150 static int io_subchannel_prepare(struct subchannel *sch)  in io_subchannel_prepare()  argument
157 	cdev = sch_get_cdev(sch);  in io_subchannel_prepare()
220 	struct subchannel *sch = to_subchannel(dev);  in chpids_show()  local
221 	struct chsc_ssd_info *ssd = &sch->ssd_info;  in chpids_show()
240 	struct subchannel *sch = to_subchannel(dev);  in pimpampom_show()  local
241 	struct pmcw *pmcw = &sch->schib.pmcw;  in pimpampom_show()
323 	struct subchannel *sch;  in ccw_device_set_offline()  local
337 	sch = to_subchannel(cdev->dev.parent);  in ccw_device_set_offline()
358 		io_subchannel_quiesce(sch);  in ccw_device_set_offline()
592 	struct subchannel *sch;  in available_show()  local
602 		sch = to_subchannel(dev->parent);  in available_show()
603 		if (!sch->lpm)  in available_show()
617 	struct subchannel *sch = to_subchannel(dev);  in initiate_logging()  local
620 	rc = chsc_siosl(sch->schid);  in initiate_logging()
624 			   sch->schid.ssid, sch->schid.sch_no, rc);  in initiate_logging()
628 		  sch->schid.ssid, sch->schid.sch_no);  in initiate_logging()
635 	struct subchannel *sch = to_subchannel(dev);  in vpm_show()  local
637 	return sprintf(buf, "%02x\n", sch->vpm);  in vpm_show()
740 static struct ccw_device * io_subchannel_allocate_dev(struct subchannel *sch)  in io_subchannel_allocate_dev()  argument
757 static int io_subchannel_initialize_dev(struct subchannel *sch,  in io_subchannel_initialize_dev()  argument
766 	priv->dev_id.devno = sch->schib.pmcw.dev;  in io_subchannel_initialize_dev()
767 	priv->dev_id.ssid = sch->schid.ssid;  in io_subchannel_initialize_dev()
768 	priv->schid = sch->schid;  in io_subchannel_initialize_dev()
776 	cdev->ccwlock = sch->lock;  in io_subchannel_initialize_dev()
777 	cdev->dev.parent = &sch->dev;  in io_subchannel_initialize_dev()
786 	if (!get_device(&sch->dev)) {  in io_subchannel_initialize_dev()
791 	spin_lock_irq(sch->lock);  in io_subchannel_initialize_dev()
792 	sch_set_cdev(sch, cdev);  in io_subchannel_initialize_dev()
793 	spin_unlock_irq(sch->lock);  in io_subchannel_initialize_dev()
802 static struct ccw_device * io_subchannel_create_ccwdev(struct subchannel *sch)  in io_subchannel_create_ccwdev()  argument
807 	cdev = io_subchannel_allocate_dev(sch);  in io_subchannel_create_ccwdev()
809 		ret = io_subchannel_initialize_dev(sch, cdev);  in io_subchannel_create_ccwdev()
818 static void sch_create_and_recog_new_device(struct subchannel *sch)  in sch_create_and_recog_new_device()  argument
823 	cdev = io_subchannel_create_ccwdev(sch);  in sch_create_and_recog_new_device()
826 		css_sch_device_unregister(sch);  in sch_create_and_recog_new_device()
830 	io_subchannel_recog(cdev, sch);  in sch_create_and_recog_new_device()
838 	struct subchannel *sch;  in io_subchannel_register()  local
842 	sch = to_subchannel(cdev->dev.parent);  in io_subchannel_register()
849 	if (!device_is_registered(&sch->dev))  in io_subchannel_register()
851 	css_update_ssd_info(sch);  in io_subchannel_register()
875 	dev_set_uevent_suppress(&sch->dev, 0);  in io_subchannel_register()
876 	kobject_uevent(&sch->dev.kobj, KOBJ_ADD);  in io_subchannel_register()
883 		spin_lock_irqsave(sch->lock, flags);  in io_subchannel_register()
884 		sch_set_cdev(sch, NULL);  in io_subchannel_register()
885 		spin_unlock_irqrestore(sch->lock, flags);  in io_subchannel_register()
900 	struct subchannel *sch;  in ccw_device_call_sch_unregister()  local
905 	sch = to_subchannel(cdev->dev.parent);  in ccw_device_call_sch_unregister()
906 	css_sch_device_unregister(sch);  in ccw_device_call_sch_unregister()
908 	put_device(&sch->dev);  in ccw_device_call_sch_unregister()
941 static void io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch)  in io_subchannel_recog()  argument
947 	spin_lock_irq(sch->lock);  in io_subchannel_recog()
949 	spin_unlock_irq(sch->lock);  in io_subchannel_recog()
953 				  struct subchannel *sch)  in ccw_device_move_to_sch()  argument
960 	if (!get_device(&sch->dev))  in ccw_device_move_to_sch()
972 			put_device(&sch->dev);  in ccw_device_move_to_sch()
977 	mutex_lock(&sch->reg_mutex);  in ccw_device_move_to_sch()
978 	rc = device_move(&cdev->dev, &sch->dev, DPM_ORDER_PARENT_BEFORE_DEV);  in ccw_device_move_to_sch()
979 	mutex_unlock(&sch->reg_mutex);  in ccw_device_move_to_sch()
983 			      cdev->private->dev_id.devno, sch->schid.ssid,  in ccw_device_move_to_sch()
984 			      sch->schib.pmcw.dev, rc);  in ccw_device_move_to_sch()
992 		put_device(&sch->dev);  in ccw_device_move_to_sch()
1005 	spin_lock_irq(sch->lock);  in ccw_device_move_to_sch()
1006 	cdev->private->schid = sch->schid;  in ccw_device_move_to_sch()
1007 	cdev->ccwlock = sch->lock;  in ccw_device_move_to_sch()
1008 	if (!sch_is_pseudo_sch(sch))  in ccw_device_move_to_sch()
1009 		sch_set_cdev(sch, cdev);  in ccw_device_move_to_sch()
1010 	spin_unlock_irq(sch->lock);  in ccw_device_move_to_sch()
1011 	if (!sch_is_pseudo_sch(sch))  in ccw_device_move_to_sch()
1012 		css_update_ssd_info(sch);  in ccw_device_move_to_sch()
1018 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_move_to_orph()  local
1019 	struct channel_subsystem *css = to_css(sch->dev.parent);  in ccw_device_move_to_orph()
1024 static void io_subchannel_irq(struct subchannel *sch)  in io_subchannel_irq()  argument
1028 	cdev = sch_get_cdev(sch);  in io_subchannel_irq()
1031 	CIO_TRACE_EVENT(6, dev_name(&sch->dev));  in io_subchannel_irq()
1038 void io_subchannel_init_config(struct subchannel *sch)  in io_subchannel_init_config()  argument
1040 	memset(&sch->config, 0, sizeof(sch->config));  in io_subchannel_init_config()
1041 	sch->config.csense = 1;  in io_subchannel_init_config()
1044 static void io_subchannel_init_fields(struct subchannel *sch)  in io_subchannel_init_fields()  argument
1046 	if (cio_is_console(sch->schid))  in io_subchannel_init_fields()
1047 		sch->opm = 0xff;  in io_subchannel_init_fields()
1049 		sch->opm = chp_get_sch_opm(sch);  in io_subchannel_init_fields()
1050 	sch->lpm = sch->schib.pmcw.pam & sch->opm;  in io_subchannel_init_fields()
1051 	sch->isc = cio_is_console(sch->schid) ? CONSOLE_ISC : IO_SCH_ISC;  in io_subchannel_init_fields()
1055 		      sch->schib.pmcw.dev, sch->schid.ssid,  in io_subchannel_init_fields()
1056 		      sch->schid.sch_no, sch->schib.pmcw.pim,  in io_subchannel_init_fields()
1057 		      sch->schib.pmcw.pam, sch->schib.pmcw.pom);  in io_subchannel_init_fields()
1059 	io_subchannel_init_config(sch);  in io_subchannel_init_fields()
1066 static int io_subchannel_probe(struct subchannel *sch)  in io_subchannel_probe()  argument
1072 	if (cio_is_console(sch->schid)) {  in io_subchannel_probe()
1073 		rc = sysfs_create_group(&sch->dev.kobj,  in io_subchannel_probe()
1079 				      sch->schid.ssid, sch->schid.sch_no, rc);  in io_subchannel_probe()
1085 		dev_set_uevent_suppress(&sch->dev, 0);  in io_subchannel_probe()
1086 		kobject_uevent(&sch->dev.kobj, KOBJ_ADD);  in io_subchannel_probe()
1087 		cdev = sch_get_cdev(sch);  in io_subchannel_probe()
1098 	io_subchannel_init_fields(sch);  in io_subchannel_probe()
1099 	rc = cio_commit_config(sch);  in io_subchannel_probe()
1102 	rc = sysfs_create_group(&sch->dev.kobj,  in io_subchannel_probe()
1111 	set_io_private(sch, io_priv);  in io_subchannel_probe()
1112 	css_schedule_eval(sch->schid);  in io_subchannel_probe()
1116 	spin_lock_irq(sch->lock);  in io_subchannel_probe()
1117 	css_sched_sch_todo(sch, SCH_TODO_UNREG);  in io_subchannel_probe()
1118 	spin_unlock_irq(sch->lock);  in io_subchannel_probe()
1123 io_subchannel_remove (struct subchannel *sch)  in io_subchannel_remove()  argument
1125 	struct io_subchannel_private *io_priv = to_io_private(sch);  in io_subchannel_remove()
1128 	cdev = sch_get_cdev(sch);  in io_subchannel_remove()
1131 	io_subchannel_quiesce(sch);  in io_subchannel_remove()
1134 	sch_set_cdev(sch, NULL);  in io_subchannel_remove()
1135 	set_io_private(sch, NULL);  in io_subchannel_remove()
1141 	sysfs_remove_group(&sch->dev.kobj, &io_subchannel_attr_group);  in io_subchannel_remove()
1145 static void io_subchannel_verify(struct subchannel *sch)  in io_subchannel_verify()  argument
1149 	cdev = sch_get_cdev(sch);  in io_subchannel_verify()
1154 static void io_subchannel_terminate_path(struct subchannel *sch, u8 mask)  in io_subchannel_terminate_path()  argument
1158 	cdev = sch_get_cdev(sch);  in io_subchannel_terminate_path()
1161 	if (cio_update_schib(sch))  in io_subchannel_terminate_path()
1164 	if (scsw_actl(&sch->schib.scsw) == 0 || sch->schib.pmcw.lpum != mask)  in io_subchannel_terminate_path()
1170 	if (cio_clear(sch))  in io_subchannel_terminate_path()
1181 static int io_subchannel_chp_event(struct subchannel *sch,  in io_subchannel_chp_event()  argument
1184 	struct ccw_device *cdev = sch_get_cdev(sch);  in io_subchannel_chp_event()
1187 	mask = chp_ssd_get_mask(&sch->ssd_info, link);  in io_subchannel_chp_event()
1192 		sch->opm &= ~mask;  in io_subchannel_chp_event()
1193 		sch->lpm &= ~mask;  in io_subchannel_chp_event()
1196 		io_subchannel_terminate_path(sch, mask);  in io_subchannel_chp_event()
1199 		sch->opm |= mask;  in io_subchannel_chp_event()
1200 		sch->lpm |= mask;  in io_subchannel_chp_event()
1203 		io_subchannel_verify(sch);  in io_subchannel_chp_event()
1206 		if (cio_update_schib(sch))  in io_subchannel_chp_event()
1210 		io_subchannel_terminate_path(sch, mask);  in io_subchannel_chp_event()
1213 		if (cio_update_schib(sch))  in io_subchannel_chp_event()
1215 		sch->lpm |= mask & sch->opm;  in io_subchannel_chp_event()
1218 		io_subchannel_verify(sch);  in io_subchannel_chp_event()
1224 static void io_subchannel_quiesce(struct subchannel *sch)  in io_subchannel_quiesce()  argument
1229 	spin_lock_irq(sch->lock);  in io_subchannel_quiesce()
1230 	cdev = sch_get_cdev(sch);  in io_subchannel_quiesce()
1231 	if (cio_is_console(sch->schid))  in io_subchannel_quiesce()
1233 	if (!sch->schib.pmcw.ena)  in io_subchannel_quiesce()
1235 	ret = cio_disable_subchannel(sch);  in io_subchannel_quiesce()
1246 			spin_unlock_irq(sch->lock);  in io_subchannel_quiesce()
1249 			spin_lock_irq(sch->lock);  in io_subchannel_quiesce()
1251 		ret = cio_disable_subchannel(sch);  in io_subchannel_quiesce()
1254 	spin_unlock_irq(sch->lock);  in io_subchannel_quiesce()
1257 static void io_subchannel_shutdown(struct subchannel *sch)  in io_subchannel_shutdown()  argument
1259 	io_subchannel_quiesce(sch);  in io_subchannel_shutdown()
1382 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_set_notoper()  local
1385 	CIO_TRACE_EVENT(2, dev_name(&sch->dev));  in ccw_device_set_notoper()
1387 	cio_disable_subchannel(sch);  in ccw_device_set_notoper()
1403 static enum io_sch_action sch_get_action(struct subchannel *sch)  in sch_get_action()  argument
1407 	cdev = sch_get_cdev(sch);  in sch_get_action()
1408 	if (cio_update_schib(sch)) {  in sch_get_action()
1419 	if (sch->schib.pmcw.dev != cdev->private->dev_id.devno) {  in sch_get_action()
1424 	if ((sch->schib.pmcw.pam & sch->opm) == 0) {  in sch_get_action()
1448 static int io_subchannel_sch_event(struct subchannel *sch, int process)  in io_subchannel_sch_event()  argument
1456 	spin_lock_irqsave(sch->lock, flags);  in io_subchannel_sch_event()
1457 	if (!device_is_registered(&sch->dev))  in io_subchannel_sch_event()
1459 	if (work_pending(&sch->todo_work))  in io_subchannel_sch_event()
1461 	cdev = sch_get_cdev(sch);  in io_subchannel_sch_event()
1464 	action = sch_get_action(sch);  in io_subchannel_sch_event()
1466 		      sch->schid.ssid, sch->schid.sch_no, process,  in io_subchannel_sch_event()
1477 		io_subchannel_verify(sch);  in io_subchannel_sch_event()
1508 	spin_unlock_irqrestore(sch->lock, flags);  in io_subchannel_sch_event()
1522 		spin_lock_irqsave(sch->lock, flags);  in io_subchannel_sch_event()
1528 		sch_set_cdev(sch, NULL);  in io_subchannel_sch_event()
1529 		spin_unlock_irqrestore(sch->lock, flags);  in io_subchannel_sch_event()
1541 			css_sch_device_unregister(sch);  in io_subchannel_sch_event()
1546 		dev_id.ssid = sch->schid.ssid;  in io_subchannel_sch_event()
1547 		dev_id.devno = sch->schib.pmcw.dev;  in io_subchannel_sch_event()
1550 			sch_create_and_recog_new_device(sch);  in io_subchannel_sch_event()
1553 		rc = ccw_device_move_to_sch(cdev, sch);  in io_subchannel_sch_event()
1559 		spin_lock_irqsave(sch->lock, flags);  in io_subchannel_sch_event()
1561 		spin_unlock_irqrestore(sch->lock, flags);  in io_subchannel_sch_event()
1571 	spin_unlock_irqrestore(sch->lock, flags);  in io_subchannel_sch_event()
1591 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_enable_console()  local
1597 	io_subchannel_init_fields(sch);  in ccw_device_enable_console()
1598 	rc = cio_commit_config(sch);  in ccw_device_enable_console()
1601 	sch->driver = &io_subchannel_driver;  in ccw_device_enable_console()
1602 	io_subchannel_recog(cdev, sch);  in ccw_device_enable_console()
1632 	struct subchannel *sch;  in ccw_device_create_console()  local
1634 	sch = cio_probe_console();  in ccw_device_create_console()
1635 	if (IS_ERR(sch))  in ccw_device_create_console()
1636 		return ERR_CAST(sch);  in ccw_device_create_console()
1640 		put_device(&sch->dev);  in ccw_device_create_console()
1643 	set_io_private(sch, io_priv);  in ccw_device_create_console()
1644 	cdev = io_subchannel_create_ccwdev(sch);  in ccw_device_create_console()
1646 		put_device(&sch->dev);  in ccw_device_create_console()
1657 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_destroy_console()  local
1658 	struct io_subchannel_private *io_priv = to_io_private(sch);  in ccw_device_destroy_console()
1660 	set_io_private(sch, NULL);  in ccw_device_destroy_console()
1661 	put_device(&sch->dev);  in ccw_device_destroy_console()
1676 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_wait_idle()  local
1679 		cio_tsch(sch);  in ccw_device_wait_idle()
1680 		if (sch->schib.scsw.cmd.actl == 0)  in ccw_device_wait_idle()
1832 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_pm_freeze()  local
1846 	spin_lock_irq(sch->lock);  in ccw_device_pm_freeze()
1848 	spin_unlock_irq(sch->lock);  in ccw_device_pm_freeze()
1856 	spin_lock_irq(sch->lock);  in ccw_device_pm_freeze()
1857 	ret = cio_disable_subchannel(sch);  in ccw_device_pm_freeze()
1858 	spin_unlock_irq(sch->lock);  in ccw_device_pm_freeze()
1866 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_pm_thaw()  local
1872 	spin_lock_irq(sch->lock);  in ccw_device_pm_thaw()
1874 	ret = cio_enable_subchannel(sch, (u32)(addr_t)sch);  in ccw_device_pm_thaw()
1876 	spin_unlock_irq(sch->lock);  in ccw_device_pm_thaw()
1894 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in __ccw_device_pm_restore()  local
1896 	spin_lock_irq(sch->lock);  in __ccw_device_pm_restore()
1897 	if (cio_is_console(sch->schid)) {  in __ccw_device_pm_restore()
1898 		cio_enable_subchannel(sch, (u32)(addr_t)sch);  in __ccw_device_pm_restore()
1907 	css_sched_sch_todo(sch, SCH_TODO_EVAL);  in __ccw_device_pm_restore()
1908 	spin_unlock_irq(sch->lock);  in __ccw_device_pm_restore()
1912 	sch = to_subchannel(cdev->dev.parent);  in __ccw_device_pm_restore()
1913 	spin_lock_irq(sch->lock);  in __ccw_device_pm_restore()
1919 	spin_unlock_irq(sch->lock);  in __ccw_device_pm_restore()
1922 	spin_lock_irq(sch->lock);  in __ccw_device_pm_restore()
1926 	spin_unlock_irq(sch->lock);  in __ccw_device_pm_restore()
1950 	struct subchannel *sch;  in ccw_device_pm_restore()  local
1954 	sch = to_subchannel(cdev->dev.parent);  in ccw_device_pm_restore()
1955 	spin_lock_irq(sch->lock);  in ccw_device_pm_restore()
1956 	if (cio_is_console(sch->schid))  in ccw_device_pm_restore()
1992 	spin_unlock_irq(sch->lock);  in ccw_device_pm_restore()
1994 	spin_lock_irq(sch->lock);  in ccw_device_pm_restore()
2004 		spin_unlock_irq(sch->lock);  in ccw_device_pm_restore()
2006 		spin_lock_irq(sch->lock);  in ccw_device_pm_restore()
2016 	spin_unlock_irq(sch->lock);  in ccw_device_pm_restore()
2022 	spin_unlock_irq(sch->lock);  in ccw_device_pm_restore()
2076 	struct subchannel *sch;  in ccw_device_todo()  local
2081 	sch = to_subchannel(cdev->dev.parent);  in ccw_device_todo()
2101 		if (!sch_is_pseudo_sch(sch))  in ccw_device_todo()
2102 			css_schedule_eval(sch->schid);  in ccw_device_todo()
2105 		if (sch_is_pseudo_sch(sch))  in ccw_device_todo()
2152 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_siosl()  local
2154 	return chsc_siosl(sch->schid);  in ccw_device_siosl()