22 	struct vfio_ccw_private *private;  in vfio_ccw_mdev_reset()  local
26 	private = dev_get_drvdata(mdev_parent_dev(mdev));  in vfio_ccw_mdev_reset()
27 	sch = private->sch;  in vfio_ccw_mdev_reset()
42 		private->state = VFIO_CCW_STATE_IDLE;  in vfio_ccw_mdev_reset()
51 	struct vfio_ccw_private *private =  in vfio_ccw_mdev_notifier()  local
61 		if (!cp_iova_pinned(&private->cp, unmap->iova))  in vfio_ccw_mdev_notifier()
64 		if (vfio_ccw_mdev_reset(private->mdev))  in vfio_ccw_mdev_notifier()
67 		cp_free(&private->cp);  in vfio_ccw_mdev_notifier()
90 	struct vfio_ccw_private *private = dev_get_drvdata(dev);  in available_instances_show()  local
92 	return sprintf(buf, "%d\n", atomic_read(&private->avail));  in available_instances_show()
115 	struct vfio_ccw_private *private =  in vfio_ccw_mdev_create()  local
118 	if (private->state == VFIO_CCW_STATE_NOT_OPER)  in vfio_ccw_mdev_create()
121 	if (atomic_dec_if_positive(&private->avail) < 0)  in vfio_ccw_mdev_create()
124 	private->mdev = mdev;  in vfio_ccw_mdev_create()
125 	private->state = VFIO_CCW_STATE_IDLE;  in vfio_ccw_mdev_create()
128 			   mdev_uuid(mdev), private->sch->schid.cssid,  in vfio_ccw_mdev_create()
129 			   private->sch->schid.ssid,  in vfio_ccw_mdev_create()
130 			   private->sch->schid.sch_no);  in vfio_ccw_mdev_create()
137 	struct vfio_ccw_private *private =  in vfio_ccw_mdev_remove()  local
141 			   mdev_uuid(mdev), private->sch->schid.cssid,  in vfio_ccw_mdev_remove()
142 			   private->sch->schid.ssid,  in vfio_ccw_mdev_remove()
143 			   private->sch->schid.sch_no);  in vfio_ccw_mdev_remove()
145 	if ((private->state != VFIO_CCW_STATE_NOT_OPER) &&  in vfio_ccw_mdev_remove()
146 	    (private->state != VFIO_CCW_STATE_STANDBY)) {  in vfio_ccw_mdev_remove()
147 		if (!vfio_ccw_sch_quiesce(private->sch))  in vfio_ccw_mdev_remove()
148 			private->state = VFIO_CCW_STATE_STANDBY;  in vfio_ccw_mdev_remove()
152 	cp_free(&private->cp);  in vfio_ccw_mdev_remove()
153 	private->mdev = NULL;  in vfio_ccw_mdev_remove()
154 	atomic_inc(&private->avail);  in vfio_ccw_mdev_remove()
161 	struct vfio_ccw_private *private =  in vfio_ccw_mdev_open()  local
166 	private->nb.notifier_call = vfio_ccw_mdev_notifier;  in vfio_ccw_mdev_open()
169 				     &events, &private->nb);  in vfio_ccw_mdev_open()
173 	ret = vfio_ccw_register_async_dev_regions(private);  in vfio_ccw_mdev_open()
177 	ret = vfio_ccw_register_schib_dev_regions(private);  in vfio_ccw_mdev_open()
181 	ret = vfio_ccw_register_crw_dev_regions(private);  in vfio_ccw_mdev_open()
188 	vfio_ccw_unregister_dev_regions(private);  in vfio_ccw_mdev_open()
190 				 &private->nb);  in vfio_ccw_mdev_open()
196 	struct vfio_ccw_private *private =  in vfio_ccw_mdev_release()  local
199 	if ((private->state != VFIO_CCW_STATE_NOT_OPER) &&  in vfio_ccw_mdev_release()
200 	    (private->state != VFIO_CCW_STATE_STANDBY)) {  in vfio_ccw_mdev_release()
202 			private->state = VFIO_CCW_STATE_STANDBY;  in vfio_ccw_mdev_release()
206 	cp_free(&private->cp);  in vfio_ccw_mdev_release()
207 	vfio_ccw_unregister_dev_regions(private);  in vfio_ccw_mdev_release()
209 				 &private->nb);  in vfio_ccw_mdev_release()
212 static ssize_t vfio_ccw_mdev_read_io_region(struct vfio_ccw_private *private,  in vfio_ccw_mdev_read_io_region()  argument
223 	mutex_lock(&private->io_mutex);  in vfio_ccw_mdev_read_io_region()
224 	region = private->io_region;  in vfio_ccw_mdev_read_io_region()
229 	mutex_unlock(&private->io_mutex);  in vfio_ccw_mdev_read_io_region()
239 	struct vfio_ccw_private *private;  in vfio_ccw_mdev_read()  local
241 	private = dev_get_drvdata(mdev_parent_dev(mdev));  in vfio_ccw_mdev_read()
243 	if (index >= VFIO_CCW_NUM_REGIONS + private->num_regions)  in vfio_ccw_mdev_read()
248 		return vfio_ccw_mdev_read_io_region(private, buf, count, ppos);  in vfio_ccw_mdev_read()
251 		return private->region[index].ops->read(private, buf, count,  in vfio_ccw_mdev_read()
258 static ssize_t vfio_ccw_mdev_write_io_region(struct vfio_ccw_private *private,  in vfio_ccw_mdev_write_io_region()  argument
269 	if (!mutex_trylock(&private->io_mutex))  in vfio_ccw_mdev_write_io_region()
272 	region = private->io_region;  in vfio_ccw_mdev_write_io_region()
278 	vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_IO_REQ);  in vfio_ccw_mdev_write_io_region()
280 		private->state = VFIO_CCW_STATE_IDLE;  in vfio_ccw_mdev_write_io_region()
284 	mutex_unlock(&private->io_mutex);  in vfio_ccw_mdev_write_io_region()
294 	struct vfio_ccw_private *private;  in vfio_ccw_mdev_write()  local
296 	private = dev_get_drvdata(mdev_parent_dev(mdev));  in vfio_ccw_mdev_write()
298 	if (index >= VFIO_CCW_NUM_REGIONS + private->num_regions)  in vfio_ccw_mdev_write()
303 		return vfio_ccw_mdev_write_io_region(private, buf, count, ppos);  in vfio_ccw_mdev_write()
306 		return private->region[index].ops->write(private, buf, count,  in vfio_ccw_mdev_write()
316 	struct vfio_ccw_private *private;  in vfio_ccw_mdev_get_device_info()  local
318 	private = dev_get_drvdata(mdev_parent_dev(mdev));  in vfio_ccw_mdev_get_device_info()
320 	info->num_regions = VFIO_CCW_NUM_REGIONS + private->num_regions;  in vfio_ccw_mdev_get_device_info()
330 	struct vfio_ccw_private *private;  in vfio_ccw_mdev_get_region_info()  local
333 	private = dev_get_drvdata(mdev_parent_dev(mdev));  in vfio_ccw_mdev_get_region_info()
350 		    VFIO_CCW_NUM_REGIONS + private->num_regions)  in vfio_ccw_mdev_get_region_info()
355 						 private->num_regions);  in vfio_ccw_mdev_get_region_info()
360 		info->size = private->region[i].size;  in vfio_ccw_mdev_get_region_info()
361 		info->flags = private->region[i].flags;  in vfio_ccw_mdev_get_region_info()
363 		cap_type.type = private->region[i].type;  in vfio_ccw_mdev_get_region_info()
364 		cap_type.subtype = private->region[i].subtype;  in vfio_ccw_mdev_get_region_info()
412 	struct vfio_ccw_private *private;  in vfio_ccw_mdev_set_irqs()  local
418 	private = dev_get_drvdata(mdev_parent_dev(mdev));  in vfio_ccw_mdev_set_irqs()
422 		ctx = &private->io_trigger;  in vfio_ccw_mdev_set_irqs()
425 		ctx = &private->crw_trigger;  in vfio_ccw_mdev_set_irqs()
481 int vfio_ccw_register_dev_region(struct vfio_ccw_private *private,  in vfio_ccw_register_dev_region()  argument
488 	region = krealloc(private->region,  in vfio_ccw_register_dev_region()
489 			  (private->num_regions + 1) * sizeof(*region),  in vfio_ccw_register_dev_region()
494 	private->region = region;  in vfio_ccw_register_dev_region()
495 	private->region[private->num_regions].type = VFIO_REGION_TYPE_CCW;  in vfio_ccw_register_dev_region()
496 	private->region[private->num_regions].subtype = subtype;  in vfio_ccw_register_dev_region()
497 	private->region[private->num_regions].ops = ops;  in vfio_ccw_register_dev_region()
498 	private->region[private->num_regions].size = size;  in vfio_ccw_register_dev_region()
499 	private->region[private->num_regions].flags = flags;  in vfio_ccw_register_dev_region()
500 	private->region[private->num_regions].data = data;  in vfio_ccw_register_dev_region()
502 	private->num_regions++;  in vfio_ccw_register_dev_region()
507 void vfio_ccw_unregister_dev_regions(struct vfio_ccw_private *private)  in vfio_ccw_unregister_dev_regions()  argument
511 	for (i = 0; i < private->num_regions; i++)  in vfio_ccw_unregister_dev_regions()
512 		private->region[i].ops->release(private, &private->region[i]);  in vfio_ccw_unregister_dev_regions()
513 	private->num_regions = 0;  in vfio_ccw_unregister_dev_regions()
514 	kfree(private->region);  in vfio_ccw_unregister_dev_regions()
515 	private->region = NULL;  in vfio_ccw_unregister_dev_regions()