From 5f6c5500d094ebee9bc6bf065aa74d250a67db46 Mon Sep 17 00:00:00 2001
From: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Date: Thu, 20 Mar 2025 21:31:35 +0530
Subject: [PATCH] drm/amdgpu/gfx11: Add Cleaner Shader Support for GFX11.5 GPUs
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Enable the cleaner shader for GFX11.5.0/11.5.1 GPUs to provide data
isolation between GPU workloads. The cleaner shader is responsible for
clearing the Local Data Store (LDS), Vector General Purpose Registers
(VGPRs), and Scalar General Purpose Registers (SGPRs), which helps
prevent data leakage and ensures accurate computation results.
This update extends cleaner shader support to GFX11.5.0/11.5.1 GPUs,
previously available for GFX11.0.3. It enhances security by clearing GPU
memory between processes and maintains a consistent GPU state across KGD
and KFD workloads.
Cc: Mario Sopena-Novales <mario.novales@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
index 8261308fc1f23..e0a9b10d645c6 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -1632,6 +1632,20 @@ static int gfx_v11_0_sw_init(struct amdgpu_ip_block *ip_block)
}
}
break;
+ case IP_VERSION(11, 5, 0):
+ case IP_VERSION(11, 5, 1):
+ adev->gfx.cleaner_shader_ptr = gfx_11_0_3_cleaner_shader_hex;
+ adev->gfx.cleaner_shader_size = sizeof(gfx_11_0_3_cleaner_shader_hex);
+ if (adev->gfx.mec_fw_version >= 26 &&
+ adev->mes.fw_version[0] >= 114) {
+ adev->gfx.enable_cleaner_shader = true;
+ r = amdgpu_gfx_cleaner_shader_sw_init(adev, adev->gfx.cleaner_shader_size);
+ if (r) {
+ adev->gfx.enable_cleaner_shader = false;
+ dev_err(adev->dev, "Failed to initialize cleaner shader\n");
+ }
+ }
+ break;
default:
adev->gfx.enable_cleaner_shader = false;
break;
--
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