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drm/amdgpu: add UAPI for creating encrypted buffers

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Add a flag to the GEM_CREATE ioctl to create encrypted buffers.
Buffers with this flag set will be created with the TMZ bit set
in the PTEs or engines accessing them.  This is required in order
to properly access the data from the engines.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Alex Deucher 2019-08-07 21:43:24 -05:00
parent 82a7cf006e
commit 35ce006004
1 changed files with 5 additions and 0 deletions
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5
include/uapi/drm/amdgpu_drm.h
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@ -133,6 +133,11 @@ extern "C" {
* releasing the memory
*/
#define AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE (1 << 9)
/* Flag that BO will be encrypted and that the TMZ bit should be
* set in the PTEs when mapping this buffer via GPUVM or
* accessing it with various hw blocks
*/
#define AMDGPU_GEM_CREATE_ENCRYPTED (1 << 10)
struct drm_amdgpu_gem_create_in {
/** the requested memory size */