67 	struct subchannel *sch = to_subchannel(dev);  in call_fn_known_sch()  local
72 		idset_sch_del(cb->set, sch->schid);  in call_fn_known_sch()
74 		rc = cb->fn_known_sch(sch, cb->data);  in call_fn_known_sch()
91 	struct subchannel *sch;  in call_fn_all_sch()  local
94 	sch = get_subchannel_by_schid(schid);  in call_fn_all_sch()
95 	if (sch) {  in call_fn_all_sch()
97 			rc = cb->fn_known_sch(sch, cb->data);  in call_fn_all_sch()
98 		put_device(&sch->dev);  in call_fn_all_sch()
147 static int css_sch_create_locks(struct subchannel *sch)  in css_sch_create_locks()  argument
149 	sch->lock = kmalloc(sizeof(*sch->lock), GFP_KERNEL);  in css_sch_create_locks()
150 	if (!sch->lock)  in css_sch_create_locks()
153 	spin_lock_init(sch->lock);  in css_sch_create_locks()
154 	mutex_init(&sch->reg_mutex);  in css_sch_create_locks()
161 	struct subchannel *sch = to_subchannel(dev);  in css_subchannel_release()  local
163 	sch->config.intparm = 0;  in css_subchannel_release()
164 	cio_commit_config(sch);  in css_subchannel_release()
165 	kfree(sch->lock);  in css_subchannel_release()
166 	kfree(sch);  in css_subchannel_release()
171 	struct subchannel *sch;  in css_alloc_subchannel()  local
174 	sch = kzalloc(sizeof(*sch), GFP_KERNEL | GFP_DMA);  in css_alloc_subchannel()
175 	if (!sch)  in css_alloc_subchannel()
178 	ret = cio_validate_subchannel(sch, schid);  in css_alloc_subchannel()
182 	ret = css_sch_create_locks(sch);  in css_alloc_subchannel()
186 	INIT_WORK(&sch->todo_work, css_sch_todo);  in css_alloc_subchannel()
187 	sch->dev.release = &css_subchannel_release;  in css_alloc_subchannel()
188 	device_initialize(&sch->dev);  in css_alloc_subchannel()
189 	return sch;  in css_alloc_subchannel()
192 	kfree(sch);  in css_alloc_subchannel()
196 static int css_sch_device_register(struct subchannel *sch)  in css_sch_device_register()  argument
200 	mutex_lock(&sch->reg_mutex);  in css_sch_device_register()
201 	dev_set_name(&sch->dev, "0.%x.%04x", sch->schid.ssid,  in css_sch_device_register()
202 		     sch->schid.sch_no);  in css_sch_device_register()
203 	ret = device_add(&sch->dev);  in css_sch_device_register()
204 	mutex_unlock(&sch->reg_mutex);  in css_sch_device_register()
212 void css_sch_device_unregister(struct subchannel *sch)  in css_sch_device_unregister()  argument
214 	mutex_lock(&sch->reg_mutex);  in css_sch_device_unregister()
215 	if (device_is_registered(&sch->dev))  in css_sch_device_unregister()
216 		device_unregister(&sch->dev);  in css_sch_device_unregister()
217 	mutex_unlock(&sch->reg_mutex);  in css_sch_device_unregister()
250 void css_update_ssd_info(struct subchannel *sch)  in css_update_ssd_info()  argument
254 	ret = chsc_get_ssd_info(sch->schid, &sch->ssd_info);  in css_update_ssd_info()
256 		ssd_from_pmcw(&sch->ssd_info, &sch->schib.pmcw);  in css_update_ssd_info()
258 	ssd_register_chpids(&sch->ssd_info);  in css_update_ssd_info()
264 	struct subchannel *sch = to_subchannel(dev);  in type_show()  local
266 	return sprintf(buf, "%01x\n", sch->st);  in type_show()
274 	struct subchannel *sch = to_subchannel(dev);  in modalias_show()  local
276 	return sprintf(buf, "css:t%01X\n", sch->st);  in modalias_show()
296 int css_register_subchannel(struct subchannel *sch)  in css_register_subchannel()  argument
301 	sch->dev.parent = &channel_subsystems[0]->device;  in css_register_subchannel()
302 	sch->dev.bus = &css_bus_type;  in css_register_subchannel()
303 	sch->dev.groups = default_subch_attr_groups;  in css_register_subchannel()
313 	dev_set_uevent_suppress(&sch->dev, 1);  in css_register_subchannel()
314 	css_update_ssd_info(sch);  in css_register_subchannel()
316 	ret = css_sch_device_register(sch);  in css_register_subchannel()
319 			      sch->schid.ssid, sch->schid.sch_no, ret);  in css_register_subchannel()
322 	if (!sch->driver) {  in css_register_subchannel()
328 		dev_set_uevent_suppress(&sch->dev, 0);  in css_register_subchannel()
329 		kobject_uevent(&sch->dev.kobj, KOBJ_ADD);  in css_register_subchannel()
336 	struct subchannel *sch;  in css_probe_device()  local
339 	sch = css_alloc_subchannel(schid);  in css_probe_device()
340 	if (IS_ERR(sch))  in css_probe_device()
341 		return PTR_ERR(sch);  in css_probe_device()
343 	ret = css_register_subchannel(sch);  in css_probe_device()
345 		put_device(&sch->dev);  in css_probe_device()
353 	struct subchannel *sch;  in check_subchannel()  local
356 	sch = to_subchannel(dev);  in check_subchannel()
357 	return schid_equal(&sch->schid, schid);  in check_subchannel()
407 static int css_evaluate_known_subchannel(struct subchannel *sch, int slow)  in css_evaluate_known_subchannel()  argument
411 	if (sch->driver) {  in css_evaluate_known_subchannel()
412 		if (sch->driver->sch_event)  in css_evaluate_known_subchannel()
413 			ret = sch->driver->sch_event(sch, slow);  in css_evaluate_known_subchannel()
415 			dev_dbg(&sch->dev,  in css_evaluate_known_subchannel()
421 			      sch->schid.ssid, sch->schid.sch_no, ret);  in css_evaluate_known_subchannel()
428 	struct subchannel *sch;  in css_evaluate_subchannel()  local
431 	sch = get_subchannel_by_schid(schid);  in css_evaluate_subchannel()
432 	if (sch) {  in css_evaluate_subchannel()
433 		ret = css_evaluate_known_subchannel(sch, slow);  in css_evaluate_subchannel()
434 		put_device(&sch->dev);  in css_evaluate_subchannel()
450 void css_sched_sch_todo(struct subchannel *sch, enum sch_todo todo)  in css_sched_sch_todo()  argument
453 		      sch->schid.ssid, sch->schid.sch_no, todo);  in css_sched_sch_todo()
454 	if (sch->todo >= todo)  in css_sched_sch_todo()
457 	if (!get_device(&sch->dev))  in css_sched_sch_todo()
459 	sch->todo = todo;  in css_sched_sch_todo()
460 	if (!queue_work(cio_work_q, &sch->todo_work)) {  in css_sched_sch_todo()
462 		put_device(&sch->dev);  in css_sched_sch_todo()
469 	struct subchannel *sch;  in css_sch_todo()  local
473 	sch = container_of(work, struct subchannel, todo_work);  in css_sch_todo()
475 	spin_lock_irq(sch->lock);  in css_sch_todo()
476 	todo = sch->todo;  in css_sch_todo()
477 	CIO_MSG_EVENT(4, "sch_todo: sch=0.%x.%04x, todo=%d\n", sch->schid.ssid,  in css_sch_todo()
478 		      sch->schid.sch_no, todo);  in css_sch_todo()
479 	sch->todo = SCH_TODO_NOTHING;  in css_sch_todo()
480 	spin_unlock_irq(sch->lock);  in css_sch_todo()
486 		ret = css_evaluate_known_subchannel(sch, 1);  in css_sch_todo()
488 			spin_lock_irq(sch->lock);  in css_sch_todo()
489 			css_sched_sch_todo(sch, todo);  in css_sch_todo()
490 			spin_unlock_irq(sch->lock);  in css_sch_todo()
494 		css_sch_device_unregister(sch);  in css_sch_todo()
498 	put_device(&sch->dev);  in css_sch_todo()
519 static int slow_eval_known_fn(struct subchannel *sch, void *data)  in slow_eval_known_fn()  argument
525 	eval = idset_sch_contains(slow_subchannel_set, sch->schid);  in slow_eval_known_fn()
526 	idset_sch_del(slow_subchannel_set, sch->schid);  in slow_eval_known_fn()
529 		rc = css_evaluate_known_subchannel(sch, 1);  in slow_eval_known_fn()
531 			css_schedule_eval(sch->schid);  in slow_eval_known_fn()
613 	struct subchannel *sch = to_subchannel(dev);  in __unset_registered()  local
615 	idset_sch_del(set, sch->schid);  in __unset_registered()
661 	struct subchannel *sch;  in css_process_crw()  local
682 		sch = get_subchannel_by_schid(mchk_schid);  in css_process_crw()
683 		if (sch) {  in css_process_crw()
684 			css_update_ssd_info(sch);  in css_process_crw()
685 			put_device(&sch->dev);  in css_process_crw()
1121 int sch_is_pseudo_sch(struct subchannel *sch)  in sch_is_pseudo_sch()  argument
1123 	return sch == to_css(sch->dev.parent)->pseudo_subchannel;  in sch_is_pseudo_sch()
1128 	struct subchannel *sch = to_subchannel(dev);  in css_bus_match()  local
1133 		if (sch->st == id->type)  in css_bus_match()
1142 	struct subchannel *sch;  in css_probe()  local
1145 	sch = to_subchannel(dev);  in css_probe()
1146 	sch->driver = to_cssdriver(dev->driver);  in css_probe()
1147 	ret = sch->driver->probe ? sch->driver->probe(sch) : 0;  in css_probe()
1149 		sch->driver = NULL;  in css_probe()
1155 	struct subchannel *sch;  in css_remove()  local
1158 	sch = to_subchannel(dev);  in css_remove()
1159 	ret = sch->driver->remove ? sch->driver->remove(sch) : 0;  in css_remove()
1160 	sch->driver = NULL;  in css_remove()
1166 	struct subchannel *sch;  in css_shutdown()  local
1168 	sch = to_subchannel(dev);  in css_shutdown()
1169 	if (sch->driver && sch->driver->shutdown)  in css_shutdown()
1170 		sch->driver->shutdown(sch);  in css_shutdown()
1175 	struct subchannel *sch = to_subchannel(dev);  in css_uevent()  local
1178 	ret = add_uevent_var(env, "ST=%01X", sch->st);  in css_uevent()
1181 	ret = add_uevent_var(env, "MODALIAS=css:t%01X", sch->st);  in css_uevent()
1187 	struct subchannel *sch = to_subchannel(dev);  in css_pm_prepare()  local
1190 	if (mutex_is_locked(&sch->reg_mutex))  in css_pm_prepare()
1192 	if (!sch->dev.driver)  in css_pm_prepare()
1194 	drv = to_cssdriver(sch->dev.driver);  in css_pm_prepare()
1196 	return drv->prepare ? drv->prepare(sch) : 0;  in css_pm_prepare()
1201 	struct subchannel *sch = to_subchannel(dev);  in css_pm_complete()  local
1204 	if (!sch->dev.driver)  in css_pm_complete()
1206 	drv = to_cssdriver(sch->dev.driver);  in css_pm_complete()
1208 		drv->complete(sch);  in css_pm_complete()
1213 	struct subchannel *sch = to_subchannel(dev);  in css_pm_freeze()  local
1216 	if (!sch->dev.driver)  in css_pm_freeze()
1218 	drv = to_cssdriver(sch->dev.driver);  in css_pm_freeze()
1219 	return drv->freeze ? drv->freeze(sch) : 0;  in css_pm_freeze()
1224 	struct subchannel *sch = to_subchannel(dev);  in css_pm_thaw()  local
1227 	if (!sch->dev.driver)  in css_pm_thaw()
1229 	drv = to_cssdriver(sch->dev.driver);  in css_pm_thaw()
1230 	return drv->thaw ? drv->thaw(sch) : 0;  in css_pm_thaw()
1235 	struct subchannel *sch = to_subchannel(dev);  in css_pm_restore()  local
1238 	css_update_ssd_info(sch);  in css_pm_restore()
1239 	if (!sch->dev.driver)  in css_pm_restore()
1241 	drv = to_cssdriver(sch->dev.driver);  in css_pm_restore()
1242 	return drv->restore ? drv->restore(sch) : 0;  in css_pm_restore()