diff --git a/sys/dev/ath/ath_hal/ah.h b/sys/dev/ath/ath_hal/ah.h
index 1919c0f1eee7..45a74f59ad6a 100644
--- a/sys/dev/ath/ath_hal/ah.h
+++ b/sys/dev/ath/ath_hal/ah.h
@@ -1025,6 +1025,9 @@ struct ath_hal {
 	    			struct ath_desc *);
 	void	  __ahdecl(*ah_set11nBurstDuration)(struct ath_hal *,
 	    			struct ath_desc *, u_int);
+	uint32_t  __ahdecl(*ah_get_mib_cycle_counts_pct) (struct ath_hal *,
+				uint32_t *, uint32_t *, uint32_t *, uint32_t *);
+
 	uint32_t  __ahdecl(*ah_get11nExtBusy)(struct ath_hal *);
 	void      __ahdecl(*ah_set11nMac2040)(struct ath_hal *,
 				HAL_HT_MACMODE);
diff --git a/sys/dev/ath/ath_hal/ar5416/ar5416.h b/sys/dev/ath/ath_hal/ar5416/ar5416.h
index 35d9a4d61722..5006c313e7ee 100644
--- a/sys/dev/ath/ath_hal/ar5416/ar5416.h
+++ b/sys/dev/ath/ath_hal/ar5416/ar5416.h
@@ -112,11 +112,13 @@ struct ath_hal_5416 {
 	int		ah_hangs;		/* h/w hangs state */
 	uint8_t		ah_keytype[AR5416_KEYTABLE_SIZE];
 	/*
-	 * Extension Channel Rx Clear State
+	 * Primary/Extension Channel Tx, Rx, Rx Clear State
 	 */
 	uint32_t	ah_cycleCount;
 	uint32_t	ah_ctlBusy;
 	uint32_t	ah_extBusy;
+	uint32_t	ah_rxBusy;
+	uint32_t	ah_txBusy;
 	uint32_t	ah_rx_chainmask;
 	uint32_t	ah_tx_chainmask;
 
@@ -194,6 +196,9 @@ extern	uint32_t ar5416GetCurRssi(struct ath_hal *ah);
 extern	HAL_BOOL ar5416SetAntennaSwitch(struct ath_hal *, HAL_ANT_SETTING);
 extern	HAL_BOOL ar5416SetDecompMask(struct ath_hal *, uint16_t, int);
 extern	void ar5416SetCoverageClass(struct ath_hal *, uint8_t, int);
+extern	uint32_t ar5416GetMibCycleCountsPct(struct ath_hal *ah,
+    uint32_t *rxc_pcnt, uint32_t *rxextc_pcnt, uint32_t *rxf_pcnt,
+    uint32_t *txf_pcnt);
 extern	uint32_t ar5416Get11nExtBusy(struct ath_hal *ah);
 extern	void ar5416Set11nMac2040(struct ath_hal *ah, HAL_HT_MACMODE mode);
 extern	HAL_HT_RXCLEAR ar5416Get11nRxClear(struct ath_hal *ah);
diff --git a/sys/dev/ath/ath_hal/ar5416/ar5416_misc.c b/sys/dev/ath/ath_hal/ar5416/ar5416_misc.c
index 880900f98915..b1c1b9842219 100644
--- a/sys/dev/ath/ath_hal/ar5416/ar5416_misc.c
+++ b/sys/dev/ath/ath_hal/ar5416/ar5416_misc.c
@@ -171,6 +171,57 @@ ar5416SetCoverageClass(struct ath_hal *ah, uint8_t coverageclass, int now)
 	AH_PRIVATE(ah)->ah_coverageClass = coverageclass;
 }
 
+/*
+ * Return the busy for rx_frame, rx_clear, and tx_frame
+ */
+uint32_t
+ar5416GetMibCycleCountsPct(struct ath_hal *ah, uint32_t *rxc_pcnt,
+    uint32_t *extc_pcnt, uint32_t *rxf_pcnt, uint32_t *txf_pcnt)
+{
+	struct ath_hal_5416 *ahp = AH5416(ah);
+	u_int32_t good = 1;
+
+	/* XXX freeze/unfreeze mib counters */
+	uint32_t rc = OS_REG_READ(ah, AR_RCCNT);
+	uint32_t ec = OS_REG_READ(ah, AR_EXTRCCNT);
+	uint32_t rf = OS_REG_READ(ah, AR_RFCNT);
+	uint32_t tf = OS_REG_READ(ah, AR_TFCNT);
+	uint32_t cc = OS_REG_READ(ah, AR_CCCNT); /* read cycles last */
+
+	if (ahp->ah_cycleCount == 0 || ahp->ah_cycleCount > cc) {
+		/*
+		 * Cycle counter wrap (or initial call); it's not possible
+		 * to accurately calculate a value because the registers
+		 * right shift rather than wrap--so punt and return 0.
+		 */
+		HALDEBUG(ah, HAL_DEBUG_ANY,
+			    "%s: cycle counter wrap. ExtBusy = 0\n", __func__);
+			good = 0;
+	} else {
+		uint32_t cc_d = cc - ahp->ah_cycleCount;
+		uint32_t rc_d = rc - ahp->ah_ctlBusy;
+		uint32_t ec_d = ec - ahp->ah_extBusy;
+		uint32_t rf_d = rf - ahp->ah_rxBusy;
+		uint32_t tf_d = tf - ahp->ah_txBusy;
+
+		if (cc_d != 0) {
+			*rxc_pcnt = rc_d * 100 / cc_d;
+			*rxf_pcnt = rf_d * 100 / cc_d;
+			*txf_pcnt = tf_d * 100 / cc_d;
+			*extc_pcnt = ec_d * 100 / cc_d;
+		} else {
+			good = 0;
+		}
+	}
+	ahp->ah_cycleCount = cc;
+	ahp->ah_rxBusy = rf;
+	ahp->ah_ctlBusy = rc;
+	ahp->ah_txBusy = tf;
+	ahp->ah_extBusy = ec;
+
+	return good;
+}
+
 /*
  * Return approximation of extension channel busy over an time interval
  * 0% (clear) -> 100% (busy)