drm/amdgpu: Add logic for VF data exchange region to init from dynamic crit_region offsets

1. Added VF logic to init data exchange region using the offsets from dynamic(v2) critical regions;

Signed-off-by: Ellen Pan <yunru.pan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: Ellen Pan

drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c

@@ -218,12 +218,12 @@ int amdgpu_virt_alloc_mm_table(struct amdgpu_device *adev)
 				    &adev->virt.mm_table.gpu_addr,
 				    (void *)&adev->virt.mm_table.cpu_addr);
 	if (r) {
-		DRM_ERROR("failed to alloc mm table and error = %d.\n", r);
+		dev_err(adev->dev, "failed to alloc mm table and error = %d.\n", r);
 		return r;
 	}
 
 	memset((void *)adev->virt.mm_table.cpu_addr, 0, PAGE_SIZE);
-	DRM_INFO("MM table gpu addr = 0x%llx, cpu addr = %p.\n",
+	dev_info(adev->dev, "MM table gpu addr = 0x%llx, cpu addr = %p.\n",
 		 adev->virt.mm_table.gpu_addr,
 		 adev->virt.mm_table.cpu_addr);
 	return 0;
@@ -403,7 +403,9 @@ static void amdgpu_virt_ras_reserve_bps(struct amdgpu_device *adev)
 			if (amdgpu_bo_create_kernel_at(adev, bp << AMDGPU_GPU_PAGE_SHIFT,
 							AMDGPU_GPU_PAGE_SIZE,
 							&bo, NULL))
-				DRM_DEBUG("RAS WARN: reserve vram for retired page %llx fail\n", bp);
+				dev_dbg(adev->dev,
+						"RAS WARN: reserve vram for retired page %llx fail\n",
+						bp);
 			data->bps_bo[i] = bo;
 		}
 		data->last_reserved = i + 1;
@@ -671,24 +673,50 @@ static void amdgpu_virt_update_vf2pf_work_item(struct work_struct *work)
 	schedule_delayed_work(&(adev->virt.vf2pf_work), adev->virt.vf2pf_update_interval_ms);
 }
 
+static int amdgpu_virt_read_exchange_data_from_mem(struct amdgpu_device *adev, uint32_t *pfvf_data)
+{
+	uint32_t dataexchange_offset =
+		adev->virt.crit_regn_tbl[AMD_SRIOV_MSG_DATAEXCHANGE_TABLE_ID].offset;
+	uint32_t dataexchange_size =
+		adev->virt.crit_regn_tbl[AMD_SRIOV_MSG_DATAEXCHANGE_TABLE_ID].size_kb << 10;
+	uint64_t pos = 0;
+
+	dev_info(adev->dev,
+			"Got data exchange info from dynamic crit_region_table at offset 0x%x with size of 0x%x bytes.\n",
+			dataexchange_offset, dataexchange_size);
+
+	if (!IS_ALIGNED(dataexchange_offset, 4) || !IS_ALIGNED(dataexchange_size, 4)) {
+		dev_err(adev->dev, "Data exchange data not aligned to 4 bytes\n");
+		return -EINVAL;
+	}
+
+	pos = (uint64_t)dataexchange_offset;
+	amdgpu_device_vram_access(adev, pos, pfvf_data,
+			dataexchange_size, false);
+
+	return 0;
+}
+
 void amdgpu_virt_fini_data_exchange(struct amdgpu_device *adev)
 {
 	if (adev->virt.vf2pf_update_interval_ms != 0) {
-		DRM_INFO("clean up the vf2pf work item\n");
+		dev_info(adev->dev, "clean up the vf2pf work item\n");
 		cancel_delayed_work_sync(&adev->virt.vf2pf_work);
 		adev->virt.vf2pf_update_interval_ms = 0;
 	}
 }
 
 void amdgpu_virt_init_data_exchange(struct amdgpu_device *adev)
 {
+	uint32_t *pfvf_data = NULL;
+
 	adev->virt.fw_reserve.p_pf2vf = NULL;
 	adev->virt.fw_reserve.p_vf2pf = NULL;
 	adev->virt.vf2pf_update_interval_ms = 0;
 	adev->virt.vf2pf_update_retry_cnt = 0;
 
 	if (adev->mman.fw_vram_usage_va && adev->mman.drv_vram_usage_va) {
-		DRM_WARN("Currently fw_vram and drv_vram should not have values at the same time!");
+		dev_warn(adev->dev, "Currently fw_vram and drv_vram should not have values at the same time!");
 	} else if (adev->mman.fw_vram_usage_va || adev->mman.drv_vram_usage_va) {
 		/* go through this logic in ip_init and reset to init workqueue*/
 		amdgpu_virt_exchange_data(adev);
@@ -697,11 +725,34 @@ void amdgpu_virt_init_data_exchange(struct amdgpu_device *adev)
 		schedule_delayed_work(&(adev->virt.vf2pf_work), msecs_to_jiffies(adev->virt.vf2pf_update_interval_ms));
 	} else if (adev->bios != NULL) {
 		/* got through this logic in early init stage to get necessary flags, e.g. rlcg_acc related*/
-		adev->virt.fw_reserve.p_pf2vf =
-			(struct amd_sriov_msg_pf2vf_info_header *)
-			(adev->bios + (AMD_SRIOV_MSG_PF2VF_OFFSET_KB_V1 << 10));
+		if (adev->virt.req_init_data_ver == GPU_CRIT_REGION_V2) {
+			pfvf_data =
+				kzalloc(adev->virt.crit_regn_tbl[AMD_SRIOV_MSG_DATAEXCHANGE_TABLE_ID].size_kb << 10,
+					GFP_KERNEL);
+			if (!pfvf_data) {
+				dev_err(adev->dev, "Failed to allocate memory for pfvf_data\n");
+				return;
+			}
 
-		amdgpu_virt_read_pf2vf_data(adev);
+			if (amdgpu_virt_read_exchange_data_from_mem(adev, pfvf_data))
+				goto free_pfvf_data;
+
+			adev->virt.fw_reserve.p_pf2vf =
+				(struct amd_sriov_msg_pf2vf_info_header *)pfvf_data;
+
+			amdgpu_virt_read_pf2vf_data(adev);
+
+free_pfvf_data:
+			kfree(pfvf_data);
+			pfvf_data = NULL;
+			adev->virt.fw_reserve.p_pf2vf = NULL;
+		} else {
+			adev->virt.fw_reserve.p_pf2vf =
+				(struct amd_sriov_msg_pf2vf_info_header *)
+				(adev->bios + (AMD_SRIOV_MSG_PF2VF_OFFSET_KB_V1 << 10));
+
+			amdgpu_virt_read_pf2vf_data(adev);
+		}
 	}
 }
 
@@ -714,14 +765,29 @@ void amdgpu_virt_exchange_data(struct amdgpu_device *adev)
 
 	if (adev->mman.fw_vram_usage_va || adev->mman.drv_vram_usage_va) {
 		if (adev->mman.fw_vram_usage_va) {
-			adev->virt.fw_reserve.p_pf2vf =
-				(struct amd_sriov_msg_pf2vf_info_header *)
-				(adev->mman.fw_vram_usage_va + (AMD_SRIOV_MSG_PF2VF_OFFSET_KB_V1 << 10));
-			adev->virt.fw_reserve.p_vf2pf =
-				(struct amd_sriov_msg_vf2pf_info_header *)
-				(adev->mman.fw_vram_usage_va + (AMD_SRIOV_MSG_VF2PF_OFFSET_KB_V1 << 10));
-			adev->virt.fw_reserve.ras_telemetry =
-				(adev->mman.fw_vram_usage_va + (AMD_SRIOV_MSG_RAS_TELEMETRY_OFFSET_KB_V1 << 10));
+			if (adev->virt.req_init_data_ver == GPU_CRIT_REGION_V2) {
+				adev->virt.fw_reserve.p_pf2vf =
+					(struct amd_sriov_msg_pf2vf_info_header *)
+					(adev->mman.fw_vram_usage_va +
+					adev->virt.crit_regn_tbl[AMD_SRIOV_MSG_DATAEXCHANGE_TABLE_ID].offset);
+				adev->virt.fw_reserve.p_vf2pf =
+					(struct amd_sriov_msg_vf2pf_info_header *)
+					(adev->mman.fw_vram_usage_va +
+					adev->virt.crit_regn_tbl[AMD_SRIOV_MSG_DATAEXCHANGE_TABLE_ID].offset +
+					(AMD_SRIOV_MSG_SIZE_KB << 10));
+				adev->virt.fw_reserve.ras_telemetry =
+					(adev->mman.fw_vram_usage_va +
+					adev->virt.crit_regn_tbl[AMD_SRIOV_MSG_RAS_TELEMETRY_TABLE_ID].offset);
+			} else {
+				adev->virt.fw_reserve.p_pf2vf =
+					(struct amd_sriov_msg_pf2vf_info_header *)
+					(adev->mman.fw_vram_usage_va + (AMD_SRIOV_MSG_PF2VF_OFFSET_KB_V1 << 10));
+				adev->virt.fw_reserve.p_vf2pf =
+					(struct amd_sriov_msg_vf2pf_info_header *)
+					(adev->mman.fw_vram_usage_va + (AMD_SRIOV_MSG_VF2PF_OFFSET_KB_V1 << 10));
+				adev->virt.fw_reserve.ras_telemetry =
+					(adev->mman.fw_vram_usage_va + (AMD_SRIOV_MSG_RAS_TELEMETRY_OFFSET_KB_V1 << 10));
+			}
 		} else if (adev->mman.drv_vram_usage_va) {
 			adev->virt.fw_reserve.p_pf2vf =
 				(struct amd_sriov_msg_pf2vf_info_header *)
@@ -829,7 +895,7 @@ static bool amdgpu_virt_init_req_data(struct amdgpu_device *adev, u32 reg)
 			break;
 		default: /* other chip doesn't support SRIOV */
 			is_sriov = false;
-			DRM_ERROR("Unknown asic type: %d!\n", adev->asic_type);
+			dev_err(adev->dev, "Unknown asic type: %d!\n", adev->asic_type);
 			break;
 		}
 	}
@@ -1510,7 +1576,7 @@ amdgpu_ras_block_to_sriov(struct amdgpu_device *adev, enum amdgpu_ras_block bloc
 	case AMDGPU_RAS_BLOCK__MPIO:
 		return RAS_TELEMETRY_GPU_BLOCK_MPIO;
 	default:
-		DRM_WARN_ONCE("Unsupported SRIOV RAS telemetry block 0x%x\n",
+		dev_warn(adev->dev, "Unsupported SRIOV RAS telemetry block 0x%x\n",
 			      block);
 		return RAS_TELEMETRY_GPU_BLOCK_COUNT;
 	}