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Commit 397a270e authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu: add an interface to get gfx constants from atombios 



Fetch the values from atom rather than hardcoding them in the
driver.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2cea03de

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

+30 −0
Original line number Diff line number Diff line
@@ -684,6 +684,36 @@ int amdgpu_atombios_get_clock_info(struct amdgpu_device *adev) 
	return ret;

}



union gfx_info {

	ATOM_GFX_INFO_V2_1 info;

};



int amdgpu_atombios_get_gfx_info(struct amdgpu_device *adev)

{

	struct amdgpu_mode_info *mode_info = &adev->mode_info;

	int index = GetIndexIntoMasterTable(DATA, GFX_Info);

	uint8_t frev, crev;

	uint16_t data_offset;

	int ret = -EINVAL;



	if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, NULL,

				   &frev, &crev, &data_offset)) {

		union gfx_info *gfx_info = (union gfx_info *)

			(mode_info->atom_context->bios + data_offset);



		adev->gfx.config.max_shader_engines = gfx_info->info.max_shader_engines;

		adev->gfx.config.max_tile_pipes = gfx_info->info.max_tile_pipes;

		adev->gfx.config.max_cu_per_sh = gfx_info->info.max_cu_per_sh;

		adev->gfx.config.max_sh_per_se = gfx_info->info.max_sh_per_se;

		adev->gfx.config.max_backends_per_se = gfx_info->info.max_backends_per_se;

		adev->gfx.config.max_texture_channel_caches =

			gfx_info->info.max_texture_channel_caches;



		ret = 0;

	}

	return ret;

}



union igp_info {

	struct _ATOM_INTEGRATED_SYSTEM_INFO info;

	struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 info_2;

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

+2 −0
Original line number Diff line number Diff line
@@ -144,6 +144,8 @@ bool amdgpu_atombios_get_connector_info_from_object_table(struct amdgpu_device * 


int amdgpu_atombios_get_clock_info(struct amdgpu_device *adev);



int amdgpu_atombios_get_gfx_info(struct amdgpu_device *adev);



bool amdgpu_atombios_get_asic_ss_info(struct amdgpu_device *adev,

				      struct amdgpu_atom_ss *ss,

				      int id, u32 clock);