Commit 9a244ebe authored by Hawking Zhang's avatar Hawking Zhang Committed by Alex Deucher
Browse files

drm/amdgpu: add atomfirmware helper funciton to query reserved fb size 



fw_reserved_size_in_kb is introduced for driver to query
the TMR region reserved by PSP BL in Sienna_Cichlid and onwards

Signed-off-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 718715e6

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

+38 −0
Original line number Diff line number Diff line
@@ -325,6 +325,9 @@ bool amdgpu_atomfirmware_mem_ecc_supported(struct amdgpu_device *adev) 


union firmware_info {

	struct atom_firmware_info_v3_1 v31;

	struct atom_firmware_info_v3_2 v32;

	struct atom_firmware_info_v3_3 v33;

	struct atom_firmware_info_v3_4 v34;

};



/*
@@ -590,3 +593,38 @@ int amdgpu_atomfirmware_get_mem_train_info(struct amdgpu_device *adev) 
	adev->fw_vram_usage.mem_train_support = true;

	return 0;

}



int amdgpu_atomfirmware_get_fw_reserved_fb_size(struct amdgpu_device *adev)

{

	struct atom_context *ctx = adev->mode_info.atom_context;

	union firmware_info *firmware_info;

	int index;

	u16 data_offset, size;

	u8 frev, crev;

	int fw_reserved_fb_size;



	index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,

			firmwareinfo);



	if (!amdgpu_atom_parse_data_header(ctx, index, &size,

				&frev, &crev, &data_offset))

		/* fail to parse data_header */

		return 0;



	firmware_info = (union firmware_info *)(ctx->bios + data_offset);



	if (frev !=3)

		return -EINVAL;



	switch (crev) {

	case 4:

		fw_reserved_fb_size =

			(firmware_info->v34.fw_reserved_size_in_kb << 10);

		break;

	default:

		fw_reserved_fb_size = 0;

		break;

	}



	return fw_reserved_fb_size;

}

drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h

+1 −0
Original line number Diff line number Diff line
@@ -36,5 +36,6 @@ int amdgpu_atomfirmware_get_clock_info(struct amdgpu_device *adev); 
int amdgpu_atomfirmware_get_gfx_info(struct amdgpu_device *adev);

bool amdgpu_atomfirmware_mem_ecc_supported(struct amdgpu_device *adev);

bool amdgpu_atomfirmware_sram_ecc_supported(struct amdgpu_device *adev);

int amdgpu_atomfirmware_get_fw_reserved_fb_size(struct amdgpu_device *adev);



#endif