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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: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2016-03-14 16:51:24 -04:00
parent 2cea03de10
commit 397a270eff
2 changed files with 32 additions and 0 deletions
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30
drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
View File

@ -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;

2
drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h
View File

@ -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);