drm/amdgpu: query vram type from atombios

The vram type for dGPU is stored in umc_info while sys mem type
for APU is stored in integratedsysteminfo

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 91 insertions, 4 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
index ff8efd0f8fd5..a0f48cb9b8f0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
@@ -114,6 +114,9 @@ union igp_info {
 	struct atom_integrated_system_info_v1_11 v11;
 };
 
+union umc_info {
+	struct atom_umc_info_v3_1 v31;
+};
 /*
  * Return vram width from integrated system info table, if available,
  * or 0 if not.
@@ -143,6 +146,94 @@ int amdgpu_atomfirmware_get_vram_width(struct amdgpu_device *adev)
 	return 0;
 }
 
+static int convert_atom_mem_type_to_vram_type (struct amdgpu_device *adev,
+					       int atom_mem_type)
+{
+	int vram_type;
+
+	if (adev->flags & AMD_IS_APU) {
+		switch (atom_mem_type) {
+		case Ddr2MemType:
+		case LpDdr2MemType:
+			vram_type = AMDGPU_VRAM_TYPE_DDR2;
+			break;
+		case Ddr3MemType:
+		case LpDdr3MemType:
+			vram_type = AMDGPU_VRAM_TYPE_DDR3;
+			break;
+		case Ddr4MemType:
+		case LpDdr4MemType:
+			vram_type = AMDGPU_VRAM_TYPE_DDR4;
+			break;
+		default:
+			vram_type = AMDGPU_VRAM_TYPE_UNKNOWN;
+			break;
+		}
+	} else {
+		switch (atom_mem_type) {
+		case ATOM_DGPU_VRAM_TYPE_GDDR5:
+			vram_type = AMDGPU_VRAM_TYPE_GDDR5;
+			break;
+		case ATOM_DGPU_VRAM_TYPE_HBM:
+			vram_type = AMDGPU_VRAM_TYPE_HBM;
+			break;
+		default:
+			vram_type = AMDGPU_VRAM_TYPE_UNKNOWN;
+			break;
+		}
+	}
+
+	return vram_type;
+}
+/*
+ * Return vram type from either integrated system info table
+ * or umc info table, if available, or 0 (TYPE_UNKNOWN) if not
+ */
+int amdgpu_atomfirmware_get_vram_type(struct amdgpu_device *adev)
+{
+	struct amdgpu_mode_info *mode_info = &adev->mode_info;
+	int index;
+	u16 data_offset, size;
+	union igp_info *igp_info;
+	union umc_info *umc_info;
+	u8 frev, crev;
+	u8 mem_type;
+
+	if (adev->flags & AMD_IS_APU)
+		index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
+						    integratedsysteminfo);
+	else
+		index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
+						    umc_info);
+	if (amdgpu_atom_parse_data_header(mode_info->atom_context,
+					  index, &size,
+					  &frev, &crev, &data_offset)) {
+		if (adev->flags & AMD_IS_APU) {
+			igp_info = (union igp_info *)
+				(mode_info->atom_context->bios + data_offset);
+			switch (crev) {
+			case 11:
+				mem_type = igp_info->v11.memorytype;
+				return convert_atom_mem_type_to_vram_type(adev, mem_type);
+			default:
+				return 0;
+			}
+		} else {
+			umc_info = (union umc_info *)
+				(mode_info->atom_context->bios + data_offset);
+			switch (crev) {
+			case 1:
+				mem_type = umc_info->v31.vram_type;
+				return convert_atom_mem_type_to_vram_type(adev, mem_type);
+			default:
+				return 0;
+			}
+		}
+	}
+
+	return 0;
+}
+
 union firmware_info {
 	struct atom_firmware_info_v3_1 v31;
 };
@@ -151,10 +242,6 @@ union smu_info {
 	struct atom_smu_info_v3_1 v31;
 };
 
-union umc_info {
-	struct atom_umc_info_v3_1 v31;
-};
-
 int amdgpu_atomfirmware_get_clock_info(struct amdgpu_device *adev)
 {
 	struct amdgpu_mode_info *mode_info = &adev->mode_info;