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drm/amdgpu: add atomfirmware helper function to query sram ecc caps 

sram ecc capability could be get from firmware_capability field in firmwareinfo 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>
hifive-unleashed-5.2
Hawking Zhang 2019-03-07 10:52:43 +08:00 committed by Alex Deucher
parent 511c4348cf
commit 8b6da23f51
2 changed files with 31 additions and 0 deletions
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30
drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
View File

@ -271,6 +271,36 @@ union firmware_info {
struct atom_firmware_info_v3_1 v31;
};
/*
* Return true if vbios supports sram ecc or false if not
*/
bool amdgpu_atomfirmware_sram_ecc_supported(struct amdgpu_device *adev)
{
struct amdgpu_mode_info *mode_info = &adev->mode_info;
int index;
u16 data_offset, size;
union firmware_info *firmware_info;
u8 frev, crev;
bool sram_ecc_supported = false;
index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
firmwareinfo);
if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context,
index, &size, &frev, &crev, &data_offset)) {
/* support firmware_info 3.1 + */
if ((frev == 3 && crev >=1) || (frev > 3)) {
firmware_info = (union firmware_info *)
(mode_info->atom_context->bios + data_offset);
sram_ecc_supported =
(le32_to_cpu(firmware_info->v31.firmware_capability) &
ATOM_FIRMWARE_CAP_SRAM_ECC) ? true : false;
}
}
return sram_ecc_supported;
}
union smu_info {
struct atom_smu_info_v3_1 v31;
};

1
drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h
View File

@ -34,5 +34,6 @@ 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);
bool amdgpu_atomfirmware_sram_ecc_supported(struct amdgpu_device *adev);
#endif