hw/vfio/ccw.c

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