1 // SPDX-License-Identifier: GPL-2.0
53 	orb->eadm.compat1 = 1;  in orb_init()
54 	orb->eadm.compat2 = 1;  in orb_init()
55 	orb->eadm.fmt = 1;  in orb_init()
56 	orb->eadm.x = 1;  in orb_init()
61 	union orb *orb = &get_eadm_private(sch)->orb;  in eadm_subchannel_start()
65 	orb->eadm.aob = (u32)__pa(aob);  in eadm_subchannel_start()
66 	orb->eadm.intparm = (u32)(addr_t)sch;  in eadm_subchannel_start()
67 	orb->eadm.key = PAGE_DEFAULT_KEY >> 4;  in eadm_subchannel_start()
70 	EADM_LOG_HEX(6, &sch->schid, sizeof(sch->schid));  in eadm_subchannel_start()
72 	cc = ssch(sch->schid, orb);  in eadm_subchannel_start()
75 		sch->schib.scsw.eadm.actl |= SCSW_ACTL_START_PEND;  in eadm_subchannel_start()
79 		return -EBUSY;  in eadm_subchannel_start()
80 	case 3:		/* not operational */  in eadm_subchannel_start()
81 		return -ENODEV;  in eadm_subchannel_start()
90 	cc = csch(sch->schid);  in eadm_subchannel_clear()
92 		return -ENODEV;  in eadm_subchannel_clear()
94 	sch->schib.scsw.eadm.actl |= SCSW_ACTL_CLEAR_PEND;  in eadm_subchannel_clear()
101 	struct subchannel *sch = private->sch;  in eadm_subchannel_timeout()
103 	spin_lock_irq(sch->lock);  in eadm_subchannel_timeout()
105 	EADM_LOG_HEX(1, &sch->schid, sizeof(sch->schid));  in eadm_subchannel_timeout()
108 	spin_unlock_irq(sch->lock);  in eadm_subchannel_timeout()
116 		del_timer(&private->timer);  in eadm_subchannel_set_timeout()
118 		mod_timer(&private->timer, jiffies + expires);  in eadm_subchannel_set_timeout()
124 	struct eadm_scsw *scsw = &sch->schib.scsw.eadm;  in eadm_subchannel_irq()
133 	if ((scsw->stctl & (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND))  in eadm_subchannel_irq()
134 	    && scsw->eswf == 1 && irb->esw.eadm.erw.r)  in eadm_subchannel_irq()
137 	if (scsw->fctl & SCSW_FCTL_CLEAR_FUNC)  in eadm_subchannel_irq()
142 	if (private->state != EADM_BUSY) {  in eadm_subchannel_irq()
145 		private->state = EADM_NOT_OPER;  in eadm_subchannel_irq()
149 	scm_irq_handler((struct aob *)(unsigned long)scsw->aob, error);  in eadm_subchannel_irq()
150 	private->state = EADM_IDLE;  in eadm_subchannel_irq()
152 	if (private->completion)  in eadm_subchannel_irq()
153 		complete(private->completion);  in eadm_subchannel_irq()
164 		sch = private->sch;  in eadm_get_idle_sch()
165 		spin_lock(sch->lock);  in eadm_get_idle_sch()
166 		if (private->state == EADM_IDLE) {  in eadm_get_idle_sch()
167 			private->state = EADM_BUSY;  in eadm_get_idle_sch()
168 			list_move_tail(&private->head, &eadm_list);  in eadm_get_idle_sch()
169 			spin_unlock(sch->lock);  in eadm_get_idle_sch()
174 		spin_unlock(sch->lock);  in eadm_get_idle_sch()
190 		return -EBUSY;  in eadm_start_aob()
192 	spin_lock_irqsave(sch->lock, flags);  in eadm_start_aob()
201 	private->state = EADM_NOT_OPER;  in eadm_start_aob()
205 	spin_unlock_irqrestore(sch->lock, flags);  in eadm_start_aob()
218 		return -ENOMEM;  in eadm_subchannel_probe()
220 	INIT_LIST_HEAD(&private->head);  in eadm_subchannel_probe()
221 	timer_setup(&private->timer, eadm_subchannel_timeout, 0);  in eadm_subchannel_probe()
223 	spin_lock_irq(sch->lock);  in eadm_subchannel_probe()
225 	private->state = EADM_IDLE;  in eadm_subchannel_probe()
226 	private->sch = sch;  in eadm_subchannel_probe()
227 	sch->isc = EADM_SCH_ISC;  in eadm_subchannel_probe()
231 		spin_unlock_irq(sch->lock);  in eadm_subchannel_probe()
235 	spin_unlock_irq(sch->lock);  in eadm_subchannel_probe()
238 	list_add(&private->head, &eadm_list);  in eadm_subchannel_probe()
250 	spin_lock_irq(sch->lock);  in eadm_quiesce()
251 	if (private->state != EADM_BUSY)  in eadm_quiesce()
257 	private->completion = &completion;  in eadm_quiesce()
258 	spin_unlock_irq(sch->lock);  in eadm_quiesce()
262 	spin_lock_irq(sch->lock);  in eadm_quiesce()
263 	private->completion = NULL;  in eadm_quiesce()
269 	} while (ret == -EBUSY);  in eadm_quiesce()
271 	spin_unlock_irq(sch->lock);  in eadm_quiesce()
279 	list_del(&private->head);  in eadm_subchannel_remove()
284 	spin_lock_irq(sch->lock);  in eadm_subchannel_remove()
286 	spin_unlock_irq(sch->lock);  in eadm_subchannel_remove()
297  * eadm_subchannel_sch_event - process subchannel event
299  * @process: non-zero if function is called in process context
302  * to the current operational state of the subchannel. Return zero when the
303  * event has been handled sufficiently or -EAGAIN when this function should
311 	spin_lock_irqsave(sch->lock, flags);  in eadm_subchannel_sch_event()
312 	if (!device_is_registered(&sch->dev))  in eadm_subchannel_sch_event()
315 	if (work_pending(&sch->todo_work))  in eadm_subchannel_sch_event()
323 	if (private->state == EADM_NOT_OPER)  in eadm_subchannel_sch_event()
324 		private->state = EADM_IDLE;  in eadm_subchannel_sch_event()
327 	spin_unlock_irqrestore(sch->lock, flags);  in eadm_subchannel_sch_event()
356 		return -ENXIO;  in eadm_sch_init()
360 		return -ENOMEM;  in eadm_sch_init()