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104 lines
3.6 KiB
104 lines
3.6 KiB
--- a/drivers/net/wireless/ath/ath5k/ani.c
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+++ b/drivers/net/wireless/ath/ath5k/ani.c
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@@ -355,41 +355,28 @@ ath5k_ani_lower_immunity(struct ath5k_hw
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/**
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- * ath5k_hw_ani_get_listen_time() - Calculate time spent listening
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+ * ath5k_hw_ani_get_listen_time() - Update counters and return listening time
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*
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* Return an approximation of the time spent "listening" in milliseconds (ms)
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- * since the last call of this function by deducting the cycles spent
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- * transmitting and receiving from the total cycle count.
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- * Save profile count values for debugging/statistics and because we might want
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- * to use them later.
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- *
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- * We assume no one else clears these registers!
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+ * since the last call of this function.
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+ * Save a snapshot of the counter values for debugging/statistics.
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*/
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static int
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ath5k_hw_ani_get_listen_time(struct ath5k_hw *ah, struct ath5k_ani_state *as)
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{
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+ struct ath_common *common = ath5k_hw_common(ah);
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int listen;
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- /* freeze */
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- ath5k_hw_reg_write(ah, AR5K_MIBC_FMC, AR5K_MIBC);
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- /* read */
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- as->pfc_cycles = ath5k_hw_reg_read(ah, AR5K_PROFCNT_CYCLE);
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- as->pfc_busy = ath5k_hw_reg_read(ah, AR5K_PROFCNT_RXCLR);
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- as->pfc_tx = ath5k_hw_reg_read(ah, AR5K_PROFCNT_TX);
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- as->pfc_rx = ath5k_hw_reg_read(ah, AR5K_PROFCNT_RX);
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- /* clear */
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- ath5k_hw_reg_write(ah, 0, AR5K_PROFCNT_TX);
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- ath5k_hw_reg_write(ah, 0, AR5K_PROFCNT_RX);
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- ath5k_hw_reg_write(ah, 0, AR5K_PROFCNT_RXCLR);
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- ath5k_hw_reg_write(ah, 0, AR5K_PROFCNT_CYCLE);
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- /* un-freeze */
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- ath5k_hw_reg_write(ah, 0, AR5K_MIBC);
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+ spin_lock_bh(&common->cc_lock);
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- /* TODO: where does 44000 come from? (11g clock rate?) */
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- listen = (as->pfc_cycles - as->pfc_rx - as->pfc_tx) / 44000;
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+ ath_hw_cycle_counters_update(common);
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+ memcpy(&as->last_cc, &common->cc_ani, sizeof(as->last_cc));
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+
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+ /* clears common->cc_ani */
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+ listen = ath_hw_get_listen_time(common);
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+
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+ spin_unlock_bh(&common->cc_lock);
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- if (as->pfc_cycles == 0 || listen < 0)
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- return 0;
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return listen;
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}
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--- a/drivers/net/wireless/ath/ath5k/ani.h
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+++ b/drivers/net/wireless/ath/ath5k/ani.h
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@@ -75,10 +75,7 @@ struct ath5k_ani_state {
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unsigned int cck_errors;
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/* debug/statistics only: numbers from last ANI calibration */
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- unsigned int pfc_tx;
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- unsigned int pfc_rx;
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- unsigned int pfc_busy;
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- unsigned int pfc_cycles;
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+ struct ath_cycle_counters last_cc;
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unsigned int last_listen;
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unsigned int last_ofdm_errors;
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unsigned int last_cck_errors;
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--- a/drivers/net/wireless/ath/ath5k/debug.c
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+++ b/drivers/net/wireless/ath/ath5k/debug.c
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@@ -715,20 +715,21 @@ static ssize_t read_file_ani(struct file
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len += snprintf(buf+len, sizeof(buf)-len,
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"beacon RSSI average:\t%d\n",
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sc->ah->ah_beacon_rssi_avg.avg);
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+
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+#define CC_PRINT(_struct, _field) \
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+ _struct._field, \
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+ _struct.cycles > 0 ? \
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+ _struct._field*100/_struct.cycles : 0
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+
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len += snprintf(buf+len, sizeof(buf)-len, "profcnt tx\t\t%u\t(%d%%)\n",
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- as->pfc_tx,
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- as->pfc_cycles > 0 ?
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- as->pfc_tx*100/as->pfc_cycles : 0);
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+ CC_PRINT(as->last_cc, tx_frame));
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len += snprintf(buf+len, sizeof(buf)-len, "profcnt rx\t\t%u\t(%d%%)\n",
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- as->pfc_rx,
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- as->pfc_cycles > 0 ?
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- as->pfc_rx*100/as->pfc_cycles : 0);
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+ CC_PRINT(as->last_cc, rx_frame));
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len += snprintf(buf+len, sizeof(buf)-len, "profcnt busy\t\t%u\t(%d%%)\n",
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- as->pfc_busy,
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- as->pfc_cycles > 0 ?
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- as->pfc_busy*100/as->pfc_cycles : 0);
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+ CC_PRINT(as->last_cc, rx_busy));
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+#undef CC_PRINT
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len += snprintf(buf+len, sizeof(buf)-len, "profcnt cycles\t\t%u\n",
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- as->pfc_cycles);
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+ as->last_cc.cycles);
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len += snprintf(buf+len, sizeof(buf)-len,
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"listen time\t\t%d\tlast: %d\n",
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as->listen_time, as->last_listen);
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