drm/amdgpu/gfx11: Add Cleaner Shader Support for GFX11.5 GPUs

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>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
index b9f6d89dafb2ec929814092cfb34d1a98b2db733..d8772cd6db6334f2c973153308ec3b6d84530a25 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -1626,6 +1626,20 @@ 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;