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drm/amdgpu: Emit cleaner shader at end of IB submission

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This commit introduces the emission of a cleaner shader at the end of
the IB submission process. This is achieved by adding a new function
pointer, `emit_cleaner_shader`, to the `amdgpu_ring_funcs` structure. If
the `emit_cleaner_shader` function is set in the ring functions, it is
called during the VM flush process.

The cleaner shader is only emitted if the `enable_cleaner_shader` flag
is set in the `amdgpu_device` structure. This allows the cleaner shader
emission to be controlled on a per-device basis.

By emitting a cleaner shader at the end of the IB submission, we can
ensure that the VM state is properly cleaned up after each submission.

Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Suggested-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Alex Deucher 2024-03-12 14:22:26 -04:00
parent aec773a1fb
commit ee7a846ea2
2 changed files with 6 additions and 0 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
View File

@ -236,6 +236,7 @@ struct amdgpu_ring_funcs {
void (*patch_ce)(struct amdgpu_ring *ring, unsigned offset);
void (*patch_de)(struct amdgpu_ring *ring, unsigned offset);
int (*reset)(struct amdgpu_ring *ring, unsigned int vmid);
void (*emit_cleaner_shader)(struct amdgpu_ring *ring);
};
struct amdgpu_ring {

5
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
View File

@ -681,6 +681,10 @@ int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job,
pasid_mapping_needed &= adev->gmc.gmc_funcs->emit_pasid_mapping &&
ring->funcs->emit_wreg;
if (adev->gfx.enable_cleaner_shader &&
ring->funcs->emit_cleaner_shader)
ring->funcs->emit_cleaner_shader(ring);
if (!vm_flush_needed && !gds_switch_needed && !need_pipe_sync)
return 0;
@ -742,6 +746,7 @@ int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job,
amdgpu_ring_emit_switch_buffer(ring);
amdgpu_ring_emit_switch_buffer(ring);
}
amdgpu_ring_ib_end(ring);
return 0;
}