71 	struct subchannel *sch = to_subchannel(dev);  in call_fn_known_sch()  local
76 		idset_sch_del(cb->set, sch->schid);  in call_fn_known_sch()
78 		rc = cb->fn_known_sch(sch, cb->data);  in call_fn_known_sch()
95 	struct subchannel *sch;  in call_fn_all_sch()  local
98 	sch = get_subchannel_by_schid(schid);  in call_fn_all_sch()
99 	if (sch) {  in call_fn_all_sch()
101 			rc = cb->fn_known_sch(sch, cb->data);  in call_fn_all_sch()
102 		put_device(&sch->dev);  in call_fn_all_sch()
151 static void css_sch_create_locks(struct subchannel *sch)  in css_sch_create_locks()  argument
153 	spin_lock_init(&sch->lock);  in css_sch_create_locks()
154 	mutex_init(&sch->reg_mutex);  in css_sch_create_locks()
159 	struct subchannel *sch = to_subchannel(dev);  in css_subchannel_release()  local
161 	sch->config.intparm = 0;  in css_subchannel_release()
162 	cio_commit_config(sch);  in css_subchannel_release()
163 	kfree(sch->driver_override);  in css_subchannel_release()
164 	kfree(sch);  in css_subchannel_release()
200 	struct subchannel *sch;  in css_alloc_subchannel()  local
207 	sch = kzalloc(sizeof(*sch), GFP_KERNEL | GFP_DMA);  in css_alloc_subchannel()
208 	if (!sch)  in css_alloc_subchannel()
211 	sch->schid = schid;  in css_alloc_subchannel()
212 	sch->schib = *schib;  in css_alloc_subchannel()
213 	sch->st = schib->pmcw.st;  in css_alloc_subchannel()
215 	css_sch_create_locks(sch);  in css_alloc_subchannel()
217 	INIT_WORK(&sch->todo_work, css_sch_todo);  in css_alloc_subchannel()
218 	sch->dev.release = &css_subchannel_release;  in css_alloc_subchannel()
219 	sch->dev.dma_mask = &sch->dma_mask;  in css_alloc_subchannel()
220 	device_initialize(&sch->dev);  in css_alloc_subchannel()
225 	ret = dma_set_coherent_mask(&sch->dev, DMA_BIT_MASK(31));  in css_alloc_subchannel()
232 	ret = dma_set_mask(&sch->dev, DMA_BIT_MASK(64));  in css_alloc_subchannel()
236 	return sch;  in css_alloc_subchannel()
239 	kfree(sch);  in css_alloc_subchannel()
243 static int css_sch_device_register(struct subchannel *sch)  in css_sch_device_register()  argument
247 	mutex_lock(&sch->reg_mutex);  in css_sch_device_register()
248 	dev_set_name(&sch->dev, "0.%x.%04x", sch->schid.ssid,  in css_sch_device_register()
249 		     sch->schid.sch_no);  in css_sch_device_register()
250 	ret = device_add(&sch->dev);  in css_sch_device_register()
251 	mutex_unlock(&sch->reg_mutex);  in css_sch_device_register()
257  * @sch: subchannel to be unregistered
259 void css_sch_device_unregister(struct subchannel *sch)  in css_sch_device_unregister()  argument
261 	mutex_lock(&sch->reg_mutex);  in css_sch_device_unregister()
262 	if (device_is_registered(&sch->dev))  in css_sch_device_unregister()
263 		device_unregister(&sch->dev);  in css_sch_device_unregister()
264 	mutex_unlock(&sch->reg_mutex);  in css_sch_device_unregister()
296 void css_update_ssd_info(struct subchannel *sch)  in css_update_ssd_info()  argument
300 	ret = chsc_get_ssd_info(sch->schid, &sch->ssd_info);  in css_update_ssd_info()
302 		ssd_from_pmcw(&sch->ssd_info, &sch->schib.pmcw);  in css_update_ssd_info()
304 	ssd_register_chpids(&sch->ssd_info);  in css_update_ssd_info()
310 	struct subchannel *sch = to_subchannel(dev);  in type_show()  local
312 	return sysfs_emit(buf, "%01x\n", sch->st);  in type_show()
320 	struct subchannel *sch = to_subchannel(dev);  in modalias_show()  local
322 	return sysfs_emit(buf, "css:t%01X\n", sch->st);  in modalias_show()
331 	struct subchannel *sch = to_subchannel(dev);  in driver_override_store()  local
334 	ret = driver_set_override(dev, &sch->driver_override, buf, count);  in driver_override_store()
344 	struct subchannel *sch = to_subchannel(dev);  in driver_override_show()  local
348 	len = sysfs_emit(buf, "%s\n", sch->driver_override);  in driver_override_show()
374 	struct subchannel *sch = to_subchannel(dev);  in chpids_show()  local
375 	struct chsc_ssd_info *ssd = &sch->ssd_info;  in chpids_show()
396 	struct subchannel *sch = to_subchannel(dev);  in pimpampom_show()  local
397 	struct pmcw *pmcw = &sch->schib.pmcw;  in pimpampom_show()
408 	struct subchannel *sch = to_subchannel(dev);  in dev_busid_show()  local
409 	struct pmcw *pmcw = &sch->schib.pmcw;  in dev_busid_show()
413 		return sysfs_emit(buf, "0.%x.%04x\n", sch->schid.ssid,  in dev_busid_show()
432 int css_register_subchannel(struct subchannel *sch)  in css_register_subchannel()  argument
437 	sch->dev.parent = &channel_subsystems[0]->device;  in css_register_subchannel()
438 	sch->dev.bus = &css_bus_type;  in css_register_subchannel()
439 	sch->dev.groups = default_subch_attr_groups;  in css_register_subchannel()
441 	if (sch->st == SUBCHANNEL_TYPE_IO)  in css_register_subchannel()
442 		sch->dev.type = &io_subchannel_type;  in css_register_subchannel()
444 	css_update_ssd_info(sch);  in css_register_subchannel()
446 	ret = css_sch_device_register(sch);  in css_register_subchannel()
448 		CIO_MSG_EVENT(0, "Could not register sch 0.%x.%04x: %d\n",  in css_register_subchannel()
449 			      sch->schid.ssid, sch->schid.sch_no, ret);  in css_register_subchannel()
457 	struct subchannel *sch;  in css_probe_device()  local
460 	sch = css_alloc_subchannel(schid, schib);  in css_probe_device()
461 	if (IS_ERR(sch))  in css_probe_device()
462 		return PTR_ERR(sch);  in css_probe_device()
464 	ret = css_register_subchannel(sch);  in css_probe_device()
466 		put_device(&sch->dev);  in css_probe_device()
474 	struct subchannel *sch;  in check_subchannel()  local
477 	sch = to_subchannel(dev);  in check_subchannel()
478 	return schid_equal(&sch->schid, schid);  in check_subchannel()
528 static int css_evaluate_known_subchannel(struct subchannel *sch, int slow)  in css_evaluate_known_subchannel()  argument
532 	if (sch->driver) {  in css_evaluate_known_subchannel()
533 		if (sch->driver->sch_event)  in css_evaluate_known_subchannel()
534 			ret = sch->driver->sch_event(sch, slow);  in css_evaluate_known_subchannel()
536 			dev_dbg(&sch->dev,  in css_evaluate_known_subchannel()
541 		CIO_MSG_EVENT(2, "eval: sch 0.%x.%04x, rc=%d\n",  in css_evaluate_known_subchannel()
542 			      sch->schid.ssid, sch->schid.sch_no, ret);  in css_evaluate_known_subchannel()
549 	struct subchannel *sch;  in css_evaluate_subchannel()  local
552 	sch = get_subchannel_by_schid(schid);  in css_evaluate_subchannel()
553 	if (sch) {  in css_evaluate_subchannel()
554 		ret = css_evaluate_known_subchannel(sch, slow);  in css_evaluate_subchannel()
555 		put_device(&sch->dev);  in css_evaluate_subchannel()
564  * @sch: subchannel
571 void css_sched_sch_todo(struct subchannel *sch, enum sch_todo todo)  in css_sched_sch_todo()  argument
573 	CIO_MSG_EVENT(4, "sch_todo: sched sch=0.%x.%04x todo=%d\n",  in css_sched_sch_todo()
574 		      sch->schid.ssid, sch->schid.sch_no, todo);  in css_sched_sch_todo()
575 	if (sch->todo >= todo)  in css_sched_sch_todo()
578 	if (!get_device(&sch->dev))  in css_sched_sch_todo()
580 	sch->todo = todo;  in css_sched_sch_todo()
581 	if (!queue_work(cio_work_q, &sch->todo_work)) {  in css_sched_sch_todo()
583 		put_device(&sch->dev);  in css_sched_sch_todo()
590 	struct subchannel *sch;  in css_sch_todo()  local
594 	sch = container_of(work, struct subchannel, todo_work);  in css_sch_todo()
596 	spin_lock_irq(&sch->lock);  in css_sch_todo()
597 	todo = sch->todo;  in css_sch_todo()
598 	CIO_MSG_EVENT(4, "sch_todo: sch=0.%x.%04x, todo=%d\n", sch->schid.ssid,  in css_sch_todo()
599 		      sch->schid.sch_no, todo);  in css_sch_todo()
600 	sch->todo = SCH_TODO_NOTHING;  in css_sch_todo()
601 	spin_unlock_irq(&sch->lock);  in css_sch_todo()
607 		ret = css_evaluate_known_subchannel(sch, 1);  in css_sch_todo()
609 			spin_lock_irq(&sch->lock);  in css_sch_todo()
610 			css_sched_sch_todo(sch, todo);  in css_sch_todo()
611 			spin_unlock_irq(&sch->lock);  in css_sch_todo()
615 		css_sch_device_unregister(sch);  in css_sch_todo()
619 	put_device(&sch->dev);  in css_sch_todo()
638 static int slow_eval_known_fn(struct subchannel *sch, void *data)  in slow_eval_known_fn()  argument
644 	eval = idset_sch_contains(slow_subchannel_set, sch->schid);  in slow_eval_known_fn()
645 	idset_sch_del(slow_subchannel_set, sch->schid);  in slow_eval_known_fn()
648 		rc = css_evaluate_known_subchannel(sch, 1);  in slow_eval_known_fn()
650 			css_schedule_eval(sch->schid);  in slow_eval_known_fn()
737 	struct subchannel *sch = to_subchannel(dev);  in __unset_validpath()  local
738 	struct pmcw *pmcw = &sch->schib.pmcw;  in __unset_validpath()
745 	if (sch->st == SUBCHANNEL_TYPE_IO &&  in __unset_validpath()
746 	    (sch->opm & pmcw->pam & pmcw->pom))  in __unset_validpath()
747 		idset_sch_del(set, sch->schid);  in __unset_validpath()
755 	struct subchannel *sch = to_subchannel(dev);  in __unset_online()  local
757 	if (sch->st == SUBCHANNEL_TYPE_IO && sch->config.ena)  in __unset_online()
758 		idset_sch_del(set, sch->schid);  in __unset_online()
815 	struct subchannel *sch;  in css_process_crw()  local
836 		sch = get_subchannel_by_schid(mchk_schid);  in css_process_crw()
837 		if (sch) {  in css_process_crw()
838 			css_update_ssd_info(sch);  in css_process_crw()
839 			put_device(&sch->dev);  in css_process_crw()
1349 int sch_is_pseudo_sch(struct subchannel *sch)  in sch_is_pseudo_sch()  argument
1351 	if (!sch->dev.parent)  in sch_is_pseudo_sch()
1353 	return sch == to_css(sch->dev.parent)->pseudo_subchannel;  in sch_is_pseudo_sch()
1358 	struct subchannel *sch = to_subchannel(dev);  in css_bus_match()  local
1363 	if (sch->driver_override && strcmp(sch->driver_override, drv->name))  in css_bus_match()
1367 		if (sch->st == id->type)  in css_bus_match()
1376 	struct subchannel *sch;  in css_probe()  local
1379 	sch = to_subchannel(dev);  in css_probe()
1380 	sch->driver = to_cssdriver(dev->driver);  in css_probe()
1381 	ret = sch->driver->probe ? sch->driver->probe(sch) : 0;  in css_probe()
1383 		sch->driver = NULL;  in css_probe()
1389 	struct subchannel *sch;  in css_remove()  local
1391 	sch = to_subchannel(dev);  in css_remove()
1392 	if (sch->driver->remove)  in css_remove()
1393 		sch->driver->remove(sch);  in css_remove()
1394 	sch->driver = NULL;  in css_remove()
1399 	struct subchannel *sch;  in css_shutdown()  local
1401 	sch = to_subchannel(dev);  in css_shutdown()
1402 	if (sch->driver && sch->driver->shutdown)  in css_shutdown()
1403 		sch->driver->shutdown(sch);  in css_shutdown()
1408 	const struct subchannel *sch = to_subchannel(dev);  in css_uevent()  local
1411 	ret = add_uevent_var(env, "ST=%01X", sch->st);  in css_uevent()
1414 	ret = add_uevent_var(env, "MODALIAS=css:t%01X", sch->st);  in css_uevent()