39 int vfio_ccw_sch_quiesce(struct subchannel *sch)  in vfio_ccw_sch_quiesce()  argument
41 	struct vfio_ccw_private *private = dev_get_drvdata(&sch->dev);  in vfio_ccw_sch_quiesce()
45 	spin_lock_irq(sch->lock);  in vfio_ccw_sch_quiesce()
46 	if (!sch->schib.pmcw.ena)  in vfio_ccw_sch_quiesce()
48 	ret = cio_disable_subchannel(sch);  in vfio_ccw_sch_quiesce()
55 		ret = cio_cancel_halt_clear(sch, &iretry);  in vfio_ccw_sch_quiesce()
59 			       sch->schid.ssid, sch->schid.sch_no);  in vfio_ccw_sch_quiesce()
68 		spin_unlock_irq(sch->lock);  in vfio_ccw_sch_quiesce()
75 		spin_lock_irq(sch->lock);  in vfio_ccw_sch_quiesce()
76 		ret = cio_disable_subchannel(sch);  in vfio_ccw_sch_quiesce()
80 	spin_unlock_irq(sch->lock);  in vfio_ccw_sch_quiesce()
132 static void vfio_ccw_sch_irq(struct subchannel *sch)  in vfio_ccw_sch_irq()  argument
134 	struct vfio_ccw_private *private = dev_get_drvdata(&sch->dev);  in vfio_ccw_sch_irq()
152 static int vfio_ccw_sch_probe(struct subchannel *sch)  in vfio_ccw_sch_probe()  argument
154 	struct pmcw *pmcw = &sch->schib.pmcw;  in vfio_ccw_sch_probe()
159 		dev_warn(&sch->dev, "vfio: ccw: does not support QDIO: %s\n",  in vfio_ccw_sch_probe()
160 			 dev_name(&sch->dev));  in vfio_ccw_sch_probe()
195 	private->sch = sch;  in vfio_ccw_sch_probe()
196 	dev_set_drvdata(&sch->dev, private);  in vfio_ccw_sch_probe()
199 	spin_lock_irq(sch->lock);  in vfio_ccw_sch_probe()
201 	sch->isc = VFIO_CCW_ISC;  in vfio_ccw_sch_probe()
202 	ret = cio_enable_subchannel(sch, (u32)(unsigned long)sch);  in vfio_ccw_sch_probe()
203 	spin_unlock_irq(sch->lock);  in vfio_ccw_sch_probe()
213 	ret = vfio_ccw_mdev_reg(sch);  in vfio_ccw_sch_probe()
217 	if (dev_get_uevent_suppress(&sch->dev)) {  in vfio_ccw_sch_probe()
218 		dev_set_uevent_suppress(&sch->dev, 0);  in vfio_ccw_sch_probe()
219 		kobject_uevent(&sch->dev.kobj, KOBJ_ADD);  in vfio_ccw_sch_probe()
223 			   sch->schid.cssid, sch->schid.ssid,  in vfio_ccw_sch_probe()
224 			   sch->schid.sch_no);  in vfio_ccw_sch_probe()
228 	cio_disable_subchannel(sch);  in vfio_ccw_sch_probe()
230 	dev_set_drvdata(&sch->dev, NULL);  in vfio_ccw_sch_probe()
237 static int vfio_ccw_sch_remove(struct subchannel *sch)  in vfio_ccw_sch_remove()  argument
239 	struct vfio_ccw_private *private = dev_get_drvdata(&sch->dev);  in vfio_ccw_sch_remove()
242 	vfio_ccw_sch_quiesce(sch);  in vfio_ccw_sch_remove()
249 	vfio_ccw_mdev_unreg(sch);  in vfio_ccw_sch_remove()
251 	dev_set_drvdata(&sch->dev, NULL);  in vfio_ccw_sch_remove()
258 			   sch->schid.cssid, sch->schid.ssid,  in vfio_ccw_sch_remove()
259 			   sch->schid.sch_no);  in vfio_ccw_sch_remove()
263 static void vfio_ccw_sch_shutdown(struct subchannel *sch)  in vfio_ccw_sch_shutdown()  argument
265 	vfio_ccw_sch_quiesce(sch);  in vfio_ccw_sch_shutdown()
278 static int vfio_ccw_sch_event(struct subchannel *sch, int process)  in vfio_ccw_sch_event()  argument
280 	struct vfio_ccw_private *private = dev_get_drvdata(&sch->dev);  in vfio_ccw_sch_event()
284 	spin_lock_irqsave(sch->lock, flags);  in vfio_ccw_sch_event()
285 	if (!device_is_registered(&sch->dev))  in vfio_ccw_sch_event()
288 	if (work_pending(&sch->todo_work))  in vfio_ccw_sch_event()
291 	if (cio_update_schib(sch)) {  in vfio_ccw_sch_event()
297 	private = dev_get_drvdata(&sch->dev);  in vfio_ccw_sch_event()
305 	spin_unlock_irqrestore(sch->lock, flags);  in vfio_ccw_sch_event()
337 static int vfio_ccw_chp_event(struct subchannel *sch,  in vfio_ccw_chp_event()  argument
340 	struct vfio_ccw_private *private = dev_get_drvdata(&sch->dev);  in vfio_ccw_chp_event()
341 	int mask = chp_ssd_get_mask(&sch->ssd_info, link);  in vfio_ccw_chp_event()
347 	trace_vfio_ccw_chp_event(private->sch->schid, mask, event);  in vfio_ccw_chp_event()
349 			   mdev_uuid(private->mdev), sch->schid.cssid,  in vfio_ccw_chp_event()
350 			   sch->schid.ssid, sch->schid.sch_no,  in vfio_ccw_chp_event()
353 	if (cio_update_schib(sch))  in vfio_ccw_chp_event()
359 		sch->opm &= ~mask;  in vfio_ccw_chp_event()
360 		sch->lpm &= ~mask;  in vfio_ccw_chp_event()
361 		if (sch->schib.pmcw.lpum & mask)  in vfio_ccw_chp_event()
362 			cio_cancel_halt_clear(sch, &retry);  in vfio_ccw_chp_event()
366 		if (sch->schib.pmcw.lpum & mask)  in vfio_ccw_chp_event()
367 			cio_cancel_halt_clear(sch, &retry);  in vfio_ccw_chp_event()
373 		sch->opm |= mask;  in vfio_ccw_chp_event()
374 		sch->lpm |= mask;  in vfio_ccw_chp_event()
378 		sch->lpm |= mask & sch->opm;  in vfio_ccw_chp_event()