70 	struct subchannel *sch = to_subchannel(dev);  in call_fn_known_sch()  local
75 		idset_sch_del(cb->set, sch->schid);  in call_fn_known_sch()
77 		rc = cb->fn_known_sch(sch, cb->data);  in call_fn_known_sch()
94 	struct subchannel *sch;  in call_fn_all_sch()  local
97 	sch = get_subchannel_by_schid(schid);  in call_fn_all_sch()
98 	if (sch) {  in call_fn_all_sch()
100 			rc = cb->fn_known_sch(sch, cb->data);  in call_fn_all_sch()
101 		put_device(&sch->dev);  in call_fn_all_sch()
150 static int css_sch_create_locks(struct subchannel *sch)  in css_sch_create_locks()  argument
152 	sch->lock = kmalloc(sizeof(*sch->lock), GFP_KERNEL);  in css_sch_create_locks()
153 	if (!sch->lock)  in css_sch_create_locks()
156 	spin_lock_init(sch->lock);  in css_sch_create_locks()
157 	mutex_init(&sch->reg_mutex);  in css_sch_create_locks()
164 	struct subchannel *sch = to_subchannel(dev);  in css_subchannel_release()  local
166 	sch->config.intparm = 0;  in css_subchannel_release()
167 	cio_commit_config(sch);  in css_subchannel_release()
168 	kfree(sch->lock);  in css_subchannel_release()
169 	kfree(sch);  in css_subchannel_release()
205 	struct subchannel *sch;  in css_alloc_subchannel()  local
212 	sch = kzalloc(sizeof(*sch), GFP_KERNEL | GFP_DMA);  in css_alloc_subchannel()
213 	if (!sch)  in css_alloc_subchannel()
216 	sch->schid = schid;  in css_alloc_subchannel()
217 	sch->schib = *schib;  in css_alloc_subchannel()
218 	sch->st = schib->pmcw.st;  in css_alloc_subchannel()
220 	ret = css_sch_create_locks(sch);  in css_alloc_subchannel()
224 	INIT_WORK(&sch->todo_work, css_sch_todo);  in css_alloc_subchannel()
225 	sch->dev.release = &css_subchannel_release;  in css_alloc_subchannel()
226 	device_initialize(&sch->dev);  in css_alloc_subchannel()
227 	return sch;  in css_alloc_subchannel()
230 	kfree(sch);  in css_alloc_subchannel()
234 static int css_sch_device_register(struct subchannel *sch)  in css_sch_device_register()  argument
238 	mutex_lock(&sch->reg_mutex);  in css_sch_device_register()
239 	dev_set_name(&sch->dev, "0.%x.%04x", sch->schid.ssid,  in css_sch_device_register()
240 		     sch->schid.sch_no);  in css_sch_device_register()
241 	ret = device_add(&sch->dev);  in css_sch_device_register()
242 	mutex_unlock(&sch->reg_mutex);  in css_sch_device_register()
250 void css_sch_device_unregister(struct subchannel *sch)  in css_sch_device_unregister()  argument
252 	mutex_lock(&sch->reg_mutex);  in css_sch_device_unregister()
253 	if (device_is_registered(&sch->dev))  in css_sch_device_unregister()
254 		device_unregister(&sch->dev);  in css_sch_device_unregister()
255 	mutex_unlock(&sch->reg_mutex);  in css_sch_device_unregister()
287 void css_update_ssd_info(struct subchannel *sch)  in css_update_ssd_info()  argument
291 	ret = chsc_get_ssd_info(sch->schid, &sch->ssd_info);  in css_update_ssd_info()
293 		ssd_from_pmcw(&sch->ssd_info, &sch->schib.pmcw);  in css_update_ssd_info()
295 	ssd_register_chpids(&sch->ssd_info);  in css_update_ssd_info()
301 	struct subchannel *sch = to_subchannel(dev);  in type_show()  local
303 	return sprintf(buf, "%01x\n", sch->st);  in type_show()
311 	struct subchannel *sch = to_subchannel(dev);  in modalias_show()  local
313 	return sprintf(buf, "css:t%01X\n", sch->st);  in modalias_show()
337 	struct subchannel *sch = to_subchannel(dev);  in chpids_show()  local
338 	struct chsc_ssd_info *ssd = &sch->ssd_info;  in chpids_show()
359 	struct subchannel *sch = to_subchannel(dev);  in pimpampom_show()  local
360 	struct pmcw *pmcw = &sch->schib.pmcw;  in pimpampom_show()
378 int css_register_subchannel(struct subchannel *sch)  in css_register_subchannel()  argument
383 	sch->dev.parent = &channel_subsystems[0]->device;  in css_register_subchannel()
384 	sch->dev.bus = &css_bus_type;  in css_register_subchannel()
385 	sch->dev.groups = default_subch_attr_groups;  in css_register_subchannel()
387 	if (sch->st == SUBCHANNEL_TYPE_IO)  in css_register_subchannel()
388 		sch->dev.type = &io_subchannel_type;  in css_register_subchannel()
399 	dev_set_uevent_suppress(&sch->dev, 1);  in css_register_subchannel()
400 	css_update_ssd_info(sch);  in css_register_subchannel()
402 	ret = css_sch_device_register(sch);  in css_register_subchannel()
405 			      sch->schid.ssid, sch->schid.sch_no, ret);  in css_register_subchannel()
408 	if (!sch->driver) {  in css_register_subchannel()
414 		dev_set_uevent_suppress(&sch->dev, 0);  in css_register_subchannel()
415 		kobject_uevent(&sch->dev.kobj, KOBJ_ADD);  in css_register_subchannel()
422 	struct subchannel *sch;  in css_probe_device()  local
425 	sch = css_alloc_subchannel(schid, schib);  in css_probe_device()
426 	if (IS_ERR(sch))  in css_probe_device()
427 		return PTR_ERR(sch);  in css_probe_device()
429 	ret = css_register_subchannel(sch);  in css_probe_device()
431 		put_device(&sch->dev);  in css_probe_device()
439 	struct subchannel *sch;  in check_subchannel()  local
442 	sch = to_subchannel(dev);  in check_subchannel()
443 	return schid_equal(&sch->schid, schid);  in check_subchannel()
493 static int css_evaluate_known_subchannel(struct subchannel *sch, int slow)  in css_evaluate_known_subchannel()  argument
497 	if (sch->driver) {  in css_evaluate_known_subchannel()
498 		if (sch->driver->sch_event)  in css_evaluate_known_subchannel()
499 			ret = sch->driver->sch_event(sch, slow);  in css_evaluate_known_subchannel()
501 			dev_dbg(&sch->dev,  in css_evaluate_known_subchannel()
507 			      sch->schid.ssid, sch->schid.sch_no, ret);  in css_evaluate_known_subchannel()
514 	struct subchannel *sch;  in css_evaluate_subchannel()  local
517 	sch = get_subchannel_by_schid(schid);  in css_evaluate_subchannel()
518 	if (sch) {  in css_evaluate_subchannel()
519 		ret = css_evaluate_known_subchannel(sch, slow);  in css_evaluate_subchannel()
520 		put_device(&sch->dev);  in css_evaluate_subchannel()
536 void css_sched_sch_todo(struct subchannel *sch, enum sch_todo todo)  in css_sched_sch_todo()  argument
539 		      sch->schid.ssid, sch->schid.sch_no, todo);  in css_sched_sch_todo()
540 	if (sch->todo >= todo)  in css_sched_sch_todo()
543 	if (!get_device(&sch->dev))  in css_sched_sch_todo()
545 	sch->todo = todo;  in css_sched_sch_todo()
546 	if (!queue_work(cio_work_q, &sch->todo_work)) {  in css_sched_sch_todo()
548 		put_device(&sch->dev);  in css_sched_sch_todo()
555 	struct subchannel *sch;  in css_sch_todo()  local
559 	sch = container_of(work, struct subchannel, todo_work);  in css_sch_todo()
561 	spin_lock_irq(sch->lock);  in css_sch_todo()
562 	todo = sch->todo;  in css_sch_todo()
563 	CIO_MSG_EVENT(4, "sch_todo: sch=0.%x.%04x, todo=%d\n", sch->schid.ssid,  in css_sch_todo()
564 		      sch->schid.sch_no, todo);  in css_sch_todo()
565 	sch->todo = SCH_TODO_NOTHING;  in css_sch_todo()
566 	spin_unlock_irq(sch->lock);  in css_sch_todo()
572 		ret = css_evaluate_known_subchannel(sch, 1);  in css_sch_todo()
574 			spin_lock_irq(sch->lock);  in css_sch_todo()
575 			css_sched_sch_todo(sch, todo);  in css_sch_todo()
576 			spin_unlock_irq(sch->lock);  in css_sch_todo()
580 		css_sch_device_unregister(sch);  in css_sch_todo()
584 	put_device(&sch->dev);  in css_sch_todo()
605 static int slow_eval_known_fn(struct subchannel *sch, void *data)  in slow_eval_known_fn()  argument
611 	eval = idset_sch_contains(slow_subchannel_set, sch->schid);  in slow_eval_known_fn()
612 	idset_sch_del(slow_subchannel_set, sch->schid);  in slow_eval_known_fn()
615 		rc = css_evaluate_known_subchannel(sch, 1);  in slow_eval_known_fn()
617 			css_schedule_eval(sch->schid);  in slow_eval_known_fn()
699 	struct subchannel *sch = to_subchannel(dev);  in __unset_registered()  local
701 	idset_sch_del(set, sch->schid);  in __unset_registered()
747 	struct subchannel *sch;  in css_process_crw()  local
768 		sch = get_subchannel_by_schid(mchk_schid);  in css_process_crw()
769 		if (sch) {  in css_process_crw()
770 			css_update_ssd_info(sch);  in css_process_crw()
771 			put_device(&sch->dev);  in css_process_crw()
1214 int sch_is_pseudo_sch(struct subchannel *sch)  in sch_is_pseudo_sch()  argument
1216 	return sch == to_css(sch->dev.parent)->pseudo_subchannel;  in sch_is_pseudo_sch()
1221 	struct subchannel *sch = to_subchannel(dev);  in css_bus_match()  local
1226 		if (sch->st == id->type)  in css_bus_match()
1235 	struct subchannel *sch;  in css_probe()  local
1238 	sch = to_subchannel(dev);  in css_probe()
1239 	sch->driver = to_cssdriver(dev->driver);  in css_probe()
1240 	ret = sch->driver->probe ? sch->driver->probe(sch) : 0;  in css_probe()
1242 		sch->driver = NULL;  in css_probe()
1248 	struct subchannel *sch;  in css_remove()  local
1251 	sch = to_subchannel(dev);  in css_remove()
1252 	ret = sch->driver->remove ? sch->driver->remove(sch) : 0;  in css_remove()
1253 	sch->driver = NULL;  in css_remove()
1259 	struct subchannel *sch;  in css_shutdown()  local
1261 	sch = to_subchannel(dev);  in css_shutdown()
1262 	if (sch->driver && sch->driver->shutdown)  in css_shutdown()
1263 		sch->driver->shutdown(sch);  in css_shutdown()
1268 	struct subchannel *sch = to_subchannel(dev);  in css_uevent()  local
1271 	ret = add_uevent_var(env, "ST=%01X", sch->st);  in css_uevent()
1274 	ret = add_uevent_var(env, "MODALIAS=css:t%01X", sch->st);  in css_uevent()
1280 	struct subchannel *sch = to_subchannel(dev);  in css_pm_prepare()  local
1283 	if (mutex_is_locked(&sch->reg_mutex))  in css_pm_prepare()
1285 	if (!sch->dev.driver)  in css_pm_prepare()
1287 	drv = to_cssdriver(sch->dev.driver);  in css_pm_prepare()
1289 	return drv->prepare ? drv->prepare(sch) : 0;  in css_pm_prepare()
1294 	struct subchannel *sch = to_subchannel(dev);  in css_pm_complete()  local
1297 	if (!sch->dev.driver)  in css_pm_complete()
1299 	drv = to_cssdriver(sch->dev.driver);  in css_pm_complete()
1301 		drv->complete(sch);  in css_pm_complete()
1306 	struct subchannel *sch = to_subchannel(dev);  in css_pm_freeze()  local
1309 	if (!sch->dev.driver)  in css_pm_freeze()
1311 	drv = to_cssdriver(sch->dev.driver);  in css_pm_freeze()
1312 	return drv->freeze ? drv->freeze(sch) : 0;  in css_pm_freeze()
1317 	struct subchannel *sch = to_subchannel(dev);  in css_pm_thaw()  local
1320 	if (!sch->dev.driver)  in css_pm_thaw()
1322 	drv = to_cssdriver(sch->dev.driver);  in css_pm_thaw()
1323 	return drv->thaw ? drv->thaw(sch) : 0;  in css_pm_thaw()
1328 	struct subchannel *sch = to_subchannel(dev);  in css_pm_restore()  local
1331 	css_update_ssd_info(sch);  in css_pm_restore()
1332 	if (!sch->dev.driver)  in css_pm_restore()
1334 	drv = to_cssdriver(sch->dev.driver);  in css_pm_restore()
1335 	return drv->restore ? drv->restore(sch) : 0;  in css_pm_restore()