From: Christian König Date: Mon, 6 Jul 2015 20:06:40 +0000 (+0200) Subject: drm/amdgpu: deal with foreign fences in amdgpu_sync X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=91e1a5207edec9e4f888e44478a9a254186e0ba8;p=linux-beck.git drm/amdgpu: deal with foreign fences in amdgpu_sync This also requires some error handling from the callers of that function. Signed-off-by: Christian König Reviewed-by: Jammy Zhou Reviewed-by: Chunming Zhou --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 069cc28941ba..70e783a849ed 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -699,8 +699,8 @@ struct amdgpu_sync { }; void amdgpu_sync_create(struct amdgpu_sync *sync); -void amdgpu_sync_fence(struct amdgpu_sync *sync, - struct amdgpu_fence *fence); +int amdgpu_sync_fence(struct amdgpu_device *adev, struct amdgpu_sync *sync, + struct fence *f); int amdgpu_sync_resv(struct amdgpu_device *adev, struct amdgpu_sync *sync, struct reservation_object *resv, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c index 1f040d85ac47..53e6a10fe9f9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -482,6 +482,8 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p, if (p->bo_list) { for (i = 0; i < p->bo_list->num_entries; i++) { + struct fence *f; + /* ignore duplicates */ bo = p->bo_list->array[i].robj; if (!bo) @@ -495,7 +497,10 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p, if (r) return r; - amdgpu_sync_fence(&p->ibs[0].sync, bo_va->last_pt_update); + f = &bo_va->last_pt_update->base; + r = amdgpu_sync_fence(adev, &p->ibs[0].sync, f); + if (r) + return r; } } @@ -715,9 +720,12 @@ static int amdgpu_cs_dependencies(struct amdgpu_device *adev, return r; } - amdgpu_sync_fence(&ib->sync, fence); + r = amdgpu_sync_fence(adev, &ib->sync, &fence->base); amdgpu_fence_unref(&fence); amdgpu_ctx_put(ctx); + + if (r) + return r; } } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c index bc0fac618a3f..2722815eddbb 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c @@ -167,7 +167,11 @@ int amdgpu_ib_schedule(struct amdgpu_device *adev, unsigned num_ibs, /* grab a vm id if necessary */ struct amdgpu_fence *vm_id_fence = NULL; vm_id_fence = amdgpu_vm_grab_id(ibs->ring, ibs->vm); - amdgpu_sync_fence(&ibs->sync, vm_id_fence); + r = amdgpu_sync_fence(adev, &ibs->sync, &vm_id_fence->base); + if (r) { + amdgpu_ring_unlock_undo(ring); + return r; + } } r = amdgpu_sync_rings(&ibs->sync, ring); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c index 21accbdd0a1a..9c292cf770f4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c @@ -53,20 +53,24 @@ void amdgpu_sync_create(struct amdgpu_sync *sync) } /** - * amdgpu_sync_fence - use the semaphore to sync to a fence + * amdgpu_sync_fence - remember to sync to this fence * * @sync: sync object to add fence to * @fence: fence to sync to * - * Sync to the fence using the semaphore objects */ -void amdgpu_sync_fence(struct amdgpu_sync *sync, - struct amdgpu_fence *fence) +int amdgpu_sync_fence(struct amdgpu_device *adev, struct amdgpu_sync *sync, + struct fence *f) { + struct amdgpu_fence *fence; struct amdgpu_fence *other; - if (!fence) - return; + if (!f) + return 0; + + fence = to_amdgpu_fence(f); + if (!fence || fence->ring->adev != adev) + return fence_wait(f, true); other = sync->sync_to[fence->ring->idx]; sync->sync_to[fence->ring->idx] = amdgpu_fence_ref( @@ -79,6 +83,8 @@ void amdgpu_sync_fence(struct amdgpu_sync *sync, amdgpu_fence_later(fence, other)); amdgpu_fence_unref(&other); } + + return 0; } /** @@ -106,11 +112,7 @@ int amdgpu_sync_resv(struct amdgpu_device *adev, /* always sync to the exclusive fence */ f = reservation_object_get_excl(resv); - fence = f ? to_amdgpu_fence(f) : NULL; - if (fence && fence->ring->adev == adev) - amdgpu_sync_fence(sync, fence); - else if (f) - r = fence_wait(f, true); + r = amdgpu_sync_fence(adev, sync, f); flist = reservation_object_get_list(resv); if (!flist || r) @@ -120,15 +122,14 @@ int amdgpu_sync_resv(struct amdgpu_device *adev, f = rcu_dereference_protected(flist->shared[i], reservation_object_held(resv)); fence = f ? to_amdgpu_fence(f) : NULL; - if (fence && fence->ring->adev == adev) { - if (fence->owner != owner || - fence->owner == AMDGPU_FENCE_OWNER_UNDEFINED) - amdgpu_sync_fence(sync, fence); - } else if (f) { - r = fence_wait(f, true); - if (r) - break; - } + if (fence && fence->ring->adev == adev && + fence->owner == owner && + fence->owner != AMDGPU_FENCE_OWNER_UNDEFINED) + continue; + + r = amdgpu_sync_fence(adev, sync, f); + if (r) + break; } return r; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 9a4e3b63f1cb..0c8c9904d880 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -732,7 +732,9 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev, for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { struct amdgpu_fence *f = vm->ids[i].last_id_use; - amdgpu_sync_fence(&ib.sync, f); + r = amdgpu_sync_fence(adev, &ib.sync, &f->base); + if (r) + return r; } } @@ -861,7 +863,7 @@ int amdgpu_vm_clear_invalids(struct amdgpu_device *adev, struct amdgpu_vm *vm, struct amdgpu_sync *sync) { struct amdgpu_bo_va *bo_va = NULL; - int r; + int r = 0; spin_lock(&vm->status_lock); while (!list_empty(&vm->invalidated)) { @@ -878,8 +880,9 @@ int amdgpu_vm_clear_invalids(struct amdgpu_device *adev, spin_unlock(&vm->status_lock); if (bo_va) - amdgpu_sync_fence(sync, bo_va->last_pt_update); - return 0; + r = amdgpu_sync_fence(adev, sync, &bo_va->last_pt_update->base); + + return r; } /**