Merge branch 'master' into for-linus

Conflicts:
	include/linux/percpu.h
	mm/percpu.c

1 files changed, 59 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/hw.c b/drivers/net/wireless/ath/hw.c
index a8f81ea09f1..183c2828138 100644
--- a/drivers/net/wireless/ath/hw.c
+++ b/drivers/net/wireless/ath/hw.c
@@ -124,3 +124,62 @@ void ath_hw_setbssidmask(struct ath_common *common)
 	REG_WRITE(ah, get_unaligned_le16(common->bssidmask + 4), AR_BSSMSKU);
 }
 EXPORT_SYMBOL(ath_hw_setbssidmask);
+
+
+/**
+ * ath_hw_cycle_counters_update - common function to update cycle counters
+ *
+ * @common: the ath_common struct for the device.
+ *
+ * This function is used to update all cycle counters in one place.
+ * It has to be called while holding common->cc_lock!
+ */
+void ath_hw_cycle_counters_update(struct ath_common *common)
+{
+	u32 cycles, busy, rx, tx;
+	void *ah = common->ah;
+
+	/* freeze */
+	REG_WRITE(ah, AR_MIBC_FMC, AR_MIBC);
+
+	/* read */
+	cycles = REG_READ(ah, AR_CCCNT);
+	busy = REG_READ(ah, AR_RCCNT);
+	rx = REG_READ(ah, AR_RFCNT);
+	tx = REG_READ(ah, AR_TFCNT);
+
+	/* clear */
+	REG_WRITE(ah, 0, AR_CCCNT);
+	REG_WRITE(ah, 0, AR_RFCNT);
+	REG_WRITE(ah, 0, AR_RCCNT);
+	REG_WRITE(ah, 0, AR_TFCNT);
+
+	/* unfreeze */
+	REG_WRITE(ah, 0, AR_MIBC);
+
+	/* update all cycle counters here */
+	common->cc_ani.cycles += cycles;
+	common->cc_ani.rx_busy += busy;
+	common->cc_ani.rx_frame += rx;
+	common->cc_ani.tx_frame += tx;
+
+	common->cc_survey.cycles += cycles;
+	common->cc_survey.rx_busy += busy;
+	common->cc_survey.rx_frame += rx;
+	common->cc_survey.tx_frame += tx;
+}
+EXPORT_SYMBOL(ath_hw_cycle_counters_update);
+
+int32_t ath_hw_get_listen_time(struct ath_common *common)
+{
+	struct ath_cycle_counters *cc = &common->cc_ani;
+	int32_t listen_time;
+
+	listen_time = (cc->cycles - cc->rx_frame - cc->tx_frame) /
+		      (common->clockrate * 1000);
+
+	memset(cc, 0, sizeof(*cc));
+
+	return listen_time;
+}
+EXPORT_SYMBOL(ath_hw_get_listen_time);