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ath9k_hw: sanitize noise floor values properly on all chips

Browse Source 
This refactors the noise floor range checks to make them generic,
and adds proper ranges for each supported chip type.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2010-07-02 00:09:50 +02:00 committed by John W. Linville
parent ba17bc5e55
commit f2552e2837
8 changed files with 119 additions and 94 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/net/wireless/ath/ath9k/ar5008_phy.c
View File

@ -1676,6 +1676,15 @@ static void ar5008_hw_ani_cache_ini_regs(struct ath_hw *ah)
aniState->cycleCount = 0;
}
static void ar5008_hw_set_nf_limits(struct ath_hw *ah)
{
ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_5416_2GHZ;
ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_5416_2GHZ;
ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_5416_2GHZ;
ah->nf_5g.max = AR_PHY_CCA_MAX_GOOD_VAL_5416_5GHZ;
ah->nf_5g.min = AR_PHY_CCA_MIN_GOOD_VAL_5416_5GHZ;
ah->nf_5g.nominal = AR_PHY_CCA_NOM_VAL_5416_5GHZ;
}
void ar5008_hw_attach_phy_ops(struct ath_hw *ah)
{
@ -1713,4 +1722,6 @@ void ar5008_hw_attach_phy_ops(struct ath_hw *ah)
priv_ops->compute_pll_control = ar9160_hw_compute_pll_control;
else
priv_ops->compute_pll_control = ar5008_hw_compute_pll_control;
ar5008_hw_set_nf_limits(ah);
}

32
drivers/net/wireless/ath/ath9k/ar9002_phy.c
View File

@ -481,9 +481,6 @@ static void ar9002_hw_do_getnf(struct ath_hw *ah,
ath_print(common, ATH_DBG_CALIBRATE,
"NF calibrated [ctl] [chain 0] is %d\n", nf);
if (AR_SREV_9271(ah) && (nf >= -114))
nf = -116;
nfarray[0] = nf;
if (!AR_SREV_9285(ah) && !AR_SREV_9271(ah)) {
@ -503,9 +500,6 @@ static void ar9002_hw_do_getnf(struct ath_hw *ah,
ath_print(common, ATH_DBG_CALIBRATE,
"NF calibrated [ext] [chain 0] is %d\n", nf);
if (AR_SREV_9271(ah) && (nf >= -114))
nf = -116;
nfarray[3] = nf;
if (!AR_SREV_9285(ah) && !AR_SREV_9271(ah)) {
@ -520,6 +514,30 @@ static void ar9002_hw_do_getnf(struct ath_hw *ah,
}
}
static void ar9002_hw_set_nf_limits(struct ath_hw *ah)
{
if (AR_SREV_9285(ah)) {
ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9285_2GHZ;
ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9285_2GHZ;
ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9285_2GHZ;
} else if (AR_SREV_9287(ah)) {
ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9287_2GHZ;
ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9287_2GHZ;
ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9287_2GHZ;
} else if (AR_SREV_9271(ah)) {
ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9271_2GHZ;
ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9271_2GHZ;
ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9271_2GHZ;
} else {
ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9280_2GHZ;
ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9280_2GHZ;
ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9280_2GHZ;
ah->nf_5g.max = AR_PHY_CCA_MAX_GOOD_VAL_9280_5GHZ;
ah->nf_5g.min = AR_PHY_CCA_MIN_GOOD_VAL_9280_5GHZ;
ah->nf_5g.nominal = AR_PHY_CCA_NOM_VAL_9280_5GHZ;
}
}
void ar9002_hw_attach_phy_ops(struct ath_hw *ah)
{
struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
@ -532,4 +550,6 @@ void ar9002_hw_attach_phy_ops(struct ath_hw *ah)
priv_ops->olc_init = ar9002_olc_init;
priv_ops->compute_pll_control = ar9002_hw_compute_pll_control;
priv_ops->do_getnf = ar9002_hw_do_getnf;
ar9002_hw_set_nf_limits(ah);
}

26
drivers/net/wireless/ath/ath9k/ar9002_phy.h
View File

@ -576,4 +576,30 @@
#define AR_PHY_CH2_EXT_MINCCA_PWR 0xFF800000
#define AR_PHY_CH2_EXT_MINCCA_PWR_S 23
#define AR_PHY_CCA_NOM_VAL_5416_2GHZ -90
#define AR_PHY_CCA_NOM_VAL_5416_5GHZ -100
#define AR_PHY_CCA_MIN_GOOD_VAL_5416_2GHZ -100
#define AR_PHY_CCA_MIN_GOOD_VAL_5416_5GHZ -110
#define AR_PHY_CCA_MAX_GOOD_VAL_5416_2GHZ -80
#define AR_PHY_CCA_MAX_GOOD_VAL_5416_5GHZ -90
#define AR_PHY_CCA_NOM_VAL_9280_2GHZ -112
#define AR_PHY_CCA_NOM_VAL_9280_5GHZ -112
#define AR_PHY_CCA_MIN_GOOD_VAL_9280_2GHZ -127
#define AR_PHY_CCA_MIN_GOOD_VAL_9280_5GHZ -122
#define AR_PHY_CCA_MAX_GOOD_VAL_9280_2GHZ -97
#define AR_PHY_CCA_MAX_GOOD_VAL_9280_5GHZ -102
#define AR_PHY_CCA_NOM_VAL_9285_2GHZ -118
#define AR_PHY_CCA_MIN_GOOD_VAL_9285_2GHZ -127
#define AR_PHY_CCA_MAX_GOOD_VAL_9285_2GHZ -108
#define AR_PHY_CCA_NOM_VAL_9271_2GHZ -118
#define AR_PHY_CCA_MIN_GOOD_VAL_9271_2GHZ -127
#define AR_PHY_CCA_MAX_GOOD_VAL_9271_2GHZ -116
#define AR_PHY_CCA_NOM_VAL_9287_2GHZ -120
#define AR_PHY_CCA_MIN_GOOD_VAL_9287_2GHZ -127
#define AR_PHY_CCA_MAX_GOOD_VAL_9287_2GHZ -110
#endif

66
drivers/net/wireless/ath/ath9k/ar9003_phy.c
View File

@ -1015,52 +1015,6 @@ static bool ar9003_hw_ani_control(struct ath_hw *ah,
return true;
}
static void ar9003_hw_nf_sanitize_2g(struct ath_hw *ah, s16 *nf)
{
struct ath_common *common = ath9k_hw_common(ah);
if (*nf > ah->nf_2g_max) {
ath_print(common, ATH_DBG_CALIBRATE,
"2 GHz NF (%d) > MAX (%d), "
"correcting to MAX",
*nf, ah->nf_2g_max);
*nf = ah->nf_2g_max;
} else if (*nf < ah->nf_2g_min) {
ath_print(common, ATH_DBG_CALIBRATE,
"2 GHz NF (%d) < MIN (%d), "
"correcting to MIN",
*nf, ah->nf_2g_min);
*nf = ah->nf_2g_min;
}
}
static void ar9003_hw_nf_sanitize_5g(struct ath_hw *ah, s16 *nf)
{
struct ath_common *common = ath9k_hw_common(ah);
if (*nf > ah->nf_5g_max) {
ath_print(common, ATH_DBG_CALIBRATE,
"5 GHz NF (%d) > MAX (%d), "
"correcting to MAX",
*nf, ah->nf_5g_max);
*nf = ah->nf_5g_max;
} else if (*nf < ah->nf_5g_min) {
ath_print(common, ATH_DBG_CALIBRATE,
"5 GHz NF (%d) < MIN (%d), "
"correcting to MIN",
*nf, ah->nf_5g_min);
*nf = ah->nf_5g_min;
}
}
static void ar9003_hw_nf_sanitize(struct ath_hw *ah, s16 *nf)
{
if (IS_CHAN_2GHZ(ah->curchan))
ar9003_hw_nf_sanitize_2g(ah, nf);
else
ar9003_hw_nf_sanitize_5g(ah, nf);
}
static void ar9003_hw_do_getnf(struct ath_hw *ah,
int16_t nfarray[NUM_NF_READINGS])
{
@ -1070,7 +1024,6 @@ static void ar9003_hw_do_getnf(struct ath_hw *ah,
nf = MS(REG_READ(ah, AR_PHY_CCA_0), AR_PHY_MINCCA_PWR);
if (nf & 0x100)
nf = 0 - ((nf ^ 0x1ff) + 1);
ar9003_hw_nf_sanitize(ah, &nf);
ath_print(common, ATH_DBG_CALIBRATE,
"NF calibrated [ctl] [chain 0] is %d\n", nf);
nfarray[0] = nf;
@ -1078,7 +1031,6 @@ static void ar9003_hw_do_getnf(struct ath_hw *ah,
nf = MS(REG_READ(ah, AR_PHY_CCA_1), AR_PHY_CH1_MINCCA_PWR);
if (nf & 0x100)
nf = 0 - ((nf ^ 0x1ff) + 1);
ar9003_hw_nf_sanitize(ah, &nf);
ath_print(common, ATH_DBG_CALIBRATE,
"NF calibrated [ctl] [chain 1] is %d\n", nf);
nfarray[1] = nf;
@ -1086,7 +1038,6 @@ static void ar9003_hw_do_getnf(struct ath_hw *ah,
nf = MS(REG_READ(ah, AR_PHY_CCA_2), AR_PHY_CH2_MINCCA_PWR);
if (nf & 0x100)
nf = 0 - ((nf ^ 0x1ff) + 1);
ar9003_hw_nf_sanitize(ah, &nf);
ath_print(common, ATH_DBG_CALIBRATE,
"NF calibrated [ctl] [chain 2] is %d\n", nf);
nfarray[2] = nf;
@ -1094,7 +1045,6 @@ static void ar9003_hw_do_getnf(struct ath_hw *ah,
nf = MS(REG_READ(ah, AR_PHY_EXT_CCA), AR_PHY_EXT_MINCCA_PWR);
if (nf & 0x100)
nf = 0 - ((nf ^ 0x1ff) + 1);
ar9003_hw_nf_sanitize(ah, &nf);
ath_print(common, ATH_DBG_CALIBRATE,
"NF calibrated [ext] [chain 0] is %d\n", nf);
nfarray[3] = nf;
@ -1102,7 +1052,6 @@ static void ar9003_hw_do_getnf(struct ath_hw *ah,
nf = MS(REG_READ(ah, AR_PHY_EXT_CCA_1), AR_PHY_CH1_EXT_MINCCA_PWR);
if (nf & 0x100)
nf = 0 - ((nf ^ 0x1ff) + 1);
ar9003_hw_nf_sanitize(ah, &nf);
ath_print(common, ATH_DBG_CALIBRATE,
"NF calibrated [ext] [chain 1] is %d\n", nf);
nfarray[4] = nf;
@ -1110,18 +1059,19 @@ static void ar9003_hw_do_getnf(struct ath_hw *ah,
nf = MS(REG_READ(ah, AR_PHY_EXT_CCA_2), AR_PHY_CH2_EXT_MINCCA_PWR);
if (nf & 0x100)
nf = 0 - ((nf ^ 0x1ff) + 1);
ar9003_hw_nf_sanitize(ah, &nf);
ath_print(common, ATH_DBG_CALIBRATE,
"NF calibrated [ext] [chain 2] is %d\n", nf);
nfarray[5] = nf;
}
void ar9003_hw_set_nf_limits(struct ath_hw *ah)
static void ar9003_hw_set_nf_limits(struct ath_hw *ah)
{
ah->nf_2g_max = AR_PHY_CCA_MAX_GOOD_VAL_9300_2GHZ;
ah->nf_2g_min = AR_PHY_CCA_MIN_GOOD_VAL_9300_2GHZ;
ah->nf_5g_max = AR_PHY_CCA_MAX_GOOD_VAL_9300_5GHZ;
ah->nf_5g_min = AR_PHY_CCA_MIN_GOOD_VAL_9300_5GHZ;
ah->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_2GHZ;
ah->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9300_2GHZ;
ah->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9300_2GHZ;
ah->nf_5g.max = AR_PHY_CCA_MAX_GOOD_VAL_9300_5GHZ;
ah->nf_5g.min = AR_PHY_CCA_MIN_GOOD_VAL_9300_5GHZ;
ah->nf_5g.nominal = AR_PHY_CCA_NOM_VAL_9300_5GHZ;
}
/*
@ -1309,6 +1259,8 @@ void ar9003_hw_attach_phy_ops(struct ath_hw *ah)
priv_ops->do_getnf = ar9003_hw_do_getnf;
priv_ops->loadnf = ar9003_hw_loadnf;
priv_ops->ani_cache_ini_regs = ar9003_hw_ani_cache_ini_regs;
ar9003_hw_set_nf_limits(ah);
}
void ar9003_hw_bb_watchdog_config(struct ath_hw *ah)

55
drivers/net/wireless/ath/ath9k/calib.c
View File

@ -74,13 +74,8 @@ static void ath9k_hw_update_nfcal_hist_buffer(struct ath9k_nfcal_hist *h,
h[i].currIndex = 0;
if (h[i].invalidNFcount > 0) {
if (nfarray[i] < AR_PHY_CCA_MIN_BAD_VALUE ||
nfarray[i] > AR_PHY_CCA_MAX_HIGH_VALUE) {
h[i].invalidNFcount = ATH9K_NF_CAL_HIST_MAX;
} else {
h[i].invalidNFcount--;
h[i].privNF = nfarray[i];
}
h[i].invalidNFcount--;
h[i].privNF = nfarray[i];
} else {
h[i].privNF =
ath9k_hw_get_nf_hist_mid(h[i].nfCalBuffer);
@ -172,6 +167,35 @@ void ath9k_hw_start_nfcal(struct ath_hw *ah)
REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF);
}
static void ath9k_hw_nf_sanitize(struct ath_hw *ah, s16 *nf)
{
struct ath_common *common = ath9k_hw_common(ah);
struct ath_nf_limits *limit;
int i;
if (IS_CHAN_2GHZ(ah->curchan))
limit = &ah->nf_2g;
else
limit = &ah->nf_5g;
for (i = 0; i < NUM_NF_READINGS; i++) {
if (!nf[i])
continue;
if (nf[i] > limit->max) {
ath_print(common, ATH_DBG_CALIBRATE,
"NF[%d] (%d) > MAX (%d), correcting to MAX",
i, nf[i], limit->max);
nf[i] = limit->max;
} else if (nf[i] < limit->min) {
ath_print(common, ATH_DBG_CALIBRATE,
"NF[%d] (%d) < MIN (%d), correcting to NOM",
i, nf[i], limit->min);
nf[i] = limit->nominal;
}
}
}
int16_t ath9k_hw_getnf(struct ath_hw *ah,
struct ath9k_channel *chan)
{
@ -190,6 +214,7 @@ int16_t ath9k_hw_getnf(struct ath_hw *ah,
return chan->rawNoiseFloor;
} else {
ath9k_hw_do_getnf(ah, nfarray);
ath9k_hw_nf_sanitize(ah, nfarray);
nf = nfarray[0];
if (ath9k_hw_get_nf_thresh(ah, c->band, &nfThresh)
&& nf > nfThresh) {
@ -211,25 +236,21 @@ int16_t ath9k_hw_getnf(struct ath_hw *ah,
void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah)
{
struct ath_nf_limits *limit;
int i, j;
s16 noise_floor;
if (AR_SREV_9280(ah))
noise_floor = AR_PHY_CCA_MAX_AR9280_GOOD_VALUE;
else if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
noise_floor = AR_PHY_CCA_MAX_AR9285_GOOD_VALUE;
else if (AR_SREV_9287(ah))
noise_floor = AR_PHY_CCA_MAX_AR9287_GOOD_VALUE;
if (!ah->curchan || IS_CHAN_2GHZ(ah->curchan))
limit = &ah->nf_2g;
else
noise_floor = AR_PHY_CCA_MAX_AR5416_GOOD_VALUE;
limit = &ah->nf_5g;
for (i = 0; i < NUM_NF_READINGS; i++) {
ah->nfCalHist[i].currIndex = 0;
ah->nfCalHist[i].privNF = noise_floor;
ah->nfCalHist[i].privNF = limit->nominal;
ah->nfCalHist[i].invalidNFcount =
AR_PHY_CCA_FILTERWINDOW_LENGTH;
for (j = 0; j < ATH9K_NF_CAL_HIST_MAX; j++) {
ah->nfCalHist[i].nfCalBuffer[j] = noise_floor;
ah->nfCalHist[i].nfCalBuffer[j] = limit->nominal;
}
}
}

6
drivers/net/wireless/ath/ath9k/calib.h
View File

@ -19,12 +19,6 @@
#include "hw.h"
#define AR_PHY_CCA_MAX_AR5416_GOOD_VALUE -85
#define AR_PHY_CCA_MAX_AR9280_GOOD_VALUE -112
#define AR_PHY_CCA_MAX_AR9285_GOOD_VALUE -118
#define AR_PHY_CCA_MAX_AR9287_GOOD_VALUE -118
#define AR_PHY_CCA_MAX_HIGH_VALUE -62
#define AR_PHY_CCA_MIN_BAD_VALUE -140
#define AR_PHY_CCA_FILTERWINDOW_LENGTH_INIT 3
#define AR_PHY_CCA_FILTERWINDOW_LENGTH 5

3
drivers/net/wireless/ath/ath9k/hw.c
View File

@ -609,9 +609,6 @@ static int __ath9k_hw_init(struct ath_hw *ah)
else
ah->tx_trig_level = (AR_FTRIG_512B >> AR_FTRIG_S);
if (AR_SREV_9300_20_OR_LATER(ah))
ar9003_hw_set_nf_limits(ah);
ath9k_init_nfcal_hist_buffer(ah);
ah->bb_watchdog_timeout_ms = 25;

14
drivers/net/wireless/ath/ath9k/hw.h
View File

@ -630,6 +630,12 @@ struct ath_hw_ops {
void (*ani_monitor)(struct ath_hw *ah, struct ath9k_channel *chan);
};
struct ath_nf_limits {
s16 max;
s16 min;
s16 nominal;
};
struct ath_hw {
struct ieee80211_hw *hw;
struct ath_common common;
@ -651,10 +657,9 @@ struct ath_hw {
bool is_pciexpress;
bool need_an_top2_fixup;
u16 tx_trig_level;
s16 nf_2g_max;
s16 nf_2g_min;
s16 nf_5g_max;
s16 nf_5g_min;
struct ath_nf_limits nf_2g;
struct ath_nf_limits nf_5g;
u16 rfsilent;
u32 rfkill_gpio;
u32 rfkill_polarity;
@ -943,7 +948,6 @@ void ar9002_hw_enable_wep_aggregation(struct ath_hw *ah);
* Code specific to AR9003, we stuff these here to avoid callbacks
* for older families
*/
void ar9003_hw_set_nf_limits(struct ath_hw *ah);
void ar9003_hw_bb_watchdog_config(struct ath_hw *ah);
void ar9003_hw_bb_watchdog_read(struct ath_hw *ah);
void ar9003_hw_bb_watchdog_dbg_info(struct ath_hw *ah);