72     struct ccw_io_region *region = vcdev->io_region;  in vfio_ccw_handle_request()  local
81     QEMU_BUILD_BUG_ON(sizeof(region->orb_area) != sizeof(ORB));  in vfio_ccw_handle_request()
82     QEMU_BUILD_BUG_ON(sizeof(region->scsw_area) != sizeof(SCSW));  in vfio_ccw_handle_request()
83     QEMU_BUILD_BUG_ON(sizeof(region->irb_area) != sizeof(IRB));  in vfio_ccw_handle_request()
85     memset(region, 0, sizeof(*region));  in vfio_ccw_handle_request()
87     memcpy(region->orb_area, &sch->orb, sizeof(ORB));  in vfio_ccw_handle_request()
88     memcpy(region->scsw_area, &sch->curr_status.scsw, sizeof(SCSW));  in vfio_ccw_handle_request()
91     ret = pwrite(vcdev->vdev.fd, region,  in vfio_ccw_handle_request()
97         error_report("vfio-ccw: write I/O region failed with errno=%d", errno);  in vfio_ccw_handle_request()
122     struct ccw_schib_region *region = vcdev->schib_region;  in vfio_ccw_handle_store()  local
126     /* schib region not available so nothing else to do */  in vfio_ccw_handle_store()
127     if (!region) {  in vfio_ccw_handle_store()
131     memset(region, 0, sizeof(*region));  in vfio_ccw_handle_store()
132     ret = pread(vcdev->vdev.fd, region, vcdev->schib_region_size,  in vfio_ccw_handle_store()
141         error_report("vfio-ccw: store region read failed with errno=%d", errno);  in vfio_ccw_handle_store()
149     s = (SCHIB *)region->schib_area;  in vfio_ccw_handle_store()
165     struct ccw_cmd_region *region = vcdev->async_cmd_region;  in vfio_ccw_handle_clear()  local
169         /* Async command region not available, fall back to emulation */  in vfio_ccw_handle_clear()
173     memset(region, 0, sizeof(*region));  in vfio_ccw_handle_clear()
174     region->command = VFIO_CCW_ASYNC_CMD_CSCH;  in vfio_ccw_handle_clear()
177     ret = pwrite(vcdev->vdev.fd, region,  in vfio_ccw_handle_clear()
183         error_report("vfio-ccw: write cmd region failed with errno=%d", errno);  in vfio_ccw_handle_clear()
204     struct ccw_cmd_region *region = vcdev->async_cmd_region;  in vfio_ccw_handle_halt()  local
208         /* Async command region not available, fall back to emulation */  in vfio_ccw_handle_halt()
212     memset(region, 0, sizeof(*region));  in vfio_ccw_handle_halt()
213     region->command = VFIO_CCW_ASYNC_CMD_HSCH;  in vfio_ccw_handle_halt()
216     ret = pwrite(vcdev->vdev.fd, region,  in vfio_ccw_handle_halt()
222         error_report("vfio-ccw: write cmd region failed with errno=%d", errno);  in vfio_ccw_handle_halt()
250     struct ccw_crw_region *region = vcdev->crw_region;  in vfio_ccw_crw_read()  local
256         memset(region, 0, sizeof(*region));  in vfio_ccw_crw_read()
257         size = pread(vcdev->vdev.fd, region, vcdev->crw_region_size,  in vfio_ccw_crw_read()
261             error_report("vfio-ccw: Read crw region failed with errno=%d",  in vfio_ccw_crw_read()
266         if (region->crw == 0) {  in vfio_ccw_crw_read()
271         memcpy(&crw, &region->crw, sizeof(CRW));  in vfio_ccw_crw_read()
304     struct ccw_io_region *region = vcdev->io_region;  in vfio_ccw_io_notifier_handler()  local
317     size = pread(vcdev->vdev.fd, region, vcdev->io_region_size,  in vfio_ccw_io_notifier_handler()
354     memcpy(&irb, region->irb_area, sizeof(IRB));  in vfio_ccw_io_notifier_handler()
484      * We always expect at least the I/O region to be present. We also  in vfio_ccw_get_region()
501         error_setg(errp, "vfio: Unexpected size of the I/O region");  in vfio_ccw_get_region()
508     /* check for the optional async command region */  in vfio_ccw_get_region()
514             error_setg(errp, "vfio: Unexpected size of the async cmd region");  in vfio_ccw_get_region()
526             error_setg(errp, "vfio: Unexpected size of the schib region");  in vfio_ccw_get_region()
539             error_setg(errp, "vfio: Unexpected size of the CRW region");  in vfio_ccw_get_region()