qcacmn: Add support to track high watermark for SRNGs

Add support to track the high watermark for the number
of entries which are used at any given instant. This helps
in identifying if the ring size is sufficient or is being
full for certain use-cases.

Change-Id: Id3ffa52c653696699fbcfbb556a815d5f7908863
CRs-Fixed: 3235115

hal/wifi3.0/hal_srng.c

@@ -1485,6 +1485,37 @@ void hal_srng_last_desc_cleared_init(struct hal_srng *srng)
 }
 #endif /* CLEAR_SW2TCL_CONSUMED_DESC */
 
+#ifdef WLAN_DP_SRNG_USAGE_WM_TRACKING
+static inline void hal_srng_update_high_wm_thresholds(struct hal_srng *srng)
+{
+	srng->high_wm.bin_thresh[HAL_SRNG_HIGH_WM_BIN_90_to_100] =
+			((srng->num_entries * 90) / 100);
+	srng->high_wm.bin_thresh[HAL_SRNG_HIGH_WM_BIN_80_to_90] =
+			((srng->num_entries * 80) / 100);
+	srng->high_wm.bin_thresh[HAL_SRNG_HIGH_WM_BIN_70_to_80] =
+			((srng->num_entries * 70) / 100);
+	srng->high_wm.bin_thresh[HAL_SRNG_HIGH_WM_BIN_60_to_70] =
+			((srng->num_entries * 60) / 100);
+	srng->high_wm.bin_thresh[HAL_SRNG_HIGH_WM_BIN_50_to_60] =
+			((srng->num_entries * 50) / 100);
+	/* Below 50% threshold is not needed */
+	srng->high_wm.bin_thresh[HAL_SRNG_HIGH_WM_BIN_BELOW_50_PERCENT] = 0;
+
+	hal_info("ring_id: %u, wm_thresh- <50:%u, 50-60:%u, 60-70:%u, 70-80:%u, 80-90:%u, 90-100:%u",
+		 srng->ring_id,
+		 srng->high_wm.bin_thresh[HAL_SRNG_HIGH_WM_BIN_BELOW_50_PERCENT],
+		 srng->high_wm.bin_thresh[HAL_SRNG_HIGH_WM_BIN_50_to_60],
+		 srng->high_wm.bin_thresh[HAL_SRNG_HIGH_WM_BIN_60_to_70],
+		 srng->high_wm.bin_thresh[HAL_SRNG_HIGH_WM_BIN_70_to_80],
+		 srng->high_wm.bin_thresh[HAL_SRNG_HIGH_WM_BIN_80_to_90],
+		 srng->high_wm.bin_thresh[HAL_SRNG_HIGH_WM_BIN_90_to_100]);
+}
+#else
+static inline void hal_srng_update_high_wm_thresholds(struct hal_srng *srng)
+{
+}
+#endif
+
 /**
  * hal_srng_setup - Initialize HW SRNG ring.
  * @hal_soc: Opaque HAL SOC handle
@@ -1547,6 +1578,7 @@ void *hal_srng_setup(void *hal_soc, int ring_type, int ring_num,
 	srng->prefetch_timer = ring_params->prefetch_timer;
 	srng->hal_soc = hal_soc;
 	hal_srng_set_msi2_params(srng, ring_params);
+	hal_srng_update_high_wm_thresholds(srng);
 
 	for (i = 0 ; i < MAX_SRNG_REG_GROUPS; i++) {
 		srng->hwreg_base[i] = dev_base_addr + ring_config->reg_start[i]