Commit 89927235 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu: add UAPI for allocating doorbell memory 



This patch adds flags for a new gem domain AMDGPU_GEM_DOMAIN_DOORBELL
in the UAPI layer.

V2: Drop 'memory' from description (Christian)

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian Koenig <christian.koenig@amd.com>
Reviewed-by: default avatarChristian Koenig <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarShashank Sharma <shashank.sharma@amd.com>
parent 794c33c6

include/uapi/drm/amdgpu_drm.h

+6 −1
Original line number Diff line number Diff line
@@ -94,6 +94,9 @@ extern "C" { 
 *

 * %AMDGPU_GEM_DOMAIN_OA	Ordered append, used by 3D or Compute engines

 * for appending data.

 *

 * %AMDGPU_GEM_DOMAIN_DOORBELL	Doorbell. It is an MMIO region for

 * signalling user mode queues.

 */

#define AMDGPU_GEM_DOMAIN_CPU		0x1

#define AMDGPU_GEM_DOMAIN_GTT		0x2
@@ -101,12 +104,14 @@ extern "C" { 
#define AMDGPU_GEM_DOMAIN_GDS		0x8

#define AMDGPU_GEM_DOMAIN_GWS		0x10

#define AMDGPU_GEM_DOMAIN_OA		0x20

#define AMDGPU_GEM_DOMAIN_DOORBELL	0x40

#define AMDGPU_GEM_DOMAIN_MASK		(AMDGPU_GEM_DOMAIN_CPU | \

					 AMDGPU_GEM_DOMAIN_GTT | \

					 AMDGPU_GEM_DOMAIN_VRAM | \

					 AMDGPU_GEM_DOMAIN_GDS | \

					 AMDGPU_GEM_DOMAIN_GWS | \

					 AMDGPU_GEM_DOMAIN_OA)

					 AMDGPU_GEM_DOMAIN_OA | \

					 AMDGPU_GEM_DOMAIN_DOORBELL)



/* Flag that CPU access will be required for the case of VRAM domain */

#define AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED	(1 << 0)