From 3f2005fee442f5022664d63017cf76f2af793c75 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Wed, 7 Aug 2019 21:43:24 -0500
Subject: drm/amdgpu: add UAPI for creating encrypted buffers
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Git-commit: 35ce006004821c5e9ae8fe03d048567cec99c41e
Patch-mainline: v5.8-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
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>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
include/uapi/drm/amdgpu_drm.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index d28b4ce744d5..4a0829d35e72 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -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 */
--
2.28.0