From 8896abcfdd898a79d5795b0689bc944518860d21 Mon Sep 17 00:00:00 2001 From: Srinivasan Shanmugam Date: Fri, 11 Apr 2025 21:15:41 +0530 Subject: [PATCH 3191/5403] drm/amdgpu: Add PACKET3_RUN_CLEANER_SHADER_9_0 for Cleaner Shader execution MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This commit introduces the PACKET3_RUN_CLEANER_SHADER_9_0 definition, which is a command packet utilized to instruct the GPU to execute the cleaner shader for the GFX9.0 graphics architecture. The cleaner shader is a piece of GPU code that is responsible for clearing or initializing essential GPU resources, such as Local Data Share (LDS), Vector General Purpose Registers (VGPRs), and Scalar General Purpose Registers (SGPRs). Properly clearing these resources is vital for ensuring data isolation and security between different workloads executed on the GPU. When the GPU receives this packet, it fetches and runs the cleaner shader instructions from the specified location in the packet. Thus by preventing data leaks and ensuring that previous job states do not interfere with subsequent workloads. Cc: Christian König Cc: Alex Deucher Signed-off-by: Srinivasan Shanmugam Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/soc15d.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/soc15d.h b/drivers/gpu/drm/amd/amdgpu/soc15d.h index a5000c171c02..cf93fa477674 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc15d.h +++ b/drivers/gpu/drm/amd/amdgpu/soc15d.h @@ -552,6 +552,11 @@ # define PACKET3_QUERY_STATUS_DOORBELL_OFFSET(x) ((x) << 2) # define PACKET3_QUERY_STATUS_ENG_SEL(x) ((x) << 25) +#define PACKET3_RUN_CLEANER_SHADER_9_0 0xD7 +/* 1. header + * 2. RESERVED [31:0] + */ + #define PACKET3_RUN_CLEANER_SHADER 0xD2 /* 1. header * 2. RESERVED [31:0] -- 2.54.0