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| author | Christian König <christian.koenig@amd.com> | 2019-09-16 18:33:28 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-09-16 18:42:55 +0300 |
| commit | 47ca7efa4c13f8698cddc0b9c96938e7febe9258 (patch) | |
| tree | 6257aaec6ec041f11a17f15e2b5a5fd96d5d2113 /drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c | |
| parent | a2cf324785a6dea0a221f5cdfb945b59d2153eeb (diff) | |
| download | linux-47ca7efa4c13f8698cddc0b9c96938e7febe9258.tar.xz | |
drm/amdgpu: allow direct submission in the VM backends v2
This allows us to update page tables directly while in a page fault.
v2: use direct/delayed entities and still wait for moves
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c index 9aecfb370c59..1520003fe3da 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c @@ -68,17 +68,19 @@ static int amdgpu_vm_sdma_prepare(struct amdgpu_vm_update_params *p, if (r) return r; + p->num_dw_left = ndw; + + /* Wait for moves to be completed */ r = amdgpu_sync_fence(p->adev, &p->job->sync, exclusive, false); if (r) return r; - r = amdgpu_sync_resv(p->adev, &p->job->sync, root->tbo.base.resv, - owner, false); - if (r) - return r; + /* Don't wait for any submissions during page fault handling */ + if (p->direct) + return 0; - p->num_dw_left = ndw; - return 0; + return amdgpu_sync_resv(p->adev, &p->job->sync, root->tbo.base.resv, + owner, false); } /** @@ -95,23 +97,23 @@ static int amdgpu_vm_sdma_commit(struct amdgpu_vm_update_params *p, { struct amdgpu_bo *root = p->vm->root.base.bo; struct amdgpu_ib *ib = p->job->ibs; + struct drm_sched_entity *entity; struct amdgpu_ring *ring; struct dma_fence *f; int r; - ring = container_of(p->vm->delayed.rq->sched, struct amdgpu_ring, - sched); + entity = p->direct ? &p->vm->direct : &p->vm->delayed; + ring = container_of(entity->rq->sched, struct amdgpu_ring, sched); WARN_ON(ib->length_dw == 0); amdgpu_ring_pad_ib(ring, ib); WARN_ON(ib->length_dw > p->num_dw_left); - r = amdgpu_job_submit(p->job, &p->vm->delayed, - AMDGPU_FENCE_OWNER_VM, &f); + r = amdgpu_job_submit(p->job, entity, AMDGPU_FENCE_OWNER_VM, &f); if (r) goto error; amdgpu_bo_fence(root, f, true); - if (fence) + if (fence && !p->direct) swap(*fence, f); dma_fence_put(f); return 0; @@ -121,7 +123,6 @@ error: return r; } - /** * amdgpu_vm_sdma_copy_ptes - copy the PTEs from mapping * |