68 	struct subchannel *sch = to_subchannel(dev);  in call_fn_known_sch()  local
73 		idset_sch_del(cb->set, sch->schid);  in call_fn_known_sch()
75 		rc = cb->fn_known_sch(sch, cb->data);  in call_fn_known_sch()
92 	struct subchannel *sch;  in call_fn_all_sch()  local
95 	sch = get_subchannel_by_schid(schid);  in call_fn_all_sch()
96 	if (sch) {  in call_fn_all_sch()
98 			rc = cb->fn_known_sch(sch, cb->data);  in call_fn_all_sch()
99 		put_device(&sch->dev);  in call_fn_all_sch()
148 static int css_sch_create_locks(struct subchannel *sch)  in css_sch_create_locks()  argument
150 	sch->lock = kmalloc(sizeof(*sch->lock), GFP_KERNEL);  in css_sch_create_locks()
151 	if (!sch->lock)  in css_sch_create_locks()
154 	spin_lock_init(sch->lock);  in css_sch_create_locks()
155 	mutex_init(&sch->reg_mutex);  in css_sch_create_locks()
162 	struct subchannel *sch = to_subchannel(dev);  in css_subchannel_release()  local
164 	sch->config.intparm = 0;  in css_subchannel_release()
165 	cio_commit_config(sch);  in css_subchannel_release()
166 	kfree(sch->lock);  in css_subchannel_release()
167 	kfree(sch);  in css_subchannel_release()
172 	struct subchannel *sch;  in css_alloc_subchannel()  local
175 	sch = kzalloc(sizeof(*sch), GFP_KERNEL | GFP_DMA);  in css_alloc_subchannel()
176 	if (!sch)  in css_alloc_subchannel()
179 	ret = cio_validate_subchannel(sch, schid);  in css_alloc_subchannel()
183 	ret = css_sch_create_locks(sch);  in css_alloc_subchannel()
187 	INIT_WORK(&sch->todo_work, css_sch_todo);  in css_alloc_subchannel()
188 	sch->dev.release = &css_subchannel_release;  in css_alloc_subchannel()
189 	device_initialize(&sch->dev);  in css_alloc_subchannel()
190 	return sch;  in css_alloc_subchannel()
193 	kfree(sch);  in css_alloc_subchannel()
197 static int css_sch_device_register(struct subchannel *sch)  in css_sch_device_register()  argument
201 	mutex_lock(&sch->reg_mutex);  in css_sch_device_register()
202 	dev_set_name(&sch->dev, "0.%x.%04x", sch->schid.ssid,  in css_sch_device_register()
203 		     sch->schid.sch_no);  in css_sch_device_register()
204 	ret = device_add(&sch->dev);  in css_sch_device_register()
205 	mutex_unlock(&sch->reg_mutex);  in css_sch_device_register()
213 void css_sch_device_unregister(struct subchannel *sch)  in css_sch_device_unregister()  argument
215 	mutex_lock(&sch->reg_mutex);  in css_sch_device_unregister()
216 	if (device_is_registered(&sch->dev))  in css_sch_device_unregister()
217 		device_unregister(&sch->dev);  in css_sch_device_unregister()
218 	mutex_unlock(&sch->reg_mutex);  in css_sch_device_unregister()
251 void css_update_ssd_info(struct subchannel *sch)  in css_update_ssd_info()  argument
255 	ret = chsc_get_ssd_info(sch->schid, &sch->ssd_info);  in css_update_ssd_info()
257 		ssd_from_pmcw(&sch->ssd_info, &sch->schib.pmcw);  in css_update_ssd_info()
259 	ssd_register_chpids(&sch->ssd_info);  in css_update_ssd_info()
265 	struct subchannel *sch = to_subchannel(dev);  in type_show()  local
267 	return sprintf(buf, "%01x\n", sch->st);  in type_show()
275 	struct subchannel *sch = to_subchannel(dev);  in modalias_show()  local
277 	return sprintf(buf, "css:t%01X\n", sch->st);  in modalias_show()
297 int css_register_subchannel(struct subchannel *sch)  in css_register_subchannel()  argument
302 	sch->dev.parent = &channel_subsystems[0]->device;  in css_register_subchannel()
303 	sch->dev.bus = &css_bus_type;  in css_register_subchannel()
304 	sch->dev.groups = default_subch_attr_groups;  in css_register_subchannel()
314 	dev_set_uevent_suppress(&sch->dev, 1);  in css_register_subchannel()
315 	css_update_ssd_info(sch);  in css_register_subchannel()
317 	ret = css_sch_device_register(sch);  in css_register_subchannel()
320 			      sch->schid.ssid, sch->schid.sch_no, ret);  in css_register_subchannel()
323 	if (!sch->driver) {  in css_register_subchannel()
329 		dev_set_uevent_suppress(&sch->dev, 0);  in css_register_subchannel()
330 		kobject_uevent(&sch->dev.kobj, KOBJ_ADD);  in css_register_subchannel()
337 	struct subchannel *sch;  in css_probe_device()  local
340 	sch = css_alloc_subchannel(schid);  in css_probe_device()
341 	if (IS_ERR(sch))  in css_probe_device()
342 		return PTR_ERR(sch);  in css_probe_device()
344 	ret = css_register_subchannel(sch);  in css_probe_device()
346 		put_device(&sch->dev);  in css_probe_device()
354 	struct subchannel *sch;  in check_subchannel()  local
357 	sch = to_subchannel(dev);  in check_subchannel()
358 	return schid_equal(&sch->schid, schid);  in check_subchannel()
408 static int css_evaluate_known_subchannel(struct subchannel *sch, int slow)  in css_evaluate_known_subchannel()  argument
412 	if (sch->driver) {  in css_evaluate_known_subchannel()
413 		if (sch->driver->sch_event)  in css_evaluate_known_subchannel()
414 			ret = sch->driver->sch_event(sch, slow);  in css_evaluate_known_subchannel()
416 			dev_dbg(&sch->dev,  in css_evaluate_known_subchannel()
422 			      sch->schid.ssid, sch->schid.sch_no, ret);  in css_evaluate_known_subchannel()
429 	struct subchannel *sch;  in css_evaluate_subchannel()  local
432 	sch = get_subchannel_by_schid(schid);  in css_evaluate_subchannel()
433 	if (sch) {  in css_evaluate_subchannel()
434 		ret = css_evaluate_known_subchannel(sch, slow);  in css_evaluate_subchannel()
435 		put_device(&sch->dev);  in css_evaluate_subchannel()
451 void css_sched_sch_todo(struct subchannel *sch, enum sch_todo todo)  in css_sched_sch_todo()  argument
454 		      sch->schid.ssid, sch->schid.sch_no, todo);  in css_sched_sch_todo()
455 	if (sch->todo >= todo)  in css_sched_sch_todo()
458 	if (!get_device(&sch->dev))  in css_sched_sch_todo()
460 	sch->todo = todo;  in css_sched_sch_todo()
461 	if (!queue_work(cio_work_q, &sch->todo_work)) {  in css_sched_sch_todo()
463 		put_device(&sch->dev);  in css_sched_sch_todo()
470 	struct subchannel *sch;  in css_sch_todo()  local
474 	sch = container_of(work, struct subchannel, todo_work);  in css_sch_todo()
476 	spin_lock_irq(sch->lock);  in css_sch_todo()
477 	todo = sch->todo;  in css_sch_todo()
478 	CIO_MSG_EVENT(4, "sch_todo: sch=0.%x.%04x, todo=%d\n", sch->schid.ssid,  in css_sch_todo()
479 		      sch->schid.sch_no, todo);  in css_sch_todo()
480 	sch->todo = SCH_TODO_NOTHING;  in css_sch_todo()
481 	spin_unlock_irq(sch->lock);  in css_sch_todo()
487 		ret = css_evaluate_known_subchannel(sch, 1);  in css_sch_todo()
489 			spin_lock_irq(sch->lock);  in css_sch_todo()
490 			css_sched_sch_todo(sch, todo);  in css_sch_todo()
491 			spin_unlock_irq(sch->lock);  in css_sch_todo()
495 		css_sch_device_unregister(sch);  in css_sch_todo()
499 	put_device(&sch->dev);  in css_sch_todo()
520 static int slow_eval_known_fn(struct subchannel *sch, void *data)  in slow_eval_known_fn()  argument
526 	eval = idset_sch_contains(slow_subchannel_set, sch->schid);  in slow_eval_known_fn()
527 	idset_sch_del(slow_subchannel_set, sch->schid);  in slow_eval_known_fn()
530 		rc = css_evaluate_known_subchannel(sch, 1);  in slow_eval_known_fn()
532 			css_schedule_eval(sch->schid);  in slow_eval_known_fn()
614 	struct subchannel *sch = to_subchannel(dev);  in __unset_registered()  local
616 	idset_sch_del(set, sch->schid);  in __unset_registered()
662 	struct subchannel *sch;  in css_process_crw()  local
683 		sch = get_subchannel_by_schid(mchk_schid);  in css_process_crw()
684 		if (sch) {  in css_process_crw()
685 			css_update_ssd_info(sch);  in css_process_crw()
686 			put_device(&sch->dev);  in css_process_crw()
1126 int sch_is_pseudo_sch(struct subchannel *sch)  in sch_is_pseudo_sch()  argument
1128 	return sch == to_css(sch->dev.parent)->pseudo_subchannel;  in sch_is_pseudo_sch()
1133 	struct subchannel *sch = to_subchannel(dev);  in css_bus_match()  local
1138 		if (sch->st == id->type)  in css_bus_match()
1147 	struct subchannel *sch;  in css_probe()  local
1150 	sch = to_subchannel(dev);  in css_probe()
1151 	sch->driver = to_cssdriver(dev->driver);  in css_probe()
1152 	ret = sch->driver->probe ? sch->driver->probe(sch) : 0;  in css_probe()
1154 		sch->driver = NULL;  in css_probe()
1160 	struct subchannel *sch;  in css_remove()  local
1163 	sch = to_subchannel(dev);  in css_remove()
1164 	ret = sch->driver->remove ? sch->driver->remove(sch) : 0;  in css_remove()
1165 	sch->driver = NULL;  in css_remove()
1171 	struct subchannel *sch;  in css_shutdown()  local
1173 	sch = to_subchannel(dev);  in css_shutdown()
1174 	if (sch->driver && sch->driver->shutdown)  in css_shutdown()
1175 		sch->driver->shutdown(sch);  in css_shutdown()
1180 	struct subchannel *sch = to_subchannel(dev);  in css_uevent()  local
1183 	ret = add_uevent_var(env, "ST=%01X", sch->st);  in css_uevent()
1186 	ret = add_uevent_var(env, "MODALIAS=css:t%01X", sch->st);  in css_uevent()
1192 	struct subchannel *sch = to_subchannel(dev);  in css_pm_prepare()  local
1195 	if (mutex_is_locked(&sch->reg_mutex))  in css_pm_prepare()
1197 	if (!sch->dev.driver)  in css_pm_prepare()
1199 	drv = to_cssdriver(sch->dev.driver);  in css_pm_prepare()
1201 	return drv->prepare ? drv->prepare(sch) : 0;  in css_pm_prepare()
1206 	struct subchannel *sch = to_subchannel(dev);  in css_pm_complete()  local
1209 	if (!sch->dev.driver)  in css_pm_complete()
1211 	drv = to_cssdriver(sch->dev.driver);  in css_pm_complete()
1213 		drv->complete(sch);  in css_pm_complete()
1218 	struct subchannel *sch = to_subchannel(dev);  in css_pm_freeze()  local
1221 	if (!sch->dev.driver)  in css_pm_freeze()
1223 	drv = to_cssdriver(sch->dev.driver);  in css_pm_freeze()
1224 	return drv->freeze ? drv->freeze(sch) : 0;  in css_pm_freeze()
1229 	struct subchannel *sch = to_subchannel(dev);  in css_pm_thaw()  local
1232 	if (!sch->dev.driver)  in css_pm_thaw()
1234 	drv = to_cssdriver(sch->dev.driver);  in css_pm_thaw()
1235 	return drv->thaw ? drv->thaw(sch) : 0;  in css_pm_thaw()
1240 	struct subchannel *sch = to_subchannel(dev);  in css_pm_restore()  local
1243 	css_update_ssd_info(sch);  in css_pm_restore()
1244 	if (!sch->dev.driver)  in css_pm_restore()
1246 	drv = to_cssdriver(sch->dev.driver);  in css_pm_restore()
1247 	return drv->restore ? drv->restore(sch) : 0;  in css_pm_restore()