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path: root/drivers/net/wireless/ath9k/ani.c
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-rw-r--r--drivers/net/wireless/ath9k/ani.c852
1 files changed, 852 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath9k/ani.c b/drivers/net/wireless/ath9k/ani.c
new file mode 100644
index 000000000000..251e2d9a7a4a
--- /dev/null
+++ b/drivers/net/wireless/ath9k/ani.c
@@ -0,0 +1,852 @@
+/*
+ * Copyright (c) 2008 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "core.h"
+#include "hw.h"
+#include "reg.h"
+#include "phy.h"
+
+static int ath9k_hw_get_ani_channel_idx(struct ath_hal *ah,
+ struct ath9k_channel *chan)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ahp->ah_ani); i++) {
+ if (ahp->ah_ani[i].c.channel == chan->channel)
+ return i;
+ if (ahp->ah_ani[i].c.channel == 0) {
+ ahp->ah_ani[i].c.channel = chan->channel;
+ ahp->ah_ani[i].c.channelFlags = chan->channelFlags;
+ return i;
+ }
+ }
+
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "No more channel states left. Using channel 0\n");
+
+ return 0;
+}
+
+static bool ath9k_hw_ani_control(struct ath_hal *ah,
+ enum ath9k_ani_cmd cmd, int param)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+ struct ar5416AniState *aniState = ahp->ah_curani;
+
+ switch (cmd & ahp->ah_ani_function) {
+ case ATH9K_ANI_NOISE_IMMUNITY_LEVEL:{
+ u32 level = param;
+
+ if (level >= ARRAY_SIZE(ahp->ah_totalSizeDesired)) {
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "level out of range (%u > %u)\n",
+ level,
+ (unsigned)ARRAY_SIZE(ahp->ah_totalSizeDesired));
+ return false;
+ }
+
+ REG_RMW_FIELD(ah, AR_PHY_DESIRED_SZ,
+ AR_PHY_DESIRED_SZ_TOT_DES,
+ ahp->ah_totalSizeDesired[level]);
+ REG_RMW_FIELD(ah, AR_PHY_AGC_CTL1,
+ AR_PHY_AGC_CTL1_COARSE_LOW,
+ ahp->ah_coarseLow[level]);
+ REG_RMW_FIELD(ah, AR_PHY_AGC_CTL1,
+ AR_PHY_AGC_CTL1_COARSE_HIGH,
+ ahp->ah_coarseHigh[level]);
+ REG_RMW_FIELD(ah, AR_PHY_FIND_SIG,
+ AR_PHY_FIND_SIG_FIRPWR,
+ ahp->ah_firpwr[level]);
+
+ if (level > aniState->noiseImmunityLevel)
+ ahp->ah_stats.ast_ani_niup++;
+ else if (level < aniState->noiseImmunityLevel)
+ ahp->ah_stats.ast_ani_nidown++;
+ aniState->noiseImmunityLevel = level;
+ break;
+ }
+ case ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION:{
+ const int m1ThreshLow[] = { 127, 50 };
+ const int m2ThreshLow[] = { 127, 40 };
+ const int m1Thresh[] = { 127, 0x4d };
+ const int m2Thresh[] = { 127, 0x40 };
+ const int m2CountThr[] = { 31, 16 };
+ const int m2CountThrLow[] = { 63, 48 };
+ u32 on = param ? 1 : 0;
+
+ REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
+ AR_PHY_SFCORR_LOW_M1_THRESH_LOW,
+ m1ThreshLow[on]);
+ REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
+ AR_PHY_SFCORR_LOW_M2_THRESH_LOW,
+ m2ThreshLow[on]);
+ REG_RMW_FIELD(ah, AR_PHY_SFCORR,
+ AR_PHY_SFCORR_M1_THRESH,
+ m1Thresh[on]);
+ REG_RMW_FIELD(ah, AR_PHY_SFCORR,
+ AR_PHY_SFCORR_M2_THRESH,
+ m2Thresh[on]);
+ REG_RMW_FIELD(ah, AR_PHY_SFCORR,
+ AR_PHY_SFCORR_M2COUNT_THR,
+ m2CountThr[on]);
+ REG_RMW_FIELD(ah, AR_PHY_SFCORR_LOW,
+ AR_PHY_SFCORR_LOW_M2COUNT_THR_LOW,
+ m2CountThrLow[on]);
+
+ REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
+ AR_PHY_SFCORR_EXT_M1_THRESH_LOW,
+ m1ThreshLow[on]);
+ REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
+ AR_PHY_SFCORR_EXT_M2_THRESH_LOW,
+ m2ThreshLow[on]);
+ REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
+ AR_PHY_SFCORR_EXT_M1_THRESH,
+ m1Thresh[on]);
+ REG_RMW_FIELD(ah, AR_PHY_SFCORR_EXT,
+ AR_PHY_SFCORR_EXT_M2_THRESH,
+ m2Thresh[on]);
+
+ if (on)
+ REG_SET_BIT(ah, AR_PHY_SFCORR_LOW,
+ AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW);
+ else
+ REG_CLR_BIT(ah, AR_PHY_SFCORR_LOW,
+ AR_PHY_SFCORR_LOW_USE_SELF_CORR_LOW);
+
+ if (!on != aniState->ofdmWeakSigDetectOff) {
+ if (on)
+ ahp->ah_stats.ast_ani_ofdmon++;
+ else
+ ahp->ah_stats.ast_ani_ofdmoff++;
+ aniState->ofdmWeakSigDetectOff = !on;
+ }
+ break;
+ }
+ case ATH9K_ANI_CCK_WEAK_SIGNAL_THR:{
+ const int weakSigThrCck[] = { 8, 6 };
+ u32 high = param ? 1 : 0;
+
+ REG_RMW_FIELD(ah, AR_PHY_CCK_DETECT,
+ AR_PHY_CCK_DETECT_WEAK_SIG_THR_CCK,
+ weakSigThrCck[high]);
+ if (high != aniState->cckWeakSigThreshold) {
+ if (high)
+ ahp->ah_stats.ast_ani_cckhigh++;
+ else
+ ahp->ah_stats.ast_ani_ccklow++;
+ aniState->cckWeakSigThreshold = high;
+ }
+ break;
+ }
+ case ATH9K_ANI_FIRSTEP_LEVEL:{
+ const int firstep[] = { 0, 4, 8 };
+ u32 level = param;
+
+ if (level >= ARRAY_SIZE(firstep)) {
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "level out of range (%u > %u)\n",
+ level,
+ (unsigned) ARRAY_SIZE(firstep));
+ return false;
+ }
+ REG_RMW_FIELD(ah, AR_PHY_FIND_SIG,
+ AR_PHY_FIND_SIG_FIRSTEP,
+ firstep[level]);
+ if (level > aniState->firstepLevel)
+ ahp->ah_stats.ast_ani_stepup++;
+ else if (level < aniState->firstepLevel)
+ ahp->ah_stats.ast_ani_stepdown++;
+ aniState->firstepLevel = level;
+ break;
+ }
+ case ATH9K_ANI_SPUR_IMMUNITY_LEVEL:{
+ const int cycpwrThr1[] =
+ { 2, 4, 6, 8, 10, 12, 14, 16 };
+ u32 level = param;
+
+ if (level >= ARRAY_SIZE(cycpwrThr1)) {
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "level out of range (%u > %u)\n",
+ level,
+ (unsigned)
+ ARRAY_SIZE(cycpwrThr1));
+ return false;
+ }
+ REG_RMW_FIELD(ah, AR_PHY_TIMING5,
+ AR_PHY_TIMING5_CYCPWR_THR1,
+ cycpwrThr1[level]);
+ if (level > aniState->spurImmunityLevel)
+ ahp->ah_stats.ast_ani_spurup++;
+ else if (level < aniState->spurImmunityLevel)
+ ahp->ah_stats.ast_ani_spurdown++;
+ aniState->spurImmunityLevel = level;
+ break;
+ }
+ case ATH9K_ANI_PRESENT:
+ break;
+ default:
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "invalid cmd %u\n", cmd);
+ return false;
+ }
+
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI, "ANI parameters:\n");
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "noiseImmunityLevel=%d, spurImmunityLevel=%d, "
+ "ofdmWeakSigDetectOff=%d\n",
+ aniState->noiseImmunityLevel, aniState->spurImmunityLevel,
+ !aniState->ofdmWeakSigDetectOff);
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "cckWeakSigThreshold=%d, "
+ "firstepLevel=%d, listenTime=%d\n",
+ aniState->cckWeakSigThreshold, aniState->firstepLevel,
+ aniState->listenTime);
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "cycleCount=%d, ofdmPhyErrCount=%d, cckPhyErrCount=%d\n\n",
+ aniState->cycleCount, aniState->ofdmPhyErrCount,
+ aniState->cckPhyErrCount);
+
+ return true;
+}
+
+static void ath9k_hw_update_mibstats(struct ath_hal *ah,
+ struct ath9k_mib_stats *stats)
+{
+ stats->ackrcv_bad += REG_READ(ah, AR_ACK_FAIL);
+ stats->rts_bad += REG_READ(ah, AR_RTS_FAIL);
+ stats->fcs_bad += REG_READ(ah, AR_FCS_FAIL);
+ stats->rts_good += REG_READ(ah, AR_RTS_OK);
+ stats->beacons += REG_READ(ah, AR_BEACON_CNT);
+}
+
+static void ath9k_ani_restart(struct ath_hal *ah)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+ struct ar5416AniState *aniState;
+
+ if (!DO_ANI(ah))
+ return;
+
+ aniState = ahp->ah_curani;
+
+ aniState->listenTime = 0;
+ if (ahp->ah_hasHwPhyCounters) {
+ if (aniState->ofdmTrigHigh > AR_PHY_COUNTMAX) {
+ aniState->ofdmPhyErrBase = 0;
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "OFDM Trigger is too high for hw counters\n");
+ } else {
+ aniState->ofdmPhyErrBase =
+ AR_PHY_COUNTMAX - aniState->ofdmTrigHigh;
+ }
+ if (aniState->cckTrigHigh > AR_PHY_COUNTMAX) {
+ aniState->cckPhyErrBase = 0;
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "CCK Trigger is too high for hw counters\n");
+ } else {
+ aniState->cckPhyErrBase =
+ AR_PHY_COUNTMAX - aniState->cckTrigHigh;
+ }
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "Writing ofdmbase=%u cckbase=%u\n",
+ aniState->ofdmPhyErrBase,
+ aniState->cckPhyErrBase);
+ REG_WRITE(ah, AR_PHY_ERR_1, aniState->ofdmPhyErrBase);
+ REG_WRITE(ah, AR_PHY_ERR_2, aniState->cckPhyErrBase);
+ REG_WRITE(ah, AR_PHY_ERR_MASK_1, AR_PHY_ERR_OFDM_TIMING);
+ REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING);
+
+ ath9k_hw_update_mibstats(ah, &ahp->ah_mibStats);
+ }
+ aniState->ofdmPhyErrCount = 0;
+ aniState->cckPhyErrCount = 0;
+}
+
+static void ath9k_hw_ani_ofdm_err_trigger(struct ath_hal *ah)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+ struct ath9k_channel *chan = ah->ah_curchan;
+ struct ar5416AniState *aniState;
+ enum wireless_mode mode;
+ int32_t rssi;
+
+ if (!DO_ANI(ah))
+ return;
+
+ aniState = ahp->ah_curani;
+
+ if (aniState->noiseImmunityLevel < HAL_NOISE_IMMUNE_MAX) {
+ if (ath9k_hw_ani_control(ah, ATH9K_ANI_NOISE_IMMUNITY_LEVEL,
+ aniState->noiseImmunityLevel + 1)) {
+ return;
+ }
+ }
+
+ if (aniState->spurImmunityLevel < HAL_SPUR_IMMUNE_MAX) {
+ if (ath9k_hw_ani_control(ah, ATH9K_ANI_SPUR_IMMUNITY_LEVEL,
+ aniState->spurImmunityLevel + 1)) {
+ return;
+ }
+ }
+
+ if (ah->ah_opmode == NL80211_IFTYPE_AP) {
+ if (aniState->firstepLevel < HAL_FIRST_STEP_MAX) {
+ ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL,
+ aniState->firstepLevel + 1);
+ }
+ return;
+ }
+ rssi = BEACON_RSSI(ahp);
+ if (rssi > aniState->rssiThrHigh) {
+ if (!aniState->ofdmWeakSigDetectOff) {
+ if (ath9k_hw_ani_control(ah,
+ ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
+ false)) {
+ ath9k_hw_ani_control(ah,
+ ATH9K_ANI_SPUR_IMMUNITY_LEVEL, 0);
+ return;
+ }
+ }
+ if (aniState->firstepLevel < HAL_FIRST_STEP_MAX) {
+ ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL,
+ aniState->firstepLevel + 1);
+ return;
+ }
+ } else if (rssi > aniState->rssiThrLow) {
+ if (aniState->ofdmWeakSigDetectOff)
+ ath9k_hw_ani_control(ah,
+ ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
+ true);
+ if (aniState->firstepLevel < HAL_FIRST_STEP_MAX)
+ ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL,
+ aniState->firstepLevel + 1);
+ return;
+ } else {
+ mode = ath9k_hw_chan2wmode(ah, chan);
+ if (mode == ATH9K_MODE_11G || mode == ATH9K_MODE_11B) {
+ if (!aniState->ofdmWeakSigDetectOff)
+ ath9k_hw_ani_control(ah,
+ ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
+ false);
+ if (aniState->firstepLevel > 0)
+ ath9k_hw_ani_control(ah,
+ ATH9K_ANI_FIRSTEP_LEVEL, 0);
+ return;
+ }
+ }
+}
+
+static void ath9k_hw_ani_cck_err_trigger(struct ath_hal *ah)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+ struct ath9k_channel *chan = ah->ah_curchan;
+ struct ar5416AniState *aniState;
+ enum wireless_mode mode;
+ int32_t rssi;
+
+ if (!DO_ANI(ah))
+ return;
+
+ aniState = ahp->ah_curani;
+ if (aniState->noiseImmunityLevel < HAL_NOISE_IMMUNE_MAX) {
+ if (ath9k_hw_ani_control(ah, ATH9K_ANI_NOISE_IMMUNITY_LEVEL,
+ aniState->noiseImmunityLevel + 1)) {
+ return;
+ }
+ }
+ if (ah->ah_opmode == NL80211_IFTYPE_AP) {
+ if (aniState->firstepLevel < HAL_FIRST_STEP_MAX) {
+ ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL,
+ aniState->firstepLevel + 1);
+ }
+ return;
+ }
+ rssi = BEACON_RSSI(ahp);
+ if (rssi > aniState->rssiThrLow) {
+ if (aniState->firstepLevel < HAL_FIRST_STEP_MAX)
+ ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL,
+ aniState->firstepLevel + 1);
+ } else {
+ mode = ath9k_hw_chan2wmode(ah, chan);
+ if (mode == ATH9K_MODE_11G || mode == ATH9K_MODE_11B) {
+ if (aniState->firstepLevel > 0)
+ ath9k_hw_ani_control(ah,
+ ATH9K_ANI_FIRSTEP_LEVEL, 0);
+ }
+ }
+}
+
+static void ath9k_hw_ani_lower_immunity(struct ath_hal *ah)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+ struct ar5416AniState *aniState;
+ int32_t rssi;
+
+ aniState = ahp->ah_curani;
+
+ if (ah->ah_opmode == NL80211_IFTYPE_AP) {
+ if (aniState->firstepLevel > 0) {
+ if (ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL,
+ aniState->firstepLevel - 1))
+ return;
+ }
+ } else {
+ rssi = BEACON_RSSI(ahp);
+ if (rssi > aniState->rssiThrHigh) {
+ /* XXX: Handle me */
+ } else if (rssi > aniState->rssiThrLow) {
+ if (aniState->ofdmWeakSigDetectOff) {
+ if (ath9k_hw_ani_control(ah,
+ ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
+ true) == true)
+ return;
+ }
+ if (aniState->firstepLevel > 0) {
+ if (ath9k_hw_ani_control(ah,
+ ATH9K_ANI_FIRSTEP_LEVEL,
+ aniState->firstepLevel - 1) == true)
+ return;
+ }
+ } else {
+ if (aniState->firstepLevel > 0) {
+ if (ath9k_hw_ani_control(ah,
+ ATH9K_ANI_FIRSTEP_LEVEL,
+ aniState->firstepLevel - 1) == true)
+ return;
+ }
+ }
+ }
+
+ if (aniState->spurImmunityLevel > 0) {
+ if (ath9k_hw_ani_control(ah, ATH9K_ANI_SPUR_IMMUNITY_LEVEL,
+ aniState->spurImmunityLevel - 1))
+ return;
+ }
+
+ if (aniState->noiseImmunityLevel > 0) {
+ ath9k_hw_ani_control(ah, ATH9K_ANI_NOISE_IMMUNITY_LEVEL,
+ aniState->noiseImmunityLevel - 1);
+ return;
+ }
+}
+
+static int32_t ath9k_hw_ani_get_listen_time(struct ath_hal *ah)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+ struct ar5416AniState *aniState;
+ u32 txFrameCount, rxFrameCount, cycleCount;
+ int32_t listenTime;
+
+ txFrameCount = REG_READ(ah, AR_TFCNT);
+ rxFrameCount = REG_READ(ah, AR_RFCNT);
+ cycleCount = REG_READ(ah, AR_CCCNT);
+
+ aniState = ahp->ah_curani;
+ if (aniState->cycleCount == 0 || aniState->cycleCount > cycleCount) {
+
+ listenTime = 0;
+ ahp->ah_stats.ast_ani_lzero++;
+ } else {
+ int32_t ccdelta = cycleCount - aniState->cycleCount;
+ int32_t rfdelta = rxFrameCount - aniState->rxFrameCount;
+ int32_t tfdelta = txFrameCount - aniState->txFrameCount;
+ listenTime = (ccdelta - rfdelta - tfdelta) / 44000;
+ }
+ aniState->cycleCount = cycleCount;
+ aniState->txFrameCount = txFrameCount;
+ aniState->rxFrameCount = rxFrameCount;
+
+ return listenTime;
+}
+
+void ath9k_ani_reset(struct ath_hal *ah)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+ struct ar5416AniState *aniState;
+ struct ath9k_channel *chan = ah->ah_curchan;
+ int index;
+
+ if (!DO_ANI(ah))
+ return;
+
+ index = ath9k_hw_get_ani_channel_idx(ah, chan);
+ aniState = &ahp->ah_ani[index];
+ ahp->ah_curani = aniState;
+
+ if (DO_ANI(ah) && ah->ah_opmode != NL80211_IFTYPE_STATION
+ && ah->ah_opmode != NL80211_IFTYPE_ADHOC) {
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "Reset ANI state opmode %u\n", ah->ah_opmode);
+ ahp->ah_stats.ast_ani_reset++;
+
+ ath9k_hw_ani_control(ah, ATH9K_ANI_NOISE_IMMUNITY_LEVEL, 0);
+ ath9k_hw_ani_control(ah, ATH9K_ANI_SPUR_IMMUNITY_LEVEL, 0);
+ ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL, 0);
+ ath9k_hw_ani_control(ah, ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
+ !ATH9K_ANI_USE_OFDM_WEAK_SIG);
+ ath9k_hw_ani_control(ah, ATH9K_ANI_CCK_WEAK_SIGNAL_THR,
+ ATH9K_ANI_CCK_WEAK_SIG_THR);
+
+ ath9k_hw_setrxfilter(ah, ath9k_hw_getrxfilter(ah) |
+ ATH9K_RX_FILTER_PHYERR);
+
+ if (ah->ah_opmode == NL80211_IFTYPE_AP) {
+ ahp->ah_curani->ofdmTrigHigh =
+ ah->ah_config.ofdm_trig_high;
+ ahp->ah_curani->ofdmTrigLow =
+ ah->ah_config.ofdm_trig_low;
+ ahp->ah_curani->cckTrigHigh =
+ ah->ah_config.cck_trig_high;
+ ahp->ah_curani->cckTrigLow =
+ ah->ah_config.cck_trig_low;
+ }
+ ath9k_ani_restart(ah);
+ return;
+ }
+
+ if (aniState->noiseImmunityLevel != 0)
+ ath9k_hw_ani_control(ah, ATH9K_ANI_NOISE_IMMUNITY_LEVEL,
+ aniState->noiseImmunityLevel);
+ if (aniState->spurImmunityLevel != 0)
+ ath9k_hw_ani_control(ah, ATH9K_ANI_SPUR_IMMUNITY_LEVEL,
+ aniState->spurImmunityLevel);
+ if (aniState->ofdmWeakSigDetectOff)
+ ath9k_hw_ani_control(ah, ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
+ !aniState->ofdmWeakSigDetectOff);
+ if (aniState->cckWeakSigThreshold)
+ ath9k_hw_ani_control(ah, ATH9K_ANI_CCK_WEAK_SIGNAL_THR,
+ aniState->cckWeakSigThreshold);
+ if (aniState->firstepLevel != 0)
+ ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL,
+ aniState->firstepLevel);
+ if (ahp->ah_hasHwPhyCounters) {
+ ath9k_hw_setrxfilter(ah, ath9k_hw_getrxfilter(ah) &
+ ~ATH9K_RX_FILTER_PHYERR);
+ ath9k_ani_restart(ah);
+ REG_WRITE(ah, AR_PHY_ERR_MASK_1, AR_PHY_ERR_OFDM_TIMING);
+ REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING);
+
+ } else {
+ ath9k_ani_restart(ah);
+ ath9k_hw_setrxfilter(ah, ath9k_hw_getrxfilter(ah) |
+ ATH9K_RX_FILTER_PHYERR);
+ }
+}
+
+void ath9k_hw_ani_monitor(struct ath_hal *ah,
+ const struct ath9k_node_stats *stats,
+ struct ath9k_channel *chan)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+ struct ar5416AniState *aniState;
+ int32_t listenTime;
+
+ aniState = ahp->ah_curani;
+ ahp->ah_stats.ast_nodestats = *stats;
+
+ listenTime = ath9k_hw_ani_get_listen_time(ah);
+ if (listenTime < 0) {
+ ahp->ah_stats.ast_ani_lneg++;
+ ath9k_ani_restart(ah);
+ return;
+ }
+
+ aniState->listenTime += listenTime;
+
+ if (ahp->ah_hasHwPhyCounters) {
+ u32 phyCnt1, phyCnt2;
+ u32 ofdmPhyErrCnt, cckPhyErrCnt;
+
+ ath9k_hw_update_mibstats(ah, &ahp->ah_mibStats);
+
+ phyCnt1 = REG_READ(ah, AR_PHY_ERR_1);
+ phyCnt2 = REG_READ(ah, AR_PHY_ERR_2);
+
+ if (phyCnt1 < aniState->ofdmPhyErrBase ||
+ phyCnt2 < aniState->cckPhyErrBase) {
+ if (phyCnt1 < aniState->ofdmPhyErrBase) {
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "phyCnt1 0x%x, resetting "
+ "counter value to 0x%x\n",
+ phyCnt1,
+ aniState->ofdmPhyErrBase);
+ REG_WRITE(ah, AR_PHY_ERR_1,
+ aniState->ofdmPhyErrBase);
+ REG_WRITE(ah, AR_PHY_ERR_MASK_1,
+ AR_PHY_ERR_OFDM_TIMING);
+ }
+ if (phyCnt2 < aniState->cckPhyErrBase) {
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "phyCnt2 0x%x, resetting "
+ "counter value to 0x%x\n",
+ phyCnt2,
+ aniState->cckPhyErrBase);
+ REG_WRITE(ah, AR_PHY_ERR_2,
+ aniState->cckPhyErrBase);
+ REG_WRITE(ah, AR_PHY_ERR_MASK_2,
+ AR_PHY_ERR_CCK_TIMING);
+ }
+ return;
+ }
+
+ ofdmPhyErrCnt = phyCnt1 - aniState->ofdmPhyErrBase;
+ ahp->ah_stats.ast_ani_ofdmerrs +=
+ ofdmPhyErrCnt - aniState->ofdmPhyErrCount;
+ aniState->ofdmPhyErrCount = ofdmPhyErrCnt;
+
+ cckPhyErrCnt = phyCnt2 - aniState->cckPhyErrBase;
+ ahp->ah_stats.ast_ani_cckerrs +=
+ cckPhyErrCnt - aniState->cckPhyErrCount;
+ aniState->cckPhyErrCount = cckPhyErrCnt;
+ }
+
+ if (!DO_ANI(ah))
+ return;
+
+ if (aniState->listenTime > 5 * ahp->ah_aniPeriod) {
+ if (aniState->ofdmPhyErrCount <= aniState->listenTime *
+ aniState->ofdmTrigLow / 1000 &&
+ aniState->cckPhyErrCount <= aniState->listenTime *
+ aniState->cckTrigLow / 1000)
+ ath9k_hw_ani_lower_immunity(ah);
+ ath9k_ani_restart(ah);
+ } else if (aniState->listenTime > ahp->ah_aniPeriod) {
+ if (aniState->ofdmPhyErrCount > aniState->listenTime *
+ aniState->ofdmTrigHigh / 1000) {
+ ath9k_hw_ani_ofdm_err_trigger(ah);
+ ath9k_ani_restart(ah);
+ } else if (aniState->cckPhyErrCount >
+ aniState->listenTime * aniState->cckTrigHigh /
+ 1000) {
+ ath9k_hw_ani_cck_err_trigger(ah);
+ ath9k_ani_restart(ah);
+ }
+ }
+}
+
+bool ath9k_hw_phycounters(struct ath_hal *ah)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+
+ return ahp->ah_hasHwPhyCounters ? true : false;
+}
+
+void ath9k_enable_mib_counters(struct ath_hal *ah)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI, "Enable MIB counters\n");
+
+ ath9k_hw_update_mibstats(ah, &ahp->ah_mibStats);
+
+ REG_WRITE(ah, AR_FILT_OFDM, 0);
+ REG_WRITE(ah, AR_FILT_CCK, 0);
+ REG_WRITE(ah, AR_MIBC,
+ ~(AR_MIBC_COW | AR_MIBC_FMC | AR_MIBC_CMC | AR_MIBC_MCS)
+ & 0x0f);
+ REG_WRITE(ah, AR_PHY_ERR_MASK_1, AR_PHY_ERR_OFDM_TIMING);
+ REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING);
+}
+
+void ath9k_hw_disable_mib_counters(struct ath_hal *ah)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI, "Disable MIB counters\n");
+
+ REG_WRITE(ah, AR_MIBC, AR_MIBC_FMC | AR_MIBC_CMC);
+
+ ath9k_hw_update_mibstats(ah, &ahp->ah_mibStats);
+
+ REG_WRITE(ah, AR_FILT_OFDM, 0);
+ REG_WRITE(ah, AR_FILT_CCK, 0);
+}
+
+u32 ath9k_hw_GetMibCycleCountsPct(struct ath_hal *ah,
+ u32 *rxc_pcnt,
+ u32 *rxf_pcnt,
+ u32 *txf_pcnt)
+{
+ static u32 cycles, rx_clear, rx_frame, tx_frame;
+ u32 good = 1;
+
+ u32 rc = REG_READ(ah, AR_RCCNT);
+ u32 rf = REG_READ(ah, AR_RFCNT);
+ u32 tf = REG_READ(ah, AR_TFCNT);
+ u32 cc = REG_READ(ah, AR_CCCNT);
+
+ if (cycles == 0 || cycles > cc) {
+ DPRINTF(ah->ah_sc, ATH_DBG_CHANNEL,
+ "cycle counter wrap. ExtBusy = 0\n");
+ good = 0;
+ } else {
+ u32 cc_d = cc - cycles;
+ u32 rc_d = rc - rx_clear;
+ u32 rf_d = rf - rx_frame;
+ u32 tf_d = tf - tx_frame;
+
+ if (cc_d != 0) {
+ *rxc_pcnt = rc_d * 100 / cc_d;
+ *rxf_pcnt = rf_d * 100 / cc_d;
+ *txf_pcnt = tf_d * 100 / cc_d;
+ } else {
+ good = 0;
+ }
+ }
+
+ cycles = cc;
+ rx_frame = rf;
+ rx_clear = rc;
+ tx_frame = tf;
+
+ return good;
+}
+
+/*
+ * Process a MIB interrupt. We may potentially be invoked because
+ * any of the MIB counters overflow/trigger so don't assume we're
+ * here because a PHY error counter triggered.
+ */
+void ath9k_hw_procmibevent(struct ath_hal *ah,
+ const struct ath9k_node_stats *stats)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+ u32 phyCnt1, phyCnt2;
+
+ /* Reset these counters regardless */
+ REG_WRITE(ah, AR_FILT_OFDM, 0);
+ REG_WRITE(ah, AR_FILT_CCK, 0);
+ if (!(REG_READ(ah, AR_SLP_MIB_CTRL) & AR_SLP_MIB_PENDING))
+ REG_WRITE(ah, AR_SLP_MIB_CTRL, AR_SLP_MIB_CLEAR);
+
+ /* Clear the mib counters and save them in the stats */
+ ath9k_hw_update_mibstats(ah, &ahp->ah_mibStats);
+ ahp->ah_stats.ast_nodestats = *stats;
+
+ if (!DO_ANI(ah))
+ return;
+
+ /* NB: these are not reset-on-read */
+ phyCnt1 = REG_READ(ah, AR_PHY_ERR_1);
+ phyCnt2 = REG_READ(ah, AR_PHY_ERR_2);
+ if (((phyCnt1 & AR_MIBCNT_INTRMASK) == AR_MIBCNT_INTRMASK) ||
+ ((phyCnt2 & AR_MIBCNT_INTRMASK) == AR_MIBCNT_INTRMASK)) {
+ struct ar5416AniState *aniState = ahp->ah_curani;
+ u32 ofdmPhyErrCnt, cckPhyErrCnt;
+
+ /* NB: only use ast_ani_*errs with AH_PRIVATE_DIAG */
+ ofdmPhyErrCnt = phyCnt1 - aniState->ofdmPhyErrBase;
+ ahp->ah_stats.ast_ani_ofdmerrs +=
+ ofdmPhyErrCnt - aniState->ofdmPhyErrCount;
+ aniState->ofdmPhyErrCount = ofdmPhyErrCnt;
+
+ cckPhyErrCnt = phyCnt2 - aniState->cckPhyErrBase;
+ ahp->ah_stats.ast_ani_cckerrs +=
+ cckPhyErrCnt - aniState->cckPhyErrCount;
+ aniState->cckPhyErrCount = cckPhyErrCnt;
+
+ /*
+ * NB: figure out which counter triggered. If both
+ * trigger we'll only deal with one as the processing
+ * clobbers the error counter so the trigger threshold
+ * check will never be true.
+ */
+ if (aniState->ofdmPhyErrCount > aniState->ofdmTrigHigh)
+ ath9k_hw_ani_ofdm_err_trigger(ah);
+ if (aniState->cckPhyErrCount > aniState->cckTrigHigh)
+ ath9k_hw_ani_cck_err_trigger(ah);
+ /* NB: always restart to insure the h/w counters are reset */
+ ath9k_ani_restart(ah);
+ }
+}
+
+void ath9k_hw_ani_setup(struct ath_hal *ah)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+ int i;
+
+ const int totalSizeDesired[] = { -55, -55, -55, -55, -62 };
+ const int coarseHigh[] = { -14, -14, -14, -14, -12 };
+ const int coarseLow[] = { -64, -64, -64, -64, -70 };
+ const int firpwr[] = { -78, -78, -78, -78, -80 };
+
+ for (i = 0; i < 5; i++) {
+ ahp->ah_totalSizeDesired[i] = totalSizeDesired[i];
+ ahp->ah_coarseHigh[i] = coarseHigh[i];
+ ahp->ah_coarseLow[i] = coarseLow[i];
+ ahp->ah_firpwr[i] = firpwr[i];
+ }
+}
+
+void ath9k_hw_ani_attach(struct ath_hal *ah)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+ int i;
+
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI, "Attach ANI\n");
+
+ ahp->ah_hasHwPhyCounters = 1;
+
+ memset(ahp->ah_ani, 0, sizeof(ahp->ah_ani));
+ for (i = 0; i < ARRAY_SIZE(ahp->ah_ani); i++) {
+ ahp->ah_ani[i].ofdmTrigHigh = ATH9K_ANI_OFDM_TRIG_HIGH;
+ ahp->ah_ani[i].ofdmTrigLow = ATH9K_ANI_OFDM_TRIG_LOW;
+ ahp->ah_ani[i].cckTrigHigh = ATH9K_ANI_CCK_TRIG_HIGH;
+ ahp->ah_ani[i].cckTrigLow = ATH9K_ANI_CCK_TRIG_LOW;
+ ahp->ah_ani[i].rssiThrHigh = ATH9K_ANI_RSSI_THR_HIGH;
+ ahp->ah_ani[i].rssiThrLow = ATH9K_ANI_RSSI_THR_LOW;
+ ahp->ah_ani[i].ofdmWeakSigDetectOff =
+ !ATH9K_ANI_USE_OFDM_WEAK_SIG;
+ ahp->ah_ani[i].cckWeakSigThreshold =
+ ATH9K_ANI_CCK_WEAK_SIG_THR;
+ ahp->ah_ani[i].spurImmunityLevel = ATH9K_ANI_SPUR_IMMUNE_LVL;
+ ahp->ah_ani[i].firstepLevel = ATH9K_ANI_FIRSTEP_LVL;
+ if (ahp->ah_hasHwPhyCounters) {
+ ahp->ah_ani[i].ofdmPhyErrBase =
+ AR_PHY_COUNTMAX - ATH9K_ANI_OFDM_TRIG_HIGH;
+ ahp->ah_ani[i].cckPhyErrBase =
+ AR_PHY_COUNTMAX - ATH9K_ANI_CCK_TRIG_HIGH;
+ }
+ }
+ if (ahp->ah_hasHwPhyCounters) {
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI,
+ "Setting OfdmErrBase = 0x%08x\n",
+ ahp->ah_ani[0].ofdmPhyErrBase);
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI, "Setting cckErrBase = 0x%08x\n",
+ ahp->ah_ani[0].cckPhyErrBase);
+
+ REG_WRITE(ah, AR_PHY_ERR_1, ahp->ah_ani[0].ofdmPhyErrBase);
+ REG_WRITE(ah, AR_PHY_ERR_2, ahp->ah_ani[0].cckPhyErrBase);
+ ath9k_enable_mib_counters(ah);
+ }
+ ahp->ah_aniPeriod = ATH9K_ANI_PERIOD;
+ if (ah->ah_config.enable_ani)
+ ahp->ah_procPhyErr |= HAL_PROCESS_ANI;
+}
+
+void ath9k_hw_ani_detach(struct ath_hal *ah)
+{
+ struct ath_hal_5416 *ahp = AH5416(ah);
+
+ DPRINTF(ah->ah_sc, ATH_DBG_ANI, "Detach ANI\n");
+
+ if (ahp->ah_hasHwPhyCounters) {
+ ath9k_hw_disable_mib_counters(ah);
+ REG_WRITE(ah, AR_PHY_ERR_1, 0);
+ REG_WRITE(ah, AR_PHY_ERR_2, 0);
+ }
+}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.