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drm/amdgpu: IOCTL interface for PRT support v4

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Till GFX8 we can only enable PRT support globally, but with the next hardware
generation we can do this on a per page basis.

Keep the interface consistent by adding PRT mappings and enable
support globally on current hardware when the first mapping is made.

v2: disable PRT support delayed and on all error paths
v3: PRT and other permissions are mutal exclusive,
    PRT mappings don't need a BO.
v4: update PRT mappings durign CS as well, make va_flags 64bit

Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Junwei Zhang
2017-01-16 13:59:01 +08:00
committed by Alex Deucher
parent 284710fa6c
commit b85891bd6d
5 changed files with 64 additions and 27 deletions
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2
include/uapi/drm/amdgpu_drm.h
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@@ -361,6 +361,8 @@ struct drm_amdgpu_gem_op {
#define AMDGPU_VM_PAGE_WRITEABLE (1 << 2)
/* executable mapping, new for VI */
#define AMDGPU_VM_PAGE_EXECUTABLE (1 << 3)
/* partially resident texture */
#define AMDGPU_VM_PAGE_PRT (1 << 4)
struct drm_amdgpu_gem_va {
/** GEM object handle */