1 // SPDX-License-Identifier: GPL-2.0
54 	orb->eadm.compat1 = 1;  in orb_init()
55 	orb->eadm.compat2 = 1;  in orb_init()
56 	orb->eadm.fmt = 1;  in orb_init()
57 	orb->eadm.x = 1;  in orb_init()
62 	union orb *orb = &get_eadm_private(sch)->orb;  in eadm_subchannel_start()
66 	orb->eadm.aob = (u32)virt_to_phys(aob);  in eadm_subchannel_start()
67 	orb->eadm.intparm = (u32)virt_to_phys(sch);  in eadm_subchannel_start()
68 	orb->eadm.key = PAGE_DEFAULT_KEY >> 4;  in eadm_subchannel_start()
71 	EADM_LOG_HEX(6, &sch->schid, sizeof(sch->schid));  in eadm_subchannel_start()
73 	cc = ssch(sch->schid, orb);  in eadm_subchannel_start()
76 		sch->schib.scsw.eadm.actl |= SCSW_ACTL_START_PEND;  in eadm_subchannel_start()
80 		return -EBUSY;  in eadm_subchannel_start()
81 	case 3:		/* not operational */  in eadm_subchannel_start()
82 		return -ENODEV;  in eadm_subchannel_start()
91 	cc = csch(sch->schid);  in eadm_subchannel_clear()
93 		return -ENODEV;  in eadm_subchannel_clear()
95 	sch->schib.scsw.eadm.actl |= SCSW_ACTL_CLEAR_PEND;  in eadm_subchannel_clear()
102 	struct subchannel *sch = private->sch;  in eadm_subchannel_timeout()
104 	spin_lock_irq(sch->lock);  in eadm_subchannel_timeout()
106 	EADM_LOG_HEX(1, &sch->schid, sizeof(sch->schid));  in eadm_subchannel_timeout()
109 	spin_unlock_irq(sch->lock);  in eadm_subchannel_timeout()
117 		del_timer(&private->timer);  in eadm_subchannel_set_timeout()
119 		mod_timer(&private->timer, jiffies + expires);  in eadm_subchannel_set_timeout()
125 	struct eadm_scsw *scsw = &sch->schib.scsw.eadm;  in eadm_subchannel_irq()
134 	if ((scsw->stctl & (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND))  in eadm_subchannel_irq()
135 	    && scsw->eswf == 1 && irb->esw.eadm.erw.r)  in eadm_subchannel_irq()
138 	if (scsw->fctl & SCSW_FCTL_CLEAR_FUNC)  in eadm_subchannel_irq()
143 	if (private->state != EADM_BUSY) {  in eadm_subchannel_irq()
146 		private->state = EADM_NOT_OPER;  in eadm_subchannel_irq()
150 	scm_irq_handler(phys_to_virt(scsw->aob), error);  in eadm_subchannel_irq()
151 	private->state = EADM_IDLE;  in eadm_subchannel_irq()
153 	if (private->completion)  in eadm_subchannel_irq()
154 		complete(private->completion);  in eadm_subchannel_irq()
165 		sch = private->sch;  in eadm_get_idle_sch()
166 		spin_lock(sch->lock);  in eadm_get_idle_sch()
167 		if (private->state == EADM_IDLE) {  in eadm_get_idle_sch()
168 			private->state = EADM_BUSY;  in eadm_get_idle_sch()
169 			list_move_tail(&private->head, &eadm_list);  in eadm_get_idle_sch()
170 			spin_unlock(sch->lock);  in eadm_get_idle_sch()
175 		spin_unlock(sch->lock);  in eadm_get_idle_sch()
191 		return -EBUSY;  in eadm_start_aob()
193 	spin_lock_irqsave(sch->lock, flags);  in eadm_start_aob()
202 	private->state = EADM_NOT_OPER;  in eadm_start_aob()
206 	spin_unlock_irqrestore(sch->lock, flags);  in eadm_start_aob()
219 		return -ENOMEM;  in eadm_subchannel_probe()
221 	INIT_LIST_HEAD(&private->head);  in eadm_subchannel_probe()
222 	timer_setup(&private->timer, eadm_subchannel_timeout, 0);  in eadm_subchannel_probe()
224 	spin_lock_irq(sch->lock);  in eadm_subchannel_probe()
226 	private->state = EADM_IDLE;  in eadm_subchannel_probe()
227 	private->sch = sch;  in eadm_subchannel_probe()
228 	sch->isc = EADM_SCH_ISC;  in eadm_subchannel_probe()
232 		spin_unlock_irq(sch->lock);  in eadm_subchannel_probe()
236 	spin_unlock_irq(sch->lock);  in eadm_subchannel_probe()
239 	list_add(&private->head, &eadm_list);  in eadm_subchannel_probe()
251 	spin_lock_irq(sch->lock);  in eadm_quiesce()
252 	if (private->state != EADM_BUSY)  in eadm_quiesce()
258 	private->completion = &completion;  in eadm_quiesce()
259 	spin_unlock_irq(sch->lock);  in eadm_quiesce()
263 	spin_lock_irq(sch->lock);  in eadm_quiesce()
264 	private->completion = NULL;  in eadm_quiesce()
270 	} while (ret == -EBUSY);  in eadm_quiesce()
272 	spin_unlock_irq(sch->lock);  in eadm_quiesce()
280 	list_del(&private->head);  in eadm_subchannel_remove()
285 	spin_lock_irq(sch->lock);  in eadm_subchannel_remove()
287 	spin_unlock_irq(sch->lock);  in eadm_subchannel_remove()
298  * eadm_subchannel_sch_event - process subchannel event
300  * @process: non-zero if function is called in process context
303  * to the current operational state of the subchannel. Return zero when the
304  * event has been handled sufficiently or -EAGAIN when this function should
312 	spin_lock_irqsave(sch->lock, flags);  in eadm_subchannel_sch_event()
313 	if (!device_is_registered(&sch->dev))  in eadm_subchannel_sch_event()
316 	if (work_pending(&sch->todo_work))  in eadm_subchannel_sch_event()
324 	if (private->state == EADM_NOT_OPER)  in eadm_subchannel_sch_event()
325 		private->state = EADM_IDLE;  in eadm_subchannel_sch_event()
328 	spin_unlock_irqrestore(sch->lock, flags);  in eadm_subchannel_sch_event()
357 		return -ENXIO;  in eadm_sch_init()
361 		return -ENOMEM;  in eadm_sch_init()