Commit b71a564e authored by Luben Tuikov's avatar Luben Tuikov Committed by Alex Deucher
Browse files

drm/amdgpu: Fine-grained TMZ support 



Add fine-grained per-ASIC TMZ support.

At the moment TMZ support is experimental for all
ASICs which support it.

Signed-off-by: default avatarLuben Tuikov <luben.tuikov@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 218c0b7f

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

+20 −10
Original line number Diff line number Diff line
@@ -383,18 +383,28 @@ int amdgpu_gmc_allocate_vm_inv_eng(struct amdgpu_device *adev) 
 */

void amdgpu_gmc_tmz_set(struct amdgpu_device *adev)

{

	if (!amdgpu_tmz)

		return;



	if (adev->asic_type < CHIP_RAVEN ||

	    adev->asic_type == CHIP_ARCTURUS) {

	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_warn(adev->dev,

			 "Trusted Memory Zone (TMZ) feature not supported\n");

			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 supported and enabled\n");

				 "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;

	}

}

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