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 <[email protected]> Cc: Alex Deucher <[email protected]> Signed-off-by: Alex Deucher <[email protected]> Signed-off-by: Srinivasan Shanmugam <[email protected]> Suggested-by: Christian König <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h index c7f15edeb367..f93f51002201 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h @@ -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 { diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index bcb729094521..71ef3308be92 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -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; } -- 2.46.0
