diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c index a8ca808f453b..acabb57aa8af 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c @@ -373,3 +373,38 @@ int amdgpu_gmc_allocate_vm_inv_eng(struct amdgpu_device *adev) return 0; } + +/** + * amdgpu_tmz_set -- check and set if a device supports TMZ + * @adev: amdgpu_device pointer + * + * Check and set if an the device @adev supports Trusted Memory + * Zones (TMZ). + */ +void amdgpu_gmc_tmz_set(struct amdgpu_device *adev) +{ + switch (adev->asic_type) { + case CHIP_RAVEN: + case CHIP_RENOIR: + case CHIP_NAVI10: + case CHIP_NAVI14: + case CHIP_NAVI12: + /* Don't enable it by default yet. + */ + if (amdgpu_tmz < 1) { + adev->gmc.tmz_enabled = false; + dev_info(adev->dev, + "Trusted Memory Zone (TMZ) feature disabled as experimental (default)\n"); + } else { + adev->gmc.tmz_enabled = true; + dev_info(adev->dev, + "Trusted Memory Zone (TMZ) feature enabled as experimental (cmd line)\n"); + } + break; + default: + adev->gmc.tmz_enabled = false; + dev_warn(adev->dev, + "Trusted Memory Zone (TMZ) feature not supported\n"); + break; + } +} |