From db36632ea51e8b02dd637d291c755899b20a5a31 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 27 Aug 2025 11:34:14 -0400 Subject: drm/amdgpu: clean up and unify hw fence handling MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Decouple the amdgpu fence from the amdgpu_job structure. This lets us clean up the separate fence ops for the embedded fence and other fences. This also allows us to allocate the vm fence up front when we allocate the job. v2: Additional cleanup suggested by Christian v3: Additional cleanups suggested by Christian v4: Additional cleanups suggested by David and vm fence fix v5: cast seqno (David) Cc: David.Wu3@amd.com Cc: christian.koenig@amd.com Tested-by: David (Ming Qiang) Wu Reviewed-by: David (Ming Qiang) Wu Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c index 7d9bcb72e8dd..39229ece83f8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c @@ -149,17 +149,19 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned int num_ibs, if (job) { vm = job->vm; fence_ctx = job->base.s_fence ? - job->base.s_fence->scheduled.context : 0; + job->base.s_fence->finished.context : 0; shadow_va = job->shadow_va; csa_va = job->csa_va; gds_va = job->gds_va; init_shadow = job->init_shadow; - af = &job->hw_fence; + af = job->hw_fence; /* Save the context of the job for reset handling. * The driver needs this so it can skip the ring * contents for guilty contexts. */ - af->context = job->base.s_fence ? job->base.s_fence->finished.context : 0; + af->context = fence_ctx; + /* the vm fence is also part of the job's context */ + job->hw_vm_fence->context = fence_ctx; } else { vm = NULL; fence_ctx = 0; @@ -167,7 +169,9 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned int num_ibs, csa_va = 0; gds_va = 0; init_shadow = false; - af = NULL; + af = kzalloc(sizeof(*af), GFP_ATOMIC); + if (!af) + return -ENOMEM; } if (!ring->sched.ready) { @@ -289,7 +293,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned int num_ibs, amdgpu_ring_init_cond_exec(ring, ring->cond_exe_gpu_addr); } - r = amdgpu_fence_emit(ring, f, af, fence_flags); + r = amdgpu_fence_emit(ring, af, fence_flags); if (r) { dev_err(adev->dev, "failed to emit fence (%d)\n", r); if (job && job->vmid) @@ -297,6 +301,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned int num_ibs, amdgpu_ring_undo(ring); return r; } + *f = &af->base; if (ring->funcs->insert_end) ring->funcs->insert_end(ring); @@ -317,7 +322,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned int num_ibs, * fence so we know what rings contents to backup * after we reset the queue. */ - amdgpu_fence_save_wptr(*f); + amdgpu_fence_save_wptr(af); amdgpu_ring_ib_end(ring); amdgpu_ring_commit(ring); -- cgit v1.2.3