19 static int fsm_io_helper(struct vfio_ccw_private *private)  in fsm_io_helper()  argument
28 	sch = private->sch;  in fsm_io_helper()
32 	orb = cp_get_orb(&private->cp, (u32)(addr_t)sch, sch->lpm);  in fsm_io_helper()
53 		private->state = VFIO_CCW_STATE_CP_PENDING;  in fsm_io_helper()
81 static int fsm_do_halt(struct vfio_ccw_private *private)  in fsm_do_halt()  argument
88 	sch = private->sch;  in fsm_do_halt()
122 static int fsm_do_clear(struct vfio_ccw_private *private)  in fsm_do_clear()  argument
129 	sch = private->sch;  in fsm_do_clear()
160 static void fsm_notoper(struct vfio_ccw_private *private,  in fsm_notoper()  argument
163 	struct subchannel *sch = private->sch;  in fsm_notoper()
170 			   private->state);  in fsm_notoper()
177 	private->state = VFIO_CCW_STATE_NOT_OPER;  in fsm_notoper()
180 	cp_free(&private->cp);  in fsm_notoper()
186 static void fsm_nop(struct vfio_ccw_private *private,  in fsm_nop()  argument
191 static void fsm_io_error(struct vfio_ccw_private *private,  in fsm_io_error()  argument
194 	pr_err("vfio-ccw: FSM: I/O request from state:%d\n", private->state);  in fsm_io_error()
195 	private->io_region->ret_code = -EIO;  in fsm_io_error()
198 static void fsm_io_busy(struct vfio_ccw_private *private,  in fsm_io_busy()  argument
201 	private->io_region->ret_code = -EBUSY;  in fsm_io_busy()
204 static void fsm_io_retry(struct vfio_ccw_private *private,  in fsm_io_retry()  argument
207 	private->io_region->ret_code = -EAGAIN;  in fsm_io_retry()
210 static void fsm_async_error(struct vfio_ccw_private *private,  in fsm_async_error()  argument
213 	struct ccw_cmd_region *cmd_region = private->cmd_region;  in fsm_async_error()
218 	       "<unknown>", private->state);  in fsm_async_error()
222 static void fsm_async_retry(struct vfio_ccw_private *private,  in fsm_async_retry()  argument
225 	private->cmd_region->ret_code = -EAGAIN;  in fsm_async_retry()
228 static void fsm_disabled_irq(struct vfio_ccw_private *private,  in fsm_disabled_irq()  argument
231 	struct subchannel *sch = private->sch;  in fsm_disabled_irq()
247 static void fsm_io_request(struct vfio_ccw_private *private,  in fsm_io_request()  argument
251 	union scsw *scsw = &private->scsw;  in fsm_io_request()
252 	struct ccw_io_region *io_region = private->io_region;  in fsm_io_request()
254 	struct subchannel_id schid = get_schid(private);  in fsm_io_request()
256 	private->state = VFIO_CCW_STATE_CP_PROCESSING;  in fsm_io_request()
272 		io_region->ret_code = cp_init(&private->cp, orb);  in fsm_io_request()
283 		io_region->ret_code = cp_prefetch(&private->cp);  in fsm_io_request()
291 			cp_free(&private->cp);  in fsm_io_request()
296 		io_region->ret_code = fsm_io_helper(private);  in fsm_io_request()
304 			cp_free(&private->cp);  in fsm_io_request()
327 	private->state = VFIO_CCW_STATE_IDLE;  in fsm_io_request()
335 static void fsm_async_request(struct vfio_ccw_private *private,  in fsm_async_request()  argument
338 	struct ccw_cmd_region *cmd_region = private->cmd_region;  in fsm_async_request()
342 		cmd_region->ret_code = fsm_do_halt(private);  in fsm_async_request()
345 		cmd_region->ret_code = fsm_do_clear(private);  in fsm_async_request()
352 	trace_vfio_ccw_fsm_async_request(get_schid(private),  in fsm_async_request()
360 static void fsm_irq(struct vfio_ccw_private *private,  in fsm_irq()  argument
366 	VFIO_CCW_TRACE_EVENT(6, dev_name(&private->sch->dev));  in fsm_irq()
368 	memcpy(&private->irb, irb, sizeof(*irb));  in fsm_irq()
370 	queue_work(vfio_ccw_work_q, &private->io_work);  in fsm_irq()
372 	if (private->completion)  in fsm_irq()
373 		complete(private->completion);  in fsm_irq()
376 static void fsm_open(struct vfio_ccw_private *private,  in fsm_open()  argument
379 	struct subchannel *sch = private->sch;  in fsm_open()
388 	private->state = VFIO_CCW_STATE_IDLE;  in fsm_open()
394 	vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_NOT_OPER);  in fsm_open()
397 static void fsm_close(struct vfio_ccw_private *private,  in fsm_close()  argument
400 	struct subchannel *sch = private->sch;  in fsm_close()
414 	private->state = VFIO_CCW_STATE_STANDBY;  in fsm_close()
416 	cp_free(&private->cp);  in fsm_close()
421 	vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_NOT_OPER);  in fsm_close()