drm/amdgpu: add reserved vmid field in vm struct v2

v2: rename dedicated_vmid to reserved_vmid
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c

@@ -2147,10 +2147,12 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm)
 	unsigned ring_instance;
 	struct amdgpu_ring *ring;
 	struct amd_sched_rq *rq;
-	int r;
+	int r, i;
 
 	vm->va = RB_ROOT;
 	vm->client_id = atomic64_inc_return(&adev->vm_manager.client_counter);
+	for (i = 0; i < AMDGPU_MAX_VMHUBS; i++)
+		vm->reserved_vmid[i] = NULL;
 	spin_lock_init(&vm->status_lock);
 	INIT_LIST_HEAD(&vm->invalidated);
 	INIT_LIST_HEAD(&vm->cleared);
@@ -2235,6 +2237,7 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
 {
 	struct amdgpu_bo_va_mapping *mapping, *tmp;
 	bool prt_fini_needed = !!adev->gart.gart_funcs->set_prt;
+	int i;
 
 	amd_sched_entity_fini(vm->entity.sched, &vm->entity);
 
@@ -2258,6 +2261,18 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
 
 	amdgpu_vm_free_levels(&vm->root);
 	dma_fence_put(vm->last_dir_update);
+	for (i = 0; i < AMDGPU_MAX_VMHUBS; i++) {
+		struct amdgpu_vm_id_manager *id_mgr =
+			&adev->vm_manager.id_mgr[i];
+
+		mutex_lock(&id_mgr->lock);
+		if (vm->reserved_vmid[i]) {
+			list_add(&vm->reserved_vmid[i]->list,
+				 &id_mgr->ids_lru);
+			vm->reserved_vmid[i] = NULL;
+		}
+		mutex_unlock(&id_mgr->lock);
+	}
 }
 
 /**

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h

@@ -123,6 +123,8 @@ struct amdgpu_vm {
 
 	/* client id */
 	u64                     client_id;
+	/* dedicated to vm */
+	struct amdgpu_vm_id	*reserved_vmid[AMDGPU_MAX_VMHUBS];
 	/* each VM will map on CSA */
 	struct amdgpu_bo_va *csa_bo_va;
 };