Bring over the relevant registers to use when implementing the quiet time

portion of 802.11h.

The AR5212 code has been brought over as a reference, it's currently
untested.

Obtained from:	Atheros

sys/dev/ath/ath_hal/ah.h

@@ -735,6 +735,16 @@ typedef struct {
 #define	HAL_PHYERR_PARAM_ENABLE	0x8000	/* Enable/Disable if applicable */
 
 
+/*
+ * Flag for setting QUIET period
+ */
+typedef enum {
+	HAL_QUIET_DISABLE		= 0x0,
+	HAL_QUIET_ENABLE		= 0x1,
+	HAL_QUIET_ADD_CURRENT_TSF	= 0x2,	/* add current TSF to next_start offset */
+	HAL_QUIET_ADD_SWBA_RESP_TIME	= 0x4,	/* add beacon response time to next_start offset */
+} HAL_QUIET_FLAG;
+
 /*
  * Hardware Access Layer (HAL) API.
  *
@@ -909,6 +919,9 @@ struct ath_hal {
 	u_int	  __ahdecl(*ah_getCTSTimeout)(struct ath_hal*);
 	HAL_BOOL  __ahdecl(*ah_setDecompMask)(struct ath_hal*, uint16_t, int);
 	void	  __ahdecl(*ah_setCoverageClass)(struct ath_hal*, uint8_t, int);
+	HAL_STATUS	__ahdecl(*ah_setQuiet)(struct ath_hal *ah, uint32_t period,
+				uint32_t duration, uint32_t nextStart,
+				HAL_QUIET_FLAG flag);
 
 	/* DFS functions */
 	void	  __ahdecl(*ah_enableDfs)(struct ath_hal *ah,

sys/dev/ath/ath_hal/ar5212/ar5212.h

@@ -506,6 +506,8 @@ extern	HAL_BOOL ar5212SetCapability(struct ath_hal *, HAL_CAPABILITY_TYPE,
 extern	HAL_BOOL ar5212GetDiagState(struct ath_hal *ah, int request,
 		const void *args, uint32_t argsize,
 		void **result, uint32_t *resultsize);
+extern	HAL_STATUS ar5212SetQuiet(struct ath_hal *ah, uint32_t period,
+		uint32_t duration, uint32_t nextStart, HAL_QUIET_FLAG flag);
 
 extern	HAL_BOOL ar5212SetPowerMode(struct ath_hal *ah, HAL_POWER_MODE mode,
 		int setChip);

sys/dev/ath/ath_hal/ar5212/ar5212_attach.c

@@ -127,6 +127,7 @@ static const struct ath_hal_private ar5212hal = {{
 	.ah_getCTSTimeout		= ar5212GetCTSTimeout,
 	.ah_setDecompMask               = ar5212SetDecompMask,
 	.ah_setCoverageClass            = ar5212SetCoverageClass,
+	.ah_setQuiet			= ar5212SetQuiet,
 
 	/* DFS Functions */
 	.ah_enableDfs			= ar5212EnableDfs,

sys/dev/ath/ath_hal/ar5212/ar5212_misc.c

@@ -634,6 +634,20 @@ ar5212SetCoverageClass(struct ath_hal *ah, uint8_t coverageclass, int now)
 	}
 }
 
+HAL_STATUS
+ar5212SetQuiet(struct ath_hal *ah, uint32_t period, uint32_t duration,
+    uint32_t nextStart, HAL_QUIET_FLAG flag)
+{
+	OS_REG_WRITE(ah, AR_QUIET2, period | (duration << AR_QUIET2_QUIET_DUR_S));
+	if (flag & HAL_QUIET_ENABLE) {
+		OS_REG_WRITE(ah, AR_QUIET1, nextStart | (1 << 16));
+	}
+	else {
+		OS_REG_WRITE(ah, AR_QUIET1, nextStart);
+	}
+	return HAL_OK;
+}
+
 void
 ar5212SetPCUConfig(struct ath_hal *ah)
 {

sys/dev/ath/ath_hal/ar5212/ar5212reg.h

@@ -300,6 +300,7 @@
 #define AR_QUIET1_NEXT_QUIET    0xffff
 #define AR_QUIET1_QUIET_ENABLE  0x10000 /* Enable Quiet time operation */
 #define AR_QUIET1_QUIET_ACK_CTS_ENABLE  0x20000 /* Do we ack/cts during quiet period */
+#define	AR_QUIET1_QUIET_ACK_CTS_ENABLE_S 17
 
 #define AR_QUIET2   0x8100  /* More Quiet time programming */
 #define AR_QUIET2_QUIET_PER_S   0   /* Periodicity of quiet period (TU) */

sys/dev/ath/ath_hal/ar5416/ar5416.h

@@ -194,6 +194,8 @@ 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);
 extern	void ar5416Set11nRxClear(struct ath_hal *ah, HAL_HT_RXCLEAR rxclear);
+extern	HAL_STATUS ar5416SetQuiet(struct ath_hal *ah, uint32_t period,
+	    uint32_t duration, uint32_t nextStart, HAL_QUIET_FLAG flag);
 extern	HAL_STATUS ar5416GetCapability(struct ath_hal *ah,
 	    HAL_CAPABILITY_TYPE type, uint32_t capability, uint32_t *result);
 extern	HAL_BOOL ar5416GetDiagState(struct ath_hal *ah, int request,

sys/dev/ath/ath_hal/ar5416/ar5416_attach.c

@@ -139,6 +139,7 @@ ar5416InitState(struct ath_hal_5416 *ahp5416, uint16_t devid, HAL_SOFTC sc,
 	ah->ah_setAntennaSwitch		= ar5416SetAntennaSwitch;
 	ah->ah_setDecompMask		= ar5416SetDecompMask;
 	ah->ah_setCoverageClass		= ar5416SetCoverageClass;
+	ah->ah_setQuiet			= ar5416SetQuiet;
 
 	ah->ah_resetKeyCacheEntry	= ar5416ResetKeyCacheEntry;
 	ah->ah_setKeyCacheEntry		= ar5416SetKeyCacheEntry;

sys/dev/ath/ath_hal/ar5416/ar5416_misc.c

@@ -273,6 +273,35 @@ ar5416Set11nRxClear(struct ath_hal *ah, HAL_HT_RXCLEAR rxclear)
     }
 }
 
+/* XXX shouldn't be here! */
+#define	TU_TO_USEC(_tu)		((_tu) << 10)
+
+HAL_STATUS
+ar5416SetQuiet(struct ath_hal *ah, uint32_t period, uint32_t duration,
+    uint32_t nextStart, HAL_QUIET_FLAG flag)
+{
+	uint32_t period_us = TU_TO_USEC(period); /* convert to us unit */
+	uint32_t nextStart_us = TU_TO_USEC(nextStart); /* convert to us unit */
+	if (flag & HAL_QUIET_ENABLE) {
+		if ((!nextStart) || (flag & HAL_QUIET_ADD_CURRENT_TSF)) {
+			/* Add the nextStart offset to the current TSF */
+			nextStart_us += OS_REG_READ(ah, AR_TSF_L32);
+		}
+		if (flag & HAL_QUIET_ADD_SWBA_RESP_TIME) {
+			nextStart_us += ath_hal_sw_beacon_response_time;
+		}
+		OS_REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1);
+		OS_REG_WRITE(ah, AR_QUIET2, SM(duration, AR_QUIET2_QUIET_DUR));
+		OS_REG_WRITE(ah, AR_QUIET_PERIOD, period_us);
+		OS_REG_WRITE(ah, AR_NEXT_QUIET, nextStart_us);
+		OS_REG_SET_BIT(ah, AR_TIMER_MODE, AR_TIMER_MODE_QUIET);
+	} else {
+		OS_REG_CLR_BIT(ah, AR_TIMER_MODE, AR_TIMER_MODE_QUIET);
+	}
+	return HAL_OK;
+}
+#undef	TU_TO_USEC
+
 HAL_STATUS
 ar5416GetCapability(struct ath_hal *ah, HAL_CAPABILITY_TYPE type,
         uint32_t capability, uint32_t *result)