drm/amdgpu: Add helper to wait for BO fences using a sync object

Creates a temporary sync object to wait for the BO reservation. This
generalizes amdgpu_vm_wait_pd.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 3 insertions, 27 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 75481cf3348f..3f33286c3cd5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1332,31 +1332,6 @@ static void amdgpu_vm_cpu_set_ptes(struct amdgpu_pte_update_params *params,
         }
 }
 
-
-/**
- * amdgpu_vm_wait_pd - Wait for PT BOs to be free.
- *
- * @adev: amdgpu_device pointer
- * @vm: related vm
- * @owner: fence owner
- *
- * Returns:
- * 0 on success, errno otherwise.
- */
-static int amdgpu_vm_wait_pd(struct amdgpu_device *adev, struct amdgpu_vm *vm,
-                             void *owner)
-{
-        struct amdgpu_sync sync;
-        int r;
-
-        amdgpu_sync_create(&sync);
-        amdgpu_sync_resv(adev, &sync, vm->root.base.bo->tbo.resv, owner, false);
-        r = amdgpu_sync_wait(&sync, true);
-        amdgpu_sync_free(&sync);
-
-        return r;
-}
-
 /**
  * amdgpu_vm_update_func - helper to call update function
  *
@@ -1451,7 +1426,8 @@ restart:
         params.adev = adev;
 
         if (vm->use_cpu_for_update) {
-                r = amdgpu_vm_wait_pd(adev, vm, AMDGPU_FENCE_OWNER_VM);
+                r = amdgpu_bo_sync_wait(vm->root.base.bo,
+                                        AMDGPU_FENCE_OWNER_VM, true);
                 if (unlikely(r))
                         return r;
 
@@ -1784,7 +1760,7 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
                 /* Wait for PT BOs to be idle. PTs share the same resv. object
                  * as the root PD BO
                  */
-                r = amdgpu_vm_wait_pd(adev, vm, owner);
+                r = amdgpu_bo_sync_wait(vm->root.base.bo, owner, true);
                 if (unlikely(r))
                         return r;