qcacmn: Add configurable option for MSI interrupts

Provide multiple combinations to configure the msi interrupts
of DP and CE based on the number of MSIs available in the platform.
Number of MSIs used for CE and DP can be changed by modifying the
MSI assignment table in platform driver. Best possible mask for that
MSI is automatically chosen based on predetermined settings.

Change-Id: I02b44fb033631d69d97f2d8d2d3f698541d37aad

dp/wifi3.0/dp_main.c

@@ -1203,10 +1203,10 @@ static QDF_STATUS dp_peer_ast_entry_del_by_pdev(struct cdp_soc_t *soc_handle,
  * Return: the index in the grp_mask array with the ring number.
  * -QDF_STATUS_E_NOENT if no entry is found
  */
-static int dp_srng_find_ring_in_mask(int ring_num, int *grp_mask)
+static int dp_srng_find_ring_in_mask(int ring_num, uint8_t *grp_mask)
 {
 	int ext_group_num;
-	int mask = 1 << ring_num;
+	uint8_t mask = 1 << ring_num;
 
 	for (ext_group_num = 0; ext_group_num < WLAN_CFG_INT_NUM_CONTEXTS;
 	     ext_group_num++) {
@@ -1221,7 +1221,7 @@ static int dp_srng_calculate_msi_group(struct dp_soc *soc,
 				       enum hal_ring_type ring_type,
 				       int ring_num)
 {
-	int *grp_mask;
+	uint8_t *grp_mask;
 
 	switch (ring_type) {
 	case WBM2SW_RELEASE:
@@ -1304,6 +1304,53 @@ static int dp_srng_calculate_msi_group(struct dp_soc *soc,
 	return dp_srng_find_ring_in_mask(ring_num, grp_mask);
 }
 
+/*
+ * dp_get_num_msi_available()- API to get number of MSIs available
+ * @dp_soc: DP soc Handle
+ * @interrupt_mode: Mode of interrupts
+ *
+ * Return: Number of MSIs available or 0 in case of integrated
+ */
+#if defined(WLAN_MAX_PDEVS) && (WLAN_MAX_PDEVS == 1)
+static int dp_get_num_msi_available(struct dp_soc *soc, int interrupt_mode)
+{
+	return 0;
+}
+#else
+/*
+ * dp_get_num_msi_available()- API to get number of MSIs available
+ * @dp_soc: DP soc Handle
+ * @interrupt_mode: Mode of interrupts
+ *
+ * Return: Number of MSIs available or 0 in case of integrated
+ */
+static int dp_get_num_msi_available(struct dp_soc *soc, int interrupt_mode)
+{
+	int msi_data_count;
+	int msi_data_start;
+	int msi_irq_start;
+	int ret;
+
+	if (interrupt_mode == DP_INTR_INTEGRATED) {
+		return 0;
+	} else if (interrupt_mode == DP_INTR_MSI || interrupt_mode ==
+		   DP_INTR_POLL) {
+		ret = pld_get_user_msi_assignment(soc->osdev->dev, "DP",
+						  &msi_data_count,
+						  &msi_data_start,
+						  &msi_irq_start);
+		if (ret) {
+			qdf_err("Unable to get DP MSI assignment %d",
+				interrupt_mode);
+			return -EINVAL;
+		}
+		return msi_data_count;
+	}
+	qdf_err("Interrupt mode invalid %d", interrupt_mode);
+	return -EINVAL;
+}
+#endif
+
 /**
  * dp_is_msi_group_number_invalid() - check msi_group_number valid or not
  * @msi_group_number: MSI group number.
@@ -3470,7 +3517,7 @@ static uint8_t dp_soc_ring_if_nss_offloaded(struct dp_soc *soc, enum hal_ring_ty
 static void dp_soc_disable_unused_mac_intr_mask(struct dp_soc *soc,
 						int mac_num)
 {
-	int *grp_mask = NULL;
+	uint8_t *grp_mask = NULL;
 	int group_number;
 
 	grp_mask = &soc->wlan_cfg_ctx->int_host2rxdma_ring_mask[0];
@@ -3503,7 +3550,7 @@ static void dp_soc_disable_unused_mac_intr_mask(struct dp_soc *soc,
 static void dp_soc_reset_intr_mask(struct dp_soc *soc)
 {
 	uint8_t j;
-	int *grp_mask = NULL;
+	uint8_t *grp_mask = NULL;
 	int group_number, mask, num_ring;
 
 	/* number of tx ring */
@@ -12906,6 +12953,7 @@ void *dp_soc_init(struct dp_soc *soc, HTC_HANDLE htc_handle,
 	bool is_monitor_mode = false;
 	struct hal_reo_params reo_params;
 	uint8_t i;
+	int num_dp_msi;
 
 	wlan_minidump_log(soc, sizeof(*soc), soc->ctrl_psoc,
 			  WLAN_MD_DP_SOC, "dp_soc");
@@ -12941,8 +12989,13 @@ void *dp_soc_init(struct dp_soc *soc, HTC_HANDLE htc_handle,
 	    QDF_GLOBAL_MONITOR_MODE)
 		is_monitor_mode = true;
 
-	wlan_cfg_fill_interrupt_mask(soc->wlan_cfg_ctx, soc->intr_mode,
-				     is_monitor_mode);
+	num_dp_msi = dp_get_num_msi_available(soc, soc->intr_mode);
+	if (num_dp_msi < 0) {
+		dp_init_err("%pK: dp_interrupt assignment failed", soc);
+		goto fail3;
+	}
+	wlan_cfg_fill_interrupt_mask(soc->wlan_cfg_ctx, num_dp_msi,
+				     soc->intr_mode, is_monitor_mode);
 
 	/* initialize WBM_IDLE_LINK ring */
 	if (dp_hw_link_desc_ring_init(soc)) {