21 static int vfio_ccw_mdev_reset(struct vfio_ccw_private *private)  in vfio_ccw_mdev_reset()  argument
27 	vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_CLOSE);  in vfio_ccw_mdev_reset()
28 	vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_OPEN);  in vfio_ccw_mdev_reset()
29 	if (private->state == VFIO_CCW_STATE_NOT_OPER)  in vfio_ccw_mdev_reset()
37 	struct vfio_ccw_private *private =  in vfio_ccw_dma_unmap()  local
41 	if (!cp_iova_pinned(&private->cp, iova, length))  in vfio_ccw_dma_unmap()
44 	vfio_ccw_mdev_reset(private);  in vfio_ccw_dma_unmap()
49 	struct vfio_ccw_private *private =  in vfio_ccw_mdev_init_dev()  local
52 	init_completion(&private->release_comp);  in vfio_ccw_mdev_init_dev()
58 	struct vfio_ccw_private *private = dev_get_drvdata(mdev->dev.parent);  in vfio_ccw_mdev_probe()  local
61 	if (private->state == VFIO_CCW_STATE_NOT_OPER)  in vfio_ccw_mdev_probe()
64 	ret = vfio_init_device(&private->vdev, &mdev->dev, &vfio_ccw_dev_ops);  in vfio_ccw_mdev_probe()
69 			   private->sch->schid.cssid,  in vfio_ccw_mdev_probe()
70 			   private->sch->schid.ssid,  in vfio_ccw_mdev_probe()
71 			   private->sch->schid.sch_no);  in vfio_ccw_mdev_probe()
73 	ret = vfio_register_emulated_iommu_dev(&private->vdev);  in vfio_ccw_mdev_probe()
76 	dev_set_drvdata(&mdev->dev, private);  in vfio_ccw_mdev_probe()
80 	vfio_put_device(&private->vdev);  in vfio_ccw_mdev_probe()
86 	struct vfio_ccw_private *private =  in vfio_ccw_mdev_release_dev()  local
98 	complete(&private->release_comp);  in vfio_ccw_mdev_release_dev()
103 	struct vfio_ccw_private *private = dev_get_drvdata(mdev->dev.parent);  in vfio_ccw_mdev_remove()  local
106 			   private->sch->schid.cssid,  in vfio_ccw_mdev_remove()
107 			   private->sch->schid.ssid,  in vfio_ccw_mdev_remove()
108 			   private->sch->schid.sch_no);  in vfio_ccw_mdev_remove()
110 	vfio_unregister_group_dev(&private->vdev);  in vfio_ccw_mdev_remove()
112 	vfio_put_device(&private->vdev);  in vfio_ccw_mdev_remove()
118 	 * private structure so each can be managed in its own life  in vfio_ccw_mdev_remove()
121 	wait_for_completion(&private->release_comp);  in vfio_ccw_mdev_remove()
126 	struct vfio_ccw_private *private =  in vfio_ccw_mdev_open_device()  local
131 	if (private->state == VFIO_CCW_STATE_NOT_OPER)  in vfio_ccw_mdev_open_device()
134 	ret = vfio_ccw_register_async_dev_regions(private);  in vfio_ccw_mdev_open_device()
138 	ret = vfio_ccw_register_schib_dev_regions(private);  in vfio_ccw_mdev_open_device()
142 	ret = vfio_ccw_register_crw_dev_regions(private);  in vfio_ccw_mdev_open_device()
146 	vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_OPEN);  in vfio_ccw_mdev_open_device()
147 	if (private->state == VFIO_CCW_STATE_NOT_OPER) {  in vfio_ccw_mdev_open_device()
155 	vfio_ccw_unregister_dev_regions(private);  in vfio_ccw_mdev_open_device()
161 	struct vfio_ccw_private *private =  in vfio_ccw_mdev_close_device()  local
164 	vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_CLOSE);  in vfio_ccw_mdev_close_device()
165 	vfio_ccw_unregister_dev_regions(private);  in vfio_ccw_mdev_close_device()
168 static ssize_t vfio_ccw_mdev_read_io_region(struct vfio_ccw_private *private,  in vfio_ccw_mdev_read_io_region()  argument
179 	mutex_lock(&private->io_mutex);  in vfio_ccw_mdev_read_io_region()
180 	region = private->io_region;  in vfio_ccw_mdev_read_io_region()
185 	mutex_unlock(&private->io_mutex);  in vfio_ccw_mdev_read_io_region()
194 	struct vfio_ccw_private *private =  in vfio_ccw_mdev_read()  local
198 	if (index >= VFIO_CCW_NUM_REGIONS + private->num_regions)  in vfio_ccw_mdev_read()
203 		return vfio_ccw_mdev_read_io_region(private, buf, count, ppos);  in vfio_ccw_mdev_read()
206 		return private->region[index].ops->read(private, buf, count,  in vfio_ccw_mdev_read()
213 static ssize_t vfio_ccw_mdev_write_io_region(struct vfio_ccw_private *private,  in vfio_ccw_mdev_write_io_region()  argument
224 	if (!mutex_trylock(&private->io_mutex))  in vfio_ccw_mdev_write_io_region()
227 	region = private->io_region;  in vfio_ccw_mdev_write_io_region()
233 	vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_IO_REQ);  in vfio_ccw_mdev_write_io_region()
237 	mutex_unlock(&private->io_mutex);  in vfio_ccw_mdev_write_io_region()
246 	struct vfio_ccw_private *private =  in vfio_ccw_mdev_write()  local
250 	if (index >= VFIO_CCW_NUM_REGIONS + private->num_regions)  in vfio_ccw_mdev_write()
255 		return vfio_ccw_mdev_write_io_region(private, buf, count, ppos);  in vfio_ccw_mdev_write()
258 		return private->region[index].ops->write(private, buf, count,  in vfio_ccw_mdev_write()
265 static int vfio_ccw_mdev_get_device_info(struct vfio_ccw_private *private,  in vfio_ccw_mdev_get_device_info()  argument
269 	info->num_regions = VFIO_CCW_NUM_REGIONS + private->num_regions;  in vfio_ccw_mdev_get_device_info()
275 static int vfio_ccw_mdev_get_region_info(struct vfio_ccw_private *private,  in vfio_ccw_mdev_get_region_info()  argument
297 		    VFIO_CCW_NUM_REGIONS + private->num_regions)  in vfio_ccw_mdev_get_region_info()
302 						 private->num_regions);  in vfio_ccw_mdev_get_region_info()
307 		info->size = private->region[i].size;  in vfio_ccw_mdev_get_region_info()
308 		info->flags = private->region[i].flags;  in vfio_ccw_mdev_get_region_info()
310 		cap_type.type = private->region[i].type;  in vfio_ccw_mdev_get_region_info()
311 		cap_type.subtype = private->region[i].subtype;  in vfio_ccw_mdev_get_region_info()
355 static int vfio_ccw_mdev_set_irqs(struct vfio_ccw_private *private,  in vfio_ccw_mdev_set_irqs()  argument
367 		ctx = &private->io_trigger;  in vfio_ccw_mdev_set_irqs()
370 		ctx = &private->crw_trigger;  in vfio_ccw_mdev_set_irqs()
373 		ctx = &private->req_trigger;  in vfio_ccw_mdev_set_irqs()
429 int vfio_ccw_register_dev_region(struct vfio_ccw_private *private,  in vfio_ccw_register_dev_region()  argument
436 	region = krealloc(private->region,  in vfio_ccw_register_dev_region()
437 			  (private->num_regions + 1) * sizeof(*region),  in vfio_ccw_register_dev_region()
442 	private->region = region;  in vfio_ccw_register_dev_region()
443 	private->region[private->num_regions].type = VFIO_REGION_TYPE_CCW;  in vfio_ccw_register_dev_region()
444 	private->region[private->num_regions].subtype = subtype;  in vfio_ccw_register_dev_region()
445 	private->region[private->num_regions].ops = ops;  in vfio_ccw_register_dev_region()
446 	private->region[private->num_regions].size = size;  in vfio_ccw_register_dev_region()
447 	private->region[private->num_regions].flags = flags;  in vfio_ccw_register_dev_region()
448 	private->region[private->num_regions].data = data;  in vfio_ccw_register_dev_region()
450 	private->num_regions++;  in vfio_ccw_register_dev_region()
455 void vfio_ccw_unregister_dev_regions(struct vfio_ccw_private *private)  in vfio_ccw_unregister_dev_regions()  argument
459 	for (i = 0; i < private->num_regions; i++)  in vfio_ccw_unregister_dev_regions()
460 		private->region[i].ops->release(private, &private->region[i]);  in vfio_ccw_unregister_dev_regions()
461 	private->num_regions = 0;  in vfio_ccw_unregister_dev_regions()
462 	kfree(private->region);  in vfio_ccw_unregister_dev_regions()
463 	private->region = NULL;  in vfio_ccw_unregister_dev_regions()
470 	struct vfio_ccw_private *private =  in vfio_ccw_mdev_ioctl()  local
488 		ret = vfio_ccw_mdev_get_device_info(private, &info);  in vfio_ccw_mdev_ioctl()
506 		ret = vfio_ccw_mdev_get_region_info(private, &info, arg);  in vfio_ccw_mdev_ioctl()
551 		return vfio_ccw_mdev_set_irqs(private, hdr.flags, hdr.index,  in vfio_ccw_mdev_ioctl()
555 		return vfio_ccw_mdev_reset(private);  in vfio_ccw_mdev_ioctl()
564 	struct vfio_ccw_private *private =  in vfio_ccw_mdev_request()  local
568 	if (private->req_trigger) {  in vfio_ccw_mdev_request()
574 		eventfd_signal(private->req_trigger, 1);  in vfio_ccw_mdev_request()