diff options
author | Hawking Zhang <Hawking.Zhang@amd.com> | 2019-03-07 10:14:13 +0800 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2019-03-19 15:36:51 -0500 |
commit | 511c4348cf7bb4d224e944e6d84a5bf8edacbfef (patch) | |
tree | afa3f4c6592388d3204dceea3cf9f876ec686274 /drivers/gpu/drm/amd | |
parent | ed606ca3d30d2e73d566e087214274399ca016d3 (diff) |
drm/amdgpu: add atomfirmware helper function to query ecc status
ecc default status (enabled or disabled) could be get from umc_config field in umc_info table
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>
Diffstat (limited to 'drivers/gpu/drm/amd')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c | 31 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h | 1 |
2 files changed, 32 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c index ea917d640688..742af0ed94d7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c @@ -236,6 +236,37 @@ int amdgpu_atomfirmware_get_vram_type(struct amdgpu_device *adev) return 0; } +/* + * Return true if vbios enabled ecc by default, if umc info table is available + * or false if ecc is not enabled or umc info table is not available + */ +bool amdgpu_atomfirmware_mem_ecc_supported(struct amdgpu_device *adev) +{ + struct amdgpu_mode_info *mode_info = &adev->mode_info; + int index; + u16 data_offset, size; + union umc_info *umc_info; + u8 frev, crev; + bool ecc_default_enabled = false; + + 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)) { + /* support umc_info 3.1+ */ + if ((frev == 3 && crev >= 1) || (frev > 3)) { + umc_info = (union umc_info *) + (mode_info->atom_context->bios + data_offset); + ecc_default_enabled = + (le32_to_cpu(umc_info->v31.umc_config) & + UMC_CONFIG__DEFAULT_MEM_ECC_ENABLE) ? true : false; + } + } + + return ecc_default_enabled; +} + union firmware_info { struct atom_firmware_info_v3_1 v31; }; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h index f8ea77d4e863..6da079e60619 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h @@ -33,5 +33,6 @@ int amdgpu_atomfirmware_get_vram_width(struct amdgpu_device *adev); int amdgpu_atomfirmware_get_vram_type(struct amdgpu_device *adev); 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); #endif |