diff options
Diffstat (limited to 'package/mac80211/patches/523-ath5k_use_common_counters.patch')
| -rw-r--r-- | package/mac80211/patches/523-ath5k_use_common_counters.patch | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/package/mac80211/patches/523-ath5k_use_common_counters.patch b/package/mac80211/patches/523-ath5k_use_common_counters.patch new file mode 100644 index 0000000000..1899f8d465 --- /dev/null +++ b/package/mac80211/patches/523-ath5k_use_common_counters.patch @@ -0,0 +1,104 @@ +--- a/drivers/net/wireless/ath/ath5k/ani.c ++++ b/drivers/net/wireless/ath/ath5k/ani.c +@@ -355,41 +355,28 @@ ath5k_ani_lower_immunity(struct ath5k_hw + + + /** +- * ath5k_hw_ani_get_listen_time() - Calculate time spent listening ++ * ath5k_hw_ani_get_listen_time() - Update counters and return listening time + * + * Return an approximation of the time spent "listening" in milliseconds (ms) +- * since the last call of this function by deducting the cycles spent +- * transmitting and receiving from the total cycle count. +- * Save profile count values for debugging/statistics and because we might want +- * to use them later. +- * +- * We assume no one else clears these registers! ++ * since the last call of this function. ++ * Save a snapshot of the counter values for debugging/statistics. + */ + static int + ath5k_hw_ani_get_listen_time(struct ath5k_hw *ah, struct ath5k_ani_state *as) + { ++ struct ath_common *common = ath5k_hw_common(ah); + int listen; + +- /* freeze */ +- ath5k_hw_reg_write(ah, AR5K_MIBC_FMC, AR5K_MIBC); +- /* read */ +- as->pfc_cycles = ath5k_hw_reg_read(ah, AR5K_PROFCNT_CYCLE); +- as->pfc_busy = ath5k_hw_reg_read(ah, AR5K_PROFCNT_RXCLR); +- as->pfc_tx = ath5k_hw_reg_read(ah, AR5K_PROFCNT_TX); +- as->pfc_rx = ath5k_hw_reg_read(ah, AR5K_PROFCNT_RX); +- /* clear */ +- ath5k_hw_reg_write(ah, 0, AR5K_PROFCNT_TX); +- ath5k_hw_reg_write(ah, 0, AR5K_PROFCNT_RX); +- ath5k_hw_reg_write(ah, 0, AR5K_PROFCNT_RXCLR); +- ath5k_hw_reg_write(ah, 0, AR5K_PROFCNT_CYCLE); +- /* un-freeze */ +- ath5k_hw_reg_write(ah, 0, AR5K_MIBC); ++ spin_lock_bh(&common->cc_lock); + +- /* TODO: where does 44000 come from? (11g clock rate?) */ +- listen = (as->pfc_cycles - as->pfc_rx - as->pfc_tx) / 44000; ++ ath_hw_cycle_counters_update(common); ++ memcpy(&as->last_cc, &common->cc_ani, sizeof(as->last_cc)); ++ ++ /* clears common->cc_ani */ ++ listen = ath_hw_get_listen_time(common); ++ ++ spin_unlock_bh(&common->cc_lock); + +- if (as->pfc_cycles == 0 || listen < 0) +- return 0; + return listen; + } + +--- a/drivers/net/wireless/ath/ath5k/ani.h ++++ b/drivers/net/wireless/ath/ath5k/ani.h +@@ -75,10 +75,7 @@ struct ath5k_ani_state { + unsigned int cck_errors; + + /* debug/statistics only: numbers from last ANI calibration */ +- unsigned int pfc_tx; +- unsigned int pfc_rx; +- unsigned int pfc_busy; +- unsigned int pfc_cycles; ++ struct ath_cycle_counters last_cc; + unsigned int last_listen; + unsigned int last_ofdm_errors; + unsigned int last_cck_errors; +--- a/drivers/net/wireless/ath/ath5k/debug.c ++++ b/drivers/net/wireless/ath/ath5k/debug.c +@@ -715,20 +715,21 @@ static ssize_t read_file_ani(struct file + len += snprintf(buf+len, sizeof(buf)-len, + "beacon RSSI average:\t%d\n", + sc->ah->ah_beacon_rssi_avg.avg); ++ ++#define CC_PRINT(_struct, _field) \ ++ _struct._field, \ ++ _struct.cycles > 0 ? \ ++ _struct._field*100/_struct.cycles : 0 ++ + len += snprintf(buf+len, sizeof(buf)-len, "profcnt tx\t\t%u\t(%d%%)\n", +- as->pfc_tx, +- as->pfc_cycles > 0 ? +- as->pfc_tx*100/as->pfc_cycles : 0); ++ CC_PRINT(as->last_cc, tx_frame)); + len += snprintf(buf+len, sizeof(buf)-len, "profcnt rx\t\t%u\t(%d%%)\n", +- as->pfc_rx, +- as->pfc_cycles > 0 ? +- as->pfc_rx*100/as->pfc_cycles : 0); ++ CC_PRINT(as->last_cc, rx_frame)); + len += snprintf(buf+len, sizeof(buf)-len, "profcnt busy\t\t%u\t(%d%%)\n", +- as->pfc_busy, +- as->pfc_cycles > 0 ? +- as->pfc_busy*100/as->pfc_cycles : 0); ++ CC_PRINT(as->last_cc, rx_busy)); ++#undef CC_PRINT + len += snprintf(buf+len, sizeof(buf)-len, "profcnt cycles\t\t%u\n", +- as->pfc_cycles); ++ as->last_cc.cycles); + len += snprintf(buf+len, sizeof(buf)-len, + "listen time\t\t%d\tlast: %d\n", + as->listen_time, as->last_listen); |