ipa: Add support to IPA FW load prior to kernel start

IPA FW is loaded via XBL to improve boot KPI enumeration
for MHI and USB use cases.Make changes to complete the IPA
initialization as early as possible without waiting for
user space trigger to load the fw.

Change-Id: I6fc6ab0a52784428363154b66237886e738048de
Signed-off-by: Ilia Lin <[email protected]>

drivers/platform/msm/ipa/ipa_v3/ipa.c

@@ -7056,6 +7056,7 @@ static int ipa3_pre_init(const struct ipa3_plat_drv_res *resource_p,
 	ipa3_ctx->ipa_wdi2_over_gsi = resource_p->ipa_wdi2_over_gsi;
 	ipa3_ctx->ipa_wdi3_over_gsi = resource_p->ipa_wdi3_over_gsi;
 	ipa3_ctx->ipa_fltrt_not_hashable = resource_p->ipa_fltrt_not_hashable;
+	ipa3_ctx->use_xbl_boot = resource_p->use_xbl_boot;
 	ipa3_ctx->use_64_bit_dma_mask = resource_p->use_64_bit_dma_mask;
 	ipa3_ctx->wan_rx_ring_size = resource_p->wan_rx_ring_size;
 	ipa3_ctx->lan_rx_ring_size = resource_p->lan_rx_ring_size;
@@ -7853,6 +7854,7 @@ static int get_ipa_dts_configuration(struct platform_device *pdev,
 	ipa_drv_res->ipa_use_uc_holb_monitor = false;
 	ipa_drv_res->ipa_wdi2_over_gsi = false;
 	ipa_drv_res->ipa_wdi3_over_gsi = false;
+	ipa_drv_res->use_xbl_boot = false;
 	ipa_drv_res->ipa_mhi_dynamic_config = false;
 	ipa_drv_res->use_64_bit_dma_mask = false;
 	ipa_drv_res->use_bw_vote = false;
@@ -8056,6 +8058,13 @@ static int get_ipa_dts_configuration(struct platform_device *pdev,
 			ipa_drv_res->ipa_fltrt_not_hashable
 			? "True" : "False");
 
+	ipa_drv_res->use_xbl_boot =
+			of_property_read_bool(pdev->dev.of_node,
+			"qcom,use-xbl-boot");
+	IPADBG("Is xbl loading used ? (%s)\n",
+			ipa_drv_res->use_xbl_boot
+			? "Yes":"No");
+
 	ipa_drv_res->use_64_bit_dma_mask =
 			of_property_read_bool(pdev->dev.of_node,
 			"qcom,use-64-bit-dma-mask");
@@ -8996,6 +9005,33 @@ int ipa3_plat_drv_probe(struct platform_device *pdev_p)
 		smmu_info.present[IPA_SMMU_CB_11AD] = true;
 		ipa_smmu_update_fw_loader();
 
+		if (ipa3_ctx->use_xbl_boot) {
+			/* Ensure 11ad probe is the last. */
+			if (!smmu_info.present[IPA_SMMU_CB_AP] ||
+				!smmu_info.present[IPA_SMMU_CB_WLAN]) {
+				IPAERR("AP or WLAN CB probe not done. Defer");
+				return -EPROBE_DEFER;
+			}
+
+			IPAERR("Using XBL boot load for IPA FW\n");
+			mutex_lock(&ipa3_ctx->fw_load_data.lock);
+			ipa3_ctx->fw_load_data.state = IPA_FW_LOAD_STATE_LOADED;
+			mutex_unlock(&ipa3_ctx->fw_load_data.lock);
+
+			result = ipa3_attach_to_smmu();
+			if (result) {
+				IPAERR("IPA attach to smmu failed %d\n",
+				result);
+				return result;
+			}
+
+			result = ipa3_post_init(&ipa3_res, ipa3_ctx->cdev.dev);
+			if (result) {
+				IPAERR("IPA post init failed %d\n", result);
+				return result;
+			}
+		}
+
 		return 0;
 	}
 

drivers/platform/msm/ipa/ipa_v3/ipa_i.h

@@ -1896,6 +1896,7 @@ struct ipa3_app_clock_vote {
  * @logbuf_low: ipc log buffer for low priority messages
  * @ipa_wdi2: using wdi-2.0
  * @ipa_fltrt_not_hashable: filter/route rules not hashable
+ * @use_xbl_boot: use xbl loading for IPA FW
  * @use_64_bit_dma_mask: using 64bits dma mask
  * @ctrl: holds the core specific operations based on
  *  core version (vtable like)
@@ -2021,6 +2022,7 @@ struct ipa3_context {
 	bool ipa_wdi3_over_gsi;
 	bool ipa_endp_delay_wa;
 	bool ipa_fltrt_not_hashable;
+	bool use_xbl_boot;
 	bool use_64_bit_dma_mask;
 	/* featurize if memory footprint becomes a concern */
 	struct ipa3_stats stats;
@@ -2150,6 +2152,7 @@ struct ipa3_plat_drv_res {
 	bool ipa_wdi2_over_gsi;
 	bool ipa_wdi3_over_gsi;
 	bool ipa_fltrt_not_hashable;
+	bool use_xbl_boot;
 	bool use_64_bit_dma_mask;
 	bool use_bw_vote;
 	u32 wan_rx_ring_size;