s390/cio/eadm_sch.c

61 static int eadm_subchannel_start(struct subchannel *sch, struct aob *aob)
63 	union orb *orb = &get_eadm_private(sch)->orb;
68 	orb->eadm.intparm = (u32)virt_to_phys(sch);
72 	EADM_LOG_HEX(6, &sch->schid, sizeof(sch->schid));
74 	cc = ssch(sch->schid, orb);
77 		sch->schib.scsw.eadm.actl |= SCSW_ACTL_START_PEND;
88 static int eadm_subchannel_clear(struct subchannel *sch)
92 	cc = csch(sch->schid);
96 	sch->schib.scsw.eadm.actl |= SCSW_ACTL_CLEAR_PEND;
103 	struct subchannel *sch = private->sch;
105 	spin_lock_irq(&sch->lock);
107 	EADM_LOG_HEX(1, &sch->schid, sizeof(sch->schid));
108 	if (eadm_subchannel_clear(sch))
110 	spin_unlock_irq(&sch->lock);
113 static void eadm_subchannel_set_timeout(struct subchannel *sch, int expires)
115 	struct eadm_private *private = get_eadm_private(sch);
123 static void eadm_subchannel_irq(struct subchannel *sch)
125 	struct eadm_private *private = get_eadm_private(sch);
126 	struct eadm_scsw *scsw = &sch->schib.scsw.eadm;
142 	eadm_subchannel_set_timeout(sch, 0);
148 		css_sched_sch_todo(sch, SCH_TODO_EVAL);
161 	struct subchannel *sch;
166 		sch = private->sch;
167 		spin_lock(&sch->lock);
171 			spin_unlock(&sch->lock);
174 			return sch;
176 		spin_unlock(&sch->lock);
186 	struct subchannel *sch;
190 	sch = eadm_get_idle_sch();
191 	if (!sch)
194 	spin_lock_irqsave(&sch->lock, flags);
195 	eadm_subchannel_set_timeout(sch, EADM_TIMEOUT);
196 	ret = eadm_subchannel_start(sch, aob);
201 	eadm_subchannel_set_timeout(sch, 0);
202 	private = get_eadm_private(sch);
204 	css_sched_sch_todo(sch, SCH_TODO_EVAL);
207 	spin_unlock_irqrestore(&sch->lock, flags);
213 static int eadm_subchannel_probe(struct subchannel *sch)
225 	spin_lock_irq(&sch->lock);
226 	set_eadm_private(sch, private);
228 	private->sch = sch;
229 	sch->isc = EADM_SCH_ISC;
230 	ret = cio_enable_subchannel(sch, (u32)virt_to_phys(sch));
232 		set_eadm_private(sch, NULL);
233 		spin_unlock_irq(&sch->lock);
237 	spin_unlock_irq(&sch->lock);
246 static void eadm_quiesce(struct subchannel *sch)
248 	struct eadm_private *private = get_eadm_private(sch);
252 	spin_lock_irq(&sch->lock);
256 	if (eadm_subchannel_clear(sch))
260 	spin_unlock_irq(&sch->lock);
264 	spin_lock_irq(&sch->lock);
268 	eadm_subchannel_set_timeout(sch, 0);
270 		ret = cio_disable_subchannel(sch);
273 	spin_unlock_irq(&sch->lock);
276 static void eadm_subchannel_remove(struct subchannel *sch)
278 	struct eadm_private *private = get_eadm_private(sch);
284 	eadm_quiesce(sch);
286 	spin_lock_irq(&sch->lock);
287 	set_eadm_private(sch, NULL);
288 	spin_unlock_irq(&sch->lock);
293 static void eadm_subchannel_shutdown(struct subchannel *sch)
295 	eadm_quiesce(sch);
300  * @sch: subchannel
308 static int eadm_subchannel_sch_event(struct subchannel *sch, int process)
313 	spin_lock_irqsave(&sch->lock, flags);
314 	if (!device_is_registered(&sch->dev))
317 	if (work_pending(&sch->todo_work))
320 	if (cio_update_schib(sch)) {
321 		css_sched_sch_todo(sch, SCH_TODO_UNREG);
324 	private = get_eadm_private(sch);
329 	spin_unlock_irqrestore(&sch->lock, flags);