qcacmn: Flush REO descriptors entirely

To avoid race conditions where BA window size can change, always
flush entire REO descriptor from HW cache irrespective of current
BA window size.

Change-Id: I608996722e7dc2dc6acfd145b8c190b58ce09822
CRs-Fixed: 2251811

hal/wifi3.0/hal_hw_headers.h

@@ -76,6 +76,7 @@
 
 #define HAL_SRNG_REO_EXCEPTION HAL_SRNG_REO2SW1
 #define HAL_SRNG_REO_ALTERNATE_SELECT 0x7
+#define HAL_NON_QOS_TID 16
 
 /* calculate the register address offset from bar0 of shadow register x */
 #ifdef QCA_WIFI_QCA6390
@@ -320,13 +321,24 @@ static inline void hal_set_link_desc_addr(void *desc, uint32_t cookie,
  *
  * @hal_soc: Opaque HAL SOC handle
  * @ba_window_size: BlockAck window size
+ * @tid: TID number
  *
  */
 static inline uint32_t hal_get_reo_qdesc_size(void *hal_soc,
-					      uint32_t ba_window_size)
+	uint32_t ba_window_size, int tid)
 {
-	if (ba_window_size <= 1)
-		return sizeof(struct rx_reo_queue);
+	/* Return descriptor size corresponding to window size of 2 since
+	 * we set ba_window_size to 2 while setting up REO descriptors as
+	 * a WAR to get 2k jump exception aggregates are received without
+	 * a BA session.
+	 */
+	if (ba_window_size <= 1) {
+		if (tid != HAL_NON_QOS_TID)
+			return sizeof(struct rx_reo_queue) +
+				sizeof(struct rx_reo_queue_ext);
+		else
+			return sizeof(struct rx_reo_queue);
+	}
 
 	if (ba_window_size <= 105)
 		return sizeof(struct rx_reo_queue) +

hal/wifi3.0/hal_reo.c

@@ -112,7 +112,12 @@ void hal_reo_qdesc_setup(void *hal_soc, int tid, uint32_t ba_window_size,
 
 	if (ba_window_size < 1)
 		ba_window_size = 1;
-
+	/* WAR to get 2k exception in Non BA case.
+	 * Setting window size to 2 to get 2k jump exception
+	 * when we receive aggregates in Non BA case
+	 */
+	if ((ba_window_size == 1) && (tid != HAL_NON_QOS_TID))
+		ba_window_size++;
 	/* Set RTY bit for non-BA case. Duplicate detection is currently not
 	 * done by HW in non-BA case if RTY bit is not set.
 	 * TODO: This is a temporary War and should be removed once HW fix is