From: Srinivasan Shanmugam <srinivasan.shanmugam@xxxxxxx> This commit adds the PACKET3_RUN_CLEANER_SHADER definition. This packet is a command packet used to instruct the GPU to execute the cleaner shader. The cleaner shader is a piece of GPU code that is used to clear or initialize certain GPU resources, such as Local Data Share (LDS), Vector General Purpose Registers (VGPRs), and Scalar General Purpose Registers (SGPRs). Clearing these resources is important for ensuring data isolation between different workloads running on the GPU. The PACKET3_RUN_CLEANER_SHADER packet is used to trigger the execution of the cleaner shader on the GPU. The packet consists of a header followed by a RESERVED field, which is programmed to zero. When the GPU receives this packet, it fetches and executes the cleaner shader instructions from the location specified in the packet. The cleaner shader feature helps to enhances security and reliability by preventing data leaks between workloads. Cc: Christian König <christian.koenig@xxxxxxx> Cc: Alex Deucher <alexander.deucher@xxxxxxx> Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/soc15d.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/soc15d.h b/drivers/gpu/drm/amd/amdgpu/soc15d.h index e74e1983da53..b9cbeb389edc 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc15d.h +++ b/drivers/gpu/drm/amd/amdgpu/soc15d.h @@ -413,6 +413,10 @@ # define PACKET3_QUERY_STATUS_DOORBELL_OFFSET(x) ((x) << 2) # define PACKET3_QUERY_STATUS_ENG_SEL(x) ((x) << 25) +#define PACKET3_RUN_CLEANER_SHADER 0xD2 +/* 1. header + * 2. RESERVED [31:0] + */ #define VCE_CMD_NO_OP 0x00000000 #define VCE_CMD_END 0x00000001 -- 2.46.0
