s390/cio/eadm_sch.c

60 static int eadm_subchannel_start(struct subchannel *sch, struct aob *aob)
62 	union orb *orb = &get_eadm_private(sch)->orb;
67 	orb->eadm.intparm = (u32)virt_to_phys(sch);
71 	EADM_LOG_HEX(6, &sch->schid, sizeof(sch->schid));
73 	cc = ssch(sch->schid, orb);
76 		sch->schib.scsw.eadm.actl |= SCSW_ACTL_START_PEND;
87 static int eadm_subchannel_clear(struct subchannel *sch)
91 	cc = csch(sch->schid);
95 	sch->schib.scsw.eadm.actl |= SCSW_ACTL_CLEAR_PEND;
102 	struct subchannel *sch = private->sch;
104 	spin_lock_irq(&sch->lock);
106 	EADM_LOG_HEX(1, &sch->schid, sizeof(sch->schid));
107 	if (eadm_subchannel_clear(sch))
109 	spin_unlock_irq(&sch->lock);
112 static void eadm_subchannel_set_timeout(struct subchannel *sch, int expires)
114 	struct eadm_private *private = get_eadm_private(sch);
122 static void eadm_subchannel_irq(struct subchannel *sch)
124 	struct eadm_private *private = get_eadm_private(sch);
125 	struct eadm_scsw *scsw = &sch->schib.scsw.eadm;
141 	eadm_subchannel_set_timeout(sch, 0);
147 		css_sched_sch_todo(sch, SCH_TODO_EVAL);
160 	struct subchannel *sch;
165 		sch = private->sch;
166 		spin_lock(&sch->lock);
170 			spin_unlock(&sch->lock);
173 			return sch;
175 		spin_unlock(&sch->lock);
185 	struct subchannel *sch;
189 	sch = eadm_get_idle_sch();
190 	if (!sch)
193 	spin_lock_irqsave(&sch->lock, flags);
194 	eadm_subchannel_set_timeout(sch, EADM_TIMEOUT);
195 	ret = eadm_subchannel_start(sch, aob);
200 	eadm_subchannel_set_timeout(sch, 0);
201 	private = get_eadm_private(sch);
203 	css_sched_sch_todo(sch, SCH_TODO_EVAL);
206 	spin_unlock_irqrestore(&sch->lock, flags);
212 static int eadm_subchannel_probe(struct subchannel *sch)
224 	spin_lock_irq(&sch->lock);
225 	set_eadm_private(sch, private);
227 	private->sch = sch;
228 	sch->isc = EADM_SCH_ISC;
229 	ret = cio_enable_subchannel(sch, (u32)virt_to_phys(sch));
231 		set_eadm_private(sch, NULL);
232 		spin_unlock_irq(&sch->lock);
236 	spin_unlock_irq(&sch->lock);
245 static void eadm_quiesce(struct subchannel *sch)
247 	struct eadm_private *private = get_eadm_private(sch);
251 	spin_lock_irq(&sch->lock);
255 	if (eadm_subchannel_clear(sch))
259 	spin_unlock_irq(&sch->lock);
263 	spin_lock_irq(&sch->lock);
267 	eadm_subchannel_set_timeout(sch, 0);
269 		ret = cio_disable_subchannel(sch);
272 	spin_unlock_irq(&sch->lock);
275 static void eadm_subchannel_remove(struct subchannel *sch)
277 	struct eadm_private *private = get_eadm_private(sch);
283 	eadm_quiesce(sch);
285 	spin_lock_irq(&sch->lock);
286 	set_eadm_private(sch, NULL);
287 	spin_unlock_irq(&sch->lock);
292 static void eadm_subchannel_shutdown(struct subchannel *sch)
294 	eadm_quiesce(sch);
299  * @sch: subchannel
307 static int eadm_subchannel_sch_event(struct subchannel *sch, int process)
312 	spin_lock_irqsave(&sch->lock, flags);
313 	if (!device_is_registered(&sch->dev))
316 	if (work_pending(&sch->todo_work))
319 	if (cio_update_schib(sch)) {
320 		css_sched_sch_todo(sch, SCH_TODO_UNREG);
323 	private = get_eadm_private(sch);
328 	spin_unlock_irqrestore(&sch->lock, flags);