_immunity_level, ofdm_phy_err_rate,
ani_state->ofdm_trig_low, ani_state->cck_noise_immunity_level,
cck_phy_err_rate, ani_state->cck_trig_low);
ar9300_ani_lower_immunity(ah);
ani_state->ofdms_turn = !ani_state->ofdms_turn;
}
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: 1 listen_time=%d ofdm=%d/s cck=%d/s - "
"calling ar9300_ani_restart\n",
__func__, ani_state->listen_time,
ofdm_phy_err_rate, cck_phy_err_rate);
ar9300_ani_restart(ah);
} else if (ani_state->listen_time > ahp->ah_ani_period) {
/* check to see if need to raise immunity */
if (ofdm_phy_err_rate > ani_state->ofdm_trig_high &&
(cck_phy_err_rate <= ani_state->cck_trig_high ||
ani_state->ofdms_turn))
{
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: 2 listen_time=%d OFDM:%d errs=%d/s(>%d) -> "
"ar9300_ani_ofdm_err_trigger\n",
__func__, ani_state->listen_time,
ani_state->ofdm_noise_immunity_level, ofdm_phy_err_rate,
ani_state->ofdm_trig_high);
ar9300_ani_ofdm_err_trigger(ah);
ar9300_ani_restart(ah);
ani_state->ofdms_turn = AH_FALSE;
} else if (cck_phy_err_rate > ani_state->cck_trig_high) {
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: 3 listen_time=%d CCK:%d errs=%d/s(>%d) -> "
"ar9300_ani_cck_err_trigger\n",
__func__, ani_state->listen_time,
ani_state->cck_noise_immunity_level, cck_phy_err_rate,
ani_state->cck_trig_high);
ar9300_ani_cck_err_trigger(ah);
ar9300_ani_restart(ah);
ani_state->ofdms_turn = AH_TRUE;
}
}
}
/*
* Control Adaptive Noise Immunity Parameters
*/
HAL_BOOL
ar9300_ani_control(struct ath_hal *ah, HAL_ANI_CMD cmd, int param)
{
struct ath_hal_9300 *ahp = AH9300(ah);
struct ar9300_ani_state *ani_state = ahp->ah_curani;
const struct ieee80211_channel *chan = AH_PRIVATE(ah)->ah_curchan;
int32_t value, value2;
u_int level = param;
u_int is_on;
if (chan == NULL && cmd != HAL_ANI_MODE) {
HALDEBUG(ah, HAL_DEBUG_UNMASKABLE,
"%s: ignoring cmd 0x%02x - no channel\n", __func__, cmd);
return AH_FALSE;
}
switch (cmd & ahp->ah_ani_function) {
case HAL_ANI_OFDM_WEAK_SIGNAL_DETECTION:
{
int m1_thresh_low, m2_thresh_low;
int m1_thresh, m2_thresh;
int m2_count_thr, m2_count_thr_low;
int m1_thresh_low_ext, m2_thresh_low_ext;
int m1_thresh_ext, m2_thresh_ext;
/*
* is_on == 1 means ofdm weak signal detection is ON
* (default, less noise imm)
* is_on == 0 means ofdm weak signal detection is OFF
* (more noise imm)
*/
is_on = param ? 1 : 0;
if (AR_SREV_JUPITER(ah) || AR_SREV_APHRODITE(ah))
goto skip_ws_det;
/*
* make register setting for default (weak sig detect ON)
* come from INI file
*/
m1_thresh_low = is_on ?
ani_state->ini_def.m1_thresh_low : m1_thresh_low_off;
m2_thresh_low = is_on ?
ani_state->ini_def.m2_thresh_low : m2_thresh_low_off;
m1_thresh = is_on ?
ani_state->ini_def.m1_thresh : m1_thresh_off;
m2_thresh = is_on ?
ani_state->ini_def.m2_thresh : m2_thresh_off;
m2_count_thr = is_on ?
ani_state->ini_def.m2_count_thr : m2_count_thr_off;
m2_count_thr_low = is_on ?
ani_state->ini_def.m2_count_thr_low : m2_count_thr_low_off;
m1_thresh_low_ext = is_on ?
ani_state->ini_def.m1_thresh_low_ext : m1_thresh_low_ext_off;
m2_thresh_low_ext = is_on ?
ani_state->ini_def.m2_thresh_low_ext : m2_thresh_low_ext_off;
m1_thresh_ext = is_on ?
ani_state->ini_def.m1_thresh_ext : m1_thresh_ext_off;
m2_thresh_ext = is_on ?
ani_state->ini_def.m2_thresh_ext : m2_thresh_ext_off;
OS_REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
AR_PHY_SFCORR_LOW_M1_THRESH_LOW, m1_thresh_low);
OS_REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
AR_PHY_SFCORR_LOW_M2_THRESH_LOW, m2_thresh_low);
OS_REG_RMW_FIELD(ah, AR_PHY_SFCORR, AR_PHY_SFCORR_M1_THRESH,
m1_thresh);
OS_REG_RMW_FIELD(ah, AR_PHY_SFCORR, AR_PHY_SFCORR_M2_THRESH,
m2_thresh);
OS_REG_RMW_FIELD(ah, AR_PHY_SFCORR, AR_PHY_SFCORR_M2COUNT_THR,
m2_count_thr);
OS_REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW, m2_count_thr_low);
OS_REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
AR_PHY_SFCORR_EXT_M1_THRESH_LOW, m1_thresh_low_ext);
OS_REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
AR_PHY_SFCORR_EXT_M2_THRESH_LOW, m2_thresh_low_ext);
OS_REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT, AR_PHY_SFCORR_EXT_M1_THRESH,
m1_thresh_ext);
OS_REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT, AR_PHY_SFCORR_EXT_M2_THRESH,
m2_thresh_ext);
skip_ws_det:
if (is_on) {
OS_REG_SET_BIT(ah, AR_PHY_SFCORR_LOW,
AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW);
} else {
OS_REG_CLR_BIT(ah, AR_PHY_SFCORR_LOW,
AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW);
}
if (!(is_on != ani_state->ofdm_weak_sig_detect_off)) {
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: ** ch %d: ofdm weak signal: %s=>%s\n",
__func__, chan->ic_freq,
!ani_state->ofdm_weak_sig_detect_off ? "on" : "off",
is_on ? "on" : "off");
if (is_on) {
ahp->ah_stats.ast_ani_ofdmon++;
} else {
ahp->ah_stats.ast_ani_ofdmoff++;
}
ani_state->ofdm_weak_sig_detect_off = !is_on;
}
break;
}
case HAL_ANI_FIRSTEP_LEVEL:
if (level >= ARRAY_LENGTH(firstep_table)) {
HALDEBUG(ah, HAL_DEBUG_UNMASKABLE,
"%s: HAL_ANI_FIRSTEP_LEVEL level out of range (%u > %u)\n",
__func__, level, (unsigned) ARRAY_LENGTH(firstep_table));
return AH_FALSE;
}
/*
* make register setting relative to default
* from INI file & cap value
*/
value =
firstep_table[level] -
firstep_table[HAL_ANI_DEF_FIRSTEP_LVL] +
ani_state->ini_def.firstep;
if (value < HAL_SIG_FIRSTEP_SETTING_MIN) {
value = HAL_SIG_FIRSTEP_SETTING_MIN;
}
if (value > HAL_SIG_FIRSTEP_SETTING_MAX) {
value = HAL_SIG_FIRSTEP_SETTING_MAX;
}
OS_REG_RMW_FIELD(ah, AR_PHY_FIND_SIG, AR_PHY_FIND_SIG_FIRSTEP, value);
/*
* we need to set first step low register too
* make register setting relative to default from INI file & cap value
*/
value2 =
firstep_table[level] -
firstep_table[HAL_ANI_DEF_FIRSTEP_LVL] +
ani_state->ini_def.firstep_low;
if (value2 < HAL_SIG_FIRSTEP_SETTING_MIN) {
value2 = HAL_SIG_FIRSTEP_SETTING_MIN;
}
if (value2 > HAL_SIG_FIRSTEP_SETTING_MAX) {
value2 = HAL_SIG_FIRSTEP_SETTING_MAX;
}
OS_REG_RMW_FIELD(ah, AR_PHY_FIND_SIG_LOW,
AR_PHY_FIND_SIG_LOW_FIRSTEP_LOW, value2);
if (level != ani_state->firstep_level) {
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: ** ch %d: level %d=>%d[def:%d] firstep[level]=%d ini=%d\n",
__func__, chan->ic_freq, ani_state->firstep_level, level,
HAL_ANI_DEF_FIRSTEP_LVL, value, ani_state->ini_def.firstep);
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: ** ch %d: level %d=>%d[def:%d] "
"firstep_low[level]=%d ini=%d\n",
__func__, chan->ic_freq, ani_state->firstep_level, level,
HAL_ANI_DEF_FIRSTEP_LVL, value2,
ani_state->ini_def.firstep_low);
if (level > ani_state->firstep_level) {
ahp->ah_stats.ast_ani_stepup++;
} else if (level < ani_state->firstep_level) {
ahp->ah_stats.ast_ani_stepdown++;
}
ani_state->firstep_level = level;
}
break;
case HAL_ANI_SPUR_IMMUNITY_LEVEL:
if (level >= ARRAY_LENGTH(cycpwr_thr1_table)) {
HALDEBUG(ah, HAL_DEBUG_UNMASKABLE,
"%s: HAL_ANI_SPUR_IMMUNITY_LEVEL level "
"out of range (%u > %u)\n",
__func__, level, (unsigned) ARRAY_LENGTH(cycpwr_thr1_table));
return AH_FALSE;
}
/*
* make register setting relative to default from INI file & cap value
*/
value =
cycpwr_thr1_table[level] -
cycpwr_thr1_table[HAL_ANI_DEF_SPUR_IMMUNE_LVL] +
ani_state->ini_def.cycpwr_thr1;
if (value < HAL_SIG_SPUR_IMM_SETTING_MIN) {
value = HAL_SIG_SPUR_IMM_SETTING_MIN;
}
if (value > HAL_SIG_SPUR_IMM_SETTING_MAX) {
value = HAL_SIG_SPUR_IMM_SETTING_MAX;
}
OS_REG_RMW_FIELD(ah, AR_PHY_TIMING5, AR_PHY_TIMING5_CYCPWR_THR1, value);
/*
* set AR_PHY_EXT_CCA for extension channel
* make register setting relative to default from INI file & cap value
*/
value2 =
cycpwr_thr1_table[level] -
cycpwr_thr1_table[HAL_ANI_DEF_SPUR_IMMUNE_LVL] +
ani_state->ini_def.cycpwr_thr1_ext;
if (value2 < HAL_SIG_SPUR_IMM_SETTING_MIN) {
value2 = HAL_SIG_SPUR_IMM_SETTING_MIN;
}
if (value2 > HAL_SIG_SPUR_IMM_SETTING_MAX) {
value2 = HAL_SIG_SPUR_IMM_SETTING_MAX;
}
OS_REG_RMW_FIELD(ah, AR_PHY_EXT_CCA, AR_PHY_EXT_CYCPWR_THR1, value2);
if (level != ani_state->spur_immunity_level) {
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: ** ch %d: level %d=>%d[def:%d] "
"cycpwr_thr1[level]=%d ini=%d\n",
__func__, chan->ic_freq, ani_state->spur_immunity_level, level,
HAL_ANI_DEF_SPUR_IMMUNE_LVL, value,
ani_state->ini_def.cycpwr_thr1);
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: ** ch %d: level %d=>%d[def:%d] "
"cycpwr_thr1_ext[level]=%d ini=%d\n",
__func__, chan->ic_freq, ani_state->spur_immunity_level, level,
HAL_ANI_DEF_SPUR_IMMUNE_LVL, value2,
ani_state->ini_def.cycpwr_thr1_ext);
if (level > ani_state->spur_immunity_level) {
ahp->ah_stats.ast_ani_spurup++;
} else if (level < ani_state->spur_immunity_level) {
ahp->ah_stats.ast_ani_spurdown++;
}
ani_state->spur_immunity_level = level;
}
break;
case HAL_ANI_MRC_CCK:
/*
* is_on == 1 means MRC CCK ON (default, less noise imm)
* is_on == 0 means MRC CCK is OFF (more noise imm)
*/
is_on = param ? 1 : 0;
if (!AR_SREV_POSEIDON(ah)) {
OS_REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,
AR_PHY_MRC_CCK_ENABLE, is_on);
OS_REG_RMW_FIELD(ah, AR_PHY_MRC_CCK_CTRL,
AR_PHY_MRC_CCK_MUX_REG, is_on);
}
if (!(is_on != ani_state->mrc_cck_off)) {
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: ** ch %d: MRC CCK: %s=>%s\n", __func__, chan->ic_freq,
!ani_state->mrc_cck_off ? "on" : "off", is_on ? "on" : "off");
if (is_on) {
ahp->ah_stats.ast_ani_ccklow++;
} else {
ahp->ah_stats.ast_ani_cckhigh++;
}
ani_state->mrc_cck_off = !is_on;
}
break;
case HAL_ANI_PRESENT:
break;
#ifdef AH_PRIVATE_DIAG
case HAL_ANI_MODE:
if (param == 0) {
ahp->ah_proc_phy_err &= ~HAL_PROCESS_ANI;
/* Turn off HW counters if we have them */
ar9300_ani_detach(ah);
if (AH_PRIVATE(ah)->ah_curchan == NULL) {
return AH_TRUE;
}
/* if we're turning off ANI, reset regs back to INI settings */
if (ah->ah_config.ath_hal_enable_ani) {
HAL_ANI_CMD savefunc = ahp->ah_ani_function;
/* temporarly allow all functions so we can reset */
ahp->ah_ani_function = HAL_ANI_ALL;
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: disable all ANI functions\n", __func__);
ar9300_ani_set_odfm_noise_immunity_level(
ah, HAL_ANI_OFDM_DEF_LEVEL);
ar9300_ani_set_cck_noise_immunity_level(
ah, HAL_ANI_CCK_DEF_LEVEL);
ahp->ah_ani_function = savefunc;
}
} else { /* normal/auto mode */
HALDEBUG(ah, HAL_DEBUG_ANI, "%s: enabled\n", __func__);
ahp->ah_proc_phy_err |= HAL_PROCESS_ANI;
if (AH_PRIVATE(ah)->ah_curchan == NULL) {
return AH_TRUE;
}
ar9300_enable_mib_counters(ah);
ar9300_ani_reset(ah, AH_FALSE);
ani_state = ahp->ah_curani;
}
HALDEBUG(ah, HAL_DEBUG_ANI, "5 ANC: ahp->ah_proc_phy_err %x \n",
ahp->ah_proc_phy_err);
break;
case HAL_ANI_PHYERR_RESET:
ahp->ah_stats.ast_ani_ofdmerrs = 0;
ahp->ah_stats.ast_ani_cckerrs = 0;
break;
#endif /* AH_PRIVATE_DIAG */
default:
#if HAL_ANI_DEBUG
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: invalid cmd 0x%02x (allowed=0x%02x)\n",
__func__, cmd, ahp->ah_ani_function);
#endif
return AH_FALSE;
}
#if HAL_ANI_DEBUG
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: ANI parameters: SI=%d, ofdm_ws=%s FS=%d MRCcck=%s listen_time=%d "
"CC=%d listen=%d ofdm_errs=%d cck_errs=%d\n",
__func__, ani_state->spur_immunity_level,
!ani_state->ofdm_weak_sig_detect_off ? "on" : "off",
ani_state->firstep_level, !ani_state->mrc_cck_off ? "on" : "off",
ani_state->listen_time, ani_state->cycle_count,
ani_state->listen_time, ani_state->ofdm_phy_err_count,
ani_state->cck_phy_err_count);
#endif
#ifndef REMOVE_PKT_LOG
/* do pktlog */
{
struct log_ani log_data;
/* Populate the ani log record */
log_data.phy_stats_disable = DO_ANI(ah);
log_data.noise_immun_lvl = ani_state->ofdm_noise_immunity_level;
log_data.spur_immun_lvl = ani_state->spur_immunity_level;
log_data.ofdm_weak_det = ani_state->ofdm_weak_sig_detect_off;
log_data.cck_weak_thr = ani_state->cck_noise_immunity_level;
log_data.fir_lvl = ani_state->firstep_level;
log_data.listen_time = ani_state->listen_time;
log_data.cycle_count = ani_state->cycle_count;
/* express ofdm_phy_err_count as errors/second */
log_data.ofdm_phy_err_count = ani_state->listen_time ?
ani_state->ofdm_phy_err_count * 1000 / ani_state->listen_time : 0;
/* express cck_phy_err_count as errors/second */
log_data.cck_phy_err_count = ani_state->listen_time ?
ani_state->cck_phy_err_count * 1000 / ani_state->listen_time : 0;
log_data.rssi = ani_state->rssi;
/* clear interrupt context flag */
ath_hal_log_ani(AH_PRIVATE(ah)->ah_sc, &log_data, 0);
}
#endif
return AH_TRUE;
}
/*
* Return an approximation of the time spent ``listening'' by
* deducting the cycles spent tx'ing and rx'ing from the total
* cycle count since our last call. A return value <0 indicates
* an invalid/inconsistent time.
*/
static int32_t
ar9300_ani_get_listen_time(struct ath_hal *ah, HAL_ANISTATS *ani_stats)
{
struct ath_hal_9300 *ahp = AH9300(ah);
struct ar9300_ani_state *ani_state;
u_int32_t tx_frame_count, rx_frame_count, cycle_count;
int32_t listen_time;
tx_frame_count = OS_REG_READ(ah, AR_TFCNT);
rx_frame_count = OS_REG_READ(ah, AR_RFCNT);
cycle_count = OS_REG_READ(ah, AR_CCCNT);
ani_state = ahp->ah_curani;
#if ATH_SUPPORT_VOW_DCS
if (ani_state->cycle_count == 0 || ani_state->cycle_count > cycle_count ||
ani_state->tx_frame_count > tx_frame_count ||
ani_state->rx_frame_count > rx_frame_count) {
#else
if (ani_state->cycle_count == 0 || ani_state->cycle_count > cycle_count) {
#endif
/*
* Cycle counter wrap (or initial call); it's not possible
* to accurately calculate a value because the registers
* right shift rather than wrap--so punt and return 0.
*/
listen_time = 0;
ahp->ah_stats.ast_ani_lzero++;
#if HAL_ANI_DEBUG
HDPRINTF(ah, HAL_DBG_ANI,
"%s: 1st call: ani_state->cycle_count=%d\n",
__func__, ani_state->cycle_count);
#endif
} else {
int32_t ccdelta = cycle_count - ani_state->cycle_count;
int32_t rfdelta = rx_frame_count - ani_state->rx_frame_count;
int32_t tfdelta = tx_frame_count - ani_state->tx_frame_count;
listen_time = (ccdelta - rfdelta - tfdelta) / CLOCK_RATE(ah);
#if ATH_SUPPORT_VOW_DCS
ani_stats->cyclecnt_diff = ccdelta;
ani_stats->txframecnt_diff = tfdelta;
ani_stats->rxframecnt_diff = rfdelta;
ani_stats->valid = AH_TRUE;
#endif
#if HAL_ANI_DEBUG
HDPRINTF(ah, HAL_DBG_ANI,
"%s: cyclecount=%d, rfcount=%d, tfcount=%d, listen_time=%d "
"CLOCK_RATE=%d\n",
__func__, ccdelta, rfdelta, tfdelta, listen_time, CLOCK_RATE(ah));
#endif
}
#if ATH_SUPPORT_VOW_DCS
ani_stats->rxclr_cnt = OS_REG_READ(ah, AR_RCCNT);
#endif
ani_state->cycle_count = cycle_count;
ani_state->tx_frame_count = tx_frame_count;
ani_state->rx_frame_count = rx_frame_count;
return listen_time;
}
/*
* Do periodic processing. This routine is called from a timer
*/
void
ar9300_ani_ar_poll(struct ath_hal *ah, const HAL_NODE_STATS *stats,
HAL_CHANNEL *chan, HAL_ANISTATS *ani_stats)
{
struct ath_hal_9300 *ahp = AH9300(ah);
struct ar9300_ani_state *ani_state;
int32_t listen_time;
u_int32_t ofdm_phy_err_rate, cck_phy_err_rate;
u_int32_t ofdm_phy_err_cnt, cck_phy_err_cnt;
bool old_phy_noise_spur;
ani_state = ahp->ah_curani;
ahp->ah_stats.ast_nodestats = *stats; /* XXX optimize? */
if (ani_state == NULL) {
/* should not happen */
HDPRINTF(ah, HAL_DBG_UNMASKABLE,
"%s: can't poll - no ANI not initialized for this channel\n",
__func__);
#if ATH_SUPPORT_VOW_DCS
ani_stats->valid = false;
#endif
return;
}
/*
* ar9300_ani_ar_poll is never called while scanning but we may have been
* scanning and now just restarted polling. In this case we need to
* restore historical values.
*/
if (ani_state->must_restore) {
HDPRINTF(ah, HAL_DBG_ANI,
"%s: must restore - calling ar9300_ani_restart\n", __func__);
ar9300_ani_reset(ah, false);
#if ATH_SUPPORT_VOW_DCS
ani_stats->valid = false;
#endif
return;
}
listen_time = ar9300_ani_get_listen_time(ah, ani_stats);
if (listen_time <= 0) {
ahp->ah_stats.ast_ani_lneg++;
/* restart ANI period if listen_time is invalid */
HDPRINTF(ah, HAL_DBG_ANI,
"%s: listen_time=%d - calling ar9300_ani_restart\n",
__func__, listen_time);
ar9300_ani_restart(ah);
#if ATH_SUPPORT_VOW_DCS
ani_stats->valid = false;
#endif
return;
}
/* XXX beware of overflow? */
ani_state->listen_time += listen_time;
/* Clear the mib counters and save them in the stats */
ar9300_update_mib_mac_stats(ah);
/* NB: these are not reset-on-read */
ofdm_phy_err_cnt = OS_REG_READ(ah, AR_PHY_ERR_1);
cck_phy_err_cnt = OS_REG_READ(ah, AR_PHY_ERR_2);
#if ATH_SUPPORT_VOW_DCS
ani_stats->listen_time = ani_state->listen_time;
ani_stats->ofdmphyerr_cnt = ofdm_phy_err_cnt;
ani_stats->cckphyerr_cnt = cck_phy_err_cnt;
ani_stats->ofdmphyerrcnt_diff = ( ani_state->ofdm_phy_err_count <= ofdm_phy_err_cnt )?
( ofdm_phy_err_cnt - ani_state->ofdm_phy_err_count ) : ofdm_phy_err_cnt ;
#endif
/* NB: only use ast_ani_*errs with AH_PRIVATE_DIAG */
ahp->ah_stats.ast_ani_ofdmerrs +=
ofdm_phy_err_cnt - ani_state->ofdm_phy_err_count;
ani_state->ofdm_phy_err_count = ofdm_phy_err_cnt;
ahp->ah_stats.ast_ani_cckerrs +=
cck_phy_err_cnt - ani_state->cck_phy_err_count;
ani_state->cck_phy_err_count = cck_phy_err_cnt;
#if HAL_ANI_DEBUG
HDPRINTF(ah, HAL_DBG_ANI,
"%s: Errors: OFDM=0x%08x-0x0=%d CCK=0x%08x-0x0=%d\n",
__func__, ofdm_phy_err_cnt, ofdm_phy_err_cnt,
cck_phy_err_cnt, cck_phy_err_cnt);
#endif
/*
* If ani is not enabled, return after we've collected
* statistics
*/
if (!DO_ANI(ah)) {
return;
}
ofdm_phy_err_rate =
ani_state->ofdm_phy_err_count * 1000 / ani_state->listen_time;
cck_phy_err_rate =
ani_state->cck_phy_err_count * 1000 / ani_state->listen_time;
HDPRINTF(ah, HAL_DBG_ANI,
"%s: listen_time=%d OFDM:%d errs=%d/s CCK:%d errs=%d/s ofdm_turn=%d\n",
__func__, listen_time,
ani_state->ofdm_noise_immunity_level, ofdm_phy_err_rate,
ani_state->cck_noise_immunity_level, cck_phy_err_rate,
ani_state->ofdms_turn);
if (ani_state->listen_time >= HAL_NOISE_DETECT_PERIOD) {
old_phy_noise_spur = ani_state->phy_noise_spur;
if (ofdm_phy_err_rate <= ani_state->ofdm_trig_low &&
cck_phy_err_rate <= ani_state->cck_trig_low) {
if (ani_state->listen_time >= HAL_NOISE_RECOVER_PERIOD) {
ani_state->phy_noise_spur = 0;
}
} else {
ani_state->phy_noise_spur = 1;
}
if (old_phy_noise_spur != ani_state->phy_noise_spur) {
HDPRINTF(ah, HAL_DBG_ANI,
"%s: enviroment change from %d to %d\n",
__func__, old_phy_noise_spur, ani_state->phy_noise_spur);
}
}
if (ani_state->listen_time > 5 * ahp->ah_ani_period) {
/*
* Check to see if need to lower immunity if
* 5 ani_periods have passed
*/
if (ofdm_phy_err_rate <= ani_state->ofdm_trig_low &&
cck_phy_err_rate <= ani_state->cck_trig_low)
{
HDPRINTF(ah, HAL_DBG_ANI,
"%s: 1. listen_time=%d OFDM:%d errs=%d/s(<%d) "
"CCK:%d errs=%d/s(<%d) -> ar9300_ani_lower_immunity\n",
__func__, ani_state->listen_time,
ani_state->ofdm_noise_immunity_level, ofdm_phy_err_rate,
ani_state->ofdm_trig_low, ani_state->cck_noise_immunity_level,
cck_phy_err_rate, ani_state->cck_trig_low);
ar9300_ani_lower_immunity(ah);
ani_state->ofdms_turn = !ani_state->ofdms_turn;
}
HDPRINTF(ah, HAL_DBG_ANI,
"%s: 1 listen_time=%d ofdm=%d/s cck=%d/s - "
"calling ar9300_ani_restart\n",
__func__, ani_state->listen_time,
ofdm_phy_err_rate, cck_phy_err_rate);
ar9300_ani_restart(ah);
} else if (ani_state->listen_time > ahp->ah_ani_period) {
/* check to see if need to raise immunity */
if (ofdm_phy_err_rate > ani_state->ofdm_trig_high &&
(cck_phy_err_rate <= ani_state->cck_trig_high ||
ani_state->ofdms_turn))
{
HDPRINTF(ah, HAL_DBG_ANI,
"%s: 2 listen_time=%d OFDM:%d errs=%d/s(>%d) -> "
"ar9300_ani_ofdm_err_trigger\n",
__func__, ani_state->listen_time,
ani_state->ofdm_noise_immunity_level, ofdm_phy_err_rate,
ani_state->ofdm_trig_high);
ar9300_ani_ofdm_err_trigger(ah);
ar9300_ani_restart(ah);
ani_state->ofdms_turn = false;
} else if (cck_phy_err_rate > ani_state->cck_trig_high) {
HDPRINTF(ah, HAL_DBG_ANI,
"%s: 3 listen_time=%d CCK:%d errs=%d/s(>%d) -> "
"ar9300_ani_cck_err_trigger\n",
__func__, ani_state->listen_time,
ani_state->cck_noise_immunity_level, cck_phy_err_rate,
ani_state->cck_trig_high);
ar9300_ani_cck_err_trigger(ah);
ar9300_ani_restart(ah);
ani_state->ofdms_turn = true;
}
}
}
/*
* The poll function above calculates short noise spurs, caused by non-80211
* devices, based on OFDM/CCK Phy errs.
* If the noise is short enough, we don't want our ratectrl Algo to stop probing
* higher rates, due to bad PER.
*/
bool
ar9300_is_ani_noise_spur(struct ath_hal *ah)
{
struct ath_hal_9300 *ahp = AH9300(ah);
struct ar9300_ani_state *ani_state;
ani_state = ahp->ah_curani;
return ani_state->phy_noise_spur;
}
