qcacmn: Use only shadow writes for REO remap and WBM HP reg

REO remap register direct writes as part of SAP stop could
result in a NOC error if the UMAC is in low power state.

Fix is to use shadow register writes for REO remap and
WBM HP registers.

Change-Id: Ie515c3d28f4ccdd99a3757808f1ab6c5cf373e3d
CRs-Fixed: 2813105

dp/wifi3.0/dp_ipa.c

@@ -1778,6 +1778,7 @@ QDF_STATUS dp_ipa_enable_pipes(struct cdp_soc_t *soc_hdl, uint8_t pdev_id)
 	return QDF_STATUS_SUCCESS;
 }
 
+#ifdef DEVICE_FORCE_WAKE_ENABLED
 /*
  * dp_ipa_get_tx_comp_pending_check() - Check if tx completions are pending.
  * @soc: DP pdev Context
@@ -1805,6 +1806,7 @@ static bool dp_ipa_get_tx_comp_pending_check(struct dp_soc *soc)
 
 	return (soc->ipa_uc_tx_rsc.alloc_tx_buf_cnt != buf_cnt);
 }
+#endif
 
 QDF_STATUS dp_ipa_disable_pipes(struct cdp_soc_t *soc_hdl, uint8_t pdev_id)
 {
@@ -1819,6 +1821,15 @@ QDF_STATUS dp_ipa_disable_pipes(struct cdp_soc_t *soc_hdl, uint8_t pdev_id)
 		return QDF_STATUS_E_FAILURE;
 	}
 
+	/*
+	 * The tx completions pending check will trigger register read
+	 * for HP and TP of wbm2sw2 ring. There is a possibility for
+	 * these reg read to cause a NOC error if UMAC is in low power
+	 * state. The WAR is to sleep for the drain timeout without checking
+	 * for the pending tx completions. This WAR can be replaced with
+	 * poll logic for HP/TP difference once force wake is in place.
+	 */
+#ifdef DEVICE_FORCE_WAKE_ENABLED
 	while (dp_ipa_get_tx_comp_pending_check(soc)) {
 		qdf_sleep(TX_COMP_DRAIN_WAIT_MS);
 		timeout -= TX_COMP_DRAIN_WAIT_MS;
@@ -1827,6 +1838,9 @@ QDF_STATUS dp_ipa_disable_pipes(struct cdp_soc_t *soc_hdl, uint8_t pdev_id)
 			break;
 		}
 	}
+#else
+	qdf_sleep(timeout);
+#endif
 
 	result = qdf_ipa_wdi_disable_pipes();
 	if (result) {

dp/wifi3.0/dp_ipa.h

@@ -26,7 +26,7 @@
 
 /* Adding delay before disabling ipa pipes if any Tx Completions are pending */
 #define TX_COMP_DRAIN_WAIT_MS	50
-#define TX_COMP_DRAIN_WAIT_TIMEOUT_MS	200
+#define TX_COMP_DRAIN_WAIT_TIMEOUT_MS	100
 
 /**
  * struct dp_ipa_uc_tx_hdr - full tx header registered to IPA hardware

hal/wifi3.0/hal_api.h

@@ -600,6 +600,11 @@ uint32_t hal_read32_mb_cmem(struct hal_soc *hal_soc, uint32_t offset)
 }
 #endif
 
+/* Max times allowed for register writing retry */
+#define HAL_REG_WRITE_RETRY_MAX		5
+/* Delay milliseconds for each time retry */
+#define HAL_REG_WRITE_RETRY_DELAY	1
+
 #ifdef GENERIC_SHADOW_REGISTER_ACCESS_ENABLE
 /* To check shadow config index range between 0..31 */
 #define HAL_SHADOW_REG_INDEX_LOW 32
@@ -682,7 +687,6 @@ static inline QDF_STATUS hal_write32_mb_shadow_confirm(
 	int i;
 	QDF_STATUS ret;
 	uint32_t shadow_reg_offset;
-	uint32_t read_value;
 	int shadow_config_index;
 	bool is_reg_offset_present = false;
 
@@ -705,9 +709,8 @@ static inline QDF_STATUS hal_write32_mb_shadow_confirm(
 	}
 	if (is_reg_offset_present) {
 		ret = hal_poll_dirty_bit_reg(hal, shadow_config_index);
-		read_value = hal_read32_mb(hal, reg_offset);
-		hal_info("Shadow retry:reg 0x%x val 0x%x readval 0x%x ret %d",
-			 reg_offset, value, read_value, ret);
+		hal_info("Shadow write:reg 0x%x val 0x%x ret %d",
+			 reg_offset, value, ret);
 		if (QDF_IS_STATUS_ERROR(ret)) {
 			HAL_STATS_INC(hal, shadow_reg_write_fail, 1);
 			return ret;
@@ -717,23 +720,6 @@ static inline QDF_STATUS hal_write32_mb_shadow_confirm(
 	return ret;
 }
 
-#else /* GENERIC_SHADOW_REGISTER_ACCESS_ENABLE */
-
-static inline QDF_STATUS hal_write32_mb_shadow_confirm(
-	struct hal_soc *hal_soc,
-	uint32_t offset,
-	uint32_t value)
-{
-	return QDF_STATUS_SUCCESS;
-}
-
-#endif /* GENERIC_SHADOW_REGISTER_ACCESS_ENABLE */
-
-/* Max times allowed for register writing retry */
-#define HAL_REG_WRITE_RETRY_MAX		5
-/* Delay milliseconds for each time retry */
-#define HAL_REG_WRITE_RETRY_DELAY	1
-
 /**
  * hal_write32_mb_confirm_retry() - write register with confirming and
 				    do retry/recovery if writing failed
@@ -749,6 +735,19 @@ static inline QDF_STATUS hal_write32_mb_shadow_confirm(
  *
  * Return: None
  */
+static inline void hal_write32_mb_confirm_retry(struct hal_soc *hal_soc,
+						uint32_t offset,
+						uint32_t value,
+						bool recovery)
+{
+	QDF_STATUS ret;
+
+	ret = hal_write32_mb_shadow_confirm(hal_soc, offset, value);
+	if (QDF_IS_STATUS_ERROR(ret) && recovery)
+		qdf_trigger_self_recovery(NULL, QDF_HAL_REG_WRITE_FAILURE);
+}
+#else /* GENERIC_SHADOW_REGISTER_ACCESS_ENABLE */
+
 static inline void hal_write32_mb_confirm_retry(struct hal_soc *hal_soc,
 						uint32_t offset,
 						uint32_t value,
@@ -756,7 +755,6 @@ static inline void hal_write32_mb_confirm_retry(struct hal_soc *hal_soc,
 {
 	uint8_t retry_cnt = 0;
 	uint32_t read_value;
-	QDF_STATUS ret;
 
 	while (retry_cnt <= HAL_REG_WRITE_RETRY_MAX) {
 		hal_write32_mb_confirm(hal_soc, offset, value);
@@ -771,13 +769,10 @@ static inline void hal_write32_mb_confirm_retry(struct hal_soc *hal_soc,
 		retry_cnt++;
 	}
 
-	if (retry_cnt > HAL_REG_WRITE_RETRY_MAX) {
-		ret = hal_write32_mb_shadow_confirm(hal_soc, offset, value);
-		if (QDF_IS_STATUS_ERROR(ret) && recovery)
-			qdf_trigger_self_recovery(
-				NULL, QDF_HAL_REG_WRITE_FAILURE);
-	}
+	if (retry_cnt > HAL_REG_WRITE_RETRY_MAX && recovery)
+		qdf_trigger_self_recovery(NULL, QDF_HAL_REG_WRITE_FAILURE);
 }
+#endif /* GENERIC_SHADOW_REGISTER_ACCESS_ENABLE */
 
 #ifdef FEATURE_HAL_DELAYED_REG_WRITE
 /**