osfmk/vm/device_vm.c

144 	device_pager_t	device_object;
146 	device_object = device_object_create();
147 	if (device_object == DEVICE_PAGER_NULL)
150 	device_object->device_handle = device_handle;
151 	device_object->size = size;
152 	device_object->flags = flags;
154 	return((memory_object_t)device_object);
167 	device_pager_t	device_object;
172 	device_object = device_pager_lookup(device);
173 	if(device_object == DEVICE_PAGER_NULL)
177 					device_object->control_handle);
212 	device_pager_t	device_object;
214 	device_object = (device_pager_t)name;
215 	assert(device_object->pager_ops == &device_pager_ops);
216 	return (device_object);
228 	device_pager_t   device_object;
238 	device_object = device_pager_lookup(mem_obj);
241 	device_object->control_handle = control;
250 	if(device_object->flags & DEVICE_PAGER_CONTIGUOUS)
252 	if(device_object->flags & DEVICE_PAGER_NOPHYSCACHE)
255 	vm_object->wimg_bits = device_object->flags & VM_WIMG_MASK;
291 	device_pager_t	device_object;
293 	device_object = device_pager_lookup(mem_obj);
294 	if (device_object == DEVICE_PAGER_NULL)
297 	return device_data_action(device_object->device_handle,
298 				  (ipc_port_t) device_object,
314 	device_pager_t	device_object;
316 	device_object = device_pager_lookup(mem_obj);
318 	if (device_object == DEVICE_PAGER_NULL)
321 	device_data_action(device_object->device_handle,
322 			   (ipc_port_t) device_object,
334 	device_pager_t		device_object;
337 	device_object = device_pager_lookup(mem_obj);
338 	new_ref_count = hw_atomic_add(&device_object->ref_count, 1);
349 	device_pager_t		device_object;
352 	device_object = device_pager_lookup(mem_obj);
354 	if (hw_atomic_sub(&device_object->ref_count, 1) == 0) {
355 		if (device_object->device_handle != (device_port_t) NULL) {
356 			device_close(device_object->device_handle);
357 			device_object->device_handle = (device_port_t) NULL;
359 		device_control = device_object->control_handle;
369 			device_object->control_handle =
373 		zfree(device_pager_zone, device_object);
417 	device_pager_t	device_object;
419 	device_object = device_pager_lookup(mem_obj);
422 			device_object->control_handle, offset, length);
453 	register device_pager_t  device_object;
455 	device_object = (struct device_pager *) zalloc(device_pager_zone);
456 	if (device_object == DEVICE_PAGER_NULL)
458 	device_object->pager_ops = &device_pager_ops;
459 	device_object->pager_ikot = IKOT_MEMORY_OBJECT;
460 	device_object->ref_count = 1;
461 	device_object->control_handle = MEMORY_OBJECT_CONTROL_NULL;
464 	return(device_object);