[PATCH 07/18] drm/amdgpu: add shadow_entity for shadow page table updates

[Chunming Zhou]

Change-Id: Id1bcb6701f1663e409b8ebe533ea9f8e7194227b
Signed-off-by: Chunming Zhou <David1.Zhou at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h    |  3 ++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 11 ++++++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index f6df77f..7eb854a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -922,7 +922,8 @@ struct amdgpu_vm {
 
 	/* client id */
 	u64                     client_id;
-
+	/* Scheduler entity for shadow page table updates */
+	struct amd_sched_entity	shadow_entity;
 	struct fence            *shadow_sync_fence;
 };
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 3775e9b..f1a1add 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1577,11 +1577,17 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm)
 	ring_instance = atomic_inc_return(&adev->vm_manager.vm_pte_next_ring);
 	ring_instance %= adev->vm_manager.vm_pte_num_rings;
 	ring = adev->vm_manager.vm_pte_rings[ring_instance];
+	rq = &ring->sched.sched_rq[AMD_SCHED_PRIORITY_NORMAL];
+	r = amd_sched_entity_init(&ring->sched, &vm->shadow_entity,
+				  rq, amdgpu_sched_jobs);
+	if (r)
+		goto err;
+
 	rq = &ring->sched.sched_rq[AMD_SCHED_PRIORITY_KERNEL];
 	r = amd_sched_entity_init(&ring->sched, &vm->entity,
 				  rq, amdgpu_sched_jobs);
 	if (r)
-		goto err;
+		goto err1;
 
 	vm->page_directory_fence = NULL;
 
@@ -1613,6 +1619,8 @@ error_free_page_directory:
 error_free_sched_entity:
 	amd_sched_entity_fini(&ring->sched, &vm->entity);
 
+err1:
+	amd_sched_entity_fini(&ring->sched, &vm->shadow_entity);
 err:
 	drm_free_large(vm->page_tables);
 
@@ -1633,6 +1641,7 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
 	struct amdgpu_bo_va_mapping *mapping, *tmp;
 	int i;
 
+	amd_sched_entity_fini(vm->shadow_entity.sched, &vm->shadow_entity);
 	amd_sched_entity_fini(vm->entity.sched, &vm->entity);
 
 	if (!RB_EMPTY_ROOT(&vm->va)) {
-- 
1.9.1