[PATCH 01/12] amdgpu: add UAPI for creating encrypted buffers

[Aaron Liu]

From: Huang Rui <ray.huang at amd.com>

To align the kernel uapi change from Alex:

"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."

We will use GEM_CREATE_ENCRYPTED flag for secure buffer allocation.

Signed-off-by: Huang Rui <ray.huang at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
---
 include/drm/amdgpu_drm.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/drm/amdgpu_drm.h b/include/drm/amdgpu_drm.h
index 5c28aa7..1a95e37 100644
--- a/include/drm/amdgpu_drm.h
+++ b/include/drm/amdgpu_drm.h
@@ -141,6 +141,11 @@ 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)
 
 /* Hybrid specific */
 /* Flag that the memory allocation should be from top of domain */
-- 
2.7.4