diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/ar9003_phy.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9003_phy.c | 213 |
1 files changed, 24 insertions, 189 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c index 19bc05c41136..7c93338540ae 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c @@ -1015,213 +1015,38 @@ 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]) { - struct ath_common *common = ath9k_hw_common(ah); int16_t nf; 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; + nfarray[0] = sign_extend(nf, 9); 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; + nfarray[1] = sign_extend(nf, 9); 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; + nfarray[2] = sign_extend(nf, 9); 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; + nfarray[3] = sign_extend(nf, 9); 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; + nfarray[4] = sign_extend(nf, 9); 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; + nfarray[5] = sign_extend(nf, 9); } -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; -} - -/* - * Find out which of the RX chains are enabled - */ -static u32 ar9003_hw_get_rx_chainmask(struct ath_hw *ah) -{ - u32 chain = REG_READ(ah, AR_PHY_RX_CHAINMASK); - /* - * The bits [2:0] indicate the rx chain mask and are to be - * interpreted as follows: - * 00x => Only chain 0 is enabled - * 01x => Chain 1 and 0 enabled - * 1xx => Chain 2,1 and 0 enabled - */ - return chain & 0x7; -} - -static void ar9003_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan) -{ - struct ath9k_nfcal_hist *h; - unsigned i, j; - int32_t val; - const u32 ar9300_cca_regs[6] = { - AR_PHY_CCA_0, - AR_PHY_CCA_1, - AR_PHY_CCA_2, - AR_PHY_EXT_CCA, - AR_PHY_EXT_CCA_1, - AR_PHY_EXT_CCA_2, - }; - u8 chainmask, rx_chain_status; - struct ath_common *common = ath9k_hw_common(ah); - - rx_chain_status = ar9003_hw_get_rx_chainmask(ah); - - chainmask = 0x3F; - h = ah->nfCalHist; - - for (i = 0; i < NUM_NF_READINGS; i++) { - if (chainmask & (1 << i)) { - val = REG_READ(ah, ar9300_cca_regs[i]); - val &= 0xFFFFFE00; - val |= (((u32) (h[i].privNF) << 1) & 0x1ff); - REG_WRITE(ah, ar9300_cca_regs[i], val); - } - } - - /* - * Load software filtered NF value into baseband internal minCCApwr - * variable. - */ - REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, - AR_PHY_AGC_CONTROL_ENABLE_NF); - REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, - AR_PHY_AGC_CONTROL_NO_UPDATE_NF); - REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF); - - /* - * Wait for load to complete, should be fast, a few 10s of us. - * The max delay was changed from an original 250us to 10000us - * since 250us often results in NF load timeout and causes deaf - * condition during stress testing 12/12/2009 - */ - for (j = 0; j < 1000; j++) { - if ((REG_READ(ah, AR_PHY_AGC_CONTROL) & - AR_PHY_AGC_CONTROL_NF) == 0) - break; - udelay(10); - } - - /* - * We timed out waiting for the noisefloor to load, probably due to an - * in-progress rx. Simply return here and allow the load plenty of time - * to complete before the next calibration interval. We need to avoid - * trying to load -50 (which happens below) while the previous load is - * still in progress as this can cause rx deafness. Instead by returning - * here, the baseband nf cal will just be capped by our present - * noisefloor until the next calibration timer. - */ - if (j == 1000) { - ath_print(common, ATH_DBG_ANY, "Timeout while waiting for nf " - "to load: AR_PHY_AGC_CONTROL=0x%x\n", - REG_READ(ah, AR_PHY_AGC_CONTROL)); - return; - } - - /* - * Restore maxCCAPower register parameter again so that we're not capped - * by the median we just loaded. This will be initial (and max) value - * of next noise floor calibration the baseband does. - */ - for (i = 0; i < NUM_NF_READINGS; i++) { - if (chainmask & (1 << i)) { - val = REG_READ(ah, ar9300_cca_regs[i]); - val &= 0xFFFFFE00; - val |= (((u32) (-50) << 1) & 0x1ff); - REG_WRITE(ah, ar9300_cca_regs[i], val); - } - } + 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; } /* @@ -1291,6 +1116,14 @@ static void ar9003_hw_ani_cache_ini_regs(struct ath_hw *ah) void ar9003_hw_attach_phy_ops(struct ath_hw *ah) { struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah); + const u32 ar9300_cca_regs[6] = { + AR_PHY_CCA_0, + AR_PHY_CCA_1, + AR_PHY_CCA_2, + AR_PHY_EXT_CCA, + AR_PHY_EXT_CCA_1, + AR_PHY_EXT_CCA_2, + }; priv_ops->rf_set_freq = ar9003_hw_set_channel; priv_ops->spur_mitigate_freq = ar9003_hw_spur_mitigate; @@ -1307,8 +1140,10 @@ void ar9003_hw_attach_phy_ops(struct ath_hw *ah) priv_ops->set_diversity = ar9003_hw_set_diversity; priv_ops->ani_control = ar9003_hw_ani_control; 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); + memcpy(ah->nf_regs, ar9300_cca_regs, sizeof(ah->nf_regs)); } void ar9003_hw_bb_watchdog_config(struct ath_hw *ah) |